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_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2750 vp8_vaapi_hwaccel_select="vp8_decoder"
2751 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2752 vp9_d3d11va_hwaccel_select="vp9_decoder"
2753 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2754 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2755 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2756 vp9_dxva2_hwaccel_select="vp9_decoder"
2757 vp9_nvdec_hwaccel_deps="nvdec"
2758 vp9_nvdec_hwaccel_select="vp9_decoder"
2759 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2760 vp9_vaapi_hwaccel_select="vp9_decoder"
2761 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2762 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2763 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2764 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2765 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2766 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2767
2768 # hardware-accelerated codecs
2769 omx_deps="libdl pthreads"
2770 omx_rpi_select="omx"
2771 qsv_deps="libmfx"
2772 qsvdec_select="qsv"
2773 qsvenc_select="qsv"
2774 qsvvpp_select="qsv"
2775 vaapi_encode_deps="vaapi"
2776 v4l2_m2m_deps_any="linux_videodev2_h"
2777
2778 hwupload_cuda_filter_deps="cuda"
2779 scale_npp_filter_deps="cuda libnpp"
2780 scale_cuda_filter_deps="cuda_sdk"
2781 thumbnail_cuda_filter_deps="cuda_sdk"
2782
2783 nvenc_deps="cuda"
2784 nvenc_deps_any="libdl LoadLibrary"
2785 nvenc_encoder_deps="nvenc"
2786
2787 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2788 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2789 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2790 h264_cuvid_decoder_deps="cuvid"
2791 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2792 h264_mediacodec_decoder_deps="mediacodec"
2793 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2794 h264_mmal_decoder_deps="mmal"
2795 h264_nvenc_encoder_deps="nvenc"
2796 h264_omx_encoder_deps="omx"
2797 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2798 h264_qsv_encoder_select="qsvenc"
2799 h264_rkmpp_decoder_deps="rkmpp"
2800 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2801 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2802 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2803 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2804 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2805 hevc_cuvid_decoder_deps="cuvid"
2806 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2807 hevc_mediacodec_decoder_deps="mediacodec"
2808 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2809 hevc_nvenc_encoder_deps="nvenc"
2810 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2811 hevc_qsv_encoder_select="hevcparse qsvenc"
2812 hevc_rkmpp_decoder_deps="rkmpp"
2813 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2814 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2815 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2816 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2817 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2818 mjpeg_cuvid_decoder_deps="cuvid"
2819 mjpeg_qsv_encoder_deps="libmfx"
2820 mjpeg_qsv_encoder_select="qsvenc"
2821 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2822 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2823 mpeg1_cuvid_decoder_deps="cuvid"
2824 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2825 mpeg2_crystalhd_decoder_select="crystalhd"
2826 mpeg2_cuvid_decoder_deps="cuvid"
2827 mpeg2_mmal_decoder_deps="mmal"
2828 mpeg2_mediacodec_decoder_deps="mediacodec"
2829 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2830 mpeg2_qsv_encoder_select="qsvenc"
2831 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2832 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2833 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2834 mpeg4_crystalhd_decoder_select="crystalhd"
2835 mpeg4_cuvid_decoder_deps="cuvid"
2836 mpeg4_mediacodec_decoder_deps="mediacodec"
2837 mpeg4_mmal_decoder_deps="mmal"
2838 mpeg4_omx_encoder_deps="omx"
2839 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2840 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2841 msmpeg4_crystalhd_decoder_select="crystalhd"
2842 nvenc_h264_encoder_select="h264_nvenc_encoder"
2843 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2844 vc1_crystalhd_decoder_select="crystalhd"
2845 vc1_cuvid_decoder_deps="cuvid"
2846 vc1_mmal_decoder_deps="mmal"
2847 vc1_qsv_decoder_select="qsvdec vc1_parser"
2848 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2849 vp8_cuvid_decoder_deps="cuvid"
2850 vp8_mediacodec_decoder_deps="mediacodec"
2851 vp8_qsv_decoder_select="qsvdec vp8_parser"
2852 vp8_rkmpp_decoder_deps="rkmpp"
2853 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2854 vp8_vaapi_encoder_select="vaapi_encode"
2855 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2856 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2857 vp9_cuvid_decoder_deps="cuvid"
2858 vp9_mediacodec_decoder_deps="mediacodec"
2859 vp9_rkmpp_decoder_deps="rkmpp"
2860 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2861 vp9_vaapi_encoder_select="vaapi_encode"
2862 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2863 wmv3_crystalhd_decoder_select="crystalhd"
2864
2865 # parsers
2866 aac_parser_select="adts_header"
2867 h264_parser_select="golomb h264dsp h264parse"
2868 hevc_parser_select="hevcparse"
2869 mpegaudio_parser_select="mpegaudioheader"
2870 mpegvideo_parser_select="mpegvideo"
2871 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2872 vc1_parser_select="vc1dsp"
2873
2874 # bitstream_filters
2875 aac_adtstoasc_bsf_select="adts_header"
2876 h264_metadata_bsf_select="cbs_h264"
2877 h264_redundant_pps_bsf_select="cbs_h264"
2878 hevc_metadata_bsf_select="cbs_h265"
2879 mjpeg2jpeg_bsf_select="jpegtables"
2880 mpeg2_metadata_bsf_select="cbs_mpeg2"
2881 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2882
2883 # external libraries
2884 aac_at_decoder_deps="audiotoolbox"
2885 ac3_at_decoder_deps="audiotoolbox"
2886 ac3_at_decoder_select="ac3_parser"
2887 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2888 alac_at_decoder_deps="audiotoolbox"
2889 amr_nb_at_decoder_deps="audiotoolbox"
2890 avisynth_deps_any="libdl LoadLibrary"
2891 avisynth_demuxer_deps="avisynth"
2892 avisynth_demuxer_select="riffdec"
2893 eac3_at_decoder_deps="audiotoolbox"
2894 eac3_at_decoder_select="ac3_parser"
2895 gsm_ms_at_decoder_deps="audiotoolbox"
2896 ilbc_at_decoder_deps="audiotoolbox"
2897 mp1_at_decoder_deps="audiotoolbox"
2898 mp2_at_decoder_deps="audiotoolbox"
2899 mp3_at_decoder_deps="audiotoolbox"
2900 mp1_at_decoder_select="mpegaudioheader"
2901 mp2_at_decoder_select="mpegaudioheader"
2902 mp3_at_decoder_select="mpegaudioheader"
2903 pcm_alaw_at_decoder_deps="audiotoolbox"
2904 pcm_mulaw_at_decoder_deps="audiotoolbox"
2905 qdmc_at_decoder_deps="audiotoolbox"
2906 qdm2_at_decoder_deps="audiotoolbox"
2907 aac_at_encoder_deps="audiotoolbox"
2908 aac_at_encoder_select="audio_frame_queue"
2909 alac_at_encoder_deps="audiotoolbox"
2910 alac_at_encoder_select="audio_frame_queue"
2911 ilbc_at_encoder_deps="audiotoolbox"
2912 ilbc_at_encoder_select="audio_frame_queue"
2913 pcm_alaw_at_encoder_deps="audiotoolbox"
2914 pcm_alaw_at_encoder_select="audio_frame_queue"
2915 pcm_mulaw_at_encoder_deps="audiotoolbox"
2916 pcm_mulaw_at_encoder_select="audio_frame_queue"
2917 chromaprint_muxer_deps="chromaprint"
2918 h264_videotoolbox_encoder_deps="pthreads"
2919 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2920 hevc_videotoolbox_encoder_deps="pthreads"
2921 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
2922 libcelt_decoder_deps="libcelt"
2923 libfdk_aac_decoder_deps="libfdk_aac"
2924 libfdk_aac_encoder_deps="libfdk_aac"
2925 libfdk_aac_encoder_select="audio_frame_queue"
2926 libgme_demuxer_deps="libgme"
2927 libgsm_decoder_deps="libgsm"
2928 libgsm_encoder_deps="libgsm"
2929 libgsm_ms_decoder_deps="libgsm"
2930 libgsm_ms_encoder_deps="libgsm"
2931 libilbc_decoder_deps="libilbc"
2932 libilbc_encoder_deps="libilbc"
2933 libkvazaar_encoder_deps="libkvazaar"
2934 libmodplug_demuxer_deps="libmodplug"
2935 libmp3lame_encoder_deps="libmp3lame"
2936 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2937 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2938 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2939 libopencore_amrnb_encoder_select="audio_frame_queue"
2940 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2941 libopenh264_decoder_deps="libopenh264"
2942 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2943 libopenh264_encoder_deps="libopenh264"
2944 libopenjpeg_decoder_deps="libopenjpeg"
2945 libopenjpeg_encoder_deps="libopenjpeg"
2946 libopenmpt_demuxer_deps="libopenmpt"
2947 libopus_decoder_deps="libopus"
2948 libopus_encoder_deps="libopus"
2949 libopus_encoder_select="audio_frame_queue"
2950 librsvg_decoder_deps="librsvg"
2951 libshine_encoder_deps="libshine"
2952 libshine_encoder_select="audio_frame_queue"
2953 libspeex_decoder_deps="libspeex"
2954 libspeex_encoder_deps="libspeex"
2955 libspeex_encoder_select="audio_frame_queue"
2956 libtheora_encoder_deps="libtheora"
2957 libtwolame_encoder_deps="libtwolame"
2958 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2959 libvorbis_decoder_deps="libvorbis"
2960 libvorbis_encoder_deps="libvorbis libvorbisenc"
2961 libvorbis_encoder_select="audio_frame_queue"
2962 libvpx_vp8_decoder_deps="libvpx"
2963 libvpx_vp8_encoder_deps="libvpx"
2964 libvpx_vp9_decoder_deps="libvpx"
2965 libvpx_vp9_encoder_deps="libvpx"
2966 libwavpack_encoder_deps="libwavpack"
2967 libwavpack_encoder_select="audio_frame_queue"
2968 libwebp_encoder_deps="libwebp"
2969 libwebp_anim_encoder_deps="libwebp"
2970 libx262_encoder_deps="libx262"
2971 libx264_encoder_deps="libx264"
2972 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2973 libx264rgb_encoder_select="libx264_encoder"
2974 libx265_encoder_deps="libx265"
2975 libxavs_encoder_deps="libxavs"
2976 libxvid_encoder_deps="libxvid"
2977 libzvbi_teletext_decoder_deps="libzvbi"
2978 videotoolbox_suggest="coreservices"
2979 videotoolbox_deps="corefoundation coremedia corevideo"
2980 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2981
2982 # demuxers / muxers
2983 ac3_demuxer_select="ac3_parser"
2984 aiff_muxer_select="iso_media"
2985 asf_demuxer_select="riffdec"
2986 asf_o_demuxer_select="riffdec"
2987 asf_muxer_select="riffenc"
2988 asf_stream_muxer_select="asf_muxer"
2989 avi_demuxer_select="iso_media riffdec exif"
2990 avi_muxer_select="riffenc"
2991 caf_demuxer_select="iso_media riffdec"
2992 caf_muxer_select="iso_media"
2993 dash_muxer_select="mp4_muxer"
2994 dash_demuxer_deps="libxml2"
2995 dirac_demuxer_select="dirac_parser"
2996 dts_demuxer_select="dca_parser"
2997 dtshd_demuxer_select="dca_parser"
2998 dv_demuxer_select="dvprofile"
2999 dv_muxer_select="dvprofile"
3000 dxa_demuxer_select="riffdec"
3001 eac3_demuxer_select="ac3_parser"
3002 f4v_muxer_select="mov_muxer"
3003 fifo_muxer_deps="threads"
3004 flac_demuxer_select="flac_parser"
3005 hds_muxer_select="flv_muxer"
3006 hls_muxer_select="mpegts_muxer"
3007 hls_muxer_suggest="gcrypt openssl"
3008 image2_alias_pix_demuxer_select="image2_demuxer"
3009 image2_brender_pix_demuxer_select="image2_demuxer"
3010 ipod_muxer_select="mov_muxer"
3011 ismv_muxer_select="mov_muxer"
3012 matroska_audio_muxer_select="matroska_muxer"
3013 matroska_demuxer_select="iso_media riffdec"
3014 matroska_demuxer_suggest="bzlib lzo zlib"
3015 matroska_muxer_select="iso_media riffenc"
3016 mmf_muxer_select="riffenc"
3017 mov_demuxer_select="iso_media riffdec"
3018 mov_demuxer_suggest="zlib"
3019 mov_muxer_select="iso_media riffenc rtpenc_chain"
3020 mp3_demuxer_select="mpegaudio_parser"
3021 mp3_muxer_select="mpegaudioheader"
3022 mp4_muxer_select="mov_muxer"
3023 mpegts_demuxer_select="iso_media"
3024 mpegts_muxer_select="adts_muxer latm_muxer"
3025 mpegtsraw_demuxer_select="mpegts_demuxer"
3026 mxf_d10_muxer_select="mxf_muxer"
3027 mxf_opatom_muxer_select="mxf_muxer"
3028 nut_muxer_select="riffenc"
3029 nuv_demuxer_select="riffdec"
3030 oga_muxer_select="ogg_muxer"
3031 ogg_demuxer_select="dirac_parse"
3032 ogv_muxer_select="ogg_muxer"
3033 opus_muxer_select="ogg_muxer"
3034 psp_muxer_select="mov_muxer"
3035 rtp_demuxer_select="sdp_demuxer"
3036 rtp_muxer_select="golomb"
3037 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3038 rtsp_demuxer_select="http_protocol rtpdec"
3039 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3040 sap_demuxer_select="sdp_demuxer"
3041 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3042 sdp_demuxer_select="rtpdec"
3043 smoothstreaming_muxer_select="ismv_muxer"
3044 spdif_demuxer_select="adts_header"
3045 spdif_muxer_select="adts_header"
3046 spx_muxer_select="ogg_muxer"
3047 swf_demuxer_suggest="zlib"
3048 tak_demuxer_select="tak_parser"
3049 tg2_muxer_select="mov_muxer"
3050 tgp_muxer_select="mov_muxer"
3051 vobsub_demuxer_select="mpegps_demuxer"
3052 w64_demuxer_select="wav_demuxer"
3053 w64_muxer_select="wav_muxer"
3054 wav_demuxer_select="riffdec"
3055 wav_muxer_select="riffenc"
3056 webm_muxer_select="iso_media riffenc"
3057 webm_dash_manifest_demuxer_select="matroska_demuxer"
3058 wtv_demuxer_select="mpegts_demuxer riffdec"
3059 wtv_muxer_select="mpegts_muxer riffenc"
3060 xmv_demuxer_select="riffdec"
3061 xwma_demuxer_select="riffdec"
3062
3063 # indevs / outdevs
3064 alsa_indev_deps="alsa"
3065 alsa_outdev_deps="alsa"
3066 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3067 avfoundation_indev_suggest="coregraphics applicationservices"
3068 avfoundation_indev_extralibs="-framework Foundation"
3069 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3070 caca_outdev_deps="libcaca"
3071 decklink_deps_any="libdl LoadLibrary"
3072 decklink_indev_deps="decklink threads"
3073 decklink_indev_extralibs="-lstdc++"
3074 decklink_outdev_deps="decklink threads"
3075 decklink_outdev_extralibs="-lstdc++"
3076 libndi_newtek_indev_deps="libndi_newtek"
3077 libndi_newtek_indev_extralibs="-lndi"
3078 libndi_newtek_outdev_deps="libndi_newtek"
3079 libndi_newtek_outdev_extralibs="-lndi"
3080 dshow_indev_deps="IBaseFilter"
3081 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3082 fbdev_indev_deps="linux_fb_h"
3083 fbdev_outdev_deps="linux_fb_h"
3084 gdigrab_indev_deps="CreateDIBSection"
3085 gdigrab_indev_extralibs="-lgdi32"
3086 gdigrab_indev_select="bmp_decoder"
3087 iec61883_indev_deps="libiec61883"
3088 jack_indev_deps="libjack"
3089 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3090 kmsgrab_indev_deps="libdrm"
3091 lavfi_indev_deps="avfilter"
3092 libcdio_indev_deps="libcdio"
3093 libdc1394_indev_deps="libdc1394"
3094 openal_indev_deps="openal"
3095 opengl_outdev_deps="opengl"
3096 oss_indev_deps_any="sys_soundcard_h"
3097 oss_outdev_deps_any="sys_soundcard_h"
3098 pulse_indev_deps="libpulse"
3099 pulse_outdev_deps="libpulse"
3100 sdl2_outdev_deps="sdl2"
3101 sndio_indev_deps="sndio"
3102 sndio_outdev_deps="sndio"
3103 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3104 v4l2_indev_suggest="libv4l2"
3105 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3106 v4l2_outdev_suggest="libv4l2"
3107 vfwcap_indev_deps="vfw32 vfwcap_defines"
3108 xcbgrab_indev_deps="libxcb"
3109 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3110 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3111 xv_outdev_extralibs="-lXv -lX11 -lXext"
