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

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --quiet                  Suppress showing informative output
  67   --list-decoders          show all available decoders
  68   --list-encoders          show all available encoders
  69   --list-hwaccels          show all available hardware accelerators
  70   --list-demuxers          show all available demuxers
  71   --list-muxers            show all available muxers
  72   --list-parsers           show all available parsers
  73   --list-protocols         show all available protocols
  74   --list-bsfs              show all available bitstream filters
  75   --list-indevs            show all available input devices
  76   --list-outdevs           show all available output devices
  77   --list-filters           show all available filters
  78
  79 Standard options:
  80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
  81   --disable-logging        do not log configure debug information
  82   --fatal-warnings         fail if any configure warning is generated
  83   --prefix=PREFIX          install in PREFIX [$prefix_default]
  84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  87   --libdir=DIR             install libs in DIR [PREFIX/lib]
  88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  89   --incdir=DIR             install includes in DIR [PREFIX/include]
  90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  92   --enable-rpath           use rpath to allow installing libraries in paths
  93                            not part of the dynamic linker search path
  94                            use rpath when linking programs (USE WITH CARE)
  95   --install-name-dir=DIR   Darwin directory name for installed targets
  96
  97 Licensing options:
  98   --enable-gpl             allow use of GPL code, the resulting libs
  99                            and binaries will be under GPL [no]
 100   --enable-version3        upgrade (L)GPL to version 3 [no]
 101   --enable-nonfree         allow use of nonfree code, the resulting libs
 102                            and binaries will be unredistributable [no]
 103
 104 Configuration options:
 105   --disable-static         do not build static libraries [no]
 106   --enable-shared          build shared libraries [no]
 107   --enable-small           optimize for size instead of speed
 108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
 109   --enable-gray            enable full grayscale support (slower color)
 110   --disable-swscale-alpha  disable alpha channel support in swscale
 111   --disable-all            disable building components, libraries and programs
 112   --disable-autodetect     disable automatically detected external libraries [no]
 113
 114 Program options:
 115   --disable-programs       do not build command line programs
 116   --disable-ffmpeg         disable ffmpeg build
 117   --disable-ffplay         disable ffplay build
 118   --disable-ffprobe        disable ffprobe build
 119   --disable-ffserver       disable ffserver build
 120
 121 Documentation options:
 122   --disable-doc            do not build documentation
 123   --disable-htmlpages      do not build HTML documentation pages
 124   --disable-manpages       do not build man documentation pages
 125   --disable-podpages       do not build POD documentation pages
 126   --disable-txtpages       do not build text documentation pages
 127
 128 Component options:
 129   --disable-avdevice       disable libavdevice build
 130   --disable-avcodec        disable libavcodec build
 131   --disable-avformat       disable libavformat build
 132   --disable-swresample     disable libswresample build
 133   --disable-swscale        disable libswscale build
 134   --disable-postproc       disable libpostproc build
 135   --disable-avfilter       disable libavfilter build
 136   --enable-avresample      enable libavresample build [no]
 137   --disable-pthreads       disable pthreads [autodetect]
 138   --disable-w32threads     disable Win32 threads [autodetect]
 139   --disable-os2threads     disable OS/2 threads [autodetect]
 140   --disable-network        disable network support [no]
 141   --disable-dct            disable DCT code
 142   --disable-dwt            disable DWT code
 143   --disable-error-resilience disable error resilience code
 144   --disable-lsp            disable LSP code
 145   --disable-lzo            disable LZO decoder code
 146   --disable-mdct           disable MDCT code
 147   --disable-rdft           disable RDFT code
 148   --disable-fft            disable FFT code
 149   --disable-faan           disable floating point AAN (I)DCT code
 150   --disable-pixelutils     disable pixel utils in libavutil
 151
 152 Individual component options:
 153   --disable-everything     disable all components listed below
 154   --disable-encoder=NAME   disable encoder NAME
 155   --enable-encoder=NAME    enable encoder NAME
 156   --disable-encoders       disable all encoders
 157   --disable-decoder=NAME   disable decoder NAME
 158   --enable-decoder=NAME    enable decoder NAME
 159   --disable-decoders       disable all decoders
 160   --disable-hwaccel=NAME   disable hwaccel NAME
 161   --enable-hwaccel=NAME    enable hwaccel NAME
 162   --disable-hwaccels       disable all hwaccels
 163   --disable-muxer=NAME     disable muxer NAME
 164   --enable-muxer=NAME      enable muxer NAME
 165   --disable-muxers         disable all muxers
 166   --disable-demuxer=NAME   disable demuxer NAME
 167   --enable-demuxer=NAME    enable demuxer NAME
 168   --disable-demuxers       disable all demuxers
 169   --enable-parser=NAME     enable parser NAME
 170   --disable-parser=NAME    disable parser NAME
 171   --disable-parsers        disable all parsers
 172   --enable-bsf=NAME        enable bitstream filter NAME
 173   --disable-bsf=NAME       disable bitstream filter NAME
 174   --disable-bsfs           disable all bitstream filters
 175   --enable-protocol=NAME   enable protocol NAME
 176   --disable-protocol=NAME  disable protocol NAME
 177   --disable-protocols      disable all protocols
 178   --enable-indev=NAME      enable input device NAME
 179   --disable-indev=NAME     disable input device NAME
 180   --disable-indevs         disable input devices
 181   --enable-outdev=NAME     enable output device NAME
 182   --disable-outdev=NAME    disable output device NAME
 183   --disable-outdevs        disable output devices
 184   --disable-devices        disable all devices
 185   --enable-filter=NAME     enable filter NAME
 186   --disable-filter=NAME    disable filter NAME
 187   --disable-filters        disable all filters
 188   --disable-v4l2_m2m       disable V4L2 mem2mem code [autodetect]
 189
 190 External library support:
 191
 192   Using any of the following switches will allow FFmpeg to link to the
 193   corresponding external library. All the components depending on that library
 194   will become enabled, if all their other dependencies are met and they are not
 195   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 196   libwavpack and allow the libwavpack encoder to be built, unless it is
 197   specifically disabled with --disable-encoder=libwavpack.
 198
 199   Note that only the system libraries are auto-detected. All the other external
 200   libraries must be explicitly enabled.
 201
 202   Also note that the following help text describes the purpose of the libraries
 203   themselves, not all their features will necessarily be usable by FFmpeg.
 204
 205   --disable-alsa           disable ALSA support [autodetect]
 206   --disable-appkit         disable Apple AppKit framework [autodetect]
 207   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
 208   --enable-avisynth        enable reading of AviSynth script files [no]
 209   --disable-bzlib          disable bzlib [autodetect]
 210   --disable-coreimage      disable Apple CoreImage framework [autodetect]
 211   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 212   --enable-frei0r          enable frei0r video filtering [no]
 213   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 214                            if openssl, librtmp or gmp is not used [no]
 215   --enable-gmp             enable gmp, needed for rtmp(t)e support
 216                            if openssl or librtmp is not used [no]
 217   --enable-gnutls          enable gnutls, needed for https support
 218                            if openssl is not used [no]
 219   --disable-iconv          disable iconv [autodetect]
 220   --enable-jni             enable JNI support [no]
 221   --enable-ladspa          enable LADSPA audio filtering [no]
 222   --enable-libass          enable libass subtitles rendering,
 223                            needed for subtitles and ass filter [no]
 224   --enable-libbluray       enable BluRay reading using libbluray [no]
 225   --enable-libbs2b         enable bs2b DSP library [no]
 226   --enable-libcaca         enable textual display using libcaca [no]
 227   --enable-libcelt         enable CELT decoding via libcelt [no]
 228   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 229   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 230                            and libraw1394 [no]
 231   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 232   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 233   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 234   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 235   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 236   --enable-libgme          enable Game Music Emu via libgme [no]
 237   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 238   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 239   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 240   --enable-libjack         enable JACK audio sound server [no]
 241   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 242   --enable-libmodplug      enable ModPlug via libmodplug [no]
 243   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 244   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 245   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 246   --enable-libopencv       enable video filtering via libopencv [no]
 247   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 248   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 249   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 250   --enable-libopus         enable Opus de/encoding via libopus [no]
 251   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 252   --enable-librsvg         enable SVG rasterization via librsvg [no]
 253   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 254   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 255   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 256   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 257   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 258   --enable-libsoxr         enable Include libsoxr resampling [no]
 259   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 260   --enable-libssh          enable SFTP protocol via libssh [no]
 261   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 262   --enable-libtheora       enable Theora encoding via libtheora [no]
 263   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 264   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 265   --enable-libvidstab      enable video stabilization using vid.stab [no]
 266   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 267   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 268   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 269                            native implementation exists [no]
 270   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 271   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 272   --enable-libwebp         enable WebP encoding via libwebp [no]
 273   --enable-libx264         enable H.264 encoding via x264 [no]
 274   --enable-libx265         enable HEVC encoding via x265 [no]
 275   --enable-libxavs         enable AVS encoding via xavs [no]
 276   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 277   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 278   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 279   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 280   --enable-libxvid         enable Xvid encoding via xvidcore,
 281                            native MPEG-4/Xvid encoder exists [no]
 282   --enable-libxml2         enable XML parsing using the C library libxml2 [no]
 283   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 284   --enable-libzmq          enable message passing via libzmq [no]
 285   --enable-libzvbi         enable teletext support via libzvbi [no]
 286   --enable-lv2             enable LV2 audio filtering [no]
 287   --disable-lzma           disable lzma [autodetect]
 288   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 289   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
 290   --enable-mediacodec      enable Android MediaCodec support [no]
 291   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 292   --enable-openal          enable OpenAL 1.1 capture support [no]
 293   --enable-opencl          enable OpenCL processing [no]
 294   --enable-opengl          enable OpenGL rendering [no]
 295   --enable-openssl         enable openssl, needed for https support
 296                            if gnutls is not used [no]
 297   --disable-sndio          disable sndio support [autodetect]
 298   --disable-schannel       disable SChannel SSP, needed for TLS support on
 299                            Windows if openssl and gnutls are not used [autodetect]
 300   --disable-sdl2           disable sdl2 [autodetect]
 301   --disable-securetransport disable Secure Transport, needed for TLS support
 302                            on OSX if openssl and gnutls are not used [autodetect]
 303   --disable-xlib           disable xlib [autodetect]
 304   --disable-zlib           disable zlib [autodetect]
 305
 306   The following libraries provide various hardware acceleration features:
 307   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 308   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
 309   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
 310   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 311   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 312   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 313   --enable-libdrm          enable DRM code (Linux) [no]
 314   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 315   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 316   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 317   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 318   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 319   --enable-omx             enable OpenMAX IL code [no]
 320   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 321   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 322   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 323   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 324   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 325
 326 Toolchain options:
 327   --arch=ARCH              select architecture [$arch]
 328   --cpu=CPU                select the minimum required CPU (affects
 329                            instruction selection, may crash on older CPUs)
 330   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 331   --progs-suffix=SUFFIX    program name suffix []
 332   --enable-cross-compile   assume a cross-compiler is used
 333   --sysroot=PATH           root of cross-build tree
 334   --sysinclude=PATH        location of cross-build system headers
 335   --target-os=OS           compiler targets OS [$target_os]
 336   --target-exec=CMD        command to run executables on target
 337   --target-path=DIR        path to view of build directory on target
 338   --target-samples=DIR     path to samples directory on target
 339   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 340   --toolchain=NAME         set tool defaults according to NAME
 341   --nm=NM                  use nm tool NM [$nm_default]
 342   --ar=AR                  use archive tool AR [$ar_default]
 343   --as=AS                  use assembler AS [$as_default]
 344   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 345   --strip=STRIP            use strip tool STRIP [$strip_default]
 346   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 347   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 348   --cc=CC                  use C compiler CC [$cc_default]
 349   --cxx=CXX                use C compiler CXX [$cxx_default]
 350   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 351   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 352   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 353   --ld=LD                  use linker LD [$ld_default]
 354   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 355   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 356   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 357   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 358   --host-cc=HOSTCC         use host C compiler HOSTCC
 359   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 360   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 361   --host-ld=HOSTLD         use host linker HOSTLD
 362   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 363   --host-libs=HLIBS        use libs HLIBS when linking for host
 364   --host-os=OS             compiler host OS [$target_os]
 365   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 366   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 367   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 368   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 369   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 370   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 371   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 372   --extra-version=STRING   version string suffix []
 373   --optflags=OPTFLAGS      override optimization-related compiler flags
 374   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 375   --build-suffix=SUFFIX    library name suffix []
 376   --enable-pic             build position-independent code
 377   --enable-thumb           compile for Thumb instruction set
 378   --enable-lto             use link-time optimization
 379   --env="ENV=override"     override the environment variables
 380
 381 Advanced options (experts only):
 382   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 383   --custom-allocator=NAME  use a supported custom allocator
 384   --disable-symver         disable symbol versioning
 385   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 386   --disable-safe-bitstream-reader
 387                            disable buffer boundary checking in bitreaders
 388                            (faster, but may crash)
 389   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 390
 391 Optimization options (experts only):
 392   --disable-asm            disable all assembly optimizations
 393   --disable-altivec        disable AltiVec optimizations
 394   --disable-vsx            disable VSX optimizations
 395   --disable-power8         disable POWER8 optimizations
 396   --disable-amd3dnow       disable 3DNow! optimizations
 397   --disable-amd3dnowext    disable 3DNow! extended optimizations
 398   --disable-mmx            disable MMX optimizations
 399   --disable-mmxext         disable MMXEXT optimizations
 400   --disable-sse            disable SSE optimizations
 401   --disable-sse2           disable SSE2 optimizations
 402   --disable-sse3           disable SSE3 optimizations
 403   --disable-ssse3          disable SSSE3 optimizations
 404   --disable-sse4           disable SSE4 optimizations
 405   --disable-sse42          disable SSE4.2 optimizations
 406   --disable-avx            disable AVX optimizations
 407   --disable-xop            disable XOP optimizations
 408   --disable-fma3           disable FMA3 optimizations
 409   --disable-fma4           disable FMA4 optimizations
 410   --disable-avx2           disable AVX2 optimizations
 411   --disable-aesni          disable AESNI optimizations
 412   --disable-armv5te        disable armv5te optimizations
 413   --disable-armv6          disable armv6 optimizations
 414   --disable-armv6t2        disable armv6t2 optimizations
 415   --disable-vfp            disable VFP optimizations
 416   --disable-neon           disable NEON optimizations
 417   --disable-inline-asm     disable use of inline assembly
 418   --disable-x86asm         disable use of standalone x86 assembly
 419   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 420   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 421   --disable-msa            disable MSA optimizations
 422   --disable-mipsfpu        disable floating point MIPS optimizations
 423   --disable-mmi            disable Loongson SIMD optimizations
 424   --disable-fast-unaligned consider unaligned accesses slow
 425
 426 Developer options (useful when working on FFmpeg itself):
 427   --disable-debug          disable debugging symbols
 428   --enable-debug=LEVEL     set the debug level [$debuglevel]
 429   --disable-optimizations  disable compiler optimizations
 430   --enable-extra-warnings  enable more compiler warnings
 431   --disable-stripping      disable stripping of executables and shared libraries
 432   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 433                            2 causes a slowdown at runtime.
 434   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 435   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 436                            leaks and errors, using the specified valgrind binary.
 437                            Cannot be combined with --target-exec
 438   --enable-ftrapv          Trap arithmetic overflows
 439   --samples=PATH           location of test samples for FATE, if not set use
 440                            \$FATE_SAMPLES at make invocation time.
 441   --enable-neon-clobber-test check NEON registers for clobbering (should be
 442                            used only for debugging purposes)
 443   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 444                            should be used only for debugging purposes)
 445   --enable-random          randomly enable/disable components
 446   --disable-random
 447   --enable-random=LIST     randomly enable/disable specific components or
 448   --disable-random=LIST    component groups. LIST is a comma-separated list
 449                            of NAME[:PROB] entries where NAME is a component
 450                            (group) and PROB the probability associated with
 451                            NAME (default 0.5).
 452   --random-seed=VALUE      seed value for --enable/disable-random
 453   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 454                            (only applies to --disable-optimizations builds)
 455   --enable-osfuzz          Enable building fuzzer tool
 456   --libfuzzer=PATH         path to libfuzzer
 457   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 458                            in the name) of tests whose result is ignored
 459   --enable-linux-perf      enable Linux Performance Monitor API
 460
 461 NOTE: Object files are built at the place where configure is launched.
 462 EOF
 463   exit 0
 464 }
 465
 466 if test -t 1 && which tput >/dev/null 2>&1; then
 467     ncolors=$(tput colors)
 468     if test -n "$ncolors" && test $ncolors -ge 8; then
 469         bold_color=$(tput bold)
 470         warn_color=$(tput setaf 3)
 471         error_color=$(tput setaf 1)
 472         reset_color=$(tput sgr0)
 473     fi
 474     # 72 used instead of 80 since that's the default of pr
 475     ncols=$(tput cols)
 476 fi
 477 : ${ncols:=72}
 478
 479 log(){
 480     echo "$@" >> $logfile
 481 }
 482
 483 log_file(){
 484     log BEGIN $1
 485     pr -n -t $1 >> $logfile
 486     log END $1
 487 }
 488
 489 warn(){
 490     log "WARNING: $*"
 491     WARNINGS="${WARNINGS}WARNING: $*\n"
 492 }
 493
 494 die(){
 495     log "$@"
 496     echo "$error_color$bold_color$@$reset_color"
 497     cat <<EOF
 498
 499 If you think configure made a mistake, make sure you are using the latest
 500 version from Git.  If the latest version fails, report the problem to the
 501 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 502 EOF
 503     if disabled logging; then
 504         cat <<EOF
 505 Rerun configure with logging enabled (do not use --disable-logging), and
 506 include the log this produces with your report.
 507 EOF
 508     else
 509         cat <<EOF
 510 Include the log file "$logfile" produced by configure as this will help
 511 solve the problem.
 512 EOF
 513     fi
 514     exit 1
 515 }
 516
 517 # Avoid locale weirdness, besides we really just want to translate ASCII.
 518 toupper(){
 519     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 520 }
 521
 522 tolower(){
 523     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 524 }
 525
 526 c_escape(){
 527     echo "$*" | sed 's/["\\]/\\\0/g'
 528 }
 529
 530 sh_quote(){
 531     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 532     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 533     echo "$v"
 534 }
 535
 536 cleanws(){
 537     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 538 }
 539
 540 filter(){
 541     pat=$1
 542     shift
 543     for v; do
 544         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 545     done
 546 }
 547
 548 filter_out(){
 549     pat=$1
 550     shift
 551     for v; do
 552         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 553     done
 554 }
 555
 556 map(){
 557     m=$1
 558     shift
 559     for v; do eval $m; done
 560 }
 561
 562 add_suffix(){
 563     suffix=$1
 564     shift
 565     for v; do echo ${v}${suffix}; done
 566 }
 567
 568 set_all(){
 569     value=$1
 570     shift
 571     for var in $*; do
 572         eval $var=$value
 573     done
 574 }
 575
 576 set_weak(){
 577     value=$1
 578     shift
 579     for var; do
 580         eval : \${$var:=$value}
 581     done
 582 }
 583
 584 sanitize_var_name(){
 585     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 586 }
 587
 588 set_sanitized(){
 589     var=$1
 590     shift
 591     eval $(sanitize_var_name "$var")='$*'
 592 }
 593
 594 get_sanitized(){
 595     eval echo \$$(sanitize_var_name "$1")
 596 }
 597
 598 pushvar(){
 599     for pvar in $*; do
 600         eval level=\${${pvar}_level:=0}
 601         eval ${pvar}_${level}="\$$pvar"
 602         eval ${pvar}_level=$(($level+1))
 603     done
 604 }
 605
 606 popvar(){
 607     for pvar in $*; do
 608         eval level=\${${pvar}_level:-0}
 609         test $level = 0 && continue
 610         eval level=$(($level-1))
 611         eval $pvar="\${${pvar}_${level}}"
 612         eval ${pvar}_level=$level
 613         eval unset ${pvar}_${level}
 614     done
 615 }
 616
 617 request(){
 618     for var in $*; do
 619         eval ${var}_requested=yes
 620         eval $var=
 621     done
 622 }
 623
 624 enable(){
 625     set_all yes $*
 626 }
 627
 628 disable(){
 629     set_all no $*
 630 }
 631
 632 enable_weak(){
 633     set_weak yes $*
 634 }
 635
 636 disable_weak(){
 637     set_weak no $*
 638 }
 639
 640 enable_sanitized(){
 641     for var; do
 642         enable $(sanitize_var_name $var)
 643     done
 644 }
 645
