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
 113 Program options:
 114   --disable-programs       do not build command line programs
 115   --disable-ffmpeg         disable ffmpeg build
 116   --disable-ffplay         disable ffplay build
 117   --disable-ffprobe        disable ffprobe build
 118   --disable-ffserver       disable ffserver build
 119
 120 Documentation options:
 121   --disable-doc            do not build documentation
 122   --disable-htmlpages      do not build HTML documentation pages
 123   --disable-manpages       do not build man documentation pages
 124   --disable-podpages       do not build POD documentation pages
 125   --disable-txtpages       do not build text documentation pages
 126
 127 Component options:
 128   --disable-avdevice       disable libavdevice build
 129   --disable-avcodec        disable libavcodec build
 130   --disable-avformat       disable libavformat build
 131   --disable-swresample     disable libswresample build
 132   --disable-swscale        disable libswscale build
 133   --disable-postproc       disable libpostproc build
 134   --disable-avfilter       disable libavfilter build
 135   --enable-avresample      enable libavresample build [no]
 136   --disable-pthreads       disable pthreads [autodetect]
 137   --disable-w32threads     disable Win32 threads [autodetect]
 138   --disable-os2threads     disable OS/2 threads [autodetect]
 139   --disable-network        disable network support [no]
 140   --disable-dct            disable DCT code
 141   --disable-dwt            disable DWT code
 142   --disable-error-resilience disable error resilience code
 143   --disable-lsp            disable LSP code
 144   --disable-lzo            disable LZO decoder code
 145   --disable-mdct           disable MDCT code
 146   --disable-rdft           disable RDFT code
 147   --disable-fft            disable FFT code
 148   --disable-faan           disable floating point AAN (I)DCT code
 149   --disable-pixelutils     disable pixel utils in libavutil
 150
 151 Individual component options:
 152   --disable-everything     disable all components listed below
 153   --disable-encoder=NAME   disable encoder NAME
 154   --enable-encoder=NAME    enable encoder NAME
 155   --disable-encoders       disable all encoders
 156   --disable-decoder=NAME   disable decoder NAME
 157   --enable-decoder=NAME    enable decoder NAME
 158   --disable-decoders       disable all decoders
 159   --disable-hwaccel=NAME   disable hwaccel NAME
 160   --enable-hwaccel=NAME    enable hwaccel NAME
 161   --disable-hwaccels       disable all hwaccels
 162   --disable-muxer=NAME     disable muxer NAME
 163   --enable-muxer=NAME      enable muxer NAME
 164   --disable-muxers         disable all muxers
 165   --disable-demuxer=NAME   disable demuxer NAME
 166   --enable-demuxer=NAME    enable demuxer NAME
 167   --disable-demuxers       disable all demuxers
 168   --enable-parser=NAME     enable parser NAME
 169   --disable-parser=NAME    disable parser NAME
 170   --disable-parsers        disable all parsers
 171   --enable-bsf=NAME        enable bitstream filter NAME
 172   --disable-bsf=NAME       disable bitstream filter NAME
 173   --disable-bsfs           disable all bitstream filters
 174   --enable-protocol=NAME   enable protocol NAME
 175   --disable-protocol=NAME  disable protocol NAME
 176   --disable-protocols      disable all protocols
 177   --enable-indev=NAME      enable input device NAME
 178   --disable-indev=NAME     disable input device NAME
 179   --disable-indevs         disable input devices
 180   --enable-outdev=NAME     enable output device NAME
 181   --disable-outdev=NAME    disable output device NAME
 182   --disable-outdevs        disable output devices
 183   --disable-devices        disable all devices
 184   --enable-filter=NAME     enable filter NAME
 185   --disable-filter=NAME    disable filter NAME
 186   --disable-filters        disable all filters
 187
 188 External library support:
 189
 190   Using any of the following switches will allow FFmpeg to link to the
 191   corresponding external library. All the components depending on that library
 192   will become enabled, if all their other dependencies are met and they are not
 193   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 194   libwavpack and allow the libwavpack encoder to be built, unless it is
 195   specifically disabled with --disable-encoder=libwavpack.
 196
 197   Note that only the system libraries are auto-detected. All the other external
 198   libraries must be explicitly enabled.
 199
 200   Also note that the following help text describes the purpose of the libraries
 201   themselves, not all their features will necessarily be usable by FFmpeg.
 202
 203   --enable-avisynth        enable reading of AviSynth script files [no]
 204   --disable-bzlib          disable bzlib [autodetect]
 205   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 206   --enable-frei0r          enable frei0r video filtering [no]
 207   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 208                            if openssl, librtmp or gmp is not used [no]
 209   --enable-gmp             enable gmp, needed for rtmp(t)e support
 210                            if openssl or librtmp is not used [no]
 211   --enable-gnutls          enable gnutls, needed for https support
 212                            if openssl is not used [no]
 213   --disable-iconv          disable iconv [autodetect]
 214   --enable-jni             enable JNI support [no]
 215   --enable-ladspa          enable LADSPA audio filtering [no]
 216   --enable-libass          enable libass subtitles rendering,
 217                            needed for subtitles and ass filter [no]
 218   --enable-libbluray       enable BluRay reading using libbluray [no]
 219   --enable-libbs2b         enable bs2b DSP library [no]
 220   --enable-libcaca         enable textual display using libcaca [no]
 221   --enable-libcelt         enable CELT decoding via libcelt [no]
 222   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 223   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 224                            and libraw1394 [no]
 225   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 226   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 227   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 228   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 229   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 230   --enable-libgme          enable Game Music Emu via libgme [no]
 231   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 232   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 233   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 234   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 235   --enable-libmodplug      enable ModPlug via libmodplug [no]
 236   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 237   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 238   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 239   --enable-libopencv       enable video filtering via libopencv [no]
 240   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 241   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 242   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 243   --enable-libopus         enable Opus de/encoding via libopus [no]
 244   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 245   --enable-librsvg         enable SVG rasterization via librsvg [no]
 246   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 247   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 248   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 249   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 250   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 251   --enable-libsoxr         enable Include libsoxr resampling [no]
 252   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 253   --enable-libssh          enable SFTP protocol via libssh [no]
 254   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 255   --enable-libtheora       enable Theora encoding via libtheora [no]
 256   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 257   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 258   --enable-libvidstab      enable video stabilization using vid.stab [no]
 259   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 260   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 261                            native implementation exists [no]
 262   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 263   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 264   --enable-libwebp         enable WebP encoding via libwebp [no]
 265   --enable-libx264         enable H.264 encoding via x264 [no]
 266   --enable-libx265         enable HEVC encoding via x265 [no]
 267   --enable-libxavs         enable AVS encoding via xavs [no]
 268   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 269   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 270   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 271   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 272   --enable-libxvid         enable Xvid encoding via xvidcore,
 273                            native MPEG-4/Xvid encoder exists [no]
 274   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 275   --enable-libzmq          enable message passing via libzmq [no]
 276   --enable-libzvbi         enable teletext support via libzvbi [no]
 277   --disable-lzma           disable lzma [autodetect]
 278   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 279   --enable-mediacodec      enable Android MediaCodec support [no]
 280   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 281   --enable-openal          enable OpenAL 1.1 capture support [no]
 282   --enable-opencl          enable OpenCL code
 283   --enable-opengl          enable OpenGL rendering [no]
 284   --enable-openssl         enable openssl, needed for https support
 285                            if gnutls is not used [no]
 286   --disable-schannel       disable SChannel SSP, needed for TLS support on
 287                            Windows if openssl and gnutls are not used [autodetect]
 288   --disable-sdl2           disable sdl2 [autodetect]
 289   --disable-securetransport disable Secure Transport, needed for TLS support
 290                            on OSX if openssl and gnutls are not used [autodetect]
 291   --disable-xlib           disable xlib [autodetect]
 292   --disable-zlib           disable zlib [autodetect]
 293
 294   The following libraries provide various hardware acceleration features:
 295   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 296   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
 297   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
 298   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 299   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 300   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 301   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 302   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 303   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 304   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 305   --enable-omx             enable OpenMAX IL code [no]
 306   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 307   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 308   --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
 309   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 310   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 311
 312 Toolchain options:
 313   --arch=ARCH              select architecture [$arch]
 314   --cpu=CPU                select the minimum required CPU (affects
 315                            instruction selection, may crash on older CPUs)
 316   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 317   --progs-suffix=SUFFIX    program name suffix []
 318   --enable-cross-compile   assume a cross-compiler is used
 319   --sysroot=PATH           root of cross-build tree
 320   --sysinclude=PATH        location of cross-build system headers
 321   --target-os=OS           compiler targets OS [$target_os]
 322   --target-exec=CMD        command to run executables on target
 323   --target-path=DIR        path to view of build directory on target
 324   --target-samples=DIR     path to samples directory on target
 325   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 326   --toolchain=NAME         set tool defaults according to NAME
 327   --nm=NM                  use nm tool NM [$nm_default]
 328   --ar=AR                  use archive tool AR [$ar_default]
 329   --as=AS                  use assembler AS [$as_default]
 330   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 331   --strip=STRIP            use strip tool STRIP [$strip_default]
 332   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 333   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 334   --cc=CC                  use C compiler CC [$cc_default]
 335   --cxx=CXX                use C compiler CXX [$cxx_default]
 336   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 337   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 338   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 339   --ld=LD                  use linker LD [$ld_default]
 340   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 341   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 342   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 343   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 344   --host-cc=HOSTCC         use host C compiler HOSTCC
 345   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 346   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 347   --host-ld=HOSTLD         use host linker HOSTLD
 348   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 349   --host-libs=HLIBS        use libs HLIBS when linking for host
 350   --host-os=OS             compiler host OS [$target_os]
 351   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 352   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 353   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 354   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 355   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 356   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 357   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 358   --extra-version=STRING   version string suffix []
 359   --optflags=OPTFLAGS      override optimization-related compiler flags
 360   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 361   --build-suffix=SUFFIX    library name suffix []
 362   --enable-pic             build position-independent code
 363   --enable-thumb           compile for Thumb instruction set
 364   --enable-lto             use link-time optimization
 365   --env="ENV=override"     override the environment variables
 366
 367 Advanced options (experts only):
 368   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 369   --custom-allocator=NAME  use a supported custom allocator
 370   --disable-symver         disable symbol versioning
 371   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 372   --disable-safe-bitstream-reader
 373                            disable buffer boundary checking in bitreaders
 374                            (faster, but may crash)
 375   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 376
 377 Optimization options (experts only):
 378   --disable-asm            disable all assembly optimizations
 379   --disable-altivec        disable AltiVec optimizations
 380   --disable-vsx            disable VSX optimizations
 381   --disable-power8         disable POWER8 optimizations
 382   --disable-amd3dnow       disable 3DNow! optimizations
 383   --disable-amd3dnowext    disable 3DNow! extended optimizations
 384   --disable-mmx            disable MMX optimizations
 385   --disable-mmxext         disable MMXEXT optimizations
 386   --disable-sse            disable SSE optimizations
 387   --disable-sse2           disable SSE2 optimizations
 388   --disable-sse3           disable SSE3 optimizations
 389   --disable-ssse3          disable SSSE3 optimizations
 390   --disable-sse4           disable SSE4 optimizations
 391   --disable-sse42          disable SSE4.2 optimizations
 392   --disable-avx            disable AVX optimizations
 393   --disable-xop            disable XOP optimizations
 394   --disable-fma3           disable FMA3 optimizations
 395   --disable-fma4           disable FMA4 optimizations
 396   --disable-avx2           disable AVX2 optimizations
 397   --disable-aesni          disable AESNI optimizations
 398   --disable-armv5te        disable armv5te optimizations
 399   --disable-armv6          disable armv6 optimizations
 400   --disable-armv6t2        disable armv6t2 optimizations
 401   --disable-vfp            disable VFP optimizations
 402   --disable-neon           disable NEON optimizations
 403   --disable-inline-asm     disable use of inline assembly
 404   --disable-x86asm         disable use of standalone x86 assembly
 405   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 406   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 407   --disable-msa            disable MSA optimizations
 408   --disable-mipsfpu        disable floating point MIPS optimizations
 409   --disable-mmi            disable Loongson SIMD optimizations
 410   --disable-fast-unaligned consider unaligned accesses slow
 411
 412 Developer options (useful when working on FFmpeg itself):
 413   --disable-debug          disable debugging symbols
 414   --enable-debug=LEVEL     set the debug level [$debuglevel]
 415   --disable-optimizations  disable compiler optimizations
 416   --enable-extra-warnings  enable more compiler warnings
 417   --disable-stripping      disable stripping of executables and shared libraries
 418   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 419                            2 causes a slowdown at runtime.
 420   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 421   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 422                            leaks and errors, using the specified valgrind binary.
 423                            Cannot be combined with --target-exec
 424   --enable-ftrapv          Trap arithmetic overflows
 425   --samples=PATH           location of test samples for FATE, if not set use
 426                            \$FATE_SAMPLES at make invocation time.
 427   --enable-neon-clobber-test check NEON registers for clobbering (should be
 428                            used only for debugging purposes)
 429   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 430                            should be used only for debugging purposes)
 431   --enable-random          randomly enable/disable components
 432   --disable-random
 433   --enable-random=LIST     randomly enable/disable specific components or
 434   --disable-random=LIST    component groups. LIST is a comma-separated list
 435                            of NAME[:PROB] entries where NAME is a component
 436                            (group) and PROB the probability associated with
 437                            NAME (default 0.5).
 438   --random-seed=VALUE      seed value for --enable/disable-random
 439   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 440                            (only applies to --disable-optimizations builds)
 441   --enable-osfuzz          Enable building fuzzer tool
 442   --libfuzzer=PATH         path to libfuzzer
 443   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 444                            in the name) of tests whose result is ignored
 445
 446 NOTE: Object files are built at the place where configure is launched.
 447 EOF
 448   exit 0
 449 }
 450
 451 quotes='""'
 452 if test -t 1 && which tput >/dev/null 2>&1; then
 453     ncolors=$(tput colors)
 454     if test -n "$ncolors" && test $ncolors -ge 8; then
 455         bold_color=$(tput bold)
 456         warn_color=$(tput setaf 3)
 457         error_color=$(tput setaf 1)
 458         reset_color=$(tput sgr0)
 459     fi
 460     # 72 used instead of 80 since that's the default of pr
 461     ncols=$(tput cols)
 462 fi
 463 : ${ncols:=72}
 464
 465 log(){
 466     echo "$@" >> $logfile
 467 }
 468
 469 log_file(){
 470     log BEGIN $1
 471     pr -n -t $1 >> $logfile
 472     log END $1
 473 }
 474
 475 warn(){
 476     log "WARNING: $*"
 477     WARNINGS="${WARNINGS}WARNING: $*\n"
 478 }
 479
 480 die(){
 481     log "$@"
 482     echo "$error_color$bold_color$@$reset_color"
 483     cat <<EOF
 484
 485 If you think configure made a mistake, make sure you are using the latest
 486 version from Git.  If the latest version fails, report the problem to the
 487 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 488 EOF
 489     if disabled logging; then
 490         cat <<EOF
 491 Rerun configure with logging enabled (do not use --disable-logging), and
 492 include the log this produces with your report.
