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

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --quiet                  Suppress showing informative output
  67   --list-decoders          show all available decoders
  68   --list-encoders          show all available encoders
  69   --list-hwaccels          show all available hardware accelerators
  70   --list-demuxers          show all available demuxers
  71   --list-muxers            show all available muxers
  72   --list-parsers           show all available parsers
  73   --list-protocols         show all available protocols
  74   --list-bsfs              show all available bitstream filters
  75   --list-indevs            show all available input devices
  76   --list-outdevs           show all available output devices
  77   --list-filters           show all available filters
  78
  79 Standard options:
  80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
  81   --disable-logging        do not log configure debug information
  82   --fatal-warnings         fail if any configure warning is generated
  83   --prefix=PREFIX          install in PREFIX [$prefix_default]
  84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  87   --libdir=DIR             install libs in DIR [PREFIX/lib]
  88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  89   --incdir=DIR             install includes in DIR [PREFIX/include]
  90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  92   --enable-rpath           use rpath to allow installing libraries in paths
  93                            not part of the dynamic linker search path
  94                            use rpath when linking programs (USE WITH CARE)
  95   --install-name-dir=DIR   Darwin directory name for installed targets
  96
  97 Licensing options:
  98   --enable-gpl             allow use of GPL code, the resulting libs
  99                            and binaries will be under GPL [no]
 100   --enable-version3        upgrade (L)GPL to version 3 [no]
 101   --enable-nonfree         allow use of nonfree code, the resulting libs
 102                            and binaries will be unredistributable [no]
 103
 104 Configuration options:
 105   --disable-static         do not build static libraries [no]
 106   --enable-shared          build shared libraries [no]
 107   --enable-small           optimize for size instead of speed
 108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
 109   --enable-gray            enable full grayscale support (slower color)
 110   --disable-swscale-alpha  disable alpha channel support in swscale
 111   --disable-all            disable building components, libraries and programs
 112   --disable-autodetect     disable automatically detected external libraries [no]
 113
 114 Program options:
 115   --disable-programs       do not build command line programs
 116   --disable-ffmpeg         disable ffmpeg build
 117   --disable-ffplay         disable ffplay build
 118   --disable-ffprobe        disable ffprobe build
 119   --disable-ffserver       disable ffserver build
 120
 121 Documentation options:
 122   --disable-doc            do not build documentation
 123   --disable-htmlpages      do not build HTML documentation pages
 124   --disable-manpages       do not build man documentation pages
 125   --disable-podpages       do not build POD documentation pages
 126   --disable-txtpages       do not build text documentation pages
 127
 128 Component options:
 129   --disable-avdevice       disable libavdevice build
 130   --disable-avcodec        disable libavcodec build
 131   --disable-avformat       disable libavformat build
 132   --disable-swresample     disable libswresample build
 133   --disable-swscale        disable libswscale build
 134   --disable-postproc       disable libpostproc build
 135   --disable-avfilter       disable libavfilter build
 136   --enable-avresample      enable libavresample build [no]
 137   --disable-pthreads       disable pthreads [autodetect]
 138   --disable-w32threads     disable Win32 threads [autodetect]
 139   --disable-os2threads     disable OS/2 threads [autodetect]
 140   --disable-network        disable network support [no]
 141   --disable-dct            disable DCT code
 142   --disable-dwt            disable DWT code
 143   --disable-error-resilience disable error resilience code
 144   --disable-lsp            disable LSP code
 145   --disable-lzo            disable LZO decoder code
 146   --disable-mdct           disable MDCT code
 147   --disable-rdft           disable RDFT code
 148   --disable-fft            disable FFT code
 149   --disable-faan           disable floating point AAN (I)DCT code
 150   --disable-pixelutils     disable pixel utils in libavutil
 151
 152 Individual component options:
 153   --disable-everything     disable all components listed below
 154   --disable-encoder=NAME   disable encoder NAME
 155   --enable-encoder=NAME    enable encoder NAME
 156   --disable-encoders       disable all encoders
 157   --disable-decoder=NAME   disable decoder NAME
 158   --enable-decoder=NAME    enable decoder NAME
 159   --disable-decoders       disable all decoders
 160   --disable-hwaccel=NAME   disable hwaccel NAME
 161   --enable-hwaccel=NAME    enable hwaccel NAME
 162   --disable-hwaccels       disable all hwaccels
 163   --disable-muxer=NAME     disable muxer NAME
 164   --enable-muxer=NAME      enable muxer NAME
 165   --disable-muxers         disable all muxers
 166   --disable-demuxer=NAME   disable demuxer NAME
 167   --enable-demuxer=NAME    enable demuxer NAME
 168   --disable-demuxers       disable all demuxers
 169   --enable-parser=NAME     enable parser NAME
 170   --disable-parser=NAME    disable parser NAME
 171   --disable-parsers        disable all parsers
 172   --enable-bsf=NAME        enable bitstream filter NAME
 173   --disable-bsf=NAME       disable bitstream filter NAME
 174   --disable-bsfs           disable all bitstream filters
 175   --enable-protocol=NAME   enable protocol NAME
 176   --disable-protocol=NAME  disable protocol NAME
 177   --disable-protocols      disable all protocols
 178   --enable-indev=NAME      enable input device NAME
 179   --disable-indev=NAME     disable input device NAME
 180   --disable-indevs         disable input devices
 181   --enable-outdev=NAME     enable output device NAME
 182   --disable-outdev=NAME    disable output device NAME
 183   --disable-outdevs        disable output devices
 184   --disable-devices        disable all devices
 185   --enable-filter=NAME     enable filter NAME
 186   --disable-filter=NAME    disable filter NAME
 187   --disable-filters        disable all filters
 188   --disable-v4l2_m2m       disable V4L2 mem2mem code [autodetect]
 189
 190 External library support:
 191
 192   Using any of the following switches will allow FFmpeg to link to the
 193   corresponding external library. All the components depending on that library
 194   will become enabled, if all their other dependencies are met and they are not
 195   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 196   libwavpack and allow the libwavpack encoder to be built, unless it is
 197   specifically disabled with --disable-encoder=libwavpack.
 198
 199   Note that only the system libraries are auto-detected. All the other external
 200   libraries must be explicitly enabled.
 201
 202   Also note that the following help text describes the purpose of the libraries
 203   themselves, not all their features will necessarily be usable by FFmpeg.
 204
 205   --disable-alsa           disable ALSA support [autodetect]
 206   --disable-appkit         disable Apple AppKit framework [autodetect]
 207   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
 208   --enable-avisynth        enable reading of AviSynth script files [no]
 209   --disable-bzlib          disable bzlib [autodetect]
 210   --disable-coreimage      disable Apple CoreImage framework [autodetect]
 211   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 212   --enable-frei0r          enable frei0r video filtering [no]
 213   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 214                            if openssl, librtmp or gmp is not used [no]
 215   --enable-gmp             enable gmp, needed for rtmp(t)e support
 216                            if openssl or librtmp is not used [no]
 217   --enable-gnutls          enable gnutls, needed for https support
 218                            if openssl is not used [no]
 219   --disable-iconv          disable iconv [autodetect]
 220   --disable-jack           disable libjack support [autodetect]
 221   --enable-jni             enable JNI support [no]
 222   --enable-ladspa          enable LADSPA audio filtering [no]
 223   --enable-libass          enable libass subtitles rendering,
 224                            needed for subtitles and ass filter [no]
 225   --enable-libbluray       enable BluRay reading using libbluray [no]
 226   --enable-libbs2b         enable bs2b DSP library [no]
 227   --enable-libcaca         enable textual display using libcaca [no]
 228   --enable-libcelt         enable CELT decoding via libcelt [no]
 229   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 230   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 231                            and libraw1394 [no]
 232   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 233   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 234   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 235   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 236   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 237   --enable-libgme          enable Game Music Emu via libgme [no]
 238   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 239   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 240   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 241   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 242   --enable-libmodplug      enable ModPlug via libmodplug [no]
 243   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 244   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 245   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 246   --enable-libopencv       enable video filtering via libopencv [no]
 247   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 248   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 249   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 250   --enable-libopus         enable Opus de/encoding via libopus [no]
 251   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 252   --enable-librsvg         enable SVG rasterization via librsvg [no]
 253   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 254   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 255   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 256   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 257   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 258   --enable-libsoxr         enable Include libsoxr resampling [no]
 259   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 260   --enable-libssh          enable SFTP protocol via libssh [no]
 261   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 262   --enable-libtheora       enable Theora encoding via libtheora [no]
 263   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 264   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 265   --enable-libvidstab      enable video stabilization using vid.stab [no]
 266   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 267   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 268   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 269                            native implementation exists [no]
 270   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 271   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 272   --enable-libwebp         enable WebP encoding via libwebp [no]
 273   --enable-libx264         enable H.264 encoding via x264 [no]
 274   --enable-libx265         enable HEVC encoding via x265 [no]
 275   --enable-libxavs         enable AVS encoding via xavs [no]
 276   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 277   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 278   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 279   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 280   --enable-libxvid         enable Xvid encoding via xvidcore,
 281                            native MPEG-4/Xvid encoder exists [no]
 282   --enable-libxml2         enable XML parsing using the C library libxml2 [no]
 283   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 284   --enable-libzmq          enable message passing via libzmq [no]
 285   --enable-libzvbi         enable teletext support via libzvbi [no]
 286   --disable-lzma           disable lzma [autodetect]
 287   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 288   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
 289   --enable-mediacodec      enable Android MediaCodec support [no]
 290   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 291   --enable-openal          enable OpenAL 1.1 capture support [no]
 292   --enable-opencl          enable OpenCL code
 293   --enable-opengl          enable OpenGL rendering [no]
 294   --enable-openssl         enable openssl, needed for https support
 295                            if gnutls is not used [no]
 296   --disable-sndio          disable sndio support [autodetect]
 297   --disable-schannel       disable SChannel SSP, needed for TLS support on
 298                            Windows if openssl and gnutls are not used [autodetect]
 299   --disable-sdl2           disable sdl2 [autodetect]
 300   --disable-securetransport disable Secure Transport, needed for TLS support
 301                            on OSX if openssl and gnutls are not used [autodetect]
 302   --disable-xlib           disable xlib [autodetect]
 303   --disable-zlib           disable zlib [autodetect]
 304
 305   The following libraries provide various hardware acceleration features:
 306   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 307   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
 308   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
 309   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 310   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 311   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 312   --enable-libdrm          enable DRM code (Linux) [no]
 313   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 314   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 315   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 316   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 317   --enable-omx             enable OpenMAX IL code [no]
 318   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 319   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 320   --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
 321   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 322   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 323
 324 Toolchain options:
 325   --arch=ARCH              select architecture [$arch]
 326   --cpu=CPU                select the minimum required CPU (affects
 327                            instruction selection, may crash on older CPUs)
 328   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 329   --progs-suffix=SUFFIX    program name suffix []
 330   --enable-cross-compile   assume a cross-compiler is used
 331   --sysroot=PATH           root of cross-build tree
 332   --sysinclude=PATH        location of cross-build system headers
 333   --target-os=OS           compiler targets OS [$target_os]
 334   --target-exec=CMD        command to run executables on target
 335   --target-path=DIR        path to view of build directory on target
 336   --target-samples=DIR     path to samples directory on target
 337   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 338   --toolchain=NAME         set tool defaults according to NAME
 339   --nm=NM                  use nm tool NM [$nm_default]
 340   --ar=AR                  use archive tool AR [$ar_default]
 341   --as=AS                  use assembler AS [$as_default]
 342   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 343   --strip=STRIP            use strip tool STRIP [$strip_default]
 344   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 345   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 346   --cc=CC                  use C compiler CC [$cc_default]
 347   --cxx=CXX                use C compiler CXX [$cxx_default]
 348   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 349   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 350   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 351   --ld=LD                  use linker LD [$ld_default]
 352   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 353   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 354   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 355   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 356   --host-cc=HOSTCC         use host C compiler HOSTCC
 357   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 358   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 359   --host-ld=HOSTLD         use host linker HOSTLD
 360   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 361   --host-libs=HLIBS        use libs HLIBS when linking for host
 362   --host-os=OS             compiler host OS [$target_os]
 363   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 364   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 365   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 366   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 367   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 368   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 369   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 370   --extra-version=STRING   version string suffix []
 371   --optflags=OPTFLAGS      override optimization-related compiler flags
 372   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 373   --build-suffix=SUFFIX    library name suffix []
 374   --enable-pic             build position-independent code
 375   --enable-thumb           compile for Thumb instruction set
 376   --enable-lto             use link-time optimization
 377   --env="ENV=override"     override the environment variables
 378
 379 Advanced options (experts only):
 380   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 381   --custom-allocator=NAME  use a supported custom allocator
 382   --disable-symver         disable symbol versioning
 383   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 384   --disable-safe-bitstream-reader
 385                            disable buffer boundary checking in bitreaders
 386                            (faster, but may crash)
 387   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 388
 389 Optimization options (experts only):
 390   --disable-asm            disable all assembly optimizations
 391   --disable-altivec        disable AltiVec optimizations
 392   --disable-vsx            disable VSX optimizations
 393   --disable-power8         disable POWER8 optimizations
 394   --disable-amd3dnow       disable 3DNow! optimizations
 395   --disable-amd3dnowext    disable 3DNow! extended optimizations
 396   --disable-mmx            disable MMX optimizations
 397   --disable-mmxext         disable MMXEXT optimizations
 398   --disable-sse            disable SSE optimizations
 399   --disable-sse2           disable SSE2 optimizations
 400   --disable-sse3           disable SSE3 optimizations
 401   --disable-ssse3          disable SSSE3 optimizations
 402   --disable-sse4           disable SSE4 optimizations
 403   --disable-sse42          disable SSE4.2 optimizations
 404   --disable-avx            disable AVX optimizations
 405   --disable-xop            disable XOP optimizations
 406   --disable-fma3           disable FMA3 optimizations
 407   --disable-fma4           disable FMA4 optimizations
 408   --disable-avx2           disable AVX2 optimizations
 409   --disable-aesni          disable AESNI optimizations
 410   --disable-armv5te        disable armv5te optimizations
 411   --disable-armv6          disable armv6 optimizations
 412   --disable-armv6t2        disable armv6t2 optimizations
 413   --disable-vfp            disable VFP optimizations
 414   --disable-neon           disable NEON optimizations
 415   --disable-inline-asm     disable use of inline assembly
 416   --disable-x86asm         disable use of standalone x86 assembly
 417   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 418   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 419   --disable-msa            disable MSA optimizations
 420   --disable-mipsfpu        disable floating point MIPS optimizations
 421   --disable-mmi            disable Loongson SIMD optimizations
 422   --disable-fast-unaligned consider unaligned accesses slow
 423
 424 Developer options (useful when working on FFmpeg itself):
 425   --disable-debug          disable debugging symbols
 426   --enable-debug=LEVEL     set the debug level [$debuglevel]
 427   --disable-optimizations  disable compiler optimizations
 428   --enable-extra-warnings  enable more compiler warnings
 429   --disable-stripping      disable stripping of executables and shared libraries
 430   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 431                            2 causes a slowdown at runtime.
 432   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 433   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 434                            leaks and errors, using the specified valgrind binary.
 435                            Cannot be combined with --target-exec
 436   --enable-ftrapv          Trap arithmetic overflows
 437   --samples=PATH           location of test samples for FATE, if not set use
 438                            \$FATE_SAMPLES at make invocation time.
 439   --enable-neon-clobber-test check NEON registers for clobbering (should be
 440                            used only for debugging purposes)
 441   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 442                            should be used only for debugging purposes)
 443   --enable-random          randomly enable/disable components
 444   --disable-random
 445   --enable-random=LIST     randomly enable/disable specific components or
 446   --disable-random=LIST    component groups. LIST is a comma-separated list
 447                            of NAME[:PROB] entries where NAME is a component
 448                            (group) and PROB the probability associated with
 449                            NAME (default 0.5).
 450   --random-seed=VALUE      seed value for --enable/disable-random
 451   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 452                            (only applies to --disable-optimizations builds)
 453   --enable-osfuzz          Enable building fuzzer tool
 454   --libfuzzer=PATH         path to libfuzzer
 455   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 456                            in the name) of tests whose result is ignored
 457   --enable-linux-perf      enable Linux Performance Monitor API
 458
 459 NOTE: Object files are built at the place where configure is launched.
 460 EOF
 461   exit 0
 462 }
 463
 464 quotes='""'
 465 if test -t 1 && which tput >/dev/null 2>&1; then
 466     ncolors=$(tput colors)
 467     if test -n "$ncolors" && test $ncolors -ge 8; then
 468         bold_color=$(tput bold)
 469         warn_color=$(tput setaf 3)
 470         error_color=$(tput setaf 1)
 471         reset_color=$(tput sgr0)
 472     fi
 473     # 72 used instead of 80 since that's the default of pr
 474     ncols=$(tput cols)
 475 fi
 476 : ${ncols:=72}
 477
 478 log(){
 479     echo "$@" >> $logfile
 480 }
 481
 482 log_file(){
 483     log BEGIN $1
 484     pr -n -t $1 >> $logfile
 485     log END $1
 486 }
 487
 488 warn(){
 489     log "WARNING: $*"
 490     WARNINGS="${WARNINGS}WARNING: $*\n"
 491 }
 492
 493 die(){
 494     log "$@"
 495     echo "$error_color$bold_color$@$reset_color"
 496     cat <<EOF
 497
 498 If you think configure made a mistake, make sure you are using the latest
 499 version from Git.  If the latest version fails, report the problem to the
 500 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 501 EOF
 502     if disabled logging; then
 503         cat <<EOF
 504 Rerun configure with logging enabled (do not use --disable-logging), and
 505 include the log this produces with your report.
 506 EOF
 507     else
 508         cat <<EOF
 509 Include the log file "$logfile" produced by configure as this will help
 510 solve the problem.
 511 EOF
 512     fi
 513     exit 1
 514 }
 515
 516 # Avoid locale weirdness, besides we really just want to translate ASCII.
 517 toupper(){
 518     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 519 }
 520
 521 tolower(){
 522     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 523 }
 524
 525 c_escape(){
 526     echo "$*" | sed 's/["\\]/\\\0/g'
 527 }
 528
 529 sh_quote(){
 530     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 531     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 532     echo "$v"
 533 }
 534
 535 cleanws(){
 536     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 537 }
 538
 539 filter(){
 540     pat=$1
 541     shift
 542     for v; do
 543         eval "case $v in $pat) printf '%s ' $v ;; esac"
 544     done
 545 }
 546
 547 filter_out(){
 548     pat=$1
 549     shift
 550     for v; do
 551         eval "case $v in $pat) ;; *) printf '%s ' $v ;; esac"
 552     done
 553 }
 554
 555 map(){
 556     m=$1
 557     shift
 558     for v; do eval $m; done
 559 }
 560
 561 add_suffix(){
 562     suffix=$1
 563     shift
 564     for v; do echo ${v}${suffix}; done
 565 }
 566
 567 set_all(){
 568     value=$1
 569     shift
 570     for var in $*; do
 571         eval $var=$value
 572     done
 573 }
 574
 575 set_weak(){
 576     value=$1
 577     shift
 578     for var; do
 579         eval : \${$var:=$value}
 580     done
 581 }
 582
 583 sanitize_var_name(){
 584     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 585 }
 586
 587 set_safe(){
 588     var=$1
 589     shift
 590     eval $(sanitize_var_name "$var")='$*'
 591 }
 592
 593 get_safe(){
 594     eval echo \$$(sanitize_var_name "$1")
 595 }
 596
 597 pushvar(){
 598     for pvar in $*; do
 599         eval level=\${${pvar}_level:=0}
 600         eval ${pvar}_${level}="\$$pvar"
 601         eval ${pvar}_level=$(($level+1))
 602     done
 603 }
 604
 605 popvar(){
 606     for pvar in $*; do
 607         eval level=\${${pvar}_level:-0}
 608         test $level = 0 && continue
 609         eval level=$(($level-1))
 610         eval $pvar="\${${pvar}_${level}}"
 611         eval ${pvar}_level=$level
 612         eval unset ${pvar}_${level}
 613     done
 614 }
 615
 616 request(){
 617     for var in $*; do
 618         eval ${var}_requested=yes
 619         eval $var=
 620     done
 621 }
 622
 623 enable(){
 624     set_all yes $*
 625 }
 626
 627 disable(){
 628     set_all no $*
 629 }
 630
 631 enable_weak(){