3112
3113 # protocols
3114 async_protocol_deps="threads"
3115 bluray_protocol_deps="libbluray"
3116 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3117 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3118 ffrtmpcrypt_protocol_select="tcp_protocol"
3119 ffrtmphttp_protocol_conflict="librtmp_protocol"
3120 ffrtmphttp_protocol_select="http_protocol"
3121 ftp_protocol_select="tcp_protocol"
3122 gopher_protocol_select="network"
3123 http_protocol_select="tcp_protocol"
3124 http_protocol_suggest="zlib"
3125 httpproxy_protocol_select="tcp_protocol"
3126 httpproxy_protocol_suggest="zlib"
3127 https_protocol_select="tls_protocol"
3128 https_protocol_suggest="zlib"
3129 icecast_protocol_select="http_protocol"
3130 librtmp_protocol_deps="librtmp"
3131 librtmpe_protocol_deps="librtmp"
3132 librtmps_protocol_deps="librtmp"
3133 librtmpt_protocol_deps="librtmp"
3134 librtmpte_protocol_deps="librtmp"
3135 libsmbclient_protocol_deps="libsmbclient gplv3"
3136 libssh_protocol_deps="libssh"
3137 mmsh_protocol_select="http_protocol"
3138 mmst_protocol_select="network"
3139 rtmp_protocol_conflict="librtmp_protocol"
3140 rtmp_protocol_select="tcp_protocol"
3141 rtmp_protocol_suggest="zlib"
3142 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3143 rtmpe_protocol_suggest="zlib"
3144 rtmps_protocol_conflict="librtmp_protocol"
3145 rtmps_protocol_select="tls_protocol"
3146 rtmps_protocol_suggest="zlib"
3147 rtmpt_protocol_select="ffrtmphttp_protocol"
3148 rtmpt_protocol_suggest="zlib"
3149 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3150 rtmpte_protocol_suggest="zlib"
3151 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3152 rtmpts_protocol_suggest="zlib"
3153 rtp_protocol_select="udp_protocol"
3154 schannel_conflict="openssl gnutls"
3155 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3156 sctp_protocol_select="network"
3157 securetransport_conflict="openssl gnutls"
3158 srtp_protocol_select="rtp_protocol srtp"
3159 tcp_protocol_select="network"
3160 tls_protocol_deps_any="gnutls openssl schannel securetransport"
3161 tls_protocol_select="tcp_protocol"
3162 udp_protocol_select="network"
3163 udplite_protocol_select="network"
3164 unix_protocol_deps="sys_un_h"
3165 unix_protocol_select="network"
3166
3167 # filters
3168 afftfilt_filter_deps="avcodec"
3169 afftfilt_filter_select="fft"
3170 afir_filter_deps="avcodec"
3171 afir_filter_select="fft"
3172 amovie_filter_deps="avcodec avformat"
3173 aresample_filter_deps="swresample"
3174 ass_filter_deps="libass"
3175 atempo_filter_deps="avcodec"
3176 atempo_filter_select="rdft"
3177 azmq_filter_deps="libzmq"
3178 blackframe_filter_deps="gpl"
3179 boxblur_filter_deps="gpl"
3180 bs2b_filter_deps="libbs2b"
3181 colormatrix_filter_deps="gpl"
3182 coreimage_filter_deps="coreimage appkit"
3183 coreimage_filter_extralibs="-framework OpenGL"
3184 coreimagesrc_filter_deps="coreimage appkit"
3185 coreimagesrc_filter_extralibs="-framework OpenGL"
3186 cover_rect_filter_deps="avcodec avformat gpl"
3187 cropdetect_filter_deps="gpl"
3188 deinterlace_qsv_filter_deps="libmfx"
3189 deinterlace_vaapi_filter_deps="vaapi"
3190 delogo_filter_deps="gpl"
3191 deshake_filter_select="pixelutils"
3192 drawtext_filter_deps="libfreetype"
3193 drawtext_filter_suggest="libfontconfig libfribidi"
3194 elbg_filter_deps="avcodec"
3195 eq_filter_deps="gpl"
3196 fftfilt_filter_deps="avcodec"
3197 fftfilt_filter_select="rdft"
3198 find_rect_filter_deps="avcodec avformat gpl"
3199 firequalizer_filter_deps="avcodec"
3200 firequalizer_filter_select="rdft"
3201 flite_filter_deps="libflite"
3202 framerate_filter_select="pixelutils"
3203 frei0r_filter_deps="frei0r libdl"
3204 frei0r_src_filter_deps="frei0r libdl"
3205 fspp_filter_deps="gpl"
3206 geq_filter_deps="gpl"
3207 histeq_filter_deps="gpl"
3208 hqdn3d_filter_deps="gpl"
3209 interlace_filter_deps="gpl"
3210 kerndeint_filter_deps="gpl"
3211 ladspa_filter_deps="ladspa libdl"
3212 lv2_filter_deps="lv2"
3213 mcdeint_filter_deps="avcodec gpl"
3214 movie_filter_deps="avcodec avformat"
3215 mpdecimate_filter_deps="gpl"
3216 mpdecimate_filter_select="pixelutils"
3217 mptestsrc_filter_deps="gpl"
3218 negate_filter_deps="lut_filter"
3219 nnedi_filter_deps="gpl"
3220 ocr_filter_deps="libtesseract"
3221 ocv_filter_deps="libopencv"
3222 overlay_opencl_filter_deps="opencl"
3223 overlay_qsv_filter_deps="libmfx"
3224 overlay_qsv_filter_select="qsvvpp"
3225 owdenoise_filter_deps="gpl"
3226 pan_filter_deps="swresample"
3227 perspective_filter_deps="gpl"
3228 phase_filter_deps="gpl"
3229 pp7_filter_deps="gpl"
3230 pp_filter_deps="gpl postproc"
3231 pullup_filter_deps="gpl"
3232 removelogo_filter_deps="avcodec avformat swscale"
3233 repeatfields_filter_deps="gpl"
3234 resample_filter_deps="avresample"
3235 rubberband_filter_deps="librubberband"
3236 sab_filter_deps="gpl swscale"
3237 scale2ref_filter_deps="swscale"
3238 scale_filter_deps="swscale"
3239 scale_qsv_filter_deps="libmfx"
3240 select_filter_select="pixelutils"
3241 showcqt_filter_deps="avcodec avformat swscale"
3242 showcqt_filter_suggest="libfontconfig libfreetype"
3243 showcqt_filter_select="fft"
3244 showfreqs_filter_deps="avcodec"
3245 showfreqs_filter_select="fft"
3246 showspectrum_filter_deps="avcodec"
3247 showspectrum_filter_select="fft"
3248 showspectrumpic_filter_deps="avcodec"
3249 showspectrumpic_filter_select="fft"
3250 signature_filter_deps="gpl avcodec avformat"
3251 smartblur_filter_deps="gpl swscale"
3252 sofalizer_filter_deps="libmysofa avcodec"
3253 sofalizer_filter_select="fft"
3254 spectrumsynth_filter_deps="avcodec"
3255 spectrumsynth_filter_select="fft"
3256 spp_filter_deps="gpl avcodec"
3257 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3258 stereo3d_filter_deps="gpl"
3259 subtitles_filter_deps="avformat avcodec libass"
3260 super2xsai_filter_deps="gpl"
3261 pixfmts_super2xsai_test_deps="super2xsai_filter"
3262 tinterlace_filter_deps="gpl"
3263 tinterlace_merge_test_deps="tinterlace_filter"
3264 tinterlace_pad_test_deps="tinterlace_filter"
3265 tonemap_filter_deps="const_nan"
3266 unsharp_opencl_filter_deps="opencl"
3267 uspp_filter_deps="gpl avcodec"
3268 vaguedenoiser_filter_deps="gpl"
3269 vidstabdetect_filter_deps="libvidstab"
3270 vidstabtransform_filter_deps="libvidstab"
3271 libvmaf_filter_deps="libvmaf"
3272 zmq_filter_deps="libzmq"
3273 zoompan_filter_deps="swscale"
3274 zscale_filter_deps="libzimg const_nan"
3275 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3276 vpp_qsv_filter_deps="libmfx"
3277 vpp_qsv_filter_select="qsvvpp"
3278
3279 # examples
3280 avio_dir_cmd_deps="avformat avutil"
3281 avio_reading_deps="avformat avcodec avutil"
3282 decode_audio_example_deps="avcodec avutil"
3283 decode_video_example_deps="avcodec avutil"
3284 demuxing_decoding_example_deps="avcodec avformat avutil"
3285 encode_audio_example_deps="avcodec avutil"
3286 encode_video_example_deps="avcodec avutil"
3287 extract_mvs_example_deps="avcodec avformat avutil"
3288 filter_audio_example_deps="avfilter avutil"
3289 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3290 filtering_video_example_deps="avfilter avcodec avformat avutil"
3291 http_multiclient_example_deps="avformat avutil fork"
3292 hw_decode_example_deps="avcodec avformat avutil"
3293 metadata_example_deps="avformat avutil"
3294 muxing_example_deps="avcodec avformat avutil swscale"
3295 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3296 remuxing_example_deps="avcodec avformat avutil"
3297 resampling_audio_example_deps="avutil swresample"
3298 scaling_video_example_deps="avutil swscale"
3299 transcode_aac_example_deps="avcodec avformat swresample"
3300 transcoding_example_deps="avfilter avcodec avformat avutil"
3301
3302 # EXTRALIBS_LIST
3303 cpu_init_extralibs="pthreads_extralibs"
3304 cws2fws_extralibs="zlib_extralibs"
3305
3306 # libraries, in linking order
3307 avcodec_deps="avutil"
3308 avcodec_suggest="libm"
3309 avcodec_select="null_bsf"
3310 avdevice_deps="avformat avcodec avutil"
3311 avdevice_suggest="libm"
3312 avfilter_deps="avutil"
3313 avfilter_suggest="libm"
3314 avformat_deps="avcodec avutil"
3315 avformat_suggest="libm network zlib"
3316 avresample_deps="avutil"
3317 avresample_suggest="libm"
3318 avutil_suggest="clock_gettime cuda libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3319 postproc_deps="avutil gpl"
3320 postproc_suggest="libm"
3321 swresample_deps="avutil"
3322 swresample_suggest="libm libsoxr"
3323 swscale_deps="avutil"
3324 swscale_suggest="libm"
3325
3326 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3327 avfilter_extralibs="pthreads_extralibs"
3328 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3329
3330 # programs
3331 ffmpeg_deps="avcodec avfilter avformat swresample"
3332 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3333                null_filter
3334                trim_filter"
3335 ffmpeg_suggest="ole32 psapi shell32"
3336 ffplay_deps="avcodec avformat swscale swresample sdl2"
3337 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3338 ffplay_suggest="shell32"
3339 ffprobe_deps="avcodec avformat"
3340 ffprobe_suggest="shell32"
3341 ffserver_deps="avformat fork sarestart"
3342 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3343
3344 # documentation
3345 podpages_deps="perl"
3346 manpages_deps="perl pod2man"
3347 htmlpages_deps="perl"
3348 htmlpages_deps_any="makeinfo_html texi2html"
3349 txtpages_deps="perl makeinfo"
3350 doc_deps_any="manpages htmlpages podpages txtpages"
3351
3352 # default parameters
3353
3354 logfile="ffbuild/config.log"
3355
3356 # installation paths
3357 prefix_default="/usr/local"
3358 bindir_default='${prefix}/bin'
3359 datadir_default='${prefix}/share/ffmpeg'
3360 docdir_default='${prefix}/share/doc/ffmpeg'
3361 incdir_default='${prefix}/include'
3362 libdir_default='${prefix}/lib'
3363 mandir_default='${prefix}/share/man'
3364
3365 # toolchain
3366 ar_default="ar"
3367 cc_default="gcc"
3368 cxx_default="g++"
3369 host_cc_default="gcc"
3370 doxygen_default="doxygen"
3371 install="install"
3372 ln_s_default="ln -s -f"
3373 nm_default="nm -g"
3374 pkg_config_default=pkg-config
3375 ranlib_default="ranlib"
3376 strip_default="strip"
3377 version_script='--version-script'
3378 objformat="elf32"
3379 x86asmexe_default="nasm"
3380 windres_default="windres"
3381 nvcc_default="nvcc"
3382 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3383 striptype="direct"
3384
3385 # OS
3386 target_os_default=$(tolower $(uname -s))
3387 host_os=$target_os_default
3388
3389 # machine
3390 if test "$target_os_default" = aix; then
3391     arch_default=$(uname -p)
3392     strip_default="strip -X32_64"
3393 else
3394     arch_default=$(uname -m)
3395 fi
3396 cpu="generic"
3397 intrinsics="none"
3398
3399 # configurable options
3400 enable $PROGRAM_LIST
3401 enable $DOCUMENT_LIST
3402 enable $EXAMPLE_LIST
3403 enable $(filter_out avresample $LIBRARY_LIST)
3404 enable stripping
3405
3406 enable asm
3407 enable debug
3408 enable doc
3409 enable faan faandct faanidct
3410 enable optimizations
3411 enable runtime_cpudetect
3412 enable safe_bitstream_reader
3413 enable static
3414 enable swscale_alpha
3415 enable valgrind_backtrace
3416
3417 sws_max_filter_size_default=256
3418 set_default sws_max_filter_size
3419
3420 # internal components are enabled by default
3421 enable $EXTRALIBS_LIST
3422
3423 # Avoid external, non-system, libraries getting enabled by dependency resolution
3424 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3425
3426 # build settings
3427 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3428 LIBPREF="lib"
3429 LIBSUF=".a"
3430 FULLNAME='$(NAME)$(BUILDSUF)'
3431 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3432 SLIBPREF="lib"
3433 SLIBSUF=".so"
3434 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3435 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3436 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3437 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3438 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3439 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3440 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3441
3442 asflags_filter=echo
3443 cflags_filter=echo
3444 ldflags_filter=echo
3445
3446 AS_C='-c'
3447 AS_O='-o $@'
3448 CC_C='-c'
3449 CC_E='-E -o $@'
3450 CC_O='-o $@'
3451 CXX_C='-c'
3452 CXX_O='-o $@'
3453 OBJCC_C='-c'
3454 OBJCC_E='-E -o $@'
3455 OBJCC_O='-o $@'
3456 X86ASM_O='-o $@'
3457 LD_O='-o $@'
3458 LD_LIB='-l%'
3459 LD_PATH='-L'
3460 HOSTCC_C='-c'
3461 HOSTCC_E='-E -o $@'
3462 HOSTCC_O='-o $@'
3463 HOSTLD_O='-o $@'
3464 NVCC_C='-c'
3465 NVCC_O='-o $@'
3466
3467 host_extralibs='-lm'
3468 host_cflags_filter=echo
3469 host_ldflags_filter=echo
3470
3471 target_path='$(CURDIR)'
3472
3473 # since the object filename is not given with the -MM flag, the compiler
3474 # is only able to print the basename, and we must add the path ourselves
3475 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3476 DEPFLAGS='-MM'
3477
3478 mkdir -p ffbuild
3479
3480 # find source path
3481 if test -f configure; then
3482     source_path=.
3483 else
3484     source_path=$(cd $(dirname "$0"); pwd)
3485     case "$source_path" in
3486         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3487     esac
3488     test -e "$source_path/config.h" &&
3489         die "Out of tree builds are impossible with config.h in source dir."
3490 fi
3491
3492 for v in "$@"; do
3493     r=${v#*=}
3494     l=${v%"$r"}
3495     r=$(sh_quote "$r")
3496     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3497 done
3498
3499 find_things(){
3500     thing=$1
3501     pattern=$2
3502     file=$source_path/$3
3503     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3504 }
3505
3506 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3507 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3508 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3509 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3510 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3511 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3512 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3513 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3514
3515 find_things_extern(){
3516     thing=$1
3517     pattern=$2
3518     file=$source_path/$3
3519     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3520 }
3521
3522 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3523 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3524 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3525
3526 AVCODEC_COMPONENTS_LIST="
3527     $BSF_LIST
3528     $DECODER_LIST
3529     $ENCODER_LIST
3530     $HWACCEL_LIST
3531     $PARSER_LIST
3532 "
3533
3534 AVDEVICE_COMPONENTS_LIST="
3535     $INDEV_LIST
3536     $OUTDEV_LIST
3537 "
3538
3539 AVFILTER_COMPONENTS_LIST="
3540     $FILTER_LIST
3541 "
3542
3543 AVFORMAT_COMPONENTS_LIST="
3544     $DEMUXER_LIST
3545     $MUXER_LIST
3546     $PROTOCOL_LIST
3547 "
3548
3549 ALL_COMPONENTS="
3550     $AVCODEC_COMPONENTS_LIST
3551     $AVDEVICE_COMPONENTS_LIST
3552     $AVFILTER_COMPONENTS_LIST
3553     $AVFORMAT_COMPONENTS_LIST
3554 "
3555
3556 for n in $COMPONENT_LIST; do
3557     v=$(toupper ${n%s})_LIST
3558     eval enable \$$v
3559     eval ${n}_if_any="\$$v"
3560 done
3561
3562 enable $ARCH_EXT_LIST
3563
3564 die_unknown(){
3565     echo "Unknown option \"$1\"."
3566     echo "See $0 --help for available options."