 646 disable_sanitized(){
 647     for var; do
 648         disable $(sanitize_var_name $var)
 649     done
 650 }
 651
 652 do_enable_deep(){
 653     for var; do
 654         enabled $var && continue
 655         eval sel="\$${var}_select"
 656         eval sgs="\$${var}_suggest"
 657         pushvar var sgs
 658         enable_deep $sel
 659         popvar sgs
 660         enable_deep_weak $sgs
 661         popvar var
 662     done
 663 }
 664
 665 enable_deep(){
 666     do_enable_deep $*
 667     enable $*
 668 }
 669
 670 enable_deep_weak(){
 671     for var; do
 672         disabled $var && continue
 673         pushvar var
 674         do_enable_deep $var
 675         popvar var
 676         enable_weak $var
 677     done
 678 }
 679
 680 requested(){
 681     test "${1#!}" = "$1" && op="=" || op="!="
 682     eval test "x\$${1#!}_requested" $op "xyes"
 683 }
 684
 685 enabled(){
 686     test "${1#!}" = "$1" && op="=" || op="!="
 687     eval test "x\$${1#!}" $op "xyes"
 688 }
 689
 690 disabled(){
 691     test "${1#!}" = "$1" && op="=" || op="!="
 692     eval test "x\$${1#!}" $op "xno"
 693 }
 694
 695 enabled_all(){
 696     for opt; do
 697         enabled $opt || return 1
 698     done
 699 }
 700
 701 disabled_all(){
 702     for opt; do
 703         disabled $opt || return 1
 704     done
 705 }
 706
 707 enabled_any(){
 708     for opt; do
 709         enabled $opt && return 0
 710     done
 711 }
 712
 713 disabled_any(){
 714     for opt; do
 715         disabled $opt && return 0
 716     done
 717     return 1
 718 }
 719
 720 set_default(){
 721     for opt; do
 722         eval : \${$opt:=\$${opt}_default}
 723     done
 724 }
 725
 726 is_in(){
 727     value=$1
 728     shift
 729     for var in $*; do
 730         [ $var = $value ] && return 0
 731     done
 732     return 1
 733 }
 734
 735 check_deps(){
 736     for cfg; do
 737         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 738         disabled ${cfg}_checking && continue
 739         enable ${cfg}_checking
 740
 741         eval dep_all="\$${cfg}_deps"
 742         eval dep_any="\$${cfg}_deps_any"
 743         eval dep_con="\$${cfg}_conflict"
 744         eval dep_sel="\$${cfg}_select"
 745         eval dep_sgs="\$${cfg}_suggest"
 746         eval dep_ifa="\$${cfg}_if"
 747         eval dep_ifn="\$${cfg}_if_any"
 748
 749         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 750         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 751         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 752
 753         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 754         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 755         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 756         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 757         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
 758         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 759
 760         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 761
 762         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 763             # filter out library deps, these do not belong in extralibs
 764             is_in $dep $LIBRARY_LIST && continue
 765             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 766         done
 767
 768         disable ${cfg}_checking
 769     done
 770 }
 771
 772 print_config(){
 773     pfx=$1
 774     files=$2
 775     shift 2
 776     map 'eval echo "$v \${$v:-no}"' "$@" |
 777     awk "BEGIN { split(\"$files\", files) }
 778         {
 779             c = \"$pfx\" toupper(\$1);
 780             v = \$2;
 781             sub(/yes/, 1, v);
 782             sub(/no/,  0, v);
 783             for (f in files) {
 784                 file = files[f];
 785                 if (file ~ /\\.h\$/) {
 786                     printf(\"#define %s %d\\n\", c, v) >>file;
 787                 } else if (file ~ /\\.asm\$/) {
 788                     printf(\"%%define %s %d\\n\", c, v) >>file;
 789                 } else if (file ~ /\\.mak\$/) {
 790                     n = -v ? \"\" : \"!\";
 791                     printf(\"%s%s=yes\\n\", n, c) >>file;
 792                 } else if (file ~ /\\.texi\$/) {
 793                     pre = -v ? \"\" : \"@c \";
 794                     yesno = \$2;
 795                     c2 = tolower(c);
 796                     gsub(/_/, \"-\", c2);
 797                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 798                 }
 799             }
 800         }"
 801 }
 802
 803 print_enabled(){
 804     suf=$1
 805     shift
 806     for v; do
 807         enabled $v && printf "%s\n" ${v%$suf}
 808     done
 809 }
 810
 811 append(){
 812     var=$1
 813     shift
 814     eval "$var=\"\$$var $*\""
 815 }
 816
 817 prepend(){
 818     var=$1
 819     shift
 820     eval "$var=\"$* \$$var\""
 821 }
 822
 823 unique(){
 824     var=$1
 825     uniq_list=""
 826     for tok in $(eval echo \$$var); do
 827         uniq_list="$(filter_out $tok $uniq_list) $tok"
 828     done
 829     eval "$var=\"${uniq_list}\""
 830 }
 831
 832 resolve(){
 833     var=$1
 834     tmpvar=
 835     for entry in $(eval echo \$$var); do
 836         tmpvar="$tmpvar $(eval echo \$${entry})"
 837     done
 838     eval "$var=\"${tmpvar}\""
 839 }
 840
 841 add_cppflags(){
 842     append CPPFLAGS "$@"
 843 }
 844
 845 add_cflags(){
 846     append CFLAGS $($cflags_filter "$@")
 847 }
 848
 849 add_cflags_headers(){
 850     append CFLAGS_HEADERS $($cflags_filter "$@")
 851 }
 852
 853 add_cxxflags(){
 854     append CXXFLAGS $($cflags_filter "$@")
 855 }
 856
 857 add_asflags(){
 858     append ASFLAGS $($asflags_filter "$@")
 859 }
 860
 861 add_objcflags(){
 862     append OBJCFLAGS $($objcflags_filter "$@")
 863 }
 864
 865 add_ldflags(){
 866     append LDFLAGS $($ldflags_filter "$@")
 867 }
 868
 869 add_ldexeflags(){
 870     append LDEXEFLAGS $($ldflags_filter "$@")
 871 }
 872
 873 add_ldsoflags(){
 874     append LDSOFLAGS $($ldflags_filter "$@")
 875 }
 876
 877 add_stripflags(){
 878     append ASMSTRIPFLAGS "$@"
 879 }
 880
 881 add_extralibs(){
 882     prepend extralibs $($ldflags_filter "$@")
 883 }
 884
 885 add_host_cppflags(){
 886     append host_cppflags "$@"
 887 }
 888
 889 add_host_cflags(){
 890     append host_cflags $($host_cflags_filter "$@")
 891 }
 892
 893 add_host_ldflags(){
 894     append host_ldflags $($host_ldflags_filter "$@")
 895 }
 896
 897 add_compat(){
 898     append compat_objs $1
 899     shift
 900     map 'add_cppflags -D$v' "$@"
 901 }
 902
 903 check_cmd(){
 904     log "$@"
 905     "$@" >> $logfile 2>&1
 906 }
 907
 908 check_stat(){
 909     log check_stat "$@"
 910     stat "$1" >> $logfile 2>&1
 911 }
 912
 913 cc_o(){
 914     eval printf '%s\\n' $CC_O
 915 }
 916
 917 cc_e(){
 918     eval printf '%s\\n' $CC_E
 919 }
 920
 921 check_cc(){
 922     log check_cc "$@"
 923     cat > $TMPC
 924     log_file $TMPC
 925     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 926 }
 927
 928 check_cxx(){
 929     log check_cxx "$@"
 930     cat > $TMPCPP
 931     log_file $TMPCPP
 932     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 933 }
 934
 935 check_objcc(){
 936     log check_objcc "$@"
 937     cat > $TMPM
 938     log_file $TMPM
 939     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 940 }
 941
 942 check_cpp(){
 943     log check_cpp "$@"
 944     cat > $TMPC
 945     log_file $TMPC
 946     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 947 }
 948
 949 as_o(){
 950     eval printf '%s\\n' $AS_O
 951 }
 952
 953 check_as(){
 954     log check_as "$@"
 955     cat > $TMPS
 956     log_file $TMPS
 957     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 958 }
 959
 960 check_inline_asm(){
 961     log check_inline_asm "$@"
 962     name="$1"
 963     code="$2"
 964     shift 2
 965     disable $name
 966     check_cc "$@" <<EOF && enable $name
 967 void foo(void){ __asm__ volatile($code); }
 968 EOF
 969 }
 970
 971 check_inline_asm_flags(){
 972     log check_inline_asm_flags "$@"
 973     name="$1"
 974     code="$2"
 975     flags=''
 976     shift 2
 977     while [ "$1" != "" ]; do
 978       append flags $1
 979       shift
 980     done;
 981     disable $name
 982     cat > $TMPC <<EOF
 983 void foo(void){ __asm__ volatile($code); }
 984 EOF
 985     log_file $TMPC
 986     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 987     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 988 }
 989
 990 check_insn(){
 991     log check_insn "$@"
 992     check_inline_asm ${1}_inline "\"$2\""
 993     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 994 }
 995
 996 check_x86asm(){
 997     log check_x86asm "$@"
 998     echo "$1" > $TMPS
 999     log_file $TMPS
1000     shift 1
1001     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1002 }
1003
1004 ld_o(){
1005     eval printf '%s\\n' $LD_O
1006 }
1007
1008 check_ld(){
1009     log check_ld "$@"
1010     type=$1
1011     shift 1
1012     flags=$(filter_out '-l*|*.so' $@)
1013     libs=$(filter '-l*|*.so' $@)
1014     check_$type $($cflags_filter $flags) || return
1015     flags=$($ldflags_filter $flags)
1016     libs=$($ldflags_filter $libs)
1017     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1018 }
1019
1020 print_include(){
1021     hdr=$1
1022     test "${hdr%.h}" = "${hdr}" &&
1023         echo "#include $hdr"    ||
1024         echo "#include <$hdr>"
1025 }
1026
1027 check_code(){
1028     log check_code "$@"
1029     check=$1
1030     headers=$2
1031     code=$3
1032     shift 3
1033     {
1034         for hdr in $headers; do
1035             print_include $hdr
1036         done
1037         echo "int main(void) { $code; return 0; }"
1038     } | check_$check "$@"
1039 }
1040
1041 check_cppflags(){
1042     log check_cppflags "$@"
1043     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1044 #include <stdlib.h>
1045 EOF
1046 }
1047
1048 test_cflags(){
1049     log test_cflags "$@"
1050     set -- $($cflags_filter "$@")
1051     check_cc "$@" <<EOF
1052 int x;
1053 EOF
1054 }
1055
1056 check_cflags(){
1057     log check_cflags "$@"
1058     test_cflags "$@" && add_cflags "$@"
1059 }
1060
1061 check_cxxflags(){
1062     log check_cxxflags "$@"
1063     set -- $($cflags_filter "$@")
1064     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1065 int x;
1066 EOF
1067 }
1068
1069 test_objcflags(){
1070     log test_objcflags "$@"
1071     set -- $($objcflags_filter "$@")
1072     check_objcc "$@" <<EOF
1073 int x;
1074 EOF
1075 }
1076
1077 check_objcflags(){
1078     log check_objcflags "$@"
1079     test_objcflags "$@" && add_objcflags "$@"
1080 }
1081
1082 test_ldflags(){
1083     log test_ldflags "$@"
1084     set -- $($ldflags_filter "$@")
1085     check_ld "cc" "$@" <<EOF
1086 int main(void){ return 0; }
1087 EOF
1088 }
1089
1090 check_ldflags(){
1091     log check_ldflags "$@"
1092     test_ldflags "$@" && add_ldflags "$@"
1093 }
1094
1095 test_stripflags(){
1096     log test_stripflags "$@"
1097     # call check_cc to get a fresh TMPO
1098     check_cc <<EOF
1099 int main(void) { return 0; }
1100 EOF
1101     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1102 }
1103
1104 check_stripflags(){
1105     log check_stripflags "$@"
1106     test_stripflags "$@" && add_stripflags "$@"
1107 }
1108
1109 check_header(){
1110     log check_header "$@"
1111     headers=$1
1112     shift
1113     disable_sanitized $headers
1114     {
1115         for hdr in $headers; do
1116             print_include $hdr
1117         done
1118         echo "int x;"
1119     } | check_cpp "$@" && enable_sanitized $headers
1120 }
1121
1122 check_header_objcc(){
1123     log check_header_objcc "$@"
1124     rm -f -- "$TMPO"
1125     header=$1
1126     shift
1127     disable_sanitized $header
1128     {
1129        echo "#include <$header>"
1130        echo "int main(void) { return 0; }"
1131     } | check_objcc && check_stat "$TMPO" && enable_sanitized $header
1132 }
1133
1134 check_apple_framework(){
1135     log check_apple_framework "$@"
1136     framework="$1"
1137     name="$(tolower $framework)"
1138     header="${framework}/${framework}.h"
1139     disable $name
1140     check_header_objcc $header &&
1141         enable $name && eval ${name}_extralibs='"-framework $framework"'
1142 }
1143
1144 check_func(){
1145     log check_func "$@"
1146     func=$1
1147     shift
1148     disable $func
1149     check_ld "cc" "$@" <<EOF && enable $func
1150 extern int $func();
1151 int main(void){ $func(); }
1152 EOF
1153 }
1154
1155 check_complexfunc(){
1156     log check_complexfunc "$@"
1157     func=$1
1158     narg=$2
1159     shift 2
1160     test $narg = 2 && args="f, g" || args="f * I"
1161     disable $func
1162     check_ld "cc" "$@" <<EOF && enable $func
1163 #include <complex.h>
1164 #include <math.h>
1165 float foo(complex float f, complex float g) { return $func($args); }
1166 int main(void){ return (int) foo; }
1167 EOF
1168 }
1169
1170 check_mathfunc(){
1171     log check_mathfunc "$@"
1172     func=$1
1173     narg=$2
1174     shift 2
1175     test $narg = 2 && args="f, g" || args="f"
1176     disable $func
1177     check_ld "cc" "$@" <<EOF && enable $func
1178 #include <math.h>
1179 float foo(float f, float g) { return $func($args); }
1180 int main(void){ return (int) foo; }
1181 EOF
1182 }
1183
1184 check_func_headers(){
1185     log check_func_headers "$@"
1186     headers=$1
1187     funcs=$2
1188     shift 2
1189     {
1190         for hdr in $headers; do
1191             print_include $hdr
1192         done
1193         echo "#include <stdint.h>"
1194         for func in $funcs; do
1195             echo "long check_$func(void) { return (long) $func; }"
1196         done
1197         echo "int main(void) { int ret = 0;"
1198         # LTO could optimize out the test functions without this
1199         for func in $funcs; do
1200             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1201         done
1202         echo "return ret; }"
1203     } | check_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1204 }
1205
1206 check_class_headers_cpp(){
1207     log check_class_headers_cpp "$@"
1208     headers=$1
1209     classes=$2
1210     shift 2
1211     {
1212         for hdr in $headers; do
1213             echo "#include <$hdr>"
1214         done
1215         echo "int main(void) { "
1216         i=1
1217         for class in $classes; do
1218             echo "$class obj$i;"
1219             i=$(expr $i + 1)
1220         done
1221         echo "return 0; }"
1222     } | check_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1223 }
1224
1225 check_cpp_condition(){
1226     log check_cpp_condition "$@"
1227     header=$1
1228     condition=$2
1229     shift 2
1230     check_cpp "$@" <<EOF
1231 #include <$header>
1232 #if !($condition)
1233 #error "unsatisfied condition: $condition"
1234 #endif
1235 EOF
1236 }
1237
1238 test_cflags_cc(){
1239     log test_cflags_cc "$@"
1240     flags=$1
1241     header=$2
1242     condition=$3
1243     shift 3
1244     set -- $($cflags_filter "$flags")
1245     check_cc "$@" <<EOF
1246 #include <$header>
1247 #if !($condition)
1248 #error "unsatisfied condition: $condition"
1249 #endif
1250 EOF
1251 }
1252
1253 check_lib(){
1254     log check_lib "$@"
1255     name="$1"
1256     headers="$2"
1257     funcs="$3"
1258     shift 3
1259     disable $name
1260     check_func_headers "$headers" "$funcs" "$@" &&
1261         enable $name && eval ${name}_extralibs="\$@"
1262 }
1263
1264 check_lib_cpp(){
1265     log check_lib_cpp "$@"
1266     name="$1"
1267     headers="$2"
1268     classes="$3"
1269     shift 3
1270     disable $name
1271     check_class_headers_cpp "$headers" "$classes" "$@" &&
1272         enable $name && eval ${name}_extralibs="\$@"
1273 }
1274
1275 test_pkg_config(){
1276     log test_pkg_config "$@"
1277     name="$1"
1278     pkg_version="$2"
1279     pkg="${2%% *}"
1280     headers="$3"
1281     funcs="$4"
1282     shift 4
1283     disable $name
1284     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1285     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1286     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1287     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1288         enable $name &&
1289         set_sanitized "${name}_cflags"    $pkg_cflags &&
1290         set_sanitized "${name}_extralibs" $pkg_libs
1291 }
1292
1293 check_pkg_config(){
1294     log check_pkg_config "$@"
1295     name="$1"
1296     test_pkg_config "$@" &&
1297         eval add_cflags \$${name}_cflags
1298 }
1299
1300 check_exec(){
1301     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1302 }
1303
1304 check_exec_crash(){
1305     log check_exec_crash "$@"
1306     code=$(cat)
1307
1308     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1309     # are safe but may not be available everywhere.  Thus we use
1310     # raise(SIGTERM) instead.  The check is run in a subshell so we
1311     # can redirect the "Terminated" message from the shell.  SIGBUS
1312     # is not defined by standard C so it is used conditionally.
1313
1314     (check_exec "$@") >> $logfile 2>&1 <<EOF
1315 #include <signal.h>
1316 static void sighandler(int sig){
1317     raise(SIGTERM);
1318 }
1319 int foo(void){
1320     $code
1321 }
1322 int (*func_ptr)(void) = foo;
1323 int main(void){
1324     signal(SIGILL, sighandler);
1325     signal(SIGFPE, sighandler);
1326     signal(SIGSEGV, sighandler);
1327 #ifdef SIGBUS
1328     signal(SIGBUS, sighandler);
1329 #endif
1330     return func_ptr();
1331 }
1332 EOF
1333 }
1334
1335 check_type(){
1336     log check_type "$@"
1337     headers=$1
1338     type=$2
1339     shift 2
1340     disable_sanitized "$type"
1341     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1342 }
1343
1344 check_struct(){
1345     log check_struct "$@"
1346     headers=$1
1347     struct=$2
1348     member=$3
1349     shift 3
1350     disable_sanitized "${struct}_${member}"
1351     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1352         enable_sanitized "${struct}_${member}"
1353 }
1354
1355 check_builtin(){
1356     log check_builtin "$@"
1357     name=$1
1358     headers=$2
1359     builtin=$3
1360     shift 3
1361     disable "$name"
1362     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1363 }
1364
1365 check_compile_assert(){
1366     log check_compile_assert "$@"
1367     name=$1
1368     headers=$2
1369     condition=$3
1370     shift 3
1371     disable "$name"
1372     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1373 }
1374
1375 require(){
1376     log require "$@"
1377     name_version="$1"
1378     name="${1%% *}"
1379     headers="$2"
1380     func="$3"
1381     shift 3
1382     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1383 }
1384
1385 require_cpp(){
1386     name="$1"
1387     headers="$2"
1388     classes="$3"
1389     shift 3
1390     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1391 }
1392
1393 require_header(){
1394     log require_header "$@"
1395     headers="$1"
1396     shift
1397     check_header "$headers" "$@" || die "ERROR: $headers not found"
1398 }
1399
1400 require_cpp_condition(){
1401     log require_cpp_condition "$@"
1402     header="$1"
1403     condition="$2"
1404     shift 2
1405     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1406 }
1407
1408 require_pkg_config(){
1409     log require_pkg_config "$@"
1410     pkg_version="$2"
1411     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1412 }
1413
1414 hostcc_e(){
1415     eval printf '%s\\n' $HOSTCC_E
1416 }
1417
1418 hostcc_o(){
1419     eval printf '%s\\n' $HOSTCC_O
1420 }
1421
1422 check_host_cc(){
1423     log check_host_cc "$@"
1424     cat > $TMPC
1425     log_file $TMPC
1426     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1427 }
1428
1429 check_host_cpp(){
1430     log check_host_cpp "$@"
1431     cat > $TMPC
1432     log_file $TMPC
1433     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1434 }
1435
1436 check_host_cppflags(){
1437     log check_host_cppflags "$@"
1438     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1439 #include <stdlib.h>
1440 EOF
1441 }
1442
1443 check_host_cflags(){
1444     log check_host_cflags "$@"
1445     set -- $($host_cflags_filter "$@")
1446     check_host_cc "$@" <<EOF && append host_cflags "$@"
1447 int x;
1448 EOF
1449 }
1450
1451 check_host_cpp_condition(){
1452     log check_host_cpp_condition "$@"
1453     header=$1
1454     condition=$2
1455     shift 2
1456     check_host_cpp "$@" <<EOF
1457 #include <$header>
1458 #if !($condition)
1459 #error "unsatisfied condition: $condition"
1460 #endif
1461 EOF
1462 }
1463
1464 cp_if_changed(){
1465     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1466     mkdir -p "$(dirname $2)"
1467     cp -f "$1" "$2"
1468 }
1469
1470 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1471 # system-dependent things.
1472
1473 AVCODEC_COMPONENTS="
1474     bsfs
1475     decoders
1476     encoders
1477     hwaccels
1478     parsers
1479 "
1480
1481 AVDEVICE_COMPONENTS="
1482     indevs
1483     outdevs
1484 "
1485
1486 AVFILTER_COMPONENTS="
1487     filters
1488 "
1489
1490 AVFORMAT_COMPONENTS="
1491     demuxers
1492     muxers
1493     protocols
1494 "
1495
1496 COMPONENT_LIST="
1497     $AVCODEC_COMPONENTS
1498     $AVDEVICE_COMPONENTS
1499     $AVFILTER_COMPONENTS
1500     $AVFORMAT_COMPONENTS
1501 "
1502
1503 EXAMPLE_LIST="
1504     avio_dir_cmd_example
1505     avio_reading_example
1506     decode_audio_example
1507     decode_video_example
1508     demuxing_decoding_example
1509     encode_audio_example
1510     encode_video_example
1511     extract_mvs_example
1512     filter_audio_example
1513     filtering_audio_example
1514     filtering_video_example
1515     http_multiclient_example
1516     hw_decode_example
1517     metadata_example
1518     muxing_example
1519     qsvdec_example
1520     remuxing_example
1521     resampling_audio_example
1522     scaling_video_example
1523     transcode_aac_example
1524     transcoding_example
1525 "
1526
1527 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1528     alsa
1529     appkit
1530     avfoundation
1531     bzlib
1532     coreimage
1533     iconv
1534     libxcb
1535     libxcb_shm
1536     libxcb_shape
1537     libxcb_xfixes
1538     lzma
1539     schannel
1540     sdl2
1541     securetransport
1542     sndio
1543     xlib
1544     zlib
1545 "
1546
1547 EXTERNAL_LIBRARY_GPL_LIST="
1548     avisynth
1549     frei0r
1550     libcdio
1551     librubberband
1552     libvidstab
1553     libx264
1554     libx265
1555     libxavs
1556     libxvid
1557 "
1558
1559 EXTERNAL_LIBRARY_NONFREE_LIST="
1560     decklink
1561     libndi_newtek
1562     libfdk_aac
1563     openssl
1564 "
1565
1566 EXTERNAL_LIBRARY_VERSION3_LIST="
1567     gmp
1568     libopencore_amrnb
1569     libopencore_amrwb
1570     libvmaf
1571     libvo_amrwbenc
1572     rkmpp
1573 "
1574
1575 EXTERNAL_LIBRARY_GPLV3_LIST="
1576     libsmbclient
1577 "
1578
1579 EXTERNAL_LIBRARY_LIST="
1580     $EXTERNAL_LIBRARY_GPL_LIST
1581     $EXTERNAL_LIBRARY_NONFREE_LIST
1582     $EXTERNAL_LIBRARY_VERSION3_LIST
1583     $EXTERNAL_LIBRARY_GPLV3_LIST
1584     chromaprint
1585     gcrypt
1586     gnutls
1587     jni
1588     ladspa
1589     libass
1590     libbluray
1591     libbs2b
1592     libcaca
1593     libcelt
1594     libdc1394
1595     libdrm
1596     libflite
1597     libfontconfig
1598     libfreetype
1599     libfribidi
1600     libgme
1601     libgsm
1602     libiec61883
1603     libilbc
1604     libjack
1605     libkvazaar
1606     libmodplug
1607     libmp3lame
1608     libmysofa
1609     libopencv
1610     libopenh264
1611     libopenjpeg
1612     libopenmpt
1613     libopus
1614     libpulse
1615     librsvg
1616     librtmp
1617     libshine
1618     libsmbclient
1619     libsnappy
1620     libsoxr
1621     libspeex
1622     libssh
1623     libtesseract
1624     libtheora
1625     libtwolame
1626     libv4l2
1627     libvorbis
1628     libvpx
1629     libwavpack
1630     libwebp
1631     libxml2
1632     libzimg
1633     libzmq
1634     libzvbi
1635     lv2
1636     mediacodec
1637     openal
1638     opengl
1639 "
1640
1641 HWACCEL_AUTODETECT_LIBRARY_LIST="
1642     audiotoolbox
1643     crystalhd
1644     cuda
1645     cuvid
1646     d3d11va
1647     dxva2
1648     nvdec
1649     nvenc
1650     vaapi
1651     vdpau
1652     videotoolbox
1653     v4l2_m2m
1654     xvmc
1655 "
1656
1657 # catchall list of things that require external libs to link
1658 EXTRALIBS_LIST="
1659     cpu_init
1660     cws2fws
1661 "
1662
1663 HWACCEL_LIBRARY_NONFREE_LIST="
1664     cuda_sdk
1665     libnpp
1666 "
1667
1668 HWACCEL_LIBRARY_LIST="
1669     $HWACCEL_LIBRARY_NONFREE_LIST
1670     libmfx
1671     mmal
1672     omx
1673     opencl
1674 "
1675
1676 DOCUMENT_LIST="
1677     doc
1678     htmlpages
1679     manpages
1680     podpages
1681     txtpages
1682 "
1683
1684 FEATURE_LIST="
1685     ftrapv
1686     gray
1687     hardcoded_tables
1688     omx_rpi
1689     runtime_cpudetect
1690     safe_bitstream_reader
1691     shared
1692     small
1693     static
1694     swscale_alpha
1695 "
1696
1697 LIBRARY_LIST="
1698     avcodec
1699     avdevice
1700     avfilter
1701     avformat
1702     avresample
1703     avutil
1704     postproc
1705     swresample
1706     swscale
1707 "
1708
1709 LICENSE_LIST="
1710     gpl
1711     nonfree
1712     version3
1713 "
1714
1715 PROGRAM_LIST="
1716     ffplay
1717     ffprobe
1718     ffserver
1719     ffmpeg
1720 "
1721
1722 SUBSYSTEM_LIST="
1723     dct
1724     dwt
1725     error_resilience
1726     faan
1727     fast_unaligned
1728     fft
1729     lsp
1730     lzo
1731     mdct
1732     pixelutils
1733     network
1734     rdft
1735 "
1736
1737 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1738 CONFIG_LIST="
1739     $DOCUMENT_LIST
1740     $EXAMPLE_LIST
1741     $EXTERNAL_LIBRARY_LIST
1742     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1743     $HWACCEL_LIBRARY_LIST
1744     $HWACCEL_AUTODETECT_LIBRARY_LIST
1745     $FEATURE_LIST
1746     $LICENSE_LIST
1747     $LIBRARY_LIST
1748     $PROGRAM_LIST
1749     $SUBSYSTEM_LIST
1750     autodetect
1751     fontconfig
1752     linux_perf
1753     memory_poisoning
1754     neon_clobber_test
1755     ossfuzz
1756     pic
1757     thumb
1758     valgrind_backtrace
1759     xmm_clobber_test
1760     $COMPONENT_LIST
1761 "
1762
1763 THREADS_LIST="
1764     pthreads
1765     os2threads
1766     w32threads
1767 "
1768
1769 ATOMICS_LIST="
1770     atomics_gcc
1771     atomics_suncc
1772     atomics_win32
1773 "
1774
1775 AUTODETECT_LIBS="
1776     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1777     $HWACCEL_AUTODETECT_LIBRARY_LIST
1778     $THREADS_LIST
1779 "
1780
1781 ARCH_LIST="
1782     aarch64
1783     alpha
1784     arm
1785     avr32
1786     avr32_ap
1787     avr32_uc
1788     bfin
1789     ia64
1790     m68k
1791     mips
1792     mips64
1793     parisc
1794     ppc
1795     ppc64
1796     s390
1797     sh4
1798     sparc
1799     sparc64
1800     tilegx
1801     tilepro
1802     tomi
1803     x86
1804     x86_32
1805     x86_64
1806 "
1807
1808 ARCH_EXT_LIST_ARM="
1809     armv5te
1810     armv6
1811     armv6t2
1812     armv8
1813     neon
1814     vfp
1815     vfpv3
1816     setend
1817 "
1818
1819 ARCH_EXT_LIST_MIPS="
1820     mipsfpu
1821     mips32r2
1822     mips32r5
1823     mips64r2
1824     mips32r6
1825     mips64r6
1826     mipsdsp
1827     mipsdspr2
1828     msa
1829 "
1830
1831 ARCH_EXT_LIST_LOONGSON="
1832     loongson2
1833     loongson3
1834     mmi
1835 "
1836
