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 (deprecated) [no]
 137   --disable-pthreads       disable pthreads [autodetect]
 138   --disable-w32threads     disable Win32 threads [autodetect]
 139   --disable-os2threads     disable OS/2 threads [autodetect]
 140   --disable-network        disable network support [no]
 141   --disable-dct            disable DCT code
 142   --disable-dwt            disable DWT code
 143   --disable-error-resilience disable error resilience code
 144   --disable-lsp            disable LSP code
 145   --disable-lzo            disable LZO decoder code
 146   --disable-mdct           disable MDCT code
 147   --disable-rdft           disable RDFT code
 148   --disable-fft            disable FFT code
 149   --disable-faan           disable floating point AAN (I)DCT code
 150   --disable-pixelutils     disable pixel utils in libavutil
 151
 152 Individual component options:
 153   --disable-everything     disable all components listed below
 154   --disable-encoder=NAME   disable encoder NAME
 155   --enable-encoder=NAME    enable encoder NAME
 156   --disable-encoders       disable all encoders
 157   --disable-decoder=NAME   disable decoder NAME
 158   --enable-decoder=NAME    enable decoder NAME
 159   --disable-decoders       disable all decoders
 160   --disable-hwaccel=NAME   disable hwaccel NAME
 161   --enable-hwaccel=NAME    enable hwaccel NAME
 162   --disable-hwaccels       disable all hwaccels
 163   --disable-muxer=NAME     disable muxer NAME
 164   --enable-muxer=NAME      enable muxer NAME
 165   --disable-muxers         disable all muxers
 166   --disable-demuxer=NAME   disable demuxer NAME
 167   --enable-demuxer=NAME    enable demuxer NAME
 168   --disable-demuxers       disable all demuxers
 169   --enable-parser=NAME     enable parser NAME
 170   --disable-parser=NAME    disable parser NAME
 171   --disable-parsers        disable all parsers
 172   --enable-bsf=NAME        enable bitstream filter NAME
 173   --disable-bsf=NAME       disable bitstream filter NAME
 174   --disable-bsfs           disable all bitstream filters
 175   --enable-protocol=NAME   enable protocol NAME
 176   --disable-protocol=NAME  disable protocol NAME
 177   --disable-protocols      disable all protocols
 178   --enable-indev=NAME      enable input device NAME
 179   --disable-indev=NAME     disable input device NAME
 180   --disable-indevs         disable input devices
 181   --enable-outdev=NAME     enable output device NAME
 182   --disable-outdev=NAME    disable output device NAME
 183   --disable-outdevs        disable output devices
 184   --disable-devices        disable all devices
 185   --enable-filter=NAME     enable filter NAME
 186   --disable-filter=NAME    disable filter NAME
 187   --disable-filters        disable all filters
 188
 189 External library support:
 190
 191   Using any of the following switches will allow FFmpeg to link to the
 192   corresponding external library. All the components depending on that library
 193   will become enabled, if all their other dependencies are met and they are not
 194   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 195   libwavpack and allow the libwavpack encoder to be built, unless it is
 196   specifically disabled with --disable-encoder=libwavpack.
 197
 198   Note that only the system libraries are auto-detected. All the other external
 199   libraries must be explicitly enabled.
 200
 201   Also note that the following help text describes the purpose of the libraries
 202   themselves, not all their features will necessarily be usable by FFmpeg.
 203
 204   --disable-alsa           disable ALSA support [autodetect]
 205   --disable-appkit         disable Apple AppKit framework [autodetect]
 206   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
 207   --enable-avisynth        enable reading of AviSynth script files [no]
 208   --disable-bzlib          disable bzlib [autodetect]
 209   --disable-coreimage      disable Apple CoreImage framework [autodetect]
 210   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 211   --enable-frei0r          enable frei0r video filtering [no]
 212   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 213                            if openssl, librtmp or gmp is not used [no]
 214   --enable-gmp             enable gmp, needed for rtmp(t)e support
 215                            if openssl or librtmp is not used [no]
 216   --enable-gnutls          enable gnutls, needed for https support
 217                            if openssl or libtls is not used [no]
 218   --disable-iconv          disable iconv [autodetect]
 219   --enable-jni             enable JNI support [no]
 220   --enable-ladspa          enable LADSPA audio filtering [no]
 221   --enable-libass          enable libass subtitles rendering,
 222                            needed for subtitles and ass filter [no]
 223   --enable-libbluray       enable BluRay reading using libbluray [no]
 224   --enable-libbs2b         enable bs2b DSP library [no]
 225   --enable-libcaca         enable textual display using libcaca [no]
 226   --enable-libcelt         enable CELT decoding via libcelt [no]
 227   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 228   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 229                            and libraw1394 [no]
 230   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 231   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 232   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 233   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 234   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 235   --enable-libgme          enable Game Music Emu via libgme [no]
 236   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 237   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 238   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 239   --enable-libjack         enable JACK audio sound server [no]
 240   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 241   --enable-libmodplug      enable ModPlug via libmodplug [no]
 242   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 243   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 244   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 245   --enable-libopencv       enable video filtering via libopencv [no]
 246   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 247   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 248   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 249   --enable-libopus         enable Opus de/encoding via libopus [no]
 250   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 251   --enable-librsvg         enable SVG rasterization via librsvg [no]
 252   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 253   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 254   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 255   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 256   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 257   --enable-libsoxr         enable Include libsoxr resampling [no]
 258   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 259   --enable-libssh          enable SFTP protocol via libssh [no]
 260   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 261   --enable-libtheora       enable Theora encoding via libtheora [no]
 262   --enable-libtls          enable LibreSSL (via libtls), needed for https support
 263                            if openssl or gnutls is not used [no]
 264   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 265   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 266   --enable-libvidstab      enable video stabilization using vid.stab [no]
 267   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 268   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 269   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 270                            native implementation exists [no]
 271   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 272   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 273   --enable-libwebp         enable WebP encoding via libwebp [no]
 274   --enable-libx264         enable H.264 encoding via x264 [no]
 275   --enable-libx265         enable HEVC encoding via x265 [no]
 276   --enable-libxavs         enable AVS encoding via xavs [no]
 277   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 278   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 279   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 280   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 281   --enable-libxvid         enable Xvid encoding via xvidcore,
 282                            native MPEG-4/Xvid encoder exists [no]
 283   --enable-libxml2         enable XML parsing using the C library libxml2 [no]
 284   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 285   --enable-libzmq          enable message passing via libzmq [no]
 286   --enable-libzvbi         enable teletext support via libzvbi [no]
 287   --enable-lv2             enable LV2 audio filtering [no]
 288   --disable-lzma           disable lzma [autodetect]
 289   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 290   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
 291   --enable-mediacodec      enable Android MediaCodec support [no]
 292   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 293   --enable-openal          enable OpenAL 1.1 capture support [no]
 294   --enable-opencl          enable OpenCL processing [no]
 295   --enable-opengl          enable OpenGL rendering [no]
 296   --enable-openssl         enable openssl, needed for https support
 297                            if gnutls or libtls is not used [no]
 298   --disable-sndio          disable sndio support [autodetect]
 299   --disable-schannel       disable SChannel SSP, needed for TLS support on
 300                            Windows if openssl and gnutls are not used [autodetect]
 301   --disable-sdl2           disable sdl2 [autodetect]
 302   --disable-securetransport disable Secure Transport, needed for TLS support
 303                            on OSX if openssl and gnutls are not used [autodetect]
 304   --disable-xlib           disable xlib [autodetect]
 305   --disable-zlib           disable zlib [autodetect]
 306
 307   The following libraries provide various hardware acceleration features:
 308   --disable-amf            disable AMF video encoding code [autodetect]
 309   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 310   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
 311   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
 312   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 313   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 314   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 315   --enable-libdrm          enable DRM code (Linux) [no]
 316   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 317   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 318   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 319   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 320   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 321   --enable-omx             enable OpenMAX IL code [no]
 322   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 323   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 324   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
 325   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 326   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 327   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 328
 329 Toolchain options:
 330   --arch=ARCH              select architecture [$arch]
 331   --cpu=CPU                select the minimum required CPU (affects
 332                            instruction selection, may crash on older CPUs)
 333   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 334   --progs-suffix=SUFFIX    program name suffix []
 335   --enable-cross-compile   assume a cross-compiler is used
 336   --sysroot=PATH           root of cross-build tree
 337   --sysinclude=PATH        location of cross-build system headers
 338   --target-os=OS           compiler targets OS [$target_os]
 339   --target-exec=CMD        command to run executables on target
 340   --target-path=DIR        path to view of build directory on target
 341   --target-samples=DIR     path to samples directory on target
 342   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 343   --toolchain=NAME         set tool defaults according to NAME
 344   --nm=NM                  use nm tool NM [$nm_default]
 345   --ar=AR                  use archive tool AR [$ar_default]
 346   --as=AS                  use assembler AS [$as_default]
 347   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 348   --strip=STRIP            use strip tool STRIP [$strip_default]
 349   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 350   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 351   --cc=CC                  use C compiler CC [$cc_default]
 352   --cxx=CXX                use C compiler CXX [$cxx_default]
 353   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 354   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 355   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 356   --ld=LD                  use linker LD [$ld_default]
 357   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 358   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 359   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 360   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 361   --host-cc=HOSTCC         use host C compiler HOSTCC
 362   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 363   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 364   --host-ld=HOSTLD         use host linker HOSTLD
 365   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 366   --host-libs=HLIBS        use libs HLIBS when linking for host
 367   --host-os=OS             compiler host OS [$target_os]
 368   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 369   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 370   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 371   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 372   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 373   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 374   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 375   --extra-version=STRING   version string suffix []
 376   --optflags=OPTFLAGS      override optimization-related compiler flags
 377   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 378   --build-suffix=SUFFIX    library name suffix []
 379   --enable-pic             build position-independent code
 380   --enable-thumb           compile for Thumb instruction set
 381   --enable-lto             use link-time optimization
 382   --env="ENV=override"     override the environment variables
 383
 384 Advanced options (experts only):
 385   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 386   --custom-allocator=NAME  use a supported custom allocator
 387   --disable-symver         disable symbol versioning
 388   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 389   --disable-safe-bitstream-reader
 390                            disable buffer boundary checking in bitreaders
 391                            (faster, but may crash)
 392   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 393
 394 Optimization options (experts only):
 395   --disable-asm            disable all assembly optimizations
 396   --disable-altivec        disable AltiVec optimizations
 397   --disable-vsx            disable VSX optimizations
 398   --disable-power8         disable POWER8 optimizations
 399   --disable-amd3dnow       disable 3DNow! optimizations
 400   --disable-amd3dnowext    disable 3DNow! extended optimizations
 401   --disable-mmx            disable MMX optimizations
 402   --disable-mmxext         disable MMXEXT optimizations
 403   --disable-sse            disable SSE optimizations
 404   --disable-sse2           disable SSE2 optimizations
 405   --disable-sse3           disable SSE3 optimizations
 406   --disable-ssse3          disable SSSE3 optimizations
 407   --disable-sse4           disable SSE4 optimizations
 408   --disable-sse42          disable SSE4.2 optimizations
 409   --disable-avx            disable AVX optimizations
 410   --disable-xop            disable XOP optimizations
 411   --disable-fma3           disable FMA3 optimizations
 412   --disable-fma4           disable FMA4 optimizations
 413   --disable-avx2           disable AVX2 optimizations
 414   --disable-avx512         disable AVX-512 optimizations
 415   --disable-aesni          disable AESNI optimizations
 416   --disable-armv5te        disable armv5te optimizations
 417   --disable-armv6          disable armv6 optimizations
 418   --disable-armv6t2        disable armv6t2 optimizations
 419   --disable-vfp            disable VFP optimizations
 420   --disable-neon           disable NEON optimizations
 421   --disable-inline-asm     disable use of inline assembly
 422   --disable-x86asm         disable use of standalone x86 assembly
 423   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 424   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 425   --disable-msa            disable MSA optimizations
 426   --disable-mipsfpu        disable floating point MIPS optimizations
 427   --disable-mmi            disable Loongson SIMD optimizations
 428   --disable-fast-unaligned consider unaligned accesses slow
 429
 430 Developer options (useful when working on FFmpeg itself):
 431   --disable-debug          disable debugging symbols
 432   --enable-debug=LEVEL     set the debug level [$debuglevel]
 433   --disable-optimizations  disable compiler optimizations
 434   --enable-extra-warnings  enable more compiler warnings
 435   --disable-stripping      disable stripping of executables and shared libraries
 436   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 437                            2 causes a slowdown at runtime.
 438   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 439   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 440                            leaks and errors, using the specified valgrind binary.
 441                            Cannot be combined with --target-exec
 442   --enable-ftrapv          Trap arithmetic overflows
 443   --samples=PATH           location of test samples for FATE, if not set use
 444                            \$FATE_SAMPLES at make invocation time.
 445   --enable-neon-clobber-test check NEON registers for clobbering (should be
 446                            used only for debugging purposes)
 447   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 448                            should be used only for debugging purposes)
 449   --enable-random          randomly enable/disable components
 450   --disable-random
 451   --enable-random=LIST     randomly enable/disable specific components or
 452   --disable-random=LIST    component groups. LIST is a comma-separated list
 453                            of NAME[:PROB] entries where NAME is a component
 454                            (group) and PROB the probability associated with
 455                            NAME (default 0.5).
 456   --random-seed=VALUE      seed value for --enable/disable-random
 457   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 458                            (only applies to --disable-optimizations builds)
 459   --enable-osfuzz          Enable building fuzzer tool
 460   --libfuzzer=PATH         path to libfuzzer
 461   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 462                            in the name) of tests whose result is ignored
 463   --enable-linux-perf      enable Linux Performance Monitor API
 464
 465 NOTE: Object files are built at the place where configure is launched.
 466 EOF
 467   exit 0
 468 }
 469
 470 if test -t 1 && which tput >/dev/null 2>&1; then
 471     ncolors=$(tput colors)
 472     if test -n "$ncolors" && test $ncolors -ge 8; then
 473         bold_color=$(tput bold)
 474         warn_color=$(tput setaf 3)
 475         error_color=$(tput setaf 1)
 476         reset_color=$(tput sgr0)
 477     fi
 478     # 72 used instead of 80 since that's the default of pr
 479     ncols=$(tput cols)
 480 fi
 481 : ${ncols:=72}
 482
 483 log(){
 484     echo "$@" >> $logfile
 485 }
 486
 487 log_file(){
 488     log BEGIN $1
 489     pr -n -t $1 >> $logfile
 490     log END $1
 491 }
 492
 493 warn(){
 494     log "WARNING: $*"
 495     WARNINGS="${WARNINGS}WARNING: $*\n"
 496 }
 497
 498 die(){
 499     log "$@"
 500     echo "$error_color$bold_color$@$reset_color"
 501     cat <<EOF
 502
 503 If you think configure made a mistake, make sure you are using the latest
 504 version from Git.  If the latest version fails, report the problem to the
 505 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 506 EOF
 507     if disabled logging; then
 508         cat <<EOF
 509 Rerun configure with logging enabled (do not use --disable-logging), and
 510 include the log this produces with your report.
 511 EOF
 512     else
 513         cat <<EOF
 514 Include the log file "$logfile" produced by configure as this will help
 515 solve the problem.
 516 EOF
 517     fi
 518     exit 1
 519 }
 520
 521 # Avoid locale weirdness, besides we really just want to translate ASCII.
 522 toupper(){
 523     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 524 }
 525
 526 tolower(){
 527     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 528 }
 529
 530 c_escape(){
 531     echo "$*" | sed 's/["\\]/\\\0/g'
 532 }
 533
 534 sh_quote(){
 535     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 536     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 537     echo "$v"
 538 }
 539
 540 cleanws(){
 541     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 542 }
 543
 544 filter(){
 545     pat=$1
 546     shift
 547     for v; do
 548         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 549     done
 550 }
 551
 552 filter_out(){
 553     pat=$1
 554     shift
 555     for v; do
 556         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 557     done
 558 }
 559
 560 map(){
 561     m=$1
 562     shift
 563     for v; do eval $m; done
 564 }
 565
 566 add_suffix(){
 567     suffix=$1
 568     shift
 569     for v; do echo ${v}${suffix}; done
 570 }
 571
 572 set_all(){
 573     value=$1
 574     shift
 575     for var in $*; do
 576         eval $var=$value
 577     done
 578 }
 579
 580 set_weak(){
 581     value=$1
 582     shift
 583     for var; do
 584         eval : \${$var:=$value}
 585     done
 586 }
 587
 588 sanitize_var_name(){
 589     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 590 }
 591
 592 set_sanitized(){
 593     var=$1
 594     shift
 595     eval $(sanitize_var_name "$var")='$*'
 596 }
 597
 598 get_sanitized(){
 599     eval echo \$$(sanitize_var_name "$1")
 600 }
 601
 602 pushvar(){
 603     for pvar in $*; do
 604         eval level=\${${pvar}_level:=0}
 605         eval ${pvar}_${level}="\$$pvar"
 606         eval ${pvar}_level=$(($level+1))
 607     done
 608 }
 609
 610 popvar(){
 611     for pvar in $*; do
 612         eval level=\${${pvar}_level:-0}
 613         test $level = 0 && continue
 614         eval level=$(($level-1))
 615         eval $pvar="\${${pvar}_${level}}"
 616         eval ${pvar}_level=$level
 617         eval unset ${pvar}_${level}
 618     done
 619 }
 620
 621 request(){
 622     for var in $*; do
 623         eval ${var}_requested=yes
 624         eval $var=
 625     done
 626 }
 627
 628 enable(){
 629     set_all yes $*
 630 }
 631
 632 disable(){
 633     set_all no $*
 634 }
 635
 636 enable_weak(){
 637     set_weak yes $*
 638 }
 639
 640 disable_weak(){
 641     set_weak no $*
 642 }
 643
 644 enable_sanitized(){
 645     for var; do
 646         enable $(sanitize_var_name $var)
 647     done
 648 }
 649
 650 disable_sanitized(){
 651     for var; do
 652         disable $(sanitize_var_name $var)
 653     done
 654 }
 655
 656 do_enable_deep(){
 657     for var; do
 658         enabled $var && continue
 659         eval sel="\$${var}_select"
 660         eval sgs="\$${var}_suggest"
 661         pushvar var sgs
 662         enable_deep $sel
 663         popvar sgs
 664         enable_deep_weak $sgs
 665         popvar var
 666     done
 667 }
 668
 669 enable_deep(){
 670     do_enable_deep $*
 671     enable $*
 672 }
 673
 674 enable_deep_weak(){
 675     for var; do
 676         disabled $var && continue
 677         pushvar var
 678         do_enable_deep $var
 679         popvar var
 680         enable_weak $var
 681     done
 682 }
 683
 684 requested(){
 685     test "${1#!}" = "$1" && op="=" || op="!="
 686     eval test "x\$${1#!}_requested" $op "xyes"
 687 }
 688
 689 enabled(){
 690     test "${1#!}" = "$1" && op="=" || op="!="
 691     eval test "x\$${1#!}" $op "xyes"
 692 }
 693
 694 disabled(){
 695     test "${1#!}" = "$1" && op="=" || op="!="
 696     eval test "x\$${1#!}" $op "xno"
 697 }
 698
 699 enabled_all(){
 700     for opt; do
 701         enabled $opt || return 1
 702     done
 703 }
 704
 705 disabled_all(){
 706     for opt; do
 707         disabled $opt || return 1
 708     done
 709 }
 710
 711 enabled_any(){
 712     for opt; do
 713         enabled $opt && return 0
 714     done
 715 }
 716
 717 disabled_any(){
 718     for opt; do
 719         disabled $opt && return 0
 720     done
 721     return 1
 722 }
 723
 724 set_default(){
 725     for opt; do
 726         eval : \${$opt:=\$${opt}_default}
 727     done
 728 }
 729
 730 is_in(){
 731     value=$1
 732     shift
 733     for var in $*; do
 734         [ $var = $value ] && return 0
 735     done
 736     return 1
 737 }
 738
 739 check_deps(){
 740     for cfg; do
 741         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 742         disabled ${cfg}_checking && continue
 743         enable ${cfg}_checking
 744
 745         eval dep_all="\$${cfg}_deps"
 746         eval dep_any="\$${cfg}_deps_any"
 747         eval dep_con="\$${cfg}_conflict"
 748         eval dep_sel="\$${cfg}_select"
 749         eval dep_sgs="\$${cfg}_suggest"
 750         eval dep_ifa="\$${cfg}_if"
 751         eval dep_ifn="\$${cfg}_if_any"
 752
 753         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 754         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 755         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 756
 757         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 758         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 759         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 760         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 761         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