 632     set_weak yes $*
 633 }
 634
 635 disable_weak(){
 636     set_weak no $*
 637 }
 638
 639 enable_safe(){
 640     for var; do
 641         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 642     done
 643 }
 644
 645 disable_safe(){
 646     for var; do
 647         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 648     done
 649 }
 650
 651 do_enable_deep(){
 652     for var; do
 653         enabled $var && continue
 654         eval sel="\$${var}_select"
 655         eval sgs="\$${var}_suggest"
 656         pushvar var sgs
 657         enable_deep $sel
 658         popvar sgs
 659         enable_deep_weak $sgs
 660         popvar var
 661     done
 662 }
 663
 664 enable_deep(){
 665     do_enable_deep $*
 666     enable $*
 667 }
 668
 669 enable_deep_weak(){
 670     for var; do
 671         disabled $var && continue
 672         pushvar var
 673         do_enable_deep $var
 674         popvar var
 675         enable_weak $var
 676     done
 677 }
 678
 679 requested(){
 680     test "${1#!}" = "$1" && op='=' || op=!=
 681     eval test "x\$${1#!}_requested" $op "xyes"
 682 }
 683
 684 enabled(){
 685     test "${1#!}" = "$1" && op='=' || op=!=
 686     eval test "x\$${1#!}" $op "xyes"
 687 }
 688
 689 disabled(){
 690     test "${1#!}" = "$1" && op='=' || op=!=
 691     eval test "x\$${1#!}" $op "xno"
 692 }
 693
 694 enabled_all(){
 695     for opt; do
 696         enabled $opt || return 1
 697     done
 698 }
 699
 700 disabled_all(){
 701     for opt; do
 702         disabled $opt || return 1
 703     done
 704 }
 705
 706 enabled_any(){
 707     for opt; do
 708         enabled $opt && return 0
 709     done
 710 }
 711
 712 disabled_any(){
 713     for opt; do
 714         disabled $opt && return 0
 715     done
 716     return 1
 717 }
 718
 719 set_default(){
 720     for opt; do
 721         eval : \${$opt:=\$${opt}_default}
 722     done
 723 }
 724
 725 is_in(){
 726     value=$1
 727     shift
 728     for var in $*; do
 729         [ $var = $value ] && return 0
 730     done
 731     return 1
 732 }
 733
 734 do_check_deps(){
 735     for cfg; do
 736         cfg="${cfg#!}"
 737         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 738         disabled ${cfg}_checking && continue
 739         enable ${cfg}_checking
 740         append allopts $cfg
 741
 742         eval dep_all="\$${cfg}_deps"
 743         eval dep_any="\$${cfg}_deps_any"
 744         eval dep_sel="\$${cfg}_select"
 745         eval dep_sgs="\$${cfg}_suggest"
 746         eval dep_ifa="\$${cfg}_if"
 747         eval dep_ifn="\$${cfg}_if_any"
 748
 749         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 750         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 751         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 752
 753         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 754         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 755         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 756         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 757         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 758
 759         if enabled $cfg; then
 760             enable_deep $dep_sel
 761             enable_deep_weak $dep_sgs
 762         fi
 763
 764         disable ${cfg}_checking
 765     done
 766 }
 767
 768 check_deps(){
 769     unset allopts
 770
 771     do_check_deps "$@"
 772
 773     for cfg in $allopts; do
 774         enabled $cfg || continue
 775         eval dep_extralibs="\$${cfg}_extralibs"
 776         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 777     done
 778 }
 779
 780 print_config(){
 781     pfx=$1
 782     files=$2
 783     shift 2
 784     map 'eval echo "$v \${$v:-no}"' "$@" |
 785     awk "BEGIN { split(\"$files\", files) }
 786         {
 787             c = \"$pfx\" toupper(\$1);
 788             v = \$2;
 789             sub(/yes/, 1, v);
 790             sub(/no/,  0, v);
 791             for (f in files) {
 792                 file = files[f];
 793                 if (file ~ /\\.h\$/) {
 794                     printf(\"#define %s %d\\n\", c, v) >>file;
 795                 } else if (file ~ /\\.asm\$/) {
 796                     printf(\"%%define %s %d\\n\", c, v) >>file;
 797                 } else if (file ~ /\\.mak\$/) {
 798                     n = -v ? \"\" : \"!\";
 799                     printf(\"%s%s=yes\\n\", n, c) >>file;
 800                 } else if (file ~ /\\.texi\$/) {
 801                     pre = -v ? \"\" : \"@c \";
 802                     yesno = \$2;
 803                     c2 = tolower(c);
 804                     gsub(/_/, \"-\", c2);
 805                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 806                 }
 807             }
 808         }"
 809 }
 810
 811 print_enabled(){
 812     suf=$1
 813     shift
 814     for v; do
 815         enabled $v && printf "%s\n" ${v%$suf}
 816     done
 817 }
 818
 819 append(){
 820     var=$1
 821     shift
 822     eval "$var=\"\$$var $*\""
 823 }
 824
 825 prepend(){
 826     var=$1
 827     shift
 828     eval "$var=\"$* \$$var\""
 829 }
 830
 831 unique(){
 832     var=$1
 833     uniq_list=""
 834     for tok in $(eval echo \$$var); do
 835         uniq_list="$(filter_out $tok $uniq_list) $tok"
 836     done
 837     eval "$var=\"${uniq_list}\""
 838 }
 839
 840 add_cppflags(){
 841     append CPPFLAGS "$@"
 842 }
 843
 844 add_cflags(){
 845     append CFLAGS $($cflags_filter "$@")
 846 }
 847
 848 add_cflags_headers(){
 849     append CFLAGS_HEADERS $($cflags_filter "$@")
 850 }
 851
 852 add_cxxflags(){
 853     append CXXFLAGS $($cflags_filter "$@")
 854 }
 855
 856 add_asflags(){
 857     append ASFLAGS $($asflags_filter "$@")
 858 }
 859
 860 add_objcflags(){
 861     append OBJCFLAGS $($objcflags_filter "$@")
 862 }
 863
 864 add_ldflags(){
 865     append LDFLAGS $($ldflags_filter "$@")
 866 }
 867
 868 add_ldexeflags(){
 869     append LDEXEFLAGS $($ldflags_filter "$@")
 870 }
 871
 872 add_ldlibflags(){
 873     append LDLIBFLAGS $($ldflags_filter "$@")
 874 }
 875
 876 add_stripflags(){
 877     append ASMSTRIPFLAGS "$@"
 878 }
 879
 880 add_extralibs(){
 881     prepend extralibs $($ldflags_filter "$@")
 882 }
 883
 884 add_host_cppflags(){
 885     append host_cppflags "$@"
 886 }
 887
 888 add_host_cflags(){
 889     append host_cflags $($host_cflags_filter "$@")
 890 }
 891
 892 add_host_ldflags(){
 893     append host_ldflags $($host_ldflags_filter "$@")
 894 }
 895
 896 add_compat(){
 897     append compat_objs $1
 898     shift
 899     map 'add_cppflags -D$v' "$@"
 900 }
 901
 902 check_cmd(){
 903     log "$@"
 904     "$@" >> $logfile 2>&1
 905 }
 906
 907 check_stat(){
 908     log check_stat "$@"
 909     stat "$1" >> $logfile 2>&1
 910 }
 911
 912 cc_o(){
 913     eval printf '%s\\n' $CC_O
 914 }
 915
 916 cc_e(){
 917     eval printf '%s\\n' $CC_E
 918 }
 919
 920 check_cc(){
 921     log check_cc "$@"
 922     cat > $TMPC
 923     log_file $TMPC
 924     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 925 }
 926
 927 check_cxx(){
 928     log check_cxx "$@"
 929     cat > $TMPCPP
 930     log_file $TMPCPP
 931     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 932 }
 933
 934 check_objcc(){
 935     log check_objcc "$@"
 936     cat > $TMPM
 937     log_file $TMPM
 938     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 939 }
 940
 941 check_cpp(){
 942     log check_cpp "$@"
 943     cat > $TMPC
 944     log_file $TMPC
 945     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 946 }
 947
 948 as_o(){
 949     eval printf '%s\\n' $AS_O
 950 }
 951
 952 check_as(){
 953     log check_as "$@"
 954     cat > $TMPS
 955     log_file $TMPS
 956     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 957 }
 958
 959 check_inline_asm(){
 960     log check_inline_asm "$@"
 961     name="$1"
 962     code="$2"
 963     shift 2
 964     disable $name
 965     check_cc "$@" <<EOF && enable $name
 966 void foo(void){ __asm__ volatile($code); }
 967 EOF
 968 }
 969
 970 check_inline_asm_flags(){
 971     log check_inline_asm_flags "$@"
 972     name="$1"
 973     code="$2"
 974     flags=''
 975     shift 2
 976     while [ "$1" != "" ]; do
 977       append flags $1
 978       shift
 979     done;
 980     disable $name
 981     cat > $TMPC <<EOF
 982 void foo(void){ __asm__ volatile($code); }
 983 EOF
 984     log_file $TMPC
 985     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 986     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 987 }
 988
 989 check_insn(){
 990     log check_insn "$@"
 991     check_inline_asm ${1}_inline "\"$2\""
 992     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 993 }
 994
 995 check_x86asm(){
 996     log check_x86asm "$@"
 997     echo "$1" > $TMPS
 998     log_file $TMPS
 999     shift 1
1000     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1001 }
1002
1003 ld_o(){
1004     eval printf '%s\\n' $LD_O
1005 }
1006
1007 check_ld(){
1008     log check_ld "$@"
1009     type=$1
1010     shift 1
1011     flags=$(filter_out '-l*|*.so' $@)
1012     libs=$(filter '-l*|*.so' $@)
1013     check_$type $($cflags_filter $flags) || return
1014     flags=$($ldflags_filter $flags)
1015     libs=$($ldflags_filter $libs)
1016     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1017 }
1018
1019 print_include(){
1020     hdr=$1
1021     test "${hdr%.h}" = "${hdr}" &&
1022         echo "#include $hdr"    ||
1023         echo "#include <$hdr>"
1024 }
1025
1026 check_code(){
1027     log check_code "$@"
1028     check=$1
1029     headers=$2
1030     code=$3
1031     shift 3
1032     {
1033         for hdr in $headers; do
1034             print_include $hdr
1035         done
1036         echo "int main(void) { $code; return 0; }"
1037     } | check_$check "$@"
1038 }
1039
1040 check_cppflags(){
1041     log check_cppflags "$@"
1042     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1043 int x;
1044 EOF
1045 }
1046
1047 test_cflags(){
1048     log test_cflags "$@"
1049     set -- $($cflags_filter "$@")
1050     check_cc "$@" <<EOF
1051 int x;
1052 EOF
1053 }
1054
1055 check_cflags(){
1056     log check_cflags "$@"
1057     test_cflags "$@" && add_cflags "$@"
1058 }
1059
1060 check_cxxflags(){
1061     log check_cxxflags "$@"
1062     set -- $($cflags_filter "$@")
1063     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1064 int x;
1065 EOF
1066 }
1067
1068 test_objcflags(){
1069     log test_objcflags "$@"
1070     set -- $($objcflags_filter "$@")
1071     check_objcc "$@" <<EOF
1072 int x;
1073 EOF
1074 }
1075
1076 check_objcflags(){
1077     log check_objcflags "$@"
1078     test_objcflags "$@" && add_objcflags "$@"
1079 }
1080
1081 test_ldflags(){
1082     log test_ldflags "$@"
1083     check_ld "cc" "$@" <<EOF
1084 int main(void){ return 0; }
1085 EOF
1086 }
1087
1088 check_ldflags(){
1089     log check_ldflags "$@"
1090     test_ldflags "$@" && add_ldflags "$@"
1091 }
1092
1093 test_stripflags(){
1094     log test_stripflags "$@"
1095     # call check_cc to get a fresh TMPO
1096     check_cc <<EOF
1097 int main(void) { return 0; }
1098 EOF
1099     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1100 }
1101
1102 check_stripflags(){
1103     log check_stripflags "$@"
1104     test_stripflags "$@" && add_stripflags "$@"
1105 }
1106
1107 check_header(){
1108     log check_header "$@"
1109     header=$1
1110     shift
1111     disable_safe $header
1112     check_cpp "$@" <<EOF && enable_safe $header
1113 #include <$header>
1114 int x;
1115 EOF
1116 }
1117
1118 check_header_objcc(){
1119     log check_header_objcc "$@"
1120     rm -f -- "$TMPO"
1121     header=$1
1122     shift
1123     disable_safe $header
1124     {
1125        echo "#include <$header>"
1126        echo "int main(void) { return 0; }"
1127     } | check_objcc && check_stat "$TMPO" && enable_safe $header
1128 }
1129
1130 check_apple_framework(){
1131     log check_apple_framework "$@"
1132     framework="$1"
1133     name="$(tolower $framework)"
1134     header="${framework}/${framework}.h"
1135     disable $name
1136     check_header_objcc $header && enable $name && add_extralibs "-framework $framework"
1137 }
1138
1139 check_func(){
1140     log check_func "$@"
1141     func=$1
1142     shift
1143     disable $func
1144     check_ld "cc" "$@" <<EOF && enable $func
1145 extern int $func();
1146 int main(void){ $func(); }
1147 EOF
1148 }
1149
1150 check_complexfunc(){
1151     log check_complexfunc "$@"
1152     func=$1
1153     narg=$2
1154     shift 2
1155     test $narg = 2 && args="f, g" || args="f * I"
1156     disable $func
1157     check_ld "cc" "$@" <<EOF && enable $func
1158 #include <complex.h>
1159 #include <math.h>
1160 float foo(complex float f, complex float g) { return $func($args); }
1161 int main(void){ return (int) foo; }
1162 EOF
1163 }
1164
1165 check_mathfunc(){
1166     log check_mathfunc "$@"
1167     func=$1
1168     narg=$2
1169     shift 2
1170     test $narg = 2 && args="f, g" || args="f"
1171     disable $func
1172     check_ld "cc" "$@" <<EOF && enable $func
1173 #include <math.h>
1174 float foo(float f, float g) { return $func($args); }
1175 int main(void){ return (int) foo; }
1176 EOF
1177 }
1178
1179 check_func_headers(){
1180     log check_func_headers "$@"
1181     headers=$1
1182     funcs=$2
1183     shift 2
1184     {
1185         for hdr in $headers; do
1186             print_include $hdr
1187         done
1188         echo "#include <stdint.h>"
1189         for func in $funcs; do
1190             echo "long check_$func(void) { return (long) $func; }"
1191         done
1192         echo "int main(void) { int ret = 0;"
1193         # LTO could optimize out the test functions without this
1194         for func in $funcs; do
1195             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1196         done
1197         echo "return ret; }"
1198     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1199 }
1200
1201 check_class_headers_cpp(){
1202     log check_class_headers_cpp "$@"
1203     headers=$1
1204     classes=$2
1205     shift 2
1206     {
1207         for hdr in $headers; do
1208             echo "#include <$hdr>"
1209         done
1210         echo "int main(void) { "
1211         i=1
1212         for class in $classes; do
1213             echo "$class obj$i;"
1214             i=$(expr $i + 1)
1215         done
1216         echo "return 0; }"
1217     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1218 }
1219
1220 check_cpp_condition(){
1221     log check_cpp_condition "$@"
1222     header=$1
1223     condition=$2
1224     shift 2
1225     check_cpp "$@" <<EOF
1226 #include <$header>
1227 #if !($condition)
1228 #error "unsatisfied condition: $condition"
1229 #endif
1230 EOF
1231 }
1232
1233 test_cflags_cc(){
1234     log test_cflags_cc "$@"
1235     flags=$1
1236     header=$2
1237     condition=$3
1238     shift 3
1239     set -- $($cflags_filter "$flags")
1240     check_cc "$@" <<EOF
1241 #include <$header>
1242 #if !($condition)
1243 #error "unsatisfied condition: $condition"
1244 #endif
1245 EOF
1246 }
1247
1248 check_lib(){
1249     log check_lib "$@"
1250     name="$1"
1251     headers="$2"
1252     funcs="$3"
1253     shift 3
1254     disable $name
1255     check_func_headers "$headers" "$funcs" "$@" &&
1256         enable $name && add_extralibs "$@"
1257 }
1258
1259 check_lib_cpp(){
1260     log check_lib_cpp "$@"
1261     headers="$1"
1262     classes="$2"
1263     shift 2
1264     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1265 }
1266
1267 check_pkg_config(){
1268     log check_pkg_config "$@"
1269     pkg_version="$1"
1270     pkg="${1%% *}"
1271     headers="$2"
1272     funcs="$3"
1273     shift 3
1274     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1275     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1276     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1277     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1278         set_safe "${pkg}_cflags"    $pkg_cflags &&
1279         set_safe "${pkg}_extralibs" $pkg_libs
1280 }
1281
1282 check_exec(){
1283     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1284 }
1285
1286 check_exec_crash(){
1287     log check_exec_crash "$@"
1288     code=$(cat)
1289
1290     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1291     # are safe but may not be available everywhere.  Thus we use
1292     # raise(SIGTERM) instead.  The check is run in a subshell so we
1293     # can redirect the "Terminated" message from the shell.  SIGBUS
1294     # is not defined by standard C so it is used conditionally.
1295
1296     (check_exec "$@") >> $logfile 2>&1 <<EOF
1297 #include <signal.h>
1298 static void sighandler(int sig){
1299     raise(SIGTERM);
1300 }
1301 int foo(void){
1302     $code
1303 }
1304 int (*func_ptr)(void) = foo;
1305 int main(void){
1306     signal(SIGILL, sighandler);
1307     signal(SIGFPE, sighandler);
1308     signal(SIGSEGV, sighandler);
1309 #ifdef SIGBUS
1310     signal(SIGBUS, sighandler);
1311 #endif
1312     return func_ptr();
1313 }
1314 EOF
1315 }
1316
1317 check_type(){
1318     log check_type "$@"
1319     headers=$1
1320     type=$2
1321     shift 2
1322     disable_safe "$type"
1323     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1324 }
1325
1326 check_struct(){
1327     log check_struct "$@"
1328     headers=$1
1329     struct=$2
1330     member=$3
1331     shift 3
1332     disable_safe "${struct}_${member}"
1333     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1334         enable_safe "${struct}_${member}"
1335 }
1336
1337 check_builtin(){
1338     log check_builtin "$@"
1339     name=$1
1340     headers=$2
1341     builtin=$3
1342     shift 3
1343     disable "$name"
1344     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1345 }
1346
1347 check_compile_assert(){
1348     log check_compile_assert "$@"
1349     name=$1
1350     headers=$2
1351     condition=$3
1352     shift 3
1353     disable "$name"
1354     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1355 }
1356
1357 require(){
1358     log require "$@"
1359     name_version="$1"
1360     name="${1%% *}"
1361     headers="$2"
1362     func="$3"
1363     shift 3
1364     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1365 }
1366
1367 require_cpp(){
1368     name="$1"
1369     headers="$2"
1370     classes="$3"
1371     shift 3
1372     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1373 }
1374
1375 use_pkg_config(){
1376     log use_pkg_config "$@"
1377     pkg="$1"
1378     check_pkg_config "$@" || return 1
1379     add_cflags    $(get_safe "${pkg}_cflags")
1380     add_extralibs $(get_safe "${pkg}_extralibs")
1381 }
1382
1383 require_pkg_config(){
1384     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1385 }
1386
1387 hostcc_e(){
1388     eval printf '%s\\n' $HOSTCC_E
1389 }
1390
1391 hostcc_o(){
1392     eval printf '%s\\n' $HOSTCC_O
1393 }
1394
1395 check_host_cc(){
1396     log check_host_cc "$@"
1397     cat > $TMPC
1398     log_file $TMPC
1399     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1400 }
1401
1402 check_host_cpp(){
1403     log check_host_cpp "$@"
1404     cat > $TMPC
1405     log_file $TMPC
1406     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1407 }
1408
1409 check_host_cppflags(){
1410     log check_host_cppflags "$@"
1411     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1412 int x;
1413 EOF
1414 }
1415
1416 check_host_cflags(){
1417     log check_host_cflags "$@"
1418     set -- $($host_cflags_filter "$@")
1419     check_host_cc "$@" <<EOF && append host_cflags "$@"
1420 int x;
1421 EOF
1422 }
1423
1424 check_host_cpp_condition(){
1425     log check_host_cpp_condition "$@"
1426     header=$1
1427     condition=$2
1428     shift 2
1429     check_host_cpp "$@" <<EOF
1430 #include <$header>
1431 #if !($condition)
1432 #error "unsatisfied condition: $condition"
1433 #endif
1434 EOF
1435 }
1436
1437 cp_if_changed(){
1438     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1439     mkdir -p "$(dirname $2)"
1440     cp -f "$1" "$2"
1441 }
1442
1443 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1444 # system-dependent things.
1445
1446 AVCODEC_COMPONENTS="
1447     bsfs
1448     decoders
1449     encoders
1450     hwaccels
1451     parsers
1452 "
1453
1454 AVDEVICE_COMPONENTS="
1455     indevs
1456     outdevs
1457 "
1458
1459 AVFILTER_COMPONENTS="
1460     filters
1461 "
1462
1463 AVFORMAT_COMPONENTS="
1464     demuxers
1465     muxers
1466     protocols
1467 "
1468
1469 AVRESAMPLE_COMPONENTS=""
1470
1471 AVUTIL_COMPONENTS=""
1472
1473 COMPONENT_LIST="
1474     $AVCODEC_COMPONENTS
1475     $AVDEVICE_COMPONENTS
1476     $AVFILTER_COMPONENTS
1477     $AVFORMAT_COMPONENTS
1478     $AVRESAMPLE_COMPONENTS
1479     $AVUTIL_COMPONENTS
1480 "
1481
1482 EXAMPLE_LIST="
1483     avio_dir_cmd_example
1484     avio_reading_example
1485     decode_audio_example
1486     decode_video_example
1487     demuxing_decoding_example
1488     encode_audio_example
1489     encode_video_example
1490     extract_mvs_example
1491     filter_audio_example
1492     filtering_audio_example
1493     filtering_video_example
1494     http_multiclient_example
1495     hw_decode_example
1496     metadata_example
1497     muxing_example
1498     qsvdec_example
1499     remuxing_example
1500     resampling_audio_example
1501     scaling_video_example
1502     transcode_aac_example
1503     transcoding_example
1504 "
1505
1506 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1507     alsa
1508     appkit
1509     avfoundation
1510     bzlib
1511     coreimage
1512     iconv
1513     jack
1514     libxcb
1515     libxcb_shm
1516     libxcb_shape
1517     libxcb_xfixes
1518     lzma
1519     schannel
1520     sdl2
1521     securetransport
1522     sndio
1523     xlib
1524     zlib
1525 "
1526
1527 EXTERNAL_LIBRARY_GPL_LIST="
1528     avisynth
1529     frei0r
1530     libcdio
1531     librubberband
1532     libvidstab
1533     libx264
1534     libx265
1535     libxavs
1536     libxvid
1537 "
1538
1539 EXTERNAL_LIBRARY_NONFREE_LIST="
1540     decklink
1541     libndi_newtek
1542     libfdk_aac
1543     openssl
1544 "
1545
1546 EXTERNAL_LIBRARY_VERSION3_LIST="
1547     gmp
1548     libopencore_amrnb
1549     libopencore_amrwb
1550     libvo_amrwbenc
1551 "
1552
1553 EXTERNAL_LIBRARY_GPLV3_LIST="
1554     libsmbclient
1555 "
1556
1557 EXTERNAL_LIBRARY_LIST="
1558     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1559     $EXTERNAL_LIBRARY_GPL_LIST
1560     $EXTERNAL_LIBRARY_NONFREE_LIST
1561     $EXTERNAL_LIBRARY_VERSION3_LIST
1562     $EXTERNAL_LIBRARY_GPLV3_LIST
1563     chromaprint
1564     gcrypt
1565     gnutls
1566     jni
1567     ladspa
1568     libass
1569     libbluray
1570     libbs2b
1571     libcaca
1572     libcelt
1573     libdc1394
1574     libdrm
1575     libflite
1576     libfontconfig
1577     libfreetype
1578     libfribidi
1579     libgme
1580     libgsm
1581     libiec61883
1582     libilbc
1583     libkvazaar
1584     libmodplug
1585     libmp3lame
1586     libmysofa
1587     libopencv
1588     libopenh264
1589     libopenjpeg
1590     libopenmpt
1591     libopus
1592     libpulse
1593     librsvg
1594     librtmp
1595     libshine
1596     libsmbclient
1597     libsnappy
1598     libsoxr
1599     libspeex
1600     libssh
1601     libtesseract
1602     libtheora
1603     libtwolame
1604     libv4l2
1605     libvmaf
1606     libvorbis
1607     libvpx
1608     libwavpack
1609     libwebp
1610     libxml2
1611     libzimg
1612     libzmq
1613     libzvbi
1614     mediacodec
1615     openal
1616     opencl
1617     opengl
1618 "
1619
1620 HWACCEL_AUTODETECT_LIBRARY_LIST="
1621     audiotoolbox
1622     crystalhd
1623     cuda
1624     cuvid
1625     d3d11va
1626     dxva2
1627     nvenc
1628     vaapi
1629     vda
1630     vdpau
1631     videotoolbox
1632     v4l2_m2m
1633     xvmc
1634 "
1635
1636 HWACCEL_LIBRARY_NONFREE_LIST="
1637     cuda_sdk
1638     libnpp
1639 "
1640
1641 HWACCEL_LIBRARY_LIST="
1642     $HWACCEL_AUTODETECT_LIBRARY_LIST
1643     $HWACCEL_LIBRARY_NONFREE_LIST
1644     libmfx
1645     mmal
1646     omx
1647 "
1648
1649 DOCUMENT_LIST="
1650     doc
1651     htmlpages
1652     manpages
1653     podpages
1654     txtpages
1655 "
1656
1657 FEATURE_LIST="
1658     ftrapv
1659     gray
1660     hardcoded_tables
1661     omx_rpi
1662     runtime_cpudetect
1663     safe_bitstream_reader
1664     shared
1665     small
1666     static
1667     swscale_alpha
1668 "
1669
1670 LIBRARY_LIST="
1671     avcodec
1672     avdevice
1673     avfilter
1674     avformat
1675     avresample
1676     avutil
1677     postproc
1678     swresample
1679     swscale
1680 "
1681
1682 LICENSE_LIST="
1683     gpl
1684     nonfree
1685     version3
1686 "
1687
1688 PROGRAM_LIST="
1689     ffplay
1690     ffprobe
1691     ffserver
1692     ffmpeg
1693 "
1694
1695 SUBSYSTEM_LIST="
1696     dct
1697     dwt
1698     error_resilience
1699     faan
1700     fast_unaligned
1701     fft
1702     lsp
1703     lzo
1704     mdct
1705     pixelutils
1706     network
1707     rdft
1708 "
1709
1710 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1711 CONFIG_LIST="
1712     $DOCUMENT_LIST
1713     $EXAMPLE_LIST
1714     $EXTERNAL_LIBRARY_LIST
1715     $HWACCEL_LIBRARY_LIST
1716     $FEATURE_LIST
1717     $LICENSE_LIST
1718     $LIBRARY_LIST
1719     $PROGRAM_LIST
1720     $SUBSYSTEM_LIST
1721     autodetect
1722     fontconfig
1723     linux_perf
1724     memory_poisoning
1725     neon_clobber_test
1726     ossfuzz
1727     pic
1728     thumb
1729     valgrind_backtrace
1730     xmm_clobber_test
1731     $COMPONENT_LIST
1732 "
1733
1734 THREADS_LIST="
1735     pthreads
1736     os2threads
1737     w32threads
1738 "
1739
1740 ATOMICS_LIST="
1741     atomics_gcc
1742     atomics_suncc
1743     atomics_win32
1744 "
1745
1746 AUTODETECT_LIBS="
1747     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1748     $HWACCEL_AUTODETECT_LIBRARY_LIST
1749     $THREADS_LIST
1750 "
1751
1752 ARCH_LIST="
1753     aarch64
1754     alpha
1755     arm
1756     avr32
1757     avr32_ap
1758     avr32_uc
1759     bfin
1760     ia64
1761     m68k
1762     mips
1763     mips64
1764     parisc
1765     ppc
1766     ppc64
1767     s390
1768     sh4
1769     sparc
1770     sparc64
1771     tilegx
1772     tilepro
1773     tomi
1774     x86
1775     x86_32
1776     x86_64
1777 "
1778
1779 ARCH_EXT_LIST_ARM="
1780     armv5te
1781     armv6
1782     armv6t2
1783     armv8
1784     neon
1785     vfp
1786     vfpv3
1787     setend
1788 "
1789
1790 ARCH_EXT_LIST_MIPS="
1791     mipsfpu
1792     mips32r2
1793     mips32r5
1794     mips64r2
1795     mips32r6
1796     mips64r6
1797     mipsdsp
1798     mipsdspr2
1799     msa
1800 "
1801
1802 ARCH_EXT_LIST_LOONGSON="
1803     loongson2
1804     loongson3
1805     mmi
1806 "
1807
1808 ARCH_EXT_LIST_X86_SIMD="
1809     aesni
1810     amd3dnow
1811     amd3dnowext
1812     avx
1813     avx2
1814     fma3
1815     fma4
1816     mmx
1817     mmxext
1818     sse
1819     sse2
1820     sse3
1821     sse4
1822     sse42
1823     ssse3
1824     xop
1825 "
1826
1827 ARCH_EXT_LIST_PPC="
1828     altivec
1829     dcbzl
1830     ldbrx
1831     power8
1832     ppc4xx
1833     vsx
1834 "
1835
1836 ARCH_EXT_LIST_X86="
1837     $ARCH_EXT_LIST_X86_SIMD