3567     exit 1
3568 }
3569
3570 print_in_columns() {
3571     cols=$(expr $ncols / 24)
3572     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3573 }
3574
3575 show_list() {
3576     suffix=_$1
3577     shift
3578     echo $* | sed s/$suffix//g | print_in_columns
3579     exit 0
3580 }
3581
3582 rand_list(){
3583     IFS=', '
3584     set -- $*
3585     unset IFS
3586     for thing; do
3587         comp=${thing%:*}
3588         prob=${thing#$comp}
3589         prob=${prob#:}
3590         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3591         echo "prob ${prob:-0.5}"
3592         printf '%s\n' $comp
3593     done
3594 }
3595
3596 do_random(){
3597     action=$1
3598     shift
3599     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3600     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3601 }
3602
3603 for opt do
3604     optval="${opt#*=}"
3605     case "$opt" in
3606         --extra-ldflags=*)
3607             add_ldflags $optval
3608         ;;
3609         --extra-ldexeflags=*)
3610             add_ldexeflags $optval
3611         ;;
3612         --extra-ldsoflags=*)
3613             add_ldsoflags $optval
3614         ;;
3615         --extra-ldlibflags=*)
3616             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3617                  "removed in the future. Use --extra-ldsoflags instead."
3618             add_ldsoflags $optval
3619         ;;
3620         --extra-libs=*)
3621             add_extralibs $optval
3622         ;;
3623         --disable-devices)
3624             disable $INDEV_LIST $OUTDEV_LIST
3625         ;;
3626         --enable-debug=*)
3627             debuglevel="$optval"
3628         ;;
3629         --disable-programs)
3630             disable $PROGRAM_LIST
3631         ;;
3632         --disable-everything)
3633             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3634         ;;
3635         --disable-all)
3636             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3637             disable $LIBRARY_LIST $PROGRAM_LIST doc
3638             enable avutil
3639         ;;
3640         --enable-random|--disable-random)
3641             action=${opt%%-random}
3642             do_random ${action#--} $COMPONENT_LIST
3643         ;;
3644         --enable-random=*|--disable-random=*)
3645             action=${opt%%-random=*}
3646             do_random ${action#--} $optval
3647         ;;
3648         --enable-sdl)
3649             enable sdl2
3650         ;;
3651         --enable-*=*|--disable-*=*)
3652             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3653             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3654             eval list=\$$(toupper $thing)_LIST
3655             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3656             list=$(filter "$name" $list)
3657             [ "$list" = "" ] && warn "Option $opt did not match anything"
3658             $action $list
3659         ;;
3660         --enable-yasm|--disable-yasm)
3661             warn "The ${opt} option is only provided for compatibility and will be\n"\
3662                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3663             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3664         ;;
3665         --yasmexe=*)
3666             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3667                  "removed in the future. Use --x86asmexe instead."
3668             x86asmexe="$optval"
3669         ;;
3670         --enable-?*|--disable-?*)
3671             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3672             if is_in $option $COMPONENT_LIST; then
3673                 test $action = disable && action=unset
3674                 eval $action \$$(toupper ${option%s})_LIST
3675             elif is_in $option $CMDLINE_SELECT; then
3676                 $action $option
3677             else
3678                 die_unknown $opt
3679             fi
3680         ;;
3681         --list-*)
3682             NAME="${opt#--list-}"
3683             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3684             NAME=${NAME%s}
3685             eval show_list $NAME \$$(toupper $NAME)_LIST
3686         ;;
3687         --help|-h) show_help
3688         ;;
3689         --quiet|-q) quiet=yes
3690         ;;
3691         --fatal-warnings) enable fatal_warnings
3692         ;;
3693         --libfuzzer=*)
3694             libfuzzer_path="$optval"
3695         ;;
3696         *)
3697             optname="${opt%%=*}"
3698             optname="${optname#--}"
3699             optname=$(echo "$optname" | sed 's/-/_/g')
3700             if is_in $optname $CMDLINE_SET; then
3701                 eval $optname='$optval'
3702             elif is_in $optname $CMDLINE_APPEND; then
3703                 append $optname "$optval"
3704             else
3705                 die_unknown $opt
3706             fi
3707         ;;
3708     esac
3709 done
3710
3711 for e in $env; do
3712     eval "export $e"
3713 done
3714
3715 if disabled autodetect; then
3716
3717     # Unless iconv is explicitely disabled by the user, we still want to probe
3718     # for the iconv from the libc.
3719     disabled iconv || enable libc_iconv
3720
3721     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3722     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3723 fi
3724 # Mark specifically enabled, but normally autodetected libraries as requested.
3725 for lib in $AUTODETECT_LIBS; do
3726     enabled $lib && request $lib
3727 done
3728 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3729 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3730 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3731
3732 disabled logging && logfile=/dev/null
3733
3734 # command line configuration sanity checks
3735
3736 # we need to build at least one lib type
3737 if ! enabled_any static shared; then
3738     cat <<EOF
3739 At least one library type must be built.
3740 Specify --enable-static to build the static libraries or --enable-shared to
3741 build the shared libraries as well. To only build the shared libraries specify
3742 --disable-static in addition to --enable-shared.
3743 EOF
3744     exit 1
3745 fi
3746
3747 die_license_disabled() {
3748     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3749 }
3750
3751 die_license_disabled_gpl() {
3752     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3753 }
3754
3755 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3756 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3757
3758 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3759 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3760
3761 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3762
3763 enabled_all gnutls openssl &&
3764     die "GnuTLS and OpenSSL must not be enabled at the same time."
3765
3766 # Disable all the library-specific components if the library itself
3767 # is disabled, see AVCODEC_LIST and following _LIST variables.
3768
3769 disable_components(){
3770     disabled ${1} && disable $(
3771         eval components="\$$(toupper ${1})_COMPONENTS"
3772         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3773     )
3774 }
3775
3776 map 'disable_components $v' $LIBRARY_LIST
3777
3778 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3779 set >> $logfile
3780
3781 test -n "$valgrind" && toolchain="valgrind-memcheck"
3782
3783 enabled ossfuzz && {
3784     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3785     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3786 }
3787
3788 case "$toolchain" in
3789     *-asan)
3790         cc_default="${toolchain%-asan}"
3791         add_cflags  -fsanitize=address
3792         add_ldflags -fsanitize=address
3793     ;;
3794     *-msan)
3795         cc_default="${toolchain%-msan}"
3796         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3797         add_ldflags -fsanitize=memory
3798     ;;
3799     *-tsan)
3800         cc_default="${toolchain%-tsan}"
3801         add_cflags  -fsanitize=thread -fPIE
3802         add_ldflags -fsanitize=thread -pie
3803         case "$toolchain" in
3804             gcc-tsan)
3805                 add_cflags  -fPIC
3806                 add_ldflags -fPIC
3807                 ;;
3808         esac
3809     ;;
3810     *-usan)
3811         cc_default="${toolchain%-usan}"
3812         add_cflags  -fsanitize=undefined
3813         add_ldflags -fsanitize=undefined
3814     ;;
3815     valgrind-*)
3816         target_exec_default="valgrind"
3817         case "$toolchain" in
3818             valgrind-massif)
3819                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3820                 ;;
3821             valgrind-memcheck)
3822                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3823                 ;;
3824         esac
3825     ;;
3826     msvc)
3827         # Check whether the current MSVC version needs the C99 converter.
3828         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3829         # support enough of C99 to build ffmpeg. Default to the new
3830         # behaviour if the regexp was unable to match anything, since this
3831         # successfully parses the version number of existing supported
3832         # versions that require the converter (MSVC 2010 and 2012).
3833         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3834         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3835             cc_default="cl"
3836             cxx_default="cl"
3837         else
3838             cc_default="c99wrap cl"
3839             cxx_default="c99wrap cl"
3840         fi
3841         ld_default="$source_path/compat/windows/mslink"
3842         nm_default="dumpbin -symbols"
3843         ar_default="lib"
3844         case "$arch" in
3845         aarch64|arm64)
3846             as_default="armasm64"
3847             ;;
3848         arm*)
3849             as_default="armasm"
3850             ;;
3851         esac
3852         target_os_default="win32"
3853         # Use a relative path for TMPDIR. This makes sure all the
3854         # ffconf temp files are written with a relative path, avoiding
3855         # issues with msys/win32 path conversion for MSVC parameters
3856         # such as -Fo<file> or -out:<file>.
3857         TMPDIR=.
3858     ;;
3859     icl)
3860         cc_default="icl"
3861         ld_default="xilink"
3862         nm_default="dumpbin -symbols"
3863         ar_default="xilib"
3864         target_os_default="win32"
3865         TMPDIR=.
3866     ;;
3867     gcov)
3868         add_cflags  -fprofile-arcs -ftest-coverage
3869         add_ldflags -fprofile-arcs -ftest-coverage
3870     ;;
3871     llvm-cov)
3872         add_cflags -fprofile-arcs -ftest-coverage
3873         add_ldflags --coverage
3874     ;;
3875     hardened)
3876         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3877         add_cflags   -fno-strict-overflow -fstack-protector-all
3878         add_ldflags  -Wl,-z,relro -Wl,-z,now
3879         add_cflags   -fPIE
3880         add_ldexeflags -fPIE -pie
3881     ;;
3882     ?*)
3883         die "Unknown toolchain $toolchain"
3884     ;;
3885 esac
3886
3887 if test -n "$cross_prefix"; then
3888     test -n "$arch" && test -n "$target_os" ||
3889         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3890     enable cross_compile
3891 fi
3892
3893 ar_default="${cross_prefix}${ar_default}"
3894 cc_default="${cross_prefix}${cc_default}"
3895 cxx_default="${cross_prefix}${cxx_default}"
3896 nm_default="${cross_prefix}${nm_default}"
3897 pkg_config_default="${cross_prefix}${pkg_config_default}"
3898 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3899     ranlib_default="${cross_prefix}${ranlib_default} -D"
3900 else
3901     ranlib_default="${cross_prefix}${ranlib_default}"
3902 fi
3903 strip_default="${cross_prefix}${strip_default}"
3904 windres_default="${cross_prefix}${windres_default}"
3905
3906 sysinclude_default="${sysroot}/usr/include"
3907
3908 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3909     target_exec target_os x86asmexe nvcc
3910 enabled cross_compile || host_cc_default=$cc
3911 set_default host_cc
3912
3913 pkg_config_fail_message=""
3914 if ! $pkg_config --version >/dev/null 2>&1; then
3915     warn "$pkg_config not found, library detection may fail."
3916     pkg_config=false
3917 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3918     pkg_config_fail_message="
3919 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3920 fi
3921
3922 if test $doxygen != $doxygen_default && \
3923   ! $doxygen --version >/dev/null 2>&1; then
3924     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3925 fi
3926
3927 exesuf() {
3928     case $1 in
3929         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3930     esac
3931 }
3932
3933 EXESUF=$(exesuf $target_os)
3934 HOSTEXESUF=$(exesuf $host_os)
3935
3936 # set temporary file name
3937 : ${TMPDIR:=$TEMPDIR}
3938 : ${TMPDIR:=$TMP}
3939 : ${TMPDIR:=/tmp}
3940
3941 if [ -n "$tempprefix" ] ; then
3942     mktemp(){
3943         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3944         echo "$tmpname"
3945         mkdir "$tmpname"
3946     }
3947 elif ! check_cmd mktemp -u XXXXXX; then
3948     # simple replacement for missing mktemp
3949     # NOT SAFE FOR GENERAL USE
3950     mktemp(){
3951         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3952         echo "$tmpname"
3953         mkdir "$tmpname"
3954     }
3955 fi
3956
3957 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3958     die "Unable to create temporary directory in $TMPDIR."
3959
3960 tmpfile(){
3961     tmp="${FFTMPDIR}/test"$2
3962     (set -C; exec > $tmp) 2> /dev/null ||
3963         die "Unable to create temporary file in $FFTMPDIR."
3964     eval $1=$tmp
3965 }
3966
3967 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3968 trap 'exit 2' INT
3969
3970 tmpfile TMPASM .asm
3971 tmpfile TMPC   .c
3972 tmpfile TMPCPP .cpp
3973 tmpfile TMPE   $EXESUF
3974 tmpfile TMPH   .h
3975 tmpfile TMPM   .m
3976 tmpfile TMPO   .o
3977 tmpfile TMPS   .S
3978 tmpfile TMPSH  .sh
3979 tmpfile TMPV   .ver
3980
3981 unset -f mktemp
3982
3983 chmod +x $TMPE
3984
3985 # make sure we can execute files in $TMPDIR
3986 cat > $TMPSH 2>> $logfile <<EOF
3987 #! /bin/sh
3988 EOF
3989 chmod +x $TMPSH >> $logfile 2>&1
3990 if ! $TMPSH >> $logfile 2>&1; then
3991     cat <<EOF
3992 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3993 variable to another directory and make sure that it is not mounted noexec.
3994 EOF
3995     die "Sanity test failed."
3996 fi
3997
3998 armasm_flags(){
3999     for flag; do
4000         case $flag in
4001             # Filter out MSVC cl.exe options from cflags that shouldn't
4002             # be passed to gas-preprocessor
4003             -M[TD]*)                                            ;;
4004             *)                  echo $flag                      ;;
4005         esac
4006    done
4007 }
4008
4009 cparser_flags(){
4010     for flag; do
4011         case $flag in
4012             -Wno-switch)             echo -Wno-switch-enum ;;
4013             -Wno-format-zero-length) ;;
4014             -Wdisabled-optimization) ;;
4015             -Wno-pointer-sign)       echo -Wno-other ;;
4016             *)                       echo $flag ;;
4017         esac
4018     done
4019 }
4020
4021 msvc_common_flags(){
4022     for flag; do
4023         case $flag in
4024             # In addition to specifying certain flags under the compiler
4025             # specific filters, they must be specified here as well or else the
4026             # generic catch all at the bottom will print the original flag.
4027             -Wall)                ;;
4028             -Wextra)              ;;
4029             -std=c99)             ;;
4030             # Common flags
4031             -fomit-frame-pointer) ;;
4032             -g)                   echo -Z7 ;;
4033             -fno-math-errno)      ;;
4034             -fno-common)          ;;
4035             -fno-signed-zeros)    ;;
4036             -fPIC)                ;;
4037             -mthumb)              ;;
4038             -march=*)             ;;
4039             -lz)                  echo zlib.lib ;;
4040             -lx264)               echo libx264.lib ;;
4041             -lstdc++)             ;;
4042             -l*)                  echo ${flag#-l}.lib ;;
4043             -LARGEADDRESSAWARE)   echo $flag ;;
4044             -L*)                  echo -libpath:${flag#-L} ;;
4045             *)                    echo $flag ;;
4046         esac
4047     done
4048 }
4049
4050 msvc_flags(){
4051     msvc_common_flags "$@"
4052     for flag; do
4053         case $flag in
4054             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4055                                        -wd4554 ;;
4056             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4057                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4058                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4059                                        -wd4307 \
4060                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4061         esac
4062     done
4063 }
4064
4065 icl_flags(){
4066     msvc_common_flags "$@"
4067     for flag; do
4068         case $flag in
4069             # Despite what Intel's documentation says -Wall, which is supported
4070             # on Windows, does enable remarks so disable them here.
4071             -Wall)                echo $flag -Qdiag-disable:remark ;;
4072             -std=c99)             echo -Qstd=c99 ;;
4073             -flto)                echo -ipo ;;
4074         esac
4075     done
4076 }
4077
4078 icc_flags(){
4079     for flag; do
4080         case $flag in
4081             -flto)                echo -ipo ;;
4082             *)                    echo $flag ;;
4083         esac
4084     done
4085 }
4086
4087 suncc_flags(){
4088     for flag; do
4089         case $flag in
4090             -march=*|-mcpu=*)
4091                 case "${flag#*=}" in
4092                     native)                   echo -xtarget=native       ;;
4093                     v9|niagara)               echo -xarch=sparc          ;;
4094                     ultrasparc)               echo -xarch=sparcvis       ;;
4095                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4096                     i586|pentium)             echo -xchip=pentium        ;;
4097                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4098                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4099                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4100                     pentium4*)          echo -xtarget=pentium4           ;;
4101                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4102                     *-sse3)             echo -xarch=sse3                 ;;
4103                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4104                     bonnell)                   echo -xarch=ssse3         ;;
4105                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4106                     westmere)                  echo -xtarget=westmere    ;;
4107                     silvermont)                echo -xarch=sse4_2        ;;
4108                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4109                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4110                                                echo -xarch=avx           ;;
4111                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4112                     btver1)                    echo -xarch=amdsse4a      ;;
4113                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4114                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4115                     k8|opteron|athlon64|athlon-fx)
4116                                                echo -xarch=sse2a         ;;
4117                     athlon*)                   echo -xarch=pentium_proa  ;;
4118                 esac
4119                 ;;
4120             -std=c99)             echo -xc99              ;;
4121             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4122             -fPIC)                echo -KPIC -xcode=pic32 ;;
4123             -W*,*)                echo $flag              ;;
4124             -f*-*|-W*|-mimpure-text)                      ;;
4125             -shared)              echo -G                 ;;
4126             *)                    echo $flag              ;;
4127         esac
4128     done
4129 }
4130
4131 probe_cc(){
4132     pfx=$1
4133     _cc=$2
4134     first=$3
4135
4136     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4137     unset _ld_o _ldflags _ld_lib _ld_path
4138     unset _depflags _DEPCMD _DEPFLAGS
4139     _flags_filter=echo
4140
4141     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4142         true # no-op to avoid reading stdin in following checks
4143     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4144         _type=llvm_gcc
4145         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4146         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4147         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4148         _cflags_speed='-O3'
4149         _cflags_size='-Os'
4150     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4151         _type=gcc
4152         gcc_version=$($_cc --version | head -n1)
4153         gcc_basever=$($_cc -dumpversion)
4154         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4155         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4156         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4157         case $gcc_basever in
4158             2) ;;
4159             2.*) ;;
4160             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4161         esac
4162         if [ "$first" = true ]; then
4163             case $gcc_basever in
4164                 4.2*)
4165                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4166             esac
4167         fi
4168         _cflags_speed='-O3'
4169         _cflags_size='-Os'
4170     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4171         _type=icc
4172         _ident=$($_cc --version | head -n1)
4173         _depflags='-MMD'
4174         _cflags_speed='-O3'
4175         _cflags_size='-Os'
4176         _cflags_noopt='-O1'
4177         _flags_filter=icc_flags
4178     elif $_cc -v 2>&1 | grep -q xlc; then
4179         _type=xlc
4180         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4181         _cflags_speed='-O5'
4182         _cflags_size='-O5 -qcompact'
4183     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4184         test -d "$sysroot" || die "No valid sysroot specified."