 493 EOF
 494     else
 495         cat <<EOF
 496 Include the log file "$logfile" produced by configure as this will help
 497 solve the problem.
 498 EOF
 499     fi
 500     exit 1
 501 }
 502
 503 # Avoid locale weirdness, besides we really just want to translate ASCII.
 504 toupper(){
 505     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 506 }
 507
 508 tolower(){
 509     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 510 }
 511
 512 c_escape(){
 513     echo "$*" | sed 's/["\\]/\\\0/g'
 514 }
 515
 516 sh_quote(){
 517     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 518     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 519     echo "$v"
 520 }
 521
 522 cleanws(){
 523     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 524 }
 525
 526 filter(){
 527     pat=$1
 528     shift
 529     for v; do
 530         eval "case $v in $pat) printf '%s ' $v ;; esac"
 531     done
 532 }
 533
 534 filter_out(){
 535     pat=$1
 536     shift
 537     for v; do
 538         eval "case $v in $pat) ;; *) printf '%s ' $v ;; esac"
 539     done
 540 }
 541
 542 map(){
 543     m=$1
 544     shift
 545     for v; do eval $m; done
 546 }
 547
 548 add_suffix(){
 549     suffix=$1
 550     shift
 551     for v; do echo ${v}${suffix}; done
 552 }
 553
 554 set_all(){
 555     value=$1
 556     shift
 557     for var in $*; do
 558         eval $var=$value
 559     done
 560 }
 561
 562 set_weak(){
 563     value=$1
 564     shift
 565     for var; do
 566         eval : \${$var:=$value}
 567     done
 568 }
 569
 570 sanitize_var_name(){
 571     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 572 }
 573
 574 set_safe(){
 575     var=$1
 576     shift
 577     eval $(sanitize_var_name "$var")='$*'
 578 }
 579
 580 get_safe(){
 581     eval echo \$$(sanitize_var_name "$1")
 582 }
 583
 584 pushvar(){
 585     for pvar in $*; do
 586         eval level=\${${pvar}_level:=0}
 587         eval ${pvar}_${level}="\$$pvar"
 588         eval ${pvar}_level=$(($level+1))
 589     done
 590 }
 591
 592 popvar(){
 593     for pvar in $*; do
 594         eval level=\${${pvar}_level:-0}
 595         test $level = 0 && continue
 596         eval level=$(($level-1))
 597         eval $pvar="\${${pvar}_${level}}"
 598         eval ${pvar}_level=$level
 599         eval unset ${pvar}_${level}
 600     done
 601 }
 602
 603 request(){
 604     for var in $*; do
 605         eval ${var}_requested=yes
 606         eval $var=
 607     done
 608 }
 609
 610 enable(){
 611     set_all yes $*
 612 }
 613
 614 disable(){
 615     set_all no $*
 616 }
 617
 618 enable_weak(){
 619     set_weak yes $*
 620 }
 621
 622 disable_weak(){
 623     set_weak no $*
 624 }
 625
 626 enable_safe(){
 627     for var; do
 628         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 629     done
 630 }
 631
 632 disable_safe(){
 633     for var; do
 634         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 635     done
 636 }
 637
 638 do_enable_deep(){
 639     for var; do
 640         enabled $var && continue
 641         eval sel="\$${var}_select"
 642         eval sgs="\$${var}_suggest"
 643         pushvar var sgs
 644         enable_deep $sel
 645         popvar sgs
 646         enable_deep_weak $sgs
 647         popvar var
 648     done
 649 }
 650
 651 enable_deep(){
 652     do_enable_deep $*
 653     enable $*
 654 }
 655
 656 enable_deep_weak(){
 657     for var; do
 658         disabled $var && continue
 659         pushvar var
 660         do_enable_deep $var
 661         popvar var
 662         enable_weak $var
 663     done
 664 }
 665
 666 requested(){
 667     test "${1#!}" = "$1" && op='=' || op=!=
 668     eval test "x\$${1#!}_requested" $op "xyes"
 669 }
 670
 671 enabled(){
 672     test "${1#!}" = "$1" && op='=' || op=!=
 673     eval test "x\$${1#!}" $op "xyes"
 674 }
 675
 676 disabled(){
 677     test "${1#!}" = "$1" && op='=' || op=!=
 678     eval test "x\$${1#!}" $op "xno"
 679 }
 680
 681 enabled_all(){
 682     for opt; do
 683         enabled $opt || return 1
 684     done
 685 }
 686
 687 disabled_all(){
 688     for opt; do
 689         disabled $opt || return 1
 690     done
 691 }
 692
 693 enabled_any(){
 694     for opt; do
 695         enabled $opt && return 0
 696     done
 697 }
 698
 699 disabled_any(){
 700     for opt; do
 701         disabled $opt && return 0
 702     done
 703     return 1
 704 }
 705
 706 set_default(){
 707     for opt; do
 708         eval : \${$opt:=\$${opt}_default}
 709     done
 710 }
 711
 712 is_in(){
 713     value=$1
 714     shift
 715     for var in $*; do
 716         [ $var = $value ] && return 0
 717     done
 718     return 1
 719 }
 720
 721 do_check_deps(){
 722     for cfg; do
 723         cfg="${cfg#!}"
 724         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 725         disabled ${cfg}_checking && continue
 726         enable ${cfg}_checking
 727         append allopts $cfg
 728
 729         eval dep_all="\$${cfg}_deps"
 730         eval dep_any="\$${cfg}_deps_any"
 731         eval dep_sel="\$${cfg}_select"
 732         eval dep_sgs="\$${cfg}_suggest"
 733         eval dep_ifa="\$${cfg}_if"
 734         eval dep_ifn="\$${cfg}_if_any"
 735
 736         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 737         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 738         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 739
 740         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 741         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 742         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 743         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 744         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 745
 746         if enabled $cfg; then
 747             enable_deep $dep_sel
 748             enable_deep_weak $dep_sgs
 749         fi
 750
 751         disable ${cfg}_checking
 752     done
 753 }
 754
 755 check_deps(){
 756     unset allopts
 757
 758     do_check_deps "$@"
 759
 760     for cfg in $allopts; do
 761         enabled $cfg || continue
 762         eval dep_extralibs="\$${cfg}_extralibs"
 763         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 764     done
 765 }
 766
 767 print_config(){
 768     pfx=$1
 769     files=$2
 770     shift 2
 771     map 'eval echo "$v \${$v:-no}"' "$@" |
 772     awk "BEGIN { split(\"$files\", files) }
 773         {
 774             c = \"$pfx\" toupper(\$1);
 775             v = \$2;
 776             sub(/yes/, 1, v);
 777             sub(/no/,  0, v);
 778             for (f in files) {
 779                 file = files[f];
 780                 if (file ~ /\\.h\$/) {
 781                     printf(\"#define %s %d\\n\", c, v) >>file;
 782                 } else if (file ~ /\\.asm\$/) {
 783                     printf(\"%%define %s %d\\n\", c, v) >>file;
 784                 } else if (file ~ /\\.mak\$/) {
 785                     n = -v ? \"\" : \"!\";
 786                     printf(\"%s%s=yes\\n\", n, c) >>file;
 787                 } else if (file ~ /\\.texi\$/) {
 788                     pre = -v ? \"\" : \"@c \";
 789                     yesno = \$2;
 790                     c2 = tolower(c);
 791                     gsub(/_/, \"-\", c2);
 792                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 793                 }
 794             }
 795         }"
 796 }
 797
 798 print_enabled(){
 799     suf=$1
 800     shift
 801     for v; do
 802         enabled $v && printf "%s\n" ${v%$suf}
 803     done
 804 }
 805
 806 append(){
 807     var=$1
 808     shift
 809     eval "$var=\"\$$var $*\""
 810 }
 811
 812 prepend(){
 813     var=$1
 814     shift
 815     eval "$var=\"$* \$$var\""
 816 }
 817
 818 unique(){
 819     var=$1
 820     uniq_list=""
 821     for tok in $(eval echo \$$var); do
 822         uniq_list="$(filter_out $tok $uniq_list) $tok"
 823     done
 824     eval "$var=\"${uniq_list}\""
 825 }
 826
 827 add_cppflags(){
 828     append CPPFLAGS "$@"
 829 }
 830
 831 add_cflags(){
 832     append CFLAGS $($cflags_filter "$@")
 833 }
 834
 835 add_cflags_headers(){
 836     append CFLAGS_HEADERS $($cflags_filter "$@")
 837 }
 838
 839 add_cxxflags(){
 840     append CXXFLAGS $($cflags_filter "$@")
 841 }
 842
 843 add_asflags(){
 844     append ASFLAGS $($asflags_filter "$@")
 845 }
 846
 847 add_objcflags(){
 848     append OBJCFLAGS $($objcflags_filter "$@")
 849 }
 850
 851 add_ldflags(){
 852     append LDFLAGS $($ldflags_filter "$@")
 853 }
 854
 855 add_ldexeflags(){
 856     append LDEXEFLAGS $($ldflags_filter "$@")
 857 }
 858
 859 add_ldlibflags(){
 860     append LDLIBFLAGS $($ldflags_filter "$@")
 861 }
 862
 863 add_stripflags(){
 864     append ASMSTRIPFLAGS "$@"
 865 }
 866
 867 add_extralibs(){
 868     prepend extralibs $($ldflags_filter "$@")
 869 }
 870
 871 add_host_cppflags(){
 872     append host_cppflags "$@"
 873 }
 874
 875 add_host_cflags(){
 876     append host_cflags $($host_cflags_filter "$@")
 877 }
 878
 879 add_host_ldflags(){
 880     append host_ldflags $($host_ldflags_filter "$@")
 881 }
 882
 883 add_compat(){
 884     append compat_objs $1
 885     shift
 886     map 'add_cppflags -D$v' "$@"
 887 }
 888
 889 check_cmd(){
 890     log "$@"
 891     "$@" >> $logfile 2>&1
 892 }
 893
 894 check_stat(){
 895     log check_stat "$@"
 896     stat "$1" >> $logfile 2>&1
 897 }
 898
 899 cc_o(){
 900     eval printf '%s\\n' $CC_O
 901 }
 902
 903 cc_e(){
 904     eval printf '%s\\n' $CC_E
 905 }
 906
 907 check_cc(){
 908     log check_cc "$@"
 909     cat > $TMPC
 910     log_file $TMPC
 911     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 912 }
 913
 914 check_cxx(){
 915     log check_cxx "$@"
 916     cat > $TMPCPP
 917     log_file $TMPCPP
 918     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 919 }
 920
 921 check_objcc(){
 922     log check_objcc "$@"
 923     cat > $TMPM
 924     log_file $TMPM
 925     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 926 }
 927
 928 check_cpp(){
 929     log check_cpp "$@"
 930     cat > $TMPC
 931     log_file $TMPC
 932     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 933 }
 934
 935 as_o(){
 936     eval printf '%s\\n' $AS_O
 937 }
 938
 939 check_as(){
 940     log check_as "$@"
 941     cat > $TMPS
 942     log_file $TMPS
 943     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 944 }
 945
 946 check_inline_asm(){
 947     log check_inline_asm "$@"
 948     name="$1"
 949     code="$2"
 950     shift 2
 951     disable $name
 952     check_cc "$@" <<EOF && enable $name
 953 void foo(void){ __asm__ volatile($code); }
 954 EOF
 955 }
 956
 957 check_inline_asm_flags(){
 958     log check_inline_asm_flags "$@"
 959     name="$1"
 960     code="$2"
 961     flags=''
 962     shift 2
 963     while [ "$1" != "" ]; do
 964       append flags $1
 965       shift
 966     done;
 967     disable $name
 968     cat > $TMPC <<EOF
 969 void foo(void){ __asm__ volatile($code); }
 970 EOF
 971     log_file $TMPC
 972     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 973     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 974 }
 975
 976 check_insn(){
 977     log check_insn "$@"
 978     check_inline_asm ${1}_inline "\"$2\""
 979     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 980 }
 981
 982 check_x86asm(){
 983     log check_x86asm "$@"
 984     echo "$1" > $TMPS
 985     log_file $TMPS
 986     shift 1
 987     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
 988 }
 989
 990 ld_o(){
 991     eval printf '%s\\n' $LD_O
 992 }
 993
 994 check_ld(){
 995     log check_ld "$@"
 996     type=$1
 997     shift 1
 998     flags=$(filter_out '-l*|*.so' $@)
 999     libs=$(filter '-l*|*.so' $@)
1000     check_$type $($cflags_filter $flags) || return
1001     flags=$($ldflags_filter $flags)
1002     libs=$($ldflags_filter $libs)
1003     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1004 }
1005
1006 print_include(){
1007     hdr=$1
1008     test "${hdr%.h}" = "${hdr}" &&
1009         echo "#include $hdr"    ||
1010         echo "#include <$hdr>"
1011 }
1012
1013 check_code(){
1014     log check_code "$@"
1015     check=$1
1016     headers=$2
1017     code=$3
1018     shift 3
1019     {
1020         for hdr in $headers; do
1021             print_include $hdr
1022         done
1023         echo "int main(void) { $code; return 0; }"
1024     } | check_$check "$@"
1025 }
1026
1027 check_cppflags(){
1028     log check_cppflags "$@"
1029     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1030 int x;
1031 EOF
1032 }
1033
1034 test_cflags(){
1035     log test_cflags "$@"
1036     set -- $($cflags_filter "$@")
1037     check_cc "$@" <<EOF
1038 int x;
1039 EOF
1040 }
1041
1042 check_cflags(){
1043     log check_cflags "$@"
1044     test_cflags "$@" && add_cflags "$@"
1045 }
1046
1047 check_cxxflags(){
1048     log check_cxxflags "$@"
1049     set -- $($cflags_filter "$@")
1050     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1051 int x;
1052 EOF
1053 }
1054
1055 test_objcflags(){
1056     log test_objcflags "$@"
1057     set -- $($objcflags_filter "$@")
1058     check_objcc "$@" <<EOF
1059 int x;
1060 EOF
1061 }
1062
1063 check_objcflags(){
1064     log check_objcflags "$@"
1065     test_objcflags "$@" && add_objcflags "$@"
1066 }
1067
1068 test_ldflags(){
1069     log test_ldflags "$@"
1070     check_ld "cc" "$@" <<EOF
1071 int main(void){ return 0; }
1072 EOF
1073 }
1074
1075 check_ldflags(){
1076     log check_ldflags "$@"
1077     test_ldflags "$@" && add_ldflags "$@"
1078 }
1079
1080 test_stripflags(){
1081     log test_stripflags "$@"
1082     # call check_cc to get a fresh TMPO