1838     cpunop
1839     i686
1840 "
1841
1842 ARCH_EXT_LIST="
1843     $ARCH_EXT_LIST_ARM
1844     $ARCH_EXT_LIST_PPC
1845     $ARCH_EXT_LIST_X86
1846     $ARCH_EXT_LIST_MIPS
1847     $ARCH_EXT_LIST_LOONGSON
1848 "
1849
1850 ARCH_FEATURES="
1851     aligned_stack
1852     fast_64bit
1853     fast_clz
1854     fast_cmov
1855     local_aligned_8
1856     local_aligned_16
1857     local_aligned_32
1858     simd_align_16
1859     simd_align_32
1860 "
1861
1862 BUILTIN_LIST="
1863     atomic_cas_ptr
1864     machine_rw_barrier
1865     MemoryBarrier
1866     mm_empty
1867     rdtsc
1868     sarestart
1869     sem_timedwait
1870     sync_val_compare_and_swap
1871 "
1872 HAVE_LIST_CMDLINE="
1873     inline_asm
1874     symver
1875     x86asm
1876 "
1877
1878 HAVE_LIST_PUB="
1879     bigendian
1880     fast_unaligned
1881 "
1882
1883 HEADERS_LIST="
1884     altivec_h
1885     arpa_inet_h
1886     asm_types_h
1887     cdio_paranoia_h
1888     cdio_paranoia_paranoia_h
1889     cuda_h
1890     d3d11_h
1891     dispatch_dispatch_h
1892     dev_bktr_ioctl_bt848_h
1893     dev_bktr_ioctl_meteor_h
1894     dev_ic_bt8xx_h
1895     dev_video_bktr_ioctl_bt848_h
1896     dev_video_meteor_ioctl_meteor_h
1897     direct_h
1898     dirent_h
1899     dlfcn_h
1900     dxgidebug_h
1901     dxva_h
1902     ES2_gl_h
1903     gsm_h
1904     io_h
1905     mach_mach_time_h
1906     machine_ioctl_bt848_h
1907     machine_ioctl_meteor_h
1908     malloc_h
1909     opencv2_core_core_c_h
1910     openjpeg_2_2_openjpeg_h
1911     openjpeg_2_1_openjpeg_h
1912     openjpeg_2_0_openjpeg_h
1913     openjpeg_1_5_openjpeg_h
1914     OpenGL_gl3_h
1915     poll_h
1916     soundcard_h
1917     stdatomic_h
1918     sys_mman_h
1919     sys_param_h
1920     sys_resource_h
1921     sys_select_h
1922     sys_soundcard_h
1923     sys_time_h
1924     sys_un_h
1925     sys_videoio_h
1926     termios_h
1927     udplite_h
1928     unistd_h
1929     valgrind_valgrind_h
1930     windows_h
1931     winsock2_h
1932 "
1933
1934 INTRINSICS_LIST="
1935     intrinsics_neon
1936 "
1937
1938 COMPLEX_FUNCS="
1939     cabs
1940     cexp
1941 "
1942
1943 MATH_FUNCS="
1944     atanf
1945     atan2f
1946     cbrt
1947     cbrtf
1948     copysign
1949     cosf
1950     erf
1951     exp2
1952     exp2f
1953     expf
1954     hypot
1955     isfinite
1956     isinf
1957     isnan
1958     ldexpf
1959     llrint
1960     llrintf
1961     log2
1962     log2f
1963     log10f
1964     lrint
1965     lrintf
1966     powf
1967     rint
1968     round
1969     roundf
1970     sinf
1971     trunc
1972     truncf
1973 "
1974
1975 SYSTEM_FUNCS="
1976     access
1977     aligned_malloc
1978     arc4random
1979     clock_gettime
1980     closesocket
1981     CommandLineToArgvW
1982     CoTaskMemFree
1983     CryptGenRandom
1984     dlopen
1985     fcntl
1986     flt_lim
1987     fork
1988     getaddrinfo
1989     gethrtime
1990     getopt
1991     GetProcessAffinityMask
1992     GetProcessMemoryInfo
1993     GetProcessTimes
1994     getrusage
1995     GetSystemTimeAsFileTime
1996     gettimeofday
1997     glob
1998     glXGetProcAddress
1999     gmtime_r
2000     inet_aton
2001     isatty
2002     jack_port_get_latency_range
2003     kbhit
2004     LoadLibrary
2005     localtime_r
2006     lstat
2007     lzo1x_999_compress
2008     mach_absolute_time
2009     MapViewOfFile
2010     memalign
2011     mkstemp
2012     mmap
2013     mprotect
2014     nanosleep
2015     PeekNamedPipe
2016     posix_memalign
2017     pthread_cancel
2018     sched_getaffinity
2019     SetConsoleTextAttribute
2020     SetConsoleCtrlHandler
2021     setmode
2022     setrlimit
2023     Sleep
2024     strerror_r
2025     sysconf
2026     sysctl
2027     usleep
2028     UTGetOSTypeFromString
2029     VirtualAlloc
2030     wglGetProcAddress
2031 "
2032
2033 TOOLCHAIN_FEATURES="
2034     as_dn_directive
2035     as_fpu_directive
2036     as_func
2037     as_object_arch
2038     asm_mod_q
2039     attribute_may_alias
2040     attribute_packed
2041     blocks_extension
2042     ebp_available
2043     ebx_available
2044     gnu_as
2045     gnu_windres
2046     ibm_asm
2047     inline_asm_direct_symbol_refs
2048     inline_asm_labels
2049     inline_asm_nonlocal_labels
2050     pragma_deprecated
2051     rsync_contimeout
2052     symver_asm_label
2053     symver_gnu_asm
2054     vfp_args
2055     xform_asm
2056     xmm_clobbers
2057 "
2058
2059 TYPES_LIST="
2060     CONDITION_VARIABLE_Ptr
2061     socklen_t
2062     struct_addrinfo
2063     struct_group_source_req
2064     struct_ip_mreq_source
2065     struct_ipv6_mreq
2066     struct_msghdr_msg_flags
2067     struct_pollfd
2068     struct_rusage_ru_maxrss
2069     struct_sctp_event_subscribe
2070     struct_sockaddr_in6
2071     struct_sockaddr_sa_len
2072     struct_sockaddr_storage
2073     struct_stat_st_mtim_tv_nsec
2074     struct_v4l2_frmivalenum_discrete
2075 "
2076
2077 HAVE_LIST="
2078     $ARCH_EXT_LIST
2079     $(add_suffix _external $ARCH_EXT_LIST)
2080     $(add_suffix _inline   $ARCH_EXT_LIST)
2081     $ARCH_FEATURES
2082     $ATOMICS_LIST
2083     $BUILTIN_LIST
2084     $COMPLEX_FUNCS
2085     $HAVE_LIST_CMDLINE
2086     $HAVE_LIST_PUB
2087     $HEADERS_LIST
2088     $INTRINSICS_LIST
2089     $MATH_FUNCS
2090     $SYSTEM_FUNCS
2091     $THREADS_LIST
2092     $TOOLCHAIN_FEATURES
2093     $TYPES_LIST
2094     atomics_native
2095     dos_paths
2096     libc_msvcrt
2097     makeinfo
2098     makeinfo_html
2099     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2100     perl
2101     pod2man
2102     section_data_rel_ro
2103     texi2html
2104     threads
2105     uwp
2106     vaapi_drm
2107     vaapi_x11
2108     vdpau_x11
2109     winrt
2110 "
2111
2112 # options emitted with CONFIG_ prefix but not available on the command line
2113 CONFIG_EXTRA="
2114     aandcttables
2115     ac3dsp
2116     audio_frame_queue
2117     audiodsp
2118     blockdsp
2119     bswapdsp
2120     cabac
2121     dirac_parse
2122     dvprofile
2123     exif
2124     faandct
2125     faanidct
2126     fdctdsp
2127     flacdsp
2128     fmtconvert
2129     frame_thread_encoder
2130     g722dsp
2131     golomb
2132     gplv3
2133     h263dsp
2134     h264chroma
2135     h264dsp
2136     h264parse
2137     h264pred
2138     h264qpel
2139     hevcparse
2140     hpeldsp
2141     huffman
2142     huffyuvdsp
2143     huffyuvencdsp
2144     idctdsp
2145     iirfilter
2146     mdct15
2147     intrax8
2148     iso_media
2149     ividsp
2150     jpegtables
2151     lgplv3
2152     libx262
2153     llauddsp
2154     llviddsp
2155     llvidencdsp
2156     lpc
2157     lzf
2158     me_cmp
2159     mpeg_er
2160     mpegaudio
2161     mpegaudiodsp
2162     mpegaudioheader
2163     mpegvideo
2164     mpegvideoenc
2165     mss34dsp
2166     pixblockdsp
2167     qpeldsp
2168     qsv
2169     qsvdec
2170     qsvenc
2171     rangecoder
2172     riffdec
2173     riffenc
2174     rtpdec
2175     rtpenc_chain
2176     rv34dsp
2177     sinewin
2178     snappy
2179     srtp
2180     startcode
2181     texturedsp
2182     texturedspenc
2183     tpeldsp
2184     vaapi_encode
2185     vc1dsp
2186     videodsp
2187     vp3dsp
2188     vp56dsp
2189     vp8dsp
2190     wma_freqs
2191     wmv2dsp
2192 "
2193
2194 CMDLINE_SELECT="
2195     $ARCH_EXT_LIST
2196     $CONFIG_LIST
2197     $HAVE_LIST_CMDLINE
2198     $THREADS_LIST
2199     asm
2200     cross_compile
2201     debug
2202     extra_warnings
2203     logging
2204     lto
2205     optimizations
2206     rpath
2207     stripping
2208 "
2209
2210 PATHS_LIST="
2211     bindir
2212     datadir
2213     docdir
2214     incdir
2215     libdir
2216     mandir
2217     pkgconfigdir
2218     prefix
2219     shlibdir
2220     install_name_dir
2221 "
2222
2223 CMDLINE_SET="
2224     $PATHS_LIST
2225     ar
2226     arch
2227     as
2228     assert_level
2229     build_suffix
2230     cc
2231     objcc
2232     cpu
2233     cross_prefix
2234     custom_allocator
2235     cxx
2236     dep_cc
2237     doxygen
2238     env
2239     extra_version
2240     gas
2241     host_cc
2242     host_cflags
2243     host_extralibs
2244     host_ld
2245     host_ldflags
2246     host_os
2247     ignore_tests
2248     install
2249     ld
2250     ln_s
2251     logfile
2252     malloc_prefix
2253     nm
2254     optflags
2255     nvccflags
2256     pkg_config
2257     pkg_config_flags
2258     progs_suffix
2259     random_seed
2260     ranlib
2261     samples
2262     strip
2263     sws_max_filter_size
2264     sysinclude
2265     sysroot
2266     target_exec
2267     target_os
2268     target_path
2269     target_samples
2270     tempprefix
2271     toolchain
2272     valgrind
2273     x86asmexe
2274 "
2275
2276 CMDLINE_APPEND="
2277     extra_cflags
2278     extra_cxxflags
2279     extra_objcflags
2280     host_cppflags
2281 "
2282
2283 # code dependency declarations
2284
2285 # architecture extensions
2286
2287 armv5te_deps="arm"
2288 armv6_deps="arm"
2289 armv6t2_deps="arm"
2290 armv8_deps="aarch64"
2291 neon_deps_any="aarch64 arm"
2292 intrinsics_neon_deps="neon"
2293 vfp_deps_any="aarch64 arm"
2294 vfpv3_deps="vfp"
2295 setend_deps="arm"
2296
2297 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2298
2299 loongson2_deps="mips"
2300 loongson3_deps="mips"
2301 mipsfpu_deps="mips"
2302 mipsdsp_deps="mips"
2303 mipsdspr2_deps="mips"
2304 mips32r2_deps="mips"
2305 mips32r5_deps="mips"
2306 mips32r6_deps="mips"
2307 mips64r2_deps="mips"
2308 mips64r6_deps="mips"
2309 msa_deps="mipsfpu"
2310 mmi_deps="mips"
2311
2312 altivec_deps="ppc"
2313 dcbzl_deps="ppc"
2314 ldbrx_deps="ppc"
2315 ppc4xx_deps="ppc"
2316 vsx_deps="altivec"
2317 power8_deps="vsx"
2318
2319 cpunop_deps="i686"
2320 x86_64_select="i686"
2321 x86_64_suggest="fast_cmov"
2322
2323 amd3dnow_deps="mmx"
2324 amd3dnowext_deps="amd3dnow"
2325 i686_deps="x86"
2326 mmx_deps="x86"
2327 mmxext_deps="mmx"
2328 sse_deps="mmxext"
2329 sse2_deps="sse"
2330 sse3_deps="sse2"
2331 ssse3_deps="sse3"
2332 sse4_deps="ssse3"
2333 sse42_deps="sse4"
2334 aesni_deps="sse42"
2335 avx_deps="sse42"
2336 xop_deps="avx"
2337 fma3_deps="avx"
2338 fma4_deps="avx"
2339 avx2_deps="avx"
2340
2341 mmx_external_deps="x86asm"
2342 mmx_inline_deps="inline_asm"
2343 mmx_suggest="mmx_external mmx_inline"
2344
2345 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2346     eval dep=\$${ext}_deps
2347     eval ${ext}_external_deps='"${dep}_external"'
2348     eval ${ext}_inline_deps='"${dep}_inline"'
2349     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2350 done
2351
2352 aligned_stack_if_any="aarch64 ppc x86"
2353 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2354 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2355 fast_unaligned_if_any="aarch64 ppc x86"
2356 simd_align_16_if_any="altivec neon sse"
2357 simd_align_32_if_any="avx"
2358
2359 # system capabilities
2360 symver_if_any="symver_asm_label symver_gnu_asm"
2361 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2362
2363 # threading support
2364 atomics_gcc_if="sync_val_compare_and_swap"
2365 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2366 atomics_win32_if="MemoryBarrier"
2367 atomics_native_if_any="$ATOMICS_LIST"
2368 w32threads_deps="atomics_native"
2369 threads_if_any="$THREADS_LIST"
2370
2371 # subsystems
2372 dct_select="rdft"
2373 dirac_parse_select="golomb"
2374 error_resilience_select="me_cmp"
2375 faandct_deps="faan fdctdsp"
2376 faanidct_deps="faan idctdsp"
2377 h264dsp_select="startcode"
2378 hevcparse_select="golomb"
2379 frame_thread_encoder_deps="encoders threads"
2380 intrax8_select="blockdsp idctdsp"
2381 mdct_select="fft"
2382 mdct15_select="fft"
2383 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2384 mpeg_er_select="error_resilience"
2385 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2386 mpegaudiodsp_select="dct"
2387 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2388 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2389 vc1dsp_select="h264chroma qpeldsp startcode"
2390 rdft_select="fft"
2391
2392 # decoders / encoders
2393 aac_decoder_select="mdct15 mdct sinewin"
2394 aac_fixed_decoder_select="mdct sinewin"
2395 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2396 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2397 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2398 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2399 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2400 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2401 adpcm_g722_decoder_select="g722dsp"
2402 adpcm_g722_encoder_select="g722dsp"
2403 aic_decoder_select="golomb idctdsp"
2404 alac_encoder_select="lpc"
2405 als_decoder_select="bswapdsp"
2406 amrnb_decoder_select="lsp"
2407 amrwb_decoder_select="lsp"
2408 amv_decoder_select="sp5x_decoder exif"
2409 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2410 ape_decoder_select="bswapdsp llauddsp"
2411 apng_decoder_select="zlib"
2412 apng_encoder_select="llvidencdsp zlib"
2413 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2414 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2415 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2416 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2417 atrac1_decoder_select="mdct sinewin"
2418 atrac3_decoder_select="mdct"
2419 atrac3p_decoder_select="mdct sinewin"
2420 avrn_decoder_select="exif jpegtables"
2421 bink_decoder_select="blockdsp hpeldsp"
2422 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2423 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2424 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2425 clearvideo_decoder_select="idctdsp"
2426 cllc_decoder_select="bswapdsp"
2427 comfortnoise_encoder_select="lpc"
2428 cook_decoder_select="audiodsp mdct sinewin"
2429 cscd_decoder_select="lzo"
2430 cscd_decoder_suggest="zlib"
2431 dca_decoder_select="mdct"
2432 dds_decoder_select="texturedsp"
2433 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2434 dnxhd_decoder_select="blockdsp idctdsp"
2435 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2436 dolby_e_decoder_select="mdct"
2437 dvvideo_decoder_select="dvprofile idctdsp"
2438 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2439 dxa_decoder_select="zlib"
2440 dxv_decoder_select="lzf texturedsp"
2441 eac3_decoder_select="ac3_decoder"
2442 eac3_encoder_select="ac3_encoder"
2443 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2444 eatgq_decoder_select="aandcttables"
2445 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2446 exr_decoder_select="zlib"
2447 ffv1_decoder_select="rangecoder"
2448 ffv1_encoder_select="rangecoder"
2449 ffvhuff_decoder_select="huffyuv_decoder"
2450 ffvhuff_encoder_select="huffyuv_encoder"
2451 fic_decoder_select="golomb"
2452 flac_decoder_select="flacdsp"
2453 flac_encoder_select="bswapdsp flacdsp lpc"
2454 flashsv2_decoder_select="zlib"
2455 flashsv2_encoder_select="zlib"
2456 flashsv_decoder_select="zlib"
2457 flashsv_encoder_select="zlib"
2458 flv_decoder_select="h263_decoder"
2459 flv_encoder_select="h263_encoder"
2460 fourxm_decoder_select="blockdsp bswapdsp"
2461 fraps_decoder_select="bswapdsp huffman"
2462 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2463 g729_decoder_select="audiodsp"
2464 h261_decoder_select="mpegvideo"
2465 h261_encoder_select="aandcttables mpegvideoenc"
2466 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2467 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2468 h263i_decoder_select="h263_decoder"
2469 h263p_decoder_select="h263_decoder"
2470 h263p_encoder_select="h263_encoder"
2471 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2472 h264_decoder_suggest="error_resilience"
2473 hap_decoder_select="snappy texturedsp"
2474 hap_encoder_deps="libsnappy"
2475 hap_encoder_select="texturedspenc"
2476 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2477 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2478 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2479 iac_decoder_select="imc_decoder"
2480 imc_decoder_select="bswapdsp fft mdct sinewin"
2481 indeo3_decoder_select="hpeldsp"
2482 indeo4_decoder_select="ividsp"
2483 indeo5_decoder_select="ividsp"
2484 interplay_video_decoder_select="hpeldsp"
2485 jpegls_decoder_select="mjpeg_decoder"
2486 jv_decoder_select="blockdsp"
2487 lagarith_decoder_select="llviddsp"
2488 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2489 magicyuv_decoder_select="llviddsp"
2490 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2491 metasound_decoder_select="lsp mdct sinewin"
2492 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2493 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2494 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2495 mjpegb_decoder_select="mjpeg_decoder"
2496 mlp_decoder_select="mlp_parser"
2497 mlp_encoder_select="lpc"
2498 motionpixels_decoder_select="bswapdsp"
2499 mp1_decoder_select="mpegaudio"
2500 mp1float_decoder_select="mpegaudio"
2501 mp2_decoder_select="mpegaudio"
2502 mp2float_decoder_select="mpegaudio"
2503 mp3_decoder_select="mpegaudio"
2504 mp3adu_decoder_select="mpegaudio"
2505 mp3adufloat_decoder_select="mpegaudio"
2506 mp3float_decoder_select="mpegaudio"
2507 mp3on4_decoder_select="mpegaudio"
2508 mp3on4float_decoder_select="mpegaudio"
2509 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2510 mpc8_decoder_select="mpegaudiodsp"
2511 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2512 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2513 mpegvideo_decoder_select="mpegvideo"
2514 mpeg1video_decoder_select="mpegvideo"
2515 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2516 mpeg2video_decoder_select="mpegvideo"
2517 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2518 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2519 mpeg4_encoder_select="h263_encoder"
2520 msa1_decoder_select="mss34dsp"
2521 mscc_decoder_select="zlib"
2522 msmpeg4v1_decoder_select="h263_decoder"
2523 msmpeg4v2_decoder_select="h263_decoder"
2524 msmpeg4v2_encoder_select="h263_encoder"
2525 msmpeg4v3_decoder_select="h263_decoder"
2526 msmpeg4v3_encoder_select="h263_encoder"
2527 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2528 mts2_decoder_select="mss34dsp"
2529 mxpeg_decoder_select="mjpeg_decoder"
2530 nellymoser_decoder_select="mdct sinewin"
2531 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2532 nuv_decoder_select="idctdsp lzo"
2533 on2avc_decoder_select="mdct"
2534 opus_decoder_deps="swresample"
2535 opus_decoder_select="mdct15"
2536 opus_encoder_select="audio_frame_queue mdct15"
2537 png_decoder_select="zlib"
2538 png_encoder_select="llvidencdsp zlib"
2539 prores_decoder_select="blockdsp idctdsp"
2540 prores_encoder_select="fdctdsp"
2541 qcelp_decoder_select="lsp"
2542 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2543 ra_144_decoder_select="audiodsp"
2544 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2545 ralf_decoder_select="golomb"
2546 rawvideo_decoder_select="bswapdsp"
2547 rscc_decoder_select="zlib"
2548 rtjpeg_decoder_select="me_cmp"
2549 rv10_decoder_select="h263_decoder"
2550 rv10_encoder_select="h263_encoder"
2551 rv20_decoder_select="h263_decoder"
2552 rv20_encoder_select="h263_encoder"
2553 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2554 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2555 screenpresso_decoder_select="zlib"
2556 shorten_decoder_select="bswapdsp"
2557 sipr_decoder_select="lsp"
2558 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2559 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2560 sonic_decoder_select="golomb rangecoder"
2561 sonic_encoder_select="golomb rangecoder"
2562 sonic_ls_encoder_select="golomb rangecoder"
2563 sp5x_decoder_select="mjpeg_decoder"
2564 srgc_decoder_select="zlib"
2565 svq1_decoder_select="hpeldsp"
2566 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2567 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2568 svq3_decoder_suggest="zlib"
2569 tak_decoder_select="audiodsp"
2570 tdsc_decoder_select="zlib mjpeg_decoder"
2571 theora_decoder_select="vp3_decoder"
2572 thp_decoder_select="mjpeg_decoder"
2573 tiff_decoder_suggest="zlib lzma"
2574 tiff_encoder_suggest="zlib"
2575 truehd_decoder_select="mlp_parser"
2576 truehd_encoder_select="lpc"
2577 truemotion2_decoder_select="bswapdsp"
2578 truespeech_decoder_select="bswapdsp"
2579 tscc_decoder_select="zlib"
2580 twinvq_decoder_select="mdct lsp sinewin"
2581 txd_decoder_select="texturedsp"
2582 utvideo_decoder_select="bswapdsp llviddsp"
2583 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2584 vble_decoder_select="llviddsp"
2585 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2586 vc1_qsv_decoder_deps="libmfx"
2587 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2588 vc1image_decoder_select="vc1_decoder"
2589 vorbis_decoder_select="mdct"
2590 vorbis_encoder_select="mdct"
2591 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2592 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2593 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2594 vp6a_decoder_select="vp6_decoder"
2595 vp6f_decoder_select="vp6_decoder"
2596 vp7_decoder_select="h264pred videodsp vp8dsp"
2597 vp8_decoder_select="h264pred videodsp vp8dsp"
2598 vp9_decoder_select="videodsp vp9_parser"
2599 webp_decoder_select="vp8_decoder exif"
2600 wmalossless_decoder_select="llauddsp"
2601 wmapro_decoder_select="mdct sinewin wma_freqs"
2602 wmav1_decoder_select="mdct sinewin wma_freqs"
2603 wmav1_encoder_select="mdct sinewin wma_freqs"
2604 wmav2_decoder_select="mdct sinewin wma_freqs"
2605 wmav2_encoder_select="mdct sinewin wma_freqs"
2606 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2607 wmv1_decoder_select="h263_decoder"
2608 wmv1_encoder_select="h263_encoder"
2609 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2610 wmv2_encoder_select="h263_encoder wmv2dsp"
2611 wmv3_decoder_select="vc1_decoder"
2612 wmv3image_decoder_select="wmv3_decoder"
2613 xma1_decoder_select="wmapro_decoder"
2614 xma2_decoder_select="wmapro_decoder"
2615 zerocodec_decoder_select="zlib"
2616 zlib_decoder_select="zlib"
2617 zlib_encoder_select="zlib"
2618 zmbv_decoder_select="zlib"
2619 zmbv_encoder_select="zlib"
2620
2621 # hardware accelerators
2622 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2623 cuda_deps_any="dlopen LoadLibrary"
2624 cuvid_deps="cuda"
2625 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2626 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32"
2627 dxva2_extralibs="-luser32"
2628 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension"
2629 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2630 vda_deps="vda_framework pthreads"
2631 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2632 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2633 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2634 xvmc_deps="X11_extensions_XvMClib_h"
2635
2636 h263_vaapi_hwaccel_deps="vaapi"
2637 h263_vaapi_hwaccel_select="h263_decoder"
2638 h263_videotoolbox_hwaccel_deps="videotoolbox"
2639 h263_videotoolbox_hwaccel_select="h263_decoder"
2640 h264_cuvid_hwaccel_deps="cuda cuvid"
2641 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2642 h264_d3d11va_hwaccel_deps="d3d11va"
2643 h264_d3d11va_hwaccel_select="h264_decoder"
2644 h264_d3d11va2_hwaccel_deps="d3d11va"
2645 h264_d3d11va2_hwaccel_select="h264_decoder"
2646 h264_dxva2_hwaccel_deps="dxva2"
2647 h264_dxva2_hwaccel_select="h264_decoder"
2648 h264_mediacodec_hwaccel_deps="mediacodec"
2649 h264_mmal_hwaccel_deps="mmal"
2650 h264_qsv_hwaccel_deps="libmfx"
2651 h264_vaapi_hwaccel_deps="vaapi"
2652 h264_vaapi_hwaccel_select="h264_decoder"
2653 h264_vda_hwaccel_deps="vda"
2654 h264_vda_hwaccel_select="h264_decoder"
2655 h264_vda_old_hwaccel_deps="vda"
2656 h264_vda_old_hwaccel_select="h264_decoder"
2657 h264_vdpau_hwaccel_deps="vdpau"
2658 h264_vdpau_hwaccel_select="h264_decoder"
2659 h264_videotoolbox_hwaccel_deps="videotoolbox"
2660 h264_videotoolbox_hwaccel_select="h264_decoder"
2661 hevc_cuvid_hwaccel_deps="cuda cuvid"
2662 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2663 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2664 hevc_d3d11va_hwaccel_select="hevc_decoder"
2665 hevc_mediacodec_hwaccel_deps="mediacodec"
2666 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2667 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2668 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2669 hevc_dxva2_hwaccel_select="hevc_decoder"
2670 hevc_qsv_hwaccel_deps="libmfx"
2671 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2672 hevc_vaapi_hwaccel_select="hevc_decoder"
2673 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2674 hevc_vdpau_hwaccel_select="hevc_decoder"
2675 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2676 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2677 mpeg_xvmc_hwaccel_deps="xvmc"
2678 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2679 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2680 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2681 mpeg1_vdpau_hwaccel_deps="vdpau"
2682 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2683 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2684 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2685 mpeg1_xvmc_hwaccel_deps="xvmc"
2686 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2687 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2688 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2689 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2690 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2691 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2692 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2693 mpeg2_dxva2_hwaccel_deps="dxva2"
2694 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2695 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2696 mpeg2_mmal_hwaccel_deps="mmal"
2697 mpeg2_qsv_hwaccel_deps="libmfx"
2698 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2699 mpeg2_vaapi_hwaccel_deps="vaapi"
2700 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2701 mpeg2_vdpau_hwaccel_deps="vdpau"
2702 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2703 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2704 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2705 mpeg2_xvmc_hwaccel_deps="xvmc"
2706 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2707 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2708 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2709 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2710 mpeg4_mmal_hwaccel_deps="mmal"
2711 mpeg4_vaapi_hwaccel_deps="vaapi"
2712 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2713 mpeg4_vdpau_hwaccel_deps="vdpau"
2714 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2715 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2716 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2717 vc1_cuvid_hwaccel_deps="cuda cuvid"
2718 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2719 vc1_d3d11va_hwaccel_deps="d3d11va"
2720 vc1_d3d11va_hwaccel_select="vc1_decoder"
2721 vc1_d3d11va2_hwaccel_deps="d3d11va"
2722 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2723 vc1_dxva2_hwaccel_deps="dxva2"
2724 vc1_dxva2_hwaccel_select="vc1_decoder"
2725 vc1_mmal_hwaccel_deps="mmal"
2726 vc1_qsv_hwaccel_deps="libmfx"
2727 vc1_qsv_hwaccel_select="qsvdec_vc1"
2728 vc1_vaapi_hwaccel_deps="vaapi"
2729 vc1_vaapi_hwaccel_select="vc1_decoder"