1837 ARCH_EXT_LIST_X86_SIMD="
1838     aesni
1839     amd3dnow
1840     amd3dnowext
1841     avx
1842     avx2
1843     fma3
1844     fma4
1845     mmx
1846     mmxext
1847     sse
1848     sse2
1849     sse3
1850     sse4
1851     sse42
1852     ssse3
1853     xop
1854 "
1855
1856 ARCH_EXT_LIST_PPC="
1857     altivec
1858     dcbzl
1859     ldbrx
1860     power8
1861     ppc4xx
1862     vsx
1863 "
1864
1865 ARCH_EXT_LIST_X86="
1866     $ARCH_EXT_LIST_X86_SIMD
1867     cpunop
1868     i686
1869 "
1870
1871 ARCH_EXT_LIST="
1872     $ARCH_EXT_LIST_ARM
1873     $ARCH_EXT_LIST_PPC
1874     $ARCH_EXT_LIST_X86
1875     $ARCH_EXT_LIST_MIPS
1876     $ARCH_EXT_LIST_LOONGSON
1877 "
1878
1879 ARCH_FEATURES="
1880     aligned_stack
1881     fast_64bit
1882     fast_clz
1883     fast_cmov
1884     local_aligned
1885     simd_align_16
1886     simd_align_32
1887 "
1888
1889 BUILTIN_LIST="
1890     atomic_cas_ptr
1891     machine_rw_barrier
1892     MemoryBarrier
1893     mm_empty
1894     rdtsc
1895     sarestart
1896     sem_timedwait
1897     sync_val_compare_and_swap
1898 "
1899 HAVE_LIST_CMDLINE="
1900     inline_asm
1901     symver
1902     x86asm
1903 "
1904
1905 HAVE_LIST_PUB="
1906     bigendian
1907     fast_unaligned
1908 "
1909
1910 HEADERS_LIST="
1911     arpa_inet_h
1912     asm_types_h
1913     cdio_paranoia_h
1914     cdio_paranoia_paranoia_h
1915     cuda_h
1916     dispatch_dispatch_h
1917     dev_bktr_ioctl_bt848_h
1918     dev_bktr_ioctl_meteor_h
1919     dev_ic_bt8xx_h
1920     dev_video_bktr_ioctl_bt848_h
1921     dev_video_meteor_ioctl_meteor_h
1922     direct_h
1923     dirent_h
1924     dxgidebug_h
1925     dxva_h
1926     ES2_gl_h
1927     gsm_h
1928     io_h
1929     machine_ioctl_bt848_h
1930     machine_ioctl_meteor_h
1931     malloc_h
1932     opencv2_core_core_c_h
1933     OpenGL_gl3_h
1934     poll_h
1935     sys_param_h
1936     sys_resource_h
1937     sys_select_h
1938     sys_soundcard_h
1939     sys_time_h
1940     sys_un_h
1941     sys_videoio_h
1942     termios_h
1943     udplite_h
1944     unistd_h
1945     valgrind_valgrind_h
1946     windows_h
1947     winsock2_h
1948 "
1949
1950 INTRINSICS_LIST="
1951     intrinsics_neon
1952 "
1953
1954 COMPLEX_FUNCS="
1955     cabs
1956     cexp
1957 "
1958
1959 MATH_FUNCS="
1960     atanf
1961     atan2f
1962     cbrt
1963     cbrtf
1964     copysign
1965     cosf
1966     erf
1967     exp2
1968     exp2f
1969     expf
1970     hypot
1971     isfinite
1972     isinf
1973     isnan
1974     ldexpf
1975     llrint
1976     llrintf
1977     log2
1978     log2f
1979     log10f
1980     lrint
1981     lrintf
1982     powf
1983     rint
1984     round
1985     roundf
1986     sinf
1987     trunc
1988     truncf
1989 "
1990
1991 SYSTEM_FEATURES="
1992     atomics_native
1993     dos_paths
1994     libc_msvcrt
1995     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1996     section_data_rel_ro
1997     threads
1998     uwp
1999     winrt
2000 "
2001
2002 SYSTEM_FUNCS="
2003     access
2004     aligned_malloc
2005     arc4random
2006     clock_gettime
2007     closesocket
2008     CommandLineToArgvW
2009     fcntl
2010     getaddrinfo
2011     gethrtime
2012     getopt
2013     GetProcessAffinityMask
2014     GetProcessMemoryInfo
2015     GetProcessTimes
2016     getrusage
2017     GetSystemTimeAsFileTime
2018     gettimeofday
2019     glob
2020     glXGetProcAddress
2021     gmtime_r
2022     inet_aton
2023     isatty
2024     kbhit
2025     localtime_r
2026     lstat
2027     lzo1x_999_compress
2028     mach_absolute_time
2029     MapViewOfFile
2030     memalign
2031     mkstemp
2032     mmap
2033     mprotect
2034     nanosleep
2035     PeekNamedPipe
2036     posix_memalign
2037     pthread_cancel
2038     sched_getaffinity
2039     SecItemImport
2040     SetConsoleTextAttribute
2041     SetConsoleCtrlHandler
2042     setmode
2043     setrlimit
2044     Sleep
2045     strerror_r
2046     sysconf
2047     sysctl
2048     usleep
2049     UTGetOSTypeFromString
2050     VirtualAlloc
2051     wglGetProcAddress
2052 "
2053
2054 SYSTEM_LIBRARIES="
2055     vaapi_drm
2056     vaapi_x11
2057     vdpau_x11
2058     wincrypt
2059 "
2060
2061 TOOLCHAIN_FEATURES="
2062     as_arch_directive
2063     as_fpu_directive
2064     as_func
2065     as_object_arch
2066     asm_mod_q
2067     blocks_extension
2068     ebp_available
2069     ebx_available
2070     gnu_as
2071     gnu_windres
2072     ibm_asm
2073     inline_asm_direct_symbol_refs
2074     inline_asm_labels
2075     inline_asm_nonlocal_labels
2076     pragma_deprecated
2077     rsync_contimeout
2078     symver_asm_label
2079     symver_gnu_asm
2080     vfp_args
2081     xform_asm
2082     xmm_clobbers
2083 "
2084
2085 TYPES_LIST="
2086     CONDITION_VARIABLE_Ptr
2087     kCMVideoCodecType_HEVC
2088     socklen_t
2089     struct_addrinfo
2090     struct_group_source_req
2091     struct_ip_mreq_source
2092     struct_ipv6_mreq
2093     struct_msghdr_msg_flags
2094     struct_pollfd
2095     struct_rusage_ru_maxrss
2096     struct_sctp_event_subscribe
2097     struct_sockaddr_in6
2098     struct_sockaddr_sa_len
2099     struct_sockaddr_storage
2100     struct_stat_st_mtim_tv_nsec
2101     struct_v4l2_frmivalenum_discrete
2102 "
2103
2104 HAVE_LIST="
2105     $ARCH_EXT_LIST
2106     $(add_suffix _external $ARCH_EXT_LIST)
2107     $(add_suffix _inline   $ARCH_EXT_LIST)
2108     $ARCH_FEATURES
2109     $ATOMICS_LIST
2110     $BUILTIN_LIST
2111     $COMPLEX_FUNCS
2112     $HAVE_LIST_CMDLINE
2113     $HAVE_LIST_PUB
2114     $HEADERS_LIST
2115     $INTRINSICS_LIST
2116     $MATH_FUNCS
2117     $SYSTEM_FEATURES
2118     $SYSTEM_FUNCS
2119     $SYSTEM_LIBRARIES
2120     $THREADS_LIST
2121     $TOOLCHAIN_FEATURES
2122     $TYPES_LIST
2123     makeinfo
2124     makeinfo_html
2125     opencl_d3d11
2126     opencl_drm_arm
2127     opencl_dxva2
2128     opencl_vaapi_beignet
2129     opencl_vaapi_intel_media
2130     perl
2131     pod2man
2132     texi2html
2133 "
2134
2135 # options emitted with CONFIG_ prefix but not available on the command line
2136 CONFIG_EXTRA="
2137     aandcttables
2138     ac3dsp
2139     adts_header
2140     audio_frame_queue
2141     audiodsp
2142     blockdsp
2143     bswapdsp
2144     cabac
2145     cbs
2146     cbs_h264
2147     cbs_h265
2148     cbs_mpeg2
2149     dirac_parse
2150     dvprofile
2151     exif
2152     faandct
2153     faanidct
2154     fdctdsp
2155     flacdsp
2156     fmtconvert
2157     frame_thread_encoder
2158     g722dsp
2159     golomb
2160     gplv3
2161     h263dsp
2162     h264chroma
2163     h264dsp
2164     h264parse
2165     h264pred
2166     h264qpel
2167     hevcparse
2168     hpeldsp
2169     huffman
2170     huffyuvdsp
2171     huffyuvencdsp
2172     idctdsp
2173     iirfilter
2174     mdct15
2175     intrax8
2176     iso_media
2177     ividsp
2178     jpegtables
2179     lgplv3
2180     libx262
2181     llauddsp
2182     llviddsp
2183     llvidencdsp
2184     lpc
2185     lzf
2186     me_cmp
2187     mpeg_er
2188     mpegaudio
2189     mpegaudiodsp
2190     mpegaudioheader
2191     mpegvideo
2192     mpegvideoenc
2193     mss34dsp
2194     pixblockdsp
2195     qpeldsp
2196     qsv
2197     qsvdec
2198     qsvenc
2199     qsvvpp
2200     rangecoder
2201     riffdec
2202     riffenc
2203     rtpdec
2204     rtpenc_chain
2205     rv34dsp
2206     sinewin
2207     snappy
2208     srtp
2209     startcode
2210     texturedsp
2211     texturedspenc
2212     tpeldsp
2213     vaapi_1
2214     vaapi_encode
2215     vc1dsp
2216     videodsp
2217     vp3dsp
2218     vp56dsp
2219     vp8dsp
2220     wma_freqs
2221     wmv2dsp
2222 "
2223
2224 CMDLINE_SELECT="
2225     $ARCH_EXT_LIST
2226     $CONFIG_LIST
2227     $HAVE_LIST_CMDLINE
2228     $THREADS_LIST
2229     asm
2230     cross_compile
2231     debug
2232     extra_warnings
2233     logging
2234     lto
2235     optimizations
2236     rpath
2237     stripping
2238 "
2239
2240 PATHS_LIST="
2241     bindir
2242     datadir
2243     docdir
2244     incdir
2245     libdir
2246     mandir
2247     pkgconfigdir
2248     prefix
2249     shlibdir
2250     install_name_dir
2251 "
2252
2253 CMDLINE_SET="
2254     $PATHS_LIST
2255     ar
2256     arch
2257     as
2258     assert_level
2259     build_suffix
2260     cc
2261     objcc
2262     cpu
2263     cross_prefix
2264     custom_allocator
2265     cxx
2266     dep_cc
2267     doxygen
2268     env
2269     extra_version
2270     gas
2271     host_cc
2272     host_cflags
2273     host_extralibs
2274     host_ld
2275     host_ldflags
2276     host_os
2277     ignore_tests
2278     install
2279     ld
2280     ln_s
2281     logfile
2282     malloc_prefix
2283     nm
2284     optflags
2285     nvccflags
2286     pkg_config
2287     pkg_config_flags
2288     progs_suffix
2289     random_seed
2290     ranlib
2291     samples
2292     strip
2293     sws_max_filter_size
2294     sysinclude
2295     sysroot
2296     target_exec
2297     target_os
2298     target_path
2299     target_samples
2300     tempprefix
2301     toolchain
2302     valgrind
2303     x86asmexe
2304 "
2305
2306 CMDLINE_APPEND="
2307     extra_cflags
2308     extra_cxxflags
2309     extra_objcflags
2310     host_cppflags
2311 "
2312
2313 # code dependency declarations
2314
2315 # architecture extensions
2316
2317 armv5te_deps="arm"
2318 armv6_deps="arm"
2319 armv6t2_deps="arm"
2320 armv8_deps="aarch64"
2321 neon_deps_any="aarch64 arm"
2322 intrinsics_neon_deps="neon"
2323 vfp_deps_any="aarch64 arm"
2324 vfpv3_deps="vfp"
2325 setend_deps="arm"
2326
2327 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2328
2329 altivec_deps="ppc"
2330 dcbzl_deps="ppc"
2331 ldbrx_deps="ppc"
2332 ppc4xx_deps="ppc"
2333 vsx_deps="altivec"
2334 power8_deps="vsx"
2335
2336 loongson2_deps="mips"
2337 loongson3_deps="mips"
2338 mips32r2_deps="mips"
2339 mips32r5_deps="mips"
2340 mips32r6_deps="mips"
2341 mips64r2_deps="mips"
2342 mips64r6_deps="mips"
2343 mipsfpu_deps="mips"
2344 mipsdsp_deps="mips"
2345 mipsdspr2_deps="mips"
2346 mmi_deps="mips"
2347 msa_deps="mipsfpu"
2348
2349 cpunop_deps="i686"
2350 x86_64_select="i686"
2351 x86_64_suggest="fast_cmov"
2352
2353 amd3dnow_deps="mmx"
2354 amd3dnowext_deps="amd3dnow"
2355 i686_deps="x86"
2356 mmx_deps="x86"
2357 mmxext_deps="mmx"
2358 sse_deps="mmxext"
2359 sse2_deps="sse"
2360 sse3_deps="sse2"
2361 ssse3_deps="sse3"
2362 sse4_deps="ssse3"
2363 sse42_deps="sse4"
2364 aesni_deps="sse42"
2365 avx_deps="sse42"
2366 xop_deps="avx"
2367 fma3_deps="avx"
2368 fma4_deps="avx"
2369 avx2_deps="avx"
2370
2371 mmx_external_deps="x86asm"
2372 mmx_inline_deps="inline_asm x86"
2373 mmx_suggest="mmx_external mmx_inline"
2374
2375 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2376     eval dep=\$${ext}_deps
2377     eval ${ext}_external_deps='"${dep}_external"'
2378     eval ${ext}_inline_deps='"${dep}_inline"'
2379     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2380 done
2381
2382 aligned_stack_if_any="aarch64 ppc x86"
2383 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2384 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2385 fast_unaligned_if_any="aarch64 ppc x86"
2386 simd_align_16_if_any="altivec neon sse"
2387 simd_align_32_if_any="avx"
2388
2389 # system capabilities
2390 symver_if_any="symver_asm_label symver_gnu_asm"
2391 valgrind_backtrace_conflict="optimizations"
2392 valgrind_backtrace_deps="valgrind_valgrind_h"
2393
2394 # threading support
2395 atomics_gcc_if="sync_val_compare_and_swap"
2396 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2397 atomics_win32_if="MemoryBarrier"
2398 atomics_native_if_any="$ATOMICS_LIST"
2399 w32threads_deps="atomics_native"
2400 threads_if_any="$THREADS_LIST"
2401
2402 # subsystems
2403 cbs_h264_select="cbs golomb"
2404 cbs_h265_select="cbs golomb"
2405 cbs_mpeg2_select="cbs"
2406 dct_select="rdft"
2407 dirac_parse_select="golomb"
2408 error_resilience_select="me_cmp"
2409 faandct_deps="faan"
2410 faandct_select="fdctdsp"
2411 faanidct_deps="faan"
2412 faanidct_select="idctdsp"
2413 h264dsp_select="startcode"
2414 hevcparse_select="golomb"
2415 frame_thread_encoder_deps="encoders threads"
2416 intrax8_select="blockdsp idctdsp"
2417 mdct_select="fft"
2418 mdct15_select="fft"
2419 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2420 mpeg_er_select="error_resilience"
2421 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2422 mpegaudiodsp_select="dct"
2423 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2424 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2425 vc1dsp_select="h264chroma qpeldsp startcode"
2426 rdft_select="fft"
2427
2428 # decoders / encoders
2429 aac_decoder_select="adts_header mdct15 mdct sinewin"
2430 aac_fixed_decoder_select="mdct sinewin"
2431 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2432 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2433 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2434 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2435 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2436 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2437 adpcm_g722_decoder_select="g722dsp"
2438 adpcm_g722_encoder_select="g722dsp"
2439 aic_decoder_select="golomb idctdsp"
2440 alac_encoder_select="lpc"
2441 als_decoder_select="bswapdsp"
2442 amrnb_decoder_select="lsp"
2443 amrwb_decoder_select="lsp"
2444 amv_decoder_select="sp5x_decoder exif"
2445 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2446 ape_decoder_select="bswapdsp llauddsp"
2447 apng_decoder_deps="zlib"
2448 apng_encoder_deps="zlib"
2449 apng_encoder_select="llvidencdsp"
2450 aptx_decoder_select="audio_frame_queue"
2451 aptx_encoder_select="audio_frame_queue"
2452 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2453 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2454 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2455 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2456 atrac1_decoder_select="mdct sinewin"
2457 atrac3_decoder_select="mdct"
2458 atrac3p_decoder_select="mdct sinewin"
2459 avrn_decoder_select="exif jpegtables"
2460 bink_decoder_select="blockdsp hpeldsp"
2461 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2462 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2463 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2464 clearvideo_decoder_select="idctdsp"
2465 cllc_decoder_select="bswapdsp"
2466 comfortnoise_encoder_select="lpc"
2467 cook_decoder_select="audiodsp mdct sinewin"
2468 cscd_decoder_select="lzo"
2469 cscd_decoder_suggest="zlib"
2470 dca_decoder_select="mdct"
2471 dds_decoder_select="texturedsp"
2472 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2473 dnxhd_decoder_select="blockdsp idctdsp"
2474 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2475 dolby_e_decoder_select="mdct"
2476 dvvideo_decoder_select="dvprofile idctdsp"
2477 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2478 dxa_decoder_deps="zlib"
2479 dxv_decoder_select="lzf texturedsp"
2480 eac3_decoder_select="ac3_decoder"
2481 eac3_encoder_select="ac3_encoder"
2482 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2483 eatgq_decoder_select="aandcttables"
2484 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2485 exr_decoder_deps="zlib"
2486 ffv1_decoder_select="rangecoder"
2487 ffv1_encoder_select="rangecoder"
2488 ffvhuff_decoder_select="huffyuv_decoder"
2489 ffvhuff_encoder_select="huffyuv_encoder"
2490 fic_decoder_select="golomb"
2491 flac_decoder_select="flacdsp"
2492 flac_encoder_select="bswapdsp flacdsp lpc"
2493 flashsv2_decoder_deps="zlib"
2494 flashsv2_encoder_deps="zlib"
2495 flashsv_decoder_deps="zlib"
2496 flashsv_encoder_deps="zlib"
2497 flv_decoder_select="h263_decoder"
2498 flv_encoder_select="h263_encoder"
2499 fourxm_decoder_select="blockdsp bswapdsp"
2500 fraps_decoder_select="bswapdsp huffman"
2501 g2m_decoder_deps="zlib"
2502 g2m_decoder_select="blockdsp idctdsp jpegtables"
2503 g729_decoder_select="audiodsp"
2504 h261_decoder_select="mpegvideo"
2505 h261_encoder_select="aandcttables mpegvideoenc"
2506 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2507 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2508 h263i_decoder_select="h263_decoder"
2509 h263p_decoder_select="h263_decoder"
2510 h263p_encoder_select="h263_encoder"
2511 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2512 h264_decoder_suggest="error_resilience"
2513 hap_decoder_select="snappy texturedsp"
2514 hap_encoder_deps="libsnappy"
2515 hap_encoder_select="texturedspenc"
2516 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2517 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2518 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2519 iac_decoder_select="imc_decoder"
2520 imc_decoder_select="bswapdsp fft mdct sinewin"
2521 indeo3_decoder_select="hpeldsp"
2522 indeo4_decoder_select="ividsp"
2523 indeo5_decoder_select="ividsp"
2524 interplay_video_decoder_select="hpeldsp"
2525 jpegls_decoder_select="mjpeg_decoder"
2526 jv_decoder_select="blockdsp"
2527 lagarith_decoder_select="llviddsp"
2528 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2529 magicyuv_decoder_select="llviddsp"
2530 magicyuv_encoder_select="llvidencdsp"
2531 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2532 metasound_decoder_select="lsp mdct sinewin"
2533 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2534 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2535 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2536 mjpegb_decoder_select="mjpeg_decoder"
2537 mlp_decoder_select="mlp_parser"
2538 mlp_encoder_select="lpc"
2539 motionpixels_decoder_select="bswapdsp"
2540 mp1_decoder_select="mpegaudio"
2541 mp1float_decoder_select="mpegaudio"
2542 mp2_decoder_select="mpegaudio"
2543 mp2float_decoder_select="mpegaudio"
2544 mp3_decoder_select="mpegaudio"
2545 mp3adu_decoder_select="mpegaudio"
2546 mp3adufloat_decoder_select="mpegaudio"
2547 mp3float_decoder_select="mpegaudio"
2548 mp3on4_decoder_select="mpegaudio"
2549 mp3on4float_decoder_select="mpegaudio"
2550 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2551 mpc8_decoder_select="mpegaudiodsp"
2552 mpegvideo_decoder_select="mpegvideo"
2553 mpeg1video_decoder_select="mpegvideo"
2554 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2555 mpeg2video_decoder_select="mpegvideo"
2556 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2557 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2558 mpeg4_encoder_select="h263_encoder"
2559 msa1_decoder_select="mss34dsp"
2560 mscc_decoder_deps="zlib"
2561 msmpeg4v1_decoder_select="h263_decoder"
2562 msmpeg4v2_decoder_select="h263_decoder"
2563 msmpeg4v2_encoder_select="h263_encoder"
2564 msmpeg4v3_decoder_select="h263_decoder"
2565 msmpeg4v3_encoder_select="h263_encoder"
2566 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2567 mts2_decoder_select="mss34dsp"
2568 mxpeg_decoder_select="mjpeg_decoder"
2569 nellymoser_decoder_select="mdct sinewin"
2570 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2571 nuv_decoder_select="idctdsp lzo"
2572 on2avc_decoder_select="mdct"
2573 opus_decoder_deps="swresample"
2574 opus_decoder_select="mdct15"
2575 opus_encoder_select="audio_frame_queue mdct15"
2576 png_decoder_deps="zlib"
2577 png_encoder_deps="zlib"
2578 png_encoder_select="llvidencdsp"
2579 prores_decoder_select="blockdsp idctdsp"
2580 prores_encoder_select="fdctdsp"
2581 qcelp_decoder_select="lsp"
2582 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2583 ra_144_decoder_select="audiodsp"
2584 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2585 ralf_decoder_select="golomb"
2586 rawvideo_decoder_select="bswapdsp"
2587 rscc_decoder_deps="zlib"
2588 rtjpeg_decoder_select="me_cmp"
2589 rv10_decoder_select="h263_decoder"
2590 rv10_encoder_select="h263_encoder"
2591 rv20_decoder_select="h263_decoder"
2592 rv20_encoder_select="h263_encoder"
2593 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2594 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2595 screenpresso_decoder_deps="zlib"
2596 shorten_decoder_select="bswapdsp"
2597 sipr_decoder_select="lsp"
2598 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2599 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2600 sonic_decoder_select="golomb rangecoder"
2601 sonic_encoder_select="golomb rangecoder"
2602 sonic_ls_encoder_select="golomb rangecoder"
2603 sp5x_decoder_select="mjpeg_decoder"
2604 srgc_decoder_deps="zlib"
2605 svq1_decoder_select="hpeldsp"
2606 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2607 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2608 svq3_decoder_suggest="zlib"
2609 tak_decoder_select="audiodsp"
2610 tdsc_decoder_deps="zlib"
2611 tdsc_decoder_select="mjpeg_decoder"
2612 theora_decoder_select="vp3_decoder"
2613 thp_decoder_select="mjpeg_decoder"
2614 tiff_decoder_suggest="zlib lzma"
2615 tiff_encoder_suggest="zlib"
2616 truehd_decoder_select="mlp_parser"
2617 truehd_encoder_select="lpc"
2618 truemotion2_decoder_select="bswapdsp"
2619 truespeech_decoder_select="bswapdsp"
2620 tscc_decoder_deps="zlib"
2621 twinvq_decoder_select="mdct lsp sinewin"
2622 txd_decoder_select="texturedsp"
2623 utvideo_decoder_select="bswapdsp llviddsp"
2624 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2625 vble_decoder_select="llviddsp"
2626 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2627 vc1image_decoder_select="vc1_decoder"
2628 vorbis_decoder_select="mdct"
2629 vorbis_encoder_select="mdct"
2630 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2631 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2632 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2633 vp6a_decoder_select="vp6_decoder"
2634 vp6f_decoder_select="vp6_decoder"
2635 vp7_decoder_select="h264pred videodsp vp8dsp"
2636 vp8_decoder_select="h264pred videodsp vp8dsp"
2637 vp9_decoder_select="videodsp vp9_parser"
2638 webp_decoder_select="vp8_decoder exif"
2639 wmalossless_decoder_select="llauddsp"
2640 wmapro_decoder_select="mdct sinewin wma_freqs"
2641 wmav1_decoder_select="mdct sinewin wma_freqs"
2642 wmav1_encoder_select="mdct sinewin wma_freqs"
2643 wmav2_decoder_select="mdct sinewin wma_freqs"
2644 wmav2_encoder_select="mdct sinewin wma_freqs"
2645 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2646 wmv1_decoder_select="h263_decoder"
2647 wmv1_encoder_select="h263_encoder"
2648 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2649 wmv2_encoder_select="h263_encoder wmv2dsp"
2650 wmv3_decoder_select="vc1_decoder"
2651 wmv3image_decoder_select="wmv3_decoder"
2652 xma1_decoder_select="wmapro_decoder"
2653 xma2_decoder_select="wmapro_decoder"
2654 zerocodec_decoder_deps="zlib"
2655 zlib_decoder_deps="zlib"
2656 zlib_encoder_deps="zlib"
2657 zmbv_decoder_deps="zlib"
2658 zmbv_encoder_deps="zlib"
2659
2660 # hardware accelerators
2661 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2662 cuda_deps_any="libdl LoadLibrary"
2663 cuvid_deps="cuda"
2664 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2665 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2666 nvdec_deps="cuda"
2667 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2668 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2669 xvmc_deps="X11_extensions_XvMClib_h"
2670
2671 h263_vaapi_hwaccel_deps="vaapi"
2672 h263_vaapi_hwaccel_select="h263_decoder"
2673 h263_videotoolbox_hwaccel_deps="videotoolbox"
2674 h263_videotoolbox_hwaccel_select="h263_decoder"
2675 h264_d3d11va_hwaccel_deps="d3d11va"
2676 h264_d3d11va_hwaccel_select="h264_decoder"
2677 h264_d3d11va2_hwaccel_deps="d3d11va"
2678 h264_d3d11va2_hwaccel_select="h264_decoder"
2679 h264_dxva2_hwaccel_deps="dxva2"
2680 h264_dxva2_hwaccel_select="h264_decoder"
2681 h264_nvdec_hwaccel_deps="nvdec"
2682 h264_nvdec_hwaccel_select="h264_decoder"
2683 h264_vaapi_hwaccel_deps="vaapi"
2684 h264_vaapi_hwaccel_select="h264_decoder"
2685 h264_vdpau_hwaccel_deps="vdpau"
2686 h264_vdpau_hwaccel_select="h264_decoder"
2687 h264_videotoolbox_hwaccel_deps="videotoolbox"
2688 h264_videotoolbox_hwaccel_select="h264_decoder"
2689 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2690 hevc_d3d11va_hwaccel_select="hevc_decoder"
2691 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2692 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2693 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2694 hevc_dxva2_hwaccel_select="hevc_decoder"
2695 hevc_nvdec_hwaccel_deps="nvdec"
2696 hevc_nvdec_hwaccel_select="hevc_decoder"
2697 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2698 hevc_vaapi_hwaccel_select="hevc_decoder"
2699 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2700 hevc_vdpau_hwaccel_select="hevc_decoder"
2701 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2702 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2703 mpeg_xvmc_hwaccel_deps="xvmc"
2704 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2705 mpeg1_nvdec_hwaccel_deps="nvdec"
2706 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2707 mpeg1_vdpau_hwaccel_deps="vdpau"
2708 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2709 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2710 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2711 mpeg1_xvmc_hwaccel_deps="xvmc"
2712 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2713 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2714 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2715 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2716 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2717 mpeg2_dxva2_hwaccel_deps="dxva2"
2718 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2719 mpeg2_nvdec_hwaccel_deps="nvdec"
2720 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2721 mpeg2_vaapi_hwaccel_deps="vaapi"
2722 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2723 mpeg2_vdpau_hwaccel_deps="vdpau"
2724 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2725 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2726 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2727 mpeg2_xvmc_hwaccel_deps="xvmc"
2728 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2729 mpeg4_nvdec_hwaccel_deps="nvdec"
2730 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2731 mpeg4_vaapi_hwaccel_deps="vaapi"
2732 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2733 mpeg4_vdpau_hwaccel_deps="vdpau"
2734 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2735 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2736 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2737 vc1_d3d11va_hwaccel_deps="d3d11va"
2738 vc1_d3d11va_hwaccel_select="vc1_decoder"
2739 vc1_d3d11va2_hwaccel_deps="d3d11va"
2740 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2741 vc1_dxva2_hwaccel_deps="dxva2"
2742 vc1_dxva2_hwaccel_select="vc1_decoder"
2743 vc1_nvdec_hwaccel_deps="nvdec"
2744 vc1_nvdec_hwaccel_select="vc1_decoder"
2745 vc1_vaapi_hwaccel_deps="vaapi"
2746 vc1_vaapi_hwaccel_select="vc1_decoder"
2747 vc1_vdpau_hwaccel_deps="vdpau"
2748 vc1_vdpau_hwaccel_select="vc1_decoder"
2749 vp8_nvdec_hwaccel_deps="nvdec"
2750 vp8_nvdec_hwaccel_select="vp8_decoder"
2751 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2752 vp8_vaapi_hwaccel_select="vp8_decoder"
2753 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2754 vp9_d3d11va_hwaccel_select="vp9_decoder"
2755 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2756 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2757 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2758 vp9_dxva2_hwaccel_select="vp9_decoder"
2759 vp9_nvdec_hwaccel_deps="nvdec"
2760 vp9_nvdec_hwaccel_select="vp9_decoder"
2761 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2762 vp9_vaapi_hwaccel_select="vp9_decoder"