1083     check_cc <<EOF
1084 int main(void) { return 0; }
1085 EOF
1086     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1087 }
1088
1089 check_stripflags(){
1090     log check_stripflags "$@"
1091     test_stripflags "$@" && add_stripflags "$@"
1092 }
1093
1094 check_header(){
1095     log check_header "$@"
1096     header=$1
1097     shift
1098     disable_safe $header
1099     check_cpp "$@" <<EOF && enable_safe $header
1100 #include <$header>
1101 int x;
1102 EOF
1103 }
1104
1105 check_header_objcc(){
1106     log check_header_objcc "$@"
1107     rm -f -- "$TMPO"
1108     header=$1
1109     shift
1110     disable_safe $header
1111     {
1112        echo "#include <$header>"
1113        echo "int main(void) { return 0; }"
1114     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1115 }
1116
1117 check_func(){
1118     log check_func "$@"
1119     func=$1
1120     shift
1121     disable $func
1122     check_ld "cc" "$@" <<EOF && enable $func
1123 extern int $func();
1124 int main(void){ $func(); }
1125 EOF
1126 }
1127
1128 check_complexfunc(){
1129     log check_complexfunc "$@"
1130     func=$1
1131     narg=$2
1132     shift 2
1133     test $narg = 2 && args="f, g" || args="f * I"
1134     disable $func
1135     check_ld "cc" "$@" <<EOF && enable $func
1136 #include <complex.h>
1137 #include <math.h>
1138 float foo(complex float f, complex float g) { return $func($args); }
1139 int main(void){ return (int) foo; }
1140 EOF
1141 }
1142
1143 check_mathfunc(){
1144     log check_mathfunc "$@"
1145     func=$1
1146     narg=$2
1147     shift 2
1148     test $narg = 2 && args="f, g" || args="f"
1149     disable $func
1150     check_ld "cc" "$@" <<EOF && enable $func
1151 #include <math.h>
1152 float foo(float f, float g) { return $func($args); }
1153 int main(void){ return (int) foo; }
1154 EOF
1155 }
1156
1157 check_func_headers(){
1158     log check_func_headers "$@"
1159     headers=$1
1160     funcs=$2
1161     shift 2
1162     {
1163         for hdr in $headers; do
1164             print_include $hdr
1165         done
1166         echo "#include <stdint.h>"
1167         for func in $funcs; do
1168             echo "long check_$func(void) { return (long) $func; }"
1169         done
1170         echo "int main(void) { int ret = 0;"
1171         # LTO could optimize out the test functions without this
1172         for func in $funcs; do
1173             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1174         done
1175         echo "return ret; }"
1176     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1177 }
1178
1179 check_class_headers_cpp(){
1180     log check_class_headers_cpp "$@"
1181     headers=$1
1182     classes=$2
1183     shift 2
1184     {
1185         for hdr in $headers; do
1186             echo "#include <$hdr>"
1187         done
1188         echo "int main(void) { "
1189         i=1
1190         for class in $classes; do
1191             echo "$class obj$i;"
1192             i=$(expr $i + 1)
1193         done
1194         echo "return 0; }"
1195     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1196 }
1197
1198 check_cpp_condition(){
1199     log check_cpp_condition "$@"
1200     header=$1
1201     condition=$2
1202     shift 2
1203     check_cpp "$@" <<EOF
1204 #include <$header>
1205 #if !($condition)
1206 #error "unsatisfied condition: $condition"
1207 #endif
1208 EOF
1209 }
1210
1211 test_cflags_cc(){
1212     log test_cflags_cc "$@"
1213     flags=$1
1214     header=$2
1215     condition=$3
1216     shift 3
1217     set -- $($cflags_filter "$flags")
1218     check_cc "$@" <<EOF
1219 #include <$header>
1220 #if !($condition)
1221 #error "unsatisfied condition: $condition"
1222 #endif
1223 EOF
1224 }
1225
1226 check_lib(){
1227     log check_lib "$@"
1228     name="$1"
1229     headers="$2"
1230     funcs="$3"
1231     shift 3
1232     disable $name
1233     check_func_headers "$headers" "$funcs" "$@" &&
1234         enable $name && add_extralibs "$@"
1235 }
1236
1237 check_lib_cpp(){
1238     log check_lib_cpp "$@"
1239     headers="$1"
1240     classes="$2"
1241     shift 2
1242     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1243 }
1244
1245 check_pkg_config(){
1246     log check_pkg_config "$@"
1247     pkg_version="$1"
1248     pkg="${1%% *}"
1249     headers="$2"
1250     funcs="$3"
1251     shift 3
1252     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1253     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1254     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1255     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1256         set_safe "${pkg}_cflags"    $pkg_cflags &&
1257         set_safe "${pkg}_extralibs" $pkg_libs
1258 }
1259
1260 check_exec(){
1261     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1262 }
1263
1264 check_exec_crash(){
1265     log check_exec_crash "$@"
1266     code=$(cat)
1267
1268     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1269     # are safe but may not be available everywhere.  Thus we use
1270     # raise(SIGTERM) instead.  The check is run in a subshell so we
1271     # can redirect the "Terminated" message from the shell.  SIGBUS
1272     # is not defined by standard C so it is used conditionally.
1273
1274     (check_exec "$@") >> $logfile 2>&1 <<EOF
1275 #include <signal.h>
1276 static void sighandler(int sig){
1277     raise(SIGTERM);
1278 }
1279 int foo(void){
1280     $code
1281 }
1282 int (*func_ptr)(void) = foo;
1283 int main(void){
1284     signal(SIGILL, sighandler);
1285     signal(SIGFPE, sighandler);
1286     signal(SIGSEGV, sighandler);
1287 #ifdef SIGBUS
1288     signal(SIGBUS, sighandler);
1289 #endif
1290     return func_ptr();
1291 }
1292 EOF
1293 }
1294
1295 check_type(){
1296     log check_type "$@"
1297     headers=$1
1298     type=$2
1299     shift 2
1300     disable_safe "$type"
1301     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1302 }
1303
1304 check_struct(){
1305     log check_struct "$@"
1306     headers=$1
1307     struct=$2
1308     member=$3
1309     shift 3
1310     disable_safe "${struct}_${member}"
1311     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1312         enable_safe "${struct}_${member}"
1313 }
1314
1315 check_builtin(){
1316     log check_builtin "$@"
1317     name=$1
1318     headers=$2
1319     builtin=$3
1320     shift 3
1321     disable "$name"
1322     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1323 }
1324
1325 check_compile_assert(){
1326     log check_compile_assert "$@"
1327     name=$1
1328     headers=$2
1329     condition=$3
1330     shift 3
1331     disable "$name"
1332     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1333 }
1334
1335 require(){
1336     log require "$@"
1337     name_version="$1"
1338     name="${1%% *}"
1339     headers="$2"
1340     func="$3"
1341     shift 3
1342     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1343 }
1344
1345 require_cpp(){
1346     name="$1"
1347     headers="$2"
1348     classes="$3"
1349     shift 3
1350     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1351 }
1352
1353 use_pkg_config(){
1354     log use_pkg_config "$@"
1355     pkg="$1"
1356     check_pkg_config "$@" || return 1
1357     add_cflags    $(get_safe "${pkg}_cflags")
1358     add_extralibs $(get_safe "${pkg}_extralibs")
1359 }
1360
1361 require_pkg_config(){
1362     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1363 }
1364
1365 hostcc_e(){
1366     eval printf '%s\\n' $HOSTCC_E
1367 }
1368
1369 hostcc_o(){
1370     eval printf '%s\\n' $HOSTCC_O
1371 }
1372
1373 check_host_cc(){
1374     log check_host_cc "$@"
1375     cat > $TMPC
1376     log_file $TMPC
1377     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1378 }
1379
1380 check_host_cpp(){
1381     log check_host_cpp "$@"
1382     cat > $TMPC
1383     log_file $TMPC
1384     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1385 }
1386
1387 check_host_cppflags(){
1388     log check_host_cppflags "$@"
1389     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1390 int x;
1391 EOF
1392 }
1393
1394 check_host_cflags(){
1395     log check_host_cflags "$@"
1396     set -- $($host_cflags_filter "$@")
1397     check_host_cc "$@" <<EOF && append host_cflags "$@"
1398 int x;
1399 EOF
1400 }
1401
1402 check_host_cpp_condition(){
1403     log check_host_cpp_condition "$@"
1404     header=$1
1405     condition=$2
1406     shift 2
1407     check_host_cpp "$@" <<EOF
1408 #include <$header>
1409 #if !($condition)
1410 #error "unsatisfied condition: $condition"
1411 #endif
1412 EOF
1413 }
1414
1415 cp_if_changed(){
1416     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1417     mkdir -p "$(dirname $2)"
1418     cp -f "$1" "$2"
1419 }
1420
1421 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1422 # system-dependent things.
1423
1424 AVCODEC_COMPONENTS="
1425     bsfs
1426     decoders
1427     encoders
1428     hwaccels
1429     parsers
1430 "
1431
1432 AVDEVICE_COMPONENTS="
1433     indevs
1434     outdevs
1435 "
1436 AVFILTER_COMPONENTS="
1437     filters
1438 "
1439 AVFORMAT_COMPONENTS="
1440     demuxers
1441     muxers
1442     protocols
1443 "
1444
1445 AVRESAMPLE_COMPONENTS=""
1446 AVUTIL_COMPONENTS=""
1447
1448 COMPONENT_LIST="
1449     $AVCODEC_COMPONENTS
1450     $AVDEVICE_COMPONENTS
1451     $AVFILTER_COMPONENTS
1452     $AVFORMAT_COMPONENTS
1453     $AVRESAMPLE_COMPONENTS
1454     $AVUTIL_COMPONENTS
1455 "
1456
1457 EXAMPLE_LIST="
1458     avio_dir_cmd_example
1459     avio_reading_example
1460     decode_audio_example
1461     decode_video_example
1462     demuxing_decoding_example
1463     encode_audio_example
1464     encode_video_example
1465     extract_mvs_example
1466     filter_audio_example
1467     filtering_audio_example
1468     filtering_video_example
1469     http_multiclient_example
1470     metadata_example
1471     muxing_example
1472     qsvdec_example
1473     remuxing_example
1474     resampling_audio_example
1475     scaling_video_example
1476     transcode_aac_example
1477     transcoding_example
1478 "
1479 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1480     bzlib
1481     iconv
1482     libxcb
1483     libxcb_shm
1484     libxcb_shape
1485     libxcb_xfixes
1486     lzma
1487     schannel
1488     sdl
1489     sdl2
1490     securetransport
1491     xlib
1492     zlib
1493 "
1494
1495 EXTERNAL_LIBRARY_GPL_LIST="
1496     avisynth
1497     frei0r
1498     libcdio
1499     librubberband
1500     libvidstab
1501     libx264
1502     libx265
1503     libxavs
1504     libxvid
1505 "
1506
1507 EXTERNAL_LIBRARY_NONFREE_LIST="
1508     decklink
1509     libfdk_aac
1510     openssl
1511 "
1512
1513 EXTERNAL_LIBRARY_VERSION3_LIST="
1514     gmp
1515     libopencore_amrnb
1516     libopencore_amrwb
1517     libvo_amrwbenc
1518 "
1519
1520 EXTERNAL_LIBRARY_GPLV3_LIST="
1521     libsmbclient
1522 "
1523
1524 EXTERNAL_LIBRARY_LIST="
1525     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1526     $EXTERNAL_LIBRARY_GPL_LIST
1527     $EXTERNAL_LIBRARY_NONFREE_LIST
1528     $EXTERNAL_LIBRARY_VERSION3_LIST
1529     $EXTERNAL_LIBRARY_GPLV3_LIST
1530     chromaprint
1531     crystalhd
1532     gcrypt
1533     gnutls
1534     jni
1535     ladspa
1536     libass
1537     libbluray
1538     libbs2b
1539     libcaca
1540     libcelt
1541     libdc1394
1542     libflite
1543     libfontconfig
1544     libfreetype
1545     libfribidi
1546     libgme
1547     libgsm
1548     libiec61883
1549     libilbc
1550     libkvazaar
1551     libmodplug
1552     libmp3lame
1553     libmysofa
1554     libopencv
1555     libopenh264
1556     libopenjpeg
1557     libopenmpt
1558     libopus
1559     libpulse
1560     librsvg
1561     librtmp
1562     libshine
1563     libsmbclient
1564     libsnappy
1565     libsoxr
1566     libspeex
1567     libssh
1568     libtesseract
1569     libtheora
1570     libtwolame
1571     libv4l2
1572     libvorbis
1573     libvpx
1574     libwavpack
1575     libwebp
1576     libzimg
1577     libzmq
1578     libzvbi
1579     mediacodec
1580     openal
1581     opencl
1582     opengl
1583     videotoolbox
1584 "
1585 HWACCEL_AUTODETECT_LIBRARY_LIST="
1586     audiotoolbox
1587     cuda
1588     cuvid
1589     d3d11va
1590     dxva2
1591     nvenc
1592     vaapi
1593     vda
1594     vdpau
1595     videotoolbox_hwaccel
1596     xvmc
1597 "
1598
1599 HWACCEL_LIBRARY_NONFREE_LIST="
1600     cuda_sdk
1601     libnpp
1602 "
1603
1604 HWACCEL_LIBRARY_LIST="
1605     $HWACCEL_AUTODETECT_LIBRARY_LIST
1606     $HWACCEL_LIBRARY_NONFREE_LIST
1607     libmfx
1608     mmal
1609     omx
1610 "
1611
1612 DOCUMENT_LIST="
1613     doc
1614     htmlpages
1615     manpages
1616     podpages
1617     txtpages
1618 "
1619
1620 FEATURE_LIST="
1621     ftrapv
1622     gray
1623     hardcoded_tables
1624     omx_rpi
1625     runtime_cpudetect
1626     safe_bitstream_reader
1627     shared
1628     small
1629     static
1630     swscale_alpha
1631 "
1632
1633 LIBRARY_LIST="
1634     avcodec
1635     avdevice
1636     avfilter
1637     avformat
1638     avresample
1639     avutil
1640     postproc
1641     swresample
1642     swscale
1643 "
1644
1645 LICENSE_LIST="
1646     gpl
1647     nonfree
1648     version3
1649 "
1650
1651 PROGRAM_LIST="
1652     ffplay
1653     ffprobe
1654     ffserver
1655     ffmpeg
1656 "
1657
1658 SUBSYSTEM_LIST="
1659     dct
1660     dwt
1661     error_resilience
1662     faan
1663     fast_unaligned
1664     fft
1665     lsp
1666     lzo
1667     mdct
1668     pixelutils
1669     network
1670     rdft
1671 "
1672
1673 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1674 CONFIG_LIST="
1675     $DOCUMENT_LIST
1676     $EXAMPLE_LIST
1677     $EXTERNAL_LIBRARY_LIST