2730 vc1_vdpau_hwaccel_deps="vdpau"
2731 vc1_vdpau_hwaccel_select="vc1_decoder"
2732 vp8_cuvid_hwaccel_deps="cuda cuvid"
2733 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2734 vp9_cuvid_hwaccel_deps="cuda cuvid"
2735 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2736 vp8_mediacodec_hwaccel_deps="mediacodec"
2737 vp8_qsv_hwaccel_deps="libmfx"
2738 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2739 vp9_d3d11va_hwaccel_select="vp9_decoder"
2740 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2741 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2742 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2743 vp9_dxva2_hwaccel_select="vp9_decoder"
2744 vp9_mediacodec_hwaccel_deps="mediacodec"
2745 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2746 vp9_vaapi_hwaccel_select="vp9_decoder"
2747 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2748 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2749 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2750 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2751 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2752
2753 # hardware-accelerated codecs
2754 omx_deps="dlopen pthreads"
2755 omx_extralibs='$ldl'
2756 omx_rpi_select="omx"
2757 qsvdec_select="qsv"
2758 qsvenc_select="qsv"
2759 vaapi_encode_deps="vaapi"
2760 v4l2_m2m_deps_any="linux_videodev2_h"
2761
2762 hwupload_cuda_filter_deps="cuda"
2763 scale_npp_filter_deps="cuda libnpp"
2764 scale_cuda_filter_deps="cuda_sdk"
2765 thumbnail_cuda_filter_deps="cuda_sdk"
2766
2767 nvenc_deps="cuda"
2768 nvenc_deps_any="dlopen LoadLibrary"
2769 nvenc_encoder_deps="nvenc"
2770
2771 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2772 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2773 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2774 h264_cuvid_decoder_deps="cuda cuvid"
2775 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2776 h264_mediacodec_decoder_deps="mediacodec"
2777 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2778 h264_mmal_decoder_deps="mmal"
2779 h264_nvenc_encoder_deps="nvenc"
2780 h264_omx_encoder_deps="omx"
2781 h264_qsv_decoder_deps="libmfx"
2782 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2783 h264_qsv_encoder_deps="libmfx"
2784 h264_qsv_encoder_select="qsvenc"
2785 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2786 h264_vaapi_encoder_select="vaapi_encode golomb"
2787 h264_vda_decoder_deps="vda"
2788 h264_vda_decoder_select="h264_decoder"
2789 h264_vdpau_decoder_deps="vdpau"
2790 h264_vdpau_decoder_select="h264_decoder"
2791 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2792 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2793 hevc_cuvid_decoder_deps="cuda cuvid"
2794 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2795 hevc_mediacodec_decoder_deps="mediacodec"
2796 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2797 hevc_nvenc_encoder_deps="nvenc"
2798 hevc_qsv_decoder_deps="libmfx"
2799 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2800 hevc_qsv_encoder_deps="libmfx"
2801 hevc_qsv_encoder_select="hevcparse qsvenc"
2802 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2803 hevc_vaapi_encoder_select="vaapi_encode golomb"
2804 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2805 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2806 mjpeg_cuvid_decoder_deps="cuda cuvid"
2807 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2808 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2809 mpeg1_cuvid_decoder_deps="cuda cuvid"
2810 mpeg1_vdpau_decoder_deps="vdpau"
2811 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2812 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2813 mpeg2_crystalhd_decoder_select="crystalhd"
2814 mpeg2_cuvid_decoder_deps="cuda cuvid"
2815 mpeg2_mmal_decoder_deps="mmal"
2816 mpeg2_mediacodec_decoder_deps="mediacodec"
2817 mpeg2_qsv_decoder_deps="libmfx"
2818 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2819 mpeg2_qsv_encoder_deps="libmfx"
2820 mpeg2_qsv_encoder_select="qsvenc"
2821 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2822 mpeg2_vaapi_encoder_select="vaapi_encode"
2823 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2824 mpeg4_crystalhd_decoder_select="crystalhd"
2825 mpeg4_cuvid_decoder_deps="cuda cuvid"
2826 mpeg4_mediacodec_decoder_deps="mediacodec"
2827 mpeg4_mmal_decoder_deps="mmal"
2828 mpeg4_omx_encoder_deps="omx"
2829 mpeg4_vdpau_decoder_deps="vdpau"
2830 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2831 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2832 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2833 mpeg_vdpau_decoder_deps="vdpau"
2834 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2835 msmpeg4_crystalhd_decoder_select="crystalhd"
2836 nvenc_h264_encoder_select="h264_nvenc_encoder"
2837 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2838 vc1_crystalhd_decoder_select="crystalhd"
2839 vc1_cuvid_decoder_deps="cuda cuvid"
2840 vc1_mmal_decoder_deps="mmal"
2841 vc1_vdpau_decoder_deps="vdpau"
2842 vc1_vdpau_decoder_select="vc1_decoder"
2843 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2844 vp8_cuvid_decoder_deps="cuda cuvid"
2845 vp8_mediacodec_decoder_deps="mediacodec"
2846 vp8_qsv_decoder_deps="libmfx"
2847 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2848 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2849 vp8_vaapi_encoder_select="vaapi_encode"
2850 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2851 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2852 vp9_cuvid_decoder_deps="cuda cuvid"
2853 vp9_mediacodec_decoder_deps="mediacodec"
2854 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2855 vp9_vaapi_encoder_select="vaapi_encode"
2856 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2857 wmv3_crystalhd_decoder_select="crystalhd"
2858 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2859
2860 # parsers
2861 h264_parser_select="golomb h264dsp h264parse"
2862 hevc_parser_select="hevcparse"
2863 mpegaudio_parser_select="mpegaudioheader"
2864 mpegvideo_parser_select="mpegvideo"
2865 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2866 vc1_parser_select="vc1dsp"
2867
2868 # bitstream_filters
2869 mjpeg2jpeg_bsf_select="jpegtables"
2870
2871 # external libraries
2872 aac_at_decoder_deps="audiotoolbox"
2873 ac3_at_decoder_deps="audiotoolbox"
2874 ac3_at_decoder_select="ac3_parser"
2875 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2876 alac_at_decoder_deps="audiotoolbox"
2877 amr_nb_at_decoder_deps="audiotoolbox"
2878 avisynth_deps_any="dlopen LoadLibrary"
2879 avisynth_demuxer_deps="avisynth"
2880 avisynth_demuxer_select="riffdec"
2881 eac3_at_decoder_deps="audiotoolbox"
2882 eac3_at_decoder_select="ac3_parser"
2883 gsm_ms_at_decoder_deps="audiotoolbox"
2884 ilbc_at_decoder_deps="audiotoolbox"
2885 mp1_at_decoder_deps="audiotoolbox"
2886 mp2_at_decoder_deps="audiotoolbox"
2887 mp3_at_decoder_deps="audiotoolbox"
2888 mp1_at_decoder_select="mpegaudioheader"
2889 mp2_at_decoder_select="mpegaudioheader"
2890 mp3_at_decoder_select="mpegaudioheader"
2891 pcm_alaw_at_decoder_deps="audiotoolbox"
2892 pcm_mulaw_at_decoder_deps="audiotoolbox"
2893 qdmc_at_decoder_deps="audiotoolbox"
2894 qdm2_at_decoder_deps="audiotoolbox"
2895 aac_at_encoder_deps="audiotoolbox"
2896 aac_at_encoder_select="audio_frame_queue"
2897 alac_at_encoder_deps="audiotoolbox"
2898 alac_at_encoder_select="audio_frame_queue"
2899 ilbc_at_encoder_deps="audiotoolbox"
2900 ilbc_at_encoder_select="audio_frame_queue"
2901 pcm_alaw_at_encoder_deps="audiotoolbox"
2902 pcm_alaw_at_encoder_select="audio_frame_queue"
2903 pcm_mulaw_at_encoder_deps="audiotoolbox"
2904 pcm_mulaw_at_encoder_select="audio_frame_queue"
2905 chromaprint_muxer_deps="chromaprint"
2906 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2907 libcelt_decoder_deps="libcelt"
2908 libfdk_aac_decoder_deps="libfdk_aac"
2909 libfdk_aac_encoder_deps="libfdk_aac"
2910 libfdk_aac_encoder_select="audio_frame_queue"
2911 libgme_demuxer_deps="libgme"
2912 libgsm_decoder_deps="libgsm"
2913 libgsm_encoder_deps="libgsm"
2914 libgsm_ms_decoder_deps="libgsm"
2915 libgsm_ms_encoder_deps="libgsm"
2916 libilbc_decoder_deps="libilbc"
2917 libilbc_encoder_deps="libilbc"
2918 libkvazaar_encoder_deps="libkvazaar"
2919 libmodplug_demuxer_deps="libmodplug"
2920 libmp3lame_encoder_deps="libmp3lame"
2921 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2922 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2923 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2924 libopencore_amrnb_encoder_select="audio_frame_queue"
2925 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2926 libopenh264_decoder_deps="libopenh264"
2927 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2928 libopenh264_encoder_deps="libopenh264"
2929 libopenjpeg_decoder_deps="libopenjpeg"
2930 libopenjpeg_encoder_deps="libopenjpeg"
2931 libopenmpt_demuxer_deps="libopenmpt"
2932 libopus_decoder_deps="libopus"
2933 libopus_encoder_deps="libopus"
2934 libopus_encoder_select="audio_frame_queue"
2935 librsvg_decoder_deps="librsvg"
2936 libshine_encoder_deps="libshine"
2937 libshine_encoder_select="audio_frame_queue"
2938 libspeex_decoder_deps="libspeex"
2939 libspeex_encoder_deps="libspeex"
2940 libspeex_encoder_select="audio_frame_queue"
2941 libtheora_encoder_deps="libtheora"
2942 libtwolame_encoder_deps="libtwolame"
2943 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2944 libvorbis_decoder_deps="libvorbis"
2945 libvorbis_encoder_deps="libvorbis"
2946 libvorbis_encoder_select="audio_frame_queue"
2947 libvpx_vp8_decoder_deps="libvpx"
2948 libvpx_vp8_encoder_deps="libvpx"
2949 libvpx_vp9_decoder_deps="libvpx"
2950 libvpx_vp9_encoder_deps="libvpx"
2951 libwavpack_encoder_deps="libwavpack"
2952 libwavpack_encoder_select="audio_frame_queue"
2953 libwebp_encoder_deps="libwebp"
2954 libwebp_anim_encoder_deps="libwebp"
2955 libx262_encoder_deps="libx262"
2956 libx264_encoder_deps="libx264"
2957 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2958 libx264rgb_encoder_select="libx264_encoder"
2959 libx265_encoder_deps="libx265"
2960 libxavs_encoder_deps="libxavs"
2961 libxvid_encoder_deps="libxvid"
2962 libzvbi_teletext_decoder_deps="libzvbi"
2963 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2964 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2965 videotoolbox_encoder_suggest="vda_framework"
2966
2967 # demuxers / muxers
2968 ac3_demuxer_select="ac3_parser"
2969 aiff_muxer_select="iso_media"
2970 asf_demuxer_select="riffdec"
2971 asf_o_demuxer_select="riffdec"
2972 asf_muxer_select="riffenc"
2973 asf_stream_muxer_select="asf_muxer"
2974 avi_demuxer_select="iso_media riffdec exif"
2975 avi_muxer_select="riffenc"
2976 caf_demuxer_select="iso_media riffdec"
2977 caf_muxer_select="iso_media"
2978 dash_muxer_select="mp4_muxer"
2979 dash_demuxer_deps="libxml2"
2980 dirac_demuxer_select="dirac_parser"
2981 dts_demuxer_select="dca_parser"
2982 dtshd_demuxer_select="dca_parser"
2983 dv_demuxer_select="dvprofile"
2984 dv_muxer_select="dvprofile"
2985 dxa_demuxer_select="riffdec"
2986 eac3_demuxer_select="ac3_parser"
2987 f4v_muxer_select="mov_muxer"
2988 fifo_muxer_deps="threads"
2989 flac_demuxer_select="flac_parser"
2990 hds_muxer_select="flv_muxer"
2991 hls_muxer_select="mpegts_muxer"
2992 image2_alias_pix_demuxer_select="image2_demuxer"
2993 image2_brender_pix_demuxer_select="image2_demuxer"
2994 ipod_muxer_select="mov_muxer"
2995 ismv_muxer_select="mov_muxer"
2996 matroska_audio_muxer_select="matroska_muxer"
2997 matroska_demuxer_select="iso_media riffdec"
2998 matroska_demuxer_suggest="bzlib lzo zlib"
2999 matroska_muxer_select="iso_media riffenc"
3000 mmf_muxer_select="riffenc"
3001 mov_demuxer_select="iso_media riffdec"
3002 mov_demuxer_suggest="zlib"
3003 mov_muxer_select="iso_media riffenc rtpenc_chain"
3004 mp3_demuxer_select="mpegaudio_parser"
3005 mp3_muxer_select="mpegaudioheader"
3006 mp4_muxer_select="mov_muxer"
3007 mpegts_demuxer_select="iso_media"
3008 mpegts_muxer_select="adts_muxer latm_muxer"
3009 mpegtsraw_demuxer_select="mpegts_demuxer"
3010 mxf_d10_muxer_select="mxf_muxer"
3011 mxf_opatom_muxer_select="mxf_muxer"
3012 nut_muxer_select="riffenc"
3013 nuv_demuxer_select="riffdec"
3014 oga_muxer_select="ogg_muxer"
3015 ogg_demuxer_select="dirac_parse"
3016 ogv_muxer_select="ogg_muxer"
3017 opus_muxer_select="ogg_muxer"
3018 psp_muxer_select="mov_muxer"
3019 rtp_demuxer_select="sdp_demuxer"
3020 rtp_muxer_select="golomb"
3021 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3022 rtsp_demuxer_select="http_protocol rtpdec"
3023 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3024 sap_demuxer_select="sdp_demuxer"
3025 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3026 sdp_demuxer_select="rtpdec"
3027 smoothstreaming_muxer_select="ismv_muxer"
3028 spdif_muxer_select="aac_parser"
3029 spx_muxer_select="ogg_muxer"
3030 swf_demuxer_suggest="zlib"
3031 tak_demuxer_select="tak_parser"
3032 tg2_muxer_select="mov_muxer"
3033 tgp_muxer_select="mov_muxer"
3034 vobsub_demuxer_select="mpegps_demuxer"
3035 w64_demuxer_select="wav_demuxer"
3036 w64_muxer_select="wav_muxer"
3037 wav_demuxer_select="riffdec"
3038 wav_muxer_select="riffenc"
3039 webm_muxer_select="iso_media riffenc"
3040 webm_dash_manifest_demuxer_select="matroska_demuxer"
3041 wtv_demuxer_select="mpegts_demuxer riffdec"
3042 wtv_muxer_select="mpegts_muxer riffenc"
3043 xmv_demuxer_select="riffdec"
3044 xwma_demuxer_select="riffdec"
3045
3046 # indevs / outdevs
3047 alsa_indev_deps="alsa"
3048 alsa_outdev_deps="alsa"
3049 avfoundation_indev_deps="avfoundation pthreads"
3050 avfoundation_indev_extralibs="-framework Foundation -framework CoreVideo -framework CoreMedia"
3051 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3052 caca_outdev_deps="libcaca"
3053 decklink_indev_deps="decklink threads"
3054 decklink_indev_extralibs="-lstdc++"
3055 decklink_outdev_deps="decklink threads"
3056 decklink_outdev_extralibs="-lstdc++"
3057 libndi_newtek_indev_deps="libndi_newtek"
3058 libndi_newtek_indev_extralibs="-lndi"
3059 libndi_newtek_outdev_deps="libndi_newtek"
3060 libndi_newtek_outdev_extralibs="-lndi"
3061 dshow_indev_deps="IBaseFilter"
3062 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3063 dv1394_indev_deps="dv1394"
3064 dv1394_indev_select="dv_demuxer"
3065 fbdev_indev_deps="linux_fb_h"
3066 fbdev_outdev_deps="linux_fb_h"
3067 gdigrab_indev_deps="CreateDIBSection"
3068 gdigrab_indev_extralibs="-lgdi32"
3069 gdigrab_indev_select="bmp_decoder"
3070 iec61883_indev_deps="libiec61883"
3071 jack_indev_deps="jack"
3072 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3073 kmsgrab_indev_deps="libdrm"
3074 lavfi_indev_deps="avfilter"
3075 libcdio_indev_deps="libcdio"
3076 libdc1394_indev_deps="libdc1394"
3077 libv4l2_indev_deps="libv4l2"
3078 openal_indev_deps="openal"
3079 opengl_outdev_deps="opengl"
3080 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3081 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3082 pulse_indev_deps="libpulse"
3083 pulse_outdev_deps="libpulse"
3084 sdl2_outdev_deps="sdl2"
3085 sndio_indev_deps="sndio"
3086 sndio_outdev_deps="sndio"
3087 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3088 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3089 vfwcap_indev_deps="vfw32 vfwcap_defines"
3090 xcbgrab_indev_deps="libxcb"
3091 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3092 xv_outdev_extralibs="-lXv -lX11 -lXext"
3093
3094 # protocols
3095 async_protocol_deps="threads"
3096 bluray_protocol_deps="libbluray"
3097 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3098 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3099 ffrtmpcrypt_protocol_select="tcp_protocol"
3100 ffrtmphttp_protocol_deps="!librtmp_protocol"
3101 ffrtmphttp_protocol_select="http_protocol"
3102 ftp_protocol_select="tcp_protocol"
3103 gopher_protocol_select="network"
3104 http_protocol_select="tcp_protocol"
3105 httpproxy_protocol_select="tcp_protocol"
3106 https_protocol_select="tls_protocol"
3107 icecast_protocol_select="http_protocol"
3108 librtmp_protocol_deps="librtmp"
3109 librtmpe_protocol_deps="librtmp"
3110 librtmps_protocol_deps="librtmp"
3111 librtmpt_protocol_deps="librtmp"
3112 librtmpte_protocol_deps="librtmp"
3113 libsmbclient_protocol_deps="libsmbclient gplv3"
3114 libssh_protocol_deps="libssh"
3115 mmsh_protocol_select="http_protocol"
3116 mmst_protocol_select="network"
3117 rtmp_protocol_deps="!librtmp_protocol"
3118 rtmp_protocol_select="tcp_protocol"
3119 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3120 rtmps_protocol_deps="!librtmp_protocol"
3121 rtmps_protocol_select="tls_protocol"
3122 rtmpt_protocol_select="ffrtmphttp_protocol"
3123 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3124 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3125 rtp_protocol_select="udp_protocol"
3126 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3127 sctp_protocol_select="network"
3128 srtp_protocol_select="rtp_protocol srtp"
3129 tcp_protocol_select="network"
3130 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3131 tls_gnutls_protocol_select="tcp_protocol"
3132 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3133 tls_openssl_protocol_select="tcp_protocol"
3134 tls_schannel_protocol_deps="schannel"
3135 tls_schannel_protocol_select="tcp_protocol"
3136 tls_securetransport_protocol_deps="securetransport"
3137 tls_securetransport_protocol_select="tcp_protocol"
3138 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3139 udp_protocol_select="network"
3140 udplite_protocol_select="network"
3141 unix_protocol_deps="sys_un_h"
3142 unix_protocol_select="network"
3143
3144 # filters
3145 afftfilt_filter_deps="avcodec"
3146 afftfilt_filter_select="fft"
3147 afir_filter_deps="avcodec"
3148 afir_filter_select="fft"
3149 amovie_filter_deps="avcodec avformat"
3150 aresample_filter_deps="swresample"
3151 ass_filter_deps="libass"
3152 atempo_filter_deps="avcodec"
3153 atempo_filter_select="rdft"
3154 azmq_filter_deps="libzmq"
3155 blackframe_filter_deps="gpl"
3156 boxblur_filter_deps="gpl"
3157 bs2b_filter_deps="libbs2b"
3158 colormatrix_filter_deps="gpl"
3159 coreimage_filter_deps="coreimage appkit"
3160 coreimage_filter_extralibs="-framework OpenGL"
3161 coreimagesrc_filter_deps="coreimage appkit"
3162 coreimagesrc_filter_extralibs="-framework OpenGL"
3163 cover_rect_filter_deps="avcodec avformat gpl"
3164 cropdetect_filter_deps="gpl"
3165 deinterlace_qsv_filter_deps="libmfx"
3166 deinterlace_vaapi_filter_deps="vaapi"
3167 delogo_filter_deps="gpl"
3168 deshake_filter_select="pixelutils"
3169 drawtext_filter_deps="libfreetype"
3170 elbg_filter_deps="avcodec"
3171 eq_filter_deps="gpl"
3172 fftfilt_filter_deps="avcodec"
3173 fftfilt_filter_select="rdft"
3174 find_rect_filter_deps="avcodec avformat gpl"
3175 firequalizer_filter_deps="avcodec"
3176 firequalizer_filter_select="rdft"
3177 flite_filter_deps="libflite"
3178 framerate_filter_select="pixelutils"
3179 frei0r_filter_deps="frei0r dlopen"
3180 frei0r_src_filter_deps="frei0r dlopen"
3181 fspp_filter_deps="gpl"
3182 geq_filter_deps="gpl"
3183 histeq_filter_deps="gpl"
3184 hqdn3d_filter_deps="gpl"
3185 interlace_filter_deps="gpl"
3186 kerndeint_filter_deps="gpl"
3187 ladspa_filter_deps="ladspa dlopen"
3188 mcdeint_filter_deps="avcodec gpl"
3189 movie_filter_deps="avcodec avformat"
3190 mpdecimate_filter_deps="gpl"
3191 mpdecimate_filter_select="pixelutils"
3192 mptestsrc_filter_deps="gpl"
3193 negate_filter_deps="lut_filter"
3194 nnedi_filter_deps="gpl"
3195 ocr_filter_deps="libtesseract"
3196 ocv_filter_deps="libopencv"
3197 owdenoise_filter_deps="gpl"
3198 pan_filter_deps="swresample"
3199 perspective_filter_deps="gpl"
3200 phase_filter_deps="gpl"
3201 pp7_filter_deps="gpl"
3202 pp_filter_deps="gpl postproc"
3203 pullup_filter_deps="gpl"
3204 removelogo_filter_deps="avcodec avformat swscale"
3205 repeatfields_filter_deps="gpl"
3206 resample_filter_deps="avresample"
3207 rubberband_filter_deps="librubberband"
3208 sab_filter_deps="gpl swscale"
3209 scale2ref_filter_deps="swscale"
3210 scale_filter_deps="swscale"
3211 scale_qsv_filter_deps="libmfx"
3212 select_filter_select="pixelutils"
3213 showcqt_filter_deps="avcodec avformat swscale"
3214 showcqt_filter_select="fft"
3215 showfreqs_filter_deps="avcodec"
3216 showfreqs_filter_select="fft"
3217 showspectrum_filter_deps="avcodec"
3218 showspectrum_filter_select="fft"
3219 showspectrumpic_filter_deps="avcodec"
3220 showspectrumpic_filter_select="fft"
3221 signature_filter_deps="gpl avcodec avformat"
3222 smartblur_filter_deps="gpl swscale"
3223 sofalizer_filter_deps="libmysofa avcodec"
3224 sofalizer_filter_select="fft"
3225 spectrumsynth_filter_deps="avcodec"
3226 spectrumsynth_filter_select="fft"
3227 spp_filter_deps="gpl avcodec"
3228 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3229 stereo3d_filter_deps="gpl"
3230 subtitles_filter_deps="avformat avcodec libass"
3231 super2xsai_filter_deps="gpl"
3232 pixfmts_super2xsai_test_deps="super2xsai_filter"
3233 tinterlace_filter_deps="gpl"
3234 tinterlace_merge_test_deps="tinterlace_filter"
3235 tinterlace_pad_test_deps="tinterlace_filter"
3236 tonemap_filter_deps="const_nan"
3237 uspp_filter_deps="gpl avcodec"
3238 vaguedenoiser_filter_deps="gpl"
3239 vidstabdetect_filter_deps="libvidstab"
3240 vidstabtransform_filter_deps="libvidstab"
3241 libvmaf_filter_deps="libvmaf"
3242 zmq_filter_deps="libzmq"
3243 zoompan_filter_deps="swscale"
3244 zscale_filter_deps="libzimg const_nan"
3245 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3246
3247 # examples
3248 avio_dir_cmd_deps="avformat avutil"
3249 avio_reading_deps="avformat avcodec avutil"
3250 decode_audio_example_deps="avcodec avutil"
3251 decode_video_example_deps="avcodec avutil"
3252 demuxing_decoding_example_deps="avcodec avformat avutil"
3253 encode_audio_example_deps="avcodec avutil"
3254 encode_video_example_deps="avcodec avutil"
3255 extract_mvs_example_deps="avcodec avformat avutil"
3256 filter_audio_example_deps="avfilter avutil"
3257 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3258 filtering_video_example_deps="avfilter avcodec avformat avutil"
3259 http_multiclient_example_deps="avformat avutil fork"
3260 hw_decode_example_deps="avcodec avformat avutil"
3261 metadata_example_deps="avformat avutil"
3262 muxing_example_deps="avcodec avformat avutil swscale"
3263 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3264 remuxing_example_deps="avcodec avformat avutil"
3265 resampling_audio_example_deps="avutil swresample"
3266 scaling_video_example_deps="avutil swscale"
3267 transcode_aac_example_deps="avcodec avformat swresample"
3268 transcoding_example_deps="avfilter avcodec avformat avutil"
3269
3270 # libraries, in linking order
3271 avcodec_deps="avutil"
3272 avcodec_select="null_bsf"
3273 avdevice_deps="avformat avcodec avutil"
3274 avfilter_deps="avutil"
3275 avformat_deps="avcodec avutil"
3276 avresample_deps="avutil"
3277 postproc_deps="avutil gpl"
3278 swresample_deps="avutil"
3279 swscale_deps="avutil"
3280
3281 # programs
3282 ffmpeg_deps="avcodec avfilter avformat swresample"
3283 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3284                null_filter
3285                trim_filter"
3286 ffplay_deps="avcodec avformat swscale swresample sdl2"
3287 ffplay_extralibs='$sdl2_extralibs'
3288 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3289 ffprobe_deps="avcodec avformat"
3290 ffserver_deps="avformat fork sarestart"
3291 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3292
3293 # documentation
3294 podpages_deps="perl"
3295 manpages_deps="perl pod2man"
3296 htmlpages_deps="perl"
3297 htmlpages_deps_any="makeinfo_html texi2html"
3298 txtpages_deps="perl makeinfo"
3299 doc_deps_any="manpages htmlpages podpages txtpages"
3300
3301 # default parameters
3302
3303 logfile="ffbuild/config.log"
3304
3305 # installation paths
3306 prefix_default="/usr/local"
3307 bindir_default='${prefix}/bin'
3308 datadir_default='${prefix}/share/ffmpeg'
3309 docdir_default='${prefix}/share/doc/ffmpeg'
3310 incdir_default='${prefix}/include'
3311 libdir_default='${prefix}/lib'
3312 mandir_default='${prefix}/share/man'
3313
3314 # toolchain
3315 ar_default="ar"
3316 cc_default="gcc"
3317 cxx_default="g++"
3318 host_cc_default="gcc"
3319 doxygen_default="doxygen"
3320 install="install"
3321 ln_s_default="ln -s -f"
3322 nm_default="nm -g"
3323 pkg_config_default=pkg-config
3324 ranlib_default="ranlib"
3325 strip_default="strip"
3326 version_script='--version-script'
3327 x86asmexe_default="nasm"
3328 windres_default="windres"
3329 nvcc_default="nvcc"
3330 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3331
3332 # OS
3333 target_os_default=$(tolower $(uname -s))
3334 host_os=$target_os_default
3335
3336 # machine
3337 if test "$target_os_default" = aix; then
3338     arch_default=$(uname -p)
3339     strip_default="strip -X32_64"
3340 else
3341     arch_default=$(uname -m)
3342 fi
3343 cpu="generic"
3344 intrinsics="none"
3345
3346 # configurable options
3347 enable $PROGRAM_LIST
3348 enable $DOCUMENT_LIST
3349 enable $EXAMPLE_LIST
3350 enable $(filter_out avresample $LIBRARY_LIST)
3351 enable stripping
3352
3353 enable asm
3354 enable debug
3355 enable doc
3356 enable faan faandct faanidct
3357 enable optimizations
3358 enable runtime_cpudetect
3359 enable safe_bitstream_reader
3360 enable static
3361 enable swscale_alpha
3362 enable valgrind_backtrace
3363
3364 sws_max_filter_size_default=256
3365 set_default sws_max_filter_size
3366
3367 # build settings
3368 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3369 LIBPREF="lib"
3370 LIBSUF=".a"
3371 FULLNAME='$(NAME)$(BUILDSUF)'
3372 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3373 SLIBPREF="lib"
3374 SLIBSUF=".so"
3375 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3376 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3377 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3378 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3379 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3380 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3381 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3382
3383 asflags_filter=echo
3384 cflags_filter=echo
3385 ldflags_filter=echo
3386
3387 AS_C='-c'
3388 AS_O='-o $@'
3389 CC_C='-c'
3390 CC_E='-E -o $@'
3391 CC_O='-o $@'
3392 CXX_C='-c'
3393 CXX_O='-o $@'
3394 OBJCC_C='-c'
3395 OBJCC_E='-E -o $@'
3396 OBJCC_O='-o $@'
3397 X86ASM_O='-o $@'
3398 LD_O='-o $@'
3399 LD_LIB='-l%'
3400 LD_PATH='-L'
3401 HOSTCC_C='-c'
3402 HOSTCC_E='-E -o $@'
3403 HOSTCC_O='-o $@'
3404 HOSTLD_O='-o $@'
3405 NVCC_C='-c'
3406 NVCC_O='-o $@'
3407
3408 host_extralibs='-lm'
3409 host_cflags_filter=echo
3410 host_ldflags_filter=echo
3411
3412 target_path='$(CURDIR)'
3413
3414 # since the object filename is not given with the -MM flag, the compiler
3415 # is only able to print the basename, and we must add the path ourselves
3416 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3417 DEPFLAGS='-MM'
3418
3419 mkdir -p ffbuild
3420
3421 # find source path
3422 if test -f configure; then
3423     source_path=.
3424 else
3425     source_path=$(cd $(dirname "$0"); pwd)
3426     case "$source_path" in
3427         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3428     esac
3429     test -e "$source_path/config.h" &&
3430         die "Out of tree builds are impossible with config.h in source dir."
