git.sesse.net Git - ffmpeg/blob - configure

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --quiet                  Suppress showing informative output
  67   --list-decoders          show all available decoders
  68   --list-encoders          show all available encoders
  69   --list-hwaccels          show all available hardware accelerators
  70   --list-demuxers          show all available demuxers
  71   --list-muxers            show all available muxers
  72   --list-parsers           show all available parsers
  73   --list-protocols         show all available protocols
  74   --list-bsfs              show all available bitstream filters
  75   --list-indevs            show all available input devices
  76   --list-outdevs           show all available output devices
  77   --list-filters           show all available filters
  78
  79 Standard options:
  80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
  81   --disable-logging        do not log configure debug information
  82   --fatal-warnings         fail if any configure warning is generated
  83   --prefix=PREFIX          install in PREFIX [$prefix_default]
  84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  87   --libdir=DIR             install libs in DIR [PREFIX/lib]
  88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  89   --incdir=DIR             install includes in DIR [PREFIX/include]
  90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  92   --enable-rpath           use rpath to allow installing libraries in paths
  93                            not part of the dynamic linker search path
  94                            use rpath when linking programs (USE WITH CARE)
  95   --install-name-dir=DIR   Darwin directory name for installed targets
  96
  97 Licensing options:
  98   --enable-gpl             allow use of GPL code, the resulting libs
  99                            and binaries will be under GPL [no]
 100   --enable-version3        upgrade (L)GPL to version 3 [no]
 101   --enable-nonfree         allow use of nonfree code, the resulting libs
 102                            and binaries will be unredistributable [no]
 103
 104 Configuration options:
 105   --disable-static         do not build static libraries [no]
 106   --enable-shared          build shared libraries [no]
 107   --enable-small           optimize for size instead of speed
 108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
 109   --enable-gray            enable full grayscale support (slower color)
 110   --disable-swscale-alpha  disable alpha channel support in swscale
 111   --disable-all            disable building components, libraries and programs
 112   --disable-autodetect     disable automatically detected external libraries [no]
 113
 114 Program options:
 115   --disable-programs       do not build command line programs
 116   --disable-ffmpeg         disable ffmpeg build
 117   --disable-ffplay         disable ffplay build
 118   --disable-ffprobe        disable ffprobe build
 119   --disable-ffserver       disable ffserver build
 120
 121 Documentation options:
 122   --disable-doc            do not build documentation
 123   --disable-htmlpages      do not build HTML documentation pages
 124   --disable-manpages       do not build man documentation pages
 125   --disable-podpages       do not build POD documentation pages
 126   --disable-txtpages       do not build text documentation pages
 127
 128 Component options:
 129   --disable-avdevice       disable libavdevice build
 130   --disable-avcodec        disable libavcodec build
 131   --disable-avformat       disable libavformat build
 132   --disable-swresample     disable libswresample build
 133   --disable-swscale        disable libswscale build
 134   --disable-postproc       disable libpostproc build
 135   --disable-avfilter       disable libavfilter build
 136   --enable-avresample      enable libavresample build [no]
 137   --disable-pthreads       disable pthreads [autodetect]
 138   --disable-w32threads     disable Win32 threads [autodetect]
 139   --disable-os2threads     disable OS/2 threads [autodetect]
 140   --disable-network        disable network support [no]
 141   --disable-dct            disable DCT code
 142   --disable-dwt            disable DWT code
 143   --disable-error-resilience disable error resilience code
 144   --disable-lsp            disable LSP code
 145   --disable-lzo            disable LZO decoder code
 146   --disable-mdct           disable MDCT code
 147   --disable-rdft           disable RDFT code
 148   --disable-fft            disable FFT code
 149   --disable-faan           disable floating point AAN (I)DCT code
 150   --disable-pixelutils     disable pixel utils in libavutil
 151
 152 Individual component options:
 153   --disable-everything     disable all components listed below
 154   --disable-encoder=NAME   disable encoder NAME
 155   --enable-encoder=NAME    enable encoder NAME
 156   --disable-encoders       disable all encoders
 157   --disable-decoder=NAME   disable decoder NAME
 158   --enable-decoder=NAME    enable decoder NAME
 159   --disable-decoders       disable all decoders
 160   --disable-hwaccel=NAME   disable hwaccel NAME
 161   --enable-hwaccel=NAME    enable hwaccel NAME
 162   --disable-hwaccels       disable all hwaccels
 163   --disable-muxer=NAME     disable muxer NAME
 164   --enable-muxer=NAME      enable muxer NAME
 165   --disable-muxers         disable all muxers
 166   --disable-demuxer=NAME   disable demuxer NAME
 167   --enable-demuxer=NAME    enable demuxer NAME
 168   --disable-demuxers       disable all demuxers
 169   --enable-parser=NAME     enable parser NAME
 170   --disable-parser=NAME    disable parser NAME
 171   --disable-parsers        disable all parsers
 172   --enable-bsf=NAME        enable bitstream filter NAME
 173   --disable-bsf=NAME       disable bitstream filter NAME
 174   --disable-bsfs           disable all bitstream filters
 175   --enable-protocol=NAME   enable protocol NAME
 176   --disable-protocol=NAME  disable protocol NAME
 177   --disable-protocols      disable all protocols
 178   --enable-indev=NAME      enable input device NAME
 179   --disable-indev=NAME     disable input device NAME
 180   --disable-indevs         disable input devices
 181   --enable-outdev=NAME     enable output device NAME
 182   --disable-outdev=NAME    disable output device NAME
 183   --disable-outdevs        disable output devices
 184   --disable-devices        disable all devices
 185   --enable-filter=NAME     enable filter NAME
 186   --disable-filter=NAME    disable filter NAME
 187   --disable-filters        disable all filters
 188
 189 External library support:
 190
 191   Using any of the following switches will allow FFmpeg to link to the
 192   corresponding external library. All the components depending on that library
 193   will become enabled, if all their other dependencies are met and they are not
 194   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 195   libwavpack and allow the libwavpack encoder to be built, unless it is
 196   specifically disabled with --disable-encoder=libwavpack.
 197
 198   Note that only the system libraries are auto-detected. All the other external
 199   libraries must be explicitly enabled.
 200
 201   Also note that the following help text describes the purpose of the libraries
 202   themselves, not all their features will necessarily be usable by FFmpeg.
 203
 204   --disable-alsa           disable ALSA support [autodetect]
 205   --disable-appkit         disable Apple AppKit framework [autodetect]
 206   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
 207   --enable-avisynth        enable reading of AviSynth script files [no]
 208   --disable-bzlib          disable bzlib [autodetect]
 209   --disable-coreimage      disable Apple CoreImage framework [autodetect]
 210   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 211   --enable-frei0r          enable frei0r video filtering [no]
 212   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 213                            if openssl, librtmp or gmp is not used [no]
 214   --enable-gmp             enable gmp, needed for rtmp(t)e support
 215                            if openssl or librtmp is not used [no]
 216   --enable-gnutls          enable gnutls, needed for https support
 217                            if openssl or libtls is not used [no]
 218   --disable-iconv          disable iconv [autodetect]
 219   --enable-jni             enable JNI support [no]
 220   --enable-ladspa          enable LADSPA audio filtering [no]
 221   --enable-libass          enable libass subtitles rendering,
 222                            needed for subtitles and ass filter [no]
 223   --enable-libbluray       enable BluRay reading using libbluray [no]
 224   --enable-libbs2b         enable bs2b DSP library [no]
 225   --enable-libcaca         enable textual display using libcaca [no]
 226   --enable-libcelt         enable CELT decoding via libcelt [no]
 227   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 228   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 229                            and libraw1394 [no]
 230   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 231   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 232   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 233   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 234   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 235   --enable-libgme          enable Game Music Emu via libgme [no]
 236   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 237   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 238   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 239   --enable-libjack         enable JACK audio sound server [no]
 240   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 241   --enable-libmodplug      enable ModPlug via libmodplug [no]
 242   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 243   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 244   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 245   --enable-libopencv       enable video filtering via libopencv [no]
 246   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 247   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 248   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 249   --enable-libopus         enable Opus de/encoding via libopus [no]
 250   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 251   --enable-librsvg         enable SVG rasterization via librsvg [no]
 252   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 253   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 254   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 255   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 256   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 257   --enable-libsoxr         enable Include libsoxr resampling [no]
 258   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 259   --enable-libssh          enable SFTP protocol via libssh [no]
 260   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 261   --enable-libtheora       enable Theora encoding via libtheora [no]
 262   --enable-libtls          enable LibreSSL (via libtls), needed for https support
 263                            if openssl or gnutls is not used [no]
 264   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 265   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 266   --enable-libvidstab      enable video stabilization using vid.stab [no]
 267   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 268   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 269   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 270                            native implementation exists [no]
 271   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 272   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 273   --enable-libwebp         enable WebP encoding via libwebp [no]
 274   --enable-libx264         enable H.264 encoding via x264 [no]
 275   --enable-libx265         enable HEVC encoding via x265 [no]
 276   --enable-libxavs         enable AVS encoding via xavs [no]
 277   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 278   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 279   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 280   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 281   --enable-libxvid         enable Xvid encoding via xvidcore,
 282                            native MPEG-4/Xvid encoder exists [no]
 283   --enable-libxml2         enable XML parsing using the C library libxml2 [no]
 284   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 285   --enable-libzmq          enable message passing via libzmq [no]
 286   --enable-libzvbi         enable teletext support via libzvbi [no]
 287   --enable-lv2             enable LV2 audio filtering [no]
 288   --disable-lzma           disable lzma [autodetect]
 289   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 290   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
 291   --enable-mediacodec      enable Android MediaCodec support [no]
 292   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 293   --enable-openal          enable OpenAL 1.1 capture support [no]
 294   --enable-opencl          enable OpenCL processing [no]
 295   --enable-opengl          enable OpenGL rendering [no]
 296   --enable-openssl         enable openssl, needed for https support
 297                            if gnutls or libtls is not used [no]
 298   --disable-sndio          disable sndio support [autodetect]
 299   --disable-schannel       disable SChannel SSP, needed for TLS support on
 300                            Windows if openssl and gnutls are not used [autodetect]
 301   --disable-sdl2           disable sdl2 [autodetect]
 302   --disable-securetransport disable Secure Transport, needed for TLS support
 303                            on OSX if openssl and gnutls are not used [autodetect]
 304   --disable-xlib           disable xlib [autodetect]
 305   --disable-zlib           disable zlib [autodetect]
 306
 307   The following libraries provide various hardware acceleration features:
 308   --disable-amf            disable AMF video encoding code [autodetect]
 309   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 310   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
 311   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
 312   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 313   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 314   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 315   --enable-libdrm          enable DRM code (Linux) [no]
 316   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 317   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 318   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 319   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 320   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 321   --enable-omx             enable OpenMAX IL code [no]
 322   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 323   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 324   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
 325   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 326   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 327   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 328
 329 Toolchain options:
 330   --arch=ARCH              select architecture [$arch]
 331   --cpu=CPU                select the minimum required CPU (affects
 332                            instruction selection, may crash on older CPUs)
 333   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 334   --progs-suffix=SUFFIX    program name suffix []
 335   --enable-cross-compile   assume a cross-compiler is used
 336   --sysroot=PATH           root of cross-build tree
 337   --sysinclude=PATH        location of cross-build system headers
 338   --target-os=OS           compiler targets OS [$target_os]
 339   --target-exec=CMD        command to run executables on target
 340   --target-path=DIR        path to view of build directory on target
 341   --target-samples=DIR     path to samples directory on target
 342   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 343   --toolchain=NAME         set tool defaults according to NAME
 344   --nm=NM                  use nm tool NM [$nm_default]
 345   --ar=AR                  use archive tool AR [$ar_default]
 346   --as=AS                  use assembler AS [$as_default]
 347   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 348   --strip=STRIP            use strip tool STRIP [$strip_default]
 349   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 350   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 351   --cc=CC                  use C compiler CC [$cc_default]
 352   --cxx=CXX                use C compiler CXX [$cxx_default]
 353   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 354   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 355   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 356   --ld=LD                  use linker LD [$ld_default]
 357   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 358   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 359   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 360   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 361   --host-cc=HOSTCC         use host C compiler HOSTCC
 362   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 363   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 364   --host-ld=HOSTLD         use host linker HOSTLD
 365   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 366   --host-libs=HLIBS        use libs HLIBS when linking for host
 367   --host-os=OS             compiler host OS [$target_os]
 368   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 369   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 370   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 371   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 372   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 373   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 374   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 375   --extra-version=STRING   version string suffix []
 376   --optflags=OPTFLAGS      override optimization-related compiler flags
 377   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 378   --build-suffix=SUFFIX    library name suffix []
 379   --enable-pic             build position-independent code
 380   --enable-thumb           compile for Thumb instruction set
 381   --enable-lto             use link-time optimization
 382   --env="ENV=override"     override the environment variables
 383
 384 Advanced options (experts only):
 385   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 386   --custom-allocator=NAME  use a supported custom allocator
 387   --disable-symver         disable symbol versioning
 388   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 389   --disable-safe-bitstream-reader
 390                            disable buffer boundary checking in bitreaders
 391                            (faster, but may crash)
 392   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 393
 394 Optimization options (experts only):
 395   --disable-asm            disable all assembly optimizations
 396   --disable-altivec        disable AltiVec optimizations
 397   --disable-vsx            disable VSX optimizations
 398   --disable-power8         disable POWER8 optimizations
 399   --disable-amd3dnow       disable 3DNow! optimizations
 400   --disable-amd3dnowext    disable 3DNow! extended optimizations
 401   --disable-mmx            disable MMX optimizations
 402   --disable-mmxext         disable MMXEXT optimizations
 403   --disable-sse            disable SSE optimizations
 404   --disable-sse2           disable SSE2 optimizations
 405   --disable-sse3           disable SSE3 optimizations
 406   --disable-ssse3          disable SSSE3 optimizations
 407   --disable-sse4           disable SSE4 optimizations
 408   --disable-sse42          disable SSE4.2 optimizations
 409   --disable-avx            disable AVX optimizations
 410   --disable-xop            disable XOP optimizations
 411   --disable-fma3           disable FMA3 optimizations
 412   --disable-fma4           disable FMA4 optimizations
 413   --disable-avx2           disable AVX2 optimizations
 414   --disable-avx512         disable AVX-512 optimizations
 415   --disable-aesni          disable AESNI optimizations
 416   --disable-armv5te        disable armv5te optimizations
 417   --disable-armv6          disable armv6 optimizations
 418   --disable-armv6t2        disable armv6t2 optimizations
 419   --disable-vfp            disable VFP optimizations
 420   --disable-neon           disable NEON optimizations
 421   --disable-inline-asm     disable use of inline assembly
 422   --disable-x86asm         disable use of standalone x86 assembly
 423   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 424   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 425   --disable-msa            disable MSA optimizations
 426   --disable-mipsfpu        disable floating point MIPS optimizations
 427   --disable-mmi            disable Loongson SIMD optimizations
 428   --disable-fast-unaligned consider unaligned accesses slow
 429
 430 Developer options (useful when working on FFmpeg itself):
 431   --disable-debug          disable debugging symbols
 432   --enable-debug=LEVEL     set the debug level [$debuglevel]
 433   --disable-optimizations  disable compiler optimizations
 434   --enable-extra-warnings  enable more compiler warnings
 435   --disable-stripping      disable stripping of executables and shared libraries
 436   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 437                            2 causes a slowdown at runtime.
 438   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 439   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 440                            leaks and errors, using the specified valgrind binary.
 441                            Cannot be combined with --target-exec
 442   --enable-ftrapv          Trap arithmetic overflows
 443   --samples=PATH           location of test samples for FATE, if not set use
 444                            \$FATE_SAMPLES at make invocation time.
 445   --enable-neon-clobber-test check NEON registers for clobbering (should be
 446                            used only for debugging purposes)
 447   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 448                            should be used only for debugging purposes)
 449   --enable-random          randomly enable/disable components
 450   --disable-random
 451   --enable-random=LIST     randomly enable/disable specific components or
 452   --disable-random=LIST    component groups. LIST is a comma-separated list
 453                            of NAME[:PROB] entries where NAME is a component
 454                            (group) and PROB the probability associated with
 455                            NAME (default 0.5).
 456   --random-seed=VALUE      seed value for --enable/disable-random
 457   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 458                            (only applies to --disable-optimizations builds)
 459   --enable-osfuzz          Enable building fuzzer tool
 460   --libfuzzer=PATH         path to libfuzzer
 461   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 462                            in the name) of tests whose result is ignored
 463   --enable-linux-perf      enable Linux Performance Monitor API
 464
 465 NOTE: Object files are built at the place where configure is launched.
 466 EOF
 467   exit 0
 468 }
 469
 470 if test -t 1 && which tput >/dev/null 2>&1; then
 471     ncolors=$(tput colors)
 472     if test -n "$ncolors" && test $ncolors -ge 8; then
 473         bold_color=$(tput bold)
 474         warn_color=$(tput setaf 3)
 475         error_color=$(tput setaf 1)
 476         reset_color=$(tput sgr0)
 477     fi
 478     # 72 used instead of 80 since that's the default of pr
 479     ncols=$(tput cols)
 480 fi
 481 : ${ncols:=72}
 482
 483 log(){
 484     echo "$@" >> $logfile
 485 }
 486
 487 log_file(){
 488     log BEGIN $1
 489     pr -n -t $1 >> $logfile
 490     log END $1
 491 }
 492
 493 warn(){
 494     log "WARNING: $*"
 495     WARNINGS="${WARNINGS}WARNING: $*\n"
 496 }
 497
 498 die(){
 499     log "$@"
 500     echo "$error_color$bold_color$@$reset_color"
 501     cat <<EOF
 502
 503 If you think configure made a mistake, make sure you are using the latest
 504 version from Git.  If the latest version fails, report the problem to the
 505 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 506 EOF
 507     if disabled logging; then
 508         cat <<EOF
 509 Rerun configure with logging enabled (do not use --disable-logging), and
 510 include the log this produces with your report.
 511 EOF
 512     else
 513         cat <<EOF
 514 Include the log file "$logfile" produced by configure as this will help
 515 solve the problem.
 516 EOF
 517     fi
 518     exit 1
 519 }
 520
 521 # Avoid locale weirdness, besides we really just want to translate ASCII.
 522 toupper(){
 523     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 524 }
 525
 526 tolower(){
 527     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 528 }
 529
 530 c_escape(){
 531     echo "$*" | sed 's/["\\]/\\\0/g'
 532 }
 533
 534 sh_quote(){
 535     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 536     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 537     echo "$v"
 538 }
 539
 540 cleanws(){
 541     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 542 }
 543
 544 filter(){
 545     pat=$1
 546     shift
 547     for v; do
 548         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 549     done
 550 }
 551
 552 filter_out(){
 553     pat=$1
 554     shift
 555     for v; do
 556         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 557     done
 558 }
 559
 560 map(){
 561     m=$1
 562     shift
 563     for v; do eval $m; done
 564 }
 565
 566 add_suffix(){
 567     suffix=$1
 568     shift
 569     for v; do echo ${v}${suffix}; done
 570 }
 571
 572 set_all(){
 573     value=$1
 574     shift
 575     for var in $*; do
 576         eval $var=$value
 577     done
 578 }
 579
 580 set_weak(){
 581     value=$1
 582     shift
 583     for var; do
 584         eval : \${$var:=$value}
 585     done
 586 }
 587
 588 sanitize_var_name(){
 589     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 590 }
 591
 592 set_sanitized(){
 593     var=$1
 594     shift
 595     eval $(sanitize_var_name "$var")='$*'
 596 }
 597
 598 get_sanitized(){
 599     eval echo \$$(sanitize_var_name "$1")
 600 }
 601
 602 pushvar(){
 603     for pvar in $*; do
 604         eval level=\${${pvar}_level:=0}
 605         eval ${pvar}_${level}="\$$pvar"
 606         eval ${pvar}_level=$(($level+1))
 607     done
 608 }
 609
 610 popvar(){
 611     for pvar in $*; do
 612         eval level=\${${pvar}_level:-0}
 613         test $level = 0 && continue
 614         eval level=$(($level-1))
 615         eval $pvar="\${${pvar}_${level}}"
 616         eval ${pvar}_level=$level
 617         eval unset ${pvar}_${level}
 618     done
 619 }
 620
 621 request(){
 622     for var in $*; do
 623         eval ${var}_requested=yes
 624         eval $var=
 625     done
 626 }
 627
 628 enable(){
 629     set_all yes $*
 630 }
 631
 632 disable(){
 633     set_all no $*
 634 }
 635
 636 enable_weak(){
 637     set_weak yes $*
 638 }
 639
 640 disable_weak(){
 641     set_weak no $*
 642 }
 643