4185         _type=armcc
4186         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4187         armcc_conf="$PWD/armcc.conf"
4188         $_cc --arm_linux_configure                 \
4189              --arm_linux_config_file="$armcc_conf" \
4190              --configure_sysroot="$sysroot"        \
4191              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4192              die "Error creating armcc configuration file."
4193         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4194         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4195         as_default="${cross_prefix}gcc"
4196         _depflags='-MMD'
4197         _cflags_speed='-O3'
4198         _cflags_size='-Os'
4199     elif $_cc -v 2>&1 | grep -q clang; then
4200         _type=clang
4201         _ident=$($_cc --version 2>/dev/null | head -n1)
4202         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4203         _cflags_speed='-O3'
4204         _cflags_size='-Oz'
4205     elif $_cc -V 2>&1 | grep -q Sun; then
4206         _type=suncc
4207         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4208         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4209         _DEPFLAGS='-xM1 -xc99'
4210         _ldflags='-std=c99'
4211         _cflags_speed='-O5'
4212         _cflags_size='-O5 -xspace'
4213         _flags_filter=suncc_flags
4214     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4215         _type=pathscale
4216         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4217         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4218         _cflags_speed='-O2'
4219         _cflags_size='-Os'
4220         _flags_filter='filter_out -Wdisabled-optimization'
4221     elif $_cc -v 2>&1 | grep -q Open64; then
4222         _type=open64
4223         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4224         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4225         _cflags_speed='-O2'
4226         _cflags_size='-Os'
4227         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4228     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4229         _type=armasm
4230         _ident=$($_cc | head -n1)
4231         # 4509: "This form of conditional instruction is deprecated"
4232         _flags="-nologo -ignore 4509"
4233         _flags_filter=armasm_flags
4234     elif $_cc 2>&1 | grep -q Intel; then
4235         _type=icl
4236         _ident=$($_cc 2>&1 | head -n1)
4237         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4238         # Not only is O3 broken on 13.x+ but it is slower on all previous
4239         # versions (tested) as well.
4240         _cflags_speed="-O2"
4241         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4242         if $_cc 2>&1 | grep -q Linker; then
4243             _ld_o='-out:$@'
4244         else
4245             _ld_o='-Fe$@'
4246         fi
4247         _cc_o='-Fo$@'
4248         _cc_e='-P'
4249         _flags_filter=icl_flags
4250         _ld_lib='lib%.a'
4251         _ld_path='-libpath:'
4252         # -Qdiag-error to make icl error when seeing certain unknown arguments
4253         _flags='-nologo -Qdiag-error:4044,10157'
4254         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4255         # with MSVC which enables it by default.
4256         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4257         disable stripping
4258     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4259         # lld can emulate multiple different linkers; in ms link.exe mode,
4260         # the -? parameter gives the help output which contains an identifyable
4261         # string, while it gives an error in other modes.
4262         _type=lld-link
4263         # The link.exe mode doesn't have a switch for getting the version,
4264         # but we can force it back to gnu mode and get the version from there.
4265         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4266         _ld_o='-out:$@'
4267         _flags_filter=msvc_flags
4268         _ld_lib='lib%.a'
4269         _ld_path='-libpath:'
4270     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4271         _type=msvc
4272         _ident=$($_cc 2>&1 | head -n1)
4273         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4274         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4275         _cflags_speed="-O2"
4276         _cflags_size="-O1"
4277         _cflags_noopt="-O1"
4278         if $_cc -nologo- 2>&1 | grep -q Linker; then
4279             _ld_o='-out:$@'
4280         else
4281             _ld_o='-Fe$@'
4282         fi
4283         _cc_o='-Fo$@'
4284         _cc_e='-P -Fi$@'
4285         _flags_filter=msvc_flags
4286         _ld_lib='lib%.a'
4287         _ld_path='-libpath:'
4288         _flags='-nologo'
4289         disable stripping
4290     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4291         _type=cparser
4292         _ident=$($_cc --version | head -n1)
4293         _depflags='-MMD'
4294         _cflags_speed='-O4'
4295         _cflags_size='-O2'
4296         _flags_filter=cparser_flags
4297     fi
4298
4299     eval ${pfx}_type=\$_type
4300     eval ${pfx}_ident=\$_ident
4301 }
4302
4303 set_ccvars(){
4304     eval ${1}_C=\${_cc_c-\${${1}_C}}
4305     eval ${1}_E=\${_cc_e-\${${1}_E}}
4306     eval ${1}_O=\${_cc_o-\${${1}_O}}
4307
4308     if [ -n "$_depflags" ]; then
4309         eval ${1}_DEPFLAGS=\$_depflags
4310     else
4311         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4312         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4313         eval DEP${1}FLAGS=\$_flags
4314     fi
4315 }
4316
4317 probe_cc cc "$cc" "true"
4318 cflags_filter=$_flags_filter
4319 cflags_speed=$_cflags_speed
4320 cflags_size=$_cflags_size
4321 cflags_noopt=$_cflags_noopt
4322 add_cflags $_flags $_cflags
4323 cc_ldflags=$_ldflags
4324 set_ccvars CC
4325 set_ccvars CXX
4326
4327 probe_cc hostcc "$host_cc"
4328 host_cflags_filter=$_flags_filter
4329 host_cflags_speed=$_cflags_speed
4330 add_host_cflags  $_flags $_cflags
4331 set_ccvars HOSTCC
4332
4333 test -n "$cc_type" && enable $cc_type ||
4334     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4335
4336 : ${as_default:=$cc}
4337 : ${objcc_default:=$cc}
4338 : ${dep_cc_default:=$cc}
4339 : ${ld_default:=$cc}
4340 : ${host_ld_default:=$host_cc}
4341 set_default ar as objcc dep_cc ld ln_s host_ld windres
4342
4343 probe_cc as "$as"
4344 asflags_filter=$_flags_filter
4345 add_asflags $_flags $_cflags
4346 set_ccvars AS
4347
4348 probe_cc objcc "$objcc"
4349 objcflags_filter=$_flags_filter
4350 add_objcflags $_flags $_cflags
4351 set_ccvars OBJC
4352
4353 probe_cc ld "$ld"
4354 ldflags_filter=$_flags_filter
4355 add_ldflags $_flags $_ldflags
4356 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4357 LD_O=${_ld_o-$LD_O}
4358 LD_LIB=${_ld_lib-$LD_LIB}
4359 LD_PATH=${_ld_path-$LD_PATH}
4360
4361 probe_cc hostld "$host_ld"
4362 host_ldflags_filter=$_flags_filter
4363 add_host_ldflags $_flags $_ldflags
4364 HOSTLD_O=${_ld_o-$HOSTLD_O}
4365
4366 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4367     probe_cc depcc "$dep_cc"
4368     CCDEP=${_DEPCMD:-$DEPCMD}
4369     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4370     DEPCCFLAGS=$_flags
4371 fi
4372
4373 if $ar 2>&1 | grep -q Microsoft; then
4374     arflags="-nologo"
4375     ar_o='-out:$@'
4376 elif $ar 2>&1 | grep -q "\[D\] "; then
4377     arflags="rcD"
4378     ar_o='$@'
4379 else
4380     arflags="rc"
4381     ar_o='$@'
4382 fi
4383
4384 add_cflags $extra_cflags
4385 add_cxxflags $extra_cxxflags
4386 add_objcflags $extra_objcflags
4387 add_asflags $extra_cflags
4388
4389 if test -n "$sysroot"; then
4390     case "$cc_type" in
4391         gcc|llvm_gcc|clang)
4392             add_cppflags --sysroot="$sysroot"
4393             add_ldflags --sysroot="$sysroot"
4394         ;;
4395     esac
4396 fi
4397
4398 if test "$cpu" = host; then
4399     enabled cross_compile &&
4400         die "--cpu=host makes no sense when cross-compiling."
4401
4402     case "$cc_type" in
4403         gcc|llvm_gcc)
4404             check_native(){
4405                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4406                 sed -n "/cc1.*$1=/{
4407                             s/.*$1=\\([^ ]*\\).*/\\1/
4408                             p
4409                             q
4410                         }" $TMPE
4411             }
4412             cpu=$(check_native -march || check_native -mcpu)
4413         ;;
4414         clang)
4415             check_native(){
4416                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4417                 sed -n "/cc1.*-target-cpu /{
4418                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4419                             p
4420                             q
4421                         }" $TMPE
4422             }
4423             cpu=$(check_native -march)
4424         ;;
4425     esac
4426
4427     test "${cpu:-host}" = host &&
4428         die "--cpu=host not supported with compiler $cc"
4429 fi
4430
4431 # Deal with common $arch aliases
4432 case "$arch" in
4433     aarch64|arm64)
4434         arch="aarch64"
4435     ;;
4436     arm*|iPad*|iPhone*)
4437         arch="arm"
4438     ;;
4439     mips*|IP*)
4440         case "$arch" in
4441         *el)
4442             add_cppflags -EL
4443             add_ldflags -EL
4444         ;;
4445         *eb)
4446             add_cppflags -EB
4447             add_ldflags -EB
4448         ;;
4449         esac
4450         arch="mips"
4451     ;;
4452     parisc*|hppa*)
4453         arch="parisc"
4454     ;;
4455     "Power Macintosh"|ppc*|powerpc*)
4456         arch="ppc"
4457     ;;
4458     s390|s390x)
4459         arch="s390"
4460     ;;
4461     sh4|sh)
4462         arch="sh4"
4463     ;;
4464     sun4*|sparc*)
4465         arch="sparc"
4466     ;;
4467     tilegx|tile-gx)
4468         arch="tilegx"
4469     ;;
4470     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4471         arch="x86"
4472     ;;
4473 esac
4474
4475 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4476 enable $arch
4477
4478 # Add processor-specific flags
4479 if enabled aarch64; then
4480
4481     case $cpu in
4482         armv*)
4483             cpuflags="-march=$cpu"
4484         ;;
4485         *)
4486             cpuflags="-mcpu=$cpu"
4487         ;;
4488     esac
4489
4490 elif enabled alpha; then
4491
4492     cpuflags="-mcpu=$cpu"
4493
4494 elif enabled arm; then
4495
4496     check_arm_arch() {
4497         check_cpp_condition stddef.h \
4498             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4499             $cpuflags
4500     }
4501
4502     probe_arm_arch() {
4503         if   check_arm_arch 4;        then echo armv4
4504         elif check_arm_arch 4T;       then echo armv4t
4505         elif check_arm_arch 5;        then echo armv5
4506         elif check_arm_arch 5E;       then echo armv5e
4507         elif check_arm_arch 5T;       then echo armv5t
4508         elif check_arm_arch 5TE;      then echo armv5te
4509         elif check_arm_arch 5TEJ;     then echo armv5te
4510         elif check_arm_arch 6;        then echo armv6
4511         elif check_arm_arch 6J;       then echo armv6j
4512         elif check_arm_arch 6K;       then echo armv6k
4513         elif check_arm_arch 6Z;       then echo armv6z
4514         elif check_arm_arch 6ZK;      then echo armv6zk
4515         elif check_arm_arch 6T2;      then echo armv6t2
4516         elif check_arm_arch 7;        then echo armv7
4517         elif check_arm_arch 7A  7_A;  then echo armv7-a
4518         elif check_arm_arch 7S;       then echo armv7-a
4519         elif check_arm_arch 7R  7_R;  then echo armv7-r
4520         elif check_arm_arch 7M  7_M;  then echo armv7-m
4521         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4522         elif check_arm_arch 8A  8_A;  then echo armv8-a
4523         fi
4524     }
4525
4526     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4527
4528     case $cpu in
4529         armv*)
4530             cpuflags="-march=$cpu"
4531             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4532         ;;
4533         *)
4534             cpuflags="-mcpu=$cpu"
4535             case $cpu in
4536                 cortex-a*)                               subarch=armv7a  ;;
4537                 cortex-r*)                               subarch=armv7r  ;;
4538                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4539                 arm11*)                                  subarch=armv6   ;;
4540                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4541                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4542                 *)                             subarch=$(probe_arm_arch) ;;
4543             esac
4544         ;;
4545     esac
4546
4547     case "$subarch" in
4548         armv5t*)    enable fast_clz                ;;
4549         armv[6-8]*)
4550             enable fast_clz
4551             disabled fast_unaligned || enable fast_unaligned
4552             ;;
4553     esac
4554
4555 elif enabled avr32; then
4556
4557     case $cpu in
4558         ap7[02]0[0-2])
4559             subarch="avr32_ap"
4560             cpuflags="-mpart=$cpu"
4561         ;;
4562         ap)
4563             subarch="avr32_ap"
4564             cpuflags="-march=$cpu"
4565         ;;
4566         uc3[ab]*)
4567             subarch="avr32_uc"
4568             cpuflags="-mcpu=$cpu"
4569         ;;
4570         uc)
4571             subarch="avr32_uc"
4572             cpuflags="-march=$cpu"
4573         ;;
4574     esac
4575
4576 elif enabled bfin; then
4577
4578     cpuflags="-mcpu=$cpu"
4579
4580 elif enabled mips; then
4581
4582     cpuflags="-march=$cpu"
4583
4584     if [ "$cpu" != "generic" ]; then
4585         disable mips32r2
4586         disable mips32r5
4587         disable mips64r2
4588         disable mips32r6
4589         disable mips64r6
4590         disable loongson2
4591         disable loongson3
4592
4593         case $cpu in
4594             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4595                 enable mips32r2
4596                 disable msa
4597             ;;
4598             p5600|i6400|p6600)
4599                 disable mipsdsp
4600                 disable mipsdspr2
4601             ;;
4602             loongson*)
4603                 enable loongson2
4604                 enable loongson3
4605                 enable local_aligned
4606                 enable simd_align_16
4607                 enable fast_64bit
4608                 enable fast_clz
4609                 enable fast_cmov
4610                 enable fast_unaligned
4611                 disable aligned_stack
4612                 disable mipsfpu
4613                 disable mipsdsp
4614                 disable mipsdspr2
4615                 case $cpu in
4616                     loongson3*)
4617                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4618                     ;;
4619                     loongson2e)
4620                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4621                     ;;
4622                     loongson2f)
4623                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4624                     ;;
4625                 esac
4626             ;;
4627             *)
4628                 # Unknown CPU. Disable everything.
4629                 warn "unknown CPU. Disabling all MIPS optimizations."
4630                 disable mipsfpu
4631                 disable mipsdsp
4632                 disable mipsdspr2
4633                 disable msa
4634                 disable mmi
4635             ;;
4636         esac
4637
4638         case $cpu in
4639             24kc)
4640                 disable mipsfpu
4641                 disable mipsdsp
4642                 disable mipsdspr2
4643             ;;
4644             24kf*)
4645                 disable mipsdsp
4646                 disable mipsdspr2
4647             ;;
4648             24kec|34kc|1004kc)
4649                 disable mipsfpu
4650                 disable mipsdspr2
4651             ;;
4652             24kef*|34kf*|1004kf*)
4653                 disable mipsdspr2
4654             ;;
4655             74kc)
4656                 disable mipsfpu
4657             ;;
4658             p5600)
4659                 enable mips32r5
4660                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4661             ;;
4662             i6400)
4663                 enable mips64r6
4664                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4665             ;;
4666             p6600)
4667                 enable mips64r6
4668                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4669             ;;
4670         esac
4671     else
4672         # We do not disable anything. Is up to the user to disable the unwanted features.