2763 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2764 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2765 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2766 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2767 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2768 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2769
2770 # hardware-accelerated codecs
2771 omx_deps="libdl pthreads"
2772 omx_rpi_select="omx"
2773 qsv_deps="libmfx"
2774 qsvdec_select="qsv"
2775 qsvenc_select="qsv"
2776 qsvvpp_select="qsv"
2777 vaapi_encode_deps="vaapi"
2778 v4l2_m2m_deps_any="linux_videodev2_h"
2779
2780 hwupload_cuda_filter_deps="cuda"
2781 scale_npp_filter_deps="cuda libnpp"
2782 scale_cuda_filter_deps="cuda_sdk"
2783 thumbnail_cuda_filter_deps="cuda_sdk"
2784
2785 nvenc_deps="cuda"
2786 nvenc_deps_any="libdl LoadLibrary"
2787 nvenc_encoder_deps="nvenc"
2788
2789 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2790 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2791 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2792 h264_cuvid_decoder_deps="cuvid"
2793 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2794 h264_mediacodec_decoder_deps="mediacodec"
2795 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2796 h264_mmal_decoder_deps="mmal"
2797 h264_nvenc_encoder_deps="nvenc"
2798 h264_omx_encoder_deps="omx"
2799 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2800 h264_qsv_encoder_select="qsvenc"
2801 h264_rkmpp_decoder_deps="rkmpp"
2802 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2803 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2804 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2805 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2806 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2807 hevc_cuvid_decoder_deps="cuvid"
2808 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2809 hevc_mediacodec_decoder_deps="mediacodec"
2810 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2811 hevc_nvenc_encoder_deps="nvenc"
2812 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2813 hevc_qsv_encoder_select="hevcparse qsvenc"
2814 hevc_rkmpp_decoder_deps="rkmpp"
2815 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2816 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2817 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2818 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2819 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2820 mjpeg_cuvid_decoder_deps="cuvid"
2821 mjpeg_qsv_encoder_deps="libmfx"
2822 mjpeg_qsv_encoder_select="qsvenc"
2823 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2824 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2825 mpeg1_cuvid_decoder_deps="cuvid"
2826 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2827 mpeg2_crystalhd_decoder_select="crystalhd"
2828 mpeg2_cuvid_decoder_deps="cuvid"
2829 mpeg2_mmal_decoder_deps="mmal"
2830 mpeg2_mediacodec_decoder_deps="mediacodec"
2831 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2832 mpeg2_qsv_encoder_select="qsvenc"
2833 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2834 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2835 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2836 mpeg4_crystalhd_decoder_select="crystalhd"
2837 mpeg4_cuvid_decoder_deps="cuvid"
2838 mpeg4_mediacodec_decoder_deps="mediacodec"
2839 mpeg4_mmal_decoder_deps="mmal"
2840 mpeg4_omx_encoder_deps="omx"
2841 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2842 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2843 msmpeg4_crystalhd_decoder_select="crystalhd"
2844 nvenc_h264_encoder_select="h264_nvenc_encoder"
2845 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2846 vc1_crystalhd_decoder_select="crystalhd"
2847 vc1_cuvid_decoder_deps="cuvid"
2848 vc1_mmal_decoder_deps="mmal"
2849 vc1_qsv_decoder_select="qsvdec vc1_parser"
2850 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2851 vp8_cuvid_decoder_deps="cuvid"
2852 vp8_mediacodec_decoder_deps="mediacodec"
2853 vp8_qsv_decoder_select="qsvdec vp8_parser"
2854 vp8_rkmpp_decoder_deps="rkmpp"
2855 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2856 vp8_vaapi_encoder_select="vaapi_encode"
2857 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2858 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2859 vp9_cuvid_decoder_deps="cuvid"
2860 vp9_mediacodec_decoder_deps="mediacodec"
2861 vp9_rkmpp_decoder_deps="rkmpp"
2862 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2863 vp9_vaapi_encoder_select="vaapi_encode"
2864 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2865 wmv3_crystalhd_decoder_select="crystalhd"
2866
2867 # parsers
2868 aac_parser_select="adts_header"
2869 h264_parser_select="golomb h264dsp h264parse"
2870 hevc_parser_select="hevcparse"
2871 mpegaudio_parser_select="mpegaudioheader"
2872 mpegvideo_parser_select="mpegvideo"
2873 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2874 vc1_parser_select="vc1dsp"
2875
2876 # bitstream_filters
2877 aac_adtstoasc_bsf_select="adts_header"
2878 h264_metadata_bsf_select="cbs_h264"
2879 h264_redundant_pps_bsf_select="cbs_h264"
2880 hevc_metadata_bsf_select="cbs_h265"
2881 mjpeg2jpeg_bsf_select="jpegtables"
2882 mpeg2_metadata_bsf_select="cbs_mpeg2"
2883 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2884
2885 # external libraries
2886 aac_at_decoder_deps="audiotoolbox"
2887 ac3_at_decoder_deps="audiotoolbox"
2888 ac3_at_decoder_select="ac3_parser"
2889 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2890 alac_at_decoder_deps="audiotoolbox"
2891 amr_nb_at_decoder_deps="audiotoolbox"
2892 avisynth_deps_any="libdl LoadLibrary"
2893 avisynth_demuxer_deps="avisynth"
2894 avisynth_demuxer_select="riffdec"
2895 eac3_at_decoder_deps="audiotoolbox"
2896 eac3_at_decoder_select="ac3_parser"
2897 gsm_ms_at_decoder_deps="audiotoolbox"
2898 ilbc_at_decoder_deps="audiotoolbox"
2899 mp1_at_decoder_deps="audiotoolbox"
2900 mp2_at_decoder_deps="audiotoolbox"
2901 mp3_at_decoder_deps="audiotoolbox"
2902 mp1_at_decoder_select="mpegaudioheader"
2903 mp2_at_decoder_select="mpegaudioheader"
2904 mp3_at_decoder_select="mpegaudioheader"
2905 pcm_alaw_at_decoder_deps="audiotoolbox"
2906 pcm_mulaw_at_decoder_deps="audiotoolbox"
2907 qdmc_at_decoder_deps="audiotoolbox"
2908 qdm2_at_decoder_deps="audiotoolbox"
2909 aac_at_encoder_deps="audiotoolbox"
2910 aac_at_encoder_select="audio_frame_queue"
2911 alac_at_encoder_deps="audiotoolbox"
2912 alac_at_encoder_select="audio_frame_queue"
2913 ilbc_at_encoder_deps="audiotoolbox"
2914 ilbc_at_encoder_select="audio_frame_queue"
2915 pcm_alaw_at_encoder_deps="audiotoolbox"
2916 pcm_alaw_at_encoder_select="audio_frame_queue"
2917 pcm_mulaw_at_encoder_deps="audiotoolbox"
2918 pcm_mulaw_at_encoder_select="audio_frame_queue"
2919 chromaprint_muxer_deps="chromaprint"
2920 h264_videotoolbox_encoder_deps="pthreads"
2921 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2922 hevc_videotoolbox_encoder_deps="pthreads"
2923 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
2924 libcelt_decoder_deps="libcelt"
2925 libfdk_aac_decoder_deps="libfdk_aac"
2926 libfdk_aac_encoder_deps="libfdk_aac"
2927 libfdk_aac_encoder_select="audio_frame_queue"
2928 libgme_demuxer_deps="libgme"
2929 libgsm_decoder_deps="libgsm"
2930 libgsm_encoder_deps="libgsm"
2931 libgsm_ms_decoder_deps="libgsm"
2932 libgsm_ms_encoder_deps="libgsm"
2933 libilbc_decoder_deps="libilbc"
2934 libilbc_encoder_deps="libilbc"
2935 libkvazaar_encoder_deps="libkvazaar"
2936 libmodplug_demuxer_deps="libmodplug"
2937 libmp3lame_encoder_deps="libmp3lame"
2938 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2939 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2940 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2941 libopencore_amrnb_encoder_select="audio_frame_queue"
2942 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2943 libopenh264_decoder_deps="libopenh264"
2944 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2945 libopenh264_encoder_deps="libopenh264"
2946 libopenjpeg_decoder_deps="libopenjpeg"
2947 libopenjpeg_encoder_deps="libopenjpeg"
2948 libopenmpt_demuxer_deps="libopenmpt"
2949 libopus_decoder_deps="libopus"
2950 libopus_encoder_deps="libopus"
2951 libopus_encoder_select="audio_frame_queue"
2952 librsvg_decoder_deps="librsvg"
2953 libshine_encoder_deps="libshine"
2954 libshine_encoder_select="audio_frame_queue"
2955 libspeex_decoder_deps="libspeex"
2956 libspeex_encoder_deps="libspeex"
2957 libspeex_encoder_select="audio_frame_queue"
2958 libtheora_encoder_deps="libtheora"
2959 libtwolame_encoder_deps="libtwolame"
2960 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2961 libvorbis_decoder_deps="libvorbis"
2962 libvorbis_encoder_deps="libvorbis libvorbisenc"
2963 libvorbis_encoder_select="audio_frame_queue"
2964 libvpx_vp8_decoder_deps="libvpx"
2965 libvpx_vp8_encoder_deps="libvpx"
2966 libvpx_vp9_decoder_deps="libvpx"
2967 libvpx_vp9_encoder_deps="libvpx"
2968 libwavpack_encoder_deps="libwavpack"
2969 libwavpack_encoder_select="audio_frame_queue"
2970 libwebp_encoder_deps="libwebp"
2971 libwebp_anim_encoder_deps="libwebp"
2972 libx262_encoder_deps="libx262"
2973 libx264_encoder_deps="libx264"
2974 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2975 libx264rgb_encoder_select="libx264_encoder"
2976 libx265_encoder_deps="libx265"
2977 libxavs_encoder_deps="libxavs"
2978 libxvid_encoder_deps="libxvid"
2979 libzvbi_teletext_decoder_deps="libzvbi"
2980 videotoolbox_suggest="coreservices"
2981 videotoolbox_deps="corefoundation coremedia corevideo"
2982 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2983
2984 # demuxers / muxers
2985 ac3_demuxer_select="ac3_parser"
2986 aiff_muxer_select="iso_media"
2987 asf_demuxer_select="riffdec"
2988 asf_o_demuxer_select="riffdec"
2989 asf_muxer_select="riffenc"
2990 asf_stream_muxer_select="asf_muxer"
2991 avi_demuxer_select="iso_media riffdec exif"
2992 avi_muxer_select="riffenc"
2993 caf_demuxer_select="iso_media riffdec"
2994 caf_muxer_select="iso_media"
2995 dash_muxer_select="mp4_muxer"
2996 dash_demuxer_deps="libxml2"
2997 dirac_demuxer_select="dirac_parser"
2998 dts_demuxer_select="dca_parser"
2999 dtshd_demuxer_select="dca_parser"
3000 dv_demuxer_select="dvprofile"
3001 dv_muxer_select="dvprofile"
3002 dxa_demuxer_select="riffdec"
3003 eac3_demuxer_select="ac3_parser"
3004 f4v_muxer_select="mov_muxer"
3005 fifo_muxer_deps="threads"
3006 flac_demuxer_select="flac_parser"
3007 hds_muxer_select="flv_muxer"
3008 hls_muxer_select="mpegts_muxer"
3009 hls_muxer_suggest="gcrypt openssl"
3010 image2_alias_pix_demuxer_select="image2_demuxer"
3011 image2_brender_pix_demuxer_select="image2_demuxer"
3012 ipod_muxer_select="mov_muxer"
3013 ismv_muxer_select="mov_muxer"
3014 matroska_audio_muxer_select="matroska_muxer"
3015 matroska_demuxer_select="iso_media riffdec"
3016 matroska_demuxer_suggest="bzlib lzo zlib"
3017 matroska_muxer_select="iso_media riffenc"
3018 mmf_muxer_select="riffenc"
3019 mov_demuxer_select="iso_media riffdec"
3020 mov_demuxer_suggest="zlib"
3021 mov_muxer_select="iso_media riffenc rtpenc_chain"
3022 mp3_demuxer_select="mpegaudio_parser"
3023 mp3_muxer_select="mpegaudioheader"
3024 mp4_muxer_select="mov_muxer"
3025 mpegts_demuxer_select="iso_media"
3026 mpegts_muxer_select="adts_muxer latm_muxer"
3027 mpegtsraw_demuxer_select="mpegts_demuxer"
3028 mxf_d10_muxer_select="mxf_muxer"
3029 mxf_opatom_muxer_select="mxf_muxer"
3030 nut_muxer_select="riffenc"
3031 nuv_demuxer_select="riffdec"
3032 oga_muxer_select="ogg_muxer"
3033 ogg_demuxer_select="dirac_parse"
3034 ogv_muxer_select="ogg_muxer"
3035 opus_muxer_select="ogg_muxer"
3036 psp_muxer_select="mov_muxer"
3037 rtp_demuxer_select="sdp_demuxer"
3038 rtp_muxer_select="golomb"
3039 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3040 rtsp_demuxer_select="http_protocol rtpdec"
3041 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3042 sap_demuxer_select="sdp_demuxer"
3043 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3044 sdp_demuxer_select="rtpdec"
3045 smoothstreaming_muxer_select="ismv_muxer"
3046 spdif_demuxer_select="adts_header"
3047 spdif_muxer_select="adts_header"
3048 spx_muxer_select="ogg_muxer"
3049 swf_demuxer_suggest="zlib"
3050 tak_demuxer_select="tak_parser"
3051 tg2_muxer_select="mov_muxer"
3052 tgp_muxer_select="mov_muxer"
3053 vobsub_demuxer_select="mpegps_demuxer"
3054 w64_demuxer_select="wav_demuxer"
3055 w64_muxer_select="wav_muxer"
3056 wav_demuxer_select="riffdec"
3057 wav_muxer_select="riffenc"
3058 webm_muxer_select="iso_media riffenc"
3059 webm_dash_manifest_demuxer_select="matroska_demuxer"
3060 wtv_demuxer_select="mpegts_demuxer riffdec"
3061 wtv_muxer_select="mpegts_muxer riffenc"
3062 xmv_demuxer_select="riffdec"
3063 xwma_demuxer_select="riffdec"
3064
3065 # indevs / outdevs
3066 alsa_indev_deps="alsa"
3067 alsa_outdev_deps="alsa"
3068 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3069 avfoundation_indev_suggest="coregraphics applicationservices"
3070 avfoundation_indev_extralibs="-framework Foundation"
3071 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3072 caca_outdev_deps="libcaca"
3073 decklink_deps_any="libdl LoadLibrary"
3074 decklink_indev_deps="decklink threads"
3075 decklink_indev_extralibs="-lstdc++"
3076 decklink_outdev_deps="decklink threads"
3077 decklink_outdev_extralibs="-lstdc++"
3078 libndi_newtek_indev_deps="libndi_newtek"
3079 libndi_newtek_indev_extralibs="-lndi"
3080 libndi_newtek_outdev_deps="libndi_newtek"
3081 libndi_newtek_outdev_extralibs="-lndi"
3082 dshow_indev_deps="IBaseFilter"
3083 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3084 fbdev_indev_deps="linux_fb_h"
3085 fbdev_outdev_deps="linux_fb_h"
3086 gdigrab_indev_deps="CreateDIBSection"
3087 gdigrab_indev_extralibs="-lgdi32"
3088 gdigrab_indev_select="bmp_decoder"
3089 iec61883_indev_deps="libiec61883"
3090 jack_indev_deps="libjack"
3091 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3092 kmsgrab_indev_deps="libdrm"
3093 lavfi_indev_deps="avfilter"
3094 libcdio_indev_deps="libcdio"
3095 libdc1394_indev_deps="libdc1394"
3096 openal_indev_deps="openal"
3097 opengl_outdev_deps="opengl"
3098 oss_indev_deps_any="sys_soundcard_h"
3099 oss_outdev_deps_any="sys_soundcard_h"
3100 pulse_indev_deps="libpulse"
3101 pulse_outdev_deps="libpulse"
3102 sdl2_outdev_deps="sdl2"
3103 sndio_indev_deps="sndio"
3104 sndio_outdev_deps="sndio"
3105 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3106 v4l2_indev_suggest="libv4l2"
3107 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3108 v4l2_outdev_suggest="libv4l2"
3109 vfwcap_indev_deps="vfw32 vfwcap_defines"
3110 xcbgrab_indev_deps="libxcb"
3111 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3112 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3113 xv_outdev_extralibs="-lXv -lX11 -lXext"
3114
3115 # protocols
3116 async_protocol_deps="threads"
3117 bluray_protocol_deps="libbluray"
3118 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3119 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3120 ffrtmpcrypt_protocol_select="tcp_protocol"
3121 ffrtmphttp_protocol_conflict="librtmp_protocol"
3122 ffrtmphttp_protocol_select="http_protocol"
3123 ftp_protocol_select="tcp_protocol"
3124 gopher_protocol_select="network"
3125 http_protocol_select="tcp_protocol"
3126 http_protocol_suggest="zlib"
3127 httpproxy_protocol_select="tcp_protocol"
3128 httpproxy_protocol_suggest="zlib"
3129 https_protocol_select="tls_protocol"
3130 https_protocol_suggest="zlib"
3131 icecast_protocol_select="http_protocol"
3132 librtmp_protocol_deps="librtmp"
3133 librtmpe_protocol_deps="librtmp"
3134 librtmps_protocol_deps="librtmp"
3135 librtmpt_protocol_deps="librtmp"
3136 librtmpte_protocol_deps="librtmp"
3137 libsmbclient_protocol_deps="libsmbclient gplv3"
3138 libssh_protocol_deps="libssh"
3139 mmsh_protocol_select="http_protocol"
3140 mmst_protocol_select="network"
3141 rtmp_protocol_conflict="librtmp_protocol"
3142 rtmp_protocol_select="tcp_protocol"
3143 rtmp_protocol_suggest="zlib"
3144 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3145 rtmpe_protocol_suggest="zlib"
3146 rtmps_protocol_conflict="librtmp_protocol"
3147 rtmps_protocol_select="tls_protocol"
3148 rtmps_protocol_suggest="zlib"
3149 rtmpt_protocol_select="ffrtmphttp_protocol"
3150 rtmpt_protocol_suggest="zlib"
3151 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3152 rtmpte_protocol_suggest="zlib"
3153 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3154 rtmpts_protocol_suggest="zlib"
3155 rtp_protocol_select="udp_protocol"
3156 schannel_conflict="openssl gnutls"
3157 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3158 sctp_protocol_select="network"
3159 securetransport_conflict="openssl gnutls"
3160 srtp_protocol_select="rtp_protocol srtp"
3161 tcp_protocol_select="network"
3162 tls_protocol_deps_any="gnutls openssl schannel securetransport"
3163 tls_protocol_select="tcp_protocol"
3164 udp_protocol_select="network"
3165 udplite_protocol_select="network"
3166 unix_protocol_deps="sys_un_h"
3167 unix_protocol_select="network"
3168
3169 # filters
3170 afftfilt_filter_deps="avcodec"
3171 afftfilt_filter_select="fft"
3172 afir_filter_deps="avcodec"
3173 afir_filter_select="fft"
3174 amovie_filter_deps="avcodec avformat"
3175 aresample_filter_deps="swresample"
3176 ass_filter_deps="libass"
3177 atempo_filter_deps="avcodec"
3178 atempo_filter_select="rdft"
3179 azmq_filter_deps="libzmq"
3180 blackframe_filter_deps="gpl"
3181 boxblur_filter_deps="gpl"
3182 bs2b_filter_deps="libbs2b"
3183 colormatrix_filter_deps="gpl"
3184 coreimage_filter_deps="coreimage appkit"
3185 coreimage_filter_extralibs="-framework OpenGL"
3186 coreimagesrc_filter_deps="coreimage appkit"
3187 coreimagesrc_filter_extralibs="-framework OpenGL"
3188 cover_rect_filter_deps="avcodec avformat gpl"
3189 cropdetect_filter_deps="gpl"
3190 deinterlace_qsv_filter_deps="libmfx"
3191 deinterlace_vaapi_filter_deps="vaapi"
3192 delogo_filter_deps="gpl"
3193 deshake_filter_select="pixelutils"
3194 drawtext_filter_deps="libfreetype"
3195 drawtext_filter_suggest="libfontconfig libfribidi"
3196 elbg_filter_deps="avcodec"
3197 eq_filter_deps="gpl"
3198 fftfilt_filter_deps="avcodec"
3199 fftfilt_filter_select="rdft"
3200 find_rect_filter_deps="avcodec avformat gpl"
3201 firequalizer_filter_deps="avcodec"
3202 firequalizer_filter_select="rdft"
3203 flite_filter_deps="libflite"
3204 framerate_filter_select="pixelutils"
3205 frei0r_filter_deps="frei0r libdl"
3206 frei0r_src_filter_deps="frei0r libdl"
3207 fspp_filter_deps="gpl"
3208 geq_filter_deps="gpl"
3209 histeq_filter_deps="gpl"
3210 hqdn3d_filter_deps="gpl"
3211 interlace_filter_deps="gpl"
3212 kerndeint_filter_deps="gpl"
3213 ladspa_filter_deps="ladspa libdl"
3214 lv2_filter_deps="lv2"
3215 mcdeint_filter_deps="avcodec gpl"
3216 movie_filter_deps="avcodec avformat"
3217 mpdecimate_filter_deps="gpl"
3218 mpdecimate_filter_select="pixelutils"
3219 mptestsrc_filter_deps="gpl"
3220 negate_filter_deps="lut_filter"
3221 nnedi_filter_deps="gpl"
3222 ocr_filter_deps="libtesseract"
3223 ocv_filter_deps="libopencv"
3224 overlay_opencl_filter_deps="opencl"
3225 overlay_qsv_filter_deps="libmfx"
3226 overlay_qsv_filter_select="qsvvpp"
3227 owdenoise_filter_deps="gpl"
3228 pan_filter_deps="swresample"
3229 perspective_filter_deps="gpl"
3230 phase_filter_deps="gpl"
3231 pp7_filter_deps="gpl"
3232 pp_filter_deps="gpl postproc"
3233 pullup_filter_deps="gpl"
3234 removelogo_filter_deps="avcodec avformat swscale"
3235 repeatfields_filter_deps="gpl"
3236 resample_filter_deps="avresample"
3237 rubberband_filter_deps="librubberband"
3238 sab_filter_deps="gpl swscale"
3239 scale2ref_filter_deps="swscale"
3240 scale_filter_deps="swscale"
3241 scale_qsv_filter_deps="libmfx"
3242 select_filter_select="pixelutils"
3243 showcqt_filter_deps="avcodec avformat swscale"
3244 showcqt_filter_suggest="libfontconfig libfreetype"
3245 showcqt_filter_select="fft"
3246 showfreqs_filter_deps="avcodec"
3247 showfreqs_filter_select="fft"
3248 showspectrum_filter_deps="avcodec"
3249 showspectrum_filter_select="fft"
3250 showspectrumpic_filter_deps="avcodec"
3251 showspectrumpic_filter_select="fft"
3252 signature_filter_deps="gpl avcodec avformat"
3253 smartblur_filter_deps="gpl swscale"
3254 sofalizer_filter_deps="libmysofa avcodec"
3255 sofalizer_filter_select="fft"
3256 spectrumsynth_filter_deps="avcodec"
3257 spectrumsynth_filter_select="fft"
3258 spp_filter_deps="gpl avcodec"
3259 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3260 stereo3d_filter_deps="gpl"
3261 subtitles_filter_deps="avformat avcodec libass"
3262 super2xsai_filter_deps="gpl"
3263 pixfmts_super2xsai_test_deps="super2xsai_filter"
3264 tinterlace_filter_deps="gpl"
3265 tinterlace_merge_test_deps="tinterlace_filter"
3266 tinterlace_pad_test_deps="tinterlace_filter"
3267 tonemap_filter_deps="const_nan"
3268 unsharp_opencl_filter_deps="opencl"
3269 uspp_filter_deps="gpl avcodec"
3270 vaguedenoiser_filter_deps="gpl"
3271 vidstabdetect_filter_deps="libvidstab"
3272 vidstabtransform_filter_deps="libvidstab"
3273 libvmaf_filter_deps="libvmaf"
3274 zmq_filter_deps="libzmq"
3275 zoompan_filter_deps="swscale"
3276 zscale_filter_deps="libzimg const_nan"
3277 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3278 vpp_qsv_filter_deps="libmfx"
3279 vpp_qsv_filter_select="qsvvpp"
3280
3281 # examples
3282 avio_dir_cmd_deps="avformat avutil"
3283 avio_reading_deps="avformat avcodec avutil"
3284 decode_audio_example_deps="avcodec avutil"
3285 decode_video_example_deps="avcodec avutil"
3286 demuxing_decoding_example_deps="avcodec avformat avutil"
3287 encode_audio_example_deps="avcodec avutil"
3288 encode_video_example_deps="avcodec avutil"
3289 extract_mvs_example_deps="avcodec avformat avutil"
3290 filter_audio_example_deps="avfilter avutil"
3291 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3292 filtering_video_example_deps="avfilter avcodec avformat avutil"
3293 http_multiclient_example_deps="avformat avutil fork"
3294 hw_decode_example_deps="avcodec avformat avutil"
3295 metadata_example_deps="avformat avutil"
3296 muxing_example_deps="avcodec avformat avutil swscale"
3297 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3298 remuxing_example_deps="avcodec avformat avutil"
3299 resampling_audio_example_deps="avutil swresample"
3300 scaling_video_example_deps="avutil swscale"
3301 transcode_aac_example_deps="avcodec avformat swresample"
3302 transcoding_example_deps="avfilter avcodec avformat avutil"
3303
3304 # EXTRALIBS_LIST
3305 cpu_init_extralibs="pthreads_extralibs"
3306 cws2fws_extralibs="zlib_extralibs"
3307
3308 # libraries, in linking order
3309 avcodec_deps="avutil"
3310 avcodec_suggest="libm"
3311 avcodec_select="null_bsf"
3312 avdevice_deps="avformat avcodec avutil"
3313 avdevice_suggest="libm"
3314 avfilter_deps="avutil"
3315 avfilter_suggest="libm"
3316 avformat_deps="avcodec avutil"
3317 avformat_suggest="libm network zlib"
3318 avresample_deps="avutil"
3319 avresample_suggest="libm"
3320 avutil_suggest="clock_gettime cuda libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3321 postproc_deps="avutil gpl"
3322 postproc_suggest="libm"
3323 swresample_deps="avutil"
3324 swresample_suggest="libm libsoxr"
3325 swscale_deps="avutil"
3326 swscale_suggest="libm"
3327
3328 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3329 avfilter_extralibs="pthreads_extralibs"
3330 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3331
3332 # programs
3333 ffmpeg_deps="avcodec avfilter avformat swresample"
3334 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3335                null_filter
3336                trim_filter"
3337 ffmpeg_suggest="ole32 psapi shell32"
3338 ffplay_deps="avcodec avformat swscale swresample sdl2"
3339 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3340 ffplay_suggest="shell32"
3341 ffprobe_deps="avcodec avformat"
3342 ffprobe_suggest="shell32"
3343 ffserver_deps="avformat fork sarestart"
3344 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3345
3346 # documentation
3347 podpages_deps="perl"
3348 manpages_deps="perl pod2man"
3349 htmlpages_deps="perl"
3350 htmlpages_deps_any="makeinfo_html texi2html"
3351 txtpages_deps="perl makeinfo"
3352 doc_deps_any="manpages htmlpages podpages txtpages"
3353
3354 # default parameters
3355
3356 logfile="ffbuild/config.log"
3357
3358 # installation paths
3359 prefix_default="/usr/local"
3360 bindir_default='${prefix}/bin'
3361 datadir_default='${prefix}/share/ffmpeg'
3362 docdir_default='${prefix}/share/doc/ffmpeg'
3363 incdir_default='${prefix}/include'
3364 libdir_default='${prefix}/lib'
3365 mandir_default='${prefix}/share/man'
3366
3367 # toolchain
3368 ar_default="ar"
3369 cc_default="gcc"
3370 cxx_default="g++"
3371 host_cc_default="gcc"
3372 doxygen_default="doxygen"
3373 install="install"
3374 ln_s_default="ln -s -f"
3375 nm_default="nm -g"
3376 pkg_config_default=pkg-config
3377 ranlib_default="ranlib"
3378 strip_default="strip"
3379 version_script='--version-script'
3380 objformat="elf32"
3381 x86asmexe_default="nasm"
3382 windres_default="windres"
3383 nvcc_default="nvcc"
3384 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3385 striptype="direct"
3386
3387 # OS
3388 target_os_default=$(tolower $(uname -s))
3389 host_os=$target_os_default
3390
3391 # machine
3392 if test "$target_os_default" = aix; then
3393     arch_default=$(uname -p)
3394     strip_default="strip -X32_64"
3395 else
3396     arch_default=$(uname -m)
3397 fi
3398 cpu="generic"
3399 intrinsics="none"
3400
3401 # configurable options
3402 enable $PROGRAM_LIST
3403 enable $DOCUMENT_LIST
3404 enable $EXAMPLE_LIST
3405 enable $(filter_out avresample $LIBRARY_LIST)
3406 enable stripping
3407
3408 enable asm
3409 enable debug
3410 enable doc
3411 enable faan faandct faanidct
3412 enable optimizations
3413 enable runtime_cpudetect
3414 enable safe_bitstream_reader
3415 enable static
3416 enable swscale_alpha
3417 enable valgrind_backtrace
3418
3419 sws_max_filter_size_default=256
3420 set_default sws_max_filter_size
3421
3422 # internal components are enabled by default
3423 enable $EXTRALIBS_LIST
3424
3425 # Avoid external, non-system, libraries getting enabled by dependency resolution
3426 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3427
3428 # build settings
3429 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3430 LIBPREF="lib"
3431 LIBSUF=".a"
3432 FULLNAME='$(NAME)$(BUILDSUF)'
3433 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3434 SLIBPREF="lib"
3435 SLIBSUF=".so"
3436 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3437 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3438 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3439 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3440 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3441 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3442 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3443
3444 asflags_filter=echo
3445 cflags_filter=echo
3446 ldflags_filter=echo
3447
3448 AS_C='-c'
3449 AS_O='-o $@'
3450 CC_C='-c'
3451 CC_E='-E -o $@'
3452 CC_O='-o $@'
3453 CXX_C='-c'
3454 CXX_O='-o $@'
3455 OBJCC_C='-c'
3456 OBJCC_E='-E -o $@'
3457 OBJCC_O='-o $@'
3458 X86ASM_O='-o $@'
3459 LD_O='-o $@'
3460 LD_LIB='-l%'
3461 LD_PATH='-L'
3462 HOSTCC_C='-c'
3463 HOSTCC_E='-E -o $@'
3464 HOSTCC_O='-o $@'
3465 HOSTLD_O='-o $@'
3466 NVCC_C='-c'
3467 NVCC_O='-o $@'
3468
3469 host_extralibs='-lm'
3470 host_cflags_filter=echo
3471 host_ldflags_filter=echo
3472
3473 target_path='$(CURDIR)'
3474
3475 # since the object filename is not given with the -MM flag, the compiler
3476 # is only able to print the basename, and we must add the path ourselves
3477 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3478 DEPFLAGS='-MM'
3479
3480 mkdir -p ffbuild
3481
3482 # find source path
3483 if test -f configure; then
3484     source_path=.