3431 fi
3432
3433 for v in "$@"; do
3434     r=${v#*=}
3435     l=${v%"$r"}
3436     r=$(sh_quote "$r")
3437     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3438 done
3439
3440 find_things(){
3441     thing=$1
3442     pattern=$2
3443     file=$source_path/$3
3444     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3445 }
3446
3447 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3448 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3449 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3450 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3451 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3452 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3453 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3454 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3455 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3456
3457 find_things_extern(){
3458     thing=$1
3459     pattern=$2
3460     file=$source_path/$3
3461     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3462 }
3463
3464 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3465 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3466
3467 ALL_COMPONENTS="
3468     $BSF_LIST
3469     $DECODER_LIST
3470     $DEMUXER_LIST
3471     $ENCODER_LIST
3472     $FILTER_LIST
3473     $HWACCEL_LIST
3474     $INDEV_LIST
3475     $MUXER_LIST
3476     $OUTDEV_LIST
3477     $PARSER_LIST
3478     $PROTOCOL_LIST
3479 "
3480
3481 for n in $COMPONENT_LIST; do
3482     v=$(toupper ${n%s})_LIST
3483     eval enable \$$v
3484     eval ${n}_if_any="\$$v"
3485 done
3486
3487 enable $ARCH_EXT_LIST
3488
3489 die_unknown(){
3490     echo "Unknown option \"$1\"."
3491     echo "See $0 --help for available options."
3492     exit 1
3493 }
3494
3495 print_in_columns() {
3496     cols=$(expr $ncols / 24)
3497     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3498 }
3499
3500 show_list() {
3501     suffix=_$1
3502     shift
3503     echo $* | sed s/$suffix//g | print_in_columns
3504     exit 0
3505 }
3506
3507 rand_list(){
3508     IFS=', '
3509     set -- $*
3510     unset IFS
3511     for thing; do
3512         comp=${thing%:*}
3513         prob=${thing#$comp}
3514         prob=${prob#:}
3515         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3516         echo "prob ${prob:-0.5}"
3517         printf '%s\n' $comp
3518     done
3519 }
3520
3521 do_random(){
3522     action=$1
3523     shift
3524     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3525     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3526 }
3527
3528 for opt do
3529     optval="${opt#*=}"
3530     case "$opt" in
3531         --extra-ldflags=*)
3532             add_ldflags $optval
3533         ;;
3534         --extra-ldexeflags=*)
3535             add_ldexeflags $optval
3536         ;;
3537         --extra-ldlibflags=*)
3538             add_ldlibflags $optval
3539         ;;
3540         --extra-libs=*)
3541             add_extralibs $optval
3542         ;;
3543         --disable-devices)
3544             disable $INDEV_LIST $OUTDEV_LIST
3545         ;;
3546         --enable-debug=*)
3547             debuglevel="$optval"
3548         ;;
3549         --disable-programs)
3550             disable $PROGRAM_LIST
3551         ;;
3552         --disable-everything)
3553             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3554         ;;
3555         --disable-all)
3556             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3557             disable $LIBRARY_LIST $PROGRAM_LIST doc
3558             enable avutil
3559         ;;
3560         --enable-random|--disable-random)
3561             action=${opt%%-random}
3562             do_random ${action#--} $COMPONENT_LIST
3563         ;;
3564         --enable-random=*|--disable-random=*)
3565             action=${opt%%-random=*}
3566             do_random ${action#--} $optval
3567         ;;
3568         --enable-sdl)
3569             enable sdl2
3570         ;;
3571         --enable-*=*|--disable-*=*)
3572             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3573             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3574             eval list=\$$(toupper $thing)_LIST
3575             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3576             list=$(filter "$name" $list)
3577             [ "$list" = "" ] && warn "Option $opt did not match anything"
3578             $action $list
3579         ;;
3580         --enable-yasm|--disable-yasm)
3581             warn "The ${opt} option is only provided for compatibility and will be\n"\
3582                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3583             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3584         ;;
3585         --yasmexe=*)
3586             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3587                  "removed in the future. Use --x86asmexe instead."
3588             x86asmexe="$optval"
3589         ;;
3590         --enable-?*|--disable-?*)
3591             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3592             if is_in $option $COMPONENT_LIST; then
3593                 test $action = disable && action=unset
3594                 eval $action \$$(toupper ${option%s})_LIST
3595             elif is_in $option $CMDLINE_SELECT; then
3596                 $action $option
3597             else
3598                 die_unknown $opt
3599             fi
3600         ;;
3601         --list-*)
3602             NAME="${opt#--list-}"
3603             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3604             NAME=${NAME%s}
3605             eval show_list $NAME \$$(toupper $NAME)_LIST
3606         ;;
3607         --help|-h) show_help
3608         ;;
3609         --quiet|-q) quiet=yes
3610         ;;
3611         --fatal-warnings) enable fatal_warnings
3612         ;;
3613         --libfuzzer=*)
3614             libfuzzer_path="$optval"
3615         ;;
3616         *)
3617             optname="${opt%%=*}"
3618             optname="${optname#--}"
3619             optname=$(echo "$optname" | sed 's/-/_/g')
3620             if is_in $optname $CMDLINE_SET; then
3621                 eval $optname='$optval'
3622             elif is_in $optname $CMDLINE_APPEND; then
3623                 append $optname "$optval"
3624             else
3625                 die_unknown $opt
3626             fi
3627         ;;
3628     esac
3629 done
3630
3631 for e in $env; do
3632     eval "export $e"
3633 done
3634
3635 if disabled autodetect; then
3636
3637     # Unless iconv is explicitely disabled by the user, we still want to probe
3638     # for the iconv from the libc.
3639     disabled iconv || enable libc_iconv
3640
3641     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3642     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3643 fi
3644 # Mark specifically enabled, but normally autodetected libraries as requested.
3645 for lib in $AUTODETECT_LIBS; do
3646     enabled $lib && request $lib
3647 done
3648 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3649 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3650 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3651
3652 disabled logging && logfile=/dev/null
3653
3654 die_license_disabled() {
3655     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3656 }
3657
3658 die_license_disabled_gpl() {
3659     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3660 }
3661
3662 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3663 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3664
3665 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3666 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3667
3668 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3669
3670 # Disable all the library-specific components if the library itself
3671 # is disabled, see AVCODEC_LIST and following _LIST variables.
3672
3673 disable_components(){
3674     disabled ${1} && disable $(
3675         eval components="\$$(toupper ${1})_COMPONENTS"
3676         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3677     )
3678 }
3679
3680 map 'disable_components $v' $LIBRARY_LIST
3681
3682 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3683 set >> $logfile
3684
3685 test -n "$valgrind" && toolchain="valgrind-memcheck"
3686
3687 enabled ossfuzz && {
3688     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3689     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3690 }
3691
3692 case "$toolchain" in
3693     *-asan)
3694         cc_default="${toolchain%-asan}"
3695         add_cflags  -fsanitize=address
3696         add_ldflags -fsanitize=address
3697     ;;
3698     *-msan)
3699         cc_default="${toolchain%-msan}"
3700         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3701         add_ldflags -fsanitize=memory
3702     ;;
3703     *-tsan)
3704         cc_default="${toolchain%-tsan}"
3705         add_cflags  -fsanitize=thread -fPIE
3706         add_ldflags -fsanitize=thread -pie
3707         case "$toolchain" in
3708             gcc-tsan)
3709                 add_cflags  -fPIC
3710                 add_ldflags -fPIC
3711                 ;;
3712         esac
3713     ;;
3714     *-usan)
3715         cc_default="${toolchain%-usan}"
3716         add_cflags  -fsanitize=undefined
3717         add_ldflags -fsanitize=undefined
3718     ;;
3719     valgrind-*)
3720         target_exec_default="valgrind"
3721         case "$toolchain" in
3722             valgrind-massif)
3723                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3724                 ;;
3725             valgrind-memcheck)
3726                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3727                 ;;
3728         esac
3729     ;;
3730     msvc)
3731         # Check whether the current MSVC version needs the C99 converter.
3732         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3733         # support enough of C99 to build ffmpeg. Default to the new
3734         # behaviour if the regexp was unable to match anything, since this
3735         # successfully parses the version number of existing supported
3736         # versions that require the converter (MSVC 2010 and 2012).
3737         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3738         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3739             cc_default="cl"
3740             cxx_default="cl"
3741         else
3742             cc_default="c99wrap cl"
3743             cxx_default="c99wrap cl"
3744         fi
3745         ld_default="$source_path/compat/windows/mslink"
3746         nm_default="dumpbin -symbols"
3747         ar_default="lib"
3748         case "$arch" in
3749         arm*)
3750             as_default="armasm"
3751             ;;
3752         esac
3753         target_os_default="win32"
3754         # Use a relative path for TMPDIR. This makes sure all the
3755         # ffconf temp files are written with a relative path, avoiding
3756         # issues with msys/win32 path conversion for MSVC parameters
3757         # such as -Fo<file> or -out:<file>.
3758         TMPDIR=.
3759     ;;
3760     icl)
3761         cc_default="icl"
3762         ld_default="xilink"
3763         nm_default="dumpbin -symbols"
3764         ar_default="xilib"
3765         target_os_default="win32"
3766         TMPDIR=.
3767     ;;
3768     gcov)
3769         add_cflags  -fprofile-arcs -ftest-coverage
3770         add_ldflags -fprofile-arcs -ftest-coverage
3771     ;;
3772     llvm-cov)
3773         add_cflags -fprofile-arcs -ftest-coverage
3774         add_ldflags --coverage
3775     ;;
3776     hardened)
3777         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3778         add_cflags   -fno-strict-overflow -fstack-protector-all
3779         add_ldflags  -Wl,-z,relro -Wl,-z,now
3780         add_cflags   -fPIE
3781         add_ldexeflags -fPIE -pie
3782     ;;
3783     ?*)
3784         die "Unknown toolchain $toolchain"
3785     ;;
3786 esac
3787
3788 test -n "$cross_prefix" && enable cross_compile
3789
3790 if enabled cross_compile; then
3791     test -n "$arch" && test -n "$target_os" ||
3792         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3793 fi
3794
3795 ar_default="${cross_prefix}${ar_default}"
3796 cc_default="${cross_prefix}${cc_default}"
3797 cxx_default="${cross_prefix}${cxx_default}"
3798 nm_default="${cross_prefix}${nm_default}"
3799 pkg_config_default="${cross_prefix}${pkg_config_default}"
3800 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3801     ranlib_default="${cross_prefix}${ranlib_default} -D"
3802 else
3803     ranlib_default="${cross_prefix}${ranlib_default}"
3804 fi
3805 strip_default="${cross_prefix}${strip_default}"
3806 windres_default="${cross_prefix}${windres_default}"
3807
3808 sysinclude_default="${sysroot}/usr/include"
3809
3810 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3811     target_exec target_os x86asmexe nvcc
3812 enabled cross_compile || host_cc_default=$cc
3813 set_default host_cc
3814
3815 pkg_config_fail_message=""
3816 if ! $pkg_config --version >/dev/null 2>&1; then
3817     warn "$pkg_config not found, library detection may fail."
3818     pkg_config=false
3819 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3820     pkg_config_fail_message="
3821 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3822 fi
3823
3824 if test $doxygen != $doxygen_default && \
3825   ! $doxygen --version >/dev/null 2>&1; then
3826     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3827 fi
3828
3829 exesuf() {
3830     case $1 in
3831         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3832     esac
3833 }
3834
3835 EXESUF=$(exesuf $target_os)
3836 HOSTEXESUF=$(exesuf $host_os)
3837
3838 # set temporary file name
3839 : ${TMPDIR:=$TEMPDIR}
3840 : ${TMPDIR:=$TMP}
3841 : ${TMPDIR:=/tmp}
3842
3843 if [ -n "$tempprefix" ] ; then
3844     mktemp(){
3845         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3846         echo "$tmpname"
3847         mkdir "$tmpname"
3848     }
3849 elif ! check_cmd mktemp -u XXXXXX; then
3850     # simple replacement for missing mktemp
3851     # NOT SAFE FOR GENERAL USE
3852     mktemp(){
3853         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3854         echo "$tmpname"
3855         mkdir "$tmpname"
3856     }
3857 fi
3858
3859 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3860     die "Unable to create temporary directory in $TMPDIR."
3861
3862 tmpfile(){
3863     tmp="${FFTMPDIR}/test"$2
3864     (set -C; exec > $tmp) 2> /dev/null ||
3865         die "Unable to create temporary file in $FFTMPDIR."
3866     eval $1=$tmp
3867 }
3868
3869 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3870 trap 'exit 2' INT
3871
3872 tmpfile TMPASM .asm
3873 tmpfile TMPC   .c
3874 tmpfile TMPCPP .cpp
3875 tmpfile TMPE   $EXESUF
3876 tmpfile TMPH   .h
3877 tmpfile TMPM   .m
3878 tmpfile TMPO   .o
3879 tmpfile TMPS   .S
3880 tmpfile TMPSH  .sh
3881 tmpfile TMPV   .ver
3882
3883 unset -f mktemp
3884
3885 chmod +x $TMPE
3886
3887 # make sure we can execute files in $TMPDIR
3888 cat > $TMPSH 2>> $logfile <<EOF
3889 #! /bin/sh
3890 EOF
3891 chmod +x $TMPSH >> $logfile 2>&1
3892 if ! $TMPSH >> $logfile 2>&1; then
3893     cat <<EOF
3894 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3895 variable to another directory and make sure that it is not mounted noexec.
3896 EOF
3897     die "Sanity test failed."
3898 fi
3899
3900 armasm_flags(){
3901     for flag; do
3902         case $flag in
3903             # Filter out MSVC cl.exe options from cflags that shouldn't
3904             # be passed to gas-preprocessor
3905             -M[TD]*)                                            ;;
3906             *)                  echo $flag                      ;;
3907         esac
3908    done
3909 }
3910
3911 ccc_flags(){
3912     for flag; do
3913         case $flag in
3914             -std=c99)           echo -c99                       ;;
3915             -mcpu=*)            echo -arch ${flag#*=}           ;;
3916             -mieee)             echo -ieee                      ;;
3917             -O*|-fast)          echo $flag                      ;;
3918             -fno-math-errno)    echo -assume nomath_errno       ;;
3919             -g)                 echo -g3                        ;;
3920             -Wall)              echo -msg_enable level2         ;;
3921             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3922             -Wl,*)              echo $flag                      ;;
3923             -f*|-W*)                                            ;;
3924             *)                  echo $flag                      ;;
3925         esac
3926    done
3927 }
3928
3929 cparser_flags(){
3930     for flag; do
3931         case $flag in
3932             -Wno-switch)             echo -Wno-switch-enum ;;
3933             -Wno-format-zero-length) ;;
3934             -Wdisabled-optimization) ;;
3935             -Wno-pointer-sign)       echo -Wno-other ;;
3936             *)                       echo $flag ;;
3937         esac
3938     done
3939 }
3940
3941 msvc_common_flags(){
3942     for flag; do
3943         case $flag in
3944             # In addition to specifying certain flags under the compiler
3945             # specific filters, they must be specified here as well or else the
3946             # generic catch all at the bottom will print the original flag.
3947             -Wall)                ;;
3948             -Wextra)              ;;
3949             -std=c99)             ;;
3950             # Common flags
3951             -fomit-frame-pointer) ;;
3952             -g)                   echo -Z7 ;;
3953             -fno-math-errno)      ;;
3954             -fno-common)          ;;
3955             -fno-signed-zeros)    ;;
3956             -fPIC)                ;;
3957             -mthumb)              ;;
3958             -march=*)             ;;
3959             -lz)                  echo zlib.lib ;;
3960             -lx264)               echo libx264.lib ;;
3961             -lstdc++)             ;;
3962             -l*)                  echo ${flag#-l}.lib ;;
3963             -LARGEADDRESSAWARE)   echo $flag ;;
3964             -L*)                  echo -libpath:${flag#-L} ;;
3965             *)                    echo $flag ;;
3966         esac
3967     done
3968 }
3969
3970 msvc_flags(){
3971     msvc_common_flags "$@"
3972     for flag; do
3973         case $flag in
3974             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3975                                        -wd4554 ;;
3976             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3977                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3978                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3979                                        -wd4307 \
3980                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3981         esac
3982     done
3983 }
3984
3985 icl_flags(){
3986     msvc_common_flags "$@"
3987     for flag; do
3988         case $flag in
3989             # Despite what Intel's documentation says -Wall, which is supported
3990             # on Windows, does enable remarks so disable them here.
3991             -Wall)                echo $flag -Qdiag-disable:remark ;;
3992             -std=c99)             echo -Qstd=c99 ;;
3993             -flto)                echo -ipo ;;
3994         esac
3995     done
3996 }
3997
3998 icc_flags(){
3999     for flag; do
4000         case $flag in
4001             -flto)                echo -ipo ;;
4002             *)                    echo $flag ;;
4003         esac
4004     done
4005 }
4006
4007 pgi_flags(){
4008     for flag; do
4009         case $flag in
4010             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
4011             -fomit-frame-pointer) echo -Mnoframe ;;
4012             -g)                   echo -gopt ;;
4013             *)                    echo $flag ;;
4014         esac
4015     done
4016 }
4017
4018 suncc_flags(){
4019     for flag; do
4020         case $flag in
4021             -march=*|-mcpu=*)
4022                 case "${flag#*=}" in
4023                     native)                   echo -xtarget=native       ;;
4024                     v9|niagara)               echo -xarch=sparc          ;;
4025                     ultrasparc)               echo -xarch=sparcvis       ;;
4026                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4027                     i586|pentium)             echo -xchip=pentium        ;;
4028                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4029                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4030                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4031                     pentium4*)          echo -xtarget=pentium4           ;;
4032                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4033                     *-sse3)             echo -xarch=sse3                 ;;
4034                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4035                     bonnell)                   echo -xarch=ssse3         ;;
4036                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4037                     westmere)                  echo -xtarget=westmere    ;;
4038                     silvermont)                echo -xarch=sse4_2        ;;
4039                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4040                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4041                                                echo -xarch=avx           ;;
4042                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4043                     btver1)                    echo -xarch=amdsse4a      ;;
4044                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4045                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4046                     k8|opteron|athlon64|athlon-fx)
4047                                                echo -xarch=sse2a         ;;
4048                     athlon*)                   echo -xarch=pentium_proa  ;;
4049                 esac
4050                 ;;
4051             -std=c99)             echo -xc99              ;;
4052             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4053             -fPIC)                echo -KPIC -xcode=pic32 ;;
4054             -W*,*)                echo $flag              ;;
4055             -f*-*|-W*|-mimpure-text)                      ;;
4056             -shared)              echo -G                 ;;
4057             *)                    echo $flag              ;;
4058         esac
4059     done
4060 }
4061
4062 tms470_flags(){
4063     for flag; do
4064         case $flag in
4065             -march=*|-mcpu=*)
4066                 case "${flag#*=}" in
4067                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
4068                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
4069                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
4070                     armv6*|arm11*)          echo -mv=6   ;;
4071                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
4072                                             echo -mv=5e  ;;
4073                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
4074                 esac
4075                 ;;
4076             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
4077             -mfpu=vfp)      echo --float_support=vfpv2        ;;
4078             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
4079             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
4080             -msoft-float)   echo --float_support=vfplib       ;;
4081             -O[0-3]|-mf=*)  echo $flag                        ;;
4082             -g)             echo -g -mn                       ;;
4083             -pds=*)         echo $flag                        ;;
4084             -D*|-I*)        echo $flag                        ;;
4085             --gcc|--abi=*)  echo $flag                        ;;
4086             -me)            echo $flag                        ;;
4087         esac
4088     done
4089 }
4090
4091 probe_cc(){
4092     pfx=$1
4093     _cc=$2
4094     first=$3
4095
4096     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4097     unset _ld_o _ldflags _ld_lib _ld_path
4098     unset _depflags _DEPCMD _DEPFLAGS
4099     _flags_filter=echo
4100
4101     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4102         true # no-op to avoid reading stdin in following checks
4103     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4104         _type=llvm_gcc
4105         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4106         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4107         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4108         _cflags_speed='-O3'
4109         _cflags_size='-Os'
4110     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4111         _type=gcc
4112         gcc_version=$($_cc --version | head -n1)
4113         gcc_basever=$($_cc -dumpversion)
4114         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4115         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4116         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4117         case $gcc_basever in
4118             2) ;;
4119             2.*) ;;
4120             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4121         esac
4122         if [ "$first" = true ]; then
4123             case $gcc_basever in
4124                 4.2*)
4125                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4126             esac
4127         fi
4128         _cflags_speed='-O3'
4129         _cflags_size='-Os'
4130     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4131         _type=icc
4132         _ident=$($_cc --version | head -n1)
4133         _depflags='-MMD'
4134         _cflags_speed='-O3'
4135         _cflags_size='-Os'
4136         _cflags_noopt='-O1'
4137         _flags_filter=icc_flags
4138     elif $_cc -v 2>&1 | grep -q xlc; then
4139         _type=xlc
4140         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4141         _cflags_speed='-O5'
4142         _cflags_size='-O5 -qcompact'
4143     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4144         _type=ccc
4145         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4146         _DEPFLAGS='-M'
4147         _cflags_speed='-fast'
4148         _cflags_size='-O1'
4149         _flags_filter=ccc_flags
4150     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4151         test -d "$sysroot" || die "No valid sysroot specified."
4152         _type=armcc
4153         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4154         armcc_conf="$PWD/armcc.conf"
4155         $_cc --arm_linux_configure                 \
4156              --arm_linux_config_file="$armcc_conf" \
4157              --configure_sysroot="$sysroot"        \
4158              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4159              die "Error creating armcc configuration file."
4160         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4161         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4162         as_default="${cross_prefix}gcc"
4163         _depflags='-MMD'
4164         _cflags_speed='-O3'
4165         _cflags_size='-Os'
4166     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4167         _type=tms470
4168         _ident=$($_cc -version | head -n1 | tr -s ' ')
4169         _flags='--gcc --abi=eabi -me'
4170         _cc_e='-ppl -fe=$@'
4171         _cc_o='-fe=$@'
4172         _depflags='-ppa -ppd=$(@:.o=.d)'
4173         _cflags_speed='-O3 -mf=5'
4174         _cflags_size='-O3 -mf=2'
4175         _flags_filter=tms470_flags
4176     elif $_cc -v 2>&1 | grep -q clang; then
4177         _type=clang
4178         _ident=$($_cc --version 2>/dev/null | head -n1)
4179         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4180         _cflags_speed='-O3'
4181         _cflags_size='-Oz'
4182     elif $_cc -V 2>&1 | grep -q Sun; then
4183         _type=suncc
4184         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4185         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4186         _DEPFLAGS='-xM1 -xc99'
4187         _ldflags='-std=c99'
4188         _cflags_speed='-O5'
4189         _cflags_size='-O5 -xspace'
4190         _flags_filter=suncc_flags
4191     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4192         _type=pathscale
4193         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4194         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4195         _cflags_speed='-O2'
4196         _cflags_size='-Os'
4197         _flags_filter='filter_out -Wdisabled-optimization'
4198     elif $_cc -v 2>&1 | grep -q Open64; then
4199         _type=open64
4200         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4201         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4202         _cflags_speed='-O2'
4203         _cflags_size='-Os'
4204         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4205     elif $_cc -V 2>&1 | grep -q Portland; then
4206         _type=pgi
4207         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4208         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4209         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4210         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4211         _cflags_noopt="-O"
4212         _flags_filter=pgi_flags
4213     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4214         _type=armasm
4215         _ident=$($_cc | head -n1)
4216         # 4509: "This form of conditional instruction is deprecated"
4217         _flags="-nologo -ignore 4509"
4218         _flags_filter=armasm_flags
4219     elif $_cc 2>&1 | grep -q Intel; then
4220         _type=icl
4221         _ident=$($_cc 2>&1 | head -n1)
4222         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4223         # Not only is O3 broken on 13.x+ but it is slower on all previous
4224         # versions (tested) as well.
4225         _cflags_speed="-O2"
4226         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4227         if $_cc 2>&1 | grep -q Linker; then
4228             _ld_o='-out:$@'
4229         else
4230             _ld_o='-Fe$@'
4231         fi
4232         _cc_o='-Fo$@'
4233         _cc_e='-P'
4234         _flags_filter=icl_flags
4235         _ld_lib='lib%.a'
4236         _ld_path='-libpath:'
4237         # -Qdiag-error to make icl error when seeing certain unknown arguments
4238         _flags='-nologo -Qdiag-error:4044,10157'
4239         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4240         # with MSVC which enables it by default.
4241         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4242         disable stripping
4243     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4244         # lld can emulate multiple different linkers; in ms link.exe mode,
4245         # the -? parameter gives the help output which contains an identifyable
4246         # string, while it gives an error in other modes.
4247         _type=lld-link
4248         # The link.exe mode doesn't have a switch for getting the version,
4249         # but we can force it back to gnu mode and get the version from there.