 644 enable_sanitized(){
 645     for var; do
 646         enable $(sanitize_var_name $var)
 647     done
 648 }
 649
 650 disable_sanitized(){
 651     for var; do
 652         disable $(sanitize_var_name $var)
 653     done
 654 }
 655
 656 do_enable_deep(){
 657     for var; do
 658         enabled $var && continue
 659         eval sel="\$${var}_select"
 660         eval sgs="\$${var}_suggest"
 661         pushvar var sgs
 662         enable_deep $sel
 663         popvar sgs
 664         enable_deep_weak $sgs
 665         popvar var
 666     done
 667 }
 668
 669 enable_deep(){
 670     do_enable_deep $*
 671     enable $*
 672 }
 673
 674 enable_deep_weak(){
 675     for var; do
 676         disabled $var && continue
 677         pushvar var
 678         do_enable_deep $var
 679         popvar var
 680         enable_weak $var
 681     done
 682 }
 683
 684 requested(){
 685     test "${1#!}" = "$1" && op="=" || op="!="
 686     eval test "x\$${1#!}_requested" $op "xyes"
 687 }
 688
 689 enabled(){
 690     test "${1#!}" = "$1" && op="=" || op="!="
 691     eval test "x\$${1#!}" $op "xyes"
 692 }
 693
 694 disabled(){
 695     test "${1#!}" = "$1" && op="=" || op="!="
 696     eval test "x\$${1#!}" $op "xno"
 697 }
 698
 699 enabled_all(){
 700     for opt; do
 701         enabled $opt || return 1
 702     done
 703 }
 704
 705 disabled_all(){
 706     for opt; do
 707         disabled $opt || return 1
 708     done
 709 }
 710
 711 enabled_any(){
 712     for opt; do
 713         enabled $opt && return 0
 714     done
 715 }
 716
 717 disabled_any(){
 718     for opt; do
 719         disabled $opt && return 0
 720     done
 721     return 1
 722 }
 723
 724 set_default(){
 725     for opt; do
 726         eval : \${$opt:=\$${opt}_default}
 727     done
 728 }
 729
 730 is_in(){
 731     value=$1
 732     shift
 733     for var in $*; do
 734         [ $var = $value ] && return 0
 735     done
 736     return 1
 737 }
 738
 739 check_deps(){
 740     for cfg; do
 741         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 742         disabled ${cfg}_checking && continue
 743         enable ${cfg}_checking
 744
 745         eval dep_all="\$${cfg}_deps"
 746         eval dep_any="\$${cfg}_deps_any"
 747         eval dep_con="\$${cfg}_conflict"
 748         eval dep_sel="\$${cfg}_select"
 749         eval dep_sgs="\$${cfg}_suggest"
 750         eval dep_ifa="\$${cfg}_if"
 751         eval dep_ifn="\$${cfg}_if_any"
 752
 753         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 754         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 755         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 756
 757         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 758         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 759         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 760         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 761         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
 762         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 763
 764         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 765
 766         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 767             # filter out library deps, these do not belong in extralibs
 768             is_in $dep $LIBRARY_LIST && continue
 769             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 770         done
 771
 772         disable ${cfg}_checking
 773     done
 774 }
 775
 776 print_config(){
 777     pfx=$1
 778     files=$2
 779     shift 2
 780     map 'eval echo "$v \${$v:-no}"' "$@" |
 781     awk "BEGIN { split(\"$files\", files) }
 782         {
 783             c = \"$pfx\" toupper(\$1);
 784             v = \$2;
 785             sub(/yes/, 1, v);
 786             sub(/no/,  0, v);
 787             for (f in files) {
 788                 file = files[f];
 789                 if (file ~ /\\.h\$/) {
 790                     printf(\"#define %s %d\\n\", c, v) >>file;
 791                 } else if (file ~ /\\.asm\$/) {
 792                     printf(\"%%define %s %d\\n\", c, v) >>file;
 793                 } else if (file ~ /\\.mak\$/) {
 794                     n = -v ? \"\" : \"!\";
 795                     printf(\"%s%s=yes\\n\", n, c) >>file;
 796                 } else if (file ~ /\\.texi\$/) {
 797                     pre = -v ? \"\" : \"@c \";
 798                     yesno = \$2;
 799                     c2 = tolower(c);
 800                     gsub(/_/, \"-\", c2);
 801                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 802                 }
 803             }
 804         }"
 805 }
 806
 807 print_enabled(){
 808     suf=$1
 809     shift
 810     for v; do
 811         enabled $v && printf "%s\n" ${v%$suf}
 812     done
 813 }
 814
 815 append(){
 816     var=$1
 817     shift
 818     eval "$var=\"\$$var $*\""
 819 }
 820
 821 prepend(){
 822     var=$1
 823     shift
 824     eval "$var=\"$* \$$var\""
 825 }
 826
 827 unique(){
 828     var=$1
 829     uniq_list=""
 830     for tok in $(eval echo \$$var); do
 831         uniq_list="$(filter_out $tok $uniq_list) $tok"
 832     done
 833     eval "$var=\"${uniq_list}\""
 834 }
 835
 836 resolve(){
 837     var=$1
 838     tmpvar=
 839     for entry in $(eval echo \$$var); do
 840         tmpvar="$tmpvar $(eval echo \$${entry})"
 841     done
 842     eval "$var=\"${tmpvar}\""
 843 }
 844
 845 add_cppflags(){
 846     append CPPFLAGS "$@"
 847 }
 848
 849 add_cflags(){
 850     append CFLAGS $($cflags_filter "$@")
 851 }
 852
 853 add_cflags_headers(){
 854     append CFLAGS_HEADERS $($cflags_filter "$@")
 855 }
 856
 857 add_cxxflags(){
 858     append CXXFLAGS $($cflags_filter "$@")
 859 }
 860
 861 add_asflags(){
 862     append ASFLAGS $($asflags_filter "$@")
 863 }
 864
 865 add_objcflags(){
 866     append OBJCFLAGS $($objcflags_filter "$@")
 867 }
 868
 869 add_ldflags(){
 870     append LDFLAGS $($ldflags_filter "$@")
 871 }
 872
 873 add_ldexeflags(){
 874     append LDEXEFLAGS $($ldflags_filter "$@")
 875 }
 876
 877 add_ldsoflags(){
 878     append LDSOFLAGS $($ldflags_filter "$@")
 879 }
 880
 881 add_stripflags(){
 882     append ASMSTRIPFLAGS "$@"
 883 }
 884
 885 add_extralibs(){
 886     prepend extralibs $($ldflags_filter "$@")
 887 }
 888
 889 add_host_cppflags(){
 890     append host_cppflags "$@"
 891 }
 892
 893 add_host_cflags(){
 894     append host_cflags $($host_cflags_filter "$@")
 895 }
 896
 897 add_host_ldflags(){
 898     append host_ldflags $($host_ldflags_filter "$@")
 899 }
 900
 901 add_compat(){
 902     append compat_objs $1
 903     shift
 904     map 'add_cppflags -D$v' "$@"
 905 }
 906
 907 check_cmd(){
 908     log "$@"
 909     "$@" >> $logfile 2>&1
 910 }
 911
 912 check_stat(){
 913     log check_stat "$@"
 914     stat "$1" >> $logfile 2>&1
 915 }
 916
 917 cc_o(){
 918     eval printf '%s\\n' $CC_O
 919 }
 920
 921 cc_e(){
 922     eval printf '%s\\n' $CC_E
 923 }
 924
 925 check_cc(){
 926     log check_cc "$@"
 927     cat > $TMPC
 928     log_file $TMPC
 929     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 930 }
 931
 932 check_cxx(){
 933     log check_cxx "$@"
 934     cat > $TMPCPP
 935     log_file $TMPCPP
 936     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 937 }
 938
 939 check_objcc(){
 940     log check_objcc "$@"
 941     cat > $TMPM
 942     log_file $TMPM
 943     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 944 }
 945
 946 check_cpp(){
 947     log check_cpp "$@"
 948     cat > $TMPC
 949     log_file $TMPC
 950     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 951 }
 952
 953 as_o(){
 954     eval printf '%s\\n' $AS_O
 955 }
 956
 957 check_as(){
 958     log check_as "$@"
 959     cat > $TMPS
 960     log_file $TMPS
 961     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 962 }
 963
 964 check_inline_asm(){
 965     log check_inline_asm "$@"
 966     name="$1"
 967     code="$2"
 968     shift 2
 969     disable $name
 970     check_cc "$@" <<EOF && enable $name
 971 void foo(void){ __asm__ volatile($code); }
 972 EOF
 973 }
 974
 975 check_inline_asm_flags(){
 976     log check_inline_asm_flags "$@"
 977     name="$1"
 978     code="$2"
 979     flags=''
 980     shift 2
 981     while [ "$1" != "" ]; do
 982       append flags $1
 983       shift
 984     done;
 985     disable $name
 986     cat > $TMPC <<EOF
 987 void foo(void){ __asm__ volatile($code); }
 988 EOF
 989     log_file $TMPC
 990     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 991     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 992 }
 993
 994 check_insn(){
 995     log check_insn "$@"
 996     check_inline_asm ${1}_inline "\"$2\""
 997     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 998 }
 999
1000 check_x86asm(){
1001     log check_x86asm "$@"
1002     echo "$1" > $TMPS
1003     log_file $TMPS
1004     shift 1
1005     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1006 }
1007
1008 ld_o(){
1009     eval printf '%s\\n' $LD_O
1010 }
1011
1012 check_ld(){
1013     log check_ld "$@"
1014     type=$1
1015     shift 1
1016     flags=$(filter_out '-l*|*.so' $@)
1017     libs=$(filter '-l*|*.so' $@)
1018     check_$type $($cflags_filter $flags) || return
1019     flags=$($ldflags_filter $flags)
1020     libs=$($ldflags_filter $libs)
1021     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1022 }
1023
1024 print_include(){
1025     hdr=$1
1026     test "${hdr%.h}" = "${hdr}" &&
1027         echo "#include $hdr"    ||
1028         echo "#include <$hdr>"
1029 }
1030
1031 check_code(){
1032     log check_code "$@"
1033     check=$1
1034     headers=$2
1035     code=$3
1036     shift 3
1037     {
1038         for hdr in $headers; do
1039             print_include $hdr
1040         done
1041         echo "int main(void) { $code; return 0; }"
1042     } | check_$check "$@"
1043 }
1044
1045 check_cppflags(){
1046     log check_cppflags "$@"
1047     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1048 #include <stdlib.h>
1049 EOF
1050 }
1051
1052 test_cflags(){
1053     log test_cflags "$@"
1054     set -- $($cflags_filter "$@")
1055     check_cc "$@" <<EOF
1056 int x;
1057 EOF
1058 }
1059
1060 check_cflags(){
1061     log check_cflags "$@"
1062     test_cflags "$@" && add_cflags "$@"
1063 }
1064
1065 check_cxxflags(){
1066     log check_cxxflags "$@"
1067     set -- $($cflags_filter "$@")
1068     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1069 int x;
1070 EOF
1071 }
1072
1073 test_objcflags(){
1074     log test_objcflags "$@"
1075     set -- $($objcflags_filter "$@")
1076     check_objcc "$@" <<EOF
1077 int x;
1078 EOF
1079 }
1080
1081 check_objcflags(){
1082     log check_objcflags "$@"
1083     test_objcflags "$@" && add_objcflags "$@"
1084 }
1085
1086 test_ldflags(){
1087     log test_ldflags "$@"
1088     set -- $($ldflags_filter "$@")
1089     check_ld "cc" "$@" <<EOF
1090 int main(void){ return 0; }
1091 EOF
1092 }
1093
1094 check_ldflags(){
1095     log check_ldflags "$@"
1096     test_ldflags "$@" && add_ldflags "$@"
1097 }
1098
1099 test_stripflags(){
1100     log test_stripflags "$@"
1101     # call check_cc to get a fresh TMPO
1102     check_cc <<EOF
1103 int main(void) { return 0; }
1104 EOF
1105     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1106 }
1107
1108 check_stripflags(){
1109     log check_stripflags "$@"
1110     test_stripflags "$@" && add_stripflags "$@"
1111 }
1112
1113 check_header(){
1114     log check_header "$@"
1115     headers=$1
1116     shift
1117     disable_sanitized $headers
1118     {
1119         for hdr in $headers; do
1120             print_include $hdr
1121         done
1122         echo "int x;"
1123     } | check_cpp "$@" && enable_sanitized $headers
1124 }
1125
1126 check_header_objcc(){
1127     log check_header_objcc "$@"
1128     rm -f -- "$TMPO"
1129     header=$1
1130     shift
1131     disable_sanitized $header
1132     {
1133        echo "#include <$header>"
1134        echo "int main(void) { return 0; }"
1135     } | check_objcc && check_stat "$TMPO" && enable_sanitized $header
1136 }
1137
1138 check_apple_framework(){
1139     log check_apple_framework "$@"
1140     framework="$1"
1141     name="$(tolower $framework)"
1142     header="${framework}/${framework}.h"
1143     disable $name
1144     check_header_objcc $header &&
1145         enable $name && eval ${name}_extralibs='"-framework $framework"'
1146 }
1147
1148 check_func(){
1149     log check_func "$@"
1150     func=$1
1151     shift
1152     disable $func
1153     check_ld "cc" "$@" <<EOF && enable $func
1154 extern int $func();
1155 int main(void){ $func(); }
1156 EOF
1157 }
1158
1159 check_complexfunc(){
1160     log check_complexfunc "$@"
1161     func=$1
1162     narg=$2
1163     shift 2
1164     test $narg = 2 && args="f, g" || args="f * I"
1165     disable $func
1166     check_ld "cc" "$@" <<EOF && enable $func
1167 #include <complex.h>
1168 #include <math.h>
1169 float foo(complex float f, complex float g) { return $func($args); }
1170 int main(void){ return (int) foo; }
1171 EOF
1172 }
1173
1174 check_mathfunc(){
1175     log check_mathfunc "$@"
1176     func=$1
1177     narg=$2
1178     shift 2
1179     test $narg = 2 && args="f, g" || args="f"
1180     disable $func
1181     check_ld "cc" "$@" <<EOF && enable $func
1182 #include <math.h>
1183 float foo(float f, float g) { return $func($args); }
1184 int main(void){ return (int) foo; }
1185 EOF
1186 }
1187
1188 check_func_headers(){
1189     log check_func_headers "$@"
1190     headers=$1
1191     funcs=$2
1192     shift 2
1193     {
1194         for hdr in $headers; do
1195             print_include $hdr
1196         done
1197         echo "#include <stdint.h>"
1198         for func in $funcs; do
1199             echo "long check_$func(void) { return (long) $func; }"
1200         done
1201         echo "int main(void) { int ret = 0;"
1202         # LTO could optimize out the test functions without this
1203         for func in $funcs; do
1204             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1205         done
1206         echo "return ret; }"
1207     } | check_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1208 }
1209
1210 check_class_headers_cpp(){
1211     log check_class_headers_cpp "$@"
1212     headers=$1
1213     classes=$2
1214     shift 2
1215     {
1216         for hdr in $headers; do
1217             echo "#include <$hdr>"
1218         done
1219         echo "int main(void) { "
1220         i=1
1221         for class in $classes; do
1222             echo "$class obj$i;"
1223             i=$(expr $i + 1)
1224         done
1225         echo "return 0; }"
1226     } | check_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1227 }
1228
1229 check_cpp_condition(){
1230     log check_cpp_condition "$@"
1231     header=$1
1232     condition=$2
1233     shift 2
1234     check_cpp "$@" <<EOF
1235 #include <$header>
1236 #if !($condition)
1237 #error "unsatisfied condition: $condition"
1238 #endif
1239 EOF
1240 }
1241
1242 test_cflags_cc(){
1243     log test_cflags_cc "$@"
1244     flags=$1
1245     header=$2
1246     condition=$3
1247     shift 3
1248     set -- $($cflags_filter "$flags")
1249     check_cc "$@" <<EOF
1250 #include <$header>
1251 #if !($condition)
1252 #error "unsatisfied condition: $condition"
1253 #endif
1254 EOF
1255 }
1256
1257 check_lib(){
1258     log check_lib "$@"
1259     name="$1"
1260     headers="$2"
1261     funcs="$3"
1262     shift 3
1263     disable $name
1264     check_func_headers "$headers" "$funcs" "$@" &&
1265         enable $name && eval ${name}_extralibs="\$@"
1266 }
1267
1268 check_lib_cpp(){
1269     log check_lib_cpp "$@"
1270     name="$1"
1271     headers="$2"
1272     classes="$3"
1273     shift 3
1274     disable $name
1275     check_class_headers_cpp "$headers" "$classes" "$@" &&
1276         enable $name && eval ${name}_extralibs="\$@"
1277 }
1278
1279 test_pkg_config(){
1280     log test_pkg_config "$@"
1281     name="$1"
1282     pkg_version="$2"
1283     pkg="${2%% *}"
1284     headers="$3"
1285     funcs="$4"
1286     shift 4
1287     disable $name
1288     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1289     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1290     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1291     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1292         enable $name &&
1293         set_sanitized "${name}_cflags"    $pkg_cflags &&
1294         set_sanitized "${name}_extralibs" $pkg_libs
1295 }
1296
1297 check_pkg_config(){
1298     log check_pkg_config "$@"
1299     name="$1"
1300     test_pkg_config "$@" &&
1301         eval add_cflags \$${name}_cflags
1302 }
1303
1304 check_exec(){
1305     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1306 }
1307
1308 check_exec_crash(){
1309     log check_exec_crash "$@"
1310     code=$(cat)
1311
1312     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1313     # are safe but may not be available everywhere.  Thus we use
1314     # raise(SIGTERM) instead.  The check is run in a subshell so we
1315     # can redirect the "Terminated" message from the shell.  SIGBUS
1316     # is not defined by standard C so it is used conditionally.
1317
1318     (check_exec "$@") >> $logfile 2>&1 <<EOF
1319 #include <signal.h>
1320 static void sighandler(int sig){
1321     raise(SIGTERM);
1322 }
1323 int foo(void){
1324     $code
1325 }
1326 int (*func_ptr)(void) = foo;
1327 int main(void){
1328     signal(SIGILL, sighandler);
1329     signal(SIGFPE, sighandler);
1330     signal(SIGSEGV, sighandler);
1331 #ifdef SIGBUS
1332     signal(SIGBUS, sighandler);
1333 #endif
1334     return func_ptr();
1335 }
1336 EOF
1337 }
1338
1339 check_type(){
1340     log check_type "$@"
1341     headers=$1
1342     type=$2
1343     shift 2
1344     disable_sanitized "$type"
1345     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1346 }
1347
1348 check_struct(){
1349     log check_struct "$@"
1350     headers=$1
1351     struct=$2
1352     member=$3
1353     shift 3
1354     disable_sanitized "${struct}_${member}"
1355     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1356         enable_sanitized "${struct}_${member}"
1357 }
1358
1359 check_builtin(){
1360     log check_builtin "$@"
1361     name=$1
1362     headers=$2
1363     builtin=$3
1364     shift 3
1365     disable "$name"
1366     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1367 }
1368
1369 check_compile_assert(){
1370     log check_compile_assert "$@"
1371     name=$1
1372     headers=$2
1373     condition=$3
1374     shift 3
1375     disable "$name"
1376     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1377 }
1378
1379 require(){
1380     log require "$@"
1381     name_version="$1"
1382     name="${1%% *}"
1383     headers="$2"
1384     func="$3"
1385     shift 3
1386     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1387 }
1388
1389 require_cpp(){
1390     name="$1"
1391     headers="$2"
1392     classes="$3"
1393     shift 3
1394     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1395 }
1396
1397 require_header(){
1398     log require_header "$@"
1399     headers="$1"
1400     shift
1401     check_header "$headers" "$@" || die "ERROR: $headers not found"
1402 }
1403
1404 require_cpp_condition(){
1405     log require_cpp_condition "$@"
1406     header="$1"
1407     condition="$2"
1408     shift 2
1409     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1410 }
1411
1412 require_pkg_config(){
1413     log require_pkg_config "$@"
1414     pkg_version="$2"
1415     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1416 }
1417
1418 hostcc_e(){
1419     eval printf '%s\\n' $HOSTCC_E
1420 }
1421
1422 hostcc_o(){
1423     eval printf '%s\\n' $HOSTCC_O
1424 }
1425
1426 check_host_cc(){
1427     log check_host_cc "$@"
1428     cat > $TMPC
1429     log_file $TMPC
1430     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1431 }
1432
1433 check_host_cpp(){
1434     log check_host_cpp "$@"
1435     cat > $TMPC
1436     log_file $TMPC
1437     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1438 }
1439
1440 check_host_cppflags(){
1441     log check_host_cppflags "$@"
1442     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1443 #include <stdlib.h>
1444 EOF
1445 }
1446
1447 check_host_cflags(){
1448     log check_host_cflags "$@"
1449     set -- $($host_cflags_filter "$@")
1450     check_host_cc "$@" <<EOF && append host_cflags "$@"
1451 int x;
1452 EOF
1453 }
1454
1455 check_host_cpp_condition(){
1456     log check_host_cpp_condition "$@"
1457     header=$1
1458     condition=$2
1459     shift 2
1460     check_host_cpp "$@" <<EOF
1461 #include <$header>
1462 #if !($condition)
1463 #error "unsatisfied condition: $condition"
1464 #endif
1465 EOF
1466 }
1467
1468 cp_if_changed(){
1469     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1470     mkdir -p "$(dirname $2)"
1471     cp -f "$1" "$2"
1472 }
1473
1474 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1475 # system-dependent things.
1476
1477 AVCODEC_COMPONENTS="
1478     bsfs
1479     decoders
1480     encoders
1481     hwaccels
1482     parsers
1483 "
1484
1485 AVDEVICE_COMPONENTS="
1486     indevs
1487     outdevs
1488 "
1489
1490 AVFILTER_COMPONENTS="
1491     filters
1492 "
1493
1494 AVFORMAT_COMPONENTS="
1495     demuxers
1496     muxers
1497     protocols
1498 "
1499
1500 COMPONENT_LIST="
1501     $AVCODEC_COMPONENTS
1502     $AVDEVICE_COMPONENTS
1503     $AVFILTER_COMPONENTS
1504     $AVFORMAT_COMPONENTS
1505 "
1506
1507 EXAMPLE_LIST="
1508     avio_dir_cmd_example
1509     avio_reading_example
1510     decode_audio_example
1511     decode_video_example
1512     demuxing_decoding_example
1513     encode_audio_example
1514     encode_video_example
1515     extract_mvs_example
1516     filter_audio_example
1517     filtering_audio_example
1518     filtering_video_example
1519     http_multiclient_example
1520     hw_decode_example
1521     metadata_example
1522     muxing_example
1523     qsvdec_example
1524     remuxing_example
1525     resampling_audio_example
1526     scaling_video_example
1527     transcode_aac_example
1528     transcoding_example
1529     vaapi_encode_example
1530 "
1531
1532 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1533     alsa
1534     appkit
1535     avfoundation
1536     bzlib
1537     coreimage
1538     iconv
1539     libxcb
1540     libxcb_shm
1541     libxcb_shape
1542     libxcb_xfixes
1543     lzma
1544     schannel
1545     sdl2
1546     securetransport
1547     sndio
1548     xlib
1549     zlib
1550 "
1551
1552 EXTERNAL_LIBRARY_GPL_LIST="
1553     avisynth
1554     frei0r
1555     libcdio
1556     librubberband
1557     libvidstab
1558     libx264
1559     libx265
1560     libxavs
1561     libxvid
1562 "
1563
1564 EXTERNAL_LIBRARY_NONFREE_LIST="
1565     decklink
1566     libndi_newtek
1567     libfdk_aac
1568     openssl
1569     libtls
1570 "
1571
1572 EXTERNAL_LIBRARY_VERSION3_LIST="
1573     gmp
1574     libopencore_amrnb
1575     libopencore_amrwb
1576     libvmaf
1577     libvo_amrwbenc
1578     rkmpp
1579 "
1580
1581 EXTERNAL_LIBRARY_GPLV3_LIST="
1582     libsmbclient
1583 "
1584
1585 EXTERNAL_LIBRARY_LIST="
1586     $EXTERNAL_LIBRARY_GPL_LIST
1587     $EXTERNAL_LIBRARY_NONFREE_LIST
1588     $EXTERNAL_LIBRARY_VERSION3_LIST
1589     $EXTERNAL_LIBRARY_GPLV3_LIST
1590     chromaprint
1591     gcrypt
1592     gnutls
1593     jni
1594     ladspa
1595     libass
1596     libbluray
1597     libbs2b
1598     libcaca
1599     libcelt
1600     libdc1394
1601     libdrm
1602     libflite
1603     libfontconfig
1604     libfreetype
1605     libfribidi
1606     libgme
1607     libgsm
1608     libiec61883
1609     libilbc
1610     libjack
1611     libkvazaar
1612     libmodplug
1613     libmp3lame
1614     libmysofa
1615     libopencv
1616     libopenh264
1617     libopenjpeg
1618     libopenmpt
1619     libopus
1620     libpulse
1621     librsvg
1622     librtmp
1623     libshine
1624     libsmbclient
1625     libsnappy
1626     libsoxr
1627     libspeex
1628     libssh
1629     libtesseract
1630     libtheora
1631     libtwolame
1632     libv4l2
1633     libvorbis
1634     libvpx
1635     libwavpack
1636     libwebp
1637     libxml2
1638     libzimg
1639     libzmq
1640     libzvbi
1641     lv2
1642     mediacodec
1643     openal
1644     opengl
1645 "
1646
1647 HWACCEL_AUTODETECT_LIBRARY_LIST="
1648     amf
1649     audiotoolbox
1650     crystalhd
1651     cuda
1652     cuvid
1653     d3d11va
1654     dxva2
1655     nvdec
1656     nvenc
1657     vaapi
1658     vdpau
1659     videotoolbox
1660     v4l2_m2m
1661     xvmc
1662 "
1663
1664 # catchall list of things that require external libs to link
1665 EXTRALIBS_LIST="
1666     cpu_init
1667     cws2fws
1668 "
1669
1670 HWACCEL_LIBRARY_NONFREE_LIST="
1671     cuda_sdk
1672     libnpp
1673 "
1674
1675 HWACCEL_LIBRARY_LIST="
1676     $HWACCEL_LIBRARY_NONFREE_LIST
1677     libmfx
1678     mmal
1679     omx
1680     opencl
1681 "
1682
1683 DOCUMENT_LIST="
1684     doc
1685     htmlpages
1686     manpages
1687     podpages
1688     txtpages
1689 "
1690
1691 FEATURE_LIST="
1692     ftrapv
1693     gray
1694     hardcoded_tables
1695     omx_rpi
1696     runtime_cpudetect
1697     safe_bitstream_reader
1698     shared
1699     small
1700     static
1701     swscale_alpha
1702 "
1703
1704 LIBRARY_LIST="
1705     avcodec
1706     avdevice
1707     avfilter
1708     avformat
1709     avresample
1710     avutil
1711     postproc
1712     swresample
1713     swscale
1714 "
1715
1716 LICENSE_LIST="
1717     gpl
1718     nonfree
1719     version3
1720 "
1721
1722 PROGRAM_LIST="
1723     ffplay
1724     ffprobe
1725     ffserver
1726     ffmpeg
1727 "
1728
1729 SUBSYSTEM_LIST="
1730     dct
1731     dwt
1732     error_resilience
1733     faan
1734     fast_unaligned
1735     fft
1736     lsp
1737     lzo
1738     mdct
1739     pixelutils
1740     network
1741     rdft
1742 "
1743
1744 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1745 CONFIG_LIST="
1746     $DOCUMENT_LIST
1747     $EXAMPLE_LIST
1748     $EXTERNAL_LIBRARY_LIST
1749     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1750     $HWACCEL_LIBRARY_LIST
1751     $HWACCEL_AUTODETECT_LIBRARY_LIST
1752     $FEATURE_LIST
1753     $LICENSE_LIST
1754     $LIBRARY_LIST
1755     $PROGRAM_LIST
1756     $SUBSYSTEM_LIST
1757     autodetect
1758     fontconfig
1759     linux_perf
1760     memory_poisoning
1761     neon_clobber_test
1762     ossfuzz
1763     pic
1764     thumb
1765     valgrind_backtrace
1766     xmm_clobber_test
1767     $COMPONENT_LIST
1768 "
1769
1770 THREADS_LIST="
1771     pthreads
1772     os2threads
1773     w32threads
1774 "
1775
1776 ATOMICS_LIST="
1777     atomics_gcc
1778     atomics_suncc
1779     atomics_win32
1780 "
1781
1782 AUTODETECT_LIBS="
1783     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1784     $HWACCEL_AUTODETECT_LIBRARY_LIST
1785     $THREADS_LIST
1786 "
1787
1788 ARCH_LIST="
1789     aarch64
1790     alpha
1791     arm
1792     avr32
1793     avr32_ap
1794     avr32_uc
1795     bfin
1796     ia64
1797     m68k
1798     mips
1799     mips64
1800     parisc
1801     ppc
1802     ppc64
1803     s390
1804     sh4
1805     sparc
1806     sparc64
1807     tilegx
1808     tilepro
1809     tomi
1810     x86
1811     x86_32
1812     x86_64
1813 "
1814
1815 ARCH_EXT_LIST_ARM="
1816     armv5te
1817     armv6
1818     armv6t2
1819     armv8
1820     neon
1821     vfp
1822     vfpv3
1823     setend
1824 "
1825
1826 ARCH_EXT_LIST_MIPS="
1827     mipsfpu
1828     mips32r2
1829     mips32r5
1830     mips64r2
1831     mips32r6
1832     mips64r6
1833     mipsdsp
1834     mipsdspr2
1835     msa
1836 "
1837
1838 ARCH_EXT_LIST_LOONGSON="
1839     loongson2
1840     loongson3
1841     mmi
1842 "
1843