 762         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 763
 764         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 765
 766         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 767             # filter out library deps, these do not belong in extralibs
 768             is_in $dep $LIBRARY_LIST && continue
 769             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 770         done
 771
 772         disable ${cfg}_checking
 773     done
 774 }
 775
 776 print_config(){
 777     pfx=$1
 778     files=$2
 779     shift 2
 780     map 'eval echo "$v \${$v:-no}"' "$@" |
 781     awk "BEGIN { split(\"$files\", files) }
 782         {
 783             c = \"$pfx\" toupper(\$1);
 784             v = \$2;
 785             sub(/yes/, 1, v);
 786             sub(/no/,  0, v);
 787             for (f in files) {
 788                 file = files[f];
 789                 if (file ~ /\\.h\$/) {
 790                     printf(\"#define %s %d\\n\", c, v) >>file;
 791                 } else if (file ~ /\\.asm\$/) {
 792                     printf(\"%%define %s %d\\n\", c, v) >>file;
 793                 } else if (file ~ /\\.mak\$/) {
 794                     n = -v ? \"\" : \"!\";
 795                     printf(\"%s%s=yes\\n\", n, c) >>file;
 796                 } else if (file ~ /\\.texi\$/) {
 797                     pre = -v ? \"\" : \"@c \";
 798                     yesno = \$2;
 799                     c2 = tolower(c);
 800                     gsub(/_/, \"-\", c2);
 801                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 802                 }
 803             }
 804         }"
 805 }
 806
 807 print_enabled(){
 808     suf=$1
 809     shift
 810     for v; do
 811         enabled $v && printf "%s\n" ${v%$suf}
 812     done
 813 }
 814
 815 append(){
 816     var=$1
 817     shift
 818     eval "$var=\"\$$var $*\""
 819 }
 820
 821 prepend(){
 822     var=$1
 823     shift
 824     eval "$var=\"$* \$$var\""
 825 }
 826
 827 unique(){
 828     var=$1
 829     uniq_list=""
 830     for tok in $(eval echo \$$var); do
 831         uniq_list="$(filter_out $tok $uniq_list) $tok"
 832     done
 833     eval "$var=\"${uniq_list}\""
 834 }
 835
 836 resolve(){
 837     var=$1
 838     tmpvar=
 839     for entry in $(eval echo \$$var); do
 840         tmpvar="$tmpvar $(eval echo \$${entry})"
 841     done
 842     eval "$var=\"${tmpvar}\""
 843 }
 844
 845 add_cppflags(){
 846     append CPPFLAGS "$@"
 847 }
 848
 849 add_cflags(){
 850     append CFLAGS $($cflags_filter "$@")
 851 }
 852
 853 add_cflags_headers(){
 854     append CFLAGS_HEADERS $($cflags_filter "$@")
 855 }
 856
 857 add_cxxflags(){
 858     append CXXFLAGS $($cflags_filter "$@")
 859 }
 860
 861 add_asflags(){
 862     append ASFLAGS $($asflags_filter "$@")
 863 }
 864
 865 add_objcflags(){
 866     append OBJCFLAGS $($objcflags_filter "$@")
 867 }
 868
 869 add_ldflags(){
 870     append LDFLAGS $($ldflags_filter "$@")
 871 }
 872
 873 add_ldexeflags(){
 874     append LDEXEFLAGS $($ldflags_filter "$@")
 875 }
 876
 877 add_ldsoflags(){
 878     append LDSOFLAGS $($ldflags_filter "$@")
 879 }
 880
 881 add_stripflags(){
 882     append ASMSTRIPFLAGS "$@"
 883 }
 884
 885 add_extralibs(){
 886     prepend extralibs $($ldflags_filter "$@")
 887 }
 888
 889 add_host_cppflags(){
 890     append host_cppflags "$@"
 891 }
 892
 893 add_host_cflags(){
 894     append host_cflags $($host_cflags_filter "$@")
 895 }
 896
 897 add_host_ldflags(){
 898     append host_ldflags $($host_ldflags_filter "$@")
 899 }
 900
 901 add_compat(){
 902     append compat_objs $1
 903     shift
 904     map 'add_cppflags -D$v' "$@"
 905 }
 906
 907 check_cmd(){
 908     log "$@"
 909     "$@" >> $logfile 2>&1
 910 }
 911
 912 check_stat(){
 913     log check_stat "$@"
 914     stat "$1" >> $logfile 2>&1
 915 }
 916
 917 cc_o(){
 918     eval printf '%s\\n' $CC_O
 919 }
 920
 921 cc_e(){
 922     eval printf '%s\\n' $CC_E
 923 }
 924
 925 check_cc(){
 926     log check_cc "$@"
 927     cat > $TMPC
 928     log_file $TMPC
 929     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 930 }
 931
 932 check_cxx(){
 933     log check_cxx "$@"
 934     cat > $TMPCPP
 935     log_file $TMPCPP
 936     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 937 }
 938
 939 check_objcc(){
 940     log check_objcc "$@"
 941     cat > $TMPM
 942     log_file $TMPM
 943     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 944 }
 945
 946 check_cpp(){
 947     log check_cpp "$@"
 948     cat > $TMPC
 949     log_file $TMPC
 950     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 951 }
 952
 953 as_o(){
 954     eval printf '%s\\n' $AS_O
 955 }
 956
 957 check_as(){
 958     log check_as "$@"
 959     cat > $TMPS
 960     log_file $TMPS
 961     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 962 }
 963
 964 check_inline_asm(){
 965     log check_inline_asm "$@"
 966     name="$1"
 967     code="$2"
 968     shift 2
 969     disable $name
 970     check_cc "$@" <<EOF && enable $name
 971 void foo(void){ __asm__ volatile($code); }
 972 EOF
 973 }
 974
 975 check_inline_asm_flags(){
 976     log check_inline_asm_flags "$@"
 977     name="$1"
 978     code="$2"
 979     flags=''
 980     shift 2
 981     while [ "$1" != "" ]; do
 982       append flags $1
 983       shift
 984     done;
 985     disable $name
 986     cat > $TMPC <<EOF
 987 void foo(void){ __asm__ volatile($code); }
 988 EOF
 989     log_file $TMPC
 990     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 991     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 992 }
 993
 994 check_insn(){
 995     log check_insn "$@"
 996     check_inline_asm ${1}_inline "\"$2\""
 997     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 998 }
 999
1000 check_x86asm(){
1001     log check_x86asm "$@"
1002     echo "$1" > $TMPS
1003     log_file $TMPS
1004     shift 1
1005     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1006 }
1007
1008 ld_o(){
1009     eval printf '%s\\n' $LD_O
1010 }
1011
1012 check_ld(){
1013     log check_ld "$@"
1014     type=$1
1015     shift 1
1016     flags=$(filter_out '-l*|*.so' $@)
1017     libs=$(filter '-l*|*.so' $@)
1018     check_$type $($cflags_filter $flags) || return
1019     flags=$($ldflags_filter $flags)
1020     libs=$($ldflags_filter $libs)
1021     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1022 }
1023
1024 print_include(){
1025     hdr=$1
1026     test "${hdr%.h}" = "${hdr}" &&
1027         echo "#include $hdr"    ||
1028         echo "#include <$hdr>"
1029 }
1030
1031 check_code(){
1032     log check_code "$@"
1033     check=$1
1034     headers=$2
1035     code=$3
1036     shift 3
1037     {
1038         for hdr in $headers; do
1039             print_include $hdr
1040         done
1041         echo "int main(void) { $code; return 0; }"
1042     } | check_$check "$@"
1043 }
1044
1045 check_cppflags(){
1046     log check_cppflags "$@"
1047     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1048 #include <stdlib.h>
1049 EOF
1050 }
1051
1052 test_cflags(){
1053     log test_cflags "$@"
1054     set -- $($cflags_filter "$@")
1055     check_cc "$@" <<EOF
1056 int x;
1057 EOF
1058 }
1059
1060 check_cflags(){
1061     log check_cflags "$@"
1062     test_cflags "$@" && add_cflags "$@"
1063 }
1064
1065 check_cxxflags(){
1066     log check_cxxflags "$@"
1067     set -- $($cflags_filter "$@")
1068     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1069 int x;
1070 EOF
1071 }
1072
1073 test_objcflags(){
1074     log test_objcflags "$@"
1075     set -- $($objcflags_filter "$@")
1076     check_objcc "$@" <<EOF
1077 int x;
1078 EOF
1079 }
1080
1081 check_objcflags(){
1082     log check_objcflags "$@"
1083     test_objcflags "$@" && add_objcflags "$@"
1084 }
1085
1086 test_ldflags(){
1087     log test_ldflags "$@"
1088     set -- $($ldflags_filter "$@")
1089     check_ld "cc" "$@" <<EOF
1090 int main(void){ return 0; }
1091 EOF
1092 }
1093
1094 check_ldflags(){
1095     log check_ldflags "$@"
1096     test_ldflags "$@" && add_ldflags "$@"
1097 }
1098
1099 test_stripflags(){
1100     log test_stripflags "$@"
1101     # call check_cc to get a fresh TMPO
1102     check_cc <<EOF
1103 int main(void) { return 0; }
1104 EOF
1105     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1106 }
1107
1108 check_stripflags(){
1109     log check_stripflags "$@"
1110     test_stripflags "$@" && add_stripflags "$@"
1111 }
1112
1113 check_header(){
1114     log check_header "$@"
1115     headers=$1
1116     shift
1117     disable_sanitized $headers
1118     {
1119         for hdr in $headers; do
1120             print_include $hdr
1121         done
1122         echo "int x;"
1123     } | check_cpp "$@" && enable_sanitized $headers
1124 }
1125
1126 check_header_objcc(){
1127     log check_header_objcc "$@"
1128     rm -f -- "$TMPO"
1129     header=$1
1130     shift
1131     disable_sanitized $header
1132     {
1133        echo "#include <$header>"
1134        echo "int main(void) { return 0; }"
1135     } | check_objcc && check_stat "$TMPO" && enable_sanitized $header
1136 }
1137
1138 check_apple_framework(){
1139     log check_apple_framework "$@"
1140     framework="$1"
1141     name="$(tolower $framework)"
1142     header="${framework}/${framework}.h"
1143     disable $name
1144     check_header_objcc $header &&
1145         enable $name && eval ${name}_extralibs='"-framework $framework"'
1146 }
1147
1148 check_func(){
1149     log check_func "$@"
1150     func=$1
1151     shift
1152     disable $func
1153     check_ld "cc" "$@" <<EOF && enable $func
1154 extern int $func();
1155 int main(void){ $func(); }
1156 EOF
1157 }
1158
1159 check_complexfunc(){
1160     log check_complexfunc "$@"
1161     func=$1
1162     narg=$2
1163     shift 2
1164     test $narg = 2 && args="f, g" || args="f * I"
1165     disable $func
1166     check_ld "cc" "$@" <<EOF && enable $func
1167 #include <complex.h>
1168 #include <math.h>
1169 float foo(complex float f, complex float g) { return $func($args); }
1170 int main(void){ return (int) foo; }
1171 EOF
1172 }
1173
1174 check_mathfunc(){
1175     log check_mathfunc "$@"
1176     func=$1
1177     narg=$2
1178     shift 2
1179     test $narg = 2 && args="f, g" || args="f"
1180     disable $func
1181     check_ld "cc" "$@" <<EOF && enable $func
1182 #include <math.h>
1183 float foo(float f, float g) { return $func($args); }
1184 int main(void){ return (int) foo; }
1185 EOF
1186 }
1187
1188 check_func_headers(){
1189     log check_func_headers "$@"
1190     headers=$1
1191     funcs=$2
1192     shift 2
1193     {
1194         for hdr in $headers; do
1195             print_include $hdr
1196         done
1197         echo "#include <stdint.h>"
1198         for func in $funcs; do
1199             echo "long check_$func(void) { return (long) $func; }"
1200         done
1201         echo "int main(void) { int ret = 0;"
1202         # LTO could optimize out the test functions without this
1203         for func in $funcs; do
1204             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1205         done
1206         echo "return ret; }"
1207     } | check_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1208 }
1209
1210 check_class_headers_cpp(){
1211     log check_class_headers_cpp "$@"
1212     headers=$1
1213     classes=$2
1214     shift 2
1215     {
1216         for hdr in $headers; do
1217             echo "#include <$hdr>"
1218         done
1219         echo "int main(void) { "
1220         i=1
1221         for class in $classes; do
1222             echo "$class obj$i;"
1223             i=$(expr $i + 1)
1224         done
1225         echo "return 0; }"
1226     } | check_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1227 }
1228
1229 check_cpp_condition(){
1230     log check_cpp_condition "$@"
1231     header=$1
1232     condition=$2
1233     shift 2
1234     check_cpp "$@" <<EOF
1235 #include <$header>
1236 #if !($condition)
1237 #error "unsatisfied condition: $condition"
1238 #endif
1239 EOF
1240 }
1241
1242 test_cflags_cc(){
1243     log test_cflags_cc "$@"
1244     flags=$1
1245     header=$2
1246     condition=$3
1247     shift 3
1248     set -- $($cflags_filter "$flags")
1249     check_cc "$@" <<EOF
1250 #include <$header>
1251 #if !($condition)
1252 #error "unsatisfied condition: $condition"
1253 #endif
1254 EOF
1255 }
1256
1257 check_lib(){
1258     log check_lib "$@"
1259     name="$1"
1260     headers="$2"
1261     funcs="$3"
1262     shift 3
1263     disable $name
1264     check_func_headers "$headers" "$funcs" "$@" &&
1265         enable $name && eval ${name}_extralibs="\$@"
1266 }
1267
1268 check_lib_cpp(){
1269     log check_lib_cpp "$@"
1270     name="$1"
1271     headers="$2"
1272     classes="$3"
1273     shift 3
1274     disable $name
1275     check_class_headers_cpp "$headers" "$classes" "$@" &&
1276         enable $name && eval ${name}_extralibs="\$@"
1277 }
1278
1279 test_pkg_config(){
1280     log test_pkg_config "$@"
1281     name="$1"
1282     pkg_version="$2"
1283     pkg="${2%% *}"
1284     headers="$3"
1285     funcs="$4"
1286     shift 4
1287     disable $name
1288     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1289     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1290     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1291     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1292         enable $name &&
1293         set_sanitized "${name}_cflags"    $pkg_cflags &&
1294         set_sanitized "${name}_extralibs" $pkg_libs
1295 }
1296
1297 check_pkg_config(){
1298     log check_pkg_config "$@"
1299     name="$1"
1300     test_pkg_config "$@" &&
1301         eval add_cflags \$${name}_cflags
1302 }
1303
1304 check_exec(){
1305     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1306 }
1307
1308 check_exec_crash(){
1309     log check_exec_crash "$@"
1310     code=$(cat)
1311
1312     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1313     # are safe but may not be available everywhere.  Thus we use
1314     # raise(SIGTERM) instead.  The check is run in a subshell so we
1315     # can redirect the "Terminated" message from the shell.  SIGBUS
1316     # is not defined by standard C so it is used conditionally.
1317
1318     (check_exec "$@") >> $logfile 2>&1 <<EOF
1319 #include <signal.h>
1320 static void sighandler(int sig){
1321     raise(SIGTERM);
1322 }
1323 int foo(void){
1324     $code
1325 }
1326 int (*func_ptr)(void) = foo;
1327 int main(void){
1328     signal(SIGILL, sighandler);
1329     signal(SIGFPE, sighandler);
1330     signal(SIGSEGV, sighandler);
1331 #ifdef SIGBUS
1332     signal(SIGBUS, sighandler);
1333 #endif
1334     return func_ptr();
1335 }
1336 EOF
1337 }
1338
1339 check_type(){
1340     log check_type "$@"
1341     headers=$1
1342     type=$2
1343     shift 2
1344     disable_sanitized "$type"
1345     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1346 }
1347
1348 check_struct(){
1349     log check_struct "$@"
1350     headers=$1
1351     struct=$2
1352     member=$3
1353     shift 3
1354     disable_sanitized "${struct}_${member}"
1355     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1356         enable_sanitized "${struct}_${member}"
1357 }
1358
1359 check_builtin(){
1360     log check_builtin "$@"
1361     name=$1
1362     headers=$2
1363     builtin=$3
1364     shift 3
1365     disable "$name"
1366     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1367 }
1368
1369 check_compile_assert(){
1370     log check_compile_assert "$@"
1371     name=$1
1372     headers=$2
1373     condition=$3
1374     shift 3
1375     disable "$name"
1376     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1377 }
1378
1379 require(){
1380     log require "$@"
1381     name_version="$1"
1382     name="${1%% *}"
1383     headers="$2"
1384     func="$3"
1385     shift 3
1386     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1387 }
1388
1389 require_cpp(){
1390     name="$1"
1391     headers="$2"
1392     classes="$3"
1393     shift 3
1394     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1395 }
1396
1397 require_header(){
1398     log require_header "$@"
1399     headers="$1"
1400     shift
1401     check_header "$headers" "$@" || die "ERROR: $headers not found"
1402 }
1403
1404 require_cpp_condition(){
1405     log require_cpp_condition "$@"
1406     header="$1"
1407     condition="$2"
1408     shift 2
1409     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1410 }
1411
1412 require_pkg_config(){
1413     log require_pkg_config "$@"
1414     pkg_version="$2"
1415     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1416 }
1417
1418 hostcc_e(){
1419     eval printf '%s\\n' $HOSTCC_E
1420 }
1421
1422 hostcc_o(){
1423     eval printf '%s\\n' $HOSTCC_O
1424 }
1425
1426 check_host_cc(){
1427     log check_host_cc "$@"
1428     cat > $TMPC
1429     log_file $TMPC
1430     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1431 }
1432
1433 check_host_cpp(){
1434     log check_host_cpp "$@"
1435     cat > $TMPC
1436     log_file $TMPC
1437     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1438 }
1439
1440 check_host_cppflags(){
1441     log check_host_cppflags "$@"
1442     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1443 #include <stdlib.h>
1444 EOF
1445 }
1446
1447 check_host_cflags(){
1448     log check_host_cflags "$@"
1449     set -- $($host_cflags_filter "$@")
1450     check_host_cc "$@" <<EOF && append host_cflags "$@"
1451 int x;
1452 EOF
1453 }
1454
1455 check_host_cpp_condition(){
1456     log check_host_cpp_condition "$@"
1457     header=$1
1458     condition=$2
1459     shift 2
1460     check_host_cpp "$@" <<EOF
1461 #include <$header>
1462 #if !($condition)
1463 #error "unsatisfied condition: $condition"
1464 #endif
1465 EOF
1466 }
1467
1468 cp_if_changed(){
1469     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1470     mkdir -p "$(dirname $2)"
1471     cp -f "$1" "$2"
1472 }
1473
1474 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1475 # system-dependent things.
1476
1477 AVCODEC_COMPONENTS="
1478     bsfs
1479     decoders
1480     encoders
1481     hwaccels
1482     parsers
1483 "
1484
1485 AVDEVICE_COMPONENTS="
1486     indevs
1487     outdevs
1488 "
1489
1490 AVFILTER_COMPONENTS="
1491     filters
1492 "
1493
1494 AVFORMAT_COMPONENTS="
1495     demuxers
1496     muxers
1497     protocols
1498 "
1499
1500 COMPONENT_LIST="
1501     $AVCODEC_COMPONENTS
1502     $AVDEVICE_COMPONENTS
1503     $AVFILTER_COMPONENTS
1504     $AVFORMAT_COMPONENTS
1505 "
1506
1507 EXAMPLE_LIST="
1508     avio_dir_cmd_example
1509     avio_reading_example
1510     decode_audio_example
1511     decode_video_example
1512     demuxing_decoding_example
1513     encode_audio_example
1514     encode_video_example
1515     extract_mvs_example
1516     filter_audio_example
1517     filtering_audio_example
1518     filtering_video_example
1519     http_multiclient_example
1520     hw_decode_example
1521     metadata_example
1522     muxing_example
1523     qsvdec_example
1524     remuxing_example
1525     resampling_audio_example
1526     scaling_video_example
1527     transcode_aac_example
1528     transcoding_example
1529     vaapi_encode_example
1530 "
1531
1532 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1533     alsa
1534     appkit
1535     avfoundation
1536     bzlib
1537     coreimage
1538     iconv
1539     libxcb
1540     libxcb_shm
1541     libxcb_shape
1542     libxcb_xfixes
1543     lzma
1544     schannel
1545     sdl2
1546     securetransport
1547     sndio
1548     xlib
1549     zlib
1550 "
1551
1552 EXTERNAL_LIBRARY_GPL_LIST="
1553     avisynth
1554     frei0r
1555     libcdio
1556     librubberband
1557     libvidstab
1558     libx264
1559     libx265
1560     libxavs
1561     libxvid
1562 "
1563
1564 EXTERNAL_LIBRARY_NONFREE_LIST="
1565     decklink
1566     libndi_newtek
1567     libfdk_aac
1568     openssl
1569     libtls
1570 "
1571
1572 EXTERNAL_LIBRARY_VERSION3_LIST="
1573     gmp
1574     libopencore_amrnb
1575     libopencore_amrwb
1576     libvmaf
1577     libvo_amrwbenc
1578     rkmpp
1579 "
1580
1581 EXTERNAL_LIBRARY_GPLV3_LIST="
1582     libsmbclient
1583 "
1584
1585 EXTERNAL_LIBRARY_LIST="
1586     $EXTERNAL_LIBRARY_GPL_LIST
1587     $EXTERNAL_LIBRARY_NONFREE_LIST
1588     $EXTERNAL_LIBRARY_VERSION3_LIST
1589     $EXTERNAL_LIBRARY_GPLV3_LIST
1590     chromaprint
1591     gcrypt
1592     gnutls
1593     jni
1594     ladspa
1595     libass
1596     libbluray
1597     libbs2b
1598     libcaca
1599     libcelt
1600     libdc1394
1601     libdrm
1602     libflite
1603     libfontconfig
1604     libfreetype
1605     libfribidi
1606     libgme
1607     libgsm
1608     libiec61883
1609     libilbc
1610     libjack
1611     libkvazaar
1612     libmodplug
1613     libmp3lame
1614     libmysofa
1615     libopencv
1616     libopenh264
1617     libopenjpeg
1618     libopenmpt
1619     libopus
1620     libpulse
1621     librsvg
1622     librtmp
1623     libshine
1624     libsmbclient
1625     libsnappy
1626     libsoxr
1627     libspeex
1628     libssh
1629     libtesseract
1630     libtheora
1631     libtwolame
1632     libv4l2
1633     libvorbis
1634     libvpx
1635     libwavpack
1636     libwebp
1637     libxml2
1638     libzimg
1639     libzmq
1640     libzvbi
1641     lv2
1642     mediacodec
1643     openal
1644     opengl
1645 "
1646
1647 HWACCEL_AUTODETECT_LIBRARY_LIST="
1648     amf
1649     audiotoolbox
1650     crystalhd
1651     cuda
1652     cuvid
1653     d3d11va
1654     dxva2
1655     nvdec
1656     nvenc
1657     vaapi
1658     vdpau
1659     videotoolbox
1660     v4l2_m2m
1661     xvmc
1662 "
1663
1664 # catchall list of things that require external libs to link
1665 EXTRALIBS_LIST="
1666     cpu_init
1667     cws2fws
1668 "
1669
1670 HWACCEL_LIBRARY_NONFREE_LIST="
1671     cuda_sdk
1672     libnpp
1673 "
1674
1675 HWACCEL_LIBRARY_LIST="
1676     $HWACCEL_LIBRARY_NONFREE_LIST
1677     libmfx
1678     mmal
1679     omx
1680     opencl
1681 "
1682
1683 DOCUMENT_LIST="
1684     doc
1685     htmlpages
1686     manpages
1687     podpages
1688     txtpages
1689 "
1690
1691 FEATURE_LIST="
1692     ftrapv
1693     gray
1694     hardcoded_tables
1695     omx_rpi
1696     runtime_cpudetect
1697     safe_bitstream_reader
1698     shared
1699     small
1700     static
1701     swscale_alpha
1702 "
1703
1704 LIBRARY_LIST="
1705     avcodec
1706     avdevice
1707     avfilter
1708     avformat
1709     avresample
1710     avutil
1711     postproc
1712     swresample
1713     swscale
1714 "
1715
1716 LICENSE_LIST="
1717     gpl
1718     nonfree
1719     version3
1720 "
1721
1722 PROGRAM_LIST="
1723     ffplay
1724     ffprobe
1725     ffserver
1726     ffmpeg
1727 "
1728
1729 SUBSYSTEM_LIST="
1730     dct
1731     dwt
1732     error_resilience
1733     faan
1734     fast_unaligned
1735     fft
1736     lsp
1737     lzo
1738     mdct
1739     pixelutils
1740     network
1741     rdft
1742 "
1743
1744 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1745 CONFIG_LIST="
1746     $DOCUMENT_LIST
1747     $EXAMPLE_LIST
1748     $EXTERNAL_LIBRARY_LIST
1749     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1750     $HWACCEL_LIBRARY_LIST
1751     $HWACCEL_AUTODETECT_LIBRARY_LIST
1752     $FEATURE_LIST
1753     $LICENSE_LIST
1754     $LIBRARY_LIST
1755     $PROGRAM_LIST
1756     $SUBSYSTEM_LIST
1757     autodetect
1758     fontconfig
1759     linux_perf
1760     memory_poisoning
1761     neon_clobber_test
1762     ossfuzz
1763     pic
1764     thumb
1765     valgrind_backtrace
1766     xmm_clobber_test
1767     $COMPONENT_LIST
1768 "
1769
1770 THREADS_LIST="
1771     pthreads
1772     os2threads
1773     w32threads
1774 "
1775
1776 ATOMICS_LIST="
1777     atomics_gcc
1778     atomics_suncc
1779     atomics_win32
1780 "
1781
1782 AUTODETECT_LIBS="
1783     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1784     $HWACCEL_AUTODETECT_LIBRARY_LIST
1785     $THREADS_LIST
1786 "
1787
1788 ARCH_LIST="
1789     aarch64
1790     alpha
1791     arm
1792     avr32
1793     avr32_ap
1794     avr32_uc
1795     bfin
1796     ia64
1797     m68k
1798     mips
1799     mips64
1800     parisc
1801     ppc
1802     ppc64
1803     s390
1804     sh4
1805     sparc
1806     sparc64
1807     tilegx
1808     tilepro
1809     tomi
1810     x86
1811     x86_32
1812     x86_64
1813 "
1814
1815 ARCH_EXT_LIST_ARM="
1816     armv5te
1817     armv6
1818     armv6t2
1819     armv8
1820     neon
1821     vfp
1822     vfpv3
1823     setend
1824 "
1825
1826 ARCH_EXT_LIST_MIPS="
1827     mipsfpu
1828     mips32r2
1829     mips32r5
1830     mips64r2
1831     mips32r6
1832     mips64r6
1833     mipsdsp
1834     mipsdspr2
1835     msa
1836 "
1837
1838 ARCH_EXT_LIST_LOONGSON="
1839     loongson2
1840     loongson3
1841     mmi
1842 "
1843
1844 ARCH_EXT_LIST_X86_SIMD="
1845     aesni
1846     amd3dnow
1847     amd3dnowext
1848     avx
1849     avx2
1850     avx512
1851     fma3
1852     fma4
1853     mmx
1854     mmxext
1855     sse
1856     sse2
1857     sse3
1858     sse4
1859     sse42
1860     ssse3
1861     xop
1862 "
1863
1864 ARCH_EXT_LIST_PPC="
1865     altivec
1866     dcbzl
1867     ldbrx
1868     power8
1869     ppc4xx
1870     vsx
1871 "
1872
1873 ARCH_EXT_LIST_X86="
1874     $ARCH_EXT_LIST_X86_SIMD
1875     cpunop
1876     i686
1877 "
1878
1879 ARCH_EXT_LIST="
1880     $ARCH_EXT_LIST_ARM
1881     $ARCH_EXT_LIST_PPC
1882     $ARCH_EXT_LIST_X86
1883     $ARCH_EXT_LIST_MIPS
1884     $ARCH_EXT_LIST_LOONGSON
1885 "
1886
1887 ARCH_FEATURES="
1888     aligned_stack
1889     fast_64bit
1890     fast_clz
1891     fast_cmov
1892     local_aligned
1893     simd_align_16
1894     simd_align_32
1895     simd_align_64
1896 "
1897
1898 BUILTIN_LIST="
1899     atomic_cas_ptr
1900     machine_rw_barrier
1901     MemoryBarrier
1902     mm_empty
1903     rdtsc
1904     sarestart
1905     sem_timedwait
1906     sync_val_compare_and_swap
1907 "
1908 HAVE_LIST_CMDLINE="
1909     inline_asm
1910     symver
1911     x86asm
1912 "
1913
1914 HAVE_LIST_PUB="
1915     bigendian
1916     fast_unaligned
1917 "
1918
1919 HEADERS_LIST="
1920     arpa_inet_h
1921     asm_types_h
1922     cdio_paranoia_h
1923     cdio_paranoia_paranoia_h
1924     cuda_h
1925     dispatch_dispatch_h
1926     dev_bktr_ioctl_bt848_h
1927     dev_bktr_ioctl_meteor_h
1928     dev_ic_bt8xx_h
1929     dev_video_bktr_ioctl_bt848_h
1930     dev_video_meteor_ioctl_meteor_h
1931     direct_h
1932     dirent_h
1933     dxgidebug_h
1934     dxva_h
1935     ES2_gl_h
1936     gsm_h
1937     io_h
1938     machine_ioctl_bt848_h
1939     machine_ioctl_meteor_h
1940     malloc_h
1941     opencv2_core_core_c_h
1942     OpenGL_gl3_h
1943     poll_h
1944     sys_param_h
1945     sys_resource_h
1946     sys_select_h
1947     sys_soundcard_h
1948     sys_time_h
1949     sys_un_h