3485 else
3486     source_path=$(cd $(dirname "$0"); pwd)
3487     case "$source_path" in
3488         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3489     esac
3490     test -e "$source_path/config.h" &&
3491         die "Out of tree builds are impossible with config.h in source dir."
3492 fi
3493
3494 for v in "$@"; do
3495     r=${v#*=}
3496     l=${v%"$r"}
3497     r=$(sh_quote "$r")
3498     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3499 done
3500
3501 find_things(){
3502     thing=$1
3503     pattern=$2
3504     file=$source_path/$3
3505     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3506 }
3507
3508 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3509 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3510 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3511 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3512 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3513 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3514 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3515 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3516
3517 find_things_extern(){
3518     thing=$1
3519     pattern=$2
3520     file=$source_path/$3
3521     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3522 }
3523
3524 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3525 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3526 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3527
3528 AVCODEC_COMPONENTS_LIST="
3529     $BSF_LIST
3530     $DECODER_LIST
3531     $ENCODER_LIST
3532     $HWACCEL_LIST
3533     $PARSER_LIST
3534 "
3535
3536 AVDEVICE_COMPONENTS_LIST="
3537     $INDEV_LIST
3538     $OUTDEV_LIST
3539 "
3540
3541 AVFILTER_COMPONENTS_LIST="
3542     $FILTER_LIST
3543 "
3544
3545 AVFORMAT_COMPONENTS_LIST="
3546     $DEMUXER_LIST
3547     $MUXER_LIST
3548     $PROTOCOL_LIST
3549 "
3550
3551 ALL_COMPONENTS="
3552     $AVCODEC_COMPONENTS_LIST
3553     $AVDEVICE_COMPONENTS_LIST
3554     $AVFILTER_COMPONENTS_LIST
3555     $AVFORMAT_COMPONENTS_LIST
3556 "
3557
3558 for n in $COMPONENT_LIST; do
3559     v=$(toupper ${n%s})_LIST
3560     eval enable \$$v
3561     eval ${n}_if_any="\$$v"
3562 done
3563
3564 enable $ARCH_EXT_LIST
3565
3566 die_unknown(){
3567     echo "Unknown option \"$1\"."
3568     echo "See $0 --help for available options."
3569     exit 1
3570 }
3571
3572 print_in_columns() {
3573     cols=$(expr $ncols / 24)
3574     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3575 }
3576
3577 show_list() {
3578     suffix=_$1
3579     shift
3580     echo $* | sed s/$suffix//g | print_in_columns
3581     exit 0
3582 }
3583
3584 rand_list(){
3585     IFS=', '
3586     set -- $*
3587     unset IFS
3588     for thing; do
3589         comp=${thing%:*}
3590         prob=${thing#$comp}
3591         prob=${prob#:}
3592         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3593         echo "prob ${prob:-0.5}"
3594         printf '%s\n' $comp
3595     done
3596 }
3597
3598 do_random(){
3599     action=$1
3600     shift
3601     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3602     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3603 }
3604
3605 for opt do
3606     optval="${opt#*=}"
3607     case "$opt" in
3608         --extra-ldflags=*)
3609             add_ldflags $optval
3610         ;;
3611         --extra-ldexeflags=*)
3612             add_ldexeflags $optval
3613         ;;
3614         --extra-ldsoflags=*)
3615             add_ldsoflags $optval
3616         ;;
3617         --extra-ldlibflags=*)
3618             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3619                  "removed in the future. Use --extra-ldsoflags instead."
3620             add_ldsoflags $optval
3621         ;;
3622         --extra-libs=*)
3623             add_extralibs $optval
3624         ;;
3625         --disable-devices)
3626             disable $INDEV_LIST $OUTDEV_LIST
3627         ;;
3628         --enable-debug=*)
3629             debuglevel="$optval"
3630         ;;
3631         --disable-programs)
3632             disable $PROGRAM_LIST
3633         ;;
3634         --disable-everything)
3635             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3636         ;;
3637         --disable-all)
3638             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3639             disable $LIBRARY_LIST $PROGRAM_LIST doc
3640             enable avutil
3641         ;;
3642         --enable-random|--disable-random)
3643             action=${opt%%-random}
3644             do_random ${action#--} $COMPONENT_LIST
3645         ;;
3646         --enable-random=*|--disable-random=*)
3647             action=${opt%%-random=*}
3648             do_random ${action#--} $optval
3649         ;;
3650         --enable-sdl)
3651             enable sdl2
3652         ;;
3653         --enable-*=*|--disable-*=*)
3654             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3655             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3656             eval list=\$$(toupper $thing)_LIST
3657             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3658             list=$(filter "$name" $list)
3659             [ "$list" = "" ] && warn "Option $opt did not match anything"
3660             $action $list
3661         ;;
3662         --enable-yasm|--disable-yasm)
3663             warn "The ${opt} option is only provided for compatibility and will be\n"\
3664                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3665             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3666         ;;
3667         --yasmexe=*)
3668             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3669                  "removed in the future. Use --x86asmexe instead."
3670             x86asmexe="$optval"
3671         ;;
3672         --enable-?*|--disable-?*)
3673             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3674             if is_in $option $COMPONENT_LIST; then
3675                 test $action = disable && action=unset
3676                 eval $action \$$(toupper ${option%s})_LIST
3677             elif is_in $option $CMDLINE_SELECT; then
3678                 $action $option
3679             else
3680                 die_unknown $opt
3681             fi
3682         ;;
3683         --list-*)
3684             NAME="${opt#--list-}"
3685             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3686             NAME=${NAME%s}
3687             eval show_list $NAME \$$(toupper $NAME)_LIST
3688         ;;
3689         --help|-h) show_help
3690         ;;
3691         --quiet|-q) quiet=yes
3692         ;;
3693         --fatal-warnings) enable fatal_warnings
3694         ;;
3695         --libfuzzer=*)
3696             libfuzzer_path="$optval"
3697         ;;
3698         *)
3699             optname="${opt%%=*}"
3700             optname="${optname#--}"
3701             optname=$(echo "$optname" | sed 's/-/_/g')
3702             if is_in $optname $CMDLINE_SET; then
3703                 eval $optname='$optval'
3704             elif is_in $optname $CMDLINE_APPEND; then
3705                 append $optname "$optval"
3706             else
3707                 die_unknown $opt
3708             fi
3709         ;;
3710     esac
3711 done
3712
3713 for e in $env; do
3714     eval "export $e"
3715 done
3716
3717 if disabled autodetect; then
3718
3719     # Unless iconv is explicitely disabled by the user, we still want to probe
3720     # for the iconv from the libc.
3721     disabled iconv || enable libc_iconv
3722
3723     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3724     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3725 fi
3726 # Mark specifically enabled, but normally autodetected libraries as requested.
3727 for lib in $AUTODETECT_LIBS; do
3728     enabled $lib && request $lib
3729 done
3730 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3731 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3732 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3733
3734 disabled logging && logfile=/dev/null
3735
3736 # command line configuration sanity checks
3737
3738 # we need to build at least one lib type
3739 if ! enabled_any static shared; then
3740     cat <<EOF
3741 At least one library type must be built.
3742 Specify --enable-static to build the static libraries or --enable-shared to
3743 build the shared libraries as well. To only build the shared libraries specify
3744 --disable-static in addition to --enable-shared.
3745 EOF
3746     exit 1
3747 fi
3748
3749 die_license_disabled() {
3750     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3751 }
3752
3753 die_license_disabled_gpl() {
3754     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3755 }
3756
3757 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3758 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3759
3760 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3761 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3762
3763 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3764
3765 enabled_all gnutls openssl &&
3766     die "GnuTLS and OpenSSL must not be enabled at the same time."
3767
3768 # Disable all the library-specific components if the library itself
3769 # is disabled, see AVCODEC_LIST and following _LIST variables.
3770
3771 disable_components(){
3772     disabled ${1} && disable $(
3773         eval components="\$$(toupper ${1})_COMPONENTS"
3774         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3775     )
3776 }
3777
3778 map 'disable_components $v' $LIBRARY_LIST
3779
3780 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3781 set >> $logfile
3782
3783 test -n "$valgrind" && toolchain="valgrind-memcheck"
3784
3785 enabled ossfuzz && {
3786     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3787     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3788 }
3789
3790 case "$toolchain" in
3791     *-asan)
3792         cc_default="${toolchain%-asan}"
3793         add_cflags  -fsanitize=address
3794         add_ldflags -fsanitize=address
3795     ;;
3796     *-msan)
3797         cc_default="${toolchain%-msan}"
3798         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3799         add_ldflags -fsanitize=memory
3800     ;;
3801     *-tsan)
3802         cc_default="${toolchain%-tsan}"
3803         add_cflags  -fsanitize=thread -fPIE
3804         add_ldflags -fsanitize=thread -pie
3805         case "$toolchain" in
3806             gcc-tsan)
3807                 add_cflags  -fPIC
3808                 add_ldflags -fPIC
3809                 ;;
3810         esac
3811     ;;
3812     *-usan)
3813         cc_default="${toolchain%-usan}"
3814         add_cflags  -fsanitize=undefined
3815         add_ldflags -fsanitize=undefined
3816     ;;
3817     valgrind-*)
3818         target_exec_default="valgrind"
3819         case "$toolchain" in
3820             valgrind-massif)
3821                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3822                 ;;
3823             valgrind-memcheck)
3824                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3825                 ;;
3826         esac
3827     ;;
3828     msvc)
3829         # Check whether the current MSVC version needs the C99 converter.
3830         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3831         # support enough of C99 to build ffmpeg. Default to the new
3832         # behaviour if the regexp was unable to match anything, since this
3833         # successfully parses the version number of existing supported
3834         # versions that require the converter (MSVC 2010 and 2012).
3835         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3836         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3837             cc_default="cl"
3838             cxx_default="cl"
3839         else
3840             cc_default="c99wrap cl"
3841             cxx_default="c99wrap cl"
3842         fi
3843         ld_default="$source_path/compat/windows/mslink"
3844         nm_default="dumpbin -symbols"
3845         ar_default="lib"
3846         case "$arch" in
3847         aarch64|arm64)
3848             as_default="armasm64"
3849             ;;
3850         arm*)
3851             as_default="armasm"
3852             ;;
3853         esac
3854         target_os_default="win32"
3855         # Use a relative path for TMPDIR. This makes sure all the
3856         # ffconf temp files are written with a relative path, avoiding
3857         # issues with msys/win32 path conversion for MSVC parameters
3858         # such as -Fo<file> or -out:<file>.
3859         TMPDIR=.
3860     ;;
3861     icl)
3862         cc_default="icl"
3863         ld_default="xilink"
3864         nm_default="dumpbin -symbols"
3865         ar_default="xilib"
3866         target_os_default="win32"
3867         TMPDIR=.
3868     ;;
3869     gcov)
3870         add_cflags  -fprofile-arcs -ftest-coverage
3871         add_ldflags -fprofile-arcs -ftest-coverage
3872     ;;
3873     llvm-cov)
3874         add_cflags -fprofile-arcs -ftest-coverage
3875         add_ldflags --coverage
3876     ;;
3877     hardened)
3878         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3879         add_cflags   -fno-strict-overflow -fstack-protector-all
3880         add_ldflags  -Wl,-z,relro -Wl,-z,now
3881         add_cflags   -fPIE
3882         add_ldexeflags -fPIE -pie
3883     ;;
3884     ?*)
3885         die "Unknown toolchain $toolchain"
3886     ;;
3887 esac
3888
3889 if test -n "$cross_prefix"; then
3890     test -n "$arch" && test -n "$target_os" ||
3891         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3892     enable cross_compile
3893 fi
3894
3895 ar_default="${cross_prefix}${ar_default}"
3896 cc_default="${cross_prefix}${cc_default}"
3897 cxx_default="${cross_prefix}${cxx_default}"
3898 nm_default="${cross_prefix}${nm_default}"
3899 pkg_config_default="${cross_prefix}${pkg_config_default}"
3900 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3901     ranlib_default="${cross_prefix}${ranlib_default} -D"
3902 else
3903     ranlib_default="${cross_prefix}${ranlib_default}"
3904 fi
3905 strip_default="${cross_prefix}${strip_default}"
3906 windres_default="${cross_prefix}${windres_default}"
3907
3908 sysinclude_default="${sysroot}/usr/include"
3909
3910 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3911     target_exec target_os x86asmexe nvcc
3912 enabled cross_compile || host_cc_default=$cc
3913 set_default host_cc
3914
3915 pkg_config_fail_message=""
3916 if ! $pkg_config --version >/dev/null 2>&1; then
3917     warn "$pkg_config not found, library detection may fail."
3918     pkg_config=false
3919 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3920     pkg_config_fail_message="
3921 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3922 fi
3923
3924 if test $doxygen != $doxygen_default && \
3925   ! $doxygen --version >/dev/null 2>&1; then
3926     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3927 fi
3928
3929 exesuf() {
3930     case $1 in
3931         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3932     esac
3933 }
3934
3935 EXESUF=$(exesuf $target_os)
3936 HOSTEXESUF=$(exesuf $host_os)
3937
3938 # set temporary file name
3939 : ${TMPDIR:=$TEMPDIR}
3940 : ${TMPDIR:=$TMP}
3941 : ${TMPDIR:=/tmp}
3942
3943 if [ -n "$tempprefix" ] ; then
3944     mktemp(){
3945         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3946         echo "$tmpname"
3947         mkdir "$tmpname"
3948     }
3949 elif ! check_cmd mktemp -u XXXXXX; then
3950     # simple replacement for missing mktemp
3951     # NOT SAFE FOR GENERAL USE
3952     mktemp(){
3953         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3954         echo "$tmpname"
3955         mkdir "$tmpname"
3956     }
3957 fi
3958
3959 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3960     die "Unable to create temporary directory in $TMPDIR."
3961
3962 tmpfile(){
3963     tmp="${FFTMPDIR}/test"$2
3964     (set -C; exec > $tmp) 2> /dev/null ||
3965         die "Unable to create temporary file in $FFTMPDIR."
3966     eval $1=$tmp
3967 }
3968
3969 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3970 trap 'exit 2' INT
3971
3972 tmpfile TMPASM .asm
3973 tmpfile TMPC   .c
3974 tmpfile TMPCPP .cpp
3975 tmpfile TMPE   $EXESUF
3976 tmpfile TMPH   .h
3977 tmpfile TMPM   .m
3978 tmpfile TMPO   .o
3979 tmpfile TMPS   .S
3980 tmpfile TMPSH  .sh
3981 tmpfile TMPV   .ver
3982
3983 unset -f mktemp
3984
3985 chmod +x $TMPE
3986
3987 # make sure we can execute files in $TMPDIR
3988 cat > $TMPSH 2>> $logfile <<EOF
3989 #! /bin/sh
3990 EOF
3991 chmod +x $TMPSH >> $logfile 2>&1
3992 if ! $TMPSH >> $logfile 2>&1; then
3993     cat <<EOF
3994 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3995 variable to another directory and make sure that it is not mounted noexec.
3996 EOF
3997     die "Sanity test failed."
3998 fi
3999
4000 armasm_flags(){
4001     for flag; do
4002         case $flag in
4003             # Filter out MSVC cl.exe options from cflags that shouldn't
4004             # be passed to gas-preprocessor
4005             -M[TD]*)                                            ;;
4006             *)                  echo $flag                      ;;
4007         esac
4008    done
4009 }
4010
4011 cparser_flags(){
4012     for flag; do
4013         case $flag in
4014             -Wno-switch)             echo -Wno-switch-enum ;;
4015             -Wno-format-zero-length) ;;
4016             -Wdisabled-optimization) ;;
4017             -Wno-pointer-sign)       echo -Wno-other ;;
4018             *)                       echo $flag ;;
4019         esac
4020     done
4021 }
4022
4023 msvc_common_flags(){
4024     for flag; do
4025         case $flag in
4026             # In addition to specifying certain flags under the compiler
4027             # specific filters, they must be specified here as well or else the
4028             # generic catch all at the bottom will print the original flag.
4029             -Wall)                ;;
4030             -Wextra)              ;;
4031             -std=c99)             ;;
4032             # Common flags
4033             -fomit-frame-pointer) ;;
4034             -g)                   echo -Z7 ;;
4035             -fno-math-errno)      ;;
4036             -fno-common)          ;;
4037             -fno-signed-zeros)    ;;
4038             -fPIC)                ;;
4039             -mthumb)              ;;
4040             -march=*)             ;;
4041             -lz)                  echo zlib.lib ;;
4042             -lx264)               echo libx264.lib ;;
4043             -lstdc++)             ;;
4044             -l*)                  echo ${flag#-l}.lib ;;
4045             -LARGEADDRESSAWARE)   echo $flag ;;
4046             -L*)                  echo -libpath:${flag#-L} ;;
4047             *)                    echo $flag ;;
4048         esac
4049     done
4050 }
4051
4052 msvc_flags(){
4053     msvc_common_flags "$@"
4054     for flag; do
4055         case $flag in
4056             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4057                                        -wd4554 ;;
4058             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4059                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4060                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4061                                        -wd4307 \
4062                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4063         esac
4064     done
4065 }
4066
4067 icl_flags(){
4068     msvc_common_flags "$@"
4069     for flag; do
4070         case $flag in
4071             # Despite what Intel's documentation says -Wall, which is supported
4072             # on Windows, does enable remarks so disable them here.
4073             -Wall)                echo $flag -Qdiag-disable:remark ;;
4074             -std=c99)             echo -Qstd=c99 ;;
4075             -flto)                echo -ipo ;;
4076         esac
4077     done
4078 }
4079
4080 icc_flags(){
4081     for flag; do
4082         case $flag in
4083             -flto)                echo -ipo ;;
4084             *)                    echo $flag ;;
4085         esac
4086     done
4087 }
4088
4089 suncc_flags(){
4090     for flag; do
4091         case $flag in
4092             -march=*|-mcpu=*)
4093                 case "${flag#*=}" in
4094                     native)                   echo -xtarget=native       ;;
4095                     v9|niagara)               echo -xarch=sparc          ;;
4096                     ultrasparc)               echo -xarch=sparcvis       ;;
4097                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4098                     i586|pentium)             echo -xchip=pentium        ;;
4099                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4100                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4101                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4102                     pentium4*)          echo -xtarget=pentium4           ;;
4103                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4104                     *-sse3)             echo -xarch=sse3                 ;;
4105                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4106                     bonnell)                   echo -xarch=ssse3         ;;
4107                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4108                     westmere)                  echo -xtarget=westmere    ;;
4109                     silvermont)                echo -xarch=sse4_2        ;;
4110                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4111                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4112                                                echo -xarch=avx           ;;
4113                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4114                     btver1)                    echo -xarch=amdsse4a      ;;
4115                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4116                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4117                     k8|opteron|athlon64|athlon-fx)
4118                                                echo -xarch=sse2a         ;;
4119                     athlon*)                   echo -xarch=pentium_proa  ;;
4120                 esac
4121                 ;;
4122             -std=c99)             echo -xc99              ;;
4123             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4124             -fPIC)                echo -KPIC -xcode=pic32 ;;
4125             -W*,*)                echo $flag              ;;
4126             -f*-*|-W*|-mimpure-text)                      ;;
4127             -shared)              echo -G                 ;;
4128             *)                    echo $flag              ;;
4129         esac
4130     done
4131 }
4132
4133 probe_cc(){
4134     pfx=$1
4135     _cc=$2
4136     first=$3
4137
4138     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4139     unset _ld_o _ldflags _ld_lib _ld_path
4140     unset _depflags _DEPCMD _DEPFLAGS
4141     _flags_filter=echo
4142
4143     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4144         true # no-op to avoid reading stdin in following checks
4145     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4146         _type=llvm_gcc
4147         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4148         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4149         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4150         _cflags_speed='-O3'
4151         _cflags_size='-Os'
4152     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4153         _type=gcc
4154         gcc_version=$($_cc --version | head -n1)
4155         gcc_basever=$($_cc -dumpversion)
4156         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4157         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4158         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4159         case $gcc_basever in
4160             2) ;;
4161             2.*) ;;
4162             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4163         esac
4164         if [ "$first" = true ]; then
4165             case $gcc_basever in
4166                 4.2*)
4167                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4168             esac
4169         fi
4170         _cflags_speed='-O3'
4171         _cflags_size='-Os'
4172     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4173         _type=icc
4174         _ident=$($_cc --version | head -n1)
4175         _depflags='-MMD'
4176         _cflags_speed='-O3'
4177         _cflags_size='-Os'
4178         _cflags_noopt='-O1'
4179         _flags_filter=icc_flags
4180     elif $_cc -v 2>&1 | grep -q xlc; then
4181         _type=xlc
4182         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4183         _cflags_speed='-O5'
4184         _cflags_size='-O5 -qcompact'
4185     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4186         test -d "$sysroot" || die "No valid sysroot specified."
4187         _type=armcc
4188         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4189         armcc_conf="$PWD/armcc.conf"
4190         $_cc --arm_linux_configure                 \
4191              --arm_linux_config_file="$armcc_conf" \
4192              --configure_sysroot="$sysroot"        \
4193              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4194              die "Error creating armcc configuration file."
4195         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4196         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4197         as_default="${cross_prefix}gcc"
4198         _depflags='-MMD'
4199         _cflags_speed='-O3'
4200         _cflags_size='-Os'
4201     elif $_cc -v 2>&1 | grep -q clang; then
4202         _type=clang
4203         _ident=$($_cc --version 2>/dev/null | head -n1)
4204         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4205         _cflags_speed='-O3'
4206         _cflags_size='-Oz'
4207     elif $_cc -V 2>&1 | grep -q Sun; then
4208         _type=suncc
4209         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4210         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4211         _DEPFLAGS='-xM1 -xc99'
4212         _ldflags='-std=c99'
4213         _cflags_speed='-O5'
4214         _cflags_size='-O5 -xspace'
4215         _flags_filter=suncc_flags
4216     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4217         _type=pathscale
4218         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4219         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4220         _cflags_speed='-O2'
4221         _cflags_size='-Os'
4222         _flags_filter='filter_out -Wdisabled-optimization'
4223     elif $_cc -v 2>&1 | grep -q Open64; then
4224         _type=open64
4225         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4226         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4227         _cflags_speed='-O2'
4228         _cflags_size='-Os'
4229         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4230     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4231         _type=armasm
4232         _ident=$($_cc | head -n1)
4233         # 4509: "This form of conditional instruction is deprecated"
4234         _flags="-nologo -ignore 4509"
4235         _flags_filter=armasm_flags
4236     elif $_cc 2>&1 | grep -q Intel; then
4237         _type=icl
4238         _ident=$($_cc 2>&1 | head -n1)
4239         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4240         # Not only is O3 broken on 13.x+ but it is slower on all previous
4241         # versions (tested) as well.
4242         _cflags_speed="-O2"
4243         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4244         if $_cc 2>&1 | grep -q Linker; then
4245             _ld_o='-out:$@'
4246         else
4247             _ld_o='-Fe$@'
4248         fi
4249         _cc_o='-Fo$@'
4250         _cc_e='-P'
4251         _flags_filter=icl_flags
4252         _ld_lib='lib%.a'
4253         _ld_path='-libpath:'
4254         # -Qdiag-error to make icl error when seeing certain unknown arguments
4255         _flags='-nologo -Qdiag-error:4044,10157'
4256         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4257         # with MSVC which enables it by default.
4258         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4259         disable stripping
4260     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4261         # lld can emulate multiple different linkers; in ms link.exe mode,
4262         # the -? parameter gives the help output which contains an identifyable
4263         # string, while it gives an error in other modes.
4264         _type=lld-link
4265         # The link.exe mode doesn't have a switch for getting the version,
4266         # but we can force it back to gnu mode and get the version from there.