1844 ARCH_EXT_LIST_X86_SIMD="
1845     aesni
1846     amd3dnow
1847     amd3dnowext
1848     avx
1849     avx2
1850     avx512
1851     fma3
1852     fma4
1853     mmx
1854     mmxext
1855     sse
1856     sse2
1857     sse3
1858     sse4
1859     sse42
1860     ssse3
1861     xop
1862 "
1863
1864 ARCH_EXT_LIST_PPC="
1865     altivec
1866     dcbzl
1867     ldbrx
1868     power8
1869     ppc4xx
1870     vsx
1871 "
1872
1873 ARCH_EXT_LIST_X86="
1874     $ARCH_EXT_LIST_X86_SIMD
1875     cpunop
1876     i686
1877 "
1878
1879 ARCH_EXT_LIST="
1880     $ARCH_EXT_LIST_ARM
1881     $ARCH_EXT_LIST_PPC
1882     $ARCH_EXT_LIST_X86
1883     $ARCH_EXT_LIST_MIPS
1884     $ARCH_EXT_LIST_LOONGSON
1885 "
1886
1887 ARCH_FEATURES="
1888     aligned_stack
1889     fast_64bit
1890     fast_clz
1891     fast_cmov
1892     local_aligned
1893     simd_align_16
1894     simd_align_32
1895     simd_align_64
1896 "
1897
1898 BUILTIN_LIST="
1899     atomic_cas_ptr
1900     machine_rw_barrier
1901     MemoryBarrier
1902     mm_empty
1903     rdtsc
1904     sarestart
1905     sem_timedwait
1906     sync_val_compare_and_swap
1907 "
1908 HAVE_LIST_CMDLINE="
1909     inline_asm
1910     symver
1911     x86asm
1912 "
1913
1914 HAVE_LIST_PUB="
1915     bigendian
1916     fast_unaligned
1917 "
1918
1919 HEADERS_LIST="
1920     arpa_inet_h
1921     asm_types_h
1922     cdio_paranoia_h
1923     cdio_paranoia_paranoia_h
1924     cuda_h
1925     dispatch_dispatch_h
1926     dev_bktr_ioctl_bt848_h
1927     dev_bktr_ioctl_meteor_h
1928     dev_ic_bt8xx_h
1929     dev_video_bktr_ioctl_bt848_h
1930     dev_video_meteor_ioctl_meteor_h
1931     direct_h
1932     dirent_h
1933     dxgidebug_h
1934     dxva_h
1935     ES2_gl_h
1936     gsm_h
1937     io_h
1938     machine_ioctl_bt848_h
1939     machine_ioctl_meteor_h
1940     malloc_h
1941     opencv2_core_core_c_h
1942     OpenGL_gl3_h
1943     poll_h
1944     sys_param_h
1945     sys_resource_h
1946     sys_select_h
1947     sys_soundcard_h
1948     sys_time_h
1949     sys_un_h
1950     sys_videoio_h
1951     termios_h
1952     udplite_h
1953     unistd_h
1954     valgrind_valgrind_h
1955     windows_h
1956     winsock2_h
1957 "
1958
1959 INTRINSICS_LIST="
1960     intrinsics_neon
1961 "
1962
1963 COMPLEX_FUNCS="
1964     cabs
1965     cexp
1966 "
1967
1968 MATH_FUNCS="
1969     atanf
1970     atan2f
1971     cbrt
1972     cbrtf
1973     copysign
1974     cosf
1975     erf
1976     exp2
1977     exp2f
1978     expf
1979     hypot
1980     isfinite
1981     isinf
1982     isnan
1983     ldexpf
1984     llrint
1985     llrintf
1986     log2
1987     log2f
1988     log10f
1989     lrint
1990     lrintf
1991     powf
1992     rint
1993     round
1994     roundf
1995     sinf
1996     trunc
1997     truncf
1998 "
1999
2000 SYSTEM_FEATURES="
2001     atomics_native
2002     dos_paths
2003     libc_msvcrt
2004     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2005     section_data_rel_ro
2006     threads
2007     uwp
2008     winrt
2009 "
2010
2011 SYSTEM_FUNCS="
2012     access
2013     aligned_malloc
2014     arc4random
2015     clock_gettime
2016     closesocket
2017     CommandLineToArgvW
2018     fcntl
2019     getaddrinfo
2020     gethrtime
2021     getopt
2022     GetProcessAffinityMask
2023     GetProcessMemoryInfo
2024     GetProcessTimes
2025     getrusage
2026     GetSystemTimeAsFileTime
2027     gettimeofday
2028     glob
2029     glXGetProcAddress
2030     gmtime_r
2031     inet_aton
2032     isatty
2033     kbhit
2034     localtime_r
2035     lstat
2036     lzo1x_999_compress
2037     mach_absolute_time
2038     MapViewOfFile
2039     memalign
2040     mkstemp
2041     mmap
2042     mprotect
2043     nanosleep
2044     PeekNamedPipe
2045     posix_memalign
2046     pthread_cancel
2047     sched_getaffinity
2048     SecItemImport
2049     SetConsoleTextAttribute
2050     SetConsoleCtrlHandler
2051     setmode
2052     setrlimit
2053     Sleep
2054     strerror_r
2055     sysconf
2056     sysctl
2057     usleep
2058     UTGetOSTypeFromString
2059     VirtualAlloc
2060     wglGetProcAddress
2061 "
2062
2063 SYSTEM_LIBRARIES="
2064     vaapi_drm
2065     vaapi_x11
2066     vdpau_x11
2067     wincrypt
2068 "
2069
2070 TOOLCHAIN_FEATURES="
2071     as_arch_directive
2072     as_fpu_directive
2073     as_func
2074     as_object_arch
2075     asm_mod_q
2076     blocks_extension
2077     ebp_available
2078     ebx_available
2079     gnu_as
2080     gnu_windres
2081     ibm_asm
2082     inline_asm_direct_symbol_refs
2083     inline_asm_labels
2084     inline_asm_nonlocal_labels
2085     pragma_deprecated
2086     rsync_contimeout
2087     symver_asm_label
2088     symver_gnu_asm
2089     vfp_args
2090     xform_asm
2091     xmm_clobbers
2092 "
2093
2094 TYPES_LIST="
2095     CONDITION_VARIABLE_Ptr
2096     kCMVideoCodecType_HEVC
2097     socklen_t
2098     struct_addrinfo
2099     struct_group_source_req
2100     struct_ip_mreq_source
2101     struct_ipv6_mreq
2102     struct_msghdr_msg_flags
2103     struct_pollfd
2104     struct_rusage_ru_maxrss
2105     struct_sctp_event_subscribe
2106     struct_sockaddr_in6
2107     struct_sockaddr_sa_len
2108     struct_sockaddr_storage
2109     struct_stat_st_mtim_tv_nsec
2110     struct_v4l2_frmivalenum_discrete
2111 "
2112
2113 HAVE_LIST="
2114     $ARCH_EXT_LIST
2115     $(add_suffix _external $ARCH_EXT_LIST)
2116     $(add_suffix _inline   $ARCH_EXT_LIST)
2117     $ARCH_FEATURES
2118     $ATOMICS_LIST
2119     $BUILTIN_LIST
2120     $COMPLEX_FUNCS
2121     $HAVE_LIST_CMDLINE
2122     $HAVE_LIST_PUB
2123     $HEADERS_LIST
2124     $INTRINSICS_LIST
2125     $MATH_FUNCS
2126     $SYSTEM_FEATURES
2127     $SYSTEM_FUNCS
2128     $SYSTEM_LIBRARIES
2129     $THREADS_LIST
2130     $TOOLCHAIN_FEATURES
2131     $TYPES_LIST
2132     makeinfo
2133     makeinfo_html
2134     opencl_d3d11
2135     opencl_drm_arm
2136     opencl_dxva2
2137     opencl_vaapi_beignet
2138     opencl_vaapi_intel_media
2139     perl
2140     pod2man
2141     texi2html
2142 "
2143
2144 # options emitted with CONFIG_ prefix but not available on the command line
2145 CONFIG_EXTRA="
2146     aandcttables
2147     ac3dsp
2148     adts_header
2149     audio_frame_queue
2150     audiodsp
2151     blockdsp
2152     bswapdsp
2153     cabac
2154     cbs
2155     cbs_h264
2156     cbs_h265
2157     cbs_mpeg2
2158     dirac_parse
2159     dvprofile
2160     exif
2161     faandct
2162     faanidct
2163     fdctdsp
2164     flacdsp
2165     fmtconvert
2166     frame_thread_encoder
2167     g722dsp
2168     golomb
2169     gplv3
2170     h263dsp
2171     h264chroma
2172     h264dsp
2173     h264parse
2174     h264pred
2175     h264qpel
2176     hevcparse
2177     hpeldsp
2178     huffman
2179     huffyuvdsp
2180     huffyuvencdsp
2181     idctdsp
2182     iirfilter
2183     mdct15
2184     intrax8
2185     iso_media
2186     ividsp
2187     jpegtables
2188     lgplv3
2189     libx262
2190     llauddsp
2191     llviddsp
2192     llvidencdsp
2193     lpc
2194     lzf
2195     me_cmp
2196     mpeg_er
2197     mpegaudio
2198     mpegaudiodsp
2199     mpegaudioheader
2200     mpegvideo
2201     mpegvideoenc
2202     mss34dsp
2203     pixblockdsp
2204     qpeldsp
2205     qsv
2206     qsvdec
2207     qsvenc
2208     qsvvpp
2209     rangecoder
2210     riffdec
2211     riffenc
2212     rtpdec
2213     rtpenc_chain
2214     rv34dsp
2215     sinewin
2216     snappy
2217     srtp
2218     startcode
2219     texturedsp
2220     texturedspenc
2221     tpeldsp
2222     vaapi_1
2223     vaapi_encode
2224     vc1dsp
2225     videodsp
2226     vp3dsp
2227     vp56dsp
2228     vp8dsp
2229     wma_freqs
2230     wmv2dsp
2231 "
2232
2233 CMDLINE_SELECT="
2234     $ARCH_EXT_LIST
2235     $CONFIG_LIST
2236     $HAVE_LIST_CMDLINE
2237     $THREADS_LIST
2238     asm
2239     cross_compile
2240     debug
2241     extra_warnings
2242     logging
2243     lto
2244     optimizations
2245     rpath
2246     stripping
2247 "
2248
2249 PATHS_LIST="
2250     bindir
2251     datadir
2252     docdir
2253     incdir
2254     libdir
2255     mandir
2256     pkgconfigdir
2257     prefix
2258     shlibdir
2259     install_name_dir
2260 "
2261
2262 CMDLINE_SET="
2263     $PATHS_LIST
2264     ar
2265     arch
2266     as
2267     assert_level
2268     build_suffix
2269     cc
2270     objcc
2271     cpu
2272     cross_prefix
2273     custom_allocator
2274     cxx
2275     dep_cc
2276     doxygen
2277     env
2278     extra_version
2279     gas
2280     host_cc
2281     host_cflags
2282     host_extralibs
2283     host_ld
2284     host_ldflags
2285     host_os
2286     ignore_tests
2287     install
2288     ld
2289     ln_s
2290     logfile
2291     malloc_prefix
2292     nm
2293     optflags
2294     nvccflags
2295     pkg_config
2296     pkg_config_flags
2297     progs_suffix
2298     random_seed
2299     ranlib
2300     samples
2301     strip
2302     sws_max_filter_size
2303     sysinclude
2304     sysroot
2305     target_exec
2306     target_os
2307     target_path
2308     target_samples
2309     tempprefix
2310     toolchain
2311     valgrind
2312     x86asmexe
2313 "
2314
2315 CMDLINE_APPEND="
2316     extra_cflags
2317     extra_cxxflags
2318     extra_objcflags
2319     host_cppflags
2320 "
2321
2322 # code dependency declarations
2323
2324 # architecture extensions
2325
2326 armv5te_deps="arm"
2327 armv6_deps="arm"
2328 armv6t2_deps="arm"
2329 armv8_deps="aarch64"
2330 neon_deps_any="aarch64 arm"
2331 intrinsics_neon_deps="neon"
2332 vfp_deps_any="aarch64 arm"
2333 vfpv3_deps="vfp"
2334 setend_deps="arm"
2335
2336 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2337
2338 altivec_deps="ppc"
2339 dcbzl_deps="ppc"
2340 ldbrx_deps="ppc"
2341 ppc4xx_deps="ppc"
2342 vsx_deps="altivec"
2343 power8_deps="vsx"
2344
2345 loongson2_deps="mips"
2346 loongson3_deps="mips"
2347 mips32r2_deps="mips"
2348 mips32r5_deps="mips"
2349 mips32r6_deps="mips"
2350 mips64r2_deps="mips"
2351 mips64r6_deps="mips"
2352 mipsfpu_deps="mips"
2353 mipsdsp_deps="mips"
2354 mipsdspr2_deps="mips"
2355 mmi_deps="mips"
2356 msa_deps="mipsfpu"
2357
2358 cpunop_deps="i686"
2359 x86_64_select="i686"
2360 x86_64_suggest="fast_cmov"
2361
2362 amd3dnow_deps="mmx"
2363 amd3dnowext_deps="amd3dnow"
2364 i686_deps="x86"
2365 mmx_deps="x86"
2366 mmxext_deps="mmx"
2367 sse_deps="mmxext"
2368 sse2_deps="sse"
2369 sse3_deps="sse2"
2370 ssse3_deps="sse3"
2371 sse4_deps="ssse3"
2372 sse42_deps="sse4"
2373 aesni_deps="sse42"
2374 avx_deps="sse42"
2375 xop_deps="avx"
2376 fma3_deps="avx"
2377 fma4_deps="avx"
2378 avx2_deps="avx"
2379 avx512_deps="avx2"
2380
2381 mmx_external_deps="x86asm"
2382 mmx_inline_deps="inline_asm x86"
2383 mmx_suggest="mmx_external mmx_inline"
2384
2385 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2386     eval dep=\$${ext}_deps
2387     eval ${ext}_external_deps='"${dep}_external"'
2388     eval ${ext}_inline_deps='"${dep}_inline"'
2389     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2390 done
2391
2392 aligned_stack_if_any="aarch64 ppc x86"
2393 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2394 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2395 fast_unaligned_if_any="aarch64 ppc x86"
2396 simd_align_16_if_any="altivec neon sse"
2397 simd_align_32_if_any="avx"
2398 simd_align_64_if_any="avx512"
2399
2400 # system capabilities
2401 symver_if_any="symver_asm_label symver_gnu_asm"
2402 valgrind_backtrace_conflict="optimizations"
2403 valgrind_backtrace_deps="valgrind_valgrind_h"
2404
2405 # threading support
2406 atomics_gcc_if="sync_val_compare_and_swap"
2407 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2408 atomics_win32_if="MemoryBarrier"
2409 atomics_native_if_any="$ATOMICS_LIST"
2410 w32threads_deps="atomics_native"
2411 threads_if_any="$THREADS_LIST"
2412
2413 # subsystems
2414 cbs_h264_select="cbs golomb"
2415 cbs_h265_select="cbs golomb"
2416 cbs_mpeg2_select="cbs"
2417 dct_select="rdft"
2418 dirac_parse_select="golomb"
2419 error_resilience_select="me_cmp"
2420 faandct_deps="faan"
2421 faandct_select="fdctdsp"
2422 faanidct_deps="faan"
2423 faanidct_select="idctdsp"
2424 h264dsp_select="startcode"
2425 hevcparse_select="golomb"
2426 frame_thread_encoder_deps="encoders threads"
2427 intrax8_select="blockdsp idctdsp"
2428 mdct_select="fft"
2429 mdct15_select="fft"
2430 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2431 mpeg_er_select="error_resilience"
2432 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2433 mpegaudiodsp_select="dct"
2434 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2435 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2436 vc1dsp_select="h264chroma qpeldsp startcode"
2437 rdft_select="fft"
2438
2439 # decoders / encoders
2440 aac_decoder_select="adts_header mdct15 mdct sinewin"
2441 aac_fixed_decoder_select="mdct sinewin"
2442 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2443 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2444 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2445 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2446 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2447 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2448 adpcm_g722_decoder_select="g722dsp"
2449 adpcm_g722_encoder_select="g722dsp"
2450 aic_decoder_select="golomb idctdsp"
2451 alac_encoder_select="lpc"
2452 als_decoder_select="bswapdsp"
2453 amrnb_decoder_select="lsp"
2454 amrwb_decoder_select="lsp"
2455 amv_decoder_select="sp5x_decoder exif"
2456 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2457 ape_decoder_select="bswapdsp llauddsp"
2458 apng_decoder_deps="zlib"
2459 apng_encoder_deps="zlib"
2460 apng_encoder_select="llvidencdsp"
2461 aptx_decoder_select="audio_frame_queue"
2462 aptx_encoder_select="audio_frame_queue"
2463 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2464 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2465 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2466 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2467 atrac1_decoder_select="mdct sinewin"
2468 atrac3_decoder_select="mdct"
2469 atrac3p_decoder_select="mdct sinewin"
2470 avrn_decoder_select="exif jpegtables"
2471 bink_decoder_select="blockdsp hpeldsp"
2472 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2473 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2474 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2475 clearvideo_decoder_select="idctdsp"
2476 cllc_decoder_select="bswapdsp"
2477 comfortnoise_encoder_select="lpc"
2478 cook_decoder_select="audiodsp mdct sinewin"
2479 cscd_decoder_select="lzo"
2480 cscd_decoder_suggest="zlib"
2481 dca_decoder_select="mdct"
2482 dds_decoder_select="texturedsp"
2483 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2484 dnxhd_decoder_select="blockdsp idctdsp"
2485 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2486 dolby_e_decoder_select="mdct"
2487 dvvideo_decoder_select="dvprofile idctdsp"
2488 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2489 dxa_decoder_deps="zlib"
2490 dxv_decoder_select="lzf texturedsp"
2491 eac3_decoder_select="ac3_decoder"
2492 eac3_encoder_select="ac3_encoder"
2493 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2494 eatgq_decoder_select="aandcttables"
2495 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2496 exr_decoder_deps="zlib"
2497 ffv1_decoder_select="rangecoder"
2498 ffv1_encoder_select="rangecoder"
2499 ffvhuff_decoder_select="huffyuv_decoder"
2500 ffvhuff_encoder_select="huffyuv_encoder"
2501 fic_decoder_select="golomb"
2502 flac_decoder_select="flacdsp"
2503 flac_encoder_select="bswapdsp flacdsp lpc"
2504 flashsv2_decoder_deps="zlib"
2505 flashsv2_encoder_deps="zlib"
2506 flashsv_decoder_deps="zlib"
2507 flashsv_encoder_deps="zlib"
2508 flv_decoder_select="h263_decoder"
2509 flv_encoder_select="h263_encoder"
2510 fourxm_decoder_select="blockdsp bswapdsp"
2511 fraps_decoder_select="bswapdsp huffman"
2512 g2m_decoder_deps="zlib"
2513 g2m_decoder_select="blockdsp idctdsp jpegtables"
2514 g729_decoder_select="audiodsp"
2515 h261_decoder_select="mpegvideo"
2516 h261_encoder_select="aandcttables mpegvideoenc"
2517 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2518 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2519 h263i_decoder_select="h263_decoder"
2520 h263p_decoder_select="h263_decoder"
2521 h263p_encoder_select="h263_encoder"
2522 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2523 h264_decoder_suggest="error_resilience"
2524 hap_decoder_select="snappy texturedsp"
2525 hap_encoder_deps="libsnappy"
2526 hap_encoder_select="texturedspenc"
2527 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2528 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2529 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2530 iac_decoder_select="imc_decoder"
2531 imc_decoder_select="bswapdsp fft mdct sinewin"
2532 indeo3_decoder_select="hpeldsp"
2533 indeo4_decoder_select="ividsp"
2534 indeo5_decoder_select="ividsp"
2535 interplay_video_decoder_select="hpeldsp"
2536 jpegls_decoder_select="mjpeg_decoder"
2537 jv_decoder_select="blockdsp"
2538 lagarith_decoder_select="llviddsp"
2539 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2540 magicyuv_decoder_select="llviddsp"
2541 magicyuv_encoder_select="llvidencdsp"
2542 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2543 metasound_decoder_select="lsp mdct sinewin"
2544 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2545 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2546 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2547 mjpegb_decoder_select="mjpeg_decoder"
2548 mlp_decoder_select="mlp_parser"
2549 mlp_encoder_select="lpc"
2550 motionpixels_decoder_select="bswapdsp"
2551 mp1_decoder_select="mpegaudio"
2552 mp1float_decoder_select="mpegaudio"
2553 mp2_decoder_select="mpegaudio"
2554 mp2float_decoder_select="mpegaudio"
2555 mp3_decoder_select="mpegaudio"
2556 mp3adu_decoder_select="mpegaudio"
2557 mp3adufloat_decoder_select="mpegaudio"
2558 mp3float_decoder_select="mpegaudio"
2559 mp3on4_decoder_select="mpegaudio"
2560 mp3on4float_decoder_select="mpegaudio"
2561 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2562 mpc8_decoder_select="mpegaudiodsp"
2563 mpegvideo_decoder_select="mpegvideo"
2564 mpeg1video_decoder_select="mpegvideo"
2565 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2566 mpeg2video_decoder_select="mpegvideo"
2567 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2568 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2569 mpeg4_encoder_select="h263_encoder"
2570 msa1_decoder_select="mss34dsp"
2571 mscc_decoder_deps="zlib"
2572 msmpeg4v1_decoder_select="h263_decoder"
2573 msmpeg4v2_decoder_select="h263_decoder"
2574 msmpeg4v2_encoder_select="h263_encoder"
2575 msmpeg4v3_decoder_select="h263_decoder"
2576 msmpeg4v3_encoder_select="h263_encoder"
2577 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2578 mts2_decoder_select="mss34dsp"
2579 mxpeg_decoder_select="mjpeg_decoder"
2580 nellymoser_decoder_select="mdct sinewin"
2581 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2582 nuv_decoder_select="idctdsp lzo"
2583 on2avc_decoder_select="mdct"
2584 opus_decoder_deps="swresample"
2585 opus_decoder_select="mdct15"
2586 opus_encoder_select="audio_frame_queue mdct15"
2587 png_decoder_deps="zlib"
2588 png_encoder_deps="zlib"
2589 png_encoder_select="llvidencdsp"
2590 prores_decoder_select="blockdsp idctdsp"
2591 prores_encoder_select="fdctdsp"
2592 qcelp_decoder_select="lsp"
2593 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2594 ra_144_decoder_select="audiodsp"
2595 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2596 ralf_decoder_select="golomb"
2597 rawvideo_decoder_select="bswapdsp"
2598 rscc_decoder_deps="zlib"
2599 rtjpeg_decoder_select="me_cmp"
2600 rv10_decoder_select="h263_decoder"
2601 rv10_encoder_select="h263_encoder"
2602 rv20_decoder_select="h263_decoder"
2603 rv20_encoder_select="h263_encoder"
2604 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2605 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2606 screenpresso_decoder_deps="zlib"
2607 shorten_decoder_select="bswapdsp"
2608 sipr_decoder_select="lsp"
2609 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2610 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2611 sonic_decoder_select="golomb rangecoder"
2612 sonic_encoder_select="golomb rangecoder"
2613 sonic_ls_encoder_select="golomb rangecoder"
2614 sp5x_decoder_select="mjpeg_decoder"
2615 srgc_decoder_deps="zlib"
2616 svq1_decoder_select="hpeldsp"
2617 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2618 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2619 svq3_decoder_suggest="zlib"
2620 tak_decoder_select="audiodsp"
2621 tdsc_decoder_deps="zlib"
2622 tdsc_decoder_select="mjpeg_decoder"
2623 theora_decoder_select="vp3_decoder"
2624 thp_decoder_select="mjpeg_decoder"
2625 tiff_decoder_suggest="zlib lzma"
2626 tiff_encoder_suggest="zlib"
2627 truehd_decoder_select="mlp_parser"
2628 truehd_encoder_select="lpc"
2629 truemotion2_decoder_select="bswapdsp"
2630 truespeech_decoder_select="bswapdsp"
2631 tscc_decoder_deps="zlib"
2632 twinvq_decoder_select="mdct lsp sinewin"
2633 txd_decoder_select="texturedsp"
2634 utvideo_decoder_select="bswapdsp llviddsp"
2635 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2636 vble_decoder_select="llviddsp"
2637 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2638 vc1image_decoder_select="vc1_decoder"
2639 vorbis_decoder_select="mdct"
2640 vorbis_encoder_select="mdct"
2641 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2642 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2643 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2644 vp6a_decoder_select="vp6_decoder"
2645 vp6f_decoder_select="vp6_decoder"
2646 vp7_decoder_select="h264pred videodsp vp8dsp"
2647 vp8_decoder_select="h264pred videodsp vp8dsp"
2648 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2649 webp_decoder_select="vp8_decoder exif"
2650 wmalossless_decoder_select="llauddsp"
2651 wmapro_decoder_select="mdct sinewin wma_freqs"
2652 wmav1_decoder_select="mdct sinewin wma_freqs"
2653 wmav1_encoder_select="mdct sinewin wma_freqs"
2654 wmav2_decoder_select="mdct sinewin wma_freqs"
2655 wmav2_encoder_select="mdct sinewin wma_freqs"
2656 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2657 wmv1_decoder_select="h263_decoder"
2658 wmv1_encoder_select="h263_encoder"
2659 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2660 wmv2_encoder_select="h263_encoder wmv2dsp"
2661 wmv3_decoder_select="vc1_decoder"
2662 wmv3image_decoder_select="wmv3_decoder"
2663 xma1_decoder_select="wmapro_decoder"
2664 xma2_decoder_select="wmapro_decoder"
2665 zerocodec_decoder_deps="zlib"
2666 zlib_decoder_deps="zlib"
2667 zlib_encoder_deps="zlib"
2668 zmbv_decoder_deps="zlib"
2669 zmbv_encoder_deps="zlib"
2670
2671 # hardware accelerators
2672 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2673 cuda_deps_any="libdl LoadLibrary"
2674 cuvid_deps="cuda"
2675 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2676 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2677 nvdec_deps="cuda"
2678 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2679 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2680 xvmc_deps="X11_extensions_XvMClib_h"
2681
2682 h263_vaapi_hwaccel_deps="vaapi"
2683 h263_vaapi_hwaccel_select="h263_decoder"
2684 h263_videotoolbox_hwaccel_deps="videotoolbox"
2685 h263_videotoolbox_hwaccel_select="h263_decoder"
2686 h264_d3d11va_hwaccel_deps="d3d11va"
2687 h264_d3d11va_hwaccel_select="h264_decoder"
2688 h264_d3d11va2_hwaccel_deps="d3d11va"
2689 h264_d3d11va2_hwaccel_select="h264_decoder"
2690 h264_dxva2_hwaccel_deps="dxva2"
2691 h264_dxva2_hwaccel_select="h264_decoder"
2692 h264_nvdec_hwaccel_deps="nvdec"
2693 h264_nvdec_hwaccel_select="h264_decoder"
2694 h264_vaapi_hwaccel_deps="vaapi"
2695 h264_vaapi_hwaccel_select="h264_decoder"
2696 h264_vdpau_hwaccel_deps="vdpau"
2697 h264_vdpau_hwaccel_select="h264_decoder"
2698 h264_videotoolbox_hwaccel_deps="videotoolbox"
2699 h264_videotoolbox_hwaccel_select="h264_decoder"
2700 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2701 hevc_d3d11va_hwaccel_select="hevc_decoder"
2702 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2703 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2704 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2705 hevc_dxva2_hwaccel_select="hevc_decoder"
2706 hevc_nvdec_hwaccel_deps="nvdec"
2707 hevc_nvdec_hwaccel_select="hevc_decoder"
2708 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2709 hevc_vaapi_hwaccel_select="hevc_decoder"
2710 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2711 hevc_vdpau_hwaccel_select="hevc_decoder"
2712 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2713 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2714 mpeg_xvmc_hwaccel_deps="xvmc"
2715 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2716 mpeg1_nvdec_hwaccel_deps="nvdec"
2717 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2718 mpeg1_vdpau_hwaccel_deps="vdpau"
2719 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2720 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2721 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2722 mpeg1_xvmc_hwaccel_deps="xvmc"
2723 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2724 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2725 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2726 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2727 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2728 mpeg2_dxva2_hwaccel_deps="dxva2"
2729 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2730 mpeg2_nvdec_hwaccel_deps="nvdec"
2731 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2732 mpeg2_vaapi_hwaccel_deps="vaapi"
2733 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2734 mpeg2_vdpau_hwaccel_deps="vdpau"
2735 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2736 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2737 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2738 mpeg2_xvmc_hwaccel_deps="xvmc"
2739 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2740 mpeg4_nvdec_hwaccel_deps="nvdec"
2741 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2742 mpeg4_vaapi_hwaccel_deps="vaapi"
2743 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2744 mpeg4_vdpau_hwaccel_deps="vdpau"
2745 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2746 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2747 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2748 vc1_d3d11va_hwaccel_deps="d3d11va"
2749 vc1_d3d11va_hwaccel_select="vc1_decoder"
2750 vc1_d3d11va2_hwaccel_deps="d3d11va"
2751 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2752 vc1_dxva2_hwaccel_deps="dxva2"
2753 vc1_dxva2_hwaccel_select="vc1_decoder"
2754 vc1_nvdec_hwaccel_deps="nvdec"
2755 vc1_nvdec_hwaccel_select="vc1_decoder"
2756 vc1_vaapi_hwaccel_deps="vaapi"
2757 vc1_vaapi_hwaccel_select="vc1_decoder"
2758 vc1_vdpau_hwaccel_deps="vdpau"
2759 vc1_vdpau_hwaccel_select="vc1_decoder"
2760 vp8_nvdec_hwaccel_deps="nvdec"
2761 vp8_nvdec_hwaccel_select="vp8_decoder"
2762 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2763 vp8_vaapi_hwaccel_select="vp8_decoder"
2764 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2765 vp9_d3d11va_hwaccel_select="vp9_decoder"
2766 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2767 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2768 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2769 vp9_dxva2_hwaccel_select="vp9_decoder"
2770 vp9_nvdec_hwaccel_deps="nvdec"
2771 vp9_nvdec_hwaccel_select="vp9_decoder"
2772 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2773 vp9_vaapi_hwaccel_select="vp9_decoder"
2774 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2775 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2776 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2777 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2778 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2779 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2780