4673         warn 'generic cpu selected'
4674     fi
4675
4676 elif enabled ppc; then
4677
4678     disable ldbrx
4679
4680     case $(tolower $cpu) in
4681         601|ppc601|powerpc601)
4682             cpuflags="-mcpu=601"
4683             disable altivec
4684         ;;
4685         603*|ppc603*|powerpc603*)
4686             cpuflags="-mcpu=603"
4687             disable altivec
4688         ;;
4689         604*|ppc604*|powerpc604*)
4690             cpuflags="-mcpu=604"
4691             disable altivec
4692         ;;
4693         g3|75*|ppc75*|powerpc75*)
4694             cpuflags="-mcpu=750"
4695             disable altivec
4696         ;;
4697         g4|745*|ppc745*|powerpc745*)
4698             cpuflags="-mcpu=7450"
4699             disable vsx
4700         ;;
4701         74*|ppc74*|powerpc74*)
4702             cpuflags="-mcpu=7400"
4703             disable vsx
4704         ;;
4705         g5|970|ppc970|powerpc970)
4706             cpuflags="-mcpu=970"
4707             disable vsx
4708         ;;
4709         power[3-6]*)
4710             cpuflags="-mcpu=$cpu"
4711             disable vsx
4712         ;;
4713         power[7-8]*)
4714             cpuflags="-mcpu=$cpu"
4715         ;;
4716         cell)
4717             cpuflags="-mcpu=cell"
4718             enable ldbrx
4719             disable vsx
4720         ;;
4721         e500mc)
4722             cpuflags="-mcpu=e500mc"
4723             disable altivec
4724         ;;
4725         e500v2)
4726             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4727             disable altivec
4728             disable dcbzl
4729         ;;
4730         e500)
4731             cpuflags="-mcpu=8540 -mhard-float"
4732             disable altivec
4733             disable dcbzl
4734         ;;
4735     esac
4736
4737 elif enabled sparc; then
4738
4739     case $cpu in
4740         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4741             cpuflags="-mcpu=$cpu"
4742         ;;
4743         ultrasparc*|niagara[234])
4744             cpuflags="-mcpu=$cpu"
4745         ;;
4746     esac
4747
4748 elif enabled x86; then
4749
4750     case $cpu in
4751         i[345]86|pentium)
4752             cpuflags="-march=$cpu"
4753             disable i686
4754             disable mmx
4755         ;;
4756         # targets that do NOT support nopl and conditional mov (cmov)
4757         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4758             cpuflags="-march=$cpu"
4759             disable i686
4760         ;;
4761         # targets that do support nopl and conditional mov (cmov)
4762         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4763         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4764         |amdfam10|barcelona|b[dt]ver*|znver*)
4765             cpuflags="-march=$cpu"
4766             enable i686
4767             enable fast_cmov
4768         ;;
4769         # targets that do support conditional mov but on which it's slow
4770         pentium4|pentium4m|prescott|nocona)
4771             cpuflags="-march=$cpu"
4772             enable i686
4773             disable fast_cmov
4774         ;;
4775     esac
4776
4777 fi
4778
4779 if [ "$cpu" != generic ]; then
4780     add_cflags  $cpuflags
4781     add_asflags $cpuflags
4782     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4783 fi
4784
4785 # compiler sanity check
4786 check_exec <<EOF
4787 int main(void){ return 0; }
4788 EOF
4789 if test "$?" != 0; then
4790     echo "$cc is unable to create an executable file."
4791     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4792         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4793         echo "Only do this if you know what cross compiling means."
4794     fi
4795     die "C compiler test failed."
4796 fi
4797
4798 add_cppflags -D_ISOC99_SOURCE
4799 add_cxxflags -D__STDC_CONSTANT_MACROS
4800 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4801
4802 # some compilers silently accept -std=c11, so we also need to check that the
4803 # version macro is defined properly
4804 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4805     add_cflags -std=c11 ||
4806     check_cflags -std=c99
4807
4808 check_cppflags -D_FILE_OFFSET_BITS=64
4809 check_cppflags -D_LARGEFILE_SOURCE
4810
4811 add_host_cppflags -D_ISOC99_SOURCE
4812 check_host_cflags -std=c99
4813 check_host_cflags -Wall
4814 check_host_cflags $host_cflags_speed
4815
4816 check_64bit(){
4817     arch32=$1
4818     arch64=$2
4819     expr=$3
4820     check_code cc "" "int test[2*($expr) - 1]" &&
4821         subarch=$arch64 || subarch=$arch32
4822     enable $subarch
4823 }
4824
4825 case "$arch" in
4826     aarch64|alpha|ia64)
4827         enabled shared && enable_weak pic
4828     ;;
4829     mips)
4830         check_64bit mips mips64 '_MIPS_SIM > 1'
4831         enabled shared && enable_weak pic
4832     ;;
4833     parisc)
4834         check_64bit parisc parisc64 'sizeof(void *) > 4'
4835         enabled shared && enable_weak pic
4836     ;;
4837     ppc)
4838         check_64bit ppc ppc64 'sizeof(void *) > 4'
4839         enabled shared && enable_weak pic
4840     ;;
4841     s390)
4842         check_64bit s390 s390x 'sizeof(void *) > 4'
4843         enabled shared && enable_weak pic
4844     ;;
4845     sparc)
4846         check_64bit sparc sparc64 'sizeof(void *) > 4'
4847         enabled shared && enable_weak pic
4848     ;;
4849     x86)
4850         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4851         # Treat x32 as x64 for now. Note it also needs pic if shared
4852         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4853             subarch=x86_64 && enable x86_64 && disable x86_32
4854         if enabled x86_64; then
4855             enabled shared && enable_weak pic
4856             objformat=elf64
4857         fi
4858     ;;
4859 esac
4860
4861 # OS specific
4862 case $target_os in
4863     aix)
4864         SHFLAGS=-shared
4865         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4866         enabled shared && add_ldflags -Wl,-brtl
4867         arflags='-Xany -r -c'
4868         ;;
4869     android)
4870         disable symver
4871         enable section_data_rel_ro
4872         SLIB_INSTALL_NAME='$(SLIBNAME)'
4873         SLIB_INSTALL_LINKS=
4874         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4875         ;;
4876     haiku)
4877         prefix_default="/boot/common"
4878         network_extralibs="-lnetwork"
4879         host_extralibs=
4880         ;;
4881     sunos)
4882         SHFLAGS='-shared -Wl,-h,$$(@F)'
4883         enabled x86 && append SHFLAGS -mimpure-text
4884         network_extralibs="-lsocket -lnsl"
4885         add_cppflags -D__EXTENSIONS__
4886         # When using suncc to build, the Solaris linker will mark
4887         # an executable with each instruction set encountered by
4888         # the Solaris assembler.  As our libraries contain their own
4889         # guards for processor-specific code, instead suppress
4890         # generation of the HWCAPS ELF section on Solaris x86 only.
4891         enabled_all suncc x86 &&
4892             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4893             add_ldflags -Wl,-M,mapfile
4894         nm_default='nm -P -g'
4895         version_script='-M'
4896         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4897         ;;
4898     netbsd)
4899         disable symver
4900         oss_indev_extralibs="-lossaudio"
4901         oss_outdev_extralibs="-lossaudio"
4902         enabled gcc || check_ldflags -Wl,-zmuldefs
4903         ;;
4904     openbsd|bitrig)
4905         disable symver
4906         SHFLAGS='-shared'
4907         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4908         SLIB_INSTALL_LINKS=
4909         oss_indev_extralibs="-lossaudio"
4910         oss_outdev_extralibs="-lossaudio"
4911         ;;
4912     dragonfly)
4913         disable symver
4914         ;;
4915     freebsd)
4916         ;;
4917     bsd/os)
4918         add_extralibs -lpoll -lgnugetopt
4919         strip="strip -d"
4920         ;;
4921     darwin)
4922         enabled ppc && add_asflags -force_cpusubtype_ALL
4923         install_name_dir_default='$(SHLIBDIR)'
4924         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4925         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4926         strip="${strip} -x"
4927         add_ldflags -Wl,-dynamic,-search_paths_first
4928         check_cflags -Werror=partial-availability
4929         SLIBSUF=".dylib"
4930         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4931         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4932         enabled x86_64 && objformat="macho64" || objformat="macho32"
4933         enabled_any pic shared x86_64 ||
4934             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4935         check_header dispatch/dispatch.h &&
4936             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4937         if test -n "$sysroot"; then
4938             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
4939             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
4940         fi
4941         version_script='-exported_symbols_list'
4942         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4943         ;;
4944     msys*)
4945         die "Native MSYS builds are discouraged, please use the MINGW environment."
4946         ;;
4947     mingw32*|mingw64*)
4948         target_os=mingw32
4949         if enabled shared; then
4950             # Cannot build both shared and static libs when using dllimport.
4951             disable static
4952         fi
4953         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4954         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4955         shlibdir_default="$bindir_default"
4956         SLIBPREF=""
4957         SLIBSUF=".dll"
4958         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4959         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4960         SLIB_EXTRA_CMD='cp $(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4961         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4962         SLIB_INSTALL_LINKS=
4963         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4964         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4965         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4966         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
4967         enabled x86_64 && objformat="win64" || objformat="win32"
4968         ranlib=:
4969         enable dos_paths
4970         check_ldflags -Wl,--nxcompat,--dynamicbase
4971         # Lets work around some stupidity in binutils.
4972         # ld will strip relocations from executables even though we need them
4973         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4974         # however ld then forgets what the entry point should be (oops) so we
4975         # have to manually (re)set it.
4976         if enabled x86_32; then
4977             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4978         elif enabled x86_64; then
4979             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4980             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4981             # Set image base >4GB for extra entropy with HEASLR
4982             add_ldexeflags -Wl,--image-base,0x140000000
4983             append SHFLAGS -Wl,--image-base,0x180000000
4984         fi
4985         ;;
4986     win32|win64)
4987         disable symver
4988         if enabled shared; then
4989             # Link to the import library instead of the normal static library
4990             # for shared libs.
4991             LD_LIB='%.lib'
4992             # Cannot build both shared and static libs with MSVC or icl.
4993             disable static
4994         fi
4995         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4996         shlibdir_default="$bindir_default"
4997         SLIBPREF=""
4998         SLIBSUF=".dll"
4999         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5000         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5001         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5002         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5003         SLIB_INSTALL_LINKS=
5004         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5005         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5006         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5007         enabled x86_64 && objformat="win64" || objformat="win32"
5008         ranlib=:
5009         enable dos_paths
5010         ;;
5011     cygwin*)
5012         target_os=cygwin
5013         shlibdir_default="$bindir_default"
5014         SLIBPREF="cyg"
5015         SLIBSUF=".dll"
5016         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5017         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5018         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5019         SLIB_INSTALL_LINKS=
5020         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5021         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5022         enabled x86_64 && objformat="win64" || objformat="win32"
5023         enable dos_paths
5024         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5025         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5026         ;;
5027     *-dos|freedos|opendos)
5028         network_extralibs="-lsocket"
5029         objformat="coff"
5030         enable dos_paths
5031         add_cppflags -U__STRICT_ANSI__
5032         ;;
5033     linux)
5034         enable section_data_rel_ro
5035         enabled_any arm aarch64 && enable_weak linux_perf
5036         ;;
5037     irix*)
5038         target_os=irix
5039         ranlib="echo ignoring ranlib"
5040         ;;
5041     os/2*)
5042         strip="lxlite -CS"
5043         striptype=""
5044         objformat="aout"
5045         add_cppflags -D_GNU_SOURCE
5046         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5047         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5048         LIBSUF="_s.a"
5049         SLIBPREF=""
5050         SLIBSUF=".dll"
5051         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5052         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5053         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5054             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5055             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5056             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5057             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5058         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5059             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5060         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5061         SLIB_INSTALL_LINKS=
5062         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5063         enable dos_paths
5064         enable_weak os2threads
5065         ;;
5066     gnu/kfreebsd)
5067         add_cppflags -D_BSD_SOURCE
5068         ;;
5069     gnu)
5070         ;;
5071     qnx)
5072         add_cppflags -D_QNX_SOURCE
5073         network_extralibs="-lsocket"
5074         ;;
5075     symbian)
5076         SLIBSUF=".dll"
5077         enable dos_paths
5078         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5079         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5080         add_ldflags -Wl,--target1-abs,--no-undefined \
5081                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5082                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5083         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5084                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5085                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5086         ;;
5087     minix)
5088         ;;
5089     none)
5090         ;;
5091     *)
5092         die "Unknown OS '$target_os'."
5093         ;;
5094 esac
5095
5096 # test if creating links works
5097 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5098 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5099 mkdir "$link_dest"
5100 $ln_s "$link_dest" "$link_name"
5101 touch "$link_dest/test_file"
5102 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5103     # create link to source path
5104     [ -e src ] && rm src
5105     $ln_s "$source_path" src
5106     source_link=src
5107 else
5108     # creating directory links doesn't work
5109     # fall back to using the full source path
5110     source_link="$source_path"
5111 fi
5112 # cleanup
5113 rm -r "$link_dest"
5114 rm -r "$link_name"
5115
5116 # determine libc flavour
5117
5118 probe_libc(){
5119     pfx=$1
5120     pfx_no_=${pfx%_}
5121     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5122     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5123         eval ${pfx}libc_type=uclibc
5124         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5125     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5126         eval ${pfx}libc_type=glibc
5127         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5128     # MinGW headers can be installed on Cygwin, so check for newlib first.
5129     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5130         eval ${pfx}libc_type=newlib
5131         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5132     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5133     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5134         eval ${pfx}libc_type=mingw64
5135         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5136             add_compat msvcrt/snprintf.o
5137             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5138         fi
5139         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5140         eval test \$${pfx_no_}cc_type = "gcc" &&
5141             add_${pfx}cppflags -D__printf__=__gnu_printf__
5142     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5143          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5144         eval ${pfx}libc_type=mingw32
5145         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5146             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5147             die "ERROR: MinGW32 runtime version must be >= 3.15."
5148         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5149         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5150             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5151         check_${pfx}cpp_condition windows.h "defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0502" &&
5152             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5153         eval test \$${pfx_no_}cc_type = "gcc" &&
5154             add_${pfx}cppflags -D__printf__=__gnu_printf__
5155     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5156         eval ${pfx}libc_type=msvcrt
5157         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5158             if [ "$pfx" = host_ ]; then
5159                 add_host_cppflags -Dsnprintf=_snprintf
5160             else
5161                 add_compat strtod.o strtod=avpriv_strtod
5162                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5163                                              _snprintf=avpriv_snprintf  \
5164                                              vsnprintf=avpriv_vsnprintf
5165             fi
5166         fi
5167         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5168         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5169         # 0x601 by default unless something else is set by the user.
5170         # This can easily lead to us detecting functions only present
5171         # in such new versions and producing binaries requiring windows 7.0.
5172         # Therefore explicitly set the default to XP unless the user has
5173         # set something else on the command line.
5174         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5175         # family. For these cases, configure is free to use any functions
5176         # found in the SDK headers by default. (Alternatively, we could force
5177         # _WIN32_WINNT to 0x0602 in that case.)
5178         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5179             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5180 #ifdef WINAPI_FAMILY
5181 #include <winapifamily.h>
5182 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5183 #error not desktop
5184 #endif
5185 #endif
5186 EOF
5187         if [ "$pfx" = "" ]; then
5188             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5189             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5190         fi
5191     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5192         eval ${pfx}libc_type=klibc
5193     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5194         eval ${pfx}libc_type=bionic
5195     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5196         eval ${pfx}libc_type=solaris
5197         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5198     fi
5199     check_${pfx}cc <<EOF
5200 #include <time.h>
5201 void *v = localtime_r;
5202 EOF
5203 test "$?" != 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
5204 #include <time.h>
5205 void *v = localtime_r;
5206 EOF
5207
5208     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5209 }
5210
5211 probe_libc
5212 probe_libc host_
5213
5214 # hacks for compiler/libc/os combinations
5215
5216 case $libc_type in
5217     bionic)
5218         add_compat strtod.o strtod=avpriv_strtod
5219         ;;
5220 esac
5221
5222 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5223     add_cppflags '-I\$(SRC_PATH)/compat/float'
5224
5225 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5226
5227 set_default libdir
5228 : ${shlibdir_default:="$libdir"}
5229 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5230
5231 set_default $PATHS_LIST
5232 set_default nm
5233
5234 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5235
5236 enable_weak_pic() {
5237     disabled pic && return
5238     enable pic
5239     add_cppflags -DPIC
5240     case "$target_os" in
5241     mingw*|cygwin*|win*)
5242         ;;
5243     *)
5244         add_cflags -fPIC
5245         add_asflags -fPIC
5246         ;;
5247     esac
5248 }
5249
5250 enabled pic && enable_weak_pic
5251
5252 check_cc <<EOF || die "Symbol mangling check failed."