4267         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4268         _ld_o='-out:$@'
4269         _flags_filter=msvc_flags
4270         _ld_lib='lib%.a'
4271         _ld_path='-libpath:'
4272     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4273         _type=msvc
4274         _ident=$($_cc 2>&1 | head -n1)
4275         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4276         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4277         _cflags_speed="-O2"
4278         _cflags_size="-O1"
4279         _cflags_noopt="-O1"
4280         if $_cc -nologo- 2>&1 | grep -q Linker; then
4281             _ld_o='-out:$@'
4282         else
4283             _ld_o='-Fe$@'
4284         fi
4285         _cc_o='-Fo$@'
4286         _cc_e='-P -Fi$@'
4287         _flags_filter=msvc_flags
4288         _ld_lib='lib%.a'
4289         _ld_path='-libpath:'
4290         _flags='-nologo'
4291         disable stripping
4292     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4293         _type=cparser
4294         _ident=$($_cc --version | head -n1)
4295         _depflags='-MMD'
4296         _cflags_speed='-O4'
4297         _cflags_size='-O2'
4298         _flags_filter=cparser_flags
4299     fi
4300
4301     eval ${pfx}_type=\$_type
4302     eval ${pfx}_ident=\$_ident
4303 }
4304
4305 set_ccvars(){
4306     eval ${1}_C=\${_cc_c-\${${1}_C}}
4307     eval ${1}_E=\${_cc_e-\${${1}_E}}
4308     eval ${1}_O=\${_cc_o-\${${1}_O}}
4309
4310     if [ -n "$_depflags" ]; then
4311         eval ${1}_DEPFLAGS=\$_depflags
4312     else
4313         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4314         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4315         eval DEP${1}FLAGS=\$_flags
4316     fi
4317 }
4318
4319 probe_cc cc "$cc" "true"
4320 cflags_filter=$_flags_filter
4321 cflags_speed=$_cflags_speed
4322 cflags_size=$_cflags_size
4323 cflags_noopt=$_cflags_noopt
4324 add_cflags $_flags $_cflags
4325 cc_ldflags=$_ldflags
4326 set_ccvars CC
4327 set_ccvars CXX
4328
4329 probe_cc hostcc "$host_cc"
4330 host_cflags_filter=$_flags_filter
4331 host_cflags_speed=$_cflags_speed
4332 add_host_cflags  $_flags $_cflags
4333 set_ccvars HOSTCC
4334
4335 test -n "$cc_type" && enable $cc_type ||
4336     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4337
4338 : ${as_default:=$cc}
4339 : ${objcc_default:=$cc}
4340 : ${dep_cc_default:=$cc}
4341 : ${ld_default:=$cc}
4342 : ${host_ld_default:=$host_cc}
4343 set_default ar as objcc dep_cc ld ln_s host_ld windres
4344
4345 probe_cc as "$as"
4346 asflags_filter=$_flags_filter
4347 add_asflags $_flags $_cflags
4348 set_ccvars AS
4349
4350 probe_cc objcc "$objcc"
4351 objcflags_filter=$_flags_filter
4352 add_objcflags $_flags $_cflags
4353 set_ccvars OBJC
4354
4355 probe_cc ld "$ld"
4356 ldflags_filter=$_flags_filter
4357 add_ldflags $_flags $_ldflags
4358 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4359 LD_O=${_ld_o-$LD_O}
4360 LD_LIB=${_ld_lib-$LD_LIB}
4361 LD_PATH=${_ld_path-$LD_PATH}
4362
4363 probe_cc hostld "$host_ld"
4364 host_ldflags_filter=$_flags_filter
4365 add_host_ldflags $_flags $_ldflags
4366 HOSTLD_O=${_ld_o-$HOSTLD_O}
4367
4368 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4369     probe_cc depcc "$dep_cc"
4370     CCDEP=${_DEPCMD:-$DEPCMD}
4371     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4372     DEPCCFLAGS=$_flags
4373 fi
4374
4375 if $ar 2>&1 | grep -q Microsoft; then
4376     arflags="-nologo"
4377     ar_o='-out:$@'
4378 elif $ar 2>&1 | grep -q "\[D\] "; then
4379     arflags="rcD"
4380     ar_o='$@'
4381 else
4382     arflags="rc"
4383     ar_o='$@'
4384 fi
4385
4386 add_cflags $extra_cflags
4387 add_cxxflags $extra_cxxflags
4388 add_objcflags $extra_objcflags
4389 add_asflags $extra_cflags
4390
4391 if test -n "$sysroot"; then
4392     case "$cc_type" in
4393         gcc|llvm_gcc|clang)
4394             add_cppflags --sysroot="$sysroot"
4395             add_ldflags --sysroot="$sysroot"
4396         ;;
4397     esac
4398 fi
4399
4400 if test "$cpu" = host; then
4401     enabled cross_compile &&
4402         die "--cpu=host makes no sense when cross-compiling."
4403
4404     case "$cc_type" in
4405         gcc|llvm_gcc)
4406             check_native(){
4407                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4408                 sed -n "/cc1.*$1=/{
4409                             s/.*$1=\\([^ ]*\\).*/\\1/
4410                             p
4411                             q
4412                         }" $TMPE
4413             }
4414             cpu=$(check_native -march || check_native -mcpu)
4415         ;;
4416         clang)
4417             check_native(){
4418                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4419                 sed -n "/cc1.*-target-cpu /{
4420                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4421                             p
4422                             q
4423                         }" $TMPE
4424             }
4425             cpu=$(check_native -march)
4426         ;;
4427     esac
4428
4429     test "${cpu:-host}" = host &&
4430         die "--cpu=host not supported with compiler $cc"
4431 fi
4432
4433 # Deal with common $arch aliases
4434 case "$arch" in
4435     aarch64|arm64)
4436         arch="aarch64"
4437     ;;
4438     arm*|iPad*|iPhone*)
4439         arch="arm"
4440     ;;
4441     mips*|IP*)
4442         case "$arch" in
4443         *el)
4444             add_cppflags -EL
4445             add_ldflags -EL
4446         ;;
4447         *eb)
4448             add_cppflags -EB
4449             add_ldflags -EB
4450         ;;
4451         esac
4452         arch="mips"
4453     ;;
4454     parisc*|hppa*)
4455         arch="parisc"
4456     ;;
4457     "Power Macintosh"|ppc*|powerpc*)
4458         arch="ppc"
4459     ;;
4460     s390|s390x)
4461         arch="s390"
4462     ;;
4463     sh4|sh)
4464         arch="sh4"
4465     ;;
4466     sun4*|sparc*)
4467         arch="sparc"
4468     ;;
4469     tilegx|tile-gx)
4470         arch="tilegx"
4471     ;;
4472     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4473         arch="x86"
4474     ;;
4475 esac
4476
4477 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4478 enable $arch
4479
4480 # Add processor-specific flags
4481 if enabled aarch64; then
4482
4483     case $cpu in
4484         armv*)
4485             cpuflags="-march=$cpu"
4486         ;;
4487         *)
4488             cpuflags="-mcpu=$cpu"
4489         ;;
4490     esac
4491
4492 elif enabled alpha; then
4493
4494     cpuflags="-mcpu=$cpu"
4495
4496 elif enabled arm; then
4497
4498     check_arm_arch() {
4499         check_cpp_condition stddef.h \
4500             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4501             $cpuflags
4502     }
4503
4504     probe_arm_arch() {
4505         if   check_arm_arch 4;        then echo armv4
4506         elif check_arm_arch 4T;       then echo armv4t
4507         elif check_arm_arch 5;        then echo armv5
4508         elif check_arm_arch 5E;       then echo armv5e
4509         elif check_arm_arch 5T;       then echo armv5t
4510         elif check_arm_arch 5TE;      then echo armv5te
4511         elif check_arm_arch 5TEJ;     then echo armv5te
4512         elif check_arm_arch 6;        then echo armv6
4513         elif check_arm_arch 6J;       then echo armv6j
4514         elif check_arm_arch 6K;       then echo armv6k
4515         elif check_arm_arch 6Z;       then echo armv6z
4516         elif check_arm_arch 6ZK;      then echo armv6zk
4517         elif check_arm_arch 6T2;      then echo armv6t2
4518         elif check_arm_arch 7;        then echo armv7
4519         elif check_arm_arch 7A  7_A;  then echo armv7-a
4520         elif check_arm_arch 7S;       then echo armv7-a
4521         elif check_arm_arch 7R  7_R;  then echo armv7-r
4522         elif check_arm_arch 7M  7_M;  then echo armv7-m
4523         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4524         elif check_arm_arch 8A  8_A;  then echo armv8-a
4525         fi
4526     }
4527
4528     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4529
4530     case $cpu in
4531         armv*)
4532             cpuflags="-march=$cpu"
4533             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4534         ;;
4535         *)
4536             cpuflags="-mcpu=$cpu"
4537             case $cpu in
4538                 cortex-a*)                               subarch=armv7a  ;;
4539                 cortex-r*)                               subarch=armv7r  ;;
4540                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4541                 arm11*)                                  subarch=armv6   ;;
4542                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4543                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4544                 *)                             subarch=$(probe_arm_arch) ;;
4545             esac
4546         ;;
4547     esac
4548
4549     case "$subarch" in
4550         armv5t*)    enable fast_clz                ;;
4551         armv[6-8]*)
4552             enable fast_clz
4553             disabled fast_unaligned || enable fast_unaligned
4554             ;;
4555     esac
4556
4557 elif enabled avr32; then
4558
4559     case $cpu in
4560         ap7[02]0[0-2])
4561             subarch="avr32_ap"
4562             cpuflags="-mpart=$cpu"
4563         ;;
4564         ap)
4565             subarch="avr32_ap"
4566             cpuflags="-march=$cpu"
4567         ;;
4568         uc3[ab]*)
4569             subarch="avr32_uc"
4570             cpuflags="-mcpu=$cpu"
4571         ;;
4572         uc)
4573             subarch="avr32_uc"
4574             cpuflags="-march=$cpu"
4575         ;;
4576     esac
4577
4578 elif enabled bfin; then
4579
4580     cpuflags="-mcpu=$cpu"
4581
4582 elif enabled mips; then
4583
4584     cpuflags="-march=$cpu"
4585
4586     if [ "$cpu" != "generic" ]; then
4587         disable mips32r2
4588         disable mips32r5
4589         disable mips64r2
4590         disable mips32r6
4591         disable mips64r6
4592         disable loongson2
4593         disable loongson3
4594
4595         case $cpu in
4596             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4597                 enable mips32r2
4598                 disable msa
4599             ;;
4600             p5600|i6400|p6600)
4601                 disable mipsdsp
4602                 disable mipsdspr2
4603             ;;
4604             loongson*)
4605                 enable loongson2
4606                 enable loongson3
4607                 enable local_aligned
4608                 enable simd_align_16
4609                 enable fast_64bit
4610                 enable fast_clz
4611                 enable fast_cmov
4612                 enable fast_unaligned
4613                 disable aligned_stack
4614                 disable mipsfpu
4615                 disable mipsdsp
4616                 disable mipsdspr2
4617                 case $cpu in
4618                     loongson3*)
4619                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4620                     ;;
4621                     loongson2e)
4622                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4623                     ;;
4624                     loongson2f)
4625                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4626                     ;;
4627                 esac
4628             ;;
4629             *)
4630                 # Unknown CPU. Disable everything.
4631                 warn "unknown CPU. Disabling all MIPS optimizations."
4632                 disable mipsfpu
4633                 disable mipsdsp
4634                 disable mipsdspr2
4635                 disable msa
4636                 disable mmi
4637             ;;
4638         esac
4639
4640         case $cpu in
4641             24kc)
4642                 disable mipsfpu
4643                 disable mipsdsp
4644                 disable mipsdspr2
4645             ;;
4646             24kf*)
4647                 disable mipsdsp
4648                 disable mipsdspr2
4649             ;;
4650             24kec|34kc|1004kc)
4651                 disable mipsfpu
4652                 disable mipsdspr2
4653             ;;
4654             24kef*|34kf*|1004kf*)
4655                 disable mipsdspr2
4656             ;;
4657             74kc)
4658                 disable mipsfpu
4659             ;;
4660             p5600)
4661                 enable mips32r5
4662                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4663             ;;
4664             i6400)
4665                 enable mips64r6
4666                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4667             ;;
4668             p6600)
4669                 enable mips64r6
4670                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4671             ;;
4672         esac
4673     else
4674         # We do not disable anything. Is up to the user to disable the unwanted features.
4675         warn 'generic cpu selected'
4676     fi
4677
4678 elif enabled ppc; then
4679
4680     disable ldbrx
4681
4682     case $(tolower $cpu) in
4683         601|ppc601|powerpc601)
4684             cpuflags="-mcpu=601"
4685             disable altivec
4686         ;;
4687         603*|ppc603*|powerpc603*)
4688             cpuflags="-mcpu=603"
4689             disable altivec
4690         ;;
4691         604*|ppc604*|powerpc604*)
4692             cpuflags="-mcpu=604"
4693             disable altivec
4694         ;;
4695         g3|75*|ppc75*|powerpc75*)
4696             cpuflags="-mcpu=750"
4697             disable altivec
4698         ;;
4699         g4|745*|ppc745*|powerpc745*)
4700             cpuflags="-mcpu=7450"
4701             disable vsx
4702         ;;
4703         74*|ppc74*|powerpc74*)
4704             cpuflags="-mcpu=7400"
4705             disable vsx
4706         ;;
4707         g5|970|ppc970|powerpc970)
4708             cpuflags="-mcpu=970"
4709             disable vsx
4710         ;;
4711         power[3-6]*)
4712             cpuflags="-mcpu=$cpu"
4713             disable vsx
4714         ;;
4715         power[7-8]*)
4716             cpuflags="-mcpu=$cpu"
4717         ;;
4718         cell)
4719             cpuflags="-mcpu=cell"
4720             enable ldbrx
4721             disable vsx
4722         ;;
4723         e500mc)
4724             cpuflags="-mcpu=e500mc"
4725             disable altivec
4726         ;;
4727         e500v2)
4728             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4729             disable altivec
4730             disable dcbzl
4731         ;;
4732         e500)
4733             cpuflags="-mcpu=8540 -mhard-float"
4734             disable altivec
4735             disable dcbzl
4736         ;;
4737     esac
4738
4739 elif enabled sparc; then
4740
4741     case $cpu in
4742         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4743             cpuflags="-mcpu=$cpu"
4744         ;;
4745         ultrasparc*|niagara[234])
4746             cpuflags="-mcpu=$cpu"
4747         ;;
4748     esac
4749
4750 elif enabled x86; then
4751
4752     case $cpu in
4753         i[345]86|pentium)
4754             cpuflags="-march=$cpu"
4755             disable i686
4756             disable mmx
4757         ;;
4758         # targets that do NOT support nopl and conditional mov (cmov)
4759         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4760             cpuflags="-march=$cpu"
4761             disable i686
4762         ;;
4763         # targets that do support nopl and conditional mov (cmov)
4764         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4765         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4766         |amdfam10|barcelona|b[dt]ver*|znver*)
4767             cpuflags="-march=$cpu"
4768             enable i686
4769             enable fast_cmov
4770         ;;
4771         # targets that do support conditional mov but on which it's slow
4772         pentium4|pentium4m|prescott|nocona)
4773             cpuflags="-march=$cpu"
4774             enable i686
4775             disable fast_cmov
4776         ;;
4777     esac
4778
4779 fi
4780
4781 if [ "$cpu" != generic ]; then
4782     add_cflags  $cpuflags
4783     add_asflags $cpuflags
4784     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4785 fi
4786
4787 # compiler sanity check
4788 check_exec <<EOF
4789 int main(void){ return 0; }
4790 EOF
4791 if test "$?" != 0; then
4792     echo "$cc is unable to create an executable file."
4793     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4794         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4795         echo "Only do this if you know what cross compiling means."
4796     fi
4797     die "C compiler test failed."
4798 fi
4799
4800 add_cppflags -D_ISOC99_SOURCE
4801 add_cxxflags -D__STDC_CONSTANT_MACROS
4802 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4803
4804 # some compilers silently accept -std=c11, so we also need to check that the
4805 # version macro is defined properly
4806 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4807     add_cflags -std=c11 ||
4808     check_cflags -std=c99
4809
4810 check_cppflags -D_FILE_OFFSET_BITS=64
4811 check_cppflags -D_LARGEFILE_SOURCE
4812
4813 add_host_cppflags -D_ISOC99_SOURCE
4814 check_host_cflags -std=c99
4815 check_host_cflags -Wall
4816 check_host_cflags $host_cflags_speed
4817
4818 check_64bit(){
4819     arch32=$1
4820     arch64=$2
4821     expr=$3
4822     check_code cc "" "int test[2*($expr) - 1]" &&
4823         subarch=$arch64 || subarch=$arch32
4824     enable $subarch
4825 }
4826
4827 case "$arch" in
4828     aarch64|alpha|ia64)
4829         enabled shared && enable_weak pic
4830     ;;
4831     mips)
4832         check_64bit mips mips64 '_MIPS_SIM > 1'
4833         enabled shared && enable_weak pic
4834     ;;
4835     parisc)
4836         check_64bit parisc parisc64 'sizeof(void *) > 4'
4837         enabled shared && enable_weak pic
4838     ;;
4839     ppc)
4840         check_64bit ppc ppc64 'sizeof(void *) > 4'
4841         enabled shared && enable_weak pic
4842     ;;
4843     s390)
4844         check_64bit s390 s390x 'sizeof(void *) > 4'
4845         enabled shared && enable_weak pic
4846     ;;
4847     sparc)
4848         check_64bit sparc sparc64 'sizeof(void *) > 4'
4849         enabled shared && enable_weak pic
4850     ;;
4851     x86)
4852         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4853         # Treat x32 as x64 for now. Note it also needs pic if shared
4854         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4855             subarch=x86_64 && enable x86_64 && disable x86_32
4856         if enabled x86_64; then
4857             enabled shared && enable_weak pic
4858             objformat=elf64
4859         fi
4860     ;;
4861 esac
4862
4863 # OS specific
4864 case $target_os in
4865     aix)
4866         SHFLAGS=-shared
4867         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4868         enabled shared && add_ldflags -Wl,-brtl
4869         arflags='-Xany -r -c'
4870         ;;
4871     android)
4872         disable symver
4873         enable section_data_rel_ro
4874         SLIB_INSTALL_NAME='$(SLIBNAME)'
4875         SLIB_INSTALL_LINKS=
4876         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4877         ;;
4878     haiku)
4879         prefix_default="/boot/common"
4880         network_extralibs="-lnetwork"
4881         host_extralibs=
4882         ;;
4883     sunos)
4884         SHFLAGS='-shared -Wl,-h,$$(@F)'
4885         enabled x86 && append SHFLAGS -mimpure-text
4886         network_extralibs="-lsocket -lnsl"
4887         add_cppflags -D__EXTENSIONS__
4888         # When using suncc to build, the Solaris linker will mark
4889         # an executable with each instruction set encountered by
4890         # the Solaris assembler.  As our libraries contain their own
4891         # guards for processor-specific code, instead suppress
4892         # generation of the HWCAPS ELF section on Solaris x86 only.
4893         enabled_all suncc x86 &&
4894             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4895             add_ldflags -Wl,-M,mapfile
4896         nm_default='nm -P -g'
4897         version_script='-M'
4898         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4899         ;;
4900     netbsd)
4901         disable symver
4902         oss_indev_extralibs="-lossaudio"
4903         oss_outdev_extralibs="-lossaudio"
4904         enabled gcc || check_ldflags -Wl,-zmuldefs
4905         ;;
4906     openbsd|bitrig)
4907         disable symver
4908         SHFLAGS='-shared'
4909         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4910         SLIB_INSTALL_LINKS=
4911         oss_indev_extralibs="-lossaudio"
4912         oss_outdev_extralibs="-lossaudio"
4913         ;;
4914     dragonfly)
4915         disable symver
4916         ;;
4917     freebsd)
4918         ;;
4919     bsd/os)
4920         add_extralibs -lpoll -lgnugetopt
4921         strip="strip -d"
4922         ;;
4923     darwin)
4924         enabled ppc && add_asflags -force_cpusubtype_ALL
4925         install_name_dir_default='$(SHLIBDIR)'
4926         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4927         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4928         strip="${strip} -x"
4929         add_ldflags -Wl,-dynamic,-search_paths_first
4930         check_cflags -Werror=partial-availability
4931         SLIBSUF=".dylib"
4932         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4933         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4934         enabled x86_64 && objformat="macho64" || objformat="macho32"
4935         enabled_any pic shared x86_64 ||
4936             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4937         check_header dispatch/dispatch.h &&
4938             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4939         if test -n "$sysroot"; then
4940             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
4941             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
4942         fi
4943         version_script='-exported_symbols_list'
4944         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4945         ;;
4946     msys*)
4947         die "Native MSYS builds are discouraged, please use the MINGW environment."
4948         ;;
4949     mingw32*|mingw64*)
4950         target_os=mingw32
4951         if enabled shared; then
4952             # Cannot build both shared and static libs when using dllimport.
4953             disable static
4954         fi
4955         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4956         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4957         shlibdir_default="$bindir_default"
4958         SLIBPREF=""
4959         SLIBSUF=".dll"
4960         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4961         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4962         SLIB_EXTRA_CMD='cp $(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4963         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4964         SLIB_INSTALL_LINKS=
4965         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4966         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4967         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4968         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
4969         enabled x86_64 && objformat="win64" || objformat="win32"
4970         ranlib=:
4971         enable dos_paths
4972         check_ldflags -Wl,--nxcompat,--dynamicbase
4973         # Lets work around some stupidity in binutils.
4974         # ld will strip relocations from executables even though we need them
4975         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4976         # however ld then forgets what the entry point should be (oops) so we
4977         # have to manually (re)set it.
4978         if enabled x86_32; then
4979             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4980         elif enabled x86_64; then
4981             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4982             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4983             # Set image base >4GB for extra entropy with HEASLR
4984             add_ldexeflags -Wl,--image-base,0x140000000
4985             append SHFLAGS -Wl,--image-base,0x180000000
4986         fi
4987         ;;
4988     win32|win64)
4989         disable symver
4990         if enabled shared; then
4991             # Link to the import library instead of the normal static library
4992             # for shared libs.
4993             LD_LIB='%.lib'
4994             # Cannot build both shared and static libs with MSVC or icl.
4995             disable static
4996         fi
4997         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4998         shlibdir_default="$bindir_default"
4999         SLIBPREF=""
5000         SLIBSUF=".dll"
5001         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5002         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5003         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5004         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5005         SLIB_INSTALL_LINKS=
5006         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5007         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5008         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5009         enabled x86_64 && objformat="win64" || objformat="win32"
5010         ranlib=:
5011         enable dos_paths
5012         ;;
5013     cygwin*)
5014         target_os=cygwin
5015         shlibdir_default="$bindir_default"
5016         SLIBPREF="cyg"
5017         SLIBSUF=".dll"
5018         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5019         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5020         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5021         SLIB_INSTALL_LINKS=
5022         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5023         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5024         enabled x86_64 && objformat="win64" || objformat="win32"
5025         enable dos_paths
5026         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5027         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5028         ;;
5029     *-dos|freedos|opendos)
5030         network_extralibs="-lsocket"
5031         objformat="coff"
5032         enable dos_paths
5033         add_cppflags -U__STRICT_ANSI__
5034         ;;
5035     linux)
5036         enable section_data_rel_ro
5037         enabled_any arm aarch64 && enable_weak linux_perf
5038         ;;
5039     irix*)
5040         target_os=irix
5041         ranlib="echo ignoring ranlib"
5042         ;;
5043     os/2*)
5044         strip="lxlite -CS"
5045         striptype=""
5046         objformat="aout"
5047         add_cppflags -D_GNU_SOURCE
5048         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5049         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5050         LIBSUF="_s.a"
5051         SLIBPREF=""
5052         SLIBSUF=".dll"
5053         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5054         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5055         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5056             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5057             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5058             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5059             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5060         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5061             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5062         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5063         SLIB_INSTALL_LINKS=
5064         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5065         enable dos_paths
5066         enable_weak os2threads
5067         ;;
5068     gnu/kfreebsd)
5069         add_cppflags -D_BSD_SOURCE
5070         ;;
5071     gnu)
5072         ;;
5073     qnx)
5074         add_cppflags -D_QNX_SOURCE
5075         network_extralibs="-lsocket"
5076         ;;
5077     symbian)
5078         SLIBSUF=".dll"
5079         enable dos_paths
5080         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5081         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5082         add_ldflags -Wl,--target1-abs,--no-undefined \
5083                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5084                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5085         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5086                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5087                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5088         ;;
5089     minix)
5090         ;;
5091     none)
5092         ;;
5093     *)
5094         die "Unknown OS '$target_os'."
5095         ;;
5096 esac
5097
5098 # test if creating links works
5099 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5100 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5101 mkdir "$link_dest"
5102 $ln_s "$link_dest" "$link_name"
5103 touch "$link_dest/test_file"
5104 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5105     # create link to source path
5106     [ -e src ] && rm src
5107     $ln_s "$source_path" src
5108     source_link=src
5109 else
5110     # creating directory links doesn't work
5111     # fall back to using the full source path
5112     source_link="$source_path"
5113 fi
5114 # cleanup
5115 rm -r "$link_dest"
5116 rm -r "$link_name"
5117
5118 # determine libc flavour
5119
5120 probe_libc(){
5121     pfx=$1
5122     pfx_no_=${pfx%_}
5123     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5124     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5125         eval ${pfx}libc_type=uclibc
5126         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5127     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5128         eval ${pfx}libc_type=glibc
5129         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5130     # MinGW headers can be installed on Cygwin, so check for newlib first.
5131     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5132         eval ${pfx}libc_type=newlib
5133         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5134     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5135     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5136         eval ${pfx}libc_type=mingw64
5137         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5138             add_compat msvcrt/snprintf.o
5139             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5140         fi
5141         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5142         eval test \$${pfx_no_}cc_type = "gcc" &&
5143             add_${pfx}cppflags -D__printf__=__gnu_printf__
5144     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5145          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5146         eval ${pfx}libc_type=mingw32
5147         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5148             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5149             die "ERROR: MinGW32 runtime version must be >= 3.15."
5150         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5151         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5152             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5153         check_${pfx}cpp_condition windows.h "defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0502" &&
5154             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5155         eval test \$${pfx_no_}cc_type = "gcc" &&
5156             add_${pfx}cppflags -D__printf__=__gnu_printf__
5157     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5158         eval ${pfx}libc_type=msvcrt
5159         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5160             if [ "$pfx" = host_ ]; then
5161                 add_host_cppflags -Dsnprintf=_snprintf
5162             else
5163                 add_compat strtod.o strtod=avpriv_strtod
5164                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5165                                              _snprintf=avpriv_snprintf  \
5166                                              vsnprintf=avpriv_vsnprintf
5167             fi
5168         fi
5169         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5170         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5171         # 0x601 by default unless something else is set by the user.
5172         # This can easily lead to us detecting functions only present
5173         # in such new versions and producing binaries requiring windows 7.0.
5174         # Therefore explicitly set the default to XP unless the user has
5175         # set something else on the command line.
5176         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5177         # family. For these cases, configure is free to use any functions
5178         # found in the SDK headers by default. (Alternatively, we could force
5179         # _WIN32_WINNT to 0x0602 in that case.)