2781 # hardware-accelerated codecs
2782 omx_deps="libdl pthreads"
2783 omx_rpi_select="omx"
2784 qsv_deps="libmfx"
2785 qsvdec_select="qsv"
2786 qsvenc_select="qsv"
2787 qsvvpp_select="qsv"
2788 vaapi_encode_deps="vaapi"
2789 v4l2_m2m_deps_any="linux_videodev2_h"
2790
2791 hwupload_cuda_filter_deps="cuda"
2792 scale_npp_filter_deps="cuda libnpp"
2793 scale_cuda_filter_deps="cuda_sdk"
2794 thumbnail_cuda_filter_deps="cuda_sdk"
2795
2796 amf_deps_any="libdl LoadLibrary"
2797 nvenc_deps="cuda"
2798 nvenc_deps_any="libdl LoadLibrary"
2799 nvenc_encoder_deps="nvenc"
2800
2801 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2802 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2803 h264_amf_encoder_deps="amf"
2804 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2805 h264_cuvid_decoder_deps="cuvid"
2806 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2807 h264_mediacodec_decoder_deps="mediacodec"
2808 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2809 h264_mmal_decoder_deps="mmal"
2810 h264_nvenc_encoder_deps="nvenc"
2811 h264_omx_encoder_deps="omx"
2812 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2813 h264_qsv_encoder_select="qsvenc"
2814 h264_rkmpp_decoder_deps="rkmpp"
2815 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2816 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2817 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2818 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2819 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2820 hevc_amf_encoder_deps="amf"
2821 hevc_cuvid_decoder_deps="cuvid"
2822 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2823 hevc_mediacodec_decoder_deps="mediacodec"
2824 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2825 hevc_nvenc_encoder_deps="nvenc"
2826 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2827 hevc_qsv_encoder_select="hevcparse qsvenc"
2828 hevc_rkmpp_decoder_deps="rkmpp"
2829 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2830 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2831 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2832 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2833 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2834 mjpeg_cuvid_decoder_deps="cuvid"
2835 mjpeg_qsv_encoder_deps="libmfx"
2836 mjpeg_qsv_encoder_select="qsvenc"
2837 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2838 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2839 mpeg1_cuvid_decoder_deps="cuvid"
2840 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2841 mpeg2_crystalhd_decoder_select="crystalhd"
2842 mpeg2_cuvid_decoder_deps="cuvid"
2843 mpeg2_mmal_decoder_deps="mmal"
2844 mpeg2_mediacodec_decoder_deps="mediacodec"
2845 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2846 mpeg2_qsv_encoder_select="qsvenc"
2847 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2848 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2849 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2850 mpeg4_crystalhd_decoder_select="crystalhd"
2851 mpeg4_cuvid_decoder_deps="cuvid"
2852 mpeg4_mediacodec_decoder_deps="mediacodec"
2853 mpeg4_mmal_decoder_deps="mmal"
2854 mpeg4_omx_encoder_deps="omx"
2855 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2856 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2857 msmpeg4_crystalhd_decoder_select="crystalhd"
2858 nvenc_h264_encoder_select="h264_nvenc_encoder"
2859 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2860 vc1_crystalhd_decoder_select="crystalhd"
2861 vc1_cuvid_decoder_deps="cuvid"
2862 vc1_mmal_decoder_deps="mmal"
2863 vc1_qsv_decoder_select="qsvdec vc1_parser"
2864 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2865 vp8_cuvid_decoder_deps="cuvid"
2866 vp8_mediacodec_decoder_deps="mediacodec"
2867 vp8_qsv_decoder_select="qsvdec vp8_parser"
2868 vp8_rkmpp_decoder_deps="rkmpp"
2869 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2870 vp8_vaapi_encoder_select="vaapi_encode"
2871 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2872 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2873 vp9_cuvid_decoder_deps="cuvid"
2874 vp9_mediacodec_decoder_deps="mediacodec"
2875 vp9_rkmpp_decoder_deps="rkmpp"
2876 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2877 vp9_vaapi_encoder_select="vaapi_encode"
2878 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2879 wmv3_crystalhd_decoder_select="crystalhd"
2880
2881 # parsers
2882 aac_parser_select="adts_header"
2883 h264_parser_select="golomb h264dsp h264parse"
2884 hevc_parser_select="hevcparse"
2885 mpegaudio_parser_select="mpegaudioheader"
2886 mpegvideo_parser_select="mpegvideo"
2887 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2888 vc1_parser_select="vc1dsp"
2889
2890 # bitstream_filters
2891 aac_adtstoasc_bsf_select="adts_header"
2892 h264_metadata_bsf_select="cbs_h264"
2893 h264_redundant_pps_bsf_select="cbs_h264"
2894 hevc_metadata_bsf_select="cbs_h265"
2895 mjpeg2jpeg_bsf_select="jpegtables"
2896 mpeg2_metadata_bsf_select="cbs_mpeg2"
2897 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2898
2899 # external libraries
2900 aac_at_decoder_deps="audiotoolbox"
2901 aac_at_decoder_select="aac_adtstoasc_bsf"
2902 ac3_at_decoder_deps="audiotoolbox"
2903 ac3_at_decoder_select="ac3_parser"
2904 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2905 alac_at_decoder_deps="audiotoolbox"
2906 amr_nb_at_decoder_deps="audiotoolbox"
2907 avisynth_deps_any="libdl LoadLibrary"
2908 avisynth_demuxer_deps="avisynth"
2909 avisynth_demuxer_select="riffdec"
2910 eac3_at_decoder_deps="audiotoolbox"
2911 eac3_at_decoder_select="ac3_parser"
2912 gsm_ms_at_decoder_deps="audiotoolbox"
2913 ilbc_at_decoder_deps="audiotoolbox"
2914 mp1_at_decoder_deps="audiotoolbox"
2915 mp2_at_decoder_deps="audiotoolbox"
2916 mp3_at_decoder_deps="audiotoolbox"
2917 mp1_at_decoder_select="mpegaudioheader"
2918 mp2_at_decoder_select="mpegaudioheader"
2919 mp3_at_decoder_select="mpegaudioheader"
2920 pcm_alaw_at_decoder_deps="audiotoolbox"
2921 pcm_mulaw_at_decoder_deps="audiotoolbox"
2922 qdmc_at_decoder_deps="audiotoolbox"
2923 qdm2_at_decoder_deps="audiotoolbox"
2924 aac_at_encoder_deps="audiotoolbox"
2925 aac_at_encoder_select="audio_frame_queue"
2926 alac_at_encoder_deps="audiotoolbox"
2927 alac_at_encoder_select="audio_frame_queue"
2928 ilbc_at_encoder_deps="audiotoolbox"
2929 ilbc_at_encoder_select="audio_frame_queue"
2930 pcm_alaw_at_encoder_deps="audiotoolbox"
2931 pcm_alaw_at_encoder_select="audio_frame_queue"
2932 pcm_mulaw_at_encoder_deps="audiotoolbox"
2933 pcm_mulaw_at_encoder_select="audio_frame_queue"
2934 chromaprint_muxer_deps="chromaprint"
2935 h264_videotoolbox_encoder_deps="pthreads"
2936 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2937 hevc_videotoolbox_encoder_deps="pthreads"
2938 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
2939 libcelt_decoder_deps="libcelt"
2940 libfdk_aac_decoder_deps="libfdk_aac"
2941 libfdk_aac_encoder_deps="libfdk_aac"
2942 libfdk_aac_encoder_select="audio_frame_queue"
2943 libgme_demuxer_deps="libgme"
2944 libgsm_decoder_deps="libgsm"
2945 libgsm_encoder_deps="libgsm"
2946 libgsm_ms_decoder_deps="libgsm"
2947 libgsm_ms_encoder_deps="libgsm"
2948 libilbc_decoder_deps="libilbc"
2949 libilbc_encoder_deps="libilbc"
2950 libkvazaar_encoder_deps="libkvazaar"
2951 libmodplug_demuxer_deps="libmodplug"
2952 libmp3lame_encoder_deps="libmp3lame"
2953 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2954 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2955 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2956 libopencore_amrnb_encoder_select="audio_frame_queue"
2957 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2958 libopenh264_decoder_deps="libopenh264"
2959 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2960 libopenh264_encoder_deps="libopenh264"
2961 libopenjpeg_decoder_deps="libopenjpeg"
2962 libopenjpeg_encoder_deps="libopenjpeg"
2963 libopenmpt_demuxer_deps="libopenmpt"
2964 libopus_decoder_deps="libopus"
2965 libopus_encoder_deps="libopus"
2966 libopus_encoder_select="audio_frame_queue"
2967 librsvg_decoder_deps="librsvg"
2968 libshine_encoder_deps="libshine"
2969 libshine_encoder_select="audio_frame_queue"
2970 libspeex_decoder_deps="libspeex"
2971 libspeex_encoder_deps="libspeex"
2972 libspeex_encoder_select="audio_frame_queue"
2973 libtheora_encoder_deps="libtheora"
2974 libtwolame_encoder_deps="libtwolame"
2975 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2976 libvorbis_decoder_deps="libvorbis"
2977 libvorbis_encoder_deps="libvorbis libvorbisenc"
2978 libvorbis_encoder_select="audio_frame_queue"
2979 libvpx_vp8_decoder_deps="libvpx"
2980 libvpx_vp8_encoder_deps="libvpx"
2981 libvpx_vp9_decoder_deps="libvpx"
2982 libvpx_vp9_encoder_deps="libvpx"
2983 libwavpack_encoder_deps="libwavpack"
2984 libwavpack_encoder_select="audio_frame_queue"
2985 libwebp_encoder_deps="libwebp"
2986 libwebp_anim_encoder_deps="libwebp"
2987 libx262_encoder_deps="libx262"
2988 libx264_encoder_deps="libx264"
2989 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2990 libx264rgb_encoder_select="libx264_encoder"
2991 libx265_encoder_deps="libx265"
2992 libxavs_encoder_deps="libxavs"
2993 libxvid_encoder_deps="libxvid"
2994 libzvbi_teletext_decoder_deps="libzvbi"
2995 videotoolbox_suggest="coreservices"
2996 videotoolbox_deps="corefoundation coremedia corevideo"
2997 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2998
2999 # demuxers / muxers
3000 ac3_demuxer_select="ac3_parser"
3001 aiff_muxer_select="iso_media"
3002 asf_demuxer_select="riffdec"
3003 asf_o_demuxer_select="riffdec"
3004 asf_muxer_select="riffenc"
3005 asf_stream_muxer_select="asf_muxer"
3006 avi_demuxer_select="iso_media riffdec exif"
3007 avi_muxer_select="riffenc"
3008 caf_demuxer_select="iso_media riffdec"
3009 caf_muxer_select="iso_media"
3010 dash_muxer_select="mp4_muxer"
3011 dash_demuxer_deps="libxml2"
3012 dirac_demuxer_select="dirac_parser"
3013 dts_demuxer_select="dca_parser"
3014 dtshd_demuxer_select="dca_parser"
3015 dv_demuxer_select="dvprofile"
3016 dv_muxer_select="dvprofile"
3017 dxa_demuxer_select="riffdec"
3018 eac3_demuxer_select="ac3_parser"
3019 f4v_muxer_select="mov_muxer"
3020 fifo_muxer_deps="threads"
3021 flac_demuxer_select="flac_parser"
3022 hds_muxer_select="flv_muxer"
3023 hls_muxer_select="mpegts_muxer"
3024 hls_muxer_suggest="gcrypt openssl"
3025 image2_alias_pix_demuxer_select="image2_demuxer"
3026 image2_brender_pix_demuxer_select="image2_demuxer"
3027 ipod_muxer_select="mov_muxer"
3028 ismv_muxer_select="mov_muxer"
3029 matroska_audio_muxer_select="matroska_muxer"
3030 matroska_demuxer_select="iso_media riffdec"
3031 matroska_demuxer_suggest="bzlib lzo zlib"
3032 matroska_muxer_select="iso_media riffenc"
3033 mmf_muxer_select="riffenc"
3034 mov_demuxer_select="iso_media riffdec"
3035 mov_demuxer_suggest="zlib"
3036 mov_muxer_select="iso_media riffenc rtpenc_chain"
3037 mp3_demuxer_select="mpegaudio_parser"
3038 mp3_muxer_select="mpegaudioheader"
3039 mp4_muxer_select="mov_muxer"
3040 mpegts_demuxer_select="iso_media"
3041 mpegts_muxer_select="adts_muxer latm_muxer"
3042 mpegtsraw_demuxer_select="mpegts_demuxer"
3043 mxf_d10_muxer_select="mxf_muxer"
3044 mxf_opatom_muxer_select="mxf_muxer"
3045 nut_muxer_select="riffenc"
3046 nuv_demuxer_select="riffdec"
3047 oga_muxer_select="ogg_muxer"
3048 ogg_demuxer_select="dirac_parse"
3049 ogv_muxer_select="ogg_muxer"
3050 opus_muxer_select="ogg_muxer"
3051 psp_muxer_select="mov_muxer"
3052 rtp_demuxer_select="sdp_demuxer"
3053 rtp_muxer_select="golomb"
3054 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3055 rtsp_demuxer_select="http_protocol rtpdec"
3056 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3057 sap_demuxer_select="sdp_demuxer"
3058 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3059 sdp_demuxer_select="rtpdec"
3060 smoothstreaming_muxer_select="ismv_muxer"
3061 spdif_demuxer_select="adts_header"
3062 spdif_muxer_select="adts_header"
3063 spx_muxer_select="ogg_muxer"
3064 swf_demuxer_suggest="zlib"
3065 tak_demuxer_select="tak_parser"
3066 tg2_muxer_select="mov_muxer"
3067 tgp_muxer_select="mov_muxer"
3068 vobsub_demuxer_select="mpegps_demuxer"
3069 w64_demuxer_select="wav_demuxer"
3070 w64_muxer_select="wav_muxer"
3071 wav_demuxer_select="riffdec"
3072 wav_muxer_select="riffenc"
3073 webm_muxer_select="iso_media riffenc"
3074 webm_dash_manifest_demuxer_select="matroska_demuxer"
3075 wtv_demuxer_select="mpegts_demuxer riffdec"
3076 wtv_muxer_select="mpegts_muxer riffenc"
3077 xmv_demuxer_select="riffdec"
3078 xwma_demuxer_select="riffdec"
3079
3080 # indevs / outdevs
3081 alsa_indev_deps="alsa"
3082 alsa_outdev_deps="alsa"
3083 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3084 avfoundation_indev_suggest="coregraphics applicationservices"
3085 avfoundation_indev_extralibs="-framework Foundation"
3086 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3087 caca_outdev_deps="libcaca"
3088 decklink_deps_any="libdl LoadLibrary"
3089 decklink_indev_deps="decklink threads"
3090 decklink_indev_extralibs="-lstdc++"
3091 decklink_outdev_deps="decklink threads"
3092 decklink_outdev_extralibs="-lstdc++"
3093 libndi_newtek_indev_deps="libndi_newtek"
3094 libndi_newtek_indev_extralibs="-lndi"
3095 libndi_newtek_outdev_deps="libndi_newtek"
3096 libndi_newtek_outdev_extralibs="-lndi"
3097 dshow_indev_deps="IBaseFilter"
3098 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3099 fbdev_indev_deps="linux_fb_h"
3100 fbdev_outdev_deps="linux_fb_h"
3101 gdigrab_indev_deps="CreateDIBSection"
3102 gdigrab_indev_extralibs="-lgdi32"
3103 gdigrab_indev_select="bmp_decoder"
3104 iec61883_indev_deps="libiec61883"
3105 jack_indev_deps="libjack"
3106 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3107 kmsgrab_indev_deps="libdrm"
3108 lavfi_indev_deps="avfilter"
3109 libcdio_indev_deps="libcdio"
3110 libdc1394_indev_deps="libdc1394"
3111 openal_indev_deps="openal"
3112 opengl_outdev_deps="opengl"
3113 oss_indev_deps_any="sys_soundcard_h"
3114 oss_outdev_deps_any="sys_soundcard_h"
3115 pulse_indev_deps="libpulse"
3116 pulse_outdev_deps="libpulse"
3117 sdl2_outdev_deps="sdl2"
3118 sndio_indev_deps="sndio"
3119 sndio_outdev_deps="sndio"
3120 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3121 v4l2_indev_suggest="libv4l2"
3122 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3123 v4l2_outdev_suggest="libv4l2"
3124 vfwcap_indev_deps="vfw32 vfwcap_defines"
3125 xcbgrab_indev_deps="libxcb"
3126 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3127 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3128 xv_outdev_extralibs="-lXv -lX11 -lXext"
3129
3130 # protocols
3131 async_protocol_deps="threads"
3132 bluray_protocol_deps="libbluray"
3133 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3134 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3135 ffrtmpcrypt_protocol_select="tcp_protocol"
3136 ffrtmphttp_protocol_conflict="librtmp_protocol"
3137 ffrtmphttp_protocol_select="http_protocol"
3138 ftp_protocol_select="tcp_protocol"
3139 gopher_protocol_select="network"
3140 http_protocol_select="tcp_protocol"
3141 http_protocol_suggest="zlib"
3142 httpproxy_protocol_select="tcp_protocol"
3143 httpproxy_protocol_suggest="zlib"
3144 https_protocol_select="tls_protocol"
3145 https_protocol_suggest="zlib"
3146 icecast_protocol_select="http_protocol"
3147 librtmp_protocol_deps="librtmp"
3148 librtmpe_protocol_deps="librtmp"
3149 librtmps_protocol_deps="librtmp"
3150 librtmpt_protocol_deps="librtmp"
3151 librtmpte_protocol_deps="librtmp"
3152 libsmbclient_protocol_deps="libsmbclient gplv3"
3153 libssh_protocol_deps="libssh"
3154 libtls_conflict="openssl gnutls"
3155 mmsh_protocol_select="http_protocol"
3156 mmst_protocol_select="network"
3157 rtmp_protocol_conflict="librtmp_protocol"
3158 rtmp_protocol_select="tcp_protocol"
3159 rtmp_protocol_suggest="zlib"
3160 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3161 rtmpe_protocol_suggest="zlib"
3162 rtmps_protocol_conflict="librtmp_protocol"
3163 rtmps_protocol_select="tls_protocol"
3164 rtmps_protocol_suggest="zlib"
3165 rtmpt_protocol_select="ffrtmphttp_protocol"
3166 rtmpt_protocol_suggest="zlib"
3167 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3168 rtmpte_protocol_suggest="zlib"
3169 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3170 rtmpts_protocol_suggest="zlib"
3171 rtp_protocol_select="udp_protocol"
3172 schannel_conflict="openssl gnutls libtls"
3173 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3174 sctp_protocol_select="network"
3175 securetransport_conflict="openssl gnutls libtls"
3176 srtp_protocol_select="rtp_protocol srtp"
3177 tcp_protocol_select="network"
3178 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls"
3179 tls_protocol_select="tcp_protocol"
3180 udp_protocol_select="network"
3181 udplite_protocol_select="network"
3182 unix_protocol_deps="sys_un_h"
3183 unix_protocol_select="network"
3184
3185 # filters
3186 afftfilt_filter_deps="avcodec"
3187 afftfilt_filter_select="fft"
3188 afir_filter_deps="avcodec"
3189 afir_filter_select="fft"
3190 amovie_filter_deps="avcodec avformat"
3191 aresample_filter_deps="swresample"
3192 ass_filter_deps="libass"
3193 atempo_filter_deps="avcodec"
3194 atempo_filter_select="rdft"
3195 azmq_filter_deps="libzmq"
3196 blackframe_filter_deps="gpl"
3197 boxblur_filter_deps="gpl"
3198 bs2b_filter_deps="libbs2b"
3199 colormatrix_filter_deps="gpl"
3200 coreimage_filter_deps="coreimage appkit"
3201 coreimage_filter_extralibs="-framework OpenGL"
3202 coreimagesrc_filter_deps="coreimage appkit"
3203 coreimagesrc_filter_extralibs="-framework OpenGL"
3204 cover_rect_filter_deps="avcodec avformat gpl"
3205 cropdetect_filter_deps="gpl"
3206 deinterlace_qsv_filter_deps="libmfx"
3207 deinterlace_vaapi_filter_deps="vaapi"
3208 delogo_filter_deps="gpl"
3209 deshake_filter_select="pixelutils"
3210 drawtext_filter_deps="libfreetype"
3211 drawtext_filter_suggest="libfontconfig libfribidi"
3212 elbg_filter_deps="avcodec"
3213 eq_filter_deps="gpl"
3214 fftfilt_filter_deps="avcodec"
3215 fftfilt_filter_select="rdft"
3216 find_rect_filter_deps="avcodec avformat gpl"
3217 firequalizer_filter_deps="avcodec"
3218 firequalizer_filter_select="rdft"
3219 flite_filter_deps="libflite"
3220 framerate_filter_select="pixelutils"
3221 frei0r_filter_deps="frei0r libdl"
3222 frei0r_src_filter_deps="frei0r libdl"
3223 fspp_filter_deps="gpl"
3224 geq_filter_deps="gpl"
3225 histeq_filter_deps="gpl"
3226 hqdn3d_filter_deps="gpl"
3227 interlace_filter_deps="gpl"
3228 kerndeint_filter_deps="gpl"
3229 ladspa_filter_deps="ladspa libdl"
3230 lv2_filter_deps="lv2"
3231 mcdeint_filter_deps="avcodec gpl"
3232 movie_filter_deps="avcodec avformat"
3233 mpdecimate_filter_deps="gpl"
3234 mpdecimate_filter_select="pixelutils"
3235 mptestsrc_filter_deps="gpl"
3236 negate_filter_deps="lut_filter"
3237 nnedi_filter_deps="gpl"
3238 ocr_filter_deps="libtesseract"
3239 ocv_filter_deps="libopencv"
3240 overlay_opencl_filter_deps="opencl"
3241 overlay_qsv_filter_deps="libmfx"
3242 overlay_qsv_filter_select="qsvvpp"
3243 owdenoise_filter_deps="gpl"
3244 pan_filter_deps="swresample"
3245 perspective_filter_deps="gpl"
3246 phase_filter_deps="gpl"
3247 pp7_filter_deps="gpl"
3248 pp_filter_deps="gpl postproc"
3249 pullup_filter_deps="gpl"
3250 removelogo_filter_deps="avcodec avformat swscale"
3251 repeatfields_filter_deps="gpl"
3252 resample_filter_deps="avresample"
3253 rubberband_filter_deps="librubberband"
3254 sab_filter_deps="gpl swscale"
3255 scale2ref_filter_deps="swscale"
3256 scale_filter_deps="swscale"
3257 scale_qsv_filter_deps="libmfx"
3258 select_filter_select="pixelutils"
3259 showcqt_filter_deps="avcodec avformat swscale"
3260 showcqt_filter_suggest="libfontconfig libfreetype"
3261 showcqt_filter_select="fft"
3262 showfreqs_filter_deps="avcodec"
3263 showfreqs_filter_select="fft"
3264 showspectrum_filter_deps="avcodec"
3265 showspectrum_filter_select="fft"
3266 showspectrumpic_filter_deps="avcodec"
3267 showspectrumpic_filter_select="fft"
3268 signature_filter_deps="gpl avcodec avformat"
3269 smartblur_filter_deps="gpl swscale"
3270 sofalizer_filter_deps="libmysofa avcodec"
3271 sofalizer_filter_select="fft"
3272 spectrumsynth_filter_deps="avcodec"
3273 spectrumsynth_filter_select="fft"
3274 spp_filter_deps="gpl avcodec"
3275 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3276 stereo3d_filter_deps="gpl"
3277 subtitles_filter_deps="avformat avcodec libass"
3278 super2xsai_filter_deps="gpl"
3279 pixfmts_super2xsai_test_deps="super2xsai_filter"
3280 tinterlace_filter_deps="gpl"
3281 tinterlace_merge_test_deps="tinterlace_filter"
3282 tinterlace_pad_test_deps="tinterlace_filter"
3283 tonemap_filter_deps="const_nan"
3284 unsharp_opencl_filter_deps="opencl"
3285 uspp_filter_deps="gpl avcodec"
3286 vaguedenoiser_filter_deps="gpl"
3287 vidstabdetect_filter_deps="libvidstab"
3288 vidstabtransform_filter_deps="libvidstab"
3289 libvmaf_filter_deps="libvmaf"
3290 zmq_filter_deps="libzmq"
3291 zoompan_filter_deps="swscale"
3292 zscale_filter_deps="libzimg const_nan"
3293 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3294 vpp_qsv_filter_deps="libmfx"
3295 vpp_qsv_filter_select="qsvvpp"
3296
3297 # examples
3298 avio_dir_cmd_deps="avformat avutil"
3299 avio_reading_deps="avformat avcodec avutil"
3300 decode_audio_example_deps="avcodec avutil"
3301 decode_video_example_deps="avcodec avutil"
3302 demuxing_decoding_example_deps="avcodec avformat avutil"
3303 encode_audio_example_deps="avcodec avutil"
3304 encode_video_example_deps="avcodec avutil"
3305 extract_mvs_example_deps="avcodec avformat avutil"
3306 filter_audio_example_deps="avfilter avutil"
3307 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3308 filtering_video_example_deps="avfilter avcodec avformat avutil"
3309 http_multiclient_example_deps="avformat avutil fork"
3310 hw_decode_example_deps="avcodec avformat avutil"
3311 metadata_example_deps="avformat avutil"
3312 muxing_example_deps="avcodec avformat avutil swscale"
3313 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3314 remuxing_example_deps="avcodec avformat avutil"
3315 resampling_audio_example_deps="avutil swresample"
3316 scaling_video_example_deps="avutil swscale"
3317 transcode_aac_example_deps="avcodec avformat swresample"
3318 transcoding_example_deps="avfilter avcodec avformat avutil"
3319 vaapi_encode_example_deps="avcodec avutil"
3320
3321 # EXTRALIBS_LIST
3322 cpu_init_extralibs="pthreads_extralibs"
3323 cws2fws_extralibs="zlib_extralibs"
3324
3325 # libraries, in linking order
3326 avcodec_deps="avutil"
3327 avcodec_suggest="libm"
3328 avcodec_select="null_bsf"
3329 avdevice_deps="avformat avcodec avutil"
3330 avdevice_suggest="libm"
3331 avfilter_deps="avutil"
3332 avfilter_suggest="libm"
3333 avformat_deps="avcodec avutil"
3334 avformat_suggest="libm network zlib"
3335 avresample_deps="avutil"
3336 avresample_suggest="libm"
3337 avutil_suggest="clock_gettime cuda libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3338 postproc_deps="avutil gpl"
3339 postproc_suggest="libm"
3340 swresample_deps="avutil"
3341 swresample_suggest="libm libsoxr"
3342 swscale_deps="avutil"
3343 swscale_suggest="libm"
3344
3345 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3346 avfilter_extralibs="pthreads_extralibs"
3347 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3348
3349 # programs
3350 ffmpeg_deps="avcodec avfilter avformat swresample"
3351 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3352                null_filter
3353                trim_filter"
3354 ffmpeg_suggest="ole32 psapi shell32"
3355 ffplay_deps="avcodec avformat swscale swresample sdl2"
3356 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3357 ffplay_suggest="shell32"
3358 ffprobe_deps="avcodec avformat"
3359 ffprobe_suggest="shell32"
3360 ffserver_deps="avformat fork sarestart"
3361 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3362
3363 # documentation
3364 podpages_deps="perl"
3365 manpages_deps="perl pod2man"
3366 htmlpages_deps="perl"
3367 htmlpages_deps_any="makeinfo_html texi2html"
3368 txtpages_deps="perl makeinfo"
3369 doc_deps_any="manpages htmlpages podpages txtpages"
3370
3371 # default parameters
3372
3373 logfile="ffbuild/config.log"
3374
3375 # installation paths
3376 prefix_default="/usr/local"
3377 bindir_default='${prefix}/bin'
3378 datadir_default='${prefix}/share/ffmpeg'
3379 docdir_default='${prefix}/share/doc/ffmpeg'
3380 incdir_default='${prefix}/include'
3381 libdir_default='${prefix}/lib'
3382 mandir_default='${prefix}/share/man'
3383
3384 # toolchain
3385 ar_default="ar"
3386 cc_default="gcc"
3387 cxx_default="g++"
3388 host_cc_default="gcc"
3389 doxygen_default="doxygen"
3390 install="install"
3391 ln_s_default="ln -s -f"
3392 nm_default="nm -g"
3393 pkg_config_default=pkg-config
3394 ranlib_default="ranlib"
3395 strip_default="strip"
3396 version_script='--version-script'
3397 objformat="elf32"
3398 x86asmexe_default="nasm"
3399 windres_default="windres"
3400 nvcc_default="nvcc"
3401 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3402 striptype="direct"
3403
3404 # OS
3405 target_os_default=$(tolower $(uname -s))
3406 host_os=$target_os_default
3407
3408 # machine
3409 if test "$target_os_default" = aix; then
3410     arch_default=$(uname -p)
3411     strip_default="strip -X32_64"
3412 else
3413     arch_default=$(uname -m)
3414 fi
3415 cpu="generic"
3416 intrinsics="none"
3417
3418 # configurable options
3419 enable $PROGRAM_LIST
3420 enable $DOCUMENT_LIST
3421 enable $EXAMPLE_LIST
3422 enable $(filter_out avresample $LIBRARY_LIST)
3423 enable stripping
3424
3425 enable asm
3426 enable debug
3427 enable doc
3428 enable faan faandct faanidct
3429 enable optimizations
3430 enable runtime_cpudetect
3431 enable safe_bitstream_reader
3432 enable static
3433 enable swscale_alpha
3434 enable valgrind_backtrace
3435
3436 sws_max_filter_size_default=256
3437 set_default sws_max_filter_size
3438
3439 # internal components are enabled by default
3440 enable $EXTRALIBS_LIST
3441
3442 # Avoid external, non-system, libraries getting enabled by dependency resolution
3443 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3444
3445 # build settings
3446 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3447 LIBPREF="lib"
3448 LIBSUF=".a"
3449 FULLNAME='$(NAME)$(BUILDSUF)'
3450 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3451 SLIBPREF="lib"
3452 SLIBSUF=".so"
3453 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3454 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3455 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3456 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3457 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3458 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3459 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3460
3461 asflags_filter=echo
3462 cflags_filter=echo
3463 ldflags_filter=echo
3464
3465 AS_C='-c'
3466 AS_O='-o $@'
3467 CC_C='-c'
3468 CC_E='-E -o $@'
3469 CC_O='-o $@'
3470 CXX_C='-c'
3471 CXX_O='-o $@'
3472 OBJCC_C='-c'
3473 OBJCC_E='-E -o $@'
3474 OBJCC_O='-o $@'
3475 X86ASM_O='-o $@'
3476 LD_O='-o $@'
3477 LD_LIB='-l%'
3478 LD_PATH='-L'
3479 HOSTCC_C='-c'
3480 HOSTCC_E='-E -o $@'
3481 HOSTCC_O='-o $@'
3482 HOSTLD_O='-o $@'
3483 NVCC_C='-c'
3484 NVCC_O='-o $@'
3485
3486 host_extralibs='-lm'
3487 host_cflags_filter=echo
3488 host_ldflags_filter=echo
3489
3490 target_path='$(CURDIR)'
3491
3492 # since the object filename is not given with the -MM flag, the compiler
3493 # is only able to print the basename, and we must add the path ourselves
3494 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3495 DEPFLAGS='-MM'
3496
3497 mkdir -p ffbuild
3498
3499 # find source path
3500 if test -f configure; then
3501     source_path=.