5253 int ff_extern;
5254 EOF
5255 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5256 extern_prefix=${sym%%ff_extern*}
5257
5258 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5259
5260 _restrict=
5261 for restrict_keyword in restrict __restrict__ __restrict; do
5262     check_cc <<EOF && _restrict=$restrict_keyword && break
5263 void foo(char * $restrict_keyword p);
5264 EOF
5265 done
5266
5267 check_cc <<EOF && enable pragma_deprecated
5268 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5269 EOF
5270
5271 check_cc <<EOF || die "endian test failed"
5272 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5273 EOF
5274 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5275
5276 check_cc <<EOF && enable const_nan
5277 #include <math.h>
5278 void foo(void) { struct { double d; } static const bar[] = { { NAN } }; }
5279 EOF
5280
5281 if ! enabled ppc64 || enabled bigendian; then
5282     disable vsx
5283 fi
5284
5285 check_gas() {
5286     log "check_gas using '$as' as AS"
5287     # :vararg is used on aarch64, arm and ppc altivec
5288     check_as <<EOF || return 1
5289 .macro m n, y:vararg=0
5290 \n: .int \y
5291 .endm
5292 m x
5293 EOF
5294     # .altmacro is only used in arm asm
5295     ! enabled arm || check_as <<EOF || return 1
5296 .altmacro
5297 EOF
5298     enable gnu_as
5299     return 0
5300 }
5301
5302 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5303     nogas=:
5304     enabled_any arm aarch64 && nogas=die
5305     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5306     as_noop=-v
5307
5308     case $as_type in
5309         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5310         gcc)  gaspp_as_type=gas ;;
5311         *)    gaspp_as_type=$as_type ;;
5312     esac
5313
5314     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5315
5316     test "${as#*gas-preprocessor.pl}" != "$as" ||
5317     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5318         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5319
5320     if ! check_gas ; then
5321         as=${gas:=$as}
5322         check_gas || \
5323             $nogas "GNU assembler not found, install/update gas-preprocessor"
5324     fi
5325
5326     check_as <<EOF && enable as_func
5327 .func test
5328 .endfunc
5329 EOF
5330 fi
5331
5332 check_inline_asm inline_asm_labels '"1:\n"'
5333
5334 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5335
5336 if enabled aarch64; then
5337     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5338     # internal assembler in clang 3.3 does not support this instruction
5339     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5340     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5341
5342     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5343
5344 elif enabled alpha; then
5345
5346     check_cflags -mieee
5347
5348 elif enabled arm; then
5349
5350     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5351
5352     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5353 float func(float a, float b){ return a+b; }
5354 EOF
5355
5356     enabled thumb && check_cflags -mthumb || check_cflags -marm
5357
5358     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5359         enable vfp_args
5360     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5361         enable vfp_args
5362     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5363         case "${cross_prefix:-$cc}" in
5364             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5365             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5366 __asm__ (".eabi_attribute 28, 1");
5367 int main(void) { return 0; }
5368 EOF
5369         esac
5370         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5371     fi
5372
5373     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5374     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5375     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5376     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5377     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5378     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5379     enabled setend  && check_insn setend  'setend be'
5380
5381     [ $target_os = linux ] || [ $target_os = android ] ||
5382         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5383             $ARCH_EXT_LIST_ARM
5384
5385     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5386
5387     check_as <<EOF && enable as_arch_directive
5388 .arch armv7-a
5389 EOF
5390     check_as <<EOF && enable as_fpu_directive
5391 .fpu neon
5392 EOF
5393
5394     # llvm's integrated assembler supports .object_arch from llvm 3.5
5395     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5396         check_as <<EOF && enable as_object_arch
5397 .object_arch armv4
5398 EOF
5399
5400     # MS armasm fails to assemble our PIC constructs
5401     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5402
5403 elif enabled mips; then
5404
5405     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5406     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5407     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5408
5409     # Enable minimum ISA based on selected options
5410     if enabled mips64; then
5411         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5412         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5413         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5414     else
5415         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5416         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5417         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5418         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5419     fi
5420
5421     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5422     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5423     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5424     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5425     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5426
5427     if enabled bigendian && enabled msa; then
5428         disable msa
5429     fi
5430
5431 elif enabled parisc; then
5432
5433     if enabled gcc; then
5434         case $($cc -dumpversion) in
5435             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5436         esac
5437     fi
5438
5439 elif enabled ppc; then
5440
5441     enable local_aligned
5442
5443     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5444     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5445     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5446     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5447
5448     if enabled altivec; then
5449         check_cflags -maltivec -mabi=altivec
5450
5451         # check if our compiler supports Motorola AltiVec C API
5452         check_code cc altivec.h "vector signed int v1 = (vector signed int) { 0 };
5453                                  vector signed int v2 = (vector signed int) { 1 };
5454                                  v1 = vec_add(v1, v2);" ||
5455             disable altivec
5456
5457         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5458     fi
5459
5460     if enabled vsx; then
5461         check_cflags -mvsx &&
5462         check_code cc altivec.h "int v[4] = { 0 };
5463                                  vector signed int v1 = vec_vsx_ld(0, v);" ||
5464             disable vsx
5465     fi
5466
5467     if enabled power8; then
5468         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5469     fi
5470
5471 elif enabled x86; then
5472
5473     check_builtin rdtsc    intrin.h   "__rdtsc()"
5474     check_builtin mm_empty mmintrin.h "_mm_empty()"
5475
5476     enable local_aligned
5477
5478     # check whether EBP is available on x86
5479     # As 'i' is stored on the stack, this program will crash
5480     # if the base pointer is used to access it because the
5481     # base pointer is cleared in the inline assembly code.
5482     check_exec_crash <<EOF && enable ebp_available
5483 volatile int i=0;
5484 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5485 return i;
5486 EOF
5487
5488     # check whether EBX is available on x86
5489     check_inline_asm ebx_available '""::"b"(0)' &&
5490         check_inline_asm ebx_available '"":::"%ebx"'
5491
5492     # check whether xmm clobbers are supported
5493     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5494
5495     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5496         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5497
5498     # check whether binutils is new enough to compile SSSE3/MMXEXT
5499     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5500     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5501
5502     probe_x86asm(){
5503         x86asmexe_probe=$1
5504         if check_cmd $x86asmexe_probe -v; then
5505             x86asmexe=$x86asmexe_probe
5506             x86asm_type=nasm
5507             x86asm_debug="-g -F dwarf"
5508             X86ASMDEP=
5509             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5510         elif check_cmd $x86asmexe_probe --version; then
5511             x86asmexe=$x86asmexe_probe
5512             x86asm_type=yasm
5513             x86asm_debug="-g dwarf2"
5514             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5515             X86ASM_DEPFLAGS=
5516         fi
5517         check_x86asm "movbe ecx, [5]" && enable x86asm
5518     }
5519
5520     if ! disabled_any asm mmx x86asm; then
5521         disable x86asm
5522         for program in $x86asmexe nasm yasm; do
5523             probe_x86asm $program && break
5524         done
5525         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5526         X86ASMFLAGS="-f $objformat"
5527         enabled pic               && append X86ASMFLAGS "-DPIC"
5528         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5529         case "$objformat" in
5530             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5531         esac
5532
5533         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5534         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5535         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5536         check_x86asm "CPU amdnop" || disable cpunop
5537     fi
5538
5539     case "$cpu" in
5540         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5541             disable fast_clz
5542         ;;
5543     esac
5544
5545 fi
5546
5547 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5548
5549 check_ldflags -Wl,--as-needed
5550 check_ldflags -Wl,-z,noexecstack
5551
5552 if ! disabled network; then
5553     check_func getaddrinfo $network_extralibs
5554     check_func inet_aton $network_extralibs
5555
5556     check_type netdb.h "struct addrinfo"
5557     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5558     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5559     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5560     check_type poll.h "struct pollfd"
5561     check_type netinet/sctp.h "struct sctp_event_subscribe"
5562     check_struct "sys/socket.h" "struct msghdr" msg_flags
5563     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5564     check_type netinet/in.h "struct sockaddr_in6"
5565     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5566     check_type "sys/types.h sys/socket.h" socklen_t
5567
5568     # Prefer arpa/inet.h over winsock2
5569     if check_header arpa/inet.h ; then
5570         check_func closesocket
5571     elif check_header winsock2.h ; then
5572         check_func_headers winsock2.h closesocket -lws2 &&
5573             network_extralibs="-lws2" ||
5574         { check_func_headers winsock2.h closesocket -lws2_32 &&
5575             network_extralibs="-lws2_32"; } || disable winsock2_h network
5576         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5577
5578         check_type ws2tcpip.h socklen_t
5579         check_type ws2tcpip.h "struct addrinfo"
5580         check_type ws2tcpip.h "struct group_source_req"
5581         check_type ws2tcpip.h "struct ip_mreq_source"
5582         check_type ws2tcpip.h "struct ipv6_mreq"
5583         check_type winsock2.h "struct pollfd"
5584         check_struct winsock2.h "struct sockaddr" sa_len
5585         check_type ws2tcpip.h "struct sockaddr_in6"
5586         check_type ws2tcpip.h "struct sockaddr_storage"
5587     else
5588         disable network
5589     fi
5590 fi
5591
5592 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5593 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5594 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5595 check_builtin sarestart signal.h "SA_RESTART"
5596 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5597 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5598 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5599 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5600
5601 case "$custom_allocator" in
5602     jemalloc)
5603         # jemalloc by default does not use a prefix
5604         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5605     ;;
5606     tcmalloc)
5607         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5608         malloc_prefix=tc_
5609     ;;
5610 esac
5611
5612 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5613 check_func  ${malloc_prefix}memalign            && enable memalign
5614 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5615
5616 check_func  access
5617 check_func_headers stdlib.h arc4random
5618 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5619 check_func  fcntl
5620 check_func  fork
5621 check_func  gethrtime
5622 check_func  getopt
5623 check_func  getrusage
5624 check_func  gettimeofday
5625 check_func  isatty
5626 check_func  mkstemp
5627 check_func  mmap
5628 check_func  mprotect
5629 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5630 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5631 check_func  sched_getaffinity
5632 check_func  setrlimit
5633 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5634 check_func  strerror_r
5635 check_func  sysconf
5636 check_func  sysctl
5637 check_func  usleep
5638
5639 check_func_headers conio.h kbhit
5640 check_func_headers io.h setmode
5641 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5642 check_func_headers mach/mach_time.h mach_absolute_time
5643 check_func_headers stdlib.h getenv
5644 check_func_headers sys/stat.h lstat
5645
5646 check_func_headers windows.h GetProcessAffinityMask
5647 check_func_headers windows.h GetProcessTimes
5648 check_func_headers windows.h GetSystemTimeAsFileTime
5649 check_func_headers windows.h LoadLibrary
5650 check_func_headers windows.h MapViewOfFile
5651 check_func_headers windows.h PeekNamedPipe
5652 check_func_headers windows.h SetConsoleTextAttribute
5653 check_func_headers windows.h SetConsoleCtrlHandler
5654 check_func_headers windows.h Sleep
5655 check_func_headers windows.h VirtualAlloc
5656 check_struct windows.h "CONDITION_VARIABLE" Ptr
5657 check_func_headers glob.h glob
5658 enabled xlib &&
5659     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5660
5661 check_header direct.h
5662 check_header dirent.h
5663 check_header dxgidebug.h
5664 check_header dxva.h
5665 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5666 check_header io.h
5667 check_header libcrystalhd/libcrystalhd_if.h
5668 check_header malloc.h
5669 check_header net/udplite.h
5670 check_header poll.h
5671 check_header sys/param.h
5672 check_header sys/resource.h
5673 check_header sys/select.h
5674 check_header sys/time.h
5675 check_header sys/un.h
5676 check_header termios.h
5677 check_header unistd.h
5678 check_header valgrind/valgrind.h
5679 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5680 check_header windows.h
5681 check_header X11/extensions/XvMClib.h
5682 check_header asm/types.h
5683
5684 # it seems there are versions of clang in some distros that try to use the
5685 # gcc headers, which explodes for stdatomic
5686 # so we also check that atomics actually work here
5687 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5688
5689 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5690 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5691 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5692 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5693 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5694
5695 enabled appkit       && check_apple_framework AppKit
5696 enabled audiotoolbox && check_apple_framework AudioToolbox
5697 enabled avfoundation && check_apple_framework AVFoundation
5698 enabled coreimage    && check_apple_framework CoreImage
5699 enabled videotoolbox && check_apple_framework VideoToolbox
5700
5701 check_apple_framework CoreFoundation
5702 check_apple_framework CoreMedia
5703 check_apple_framework CoreVideo
5704
5705 enabled avfoundation && {
5706     disable coregraphics applicationservices
5707     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5708     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5709
5710 enabled videotoolbox && {
5711     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5712     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5713 }
5714
5715 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5716
5717 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5718 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5719 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5720 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5721 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5722
5723 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5724 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
5725 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5726 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5727 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5728 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5729 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5730 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5731 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5732 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5733
5734 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5735
5736 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5737
5738 if ! disabled w32threads && ! enabled pthreads; then
5739     check_func_headers "windows.h process.h" _beginthreadex &&
5740         enable w32threads || disable w32threads
5741     if ! enabled w32threads && enabled winrt; then
5742         check_func_headers "windows.h" CreateThread &&
5743             enable w32threads || disable w32threads
5744     fi
5745 fi
5746
5747 # check for some common methods of building with pthread support
5748 # do this before the optional library checks as some of them require pthreads
5749 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5750     if check_lib pthreads pthread.h pthread_join   -pthread &&
5751        check_lib pthreads pthread.h pthread_create -pthread; then
5752         add_cflags -pthread
5753     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5754          check_lib pthreads pthread.h pthread_create -pthreads; then
5755         add_cflags -pthreads
5756     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5757          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5758         add_cflags -ldl -pthread
5759     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5760          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5761         :
5762     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5763          check_lib pthreads pthread.h pthread_create -lpthread; then
5764         :
5765     elif check_func pthread_join && check_func pthread_create; then
5766         enable pthreads
5767     fi
5768     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5769
5770     if enabled pthreads; then
5771         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
5772         check_func pthread_cancel $pthreads_extralibs
5773     fi
5774 fi
5775
5776 enabled  zlib && check_lib zlib   zlib.h      zlibVersion    -lz
5777 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5778 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5779
5780 # On some systems dynamic loading requires no extra linker flags
5781 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
5782
5783 check_lib libm math.h sin -lm
5784
5785 atan2f_args=2
5786 copysign_args=2
5787 hypot_args=2
5788 ldexpf_args=2
5789 powf_args=2
5790
5791 for func in $MATH_FUNCS; do
5792     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
5793 done
5794
5795 for func in $COMPLEX_FUNCS; do
5796     eval check_complexfunc $func \${${func}_args:-1}
5797 done
5798
5799 # these are off by default, so fail if requested and not available
5800 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5801 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5802 enabled decklink          && { require_header DeckLinkAPI.h &&
5803                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5804 enabled libndi_newtek     && require_header Processing.NDI.Lib.h
5805 enabled frei0r            && require_header frei0r.h
5806 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5807 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
5808 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5809 enabled ladspa            && require_header ladspa.h
5810 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv-0/lilv/lilv.h" lilv_world_new
5811 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5812 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
5813 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
5814 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
5815 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5816                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5817                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5818 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
5819 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
5820 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
5821 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5822                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5823                                  warn "using libfdk without pkg-config"; } }
5824 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"
5825 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5826 enabled fontconfig        && enable libfontconfig
5827 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
5828 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5829 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
5830 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
5831                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
5832 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5833                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5834                                done || die "ERROR: libgsm not found"; }
5835 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
5836 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5837 # While it may appear that require is being used as a pkg-config
5838 # fallback for libmfx, it is actually being used to detect a different
5839 # installation route altogether.  If libmfx is installed via the Intel
5840 # Media SDK or Intel Media Server Studio, these don't come with
5841 # pkg-config support.  Instead, users should make sure that the build
5842 # can find the libraries and headers through other means.
5843 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
5844                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
5845 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
5846 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5847 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa $zlib_extralibs
5848 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
5849                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
5850                                die "ERROR: libnpp not found"; }
5851 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5852 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5853 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5854                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
5855                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5856                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
5857 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
5858 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
5859                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
5860 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
5861 enabled libopus           && {
5862     enabled libopus_decoder && {
5863         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
5864     }
5865     enabled libopus_encoder && {
5866         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
5867     }
5868 }
5869 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
5870 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
5871 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
5872 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
5873 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
5874 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
5875                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
5876 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
5877 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
5878 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
5879 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
5880 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
5881 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5882 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5883                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5884                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5885 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
5886 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5887 enabled libvmaf           && require_pkg_config libvmaf libvmaf libvmaf.h compute_vmaf
5888 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5889 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
5890                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
5891
5892 enabled libvpx            && {
5893     enabled libvpx_vp8_decoder && {
5894         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5895             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_dec_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
5896                 die "ERROR: libvpx decoder version must be >=1.4.0";
5897     }
5898     enabled libvpx_vp8_encoder && {
5899         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5900             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
5901                 die "ERROR: libvpx encoder version must be >=1.4.0";
5902     }
5903     enabled libvpx_vp9_decoder && {
5904         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5905             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" -lvpx
5906     }
5907     enabled libvpx_vp9_encoder && {
5908         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5909             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" -lvpx
5910     }
5911     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5912         die "libvpx enabled but no supported decoders found"
5913     fi
5914 }
5915
5916 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5917 enabled libwebp           && {
5918     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5919     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
5920 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
5921                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
5922                                  warn "using libx264 without pkg-config"; } } &&
5923                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
5924                              { check_cpp_condition x264.h "X264_MPEG2" &&
5925                                enable libx262; }
5926 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
5927                              require_cpp_condition x265.h "X265_BUILD >= 68"
5928 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
5929 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5930 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.3.0" zimg.h zimg_get_api_version
5931 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
5932 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
5933                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5934                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5935 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
5936 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5937 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5938                                { ! enabled cross_compile &&
5939                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
5940                                  add_ldflags -L/opt/vc/lib/ &&
5941                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
5942                                die "ERROR: mmal not found" &&
5943                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
5944 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5945                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
5946                                die "ERROR: openal not found"; } &&
5947                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5948                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5949 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5950                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5951                                die "ERROR: opencl not found"; } &&
5952                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5953                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5954                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5955 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
5956                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5957                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5958                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5959                                die "ERROR: opengl not found."