5180         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5181             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5182 #ifdef WINAPI_FAMILY
5183 #include <winapifamily.h>
5184 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5185 #error not desktop
5186 #endif
5187 #endif
5188 EOF
5189         if [ "$pfx" = "" ]; then
5190             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5191             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5192         fi
5193     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5194         eval ${pfx}libc_type=klibc
5195     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5196         eval ${pfx}libc_type=bionic
5197     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5198         eval ${pfx}libc_type=solaris
5199         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5200     fi
5201     check_${pfx}cc <<EOF
5202 #include <time.h>
5203 void *v = localtime_r;
5204 EOF
5205 test "$?" != 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
5206 #include <time.h>
5207 void *v = localtime_r;
5208 EOF
5209
5210     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5211 }
5212
5213 probe_libc
5214 probe_libc host_
5215
5216 # hacks for compiler/libc/os combinations
5217
5218 case $libc_type in
5219     bionic)
5220         add_compat strtod.o strtod=avpriv_strtod
5221         ;;
5222 esac
5223
5224 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5225     add_cppflags '-I\$(SRC_PATH)/compat/float'
5226
5227 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5228
5229 set_default libdir
5230 : ${shlibdir_default:="$libdir"}
5231 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5232
5233 set_default $PATHS_LIST
5234 set_default nm
5235
5236 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5237
5238 enable_weak_pic() {
5239     disabled pic && return
5240     enable pic
5241     add_cppflags -DPIC
5242     case "$target_os" in
5243     mingw*|cygwin*|win*)
5244         ;;
5245     *)
5246         add_cflags -fPIC
5247         add_asflags -fPIC
5248         ;;
5249     esac
5250 }
5251
5252 enabled pic && enable_weak_pic
5253
5254 check_cc <<EOF || die "Symbol mangling check failed."
5255 int ff_extern;
5256 EOF
5257 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5258 extern_prefix=${sym%%ff_extern*}
5259
5260 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5261
5262 _restrict=
5263 for restrict_keyword in restrict __restrict__ __restrict; do
5264     check_cc <<EOF && _restrict=$restrict_keyword && break
5265 void foo(char * $restrict_keyword p);
5266 EOF
5267 done
5268
5269 check_cc <<EOF && enable pragma_deprecated
5270 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5271 EOF
5272
5273 check_cc <<EOF || die "endian test failed"
5274 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5275 EOF
5276 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5277
5278 check_cc <<EOF && enable const_nan
5279 #include <math.h>
5280 void foo(void) { struct { double d; } static const bar[] = { { NAN } }; }
5281 EOF
5282
5283 if ! enabled ppc64 || enabled bigendian; then
5284     disable vsx
5285 fi
5286
5287 check_gas() {
5288     log "check_gas using '$as' as AS"
5289     # :vararg is used on aarch64, arm and ppc altivec
5290     check_as <<EOF || return 1
5291 .macro m n, y:vararg=0
5292 \n: .int \y
5293 .endm
5294 m x
5295 EOF
5296     # .altmacro is only used in arm asm
5297     ! enabled arm || check_as <<EOF || return 1
5298 .altmacro
5299 EOF
5300     enable gnu_as
5301     return 0
5302 }
5303
5304 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5305     nogas=:
5306     enabled_any arm aarch64 && nogas=die
5307     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5308     as_noop=-v
5309
5310     case $as_type in
5311         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5312         gcc)  gaspp_as_type=gas ;;
5313         *)    gaspp_as_type=$as_type ;;
5314     esac
5315
5316     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5317
5318     test "${as#*gas-preprocessor.pl}" != "$as" ||
5319     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5320         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5321
5322     if ! check_gas ; then
5323         as=${gas:=$as}
5324         check_gas || \
5325             $nogas "GNU assembler not found, install/update gas-preprocessor"
5326     fi
5327
5328     check_as <<EOF && enable as_func
5329 .func test
5330 .endfunc
5331 EOF
5332 fi
5333
5334 check_inline_asm inline_asm_labels '"1:\n"'
5335
5336 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5337
5338 if enabled aarch64; then
5339     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5340     # internal assembler in clang 3.3 does not support this instruction
5341     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5342     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5343
5344     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5345
5346 elif enabled alpha; then
5347
5348     check_cflags -mieee
5349
5350 elif enabled arm; then
5351
5352     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5353
5354     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5355 float func(float a, float b){ return a+b; }
5356 EOF
5357
5358     enabled thumb && check_cflags -mthumb || check_cflags -marm
5359
5360     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5361         enable vfp_args
5362     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5363         enable vfp_args
5364     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5365         case "${cross_prefix:-$cc}" in
5366             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5367             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5368 __asm__ (".eabi_attribute 28, 1");
5369 int main(void) { return 0; }
5370 EOF
5371         esac
5372         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5373     fi
5374
5375     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5376     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5377     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5378     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5379     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5380     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5381     enabled setend  && check_insn setend  'setend be'
5382
5383     [ $target_os = linux ] || [ $target_os = android ] ||
5384         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5385             $ARCH_EXT_LIST_ARM
5386
5387     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5388
5389     check_as <<EOF && enable as_arch_directive
5390 .arch armv7-a
5391 EOF
5392     check_as <<EOF && enable as_fpu_directive
5393 .fpu neon
5394 EOF
5395
5396     # llvm's integrated assembler supports .object_arch from llvm 3.5
5397     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5398         check_as <<EOF && enable as_object_arch
5399 .object_arch armv4
5400 EOF
5401
5402     # MS armasm fails to assemble our PIC constructs
5403     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5404
5405 elif enabled mips; then
5406
5407     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5408     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5409     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5410
5411     # Enable minimum ISA based on selected options
5412     if enabled mips64; then
5413         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5414         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5415         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5416     else
5417         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5418         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5419         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5420         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5421     fi
5422
5423     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5424     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5425     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5426     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5427     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5428
5429     if enabled bigendian && enabled msa; then
5430         disable msa
5431     fi
5432
5433 elif enabled parisc; then
5434
5435     if enabled gcc; then
5436         case $($cc -dumpversion) in
5437             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5438         esac
5439     fi
5440
5441 elif enabled ppc; then
5442
5443     enable local_aligned
5444
5445     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5446     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5447     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5448     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5449
5450     if enabled altivec; then
5451         check_cflags -maltivec -mabi=altivec
5452
5453         # check if our compiler supports Motorola AltiVec C API
5454         check_code cc altivec.h "vector signed int v1 = (vector signed int) { 0 };
5455                                  vector signed int v2 = (vector signed int) { 1 };
5456                                  v1 = vec_add(v1, v2);" ||
5457             disable altivec
5458
5459         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5460     fi
5461
5462     if enabled vsx; then
5463         check_cflags -mvsx &&
5464         check_code cc altivec.h "int v[4] = { 0 };
5465                                  vector signed int v1 = vec_vsx_ld(0, v);" ||
5466             disable vsx
5467     fi
5468
5469     if enabled power8; then
5470         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5471     fi
5472
5473 elif enabled x86; then
5474
5475     check_builtin rdtsc    intrin.h   "__rdtsc()"
5476     check_builtin mm_empty mmintrin.h "_mm_empty()"
5477
5478     enable local_aligned
5479
5480     # check whether EBP is available on x86
5481     # As 'i' is stored on the stack, this program will crash
5482     # if the base pointer is used to access it because the
5483     # base pointer is cleared in the inline assembly code.
5484     check_exec_crash <<EOF && enable ebp_available
5485 volatile int i=0;
5486 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5487 return i;
5488 EOF
5489
5490     # check whether EBX is available on x86
5491     check_inline_asm ebx_available '""::"b"(0)' &&
5492         check_inline_asm ebx_available '"":::"%ebx"'
5493
5494     # check whether xmm clobbers are supported
5495     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5496
5497     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5498         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5499
5500     # check whether binutils is new enough to compile SSSE3/MMXEXT
5501     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5502     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5503
5504     probe_x86asm(){
5505         x86asmexe_probe=$1
5506         if check_cmd $x86asmexe_probe -v; then
5507             x86asmexe=$x86asmexe_probe
5508             x86asm_type=nasm
5509             x86asm_debug="-g -F dwarf"
5510             X86ASMDEP=
5511             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5512         elif check_cmd $x86asmexe_probe --version; then
5513             x86asmexe=$x86asmexe_probe
5514             x86asm_type=yasm
5515             x86asm_debug="-g dwarf2"
5516             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5517             X86ASM_DEPFLAGS=
5518         fi
5519         check_x86asm "movbe ecx, [5]" && enable x86asm
5520     }
5521
5522     if ! disabled_any asm mmx x86asm; then
5523         disable x86asm
5524         for program in $x86asmexe nasm yasm; do
5525             probe_x86asm $program && break
5526         done
5527         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5528         X86ASMFLAGS="-f $objformat"
5529         enabled pic               && append X86ASMFLAGS "-DPIC"
5530         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5531         case "$objformat" in
5532             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5533         esac
5534
5535         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5536         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5537         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5538         check_x86asm "CPU amdnop" || disable cpunop
5539     fi
5540
5541     case "$cpu" in
5542         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5543             disable fast_clz
5544         ;;
5545     esac
5546
5547 fi
5548
5549 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5550
5551 check_ldflags -Wl,--as-needed
5552 check_ldflags -Wl,-z,noexecstack
5553
5554 if ! disabled network; then
5555     check_func getaddrinfo $network_extralibs
5556     check_func inet_aton $network_extralibs
5557
5558     check_type netdb.h "struct addrinfo"
5559     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5560     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5561     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5562     check_type poll.h "struct pollfd"
5563     check_type netinet/sctp.h "struct sctp_event_subscribe"
5564     check_struct "sys/socket.h" "struct msghdr" msg_flags
5565     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5566     check_type netinet/in.h "struct sockaddr_in6"
5567     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5568     check_type "sys/types.h sys/socket.h" socklen_t
5569
5570     # Prefer arpa/inet.h over winsock2
5571     if check_header arpa/inet.h ; then
5572         check_func closesocket
5573     elif check_header winsock2.h ; then
5574         check_func_headers winsock2.h closesocket -lws2 &&
5575             network_extralibs="-lws2" ||
5576         { check_func_headers winsock2.h closesocket -lws2_32 &&
5577             network_extralibs="-lws2_32"; } || disable winsock2_h network
5578         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5579
5580         check_type ws2tcpip.h socklen_t
5581         check_type ws2tcpip.h "struct addrinfo"
5582         check_type ws2tcpip.h "struct group_source_req"
5583         check_type ws2tcpip.h "struct ip_mreq_source"
5584         check_type ws2tcpip.h "struct ipv6_mreq"
5585         check_type winsock2.h "struct pollfd"
5586         check_struct winsock2.h "struct sockaddr" sa_len
5587         check_type ws2tcpip.h "struct sockaddr_in6"
5588         check_type ws2tcpip.h "struct sockaddr_storage"
5589     else
5590         disable network
5591     fi
5592 fi
5593
5594 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5595 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5596 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5597 check_builtin sarestart signal.h "SA_RESTART"
5598 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5599 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5600 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5601 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5602
5603 case "$custom_allocator" in
5604     jemalloc)
5605         # jemalloc by default does not use a prefix
5606         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5607     ;;
5608     tcmalloc)
5609         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5610         malloc_prefix=tc_
5611     ;;
5612 esac
5613
5614 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5615 check_func  ${malloc_prefix}memalign            && enable memalign
5616 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5617
5618 check_func  access
5619 check_func_headers stdlib.h arc4random
5620 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5621 check_func  fcntl
5622 check_func  fork
5623 check_func  gethrtime
5624 check_func  getopt
5625 check_func  getrusage
5626 check_func  gettimeofday
5627 check_func  isatty
5628 check_func  mkstemp
5629 check_func  mmap
5630 check_func  mprotect
5631 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5632 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5633 check_func  sched_getaffinity
5634 check_func  setrlimit
5635 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5636 check_func  strerror_r
5637 check_func  sysconf
5638 check_func  sysctl
5639 check_func  usleep
5640
5641 check_func_headers conio.h kbhit
5642 check_func_headers io.h setmode
5643 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5644 check_func_headers mach/mach_time.h mach_absolute_time
5645 check_func_headers stdlib.h getenv
5646 check_func_headers sys/stat.h lstat
5647
5648 check_func_headers windows.h GetProcessAffinityMask
5649 check_func_headers windows.h GetProcessTimes
5650 check_func_headers windows.h GetSystemTimeAsFileTime
5651 check_func_headers windows.h LoadLibrary
5652 check_func_headers windows.h MapViewOfFile
5653 check_func_headers windows.h PeekNamedPipe
5654 check_func_headers windows.h SetConsoleTextAttribute
5655 check_func_headers windows.h SetConsoleCtrlHandler
5656 check_func_headers windows.h Sleep
5657 check_func_headers windows.h VirtualAlloc
5658 check_struct windows.h "CONDITION_VARIABLE" Ptr
5659 check_func_headers glob.h glob
5660 enabled xlib &&
5661     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5662
5663 check_header direct.h
5664 check_header dirent.h
5665 check_header dxgidebug.h
5666 check_header dxva.h
5667 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5668 check_header io.h
5669 check_header libcrystalhd/libcrystalhd_if.h
5670 check_header malloc.h
5671 check_header net/udplite.h
5672 check_header poll.h
5673 check_header sys/param.h
5674 check_header sys/resource.h
5675 check_header sys/select.h
5676 check_header sys/time.h
5677 check_header sys/un.h
5678 check_header termios.h
5679 check_header unistd.h
5680 check_header valgrind/valgrind.h
5681 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5682 check_header windows.h
5683 check_header X11/extensions/XvMClib.h
5684 check_header asm/types.h
5685
5686 # it seems there are versions of clang in some distros that try to use the
5687 # gcc headers, which explodes for stdatomic
5688 # so we also check that atomics actually work here
5689 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5690
5691 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5692 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5693 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5694 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5695 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5696
5697 enabled appkit       && check_apple_framework AppKit
5698 enabled audiotoolbox && check_apple_framework AudioToolbox
5699 enabled avfoundation && check_apple_framework AVFoundation
5700 enabled coreimage    && check_apple_framework CoreImage
5701 enabled videotoolbox && check_apple_framework VideoToolbox
5702
5703 check_apple_framework CoreFoundation
5704 check_apple_framework CoreMedia
5705 check_apple_framework CoreVideo
5706
5707 enabled avfoundation && {
5708     disable coregraphics applicationservices
5709     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5710     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5711
5712 enabled videotoolbox && {
5713     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5714     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5715 }
5716
5717 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5718
5719 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5720 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5721 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5722 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5723 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5724
5725 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5726 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
5727 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5728 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5729 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5730 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5731 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5732 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5733 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5734 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5735
5736 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5737
5738 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5739
5740 if ! disabled w32threads && ! enabled pthreads; then
5741     check_func_headers "windows.h process.h" _beginthreadex &&
5742         enable w32threads || disable w32threads
5743     if ! enabled w32threads && enabled winrt; then
5744         check_func_headers "windows.h" CreateThread &&
5745             enable w32threads || disable w32threads
5746     fi
5747 fi
5748
5749 # check for some common methods of building with pthread support
5750 # do this before the optional library checks as some of them require pthreads
5751 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5752     if check_lib pthreads pthread.h pthread_join   -pthread &&
5753        check_lib pthreads pthread.h pthread_create -pthread; then
5754         add_cflags -pthread
5755     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5756          check_lib pthreads pthread.h pthread_create -pthreads; then
5757         add_cflags -pthreads
5758     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5759          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5760         add_cflags -ldl -pthread
5761     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5762          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5763         :
5764     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5765          check_lib pthreads pthread.h pthread_create -lpthread; then
5766         :
5767     elif check_func pthread_join && check_func pthread_create; then
5768         enable pthreads
5769     fi
5770     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5771
5772     if enabled pthreads; then
5773         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
5774         check_func pthread_cancel $pthreads_extralibs
5775     fi
5776 fi
5777
5778 enabled  zlib && check_lib zlib   zlib.h      zlibVersion    -lz
5779 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5780 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5781
5782 # On some systems dynamic loading requires no extra linker flags
5783 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
5784
5785 check_lib libm math.h sin -lm
5786
5787 atan2f_args=2
5788 copysign_args=2
5789 hypot_args=2
5790 ldexpf_args=2
5791 powf_args=2
5792
5793 for func in $MATH_FUNCS; do
5794     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
5795 done
5796
5797 for func in $COMPLEX_FUNCS; do
5798     eval check_complexfunc $func \${${func}_args:-1}
5799 done
5800
5801 # these are off by default, so fail if requested and not available
5802 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5803 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5804 enabled decklink          && { require_header DeckLinkAPI.h &&
5805                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5806 enabled libndi_newtek     && require_header Processing.NDI.Lib.h
5807 enabled frei0r            && require_header frei0r.h
5808 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5809 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
5810 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5811 enabled ladspa            && require_header ladspa.h
5812 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv-0/lilv/lilv.h" lilv_world_new
5813 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5814 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
5815 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
5816 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
5817 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5818                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5819                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5820 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
5821 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
5822 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
5823 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5824                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5825                                  warn "using libfdk without pkg-config"; } }
5826 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"
5827 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5828 enabled fontconfig        && enable libfontconfig
5829 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
5830 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5831 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
5832 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
5833                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
5834 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5835                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5836                                done || die "ERROR: libgsm not found"; }
5837 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
5838 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5839 # While it may appear that require is being used as a pkg-config
5840 # fallback for libmfx, it is actually being used to detect a different
5841 # installation route altogether.  If libmfx is installed via the Intel
5842 # Media SDK or Intel Media Server Studio, these don't come with
5843 # pkg-config support.  Instead, users should make sure that the build
5844 # can find the libraries and headers through other means.
5845 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
5846                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
5847 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
5848 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5849 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa $zlib_extralibs
5850 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
5851                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
5852                                die "ERROR: libnpp not found"; }
5853 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5854 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5855 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5856                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
5857                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5858                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
5859 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
5860 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
5861                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
5862 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
5863 enabled libopus           && {
5864     enabled libopus_decoder && {
5865         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
5866     }
5867     enabled libopus_encoder && {
5868         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
5869     }
5870 }
5871 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
5872 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
5873 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
5874 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
5875 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
5876 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
5877                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
5878 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
5879 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
5880 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
5881 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
5882 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
5883 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5884 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5885                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5886                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5887 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
5888 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5889 enabled libvmaf           && require_pkg_config libvmaf libvmaf libvmaf.h compute_vmaf
5890 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5891 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
5892                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
5893
5894 enabled libvpx            && {
5895     enabled libvpx_vp8_decoder && {
5896         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5897             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_dec_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
5898                 die "ERROR: libvpx decoder version must be >=1.4.0";
5899     }
5900     enabled libvpx_vp8_encoder && {
5901         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5902             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
5903                 die "ERROR: libvpx encoder version must be >=1.4.0";
5904     }
5905     enabled libvpx_vp9_decoder && {
5906         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5907             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" -lvpx
5908     }
5909     enabled libvpx_vp9_encoder && {
5910         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5911             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" -lvpx
5912     }
5913     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5914         die "libvpx enabled but no supported decoders found"
5915     fi
5916 }
5917
5918 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5919 enabled libwebp           && {
5920     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5921     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
5922 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
5923                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
5924                                  warn "using libx264 without pkg-config"; } } &&
5925                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
5926                              { check_cpp_condition x264.h "X264_MPEG2" &&
5927                                enable libx262; }
5928 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
5929                              require_cpp_condition x265.h "X265_BUILD >= 68"
5930 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
5931 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5932 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.3.0" zimg.h zimg_get_api_version
5933 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
5934 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
5935                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5936                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5937 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
5938 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5939 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5940                                { ! enabled cross_compile &&
5941                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
5942                                  add_ldflags -L/opt/vc/lib/ &&
5943                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
5944                                die "ERROR: mmal not found" &&
5945                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
5946 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5947                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
5948                                die "ERROR: openal not found"; } &&
5949                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5950                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5951 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5952                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5953                                die "ERROR: opencl not found"; } &&
5954                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5955                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5956                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5957 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
5958                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5959                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5960                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5961                                die "ERROR: opengl not found."