3502 else
3503     source_path=$(cd $(dirname "$0"); pwd)
3504     case "$source_path" in
3505         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3506     esac
3507     test -e "$source_path/config.h" &&
3508         die "Out of tree builds are impossible with config.h in source dir."
3509 fi
3510
3511 for v in "$@"; do
3512     r=${v#*=}
3513     l=${v%"$r"}
3514     r=$(sh_quote "$r")
3515     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3516 done
3517
3518 find_things(){
3519     thing=$1
3520     pattern=$2
3521     file=$source_path/$3
3522     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3523 }
3524
3525 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3526 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3527 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3528 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3529 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3530 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3531 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3532 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3533
3534 find_things_extern(){
3535     thing=$1
3536     pattern=$2
3537     file=$source_path/$3
3538     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3539 }
3540
3541 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3542 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3543 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3544
3545 AVCODEC_COMPONENTS_LIST="
3546     $BSF_LIST
3547     $DECODER_LIST
3548     $ENCODER_LIST
3549     $HWACCEL_LIST
3550     $PARSER_LIST
3551 "
3552
3553 AVDEVICE_COMPONENTS_LIST="
3554     $INDEV_LIST
3555     $OUTDEV_LIST
3556 "
3557
3558 AVFILTER_COMPONENTS_LIST="
3559     $FILTER_LIST
3560 "
3561
3562 AVFORMAT_COMPONENTS_LIST="
3563     $DEMUXER_LIST
3564     $MUXER_LIST
3565     $PROTOCOL_LIST
3566 "
3567
3568 ALL_COMPONENTS="
3569     $AVCODEC_COMPONENTS_LIST
3570     $AVDEVICE_COMPONENTS_LIST
3571     $AVFILTER_COMPONENTS_LIST
3572     $AVFORMAT_COMPONENTS_LIST
3573 "
3574
3575 for n in $COMPONENT_LIST; do
3576     v=$(toupper ${n%s})_LIST
3577     eval enable \$$v
3578     eval ${n}_if_any="\$$v"
3579 done
3580
3581 enable $ARCH_EXT_LIST
3582
3583 die_unknown(){
3584     echo "Unknown option \"$1\"."
3585     echo "See $0 --help for available options."
3586     exit 1
3587 }
3588
3589 print_in_columns() {
3590     cols=$(expr $ncols / 24)
3591     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3592 }
3593
3594 show_list() {
3595     suffix=_$1
3596     shift
3597     echo $* | sed s/$suffix//g | print_in_columns
3598     exit 0
3599 }
3600
3601 rand_list(){
3602     IFS=', '
3603     set -- $*
3604     unset IFS
3605     for thing; do
3606         comp=${thing%:*}
3607         prob=${thing#$comp}
3608         prob=${prob#:}
3609         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3610         echo "prob ${prob:-0.5}"
3611         printf '%s\n' $comp
3612     done
3613 }
3614
3615 do_random(){
3616     action=$1
3617     shift
3618     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3619     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3620 }
3621
3622 for opt do
3623     optval="${opt#*=}"
3624     case "$opt" in
3625         --extra-ldflags=*)
3626             add_ldflags $optval
3627         ;;
3628         --extra-ldexeflags=*)
3629             add_ldexeflags $optval
3630         ;;
3631         --extra-ldsoflags=*)
3632             add_ldsoflags $optval
3633         ;;
3634         --extra-ldlibflags=*)
3635             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3636                  "removed in the future. Use --extra-ldsoflags instead."
3637             add_ldsoflags $optval
3638         ;;
3639         --extra-libs=*)
3640             add_extralibs $optval
3641         ;;
3642         --disable-devices)
3643             disable $INDEV_LIST $OUTDEV_LIST
3644         ;;
3645         --enable-debug=*)
3646             debuglevel="$optval"
3647         ;;
3648         --disable-programs)
3649             disable $PROGRAM_LIST
3650         ;;
3651         --disable-everything)
3652             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3653         ;;
3654         --disable-all)
3655             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3656             disable $LIBRARY_LIST $PROGRAM_LIST doc
3657             enable avutil
3658         ;;
3659         --enable-random|--disable-random)
3660             action=${opt%%-random}
3661             do_random ${action#--} $COMPONENT_LIST
3662         ;;
3663         --enable-random=*|--disable-random=*)
3664             action=${opt%%-random=*}
3665             do_random ${action#--} $optval
3666         ;;
3667         --enable-sdl)
3668             enable sdl2
3669         ;;
3670         --enable-*=*|--disable-*=*)
3671             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3672             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3673             eval list=\$$(toupper $thing)_LIST
3674             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3675             list=$(filter "$name" $list)
3676             [ "$list" = "" ] && warn "Option $opt did not match anything"
3677             $action $list
3678         ;;
3679         --enable-yasm|--disable-yasm)
3680             warn "The ${opt} option is only provided for compatibility and will be\n"\
3681                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3682             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3683         ;;
3684         --yasmexe=*)
3685             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3686                  "removed in the future. Use --x86asmexe instead."
3687             x86asmexe="$optval"
3688         ;;
3689         --enable-?*|--disable-?*)
3690             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3691             if is_in $option $COMPONENT_LIST; then
3692                 test $action = disable && action=unset
3693                 eval $action \$$(toupper ${option%s})_LIST
3694             elif is_in $option $CMDLINE_SELECT; then
3695                 $action $option
3696             else
3697                 die_unknown $opt
3698             fi
3699         ;;
3700         --list-*)
3701             NAME="${opt#--list-}"
3702             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3703             NAME=${NAME%s}
3704             eval show_list $NAME \$$(toupper $NAME)_LIST
3705         ;;
3706         --help|-h) show_help
3707         ;;
3708         --quiet|-q) quiet=yes
3709         ;;
3710         --fatal-warnings) enable fatal_warnings
3711         ;;
3712         --libfuzzer=*)
3713             libfuzzer_path="$optval"
3714         ;;
3715         *)
3716             optname="${opt%%=*}"
3717             optname="${optname#--}"
3718             optname=$(echo "$optname" | sed 's/-/_/g')
3719             if is_in $optname $CMDLINE_SET; then
3720                 eval $optname='$optval'
3721             elif is_in $optname $CMDLINE_APPEND; then
3722                 append $optname "$optval"
3723             else
3724                 die_unknown $opt
3725             fi
3726         ;;
3727     esac
3728 done
3729
3730 for e in $env; do
3731     eval "export $e"
3732 done
3733
3734 if disabled autodetect; then
3735
3736     # Unless iconv is explicitely disabled by the user, we still want to probe
3737     # for the iconv from the libc.
3738     disabled iconv || enable libc_iconv
3739
3740     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3741     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3742 fi
3743 # Mark specifically enabled, but normally autodetected libraries as requested.
3744 for lib in $AUTODETECT_LIBS; do
3745     enabled $lib && request $lib
3746 done
3747 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3748 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3749 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3750
3751 disabled logging && logfile=/dev/null
3752
3753 # command line configuration sanity checks
3754
3755 # we need to build at least one lib type
3756 if ! enabled_any static shared; then
3757     cat <<EOF
3758 At least one library type must be built.
3759 Specify --enable-static to build the static libraries or --enable-shared to
3760 build the shared libraries as well. To only build the shared libraries specify
3761 --disable-static in addition to --enable-shared.
3762 EOF
3763     exit 1
3764 fi
3765
3766 die_license_disabled() {
3767     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3768 }
3769
3770 die_license_disabled_gpl() {
3771     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3772 }
3773
3774 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3775 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3776
3777 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3778 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3779
3780 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3781
3782 enabled_all gnutls openssl &&
3783     die "GnuTLS and OpenSSL must not be enabled at the same time."
3784
3785 # Disable all the library-specific components if the library itself
3786 # is disabled, see AVCODEC_LIST and following _LIST variables.
3787
3788 disable_components(){
3789     disabled ${1} && disable $(
3790         eval components="\$$(toupper ${1})_COMPONENTS"
3791         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3792     )
3793 }
3794
3795 map 'disable_components $v' $LIBRARY_LIST
3796
3797 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3798 set >> $logfile
3799
3800 test -n "$valgrind" && toolchain="valgrind-memcheck"
3801
3802 enabled ossfuzz && {
3803     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3804     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3805 }
3806
3807 case "$toolchain" in
3808     *-asan)
3809         cc_default="${toolchain%-asan}"
3810         add_cflags  -fsanitize=address
3811         add_ldflags -fsanitize=address
3812     ;;
3813     *-msan)
3814         cc_default="${toolchain%-msan}"
3815         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3816         add_ldflags -fsanitize=memory
3817     ;;
3818     *-tsan)
3819         cc_default="${toolchain%-tsan}"
3820         add_cflags  -fsanitize=thread -fPIE
3821         add_ldflags -fsanitize=thread -pie
3822         case "$toolchain" in
3823             gcc-tsan)
3824                 add_cflags  -fPIC
3825                 add_ldflags -fPIC
3826                 ;;
3827         esac
3828     ;;
3829     *-usan)
3830         cc_default="${toolchain%-usan}"
3831         add_cflags  -fsanitize=undefined
3832         add_ldflags -fsanitize=undefined
3833     ;;
3834     valgrind-*)
3835         target_exec_default="valgrind"
3836         case "$toolchain" in
3837             valgrind-massif)
3838                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3839                 ;;
3840             valgrind-memcheck)
3841                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3842                 ;;
3843         esac
3844     ;;
3845     msvc)
3846         # Check whether the current MSVC version needs the C99 converter.
3847         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3848         # support enough of C99 to build ffmpeg. Default to the new
3849         # behaviour if the regexp was unable to match anything, since this
3850         # successfully parses the version number of existing supported
3851         # versions that require the converter (MSVC 2010 and 2012).
3852         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3853         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3854             cc_default="cl"
3855             cxx_default="cl"
3856         else
3857             cc_default="c99wrap cl"
3858             cxx_default="c99wrap cl"
3859         fi
3860         ld_default="$source_path/compat/windows/mslink"
3861         nm_default="dumpbin -symbols"
3862         ar_default="lib"
3863         case "$arch" in
3864         aarch64|arm64)
3865             as_default="armasm64"
3866             ;;
3867         arm*)
3868             as_default="armasm"
3869             ;;
3870         esac
3871         target_os_default="win32"
3872         # Use a relative path for TMPDIR. This makes sure all the
3873         # ffconf temp files are written with a relative path, avoiding
3874         # issues with msys/win32 path conversion for MSVC parameters
3875         # such as -Fo<file> or -out:<file>.
3876         TMPDIR=.
3877     ;;
3878     icl)
3879         cc_default="icl"
3880         ld_default="xilink"
3881         nm_default="dumpbin -symbols"
3882         ar_default="xilib"
3883         target_os_default="win32"
3884         TMPDIR=.
3885     ;;
3886     gcov)
3887         add_cflags  -fprofile-arcs -ftest-coverage
3888         add_ldflags -fprofile-arcs -ftest-coverage
3889     ;;
3890     llvm-cov)
3891         add_cflags -fprofile-arcs -ftest-coverage
3892         add_ldflags --coverage
3893     ;;
3894     hardened)
3895         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3896         add_cflags   -fno-strict-overflow -fstack-protector-all
3897         add_ldflags  -Wl,-z,relro -Wl,-z,now
3898         add_cflags   -fPIE
3899         add_ldexeflags -fPIE -pie
3900     ;;
3901     ?*)
3902         die "Unknown toolchain $toolchain"
3903     ;;
3904 esac
3905
3906 if test -n "$cross_prefix"; then
3907     test -n "$arch" && test -n "$target_os" ||
3908         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3909     enable cross_compile
3910 fi
3911
3912 ar_default="${cross_prefix}${ar_default}"
3913 cc_default="${cross_prefix}${cc_default}"
3914 cxx_default="${cross_prefix}${cxx_default}"
3915 nm_default="${cross_prefix}${nm_default}"
3916 pkg_config_default="${cross_prefix}${pkg_config_default}"
3917 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3918     ranlib_default="${cross_prefix}${ranlib_default} -D"
3919 else
3920     ranlib_default="${cross_prefix}${ranlib_default}"
3921 fi
3922 strip_default="${cross_prefix}${strip_default}"
3923 windres_default="${cross_prefix}${windres_default}"
3924
3925 sysinclude_default="${sysroot}/usr/include"
3926
3927 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3928     target_exec target_os x86asmexe nvcc
3929 enabled cross_compile || host_cc_default=$cc
3930 set_default host_cc
3931
3932 pkg_config_fail_message=""
3933 if ! $pkg_config --version >/dev/null 2>&1; then
3934     warn "$pkg_config not found, library detection may fail."
3935     pkg_config=false
3936 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3937     pkg_config_fail_message="
3938 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3939 fi
3940
3941 if test $doxygen != $doxygen_default && \
3942   ! $doxygen --version >/dev/null 2>&1; then
3943     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3944 fi
3945
3946 exesuf() {
3947     case $1 in
3948         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3949     esac
3950 }
3951
3952 EXESUF=$(exesuf $target_os)
3953 HOSTEXESUF=$(exesuf $host_os)
3954
3955 # set temporary file name
3956 : ${TMPDIR:=$TEMPDIR}
3957 : ${TMPDIR:=$TMP}
3958 : ${TMPDIR:=/tmp}
3959
3960 if [ -n "$tempprefix" ] ; then
3961     mktemp(){
3962         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3963         echo "$tmpname"
3964         mkdir "$tmpname"
3965     }
3966 elif ! check_cmd mktemp -u XXXXXX; then
3967     # simple replacement for missing mktemp
3968     # NOT SAFE FOR GENERAL USE
3969     mktemp(){
3970         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3971         echo "$tmpname"
3972         mkdir "$tmpname"
3973     }
3974 fi
3975
3976 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3977     die "Unable to create temporary directory in $TMPDIR."
3978
3979 tmpfile(){
3980     tmp="${FFTMPDIR}/test"$2
3981     (set -C; exec > $tmp) 2> /dev/null ||
3982         die "Unable to create temporary file in $FFTMPDIR."
3983     eval $1=$tmp
3984 }
3985
3986 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3987 trap 'exit 2' INT
3988
3989 tmpfile TMPASM .asm
3990 tmpfile TMPC   .c
3991 tmpfile TMPCPP .cpp
3992 tmpfile TMPE   $EXESUF
3993 tmpfile TMPH   .h
3994 tmpfile TMPM   .m
3995 tmpfile TMPO   .o
3996 tmpfile TMPS   .S
3997 tmpfile TMPSH  .sh
3998 tmpfile TMPV   .ver
3999
4000 unset -f mktemp
4001
4002 chmod +x $TMPE
4003
4004 # make sure we can execute files in $TMPDIR
4005 cat > $TMPSH 2>> $logfile <<EOF
4006 #! /bin/sh
4007 EOF
4008 chmod +x $TMPSH >> $logfile 2>&1
4009 if ! $TMPSH >> $logfile 2>&1; then
4010     cat <<EOF
4011 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4012 variable to another directory and make sure that it is not mounted noexec.
4013 EOF
4014     die "Sanity test failed."
4015 fi
4016
4017 armasm_flags(){
4018     for flag; do
4019         case $flag in
4020             # Filter out MSVC cl.exe options from cflags that shouldn't
4021             # be passed to gas-preprocessor
4022             -M[TD]*)                                            ;;
4023             *)                  echo $flag                      ;;
4024         esac
4025    done
4026 }
4027
4028 cparser_flags(){
4029     for flag; do
4030         case $flag in
4031             -Wno-switch)             echo -Wno-switch-enum ;;
4032             -Wno-format-zero-length) ;;
4033             -Wdisabled-optimization) ;;
4034             -Wno-pointer-sign)       echo -Wno-other ;;
4035             *)                       echo $flag ;;
4036         esac
4037     done
4038 }
4039
4040 msvc_common_flags(){
4041     for flag; do
4042         case $flag in
4043             # In addition to specifying certain flags under the compiler
4044             # specific filters, they must be specified here as well or else the
4045             # generic catch all at the bottom will print the original flag.
4046             -Wall)                ;;
4047             -Wextra)              ;;
4048             -std=c99)             ;;
4049             # Common flags
4050             -fomit-frame-pointer) ;;
4051             -g)                   echo -Z7 ;;
4052             -fno-math-errno)      ;;
4053             -fno-common)          ;;
4054             -fno-signed-zeros)    ;;
4055             -fPIC)                ;;
4056             -mthumb)              ;;
4057             -march=*)             ;;
4058             -lz)                  echo zlib.lib ;;
4059             -lx264)               echo libx264.lib ;;
4060             -lstdc++)             ;;
4061             -l*)                  echo ${flag#-l}.lib ;;
4062             -LARGEADDRESSAWARE)   echo $flag ;;
4063             -L*)                  echo -libpath:${flag#-L} ;;
4064             *)                    echo $flag ;;
4065         esac
4066     done
4067 }
4068
4069 msvc_flags(){
4070     msvc_common_flags "$@"
4071     for flag; do
4072         case $flag in
4073             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4074                                        -wd4554 ;;
4075             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4076                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4077                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4078                                        -wd4307 \
4079                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4080         esac
4081     done
4082 }
4083
4084 icl_flags(){
4085     msvc_common_flags "$@"
4086     for flag; do
4087         case $flag in
4088             # Despite what Intel's documentation says -Wall, which is supported
4089             # on Windows, does enable remarks so disable them here.
4090             -Wall)                echo $flag -Qdiag-disable:remark ;;
4091             -std=c99)             echo -Qstd=c99 ;;
4092             -flto)                echo -ipo ;;
4093         esac
4094     done
4095 }
4096
4097 icc_flags(){
4098     for flag; do
4099         case $flag in
4100             -flto)                echo -ipo ;;
4101             *)                    echo $flag ;;
4102         esac
4103     done
4104 }
4105
4106 suncc_flags(){
4107     for flag; do
4108         case $flag in
4109             -march=*|-mcpu=*)
4110                 case "${flag#*=}" in
4111                     native)                   echo -xtarget=native       ;;
4112                     v9|niagara)               echo -xarch=sparc          ;;
4113                     ultrasparc)               echo -xarch=sparcvis       ;;
4114                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4115                     i586|pentium)             echo -xchip=pentium        ;;
4116                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4117                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4118                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4119                     pentium4*)          echo -xtarget=pentium4           ;;
4120                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4121                     *-sse3)             echo -xarch=sse3                 ;;
4122                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4123                     bonnell)                   echo -xarch=ssse3         ;;
4124                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4125                     westmere)                  echo -xtarget=westmere    ;;
4126                     silvermont)                echo -xarch=sse4_2        ;;
4127                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4128                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4129                                                echo -xarch=avx           ;;
4130                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4131                     btver1)                    echo -xarch=amdsse4a      ;;
4132                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4133                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4134                     k8|opteron|athlon64|athlon-fx)
4135                                                echo -xarch=sse2a         ;;
4136                     athlon*)                   echo -xarch=pentium_proa  ;;
4137                 esac
4138                 ;;
4139             -std=c99)             echo -xc99              ;;
4140             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4141             -fPIC)                echo -KPIC -xcode=pic32 ;;
4142             -W*,*)                echo $flag              ;;
4143             -f*-*|-W*|-mimpure-text)                      ;;
4144             -shared)              echo -G                 ;;
4145             *)                    echo $flag              ;;
4146         esac
4147     done
4148 }
4149
4150 probe_cc(){
4151     pfx=$1
4152     _cc=$2
4153     first=$3
4154
4155     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4156     unset _ld_o _ldflags _ld_lib _ld_path
4157     unset _depflags _DEPCMD _DEPFLAGS
4158     _flags_filter=echo
4159
4160     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4161         true # no-op to avoid reading stdin in following checks
4162     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4163         _type=llvm_gcc
4164         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4165         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4166         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4167         _cflags_speed='-O3'
4168         _cflags_size='-Os'
4169     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4170         _type=gcc
4171         gcc_version=$($_cc --version | head -n1)
4172         gcc_basever=$($_cc -dumpversion)
4173         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4174         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4175         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4176         case $gcc_basever in
4177             2) ;;
4178             2.*) ;;
4179             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4180         esac
4181         if [ "$first" = true ]; then
4182             case $gcc_basever in
4183                 4.2*)
4184                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4185             esac
4186         fi
4187         _cflags_speed='-O3'
4188         _cflags_size='-Os'
4189     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4190         _type=icc
4191         _ident=$($_cc --version | head -n1)
4192         _depflags='-MMD'
4193         _cflags_speed='-O3'
4194         _cflags_size='-Os'
4195         _cflags_noopt='-O1'
4196         _flags_filter=icc_flags
4197     elif $_cc -v 2>&1 | grep -q xlc; then
4198         _type=xlc
4199         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4200         _cflags_speed='-O5'
4201         _cflags_size='-O5 -qcompact'
4202     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4203         test -d "$sysroot" || die "No valid sysroot specified."
4204         _type=armcc
4205         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4206         armcc_conf="$PWD/armcc.conf"
4207         $_cc --arm_linux_configure                 \
4208              --arm_linux_config_file="$armcc_conf" \
4209              --configure_sysroot="$sysroot"        \
4210              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4211              die "Error creating armcc configuration file."