1678     $HWACCEL_LIBRARY_LIST
1679     $FEATURE_LIST
1680     $LICENSE_LIST
1681     $LIBRARY_LIST
1682     $PROGRAM_LIST
1683     $SUBSYSTEM_LIST
1684     fontconfig
1685     memory_poisoning
1686     neon_clobber_test
1687     ossfuzz
1688     pic
1689     thumb
1690     valgrind_backtrace
1691     xmm_clobber_test
1692     $COMPONENT_LIST
1693 "
1694
1695 THREADS_LIST="
1696     pthreads
1697     os2threads
1698     w32threads
1699 "
1700
1701 ATOMICS_LIST="
1702     atomics_gcc
1703     atomics_suncc
1704     atomics_win32
1705 "
1706
1707 AUTODETECT_LIBS="
1708     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1709     $HWACCEL_AUTODETECT_LIBRARY_LIST
1710     $THREADS_LIST
1711 "
1712
1713 ARCH_LIST="
1714     aarch64
1715     alpha
1716     arm
1717     avr32
1718     avr32_ap
1719     avr32_uc
1720     bfin
1721     ia64
1722     m68k
1723     mips
1724     mips64
1725     parisc
1726     ppc
1727     ppc64
1728     s390
1729     sh4
1730     sparc
1731     sparc64
1732     tilegx
1733     tilepro
1734     tomi
1735     x86
1736     x86_32
1737     x86_64
1738 "
1739
1740 ARCH_EXT_LIST_ARM="
1741     armv5te
1742     armv6
1743     armv6t2
1744     armv8
1745     neon
1746     vfp
1747     vfpv3
1748     setend
1749 "
1750
1751 ARCH_EXT_LIST_MIPS="
1752     mipsfpu
1753     mips32r2
1754     mips32r5
1755     mips64r2
1756     mips32r6
1757     mips64r6
1758     mipsdsp
1759     mipsdspr2
1760     msa
1761 "
1762
1763 ARCH_EXT_LIST_LOONGSON="
1764     loongson2
1765     loongson3
1766     mmi
1767 "
1768
1769 ARCH_EXT_LIST_X86_SIMD="
1770     aesni
1771     amd3dnow
1772     amd3dnowext
1773     avx
1774     avx2
1775     fma3
1776     fma4
1777     mmx
1778     mmxext
1779     sse
1780     sse2
1781     sse3
1782     sse4
1783     sse42
1784     ssse3
1785     xop
1786 "
1787
1788 ARCH_EXT_LIST_PPC="
1789     altivec
1790     dcbzl
1791     ldbrx
1792     power8
1793     ppc4xx
1794     vsx
1795 "
1796
1797 ARCH_EXT_LIST_X86="
1798     $ARCH_EXT_LIST_X86_SIMD
1799     cpunop
1800     i686
1801 "
1802
1803 ARCH_EXT_LIST="
1804     $ARCH_EXT_LIST_ARM
1805     $ARCH_EXT_LIST_PPC
1806     $ARCH_EXT_LIST_X86
1807     $ARCH_EXT_LIST_MIPS
1808     $ARCH_EXT_LIST_LOONGSON
1809 "
1810
1811 ARCH_FEATURES="
1812     aligned_stack
1813     fast_64bit
1814     fast_clz
1815     fast_cmov
1816     local_aligned_8
1817     local_aligned_16
1818     local_aligned_32
1819     simd_align_16
1820     simd_align_32
1821 "
1822
1823 BUILTIN_LIST="
1824     atomic_cas_ptr
1825     machine_rw_barrier
1826     MemoryBarrier
1827     mm_empty
1828     rdtsc
1829     sarestart
1830     sem_timedwait
1831     sync_val_compare_and_swap
1832 "
1833 HAVE_LIST_CMDLINE="
1834     inline_asm
1835     symver
1836     x86asm
1837 "
1838
1839 HAVE_LIST_PUB="
1840     bigendian
1841     fast_unaligned
1842 "
1843
1844 HEADERS_LIST="
1845     alsa_asoundlib_h
1846     altivec_h
1847     arpa_inet_h
1848     asm_types_h
1849     cdio_paranoia_h
1850     cdio_paranoia_paranoia_h
1851     cuda_h
1852     d3d11_h
1853     dispatch_dispatch_h
1854     dev_bktr_ioctl_bt848_h
1855     dev_bktr_ioctl_meteor_h
1856     dev_ic_bt8xx_h
1857     dev_video_bktr_ioctl_bt848_h
1858     dev_video_meteor_ioctl_meteor_h
1859     direct_h
1860     dirent_h
1861     dlfcn_h
1862     dxva_h
1863     ES2_gl_h
1864     gsm_h
1865     io_h
1866     mach_mach_time_h
1867     machine_ioctl_bt848_h
1868     machine_ioctl_meteor_h
1869     malloc_h
1870     opencv2_core_core_c_h
1871     openjpeg_2_2_openjpeg_h
1872     openjpeg_2_1_openjpeg_h
1873     openjpeg_2_0_openjpeg_h
1874     openjpeg_1_5_openjpeg_h
1875     OpenGL_gl3_h
1876     poll_h
1877     sndio_h
1878     soundcard_h
1879     stdatomic_h
1880     sys_mman_h
1881     sys_param_h
1882     sys_resource_h
1883     sys_select_h
1884     sys_soundcard_h
1885     sys_time_h
1886     sys_un_h
1887     sys_videoio_h
1888     termios_h
1889     udplite_h
1890     unistd_h
1891     valgrind_valgrind_h
1892     windows_h
1893     winsock2_h
1894 "
1895
1896 INTRINSICS_LIST="
1897     intrinsics_neon
1898 "
1899
1900 COMPLEX_FUNCS="
1901     cabs
1902     cexp
1903 "
1904
1905 MATH_FUNCS="
1906     atanf
1907     atan2f
1908     cbrt
1909     cbrtf
1910     copysign
1911     cosf
1912     erf
1913     exp2
1914     exp2f
1915     expf
1916     hypot
1917     isfinite
1918     isinf
1919     isnan
1920     ldexpf
1921     llrint
1922     llrintf
1923     log2
1924     log2f
1925     log10f
1926     lrint
1927     lrintf
1928     powf
1929     rint
1930     round
1931     roundf
1932     sinf
1933     trunc
1934     truncf
1935 "
1936
1937 SYSTEM_FUNCS="
1938     access
1939     aligned_malloc
1940     arc4random
1941     clock_gettime
1942     closesocket
1943     CommandLineToArgvW
1944     CoTaskMemFree
1945     CryptGenRandom
1946     dlopen
1947     fcntl
1948     flt_lim
1949     fork
1950     getaddrinfo
1951     gethrtime
1952     getopt
1953     GetProcessAffinityMask
1954     GetProcessMemoryInfo
1955     GetProcessTimes
1956     getrusage
1957     GetSystemTimeAsFileTime
1958     gettimeofday
1959     glob
1960     glXGetProcAddress
1961     gmtime_r
1962     inet_aton
1963     isatty
1964     jack_port_get_latency_range
1965     kbhit
1966     LoadLibrary
1967     localtime_r
1968     lstat
1969     lzo1x_999_compress
1970     mach_absolute_time
1971     MapViewOfFile
1972     memalign
1973     mkstemp
1974     mmap
1975     mprotect
1976     nanosleep
1977     PeekNamedPipe
1978     posix_memalign
1979     pthread_cancel
1980     sched_getaffinity
1981     SetConsoleTextAttribute
1982     SetConsoleCtrlHandler
1983     setmode
1984     setrlimit
1985     Sleep
1986     strerror_r
1987     sysconf
1988     sysctl
1989     usleep
1990     UTGetOSTypeFromString
1991     VirtualAlloc
1992     wglGetProcAddress
1993 "
1994
1995 TOOLCHAIN_FEATURES="
1996     as_dn_directive
1997     as_fpu_directive
1998     as_func
1999     as_object_arch
2000     asm_mod_q
2001     attribute_may_alias
2002     attribute_packed
2003     blocks_extension
2004     ebp_available
2005     ebx_available
2006     gnu_as
2007     gnu_windres
2008     ibm_asm
2009     inline_asm_direct_symbol_refs
2010     inline_asm_labels
2011     inline_asm_nonlocal_labels
2012     pragma_deprecated
2013     rsync_contimeout
2014     symver_asm_label
2015     symver_gnu_asm
2016     vfp_args
2017     xform_asm
2018     xmm_clobbers
2019 "
2020
2021 TYPES_LIST="
2022     CONDITION_VARIABLE_Ptr
2023     socklen_t
2024     struct_addrinfo
2025     struct_group_source_req
2026     struct_ip_mreq_source
2027     struct_ipv6_mreq
2028     struct_msghdr_msg_flags
2029     struct_pollfd
2030     struct_rusage_ru_maxrss
2031     struct_sctp_event_subscribe
2032     struct_sockaddr_in6
2033     struct_sockaddr_sa_len
2034     struct_sockaddr_storage
2035     struct_stat_st_mtim_tv_nsec
2036     struct_v4l2_frmivalenum_discrete
2037 "
2038
2039 HAVE_LIST="
2040     $ARCH_EXT_LIST
2041     $(add_suffix _external $ARCH_EXT_LIST)
2042     $(add_suffix _inline   $ARCH_EXT_LIST)
2043     $ARCH_FEATURES
2044     $ATOMICS_LIST
2045     $BUILTIN_LIST
2046     $COMPLEX_FUNCS
2047     $HAVE_LIST_CMDLINE
2048     $HAVE_LIST_PUB
2049     $HEADERS_LIST
2050     $INTRINSICS_LIST
2051     $MATH_FUNCS
2052     $SYSTEM_FUNCS
2053     $THREADS_LIST
2054     $TOOLCHAIN_FEATURES
2055     $TYPES_LIST
2056     alsa
2057     atomics_native
2058     dos_paths
2059     dxva2_lib
2060     dxva2api_cobj
2061     jack
2062     libc_msvcrt
2063     makeinfo
2064     makeinfo_html
2065     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2066     perl
2067     pod2man
2068     sdl2
2069     section_data_rel_ro
2070     sndio
2071     texi2html
2072     threads
2073     vaapi_drm
2074     vaapi_x11
2075     vdpau_x11
2076     winrt
2077 "
2078
2079 # options emitted with CONFIG_ prefix but not available on the command line
2080 CONFIG_EXTRA="
2081     aandcttables
2082     ac3dsp
2083     audio_frame_queue
2084     audiodsp
2085     blockdsp
2086     bswapdsp
2087     cabac
2088     dirac_parse
2089     dvprofile
2090     exif
2091     faandct
2092     faanidct
2093     fdctdsp
2094     flacdsp
2095     fmtconvert
2096     frame_thread_encoder
2097     g722dsp
2098     golomb
2099     gplv3
2100     h263dsp
2101     h264chroma
2102     h264dsp
2103     h264parse
2104     h264pred
2105     h264qpel
2106     hevcparse
2107     hpeldsp
2108     huffman
2109     huffyuvdsp
2110     huffyuvencdsp
2111     idctdsp
2112     iirfilter
2113     mdct15
2114     intrax8
2115     iso_media
2116     ividsp
2117     jpegtables
2118     lgplv3
2119     libx262
2120     llauddsp
2121     llviddsp
2122     llvidencdsp
2123     lpc
2124     lzf
2125     me_cmp
2126     mpeg_er
2127     mpegaudio
2128     mpegaudiodsp
2129     mpegaudioheader
2130     mpegvideo
2131     mpegvideoenc
2132     mss34dsp
2133     pixblockdsp
2134     qpeldsp
2135     qsv
2136     qsvdec
2137     qsvenc
2138     rangecoder
2139     riffdec
2140     riffenc
2141     rtpdec
2142     rtpenc_chain
2143     rv34dsp
2144     sinewin
2145     snappy
2146     srtp
2147     startcode
2148     texturedsp
2149     texturedspenc
2150     tpeldsp
2151     vaapi_encode
2152     vc1dsp
2153     videodsp
2154     vp3dsp
2155     vp56dsp
2156     vp8dsp
2157     vt_bt2020
2158     wma_freqs
2159     wmv2dsp
2160 "
2161
2162 CMDLINE_SELECT="
2163     $ARCH_EXT_LIST
2164     $CONFIG_LIST
2165     $HAVE_LIST_CMDLINE
2166     $THREADS_LIST
2167     asm
2168     cross_compile
2169     debug
2170     extra_warnings
2171     logging
2172     lto
2173     optimizations
2174     rpath
2175     stripping
2176 "
2177
2178 PATHS_LIST="
2179     bindir
2180     datadir
2181     docdir
2182     incdir
2183     libdir
2184     mandir
2185     pkgconfigdir
2186     prefix
2187     shlibdir
2188     install_name_dir
2189 "
2190
2191 CMDLINE_SET="
2192     $PATHS_LIST
2193     ar
2194     arch
2195     as
2196     assert_level
2197     build_suffix
2198     cc
2199     objcc
2200     cpu
2201     cross_prefix
2202     custom_allocator
2203     cxx
2204     dep_cc
2205     doxygen
2206     env
2207     extra_version
2208     gas
2209     host_cc
2210     host_cflags
2211     host_extralibs
2212     host_ld
2213     host_ldflags
2214     host_os
2215     ignore_tests
2216     install
2217     ld
2218     ln_s
2219     logfile
2220     malloc_prefix
2221     nm
2222     optflags
2223     nvccflags
2224     pkg_config
2225     pkg_config_flags
2226     progs_suffix
2227     random_seed
2228     ranlib
2229     samples
2230     strip
2231     sws_max_filter_size
2232     sysinclude
2233     sysroot
2234     target_exec
2235     target_os
2236     target_path
2237     target_samples
2238     tempprefix
2239     toolchain
2240     valgrind
2241     x86asmexe
2242 "
2243
2244 CMDLINE_APPEND="
2245     extra_cflags
2246     extra_cxxflags
2247     extra_objcflags
2248     host_cppflags
2249 "
2250
2251 # code dependency declarations
2252
2253 # architecture extensions
2254
2255 armv5te_deps="arm"
2256 armv6_deps="arm"
2257 armv6t2_deps="arm"
2258 armv8_deps="aarch64"
2259 neon_deps_any="aarch64 arm"
2260 intrinsics_neon_deps="neon"
2261 vfp_deps_any="aarch64 arm"
2262 vfpv3_deps="vfp"
2263 setend_deps="arm"
2264
2265 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2266
2267 loongson2_deps="mips"
2268 loongson3_deps="mips"
2269 mipsfpu_deps="mips"
2270 mipsdsp_deps="mips"
2271 mipsdspr2_deps="mips"
2272 mips32r2_deps="mips"
2273 mips32r5_deps="mips"
2274 mips32r6_deps="mips"
2275 mips64r2_deps="mips"
2276 mips64r6_deps="mips"
2277 msa_deps="mipsfpu"
2278 mmi_deps="mips"
2279
2280 altivec_deps="ppc"
2281 dcbzl_deps="ppc"
2282 ldbrx_deps="ppc"
2283 ppc4xx_deps="ppc"
2284 vsx_deps="altivec"
2285 power8_deps="vsx"
2286
2287 cpunop_deps="i686"
2288 x86_64_select="i686"
2289 x86_64_suggest="fast_cmov"
2290
2291 amd3dnow_deps="mmx"
2292 amd3dnowext_deps="amd3dnow"
2293 i686_deps="x86"
2294 mmx_deps="x86"
2295 mmxext_deps="mmx"
2296 sse_deps="mmxext"
2297 sse2_deps="sse"
2298 sse3_deps="sse2"
2299 ssse3_deps="sse3"
2300 sse4_deps="ssse3"
2301 sse42_deps="sse4"
2302 aesni_deps="sse42"
2303 avx_deps="sse42"
2304 xop_deps="avx"
2305 fma3_deps="avx"
2306 fma4_deps="avx"
2307 avx2_deps="avx"
2308
2309 mmx_external_deps="x86asm"
2310 mmx_inline_deps="inline_asm"
2311 mmx_suggest="mmx_external mmx_inline"
2312
2313 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2314     eval dep=\$${ext}_deps
2315     eval ${ext}_external_deps='"${dep}_external"'
2316     eval ${ext}_inline_deps='"${dep}_inline"'
2317     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2318 done
2319
2320 aligned_stack_if_any="aarch64 ppc x86"
2321 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2322 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2323 fast_unaligned_if_any="aarch64 ppc x86"
2324 simd_align_16_if_any="altivec neon sse"
2325 simd_align_32_if_any="avx"
2326
2327 # system capabilities
2328 symver_if_any="symver_asm_label symver_gnu_asm"
2329 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2330
2331 # threading support
2332 atomics_gcc_if="sync_val_compare_and_swap"
2333 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2334 atomics_win32_if="MemoryBarrier"
2335 atomics_native_if_any="$ATOMICS_LIST"
2336 w32threads_deps="atomics_native"
2337 threads_if_any="$THREADS_LIST"
2338
2339 # subsystems
2340 dct_select="rdft"
2341 dirac_parse_select="golomb"
2342 error_resilience_select="me_cmp"
2343 faandct_deps="faan fdctdsp"
2344 faanidct_deps="faan idctdsp"
2345 h264dsp_select="startcode"
2346 hevcparse_select="golomb"
2347 frame_thread_encoder_deps="encoders threads"