1950     sys_videoio_h
1951     termios_h
1952     udplite_h
1953     unistd_h
1954     valgrind_valgrind_h
1955     windows_h
1956     winsock2_h
1957 "
1958
1959 INTRINSICS_LIST="
1960     intrinsics_neon
1961 "
1962
1963 COMPLEX_FUNCS="
1964     cabs
1965     cexp
1966 "
1967
1968 MATH_FUNCS="
1969     atanf
1970     atan2f
1971     cbrt
1972     cbrtf
1973     copysign
1974     cosf
1975     erf
1976     exp2
1977     exp2f
1978     expf
1979     hypot
1980     isfinite
1981     isinf
1982     isnan
1983     ldexpf
1984     llrint
1985     llrintf
1986     log2
1987     log2f
1988     log10f
1989     lrint
1990     lrintf
1991     powf
1992     rint
1993     round
1994     roundf
1995     sinf
1996     trunc
1997     truncf
1998 "
1999
2000 SYSTEM_FEATURES="
2001     atomics_native
2002     dos_paths
2003     libc_msvcrt
2004     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2005     section_data_rel_ro
2006     threads
2007     uwp
2008     winrt
2009 "
2010
2011 SYSTEM_FUNCS="
2012     access
2013     aligned_malloc
2014     arc4random
2015     clock_gettime
2016     closesocket
2017     CommandLineToArgvW
2018     fcntl
2019     getaddrinfo
2020     gethrtime
2021     getopt
2022     GetProcessAffinityMask
2023     GetProcessMemoryInfo
2024     GetProcessTimes
2025     getrusage
2026     GetSystemTimeAsFileTime
2027     gettimeofday
2028     glob
2029     glXGetProcAddress
2030     gmtime_r
2031     inet_aton
2032     isatty
2033     kbhit
2034     localtime_r
2035     lstat
2036     lzo1x_999_compress
2037     mach_absolute_time
2038     MapViewOfFile
2039     memalign
2040     mkstemp
2041     mmap
2042     mprotect
2043     nanosleep
2044     PeekNamedPipe
2045     posix_memalign
2046     pthread_cancel
2047     sched_getaffinity
2048     SecItemImport
2049     SetConsoleTextAttribute
2050     SetConsoleCtrlHandler
2051     setmode
2052     setrlimit
2053     Sleep
2054     strerror_r
2055     sysconf
2056     sysctl
2057     usleep
2058     UTGetOSTypeFromString
2059     VirtualAlloc
2060     wglGetProcAddress
2061 "
2062
2063 SYSTEM_LIBRARIES="
2064     vaapi_drm
2065     vaapi_x11
2066     vdpau_x11
2067     wincrypt
2068 "
2069
2070 TOOLCHAIN_FEATURES="
2071     as_arch_directive
2072     as_fpu_directive
2073     as_func
2074     as_object_arch
2075     asm_mod_q
2076     blocks_extension
2077     ebp_available
2078     ebx_available
2079     gnu_as
2080     gnu_windres
2081     ibm_asm
2082     inline_asm_direct_symbol_refs
2083     inline_asm_labels
2084     inline_asm_nonlocal_labels
2085     pragma_deprecated
2086     rsync_contimeout
2087     symver_asm_label
2088     symver_gnu_asm
2089     vfp_args
2090     xform_asm
2091     xmm_clobbers
2092 "
2093
2094 TYPES_LIST="
2095     kCMVideoCodecType_HEVC
2096     socklen_t
2097     struct_addrinfo
2098     struct_group_source_req
2099     struct_ip_mreq_source
2100     struct_ipv6_mreq
2101     struct_msghdr_msg_flags
2102     struct_pollfd
2103     struct_rusage_ru_maxrss
2104     struct_sctp_event_subscribe
2105     struct_sockaddr_in6
2106     struct_sockaddr_sa_len
2107     struct_sockaddr_storage
2108     struct_stat_st_mtim_tv_nsec
2109     struct_v4l2_frmivalenum_discrete
2110 "
2111
2112 HAVE_LIST="
2113     $ARCH_EXT_LIST
2114     $(add_suffix _external $ARCH_EXT_LIST)
2115     $(add_suffix _inline   $ARCH_EXT_LIST)
2116     $ARCH_FEATURES
2117     $ATOMICS_LIST
2118     $BUILTIN_LIST
2119     $COMPLEX_FUNCS
2120     $HAVE_LIST_CMDLINE
2121     $HAVE_LIST_PUB
2122     $HEADERS_LIST
2123     $INTRINSICS_LIST
2124     $MATH_FUNCS
2125     $SYSTEM_FEATURES
2126     $SYSTEM_FUNCS
2127     $SYSTEM_LIBRARIES
2128     $THREADS_LIST
2129     $TOOLCHAIN_FEATURES
2130     $TYPES_LIST
2131     makeinfo
2132     makeinfo_html
2133     opencl_d3d11
2134     opencl_drm_arm
2135     opencl_dxva2
2136     opencl_vaapi_beignet
2137     opencl_vaapi_intel_media
2138     perl
2139     pod2man
2140     texi2html
2141 "
2142
2143 # options emitted with CONFIG_ prefix but not available on the command line
2144 CONFIG_EXTRA="
2145     aandcttables
2146     ac3dsp
2147     adts_header
2148     audio_frame_queue
2149     audiodsp
2150     blockdsp
2151     bswapdsp
2152     cabac
2153     cbs
2154     cbs_h264
2155     cbs_h265
2156     cbs_mpeg2
2157     dirac_parse
2158     dvprofile
2159     exif
2160     faandct
2161     faanidct
2162     fdctdsp
2163     flacdsp
2164     fmtconvert
2165     frame_thread_encoder
2166     g722dsp
2167     golomb
2168     gplv3
2169     h263dsp
2170     h264chroma
2171     h264dsp
2172     h264parse
2173     h264pred
2174     h264qpel
2175     hevcparse
2176     hpeldsp
2177     huffman
2178     huffyuvdsp
2179     huffyuvencdsp
2180     idctdsp
2181     iirfilter
2182     mdct15
2183     intrax8
2184     iso_media
2185     ividsp
2186     jpegtables
2187     lgplv3
2188     libx262
2189     llauddsp
2190     llviddsp
2191     llvidencdsp
2192     lpc
2193     lzf
2194     me_cmp
2195     mpeg_er
2196     mpegaudio
2197     mpegaudiodsp
2198     mpegaudioheader
2199     mpegvideo
2200     mpegvideoenc
2201     mss34dsp
2202     pixblockdsp
2203     qpeldsp
2204     qsv
2205     qsvdec
2206     qsvenc
2207     qsvvpp
2208     rangecoder
2209     riffdec
2210     riffenc
2211     rtpdec
2212     rtpenc_chain
2213     rv34dsp
2214     sinewin
2215     snappy
2216     srtp
2217     startcode
2218     texturedsp
2219     texturedspenc
2220     tpeldsp
2221     vaapi_1
2222     vaapi_encode
2223     vc1dsp
2224     videodsp
2225     vp3dsp
2226     vp56dsp
2227     vp8dsp
2228     wma_freqs
2229     wmv2dsp
2230 "
2231
2232 CMDLINE_SELECT="
2233     $ARCH_EXT_LIST
2234     $CONFIG_LIST
2235     $HAVE_LIST_CMDLINE
2236     $THREADS_LIST
2237     asm
2238     cross_compile
2239     debug
2240     extra_warnings
2241     logging
2242     lto
2243     optimizations
2244     rpath
2245     stripping
2246 "
2247
2248 PATHS_LIST="
2249     bindir
2250     datadir
2251     docdir
2252     incdir
2253     libdir
2254     mandir
2255     pkgconfigdir
2256     prefix
2257     shlibdir
2258     install_name_dir
2259 "
2260
2261 CMDLINE_SET="
2262     $PATHS_LIST
2263     ar
2264     arch
2265     as
2266     assert_level
2267     build_suffix
2268     cc
2269     objcc
2270     cpu
2271     cross_prefix
2272     custom_allocator
2273     cxx
2274     dep_cc
2275     doxygen
2276     env
2277     extra_version
2278     gas
2279     host_cc
2280     host_cflags
2281     host_extralibs
2282     host_ld
2283     host_ldflags
2284     host_os
2285     ignore_tests
2286     install
2287     ld
2288     ln_s
2289     logfile
2290     malloc_prefix
2291     nm
2292     optflags
2293     nvccflags
2294     pkg_config
2295     pkg_config_flags
2296     progs_suffix
2297     random_seed
2298     ranlib
2299     samples
2300     strip
2301     sws_max_filter_size
2302     sysinclude
2303     sysroot
2304     target_exec
2305     target_os
2306     target_path
2307     target_samples
2308     tempprefix
2309     toolchain
2310     valgrind
2311     x86asmexe
2312 "
2313
2314 CMDLINE_APPEND="
2315     extra_cflags
2316     extra_cxxflags
2317     extra_objcflags
2318     host_cppflags
2319 "
2320
2321 # code dependency declarations
2322
2323 # architecture extensions
2324
2325 armv5te_deps="arm"
2326 armv6_deps="arm"
2327 armv6t2_deps="arm"
2328 armv8_deps="aarch64"
2329 neon_deps_any="aarch64 arm"
2330 intrinsics_neon_deps="neon"
2331 vfp_deps_any="aarch64 arm"
2332 vfpv3_deps="vfp"
2333 setend_deps="arm"
2334
2335 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2336
2337 altivec_deps="ppc"
2338 dcbzl_deps="ppc"
2339 ldbrx_deps="ppc"
2340 ppc4xx_deps="ppc"
2341 vsx_deps="altivec"
2342 power8_deps="vsx"
2343
2344 loongson2_deps="mips"
2345 loongson3_deps="mips"
2346 mips32r2_deps="mips"
2347 mips32r5_deps="mips"
2348 mips32r6_deps="mips"
2349 mips64r2_deps="mips"
2350 mips64r6_deps="mips"
2351 mipsfpu_deps="mips"
2352 mipsdsp_deps="mips"
2353 mipsdspr2_deps="mips"
2354 mmi_deps="mips"
2355 msa_deps="mipsfpu"
2356
2357 cpunop_deps="i686"
2358 x86_64_select="i686"
2359 x86_64_suggest="fast_cmov"
2360
2361 amd3dnow_deps="mmx"
2362 amd3dnowext_deps="amd3dnow"
2363 i686_deps="x86"
2364 mmx_deps="x86"
2365 mmxext_deps="mmx"
2366 sse_deps="mmxext"
2367 sse2_deps="sse"
2368 sse3_deps="sse2"
2369 ssse3_deps="sse3"
2370 sse4_deps="ssse3"
2371 sse42_deps="sse4"
2372 aesni_deps="sse42"
2373 avx_deps="sse42"
2374 xop_deps="avx"
2375 fma3_deps="avx"
2376 fma4_deps="avx"
2377 avx2_deps="avx"
2378 avx512_deps="avx2"
2379
2380 mmx_external_deps="x86asm"
2381 mmx_inline_deps="inline_asm x86"
2382 mmx_suggest="mmx_external mmx_inline"
2383
2384 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2385     eval dep=\$${ext}_deps
2386     eval ${ext}_external_deps='"${dep}_external"'
2387     eval ${ext}_inline_deps='"${dep}_inline"'
2388     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2389 done
2390
2391 aligned_stack_if_any="aarch64 ppc x86"
2392 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2393 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2394 fast_unaligned_if_any="aarch64 ppc x86"
2395 simd_align_16_if_any="altivec neon sse"
2396 simd_align_32_if_any="avx"
2397 simd_align_64_if_any="avx512"
2398
2399 # system capabilities
2400 symver_if_any="symver_asm_label symver_gnu_asm"
2401 valgrind_backtrace_conflict="optimizations"
2402 valgrind_backtrace_deps="valgrind_valgrind_h"
2403
2404 # threading support
2405 atomics_gcc_if="sync_val_compare_and_swap"
2406 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2407 atomics_win32_if="MemoryBarrier"
2408 atomics_native_if_any="$ATOMICS_LIST"
2409 w32threads_deps="atomics_native"
2410 threads_if_any="$THREADS_LIST"
2411
2412 # subsystems
2413 cbs_h264_select="cbs golomb"
2414 cbs_h265_select="cbs golomb"
2415 cbs_mpeg2_select="cbs"
2416 dct_select="rdft"
2417 dirac_parse_select="golomb"
2418 error_resilience_select="me_cmp"
2419 faandct_deps="faan"
2420 faandct_select="fdctdsp"
2421 faanidct_deps="faan"
2422 faanidct_select="idctdsp"
2423 h264dsp_select="startcode"
2424 hevcparse_select="golomb"
2425 frame_thread_encoder_deps="encoders threads"
2426 intrax8_select="blockdsp idctdsp"
2427 mdct_select="fft"
2428 mdct15_select="fft"
2429 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2430 mpeg_er_select="error_resilience"
2431 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2432 mpegaudiodsp_select="dct"
2433 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2434 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2435 vc1dsp_select="h264chroma qpeldsp startcode"
2436 rdft_select="fft"
2437
2438 # decoders / encoders
2439 aac_decoder_select="adts_header mdct15 mdct sinewin"
2440 aac_fixed_decoder_select="mdct sinewin"
2441 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2442 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2443 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2444 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2445 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2446 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2447 adpcm_g722_decoder_select="g722dsp"
2448 adpcm_g722_encoder_select="g722dsp"
2449 aic_decoder_select="golomb idctdsp"
2450 alac_encoder_select="lpc"
2451 als_decoder_select="bswapdsp"
2452 amrnb_decoder_select="lsp"
2453 amrwb_decoder_select="lsp"
2454 amv_decoder_select="sp5x_decoder exif"
2455 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2456 ape_decoder_select="bswapdsp llauddsp"
2457 apng_decoder_deps="zlib"
2458 apng_encoder_deps="zlib"
2459 apng_encoder_select="llvidencdsp"
2460 aptx_decoder_select="audio_frame_queue"
2461 aptx_encoder_select="audio_frame_queue"
2462 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2463 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2464 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2465 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2466 atrac1_decoder_select="mdct sinewin"
2467 atrac3_decoder_select="mdct"
2468 atrac3p_decoder_select="mdct sinewin"
2469 avrn_decoder_select="exif jpegtables"
2470 bink_decoder_select="blockdsp hpeldsp"
2471 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2472 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2473 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2474 clearvideo_decoder_select="idctdsp"
2475 cllc_decoder_select="bswapdsp"
2476 comfortnoise_encoder_select="lpc"
2477 cook_decoder_select="audiodsp mdct sinewin"
2478 cscd_decoder_select="lzo"
2479 cscd_decoder_suggest="zlib"
2480 dca_decoder_select="mdct"
2481 dds_decoder_select="texturedsp"
2482 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2483 dnxhd_decoder_select="blockdsp idctdsp"
2484 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2485 dolby_e_decoder_select="mdct"
2486 dvvideo_decoder_select="dvprofile idctdsp"
2487 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2488 dxa_decoder_deps="zlib"
2489 dxv_decoder_select="lzf texturedsp"
2490 eac3_decoder_select="ac3_decoder"
2491 eac3_encoder_select="ac3_encoder"
2492 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2493 eatgq_decoder_select="aandcttables"
2494 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2495 exr_decoder_deps="zlib"
2496 ffv1_decoder_select="rangecoder"
2497 ffv1_encoder_select="rangecoder"
2498 ffvhuff_decoder_select="huffyuv_decoder"
2499 ffvhuff_encoder_select="huffyuv_encoder"
2500 fic_decoder_select="golomb"
2501 flac_decoder_select="flacdsp"
2502 flac_encoder_select="bswapdsp flacdsp lpc"
2503 flashsv2_decoder_deps="zlib"
2504 flashsv2_encoder_deps="zlib"
2505 flashsv_decoder_deps="zlib"
2506 flashsv_encoder_deps="zlib"
2507 flv_decoder_select="h263_decoder"
2508 flv_encoder_select="h263_encoder"
2509 fourxm_decoder_select="blockdsp bswapdsp"
2510 fraps_decoder_select="bswapdsp huffman"
2511 g2m_decoder_deps="zlib"
2512 g2m_decoder_select="blockdsp idctdsp jpegtables"
2513 g729_decoder_select="audiodsp"
2514 h261_decoder_select="mpegvideo"
2515 h261_encoder_select="aandcttables mpegvideoenc"
2516 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2517 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2518 h263i_decoder_select="h263_decoder"
2519 h263p_decoder_select="h263_decoder"
2520 h263p_encoder_select="h263_encoder"
2521 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2522 h264_decoder_suggest="error_resilience"
2523 hap_decoder_select="snappy texturedsp"
2524 hap_encoder_deps="libsnappy"
2525 hap_encoder_select="texturedspenc"
2526 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2527 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2528 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2529 iac_decoder_select="imc_decoder"
2530 imc_decoder_select="bswapdsp fft mdct sinewin"
2531 indeo3_decoder_select="hpeldsp"
2532 indeo4_decoder_select="ividsp"
2533 indeo5_decoder_select="ividsp"
2534 interplay_video_decoder_select="hpeldsp"
2535 jpegls_decoder_select="mjpeg_decoder"
2536 jv_decoder_select="blockdsp"
2537 lagarith_decoder_select="llviddsp"
2538 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2539 magicyuv_decoder_select="llviddsp"
2540 magicyuv_encoder_select="llvidencdsp"
2541 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2542 metasound_decoder_select="lsp mdct sinewin"
2543 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2544 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2545 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2546 mjpegb_decoder_select="mjpeg_decoder"
2547 mlp_decoder_select="mlp_parser"
2548 mlp_encoder_select="lpc"
2549 motionpixels_decoder_select="bswapdsp"
2550 mp1_decoder_select="mpegaudio"
2551 mp1float_decoder_select="mpegaudio"
2552 mp2_decoder_select="mpegaudio"
2553 mp2float_decoder_select="mpegaudio"
2554 mp3_decoder_select="mpegaudio"
2555 mp3adu_decoder_select="mpegaudio"
2556 mp3adufloat_decoder_select="mpegaudio"
2557 mp3float_decoder_select="mpegaudio"
2558 mp3on4_decoder_select="mpegaudio"
2559 mp3on4float_decoder_select="mpegaudio"
2560 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2561 mpc8_decoder_select="mpegaudiodsp"
2562 mpegvideo_decoder_select="mpegvideo"
2563 mpeg1video_decoder_select="mpegvideo"
2564 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2565 mpeg2video_decoder_select="mpegvideo"
2566 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2567 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2568 mpeg4_encoder_select="h263_encoder"
2569 msa1_decoder_select="mss34dsp"
2570 mscc_decoder_deps="zlib"
2571 msmpeg4v1_decoder_select="h263_decoder"
2572 msmpeg4v2_decoder_select="h263_decoder"
2573 msmpeg4v2_encoder_select="h263_encoder"
2574 msmpeg4v3_decoder_select="h263_decoder"
2575 msmpeg4v3_encoder_select="h263_encoder"
2576 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2577 mts2_decoder_select="mss34dsp"
2578 mxpeg_decoder_select="mjpeg_decoder"
2579 nellymoser_decoder_select="mdct sinewin"
2580 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2581 nuv_decoder_select="idctdsp lzo"
2582 on2avc_decoder_select="mdct"
2583 opus_decoder_deps="swresample"
2584 opus_decoder_select="mdct15"
2585 opus_encoder_select="audio_frame_queue mdct15"
2586 png_decoder_deps="zlib"
2587 png_encoder_deps="zlib"
2588 png_encoder_select="llvidencdsp"
2589 prores_decoder_select="blockdsp idctdsp"
2590 prores_encoder_select="fdctdsp"
2591 qcelp_decoder_select="lsp"
2592 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2593 ra_144_decoder_select="audiodsp"
2594 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2595 ralf_decoder_select="golomb"
2596 rawvideo_decoder_select="bswapdsp"
2597 rscc_decoder_deps="zlib"
2598 rtjpeg_decoder_select="me_cmp"
2599 rv10_decoder_select="h263_decoder"
2600 rv10_encoder_select="h263_encoder"
2601 rv20_decoder_select="h263_decoder"
2602 rv20_encoder_select="h263_encoder"
2603 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2604 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2605 screenpresso_decoder_deps="zlib"
2606 shorten_decoder_select="bswapdsp"
2607 sipr_decoder_select="lsp"
2608 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2609 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2610 sonic_decoder_select="golomb rangecoder"
2611 sonic_encoder_select="golomb rangecoder"
2612 sonic_ls_encoder_select="golomb rangecoder"
2613 sp5x_decoder_select="mjpeg_decoder"
2614 srgc_decoder_deps="zlib"
2615 svq1_decoder_select="hpeldsp"
2616 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2617 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2618 svq3_decoder_suggest="zlib"
2619 tak_decoder_select="audiodsp"
2620 tdsc_decoder_deps="zlib"
2621 tdsc_decoder_select="mjpeg_decoder"
2622 theora_decoder_select="vp3_decoder"
2623 thp_decoder_select="mjpeg_decoder"
2624 tiff_decoder_suggest="zlib lzma"
2625 tiff_encoder_suggest="zlib"
2626 truehd_decoder_select="mlp_parser"
2627 truehd_encoder_select="lpc"
2628 truemotion2_decoder_select="bswapdsp"
2629 truespeech_decoder_select="bswapdsp"
2630 tscc_decoder_deps="zlib"
2631 twinvq_decoder_select="mdct lsp sinewin"
2632 txd_decoder_select="texturedsp"
2633 utvideo_decoder_select="bswapdsp llviddsp"
2634 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2635 vble_decoder_select="llviddsp"
2636 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2637 vc1image_decoder_select="vc1_decoder"
2638 vorbis_decoder_select="mdct"
2639 vorbis_encoder_select="mdct"
2640 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2641 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2642 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2643 vp6a_decoder_select="vp6_decoder"
2644 vp6f_decoder_select="vp6_decoder"
2645 vp7_decoder_select="h264pred videodsp vp8dsp"
2646 vp8_decoder_select="h264pred videodsp vp8dsp"
2647 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2648 webp_decoder_select="vp8_decoder exif"
2649 wmalossless_decoder_select="llauddsp"
2650 wmapro_decoder_select="mdct sinewin wma_freqs"
2651 wmav1_decoder_select="mdct sinewin wma_freqs"
2652 wmav1_encoder_select="mdct sinewin wma_freqs"
2653 wmav2_decoder_select="mdct sinewin wma_freqs"
2654 wmav2_encoder_select="mdct sinewin wma_freqs"
2655 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2656 wmv1_decoder_select="h263_decoder"
2657 wmv1_encoder_select="h263_encoder"
2658 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2659 wmv2_encoder_select="h263_encoder wmv2dsp"
2660 wmv3_decoder_select="vc1_decoder"
2661 wmv3image_decoder_select="wmv3_decoder"
2662 xma1_decoder_select="wmapro_decoder"
2663 xma2_decoder_select="wmapro_decoder"
2664 zerocodec_decoder_deps="zlib"
2665 zlib_decoder_deps="zlib"
2666 zlib_encoder_deps="zlib"
2667 zmbv_decoder_deps="zlib"
2668 zmbv_encoder_deps="zlib"
2669
2670 # hardware accelerators
2671 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2672 cuda_deps_any="libdl LoadLibrary"
2673 cuvid_deps="cuda"
2674 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2675 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2676 nvdec_deps="cuda"
2677 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2678 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2679 xvmc_deps="X11_extensions_XvMClib_h"
2680
2681 h263_vaapi_hwaccel_deps="vaapi"
2682 h263_vaapi_hwaccel_select="h263_decoder"
2683 h263_videotoolbox_hwaccel_deps="videotoolbox"
2684 h263_videotoolbox_hwaccel_select="h263_decoder"
2685 h264_d3d11va_hwaccel_deps="d3d11va"
2686 h264_d3d11va_hwaccel_select="h264_decoder"
2687 h264_d3d11va2_hwaccel_deps="d3d11va"
2688 h264_d3d11va2_hwaccel_select="h264_decoder"
2689 h264_dxva2_hwaccel_deps="dxva2"
2690 h264_dxva2_hwaccel_select="h264_decoder"
2691 h264_nvdec_hwaccel_deps="nvdec"
2692 h264_nvdec_hwaccel_select="h264_decoder"
2693 h264_vaapi_hwaccel_deps="vaapi"
2694 h264_vaapi_hwaccel_select="h264_decoder"
2695 h264_vdpau_hwaccel_deps="vdpau"
2696 h264_vdpau_hwaccel_select="h264_decoder"
2697 h264_videotoolbox_hwaccel_deps="videotoolbox"
2698 h264_videotoolbox_hwaccel_select="h264_decoder"
2699 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2700 hevc_d3d11va_hwaccel_select="hevc_decoder"
2701 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2702 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2703 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2704 hevc_dxva2_hwaccel_select="hevc_decoder"
2705 hevc_nvdec_hwaccel_deps="nvdec"
2706 hevc_nvdec_hwaccel_select="hevc_decoder"
2707 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2708 hevc_vaapi_hwaccel_select="hevc_decoder"
2709 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2710 hevc_vdpau_hwaccel_select="hevc_decoder"
2711 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2712 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2713 mpeg_xvmc_hwaccel_deps="xvmc"
2714 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2715 mpeg1_nvdec_hwaccel_deps="nvdec"
2716 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2717 mpeg1_vdpau_hwaccel_deps="vdpau"
2718 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2719 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2720 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2721 mpeg1_xvmc_hwaccel_deps="xvmc"
2722 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2723 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2724 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2725 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2726 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2727 mpeg2_dxva2_hwaccel_deps="dxva2"
2728 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2729 mpeg2_nvdec_hwaccel_deps="nvdec"
2730 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2731 mpeg2_vaapi_hwaccel_deps="vaapi"
2732 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2733 mpeg2_vdpau_hwaccel_deps="vdpau"
2734 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2735 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2736 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2737 mpeg2_xvmc_hwaccel_deps="xvmc"
2738 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2739 mpeg4_nvdec_hwaccel_deps="nvdec"
2740 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2741 mpeg4_vaapi_hwaccel_deps="vaapi"
2742 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2743 mpeg4_vdpau_hwaccel_deps="vdpau"
2744 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2745 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2746 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2747 vc1_d3d11va_hwaccel_deps="d3d11va"
2748 vc1_d3d11va_hwaccel_select="vc1_decoder"
2749 vc1_d3d11va2_hwaccel_deps="d3d11va"
2750 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2751 vc1_dxva2_hwaccel_deps="dxva2"
2752 vc1_dxva2_hwaccel_select="vc1_decoder"
2753 vc1_nvdec_hwaccel_deps="nvdec"
2754 vc1_nvdec_hwaccel_select="vc1_decoder"
2755 vc1_vaapi_hwaccel_deps="vaapi"
2756 vc1_vaapi_hwaccel_select="vc1_decoder"
2757 vc1_vdpau_hwaccel_deps="vdpau"
2758 vc1_vdpau_hwaccel_select="vc1_decoder"
2759 vp8_nvdec_hwaccel_deps="nvdec"
2760 vp8_nvdec_hwaccel_select="vp8_decoder"
2761 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2762 vp8_vaapi_hwaccel_select="vp8_decoder"
2763 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2764 vp9_d3d11va_hwaccel_select="vp9_decoder"
2765 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2766 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2767 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2768 vp9_dxva2_hwaccel_select="vp9_decoder"
2769 vp9_nvdec_hwaccel_deps="nvdec"
2770 vp9_nvdec_hwaccel_select="vp9_decoder"
2771 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2772 vp9_vaapi_hwaccel_select="vp9_decoder"
2773 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2774 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2775 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2776 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2777 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2778 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2779
2780 # hardware-accelerated codecs
2781 omx_deps="libdl pthreads"
2782 omx_rpi_select="omx"
2783 qsv_deps="libmfx"
2784 qsvdec_select="qsv"
2785 qsvenc_select="qsv"
2786 qsvvpp_select="qsv"
2787 vaapi_encode_deps="vaapi"
2788 v4l2_m2m_deps_any="linux_videodev2_h"
2789
2790 hwupload_cuda_filter_deps="cuda"
2791 scale_npp_filter_deps="cuda libnpp"
2792 scale_cuda_filter_deps="cuda_sdk"
2793 thumbnail_cuda_filter_deps="cuda_sdk"
2794
2795 amf_deps_any="libdl LoadLibrary"
2796 nvenc_deps="cuda"
2797 nvenc_deps_any="libdl LoadLibrary"
2798 nvenc_encoder_deps="nvenc"
2799
2800 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2801 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2802 h264_amf_encoder_deps="amf"
2803 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2804 h264_cuvid_decoder_deps="cuvid"
2805 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2806 h264_mediacodec_decoder_deps="mediacodec"