4212         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4213         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4214         as_default="${cross_prefix}gcc"
4215         _depflags='-MMD'
4216         _cflags_speed='-O3'
4217         _cflags_size='-Os'
4218     elif $_cc -v 2>&1 | grep -q clang; then
4219         _type=clang
4220         _ident=$($_cc --version 2>/dev/null | head -n1)
4221         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4222         _cflags_speed='-O3'
4223         _cflags_size='-Oz'
4224     elif $_cc -V 2>&1 | grep -q Sun; then
4225         _type=suncc
4226         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4227         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4228         _DEPFLAGS='-xM1 -xc99'
4229         _ldflags='-std=c99'
4230         _cflags_speed='-O5'
4231         _cflags_size='-O5 -xspace'
4232         _flags_filter=suncc_flags
4233     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4234         _type=pathscale
4235         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4236         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4237         _cflags_speed='-O2'
4238         _cflags_size='-Os'
4239         _flags_filter='filter_out -Wdisabled-optimization'
4240     elif $_cc -v 2>&1 | grep -q Open64; then
4241         _type=open64
4242         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4243         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4244         _cflags_speed='-O2'
4245         _cflags_size='-Os'
4246         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4247     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4248         _type=armasm
4249         _ident=$($_cc | head -n1)
4250         # 4509: "This form of conditional instruction is deprecated"
4251         _flags="-nologo -ignore 4509"
4252         _flags_filter=armasm_flags
4253     elif $_cc 2>&1 | grep -q Intel; then
4254         _type=icl
4255         _ident=$($_cc 2>&1 | head -n1)
4256         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4257         # Not only is O3 broken on 13.x+ but it is slower on all previous
4258         # versions (tested) as well.
4259         _cflags_speed="-O2"
4260         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4261         if $_cc 2>&1 | grep -q Linker; then
4262             _ld_o='-out:$@'
4263         else
4264             _ld_o='-Fe$@'
4265         fi
4266         _cc_o='-Fo$@'
4267         _cc_e='-P'
4268         _flags_filter=icl_flags
4269         _ld_lib='lib%.a'
4270         _ld_path='-libpath:'
4271         # -Qdiag-error to make icl error when seeing certain unknown arguments
4272         _flags='-nologo -Qdiag-error:4044,10157'
4273         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4274         # with MSVC which enables it by default.
4275         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4276         disable stripping
4277     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4278         # lld can emulate multiple different linkers; in ms link.exe mode,
4279         # the -? parameter gives the help output which contains an identifyable
4280         # string, while it gives an error in other modes.
4281         _type=lld-link
4282         # The link.exe mode doesn't have a switch for getting the version,
4283         # but we can force it back to gnu mode and get the version from there.
4284         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4285         _ld_o='-out:$@'
4286         _flags_filter=msvc_flags
4287         _ld_lib='lib%.a'
4288         _ld_path='-libpath:'
4289     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4290         _type=msvc
4291         _ident=$($_cc 2>&1 | head -n1)
4292         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4293         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4294         _cflags_speed="-O2"
4295         _cflags_size="-O1"
4296         _cflags_noopt="-O1"
4297         if $_cc -nologo- 2>&1 | grep -q Linker; then
4298             _ld_o='-out:$@'
4299         else
4300             _ld_o='-Fe$@'
4301         fi
4302         _cc_o='-Fo$@'
4303         _cc_e='-P -Fi$@'
4304         _flags_filter=msvc_flags
4305         _ld_lib='lib%.a'
4306         _ld_path='-libpath:'
4307         _flags='-nologo'
4308         disable stripping
4309     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4310         _type=cparser
4311         _ident=$($_cc --version | head -n1)
4312         _depflags='-MMD'
4313         _cflags_speed='-O4'
4314         _cflags_size='-O2'
4315         _flags_filter=cparser_flags
4316     fi
4317
4318     eval ${pfx}_type=\$_type
4319     eval ${pfx}_ident=\$_ident
4320 }
4321
4322 set_ccvars(){
4323     eval ${1}_C=\${_cc_c-\${${1}_C}}
4324     eval ${1}_E=\${_cc_e-\${${1}_E}}
4325     eval ${1}_O=\${_cc_o-\${${1}_O}}
4326
4327     if [ -n "$_depflags" ]; then
4328         eval ${1}_DEPFLAGS=\$_depflags
4329     else
4330         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4331         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4332         eval DEP${1}FLAGS=\$_flags
4333     fi
4334 }
4335
4336 probe_cc cc "$cc" "true"
4337 cflags_filter=$_flags_filter
4338 cflags_speed=$_cflags_speed
4339 cflags_size=$_cflags_size
4340 cflags_noopt=$_cflags_noopt
4341 add_cflags $_flags $_cflags
4342 cc_ldflags=$_ldflags
4343 set_ccvars CC
4344 set_ccvars CXX
4345
4346 probe_cc hostcc "$host_cc"
4347 host_cflags_filter=$_flags_filter
4348 host_cflags_speed=$_cflags_speed
4349 add_host_cflags  $_flags $_cflags
4350 set_ccvars HOSTCC
4351
4352 test -n "$cc_type" && enable $cc_type ||
4353     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4354
4355 : ${as_default:=$cc}
4356 : ${objcc_default:=$cc}
4357 : ${dep_cc_default:=$cc}
4358 : ${ld_default:=$cc}
4359 : ${host_ld_default:=$host_cc}
4360 set_default ar as objcc dep_cc ld ln_s host_ld windres
4361
4362 probe_cc as "$as"
4363 asflags_filter=$_flags_filter
4364 add_asflags $_flags $_cflags
4365 set_ccvars AS
4366
4367 probe_cc objcc "$objcc"
4368 objcflags_filter=$_flags_filter
4369 add_objcflags $_flags $_cflags
4370 set_ccvars OBJC
4371
4372 probe_cc ld "$ld"
4373 ldflags_filter=$_flags_filter
4374 add_ldflags $_flags $_ldflags
4375 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4376 LD_O=${_ld_o-$LD_O}
4377 LD_LIB=${_ld_lib-$LD_LIB}
4378 LD_PATH=${_ld_path-$LD_PATH}
4379
4380 probe_cc hostld "$host_ld"
4381 host_ldflags_filter=$_flags_filter
4382 add_host_ldflags $_flags $_ldflags
4383 HOSTLD_O=${_ld_o-$HOSTLD_O}
4384
4385 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4386     probe_cc depcc "$dep_cc"
4387     CCDEP=${_DEPCMD:-$DEPCMD}
4388     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4389     DEPCCFLAGS=$_flags
4390 fi
4391
4392 if $ar 2>&1 | grep -q Microsoft; then
4393     arflags="-nologo"
4394     ar_o='-out:$@'
4395 elif $ar 2>&1 | grep -q "\[D\] "; then
4396     arflags="rcD"
4397     ar_o='$@'
4398 else
4399     arflags="rc"
4400     ar_o='$@'
4401 fi
4402
4403 add_cflags $extra_cflags
4404 add_cxxflags $extra_cxxflags
4405 add_objcflags $extra_objcflags
4406 add_asflags $extra_cflags
4407
4408 if test -n "$sysroot"; then
4409     case "$cc_type" in
4410         gcc|llvm_gcc|clang)
4411             add_cppflags --sysroot="$sysroot"
4412             add_ldflags --sysroot="$sysroot"
4413         ;;
4414     esac
4415 fi
4416
4417 if test "$cpu" = host; then
4418     enabled cross_compile &&
4419         die "--cpu=host makes no sense when cross-compiling."
4420
4421     case "$cc_type" in
4422         gcc|llvm_gcc)
4423             check_native(){
4424                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4425                 sed -n "/cc1.*$1=/{
4426                             s/.*$1=\\([^ ]*\\).*/\\1/
4427                             p
4428                             q
4429                         }" $TMPE
4430             }
4431             cpu=$(check_native -march || check_native -mcpu)
4432         ;;
4433         clang)
4434             check_native(){
4435                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4436                 sed -n "/cc1.*-target-cpu /{
4437                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4438                             p
4439                             q
4440                         }" $TMPE
4441             }
4442             cpu=$(check_native -march)
4443         ;;
4444     esac
4445
4446     test "${cpu:-host}" = host &&
4447         die "--cpu=host not supported with compiler $cc"
4448 fi
4449
4450 # Deal with common $arch aliases
4451 case "$arch" in
4452     aarch64|arm64)
4453         arch="aarch64"
4454     ;;
4455     arm*|iPad*|iPhone*)
4456         arch="arm"
4457     ;;
4458     mips*|IP*)
4459         case "$arch" in
4460         *el)
4461             add_cppflags -EL
4462             add_ldflags -EL
4463         ;;
4464         *eb)
4465             add_cppflags -EB
4466             add_ldflags -EB
4467         ;;
4468         esac
4469         arch="mips"
4470     ;;
4471     parisc*|hppa*)
4472         arch="parisc"
4473     ;;
4474     "Power Macintosh"|ppc*|powerpc*)
4475         arch="ppc"
4476     ;;
4477     s390|s390x)
4478         arch="s390"
4479     ;;
4480     sh4|sh)
4481         arch="sh4"
4482     ;;
4483     sun4*|sparc*)
4484         arch="sparc"
4485     ;;
4486     tilegx|tile-gx)
4487         arch="tilegx"
4488     ;;
4489     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4490         arch="x86"
4491     ;;
4492 esac
4493
4494 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4495 enable $arch
4496
4497 # Add processor-specific flags
4498 if enabled aarch64; then
4499
4500     case $cpu in
4501         armv*)
4502             cpuflags="-march=$cpu"
4503         ;;
4504         *)
4505             cpuflags="-mcpu=$cpu"
4506         ;;
4507     esac
4508
4509 elif enabled alpha; then
4510
4511     cpuflags="-mcpu=$cpu"
4512
4513 elif enabled arm; then
4514
4515     check_arm_arch() {
4516         check_cpp_condition stddef.h \
4517             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4518             $cpuflags
4519     }
4520
4521     probe_arm_arch() {
4522         if   check_arm_arch 4;        then echo armv4
4523         elif check_arm_arch 4T;       then echo armv4t
4524         elif check_arm_arch 5;        then echo armv5
4525         elif check_arm_arch 5E;       then echo armv5e
4526         elif check_arm_arch 5T;       then echo armv5t
4527         elif check_arm_arch 5TE;      then echo armv5te
4528         elif check_arm_arch 5TEJ;     then echo armv5te
4529         elif check_arm_arch 6;        then echo armv6
4530         elif check_arm_arch 6J;       then echo armv6j
4531         elif check_arm_arch 6K;       then echo armv6k
4532         elif check_arm_arch 6Z;       then echo armv6z
4533         elif check_arm_arch 6KZ;      then echo armv6zk
4534         elif check_arm_arch 6ZK;      then echo armv6zk
4535         elif check_arm_arch 6T2;      then echo armv6t2
4536         elif check_arm_arch 7;        then echo armv7
4537         elif check_arm_arch 7A  7_A;  then echo armv7-a
4538         elif check_arm_arch 7S;       then echo armv7-a
4539         elif check_arm_arch 7R  7_R;  then echo armv7-r
4540         elif check_arm_arch 7M  7_M;  then echo armv7-m
4541         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4542         elif check_arm_arch 8A  8_A;  then echo armv8-a
4543         fi
4544     }
4545
4546     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4547
4548     case $cpu in
4549         armv*)
4550             cpuflags="-march=$cpu"
4551             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4552         ;;
4553         *)
4554             cpuflags="-mcpu=$cpu"
4555             case $cpu in
4556                 cortex-a*)                               subarch=armv7a  ;;
4557                 cortex-r*)                               subarch=armv7r  ;;
4558                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4559                 arm11*)                                  subarch=armv6   ;;
4560                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4561                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4562                 *)                             subarch=$(probe_arm_arch) ;;
4563             esac
4564         ;;
4565     esac
4566
4567     case "$subarch" in
4568         armv5t*)    enable fast_clz                ;;
4569         armv[6-8]*)
4570             enable fast_clz
4571             disabled fast_unaligned || enable fast_unaligned
4572             ;;
4573     esac
4574
4575 elif enabled avr32; then
4576
4577     case $cpu in
4578         ap7[02]0[0-2])
4579             subarch="avr32_ap"
4580             cpuflags="-mpart=$cpu"
4581         ;;
4582         ap)
4583             subarch="avr32_ap"
4584             cpuflags="-march=$cpu"
4585         ;;
4586         uc3[ab]*)
4587             subarch="avr32_uc"
4588             cpuflags="-mcpu=$cpu"
4589         ;;
4590         uc)
4591             subarch="avr32_uc"
4592             cpuflags="-march=$cpu"
4593         ;;
4594     esac
4595
4596 elif enabled bfin; then
4597
4598     cpuflags="-mcpu=$cpu"
4599
4600 elif enabled mips; then
4601
4602     cpuflags="-march=$cpu"
4603
4604     if [ "$cpu" != "generic" ]; then
4605         disable mips32r2
4606         disable mips32r5
4607         disable mips64r2
4608         disable mips32r6
4609         disable mips64r6
4610         disable loongson2
4611         disable loongson3
4612
4613         case $cpu in
4614             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4615                 enable mips32r2
4616                 disable msa
4617             ;;
4618             p5600|i6400|p6600)
4619                 disable mipsdsp
4620                 disable mipsdspr2
4621             ;;
4622             loongson*)
4623                 enable loongson2
4624                 enable loongson3
4625                 enable local_aligned
4626                 enable simd_align_16
4627                 enable fast_64bit
4628                 enable fast_clz
4629                 enable fast_cmov
4630                 enable fast_unaligned
4631                 disable aligned_stack
4632                 disable mipsfpu
4633                 disable mipsdsp
4634                 disable mipsdspr2
4635                 case $cpu in
4636                     loongson3*)
4637                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4638                     ;;
4639                     loongson2e)
4640                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4641                     ;;
4642                     loongson2f)
4643                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4644                     ;;
4645                 esac
4646             ;;
4647             *)
4648                 # Unknown CPU. Disable everything.
4649                 warn "unknown CPU. Disabling all MIPS optimizations."
4650                 disable mipsfpu
4651                 disable mipsdsp
4652                 disable mipsdspr2
4653                 disable msa
4654                 disable mmi
4655             ;;
4656         esac
4657
4658         case $cpu in
4659             24kc)
4660                 disable mipsfpu
4661                 disable mipsdsp
4662                 disable mipsdspr2
4663             ;;
4664             24kf*)
4665                 disable mipsdsp
4666                 disable mipsdspr2
4667             ;;
4668             24kec|34kc|1004kc)
4669                 disable mipsfpu
4670                 disable mipsdspr2
4671             ;;
4672             24kef*|34kf*|1004kf*)
4673                 disable mipsdspr2
4674             ;;
4675             74kc)
4676                 disable mipsfpu
4677             ;;
4678             p5600)
4679                 enable mips32r5
4680                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4681             ;;
4682             i6400)
4683                 enable mips64r6
4684                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4685             ;;
4686             p6600)
4687                 enable mips64r6
4688                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4689             ;;
4690         esac
4691     else
4692         # We do not disable anything. Is up to the user to disable the unwanted features.
4693         warn 'generic cpu selected'
4694     fi
4695
4696 elif enabled ppc; then
4697
4698     disable ldbrx
4699
4700     case $(tolower $cpu) in
4701         601|ppc601|powerpc601)
4702             cpuflags="-mcpu=601"
4703             disable altivec
4704         ;;
4705         603*|ppc603*|powerpc603*)
4706             cpuflags="-mcpu=603"
4707             disable altivec
4708         ;;
4709         604*|ppc604*|powerpc604*)
4710             cpuflags="-mcpu=604"
4711             disable altivec
4712         ;;
4713         g3|75*|ppc75*|powerpc75*)
4714             cpuflags="-mcpu=750"
4715             disable altivec
4716         ;;
4717         g4|745*|ppc745*|powerpc745*)
4718             cpuflags="-mcpu=7450"
4719             disable vsx
4720         ;;
4721         74*|ppc74*|powerpc74*)
4722             cpuflags="-mcpu=7400"
4723             disable vsx
4724         ;;
4725         g5|970|ppc970|powerpc970)
4726             cpuflags="-mcpu=970"
4727             disable vsx
4728         ;;
4729         power[3-6]*)
4730             cpuflags="-mcpu=$cpu"
4731             disable vsx
4732         ;;
4733         power[7-8]*)
4734             cpuflags="-mcpu=$cpu"
4735         ;;
4736         cell)
4737             cpuflags="-mcpu=cell"
4738             enable ldbrx
4739             disable vsx
4740         ;;
4741         e500mc)
4742             cpuflags="-mcpu=e500mc"
4743             disable altivec
4744         ;;
4745         e500v2)
4746             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4747             disable altivec
4748             disable dcbzl
4749         ;;
4750         e500)
4751             cpuflags="-mcpu=8540 -mhard-float"
4752             disable altivec
4753             disable dcbzl
4754         ;;
4755     esac
4756
4757 elif enabled sparc; then
4758
4759     case $cpu in
4760         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4761             cpuflags="-mcpu=$cpu"
4762         ;;
4763         ultrasparc*|niagara[234])
4764             cpuflags="-mcpu=$cpu"
4765         ;;
4766     esac
4767
4768 elif enabled x86; then
4769
4770     case $cpu in
4771         i[345]86|pentium)
4772             cpuflags="-march=$cpu"
4773             disable i686
4774             disable mmx
4775         ;;
4776         # targets that do NOT support nopl and conditional mov (cmov)
4777         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4778             cpuflags="-march=$cpu"
4779             disable i686
4780         ;;
4781         # targets that do support nopl and conditional mov (cmov)
4782         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4783         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4784         |amdfam10|barcelona|b[dt]ver*|znver*)
4785             cpuflags="-march=$cpu"
4786             enable i686
4787             enable fast_cmov
4788         ;;
4789         # targets that do support conditional mov but on which it's slow
4790         pentium4|pentium4m|prescott|nocona)
4791             cpuflags="-march=$cpu"
4792             enable i686
4793             disable fast_cmov
4794         ;;
4795     esac
4796
4797 fi
4798
4799 if [ "$cpu" != generic ]; then
4800     add_cflags  $cpuflags
4801     add_asflags $cpuflags
4802     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4803 fi
4804
4805 # compiler sanity check
4806 check_exec <<EOF
4807 int main(void){ return 0; }
4808 EOF
4809 if test "$?" != 0; then
4810     echo "$cc is unable to create an executable file."
4811     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4812         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4813         echo "Only do this if you know what cross compiling means."
4814     fi
4815     die "C compiler test failed."
4816 fi
4817
4818 add_cppflags -D_ISOC99_SOURCE
4819 add_cxxflags -D__STDC_CONSTANT_MACROS
4820 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4821
4822 # some compilers silently accept -std=c11, so we also need to check that the
4823 # version macro is defined properly
4824 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4825     add_cflags -std=c11 ||
4826     check_cflags -std=c99
4827
4828 check_cppflags -D_FILE_OFFSET_BITS=64
4829 check_cppflags -D_LARGEFILE_SOURCE
4830
4831 add_host_cppflags -D_ISOC99_SOURCE
4832 check_host_cflags -std=c99
4833 check_host_cflags -Wall
4834 check_host_cflags $host_cflags_speed
4835
4836 check_64bit(){
4837     arch32=$1
4838     arch64=$2
4839     expr=$3
4840     check_code cc "" "int test[2*($expr) - 1]" &&
4841         subarch=$arch64 || subarch=$arch32
4842     enable $subarch
4843 }
4844
4845 case "$arch" in
4846     aarch64|alpha|ia64)
4847         enabled shared && enable_weak pic
4848     ;;
4849     mips)
4850         check_64bit mips mips64 '_MIPS_SIM > 1'
4851         enabled shared && enable_weak pic
4852     ;;
4853     parisc)
4854         check_64bit parisc parisc64 'sizeof(void *) > 4'
4855         enabled shared && enable_weak pic
4856     ;;
4857     ppc)
4858         check_64bit ppc ppc64 'sizeof(void *) > 4'
4859         enabled shared && enable_weak pic
4860     ;;
4861     s390)
4862         check_64bit s390 s390x 'sizeof(void *) > 4'
4863         enabled shared && enable_weak pic
4864     ;;
4865     sparc)
4866         check_64bit sparc sparc64 'sizeof(void *) > 4'
4867         enabled shared && enable_weak pic
4868     ;;
4869     x86)
4870         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4871         # Treat x32 as x64 for now. Note it also needs pic if shared
4872         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4873             subarch=x86_64 && enable x86_64 && disable x86_32
4874         if enabled x86_64; then
4875             enabled shared && enable_weak pic
4876             objformat=elf64
4877         fi
4878     ;;
4879 esac
4880
4881 # OS specific
4882 case $target_os in
4883     aix)
4884         SHFLAGS=-shared
4885         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4886         enabled shared && add_ldflags -Wl,-brtl
4887         arflags='-Xany -r -c'
4888         ;;
4889     android)
4890         disable symver
4891         enable section_data_rel_ro
4892         SLIB_INSTALL_NAME='$(SLIBNAME)'
4893         SLIB_INSTALL_LINKS=
4894         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4895         ;;
4896     haiku)
4897         prefix_default="/boot/common"
4898         network_extralibs="-lnetwork"
4899         host_extralibs=
4900         ;;
4901     sunos)
4902         SHFLAGS='-shared -Wl,-h,$$(@F)'
4903         enabled x86 && append SHFLAGS -mimpure-text
4904         network_extralibs="-lsocket -lnsl"
4905         add_cppflags -D__EXTENSIONS__
4906         # When using suncc to build, the Solaris linker will mark
4907         # an executable with each instruction set encountered by
4908         # the Solaris assembler.  As our libraries contain their own
4909         # guards for processor-specific code, instead suppress
4910         # generation of the HWCAPS ELF section on Solaris x86 only.
4911         enabled_all suncc x86 &&
4912             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4913             add_ldflags -Wl,-M,mapfile
4914         nm_default='nm -P -g'
4915         version_script='-M'
4916         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4917         ;;
4918     netbsd)
4919         disable symver
4920         oss_indev_extralibs="-lossaudio"
4921         oss_outdev_extralibs="-lossaudio"
4922         enabled gcc || check_ldflags -Wl,-zmuldefs
4923         ;;
4924     openbsd|bitrig)
4925         disable symver
4926         SHFLAGS='-shared'
4927         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4928         SLIB_INSTALL_LINKS=
4929         oss_indev_extralibs="-lossaudio"
4930         oss_outdev_extralibs="-lossaudio"
4931         ;;
4932     dragonfly)
4933         disable symver
4934         ;;
4935     freebsd)
4936         ;;
4937     bsd/os)
4938         add_extralibs -lpoll -lgnugetopt
4939         strip="strip -d"
4940         ;;
4941     darwin)
4942         enabled ppc && add_asflags -force_cpusubtype_ALL
4943         install_name_dir_default='$(SHLIBDIR)'
4944         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4945         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4946         strip="${strip} -x"
4947         add_ldflags -Wl,-dynamic,-search_paths_first
4948         check_cflags -Werror=partial-availability
4949         SLIBSUF=".dylib"
4950         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4951         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4952         enabled x86_64 && objformat="macho64" || objformat="macho32"
4953         enabled_any pic shared x86_64 ||
4954             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4955         check_header dispatch/dispatch.h &&
4956             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4957         if test -n "$sysroot"; then
4958             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
4959             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
4960         fi
4961         version_script='-exported_symbols_list'
4962         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4963         ;;
4964     msys*)
4965         die "Native MSYS builds are discouraged, please use the MINGW environment."
4966         ;;
4967     mingw32*|mingw64*)
4968         target_os=mingw32
4969         if enabled shared; then
4970             # Cannot build both shared and static libs when using dllimport.
4971             disable static
4972         fi
4973         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4974         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4975         shlibdir_default="$bindir_default"
4976         SLIBPREF=""
4977         SLIBSUF=".dll"
4978         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4979         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4980         SLIB_EXTRA_CMD='cp $(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4981         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4982         SLIB_INSTALL_LINKS=
4983         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4984         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4985         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4986         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
4987         enabled x86_64 && objformat="win64" || objformat="win32"
4988         ranlib=:
4989         enable dos_paths
4990         check_ldflags -Wl,--nxcompat,--dynamicbase
4991         # Lets work around some stupidity in binutils.
4992         # ld will strip relocations from executables even though we need them
4993         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4994         # however ld then forgets what the entry point should be (oops) so we
4995         # have to manually (re)set it.
4996         if enabled x86_32; then
4997             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4998         elif enabled x86_64; then
4999             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5000             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5001             # Set image base >4GB for extra entropy with HEASLR
5002             add_ldexeflags -Wl,--image-base,0x140000000
5003             append SHFLAGS -Wl,--image-base,0x180000000
5004         fi
5005         ;;
5006     win32|win64)
5007         disable symver
5008         if enabled shared; then
5009             # Link to the import library instead of the normal static library
5010             # for shared libs.
5011             LD_LIB='%.lib'
5012             # Cannot build both shared and static libs with MSVC or icl.
5013             disable static
5014         fi
5015         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5016         shlibdir_default="$bindir_default"
5017         SLIBPREF=""
5018         SLIBSUF=".dll"
5019         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5020         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5021         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5022         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5023         SLIB_INSTALL_LINKS=
5024         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5025         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5026         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5027         enabled x86_64 && objformat="win64" || objformat="win32"
5028         ranlib=:
5029         enable dos_paths
5030         ;;
5031     cygwin*)
5032         target_os=cygwin
5033         shlibdir_default="$bindir_default"
5034         SLIBPREF="cyg"
5035         SLIBSUF=".dll"
5036         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5037         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5038         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5039         SLIB_INSTALL_LINKS=
5040         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5041         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5042         enabled x86_64 && objformat="win64" || objformat="win32"
5043         enable dos_paths
5044         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5045         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5046         ;;
5047     *-dos|freedos|opendos)
5048         network_extralibs="-lsocket"
5049         objformat="coff"
5050         enable dos_paths
5051         add_cppflags -U__STRICT_ANSI__
5052         ;;
5053     linux)
5054         enable section_data_rel_ro
5055         enabled_any arm aarch64 && enable_weak linux_perf
5056         ;;
5057     irix*)
5058         target_os=irix
5059         ranlib="echo ignoring ranlib"
5060         ;;
5061     os/2*)
5062         strip="lxlite -CS"
5063         striptype=""
5064         objformat="aout"
5065         add_cppflags -D_GNU_SOURCE
5066         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5067         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5068         LIBSUF="_s.a"
5069         SLIBPREF=""
5070         SLIBSUF=".dll"
5071         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5072         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5073         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5074             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5075             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5076             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5077             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5078         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5079             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5080         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5081         SLIB_INSTALL_LINKS=
5082         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5083         enable dos_paths
5084         enable_weak os2threads
5085         ;;
5086     gnu/kfreebsd)
5087         add_cppflags -D_BSD_SOURCE
5088         ;;
5089     gnu)
5090         ;;
5091     qnx)
5092         add_cppflags -D_QNX_SOURCE
5093         network_extralibs="-lsocket"
5094         ;;
5095     symbian)
5096         SLIBSUF=".dll"
5097         enable dos_paths
5098         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5099         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5100         add_ldflags -Wl,--target1-abs,--no-undefined \
5101                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5102                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5103         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5104                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5105                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5106         ;;
5107     minix)
5108         ;;
5109     none)
5110         ;;
5111     *)
5112         die "Unknown OS '$target_os'."