4250         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4251         _ld_o='-out:$@'
4252         _flags_filter=msvc_flags
4253         _ld_lib='lib%.a'
4254         _ld_path='-libpath:'
4255     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4256         _type=msvc
4257         _ident=$($_cc 2>&1 | head -n1)
4258         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4259         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4260         _cflags_speed="-O2"
4261         _cflags_size="-O1"
4262         _cflags_noopt="-O1"
4263         if $_cc -nologo- 2>&1 | grep -q Linker; then
4264             _ld_o='-out:$@'
4265         else
4266             _ld_o='-Fe$@'
4267         fi
4268         _cc_o='-Fo$@'
4269         _cc_e='-P -Fi$@'
4270         _flags_filter=msvc_flags
4271         _ld_lib='lib%.a'
4272         _ld_path='-libpath:'
4273         _flags='-nologo'
4274         disable stripping
4275     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4276         _type=cparser
4277         _ident=$($_cc --version | head -n1)
4278         _depflags='-MMD'
4279         _cflags_speed='-O4'
4280         _cflags_size='-O2'
4281         _flags_filter=cparser_flags
4282     fi
4283
4284     eval ${pfx}_type=\$_type
4285     eval ${pfx}_ident=\$_ident
4286 }
4287
4288 set_ccvars(){
4289     eval ${1}_C=\${_cc_c-\${${1}_C}}
4290     eval ${1}_E=\${_cc_e-\${${1}_E}}
4291     eval ${1}_O=\${_cc_o-\${${1}_O}}
4292
4293     if [ -n "$_depflags" ]; then
4294         eval ${1}_DEPFLAGS=\$_depflags
4295     else
4296         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4297         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4298         eval DEP${1}FLAGS=\$_flags
4299     fi
4300 }
4301
4302 probe_cc cc "$cc" "true"
4303 cflags_filter=$_flags_filter
4304 cflags_speed=$_cflags_speed
4305 cflags_size=$_cflags_size
4306 cflags_noopt=$_cflags_noopt
4307 add_cflags $_flags $_cflags
4308 cc_ldflags=$_ldflags
4309 set_ccvars CC
4310 set_ccvars CXX
4311
4312 probe_cc hostcc "$host_cc"
4313 host_cflags_filter=$_flags_filter
4314 host_cflags_speed=$_cflags_speed
4315 add_host_cflags  $_flags $_cflags
4316 set_ccvars HOSTCC
4317
4318 test -n "$cc_type" && enable $cc_type ||
4319     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4320
4321 : ${as_default:=$cc}
4322 : ${objcc_default:=$cc}
4323 : ${dep_cc_default:=$cc}
4324 : ${ld_default:=$cc}
4325 : ${host_ld_default:=$host_cc}
4326 set_default ar as objcc dep_cc ld ln_s host_ld windres
4327
4328 probe_cc as "$as"
4329 asflags_filter=$_flags_filter
4330 add_asflags $_flags $_cflags
4331 set_ccvars AS
4332
4333 probe_cc objcc "$objcc"
4334 objcflags_filter=$_flags_filter
4335 add_objcflags $_flags $_cflags
4336 set_ccvars OBJC
4337
4338 probe_cc ld "$ld"
4339 ldflags_filter=$_flags_filter
4340 add_ldflags $_flags $_ldflags
4341 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4342 LD_O=${_ld_o-$LD_O}
4343 LD_LIB=${_ld_lib-$LD_LIB}
4344 LD_PATH=${_ld_path-$LD_PATH}
4345
4346 probe_cc hostld "$host_ld"
4347 host_ldflags_filter=$_flags_filter
4348 add_host_ldflags $_flags $_ldflags
4349 HOSTLD_O=${_ld_o-$HOSTLD_O}
4350
4351 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4352     probe_cc depcc "$dep_cc"
4353     CCDEP=${_DEPCMD:-$DEPCMD}
4354     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4355     DEPCCFLAGS=$_flags
4356 fi
4357
4358 if $ar 2>&1 | grep -q Microsoft; then
4359     arflags="-nologo"
4360     ar_o='-out:$@'
4361 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4362     arflags="rq"
4363     ar_o='$@'
4364 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4365     arflags='-Xany -r -c'
4366     ar_o='$@'
4367 elif $ar 2>&1 | grep -q "\[D\] "; then
4368     arflags="rcD"
4369     ar_o='$@'
4370 else
4371     arflags="rc"
4372     ar_o='$@'
4373 fi
4374
4375 add_cflags $extra_cflags
4376 add_cxxflags $extra_cxxflags
4377 add_objcflags $extra_objcflags
4378 add_asflags $extra_cflags
4379
4380 if test -n "$sysroot"; then
4381     case "$cc_type" in
4382         gcc|llvm_gcc|clang)
4383             add_cppflags --sysroot="$sysroot"
4384             add_ldflags --sysroot="$sysroot"
4385 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4386             add_cppflags -isysroot "$sysroot"
4387             add_ldflags -isysroot "$sysroot"
4388         ;;
4389         tms470)
4390             add_cppflags -I"$sysinclude"
4391             add_ldflags  --sysroot="$sysroot"
4392         ;;
4393     esac
4394 fi
4395
4396 if test "$cpu" = host; then
4397     enabled cross_compile &&
4398         die "--cpu=host makes no sense when cross-compiling."
4399
4400     case "$cc_type" in
4401         gcc|llvm_gcc)
4402             check_native(){
4403                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4404                 sed -n "/cc1.*$1=/{
4405                             s/.*$1=\\([^ ]*\\).*/\\1/
4406                             p
4407                             q
4408                         }" $TMPE
4409             }
4410             cpu=$(check_native -march || check_native -mcpu)
4411         ;;
4412         clang)
4413             check_native(){
4414                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4415                 sed -n "/cc1.*-target-cpu /{
4416                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4417                             p
4418                             q
4419                         }" $TMPE
4420             }
4421             cpu=$(check_native -march)
4422         ;;
4423     esac
4424
4425     test "${cpu:-host}" = host &&
4426         die "--cpu=host not supported with compiler $cc"
4427 fi
4428
4429 # Deal with common $arch aliases
4430 case "$arch" in
4431     aarch64|arm64)
4432         arch="aarch64"
4433     ;;
4434     arm*|iPad*|iPhone*)
4435         arch="arm"
4436     ;;
4437     mips*|IP*)
4438         case "$arch" in
4439         *el)
4440             add_cppflags -EL
4441             add_ldflags -EL
4442         ;;
4443         *eb)
4444             add_cppflags -EB
4445             add_ldflags -EB
4446         ;;
4447         esac
4448         arch="mips"
4449     ;;
4450     parisc*|hppa*)
4451         arch="parisc"
4452     ;;
4453     "Power Macintosh"|ppc*|powerpc*)
4454         arch="ppc"
4455     ;;
4456     s390|s390x)
4457         arch="s390"
4458     ;;
4459     sh4|sh)
4460         arch="sh4"
4461     ;;
4462     sun4*|sparc*)
4463         arch="sparc"
4464     ;;
4465     tilegx|tile-gx)
4466         arch="tilegx"
4467     ;;
4468     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4469         arch="x86"
4470     ;;
4471 esac
4472
4473 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4474 enable $arch
4475
4476 # Add processor-specific flags
4477 if enabled aarch64; then
4478
4479     case $cpu in
4480         armv*)
4481             cpuflags="-march=$cpu"
4482         ;;
4483         *)
4484             cpuflags="-mcpu=$cpu"
4485         ;;
4486     esac
4487
4488 elif enabled alpha; then
4489
4490     cpuflags="-mcpu=$cpu"
4491
4492 elif enabled arm; then
4493
4494     check_arm_arch() {
4495         check_cpp_condition stddef.h \
4496             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4497             $cpuflags
4498     }
4499
4500     probe_arm_arch() {
4501         if   check_arm_arch 4;        then echo armv4
4502         elif check_arm_arch 4T;       then echo armv4t
4503         elif check_arm_arch 5;        then echo armv5
4504         elif check_arm_arch 5E;       then echo armv5e
4505         elif check_arm_arch 5T;       then echo armv5t
4506         elif check_arm_arch 5TE;      then echo armv5te
4507         elif check_arm_arch 5TEJ;     then echo armv5te
4508         elif check_arm_arch 6;        then echo armv6
4509         elif check_arm_arch 6J;       then echo armv6j
4510         elif check_arm_arch 6K;       then echo armv6k
4511         elif check_arm_arch 6Z;       then echo armv6z
4512         elif check_arm_arch 6ZK;      then echo armv6zk
4513         elif check_arm_arch 6T2;      then echo armv6t2
4514         elif check_arm_arch 7;        then echo armv7
4515         elif check_arm_arch 7A  7_A;  then echo armv7-a
4516         elif check_arm_arch 7S;       then echo armv7-a
4517         elif check_arm_arch 7R  7_R;  then echo armv7-r
4518         elif check_arm_arch 7M  7_M;  then echo armv7-m
4519         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4520         elif check_arm_arch 8A  8_A;  then echo armv8-a
4521         fi
4522     }
4523
4524     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4525
4526     case $cpu in
4527         armv*)
4528             cpuflags="-march=$cpu"
4529             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4530         ;;
4531         *)
4532             cpuflags="-mcpu=$cpu"
4533             case $cpu in
4534                 cortex-a*)                               subarch=armv7a  ;;
4535                 cortex-r*)                               subarch=armv7r  ;;
4536                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4537                 arm11*)                                  subarch=armv6   ;;
4538                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4539                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4540                 *)                             subarch=$(probe_arm_arch) ;;
4541             esac
4542         ;;
4543     esac
4544
4545     case "$subarch" in
4546         armv5t*)    enable fast_clz                ;;
4547         armv[6-8]*)
4548             enable fast_clz
4549             disabled fast_unaligned || enable fast_unaligned
4550             ;;
4551     esac
4552
4553 elif enabled avr32; then
4554
4555     case $cpu in
4556         ap7[02]0[0-2])
4557             subarch="avr32_ap"
4558             cpuflags="-mpart=$cpu"
4559         ;;
4560         ap)
4561             subarch="avr32_ap"
4562             cpuflags="-march=$cpu"
4563         ;;
4564         uc3[ab]*)
4565             subarch="avr32_uc"
4566             cpuflags="-mcpu=$cpu"
4567         ;;
4568         uc)
4569             subarch="avr32_uc"
4570             cpuflags="-march=$cpu"
4571         ;;
4572     esac
4573
4574 elif enabled bfin; then
4575
4576     cpuflags="-mcpu=$cpu"
4577
4578 elif enabled mips; then
4579
4580     cpuflags="-march=$cpu"
4581
4582     if [ "$cpu" != "generic" ]; then
4583         disable mips32r2
4584         disable mips32r5
4585         disable mips64r2
4586         disable mips32r6
4587         disable mips64r6
4588         disable loongson2
4589         disable loongson3
4590
4591         case $cpu in
4592             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4593                 enable mips32r2
4594                 disable msa
4595             ;;
4596             p5600|i6400|p6600)
4597                 disable mipsdsp
4598                 disable mipsdspr2
4599             ;;
4600             loongson*)
4601                 enable loongson2
4602                 enable loongson3
4603                 enable local_aligned_8 local_aligned_16 local_aligned_32
4604                 enable simd_align_16
4605                 enable fast_64bit
4606                 enable fast_clz
4607                 enable fast_cmov
4608                 enable fast_unaligned
4609                 disable aligned_stack
4610                 disable mipsfpu
4611                 disable mipsdsp
4612                 disable mipsdspr2
4613                 case $cpu in
4614                     loongson3*)
4615                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4616                     ;;
4617                     loongson2e)
4618                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4619                     ;;
4620                     loongson2f)
4621                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4622                     ;;
4623                 esac
4624             ;;
4625             *)
4626                 # Unknown CPU. Disable everything.
4627                 warn "unknown CPU. Disabling all MIPS optimizations."
4628                 disable mipsfpu
4629                 disable mipsdsp
4630                 disable mipsdspr2
4631                 disable msa
4632                 disable mmi
4633             ;;
4634         esac
4635
4636         case $cpu in
4637             24kc)
4638                 disable mipsfpu
4639                 disable mipsdsp
4640                 disable mipsdspr2
4641             ;;
4642             24kf*)
4643                 disable mipsdsp
4644                 disable mipsdspr2
4645             ;;
4646             24kec|34kc|1004kc)
4647                 disable mipsfpu
4648                 disable mipsdspr2
4649             ;;
4650             24kef*|34kf*|1004kf*)
4651                 disable mipsdspr2
4652             ;;
4653             74kc)
4654                 disable mipsfpu
4655             ;;
4656             p5600)
4657                 enable mips32r5
4658                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4659             ;;
4660             i6400)
4661                 enable mips64r6
4662                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4663             ;;
4664             p6600)
4665                 enable mips64r6
4666                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4667             ;;
4668         esac
4669     else
4670         # We do not disable anything. Is up to the user to disable the unwanted features.
4671         warn 'generic cpu selected'
4672     fi
4673
4674 elif enabled ppc; then
4675
4676     disable ldbrx
4677
4678     case $(tolower $cpu) in
4679         601|ppc601|powerpc601)
4680             cpuflags="-mcpu=601"
4681             disable altivec
4682         ;;
4683         603*|ppc603*|powerpc603*)
4684             cpuflags="-mcpu=603"
4685             disable altivec
4686         ;;
4687         604*|ppc604*|powerpc604*)
4688             cpuflags="-mcpu=604"
4689             disable altivec
4690         ;;
4691         g3|75*|ppc75*|powerpc75*)
4692             cpuflags="-mcpu=750"
4693             disable altivec
4694         ;;
4695         g4|745*|ppc745*|powerpc745*)
4696             cpuflags="-mcpu=7450"
4697             disable vsx
4698         ;;
4699         74*|ppc74*|powerpc74*)
4700             cpuflags="-mcpu=7400"
4701             disable vsx
4702         ;;
4703         g5|970|ppc970|powerpc970)
4704             cpuflags="-mcpu=970"
4705             disable vsx
4706         ;;
4707         power[3-6]*)
4708             cpuflags="-mcpu=$cpu"
4709             disable vsx
4710         ;;
4711         power[7-8]*)
4712             cpuflags="-mcpu=$cpu"
4713         ;;
4714         cell)
4715             cpuflags="-mcpu=cell"
4716             enable ldbrx
4717             disable vsx
4718         ;;
4719         e500mc)
4720             cpuflags="-mcpu=e500mc"
4721             disable altivec
4722         ;;
4723         e500v2)
4724             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4725             disable altivec
4726             disable dcbzl
4727         ;;
4728         e500)
4729             cpuflags="-mcpu=8540 -mhard-float"
4730             disable altivec
4731             disable dcbzl
4732         ;;
4733     esac
4734
4735 elif enabled sparc; then
4736
4737     case $cpu in
4738         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4739             cpuflags="-mcpu=$cpu"
4740         ;;
4741         ultrasparc*|niagara[234])
4742             cpuflags="-mcpu=$cpu"
4743         ;;
4744     esac
4745
4746 elif enabled x86; then
4747
4748     case $cpu in
4749         i[345]86|pentium)
4750             cpuflags="-march=$cpu"
4751             disable i686
4752             disable mmx
4753         ;;
4754         # targets that do NOT support nopl and conditional mov (cmov)
4755         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4756             cpuflags="-march=$cpu"
4757             disable i686
4758         ;;
4759         # targets that do support nopl and conditional mov (cmov)
4760         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4761         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4762         |amdfam10|barcelona|b[dt]ver*|znver*)
4763             cpuflags="-march=$cpu"
4764             enable i686
4765             enable fast_cmov
4766         ;;
4767         # targets that do support conditional mov but on which it's slow
4768         pentium4|pentium4m|prescott|nocona)
4769             cpuflags="-march=$cpu"
4770             enable i686
4771             disable fast_cmov
4772         ;;
4773     esac
4774
4775 fi
4776
4777 if [ "$cpu" != generic ]; then
4778     add_cflags  $cpuflags
4779     add_asflags $cpuflags
4780     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4781 fi
4782
4783 # compiler sanity check
4784 check_exec <<EOF
4785 int main(void){ return 0; }
4786 EOF
4787 if test "$?" != 0; then
4788     echo "$cc is unable to create an executable file."
4789     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4790         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4791         echo "Only do this if you know what cross compiling means."
4792     fi
4793     die "C compiler test failed."
4794 fi
4795
4796 add_cppflags -D_ISOC99_SOURCE
4797 add_cxxflags -D__STDC_CONSTANT_MACROS
4798 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4799
4800 # some compilers silently accept -std=c11, so we also need to check that the
4801 # version macro is defined properly
4802 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4803     add_cflags -std=c11
4804 else
4805     check_cflags -std=c99
4806 fi
4807
4808 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4809 #include <stdlib.h>
4810 EOF
4811 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4812 #include <stdlib.h>
4813 EOF
4814
4815 add_host_cppflags -D_ISOC99_SOURCE
4816 check_host_cflags -std=c99
4817 check_host_cflags -Wall
4818 check_host_cflags $host_cflags_speed
4819
4820 check_64bit(){
4821     arch32=$1
4822     arch64=$2
4823     expr=$3
4824     check_code cc "" "int test[2*($expr) - 1]" &&
4825         subarch=$arch64 || subarch=$arch32
4826 }
4827
4828 case "$arch" in
4829     aarch64|alpha|ia64)
4830         spic=$shared
4831     ;;
4832     mips)
4833         check_64bit mips mips64 '_MIPS_SIM > 1'
4834         spic=$shared
4835     ;;
4836     parisc)
4837         check_64bit parisc parisc64 'sizeof(void *) > 4'
4838         spic=$shared
4839     ;;
4840     ppc)
4841         check_64bit ppc ppc64 'sizeof(void *) > 4'
4842         spic=$shared
4843     ;;
4844     s390)
4845         check_64bit s390 s390x 'sizeof(void *) > 4'
4846         spic=$shared
4847     ;;
4848     sparc)
4849         check_64bit sparc sparc64 'sizeof(void *) > 4'
4850         spic=$shared
4851     ;;
4852     x86)
4853         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4854         # Treat x32 as x64 for now. Note it also needs spic=$shared
4855         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4856             subarch=x86_64
4857         if test "$subarch" = "x86_64"; then
4858             spic=$shared
4859         fi
4860     ;;
4861     ppc)
4862         check_cc <<EOF && subarch="ppc64"
4863         int test[(int)sizeof(char*) - 7];
4864 EOF
4865     ;;
4866 esac
4867
4868 enable $subarch
4869 enabled spic && enable_weak pic
4870
4871 enabled x86_64 && objformat=elf64 || objformat="elf32"
4872
4873 # OS specific
4874 case $target_os in
4875     aix)
4876         SHFLAGS=-shared
4877         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4878         enabled shared && add_ldflags -Wl,-brtl
4879         ;;
4880     android)
4881         disable symver
4882         enable section_data_rel_ro
4883         SLIB_INSTALL_NAME='$(SLIBNAME)'
4884         SLIB_INSTALL_LINKS=
4885         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4886         ;;
4887     haiku)
4888         prefix_default="/boot/common"
4889         network_extralibs="-lnetwork"
4890         host_extralibs=
4891         ;;
4892     sunos)
4893         SHFLAGS='-shared -Wl,-h,$$(@F)'
4894         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4895         network_extralibs="-lsocket -lnsl"
4896         add_cppflags -D__EXTENSIONS__
4897         # When using suncc to build, the Solaris linker will mark
4898         # an executable with each instruction set encountered by
4899         # the Solaris assembler.  As our libraries contain their own
4900         # guards for processor-specific code, instead suppress
4901         # generation of the HWCAPS ELF section on Solaris x86 only.
4902         enabled_all suncc x86 &&
4903             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4904             add_ldflags -Wl,-M,mapfile
4905         nm_default='nm -P -g'
4906         version_script='-M'
4907         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4908         ;;
4909     netbsd)
4910         disable symver
4911         oss_indev_extralibs="-lossaudio"
4912         oss_outdev_extralibs="-lossaudio"
4913         enabled gcc || check_ldflags -Wl,-zmuldefs
4914         ;;
4915     openbsd|bitrig)
4916         disable symver
4917         SHFLAGS='-shared'
4918         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4919         SLIB_INSTALL_LINKS=
4920         oss_indev_extralibs="-lossaudio"
4921         oss_outdev_extralibs="-lossaudio"
4922         ;;
4923     dragonfly)
4924         disable symver
4925         ;;
4926     freebsd)
4927         ;;
4928     bsd/os)
4929         add_extralibs -lpoll -lgnugetopt
4930         strip="strip -d"
4931         ;;
4932     darwin)
4933         enabled ppc && add_asflags -force_cpusubtype_ALL
4934         install_name_dir_default='$(SHLIBDIR)'
4935         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4936         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4937         strip="${strip} -x"
4938         add_ldflags -Wl,-dynamic,-search_paths_first
4939         SLIBSUF=".dylib"
4940         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4941         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4942         objformat="macho"
4943         enabled x86_64 && objformat="macho64" || objformat="macho32"
4944         enabled_any pic shared x86_64 ||
4945             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4946         check_header dispatch/dispatch.h &&
4947             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4948         version_script='-exported_symbols_list'
4949         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4950         ;;
4951     msys*)
4952         die "Native MSYS builds are discouraged, please use the MINGW environment."
4953         ;;
4954     mingw32*|mingw64*)
4955         if test $target_os = "mingw32ce"; then
4956             disable network
4957         else
4958             target_os=mingw32
4959         fi
4960         LIBTARGET=i386
4961         if enabled x86_64; then
4962             LIBTARGET="i386:x86-64"
4963         elif enabled arm; then
4964             LIBTARGET=arm-wince
4965         fi
4966         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4967         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4968         shlibdir_default="$bindir_default"
4969         SLIBPREF=""
4970         SLIBSUF=".dll"
4971         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4972         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4973         dlltool="${cross_prefix}dlltool"
4974         if check_cmd lib.exe -list; then
4975             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4976             if enabled x86_64; then
4977                 LIBTARGET=x64
4978             fi
4979         elif check_cmd $dlltool --version; then
4980             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4981         fi
4982         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4983         SLIB_INSTALL_LINKS=
4984         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4985         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4986         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4987         enabled x86_64 && objformat="win64" || objformat="win32"
4988         ranlib=:
4989         enable dos_paths
4990         check_ldflags -Wl,--nxcompat,--dynamicbase
4991         # Lets work around some stupidity in binutils.
4992         # ld will strip relocations from executables even though we need them
4993         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4994         # however ld then forgets what the entry point should be (oops) so we
4995         # have to manually (re)set it.
4996         if enabled x86_32; then
4997             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4998         elif enabled x86_64; then
4999             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5000             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5001             # Set image base >4GB for extra entropy with HEASLR
5002             add_ldexeflags -Wl,--image-base,0x140000000
5003             append SHFLAGS -Wl,--image-base,0x180000000
5004         fi
5005         ;;
5006     win32|win64)
5007         disable symver
5008         if enabled shared; then
5009             # Link to the import library instead of the normal static library
5010             # for shared libs.
5011             LD_LIB='%.lib'
5012             # Cannot build both shared and static libs with MSVC or icl.
5013             disable static
5014         fi
5015         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5016         shlibdir_default="$bindir_default"
5017         SLIBPREF=""
5018         SLIBSUF=".dll"
5019         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5020         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5021         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5022         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5023         SLIB_INSTALL_LINKS=
5024         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5025         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5026         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5027         enabled x86_64 && objformat="win64" || objformat="win32"
5028         ranlib=:
5029         enable dos_paths
5030         ;;
5031     cygwin*)
5032         target_os=cygwin
5033         shlibdir_default="$bindir_default"
5034         SLIBPREF="cyg"
5035         SLIBSUF=".dll"
5036         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5037         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5038         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5039         SLIB_INSTALL_LINKS=
5040         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5041         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5042         enabled x86_64 && objformat="win64" || objformat="win32"
5043         enable dos_paths
5044         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5045         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5046         ;;
5047     *-dos|freedos|opendos)
5048         network_extralibs="-lsocket"
5049         objformat="coff"
5050         enable dos_paths
5051         add_cppflags -U__STRICT_ANSI__
5052         ;;
5053     linux)
5054         enable dv1394
5055         enable section_data_rel_ro
5056         enabled_any arm aarch64 && enable_weak linux_perf
5057         ;;
5058     irix*)
5059         target_os=irix
5060         ranlib="echo ignoring ranlib"
5061         ;;
5062     os/2*)
5063         strip="lxlite -CS"
5064         objformat="aout"
5065         add_cppflags -D_GNU_SOURCE
5066         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5067         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5068         LIBSUF="_s.a"
5069         SLIBPREF=""
5070         SLIBSUF=".dll"
5071         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5072         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5073         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5074             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5075             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5076             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5077             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5078         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5079             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5080         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5081         SLIB_INSTALL_LINKS=
5082         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5083         enable dos_paths
5084         enable_weak os2threads
5085         ;;
5086     gnu/kfreebsd)
5087         add_cppflags -D_BSD_SOURCE
5088         ;;
5089     gnu)
5090         ;;
5091     qnx)
5092         add_cppflags -D_QNX_SOURCE
5093         network_extralibs="-lsocket"
5094         ;;
5095     symbian)
5096         SLIBSUF=".dll"
5097         enable dos_paths
5098         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5099         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5100         add_ldflags -Wl,--target1-abs,--no-undefined \
5101                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5102                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5103         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5104                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5105                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5106         ;;
5107     osf1)
5108         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
5109         ;;
5110     minix)
5111         ;;
5112     none)
5113         ;;
5114     *)
5115         die "Unknown OS '$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_${pfx}cppflags -D__printf__=__gnu_printf__
5165     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5166          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5167         eval ${pfx}libc_type=mingw32
5168         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5169             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5170             die "ERROR: MinGW32 runtime version must be >= 3.15."
5171         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5172         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5173             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5174         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5175             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5176         eval test \$${pfx_no_}cc_type = "gcc" &&
5177             add_${pfx}cppflags -D__printf__=__gnu_printf__
5178     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5179         eval ${pfx}libc_type=msvcrt
5180         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5181             if [ "$pfx" = host_ ]; then
5182                 add_host_cppflags -Dsnprintf=_snprintf
5183             else
5184                 add_compat strtod.o strtod=avpriv_strtod
5185                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5186                                              _snprintf=avpriv_snprintf  \
5187                                              vsnprintf=avpriv_vsnprintf
5188             fi
5189         fi
5190         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5191         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5192         # 0x601 by default unless something else is set by the user.
5193         # This can easily lead to us detecting functions only present
5194         # in such new versions and producing binaries requiring windows 7.0.
5195         # Therefore explicitly set the default to XP unless the user has
5196         # set something else on the command line.
5197         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5198         # family. For these cases, configure is free to use any functions
5199         # found in the SDK headers by default. (Alternatively, we could force
5200         # _WIN32_WINNT to 0x0602 in that case.)
5201         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5202             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5203 #ifdef WINAPI_FAMILY
5204 #include <winapifamily.h>
5205 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5206 #error not desktop
5207 #endif
5208 #endif
5209 EOF
5210         if [ "$pfx" = "" ]; then
5211             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5212             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5213         fi
5214     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5215         eval ${pfx}libc_type=klibc
5216     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5217         eval ${pfx}libc_type=bionic
5218     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5219         eval ${pfx}libc_type=solaris
5220         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5221     fi
5222     check_${pfx}cc <<EOF
5223 #include <time.h>
5224 void *v = localtime_r;
5225 EOF
5226 test "$?" != 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
5227 #include <time.h>
5228 void *v = localtime_r;
5229 EOF
5230
5231 }
5232
5233 probe_libc
5234 test -n "$libc_type" && enable libc_$libc_type
5235 probe_libc host_
5236 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5237
5238 case $libc_type in
5239     bionic)
5240         add_compat strtod.o strtod=avpriv_strtod
5241         ;;
5242 esac
5243
5244 # hacks for compiler/libc/os combinations
5245
5246 if enabled_all tms470 libc_glibc; then
5247     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5248     add_cppflags -D__USER_LABEL_PREFIX__=
5249     add_cppflags -D__builtin_memset=memset
5250     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5251     add_cflags   -pds=48    # incompatible redefinition of macro
5252 fi
5253
5254 if enabled_all ccc libc_glibc; then
5255     add_ldflags -Wl,-z,now  # calls to libots crash without this
5256 fi
5257
5258 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5259     add_cppflags '-I\$(SRC_PATH)/compat/float'
5260
5261 esc(){
5262     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5263 }
5264
5265 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
5266
5267 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5268
5269 set_default libdir
5270 : ${shlibdir_default:="$libdir"}
5271 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5272
5273 set_default $PATHS_LIST
5274 set_default nm
5275
5276 # we need to build at least one lib type
5277 if ! enabled_any static shared; then
5278     cat <<EOF
5279 At least one library type must be built.
5280 Specify --enable-static to build the static libraries or --enable-shared to
5281 build the shared libraries as well. To only build the shared libraries specify
5282 --disable-static in addition to --enable-shared.
5283 EOF
5284     exit 1
5285 fi
5286
5287 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5288
5289 enable_weak_pic() {
5290     disabled pic && return
5291     enable pic
5292     add_cppflags -DPIC
5293     case "$target_os" in
5294     mingw*|cygwin*)
5295         ;;
5296     *)
5297         add_cflags -fPIC
5298         ;;
5299     esac
5300     add_asflags  -fPIC
5301 }
5302
5303 enabled pic && enable_weak_pic
5304
5305 check_cc <<EOF || die "Symbol mangling check failed."