2807 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2808 h264_mmal_decoder_deps="mmal"
2809 h264_nvenc_encoder_deps="nvenc"
2810 h264_omx_encoder_deps="omx"
2811 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2812 h264_qsv_encoder_select="qsvenc"
2813 h264_rkmpp_decoder_deps="rkmpp"
2814 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2815 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2816 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2817 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2818 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2819 hevc_amf_encoder_deps="amf"
2820 hevc_cuvid_decoder_deps="cuvid"
2821 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2822 hevc_mediacodec_decoder_deps="mediacodec"
2823 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2824 hevc_nvenc_encoder_deps="nvenc"
2825 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2826 hevc_qsv_encoder_select="hevcparse qsvenc"
2827 hevc_rkmpp_decoder_deps="rkmpp"
2828 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2829 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2830 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2831 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2832 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2833 mjpeg_cuvid_decoder_deps="cuvid"
2834 mjpeg_qsv_encoder_deps="libmfx"
2835 mjpeg_qsv_encoder_select="qsvenc"
2836 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2837 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2838 mpeg1_cuvid_decoder_deps="cuvid"
2839 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2840 mpeg2_crystalhd_decoder_select="crystalhd"
2841 mpeg2_cuvid_decoder_deps="cuvid"
2842 mpeg2_mmal_decoder_deps="mmal"
2843 mpeg2_mediacodec_decoder_deps="mediacodec"
2844 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2845 mpeg2_qsv_encoder_select="qsvenc"
2846 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2847 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2848 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2849 mpeg4_crystalhd_decoder_select="crystalhd"
2850 mpeg4_cuvid_decoder_deps="cuvid"
2851 mpeg4_mediacodec_decoder_deps="mediacodec"
2852 mpeg4_mmal_decoder_deps="mmal"
2853 mpeg4_omx_encoder_deps="omx"
2854 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2855 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2856 msmpeg4_crystalhd_decoder_select="crystalhd"
2857 nvenc_h264_encoder_select="h264_nvenc_encoder"
2858 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2859 vc1_crystalhd_decoder_select="crystalhd"
2860 vc1_cuvid_decoder_deps="cuvid"
2861 vc1_mmal_decoder_deps="mmal"
2862 vc1_qsv_decoder_select="qsvdec vc1_parser"
2863 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2864 vp8_cuvid_decoder_deps="cuvid"
2865 vp8_mediacodec_decoder_deps="mediacodec"
2866 vp8_qsv_decoder_select="qsvdec vp8_parser"
2867 vp8_rkmpp_decoder_deps="rkmpp"
2868 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2869 vp8_vaapi_encoder_select="vaapi_encode"
2870 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2871 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2872 vp9_cuvid_decoder_deps="cuvid"
2873 vp9_mediacodec_decoder_deps="mediacodec"
2874 vp9_rkmpp_decoder_deps="rkmpp"
2875 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2876 vp9_vaapi_encoder_select="vaapi_encode"
2877 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2878 wmv3_crystalhd_decoder_select="crystalhd"
2879
2880 # parsers
2881 aac_parser_select="adts_header"
2882 h264_parser_select="golomb h264dsp h264parse"
2883 hevc_parser_select="hevcparse"
2884 mpegaudio_parser_select="mpegaudioheader"
2885 mpegvideo_parser_select="mpegvideo"
2886 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2887 vc1_parser_select="vc1dsp"
2888
2889 # bitstream_filters
2890 aac_adtstoasc_bsf_select="adts_header"
2891 h264_metadata_bsf_select="cbs_h264"
2892 h264_redundant_pps_bsf_select="cbs_h264"
2893 hevc_metadata_bsf_select="cbs_h265"
2894 mjpeg2jpeg_bsf_select="jpegtables"
2895 mpeg2_metadata_bsf_select="cbs_mpeg2"
2896 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2897
2898 # external libraries
2899 aac_at_decoder_deps="audiotoolbox"
2900 aac_at_decoder_select="aac_adtstoasc_bsf"
2901 ac3_at_decoder_deps="audiotoolbox"
2902 ac3_at_decoder_select="ac3_parser"
2903 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2904 alac_at_decoder_deps="audiotoolbox"
2905 amr_nb_at_decoder_deps="audiotoolbox"
2906 avisynth_deps_any="libdl LoadLibrary"
2907 avisynth_demuxer_deps="avisynth"
2908 avisynth_demuxer_select="riffdec"
2909 eac3_at_decoder_deps="audiotoolbox"
2910 eac3_at_decoder_select="ac3_parser"
2911 gsm_ms_at_decoder_deps="audiotoolbox"
2912 ilbc_at_decoder_deps="audiotoolbox"
2913 mp1_at_decoder_deps="audiotoolbox"
2914 mp2_at_decoder_deps="audiotoolbox"
2915 mp3_at_decoder_deps="audiotoolbox"
2916 mp1_at_decoder_select="mpegaudioheader"
2917 mp2_at_decoder_select="mpegaudioheader"
2918 mp3_at_decoder_select="mpegaudioheader"
2919 pcm_alaw_at_decoder_deps="audiotoolbox"
2920 pcm_mulaw_at_decoder_deps="audiotoolbox"
2921 qdmc_at_decoder_deps="audiotoolbox"
2922 qdm2_at_decoder_deps="audiotoolbox"
2923 aac_at_encoder_deps="audiotoolbox"
2924 aac_at_encoder_select="audio_frame_queue"
2925 alac_at_encoder_deps="audiotoolbox"
2926 alac_at_encoder_select="audio_frame_queue"
2927 ilbc_at_encoder_deps="audiotoolbox"
2928 ilbc_at_encoder_select="audio_frame_queue"
2929 pcm_alaw_at_encoder_deps="audiotoolbox"
2930 pcm_alaw_at_encoder_select="audio_frame_queue"
2931 pcm_mulaw_at_encoder_deps="audiotoolbox"
2932 pcm_mulaw_at_encoder_select="audio_frame_queue"
2933 chromaprint_muxer_deps="chromaprint"
2934 h264_videotoolbox_encoder_deps="pthreads"
2935 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2936 hevc_videotoolbox_encoder_deps="pthreads"
2937 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
2938 libcelt_decoder_deps="libcelt"
2939 libfdk_aac_decoder_deps="libfdk_aac"
2940 libfdk_aac_encoder_deps="libfdk_aac"
2941 libfdk_aac_encoder_select="audio_frame_queue"
2942 libgme_demuxer_deps="libgme"
2943 libgsm_decoder_deps="libgsm"
2944 libgsm_encoder_deps="libgsm"
2945 libgsm_ms_decoder_deps="libgsm"
2946 libgsm_ms_encoder_deps="libgsm"
2947 libilbc_decoder_deps="libilbc"
2948 libilbc_encoder_deps="libilbc"
2949 libkvazaar_encoder_deps="libkvazaar"
2950 libmodplug_demuxer_deps="libmodplug"
2951 libmp3lame_encoder_deps="libmp3lame"
2952 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2953 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2954 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2955 libopencore_amrnb_encoder_select="audio_frame_queue"
2956 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2957 libopenh264_decoder_deps="libopenh264"
2958 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2959 libopenh264_encoder_deps="libopenh264"
2960 libopenjpeg_decoder_deps="libopenjpeg"
2961 libopenjpeg_encoder_deps="libopenjpeg"
2962 libopenmpt_demuxer_deps="libopenmpt"
2963 libopus_decoder_deps="libopus"
2964 libopus_encoder_deps="libopus"
2965 libopus_encoder_select="audio_frame_queue"
2966 librsvg_decoder_deps="librsvg"
2967 libshine_encoder_deps="libshine"
2968 libshine_encoder_select="audio_frame_queue"
2969 libspeex_decoder_deps="libspeex"
2970 libspeex_encoder_deps="libspeex"
2971 libspeex_encoder_select="audio_frame_queue"
2972 libtheora_encoder_deps="libtheora"
2973 libtwolame_encoder_deps="libtwolame"
2974 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2975 libvorbis_decoder_deps="libvorbis"
2976 libvorbis_encoder_deps="libvorbis libvorbisenc"
2977 libvorbis_encoder_select="audio_frame_queue"
2978 libvpx_vp8_decoder_deps="libvpx"
2979 libvpx_vp8_encoder_deps="libvpx"
2980 libvpx_vp9_decoder_deps="libvpx"
2981 libvpx_vp9_encoder_deps="libvpx"
2982 libwavpack_encoder_deps="libwavpack"
2983 libwavpack_encoder_select="audio_frame_queue"
2984 libwebp_encoder_deps="libwebp"
2985 libwebp_anim_encoder_deps="libwebp"
2986 libx262_encoder_deps="libx262"
2987 libx264_encoder_deps="libx264"
2988 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2989 libx264rgb_encoder_select="libx264_encoder"
2990 libx265_encoder_deps="libx265"
2991 libxavs_encoder_deps="libxavs"
2992 libxvid_encoder_deps="libxvid"
2993 libzvbi_teletext_decoder_deps="libzvbi"
2994 videotoolbox_suggest="coreservices"
2995 videotoolbox_deps="corefoundation coremedia corevideo"
2996 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2997
2998 # demuxers / muxers
2999 ac3_demuxer_select="ac3_parser"
3000 aiff_muxer_select="iso_media"
3001 asf_demuxer_select="riffdec"
3002 asf_o_demuxer_select="riffdec"
3003 asf_muxer_select="riffenc"
3004 asf_stream_muxer_select="asf_muxer"
3005 avi_demuxer_select="iso_media riffdec exif"
3006 avi_muxer_select="riffenc"
3007 caf_demuxer_select="iso_media riffdec"
3008 caf_muxer_select="iso_media"
3009 dash_muxer_select="mp4_muxer"
3010 dash_demuxer_deps="libxml2"
3011 dirac_demuxer_select="dirac_parser"
3012 dts_demuxer_select="dca_parser"
3013 dtshd_demuxer_select="dca_parser"
3014 dv_demuxer_select="dvprofile"
3015 dv_muxer_select="dvprofile"
3016 dxa_demuxer_select="riffdec"
3017 eac3_demuxer_select="ac3_parser"
3018 f4v_muxer_select="mov_muxer"
3019 fifo_muxer_deps="threads"
3020 flac_demuxer_select="flac_parser"
3021 hds_muxer_select="flv_muxer"
3022 hls_muxer_select="mpegts_muxer"
3023 hls_muxer_suggest="gcrypt openssl"
3024 image2_alias_pix_demuxer_select="image2_demuxer"
3025 image2_brender_pix_demuxer_select="image2_demuxer"
3026 ipod_muxer_select="mov_muxer"
3027 ismv_muxer_select="mov_muxer"
3028 matroska_audio_muxer_select="matroska_muxer"
3029 matroska_demuxer_select="iso_media riffdec"
3030 matroska_demuxer_suggest="bzlib lzo zlib"
3031 matroska_muxer_select="iso_media riffenc"
3032 mmf_muxer_select="riffenc"
3033 mov_demuxer_select="iso_media riffdec"
3034 mov_demuxer_suggest="zlib"
3035 mov_muxer_select="iso_media riffenc rtpenc_chain"
3036 mp3_demuxer_select="mpegaudio_parser"
3037 mp3_muxer_select="mpegaudioheader"
3038 mp4_muxer_select="mov_muxer"
3039 mpegts_demuxer_select="iso_media"
3040 mpegts_muxer_select="adts_muxer latm_muxer"
3041 mpegtsraw_demuxer_select="mpegts_demuxer"
3042 mxf_d10_muxer_select="mxf_muxer"
3043 mxf_opatom_muxer_select="mxf_muxer"
3044 nut_muxer_select="riffenc"
3045 nuv_demuxer_select="riffdec"
3046 oga_muxer_select="ogg_muxer"
3047 ogg_demuxer_select="dirac_parse"
3048 ogv_muxer_select="ogg_muxer"
3049 opus_muxer_select="ogg_muxer"
3050 psp_muxer_select="mov_muxer"
3051 rtp_demuxer_select="sdp_demuxer"
3052 rtp_muxer_select="golomb"
3053 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3054 rtsp_demuxer_select="http_protocol rtpdec"
3055 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3056 sap_demuxer_select="sdp_demuxer"
3057 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3058 sdp_demuxer_select="rtpdec"
3059 smoothstreaming_muxer_select="ismv_muxer"
3060 spdif_demuxer_select="adts_header"
3061 spdif_muxer_select="adts_header"
3062 spx_muxer_select="ogg_muxer"
3063 swf_demuxer_suggest="zlib"
3064 tak_demuxer_select="tak_parser"
3065 tg2_muxer_select="mov_muxer"
3066 tgp_muxer_select="mov_muxer"
3067 vobsub_demuxer_select="mpegps_demuxer"
3068 w64_demuxer_select="wav_demuxer"
3069 w64_muxer_select="wav_muxer"
3070 wav_demuxer_select="riffdec"
3071 wav_muxer_select="riffenc"
3072 webm_muxer_select="iso_media riffenc"
3073 webm_dash_manifest_demuxer_select="matroska_demuxer"
3074 wtv_demuxer_select="mpegts_demuxer riffdec"
3075 wtv_muxer_select="mpegts_muxer riffenc"
3076 xmv_demuxer_select="riffdec"
3077 xwma_demuxer_select="riffdec"
3078
3079 # indevs / outdevs
3080 alsa_indev_deps="alsa"
3081 alsa_outdev_deps="alsa"
3082 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3083 avfoundation_indev_suggest="coregraphics applicationservices"
3084 avfoundation_indev_extralibs="-framework Foundation"
3085 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3086 caca_outdev_deps="libcaca"
3087 decklink_deps_any="libdl LoadLibrary"
3088 decklink_indev_deps="decklink threads"
3089 decklink_indev_extralibs="-lstdc++"
3090 decklink_outdev_deps="decklink threads"
3091 decklink_outdev_extralibs="-lstdc++"
3092 libndi_newtek_indev_deps="libndi_newtek"
3093 libndi_newtek_indev_extralibs="-lndi"
3094 libndi_newtek_outdev_deps="libndi_newtek"
3095 libndi_newtek_outdev_extralibs="-lndi"
3096 dshow_indev_deps="IBaseFilter"
3097 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3098 fbdev_indev_deps="linux_fb_h"
3099 fbdev_outdev_deps="linux_fb_h"
3100 gdigrab_indev_deps="CreateDIBSection"
3101 gdigrab_indev_extralibs="-lgdi32"
3102 gdigrab_indev_select="bmp_decoder"
3103 iec61883_indev_deps="libiec61883"
3104 jack_indev_deps="libjack"
3105 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3106 kmsgrab_indev_deps="libdrm"
3107 lavfi_indev_deps="avfilter"
3108 libcdio_indev_deps="libcdio"
3109 libdc1394_indev_deps="libdc1394"
3110 openal_indev_deps="openal"
3111 opengl_outdev_deps="opengl"
3112 oss_indev_deps_any="sys_soundcard_h"
3113 oss_outdev_deps_any="sys_soundcard_h"
3114 pulse_indev_deps="libpulse"
3115 pulse_outdev_deps="libpulse"
3116 sdl2_outdev_deps="sdl2"
3117 sndio_indev_deps="sndio"
3118 sndio_outdev_deps="sndio"
3119 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3120 v4l2_indev_suggest="libv4l2"
3121 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3122 v4l2_outdev_suggest="libv4l2"
3123 vfwcap_indev_deps="vfw32 vfwcap_defines"
3124 xcbgrab_indev_deps="libxcb"
3125 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3126 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3127 xv_outdev_extralibs="-lXv -lX11 -lXext"
3128
3129 # protocols
3130 async_protocol_deps="threads"
3131 bluray_protocol_deps="libbluray"
3132 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3133 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3134 ffrtmpcrypt_protocol_select="tcp_protocol"
3135 ffrtmphttp_protocol_conflict="librtmp_protocol"
3136 ffrtmphttp_protocol_select="http_protocol"
3137 ftp_protocol_select="tcp_protocol"
3138 gopher_protocol_select="network"
3139 http_protocol_select="tcp_protocol"
3140 http_protocol_suggest="zlib"
3141 httpproxy_protocol_select="tcp_protocol"
3142 httpproxy_protocol_suggest="zlib"
3143 https_protocol_select="tls_protocol"
3144 https_protocol_suggest="zlib"
3145 icecast_protocol_select="http_protocol"
3146 librtmp_protocol_deps="librtmp"
3147 librtmpe_protocol_deps="librtmp"
3148 librtmps_protocol_deps="librtmp"
3149 librtmpt_protocol_deps="librtmp"
3150 librtmpte_protocol_deps="librtmp"
3151 libsmbclient_protocol_deps="libsmbclient gplv3"
3152 libssh_protocol_deps="libssh"
3153 libtls_conflict="openssl gnutls"
3154 mmsh_protocol_select="http_protocol"
3155 mmst_protocol_select="network"
3156 rtmp_protocol_conflict="librtmp_protocol"
3157 rtmp_protocol_select="tcp_protocol"
3158 rtmp_protocol_suggest="zlib"
3159 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3160 rtmpe_protocol_suggest="zlib"
3161 rtmps_protocol_conflict="librtmp_protocol"
3162 rtmps_protocol_select="tls_protocol"
3163 rtmps_protocol_suggest="zlib"
3164 rtmpt_protocol_select="ffrtmphttp_protocol"
3165 rtmpt_protocol_suggest="zlib"
3166 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3167 rtmpte_protocol_suggest="zlib"
3168 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3169 rtmpts_protocol_suggest="zlib"
3170 rtp_protocol_select="udp_protocol"
3171 schannel_conflict="openssl gnutls libtls"
3172 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3173 sctp_protocol_select="network"
3174 securetransport_conflict="openssl gnutls libtls"
3175 srtp_protocol_select="rtp_protocol srtp"
3176 tcp_protocol_select="network"
3177 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls"
3178 tls_protocol_select="tcp_protocol"
3179 udp_protocol_select="network"
3180 udplite_protocol_select="network"
3181 unix_protocol_deps="sys_un_h"
3182 unix_protocol_select="network"
3183
3184 # filters
3185 afftfilt_filter_deps="avcodec"
3186 afftfilt_filter_select="fft"
3187 afir_filter_deps="avcodec"
3188 afir_filter_select="fft"
3189 amovie_filter_deps="avcodec avformat"
3190 aresample_filter_deps="swresample"
3191 ass_filter_deps="libass"
3192 atempo_filter_deps="avcodec"
3193 atempo_filter_select="rdft"
3194 azmq_filter_deps="libzmq"
3195 blackframe_filter_deps="gpl"
3196 boxblur_filter_deps="gpl"
3197 bs2b_filter_deps="libbs2b"
3198 colormatrix_filter_deps="gpl"
3199 convolve_filter_deps="avcodec"
3200 convolve_filter_select="fft"
3201 coreimage_filter_deps="coreimage appkit"
3202 coreimage_filter_extralibs="-framework OpenGL"
3203 coreimagesrc_filter_deps="coreimage appkit"
3204 coreimagesrc_filter_extralibs="-framework OpenGL"
3205 cover_rect_filter_deps="avcodec avformat gpl"
3206 cropdetect_filter_deps="gpl"
3207 deconvolve_filter_deps="avcodec"
3208 deconvolve_filter_select="fft"
3209 deinterlace_qsv_filter_deps="libmfx"
3210 deinterlace_vaapi_filter_deps="vaapi"
3211 delogo_filter_deps="gpl"
3212 deshake_filter_select="pixelutils"
3213 drawtext_filter_deps="libfreetype"
3214 drawtext_filter_suggest="libfontconfig libfribidi"
3215 elbg_filter_deps="avcodec"
3216 eq_filter_deps="gpl"
3217 fftfilt_filter_deps="avcodec"
3218 fftfilt_filter_select="rdft"
3219 find_rect_filter_deps="avcodec avformat gpl"
3220 firequalizer_filter_deps="avcodec"
3221 firequalizer_filter_select="rdft"
3222 flite_filter_deps="libflite"
3223 framerate_filter_select="pixelutils"
3224 frei0r_filter_deps="frei0r libdl"
3225 frei0r_src_filter_deps="frei0r libdl"
3226 fspp_filter_deps="gpl"
3227 geq_filter_deps="gpl"
3228 histeq_filter_deps="gpl"
3229 hqdn3d_filter_deps="gpl"
3230 interlace_filter_deps="gpl"
3231 kerndeint_filter_deps="gpl"
3232 ladspa_filter_deps="ladspa libdl"
3233 lv2_filter_deps="lv2"
3234 mcdeint_filter_deps="avcodec gpl"
3235 movie_filter_deps="avcodec avformat"
3236 mpdecimate_filter_deps="gpl"
3237 mpdecimate_filter_select="pixelutils"
3238 mptestsrc_filter_deps="gpl"
3239 negate_filter_deps="lut_filter"
3240 nnedi_filter_deps="gpl"
3241 ocr_filter_deps="libtesseract"
3242 ocv_filter_deps="libopencv"
3243 overlay_opencl_filter_deps="opencl"
3244 overlay_qsv_filter_deps="libmfx"
3245 overlay_qsv_filter_select="qsvvpp"
3246 owdenoise_filter_deps="gpl"
3247 pan_filter_deps="swresample"
3248 perspective_filter_deps="gpl"
3249 phase_filter_deps="gpl"
3250 pp7_filter_deps="gpl"
3251 pp_filter_deps="gpl postproc"
3252 pullup_filter_deps="gpl"
3253 removelogo_filter_deps="avcodec avformat swscale"
3254 repeatfields_filter_deps="gpl"
3255 resample_filter_deps="avresample"
3256 rubberband_filter_deps="librubberband"
3257 sab_filter_deps="gpl swscale"
3258 scale2ref_filter_deps="swscale"
3259 scale_filter_deps="swscale"
3260 scale_qsv_filter_deps="libmfx"
3261 select_filter_select="pixelutils"
3262 showcqt_filter_deps="avcodec avformat swscale"
3263 showcqt_filter_suggest="libfontconfig libfreetype"
3264 showcqt_filter_select="fft"
3265 showfreqs_filter_deps="avcodec"
3266 showfreqs_filter_select="fft"
3267 showspectrum_filter_deps="avcodec"
3268 showspectrum_filter_select="fft"
3269 showspectrumpic_filter_deps="avcodec"
3270 showspectrumpic_filter_select="fft"
3271 signature_filter_deps="gpl avcodec avformat"
3272 smartblur_filter_deps="gpl swscale"
3273 sofalizer_filter_deps="libmysofa avcodec"
3274 sofalizer_filter_select="fft"
3275 spectrumsynth_filter_deps="avcodec"
3276 spectrumsynth_filter_select="fft"
3277 spp_filter_deps="gpl avcodec"
3278 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3279 stereo3d_filter_deps="gpl"
3280 subtitles_filter_deps="avformat avcodec libass"
3281 super2xsai_filter_deps="gpl"
3282 pixfmts_super2xsai_test_deps="super2xsai_filter"
3283 tinterlace_filter_deps="gpl"
3284 tinterlace_merge_test_deps="tinterlace_filter"
3285 tinterlace_pad_test_deps="tinterlace_filter"
3286 tonemap_filter_deps="const_nan"
3287 unsharp_opencl_filter_deps="opencl"
3288 uspp_filter_deps="gpl avcodec"
3289 vaguedenoiser_filter_deps="gpl"
3290 vidstabdetect_filter_deps="libvidstab"
3291 vidstabtransform_filter_deps="libvidstab"
3292 libvmaf_filter_deps="libvmaf pthreads"
3293 zmq_filter_deps="libzmq"
3294 zoompan_filter_deps="swscale"
3295 zscale_filter_deps="libzimg const_nan"
3296 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3297 vpp_qsv_filter_deps="libmfx"
3298 vpp_qsv_filter_select="qsvvpp"
3299
3300 # examples
3301 avio_dir_cmd_deps="avformat avutil"
3302 avio_reading_deps="avformat avcodec avutil"
3303 decode_audio_example_deps="avcodec avutil"
3304 decode_video_example_deps="avcodec avutil"
3305 demuxing_decoding_example_deps="avcodec avformat avutil"
3306 encode_audio_example_deps="avcodec avutil"
3307 encode_video_example_deps="avcodec avutil"
3308 extract_mvs_example_deps="avcodec avformat avutil"
3309 filter_audio_example_deps="avfilter avutil"
3310 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3311 filtering_video_example_deps="avfilter avcodec avformat avutil"
3312 http_multiclient_example_deps="avformat avutil fork"
3313 hw_decode_example_deps="avcodec avformat avutil"
3314 metadata_example_deps="avformat avutil"
3315 muxing_example_deps="avcodec avformat avutil swscale"
3316 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3317 remuxing_example_deps="avcodec avformat avutil"
3318 resampling_audio_example_deps="avutil swresample"
3319 scaling_video_example_deps="avutil swscale"
3320 transcode_aac_example_deps="avcodec avformat swresample"
3321 transcoding_example_deps="avfilter avcodec avformat avutil"
3322 vaapi_encode_example_deps="avcodec avutil"
3323
3324 # EXTRALIBS_LIST
3325 cpu_init_extralibs="pthreads_extralibs"
3326 cws2fws_extralibs="zlib_extralibs"
3327
3328 # libraries, in linking order
3329 avcodec_deps="avutil"
3330 avcodec_suggest="libm"
3331 avcodec_select="null_bsf"
3332 avdevice_deps="avformat avcodec avutil"
3333 avdevice_suggest="libm"
3334 avfilter_deps="avutil"
3335 avfilter_suggest="libm"
3336 avformat_deps="avcodec avutil"
3337 avformat_suggest="libm network zlib"
3338 avresample_deps="avutil"
3339 avresample_suggest="libm"
3340 avutil_suggest="clock_gettime cuda libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3341 postproc_deps="avutil gpl"
3342 postproc_suggest="libm"
3343 swresample_deps="avutil"
3344 swresample_suggest="libm libsoxr"
3345 swscale_deps="avutil"
3346 swscale_suggest="libm"
3347
3348 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3349 avfilter_extralibs="pthreads_extralibs"
3350 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3351
3352 # programs
3353 ffmpeg_deps="avcodec avfilter avformat swresample"
3354 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3355                null_filter
3356                trim_filter"
3357 ffmpeg_suggest="ole32 psapi shell32"
3358 ffplay_deps="avcodec avformat swscale swresample sdl2"
3359 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3360 ffplay_suggest="shell32"
3361 ffprobe_deps="avcodec avformat"
3362 ffprobe_suggest="shell32"
3363 ffserver_deps="avformat fork sarestart"
3364 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3365
3366 # documentation
3367 podpages_deps="perl"
3368 manpages_deps="perl pod2man"
3369 htmlpages_deps="perl"
3370 htmlpages_deps_any="makeinfo_html texi2html"
3371 txtpages_deps="perl makeinfo"
3372 doc_deps_any="manpages htmlpages podpages txtpages"
3373
3374 # default parameters
3375
3376 logfile="ffbuild/config.log"
3377
3378 # installation paths
3379 prefix_default="/usr/local"
3380 bindir_default='${prefix}/bin'
3381 datadir_default='${prefix}/share/ffmpeg'
3382 docdir_default='${prefix}/share/doc/ffmpeg'
3383 incdir_default='${prefix}/include'
3384 libdir_default='${prefix}/lib'
3385 mandir_default='${prefix}/share/man'
3386
3387 # toolchain
3388 ar_default="ar"
3389 cc_default="gcc"
3390 cxx_default="g++"
3391 host_cc_default="gcc"
3392 doxygen_default="doxygen"
3393 install="install"
3394 ln_s_default="ln -s -f"
3395 nm_default="nm -g"
3396 pkg_config_default=pkg-config
3397 ranlib_default="ranlib"
3398 strip_default="strip"
3399 version_script='--version-script'
3400 objformat="elf32"
3401 x86asmexe_default="nasm"
3402 windres_default="windres"
3403 nvcc_default="nvcc"
3404 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3405 striptype="direct"
3406
3407 # OS
3408 target_os_default=$(tolower $(uname -s))
3409 host_os=$target_os_default
3410
3411 # machine
3412 if test "$target_os_default" = aix; then
3413     arch_default=$(uname -p)
3414     strip_default="strip -X32_64"
3415 else
3416     arch_default=$(uname -m)
3417 fi
3418 cpu="generic"
3419 intrinsics="none"
3420
3421 # configurable options
3422 enable $PROGRAM_LIST
3423 enable $DOCUMENT_LIST
3424 enable $EXAMPLE_LIST
3425 enable $(filter_out avresample $LIBRARY_LIST)
3426 enable stripping
3427
3428 enable asm
3429 enable debug
3430 enable doc
3431 enable faan faandct faanidct
3432 enable optimizations
3433 enable runtime_cpudetect
3434 enable safe_bitstream_reader
3435 enable static
3436 enable swscale_alpha
3437 enable valgrind_backtrace
3438
3439 sws_max_filter_size_default=256
3440 set_default sws_max_filter_size
3441
3442 # internal components are enabled by default
3443 enable $EXTRALIBS_LIST
3444
3445 # Avoid external, non-system, libraries getting enabled by dependency resolution
3446 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3447
3448 # build settings
3449 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3450 LIBPREF="lib"
3451 LIBSUF=".a"
3452 FULLNAME='$(NAME)$(BUILDSUF)'
3453 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3454 SLIBPREF="lib"
3455 SLIBSUF=".so"
3456 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3457 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3458 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3459 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3460 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3461 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3462 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3463
3464 asflags_filter=echo
3465 cflags_filter=echo
3466 ldflags_filter=echo
3467
3468 AS_C='-c'
3469 AS_O='-o $@'
3470 CC_C='-c'
3471 CC_E='-E -o $@'
3472 CC_O='-o $@'
3473 CXX_C='-c'
3474 CXX_O='-o $@'
3475 OBJCC_C='-c'
3476 OBJCC_E='-E -o $@'
3477 OBJCC_O='-o $@'
3478 X86ASM_O='-o $@'
3479 LD_O='-o $@'
3480 LD_LIB='-l%'
3481 LD_PATH='-L'
3482 HOSTCC_C='-c'
3483 HOSTCC_E='-E -o $@'
3484 HOSTCC_O='-o $@'
3485 HOSTLD_O='-o $@'
3486 NVCC_C='-c'
3487 NVCC_O='-o $@'
3488
3489 host_extralibs='-lm'
3490 host_cflags_filter=echo
3491 host_ldflags_filter=echo
3492
3493 target_path='$(CURDIR)'
3494
3495 # since the object filename is not given with the -MM flag, the compiler
3496 # is only able to print the basename, and we must add the path ourselves
3497 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3498 DEPFLAGS='-MM'
3499
3500 mkdir -p ffbuild
3501
3502 # find source path
3503 if test -f configure; then
3504     source_path=.