5113         ;;
5114 esac
5115
5116 # test if creating links works
5117 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5118 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5119 mkdir "$link_dest"
5120 $ln_s "$link_dest" "$link_name"
5121 touch "$link_dest/test_file"
5122 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5123     # create link to source path
5124     [ -e src ] && rm src
5125     $ln_s "$source_path" src
5126     source_link=src
5127 else
5128     # creating directory links doesn't work
5129     # fall back to using the full source path
5130     source_link="$source_path"
5131 fi
5132 # cleanup
5133 rm -r "$link_dest"
5134 rm -r "$link_name"
5135
5136 # determine libc flavour
5137
5138 probe_libc(){
5139     pfx=$1
5140     pfx_no_=${pfx%_}
5141     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5142     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5143         eval ${pfx}libc_type=uclibc
5144         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5145     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5146         eval ${pfx}libc_type=glibc
5147         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5148     # MinGW headers can be installed on Cygwin, so check for newlib first.
5149     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5150         eval ${pfx}libc_type=newlib
5151         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5152     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5153     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5154         eval ${pfx}libc_type=mingw64
5155         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5156             add_compat msvcrt/snprintf.o
5157             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5158         fi
5159         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5160         eval test \$${pfx_no_}cc_type = "gcc" &&
5161             add_${pfx}cppflags -D__printf__=__gnu_printf__
5162     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5163          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5164         eval ${pfx}libc_type=mingw32
5165         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5166             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5167             die "ERROR: MinGW32 runtime version must be >= 3.15."
5168         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5169         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5170             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5171         check_${pfx}cpp_condition windows.h "defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0502" &&
5172             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5173         eval test \$${pfx_no_}cc_type = "gcc" &&
5174             add_${pfx}cppflags -D__printf__=__gnu_printf__
5175     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5176         eval ${pfx}libc_type=msvcrt
5177         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5178             if [ "$pfx" = host_ ]; then
5179                 add_host_cppflags -Dsnprintf=_snprintf
5180             else
5181                 add_compat strtod.o strtod=avpriv_strtod
5182                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5183                                              _snprintf=avpriv_snprintf  \
5184                                              vsnprintf=avpriv_vsnprintf
5185             fi
5186         fi
5187         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5188         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5189         # 0x601 by default unless something else is set by the user.
5190         # This can easily lead to us detecting functions only present
5191         # in such new versions and producing binaries requiring windows 7.0.
5192         # Therefore explicitly set the default to XP unless the user has
5193         # set something else on the command line.
5194         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5195         # family. For these cases, configure is free to use any functions
5196         # found in the SDK headers by default. (Alternatively, we could force
5197         # _WIN32_WINNT to 0x0602 in that case.)
5198         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5199             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5200 #ifdef WINAPI_FAMILY
5201 #include <winapifamily.h>
5202 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5203 #error not desktop
5204 #endif
5205 #endif
5206 EOF
5207         if [ "$pfx" = "" ]; then
5208             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5209             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5210         fi
5211     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5212         eval ${pfx}libc_type=klibc
5213     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5214         eval ${pfx}libc_type=bionic
5215     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5216         eval ${pfx}libc_type=solaris
5217         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5218     fi
5219     check_${pfx}cc <<EOF
5220 #include <time.h>
5221 void *v = localtime_r;
5222 EOF
5223 test "$?" != 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
5224 #include <time.h>
5225 void *v = localtime_r;
5226 EOF
5227
5228     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5229 }
5230
5231 probe_libc
5232 probe_libc host_
5233
5234 # hacks for compiler/libc/os combinations
5235
5236 case $libc_type in
5237     bionic)
5238         add_compat strtod.o strtod=avpriv_strtod
5239         ;;
5240 esac
5241
5242 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5243     add_cppflags '-I\$(SRC_PATH)/compat/float'
5244
5245 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5246
5247 set_default libdir
5248 : ${shlibdir_default:="$libdir"}
5249 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5250
5251 set_default $PATHS_LIST
5252 set_default nm
5253
5254 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5255
5256 enable_weak_pic() {
5257     disabled pic && return
5258     enable pic
5259     add_cppflags -DPIC
5260     case "$target_os" in
5261     mingw*|cygwin*|win*)
5262         ;;
5263     *)
5264         add_cflags -fPIC
5265         add_asflags -fPIC
5266         ;;
5267     esac
5268 }
5269
5270 enabled pic && enable_weak_pic
5271
5272 check_cc <<EOF || die "Symbol mangling check failed."
5273 int ff_extern;
5274 EOF
5275 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5276 extern_prefix=${sym%%ff_extern*}
5277
5278 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5279
5280 _restrict=
5281 for restrict_keyword in restrict __restrict__ __restrict; do
5282     check_cc <<EOF && _restrict=$restrict_keyword && break
5283 void foo(char * $restrict_keyword p);
5284 EOF
5285 done
5286
5287 check_cc <<EOF && enable pragma_deprecated
5288 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5289 EOF
5290
5291 check_cc <<EOF || die "endian test failed"
5292 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5293 EOF
5294 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5295
5296 check_cc <<EOF && enable const_nan
5297 #include <math.h>
5298 void foo(void) { struct { double d; } static const bar[] = { { NAN } }; }
5299 EOF
5300
5301 if ! enabled ppc64 || enabled bigendian; then
5302     disable vsx
5303 fi
5304
5305 check_gas() {
5306     log "check_gas using '$as' as AS"
5307     # :vararg is used on aarch64, arm and ppc altivec
5308     check_as <<EOF || return 1
5309 .macro m n, y:vararg=0
5310 \n: .int \y
5311 .endm
5312 m x
5313 EOF
5314     # .altmacro is only used in arm asm
5315     ! enabled arm || check_as <<EOF || return 1
5316 .altmacro
5317 EOF
5318     enable gnu_as
5319     return 0
5320 }
5321
5322 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5323     nogas=:
5324     enabled_any arm aarch64 && nogas=die
5325     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5326     as_noop=-v
5327
5328     case $as_type in
5329         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5330         gcc)  gaspp_as_type=gas ;;
5331         *)    gaspp_as_type=$as_type ;;
5332     esac
5333
5334     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5335
5336     test "${as#*gas-preprocessor.pl}" != "$as" ||
5337     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5338         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5339
5340     if ! check_gas ; then
5341         as=${gas:=$as}
5342         check_gas || \
5343             $nogas "GNU assembler not found, install/update gas-preprocessor"
5344     fi
5345
5346     check_as <<EOF && enable as_func
5347 .func test
5348 .endfunc
5349 EOF
5350 fi
5351
5352 check_inline_asm inline_asm_labels '"1:\n"'
5353
5354 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5355
5356 if enabled aarch64; then
5357     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5358     # internal assembler in clang 3.3 does not support this instruction
5359     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5360     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5361
5362     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5363
5364 elif enabled alpha; then
5365
5366     check_cflags -mieee
5367
5368 elif enabled arm; then
5369
5370     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5371
5372     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5373 float func(float a, float b){ return a+b; }
5374 EOF
5375
5376     enabled thumb && check_cflags -mthumb || check_cflags -marm
5377
5378     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5379         enable vfp_args
5380     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5381         enable vfp_args
5382     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5383         case "${cross_prefix:-$cc}" in
5384             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5385             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5386 __asm__ (".eabi_attribute 28, 1");
5387 int main(void) { return 0; }
5388 EOF
5389         esac
5390         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5391     fi
5392
5393     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5394     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5395     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5396     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5397     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5398     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5399     enabled setend  && check_insn setend  'setend be'
5400
5401     [ $target_os = linux ] || [ $target_os = android ] ||
5402         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5403             $ARCH_EXT_LIST_ARM
5404
5405     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5406
5407     check_as <<EOF && enable as_arch_directive
5408 .arch armv7-a
5409 EOF
5410     check_as <<EOF && enable as_fpu_directive
5411 .fpu neon
5412 EOF
5413
5414     # llvm's integrated assembler supports .object_arch from llvm 3.5
5415     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5416         check_as <<EOF && enable as_object_arch
5417 .object_arch armv4
5418 EOF
5419
5420     # MS armasm fails to assemble our PIC constructs
5421     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5422
5423 elif enabled mips; then
5424
5425     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5426     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5427     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5428
5429     # Enable minimum ISA based on selected options
5430     if enabled mips64; then
5431         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5432         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5433         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5434     else
5435         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5436         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5437         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5438         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5439     fi
5440
5441     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5442     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5443     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5444     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5445     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5446
5447     if enabled bigendian && enabled msa; then
5448         disable msa
5449     fi
5450
5451 elif enabled parisc; then
5452
5453     if enabled gcc; then
5454         case $($cc -dumpversion) in
5455             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5456         esac
5457     fi
5458
5459 elif enabled ppc; then
5460
5461     enable local_aligned
5462
5463     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5464     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5465     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5466     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5467
5468     if enabled altivec; then
5469         check_cflags -maltivec -mabi=altivec
5470
5471         # check if our compiler supports Motorola AltiVec C API
5472         check_code cc altivec.h "vector signed int v1 = (vector signed int) { 0 };
5473                                  vector signed int v2 = (vector signed int) { 1 };
5474                                  v1 = vec_add(v1, v2);" ||
5475             disable altivec
5476
5477         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5478     fi
5479
5480     if enabled vsx; then
5481         check_cflags -mvsx &&
5482         check_code cc altivec.h "int v[4] = { 0 };
5483                                  vector signed int v1 = vec_vsx_ld(0, v);" ||
5484             disable vsx
5485     fi
5486
5487     if enabled power8; then
5488         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5489     fi
5490
5491 elif enabled x86; then
5492
5493     check_builtin rdtsc    intrin.h   "__rdtsc()"
5494     check_builtin mm_empty mmintrin.h "_mm_empty()"
5495
5496     enable local_aligned
5497
5498     # check whether EBP is available on x86
5499     # As 'i' is stored on the stack, this program will crash
5500     # if the base pointer is used to access it because the
5501     # base pointer is cleared in the inline assembly code.
5502     check_exec_crash <<EOF && enable ebp_available
5503 volatile int i=0;
5504 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5505 return i;
5506 EOF
5507
5508     # check whether EBX is available on x86
5509     check_inline_asm ebx_available '""::"b"(0)' &&
5510         check_inline_asm ebx_available '"":::"%ebx"'
5511
5512     # check whether xmm clobbers are supported
5513     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5514
5515     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5516         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5517
5518     # check whether binutils is new enough to compile SSSE3/MMXEXT
5519     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5520     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5521
5522     probe_x86asm(){
5523         x86asmexe_probe=$1
5524         if check_cmd $x86asmexe_probe -v; then
5525             x86asmexe=$x86asmexe_probe
5526             x86asm_type=nasm
5527             x86asm_debug="-g -F dwarf"
5528             X86ASMDEP=
5529             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5530         elif check_cmd $x86asmexe_probe --version; then
5531             x86asmexe=$x86asmexe_probe
5532             x86asm_type=yasm
5533             x86asm_debug="-g dwarf2"
5534             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5535             X86ASM_DEPFLAGS=
5536         fi
5537         check_x86asm "movbe ecx, [5]" && enable x86asm
5538     }
5539
5540     if ! disabled_any asm mmx x86asm; then
5541         disable x86asm
5542         for program in $x86asmexe nasm yasm; do
5543             probe_x86asm $program && break
5544         done
5545         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5546         X86ASMFLAGS="-f $objformat"
5547         enabled pic               && append X86ASMFLAGS "-DPIC"
5548         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5549         case "$objformat" in
5550             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5551         esac
5552
5553         check_x86asm "vmovdqa32 [eax]{k1}{z}, zmm0"    || disable avx512_external
5554         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5555         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5556         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5557         check_x86asm "CPU amdnop" || disable cpunop
5558     fi
5559
5560     case "$cpu" in
5561         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5562             disable fast_clz
5563         ;;
5564     esac
5565
5566 fi
5567
5568 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5569
5570 check_ldflags -Wl,--as-needed
5571 check_ldflags -Wl,-z,noexecstack
5572
5573 if ! disabled network; then
5574     check_func getaddrinfo $network_extralibs
5575     check_func inet_aton $network_extralibs
5576
5577     check_type netdb.h "struct addrinfo"
5578     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5579     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5580     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5581     check_type poll.h "struct pollfd"
5582     check_type netinet/sctp.h "struct sctp_event_subscribe"
5583     check_struct "sys/socket.h" "struct msghdr" msg_flags
5584     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5585     check_type netinet/in.h "struct sockaddr_in6"
5586     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5587     check_type "sys/types.h sys/socket.h" socklen_t
5588
5589     # Prefer arpa/inet.h over winsock2
5590     if check_header arpa/inet.h ; then
5591         check_func closesocket
5592     elif check_header winsock2.h ; then
5593         check_func_headers winsock2.h closesocket -lws2 &&
5594             network_extralibs="-lws2" ||
5595         { check_func_headers winsock2.h closesocket -lws2_32 &&
5596             network_extralibs="-lws2_32"; } || disable winsock2_h network
5597         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5598
5599         check_type ws2tcpip.h socklen_t
5600         check_type ws2tcpip.h "struct addrinfo"
5601         check_type ws2tcpip.h "struct group_source_req"
5602         check_type ws2tcpip.h "struct ip_mreq_source"
5603         check_type ws2tcpip.h "struct ipv6_mreq"
5604         check_type winsock2.h "struct pollfd"
5605         check_struct winsock2.h "struct sockaddr" sa_len
5606         check_type ws2tcpip.h "struct sockaddr_in6"
5607         check_type ws2tcpip.h "struct sockaddr_storage"
5608     else
5609         disable network
5610     fi
5611 fi
5612
5613 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5614 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5615 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5616 check_builtin sarestart signal.h "SA_RESTART"
5617 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5618 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5619 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5620 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5621
5622 case "$custom_allocator" in
5623     jemalloc)
5624         # jemalloc by default does not use a prefix
5625         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5626     ;;
5627     tcmalloc)
5628         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5629         malloc_prefix=tc_
5630     ;;
5631 esac
5632
5633 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5634 check_func  ${malloc_prefix}memalign            && enable memalign
5635 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5636
5637 check_func  access
5638 check_func_headers stdlib.h arc4random
5639 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5640 check_func  fcntl
5641 check_func  fork
5642 check_func  gethrtime
5643 check_func  getopt
5644 check_func  getrusage
5645 check_func  gettimeofday
5646 check_func  isatty
5647 check_func  mkstemp
5648 check_func  mmap
5649 check_func  mprotect
5650 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5651 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5652 check_func  sched_getaffinity
5653 check_func  setrlimit
5654 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5655 check_func  strerror_r
5656 check_func  sysconf
5657 check_func  sysctl
5658 check_func  usleep
5659
5660 check_func_headers conio.h kbhit
5661 check_func_headers io.h setmode
5662 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5663 check_func_headers mach/mach_time.h mach_absolute_time
5664 check_func_headers stdlib.h getenv
5665 check_func_headers sys/stat.h lstat
5666
5667 check_func_headers windows.h GetProcessAffinityMask
5668 check_func_headers windows.h GetProcessTimes
5669 check_func_headers windows.h GetSystemTimeAsFileTime
5670 check_func_headers windows.h LoadLibrary
5671 check_func_headers windows.h MapViewOfFile
5672 check_func_headers windows.h PeekNamedPipe
5673 check_func_headers windows.h SetConsoleTextAttribute
5674 check_func_headers windows.h SetConsoleCtrlHandler
5675 check_func_headers windows.h Sleep
5676 check_func_headers windows.h VirtualAlloc
5677 check_struct windows.h "CONDITION_VARIABLE" Ptr
5678 check_func_headers glob.h glob
5679 enabled xlib &&
5680     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5681
5682 check_header direct.h
5683 check_header dirent.h
5684 check_header dxgidebug.h
5685 check_header dxva.h
5686 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5687 check_header io.h
5688 check_header libcrystalhd/libcrystalhd_if.h
5689 check_header malloc.h
5690 check_header net/udplite.h
5691 check_header poll.h
5692 check_header sys/param.h
5693 check_header sys/resource.h
5694 check_header sys/select.h
5695 check_header sys/time.h
5696 check_header sys/un.h
5697 check_header termios.h
5698 check_header unistd.h
5699 check_header valgrind/valgrind.h
5700 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5701 check_header windows.h
5702 check_header X11/extensions/XvMClib.h
5703 check_header asm/types.h
5704
5705 # it seems there are versions of clang in some distros that try to use the
5706 # gcc headers, which explodes for stdatomic
5707 # so we also check that atomics actually work here
5708 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5709
5710 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5711 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5712 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5713 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5714 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5715
5716 enabled appkit       && check_apple_framework AppKit
5717 enabled audiotoolbox && check_apple_framework AudioToolbox
5718 enabled avfoundation && check_apple_framework AVFoundation
5719 enabled coreimage    && check_apple_framework CoreImage
5720 enabled videotoolbox && check_apple_framework VideoToolbox
5721
5722 check_apple_framework CoreFoundation
5723 check_apple_framework CoreMedia
5724 check_apple_framework CoreVideo
5725
5726 enabled avfoundation && {
5727     disable coregraphics applicationservices
5728     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5729     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5730
5731 enabled videotoolbox && {
5732     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5733     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5734 }
5735
5736 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5737
5738 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5739 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5740 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5741 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5742 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5743
5744 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5745 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
5746 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5747 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5748 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5749 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5750 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5751 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5752 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5753 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5754
5755 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5756
5757 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5758
5759 if ! disabled w32threads && ! enabled pthreads; then
5760     check_func_headers "windows.h process.h" _beginthreadex &&
5761         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 $libm_extralibs
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 libtls            && require_pkg_config libtls libtls tls.h tls_configure
5904 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5905                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5906                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5907 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
5908 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5909 enabled libvmaf           && require_pkg_config libvmaf libvmaf libvmaf.h compute_vmaf
5910 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5911 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
5912                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
5913
5914 enabled libvpx            && {
5915     enabled libvpx_vp8_decoder && {
5916         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5917             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_dec_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
5918                 die "ERROR: libvpx decoder version must be >=1.4.0";
5919     }
5920     enabled libvpx_vp8_encoder && {
5921         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5922             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
5923                 die "ERROR: libvpx encoder version must be >=1.4.0";
5924     }
5925     enabled libvpx_vp9_decoder && {
5926         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5927             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
5928     }
5929     enabled libvpx_vp9_encoder && {
5930         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5931             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
5932     }
5933     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5934         die "libvpx enabled but no supported decoders found"
5935     fi
5936 }
5937
5938 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5939 enabled libwebp           && {
5940     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5941     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
5942 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
5943                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
5944                                  warn "using libx264 without pkg-config"; } } &&
5945                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
5946                              { check_cpp_condition x264.h "X264_MPEG2" &&
5947                                enable libx262; }
5948 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
5949                              require_cpp_condition x265.h "X265_BUILD >= 68"
5950 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
5951 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5952 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
5953 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
5954 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
5955                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5956                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5957 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
5958 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5959 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5960                                { ! enabled cross_compile &&
5961                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
5962                                  add_ldflags -L/opt/vc/lib/ &&
5963                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
5964                                die "ERROR: mmal not found" &&
5965                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
5966 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5967                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
5968                                die "ERROR: openal not found"; } &&
5969                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5970                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5971 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5972                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5973                                die "ERROR: opencl not found"; } &&
5974                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5975                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5976                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5977 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
5978                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5979                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5980                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5981                                die "ERROR: opengl not found."
5982                              }
5983 enabled omx               && require_header OMX_Core.h
5984 enabled omx_rpi           && { check_header OMX_Core.h ||
5985                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
5986                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
5987 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
5988                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
5989                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5990                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5991                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5992                                die "ERROR: openssl not found"; }
5993 enabled rkmpp             && { { require_pkg_config rkmpp rockchip_mpp rockchip/rk_mpi.h mpp_create ||
5994                                  die "ERROR : Rockchip MPP was not found."; } &&
5995                                { check_func_headers rockchip/rk_mpi_cmd.h "MPP_DEC_GET_FREE_PACKET_SLOT_COUNT" ||
5996                                  die "ERROR: Rockchip MPP is outdated, please get a more recent one."; } &&
5997                                { enabled libdrm ||
5998                                  die "ERROR: rkmpp requires --enable-libdrm"; }
5999                              }
6000
6001 if enabled gcrypt; then
6002     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6003     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6004         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6005         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6006         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6007             die "ERROR: gcrypt not found"
6008         add_cflags $gcrypt_cflags
6009     else
6010         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6011     fi
6012 fi
6013
6014 if enabled sdl2; then
6015     SDL2_CONFIG="${cross_prefix}sdl2-config"
6016     if test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent; then
6017         check_func SDL_Init $sdl2_extralibs $sdl2_cflags ||
6018             disable sdl2
6019     elif "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6020         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6021         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6022         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6023         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6024         check_func SDL_Init $sdl2_extralibs $sdl2_cflags &&
6025             enable sdl2
6026     fi
6027     if test $target_os = "mingw32"; then
6028         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6029     fi
6030 fi
6031
6032 if enabled decklink; then
6033     case $target_os in
6034         mingw32*|mingw64*|win32|win64)
6035             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6036             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6037             ;;
6038     esac
6039 fi
6040
6041 enabled securetransport &&
6042     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6043     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6044         disable securetransport
6045
6046 enabled securetransport &&
6047     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6048
6049 enabled schannel &&
6050     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6051     check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6052     schannel_extralibs="-lsecur32" ||
6053         disable schannel
6054
6055 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6056 enabled makeinfo \
6057     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6058     && enable makeinfo_html || disable makeinfo_html
6059 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6060 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6061 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6062 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6063
6064 # check V4L2 codecs available in the API
6065 check_header linux/fb.h
6066 check_header linux/videodev2.h
6067 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6068 check_code cc linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;" || disable v4l2_m2m
6069 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;" && enable vc1_v4l2_m2m
6070 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;" && enable mpeg1_v4l2_m2m
6071 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;" && enable mpeg2_v4l2_m2m
6072 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;" && enable mpeg4_v4l2_m2m
6073 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;" && enable hevc_v4l2_m2m
6074 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H263;" && enable h263_v4l2_m2m
6075 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H264;" && enable h264_v4l2_m2m
6076 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;" && enable vp8_v4l2_m2m
6077 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;" && enable vp9_v4l2_m2m
6078
6079 check_header sys/videoio.h
6080 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6081
6082 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6083 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6084 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6085 # w32api 3.12 had it defined wrong
6086 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6087
6088 check_type "dshow.h" IBaseFilter
6089
6090 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6091 check_header "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6092     check_header "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6093     check_header "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6094     check_header "dev/ic/bt8xx.h"
6095
6096 if check_struct sys/soundcard.h audio_buf_info bytes; then
6097     enable_sanitized sys/soundcard.h
6098 else
6099     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6100     #include <sys/soundcard.h>
6101     audio_buf_info abc;
6102 EOF
6103 fi
6104
6105 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6106     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6107
6108 enabled libjack &&
6109     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6110
6111 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6112
6113 if enabled libcdio; then
6114     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6115     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6116     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6117     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6118     die "ERROR: No usable libcdio/cdparanoia found"
6119 fi
6120
6121 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6122     disable libxcb_shm libxcb_shape libxcb_xfixes
6123
6124 if enabled libxcb; then
6125     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6126     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6127     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6128 fi
6129
6130 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6131
6132 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6133 # the desktop api partition
6134 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6135 #ifdef WINAPI_FAMILY
6136 #include <winapifamily.h>
6137 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6138 #error desktop, not uwp
6139 #else
6140 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6141 #endif
6142 #else
6143 #error no family set
6144 #endif
6145 EOF
6146
6147 enabled vaapi &&
6148     check_lib vaapi va/va.h vaInitialize -lva
6149
6150 enabled vaapi &&
6151     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6152     disable vaapi
6153
6154 enabled vaapi &&
6155     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6156
6157 enabled vaapi &&
6158     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6159
6160 enabled vaapi &&
6161     check_cpp_condition "va/va.h" "VA_CHECK_VERSION(1, 0, 0)" &&
6162     enable vaapi_1
6163
6164 if enabled_all opencl vaapi ; then
6165     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6166         enable opencl_vaapi_beignet
6167     if enabled libmfx ; then
6168         check_type "CL/cl.h CL/va_ext.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6169             enable opencl_vaapi_intel_media
6170     fi
6171 fi
6172
6173 if enabled_all opencl dxva2 ; then
6174     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6175         enable opencl_dxva2
6176 fi
6177
6178 if enabled_all opencl d3d11va ; then
6179     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6180         enable opencl_d3d11
6181 fi
6182
6183 if enabled_all opencl libdrm ; then
6184     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6185         enable opencl_drm_arm
6186 fi
6187
6188 enabled vdpau &&
6189     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6190     disable vdpau
6191
6192 enabled vdpau &&
6193     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6194
6195 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6196
6197 if enabled x86; then
6198     case $target_os in
6199         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6200             ;;
6201         *)
6202             disable cuda cuvid nvdec nvenc
6203             ;;
6204     esac
6205 else
6206     disable cuda cuvid nvdec nvenc
6207 fi
6208
6209 enabled nvenc &&
6210     check_cc -I$source_path <<EOF || disable nvenc
6211 #include "compat/nvenc/nvEncodeAPI.h"
6212 NV_ENCODE_API_FUNCTION_LIST flist;
6213 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6214 int main(void) { return 0; }
6215 EOF
6216
6217 enabled amf &&
6218     check_cpp_condition "AMF/core/Version.h" \
6219         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400040001" ||
6220     disable amf
6221
6222 # Funny iconv installations are not unusual, so check it after all flags have been set
6223 if enabled libc_iconv; then
6224     check_func_headers iconv.h iconv
6225 elif enabled iconv; then
6226     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6227 fi
6228
6229 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6230
6231 # add some useful compiler flags if supported
6232 check_cflags -Wdeclaration-after-statement
6233 check_cflags -Wall
6234 check_cflags -Wdisabled-optimization
6235 check_cflags -Wpointer-arith
6236 check_cflags -Wredundant-decls
6237 check_cflags -Wwrite-strings
6238 check_cflags -Wtype-limits
6239 check_cflags -Wundef
6240 check_cflags -Wmissing-prototypes
6241 check_cflags -Wno-pointer-to-int-cast
6242 check_cflags -Wstrict-prototypes
6243 check_cflags -Wempty-body
6244
6245 if enabled extra_warnings; then
6246     check_cflags -Wcast-qual
6247     check_cflags -Wextra
6248     check_cflags -Wpedantic
6249 fi
6250
6251 check_disable_warning(){
6252     warning_flag=-W${1#-Wno-}
6253     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6254 }
6255
6256 test_cflags -Werror=unused-command-line-argument &&
6257     append unknown_warning_flags "-Werror=unused-command-line-argument"
6258 test_cflags -Werror=unknown-warning-option &&
6259     append unknown_warning_flags "-Werror=unknown-warning-option"
6260
6261 check_disable_warning -Wno-parentheses
6262 check_disable_warning -Wno-switch
6263 check_disable_warning -Wno-format-zero-length
6264 check_disable_warning -Wno-pointer-sign
6265 check_disable_warning -Wno-unused-const-variable
6266 check_disable_warning -Wno-bool-operation
6267
6268 check_disable_warning_headers(){
6269     warning_flag=-W${1#-Wno-}
6270     test_cflags $warning_flag && add_cflags_headers $1
6271 }
6272
6273 check_disable_warning_headers -Wno-deprecated-declarations
6274 check_disable_warning_headers -Wno-unused-variable
6275
6276 check_cc <<EOF && enable blocks_extension
6277 void (^block)(void);
6278 EOF
6279
6280 # add some linker flags
6281 check_ldflags -Wl,--warn-common
6282 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6283 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6284 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6285
6286 # add some strip flags
6287 check_stripflags -x
6288
6289 enabled neon_clobber_test &&
6290     check_ldflags -Wl,--wrap,avcodec_open2              \
6291                   -Wl,--wrap,avcodec_decode_audio4      \
6292                   -Wl,--wrap,avcodec_decode_video2      \
6293                   -Wl,--wrap,avcodec_decode_subtitle2   \
6294                   -Wl,--wrap,avcodec_encode_audio2      \
6295                   -Wl,--wrap,avcodec_encode_video2      \
6296                   -Wl,--wrap,avcodec_encode_subtitle    \
6297                   -Wl,--wrap,avcodec_send_packet        \
6298                   -Wl,--wrap,avcodec_receive_packet     \
6299                   -Wl,--wrap,avcodec_send_frame         \
6300                   -Wl,--wrap,avcodec_receive_frame      \
6301                   -Wl,--wrap,swr_convert                \
6302                   -Wl,--wrap,avresample_convert ||
6303     disable neon_clobber_test
6304
6305 enabled xmm_clobber_test &&
6306     check_ldflags -Wl,--wrap,avcodec_open2              \
6307                   -Wl,--wrap,avcodec_decode_audio4      \
6308                   -Wl,--wrap,avcodec_decode_video2      \
6309                   -Wl,--wrap,avcodec_decode_subtitle2   \
6310                   -Wl,--wrap,avcodec_encode_audio2      \
6311                   -Wl,--wrap,avcodec_encode_video2      \
6312                   -Wl,--wrap,avcodec_encode_subtitle    \
6313                   -Wl,--wrap,avcodec_send_packet        \
6314                   -Wl,--wrap,avcodec_receive_packet     \
6315                   -Wl,--wrap,avcodec_send_frame         \
6316                   -Wl,--wrap,avcodec_receive_frame      \
6317                   -Wl,--wrap,swr_convert                \
6318                   -Wl,--wrap,avresample_convert         \
6319                   -Wl,--wrap,sws_scale ||
6320     disable xmm_clobber_test
6321
6322 check_ld "cc" <<EOF && enable proper_dce
6323 extern const int array[512];
6324 static inline int func(void) { return array[0]; }
6325 int main(void) { return 0; }
6326 EOF
6327
6328 if enabled proper_dce; then
6329     echo "X { local: *; };" > $TMPV
6330     if test_ldflags -Wl,${version_script},$TMPV; then
6331         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6332         quotes='""'
6333         check_cc <<EOF && enable symver_asm_label
6334 void ff_foo(void) __asm__ ("av_foo@VERSION");
6335 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6336 EOF
6337         check_cc <<EOF && enable symver_gnu_asm
6338 __asm__(".symver ff_foo,av_foo@VERSION");
6339 void ff_foo(void) {}
6340 EOF
6341     fi
6342 fi
6343
6344 if [ -z "$optflags" ]; then
6345     if enabled small; then
6346         optflags=$cflags_size
6347     elif enabled optimizations; then
6348         optflags=$cflags_speed
6349     else
6350         optflags=$cflags_noopt
6351     fi
6352 fi
6353
6354 if [ -z "$nvccflags" ]; then
6355     nvccflags=$nvccflags_default
6356 fi
6357
6358 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6359     nvccflags="$nvccflags -m64"
6360 else
6361     nvccflags="$nvccflags -m32"
6362 fi
6363
6364 check_optflags(){
6365     check_cflags "$@"
6366     enabled lto && check_ldflags "$@"
6367 }
6368
6369 check_optflags $optflags
6370 check_optflags -fno-math-errno
6371 check_optflags -fno-signed-zeros
6372
6373 if enabled lto; then
6374     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6375     check_cflags  -flto
6376     check_ldflags -flto $cpuflags
6377     disable inline_asm_direct_symbol_refs
6378 fi
6379
6380 enabled ftrapv && check_cflags -ftrapv
6381
6382 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6383 int x;
6384 EOF
6385
6386
6387 if enabled icc; then
6388     # Just warnings, no remarks
6389     check_cflags -w1
6390     # -wd: Disable following warnings
6391     # 144, 167, 556: -Wno-pointer-sign
6392     # 188: enumerated type mixed with another type
6393     # 1292: attribute "foo" ignored
6394     # 1419: external declaration in primary source file
6395     # 10006: ignoring unknown option -fno-signed-zeros
6396     # 10148: ignoring unknown option -Wno-parentheses
6397     # 10156: ignoring option '-W'; no argument required
6398     # 13200: No EMMS instruction before call to function
6399     # 13203: No EMMS instruction before return from function
6400     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6401     # 11030: Warning unknown option --as-needed
6402     # 10156: ignoring option '-export'; no argument required
6403     check_ldflags -wd10156,11030
6404     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6405     enable ebp_available
6406     # The test above does not test linking
6407     enabled lto && disable symver_asm_label
6408     if enabled x86_32; then
6409         icc_version=$($cc -dumpversion)
6410         test ${icc_version%%.*} -ge 11 &&
6411             check_cflags -falign-stack=maintain-16-byte ||
6412             disable aligned_stack
6413     fi
6414 elif enabled gcc; then
6415     check_optflags -fno-tree-vectorize
6416     check_cflags -Werror=format-security
6417     check_cflags -Werror=implicit-function-declaration
6418     check_cflags -Werror=missing-prototypes
6419     check_cflags -Werror=return-type
6420     check_cflags -Werror=vla
6421     check_cflags -Wformat
6422     check_cflags -fdiagnostics-color=auto
6423     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6424 elif enabled llvm_gcc; then
6425     check_cflags -mllvm -stack-alignment=16
6426 elif enabled clang; then
6427     check_cflags -mllvm -stack-alignment=16
6428     check_cflags -mstack-alignment=16
6429     check_cflags -Qunused-arguments
6430     check_cflags -Werror=implicit-function-declaration
6431     check_cflags -Werror=missing-prototypes
6432     check_cflags -Werror=return-type
6433 elif enabled cparser; then
6434     add_cflags -Wno-missing-variable-declarations
6435     add_cflags -Wno-empty-statement
6436 elif enabled armcc; then
6437     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6438     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6439     # 2523: use of inline assembly is deprecated
6440     add_cflags -W${armcc_opt},--diag_suppress=2523
6441     add_cflags -W${armcc_opt},--diag_suppress=1207
6442     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6443     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6444     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6445     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6446 elif enabled pathscale; then
6447     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6448     disable inline_asm
6449 elif enabled_any msvc icl; then
6450     enabled x86_32 && disable aligned_stack
6451     enabled_all x86_32 debug && add_cflags -Oy-
6452     enabled debug && add_ldflags -debug
6453     enable pragma_deprecated
6454     if enabled icl; then
6455         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6456         # (correctly) on icl 13.x.