2348 intrax8_select="blockdsp idctdsp"
2349 mdct_select="fft"
2350 mdct15_select="fft"
2351 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2352 mpeg_er_select="error_resilience"
2353 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2354 mpegaudiodsp_select="dct"
2355 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2356 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2357 vc1dsp_select="h264chroma qpeldsp startcode"
2358 rdft_select="fft"
2359
2360 # decoders / encoders
2361 aac_decoder_select="mdct15 mdct sinewin"
2362 aac_fixed_decoder_select="mdct sinewin"
2363 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2364 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2365 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2366 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2367 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2368 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2369 adpcm_g722_decoder_select="g722dsp"
2370 adpcm_g722_encoder_select="g722dsp"
2371 aic_decoder_select="golomb idctdsp"
2372 alac_encoder_select="lpc"
2373 als_decoder_select="bswapdsp"
2374 amrnb_decoder_select="lsp"
2375 amrwb_decoder_select="lsp"
2376 amv_decoder_select="sp5x_decoder exif"
2377 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2378 ape_decoder_select="bswapdsp llauddsp"
2379 apng_decoder_select="zlib"
2380 apng_encoder_select="llvidencdsp zlib"
2381 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2382 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2383 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2384 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2385 atrac1_decoder_select="mdct sinewin"
2386 atrac3_decoder_select="mdct"
2387 atrac3p_decoder_select="mdct sinewin"
2388 avrn_decoder_select="exif jpegtables"
2389 bink_decoder_select="blockdsp hpeldsp"
2390 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2391 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2392 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2393 clearvideo_decoder_select="idctdsp"
2394 cllc_decoder_select="bswapdsp"
2395 comfortnoise_encoder_select="lpc"
2396 cook_decoder_select="audiodsp mdct sinewin"
2397 cscd_decoder_select="lzo"
2398 cscd_decoder_suggest="zlib"
2399 dca_decoder_select="mdct"
2400 dds_decoder_select="texturedsp"
2401 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2402 dnxhd_decoder_select="blockdsp idctdsp"
2403 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2404 dvvideo_decoder_select="dvprofile idctdsp"
2405 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2406 dxa_decoder_select="zlib"
2407 dxv_decoder_select="lzf texturedsp"
2408 eac3_decoder_select="ac3_decoder"
2409 eac3_encoder_select="ac3_encoder"
2410 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2411 eatgq_decoder_select="aandcttables"
2412 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2413 exr_decoder_select="zlib"
2414 ffv1_decoder_select="rangecoder"
2415 ffv1_encoder_select="rangecoder"
2416 ffvhuff_decoder_select="huffyuv_decoder"
2417 ffvhuff_encoder_select="huffyuv_encoder"
2418 fic_decoder_select="golomb"
2419 flac_decoder_select="flacdsp"
2420 flac_encoder_select="bswapdsp flacdsp lpc"
2421 flashsv2_decoder_select="zlib"
2422 flashsv2_encoder_select="zlib"
2423 flashsv_decoder_select="zlib"
2424 flashsv_encoder_select="zlib"
2425 flv_decoder_select="h263_decoder"
2426 flv_encoder_select="h263_encoder"
2427 fourxm_decoder_select="blockdsp bswapdsp"
2428 fraps_decoder_select="bswapdsp huffman"
2429 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2430 g729_decoder_select="audiodsp"
2431 h261_decoder_select="mpegvideo"
2432 h261_encoder_select="aandcttables mpegvideoenc"
2433 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2434 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2435 h263i_decoder_select="h263_decoder"
2436 h263p_decoder_select="h263_decoder"
2437 h263p_encoder_select="h263_encoder"
2438 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2439 h264_decoder_suggest="error_resilience"
2440 hap_decoder_select="snappy texturedsp"
2441 hap_encoder_deps="libsnappy"
2442 hap_encoder_select="texturedspenc"
2443 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2444 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2445 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2446 iac_decoder_select="imc_decoder"
2447 imc_decoder_select="bswapdsp fft mdct sinewin"
2448 indeo3_decoder_select="hpeldsp"
2449 indeo4_decoder_select="ividsp"
2450 indeo5_decoder_select="ividsp"
2451 interplay_video_decoder_select="hpeldsp"
2452 jpegls_decoder_select="mjpeg_decoder"
2453 jv_decoder_select="blockdsp"
2454 lagarith_decoder_select="llviddsp"
2455 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2456 magicyuv_decoder_select="llviddsp"
2457 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2458 metasound_decoder_select="lsp mdct sinewin"
2459 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2460 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2461 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2462 mjpegb_decoder_select="mjpeg_decoder"
2463 mlp_decoder_select="mlp_parser"
2464 mlp_encoder_select="lpc"
2465 motionpixels_decoder_select="bswapdsp"
2466 mp1_decoder_select="mpegaudio"
2467 mp1float_decoder_select="mpegaudio"
2468 mp2_decoder_select="mpegaudio"
2469 mp2float_decoder_select="mpegaudio"
2470 mp3_decoder_select="mpegaudio"
2471 mp3adu_decoder_select="mpegaudio"
2472 mp3adufloat_decoder_select="mpegaudio"
2473 mp3float_decoder_select="mpegaudio"
2474 mp3on4_decoder_select="mpegaudio"
2475 mp3on4float_decoder_select="mpegaudio"
2476 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2477 mpc8_decoder_select="mpegaudiodsp"
2478 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2479 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2480 mpegvideo_decoder_select="mpegvideo"
2481 mpeg1video_decoder_select="mpegvideo"
2482 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2483 mpeg2video_decoder_select="mpegvideo"
2484 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2485 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2486 mpeg4_encoder_select="h263_encoder"
2487 msa1_decoder_select="mss34dsp"
2488 mscc_decoder_select="zlib"
2489 msmpeg4v1_decoder_select="h263_decoder"
2490 msmpeg4v2_decoder_select="h263_decoder"
2491 msmpeg4v2_encoder_select="h263_encoder"
2492 msmpeg4v3_decoder_select="h263_decoder"
2493 msmpeg4v3_encoder_select="h263_encoder"
2494 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2495 mts2_decoder_select="mss34dsp"
2496 mxpeg_decoder_select="mjpeg_decoder"
2497 nellymoser_decoder_select="mdct sinewin"
2498 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2499 nuv_decoder_select="idctdsp lzo"
2500 on2avc_decoder_select="mdct"
2501 opus_decoder_deps="swresample"
2502 opus_decoder_select="mdct15"
2503 opus_encoder_select="audio_frame_queue mdct15"
2504 png_decoder_select="zlib"
2505 png_encoder_select="llvidencdsp zlib"
2506 prores_decoder_select="blockdsp idctdsp"
2507 prores_encoder_select="fdctdsp"
2508 qcelp_decoder_select="lsp"
2509 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2510 ra_144_decoder_select="audiodsp"
2511 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2512 ralf_decoder_select="golomb"
2513 rawvideo_decoder_select="bswapdsp"
2514 rscc_decoder_select="zlib"
2515 rtjpeg_decoder_select="me_cmp"
2516 rv10_decoder_select="h263_decoder"
2517 rv10_encoder_select="h263_encoder"
2518 rv20_decoder_select="h263_decoder"
2519 rv20_encoder_select="h263_encoder"
2520 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2521 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2522 screenpresso_decoder_select="zlib"
2523 shorten_decoder_select="bswapdsp"
2524 sipr_decoder_select="lsp"
2525 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2526 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2527 sonic_decoder_select="golomb rangecoder"
2528 sonic_encoder_select="golomb rangecoder"
2529 sonic_ls_encoder_select="golomb rangecoder"
2530 sp5x_decoder_select="mjpeg_decoder"
2531 srgc_decoder_select="zlib"
2532 svq1_decoder_select="hpeldsp"
2533 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2534 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2535 svq3_decoder_suggest="zlib"
2536 tak_decoder_select="audiodsp"
2537 tdsc_decoder_select="zlib mjpeg_decoder"
2538 theora_decoder_select="vp3_decoder"
2539 thp_decoder_select="mjpeg_decoder"
2540 tiff_decoder_suggest="zlib lzma"
2541 tiff_encoder_suggest="zlib"
2542 truehd_decoder_select="mlp_parser"
2543 truehd_encoder_select="lpc"
2544 truemotion2_decoder_select="bswapdsp"
2545 truespeech_decoder_select="bswapdsp"
2546 tscc_decoder_select="zlib"
2547 twinvq_decoder_select="mdct lsp sinewin"
2548 txd_decoder_select="texturedsp"
2549 utvideo_decoder_select="bswapdsp llviddsp"
2550 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2551 vble_decoder_select="llviddsp"
2552 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2553 vc1_qsv_decoder_deps="libmfx"
2554 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2555 vc1image_decoder_select="vc1_decoder"
2556 vorbis_decoder_select="mdct"
2557 vorbis_encoder_select="mdct"
2558 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2559 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2560 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2561 vp6a_decoder_select="vp6_decoder"
2562 vp6f_decoder_select="vp6_decoder"
2563 vp7_decoder_select="h264pred videodsp vp8dsp"
2564 vp8_decoder_select="h264pred videodsp vp8dsp"
2565 vp9_decoder_select="videodsp vp9_parser"
2566 webp_decoder_select="vp8_decoder exif"
2567 wmalossless_decoder_select="llauddsp"
2568 wmapro_decoder_select="mdct sinewin wma_freqs"
2569 wmav1_decoder_select="mdct sinewin wma_freqs"
2570 wmav1_encoder_select="mdct sinewin wma_freqs"
2571 wmav2_decoder_select="mdct sinewin wma_freqs"
2572 wmav2_encoder_select="mdct sinewin wma_freqs"
2573 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2574 wmv1_decoder_select="h263_decoder"
2575 wmv1_encoder_select="h263_encoder"
2576 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2577 wmv2_encoder_select="h263_encoder wmv2dsp"
2578 wmv3_decoder_select="vc1_decoder"
2579 wmv3image_decoder_select="wmv3_decoder"
2580 xma1_decoder_select="wmapro_decoder"
2581 xma2_decoder_select="wmapro_decoder"
2582 zerocodec_decoder_select="zlib"
2583 zlib_decoder_select="zlib"
2584 zlib_encoder_select="zlib"
2585 zmbv_decoder_select="zlib"
2586 zmbv_encoder_select="zlib"
2587
2588 # platform codecs
2589 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2590 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2591
2592 # hardware accelerators
2593 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2594 cuda_deps_any="dlopen LoadLibrary"
2595 cuvid_deps="cuda"
2596 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2597 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2598 dxva2_extralibs="-luser32"
2599 dxva2_lib_deps="dxva2"
2600 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension"
2601 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2602 vda_deps="vda_framework pthreads"
2603 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2604 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2605 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2606 xvmc_deps="X11_extensions_XvMClib_h"
2607
2608 h263_vaapi_hwaccel_deps="vaapi"
2609 h263_vaapi_hwaccel_select="h263_decoder"
2610 h263_videotoolbox_hwaccel_deps="videotoolbox"
2611 h263_videotoolbox_hwaccel_select="h263_decoder"
2612 h264_cuvid_hwaccel_deps="cuda cuvid"
2613 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2614 h264_d3d11va_hwaccel_deps="d3d11va"
2615 h264_d3d11va_hwaccel_select="h264_decoder"
2616 h264_dxva2_hwaccel_deps="dxva2"
2617 h264_dxva2_hwaccel_select="h264_decoder"
2618 h264_mediacodec_hwaccel_deps="mediacodec"
2619 h264_mmal_hwaccel_deps="mmal"
2620 h264_qsv_hwaccel_deps="libmfx"
2621 h264_vaapi_hwaccel_deps="vaapi"
2622 h264_vaapi_hwaccel_select="h264_decoder"
2623 h264_vda_hwaccel_deps="vda"
2624 h264_vda_hwaccel_select="h264_decoder"
2625 h264_vda_old_hwaccel_deps="vda"
2626 h264_vda_old_hwaccel_select="h264_decoder"
2627 h264_vdpau_hwaccel_deps="vdpau"
2628 h264_vdpau_hwaccel_select="h264_decoder"
2629 h264_videotoolbox_hwaccel_deps="videotoolbox"
2630 h264_videotoolbox_hwaccel_select="h264_decoder"
2631 hevc_cuvid_hwaccel_deps="cuda cuvid"
2632 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2633 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2634 hevc_d3d11va_hwaccel_select="hevc_decoder"
2635 hevc_mediacodec_hwaccel_deps="mediacodec"
2636 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2637 hevc_dxva2_hwaccel_select="hevc_decoder"
2638 hevc_qsv_hwaccel_deps="libmfx"
2639 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2640 hevc_vaapi_hwaccel_select="hevc_decoder"
2641 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2642 hevc_vdpau_hwaccel_select="hevc_decoder"
2643 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2644 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2645 mpeg_xvmc_hwaccel_deps="xvmc"
2646 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2647 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2648 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2649 mpeg1_vdpau_hwaccel_deps="vdpau"
2650 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2651 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2652 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2653 mpeg1_xvmc_hwaccel_deps="xvmc"