3505 else
3506     source_path=$(cd $(dirname "$0"); pwd)
3507     case "$source_path" in
3508         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3509     esac
3510     test -e "$source_path/config.h" &&
3511         die "Out of tree builds are impossible with config.h in source dir."
3512 fi
3513
3514 for v in "$@"; do
3515     r=${v#*=}
3516     l=${v%"$r"}
3517     r=$(sh_quote "$r")
3518     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3519 done
3520
3521 find_things(){
3522     thing=$1
3523     pattern=$2
3524     file=$source_path/$3
3525     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3526 }
3527
3528 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3529 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3530 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3531 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3532 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3533 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3534 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3535 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3536
3537 find_things_extern(){
3538     thing=$1
3539     pattern=$2
3540     file=$source_path/$3
3541     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3542 }
3543
3544 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3545 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3546 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3547
3548 AVCODEC_COMPONENTS_LIST="
3549     $BSF_LIST
3550     $DECODER_LIST
3551     $ENCODER_LIST
3552     $HWACCEL_LIST
3553     $PARSER_LIST
3554 "
3555
3556 AVDEVICE_COMPONENTS_LIST="
3557     $INDEV_LIST
3558     $OUTDEV_LIST
3559 "
3560
3561 AVFILTER_COMPONENTS_LIST="
3562     $FILTER_LIST
3563 "
3564
3565 AVFORMAT_COMPONENTS_LIST="
3566     $DEMUXER_LIST
3567     $MUXER_LIST
3568     $PROTOCOL_LIST
3569 "
3570
3571 ALL_COMPONENTS="
3572     $AVCODEC_COMPONENTS_LIST
3573     $AVDEVICE_COMPONENTS_LIST
3574     $AVFILTER_COMPONENTS_LIST
3575     $AVFORMAT_COMPONENTS_LIST
3576 "
3577
3578 for n in $COMPONENT_LIST; do
3579     v=$(toupper ${n%s})_LIST
3580     eval enable \$$v
3581     eval ${n}_if_any="\$$v"
3582 done
3583
3584 enable $ARCH_EXT_LIST
3585
3586 die_unknown(){
3587     echo "Unknown option \"$1\"."
3588     echo "See $0 --help for available options."
3589     exit 1
3590 }
3591
3592 print_in_columns() {
3593     cols=$(expr $ncols / 24)
3594     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3595 }
3596
3597 show_list() {
3598     suffix=_$1
3599     shift
3600     echo $* | sed s/$suffix//g | print_in_columns
3601     exit 0
3602 }
3603
3604 rand_list(){
3605     IFS=', '
3606     set -- $*
3607     unset IFS
3608     for thing; do
3609         comp=${thing%:*}
3610         prob=${thing#$comp}
3611         prob=${prob#:}
3612         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3613         echo "prob ${prob:-0.5}"
3614         printf '%s\n' $comp
3615     done
3616 }
3617
3618 do_random(){
3619     action=$1
3620     shift
3621     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3622     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3623 }
3624
3625 for opt do
3626     optval="${opt#*=}"
3627     case "$opt" in
3628         --extra-ldflags=*)
3629             add_ldflags $optval
3630         ;;
3631         --extra-ldexeflags=*)
3632             add_ldexeflags $optval
3633         ;;
3634         --extra-ldsoflags=*)
3635             add_ldsoflags $optval
3636         ;;
3637         --extra-ldlibflags=*)
3638             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3639                  "removed in the future. Use --extra-ldsoflags instead."
3640             add_ldsoflags $optval
3641         ;;
3642         --extra-libs=*)
3643             add_extralibs $optval
3644         ;;
3645         --disable-devices)
3646             disable $INDEV_LIST $OUTDEV_LIST
3647         ;;
3648         --enable-debug=*)
3649             debuglevel="$optval"
3650         ;;
3651         --disable-programs)
3652             disable $PROGRAM_LIST
3653         ;;
3654         --disable-everything)
3655             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3656         ;;
3657         --disable-all)
3658             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3659             disable $LIBRARY_LIST $PROGRAM_LIST doc
3660             enable avutil
3661         ;;
3662         --enable-random|--disable-random)
3663             action=${opt%%-random}
3664             do_random ${action#--} $COMPONENT_LIST
3665         ;;
3666         --enable-random=*|--disable-random=*)
3667             action=${opt%%-random=*}
3668             do_random ${action#--} $optval
3669         ;;
3670         --enable-sdl)
3671             enable sdl2
3672         ;;
3673         --enable-*=*|--disable-*=*)
3674             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3675             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3676             eval list=\$$(toupper $thing)_LIST
3677             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3678             list=$(filter "$name" $list)
3679             [ "$list" = "" ] && warn "Option $opt did not match anything"
3680             $action $list
3681         ;;
3682         --enable-yasm|--disable-yasm)
3683             warn "The ${opt} option is only provided for compatibility and will be\n"\
3684                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3685             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3686         ;;
3687         --yasmexe=*)
3688             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3689                  "removed in the future. Use --x86asmexe instead."
3690             x86asmexe="$optval"
3691         ;;
3692         --enable-?*|--disable-?*)
3693             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3694             if is_in $option $COMPONENT_LIST; then
3695                 test $action = disable && action=unset
3696                 eval $action \$$(toupper ${option%s})_LIST
3697             elif is_in $option $CMDLINE_SELECT; then
3698                 $action $option
3699             else
3700                 die_unknown $opt
3701             fi
3702         ;;
3703         --list-*)
3704             NAME="${opt#--list-}"
3705             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3706             NAME=${NAME%s}
3707             eval show_list $NAME \$$(toupper $NAME)_LIST
3708         ;;
3709         --help|-h) show_help
3710         ;;
3711         --quiet|-q) quiet=yes
3712         ;;
3713         --fatal-warnings) enable fatal_warnings
3714         ;;
3715         --libfuzzer=*)
3716             libfuzzer_path="$optval"
3717         ;;
3718         *)
3719             optname="${opt%%=*}"
3720             optname="${optname#--}"
3721             optname=$(echo "$optname" | sed 's/-/_/g')
3722             if is_in $optname $CMDLINE_SET; then
3723                 eval $optname='$optval'
3724             elif is_in $optname $CMDLINE_APPEND; then
3725                 append $optname "$optval"
3726             else
3727                 die_unknown $opt
3728             fi
3729         ;;
3730     esac
3731 done
3732
3733 for e in $env; do
3734     eval "export $e"
3735 done
3736
3737 if disabled autodetect; then
3738
3739     # Unless iconv is explicitely disabled by the user, we still want to probe
3740     # for the iconv from the libc.
3741     disabled iconv || enable libc_iconv
3742
3743     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3744     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3745 fi
3746 # Mark specifically enabled, but normally autodetected libraries as requested.
3747 for lib in $AUTODETECT_LIBS; do
3748     enabled $lib && request $lib
3749 done
3750 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3751 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3752 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3753
3754 disabled logging && logfile=/dev/null
3755
3756 # command line configuration sanity checks
3757
3758 # we need to build at least one lib type
3759 if ! enabled_any static shared; then
3760     cat <<EOF
3761 At least one library type must be built.
3762 Specify --enable-static to build the static libraries or --enable-shared to
3763 build the shared libraries as well. To only build the shared libraries specify
3764 --disable-static in addition to --enable-shared.
3765 EOF
3766     exit 1
3767 fi
3768
3769 die_license_disabled() {
3770     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3771 }
3772
3773 die_license_disabled_gpl() {
3774     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3775 }
3776
3777 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3778 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3779
3780 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3781 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3782
3783 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3784
3785 enabled_all gnutls openssl &&
3786     die "GnuTLS and OpenSSL must not be enabled at the same time."
3787
3788 # Disable all the library-specific components if the library itself
3789 # is disabled, see AVCODEC_LIST and following _LIST variables.
3790
3791 disable_components(){
3792     disabled ${1} && disable $(
3793         eval components="\$$(toupper ${1})_COMPONENTS"
3794         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3795     )
3796 }
3797
3798 map 'disable_components $v' $LIBRARY_LIST
3799
3800 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3801 set >> $logfile
3802
3803 test -n "$valgrind" && toolchain="valgrind-memcheck"
3804
3805 enabled ossfuzz && {
3806     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3807     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3808 }
3809
3810 case "$toolchain" in
3811     *-asan)
3812         cc_default="${toolchain%-asan}"
3813         add_cflags  -fsanitize=address
3814         add_ldflags -fsanitize=address
3815     ;;
3816     *-msan)
3817         cc_default="${toolchain%-msan}"
3818         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3819         add_ldflags -fsanitize=memory
3820     ;;
3821     *-tsan)
3822         cc_default="${toolchain%-tsan}"
3823         add_cflags  -fsanitize=thread -fPIE
3824         add_ldflags -fsanitize=thread -pie
3825         case "$toolchain" in
3826             gcc-tsan)
3827                 add_cflags  -fPIC
3828                 add_ldflags -fPIC
3829                 ;;
3830         esac
3831     ;;
3832     *-usan)
3833         cc_default="${toolchain%-usan}"
3834         add_cflags  -fsanitize=undefined
3835         add_ldflags -fsanitize=undefined
3836     ;;
3837     valgrind-*)
3838         target_exec_default="valgrind"
3839         case "$toolchain" in
3840             valgrind-massif)
3841                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3842                 ;;
3843             valgrind-memcheck)
3844                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3845                 ;;
3846         esac
3847     ;;
3848     msvc)
3849         # Check whether the current MSVC version needs the C99 converter.
3850         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3851         # support enough of C99 to build ffmpeg. Default to the new
3852         # behaviour if the regexp was unable to match anything, since this
3853         # successfully parses the version number of existing supported
3854         # versions that require the converter (MSVC 2010 and 2012).
3855         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3856         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3857             cc_default="cl"
3858             cxx_default="cl"
3859         else
3860             cc_default="c99wrap cl"
3861             cxx_default="c99wrap cl"
3862         fi
3863         ld_default="$source_path/compat/windows/mslink"
3864         nm_default="dumpbin -symbols"
3865         ar_default="lib"
3866         case "$arch" in
3867         aarch64|arm64)
3868             as_default="armasm64"
3869             ;;
3870         arm*)
3871             as_default="armasm"
3872             ;;
3873         esac
3874         target_os_default="win32"
3875         # Use a relative path for TMPDIR. This makes sure all the
3876         # ffconf temp files are written with a relative path, avoiding
3877         # issues with msys/win32 path conversion for MSVC parameters
3878         # such as -Fo<file> or -out:<file>.
3879         TMPDIR=.
3880     ;;
3881     icl)
3882         cc_default="icl"
3883         ld_default="xilink"
3884         nm_default="dumpbin -symbols"
3885         ar_default="xilib"
3886         target_os_default="win32"
3887         TMPDIR=.
3888     ;;
3889     gcov)
3890         add_cflags  -fprofile-arcs -ftest-coverage
3891         add_ldflags -fprofile-arcs -ftest-coverage
3892     ;;
3893     llvm-cov)
3894         add_cflags -fprofile-arcs -ftest-coverage
3895         add_ldflags --coverage
3896     ;;
3897     hardened)
3898         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3899         add_cflags   -fno-strict-overflow -fstack-protector-all
3900         add_ldflags  -Wl,-z,relro -Wl,-z,now
3901         add_cflags   -fPIE
3902         add_ldexeflags -fPIE -pie
3903     ;;
3904     ?*)
3905         die "Unknown toolchain $toolchain"
3906     ;;
3907 esac
3908
3909 if test -n "$cross_prefix"; then
3910     test -n "$arch" && test -n "$target_os" ||
3911         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3912     enable cross_compile
3913 fi
3914
3915 ar_default="${cross_prefix}${ar_default}"
3916 cc_default="${cross_prefix}${cc_default}"
3917 cxx_default="${cross_prefix}${cxx_default}"
3918 nm_default="${cross_prefix}${nm_default}"
3919 pkg_config_default="${cross_prefix}${pkg_config_default}"
3920 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3921     ranlib_default="${cross_prefix}${ranlib_default} -D"
3922 else
3923     ranlib_default="${cross_prefix}${ranlib_default}"
3924 fi
3925 strip_default="${cross_prefix}${strip_default}"
3926 windres_default="${cross_prefix}${windres_default}"
3927
3928 sysinclude_default="${sysroot}/usr/include"
3929
3930 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3931     target_exec target_os x86asmexe nvcc
3932 enabled cross_compile || host_cc_default=$cc
3933 set_default host_cc
3934
3935 pkg_config_fail_message=""
3936 if ! $pkg_config --version >/dev/null 2>&1; then
3937     warn "$pkg_config not found, library detection may fail."
3938     pkg_config=false
3939 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3940     pkg_config_fail_message="
3941 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3942 fi
3943
3944 if test $doxygen != $doxygen_default && \
3945   ! $doxygen --version >/dev/null 2>&1; then
3946     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3947 fi
3948
3949 exesuf() {
3950     case $1 in
3951         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3952     esac
3953 }
3954
3955 EXESUF=$(exesuf $target_os)
3956 HOSTEXESUF=$(exesuf $host_os)
3957
3958 # set temporary file name
3959 : ${TMPDIR:=$TEMPDIR}
3960 : ${TMPDIR:=$TMP}
3961 : ${TMPDIR:=/tmp}
3962
3963 if [ -n "$tempprefix" ] ; then
3964     mktemp(){
3965         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3966         echo "$tmpname"
3967         mkdir "$tmpname"
3968     }
3969 elif ! check_cmd mktemp -u XXXXXX; then
3970     # simple replacement for missing mktemp
3971     # NOT SAFE FOR GENERAL USE
3972     mktemp(){
3973         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3974         echo "$tmpname"
3975         mkdir "$tmpname"
3976     }
3977 fi
3978
3979 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3980     die "Unable to create temporary directory in $TMPDIR."
3981
3982 tmpfile(){
3983     tmp="${FFTMPDIR}/test"$2
3984     (set -C; exec > $tmp) 2> /dev/null ||
3985         die "Unable to create temporary file in $FFTMPDIR."
3986     eval $1=$tmp
3987 }
3988
3989 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3990 trap 'exit 2' INT
3991
3992 tmpfile TMPASM .asm
3993 tmpfile TMPC   .c
3994 tmpfile TMPCPP .cpp
3995 tmpfile TMPE   $EXESUF
3996 tmpfile TMPH   .h
3997 tmpfile TMPM   .m
3998 tmpfile TMPO   .o
3999 tmpfile TMPS   .S
4000 tmpfile TMPSH  .sh
4001 tmpfile TMPV   .ver
4002
4003 unset -f mktemp
4004
4005 chmod +x $TMPE
4006
4007 # make sure we can execute files in $TMPDIR
4008 cat > $TMPSH 2>> $logfile <<EOF
4009 #! /bin/sh
4010 EOF
4011 chmod +x $TMPSH >> $logfile 2>&1
4012 if ! $TMPSH >> $logfile 2>&1; then
4013     cat <<EOF
4014 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4015 variable to another directory and make sure that it is not mounted noexec.
4016 EOF
4017     die "Sanity test failed."
4018 fi
4019
4020 armasm_flags(){
4021     for flag; do
4022         case $flag in
4023             # Filter out MSVC cl.exe options from cflags that shouldn't
4024             # be passed to gas-preprocessor
4025             -M[TD]*)                                            ;;
4026             *)                  echo $flag                      ;;
4027         esac
4028    done
4029 }
4030
4031 cparser_flags(){
4032     for flag; do
4033         case $flag in
4034             -Wno-switch)             echo -Wno-switch-enum ;;
4035             -Wno-format-zero-length) ;;
4036             -Wdisabled-optimization) ;;
4037             -Wno-pointer-sign)       echo -Wno-other ;;
4038             *)                       echo $flag ;;
4039         esac
4040     done
4041 }
4042
4043 msvc_common_flags(){
4044     for flag; do
4045         case $flag in
4046             # In addition to specifying certain flags under the compiler
4047             # specific filters, they must be specified here as well or else the
4048             # generic catch all at the bottom will print the original flag.
4049             -Wall)                ;;
4050             -Wextra)              ;;
4051             -std=c99)             ;;
4052             # Common flags
4053             -fomit-frame-pointer) ;;
4054             -g)                   echo -Z7 ;;
4055             -fno-math-errno)      ;;
4056             -fno-common)          ;;
4057             -fno-signed-zeros)    ;;
4058             -fPIC)                ;;
4059             -mthumb)              ;;
4060             -march=*)             ;;
4061             -lz)                  echo zlib.lib ;;
4062             -lx264)               echo libx264.lib ;;
4063             -lstdc++)             ;;
4064             -l*)                  echo ${flag#-l}.lib ;;
4065             -LARGEADDRESSAWARE)   echo $flag ;;
4066             -L*)                  echo -libpath:${flag#-L} ;;
4067             *)                    echo $flag ;;
4068         esac
4069     done
4070 }
4071
4072 msvc_flags(){
4073     msvc_common_flags "$@"
4074     for flag; do
4075         case $flag in
4076             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4077                                        -wd4554 ;;
4078             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4079                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4080                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4081                                        -wd4307 \
4082                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4083         esac
4084     done
4085 }
4086
4087 icl_flags(){
4088     msvc_common_flags "$@"
4089     for flag; do
4090         case $flag in
4091             # Despite what Intel's documentation says -Wall, which is supported
4092             # on Windows, does enable remarks so disable them here.
4093             -Wall)                echo $flag -Qdiag-disable:remark ;;
4094             -std=c99)             echo -Qstd=c99 ;;
4095             -flto)                echo -ipo ;;
4096         esac
4097     done
4098 }
4099
4100 icc_flags(){
4101     for flag; do
4102         case $flag in
4103             -flto)                echo -ipo ;;
4104             *)                    echo $flag ;;
4105         esac
4106     done
4107 }
4108
4109 suncc_flags(){
4110     for flag; do
4111         case $flag in
4112             -march=*|-mcpu=*)
4113                 case "${flag#*=}" in
4114                     native)                   echo -xtarget=native       ;;
4115                     v9|niagara)               echo -xarch=sparc          ;;
4116                     ultrasparc)               echo -xarch=sparcvis       ;;
4117                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4118                     i586|pentium)             echo -xchip=pentium        ;;
4119                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4120                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4121                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4122                     pentium4*)          echo -xtarget=pentium4           ;;
4123                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4124                     *-sse3)             echo -xarch=sse3                 ;;
4125                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4126                     bonnell)                   echo -xarch=ssse3         ;;
4127                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4128                     westmere)                  echo -xtarget=westmere    ;;
4129                     silvermont)                echo -xarch=sse4_2        ;;
4130                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4131                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4132                                                echo -xarch=avx           ;;
4133                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4134                     btver1)                    echo -xarch=amdsse4a      ;;
4135                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4136                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4137                     k8|opteron|athlon64|athlon-fx)
4138                                                echo -xarch=sse2a         ;;
4139                     athlon*)                   echo -xarch=pentium_proa  ;;
4140                 esac
4141                 ;;
4142             -std=c99)             echo -xc99              ;;
4143             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4144             -fPIC)                echo -KPIC -xcode=pic32 ;;
4145             -W*,*)                echo $flag              ;;
4146             -f*-*|-W*|-mimpure-text)                      ;;
4147             -shared)              echo -G                 ;;
4148             *)                    echo $flag              ;;
4149         esac
4150     done
4151 }
4152
4153 probe_cc(){
4154     pfx=$1
4155     _cc=$2
4156     first=$3
4157
4158     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4159     unset _ld_o _ldflags _ld_lib _ld_path
4160     unset _depflags _DEPCMD _DEPFLAGS
4161     _flags_filter=echo
4162
4163     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4164         true # no-op to avoid reading stdin in following checks
4165     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4166         _type=llvm_gcc
4167         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4168         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4169         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4170         _cflags_speed='-O3'
4171         _cflags_size='-Os'
4172     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4173         _type=gcc
4174         gcc_version=$($_cc --version | head -n1)
4175         gcc_basever=$($_cc -dumpversion)
4176         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4177         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4178         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4179         case $gcc_basever in
4180             2) ;;
4181             2.*) ;;
4182             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4183         esac
4184         if [ "$first" = true ]; then
4185             case $gcc_basever in
4186                 4.2*)
4187                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4188             esac
4189         fi
4190         _cflags_speed='-O3'
4191         _cflags_size='-Os'
4192     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4193         _type=icc
4194         _ident=$($_cc --version | head -n1)
4195         _depflags='-MMD'
4196         _cflags_speed='-O3'
4197         _cflags_size='-Os'
4198         _cflags_noopt='-O1'
4199         _flags_filter=icc_flags
4200     elif $_cc -v 2>&1 | grep -q xlc; then
4201         _type=xlc
4202         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4203         _cflags_speed='-O5'
4204         _cflags_size='-O5 -qcompact'
4205     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4206         test -d "$sysroot" || die "No valid sysroot specified."
4207         _type=armcc
4208         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4209         armcc_conf="$PWD/armcc.conf"
4210         $_cc --arm_linux_configure                 \
4211              --arm_linux_config_file="$armcc_conf" \
4212              --configure_sysroot="$sysroot"        \
4213              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4214              die "Error creating armcc configuration file."
4215         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4216         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4217         as_default="${cross_prefix}gcc"
4218         _depflags='-MMD'
4219         _cflags_speed='-O3'
4220         _cflags_size='-Os'
4221     elif $_cc -v 2>&1 | grep -q clang; then
4222         _type=clang
4223         _ident=$($_cc --version 2>/dev/null | head -n1)
4224         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4225         _cflags_speed='-O3'
4226         _cflags_size='-Oz'
4227     elif $_cc -V 2>&1 | grep -q Sun; then
4228         _type=suncc
4229         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4230         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4231         _DEPFLAGS='-xM1 -xc99'
4232         _ldflags='-std=c99'
4233         _cflags_speed='-O5'
4234         _cflags_size='-O5 -xspace'
4235         _flags_filter=suncc_flags
4236     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4237         _type=pathscale
4238         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4239         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4240         _cflags_speed='-O2'
4241         _cflags_size='-Os'
4242         _flags_filter='filter_out -Wdisabled-optimization'
4243     elif $_cc -v 2>&1 | grep -q Open64; then
4244         _type=open64
4245         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4246         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4247         _cflags_speed='-O2'
4248         _cflags_size='-Os'
4249         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4250     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4251         _type=armasm
4252         _ident=$($_cc | head -n1)
4253         # 4509: "This form of conditional instruction is deprecated"
4254         _flags="-nologo -ignore 4509"
4255         _flags_filter=armasm_flags
4256     elif $_cc 2>&1 | grep -q Intel; then
4257         _type=icl
4258         _ident=$($_cc 2>&1 | head -n1)
4259         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4260         # Not only is O3 broken on 13.x+ but it is slower on all previous
4261         # versions (tested) as well.
4262         _cflags_speed="-O2"
4263         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4264         if $_cc 2>&1 | grep -q Linker; then
4265             _ld_o='-out:$@'
4266         else
4267             _ld_o='-Fe$@'
4268         fi
4269         _cc_o='-Fo$@'
4270         _cc_e='-P'
4271         _flags_filter=icl_flags
4272         _ld_lib='lib%.a'
4273         _ld_path='-libpath:'
4274         # -Qdiag-error to make icl error when seeing certain unknown arguments
4275         _flags='-nologo -Qdiag-error:4044,10157'
4276         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4277         # with MSVC which enables it by default.
4278         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4279         disable stripping
4280     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4281         # lld can emulate multiple different linkers; in ms link.exe mode,
4282         # the -? parameter gives the help output which contains an identifyable
4283         # string, while it gives an error in other modes.
4284         _type=lld-link
4285         # The link.exe mode doesn't have a switch for getting the version,
4286         # but we can force it back to gnu mode and get the version from there.