5306 int ff_extern;
5307 EOF
5308 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5309 extern_prefix=${sym%%ff_extern*}
5310
5311 check_cc <<EOF && enable_weak inline_asm
5312 void foo(void) { __asm__ volatile ("" ::); }
5313 EOF
5314
5315 _restrict=
5316 for restrict_keyword in restrict __restrict__ __restrict; do
5317     check_cc <<EOF && _restrict=$restrict_keyword && break
5318 void foo(char * $restrict_keyword p);
5319 EOF
5320 done
5321
5322 check_cc <<EOF && enable pragma_deprecated
5323 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5324 EOF
5325
5326 check_cc <<EOF && enable attribute_packed
5327 struct { int x; } __attribute__((packed)) x;
5328 EOF
5329
5330 check_cc <<EOF && enable attribute_may_alias
5331 union { int x; } __attribute__((may_alias)) x;
5332 EOF
5333
5334 check_cc <<EOF || die "endian test failed"
5335 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5336 EOF
5337 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5338
5339 check_cc <<EOF && enable const_nan
5340 #include <math.h>
5341 void foo(void) { struct { double d; } static const bar[] = { { NAN } }; }
5342 EOF
5343
5344 if ! enabled ppc64 || enabled bigendian; then
5345     disable vsx
5346 fi
5347
5348 check_gas() {
5349     log "check_gas using '$as' as AS"
5350     # :vararg is used on aarch64, arm and ppc altivec
5351     check_as <<EOF || return 1
5352 .macro m n, y:vararg=0
5353 \n: .int \y
5354 .endm
5355 m x
5356 EOF
5357     # .altmacro is only used in arm asm
5358     ! enabled arm || check_as <<EOF || return 1
5359 .altmacro
5360 EOF
5361     enable gnu_as
5362     return 0
5363 }
5364
5365 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5366     nogas=:
5367     enabled_any arm aarch64 && nogas=die
5368     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5369     as_noop=-v
5370
5371     case $as_type in
5372         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5373         gcc)  gaspp_as_type=gas ;;
5374         *)    gaspp_as_type=$as_type ;;
5375     esac
5376
5377     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5378
5379     test "${as#*gas-preprocessor.pl}" != "$as" ||
5380     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5381         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5382
5383     if ! check_gas ; then
5384         as=${gas:=$as}
5385         check_gas || \
5386             $nogas "GNU assembler not found, install/update gas-preprocessor"
5387     fi
5388
5389     check_as <<EOF && enable as_func
5390 .func test
5391 .endfunc
5392 EOF
5393 fi
5394
5395 check_inline_asm inline_asm_labels '"1:\n"'
5396
5397 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5398
5399 if enabled aarch64; then
5400     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5401     # internal assembler in clang 3.3 does not support this instruction
5402     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5403     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5404
5405     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5406
5407 elif enabled alpha; then
5408
5409     check_cflags -mieee
5410
5411 elif enabled arm; then
5412
5413     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5414
5415     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5416 float func(float a, float b){ return a+b; }
5417 EOF
5418
5419     enabled thumb && check_cflags -mthumb || check_cflags -marm
5420
5421     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5422         enable vfp_args
5423     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5424         enable vfp_args
5425     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5426         case "${cross_prefix:-$cc}" in
5427             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5428             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5429 __asm__ (".eabi_attribute 28, 1");
5430 int main(void) { return 0; }
5431 EOF
5432         esac
5433         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5434     fi
5435
5436     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5437     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5438     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5439     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5440     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5441     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5442     enabled setend  && check_insn setend  'setend be'
5443
5444     [ $target_os = linux ] || [ $target_os = android ] ||
5445         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5446             $ARCH_EXT_LIST_ARM
5447
5448     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5449
5450     check_as <<EOF && enable as_dn_directive
5451 ra .dn d0.i16
5452 .unreq ra
5453 EOF
5454     check_as <<EOF && enable as_fpu_directive
5455 .fpu neon
5456 EOF
5457
5458     # llvm's integrated assembler supports .object_arch from llvm 3.5
5459     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5460         check_as <<EOF && enable as_object_arch
5461 .object_arch armv4
5462 EOF
5463
5464     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5465
5466 elif enabled mips; then
5467
5468     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5469     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5470     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5471
5472     # Enable minimum ISA based on selected options
5473     if enabled mips64; then
5474         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5475         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5476         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5477     else
5478         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5479         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5480         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5481         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5482     fi
5483
5484     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5485     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5486     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5487     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5488     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5489
5490     if enabled bigendian && enabled msa; then
5491         disable msa
5492     fi
5493
5494 elif enabled parisc; then
5495
5496     if enabled gcc; then
5497         case $($cc -dumpversion) in
5498             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5499         esac
5500     fi
5501
5502 elif enabled ppc; then
5503
5504     enable local_aligned_8 local_aligned_16 local_aligned_32
5505
5506     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5507     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5508     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5509     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5510
5511     # AltiVec flags: The FSF version of GCC differs from the Apple version
5512     if enabled altivec; then
5513         check_cflags -maltivec -mabi=altivec &&
5514         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5515         check_cflags -faltivec
5516
5517         # check if our compiler supports Motorola AltiVec C API
5518         check_cc <<EOF || disable altivec
5519 $inc_altivec_h
5520 int main(void) {
5521     vector signed int v1 = (vector signed int) { 0 };
5522     vector signed int v2 = (vector signed int) { 1 };
5523     v1 = vec_add(v1, v2);
5524     return 0;
5525 }
5526 EOF
5527
5528         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5529     fi
5530
5531     if enabled vsx; then
5532         check_cflags -mvsx &&
5533         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5534     fi
5535
5536     if enabled power8; then
5537         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5538     fi
5539
5540 elif enabled x86; then
5541
5542     check_builtin rdtsc    intrin.h   "__rdtsc()"
5543     check_builtin mm_empty mmintrin.h "_mm_empty()"
5544
5545     enable local_aligned_8 local_aligned_16 local_aligned_32
5546
5547     # check whether EBP is available on x86
5548     # As 'i' is stored on the stack, this program will crash
5549     # if the base pointer is used to access it because the
5550     # base pointer is cleared in the inline assembly code.
5551     check_exec_crash <<EOF && enable ebp_available
5552 volatile int i=0;
5553 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5554 return i;
5555 EOF
5556
5557     # check whether EBX is available on x86
5558     check_inline_asm ebx_available '""::"b"(0)' &&
5559         check_inline_asm ebx_available '"":::"%ebx"'
5560
5561     # check whether xmm clobbers are supported
5562     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5563
5564     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5565         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5566
5567     # check whether binutils is new enough to compile SSSE3/MMXEXT
5568     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5569     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5570
5571     probe_x86asm(){
5572         x86asmexe_probe=$1
5573         if check_cmd $x86asmexe_probe -v; then
5574             x86asmexe=$x86asmexe_probe
5575             x86asm_type=nasm
5576             x86asm_debug="-g -F dwarf"
5577         elif check_cmd $x86asmexe_probe --version; then
5578             x86asmexe=$x86asmexe_probe
5579             x86asm_type=yasm
5580             x86asm_debug="-g dwarf2"
5581         fi
5582         check_x86asm "movbe ecx, [5]" && enable x86asm
5583     }
5584
5585     if ! disabled_any asm mmx x86asm; then
5586         disable x86asm
5587         for program in $x86asmexe nasm yasm; do
5588             probe_x86asm $program && break
5589         done
5590         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5591         test $x86asm_type = 'nasm' && X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5592         test $x86asm_type = 'yasm' && X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5593         X86ASMFLAGS="-f $objformat"
5594         enabled pic               && append X86ASMFLAGS "-DPIC"
5595         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5596         case "$objformat" in
5597             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5598         esac
5599
5600         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5601         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5602         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5603         check_x86asm "CPU amdnop" || disable cpunop
5604     fi
5605
5606     case "$cpu" in
5607         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5608             disable fast_clz
5609         ;;
5610     esac
5611
5612 fi
5613
5614 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5615
5616 check_ldflags -Wl,--as-needed
5617 check_ldflags -Wl,-z,noexecstack
5618
5619 if check_func dlopen && check_func dlsym; then
5620     ldl=
5621 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5622     ldl=-ldl
5623 fi
5624
5625 avisynth_demuxer_extralibs='$ldl'
5626 cuda_extralibs='$ldl'
5627 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5628 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5629 libndi_newtek_outdev_extralibs="$libndi_newtek_outdev_extralibs $ldl"
5630 libndi_newtek_indev_extralibs="$libndi_newtek_indev_extralibs $ldl"
5631 frei0r_filter_extralibs='$ldl'
5632 frei0r_src_filter_extralibs='$ldl'
5633 ladspa_filter_extralibs='$ldl'
5634 nvenc_extralibs='$ldl'
5635
5636 if ! disabled network; then
5637     check_func getaddrinfo $network_extralibs
5638     check_func inet_aton $network_extralibs
5639
5640     check_type netdb.h "struct addrinfo"
5641     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5642     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5643     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5644     check_type poll.h "struct pollfd"
5645     check_type netinet/sctp.h "struct sctp_event_subscribe"
5646     check_struct "sys/socket.h" "struct msghdr" msg_flags
5647     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5648     check_type netinet/in.h "struct sockaddr_in6"
5649     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5650     check_type "sys/types.h sys/socket.h" socklen_t
5651
5652     # Prefer arpa/inet.h over winsock2
5653     if check_header arpa/inet.h ; then
5654         check_func closesocket
5655     elif check_header winsock2.h ; then
5656         check_func_headers winsock2.h closesocket -lws2 &&
5657             network_extralibs="-lws2" ||
5658         { check_func_headers winsock2.h closesocket -lws2_32 &&
5659             network_extralibs="-lws2_32"; } || disable winsock2_h network
5660         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5661
5662         check_type ws2tcpip.h socklen_t
5663         check_type ws2tcpip.h "struct addrinfo"
5664         check_type ws2tcpip.h "struct group_source_req"
5665         check_type ws2tcpip.h "struct ip_mreq_source"
5666         check_type ws2tcpip.h "struct ipv6_mreq"
5667         check_type winsock2.h "struct pollfd"
5668         check_struct winsock2.h "struct sockaddr" sa_len
5669         check_type ws2tcpip.h "struct sockaddr_in6"
5670         check_type ws2tcpip.h "struct sockaddr_storage"
5671     else
5672         disable network
5673     fi
5674 fi
5675
5676 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5677 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5678 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5679 check_builtin sarestart signal.h "SA_RESTART"
5680 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5681 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5682 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5683 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5684 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5685
5686 case "$custom_allocator" in
5687     jemalloc)
5688         # jemalloc by default does not use a prefix
5689         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5690     ;;
5691     tcmalloc)
5692         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5693         malloc_prefix=tc_
5694     ;;
5695 esac
5696
5697 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5698 check_func  ${malloc_prefix}memalign            && enable memalign
5699 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5700
5701 check_func  access
5702 check_func_headers stdlib.h arc4random
5703 check_func_headers time.h clock_gettime ||
5704     { check_lib clock_gettime time.h clock_gettime -lrt && LIBRT="-lrt"; }
5705 check_func  fcntl
5706 check_func  fork
5707 check_func  gethrtime
5708 check_func  getopt
5709 check_func  getrusage
5710 check_func  gettimeofday
5711 check_func  isatty
5712 check_func  mach_absolute_time
5713 check_func  mkstemp
5714 check_func  mmap
5715 check_func  mprotect
5716 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5717 check_func_headers time.h nanosleep ||
5718     { check_lib nanosleep time.h nanosleep -lrt && LIBRT="-lrt"; }
5719 check_func  sched_getaffinity
5720 check_func  setrlimit
5721 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5722 check_func  strerror_r
5723 check_func  sysconf
5724 check_func  sysctl
5725 check_func  usleep
5726
5727 check_func_headers conio.h kbhit
5728 check_func_headers io.h setmode
5729 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5730 check_func_headers stdlib.h getenv
5731 check_func_headers sys/stat.h lstat
5732
5733 check_func_headers windows.h GetProcessAffinityMask
5734 check_func_headers windows.h GetProcessTimes
5735 check_func_headers windows.h GetSystemTimeAsFileTime
5736 check_func_headers windows.h LoadLibrary
5737 check_func_headers windows.h MapViewOfFile
5738 check_func_headers windows.h PeekNamedPipe
5739 check_func_headers windows.h SetConsoleTextAttribute
5740 check_func_headers windows.h SetConsoleCtrlHandler
5741 check_func_headers windows.h Sleep
5742 check_func_headers windows.h VirtualAlloc
5743 check_struct windows.h "CONDITION_VARIABLE" Ptr
5744 check_func_headers glob.h glob
5745 enabled xlib &&
5746     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5747
5748 check_header d3d11.h
5749 check_header direct.h
5750 check_header dirent.h
5751 check_header dlfcn.h
5752 check_header dxgidebug.h
5753 check_header dxva.h
5754 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5755 check_header io.h
5756 check_header libcrystalhd/libcrystalhd_if.h
5757 check_header mach/mach_time.h
5758 check_header malloc.h
5759 check_header net/udplite.h
5760 check_header poll.h
5761 check_header sys/mman.h
5762 check_header sys/param.h
5763 check_header sys/resource.h
5764 check_header sys/select.h
5765 check_header sys/time.h
5766 check_header sys/un.h
5767 check_header termios.h
5768 check_header unistd.h
5769 check_header valgrind/valgrind.h
5770 check_header VideoDecodeAcceleration/VDADecoder.h
5771 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5772 check_header windows.h
5773 check_header X11/extensions/XvMClib.h
5774 check_header asm/types.h
5775
5776 # it seems there are versions of clang in some distros that try to use the
5777 # gcc headers, which explodes for stdatomic
5778 # so we also check that atomics actually work here
5779 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5780
5781 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5782 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5783 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5784 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5785
5786 enabled appkit       && check_apple_framework AppKit
5787 enabled audiotoolbox && check_apple_framework AudioToolbox
5788 enabled avfoundation && check_apple_framework AVFoundation
5789 enabled coreimage    && check_apple_framework CoreImage
5790 enabled videotoolbox && check_apple_framework VideoToolbox
5791
5792 enabled avfoundation && {
5793     check_lib avfoundation CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5794     check_lib avfoundation ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5795
5796 enabled videotoolbox &&
5797     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5798
5799 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5800
5801 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5802 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5803 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5804 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5805 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5806
5807 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5808 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5809 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5810 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5811 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5812 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5813 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5814 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5815 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5816
5817 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5818
5819 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5820
5821 if ! disabled w32threads && ! enabled pthreads; then
5822     check_func_headers "windows.h process.h" _beginthreadex &&
5823         enable w32threads || disable w32threads
5824     if ! enabled w32threads && enabled winrt; then
5825         check_func_headers "windows.h" CreateThread &&
5826             enable w32threads || disable w32threads
5827     fi
5828 fi
5829
5830 # check for some common methods of building with pthread support
5831 # do this before the optional library checks as some of them require pthreads
5832 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5833     if check_lib pthreads pthread.h pthread_join   -pthread &&
5834        check_lib pthreads pthread.h pthread_create -pthread; then
5835         add_cflags -pthread
5836     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5837          check_lib pthreads pthread.h pthread_create -pthreads; then
5838         add_cflags -pthreads
5839     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5840          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5841         add_cflags -ldl -pthread
5842     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5843          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5844         :
5845     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5846          check_lib pthreads pthread.h pthread_create -lpthread; then
5847         :
5848     elif check_func pthread_join && check_func pthread_create; then
5849         enable pthreads
5850     fi
5851     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5852 fi
5853
5854
5855 if enabled pthreads; then
5856   check_func pthread_cancel
5857 fi
5858
5859 enabled pthreads &&
5860     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5861
5862 enabled  zlib && check_lib zlib   zlib.h      zlibVersion    -lz
5863 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5864 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5865
5866 check_lib libm math.h sin -lm && LIBM="-lm"
5867
5868 atan2f_args=2
5869 copysign_args=2
5870 hypot_args=2
5871 ldexpf_args=2
5872 powf_args=2
5873
5874 for func in $MATH_FUNCS; do
5875     eval check_mathfunc $func \${${func}_args:-1} $LIBM
5876 done
5877
5878 for func in $COMPLEX_FUNCS; do
5879     eval check_complexfunc $func \${${func}_args:-1}
5880 done
5881
5882 # these are off by default, so fail if requested and not available
5883 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5884 enabled cuvid             && { enabled cuda ||
5885                                die "ERROR: CUVID requires CUDA"; }
5886 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5887 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5888                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5889 enabled libndi_newtek     && { check_header Processing.NDI.Lib.h || die "ERROR: Processing.NDI.Lib.h header not found"; }
5890 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5891 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5892 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5893 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5894 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5895 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5896 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5897 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5898 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5899 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5900                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5901                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5902 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5903 enabled libdc1394         && require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new
5904 enabled libdrm            && require_pkg_config libdrm xf86drm.h drmGetVersion
5905 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5906                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5907                                  warn "using libfdk without pkg-config"; } }
5908 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"
5909 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5910 enabled fontconfig        && enable libfontconfig
5911 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5912 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5913 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5914 enabled libgme            && { use_pkg_config libgme gme/gme.h gme_new_emu ||
5915                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
5916 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5917                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5918                                done || die "ERROR: libgsm not found"; }
5919 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5920 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5921 # While it may appear that require is being used as a pkg-config
5922 # fallback for libmfx, it is actually being used to detect a different
5923 # installation route altogether.  If libmfx is installed via the Intel
5924 # Media SDK or Intel Media Server Studio, these don't come with
5925 # pkg-config support.  Instead, users should make sure that the build
5926 # can find the libraries and headers through other means.
5927 enabled libmfx            && { use_pkg_config libmfx "mfx/mfxvideo.h" MFXInit ||
5928                                { require libmfx "mfx/mfxvideo.h" MFXInit -llibmfx && warn "using libmfx without pkg-config"; } }
5929 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5930 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5931 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa
5932 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
5933                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
5934                                die "ERROR: libnpp not found"; }
5935 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5936 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5937 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5938                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5939                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5940                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5941 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5942 enabled libopenjpeg       && { { check_lib libopenjpeg openjpeg-2.2/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5943                                check_lib libopenjpeg openjpeg-2.2/openjpeg.h opj_version -lopenjp2 ||
5944                                { check_lib libopenjpeg openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5945                                check_lib libopenjpeg openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5946                                { check_lib libopenjpeg openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5947                                { check_lib libopenjpeg openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5948                                { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5949                                die "ERROR: libopenjpeg not found"; }
5950 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5951 enabled libopus           && {
5952     enabled libopus_decoder && {
5953         require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5954     }
5955     enabled libopus_encoder && {
5956         require_pkg_config opus opus_multistream.h opus_multistream_surround_encoder_create
5957     }
5958 }
5959 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5960 enabled librsvg           && require_pkg_config librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
5961 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5962 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5963 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5964 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5965                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5966 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
5967 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5968 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5969 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5970 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5971 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5972 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5973                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5974                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5975 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5976 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5977 enabled libvmaf           && require_pkg_config libvmaf libvmaf.h compute_vmaf
5978 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5979 enabled libvorbis         && require_pkg_config vorbis vorbis/codec.h vorbis_info_init &&
5980                              require_pkg_config vorbisenc vorbis/vorbisenc.h vorbis_encode_init
5981
5982 enabled libvpx            && {
5983     enabled libvpx_vp8_decoder && {
5984         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5985             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5986                 die "ERROR: libvpx decoder version must be >=0.9.1";
5987     }
5988     enabled libvpx_vp8_encoder && {
5989         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5990             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5991                 die "ERROR: libvpx encoder version must be >=0.9.7";
5992     }
5993     enabled libvpx_vp9_decoder && {
5994         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5995             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx
5996     }
5997     enabled libvpx_vp9_encoder && {
5998         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5999             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx
6000     }
6001     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6002         die "libvpx enabled but no supported decoders found"
6003     fi
6004 }
6005
6006 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6007 enabled libwebp           && {
6008     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6009     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
6010 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
6011                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
6012                                  warn "using libx264 without pkg-config"; } } &&
6013                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
6014                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
6015                              { check_cpp_condition x264.h "X264_MPEG2" &&
6016                                enable libx262; }
6017 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
6018                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
6019                                die "ERROR: libx265 version must be >= 68."; }
6020 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
6021 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6022 enabled libzimg           && require_pkg_config "zimg >= 2.3.0" zimg.h zimg_get_api_version
6023 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
6024 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
6025                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6026                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6027 enabled libxml2           && require_pkg_config libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6028 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6029 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6030                                { ! enabled cross_compile &&
6031                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6032                                  add_ldflags -L/opt/vc/lib/ &&
6033                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6034                                die "ERROR: mmal not found" &&
6035                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6036 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6037                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6038                                die "ERROR: openal not found"; } &&
6039                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6040                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6041 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6042                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6043                                die "ERROR: opencl not found"; } &&
6044                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6045                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6046                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6047 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6048                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6049                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6050                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6051                                die "ERROR: opengl not found."