2654 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2655 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2656 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2657 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2658 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2659 mpeg2_dxva2_hwaccel_deps="dxva2"
2660 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2661 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2662 mpeg2_mmal_hwaccel_deps="mmal"
2663 mpeg2_qsv_hwaccel_deps="libmfx"
2664 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2665 mpeg2_vaapi_hwaccel_deps="vaapi"
2666 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2667 mpeg2_vdpau_hwaccel_deps="vdpau"
2668 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2669 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2670 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2671 mpeg2_xvmc_hwaccel_deps="xvmc"
2672 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2673 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2674 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2675 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2676 mpeg4_mmal_hwaccel_deps="mmal"
2677 mpeg4_vaapi_hwaccel_deps="vaapi"
2678 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2679 mpeg4_vdpau_hwaccel_deps="vdpau"
2680 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2681 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2682 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2683 vc1_cuvid_hwaccel_deps="cuda cuvid"
2684 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2685 vc1_d3d11va_hwaccel_deps="d3d11va"
2686 vc1_d3d11va_hwaccel_select="vc1_decoder"
2687 vc1_dxva2_hwaccel_deps="dxva2"
2688 vc1_dxva2_hwaccel_select="vc1_decoder"
2689 vc1_mmal_hwaccel_deps="mmal"
2690 vc1_qsv_hwaccel_deps="libmfx"
2691 vc1_qsv_hwaccel_select="qsvdec_vc1"
2692 vc1_vaapi_hwaccel_deps="vaapi"
2693 vc1_vaapi_hwaccel_select="vc1_decoder"
2694 vc1_vdpau_hwaccel_deps="vdpau"
2695 vc1_vdpau_hwaccel_select="vc1_decoder"
2696 vp8_cuvid_hwaccel_deps="cuda cuvid"
2697 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2698 vp9_cuvid_hwaccel_deps="cuda cuvid"
2699 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2700 vp8_mediacodec_hwaccel_deps="mediacodec"
2701 vp8_qsv_hwaccel_deps="libmfx"
2702 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2703 vp9_d3d11va_hwaccel_select="vp9_decoder"
2704 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2705 vp9_dxva2_hwaccel_select="vp9_decoder"
2706 vp9_mediacodec_hwaccel_deps="mediacodec"
2707 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2708 vp9_vaapi_hwaccel_select="vp9_decoder"
2709 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2710 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2711 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2712 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2713
2714 # hardware-accelerated codecs
2715 omx_deps="dlopen pthreads"
2716 omx_extralibs='$ldl'
2717 omx_rpi_select="omx"
2718 qsvdec_select="qsv"
2719 qsvenc_select="qsv"
2720 vaapi_encode_deps="vaapi"
2721
2722 hwupload_cuda_filter_deps="cuda"
2723 scale_npp_filter_deps="cuda libnpp"
2724 scale_cuda_filter_deps="cuda_sdk"
2725
2726 nvenc_deps="cuda"
2727 nvenc_deps_any="dlopen LoadLibrary"
2728 nvenc_encoder_deps="nvenc"
2729
2730 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2731 h264_cuvid_decoder_deps="cuda cuvid"
2732 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2733 h264_mediacodec_decoder_deps="mediacodec"
2734 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2735 h264_mmal_decoder_deps="mmal"
2736 h264_nvenc_encoder_deps="nvenc"
2737 h264_omx_encoder_deps="omx"
2738 h264_qsv_decoder_deps="libmfx"
2739 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2740 h264_qsv_encoder_deps="libmfx"
2741 h264_qsv_encoder_select="qsvenc"
2742 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2743 h264_vaapi_encoder_select="vaapi_encode golomb"
2744 h264_vda_decoder_deps="vda"
2745 h264_vda_decoder_select="h264_decoder"
2746 h264_vdpau_decoder_deps="vdpau"
2747 h264_vdpau_decoder_select="h264_decoder"
2748 hevc_cuvid_decoder_deps="cuda cuvid"
2749 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2750 hevc_mediacodec_decoder_deps="mediacodec"
2751 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2752 hevc_nvenc_encoder_deps="nvenc"
2753 hevc_qsv_decoder_deps="libmfx"
2754 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2755 hevc_qsv_encoder_deps="libmfx"
2756 hevc_qsv_encoder_select="hevcparse qsvenc"
2757 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2758 hevc_vaapi_encoder_select="vaapi_encode golomb"
2759 mjpeg_cuvid_decoder_deps="cuda cuvid"
2760 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2761 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2762 mpeg1_cuvid_decoder_deps="cuda cuvid"
2763 mpeg1_vdpau_decoder_deps="vdpau"
2764 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2765 mpeg2_crystalhd_decoder_select="crystalhd"
2766 mpeg2_cuvid_decoder_deps="cuda cuvid"
2767 mpeg2_mmal_decoder_deps="mmal"
2768 mpeg2_mediacodec_decoder_deps="mediacodec"
2769 mpeg2_qsv_decoder_deps="libmfx"
2770 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2771 mpeg2_qsv_encoder_deps="libmfx"
2772 mpeg2_qsv_encoder_select="qsvenc"
2773 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2774 mpeg2_vaapi_encoder_select="vaapi_encode"
2775 mpeg4_crystalhd_decoder_select="crystalhd"
2776 mpeg4_cuvid_decoder_deps="cuda cuvid"
2777 mpeg4_mediacodec_decoder_deps="mediacodec"
2778 mpeg4_mmal_decoder_deps="mmal"
2779 mpeg4_omx_encoder_deps="omx"
2780 mpeg4_vdpau_decoder_deps="vdpau"
2781 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2782 mpeg_vdpau_decoder_deps="vdpau"
2783 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2784 msmpeg4_crystalhd_decoder_select="crystalhd"
2785 nvenc_h264_encoder_select="h264_nvenc_encoder"
2786 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2787 vc1_crystalhd_decoder_select="crystalhd"
2788 vc1_cuvid_decoder_deps="cuda cuvid"
2789 vc1_mmal_decoder_deps="mmal"
2790 vc1_vdpau_decoder_deps="vdpau"
2791 vc1_vdpau_decoder_select="vc1_decoder"
2792 vp8_cuvid_decoder_deps="cuda cuvid"
2793 vp8_mediacodec_decoder_deps="mediacodec"
2794 vp8_qsv_decoder_deps="libmfx"
2795 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2796 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2797 vp8_vaapi_encoder_select="vaapi_encode"
2798 vp9_cuvid_decoder_deps="cuda cuvid"
2799 vp9_mediacodec_decoder_deps="mediacodec"
2800 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2801 vp9_vaapi_encoder_select="vaapi_encode"
2802 wmv3_crystalhd_decoder_select="crystalhd"
2803 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2804
2805 # parsers
2806 h264_parser_select="golomb h264dsp h264parse"
2807 hevc_parser_select="hevcparse"
2808 mpegaudio_parser_select="mpegaudioheader"
2809 mpegvideo_parser_select="mpegvideo"
2810 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2811 vc1_parser_select="vc1dsp"
2812
2813 # bitstream_filters
2814 mjpeg2jpeg_bsf_select="jpegtables"
2815
2816 # external libraries
2817 aac_at_decoder_deps="audiotoolbox"
2818 ac3_at_decoder_deps="audiotoolbox"
2819 ac3_at_decoder_select="ac3_parser"
2820 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2821 alac_at_decoder_deps="audiotoolbox"
2822 amr_nb_at_decoder_deps="audiotoolbox"
2823 avisynth_deps_any="dlopen LoadLibrary"
2824 avisynth_demuxer_deps="avisynth"
2825 avisynth_demuxer_select="riffdec"
2826 eac3_at_decoder_deps="audiotoolbox"
2827 eac3_at_decoder_select="ac3_parser"
2828 gsm_ms_at_decoder_deps="audiotoolbox"
2829 ilbc_at_decoder_deps="audiotoolbox"
2830 mp1_at_decoder_deps="audiotoolbox"
2831 mp2_at_decoder_deps="audiotoolbox"
2832 mp3_at_decoder_deps="audiotoolbox"
2833 mp1_at_decoder_select="mpegaudioheader"
2834 mp2_at_decoder_select="mpegaudioheader"
2835 mp3_at_decoder_select="mpegaudioheader"
2836 pcm_alaw_at_decoder_deps="audiotoolbox"
2837 pcm_mulaw_at_decoder_deps="audiotoolbox"
2838 qdmc_at_decoder_deps="audiotoolbox"
2839 qdm2_at_decoder_deps="audiotoolbox"
2840 aac_at_encoder_deps="audiotoolbox"
2841 aac_at_encoder_select="audio_frame_queue"
2842 alac_at_encoder_deps="audiotoolbox"
2843 alac_at_encoder_select="audio_frame_queue"
2844 ilbc_at_encoder_deps="audiotoolbox"
2845 ilbc_at_encoder_select="audio_frame_queue"
2846 pcm_alaw_at_encoder_deps="audiotoolbox"
2847 pcm_alaw_at_encoder_select="audio_frame_queue"
2848 pcm_mulaw_at_encoder_deps="audiotoolbox"
2849 pcm_mulaw_at_encoder_select="audio_frame_queue"
2850 chromaprint_muxer_deps="chromaprint"
2851 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2852 libcelt_decoder_deps="libcelt"
2853 libfdk_aac_decoder_deps="libfdk_aac"
2854 libfdk_aac_encoder_deps="libfdk_aac"
2855 libfdk_aac_encoder_select="audio_frame_queue"
2856 libgme_demuxer_deps="libgme"
2857 libgsm_decoder_deps="libgsm"
2858 libgsm_encoder_deps="libgsm"
2859 libgsm_ms_decoder_deps="libgsm"
2860 libgsm_ms_encoder_deps="libgsm"
2861 libilbc_decoder_deps="libilbc"
2862 libilbc_encoder_deps="libilbc"
2863 libkvazaar_encoder_deps="libkvazaar"
2864 libmodplug_demuxer_deps="libmodplug"
2865 libmp3lame_encoder_deps="libmp3lame"
2866 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2867 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2868 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2869 libopencore_amrnb_encoder_select="audio_frame_queue"
2870 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2871 libopenh264_decoder_deps="libopenh264"
2872 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2873 libopenh264_encoder_deps="libopenh264"
2874 libopenjpeg_decoder_deps="libopenjpeg"
2875 libopenjpeg_encoder_deps="libopenjpeg"
2876 libopenmpt_demuxer_deps="libopenmpt"
2877 libopus_decoder_deps="libopus"
2878 libopus_encoder_deps="libopus"
2879 libopus_encoder_select="audio_frame_queue"
2880 librsvg_decoder_deps="librsvg"
2881 libshine_encoder_deps="libshine"
2882 libshine_encoder_select="audio_frame_queue"
2883 libspeex_decoder_deps="libspeex"
2884 libspeex_encoder_deps="libspeex"
2885 libspeex_encoder_select="audio_frame_queue"
2886 libtheora_encoder_deps="libtheora"
2887 libtwolame_encoder_deps="libtwolame"
2888 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2889 libvorbis_decoder_deps="libvorbis"
2890 libvorbis_encoder_deps="libvorbis"
2891 libvorbis_encoder_select="audio_frame_queue"
2892 libvpx_vp8_decoder_deps="libvpx"
2893 libvpx_vp8_encoder_deps="libvpx"
2894 libvpx_vp9_decoder_deps="libvpx"
2895 libvpx_vp9_encoder_deps="libvpx"
2896 libwavpack_encoder_deps="libwavpack"
2897 libwavpack_encoder_select="audio_frame_queue"
2898 libwebp_encoder_deps="libwebp"
2899 libwebp_anim_encoder_deps="libwebp"
2900 libx262_encoder_deps="libx262"
2901 libx264_encoder_deps="libx264"
2902 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2903 libx264rgb_encoder_select="libx264_encoder"
2904 libx265_encoder_deps="libx265"
2905 libxavs_encoder_deps="libxavs"
2906 libxvid_encoder_deps="libxvid"
2907 libzvbi_teletext_decoder_deps="libzvbi"
2908 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2909 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2910 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2911 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2912 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2913
2914 # demuxers / muxers
2915 ac3_demuxer_select="ac3_parser"
2916 aiff_muxer_select="iso_media"
2917 asf_demuxer_select="riffdec"
2918 asf_o_demuxer_select="riffdec"
2919 asf_muxer_select="riffenc"
2920 asf_stream_muxer_select="asf_muxer"
2921 avi_demuxer_select="iso_media riffdec exif"
2922 avi_muxer_select="riffenc"
2923 caf_demuxer_select="iso_media riffdec"
2924 caf_muxer_select="iso_media"
2925 dash_muxer_select="mp4_muxer"
2926 dirac_demuxer_select="dirac_parser"
2927 dts_demuxer_select="dca_parser"
2928 dtshd_demuxer_select="dca_parser"
2929 dv_demuxer_select="dvprofile"
2930 dv_muxer_select="dvprofile"
2931 dxa_demuxer_select="riffdec"
2932 eac3_demuxer_select="ac3_parser"
2933 f4v_muxer_select="mov_muxer"
2934 fifo_muxer_deps="threads"
2935 flac_demuxer_select="flac_parser"
2936 hds_muxer_select="flv_muxer"
2937 hls_muxer_select="mpegts_muxer"
2938 image2_alias_pix_demuxer_select="image2_demuxer"
2939 image2_brender_pix_demuxer_select="image2_demuxer"
2940 ipod_muxer_select="mov_muxer"
2941 ismv_muxer_select="mov_muxer"
2942 matroska_audio_muxer_select="matroska_muxer"
2943 matroska_demuxer_select="iso_media riffdec"
2944 matroska_demuxer_suggest="bzlib lzo zlib"
2945 matroska_muxer_select="iso_media riffenc"
2946 mmf_muxer_select="riffenc"
2947 mov_demuxer_select="iso_media riffdec"
2948 mov_demuxer_suggest="zlib"
2949 mov_muxer_select="iso_media riffenc rtpenc_chain"
2950 mp3_demuxer_select="mpegaudio_parser"
2951 mp3_muxer_select="mpegaudioheader"
2952 mp4_muxer_select="mov_muxer"
2953 mpegts_demuxer_select="iso_media"
2954 mpegts_muxer_select="adts_muxer latm_muxer"
2955 mpegtsraw_demuxer_select="mpegts_demuxer"
2956 mxf_d10_muxer_select="mxf_muxer"
2957 mxf_opatom_muxer_select="mxf_muxer"
2958 nut_muxer_select="riffenc"
2959 nuv_demuxer_select="riffdec"
2960 oga_muxer_select="ogg_muxer"
2961 ogg_demuxer_select="dirac_parse"
2962 ogv_muxer_select="ogg_muxer"
2963 opus_muxer_select="ogg_muxer"
2964 psp_muxer_select="mov_muxer"
2965 rtp_demuxer_select="sdp_demuxer"
2966 rtp_muxer_select="golomb"
2967 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2968 rtsp_demuxer_select="http_protocol rtpdec"
2969 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2970 sap_demuxer_select="sdp_demuxer"
2971 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2972 sdp_demuxer_select="rtpdec"
2973 smoothstreaming_muxer_select="ismv_muxer"
2974 spdif_muxer_select="aac_parser"
2975 spx_muxer_select="ogg_muxer"
2976 swf_demuxer_suggest="zlib"