4287         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4288         _ld_o='-out:$@'
4289         _flags_filter=msvc_flags
4290         _ld_lib='lib%.a'
4291         _ld_path='-libpath:'
4292     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4293         _type=msvc
4294         _ident=$($_cc 2>&1 | head -n1)
4295         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4296         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4297         _cflags_speed="-O2"
4298         _cflags_size="-O1"
4299         _cflags_noopt="-O1"
4300         if $_cc -nologo- 2>&1 | grep -q Linker; then
4301             _ld_o='-out:$@'
4302         else
4303             _ld_o='-Fe$@'
4304         fi
4305         _cc_o='-Fo$@'
4306         _cc_e='-P -Fi$@'
4307         _flags_filter=msvc_flags
4308         _ld_lib='lib%.a'
4309         _ld_path='-libpath:'
4310         _flags='-nologo'
4311         disable stripping
4312     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4313         _type=cparser
4314         _ident=$($_cc --version | head -n1)
4315         _depflags='-MMD'
4316         _cflags_speed='-O4'
4317         _cflags_size='-O2'
4318         _flags_filter=cparser_flags
4319     fi
4320
4321     eval ${pfx}_type=\$_type
4322     eval ${pfx}_ident=\$_ident
4323 }
4324
4325 set_ccvars(){
4326     eval ${1}_C=\${_cc_c-\${${1}_C}}
4327     eval ${1}_E=\${_cc_e-\${${1}_E}}
4328     eval ${1}_O=\${_cc_o-\${${1}_O}}
4329
4330     if [ -n "$_depflags" ]; then
4331         eval ${1}_DEPFLAGS=\$_depflags
4332     else
4333         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4334         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4335         eval DEP${1}FLAGS=\$_flags
4336     fi
4337 }
4338
4339 probe_cc cc "$cc" "true"
4340 cflags_filter=$_flags_filter
4341 cflags_speed=$_cflags_speed
4342 cflags_size=$_cflags_size
4343 cflags_noopt=$_cflags_noopt
4344 add_cflags $_flags $_cflags
4345 cc_ldflags=$_ldflags
4346 set_ccvars CC
4347 set_ccvars CXX
4348
4349 probe_cc hostcc "$host_cc"
4350 host_cflags_filter=$_flags_filter
4351 host_cflags_speed=$_cflags_speed
4352 add_host_cflags  $_flags $_cflags
4353 set_ccvars HOSTCC
4354
4355 test -n "$cc_type" && enable $cc_type ||
4356     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4357
4358 : ${as_default:=$cc}
4359 : ${objcc_default:=$cc}
4360 : ${dep_cc_default:=$cc}
4361 : ${ld_default:=$cc}
4362 : ${host_ld_default:=$host_cc}
4363 set_default ar as objcc dep_cc ld ln_s host_ld windres
4364
4365 probe_cc as "$as"
4366 asflags_filter=$_flags_filter
4367 add_asflags $_flags $_cflags
4368 set_ccvars AS
4369
4370 probe_cc objcc "$objcc"
4371 objcflags_filter=$_flags_filter
4372 add_objcflags $_flags $_cflags
4373 set_ccvars OBJC
4374
4375 probe_cc ld "$ld"
4376 ldflags_filter=$_flags_filter
4377 add_ldflags $_flags $_ldflags
4378 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4379 LD_O=${_ld_o-$LD_O}
4380 LD_LIB=${_ld_lib-$LD_LIB}
4381 LD_PATH=${_ld_path-$LD_PATH}
4382
4383 probe_cc hostld "$host_ld"
4384 host_ldflags_filter=$_flags_filter
4385 add_host_ldflags $_flags $_ldflags
4386 HOSTLD_O=${_ld_o-$HOSTLD_O}
4387
4388 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4389     probe_cc depcc "$dep_cc"
4390     CCDEP=${_DEPCMD:-$DEPCMD}
4391     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4392     DEPCCFLAGS=$_flags
4393 fi
4394
4395 if $ar 2>&1 | grep -q Microsoft; then
4396     arflags="-nologo"
4397     ar_o='-out:$@'
4398 elif $ar 2>&1 | grep -q "\[D\] "; then
4399     arflags="rcD"
4400     ar_o='$@'
4401 else
4402     arflags="rc"
4403     ar_o='$@'
4404 fi
4405
4406 add_cflags $extra_cflags
4407 add_cxxflags $extra_cxxflags
4408 add_objcflags $extra_objcflags
4409 add_asflags $extra_cflags
4410
4411 if test -n "$sysroot"; then
4412     case "$cc_type" in
4413         gcc|llvm_gcc|clang)
4414             add_cppflags --sysroot="$sysroot"
4415             add_ldflags --sysroot="$sysroot"
4416         ;;
4417     esac
4418 fi
4419
4420 if test "$cpu" = host; then
4421     enabled cross_compile &&
4422         die "--cpu=host makes no sense when cross-compiling."
4423
4424     case "$cc_type" in
4425         gcc|llvm_gcc)
4426             check_native(){
4427                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4428                 sed -n "/cc1.*$1=/{
4429                             s/.*$1=\\([^ ]*\\).*/\\1/
4430                             p
4431                             q
4432                         }" $TMPE
4433             }
4434             cpu=$(check_native -march || check_native -mcpu)
4435         ;;
4436         clang)
4437             check_native(){
4438                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4439                 sed -n "/cc1.*-target-cpu /{
4440                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4441                             p
4442                             q
4443                         }" $TMPE
4444             }
4445             cpu=$(check_native -march)
4446         ;;
4447     esac
4448
4449     test "${cpu:-host}" = host &&
4450         die "--cpu=host not supported with compiler $cc"
4451 fi
4452
4453 # Deal with common $arch aliases
4454 case "$arch" in
4455     aarch64|arm64)
4456         arch="aarch64"
4457     ;;
4458     arm*|iPad*|iPhone*)
4459         arch="arm"
4460     ;;
4461     mips*|IP*)
4462         case "$arch" in
4463         *el)
4464             add_cppflags -EL
4465             add_ldflags -EL
4466         ;;
4467         *eb)
4468             add_cppflags -EB
4469             add_ldflags -EB
4470         ;;
4471         esac
4472         arch="mips"
4473     ;;
4474     parisc*|hppa*)
4475         arch="parisc"
4476     ;;
4477     "Power Macintosh"|ppc*|powerpc*)
4478         arch="ppc"
4479     ;;
4480     s390|s390x)
4481         arch="s390"
4482     ;;
4483     sh4|sh)
4484         arch="sh4"
4485     ;;
4486     sun4*|sparc*)
4487         arch="sparc"
4488     ;;
4489     tilegx|tile-gx)
4490         arch="tilegx"
4491     ;;
4492     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4493         arch="x86"
4494     ;;
4495 esac
4496
4497 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4498 enable $arch
4499
4500 # Add processor-specific flags
4501 if enabled aarch64; then
4502
4503     case $cpu in
4504         armv*)
4505             cpuflags="-march=$cpu"
4506         ;;
4507         *)
4508             cpuflags="-mcpu=$cpu"
4509         ;;
4510     esac
4511
4512 elif enabled alpha; then
4513
4514     cpuflags="-mcpu=$cpu"
4515
4516 elif enabled arm; then
4517
4518     check_arm_arch() {
4519         check_cpp_condition stddef.h \
4520             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4521             $cpuflags
4522     }
4523
4524     probe_arm_arch() {
4525         if   check_arm_arch 4;        then echo armv4
4526         elif check_arm_arch 4T;       then echo armv4t
4527         elif check_arm_arch 5;        then echo armv5
4528         elif check_arm_arch 5E;       then echo armv5e
4529         elif check_arm_arch 5T;       then echo armv5t
4530         elif check_arm_arch 5TE;      then echo armv5te
4531         elif check_arm_arch 5TEJ;     then echo armv5te
4532         elif check_arm_arch 6;        then echo armv6
4533         elif check_arm_arch 6J;       then echo armv6j
4534         elif check_arm_arch 6K;       then echo armv6k
4535         elif check_arm_arch 6Z;       then echo armv6z
4536         elif check_arm_arch 6KZ;      then echo armv6zk
4537         elif check_arm_arch 6ZK;      then echo armv6zk
4538         elif check_arm_arch 6T2;      then echo armv6t2
4539         elif check_arm_arch 7;        then echo armv7
4540         elif check_arm_arch 7A  7_A;  then echo armv7-a
4541         elif check_arm_arch 7S;       then echo armv7-a
4542         elif check_arm_arch 7R  7_R;  then echo armv7-r
4543         elif check_arm_arch 7M  7_M;  then echo armv7-m
4544         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4545         elif check_arm_arch 8A  8_A;  then echo armv8-a
4546         fi
4547     }
4548
4549     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4550
4551     case $cpu in
4552         armv*)
4553             cpuflags="-march=$cpu"
4554             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4555         ;;
4556         *)
4557             cpuflags="-mcpu=$cpu"
4558             case $cpu in
4559                 cortex-a*)                               subarch=armv7a  ;;
4560                 cortex-r*)                               subarch=armv7r  ;;
4561                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4562                 arm11*)                                  subarch=armv6   ;;
4563                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4564                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4565                 *)                             subarch=$(probe_arm_arch) ;;
4566             esac
4567         ;;
4568     esac
4569
4570     case "$subarch" in
4571         armv5t*)    enable fast_clz                ;;
4572         armv[6-8]*)
4573             enable fast_clz
4574             disabled fast_unaligned || enable fast_unaligned
4575             ;;
4576     esac
4577
4578 elif enabled avr32; then
4579
4580     case $cpu in
4581         ap7[02]0[0-2])
4582             subarch="avr32_ap"
4583             cpuflags="-mpart=$cpu"
4584         ;;
4585         ap)
4586             subarch="avr32_ap"
4587             cpuflags="-march=$cpu"
4588         ;;
4589         uc3[ab]*)
4590             subarch="avr32_uc"
4591             cpuflags="-mcpu=$cpu"
4592         ;;
4593         uc)
4594             subarch="avr32_uc"
4595             cpuflags="-march=$cpu"
4596         ;;
4597     esac
4598
4599 elif enabled bfin; then
4600
4601     cpuflags="-mcpu=$cpu"
4602
4603 elif enabled mips; then
4604
4605     cpuflags="-march=$cpu"
4606
4607     if [ "$cpu" != "generic" ]; then
4608         disable mips32r2
4609         disable mips32r5
4610         disable mips64r2
4611         disable mips32r6
4612         disable mips64r6
4613         disable loongson2
4614         disable loongson3
4615
4616         case $cpu in
4617             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4618                 enable mips32r2
4619                 disable msa
4620             ;;
4621             p5600|i6400|p6600)
4622                 disable mipsdsp
4623                 disable mipsdspr2
4624             ;;
4625             loongson*)
4626                 enable loongson2
4627                 enable loongson3
4628                 enable local_aligned
4629                 enable simd_align_16
4630                 enable fast_64bit
4631                 enable fast_clz
4632                 enable fast_cmov
4633                 enable fast_unaligned
4634                 disable aligned_stack
4635                 disable mipsfpu
4636                 disable mipsdsp
4637                 disable mipsdspr2
4638                 case $cpu in
4639                     loongson3*)
4640                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4641                     ;;
4642                     loongson2e)
4643                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4644                     ;;
4645                     loongson2f)
4646                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4647                     ;;
4648                 esac
4649             ;;
4650             *)
4651                 # Unknown CPU. Disable everything.
4652                 warn "unknown CPU. Disabling all MIPS optimizations."
4653                 disable mipsfpu
4654                 disable mipsdsp
4655                 disable mipsdspr2
4656                 disable msa
4657                 disable mmi
4658             ;;
4659         esac
4660
4661         case $cpu in
4662             24kc)
4663                 disable mipsfpu
4664                 disable mipsdsp
4665                 disable mipsdspr2
4666             ;;
4667             24kf*)
4668                 disable mipsdsp
4669                 disable mipsdspr2
4670             ;;
4671             24kec|34kc|1004kc)
4672                 disable mipsfpu
4673                 disable mipsdspr2
4674             ;;
4675             24kef*|34kf*|1004kf*)
4676                 disable mipsdspr2
4677             ;;
4678             74kc)
4679                 disable mipsfpu
4680             ;;
4681             p5600)
4682                 enable mips32r5
4683                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4684             ;;
4685             i6400)
4686                 enable mips64r6
4687                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4688             ;;
4689             p6600)
4690                 enable mips64r6
4691                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4692             ;;
4693         esac
4694     else
4695         # We do not disable anything. Is up to the user to disable the unwanted features.
4696         warn 'generic cpu selected'
4697     fi
4698
4699 elif enabled ppc; then
4700
4701     disable ldbrx
4702
4703     case $(tolower $cpu) in
4704         601|ppc601|powerpc601)
4705             cpuflags="-mcpu=601"
4706             disable altivec
4707         ;;
4708         603*|ppc603*|powerpc603*)
4709             cpuflags="-mcpu=603"
4710             disable altivec
4711         ;;
4712         604*|ppc604*|powerpc604*)
4713             cpuflags="-mcpu=604"
4714             disable altivec
4715         ;;
4716         g3|75*|ppc75*|powerpc75*)
4717             cpuflags="-mcpu=750"
4718             disable altivec
4719         ;;
4720         g4|745*|ppc745*|powerpc745*)
4721             cpuflags="-mcpu=7450"
4722             disable vsx
4723         ;;
4724         74*|ppc74*|powerpc74*)
4725             cpuflags="-mcpu=7400"
4726             disable vsx
4727         ;;
4728         g5|970|ppc970|powerpc970)
4729             cpuflags="-mcpu=970"
4730             disable vsx
4731         ;;
4732         power[3-6]*)
4733             cpuflags="-mcpu=$cpu"
4734             disable vsx
4735         ;;
4736         power[7-8]*)
4737             cpuflags="-mcpu=$cpu"
4738         ;;
4739         cell)
4740             cpuflags="-mcpu=cell"
4741             enable ldbrx
4742             disable vsx
4743         ;;
4744         e500mc)
4745             cpuflags="-mcpu=e500mc"
4746             disable altivec
4747         ;;
4748         e500v2)
4749             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4750             disable altivec
4751             disable dcbzl
4752         ;;
4753         e500)
4754             cpuflags="-mcpu=8540 -mhard-float"
4755             disable altivec
4756             disable dcbzl
4757         ;;
4758     esac
4759
4760 elif enabled sparc; then
4761
4762     case $cpu in
4763         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4764             cpuflags="-mcpu=$cpu"
4765         ;;
4766         ultrasparc*|niagara[234])
4767             cpuflags="-mcpu=$cpu"
4768         ;;
4769     esac
4770
4771 elif enabled x86; then
4772
4773     case $cpu in
4774         i[345]86|pentium)
4775             cpuflags="-march=$cpu"
4776             disable i686
4777             disable mmx
4778         ;;
4779         # targets that do NOT support nopl and conditional mov (cmov)
4780         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4781             cpuflags="-march=$cpu"
4782             disable i686
4783         ;;
4784         # targets that do support nopl and conditional mov (cmov)
4785         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4786         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4787         |amdfam10|barcelona|b[dt]ver*|znver*)
4788             cpuflags="-march=$cpu"
4789             enable i686
4790             enable fast_cmov
4791         ;;
4792         # targets that do support conditional mov but on which it's slow
4793         pentium4|pentium4m|prescott|nocona)
4794             cpuflags="-march=$cpu"
4795             enable i686
4796             disable fast_cmov
4797         ;;
4798     esac
4799
4800 fi
4801
4802 if [ "$cpu" != generic ]; then
4803     add_cflags  $cpuflags
4804     add_asflags $cpuflags
4805     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4806 fi
4807
4808 # compiler sanity check
4809 check_exec <<EOF
4810 int main(void){ return 0; }
4811 EOF
4812 if test "$?" != 0; then
4813     echo "$cc is unable to create an executable file."
4814     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4815         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4816         echo "Only do this if you know what cross compiling means."
4817     fi
4818     die "C compiler test failed."
4819 fi
4820
4821 add_cppflags -D_ISOC99_SOURCE
4822 add_cxxflags -D__STDC_CONSTANT_MACROS
4823 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4824
4825 # some compilers silently accept -std=c11, so we also need to check that the
4826 # version macro is defined properly
4827 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4828     add_cflags -std=c11 ||
4829     check_cflags -std=c99
4830
4831 check_cppflags -D_FILE_OFFSET_BITS=64
4832 check_cppflags -D_LARGEFILE_SOURCE
4833
4834 add_host_cppflags -D_ISOC99_SOURCE
4835 check_host_cflags -std=c99
4836 check_host_cflags -Wall
4837 check_host_cflags $host_cflags_speed
4838
4839 check_64bit(){
4840     arch32=$1
4841     arch64=$2
4842     expr=$3
4843     check_code cc "" "int test[2*($expr) - 1]" &&
4844         subarch=$arch64 || subarch=$arch32
4845     enable $subarch
4846 }
4847
4848 case "$arch" in
4849     aarch64|alpha|ia64)
4850         enabled shared && enable_weak pic
4851     ;;
4852     mips)
4853         check_64bit mips mips64 '_MIPS_SIM > 1'
4854         enabled shared && enable_weak pic
4855     ;;
4856     parisc)
4857         check_64bit parisc parisc64 'sizeof(void *) > 4'
4858         enabled shared && enable_weak pic
4859     ;;
4860     ppc)
4861         check_64bit ppc ppc64 'sizeof(void *) > 4'
4862         enabled shared && enable_weak pic
4863     ;;
4864     s390)
4865         check_64bit s390 s390x 'sizeof(void *) > 4'
4866         enabled shared && enable_weak pic
4867     ;;
4868     sparc)
4869         check_64bit sparc sparc64 'sizeof(void *) > 4'
4870         enabled shared && enable_weak pic
4871     ;;
4872     x86)
4873         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4874         # Treat x32 as x64 for now. Note it also needs pic if shared
4875         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4876             subarch=x86_64 && enable x86_64 && disable x86_32
4877         if enabled x86_64; then
4878             enabled shared && enable_weak pic
4879             objformat=elf64
4880         fi
4881     ;;
4882 esac
4883
4884 # OS specific
4885 case $target_os in
4886     aix)
4887         SHFLAGS=-shared
4888         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4889         enabled shared && add_ldflags -Wl,-brtl
4890         arflags='-Xany -r -c'
4891         ;;
4892     android)
4893         disable symver
4894         enable section_data_rel_ro
4895         SLIB_INSTALL_NAME='$(SLIBNAME)'
4896         SLIB_INSTALL_LINKS=
4897         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4898         ;;
4899     haiku)
4900         prefix_default="/boot/common"
4901         network_extralibs="-lnetwork"
4902         host_extralibs=
4903         ;;
4904     sunos)
4905         SHFLAGS='-shared -Wl,-h,$$(@F)'
4906         enabled x86 && append SHFLAGS -mimpure-text
4907         network_extralibs="-lsocket -lnsl"
4908         add_cppflags -D__EXTENSIONS__
4909         # When using suncc to build, the Solaris linker will mark
4910         # an executable with each instruction set encountered by
4911         # the Solaris assembler.  As our libraries contain their own
4912         # guards for processor-specific code, instead suppress
4913         # generation of the HWCAPS ELF section on Solaris x86 only.
4914         enabled_all suncc x86 &&
4915             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4916             add_ldflags -Wl,-M,mapfile
4917         nm_default='nm -P -g'
4918         version_script='-M'
4919         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4920         ;;
4921     netbsd)
4922         disable symver
4923         oss_indev_extralibs="-lossaudio"
4924         oss_outdev_extralibs="-lossaudio"
4925         enabled gcc || check_ldflags -Wl,-zmuldefs
4926         ;;
4927     openbsd|bitrig)
4928         disable symver
4929         SHFLAGS='-shared'
4930         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4931         SLIB_INSTALL_LINKS=
4932         oss_indev_extralibs="-lossaudio"
4933         oss_outdev_extralibs="-lossaudio"
4934         ;;
4935     dragonfly)
4936         disable symver
4937         ;;
4938     freebsd)
4939         ;;
4940     bsd/os)
4941         add_extralibs -lpoll -lgnugetopt
4942         strip="strip -d"
4943         ;;
4944     darwin)
4945         enabled ppc && add_asflags -force_cpusubtype_ALL
4946         install_name_dir_default='$(SHLIBDIR)'
4947         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4948         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4949         strip="${strip} -x"
4950         add_ldflags -Wl,-dynamic,-search_paths_first
4951         check_cflags -Werror=partial-availability
4952         SLIBSUF=".dylib"
4953         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4954         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4955         enabled x86_64 && objformat="macho64" || objformat="macho32"
4956         enabled_any pic shared x86_64 ||
4957             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4958         check_header dispatch/dispatch.h &&
4959             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4960         if test -n "$sysroot"; then
4961             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
4962             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
4963         fi
4964         version_script='-exported_symbols_list'
4965         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4966         ;;
4967     msys*)
4968         die "Native MSYS builds are discouraged, please use the MINGW environment."
4969         ;;
4970     mingw32*|mingw64*)
4971         target_os=mingw32
4972         if enabled shared; then
4973             # Cannot build both shared and static libs when using dllimport.
4974             disable static
4975         fi
4976         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4977         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4978         shlibdir_default="$bindir_default"
4979         SLIBPREF=""
4980         SLIBSUF=".dll"
4981         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4982         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4983         SLIB_EXTRA_CMD='cp $(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4984         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4985         SLIB_INSTALL_LINKS=
4986         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4987         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4988         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4989         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
4990         enabled x86_64 && objformat="win64" || objformat="win32"
4991         ranlib=:
4992         enable dos_paths
4993         check_ldflags -Wl,--nxcompat,--dynamicbase
4994         # Lets work around some stupidity in binutils.
4995         # ld will strip relocations from executables even though we need them
4996         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4997         # however ld then forgets what the entry point should be (oops) so we
4998         # have to manually (re)set it.
4999         if enabled x86_32; then
5000             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5001         elif enabled x86_64; then
5002             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5003             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5004             # Set image base >4GB for extra entropy with HEASLR
5005             add_ldexeflags -Wl,--image-base,0x140000000
5006             append SHFLAGS -Wl,--image-base,0x180000000
5007         fi
5008         ;;
5009     win32|win64)
5010         disable symver
5011         if enabled shared; then
5012             # Link to the import library instead of the normal static library
5013             # for shared libs.
5014             LD_LIB='%.lib'
5015             # Cannot build both shared and static libs with MSVC or icl.
5016             disable static
5017         fi
5018         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5019         shlibdir_default="$bindir_default"
5020         SLIBPREF=""
5021         SLIBSUF=".dll"
5022         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5023         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5024         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5025         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5026         SLIB_INSTALL_LINKS=
5027         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5028         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5029         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5030         enabled x86_64 && objformat="win64" || objformat="win32"
5031         ranlib=:
5032         enable dos_paths
5033         ;;
5034     cygwin*)
5035         target_os=cygwin
5036         shlibdir_default="$bindir_default"
5037         SLIBPREF="cyg"
5038         SLIBSUF=".dll"
5039         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5040         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5041         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5042         SLIB_INSTALL_LINKS=
5043         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5044         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5045         enabled x86_64 && objformat="win64" || objformat="win32"
5046         enable dos_paths
5047         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5048         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5049         ;;
5050     *-dos|freedos|opendos)
5051         network_extralibs="-lsocket"
5052         objformat="coff"
5053         enable dos_paths
5054         add_cppflags -U__STRICT_ANSI__
5055         ;;
5056     linux)
5057         enable section_data_rel_ro
5058         enabled_any arm aarch64 && enable_weak linux_perf
5059         ;;
5060     irix*)
5061         target_os=irix
5062         ranlib="echo ignoring ranlib"
5063         ;;
5064     os/2*)
5065         strip="lxlite -CS"
5066         striptype=""
5067         objformat="aout"
5068         add_cppflags -D_GNU_SOURCE
5069         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5070         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5071         LIBSUF="_s.a"
5072         SLIBPREF=""
5073         SLIBSUF=".dll"
5074         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5075         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5076         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5077             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5078             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5079             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5080             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5081         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5082             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5083         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5084         SLIB_INSTALL_LINKS=
5085         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5086         enable dos_paths
5087         enable_weak os2threads
5088         ;;
5089     gnu/kfreebsd)
5090         add_cppflags -D_BSD_SOURCE
5091         ;;
5092     gnu)
5093         ;;
5094     qnx)
5095         add_cppflags -D_QNX_SOURCE
5096         network_extralibs="-lsocket"
5097         ;;
5098     symbian)
5099         SLIBSUF=".dll"
5100         enable dos_paths
5101         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5102         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5103         add_ldflags -Wl,--target1-abs,--no-undefined \
5104                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5105                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5106         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5107                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5108                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5109         ;;
5110     minix)
5111         ;;
5112     none)
5113         ;;
5114     *)
5115         die "Unknown OS '$target_os'."
5116         ;;
5117 esac
5118
5119 # test if creating links works
5120 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5121 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5122 mkdir "$link_dest"
5123 $ln_s "$link_dest" "$link_name"
5124 touch "$link_dest/test_file"
5125 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5126     # create link to source path
5127     [ -e src ] && rm src
5128     $ln_s "$source_path" src
5129     source_link=src
5130 else
5131     # creating directory links doesn't work
5132     # fall back to using the full source path
5133     source_link="$source_path"
5134 fi
5135 # cleanup
5136 rm -r "$link_dest"
5137 rm -r "$link_name"
5138
5139 # determine libc flavour
5140
5141 probe_libc(){
5142     pfx=$1
5143     pfx_no_=${pfx%_}
5144     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5145     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5146         eval ${pfx}libc_type=uclibc
5147         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5148     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5149         eval ${pfx}libc_type=glibc
5150         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5151     # MinGW headers can be installed on Cygwin, so check for newlib first.
5152     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5153         eval ${pfx}libc_type=newlib
5154         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5155     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5156     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5157         eval ${pfx}libc_type=mingw64
5158         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5159             add_compat msvcrt/snprintf.o
5160             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5161         fi
5162         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5163         eval test \$${pfx_no_}cc_type = "gcc" &&
5164             add_${pfx}cppflags -D__printf__=__gnu_printf__
5165         check_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5166             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5167     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5168          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5169         eval ${pfx}libc_type=mingw32
5170         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5171             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5172             die "ERROR: MinGW32 runtime version must be >= 3.15."
5173         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5174         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5175             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5176         check_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5177             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5178         eval test \$${pfx_no_}cc_type = "gcc" &&
5179             add_${pfx}cppflags -D__printf__=__gnu_printf__
5180     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5181         eval ${pfx}libc_type=msvcrt
5182         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5183             if [ "$pfx" = host_ ]; then
5184                 add_host_cppflags -Dsnprintf=_snprintf
5185             else
5186                 add_compat strtod.o strtod=avpriv_strtod
5187                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5188                                              _snprintf=avpriv_snprintf  \
5189                                              vsnprintf=avpriv_vsnprintf
5190             fi
5191         fi
5192         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5193         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5194         # 0x601 by default unless something else is set by the user.
5195         # This can easily lead to us detecting functions only present
5196         # in such new versions and producing binaries requiring windows 7.0.
5197         # Therefore explicitly set the default to Vista unless the user has
5198         # set something else on the command line.
5199         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5200         # family. For these cases, configure is free to use any functions
5201         # found in the SDK headers by default. (Alternatively, we could force
5202         # _WIN32_WINNT to 0x0602 in that case.)
5203         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5204             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5205 #ifdef WINAPI_FAMILY
5206 #include <winapifamily.h>
5207 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5208 #error not desktop
5209 #endif
5210 #endif
5211 EOF
5212         if [ "$pfx" = "" ]; then
5213             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5214             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5215         fi
5216     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5217         eval ${pfx}libc_type=klibc
5218     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5219         eval ${pfx}libc_type=bionic
5220     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5221         eval ${pfx}libc_type=solaris
5222         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5223     fi
5224     check_${pfx}cc <<EOF
5225 #include <time.h>
5226 void *v = localtime_r;
5227 EOF
5228 test "$?" != 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
5229 #include <time.h>
5230 void *v = localtime_r;
5231 EOF
5232
5233     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5234 }
5235
5236 probe_libc
5237 probe_libc host_
5238
5239 # hacks for compiler/libc/os combinations
5240
5241 case $libc_type in
5242     bionic)
5243         add_compat strtod.o strtod=avpriv_strtod
5244         ;;
5245 esac
5246
5247 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5248     add_cppflags '-I\$(SRC_PATH)/compat/float'
5249
5250 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5251
5252 set_default libdir
5253 : ${shlibdir_default:="$libdir"}
5254 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5255
5256 set_default $PATHS_LIST
5257 set_default nm
5258
5259 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5260
5261 enable_weak_pic() {
5262     disabled pic && return
5263     enable pic
5264     add_cppflags -DPIC
5265     case "$target_os" in
5266     mingw*|cygwin*|win*)
5267         ;;
5268     *)
5269         add_cflags -fPIC
5270         add_asflags -fPIC
5271         ;;
5272     esac
5273 }
5274
5275 enabled pic && enable_weak_pic
5276
5277 check_cc <<EOF || die "Symbol mangling check failed."