5960                              }
5961 enabled omx               && require_header OMX_Core.h
5962 enabled omx_rpi           && { check_header OMX_Core.h ||
5963                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
5964                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
5965 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
5966                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
5967                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5968                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5969                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5970                                die "ERROR: openssl not found"; }
5971 enabled rkmpp             && { { require_pkg_config rkmpp rockchip_mpp rockchip/rk_mpi.h mpp_create ||
5972                                  die "ERROR : Rockchip MPP was not found."; } &&
5973                                { check_func_headers rockchip/rk_mpi_cmd.h "MPP_DEC_GET_FREE_PACKET_SLOT_COUNT" ||
5974                                  die "ERROR: Rockchip MPP is outdated, please get a more recent one."; } &&
5975                                { enabled libdrm ||
5976                                  die "ERROR: rkmpp requires --enable-libdrm"; }
5977                              }
5978
5979 if enabled gcrypt; then
5980     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5981     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5982         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5983         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
5984         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
5985             die "ERROR: gcrypt not found"
5986         add_cflags $gcrypt_cflags
5987     else
5988         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5989     fi
5990 fi
5991
5992 if enabled sdl2; then
5993     SDL2_CONFIG="${cross_prefix}sdl2-config"
5994     if test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent; then
5995         check_func SDL_Init $sdl2_extralibs $sdl2_cflags ||
5996             disable sdl2
5997     elif "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
5998         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
5999         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6000         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6001         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6002         check_func SDL_Init $sdl2_extralibs $sdl2_cflags &&
6003             enable sdl2
6004     fi
6005     if test $target_os = "mingw32"; then
6006         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6007     fi
6008 fi
6009
6010 if enabled decklink; then
6011     case $target_os in
6012         mingw32*|mingw64*|win32|win64)
6013             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6014             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6015             ;;
6016     esac
6017 fi
6018
6019 enabled securetransport &&
6020     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6021     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6022         disable securetransport
6023
6024 enabled securetransport &&
6025     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6026
6027 enabled schannel &&
6028     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6029     check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6030     schannel_extralibs="-lsecur32" ||
6031         disable schannel
6032
6033 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6034 enabled makeinfo \
6035     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6036     && enable makeinfo_html || disable makeinfo_html
6037 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6038 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6039 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6040 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6041
6042 # check V4L2 codecs available in the API
6043 check_header linux/fb.h
6044 check_header linux/videodev2.h
6045 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6046 check_code cc linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;" || disable v4l2_m2m
6047 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;" && enable vc1_v4l2_m2m
6048 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;" && enable mpeg1_v4l2_m2m
6049 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;" && enable mpeg2_v4l2_m2m
6050 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;" && enable mpeg4_v4l2_m2m
6051 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;" && enable hevc_v4l2_m2m
6052 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H263;" && enable h263_v4l2_m2m
6053 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H264;" && enable h264_v4l2_m2m
6054 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;" && enable vp8_v4l2_m2m
6055 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;" && enable vp9_v4l2_m2m
6056
6057 check_header sys/videoio.h
6058 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6059
6060 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6061 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6062 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6063 # w32api 3.12 had it defined wrong
6064 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6065
6066 check_type "dshow.h" IBaseFilter
6067
6068 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6069 check_header "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6070     check_header "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6071     check_header "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6072     check_header "dev/ic/bt8xx.h"
6073
6074 if check_struct sys/soundcard.h audio_buf_info bytes; then
6075     enable_sanitized sys/soundcard.h
6076 else
6077     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6078     #include <sys/soundcard.h>
6079     audio_buf_info abc;
6080 EOF
6081 fi
6082
6083 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6084     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6085
6086 enabled libjack &&
6087     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6088
6089 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6090
6091 if enabled libcdio; then
6092     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6093     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6094     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6095     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6096     die "ERROR: No usable libcdio/cdparanoia found"
6097 fi
6098
6099 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6100     disable libxcb_shm libxcb_shape libxcb_xfixes
6101
6102 if enabled libxcb; then
6103     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6104     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6105     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6106 fi
6107
6108 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6109
6110 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6111 # the desktop api partition
6112 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6113 #ifdef WINAPI_FAMILY
6114 #include <winapifamily.h>
6115 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6116 #error desktop, not uwp
6117 #else
6118 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6119 #endif
6120 #else
6121 #error no family set
6122 #endif
6123 EOF
6124
6125 enabled vaapi &&
6126     check_lib vaapi va/va.h vaInitialize -lva
6127
6128 enabled vaapi &&
6129     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6130     disable vaapi
6131
6132 enabled vaapi &&
6133     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6134
6135 enabled vaapi &&
6136     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6137
6138 enabled vaapi &&
6139     check_cpp_condition "va/va.h" "VA_CHECK_VERSION(1, 0, 0)" &&
6140     enable vaapi_1
6141
6142 if enabled_all opencl vaapi ; then
6143     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6144         enable opencl_vaapi_beignet
6145     if enabled libmfx ; then
6146         check_type "CL/cl.h CL/va_ext.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6147             enable opencl_vaapi_intel_media
6148     fi
6149 fi
6150
6151 if enabled_all opencl dxva2 ; then
6152     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6153         enable opencl_dxva2
6154 fi
6155
6156 if enabled_all opencl d3d11va ; then
6157     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6158         enable opencl_d3d11
6159 fi
6160
6161 if enabled_all opencl libdrm ; then
6162     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6163         enable opencl_drm_arm
6164 fi
6165
6166 enabled vdpau &&
6167     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6168     disable vdpau
6169
6170 enabled vdpau &&
6171     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6172
6173 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6174
6175 if enabled x86; then
6176     case $target_os in
6177         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6178             ;;
6179         *)
6180             disable cuda cuvid nvdec nvenc
6181             ;;
6182     esac
6183 else
6184     disable cuda cuvid nvdec nvenc
6185 fi
6186
6187 enabled nvenc &&
6188     check_cc -I$source_path <<EOF || disable nvenc
6189 #include "compat/nvenc/nvEncodeAPI.h"
6190 NV_ENCODE_API_FUNCTION_LIST flist;
6191 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6192 int main(void) { return 0; }
6193 EOF
6194
6195 # Funny iconv installations are not unusual, so check it after all flags have been set
6196 if enabled libc_iconv; then
6197     check_func_headers iconv.h iconv
6198 elif enabled iconv; then
6199     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6200 fi
6201
6202 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6203
6204 # add some useful compiler flags if supported
6205 check_cflags -Wdeclaration-after-statement
6206 check_cflags -Wall
6207 check_cflags -Wdisabled-optimization
6208 check_cflags -Wpointer-arith
6209 check_cflags -Wredundant-decls
6210 check_cflags -Wwrite-strings
6211 check_cflags -Wtype-limits
6212 check_cflags -Wundef
6213 check_cflags -Wmissing-prototypes
6214 check_cflags -Wno-pointer-to-int-cast
6215 check_cflags -Wstrict-prototypes
6216 check_cflags -Wempty-body
6217
6218 if enabled extra_warnings; then
6219     check_cflags -Wcast-qual
6220     check_cflags -Wextra
6221     check_cflags -Wpedantic
6222 fi
6223
6224 check_disable_warning(){
6225     warning_flag=-W${1#-Wno-}
6226     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6227 }
6228
6229 test_cflags -Werror=unused-command-line-argument &&
6230     append unknown_warning_flags "-Werror=unused-command-line-argument"
6231 test_cflags -Werror=unknown-warning-option &&
6232     append unknown_warning_flags "-Werror=unknown-warning-option"
6233
6234 check_disable_warning -Wno-parentheses
6235 check_disable_warning -Wno-switch
6236 check_disable_warning -Wno-format-zero-length
6237 check_disable_warning -Wno-pointer-sign
6238 check_disable_warning -Wno-unused-const-variable
6239 check_disable_warning -Wno-bool-operation
6240
6241 check_disable_warning_headers(){
6242     warning_flag=-W${1#-Wno-}
6243     test_cflags $warning_flag && add_cflags_headers $1
6244 }
6245
6246 check_disable_warning_headers -Wno-deprecated-declarations
6247 check_disable_warning_headers -Wno-unused-variable
6248
6249 check_cc <<EOF && enable blocks_extension
6250 void (^block)(void);
6251 EOF
6252
6253 # add some linker flags
6254 check_ldflags -Wl,--warn-common
6255 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6256 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6257 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6258
6259 # add some strip flags
6260 check_stripflags -x
6261
6262 enabled neon_clobber_test &&
6263     check_ldflags -Wl,--wrap,avcodec_open2              \
6264                   -Wl,--wrap,avcodec_decode_audio4      \
6265                   -Wl,--wrap,avcodec_decode_video2      \
6266                   -Wl,--wrap,avcodec_decode_subtitle2   \
6267                   -Wl,--wrap,avcodec_encode_audio2      \
6268                   -Wl,--wrap,avcodec_encode_video2      \
6269                   -Wl,--wrap,avcodec_encode_subtitle    \
6270                   -Wl,--wrap,avcodec_send_packet        \
6271                   -Wl,--wrap,avcodec_receive_packet     \
6272                   -Wl,--wrap,avcodec_send_frame         \
6273                   -Wl,--wrap,avcodec_receive_frame      \
6274                   -Wl,--wrap,swr_convert                \
6275                   -Wl,--wrap,avresample_convert ||
6276     disable neon_clobber_test
6277
6278 enabled xmm_clobber_test &&
6279     check_ldflags -Wl,--wrap,avcodec_open2              \
6280                   -Wl,--wrap,avcodec_decode_audio4      \
6281                   -Wl,--wrap,avcodec_decode_video2      \
6282                   -Wl,--wrap,avcodec_decode_subtitle2   \
6283                   -Wl,--wrap,avcodec_encode_audio2      \
6284                   -Wl,--wrap,avcodec_encode_video2      \
6285                   -Wl,--wrap,avcodec_encode_subtitle    \
6286                   -Wl,--wrap,avcodec_send_packet        \
6287                   -Wl,--wrap,avcodec_receive_packet     \
6288                   -Wl,--wrap,avcodec_send_frame         \
6289                   -Wl,--wrap,avcodec_receive_frame      \
6290                   -Wl,--wrap,swr_convert                \
6291                   -Wl,--wrap,avresample_convert         \
6292                   -Wl,--wrap,sws_scale ||
6293     disable xmm_clobber_test
6294
6295 check_ld "cc" <<EOF && enable proper_dce
6296 extern const int array[512];
6297 static inline int func(void) { return array[0]; }
6298 int main(void) { return 0; }
6299 EOF
6300
6301 if enabled proper_dce; then
6302     echo "X { local: *; };" > $TMPV
6303     if test_ldflags -Wl,${version_script},$TMPV; then
6304         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6305         quotes='""'
6306         check_cc <<EOF && enable symver_asm_label
6307 void ff_foo(void) __asm__ ("av_foo@VERSION");
6308 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6309 EOF
6310         check_cc <<EOF && enable symver_gnu_asm
6311 __asm__(".symver ff_foo,av_foo@VERSION");
6312 void ff_foo(void) {}
6313 EOF
6314     fi
6315 fi
6316
6317 if [ -z "$optflags" ]; then
6318     if enabled small; then
6319         optflags=$cflags_size
6320     elif enabled optimizations; then
6321         optflags=$cflags_speed
6322     else
6323         optflags=$cflags_noopt
6324     fi
6325 fi
6326
6327 if [ -z "$nvccflags" ]; then
6328     nvccflags=$nvccflags_default
6329 fi
6330
6331 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6332     nvccflags="$nvccflags -m64"
6333 else
6334     nvccflags="$nvccflags -m32"
6335 fi
6336
6337 check_optflags(){
6338     check_cflags "$@"
6339     enabled lto && check_ldflags "$@"
6340 }
6341
6342 check_optflags $optflags
6343 check_optflags -fno-math-errno
6344 check_optflags -fno-signed-zeros
6345
6346 if enabled lto; then
6347     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6348     check_cflags  -flto
6349     check_ldflags -flto $cpuflags
6350     disable inline_asm_direct_symbol_refs
6351 fi
6352
6353 enabled ftrapv && check_cflags -ftrapv
6354
6355 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6356 int x;
6357 EOF
6358
6359
6360 if enabled icc; then
6361     # Just warnings, no remarks
6362     check_cflags -w1
6363     # -wd: Disable following warnings
6364     # 144, 167, 556: -Wno-pointer-sign
6365     # 188: enumerated type mixed with another type
6366     # 1292: attribute "foo" ignored
6367     # 1419: external declaration in primary source file
6368     # 10006: ignoring unknown option -fno-signed-zeros
6369     # 10148: ignoring unknown option -Wno-parentheses
6370     # 10156: ignoring option '-W'; no argument required
6371     # 13200: No EMMS instruction before call to function
6372     # 13203: No EMMS instruction before return from function
6373     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6374     # 11030: Warning unknown option --as-needed
6375     # 10156: ignoring option '-export'; no argument required
6376     check_ldflags -wd10156,11030
6377     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6378     enable ebp_available
6379     # The test above does not test linking
6380     enabled lto && disable symver_asm_label
6381     if enabled x86_32; then
6382         icc_version=$($cc -dumpversion)
6383         test ${icc_version%%.*} -ge 11 &&
6384             check_cflags -falign-stack=maintain-16-byte ||
6385             disable aligned_stack
6386     fi
6387 elif enabled gcc; then
6388     check_optflags -fno-tree-vectorize
6389     check_cflags -Werror=format-security
6390     check_cflags -Werror=implicit-function-declaration
6391     check_cflags -Werror=missing-prototypes
6392     check_cflags -Werror=return-type
6393     check_cflags -Werror=vla
6394     check_cflags -Wformat
6395     check_cflags -fdiagnostics-color=auto
6396     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6397 elif enabled llvm_gcc; then
6398     check_cflags -mllvm -stack-alignment=16
6399 elif enabled clang; then
6400     check_cflags -mllvm -stack-alignment=16
6401     check_cflags -mstack-alignment=16
6402     check_cflags -Qunused-arguments
6403     check_cflags -Werror=implicit-function-declaration
6404     check_cflags -Werror=missing-prototypes
6405     check_cflags -Werror=return-type
6406 elif enabled cparser; then
6407     add_cflags -Wno-missing-variable-declarations
6408     add_cflags -Wno-empty-statement
6409 elif enabled armcc; then
6410     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6411     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6412     # 2523: use of inline assembly is deprecated
6413     add_cflags -W${armcc_opt},--diag_suppress=2523
6414     add_cflags -W${armcc_opt},--diag_suppress=1207
6415     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6416     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6417     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6418     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6419 elif enabled pathscale; then
6420     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6421     disable inline_asm
6422 elif enabled_any msvc icl; then
6423     enabled x86_32 && disable aligned_stack
6424     enabled_all x86_32 debug && add_cflags -Oy-
6425     enabled debug && add_ldflags -debug
6426     enable pragma_deprecated
6427     if enabled icl; then
6428         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6429         # (correctly) on icl 13.x.
6430         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6431             add_cflags -Qansi-alias
6432         # Some inline asm is not compilable in debug
6433         if enabled debug; then
6434             disable ebp_available
6435             disable ebx_available
6436         fi
6437     fi
6438     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6439     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6440     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6441     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6442     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6443     # MSVC 2013 and newer can handle it fine.
6444     # If this declspec fails, force including stdlib.h before the restrict redefinition
6445     # happens in config.h.
6446     if [ $_restrict != restrict ]; then
6447         check_cc <<EOF || add_cflags -FIstdlib.h
6448 __declspec($_restrict) void* foo(int);
6449 EOF
6450     fi
6451     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6452     # Issue has been fixed in MSVC v19.00.24218.
6453     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6454         check_cflags -d2SSAOptimizer-
6455     # enable utf-8 source processing on VS2015 U2 and newer
6456     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6457         add_cflags -utf-8
6458 fi
6459
6460 for pfx in "" host_; do
6461     varname=${pfx%_}cc_type
6462     eval "type=\$$varname"
6463     if [ "$type" = "msvc" ]; then
6464         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6465 static inline int foo(int a) { return a; }
6466 EOF
6467     fi
6468 done
6469
6470 case $as_type in
6471     clang)
6472         add_asflags -Qunused-arguments
6473     ;;
6474 esac
6475
6476 case $ld_type in
6477     clang)
6478         check_ldflags -Qunused-arguments
6479     ;;
6480 esac
6481
6482 enable frame_thread_encoder
6483
6484 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6485
6486 check_deps $CONFIG_LIST       \
6487            $CONFIG_EXTRA      \
6488            $HAVE_LIST         \
6489            $ALL_COMPONENTS    \
6490
6491 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"
6492
6493
6494 if test $target_os = "haiku"; then
6495     disable memalign
6496     disable posix_memalign
6497 fi
6498
6499 flatten_extralibs(){
6500     unset nested_entries
6501     list_name=$1
6502     eval list=\$${1}
6503     for entry in $list; do
6504         entry_copy=$entry
6505         resolve entry_copy
6506         append nested_entries $(filter '*_extralibs' $entry_copy)
6507         flat_entries=$(filter_out '*_extralibs' $entry_copy)
6508         eval $entry="\$flat_entries"
6509     done
6510     append $list_name "$nested_entries"
6511
6512     resolve nested_entries
6513     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6514         flatten_extralibs $list_name
6515     fi
6516 }
6517
6518 flatten_extralibs_wrapper(){
6519     list_name=$1
6520     flatten_extralibs $list_name
6521     unique $list_name
6522     resolve $list_name
6523     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6524     eval printf \''%s'\' \""\$$list_name"\"
6525 }
6526
6527 for linkunit in $LIBRARY_LIST; do
6528     unset current_extralibs
6529     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6530     for comp in ${components}; do
6531         enabled $comp || continue
6532         comp_extralibs="${comp}_extralibs"
6533         append current_extralibs $comp_extralibs
6534     done
6535     eval prepend ${linkunit}_extralibs $current_extralibs
6536 done
6537
6538 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6539     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6540 done
6541
6542 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6543
6544 for thread in $THREADS_LIST; do
6545     if enabled $thread; then
6546         test -n "$thread_type" &&
6547             die "ERROR: Only one thread type must be selected." ||
6548             thread_type="$thread"
6549     fi
6550 done
6551
6552 if disabled stdatomic; then
6553     if enabled atomics_gcc; then
6554         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6555     elif enabled atomics_win32; then
6556         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6557     elif enabled atomics_suncc; then
6558         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6559     elif enabled pthreads; then
6560         add_compat atomics/pthread/stdatomic.o
6561         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6562     else
6563         enabled threads && die "Threading is enabled, but no atomics are available"
6564         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6565     fi
6566 fi
6567
6568 # Check if requested libraries were found.