2977 tak_demuxer_select="tak_parser"
2978 tg2_muxer_select="mov_muxer"
2979 tgp_muxer_select="mov_muxer"
2980 vobsub_demuxer_select="mpegps_demuxer"
2981 w64_demuxer_select="wav_demuxer"
2982 w64_muxer_select="wav_muxer"
2983 wav_demuxer_select="riffdec"
2984 wav_muxer_select="riffenc"
2985 webm_muxer_select="iso_media riffenc"
2986 webm_dash_manifest_demuxer_select="matroska_demuxer"
2987 wtv_demuxer_select="mpegts_demuxer riffdec"
2988 wtv_muxer_select="mpegts_muxer riffenc"
2989 xmv_demuxer_select="riffdec"
2990 xwma_demuxer_select="riffdec"
2991
2992 # indevs / outdevs
2993 alsa_indev_deps="alsa"
2994 alsa_outdev_deps="alsa"
2995 avfoundation_indev_deps="pthreads"
2996 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2997 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2998 caca_outdev_deps="libcaca"
2999 decklink_indev_deps="decklink threads"
3000 decklink_indev_extralibs="-lstdc++"
3001 decklink_outdev_deps="decklink threads"
3002 decklink_outdev_extralibs="-lstdc++"
3003 dshow_indev_deps="IBaseFilter"
3004 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3005 dv1394_indev_deps="dv1394"
3006 dv1394_indev_select="dv_demuxer"
3007 fbdev_indev_deps="linux_fb_h"
3008 fbdev_outdev_deps="linux_fb_h"
3009 gdigrab_indev_deps="CreateDIBSection"
3010 gdigrab_indev_extralibs="-lgdi32"
3011 gdigrab_indev_select="bmp_decoder"
3012 iec61883_indev_deps="libiec61883"
3013 jack_indev_deps="jack"
3014 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3015 lavfi_indev_deps="avfilter"
3016 libcdio_indev_deps="libcdio"
3017 libdc1394_indev_deps="libdc1394"
3018 libv4l2_indev_deps="libv4l2"
3019 openal_indev_deps="openal"
3020 opengl_outdev_deps="opengl"
3021 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3022 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3023 pulse_indev_deps="libpulse"
3024 pulse_outdev_deps="libpulse"
3025 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
3026 qtkit_indev_select="qtkit"
3027 sdl2_outdev_deps="sdl2"
3028 sndio_indev_deps="sndio"
3029 sndio_outdev_deps="sndio"
3030 v4l_indev_deps="linux_videodev_h"
3031 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3032 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3033 vfwcap_indev_deps="vfw32 vfwcap_defines"
3034 xcbgrab_indev_deps="libxcb"
3035 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3036 xv_outdev_extralibs="-lXv -lX11 -lXext"
3037
3038 # protocols
3039 async_protocol_deps="threads"
3040 bluray_protocol_deps="libbluray"
3041 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3042 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3043 ffrtmpcrypt_protocol_select="tcp_protocol"
3044 ffrtmphttp_protocol_deps="!librtmp_protocol"
3045 ffrtmphttp_protocol_select="http_protocol"
3046 ftp_protocol_select="tcp_protocol"
3047 gopher_protocol_select="network"
3048 http_protocol_select="tcp_protocol"
3049 httpproxy_protocol_select="tcp_protocol"
3050 https_protocol_select="tls_protocol"
3051 icecast_protocol_select="http_protocol"
3052 librtmp_protocol_deps="librtmp"
3053 librtmpe_protocol_deps="librtmp"
3054 librtmps_protocol_deps="librtmp"
3055 librtmpt_protocol_deps="librtmp"
3056 librtmpte_protocol_deps="librtmp"
3057 libsmbclient_protocol_deps="libsmbclient gplv3"
3058 libssh_protocol_deps="libssh"
3059 mmsh_protocol_select="http_protocol"
3060 mmst_protocol_select="network"
3061 rtmp_protocol_deps="!librtmp_protocol"
3062 rtmp_protocol_select="tcp_protocol"
3063 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3064 rtmps_protocol_deps="!librtmp_protocol"
3065 rtmps_protocol_select="tls_protocol"
3066 rtmpt_protocol_select="ffrtmphttp_protocol"
3067 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3068 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3069 rtp_protocol_select="udp_protocol"
3070 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3071 sctp_protocol_select="network"
3072 srtp_protocol_select="rtp_protocol srtp"
3073 tcp_protocol_select="network"
3074 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3075 tls_gnutls_protocol_select="tcp_protocol"
3076 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3077 tls_openssl_protocol_select="tcp_protocol"
3078 tls_schannel_protocol_deps="schannel"
3079 tls_schannel_protocol_select="tcp_protocol"
3080 tls_securetransport_protocol_deps="securetransport"
3081 tls_securetransport_protocol_select="tcp_protocol"
3082 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3083 udp_protocol_select="network"
3084 udplite_protocol_select="network"
3085 unix_protocol_deps="sys_un_h"
3086 unix_protocol_select="network"
3087
3088 # filters
3089 afftfilt_filter_deps="avcodec"
3090 afftfilt_filter_select="fft"
3091 afir_filter_deps="avcodec"
3092 afir_filter_select="fft"
3093 amovie_filter_deps="avcodec avformat"
3094 aresample_filter_deps="swresample"
3095 ass_filter_deps="libass"
3096 atempo_filter_deps="avcodec"
3097 atempo_filter_select="rdft"
3098 azmq_filter_deps="libzmq"
3099 blackframe_filter_deps="gpl"
3100 boxblur_filter_deps="gpl"
3101 bs2b_filter_deps="libbs2b"
3102 colormatrix_filter_deps="gpl"
3103 cover_rect_filter_deps="avcodec avformat gpl"
3104 cropdetect_filter_deps="gpl"
3105 deinterlace_qsv_filter_deps="libmfx"
3106 deinterlace_vaapi_filter_deps="vaapi"
3107 delogo_filter_deps="gpl"
3108 deshake_filter_select="pixelutils"
3109 drawtext_filter_deps="libfreetype"
3110 elbg_filter_deps="avcodec"
3111 eq_filter_deps="gpl"
3112 fftfilt_filter_deps="avcodec"
3113 fftfilt_filter_select="rdft"
3114 find_rect_filter_deps="avcodec avformat gpl"
3115 firequalizer_filter_deps="avcodec"
3116 firequalizer_filter_select="rdft"
3117 flite_filter_deps="libflite"
3118 framerate_filter_select="pixelutils"
3119 frei0r_filter_deps="frei0r dlopen"
3120 frei0r_src_filter_deps="frei0r dlopen"
3121 fspp_filter_deps="gpl"
3122 geq_filter_deps="gpl"
3123 histeq_filter_deps="gpl"
3124 hqdn3d_filter_deps="gpl"
3125 interlace_filter_deps="gpl"
3126 kerndeint_filter_deps="gpl"
3127 ladspa_filter_deps="ladspa dlopen"
3128 mcdeint_filter_deps="avcodec gpl"
3129 movie_filter_deps="avcodec avformat"
3130 mpdecimate_filter_deps="gpl"
3131 mpdecimate_filter_select="pixelutils"
3132 mptestsrc_filter_deps="gpl"
3133 negate_filter_deps="lut_filter"
3134 nnedi_filter_deps="gpl"
3135 ocr_filter_deps="libtesseract"
3136 ocv_filter_deps="libopencv"
3137 owdenoise_filter_deps="gpl"
3138 pan_filter_deps="swresample"
3139 perspective_filter_deps="gpl"
3140 phase_filter_deps="gpl"
3141 pp7_filter_deps="gpl"
3142 pp_filter_deps="gpl postproc"
3143 pullup_filter_deps="gpl"
3144 removelogo_filter_deps="avcodec avformat swscale"
3145 repeatfields_filter_deps="gpl"
3146 resample_filter_deps="avresample"
3147 rubberband_filter_deps="librubberband"
3148 sab_filter_deps="gpl swscale"
3149 scale2ref_filter_deps="swscale"
3150 scale_filter_deps="swscale"
3151 scale_qsv_filter_deps="libmfx"
3152 select_filter_select="pixelutils"
3153 showcqt_filter_deps="avcodec avformat swscale"
3154 showcqt_filter_select="fft"
3155 showfreqs_filter_deps="avcodec"
3156 showfreqs_filter_select="fft"
3157 showspectrum_filter_deps="avcodec"
3158 showspectrum_filter_select="fft"
3159 showspectrumpic_filter_deps="avcodec"
3160 showspectrumpic_filter_select="fft"
3161 signature_filter_deps="gpl avcodec avformat"
3162 smartblur_filter_deps="gpl swscale"
3163 sofalizer_filter_deps="libmysofa avcodec"
3164 sofalizer_filter_select="fft"
3165 spectrumsynth_filter_deps="avcodec"
3166 spectrumsynth_filter_select="fft"
3167 spp_filter_deps="gpl avcodec"
3168 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3169 stereo3d_filter_deps="gpl"
3170 subtitles_filter_deps="avformat avcodec libass"
3171 super2xsai_filter_deps="gpl"
3172 pixfmts_super2xsai_test_deps="super2xsai_filter"
3173 tinterlace_filter_deps="gpl"
3174 tinterlace_merge_test_deps="tinterlace_filter"
3175 tinterlace_pad_test_deps="tinterlace_filter"
3176 uspp_filter_deps="gpl avcodec"
3177 vaguedenoiser_filter_deps="gpl"
3178 vidstabdetect_filter_deps="libvidstab"
3179 vidstabtransform_filter_deps="libvidstab"
3180 zmq_filter_deps="libzmq"
3181 zoompan_filter_deps="swscale"
3182 zscale_filter_deps="libzimg"
3183 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3184
3185 # examples
3186 avio_dir_cmd_deps="avformat avutil"
3187 avio_reading_deps="avformat avcodec avutil"
3188 decode_audio_example_deps="avcodec avutil"
3189 decode_video_example_deps="avcodec avutil"
3190 demuxing_decoding_example_deps="avcodec avformat avutil"
3191 encode_audio_example_deps="avcodec avutil"
3192 encode_video_example_deps="avcodec avutil"
3193 extract_mvs_example_deps="avcodec avformat avutil"
3194 filter_audio_example_deps="avfilter avutil"
3195 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3196 filtering_video_example_deps="avfilter avcodec avformat avutil"
3197 http_multiclient_example_deps="avformat avutil fork"
3198 metadata_example_deps="avformat avutil"
3199 muxing_example_deps="avcodec avformat avutil swscale"
3200 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3201 remuxing_example_deps="avcodec avformat avutil"
3202 resampling_audio_example_deps="avutil swresample"
3203 scaling_video_example_deps="avutil swscale"
3204 transcode_aac_example_deps="avcodec avformat swresample"
3205 transcoding_example_deps="avfilter avcodec avformat avutil"
3206
3207 # libraries, in linking order
3208 avcodec_deps="avutil"
3209 avcodec_select="null_bsf"
3210 avdevice_deps="avformat avcodec avutil"
3211 avfilter_deps="avutil"
3212 avformat_deps="avcodec avutil"
3213 avresample_deps="avutil"
3214 postproc_deps="avutil gpl"
3215 swresample_deps="avutil"
3216 swscale_deps="avutil"
3217
3218 # programs
3219 ffmpeg_deps="avcodec avfilter avformat swresample"
3220 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3221                null_filter
3222                trim_filter"
3223 ffplay_deps="avcodec avformat swscale swresample sdl2"
3224 ffplay_extralibs='$sdl2_extralibs'
3225 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3226 ffprobe_deps="avcodec avformat"
3227 ffserver_deps="avformat fork sarestart"
3228 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3229
3230 # documentation
3231 podpages_deps="perl"
3232 manpages_deps="perl pod2man"
3233 htmlpages_deps="perl"
3234 htmlpages_deps_any="makeinfo_html texi2html"
3235 txtpages_deps="perl makeinfo"
3236 doc_deps_any="manpages htmlpages podpages txtpages"
3237
3238 # default parameters
3239
3240 logfile="ffbuild/config.log"
3241
3242 # installation paths
3243 prefix_default="/usr/local"
3244 bindir_default='${prefix}/bin'
3245 datadir_default='${prefix}/share/ffmpeg'
3246 docdir_default='${prefix}/share/doc/ffmpeg'
3247 incdir_default='${prefix}/include'
3248 libdir_default='${prefix}/lib'
3249 mandir_default='${prefix}/share/man'
3250
3251 # toolchain
3252 ar_default="ar"
3253 cc_default="gcc"
3254 cxx_default="g++"
3255 host_cc_default="gcc"
3256 doxygen_default="doxygen"
3257 install="install"
3258 ln_s_default="ln -s -f"
3259 nm_default="nm -g"
3260 pkg_config_default=pkg-config
3261 ranlib_default="ranlib"
3262 strip_default="strip"
3263 version_script='--version-script'
3264 x86asmexe_default="nasm"
3265 windres_default="windres"
3266 nvcc_default="nvcc"
3267 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3268
3269 # OS
3270 target_os_default=$(tolower $(uname -s))
3271 host_os=$target_os_default
3272
3273 # machine
3274 if test "$target_os_default" = aix; then
3275     arch_default=$(uname -p)
3276     strip_default="strip -X32_64"
3277 else
3278     arch_default=$(uname -m)
3279 fi
3280 cpu="generic"
3281 intrinsics="none"
3282
3283 # configurable options
3284 enable $PROGRAM_LIST
3285 enable $DOCUMENT_LIST
3286 enable $EXAMPLE_LIST
3287 enable $(filter_out avresample $LIBRARY_LIST)
3288 enable stripping
3289
3290 enable asm
3291 enable debug
3292 enable doc
3293 enable faan faandct faanidct
3294 enable optimizations
3295 enable runtime_cpudetect
3296 enable safe_bitstream_reader
3297 enable static
3298 enable swscale_alpha
3299 enable valgrind_backtrace
3300
3301 sws_max_filter_size_default=256
3302 set_default sws_max_filter_size
3303
3304 # build settings
3305 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3306 LIBPREF="lib"
3307 LIBSUF=".a"
3308 FULLNAME='$(NAME)$(BUILDSUF)'
3309 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3310 SLIBPREF="lib"
3311 SLIBSUF=".so"
3312 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3313 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3314 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3315 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3316 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3317 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3318 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3319
3320 asflags_filter=echo
3321 cflags_filter=echo
3322 ldflags_filter=echo
3323
3324 AS_C='-c'
3325 AS_O='-o $@'
3326 CC_C='-c'
3327 CC_E='-E -o $@'
3328 CC_O='-o $@'
3329 CXX_C='-c'
3330 CXX_O='-o $@'
3331 OBJCC_C='-c'
3332 OBJCC_E='-E -o $@'
3333 OBJCC_O='-o $@'
3334 X86ASM_O='-o $@'
3335 LD_O='-o $@'
3336 LD_LIB='-l%'
3337 LD_PATH='-L'
3338 HOSTCC_C='-c'
3339 HOSTCC_E='-E -o $@'
3340 HOSTCC_O='-o $@'
3341 HOSTLD_O='-o $@'
3342 NVCC_C='-c'
3343 NVCC_O='-o $@'
3344
3345 host_extralibs='-lm'
3346 host_cflags_filter=echo
3347 host_ldflags_filter=echo
3348
3349 target_path='$(CURDIR)'
3350
3351 # since the object filename is not given with the -MM flag, the compiler
3352 # is only able to print the basename, and we must add the path ourselves
3353 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3354 DEPFLAGS='-MM'
3355
3356 mkdir -p ffbuild
3357
3358 # find source path
3359 if test -f configure; then
3360     source_path=.