5278 int ff_extern;
5279 EOF
5280 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5281 extern_prefix=${sym%%ff_extern*}
5282
5283 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5284
5285 _restrict=
5286 for restrict_keyword in restrict __restrict__ __restrict; do
5287     check_cc <<EOF && _restrict=$restrict_keyword && break
5288 void foo(char * $restrict_keyword p);
5289 EOF
5290 done
5291
5292 check_cc <<EOF && enable pragma_deprecated
5293 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5294 EOF
5295
5296 check_cc <<EOF || die "endian test failed"
5297 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5298 EOF
5299 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5300
5301 check_cc <<EOF && enable const_nan
5302 #include <math.h>
5303 void foo(void) { struct { double d; } static const bar[] = { { NAN } }; }
5304 EOF
5305
5306 if ! enabled ppc64 || enabled bigendian; then
5307     disable vsx
5308 fi
5309
5310 check_gas() {
5311     log "check_gas using '$as' as AS"
5312     # :vararg is used on aarch64, arm and ppc altivec
5313     check_as <<EOF || return 1
5314 .macro m n, y:vararg=0
5315 \n: .int \y
5316 .endm
5317 m x
5318 EOF
5319     # .altmacro is only used in arm asm
5320     ! enabled arm || check_as <<EOF || return 1
5321 .altmacro
5322 EOF
5323     enable gnu_as
5324     return 0
5325 }
5326
5327 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5328     nogas=:
5329     enabled_any arm aarch64 && nogas=die
5330     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5331     as_noop=-v
5332
5333     case $as_type in
5334         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5335         gcc)  gaspp_as_type=gas ;;
5336         *)    gaspp_as_type=$as_type ;;
5337     esac
5338
5339     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5340
5341     test "${as#*gas-preprocessor.pl}" != "$as" ||
5342     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5343         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5344
5345     if ! check_gas ; then
5346         as=${gas:=$as}
5347         check_gas || \
5348             $nogas "GNU assembler not found, install/update gas-preprocessor"
5349     fi
5350
5351     check_as <<EOF && enable as_func
5352 .func test
5353 .endfunc
5354 EOF
5355 fi
5356
5357 check_inline_asm inline_asm_labels '"1:\n"'
5358
5359 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5360
5361 if enabled aarch64; then
5362     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5363     # internal assembler in clang 3.3 does not support this instruction
5364     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5365     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5366
5367     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5368
5369 elif enabled alpha; then
5370
5371     check_cflags -mieee
5372
5373 elif enabled arm; then
5374
5375     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5376
5377     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5378 float func(float a, float b){ return a+b; }
5379 EOF
5380
5381     enabled thumb && check_cflags -mthumb || check_cflags -marm
5382
5383     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5384         enable vfp_args
5385     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5386         enable vfp_args
5387     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5388         case "${cross_prefix:-$cc}" in
5389             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5390             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5391 __asm__ (".eabi_attribute 28, 1");
5392 int main(void) { return 0; }
5393 EOF
5394         esac
5395         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5396     fi
5397
5398     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5399     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5400     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5401     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5402     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5403     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5404     enabled setend  && check_insn setend  'setend be'
5405
5406     [ $target_os = linux ] || [ $target_os = android ] ||
5407         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5408             $ARCH_EXT_LIST_ARM
5409
5410     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5411
5412     check_as <<EOF && enable as_arch_directive
5413 .arch armv7-a
5414 EOF
5415     check_as <<EOF && enable as_fpu_directive
5416 .fpu neon
5417 EOF
5418
5419     # llvm's integrated assembler supports .object_arch from llvm 3.5
5420     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5421         check_as <<EOF && enable as_object_arch
5422 .object_arch armv4
5423 EOF
5424
5425     # MS armasm fails to assemble our PIC constructs
5426     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5427
5428 elif enabled mips; then
5429
5430     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5431     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5432     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5433
5434     # Enable minimum ISA based on selected options
5435     if enabled mips64; then
5436         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5437         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5438         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5439     else
5440         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5441         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5442         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5443         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5444     fi
5445
5446     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5447     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5448     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5449     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5450     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5451
5452     if enabled bigendian && enabled msa; then
5453         disable msa
5454     fi
5455
5456 elif enabled parisc; then
5457
5458     if enabled gcc; then
5459         case $($cc -dumpversion) in
5460             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5461         esac
5462     fi
5463
5464 elif enabled ppc; then
5465
5466     enable local_aligned
5467
5468     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5469     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5470     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5471     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5472
5473     if enabled altivec; then
5474         check_cflags -maltivec -mabi=altivec
5475
5476         # check if our compiler supports Motorola AltiVec C API
5477         check_code cc altivec.h "vector signed int v1 = (vector signed int) { 0 };
5478                                  vector signed int v2 = (vector signed int) { 1 };
5479                                  v1 = vec_add(v1, v2);" ||
5480             disable altivec
5481
5482         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5483     fi
5484
5485     if enabled vsx; then
5486         check_cflags -mvsx &&
5487         check_code cc altivec.h "int v[4] = { 0 };
5488                                  vector signed int v1 = vec_vsx_ld(0, v);" ||
5489             disable vsx
5490     fi
5491
5492     if enabled power8; then
5493         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5494     fi
5495
5496 elif enabled x86; then
5497
5498     check_builtin rdtsc    intrin.h   "__rdtsc()"
5499     check_builtin mm_empty mmintrin.h "_mm_empty()"
5500
5501     enable local_aligned
5502
5503     # check whether EBP is available on x86
5504     # As 'i' is stored on the stack, this program will crash
5505     # if the base pointer is used to access it because the
5506     # base pointer is cleared in the inline assembly code.
5507     check_exec_crash <<EOF && enable ebp_available
5508 volatile int i=0;
5509 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5510 return i;
5511 EOF
5512
5513     # check whether EBX is available on x86
5514     check_inline_asm ebx_available '""::"b"(0)' &&
5515         check_inline_asm ebx_available '"":::"%ebx"'
5516
5517     # check whether xmm clobbers are supported
5518     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5519
5520     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5521         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5522
5523     # check whether binutils is new enough to compile SSSE3/MMXEXT
5524     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5525     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5526
5527     probe_x86asm(){
5528         x86asmexe_probe=$1
5529         if check_cmd $x86asmexe_probe -v; then
5530             x86asmexe=$x86asmexe_probe
5531             x86asm_type=nasm
5532             x86asm_debug="-g -F dwarf"
5533             X86ASMDEP=
5534             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5535         elif check_cmd $x86asmexe_probe --version; then
5536             x86asmexe=$x86asmexe_probe
5537             x86asm_type=yasm
5538             x86asm_debug="-g dwarf2"
5539             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5540             X86ASM_DEPFLAGS=
5541         fi
5542         check_x86asm "movbe ecx, [5]" && enable x86asm
5543     }
5544
5545     if ! disabled_any asm mmx x86asm; then
5546         disable x86asm
5547         for program in $x86asmexe nasm yasm; do
5548             probe_x86asm $program && break
5549         done
5550         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5551         X86ASMFLAGS="-f $objformat"
5552         enabled pic               && append X86ASMFLAGS "-DPIC"
5553         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5554         case "$objformat" in
5555             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5556         esac
5557
5558         check_x86asm "vmovdqa32 [eax]{k1}{z}, zmm0"    || disable avx512_external
5559         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5560         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5561         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5562         check_x86asm "CPU amdnop" || disable cpunop
5563     fi
5564
5565     case "$cpu" in
5566         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5567             disable fast_clz
5568         ;;
5569     esac
5570
5571 fi
5572
5573 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5574
5575 check_ldflags -Wl,--as-needed
5576 check_ldflags -Wl,-z,noexecstack
5577
5578 if ! disabled network; then
5579     check_func getaddrinfo $network_extralibs
5580     check_func inet_aton $network_extralibs
5581
5582     check_type netdb.h "struct addrinfo"
5583     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5584     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5585     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5586     check_type poll.h "struct pollfd"
5587     check_type netinet/sctp.h "struct sctp_event_subscribe"
5588     check_struct "sys/socket.h" "struct msghdr" msg_flags
5589     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5590     check_type netinet/in.h "struct sockaddr_in6"
5591     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5592     check_type "sys/types.h sys/socket.h" socklen_t
5593
5594     # Prefer arpa/inet.h over winsock2
5595     if check_header arpa/inet.h ; then
5596         check_func closesocket
5597     elif check_header winsock2.h ; then
5598         check_func_headers winsock2.h closesocket -lws2 &&
5599             network_extralibs="-lws2" ||
5600         { check_func_headers winsock2.h closesocket -lws2_32 &&
5601             network_extralibs="-lws2_32"; } || disable winsock2_h network
5602         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5603
5604         check_type ws2tcpip.h socklen_t
5605         check_type ws2tcpip.h "struct addrinfo"
5606         check_type ws2tcpip.h "struct group_source_req"
5607         check_type ws2tcpip.h "struct ip_mreq_source"
5608         check_type ws2tcpip.h "struct ipv6_mreq"
5609         check_type winsock2.h "struct pollfd"
5610         check_struct winsock2.h "struct sockaddr" sa_len
5611         check_type ws2tcpip.h "struct sockaddr_in6"
5612         check_type ws2tcpip.h "struct sockaddr_storage"
5613     else
5614         disable network
5615     fi
5616 fi
5617
5618 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5619 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5620 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5621 check_builtin sarestart signal.h "SA_RESTART"
5622 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5623 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5624 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5625 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5626
5627 case "$custom_allocator" in
5628     jemalloc)
5629         # jemalloc by default does not use a prefix
5630         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5631     ;;
5632     tcmalloc)
5633         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5634         malloc_prefix=tc_
5635     ;;
5636 esac
5637
5638 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5639 check_func  ${malloc_prefix}memalign            && enable memalign
5640 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5641
5642 check_func  access
5643 check_func_headers stdlib.h arc4random
5644 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5645 check_func  fcntl
5646 check_func  fork
5647 check_func  gethrtime
5648 check_func  getopt
5649 check_func  getrusage
5650 check_func  gettimeofday
5651 check_func  isatty
5652 check_func  mkstemp
5653 check_func  mmap
5654 check_func  mprotect
5655 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5656 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5657 check_func  sched_getaffinity
5658 check_func  setrlimit
5659 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5660 check_func  strerror_r
5661 check_func  sysconf
5662 check_func  sysctl
5663 check_func  usleep
5664
5665 check_func_headers conio.h kbhit
5666 check_func_headers io.h setmode
5667 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5668 check_func_headers mach/mach_time.h mach_absolute_time
5669 check_func_headers stdlib.h getenv
5670 check_func_headers sys/stat.h lstat
5671
5672 check_func_headers windows.h GetProcessAffinityMask
5673 check_func_headers windows.h GetProcessTimes
5674 check_func_headers windows.h GetSystemTimeAsFileTime
5675 check_func_headers windows.h LoadLibrary
5676 check_func_headers windows.h MapViewOfFile
5677 check_func_headers windows.h PeekNamedPipe
5678 check_func_headers windows.h SetConsoleTextAttribute
5679 check_func_headers windows.h SetConsoleCtrlHandler
5680 check_func_headers windows.h Sleep
5681 check_func_headers windows.h VirtualAlloc
5682 check_func_headers glob.h glob
5683 enabled xlib &&
5684     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5685
5686 check_header direct.h
5687 check_header dirent.h
5688 check_header dxgidebug.h
5689 check_header dxva.h
5690 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5691 check_header io.h
5692 check_header libcrystalhd/libcrystalhd_if.h
5693 check_header malloc.h
5694 check_header net/udplite.h
5695 check_header poll.h
5696 check_header sys/param.h
5697 check_header sys/resource.h
5698 check_header sys/select.h
5699 check_header sys/time.h
5700 check_header sys/un.h
5701 check_header termios.h
5702 check_header unistd.h
5703 check_header valgrind/valgrind.h
5704 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5705 check_header windows.h
5706 check_header X11/extensions/XvMClib.h
5707 check_header asm/types.h
5708
5709 # it seems there are versions of clang in some distros that try to use the
5710 # gcc headers, which explodes for stdatomic
5711 # so we also check that atomics actually work here
5712 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5713
5714 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5715 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5716 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5717 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5718 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5719
5720 enabled appkit       && check_apple_framework AppKit
5721 enabled audiotoolbox && check_apple_framework AudioToolbox
5722 enabled avfoundation && check_apple_framework AVFoundation
5723 enabled coreimage    && check_apple_framework CoreImage
5724 enabled videotoolbox && check_apple_framework VideoToolbox
5725
5726 check_apple_framework CoreFoundation
5727 check_apple_framework CoreMedia
5728 check_apple_framework CoreVideo
5729
5730 enabled avfoundation && {
5731     disable coregraphics applicationservices
5732     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5733     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5734
5735 enabled videotoolbox && {
5736     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5737     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5738 }
5739
5740 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5741
5742 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5743 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5744 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5745 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5746 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5747
5748 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5749 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
5750 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5751 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5752 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5753 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5754 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5755 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5756 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5757 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5758
5759 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5760
5761 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5762
5763 if ! disabled w32threads && ! enabled pthreads; then
5764     check_func_headers "windows.h process.h" _beginthreadex &&
5765         check_type "windows.h" CONDITION_VARIABLE &&
5766         enable w32threads || disable w32threads
5767     if ! enabled w32threads && enabled winrt; then
5768         check_func_headers "windows.h" CreateThread &&
5769             enable w32threads || disable w32threads
5770     fi
5771 fi
5772
5773 # check for some common methods of building with pthread support
5774 # do this before the optional library checks as some of them require pthreads
5775 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5776     if check_lib pthreads pthread.h pthread_join   -pthread &&
5777        check_lib pthreads pthread.h pthread_create -pthread; then
5778         add_cflags -pthread
5779     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5780          check_lib pthreads pthread.h pthread_create -pthreads; then
5781         add_cflags -pthreads
5782     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5783          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5784         add_cflags -ldl -pthread
5785     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5786          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5787         :
5788     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5789          check_lib pthreads pthread.h pthread_create -lpthread; then
5790         :
5791     elif check_func pthread_join && check_func pthread_create; then
5792         enable pthreads
5793     fi
5794     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5795
5796     if enabled pthreads; then
5797         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
5798         check_func pthread_cancel $pthreads_extralibs
5799     fi
5800 fi
5801
5802 enabled  zlib && check_lib zlib   zlib.h      zlibVersion    -lz
5803 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5804 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5805
5806 # On some systems dynamic loading requires no extra linker flags
5807 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
5808
5809 check_lib libm math.h sin -lm
5810
5811 atan2f_args=2
5812 copysign_args=2
5813 hypot_args=2
5814 ldexpf_args=2
5815 powf_args=2
5816
5817 for func in $MATH_FUNCS; do
5818     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
5819 done
5820
5821 for func in $COMPLEX_FUNCS; do
5822     eval check_complexfunc $func \${${func}_args:-1}
5823 done
5824
5825 # these are off by default, so fail if requested and not available
5826 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5827 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5828 enabled decklink          && { require_header DeckLinkAPI.h &&
5829                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5830 enabled libndi_newtek     && require_header Processing.NDI.Lib.h
5831 enabled frei0r            && require_header frei0r.h
5832 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5833 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
5834 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5835 enabled ladspa            && require_header ladspa.h
5836 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv-0/lilv/lilv.h" lilv_world_new
5837 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5838 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
5839 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
5840 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
5841 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5842                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5843                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5844 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
5845 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
5846 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
5847 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5848                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5849                                  warn "using libfdk without pkg-config"; } }
5850 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"
5851 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5852 enabled fontconfig        && enable libfontconfig
5853 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
5854 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5855 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
5856 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
5857                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
5858 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5859                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5860                                done || die "ERROR: libgsm not found"; }
5861 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
5862 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5863 # While it may appear that require is being used as a pkg-config
5864 # fallback for libmfx, it is actually being used to detect a different
5865 # installation route altogether.  If libmfx is installed via the Intel
5866 # Media SDK or Intel Media Server Studio, these don't come with
5867 # pkg-config support.  Instead, users should make sure that the build
5868 # can find the libraries and headers through other means.
5869 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
5870                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
5871 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
5872 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
5873 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa $zlib_extralibs
5874 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
5875                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
5876                                die "ERROR: libnpp not found"; }
5877 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5878 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5879 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5880                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
5881                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5882                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
5883 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
5884 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
5885                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
5886 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
5887 enabled libopus           && {
5888     enabled libopus_decoder && {
5889         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
5890     }
5891     enabled libopus_encoder && {
5892         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
5893     }
5894 }
5895 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
5896 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
5897 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
5898 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
5899 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
5900 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
5901                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
5902 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
5903 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
5904 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
5905 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
5906 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
5907 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5908 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
5909 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5910                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5911                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5912 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
5913 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5914 enabled libvmaf           && require_pkg_config libvmaf libvmaf libvmaf.h compute_vmaf
5915 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5916 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
5917                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
5918
5919 enabled libvpx            && {
5920     enabled libvpx_vp8_decoder && {
5921         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5922             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_dec_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
5923                 die "ERROR: libvpx decoder version must be >=1.4.0";
5924     }
5925     enabled libvpx_vp8_encoder && {
5926         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5927             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
5928                 die "ERROR: libvpx encoder version must be >=1.4.0";
5929     }
5930     enabled libvpx_vp9_decoder && {
5931         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5932             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
5933     }
5934     enabled libvpx_vp9_encoder && {
5935         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5936             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
5937     }
5938     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5939         die "libvpx enabled but no supported decoders found"
5940     fi
5941 }
5942
5943 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5944 enabled libwebp           && {
5945     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5946     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
5947 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
5948                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
5949                                  warn "using libx264 without pkg-config"; } } &&
5950                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
5951                              { check_cpp_condition x264.h "X264_MPEG2" &&
5952                                enable libx262; }
5953 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
5954                              require_cpp_condition x265.h "X265_BUILD >= 68"
5955 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
5956 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5957 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
5958 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
5959 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
5960                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5961                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5962 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
5963 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5964 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5965                                { ! enabled cross_compile &&
5966                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
5967                                  add_ldflags -L/opt/vc/lib/ &&
5968                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
5969                                die "ERROR: mmal not found" &&
5970                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
5971 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5972                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
5973                                die "ERROR: openal not found"; } &&
5974                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5975                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5976 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5977                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5978                                die "ERROR: opencl not found"; } &&
5979                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5980                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5981                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5982 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
5983                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5984                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5985                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5986                                die "ERROR: opengl not found."
5987                              }
5988 enabled omx               && require_header OMX_Core.h
5989 enabled omx_rpi           && { check_header OMX_Core.h ||
5990                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
5991                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
5992 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
5993                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
5994                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5995                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5996                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5997                                die "ERROR: openssl not found"; }
5998 enabled rkmpp             && { { require_pkg_config rkmpp rockchip_mpp rockchip/rk_mpi.h mpp_create ||
5999                                  die "ERROR : Rockchip MPP was not found."; } &&
6000                                { check_func_headers rockchip/rk_mpi_cmd.h "MPP_DEC_GET_FREE_PACKET_SLOT_COUNT" ||
6001                                  die "ERROR: Rockchip MPP is outdated, please get a more recent one."; } &&
6002                                { enabled libdrm ||
6003                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6004                              }
6005
6006 if enabled gcrypt; then
6007     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6008     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6009         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6010         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6011         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6012             die "ERROR: gcrypt not found"
6013         add_cflags $gcrypt_cflags
6014     else
6015         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6016     fi
6017 fi
6018
6019 if enabled sdl2; then
6020     SDL2_CONFIG="${cross_prefix}sdl2-config"
6021     if test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent; then
6022         check_func SDL_Init $sdl2_extralibs $sdl2_cflags ||
6023             disable sdl2
6024     elif "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6025         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6026         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6027         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6028         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6029         check_func SDL_Init $sdl2_extralibs $sdl2_cflags &&
6030             enable sdl2
6031     fi
6032     if test $target_os = "mingw32"; then
6033         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6034     fi
6035 fi
6036
6037 if enabled decklink; then
6038     case $target_os in
6039         mingw32*|mingw64*|win32|win64)
6040             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6041             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6042             ;;
6043     esac
6044 fi
6045
6046 enabled securetransport &&
6047     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6048     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6049         disable securetransport
6050
6051 enabled securetransport &&
6052     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6053
6054 enabled schannel &&
6055     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6056     check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6057     schannel_extralibs="-lsecur32" ||
6058         disable schannel
6059
6060 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6061 enabled makeinfo \
6062     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6063     && enable makeinfo_html || disable makeinfo_html
6064 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6065 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6066 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6067 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6068
6069 # check V4L2 codecs available in the API
6070 check_header linux/fb.h
6071 check_header linux/videodev2.h
6072 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6073 check_code cc linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;" || disable v4l2_m2m
6074 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;" && enable vc1_v4l2_m2m
6075 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;" && enable mpeg1_v4l2_m2m
6076 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;" && enable mpeg2_v4l2_m2m
6077 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;" && enable mpeg4_v4l2_m2m
6078 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;" && enable hevc_v4l2_m2m
6079 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H263;" && enable h263_v4l2_m2m
6080 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H264;" && enable h264_v4l2_m2m
6081 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;" && enable vp8_v4l2_m2m
6082 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;" && enable vp9_v4l2_m2m
6083
6084 check_header sys/videoio.h
6085 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6086
6087 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6088 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6089 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6090 # w32api 3.12 had it defined wrong
6091 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6092
6093 check_type "dshow.h" IBaseFilter
6094
6095 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6096 check_header "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6097     check_header "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6098     check_header "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6099     check_header "dev/ic/bt8xx.h"
6100
6101 if check_struct sys/soundcard.h audio_buf_info bytes; then
6102     enable_sanitized sys/soundcard.h
6103 else
6104     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6105     #include <sys/soundcard.h>
6106     audio_buf_info abc;
6107 EOF
6108 fi
6109
6110 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6111     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6112
6113 enabled libjack &&
6114     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6115
6116 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6117
6118 if enabled libcdio; then
6119     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6120     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6121     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6122     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6123     die "ERROR: No usable libcdio/cdparanoia found"
6124 fi
6125
6126 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6127     disable libxcb_shm libxcb_shape libxcb_xfixes
6128
6129 if enabled libxcb; then
6130     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6131     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6132     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6133 fi
6134
6135 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6136
6137 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6138 # the desktop api partition
6139 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6140 #ifdef WINAPI_FAMILY
6141 #include <winapifamily.h>
6142 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6143 #error desktop, not uwp
6144 #else
6145 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6146 #endif
6147 #else
6148 #error no family set
6149 #endif
6150 EOF
6151
6152 enabled vaapi &&
6153     check_lib vaapi va/va.h vaInitialize -lva
6154
6155 enabled vaapi &&
6156     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6157     disable vaapi
6158
6159 enabled vaapi &&
6160     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6161
6162 enabled vaapi &&
6163     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6164
6165 enabled vaapi &&
6166     check_cpp_condition "va/va.h" "VA_CHECK_VERSION(1, 0, 0)" &&
6167     enable vaapi_1
6168
6169 if enabled_all opencl vaapi ; then
6170     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6171         enable opencl_vaapi_beignet
6172     if enabled libmfx ; then
6173         check_type "CL/cl.h CL/va_ext.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6174             enable opencl_vaapi_intel_media
6175     fi
6176 fi
6177
6178 if enabled_all opencl dxva2 ; then
6179     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6180         enable opencl_dxva2
6181 fi
6182
6183 if enabled_all opencl d3d11va ; then
6184     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6185         enable opencl_d3d11
6186 fi
6187
6188 if enabled_all opencl libdrm ; then
6189     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6190         enable opencl_drm_arm
6191 fi
6192
6193 enabled vdpau &&
6194     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6195     disable vdpau
6196
6197 enabled vdpau &&
6198     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6199
6200 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6201
6202 if enabled x86; then
6203     case $target_os in
6204         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6205             ;;
6206         *)
6207             disable cuda cuvid nvdec nvenc
6208             ;;
6209     esac
6210 else
6211     disable cuda cuvid nvdec nvenc
6212 fi
6213
6214 enabled nvenc &&
6215     check_cc -I$source_path <<EOF || disable nvenc
6216 #include "compat/nvenc/nvEncodeAPI.h"
6217 NV_ENCODE_API_FUNCTION_LIST flist;
6218 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6219 int main(void) { return 0; }
6220 EOF
6221
6222 enabled amf &&
6223     check_cpp_condition "AMF/core/Version.h" \
6224         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400040001" ||
6225     disable amf
6226
6227 # Funny iconv installations are not unusual, so check it after all flags have been set
6228 if enabled libc_iconv; then
6229     check_func_headers iconv.h iconv
6230 elif enabled iconv; then
6231     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6232 fi
6233
6234 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6235
6236 # add some useful compiler flags if supported
6237 check_cflags -Wdeclaration-after-statement
6238 check_cflags -Wall
6239 check_cflags -Wdisabled-optimization
6240 check_cflags -Wpointer-arith
6241 check_cflags -Wredundant-decls
6242 check_cflags -Wwrite-strings
6243 check_cflags -Wtype-limits
6244 check_cflags -Wundef
6245 check_cflags -Wmissing-prototypes
6246 check_cflags -Wno-pointer-to-int-cast
6247 check_cflags -Wstrict-prototypes
6248 check_cflags -Wempty-body
6249
6250 if enabled extra_warnings; then
6251     check_cflags -Wcast-qual
6252     check_cflags -Wextra
6253     check_cflags -Wpedantic
6254 fi
6255
6256 check_disable_warning(){
6257     warning_flag=-W${1#-Wno-}
6258     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6259 }
6260
6261 test_cflags -Werror=unused-command-line-argument &&
6262     append unknown_warning_flags "-Werror=unused-command-line-argument"
6263 test_cflags -Werror=unknown-warning-option &&
6264     append unknown_warning_flags "-Werror=unknown-warning-option"
6265
6266 check_disable_warning -Wno-parentheses
6267 check_disable_warning -Wno-switch
6268 check_disable_warning -Wno-format-zero-length
6269 check_disable_warning -Wno-pointer-sign
6270 check_disable_warning -Wno-unused-const-variable
6271 check_disable_warning -Wno-bool-operation
6272
6273 check_disable_warning_headers(){
6274     warning_flag=-W${1#-Wno-}
6275     test_cflags $warning_flag && add_cflags_headers $1
6276 }
6277
6278 check_disable_warning_headers -Wno-deprecated-declarations
6279 check_disable_warning_headers -Wno-unused-variable
6280
6281 check_cc <<EOF && enable blocks_extension
6282 void (^block)(void);
6283 EOF
6284
6285 # add some linker flags
6286 check_ldflags -Wl,--warn-common
6287 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6288 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6289 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6290
6291 # add some strip flags
6292 check_stripflags -x
6293
6294 enabled neon_clobber_test &&
6295     check_ldflags -Wl,--wrap,avcodec_open2              \
6296                   -Wl,--wrap,avcodec_decode_audio4      \
6297                   -Wl,--wrap,avcodec_decode_video2      \
6298                   -Wl,--wrap,avcodec_decode_subtitle2   \
6299                   -Wl,--wrap,avcodec_encode_audio2      \
6300                   -Wl,--wrap,avcodec_encode_video2      \
6301                   -Wl,--wrap,avcodec_encode_subtitle    \
6302                   -Wl,--wrap,avcodec_send_packet        \
6303                   -Wl,--wrap,avcodec_receive_packet     \
6304                   -Wl,--wrap,avcodec_send_frame         \
6305                   -Wl,--wrap,avcodec_receive_frame      \
6306                   -Wl,--wrap,swr_convert                \
6307                   -Wl,--wrap,avresample_convert ||
6308     disable neon_clobber_test
6309
6310 enabled xmm_clobber_test &&
6311     check_ldflags -Wl,--wrap,avcodec_open2              \
6312                   -Wl,--wrap,avcodec_decode_audio4      \
6313                   -Wl,--wrap,avcodec_decode_video2      \
6314                   -Wl,--wrap,avcodec_decode_subtitle2   \
6315                   -Wl,--wrap,avcodec_encode_audio2      \
6316                   -Wl,--wrap,avcodec_encode_video2      \
6317                   -Wl,--wrap,avcodec_encode_subtitle    \
6318                   -Wl,--wrap,avcodec_send_packet        \
6319                   -Wl,--wrap,avcodec_receive_packet     \
6320                   -Wl,--wrap,avcodec_send_frame         \
6321                   -Wl,--wrap,avcodec_receive_frame      \
6322                   -Wl,--wrap,swr_convert                \
6323                   -Wl,--wrap,avresample_convert         \
6324                   -Wl,--wrap,sws_scale ||
6325     disable xmm_clobber_test
6326
6327 check_ld "cc" <<EOF && enable proper_dce
6328 extern const int array[512];
6329 static inline int func(void) { return array[0]; }
6330 int main(void) { return 0; }
6331 EOF
6332
6333 if enabled proper_dce; then
6334     echo "X { local: *; };" > $TMPV
6335     if test_ldflags -Wl,${version_script},$TMPV; then
6336         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6337         quotes='""'
6338         check_cc <<EOF && enable symver_asm_label
6339 void ff_foo(void) __asm__ ("av_foo@VERSION");
6340 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6341 EOF
6342         check_cc <<EOF && enable symver_gnu_asm
6343 __asm__(".symver ff_foo,av_foo@VERSION");
6344 void ff_foo(void) {}
6345 EOF
6346     fi
6347 fi
6348
6349 if [ -z "$optflags" ]; then
6350     if enabled small; then
6351         optflags=$cflags_size
6352     elif enabled optimizations; then
6353         optflags=$cflags_speed
6354     else
6355         optflags=$cflags_noopt
6356     fi
6357 fi
6358
6359 if [ -z "$nvccflags" ]; then
6360     nvccflags=$nvccflags_default
6361 fi
6362
6363 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6364     nvccflags="$nvccflags -m64"
6365 else
6366     nvccflags="$nvccflags -m32"
6367 fi
6368
6369 check_optflags(){
6370     check_cflags "$@"
6371     enabled lto && check_ldflags "$@"
6372 }
6373
6374 check_optflags $optflags
6375 check_optflags -fno-math-errno
6376 check_optflags -fno-signed-zeros
6377
6378 if enabled lto; then
6379     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6380     check_cflags  -flto
6381     check_ldflags -flto $cpuflags
6382     disable inline_asm_direct_symbol_refs
6383 fi
6384
6385 enabled ftrapv && check_cflags -ftrapv
6386
6387 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6388 int x;
6389 EOF
6390
6391
6392 if enabled icc; then
6393     # Just warnings, no remarks
6394     check_cflags -w1
6395     # -wd: Disable following warnings
6396     # 144, 167, 556: -Wno-pointer-sign
6397     # 188: enumerated type mixed with another type
6398     # 1292: attribute "foo" ignored
6399     # 1419: external declaration in primary source file
6400     # 10006: ignoring unknown option -fno-signed-zeros
6401     # 10148: ignoring unknown option -Wno-parentheses
6402     # 10156: ignoring option '-W'; no argument required
6403     # 13200: No EMMS instruction before call to function
6404     # 13203: No EMMS instruction before return from function
6405     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6406     # 11030: Warning unknown option --as-needed
6407     # 10156: ignoring option '-export'; no argument required
6408     check_ldflags -wd10156,11030
6409     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6410     enable ebp_available
6411     # The test above does not test linking
6412     enabled lto && disable symver_asm_label
6413     if enabled x86_32; then
6414         icc_version=$($cc -dumpversion)
6415         test ${icc_version%%.*} -ge 11 &&
6416             check_cflags -falign-stack=maintain-16-byte ||
6417             disable aligned_stack
6418     fi
6419 elif enabled gcc; then
6420     check_optflags -fno-tree-vectorize
6421     check_cflags -Werror=format-security
6422     check_cflags -Werror=implicit-function-declaration
6423     check_cflags -Werror=missing-prototypes
6424     check_cflags -Werror=return-type
6425     check_cflags -Werror=vla
6426     check_cflags -Wformat
6427     check_cflags -fdiagnostics-color=auto
6428     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6429 elif enabled llvm_gcc; then
6430     check_cflags -mllvm -stack-alignment=16
6431 elif enabled clang; then
6432     check_cflags -mllvm -stack-alignment=16
6433     check_cflags -mstack-alignment=16
6434     check_cflags -Qunused-arguments
6435     check_cflags -Werror=implicit-function-declaration
6436     check_cflags -Werror=missing-prototypes
6437     check_cflags -Werror=return-type
6438 elif enabled cparser; then
6439     add_cflags -Wno-missing-variable-declarations
6440     add_cflags -Wno-empty-statement
6441 elif enabled armcc; then
6442     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6443     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6444     # 2523: use of inline assembly is deprecated
6445     add_cflags -W${armcc_opt},--diag_suppress=2523
6446     add_cflags -W${armcc_opt},--diag_suppress=1207
6447     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6448     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6449     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6450     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6451 elif enabled pathscale; then
6452     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6453     disable inline_asm
6454 elif enabled_any msvc icl; then
6455     enabled x86_32 && disable aligned_stack
6456     enabled_all x86_32 debug && add_cflags -Oy-
6457     enabled debug && add_ldflags -debug
6458     enable pragma_deprecated
6459     if enabled icl; then
6460         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6461         # (correctly) on icl 13.x.