6052                              }
6053 enabled omx_rpi           && { check_header OMX_Core.h ||
6054                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
6055                                die "ERROR: OpenMAX IL headers not found"; }
6056 enabled omx               && { check_header OMX_Core.h || die "ERROR: OpenMAX IL headers not found"; }
6057 enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
6058                                use_pkg_config openssl openssl/ssl.h SSL_library_init ||
6059                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6060                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6061                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6062                                die "ERROR: openssl not found"; }
6063
6064 if enabled gcrypt; then
6065     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6066     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6067         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6068         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6069         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6070             die "ERROR: gcrypt not found"
6071         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_extralibs
6072     else
6073         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6074     fi
6075 fi
6076
6077 if enabled sdl2; then
6078     SDL2_CONFIG="${cross_prefix}sdl2-config"
6079     if check_pkg_config sdl2 SDL_events.h SDL_PollEvent; then
6080         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6081         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6082         check_func SDL_Init $sdl2_extralibs $sdl2_cflags ||
6083             disable sdl2
6084     elif "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6085         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6086         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6087         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6088         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6089         check_func SDL_Init $sdl2_extralibs $sdl2_cflags ||
6090             disable sdl2
6091     else
6092         disable sdl2
6093     fi
6094     if test $target_os = "mingw32"; then
6095         sdl2_extralibs="$sdl2_extralibs -mconsole"
6096     fi
6097 fi
6098 enabled sdl2 && add_cflags $sdl2_cflags && add_extralibs $sdl2_extralibs
6099
6100 if enabled decklink; then
6101     case $target_os in
6102         mingw32*|mingw64*|win32|win64)
6103             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6104             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6105             ;;
6106     esac
6107 fi
6108
6109 enabled securetransport &&
6110     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6111     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6112         disable securetransport
6113
6114 enabled schannel &&
6115     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6116     check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6117     add_extralibs -lsecur32 ||
6118         disable schannel
6119
6120 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6121 enabled makeinfo \
6122     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6123     && enable makeinfo_html || disable makeinfo_html
6124 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6125 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6126 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6127 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6128
6129 # check V4L2 codecs available in the API
6130 check_header linux/fb.h
6131 check_header linux/videodev2.h
6132 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
6133 check_code cc linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;" || disable v4l2_m2m
6134 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;" && enable vc1_v4l2_m2m
6135 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;" && enable mpeg1_v4l2_m2m
6136 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;" && enable mpeg2_v4l2_m2m
6137 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;" && enable mpeg4_v4l2_m2m
6138 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;" && enable hevc_v4l2_m2m
6139 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H263;" && enable h263_v4l2_m2m
6140 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H264;" && enable h264_v4l2_m2m
6141 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;" && enable vp8_v4l2_m2m
6142 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;" && enable vp9_v4l2_m2m
6143
6144 check_header sys/videoio.h
6145 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
6146
6147 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6148 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6149 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6150 # w32api 3.12 had it defined wrong
6151 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6152
6153 check_type "dshow.h" IBaseFilter
6154
6155 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6156 { check_header dev/bktr/ioctl_meteor.h &&
6157   check_header dev/bktr/ioctl_bt848.h; } ||
6158 { check_header machine/ioctl_meteor.h &&
6159   check_header machine/ioctl_bt848.h; } ||
6160 { check_header dev/video/meteor/ioctl_meteor.h &&
6161   check_header dev/video/bktr/ioctl_bt848.h; } ||
6162 check_header dev/ic/bt8xx.h
6163
6164 if check_struct sys/soundcard.h audio_buf_info bytes; then
6165     enable_safe sys/soundcard.h
6166 else
6167     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
6168     #include <sys/soundcard.h>
6169     audio_buf_info abc;
6170 EOF
6171 fi
6172 check_header soundcard.h
6173
6174 enabled alsa && check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6175
6176 enabled jack && check_lib jack jack/jack.h jack_client_open -ljack &&
6177     check_func jack_port_get_latency_range -ljack
6178
6179 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6180
6181 if enabled libcdio; then
6182     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6183     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6184     die "ERROR: No usable libcdio/cdparanoia found"
6185 fi
6186
6187 enabled libxcb && check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || disable libxcb
6188
6189 if enabled libxcb; then
6190
6191     enabled libxcb_shm    && check_pkg_config xcb-shm    xcb/shm.h    xcb_shm_attach              || disable libxcb_shm
6192     enabled libxcb_shape  && check_pkg_config xcb-shape  xcb/shape.h  xcb_shape_get_rectangles    || disable libxcb_shape
6193     enabled libxcb_xfixes && check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || disable libxcb_xfixes
6194
6195     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
6196     add_extralibs $xcb_extralibs $xcb_shm_extralibs $xcb_xfixes_extralibs $xcb_shape_extralibs
6197 fi
6198
6199 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6200
6201 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6202 # the desktop api partition
6203 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6204 #ifdef WINAPI_FAMILY
6205 #include <winapifamily.h>
6206 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6207 #error desktop, not uwp
6208 #else
6209 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6210 #endif
6211 #else
6212 #error no family set
6213 #endif
6214 EOF
6215
6216 enabled vaapi &&
6217     check_lib vaapi va/va.h vaInitialize -lva
6218
6219 enabled vaapi &&
6220     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6221     disable vaapi
6222
6223 enabled vaapi &&
6224     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6225
6226 enabled vaapi &&
6227     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6228
6229 enabled vdpau &&
6230     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6231     disable vdpau
6232
6233 enabled vdpau &&
6234     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6235
6236 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6237
6238 if enabled x86; then
6239     case $target_os in
6240         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6241             ;;
6242         *)
6243             disable cuda cuvid nvenc
6244             ;;
6245     esac
6246 else
6247     disable cuda cuvid nvenc
6248 fi
6249
6250 enabled nvenc &&
6251     check_cc -I$source_path <<EOF || disable nvenc
6252 #include "compat/nvenc/nvEncodeAPI.h"
6253 NV_ENCODE_API_FUNCTION_LIST flist;
6254 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6255 int main(void) { return 0; }
6256 EOF
6257
6258 # Funny iconv installations are not unusual, so check it after all flags have been set
6259 if enabled libc_iconv; then
6260     check_func_headers iconv.h iconv
6261 elif enabled iconv; then
6262     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6263 fi
6264
6265 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6266
6267 # add some useful compiler flags if supported
6268 check_cflags -Wdeclaration-after-statement
6269 check_cflags -Wall
6270 check_cflags -Wdisabled-optimization
6271 check_cflags -Wpointer-arith
6272 check_cflags -Wredundant-decls
6273 check_cflags -Wwrite-strings
6274 check_cflags -Wtype-limits
6275 check_cflags -Wundef
6276 check_cflags -Wmissing-prototypes
6277 check_cflags -Wno-pointer-to-int-cast
6278 check_cflags -Wstrict-prototypes
6279 check_cflags -Wempty-body
6280
6281 if enabled extra_warnings; then
6282     check_cflags -Wcast-qual
6283     check_cflags -Wextra
6284     check_cflags -Wpedantic
6285 fi
6286
6287 check_disable_warning(){
6288     warning_flag=-W${1#-Wno-}
6289     test_cflags $warning_flag && add_cflags $1
6290 }
6291
6292 check_disable_warning -Wno-parentheses
6293 check_disable_warning -Wno-switch
6294 check_disable_warning -Wno-format-zero-length
6295 check_disable_warning -Wno-pointer-sign
6296 check_disable_warning -Wno-unused-const-variable
6297
6298 check_disable_warning_headers(){
6299     warning_flag=-W${1#-Wno-}
6300     test_cflags $warning_flag && add_cflags_headers $1
6301 }
6302
6303 check_disable_warning_headers -Wno-deprecated-declarations
6304 check_disable_warning_headers -Wno-unused-variable
6305
6306 check_cc <<EOF && enable blocks_extension
6307 void (^block)(void);
6308 EOF
6309
6310 # add some linker flags
6311 check_ldflags -Wl,--warn-common
6312 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6313 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6314 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6315 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6316
6317 # add some strip flags
6318 check_stripflags -x
6319
6320 enabled neon_clobber_test &&
6321     check_ldflags -Wl,--wrap,avcodec_open2              \
6322                   -Wl,--wrap,avcodec_decode_audio4      \
6323                   -Wl,--wrap,avcodec_decode_video2      \
6324                   -Wl,--wrap,avcodec_decode_subtitle2   \
6325                   -Wl,--wrap,avcodec_encode_audio2      \
6326                   -Wl,--wrap,avcodec_encode_video2      \
6327                   -Wl,--wrap,avcodec_encode_subtitle    \
6328                   -Wl,--wrap,avcodec_send_packet        \
6329                   -Wl,--wrap,avcodec_receive_packet     \
6330                   -Wl,--wrap,avcodec_send_frame         \
6331                   -Wl,--wrap,avcodec_receive_frame      \
6332                   -Wl,--wrap,swr_convert                \
6333                   -Wl,--wrap,avresample_convert ||
6334     disable neon_clobber_test
6335
6336 enabled xmm_clobber_test &&
6337     check_ldflags -Wl,--wrap,avcodec_open2              \
6338                   -Wl,--wrap,avcodec_decode_audio4      \
6339                   -Wl,--wrap,avcodec_decode_video2      \
6340                   -Wl,--wrap,avcodec_decode_subtitle2   \
6341                   -Wl,--wrap,avcodec_encode_audio2      \
6342                   -Wl,--wrap,avcodec_encode_video2      \
6343                   -Wl,--wrap,avcodec_encode_subtitle    \
6344                   -Wl,--wrap,avcodec_send_packet        \
6345                   -Wl,--wrap,avcodec_receive_packet     \
6346                   -Wl,--wrap,avcodec_send_frame         \
6347                   -Wl,--wrap,avcodec_receive_frame      \
6348                   -Wl,--wrap,swr_convert                \
6349                   -Wl,--wrap,avresample_convert         \
6350                   -Wl,--wrap,sws_scale ||
6351     disable xmm_clobber_test
6352
6353 check_ld "cc" <<EOF && enable proper_dce
6354 extern const int array[512];
6355 static inline int func(void) { return array[0]; }
6356 int main(void) { return 0; }
6357 EOF
6358
6359 if enabled proper_dce; then
6360     echo "X { local: *; };" > $TMPV
6361     if test_ldflags -Wl,${version_script},$TMPV; then
6362         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6363         check_cc <<EOF && enable symver_asm_label
6364 void ff_foo(void) __asm__ ("av_foo@VERSION");
6365 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6366 EOF
6367         check_cc <<EOF && enable symver_gnu_asm
6368 __asm__(".symver ff_foo,av_foo@VERSION");
6369 void ff_foo(void) {}
6370 EOF
6371     fi
6372 fi
6373
6374 if [ -z "$optflags" ]; then
6375     if enabled small; then
6376         optflags=$cflags_size
6377     elif enabled optimizations; then
6378         optflags=$cflags_speed
6379     else
6380         optflags=$cflags_noopt
6381     fi
6382 fi
6383
6384 if [ -z "$nvccflags" ]; then
6385     nvccflags=$nvccflags_default
6386 fi
6387
6388 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6389     nvccflags="$nvccflags -m64"
6390 else
6391     nvccflags="$nvccflags -m32"
6392 fi
6393
6394 check_optflags(){
6395     check_cflags "$@"
6396     enabled lto && check_ldflags "$@"
6397 }
6398
6399 check_optflags $optflags
6400 check_optflags -fno-math-errno
6401 check_optflags -fno-signed-zeros
6402
6403 if enabled lto; then
6404     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6405     check_cflags  -flto
6406     check_ldflags -flto $cpuflags
6407     disable inline_asm_direct_symbol_refs
6408 fi
6409
6410 enabled ftrapv && check_cflags -ftrapv
6411
6412 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6413 int x;
6414 EOF
6415
6416
6417 if enabled icc; then
6418     # Just warnings, no remarks
6419     check_cflags -w1
6420     # -wd: Disable following warnings
6421     # 144, 167, 556: -Wno-pointer-sign
6422     # 188: enumerated type mixed with another type
6423     # 1292: attribute "foo" ignored
6424     # 1419: external declaration in primary source file
6425     # 10006: ignoring unknown option -fno-signed-zeros
6426     # 10148: ignoring unknown option -Wno-parentheses
6427     # 10156: ignoring option '-W'; no argument required
6428     # 13200: No EMMS instruction before call to function
6429     # 13203: No EMMS instruction before return from function
6430     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6431     # 11030: Warning unknown option --as-needed
6432     # 10156: ignoring option '-export'; no argument required
6433     check_ldflags -wd10156,11030
6434     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6435     enable ebp_available
6436     # The test above does not test linking
6437     enabled lto && disable symver_asm_label
6438     if enabled x86_32; then
6439         icc_version=$($cc -dumpversion)
6440         test ${icc_version%%.*} -ge 11 &&
6441             check_cflags -falign-stack=maintain-16-byte ||
6442             disable aligned_stack
6443     fi
6444 elif enabled ccc; then
6445     # disable some annoying warnings
6446     add_cflags -msg_disable bitnotint
6447     add_cflags -msg_disable mixfuncvoid
6448     add_cflags -msg_disable nonstandcast
6449     add_cflags -msg_disable unsupieee
6450 elif enabled gcc; then
6451     check_optflags -fno-tree-vectorize
6452     check_cflags -Werror=format-security
6453     check_cflags -Werror=implicit-function-declaration
6454     check_cflags -Werror=missing-prototypes
6455     check_cflags -Werror=return-type
6456     check_cflags -Werror=vla
6457     check_cflags -Wformat
6458     check_cflags -fdiagnostics-color=auto
6459     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6460 elif enabled llvm_gcc; then
6461     check_cflags -mllvm -stack-alignment=16
6462 elif enabled clang; then
6463     check_cflags -mllvm -stack-alignment=16
6464     check_cflags -mstack-alignment=16
6465     check_cflags -Qunused-arguments
6466     check_cflags -Werror=implicit-function-declaration
6467     check_cflags -Werror=missing-prototypes
6468     check_cflags -Werror=return-type
6469 elif enabled cparser; then
6470     add_cflags -Wno-missing-variable-declarations
6471     add_cflags -Wno-empty-statement
6472 elif enabled armcc; then
6473     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6474     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6475     # 2523: use of inline assembly is deprecated
6476     add_cflags -W${armcc_opt},--diag_suppress=2523
6477     add_cflags -W${armcc_opt},--diag_suppress=1207
6478     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6479     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6480     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6481     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6482 elif enabled tms470; then
6483     add_cflags -pds=824 -pds=837
6484     disable inline_asm
6485 elif enabled pathscale; then
6486     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6487 elif enabled_any msvc icl; then
6488     enabled x86_32 && disable aligned_stack
6489     enabled_all x86_32 debug && add_cflags -Oy-
6490     enabled debug && add_ldflags -debug
6491     enable pragma_deprecated
6492     if enabled icl; then
6493         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6494         # (correctly) on icl 13.x.
6495         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6496             add_cflags -Qansi-alias
6497         # Some inline asm is not compilable in debug
6498         if enabled debug; then
6499             disable ebp_available
6500             disable ebx_available
6501         fi
6502     fi
6503     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6504     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6505     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6506     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6507     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6508     # MSVC 2013 and newer can handle it fine.
6509     # If this declspec fails, force including stdlib.h before the restrict redefinition
6510     # happens in config.h.
6511     if [ $_restrict != restrict ]; then
6512         check_cc <<EOF || add_cflags -FIstdlib.h
6513 __declspec($_restrict) void* foo(int);
6514 EOF
6515     fi
6516     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6517     # Issue has been fixed in MSVC v19.00.24218.
6518     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6519         check_cflags -d2SSAOptimizer-
6520     # enable utf-8 source processing on VS2015 U2 and newer
6521     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6522         add_cflags -utf-8
6523 fi
6524
6525 for pfx in "" host_; do
6526     varname=${pfx%_}cc_type
6527     eval "type=\$$varname"
6528     if [ "$type" = "msvc" ]; then
6529         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6530 static inline int foo(int a) { return a; }
6531 EOF
6532     fi
6533 done
6534
6535 case $as_type in
6536     clang)
6537         add_asflags -Qunused-arguments
6538     ;;
6539 esac
6540
6541 case $ld_type in
6542     clang)
6543         check_ldflags -Qunused-arguments
6544     ;;
6545 esac
6546
6547 case $target_os in
6548     osf1)
6549         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6550     ;;
6551 esac
6552
6553 enable frame_thread_encoder
6554
6555 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6556
6557 check_deps $CONFIG_LIST       \
6558            $CONFIG_EXTRA      \
6559            $HAVE_LIST         \
6560            $ALL_COMPONENTS    \
6561
6562 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"
6563
6564
6565 if test $target_os = "haiku"; then
6566     disable memalign
6567     disable posix_memalign
6568 fi
6569
6570 # add_dep lib dep
6571 # -> enable ${lib}_deps_${dep}
6572 # -> add $dep to ${lib}_deps only once
6573 add_dep() {
6574     lib=$1
6575     dep=$2
6576     enabled "${lib}_deps_${dep}" && return 0
6577     enable  "${lib}_deps_${dep}"
6578     prepend "${lib}_deps" $dep
6579 }
6580
6581 # merge deps lib components
6582 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6583 merge_deps() {
6584     lib=$1
6585     shift
6586     for comp in $*; do
6587         enabled $comp || continue
6588         eval "dep=\"\$${comp}_deps\""
6589         for d in $dep; do
6590             add_dep $lib $d
6591         done
6592     done
6593 }
6594
6595 merge_deps libavfilter $FILTER_LIST
6596
6597 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6598
6599 for thread in $THREADS_LIST; do
6600     if enabled $thread; then
6601         test -n "$thread_type" &&
6602             die "ERROR: Only one thread type must be selected." ||
6603             thread_type="$thread"
6604     fi
6605 done
6606
6607 if disabled stdatomic_h; then
6608     if enabled atomics_gcc; then
6609         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6610     elif enabled atomics_win32; then
6611         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6612     elif enabled atomics_suncc; then
6613         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6614     elif enabled pthreads; then
6615         add_compat atomics/pthread/stdatomic.o
6616         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6617     else
6618         enabled threads && die "Threading is enabled, but no atomics are available"
6619         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6620     fi
6621 fi
6622
6623 # Check if requested libraries were found.
6624 for lib in $AUTODETECT_LIBS; do
6625     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6626 done
6627
6628 enabled zlib && add_cppflags -DZLIB_CONST
6629
6630 # conditional library dependencies, in linking order
6631 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6632 enabled afir_filter         && prepend avfilter_deps "avcodec"
6633 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6634 enabled aresample_filter    && prepend avfilter_deps "swresample"
6635 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6636 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6637 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6638 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6639 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6640 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6641 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6642 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6643 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6644 enabled pan_filter          && prepend avfilter_deps "swresample"
6645 enabled pp_filter           && prepend avfilter_deps "postproc"
6646 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6647 enabled resample_filter && prepend avfilter_deps "avresample"
6648 enabled sab_filter          && prepend avfilter_deps "swscale"
6649 enabled scale_filter    && prepend avfilter_deps "swscale"
6650 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6651 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6652 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6653 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6654 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6655 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6656 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6657 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6658 enabled spp_filter          && prepend avfilter_deps "avcodec"
6659 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6660 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6661 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6662
6663 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6664
6665 enabled opus_decoder    && prepend avcodec_deps "swresample"
6666
6667 expand_deps(){
6668     lib_deps=${1}_deps
6669     eval "deps=\$$lib_deps"
6670     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6671     unique $lib_deps
6672 }
6673
6674 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6675 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6676
6677 map 'expand_deps $v' $LIBRARY_LIST
6678
6679 license="LGPL version 2.1 or later"
6680 if enabled nonfree; then
6681     license="nonfree and unredistributable"
6682 elif enabled gplv3; then
6683     license="GPL version 3 or later"
6684 elif enabled lgplv3; then
6685     license="LGPL version 3 or later"
6686 elif enabled gpl; then
6687     license="GPL version 2 or later"
6688 fi
6689
6690 if test "$quiet" != "yes"; then
6691
6692 echo "install prefix            $prefix"
6693 echo "source path               $source_path"
6694 echo "C compiler                $cc"
6695 echo "C library                 $libc_type"
6696 if test "$host_cc" != "$cc"; then
6697     echo "host C compiler           $host_cc"
6698     echo "host C library            $host_libc_type"
6699 fi
6700 echo "ARCH                      $arch ($cpu)"
6701 if test "$build_suffix" != ""; then
6702     echo "build suffix              $build_suffix"
6703 fi
6704 if test "$progs_suffix" != ""; then
6705     echo "progs suffix              $progs_suffix"
6706 fi
6707 if test "$extra_version" != ""; then
6708     echo "version string suffix     $extra_version"
6709 fi
6710 echo "big-endian                ${bigendian-no}"
6711 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6712 if enabled x86; then
6713     echo "standalone assembly       ${x86asm-no}"
6714     echo "x86 assembler             ${x86asmexe}"
6715     echo "MMX enabled               ${mmx-no}"
6716     echo "MMXEXT enabled            ${mmxext-no}"
6717     echo "3DNow! enabled            ${amd3dnow-no}"
6718     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6719     echo "SSE enabled               ${sse-no}"
6720     echo "SSSE3 enabled             ${ssse3-no}"
6721     echo "AESNI enabled             ${aesni-no}"
6722     echo "AVX enabled               ${avx-no}"
6723     echo "AVX2 enabled              ${avx2-no}"
6724     echo "XOP enabled               ${xop-no}"
6725     echo "FMA3 enabled              ${fma3-no}"
6726     echo "FMA4 enabled              ${fma4-no}"
6727     echo "i686 features enabled     ${i686-no}"
6728     echo "CMOV is fast              ${fast_cmov-no}"
6729     echo "EBX available             ${ebx_available-no}"
6730     echo "EBP available             ${ebp_available-no}"
6731 fi
6732 if enabled aarch64; then
6733     echo "NEON enabled              ${neon-no}"
6734     echo "VFP enabled               ${vfp-no}"
6735 fi
6736 if enabled arm; then
6737     echo "ARMv5TE enabled           ${armv5te-no}"
6738     echo "ARMv6 enabled             ${armv6-no}"
6739     echo "ARMv6T2 enabled           ${armv6t2-no}"
6740     echo "VFP enabled               ${vfp-no}"
6741     echo "NEON enabled              ${neon-no}"
6742     echo "THUMB enabled             ${thumb-no}"
6743 fi
6744 if enabled mips; then
6745     echo "MIPS FPU enabled          ${mipsfpu-no}"
6746     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6747     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6748     echo "MIPS MSA enabled          ${msa-no}"
6749     echo "LOONGSON MMI enabled      ${mmi-no}"
6750 fi
6751 if enabled ppc; then
6752     echo "AltiVec enabled           ${altivec-no}"
6753     echo "VSX enabled               ${vsx-no}"
6754     echo "POWER8 enabled            ${power8-no}"
6755     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6756     echo "dcbzl available           ${dcbzl-no}"
6757 fi
6758 echo "debug symbols             ${debug-no}"
6759 echo "strip symbols             ${stripping-no}"
6760 echo "optimize for size         ${small-no}"
6761 echo "optimizations             ${optimizations-no}"
6762 echo "static                    ${static-no}"
6763 echo "shared                    ${shared-no}"
6764 echo "postprocessing support    ${postproc-no}"
6765 echo "network support           ${network-no}"
6766 echo "threading support         ${thread_type-no}"
6767 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6768 echo "texi2html enabled         ${texi2html-no}"
6769 echo "perl enabled              ${perl-no}"
6770 echo "pod2man enabled           ${pod2man-no}"
6771 echo "makeinfo enabled          ${makeinfo-no}"
6772 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6773 test -n "$random_seed" &&
6774     echo "random seed               ${random_seed}"
6775 echo
6776
6777 echo "External libraries:"
6778 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6779 echo
6780
6781 echo "External libraries providing hardware acceleration:"
6782 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6783 echo
6784
6785 echo "Libraries:"
6786 print_enabled '' $LIBRARY_LIST | print_in_columns
6787 echo
6788
6789 echo "Programs:"
6790 print_enabled '' $PROGRAM_LIST | print_in_columns
6791 echo
6792
6793 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6794     echo "Enabled ${type}s:"
6795     eval list=\$$(toupper $type)_LIST
6796     print_enabled '_*' $list | print_in_columns
6797     echo
6798 done
6799
6800 if test -n "$ignore_tests"; then
6801     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6802     echo "Ignored FATE tests:"
6803     echo $ignore_tests | print_in_columns
6804     echo
6805 fi
6806
6807 echo "License: $license"
6808
6809 echo "Creating configuration files ..."
6810
6811 fi # test "$quiet" != "yes"
6812
6813 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6814
6815 enabled stripping || strip="echo skipping strip"
6816
6817 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6818
6819 cat > ffbuild/config.mak <<EOF
6820 # Automatically generated by configure - do not modify!
6821 ifndef FFMPEG_CONFIG_MAK
6822 FFMPEG_CONFIG_MAK=1
6823 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6824 prefix=$prefix
6825 LIBDIR=\$(DESTDIR)$libdir
6826 SHLIBDIR=\$(DESTDIR)$shlibdir
6827 INCDIR=\$(DESTDIR)$incdir
6828 BINDIR=\$(DESTDIR)$bindir
6829 DATADIR=\$(DESTDIR)$datadir
6830 DOCDIR=\$(DESTDIR)$docdir
6831 MANDIR=\$(DESTDIR)$mandir
6832 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6833 INSTALL_NAME_DIR=$install_name_dir
6834 SRC_PATH=$source_path
6835 SRC_LINK=$source_link
6836 ifndef MAIN_MAKEFILE
6837 SRC_PATH:=\$(SRC_PATH:.%=..%)
6838 endif
6839 CC_IDENT=$cc_ident
6840 ARCH=$arch
6841 INTRINSICS=$intrinsics
6842 CC=$cc
6843 CXX=$cxx
6844 AS=$as
6845 OBJCC=$objcc
6846 LD=$ld
6847 DEPCC=$dep_cc
6848 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6849 DEPAS=$as
6850 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6851 X86ASM=$x86asmexe
6852 DEPX86ASM=$x86asmexe
6853 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6854 AR=$ar
6855 ARFLAGS=$arflags
6856 AR_O=$ar_o
6857 RANLIB=$ranlib
6858 STRIP=$strip
6859 NVCC=$nvcc
6860 CP=cp -p
6861 LN_S=$ln_s
6862 CPPFLAGS=$CPPFLAGS
6863 CFLAGS=$CFLAGS
6864 CXXFLAGS=$CXXFLAGS
6865 OBJCFLAGS=$OBJCFLAGS
6866 ASFLAGS=$ASFLAGS
6867 NVCCFLAGS=$nvccflags
6868 AS_C=$AS_C
6869 AS_O=$AS_O
6870 OBJCC_C=$OBJCC_C
6871 OBJCC_E=$OBJCC_E
6872 OBJCC_O=$OBJCC_O
6873 CC_C=$CC_C
6874 CC_E=$CC_E
6875 CC_O=$CC_O
6876 CXX_C=$CXX_C
6877 CXX_O=$CXX_O
6878 NVCC_C=$NVCC_C
6879 NVCC_O=$NVCC_O
6880 LD_O=$LD_O
6881 X86ASM_O=$X86ASM_O
6882 LD_LIB=$LD_LIB
6883 LD_PATH=$LD_PATH
6884 DLLTOOL=$dlltool
6885 WINDRES=$windres
6886 DEPWINDRES=$dep_cc
6887 DOXYGEN=$doxygen
6888 LDFLAGS=$LDFLAGS
6889 LDEXEFLAGS=$LDEXEFLAGS
6890 LDLIBFLAGS=$LDLIBFLAGS
6891 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6892 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6893 X86ASMFLAGS=$X86ASMFLAGS
6894 BUILDSUF=$build_suffix
6895 PROGSSUF=$progs_suffix
6896 FULLNAME=$FULLNAME
6897 LIBPREF=$LIBPREF
6898 LIBSUF=$LIBSUF
6899 LIBNAME=$LIBNAME
6900 SLIBPREF=$SLIBPREF
6901 SLIBSUF=$SLIBSUF
6902 EXESUF=$EXESUF
6903 EXTRA_VERSION=$extra_version
6904 CCDEP=$CCDEP
6905 CXXDEP=$CXXDEP
6906 CCDEP_FLAGS=$CCDEP_FLAGS
6907 ASDEP=$ASDEP
6908 ASDEP_FLAGS=$ASDEP_FLAGS
6909 X86ASMDEP=$X86ASMDEP
6910 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
6911 CC_DEPFLAGS=$CC_DEPFLAGS
6912 AS_DEPFLAGS=$AS_DEPFLAGS
6913 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
6914 HOSTCC=$host_cc
6915 HOSTLD=$host_ld
6916 HOSTCFLAGS=$host_cflags
6917 HOSTCPPFLAGS=$host_cppflags
6918 HOSTEXESUF=$HOSTEXESUF
6919 HOSTLDFLAGS=$host_ldflags
6920 HOSTEXTRALIBS=$host_extralibs
6921 DEPHOSTCC=$host_cc
6922 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6923 HOSTCCDEP=$HOSTCCDEP
6924 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6925 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6926 HOSTCC_C=$HOSTCC_C
6927 HOSTCC_O=$HOSTCC_O
6928 HOSTLD_O=$HOSTLD_O
6929 TARGET_EXEC=$target_exec $target_exec_args
6930 TARGET_PATH=$target_path
6931 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6932 CFLAGS-ffplay=${sdl2_cflags}
6933 CFLAGS_HEADERS=$CFLAGS_HEADERS
6934 ZLIB=$($ldflags_filter -lz)
6935 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6936 EXTRALIBS=$extralibs
6937 COMPAT_OBJS=$compat_objs
6938 INSTALL=$install
6939 LIBTARGET=${LIBTARGET}
6940 SLIBNAME=${SLIBNAME}
6941 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6942 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6943 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6944 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6945 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6946 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6947 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6948 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6949 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6950 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6951 NOREDZONE_FLAGS=$noredzone_flags
6952 LIBFUZZER_PATH=$libfuzzer_path
6953 IGNORE_TESTS=$ignore_tests
6954 EOF
6955
6956 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
6957
6958 print_program_extralibs(){
6959     eval "program_extralibs=\$${1}_extralibs"
6960     eval echo "EXTRALIBS-${1}=${program_extralibs}" >> ffbuild/config.mak
6961 }
6962
6963 map 'print_program_extralibs $v' $PROGRAM_LIST
6964
6965 cat > $TMPH <<EOF
6966 /* Automatically generated by configure - do not modify! */
6967 #ifndef FFMPEG_CONFIG_H
6968 #define FFMPEG_CONFIG_H
6969 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6970 #define FFMPEG_LICENSE "$(c_escape $license)"
6971 #define CONFIG_THIS_YEAR 2017
6972 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6973 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6974 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6975 #define av_restrict $_restrict
6976 #define EXTERN_PREFIX "${extern_prefix}"
6977 #define EXTERN_ASM ${extern_prefix}
6978 #define BUILDSUF "$build_suffix"
6979 #define SLIBSUF "$SLIBSUF"
6980 #define HAVE_MMX2 HAVE_MMXEXT
6981 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6982 EOF
6983
6984 test -n "$assert_level" &&
6985     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6986
6987 test -n "$malloc_prefix" &&
6988     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6989
6990 if enabled x86asm; then
6991     append config_files $TMPASM
6992     printf '' >$TMPASM
6993 fi
6994
6995 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6996
6997
6998 mkdir -p doc
6999 mkdir -p tests
7000 mkdir -p tests/api
7001 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7002
7003 print_config ARCH_   "$config_files" $ARCH_LIST
7004 print_config HAVE_   "$config_files" $HAVE_LIST
7005 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7006                                      $CONFIG_EXTRA      \
7007                                      $ALL_COMPONENTS    \
7008
7009 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7010 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7011
7012 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7013 cp_if_changed $TMPH config.h
7014 touch ffbuild/.config
7015
7016 enabled x86asm && cp_if_changed $TMPASM config.asm
7017
7018 cat > $TMPH <<EOF
7019 /* Generated by ffconf */
7020 #ifndef AVUTIL_AVCONFIG_H
7021 #define AVUTIL_AVCONFIG_H
7022 EOF
7023
7024 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7025
7026 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7027
7028 cp_if_changed $TMPH libavutil/avconfig.h
7029
7030 # generate the lists of enabled components
7031 print_enabled_components(){
7032     file=$1
7033     struct_name=$2
7034     name=$3
7035     shift 3
7036     echo "static const $struct_name *$name[] = {" > $TMPH
7037     for c in $*; do
7038         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
7039     done
7040     echo "    NULL };" >> $TMPH
7041     cp_if_changed $TMPH $file
7042 }
7043
7044 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7045 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7046
7047 if test -n "$WARNINGS"; then
7048     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7049     enabled fatal_warnings && exit 1
7050 fi
7051
7052 # Settings for pkg-config files
7053
7054 cat > ffbuild/config.sh <<EOF
7055 # Automatically generated by configure - do not modify!
7056 shared=$shared
7057 build_suffix=$build_suffix
7058 prefix=$prefix
7059 libdir=$libdir
7060 incdir=$incdir
7061 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7062 source_path=${source_path}
7063 LIBPREF=${LIBPREF}
7064 LIBSUF=${LIBSUF}
7065
7066 extralibs_avutil="$LIBRT $LIBM"
7067 extralibs_avcodec="$extralibs"
7068 extralibs_avformat="$extralibs"
7069 extralibs_avdevice="$extralibs"
7070 extralibs_avfilter="$extralibs"
7071 extralibs_avresample="$LIBM"
7072 extralibs_postproc=""
7073 extralibs_swscale="$LIBM"
7074 extralibs_swresample="$LIBM $LIBSOXR"
7075 EOF
7076
7077 for lib in $LIBRARY_LIST; do
7078     lib_deps="$(eval echo \$${lib}_deps)"
7079     echo ${lib}_deps=\"$lib_deps\" >> ffbuild/config.sh
7080 done