6457         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6458             add_cflags -Qansi-alias
6459         # Some inline asm is not compilable in debug
6460         if enabled debug; then
6461             disable ebp_available
6462             disable ebx_available
6463         fi
6464     fi
6465     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6466     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6467     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6468     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6469     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6470     # MSVC 2013 and newer can handle it fine.
6471     # If this declspec fails, force including stdlib.h before the restrict redefinition
6472     # happens in config.h.
6473     if [ $_restrict != restrict ]; then
6474         check_cc <<EOF || add_cflags -FIstdlib.h
6475 __declspec($_restrict) void* foo(int);
6476 EOF
6477     fi
6478     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6479     # Issue has been fixed in MSVC v19.00.24218.
6480     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6481         check_cflags -d2SSAOptimizer-
6482     # enable utf-8 source processing on VS2015 U2 and newer
6483     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6484         add_cflags -utf-8
6485 fi
6486
6487 for pfx in "" host_; do
6488     varname=${pfx%_}cc_type
6489     eval "type=\$$varname"
6490     if [ "$type" = "msvc" ]; then
6491         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6492 static inline int foo(int a) { return a; }
6493 EOF
6494     fi
6495 done
6496
6497 case $as_type in
6498     clang)
6499         add_asflags -Qunused-arguments
6500     ;;
6501 esac
6502
6503 case $ld_type in
6504     clang)
6505         check_ldflags -Qunused-arguments
6506     ;;
6507 esac
6508
6509 enable frame_thread_encoder
6510
6511 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6512
6513 check_deps $CONFIG_LIST       \
6514            $CONFIG_EXTRA      \
6515            $HAVE_LIST         \
6516            $ALL_COMPONENTS    \
6517
6518 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"
6519
6520
6521 if test $target_os = "haiku"; then
6522     disable memalign
6523     disable posix_memalign
6524 fi
6525
6526 flatten_extralibs(){
6527     unset nested_entries
6528     list_name=$1
6529     eval list=\$${1}
6530     for entry in $list; do
6531         entry_copy=$entry
6532         resolve entry_copy
6533         append nested_entries $(filter '*_extralibs' $entry_copy)
6534         flat_entries=$(filter_out '*_extralibs' $entry_copy)
6535         eval $entry="\$flat_entries"
6536     done
6537     append $list_name "$nested_entries"
6538
6539     resolve nested_entries
6540     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6541         flatten_extralibs $list_name
6542     fi
6543 }
6544
6545 flatten_extralibs_wrapper(){
6546     list_name=$1
6547     flatten_extralibs $list_name
6548     unique $list_name
6549     resolve $list_name
6550     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6551     eval printf \''%s'\' \""\$$list_name"\"
6552 }
6553
6554 for linkunit in $LIBRARY_LIST; do
6555     unset current_extralibs
6556     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6557     for comp in ${components}; do
6558         enabled $comp || continue
6559         comp_extralibs="${comp}_extralibs"
6560         append current_extralibs $comp_extralibs
6561     done
6562     eval prepend ${linkunit}_extralibs $current_extralibs
6563 done
6564
6565 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6566     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6567 done
6568
6569 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6570
6571 for thread in $THREADS_LIST; do
6572     if enabled $thread; then
6573         test -n "$thread_type" &&
6574             die "ERROR: Only one thread type must be selected." ||
6575             thread_type="$thread"
6576     fi
6577 done
6578
6579 if disabled stdatomic; then
6580     if enabled atomics_gcc; then
6581         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6582     elif enabled atomics_win32; then
6583         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6584     elif enabled atomics_suncc; then
6585         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6586     elif enabled pthreads; then
6587         add_compat atomics/pthread/stdatomic.o
6588         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6589     else
6590         enabled threads && die "Threading is enabled, but no atomics are available"
6591         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6592     fi
6593 fi
6594
6595 # Check if requested libraries were found.
6596 for lib in $AUTODETECT_LIBS; do
6597     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6598 done
6599
6600 enabled zlib && add_cppflags -DZLIB_CONST
6601
6602 # conditional library dependencies, in linking order
6603 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6604 enabled afir_filter         && prepend avfilter_deps "avcodec"
6605 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6606 enabled aresample_filter    && prepend avfilter_deps "swresample"
6607 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6608 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6609 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6610 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6611 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6612 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6613 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6614 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6615 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6616 enabled pan_filter          && prepend avfilter_deps "swresample"
6617 enabled pp_filter           && prepend avfilter_deps "postproc"
6618 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6619 enabled resample_filter && prepend avfilter_deps "avresample"
6620 enabled sab_filter          && prepend avfilter_deps "swscale"
6621 enabled scale_filter    && prepend avfilter_deps "swscale"
6622 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6623 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6624 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6625 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6626 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6627 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6628 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6629 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6630 enabled spp_filter          && prepend avfilter_deps "avcodec"
6631 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6632 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6633 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6634
6635 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6636
6637 #FIXME
6638 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6639
6640 enabled opus_decoder    && prepend avcodec_deps "swresample"
6641
6642 expand_deps(){
6643     lib_deps=${1}_deps
6644     eval "deps=\$$lib_deps"
6645     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6646     unique $lib_deps
6647 }
6648
6649 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6650 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6651
6652 map 'expand_deps $v' $LIBRARY_LIST
6653
6654 license="LGPL version 2.1 or later"
6655 if enabled nonfree; then
6656     license="nonfree and unredistributable"
6657 elif enabled gplv3; then
6658     license="GPL version 3 or later"
6659 elif enabled lgplv3; then
6660     license="LGPL version 3 or later"
6661 elif enabled gpl; then
6662     license="GPL version 2 or later"
6663 fi
6664
6665 if test "$quiet" != "yes"; then
6666
6667 echo "install prefix            $prefix"
6668 echo "source path               $source_path"
6669 echo "C compiler                $cc"
6670 echo "C library                 $libc_type"
6671 if test "$host_cc" != "$cc"; then
6672     echo "host C compiler           $host_cc"
6673     echo "host C library            $host_libc_type"
6674 fi
6675 echo "ARCH                      $arch ($cpu)"
6676 if test "$build_suffix" != ""; then
6677     echo "build suffix              $build_suffix"
6678 fi
6679 if test "$progs_suffix" != ""; then
6680     echo "progs suffix              $progs_suffix"
6681 fi
6682 if test "$extra_version" != ""; then
6683     echo "version string suffix     $extra_version"
6684 fi
6685 echo "big-endian                ${bigendian-no}"
6686 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6687 if enabled x86; then
6688     echo "standalone assembly       ${x86asm-no}"
6689     echo "x86 assembler             ${x86asmexe}"
6690     echo "MMX enabled               ${mmx-no}"
6691     echo "MMXEXT enabled            ${mmxext-no}"
6692     echo "3DNow! enabled            ${amd3dnow-no}"
6693     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6694     echo "SSE enabled               ${sse-no}"
6695     echo "SSSE3 enabled             ${ssse3-no}"
6696     echo "AESNI enabled             ${aesni-no}"
6697     echo "AVX enabled               ${avx-no}"
6698     echo "AVX2 enabled              ${avx2-no}"
6699     echo "AVX-512 enabled           ${avx512-no}"
6700     echo "XOP enabled               ${xop-no}"
6701     echo "FMA3 enabled              ${fma3-no}"
6702     echo "FMA4 enabled              ${fma4-no}"
6703     echo "i686 features enabled     ${i686-no}"
6704     echo "CMOV is fast              ${fast_cmov-no}"
6705     echo "EBX available             ${ebx_available-no}"
6706     echo "EBP available             ${ebp_available-no}"
6707 fi
6708 if enabled aarch64; then
6709     echo "NEON enabled              ${neon-no}"
6710     echo "VFP enabled               ${vfp-no}"
6711 fi
6712 if enabled arm; then
6713     echo "ARMv5TE enabled           ${armv5te-no}"
6714     echo "ARMv6 enabled             ${armv6-no}"
6715     echo "ARMv6T2 enabled           ${armv6t2-no}"
6716     echo "VFP enabled               ${vfp-no}"
6717     echo "NEON enabled              ${neon-no}"
6718     echo "THUMB enabled             ${thumb-no}"
6719 fi
6720 if enabled mips; then
6721     echo "MIPS FPU enabled          ${mipsfpu-no}"
6722     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6723     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6724     echo "MIPS MSA enabled          ${msa-no}"
6725     echo "LOONGSON MMI enabled      ${mmi-no}"
6726 fi
6727 if enabled ppc; then
6728     echo "AltiVec enabled           ${altivec-no}"
6729     echo "VSX enabled               ${vsx-no}"
6730     echo "POWER8 enabled            ${power8-no}"
6731     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6732     echo "dcbzl available           ${dcbzl-no}"
6733 fi
6734 echo "debug symbols             ${debug-no}"
6735 echo "strip symbols             ${stripping-no}"
6736 echo "optimize for size         ${small-no}"
6737 echo "optimizations             ${optimizations-no}"
6738 echo "static                    ${static-no}"
6739 echo "shared                    ${shared-no}"
6740 echo "postprocessing support    ${postproc-no}"
6741 echo "network support           ${network-no}"
6742 echo "threading support         ${thread_type-no}"
6743 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6744 echo "texi2html enabled         ${texi2html-no}"
6745 echo "perl enabled              ${perl-no}"
6746 echo "pod2man enabled           ${pod2man-no}"
6747 echo "makeinfo enabled          ${makeinfo-no}"
6748 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6749 test -n "$random_seed" &&
6750     echo "random seed               ${random_seed}"
6751 echo
6752
6753 echo "External libraries:"
6754 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
6755 echo
6756
6757 echo "External libraries providing hardware acceleration:"
6758 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
6759 echo
6760
6761 echo "Libraries:"
6762 print_enabled '' $LIBRARY_LIST | print_in_columns
6763 echo
6764
6765 echo "Programs:"
6766 print_enabled '' $PROGRAM_LIST | print_in_columns
6767 echo
6768
6769 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6770     echo "Enabled ${type}s:"
6771     eval list=\$$(toupper $type)_LIST
6772     print_enabled '_*' $list | print_in_columns
6773     echo
6774 done
6775
6776 if test -n "$ignore_tests"; then
6777     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6778     echo "Ignored FATE tests:"
6779     echo $ignore_tests | print_in_columns
6780     echo
6781 fi
6782
6783 echo "License: $license"
6784
6785 fi # test "$quiet" != "yes"
6786
6787 if test -n "$WARNINGS"; then
6788     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6789     enabled fatal_warnings && exit 1
6790 fi
6791
6792 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6793
6794 esc(){
6795     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
6796 }
6797
6798 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
6799
6800 enabled stripping || strip="echo skipping strip"
6801 enabled stripping || striptype=""
6802
6803 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6804
6805 cat > ffbuild/config.mak <<EOF
6806 # Automatically generated by configure - do not modify!
6807 ifndef FFMPEG_CONFIG_MAK
6808 FFMPEG_CONFIG_MAK=1
6809 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6810 prefix=$prefix
6811 LIBDIR=\$(DESTDIR)$libdir
6812 SHLIBDIR=\$(DESTDIR)$shlibdir
6813 INCDIR=\$(DESTDIR)$incdir
6814 BINDIR=\$(DESTDIR)$bindir
6815 DATADIR=\$(DESTDIR)$datadir
6816 DOCDIR=\$(DESTDIR)$docdir
6817 MANDIR=\$(DESTDIR)$mandir
6818 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6819 INSTALL_NAME_DIR=$install_name_dir
6820 SRC_PATH=$source_path
6821 SRC_LINK=$source_link
6822 ifndef MAIN_MAKEFILE
6823 SRC_PATH:=\$(SRC_PATH:.%=..%)
6824 endif
6825 CC_IDENT=$cc_ident
6826 ARCH=$arch
6827 INTRINSICS=$intrinsics
6828 EXTERN_PREFIX=$extern_prefix
6829 CC=$cc
6830 CXX=$cxx
6831 AS=$as
6832 OBJCC=$objcc
6833 LD=$ld
6834 DEPCC=$dep_cc
6835 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6836 DEPAS=$as
6837 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6838 X86ASM=$x86asmexe
6839 DEPX86ASM=$x86asmexe
6840 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6841 AR=$ar
6842 ARFLAGS=$arflags
6843 AR_O=$ar_o
6844 AR_CMD=$ar
6845 NM_CMD=$nm
6846 RANLIB=$ranlib
6847 STRIP=$strip
6848 STRIPTYPE=$striptype
6849 NVCC=$nvcc
6850 CP=cp -p
6851 LN_S=$ln_s
6852 CPPFLAGS=$CPPFLAGS
6853 CFLAGS=$CFLAGS
6854 CXXFLAGS=$CXXFLAGS
6855 OBJCFLAGS=$OBJCFLAGS
6856 ASFLAGS=$ASFLAGS
6857 NVCCFLAGS=$nvccflags
6858 AS_C=$AS_C
6859 AS_O=$AS_O
6860 OBJCC_C=$OBJCC_C
6861 OBJCC_E=$OBJCC_E
6862 OBJCC_O=$OBJCC_O
6863 CC_C=$CC_C
6864 CC_E=$CC_E
6865 CC_O=$CC_O
6866 CXX_C=$CXX_C
6867 CXX_O=$CXX_O
6868 NVCC_C=$NVCC_C
6869 NVCC_O=$NVCC_O
6870 LD_O=$LD_O
6871 X86ASM_O=$X86ASM_O
6872 LD_LIB=$LD_LIB
6873 LD_PATH=$LD_PATH
6874 WINDRES=$windres
6875 DEPWINDRES=$dep_cc
6876 DOXYGEN=$doxygen
6877 LDFLAGS=$LDFLAGS
6878 LDEXEFLAGS=$LDEXEFLAGS
6879 LDSOFLAGS=$LDSOFLAGS
6880 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6881 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6882 X86ASMFLAGS=$X86ASMFLAGS
6883 BUILDSUF=$build_suffix
6884 PROGSSUF=$progs_suffix
6885 FULLNAME=$FULLNAME
6886 LIBPREF=$LIBPREF
6887 LIBSUF=$LIBSUF
6888 LIBNAME=$LIBNAME
6889 SLIBPREF=$SLIBPREF
6890 SLIBSUF=$SLIBSUF
6891 EXESUF=$EXESUF
6892 EXTRA_VERSION=$extra_version
6893 CCDEP=$CCDEP
6894 CXXDEP=$CXXDEP
6895 CCDEP_FLAGS=$CCDEP_FLAGS
6896 ASDEP=$ASDEP
6897 ASDEP_FLAGS=$ASDEP_FLAGS
6898 X86ASMDEP=$X86ASMDEP
6899 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
6900 CC_DEPFLAGS=$CC_DEPFLAGS
6901 AS_DEPFLAGS=$AS_DEPFLAGS
6902 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
6903 HOSTCC=$host_cc
6904 HOSTLD=$host_ld
6905 HOSTCFLAGS=$host_cflags
6906 HOSTCPPFLAGS=$host_cppflags
6907 HOSTEXESUF=$HOSTEXESUF
6908 HOSTLDFLAGS=$host_ldflags
6909 HOSTEXTRALIBS=$host_extralibs
6910 DEPHOSTCC=$host_cc
6911 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6912 HOSTCCDEP=$HOSTCCDEP
6913 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6914 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6915 HOSTCC_C=$HOSTCC_C
6916 HOSTCC_O=$HOSTCC_O
6917 HOSTLD_O=$HOSTLD_O
6918 TARGET_EXEC=$target_exec $target_exec_args
6919 TARGET_PATH=$target_path
6920 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6921 CFLAGS-ffplay=${sdl2_cflags}
6922 CFLAGS_HEADERS=$CFLAGS_HEADERS
6923 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6924 EXTRALIBS=$extralibs
6925 COMPAT_OBJS=$compat_objs
6926 INSTALL=$install
6927 SLIBNAME=${SLIBNAME}
6928 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6929 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6930 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6931 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6932 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6933 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6934 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6935 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6936 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6937 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6938 NOREDZONE_FLAGS=$noredzone_flags
6939 LIBFUZZER_PATH=$libfuzzer_path
6940 IGNORE_TESTS=$ignore_tests
6941 EOF
6942
6943 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
6944
6945 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6946     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
6947 done
6948
6949 cat > $TMPH <<EOF
6950 /* Automatically generated by configure - do not modify! */
6951 #ifndef FFMPEG_CONFIG_H
6952 #define FFMPEG_CONFIG_H
6953 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6954 #define FFMPEG_LICENSE "$(c_escape $license)"
6955 #define CONFIG_THIS_YEAR 2017
6956 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6957 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6958 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6959 #define av_restrict $_restrict
6960 #define EXTERN_PREFIX "${extern_prefix}"
6961 #define EXTERN_ASM ${extern_prefix}
6962 #define BUILDSUF "$build_suffix"
6963 #define SLIBSUF "$SLIBSUF"
6964 #define HAVE_MMX2 HAVE_MMXEXT
6965 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6966 EOF
6967
6968 test -n "$assert_level" &&
6969     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6970
6971 test -n "$malloc_prefix" &&
6972     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6973
6974 if enabled x86asm; then
6975     append config_files $TMPASM
6976     cat > $TMPASM <<EOF
6977 ; Automatically generated by configure - do not modify!
6978 EOF
6979 fi
6980
6981 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6982
6983
6984 mkdir -p doc
6985 mkdir -p tests
6986 mkdir -p tests/api
6987 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6988
6989 print_config ARCH_   "$config_files" $ARCH_LIST
6990 print_config HAVE_   "$config_files" $HAVE_LIST
6991 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6992                                      $CONFIG_EXTRA      \
6993                                      $ALL_COMPONENTS    \
6994
6995 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6996 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
6997
6998 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6999 cp_if_changed $TMPH config.h
7000 touch ffbuild/.config
7001
7002 enabled x86asm && cp_if_changed $TMPASM config.asm
7003
7004 cat > $TMPH <<EOF
7005 /* Generated by ffmpeg configure */
7006 #ifndef AVUTIL_AVCONFIG_H
7007 #define AVUTIL_AVCONFIG_H
7008 EOF
7009
7010 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7011
7012 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7013
7014 cp_if_changed $TMPH libavutil/avconfig.h
7015
7016 # generate the lists of enabled components
7017 print_enabled_components(){
7018     file=$1
7019     struct_name=$2
7020     name=$3
7021     shift 3
7022     echo "static const $struct_name * const $name[] = {" > $TMPH
7023     for c in $*; do
7024         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
7025     done
7026     echo "    NULL };" >> $TMPH
7027     cp_if_changed $TMPH $file
7028 }
7029
7030 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7031 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7032
7033 # Settings for pkg-config files
7034
7035 cat > $TMPH <<EOF
7036 # Automatically generated by configure - do not modify!
7037 shared=$shared
7038 build_suffix=$build_suffix
7039 prefix=$prefix
7040 libdir=$libdir
7041 incdir=$incdir
7042 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7043 source_path=${source_path}
7044 LIBPREF=${LIBPREF}
7045 LIBSUF=${LIBSUF}
7046 extralibs_avutil="$avutil_extralibs"
7047 extralibs_avcodec="$avcodec_extralibs"
7048 extralibs_avformat="$avformat_extralibs"
7049 extralibs_avdevice="$avdevice_extralibs"
7050 extralibs_avfilter="$avfilter_extralibs"
7051 extralibs_avresample="$avresample_extralibs"
7052 extralibs_postproc="$postproc_extralibs"
7053 extralibs_swscale="$swscale_extralibs"
7054 extralibs_swresample="$swresample_extralibs"
7055 EOF
7056
7057 for lib in $LIBRARY_LIST; do
7058     lib_deps="$(eval echo \$${lib}_deps)"
7059     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7060 done
7061
7062 cp_if_changed $TMPH ffbuild/config.sh