6462         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6463             add_cflags -Qansi-alias
6464         # Some inline asm is not compilable in debug
6465         if enabled debug; then
6466             disable ebp_available
6467             disable ebx_available
6468         fi
6469     fi
6470     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6471     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6472     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6473     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6474     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6475     # MSVC 2013 and newer can handle it fine.
6476     # If this declspec fails, force including stdlib.h before the restrict redefinition
6477     # happens in config.h.
6478     if [ $_restrict != restrict ]; then
6479         check_cc <<EOF || add_cflags -FIstdlib.h
6480 __declspec($_restrict) void* foo(int);
6481 EOF
6482     fi
6483     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6484     # Issue has been fixed in MSVC v19.00.24218.
6485     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6486         check_cflags -d2SSAOptimizer-
6487     # enable utf-8 source processing on VS2015 U2 and newer
6488     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6489         add_cflags -utf-8
6490 fi
6491
6492 for pfx in "" host_; do
6493     varname=${pfx%_}cc_type
6494     eval "type=\$$varname"
6495     if [ "$type" = "msvc" ]; then
6496         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6497 static inline int foo(int a) { return a; }
6498 EOF
6499     fi
6500 done
6501
6502 case $as_type in
6503     clang)
6504         add_asflags -Qunused-arguments
6505     ;;
6506 esac
6507
6508 case $ld_type in
6509     clang)
6510         check_ldflags -Qunused-arguments
6511     ;;
6512 esac
6513
6514 enable frame_thread_encoder
6515
6516 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6517
6518 check_deps $CONFIG_LIST       \
6519            $CONFIG_EXTRA      \
6520            $HAVE_LIST         \
6521            $ALL_COMPONENTS    \
6522
6523 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"
6524 enabled avresample && warn "Building with deprecated library libavresample"
6525
6526 if test $target_os = "haiku"; then
6527     disable memalign
6528     disable posix_memalign
6529 fi
6530
6531 flatten_extralibs(){
6532     unset nested_entries
6533     list_name=$1
6534     eval list=\$${1}
6535     for entry in $list; do
6536         entry_copy=$entry
6537         resolve entry_copy
6538         append nested_entries $(filter '*_extralibs' $entry_copy)
6539         flat_entries=$(filter_out '*_extralibs' $entry_copy)
6540         eval $entry="\$flat_entries"
6541     done
6542     append $list_name "$nested_entries"
6543
6544     resolve nested_entries
6545     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6546         flatten_extralibs $list_name
6547     fi
6548 }
6549
6550 flatten_extralibs_wrapper(){
6551     list_name=$1
6552     flatten_extralibs $list_name
6553     unique $list_name
6554     resolve $list_name
6555     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6556     eval printf \''%s'\' \""\$$list_name"\"
6557 }
6558
6559 for linkunit in $LIBRARY_LIST; do
6560     unset current_extralibs
6561     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6562     for comp in ${components}; do
6563         enabled $comp || continue
6564         comp_extralibs="${comp}_extralibs"
6565         append current_extralibs $comp_extralibs
6566     done
6567     eval prepend ${linkunit}_extralibs $current_extralibs
6568 done
6569
6570 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6571     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6572 done
6573
6574 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6575
6576 for thread in $THREADS_LIST; do
6577     if enabled $thread; then
6578         test -n "$thread_type" &&
6579             die "ERROR: Only one thread type must be selected." ||
6580             thread_type="$thread"
6581     fi
6582 done
6583
6584 if disabled stdatomic; then
6585     if enabled atomics_gcc; then
6586         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6587     elif enabled atomics_win32; then
6588         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6589     elif enabled atomics_suncc; then
6590         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6591     elif enabled pthreads; then
6592         add_compat atomics/pthread/stdatomic.o
6593         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6594     else
6595         enabled threads && die "Threading is enabled, but no atomics are available"
6596         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6597     fi
6598 fi
6599
6600 # Check if requested libraries were found.
6601 for lib in $AUTODETECT_LIBS; do
6602     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6603 done
6604
6605 enabled zlib && add_cppflags -DZLIB_CONST
6606
6607 # conditional library dependencies, in linking order
6608 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6609 enabled afir_filter         && prepend avfilter_deps "avcodec"
6610 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6611 enabled aresample_filter    && prepend avfilter_deps "swresample"
6612 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6613 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6614 enabled convolve_filter     && prepend avfilter_deps "avcodec"
6615 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
6616 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6617 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6618 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6619 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6620 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6621 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6622 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6623 enabled pan_filter          && prepend avfilter_deps "swresample"
6624 enabled pp_filter           && prepend avfilter_deps "postproc"
6625 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6626 enabled resample_filter && prepend avfilter_deps "avresample"
6627 enabled sab_filter          && prepend avfilter_deps "swscale"
6628 enabled scale_filter    && prepend avfilter_deps "swscale"
6629 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6630 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6631 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6632 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6633 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6634 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6635 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6636 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6637 enabled spp_filter          && prepend avfilter_deps "avcodec"
6638 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6639 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6640 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6641
6642 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6643
6644 #FIXME
6645 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6646
6647 enabled opus_decoder    && prepend avcodec_deps "swresample"
6648
6649 expand_deps(){
6650     lib_deps=${1}_deps
6651     eval "deps=\$$lib_deps"
6652     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6653     unique $lib_deps
6654 }
6655
6656 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6657 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6658
6659 map 'expand_deps $v' $LIBRARY_LIST
6660
6661 license="LGPL version 2.1 or later"
6662 if enabled nonfree; then
6663     license="nonfree and unredistributable"
6664 elif enabled gplv3; then
6665     license="GPL version 3 or later"
6666 elif enabled lgplv3; then
6667     license="LGPL version 3 or later"
6668 elif enabled gpl; then
6669     license="GPL version 2 or later"
6670 fi
6671
6672 if test "$quiet" != "yes"; then
6673
6674 echo "install prefix            $prefix"
6675 echo "source path               $source_path"
6676 echo "C compiler                $cc"
6677 echo "C library                 $libc_type"
6678 if test "$host_cc" != "$cc"; then
6679     echo "host C compiler           $host_cc"
6680     echo "host C library            $host_libc_type"
6681 fi
6682 echo "ARCH                      $arch ($cpu)"
6683 if test "$build_suffix" != ""; then
6684     echo "build suffix              $build_suffix"
6685 fi
6686 if test "$progs_suffix" != ""; then
6687     echo "progs suffix              $progs_suffix"
6688 fi
6689 if test "$extra_version" != ""; then
6690     echo "version string suffix     $extra_version"
6691 fi
6692 echo "big-endian                ${bigendian-no}"
6693 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6694 if enabled x86; then
6695     echo "standalone assembly       ${x86asm-no}"
6696     echo "x86 assembler             ${x86asmexe}"
6697     echo "MMX enabled               ${mmx-no}"
6698     echo "MMXEXT enabled            ${mmxext-no}"
6699     echo "3DNow! enabled            ${amd3dnow-no}"
6700     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6701     echo "SSE enabled               ${sse-no}"
6702     echo "SSSE3 enabled             ${ssse3-no}"
6703     echo "AESNI enabled             ${aesni-no}"
6704     echo "AVX enabled               ${avx-no}"
6705     echo "AVX2 enabled              ${avx2-no}"
6706     echo "AVX-512 enabled           ${avx512-no}"
6707     echo "XOP enabled               ${xop-no}"
6708     echo "FMA3 enabled              ${fma3-no}"
6709     echo "FMA4 enabled              ${fma4-no}"
6710     echo "i686 features enabled     ${i686-no}"
6711     echo "CMOV is fast              ${fast_cmov-no}"
6712     echo "EBX available             ${ebx_available-no}"
6713     echo "EBP available             ${ebp_available-no}"
6714 fi
6715 if enabled aarch64; then
6716     echo "NEON enabled              ${neon-no}"
6717     echo "VFP enabled               ${vfp-no}"
6718 fi
6719 if enabled arm; then
6720     echo "ARMv5TE enabled           ${armv5te-no}"
6721     echo "ARMv6 enabled             ${armv6-no}"
6722     echo "ARMv6T2 enabled           ${armv6t2-no}"
6723     echo "VFP enabled               ${vfp-no}"
6724     echo "NEON enabled              ${neon-no}"
6725     echo "THUMB enabled             ${thumb-no}"
6726 fi
6727 if enabled mips; then
6728     echo "MIPS FPU enabled          ${mipsfpu-no}"
6729     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6730     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6731     echo "MIPS MSA enabled          ${msa-no}"
6732     echo "LOONGSON MMI enabled      ${mmi-no}"
6733 fi
6734 if enabled ppc; then
6735     echo "AltiVec enabled           ${altivec-no}"
6736     echo "VSX enabled               ${vsx-no}"
6737     echo "POWER8 enabled            ${power8-no}"
6738     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6739     echo "dcbzl available           ${dcbzl-no}"
6740 fi
6741 echo "debug symbols             ${debug-no}"
6742 echo "strip symbols             ${stripping-no}"
6743 echo "optimize for size         ${small-no}"
6744 echo "optimizations             ${optimizations-no}"
6745 echo "static                    ${static-no}"
6746 echo "shared                    ${shared-no}"
6747 echo "postprocessing support    ${postproc-no}"
6748 echo "network support           ${network-no}"
6749 echo "threading support         ${thread_type-no}"
6750 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6751 echo "texi2html enabled         ${texi2html-no}"
6752 echo "perl enabled              ${perl-no}"
6753 echo "pod2man enabled           ${pod2man-no}"
6754 echo "makeinfo enabled          ${makeinfo-no}"
6755 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6756 test -n "$random_seed" &&
6757     echo "random seed               ${random_seed}"
6758 echo
6759
6760 echo "External libraries:"
6761 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
6762 echo
6763
6764 echo "External libraries providing hardware acceleration:"
6765 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
6766 echo
6767
6768 echo "Libraries:"
6769 print_enabled '' $LIBRARY_LIST | print_in_columns
6770 echo
6771
6772 echo "Programs:"
6773 print_enabled '' $PROGRAM_LIST | print_in_columns
6774 echo
6775
6776 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6777     echo "Enabled ${type}s:"
6778     eval list=\$$(toupper $type)_LIST
6779     print_enabled '_*' $list | print_in_columns
6780     echo
6781 done
6782
6783 if test -n "$ignore_tests"; then
6784     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6785     echo "Ignored FATE tests:"
6786     echo $ignore_tests | print_in_columns
6787     echo
6788 fi
6789
6790 echo "License: $license"
6791
6792 fi # test "$quiet" != "yes"
6793
6794 if test -n "$WARNINGS"; then
6795     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6796     enabled fatal_warnings && exit 1
6797 fi
6798
6799 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6800
6801 esc(){
6802     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
6803 }
6804
6805 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
6806
6807 enabled stripping || strip="echo skipping strip"
6808 enabled stripping || striptype=""
6809
6810 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6811
6812 cat > ffbuild/config.mak <<EOF
6813 # Automatically generated by configure - do not modify!
6814 ifndef FFMPEG_CONFIG_MAK
6815 FFMPEG_CONFIG_MAK=1
6816 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6817 prefix=$prefix
6818 LIBDIR=\$(DESTDIR)$libdir
6819 SHLIBDIR=\$(DESTDIR)$shlibdir
6820 INCDIR=\$(DESTDIR)$incdir
6821 BINDIR=\$(DESTDIR)$bindir
6822 DATADIR=\$(DESTDIR)$datadir
6823 DOCDIR=\$(DESTDIR)$docdir
6824 MANDIR=\$(DESTDIR)$mandir
6825 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6826 INSTALL_NAME_DIR=$install_name_dir
6827 SRC_PATH=$source_path
6828 SRC_LINK=$source_link
6829 ifndef MAIN_MAKEFILE
6830 SRC_PATH:=\$(SRC_PATH:.%=..%)
6831 endif
6832 CC_IDENT=$cc_ident
6833 ARCH=$arch
6834 INTRINSICS=$intrinsics
6835 EXTERN_PREFIX=$extern_prefix
6836 CC=$cc
6837 CXX=$cxx
6838 AS=$as
6839 OBJCC=$objcc
6840 LD=$ld
6841 DEPCC=$dep_cc
6842 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6843 DEPAS=$as
6844 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6845 X86ASM=$x86asmexe
6846 DEPX86ASM=$x86asmexe
6847 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6848 AR=$ar
6849 ARFLAGS=$arflags
6850 AR_O=$ar_o
6851 AR_CMD=$ar
6852 NM_CMD=$nm
6853 RANLIB=$ranlib
6854 STRIP=$strip
6855 STRIPTYPE=$striptype
6856 NVCC=$nvcc
6857 CP=cp -p
6858 LN_S=$ln_s
6859 CPPFLAGS=$CPPFLAGS
6860 CFLAGS=$CFLAGS
6861 CXXFLAGS=$CXXFLAGS
6862 OBJCFLAGS=$OBJCFLAGS
6863 ASFLAGS=$ASFLAGS
6864 NVCCFLAGS=$nvccflags
6865 AS_C=$AS_C
6866 AS_O=$AS_O
6867 OBJCC_C=$OBJCC_C
6868 OBJCC_E=$OBJCC_E
6869 OBJCC_O=$OBJCC_O
6870 CC_C=$CC_C
6871 CC_E=$CC_E
6872 CC_O=$CC_O
6873 CXX_C=$CXX_C
6874 CXX_O=$CXX_O
6875 NVCC_C=$NVCC_C
6876 NVCC_O=$NVCC_O
6877 LD_O=$LD_O
6878 X86ASM_O=$X86ASM_O
6879 LD_LIB=$LD_LIB
6880 LD_PATH=$LD_PATH
6881 WINDRES=$windres
6882 DEPWINDRES=$dep_cc
6883 DOXYGEN=$doxygen
6884 LDFLAGS=$LDFLAGS
6885 LDEXEFLAGS=$LDEXEFLAGS
6886 LDSOFLAGS=$LDSOFLAGS
6887 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6888 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6889 X86ASMFLAGS=$X86ASMFLAGS
6890 BUILDSUF=$build_suffix
6891 PROGSSUF=$progs_suffix
6892 FULLNAME=$FULLNAME
6893 LIBPREF=$LIBPREF
6894 LIBSUF=$LIBSUF
6895 LIBNAME=$LIBNAME
6896 SLIBPREF=$SLIBPREF
6897 SLIBSUF=$SLIBSUF
6898 EXESUF=$EXESUF
6899 EXTRA_VERSION=$extra_version
6900 CCDEP=$CCDEP
6901 CXXDEP=$CXXDEP
6902 CCDEP_FLAGS=$CCDEP_FLAGS
6903 ASDEP=$ASDEP
6904 ASDEP_FLAGS=$ASDEP_FLAGS
6905 X86ASMDEP=$X86ASMDEP
6906 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
6907 CC_DEPFLAGS=$CC_DEPFLAGS
6908 AS_DEPFLAGS=$AS_DEPFLAGS
6909 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
6910 HOSTCC=$host_cc
6911 HOSTLD=$host_ld
6912 HOSTCFLAGS=$host_cflags
6913 HOSTCPPFLAGS=$host_cppflags
6914 HOSTEXESUF=$HOSTEXESUF
6915 HOSTLDFLAGS=$host_ldflags
6916 HOSTEXTRALIBS=$host_extralibs
6917 DEPHOSTCC=$host_cc
6918 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6919 HOSTCCDEP=$HOSTCCDEP
6920 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6921 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6922 HOSTCC_C=$HOSTCC_C
6923 HOSTCC_O=$HOSTCC_O
6924 HOSTLD_O=$HOSTLD_O
6925 TARGET_EXEC=$target_exec $target_exec_args
6926 TARGET_PATH=$target_path
6927 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6928 CFLAGS-ffplay=${sdl2_cflags}
6929 CFLAGS_HEADERS=$CFLAGS_HEADERS
6930 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6931 EXTRALIBS=$extralibs
6932 COMPAT_OBJS=$compat_objs
6933 INSTALL=$install
6934 SLIBNAME=${SLIBNAME}
6935 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6936 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6937 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6938 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6939 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6940 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6941 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6942 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6943 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6944 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6945 NOREDZONE_FLAGS=$noredzone_flags
6946 LIBFUZZER_PATH=$libfuzzer_path
6947 IGNORE_TESTS=$ignore_tests
6948 EOF
6949
6950 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
6951
6952 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6953     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
6954 done
6955
6956 cat > $TMPH <<EOF
6957 /* Automatically generated by configure - do not modify! */
6958 #ifndef FFMPEG_CONFIG_H
6959 #define FFMPEG_CONFIG_H
6960 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6961 #define FFMPEG_LICENSE "$(c_escape $license)"
6962 #define CONFIG_THIS_YEAR 2018
6963 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6964 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6965 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6966 #define av_restrict $_restrict
6967 #define EXTERN_PREFIX "${extern_prefix}"
6968 #define EXTERN_ASM ${extern_prefix}
6969 #define BUILDSUF "$build_suffix"
6970 #define SLIBSUF "$SLIBSUF"
6971 #define HAVE_MMX2 HAVE_MMXEXT
6972 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6973 EOF
6974
6975 test -n "$assert_level" &&
6976     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6977
6978 test -n "$malloc_prefix" &&
6979     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6980
6981 if enabled x86asm; then
6982     append config_files $TMPASM
6983     cat > $TMPASM <<EOF
6984 ; Automatically generated by configure - do not modify!
6985 EOF
6986 fi
6987
6988 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6989
6990
6991 mkdir -p doc
6992 mkdir -p tests
6993 mkdir -p tests/api
6994 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6995
6996 print_config ARCH_   "$config_files" $ARCH_LIST
6997 print_config HAVE_   "$config_files" $HAVE_LIST
6998 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6999                                      $CONFIG_EXTRA      \
7000                                      $ALL_COMPONENTS    \
7001
7002 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7003 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7004
7005 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7006 cp_if_changed $TMPH config.h
7007 touch ffbuild/.config
7008
7009 enabled x86asm && cp_if_changed $TMPASM config.asm
7010
7011 cat > $TMPH <<EOF
7012 /* Generated by ffmpeg configure */
7013 #ifndef AVUTIL_AVCONFIG_H
7014 #define AVUTIL_AVCONFIG_H
7015 EOF
7016
7017 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7018
7019 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7020
7021 cp_if_changed $TMPH libavutil/avconfig.h
7022
7023 # generate the lists of enabled components
7024 print_enabled_components(){
7025     file=$1
7026     struct_name=$2
7027     name=$3
7028     shift 3
7029     echo "static const $struct_name * const $name[] = {" > $TMPH
7030     for c in $*; do
7031         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
7032     done
7033     echo "    NULL };" >> $TMPH
7034     cp_if_changed $TMPH $file
7035 }
7036
7037 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7038 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7039
7040 # Settings for pkg-config files
7041
7042 cat > $TMPH <<EOF
7043 # Automatically generated by configure - do not modify!
7044 shared=$shared
7045 build_suffix=$build_suffix
7046 prefix=$prefix
7047 libdir=$libdir
7048 incdir=$incdir
7049 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7050 source_path=${source_path}
7051 LIBPREF=${LIBPREF}
7052 LIBSUF=${LIBSUF}
7053 extralibs_avutil="$avutil_extralibs"
7054 extralibs_avcodec="$avcodec_extralibs"
7055 extralibs_avformat="$avformat_extralibs"
7056 extralibs_avdevice="$avdevice_extralibs"
7057 extralibs_avfilter="$avfilter_extralibs"
7058 extralibs_avresample="$avresample_extralibs"
7059 extralibs_postproc="$postproc_extralibs"
7060 extralibs_swscale="$swscale_extralibs"
7061 extralibs_swresample="$swresample_extralibs"
7062 EOF
7063
7064 for lib in $LIBRARY_LIST; do
7065     lib_deps="$(eval echo \$${lib}_deps)"
7066     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7067 done
7068
7069 cp_if_changed $TMPH ffbuild/config.sh