6569 for lib in $AUTODETECT_LIBS; do
6570     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6571 done
6572
6573 enabled zlib && add_cppflags -DZLIB_CONST
6574
6575 # conditional library dependencies, in linking order
6576 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6577 enabled afir_filter         && prepend avfilter_deps "avcodec"
6578 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6579 enabled aresample_filter    && prepend avfilter_deps "swresample"
6580 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6581 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6582 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6583 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6584 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6585 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6586 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6587 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6588 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6589 enabled pan_filter          && prepend avfilter_deps "swresample"
6590 enabled pp_filter           && prepend avfilter_deps "postproc"
6591 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6592 enabled resample_filter && prepend avfilter_deps "avresample"
6593 enabled sab_filter          && prepend avfilter_deps "swscale"
6594 enabled scale_filter    && prepend avfilter_deps "swscale"
6595 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6596 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6597 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6598 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6599 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6600 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6601 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6602 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6603 enabled spp_filter          && prepend avfilter_deps "avcodec"
6604 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6605 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6606 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6607
6608 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6609
6610 #FIXME
6611 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6612
6613 enabled opus_decoder    && prepend avcodec_deps "swresample"
6614
6615 expand_deps(){
6616     lib_deps=${1}_deps
6617     eval "deps=\$$lib_deps"
6618     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6619     unique $lib_deps
6620 }
6621
6622 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6623 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6624
6625 map 'expand_deps $v' $LIBRARY_LIST
6626
6627 license="LGPL version 2.1 or later"
6628 if enabled nonfree; then
6629     license="nonfree and unredistributable"
6630 elif enabled gplv3; then
6631     license="GPL version 3 or later"
6632 elif enabled lgplv3; then
6633     license="LGPL version 3 or later"
6634 elif enabled gpl; then
6635     license="GPL version 2 or later"
6636 fi
6637
6638 if test "$quiet" != "yes"; then
6639
6640 echo "install prefix            $prefix"
6641 echo "source path               $source_path"
6642 echo "C compiler                $cc"
6643 echo "C library                 $libc_type"
6644 if test "$host_cc" != "$cc"; then
6645     echo "host C compiler           $host_cc"
6646     echo "host C library            $host_libc_type"
6647 fi
6648 echo "ARCH                      $arch ($cpu)"
6649 if test "$build_suffix" != ""; then
6650     echo "build suffix              $build_suffix"
6651 fi
6652 if test "$progs_suffix" != ""; then
6653     echo "progs suffix              $progs_suffix"
6654 fi
6655 if test "$extra_version" != ""; then
6656     echo "version string suffix     $extra_version"
6657 fi
6658 echo "big-endian                ${bigendian-no}"
6659 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6660 if enabled x86; then
6661     echo "standalone assembly       ${x86asm-no}"
6662     echo "x86 assembler             ${x86asmexe}"
6663     echo "MMX enabled               ${mmx-no}"
6664     echo "MMXEXT enabled            ${mmxext-no}"
6665     echo "3DNow! enabled            ${amd3dnow-no}"
6666     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6667     echo "SSE enabled               ${sse-no}"
6668     echo "SSSE3 enabled             ${ssse3-no}"
6669     echo "AESNI enabled             ${aesni-no}"
6670     echo "AVX enabled               ${avx-no}"
6671     echo "AVX2 enabled              ${avx2-no}"
6672     echo "XOP enabled               ${xop-no}"
6673     echo "FMA3 enabled              ${fma3-no}"
6674     echo "FMA4 enabled              ${fma4-no}"
6675     echo "i686 features enabled     ${i686-no}"
6676     echo "CMOV is fast              ${fast_cmov-no}"
6677     echo "EBX available             ${ebx_available-no}"
6678     echo "EBP available             ${ebp_available-no}"
6679 fi
6680 if enabled aarch64; then
6681     echo "NEON enabled              ${neon-no}"
6682     echo "VFP enabled               ${vfp-no}"
6683 fi
6684 if enabled arm; then
6685     echo "ARMv5TE enabled           ${armv5te-no}"
6686     echo "ARMv6 enabled             ${armv6-no}"
6687     echo "ARMv6T2 enabled           ${armv6t2-no}"
6688     echo "VFP enabled               ${vfp-no}"
6689     echo "NEON enabled              ${neon-no}"
6690     echo "THUMB enabled             ${thumb-no}"
6691 fi
6692 if enabled mips; then
6693     echo "MIPS FPU enabled          ${mipsfpu-no}"
6694     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6695     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6696     echo "MIPS MSA enabled          ${msa-no}"
6697     echo "LOONGSON MMI enabled      ${mmi-no}"
6698 fi
6699 if enabled ppc; then
6700     echo "AltiVec enabled           ${altivec-no}"
6701     echo "VSX enabled               ${vsx-no}"
6702     echo "POWER8 enabled            ${power8-no}"
6703     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6704     echo "dcbzl available           ${dcbzl-no}"
6705 fi
6706 echo "debug symbols             ${debug-no}"
6707 echo "strip symbols             ${stripping-no}"
6708 echo "optimize for size         ${small-no}"
6709 echo "optimizations             ${optimizations-no}"
6710 echo "static                    ${static-no}"
6711 echo "shared                    ${shared-no}"
6712 echo "postprocessing support    ${postproc-no}"
6713 echo "network support           ${network-no}"
6714 echo "threading support         ${thread_type-no}"
6715 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6716 echo "texi2html enabled         ${texi2html-no}"
6717 echo "perl enabled              ${perl-no}"
6718 echo "pod2man enabled           ${pod2man-no}"
6719 echo "makeinfo enabled          ${makeinfo-no}"
6720 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6721 test -n "$random_seed" &&
6722     echo "random seed               ${random_seed}"
6723 echo
6724
6725 echo "External libraries:"
6726 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
6727 echo
6728
6729 echo "External libraries providing hardware acceleration:"
6730 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
6731 echo
6732
6733 echo "Libraries:"
6734 print_enabled '' $LIBRARY_LIST | print_in_columns
6735 echo
6736
6737 echo "Programs:"
6738 print_enabled '' $PROGRAM_LIST | print_in_columns
6739 echo
6740
6741 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6742     echo "Enabled ${type}s:"
6743     eval list=\$$(toupper $type)_LIST
6744     print_enabled '_*' $list | print_in_columns
6745     echo
6746 done
6747
6748 if test -n "$ignore_tests"; then
6749     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6750     echo "Ignored FATE tests:"
6751     echo $ignore_tests | print_in_columns
6752     echo
6753 fi
6754
6755 echo "License: $license"
6756
6757 fi # test "$quiet" != "yes"
6758
6759 if test -n "$WARNINGS"; then
6760     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6761     enabled fatal_warnings && exit 1
6762 fi
6763
6764 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6765
6766 esc(){
6767     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
6768 }
6769
6770 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
6771
6772 enabled stripping || strip="echo skipping strip"
6773 enabled stripping || striptype=""
6774
6775 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6776
6777 cat > ffbuild/config.mak <<EOF
6778 # Automatically generated by configure - do not modify!
6779 ifndef FFMPEG_CONFIG_MAK
6780 FFMPEG_CONFIG_MAK=1
6781 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6782 prefix=$prefix
6783 LIBDIR=\$(DESTDIR)$libdir
6784 SHLIBDIR=\$(DESTDIR)$shlibdir
6785 INCDIR=\$(DESTDIR)$incdir
6786 BINDIR=\$(DESTDIR)$bindir
6787 DATADIR=\$(DESTDIR)$datadir
6788 DOCDIR=\$(DESTDIR)$docdir
6789 MANDIR=\$(DESTDIR)$mandir
6790 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6791 INSTALL_NAME_DIR=$install_name_dir
6792 SRC_PATH=$source_path
6793 SRC_LINK=$source_link
6794 ifndef MAIN_MAKEFILE
6795 SRC_PATH:=\$(SRC_PATH:.%=..%)
6796 endif
6797 CC_IDENT=$cc_ident
6798 ARCH=$arch
6799 INTRINSICS=$intrinsics
6800 EXTERN_PREFIX=$extern_prefix
6801 CC=$cc
6802 CXX=$cxx
6803 AS=$as
6804 OBJCC=$objcc
6805 LD=$ld
6806 DEPCC=$dep_cc
6807 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6808 DEPAS=$as
6809 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6810 X86ASM=$x86asmexe
6811 DEPX86ASM=$x86asmexe
6812 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6813 AR=$ar
6814 ARFLAGS=$arflags
6815 AR_O=$ar_o
6816 AR_CMD=$ar
6817 NM_CMD=$nm
6818 RANLIB=$ranlib
6819 STRIP=$strip
6820 STRIPTYPE=$striptype
6821 NVCC=$nvcc
6822 CP=cp -p
6823 LN_S=$ln_s
6824 CPPFLAGS=$CPPFLAGS
6825 CFLAGS=$CFLAGS
6826 CXXFLAGS=$CXXFLAGS
6827 OBJCFLAGS=$OBJCFLAGS
6828 ASFLAGS=$ASFLAGS
6829 NVCCFLAGS=$nvccflags
6830 AS_C=$AS_C
6831 AS_O=$AS_O
6832 OBJCC_C=$OBJCC_C
6833 OBJCC_E=$OBJCC_E
6834 OBJCC_O=$OBJCC_O
6835 CC_C=$CC_C
6836 CC_E=$CC_E
6837 CC_O=$CC_O
6838 CXX_C=$CXX_C
6839 CXX_O=$CXX_O
6840 NVCC_C=$NVCC_C
6841 NVCC_O=$NVCC_O
6842 LD_O=$LD_O
6843 X86ASM_O=$X86ASM_O
6844 LD_LIB=$LD_LIB
6845 LD_PATH=$LD_PATH
6846 WINDRES=$windres
6847 DEPWINDRES=$dep_cc
6848 DOXYGEN=$doxygen
6849 LDFLAGS=$LDFLAGS
6850 LDEXEFLAGS=$LDEXEFLAGS
6851 LDSOFLAGS=$LDSOFLAGS
6852 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6853 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6854 X86ASMFLAGS=$X86ASMFLAGS
6855 BUILDSUF=$build_suffix
6856 PROGSSUF=$progs_suffix
6857 FULLNAME=$FULLNAME
6858 LIBPREF=$LIBPREF
6859 LIBSUF=$LIBSUF
6860 LIBNAME=$LIBNAME
6861 SLIBPREF=$SLIBPREF
6862 SLIBSUF=$SLIBSUF
6863 EXESUF=$EXESUF
6864 EXTRA_VERSION=$extra_version
6865 CCDEP=$CCDEP
6866 CXXDEP=$CXXDEP
6867 CCDEP_FLAGS=$CCDEP_FLAGS
6868 ASDEP=$ASDEP
6869 ASDEP_FLAGS=$ASDEP_FLAGS
6870 X86ASMDEP=$X86ASMDEP
6871 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
6872 CC_DEPFLAGS=$CC_DEPFLAGS
6873 AS_DEPFLAGS=$AS_DEPFLAGS
6874 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
6875 HOSTCC=$host_cc
6876 HOSTLD=$host_ld
6877 HOSTCFLAGS=$host_cflags
6878 HOSTCPPFLAGS=$host_cppflags
6879 HOSTEXESUF=$HOSTEXESUF
6880 HOSTLDFLAGS=$host_ldflags
6881 HOSTEXTRALIBS=$host_extralibs
6882 DEPHOSTCC=$host_cc
6883 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6884 HOSTCCDEP=$HOSTCCDEP
6885 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6886 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6887 HOSTCC_C=$HOSTCC_C
6888 HOSTCC_O=$HOSTCC_O
6889 HOSTLD_O=$HOSTLD_O
6890 TARGET_EXEC=$target_exec $target_exec_args
6891 TARGET_PATH=$target_path
6892 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6893 CFLAGS-ffplay=${sdl2_cflags}
6894 CFLAGS_HEADERS=$CFLAGS_HEADERS
6895 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6896 EXTRALIBS=$extralibs
6897 COMPAT_OBJS=$compat_objs
6898 INSTALL=$install
6899 SLIBNAME=${SLIBNAME}
6900 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6901 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6902 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6903 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6904 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6905 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6906 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6907 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6908 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6909 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6910 NOREDZONE_FLAGS=$noredzone_flags
6911 LIBFUZZER_PATH=$libfuzzer_path
6912 IGNORE_TESTS=$ignore_tests
6913 EOF
6914
6915 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
6916
6917 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6918     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
6919 done
6920
6921 cat > $TMPH <<EOF
6922 /* Automatically generated by configure - do not modify! */
6923 #ifndef FFMPEG_CONFIG_H
6924 #define FFMPEG_CONFIG_H
6925 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6926 #define FFMPEG_LICENSE "$(c_escape $license)"
6927 #define CONFIG_THIS_YEAR 2017
6928 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6929 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6930 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6931 #define av_restrict $_restrict
6932 #define EXTERN_PREFIX "${extern_prefix}"
6933 #define EXTERN_ASM ${extern_prefix}
6934 #define BUILDSUF "$build_suffix"
6935 #define SLIBSUF "$SLIBSUF"
6936 #define HAVE_MMX2 HAVE_MMXEXT
6937 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6938 EOF
6939
6940 test -n "$assert_level" &&
6941     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6942
6943 test -n "$malloc_prefix" &&
6944     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6945
6946 if enabled x86asm; then
6947     append config_files $TMPASM
6948     cat > $TMPASM <<EOF
6949 ; Automatically generated by configure - do not modify!
6950 EOF
6951 fi
6952
6953 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6954
6955
6956 mkdir -p doc
6957 mkdir -p tests
6958 mkdir -p tests/api
6959 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6960
6961 print_config ARCH_   "$config_files" $ARCH_LIST
6962 print_config HAVE_   "$config_files" $HAVE_LIST
6963 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6964                                      $CONFIG_EXTRA      \
6965                                      $ALL_COMPONENTS    \
6966
6967 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6968 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
6969
6970 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6971 cp_if_changed $TMPH config.h
6972 touch ffbuild/.config
6973
6974 enabled x86asm && cp_if_changed $TMPASM config.asm
6975
6976 cat > $TMPH <<EOF
6977 /* Generated by ffmpeg configure */
6978 #ifndef AVUTIL_AVCONFIG_H
6979 #define AVUTIL_AVCONFIG_H
6980 EOF
6981
6982 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6983
6984 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6985
6986 cp_if_changed $TMPH libavutil/avconfig.h
6987
6988 # generate the lists of enabled components
6989 print_enabled_components(){
6990     file=$1
6991     struct_name=$2
6992     name=$3
6993     shift 3
6994     echo "static const $struct_name * const $name[] = {" > $TMPH
6995     for c in $*; do
6996         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6997     done
6998     echo "    NULL };" >> $TMPH
6999     cp_if_changed $TMPH $file
7000 }
7001
7002 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7003 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7004
7005 # Settings for pkg-config files
7006
7007 cat > $TMPH <<EOF
7008 # Automatically generated by configure - do not modify!
7009 shared=$shared
7010 build_suffix=$build_suffix
7011 prefix=$prefix
7012 libdir=$libdir
7013 incdir=$incdir
7014 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7015 source_path=${source_path}
7016 LIBPREF=${LIBPREF}
7017 LIBSUF=${LIBSUF}
7018 extralibs_avutil="$avutil_extralibs"
7019 extralibs_avcodec="$avcodec_extralibs"
7020 extralibs_avformat="$avformat_extralibs"
7021 extralibs_avdevice="$avdevice_extralibs"
7022 extralibs_avfilter="$avfilter_extralibs"
7023 extralibs_avresample="$avresample_extralibs"
7024 extralibs_postproc="$postproc_extralibs"
7025 extralibs_swscale="$swscale_extralibs"
7026 extralibs_swresample="$swresample_extralibs"
7027 EOF
7028
7029 for lib in $LIBRARY_LIST; do
7030     lib_deps="$(eval echo \$${lib}_deps)"
7031     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7032 done
7033
7034 cp_if_changed $TMPH ffbuild/config.sh