5962                              }
5963 enabled omx               && require_header OMX_Core.h
5964 enabled omx_rpi           && { check_header OMX_Core.h ||
5965                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
5966                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
5967 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
5968                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
5969                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5970                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5971                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5972                                die "ERROR: openssl not found"; }
5973 enabled rkmpp             && { { require_pkg_config rkmpp rockchip_mpp rockchip/rk_mpi.h mpp_create ||
5974                                  die "ERROR : Rockchip MPP was not found."; } &&
5975                                { check_func_headers rockchip/rk_mpi_cmd.h "MPP_DEC_GET_FREE_PACKET_SLOT_COUNT" ||
5976                                  die "ERROR: Rockchip MPP is outdated, please get a more recent one."; } &&
5977                                { enabled libdrm ||
5978                                  die "ERROR: rkmpp requires --enable-libdrm"; }
5979                              }
5980
5981 if enabled gcrypt; then
5982     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5983     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5984         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5985         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
5986         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
5987             die "ERROR: gcrypt not found"
5988         add_cflags $gcrypt_cflags
5989     else
5990         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5991     fi
5992 fi
5993
5994 if enabled sdl2; then
5995     SDL2_CONFIG="${cross_prefix}sdl2-config"
5996     if test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent; then
5997         check_func SDL_Init $sdl2_extralibs $sdl2_cflags ||
5998             disable sdl2
5999     elif "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6000         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6001         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6002         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6003         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6004         check_func SDL_Init $sdl2_extralibs $sdl2_cflags &&
6005             enable sdl2
6006     fi
6007     if test $target_os = "mingw32"; then
6008         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6009     fi
6010 fi
6011
6012 if enabled decklink; then
6013     case $target_os in
6014         mingw32*|mingw64*|win32|win64)
6015             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6016             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6017             ;;
6018     esac
6019 fi
6020
6021 enabled securetransport &&
6022     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6023     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6024         disable securetransport
6025
6026 enabled securetransport &&
6027     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6028
6029 enabled schannel &&
6030     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6031     check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6032     schannel_extralibs="-lsecur32" ||
6033         disable schannel
6034
6035 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6036 enabled makeinfo \
6037     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6038     && enable makeinfo_html || disable makeinfo_html
6039 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6040 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6041 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6042 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6043
6044 # check V4L2 codecs available in the API
6045 check_header linux/fb.h
6046 check_header linux/videodev2.h
6047 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6048 check_code cc linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;" || disable v4l2_m2m
6049 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;" && enable vc1_v4l2_m2m
6050 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;" && enable mpeg1_v4l2_m2m
6051 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;" && enable mpeg2_v4l2_m2m
6052 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;" && enable mpeg4_v4l2_m2m
6053 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;" && enable hevc_v4l2_m2m
6054 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H263;" && enable h263_v4l2_m2m
6055 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H264;" && enable h264_v4l2_m2m
6056 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;" && enable vp8_v4l2_m2m
6057 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;" && enable vp9_v4l2_m2m
6058
6059 check_header sys/videoio.h
6060 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6061
6062 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6063 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6064 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6065 # w32api 3.12 had it defined wrong
6066 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6067
6068 check_type "dshow.h" IBaseFilter
6069
6070 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6071 check_header "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6072     check_header "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6073     check_header "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6074     check_header "dev/ic/bt8xx.h"
6075
6076 if check_struct sys/soundcard.h audio_buf_info bytes; then
6077     enable_sanitized sys/soundcard.h
6078 else
6079     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6080     #include <sys/soundcard.h>
6081     audio_buf_info abc;
6082 EOF
6083 fi
6084
6085 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6086     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6087
6088 enabled libjack &&
6089     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6090
6091 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6092
6093 if enabled libcdio; then
6094     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6095     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6096     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6097     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6098     die "ERROR: No usable libcdio/cdparanoia found"
6099 fi
6100
6101 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6102     disable libxcb_shm libxcb_shape libxcb_xfixes
6103
6104 if enabled libxcb; then
6105     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6106     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6107     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6108 fi
6109
6110 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6111
6112 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6113 # the desktop api partition
6114 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6115 #ifdef WINAPI_FAMILY
6116 #include <winapifamily.h>
6117 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6118 #error desktop, not uwp
6119 #else
6120 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6121 #endif
6122 #else
6123 #error no family set
6124 #endif
6125 EOF
6126
6127 enabled vaapi &&
6128     check_lib vaapi va/va.h vaInitialize -lva
6129
6130 enabled vaapi &&
6131     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6132     disable vaapi
6133
6134 enabled vaapi &&
6135     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6136
6137 enabled vaapi &&
6138     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6139
6140 enabled vaapi &&
6141     check_cpp_condition "va/va.h" "VA_CHECK_VERSION(1, 0, 0)" &&
6142     enable vaapi_1
6143
6144 if enabled_all opencl vaapi ; then
6145     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6146         enable opencl_vaapi_beignet
6147     if enabled libmfx ; then
6148         check_type "CL/cl.h CL/va_ext.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6149             enable opencl_vaapi_intel_media
6150     fi
6151 fi
6152
6153 if enabled_all opencl dxva2 ; then
6154     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6155         enable opencl_dxva2
6156 fi
6157
6158 if enabled_all opencl d3d11va ; then
6159     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6160         enable opencl_d3d11
6161 fi
6162
6163 if enabled_all opencl libdrm ; then
6164     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6165         enable opencl_drm_arm
6166 fi
6167
6168 enabled vdpau &&
6169     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6170     disable vdpau
6171
6172 enabled vdpau &&
6173     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6174
6175 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6176
6177 if enabled x86; then
6178     case $target_os in
6179         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6180             ;;
6181         *)
6182             disable cuda cuvid nvdec nvenc
6183             ;;
6184     esac
6185 else
6186     disable cuda cuvid nvdec nvenc
6187 fi
6188
6189 enabled nvenc &&
6190     check_cc -I$source_path <<EOF || disable nvenc
6191 #include "compat/nvenc/nvEncodeAPI.h"
6192 NV_ENCODE_API_FUNCTION_LIST flist;
6193 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6194 int main(void) { return 0; }
6195 EOF
6196
6197 # Funny iconv installations are not unusual, so check it after all flags have been set
6198 if enabled libc_iconv; then
6199     check_func_headers iconv.h iconv
6200 elif enabled iconv; then
6201     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6202 fi
6203
6204 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6205
6206 # add some useful compiler flags if supported
6207 check_cflags -Wdeclaration-after-statement
6208 check_cflags -Wall
6209 check_cflags -Wdisabled-optimization
6210 check_cflags -Wpointer-arith
6211 check_cflags -Wredundant-decls
6212 check_cflags -Wwrite-strings
6213 check_cflags -Wtype-limits
6214 check_cflags -Wundef
6215 check_cflags -Wmissing-prototypes
6216 check_cflags -Wno-pointer-to-int-cast
6217 check_cflags -Wstrict-prototypes
6218 check_cflags -Wempty-body
6219
6220 if enabled extra_warnings; then
6221     check_cflags -Wcast-qual
6222     check_cflags -Wextra
6223     check_cflags -Wpedantic
6224 fi
6225
6226 check_disable_warning(){
6227     warning_flag=-W${1#-Wno-}
6228     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6229 }
6230
6231 test_cflags -Werror=unused-command-line-argument &&
6232     append unknown_warning_flags "-Werror=unused-command-line-argument"
6233 test_cflags -Werror=unknown-warning-option &&
6234     append unknown_warning_flags "-Werror=unknown-warning-option"
6235
6236 check_disable_warning -Wno-parentheses
6237 check_disable_warning -Wno-switch
6238 check_disable_warning -Wno-format-zero-length
6239 check_disable_warning -Wno-pointer-sign
6240 check_disable_warning -Wno-unused-const-variable
6241 check_disable_warning -Wno-bool-operation
6242
6243 check_disable_warning_headers(){
6244     warning_flag=-W${1#-Wno-}
6245     test_cflags $warning_flag && add_cflags_headers $1
6246 }
6247
6248 check_disable_warning_headers -Wno-deprecated-declarations
6249 check_disable_warning_headers -Wno-unused-variable
6250
6251 check_cc <<EOF && enable blocks_extension
6252 void (^block)(void);
6253 EOF
6254
6255 # add some linker flags
6256 check_ldflags -Wl,--warn-common
6257 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6258 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6259 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6260
6261 # add some strip flags
6262 check_stripflags -x
6263
6264 enabled neon_clobber_test &&
6265     check_ldflags -Wl,--wrap,avcodec_open2              \
6266                   -Wl,--wrap,avcodec_decode_audio4      \
6267                   -Wl,--wrap,avcodec_decode_video2      \
6268                   -Wl,--wrap,avcodec_decode_subtitle2   \
6269                   -Wl,--wrap,avcodec_encode_audio2      \
6270                   -Wl,--wrap,avcodec_encode_video2      \
6271                   -Wl,--wrap,avcodec_encode_subtitle    \
6272                   -Wl,--wrap,avcodec_send_packet        \
6273                   -Wl,--wrap,avcodec_receive_packet     \
6274                   -Wl,--wrap,avcodec_send_frame         \
6275                   -Wl,--wrap,avcodec_receive_frame      \
6276                   -Wl,--wrap,swr_convert                \
6277                   -Wl,--wrap,avresample_convert ||
6278     disable neon_clobber_test
6279
6280 enabled xmm_clobber_test &&
6281     check_ldflags -Wl,--wrap,avcodec_open2              \
6282                   -Wl,--wrap,avcodec_decode_audio4      \
6283                   -Wl,--wrap,avcodec_decode_video2      \
6284                   -Wl,--wrap,avcodec_decode_subtitle2   \
6285                   -Wl,--wrap,avcodec_encode_audio2      \
6286                   -Wl,--wrap,avcodec_encode_video2      \
6287                   -Wl,--wrap,avcodec_encode_subtitle    \
6288                   -Wl,--wrap,avcodec_send_packet        \
6289                   -Wl,--wrap,avcodec_receive_packet     \
6290                   -Wl,--wrap,avcodec_send_frame         \
6291                   -Wl,--wrap,avcodec_receive_frame      \
6292                   -Wl,--wrap,swr_convert                \
6293                   -Wl,--wrap,avresample_convert         \
6294                   -Wl,--wrap,sws_scale ||
6295     disable xmm_clobber_test
6296
6297 check_ld "cc" <<EOF && enable proper_dce
6298 extern const int array[512];
6299 static inline int func(void) { return array[0]; }
6300 int main(void) { return 0; }
6301 EOF
6302
6303 if enabled proper_dce; then
6304     echo "X { local: *; };" > $TMPV
6305     if test_ldflags -Wl,${version_script},$TMPV; then
6306         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6307         quotes='""'
6308         check_cc <<EOF && enable symver_asm_label
6309 void ff_foo(void) __asm__ ("av_foo@VERSION");
6310 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6311 EOF
6312         check_cc <<EOF && enable symver_gnu_asm
6313 __asm__(".symver ff_foo,av_foo@VERSION");
6314 void ff_foo(void) {}
6315 EOF
6316     fi
6317 fi
6318
6319 if [ -z "$optflags" ]; then
6320     if enabled small; then
6321         optflags=$cflags_size
6322     elif enabled optimizations; then
6323         optflags=$cflags_speed
6324     else
6325         optflags=$cflags_noopt
6326     fi
6327 fi
6328
6329 if [ -z "$nvccflags" ]; then
6330     nvccflags=$nvccflags_default
6331 fi
6332
6333 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6334     nvccflags="$nvccflags -m64"
6335 else
6336     nvccflags="$nvccflags -m32"
6337 fi
6338
6339 check_optflags(){
6340     check_cflags "$@"
6341     enabled lto && check_ldflags "$@"
6342 }
6343
6344 check_optflags $optflags
6345 check_optflags -fno-math-errno
6346 check_optflags -fno-signed-zeros
6347
6348 if enabled lto; then
6349     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6350     check_cflags  -flto
6351     check_ldflags -flto $cpuflags
6352     disable inline_asm_direct_symbol_refs
6353 fi
6354
6355 enabled ftrapv && check_cflags -ftrapv
6356
6357 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6358 int x;
6359 EOF
6360
6361
6362 if enabled icc; then
6363     # Just warnings, no remarks
6364     check_cflags -w1
6365     # -wd: Disable following warnings
6366     # 144, 167, 556: -Wno-pointer-sign
6367     # 188: enumerated type mixed with another type
6368     # 1292: attribute "foo" ignored
6369     # 1419: external declaration in primary source file
6370     # 10006: ignoring unknown option -fno-signed-zeros
6371     # 10148: ignoring unknown option -Wno-parentheses
6372     # 10156: ignoring option '-W'; no argument required
6373     # 13200: No EMMS instruction before call to function
6374     # 13203: No EMMS instruction before return from function
6375     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6376     # 11030: Warning unknown option --as-needed
6377     # 10156: ignoring option '-export'; no argument required
6378     check_ldflags -wd10156,11030
6379     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6380     enable ebp_available
6381     # The test above does not test linking
6382     enabled lto && disable symver_asm_label
6383     if enabled x86_32; then
6384         icc_version=$($cc -dumpversion)
6385         test ${icc_version%%.*} -ge 11 &&
6386             check_cflags -falign-stack=maintain-16-byte ||
6387             disable aligned_stack
6388     fi
6389 elif enabled gcc; then
6390     check_optflags -fno-tree-vectorize
6391     check_cflags -Werror=format-security
6392     check_cflags -Werror=implicit-function-declaration
6393     check_cflags -Werror=missing-prototypes
6394     check_cflags -Werror=return-type
6395     check_cflags -Werror=vla
6396     check_cflags -Wformat
6397     check_cflags -fdiagnostics-color=auto
6398     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6399 elif enabled llvm_gcc; then
6400     check_cflags -mllvm -stack-alignment=16
6401 elif enabled clang; then
6402     check_cflags -mllvm -stack-alignment=16
6403     check_cflags -mstack-alignment=16
6404     check_cflags -Qunused-arguments
6405     check_cflags -Werror=implicit-function-declaration
6406     check_cflags -Werror=missing-prototypes
6407     check_cflags -Werror=return-type
6408 elif enabled cparser; then
6409     add_cflags -Wno-missing-variable-declarations
6410     add_cflags -Wno-empty-statement
6411 elif enabled armcc; then
6412     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6413     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6414     # 2523: use of inline assembly is deprecated
6415     add_cflags -W${armcc_opt},--diag_suppress=2523
6416     add_cflags -W${armcc_opt},--diag_suppress=1207
6417     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6418     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6419     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6420     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6421 elif enabled pathscale; then
6422     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6423     disable inline_asm
6424 elif enabled_any msvc icl; then
6425     enabled x86_32 && disable aligned_stack
6426     enabled_all x86_32 debug && add_cflags -Oy-
6427     enabled debug && add_ldflags -debug
6428     enable pragma_deprecated
6429     if enabled icl; then
6430         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6431         # (correctly) on icl 13.x.
6432         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6433             add_cflags -Qansi-alias
6434         # Some inline asm is not compilable in debug
6435         if enabled debug; then
6436             disable ebp_available
6437             disable ebx_available
6438         fi
6439     fi
6440     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6441     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6442     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6443     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6444     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6445     # MSVC 2013 and newer can handle it fine.
6446     # If this declspec fails, force including stdlib.h before the restrict redefinition
6447     # happens in config.h.
6448     if [ $_restrict != restrict ]; then
6449         check_cc <<EOF || add_cflags -FIstdlib.h
6450 __declspec($_restrict) void* foo(int);
6451 EOF
6452     fi
6453     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6454     # Issue has been fixed in MSVC v19.00.24218.
6455     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6456         check_cflags -d2SSAOptimizer-
6457     # enable utf-8 source processing on VS2015 U2 and newer
6458     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6459         add_cflags -utf-8
6460 fi
6461
6462 for pfx in "" host_; do
6463     varname=${pfx%_}cc_type
6464     eval "type=\$$varname"
6465     if [ "$type" = "msvc" ]; then
6466         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6467 static inline int foo(int a) { return a; }
6468 EOF
6469     fi
6470 done
6471
6472 case $as_type in
6473     clang)
6474         add_asflags -Qunused-arguments
6475     ;;
6476 esac
6477
6478 case $ld_type in
6479     clang)
6480         check_ldflags -Qunused-arguments
6481     ;;
6482 esac
6483
6484 enable frame_thread_encoder
6485
6486 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6487
6488 check_deps $CONFIG_LIST       \
6489            $CONFIG_EXTRA      \
6490            $HAVE_LIST         \
6491            $ALL_COMPONENTS    \
6492
6493 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"
6494
6495
6496 if test $target_os = "haiku"; then
6497     disable memalign
6498     disable posix_memalign
6499 fi
6500
6501 flatten_extralibs(){
6502     unset nested_entries
6503     list_name=$1
6504     eval list=\$${1}
6505     for entry in $list; do
6506         entry_copy=$entry
6507         resolve entry_copy
6508         append nested_entries $(filter '*_extralibs' $entry_copy)
6509         flat_entries=$(filter_out '*_extralibs' $entry_copy)
6510         eval $entry="\$flat_entries"
6511     done
6512     append $list_name "$nested_entries"
6513
6514     resolve nested_entries
6515     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6516         flatten_extralibs $list_name
6517     fi
6518 }
6519
6520 flatten_extralibs_wrapper(){
6521     list_name=$1
6522     flatten_extralibs $list_name
6523     unique $list_name
6524     resolve $list_name
6525     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6526     eval printf \''%s'\' \""\$$list_name"\"
6527 }
6528
6529 for linkunit in $LIBRARY_LIST; do
6530     unset current_extralibs
6531     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6532     for comp in ${components}; do
6533         enabled $comp || continue
6534         comp_extralibs="${comp}_extralibs"
6535         append current_extralibs $comp_extralibs
6536     done
6537     eval prepend ${linkunit}_extralibs $current_extralibs
6538 done
6539
6540 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6541     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6542 done
6543
6544 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6545
6546 for thread in $THREADS_LIST; do
6547     if enabled $thread; then
6548         test -n "$thread_type" &&
6549             die "ERROR: Only one thread type must be selected." ||
6550             thread_type="$thread"
6551     fi
6552 done
6553
6554 if disabled stdatomic; then
6555     if enabled atomics_gcc; then
6556         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6557     elif enabled atomics_win32; then
6558         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6559     elif enabled atomics_suncc; then
6560         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6561     elif enabled pthreads; then
6562         add_compat atomics/pthread/stdatomic.o
6563         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6564     else
6565         enabled threads && die "Threading is enabled, but no atomics are available"
6566         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6567     fi
6568 fi
6569
6570 # Check if requested libraries were found.
6571 for lib in $AUTODETECT_LIBS; do
6572     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6573 done
6574
6575 enabled zlib && add_cppflags -DZLIB_CONST
6576
6577 # conditional library dependencies, in linking order
6578 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6579 enabled afir_filter         && prepend avfilter_deps "avcodec"
6580 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6581 enabled aresample_filter    && prepend avfilter_deps "swresample"
6582 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6583 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6584 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6585 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6586 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6587 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6588 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6589 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6590 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6591 enabled pan_filter          && prepend avfilter_deps "swresample"
6592 enabled pp_filter           && prepend avfilter_deps "postproc"
6593 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6594 enabled resample_filter && prepend avfilter_deps "avresample"
6595 enabled sab_filter          && prepend avfilter_deps "swscale"
6596 enabled scale_filter    && prepend avfilter_deps "swscale"
6597 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6598 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6599 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6600 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6601 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6602 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6603 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6604 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6605 enabled spp_filter          && prepend avfilter_deps "avcodec"
6606 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6607 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6608 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6609
6610 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6611
6612 #FIXME
6613 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6614
6615 enabled opus_decoder    && prepend avcodec_deps "swresample"
6616
6617 expand_deps(){
6618     lib_deps=${1}_deps
6619     eval "deps=\$$lib_deps"
6620     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6621     unique $lib_deps
6622 }
6623
6624 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6625 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6626
6627 map 'expand_deps $v' $LIBRARY_LIST
6628
6629 license="LGPL version 2.1 or later"
6630 if enabled nonfree; then
6631     license="nonfree and unredistributable"
6632 elif enabled gplv3; then
6633     license="GPL version 3 or later"
6634 elif enabled lgplv3; then
6635     license="LGPL version 3 or later"
6636 elif enabled gpl; then
6637     license="GPL version 2 or later"
6638 fi
6639
6640 if test "$quiet" != "yes"; then
6641
6642 echo "install prefix            $prefix"
6643 echo "source path               $source_path"
6644 echo "C compiler                $cc"
6645 echo "C library                 $libc_type"
6646 if test "$host_cc" != "$cc"; then
6647     echo "host C compiler           $host_cc"
6648     echo "host C library            $host_libc_type"
6649 fi
6650 echo "ARCH                      $arch ($cpu)"
6651 if test "$build_suffix" != ""; then
6652     echo "build suffix              $build_suffix"
6653 fi
6654 if test "$progs_suffix" != ""; then
6655     echo "progs suffix              $progs_suffix"
6656 fi
6657 if test "$extra_version" != ""; then
6658     echo "version string suffix     $extra_version"
6659 fi
6660 echo "big-endian                ${bigendian-no}"
6661 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6662 if enabled x86; then
6663     echo "standalone assembly       ${x86asm-no}"
6664     echo "x86 assembler             ${x86asmexe}"
6665     echo "MMX enabled               ${mmx-no}"
6666     echo "MMXEXT enabled            ${mmxext-no}"
6667     echo "3DNow! enabled            ${amd3dnow-no}"
6668     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6669     echo "SSE enabled               ${sse-no}"
6670     echo "SSSE3 enabled             ${ssse3-no}"
6671     echo "AESNI enabled             ${aesni-no}"
6672     echo "AVX enabled               ${avx-no}"
6673     echo "AVX2 enabled              ${avx2-no}"
6674     echo "XOP enabled               ${xop-no}"
6675     echo "FMA3 enabled              ${fma3-no}"
6676     echo "FMA4 enabled              ${fma4-no}"
6677     echo "i686 features enabled     ${i686-no}"
6678     echo "CMOV is fast              ${fast_cmov-no}"
6679     echo "EBX available             ${ebx_available-no}"
6680     echo "EBP available             ${ebp_available-no}"
6681 fi
6682 if enabled aarch64; then
6683     echo "NEON enabled              ${neon-no}"
6684     echo "VFP enabled               ${vfp-no}"
6685 fi
6686 if enabled arm; then
6687     echo "ARMv5TE enabled           ${armv5te-no}"
6688     echo "ARMv6 enabled             ${armv6-no}"
6689     echo "ARMv6T2 enabled           ${armv6t2-no}"
6690     echo "VFP enabled               ${vfp-no}"
6691     echo "NEON enabled              ${neon-no}"
6692     echo "THUMB enabled             ${thumb-no}"
6693 fi
6694 if enabled mips; then
6695     echo "MIPS FPU enabled          ${mipsfpu-no}"
6696     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6697     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6698     echo "MIPS MSA enabled          ${msa-no}"
6699     echo "LOONGSON MMI enabled      ${mmi-no}"
6700 fi
6701 if enabled ppc; then
6702     echo "AltiVec enabled           ${altivec-no}"
6703     echo "VSX enabled               ${vsx-no}"
6704     echo "POWER8 enabled            ${power8-no}"
6705     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6706     echo "dcbzl available           ${dcbzl-no}"
6707 fi
6708 echo "debug symbols             ${debug-no}"
6709 echo "strip symbols             ${stripping-no}"
6710 echo "optimize for size         ${small-no}"
6711 echo "optimizations             ${optimizations-no}"
6712 echo "static                    ${static-no}"
6713 echo "shared                    ${shared-no}"
6714 echo "postprocessing support    ${postproc-no}"
6715 echo "network support           ${network-no}"
6716 echo "threading support         ${thread_type-no}"
6717 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6718 echo "texi2html enabled         ${texi2html-no}"
6719 echo "perl enabled              ${perl-no}"
6720 echo "pod2man enabled           ${pod2man-no}"
6721 echo "makeinfo enabled          ${makeinfo-no}"
6722 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6723 test -n "$random_seed" &&
6724     echo "random seed               ${random_seed}"
6725 echo
6726
6727 echo "External libraries:"
6728 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
6729 echo
6730
6731 echo "External libraries providing hardware acceleration:"
6732 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
6733 echo
6734
6735 echo "Libraries:"
6736 print_enabled '' $LIBRARY_LIST | print_in_columns
6737 echo
6738
6739 echo "Programs:"
6740 print_enabled '' $PROGRAM_LIST | print_in_columns
6741 echo
6742
6743 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6744     echo "Enabled ${type}s:"
6745     eval list=\$$(toupper $type)_LIST
6746     print_enabled '_*' $list | print_in_columns
6747     echo
6748 done
6749
6750 if test -n "$ignore_tests"; then
6751     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6752     echo "Ignored FATE tests:"
6753     echo $ignore_tests | print_in_columns
6754     echo
6755 fi
6756
6757 echo "License: $license"
6758
6759 fi # test "$quiet" != "yes"
6760
6761 if test -n "$WARNINGS"; then
6762     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6763     enabled fatal_warnings && exit 1
6764 fi
6765
6766 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6767
6768 esc(){
6769     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
6770 }
6771
6772 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
6773
6774 enabled stripping || strip="echo skipping strip"
6775 enabled stripping || striptype=""
6776
6777 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6778
6779 cat > ffbuild/config.mak <<EOF
6780 # Automatically generated by configure - do not modify!
6781 ifndef FFMPEG_CONFIG_MAK
6782 FFMPEG_CONFIG_MAK=1
6783 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6784 prefix=$prefix
6785 LIBDIR=\$(DESTDIR)$libdir
6786 SHLIBDIR=\$(DESTDIR)$shlibdir
6787 INCDIR=\$(DESTDIR)$incdir
6788 BINDIR=\$(DESTDIR)$bindir
6789 DATADIR=\$(DESTDIR)$datadir
6790 DOCDIR=\$(DESTDIR)$docdir
6791 MANDIR=\$(DESTDIR)$mandir
6792 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6793 INSTALL_NAME_DIR=$install_name_dir
6794 SRC_PATH=$source_path
6795 SRC_LINK=$source_link
6796 ifndef MAIN_MAKEFILE
6797 SRC_PATH:=\$(SRC_PATH:.%=..%)
6798 endif
6799 CC_IDENT=$cc_ident
6800 ARCH=$arch
6801 INTRINSICS=$intrinsics
6802 EXTERN_PREFIX=$extern_prefix
6803 CC=$cc
6804 CXX=$cxx
6805 AS=$as
6806 OBJCC=$objcc
6807 LD=$ld
6808 DEPCC=$dep_cc
6809 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6810 DEPAS=$as
6811 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6812 X86ASM=$x86asmexe
6813 DEPX86ASM=$x86asmexe
6814 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6815 AR=$ar
6816 ARFLAGS=$arflags
6817 AR_O=$ar_o
6818 AR_CMD=$ar
6819 NM_CMD=$nm
6820 RANLIB=$ranlib
6821 STRIP=$strip
6822 STRIPTYPE=$striptype
6823 NVCC=$nvcc
6824 CP=cp -p
6825 LN_S=$ln_s
6826 CPPFLAGS=$CPPFLAGS
6827 CFLAGS=$CFLAGS
6828 CXXFLAGS=$CXXFLAGS
6829 OBJCFLAGS=$OBJCFLAGS
6830 ASFLAGS=$ASFLAGS
6831 NVCCFLAGS=$nvccflags
6832 AS_C=$AS_C
6833 AS_O=$AS_O
6834 OBJCC_C=$OBJCC_C
6835 OBJCC_E=$OBJCC_E
6836 OBJCC_O=$OBJCC_O
6837 CC_C=$CC_C
6838 CC_E=$CC_E
6839 CC_O=$CC_O
6840 CXX_C=$CXX_C
6841 CXX_O=$CXX_O
6842 NVCC_C=$NVCC_C
6843 NVCC_O=$NVCC_O
6844 LD_O=$LD_O
6845 X86ASM_O=$X86ASM_O
6846 LD_LIB=$LD_LIB
6847 LD_PATH=$LD_PATH
6848 WINDRES=$windres
6849 DEPWINDRES=$dep_cc
6850 DOXYGEN=$doxygen
6851 LDFLAGS=$LDFLAGS
6852 LDEXEFLAGS=$LDEXEFLAGS
6853 LDSOFLAGS=$LDSOFLAGS
6854 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6855 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6856 X86ASMFLAGS=$X86ASMFLAGS
6857 BUILDSUF=$build_suffix
6858 PROGSSUF=$progs_suffix
6859 FULLNAME=$FULLNAME
6860 LIBPREF=$LIBPREF
6861 LIBSUF=$LIBSUF
6862 LIBNAME=$LIBNAME
6863 SLIBPREF=$SLIBPREF
6864 SLIBSUF=$SLIBSUF
6865 EXESUF=$EXESUF
6866 EXTRA_VERSION=$extra_version
6867 CCDEP=$CCDEP
6868 CXXDEP=$CXXDEP
6869 CCDEP_FLAGS=$CCDEP_FLAGS
6870 ASDEP=$ASDEP
6871 ASDEP_FLAGS=$ASDEP_FLAGS
6872 X86ASMDEP=$X86ASMDEP
6873 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
6874 CC_DEPFLAGS=$CC_DEPFLAGS
6875 AS_DEPFLAGS=$AS_DEPFLAGS
6876 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
6877 HOSTCC=$host_cc
6878 HOSTLD=$host_ld
6879 HOSTCFLAGS=$host_cflags
6880 HOSTCPPFLAGS=$host_cppflags
6881 HOSTEXESUF=$HOSTEXESUF
6882 HOSTLDFLAGS=$host_ldflags
6883 HOSTEXTRALIBS=$host_extralibs
6884 DEPHOSTCC=$host_cc
6885 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6886 HOSTCCDEP=$HOSTCCDEP
6887 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6888 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6889 HOSTCC_C=$HOSTCC_C
6890 HOSTCC_O=$HOSTCC_O
6891 HOSTLD_O=$HOSTLD_O
6892 TARGET_EXEC=$target_exec $target_exec_args
6893 TARGET_PATH=$target_path
6894 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6895 CFLAGS-ffplay=${sdl2_cflags}
6896 CFLAGS_HEADERS=$CFLAGS_HEADERS
6897 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6898 EXTRALIBS=$extralibs
6899 COMPAT_OBJS=$compat_objs
6900 INSTALL=$install
6901 SLIBNAME=${SLIBNAME}
6902 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6903 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6904 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6905 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6906 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6907 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6908 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6909 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6910 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6911 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6912 NOREDZONE_FLAGS=$noredzone_flags
6913 LIBFUZZER_PATH=$libfuzzer_path
6914 IGNORE_TESTS=$ignore_tests
6915 EOF
6916
6917 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
6918
6919 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6920     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
6921 done
6922
6923 cat > $TMPH <<EOF
6924 /* Automatically generated by configure - do not modify! */
6925 #ifndef FFMPEG_CONFIG_H
6926 #define FFMPEG_CONFIG_H
6927 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6928 #define FFMPEG_LICENSE "$(c_escape $license)"
6929 #define CONFIG_THIS_YEAR 2017
6930 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6931 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6932 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6933 #define av_restrict $_restrict
6934 #define EXTERN_PREFIX "${extern_prefix}"
6935 #define EXTERN_ASM ${extern_prefix}
6936 #define BUILDSUF "$build_suffix"
6937 #define SLIBSUF "$SLIBSUF"
6938 #define HAVE_MMX2 HAVE_MMXEXT
6939 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6940 EOF
6941
6942 test -n "$assert_level" &&
6943     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6944
6945 test -n "$malloc_prefix" &&
6946     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6947
6948 if enabled x86asm; then
6949     append config_files $TMPASM
6950     cat > $TMPASM <<EOF
6951 ; Automatically generated by configure - do not modify!
6952 EOF
6953 fi
6954
6955 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6956
6957
6958 mkdir -p doc
6959 mkdir -p tests
6960 mkdir -p tests/api
6961 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6962
6963 print_config ARCH_   "$config_files" $ARCH_LIST
6964 print_config HAVE_   "$config_files" $HAVE_LIST
6965 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6966                                      $CONFIG_EXTRA      \
6967                                      $ALL_COMPONENTS    \
6968
6969 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6970 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
6971
6972 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6973 cp_if_changed $TMPH config.h
6974 touch ffbuild/.config
6975
6976 enabled x86asm && cp_if_changed $TMPASM config.asm
6977
6978 cat > $TMPH <<EOF
6979 /* Generated by ffmpeg configure */
6980 #ifndef AVUTIL_AVCONFIG_H
6981 #define AVUTIL_AVCONFIG_H
6982 EOF
6983
6984 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6985
6986 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6987
6988 cp_if_changed $TMPH libavutil/avconfig.h
6989
6990 # generate the lists of enabled components
6991 print_enabled_components(){
6992     file=$1
6993     struct_name=$2
6994     name=$3
6995     shift 3
6996     echo "static const $struct_name * const $name[] = {" > $TMPH
6997     for c in $*; do
6998         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6999     done
7000     echo "    NULL };" >> $TMPH
7001     cp_if_changed $TMPH $file
7002 }
7003
7004 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7005 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7006
7007 # Settings for pkg-config files
7008
7009 cat > $TMPH <<EOF
7010 # Automatically generated by configure - do not modify!
7011 shared=$shared
7012 build_suffix=$build_suffix
7013 prefix=$prefix
7014 libdir=$libdir
7015 incdir=$incdir
7016 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7017 source_path=${source_path}
7018 LIBPREF=${LIBPREF}
7019 LIBSUF=${LIBSUF}
7020 extralibs_avutil="$avutil_extralibs"
7021 extralibs_avcodec="$avcodec_extralibs"
7022 extralibs_avformat="$avformat_extralibs"
7023 extralibs_avdevice="$avdevice_extralibs"
7024 extralibs_avfilter="$avfilter_extralibs"
7025 extralibs_avresample="$avresample_extralibs"
7026 extralibs_postproc="$postproc_extralibs"
7027 extralibs_swscale="$swscale_extralibs"
7028 extralibs_swresample="$swresample_extralibs"
7029 EOF
7030
7031 for lib in $LIBRARY_LIST; do
7032     lib_deps="$(eval echo \$${lib}_deps)"
7033     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7034 done
7035
7036 cp_if_changed $TMPH ffbuild/config.sh