3361 else
3362     source_path=$(cd $(dirname "$0"); pwd)
3363     case "$source_path" in
3364         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3365     esac
3366     test -e "$source_path/config.h" &&
3367         die "Out of tree builds are impossible with config.h in source dir."
3368 fi
3369
3370 for v in "$@"; do
3371     r=${v#*=}
3372     l=${v%"$r"}
3373     r=$(sh_quote "$r")
3374     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3375 done
3376
3377 find_things(){
3378     thing=$1
3379     pattern=$2
3380     file=$source_path/$3
3381     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3382 }
3383
3384 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3385 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3386 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3387 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3388 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3389 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3390 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3391 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3392 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3393
3394 find_things_extern(){
3395     thing=$1
3396     pattern=$2
3397     file=$source_path/$3
3398     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3399 }
3400
3401 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3402 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3403
3404 ALL_COMPONENTS="
3405     $BSF_LIST
3406     $DECODER_LIST
3407     $DEMUXER_LIST
3408     $ENCODER_LIST
3409     $FILTER_LIST
3410     $HWACCEL_LIST
3411     $INDEV_LIST
3412     $MUXER_LIST
3413     $OUTDEV_LIST
3414     $PARSER_LIST
3415     $PROTOCOL_LIST
3416 "
3417
3418 for n in $COMPONENT_LIST; do
3419     v=$(toupper ${n%s})_LIST
3420     eval enable \$$v
3421     eval ${n}_if_any="\$$v"
3422 done
3423
3424 enable $ARCH_EXT_LIST
3425
3426 die_unknown(){
3427     echo "Unknown option \"$1\"."
3428     echo "See $0 --help for available options."
3429     exit 1
3430 }
3431
3432 print_in_columns() {
3433     cols=$(expr $ncols / 24)
3434     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3435 }
3436
3437 show_list() {
3438     suffix=_$1
3439     shift
3440     echo $* | sed s/$suffix//g | print_in_columns
3441     exit 0
3442 }
3443
3444 rand_list(){
3445     IFS=', '
3446     set -- $*
3447     unset IFS
3448     for thing; do
3449         comp=${thing%:*}
3450         prob=${thing#$comp}
3451         prob=${prob#:}
3452         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3453         echo "prob ${prob:-0.5}"
3454         printf '%s\n' $comp
3455     done
3456 }
3457
3458 do_random(){
3459     action=$1
3460     shift
3461     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3462     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3463 }
3464
3465 for opt do
3466     optval="${opt#*=}"
3467     case "$opt" in
3468         --extra-ldflags=*)
3469             add_ldflags $optval
3470         ;;
3471         --extra-ldexeflags=*)
3472             add_ldexeflags $optval
3473         ;;
3474         --extra-ldlibflags=*)
3475             add_ldlibflags $optval
3476         ;;
3477         --extra-libs=*)
3478             add_extralibs $optval
3479         ;;
3480         --disable-devices)
3481             disable $INDEV_LIST $OUTDEV_LIST
3482         ;;
3483         --enable-debug=*)
3484             debuglevel="$optval"
3485         ;;
3486         --disable-programs)
3487             disable $PROGRAM_LIST
3488         ;;
3489         --disable-everything)
3490             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3491         ;;
3492         --disable-all)
3493             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3494             disable $LIBRARY_LIST $PROGRAM_LIST doc
3495             enable avutil
3496         ;;
3497         --enable-random|--disable-random)
3498             action=${opt%%-random}
3499             do_random ${action#--} $COMPONENT_LIST
3500         ;;
3501         --enable-random=*|--disable-random=*)
3502             action=${opt%%-random=*}
3503             do_random ${action#--} $optval
3504         ;;
3505         --enable-*=*|--disable-*=*)
3506             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3507             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3508             eval list=\$$(toupper $thing)_LIST
3509             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3510             list=$(filter "$name" $list)
3511             [ "$list" = "" ] && warn "Option $opt did not match anything"
3512             $action $list
3513         ;;
3514         --enable-yasm|--disable-yasm)
3515             warn "The ${opt} option is only provided for compatibility and will be\n"\
3516                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3517             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3518         ;;
3519         --yasmexe=*)
3520             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3521                  "removed in the future. Use --x86asmexe instead."
3522             x86asmexe="$optval"
3523         ;;
3524         --enable-?*|--disable-?*)
3525             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3526             if is_in $option $COMPONENT_LIST; then
3527                 test $action = disable && action=unset
3528                 eval $action \$$(toupper ${option%s})_LIST
3529             elif is_in $option $CMDLINE_SELECT; then
3530                 $action $option
3531             else
3532                 die_unknown $opt
3533             fi
3534         ;;
3535         --list-*)
3536             NAME="${opt#--list-}"
3537             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3538             NAME=${NAME%s}
3539             eval show_list $NAME \$$(toupper $NAME)_LIST
3540         ;;
3541         --help|-h) show_help
3542         ;;
3543         --quiet|-q) quiet=yes
3544         ;;
3545         --fatal-warnings) enable fatal_warnings
3546         ;;
3547         --libfuzzer=*)
3548             libfuzzer_path="$optval"
3549         ;;
3550         *)
3551             optname="${opt%%=*}"
3552             optname="${optname#--}"
3553             optname=$(echo "$optname" | sed 's/-/_/g')
3554             if is_in $optname $CMDLINE_SET; then
3555                 eval $optname='$optval'
3556             elif is_in $optname $CMDLINE_APPEND; then
3557                 append $optname "$optval"
3558             else
3559                 die_unknown $opt
3560             fi
3561         ;;
3562     esac
3563 done
3564
3565 for e in $env; do
3566     eval "export $e"
3567 done
3568
3569 # Mark specifically enabled, but normally autodetected libraries as requested.
3570 for lib in $AUTODETECT_LIBS; do
3571     enabled $lib && request $lib
3572 done
3573
3574 # Enable platform codecs by default.
3575 enable_weak audiotoolbox
3576
3577 # Enable hwaccels by default.
3578 enable_weak d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3579 enable_weak xlib
3580
3581 enable_weak cuda cuvid nvenc vda_framework videotoolbox videotoolbox_encoder
3582
3583 disabled logging && logfile=/dev/null
3584
3585 die_license_disabled() {
3586     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3587 }
3588
3589 die_license_disabled_gpl() {
3590     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3591 }
3592
3593 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3594 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3595
3596 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3597 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3598
3599 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3600
3601 # Disable all the library-specific components if the library itself
3602 # is disabled, see AVCODEC_LIST and following _LIST variables.
3603
3604 disable_components(){
3605     disabled ${1} && disable $(
3606         eval components="\$$(toupper ${1})_COMPONENTS"
3607         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3608     )
3609 }
3610
3611 map 'disable_components $v' $LIBRARY_LIST
3612
3613 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3614 set >> $logfile
3615
3616 test -n "$valgrind" && toolchain="valgrind-memcheck"
3617
3618 enabled ossfuzz && {
3619     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3620     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3621 }
3622
3623 case "$toolchain" in
3624     *-asan)
3625         cc_default="${toolchain%-asan}"
3626         add_cflags  -fsanitize=address
3627         add_ldflags -fsanitize=address
3628     ;;
3629     *-msan)
3630         cc_default="${toolchain%-msan}"
3631         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3632         add_ldflags -fsanitize=memory
3633     ;;
3634     *-tsan)
3635         cc_default="${toolchain%-tsan}"
3636         add_cflags  -fsanitize=thread -fPIE
3637         add_ldflags -fsanitize=thread -pie
3638         case "$toolchain" in
3639             gcc-tsan)
3640                 add_cflags  -fPIC
3641                 add_ldflags -fPIC
3642                 ;;
3643         esac
3644     ;;
3645     *-usan)
3646         cc_default="${toolchain%-usan}"
3647         add_cflags  -fsanitize=undefined
3648         add_ldflags -fsanitize=undefined
3649     ;;
3650     valgrind-*)
3651         target_exec_default="valgrind"
3652         case "$toolchain" in
3653             valgrind-massif)
3654                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3655                 ;;
3656             valgrind-memcheck)
3657                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3658                 ;;
3659         esac
3660     ;;
3661     msvc)
3662         # Check whether the current MSVC version needs the C99 converter.
3663         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3664         # support enough of C99 to build ffmpeg. Default to the new
3665         # behaviour if the regexp was unable to match anything, since this
3666         # successfully parses the version number of existing supported
3667         # versions that require the converter (MSVC 2010 and 2012).
3668         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3669         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3670             cc_default="cl"
3671             cxx_default="cl"
3672         else
3673             cc_default="c99wrap cl"
3674             cxx_default="c99wrap cl"
3675         fi
3676         ld_default="$source_path/compat/windows/mslink"
3677         nm_default="dumpbin -symbols"
3678         ar_default="lib"
3679         case "$arch" in
3680         arm*)
3681             as_default="armasm"
3682             ;;
3683         esac
3684         target_os_default="win32"
3685         # Use a relative path for TMPDIR. This makes sure all the
3686         # ffconf temp files are written with a relative path, avoiding
3687         # issues with msys/win32 path conversion for MSVC parameters
3688         # such as -Fo<file> or -out:<file>.
3689         TMPDIR=.
3690     ;;
3691     icl)
3692         cc_default="icl"
3693         ld_default="xilink"
3694         nm_default="dumpbin -symbols"
3695         ar_default="xilib"
3696         target_os_default="win32"
3697         TMPDIR=.
3698     ;;
3699     gcov)
3700         add_cflags  -fprofile-arcs -ftest-coverage
3701         add_ldflags -fprofile-arcs -ftest-coverage
3702     ;;
3703     llvm-cov)
3704         add_cflags -fprofile-arcs -ftest-coverage
3705         add_ldflags --coverage
3706     ;;
3707     hardened)
3708         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3709         add_cflags   -fno-strict-overflow -fstack-protector-all
3710         add_ldflags  -Wl,-z,relro -Wl,-z,now
3711         add_cflags   -fPIE
3712         add_ldexeflags -fPIE -pie
3713     ;;
3714     ?*)
3715         die "Unknown toolchain $toolchain"
3716     ;;
3717 esac
3718
3719 test -n "$cross_prefix" && enable cross_compile
3720
3721 if enabled cross_compile; then
3722     test -n "$arch" && test -n "$target_os" ||
3723         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3724 fi
3725
3726 ar_default="${cross_prefix}${ar_default}"
3727 cc_default="${cross_prefix}${cc_default}"
3728 cxx_default="${cross_prefix}${cxx_default}"
3729 nm_default="${cross_prefix}${nm_default}"
3730 pkg_config_default="${cross_prefix}${pkg_config_default}"
3731 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3732     ranlib_default="${cross_prefix}${ranlib_default} -D"
3733 else
3734     ranlib_default="${cross_prefix}${ranlib_default}"
3735 fi
3736 strip_default="${cross_prefix}${strip_default}"
3737 windres_default="${cross_prefix}${windres_default}"
3738
3739 sysinclude_default="${sysroot}/usr/include"
3740
3741 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3742     target_exec target_os x86asmexe nvcc
3743 enabled cross_compile || host_cc_default=$cc
3744 set_default host_cc
3745
3746 pkg_config_fail_message=""
3747 if ! $pkg_config --version >/dev/null 2>&1; then
3748     warn "$pkg_config not found, library detection may fail."
3749     pkg_config=false
3750 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3751     pkg_config_fail_message="
3752 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3753 fi
3754
3755 if test $doxygen != $doxygen_default && \
3756   ! $doxygen --version >/dev/null 2>&1; then
3757     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3758 fi
3759
3760 exesuf() {
3761     case $1 in
3762         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3763     esac
3764 }
3765
3766 EXESUF=$(exesuf $target_os)
3767 HOSTEXESUF=$(exesuf $host_os)
3768
3769 # set temporary file name
3770 : ${TMPDIR:=$TEMPDIR}
3771 : ${TMPDIR:=$TMP}
3772 : ${TMPDIR:=/tmp}
3773
3774 if [ -n "$tempprefix" ] ; then
3775     mktemp(){
3776         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3777         echo "$tmpname"
3778         mkdir "$tmpname"
3779     }
3780 elif ! check_cmd mktemp -u XXXXXX; then
3781     # simple replacement for missing mktemp
3782     # NOT SAFE FOR GENERAL USE
3783     mktemp(){
3784         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3785         echo "$tmpname"
3786         mkdir "$tmpname"
3787     }
3788 fi
3789
3790 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3791     die "Unable to create temporary directory in $TMPDIR."
3792
3793 tmpfile(){
3794     tmp="${FFTMPDIR}/test"$2
3795     (set -C; exec > $tmp) 2> /dev/null ||
3796         die "Unable to create temporary file in $FFTMPDIR."
3797     eval $1=$tmp
3798 }
3799
3800 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3801 trap 'exit 2' INT
3802
3803 tmpfile TMPASM .asm
3804 tmpfile TMPC   .c
3805 tmpfile TMPCPP .cpp
3806 tmpfile TMPE   $EXESUF
3807 tmpfile TMPH   .h
3808 tmpfile TMPM   .m
3809 tmpfile TMPO   .o
3810 tmpfile TMPS   .S
3811 tmpfile TMPSH  .sh
3812 tmpfile TMPV   .ver
3813
3814 unset -f mktemp
3815
3816 chmod +x $TMPE
3817
3818 # make sure we can execute files in $TMPDIR
3819 cat > $TMPSH 2>> $logfile <<EOF
3820 #! /bin/sh
3821 EOF
3822 chmod +x $TMPSH >> $logfile 2>&1
3823 if ! $TMPSH >> $logfile 2>&1; then
3824     cat <<EOF
3825 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3826 variable to another directory and make sure that it is not mounted noexec.
3827 EOF
3828     die "Sanity test failed."
3829 fi
3830
3831 armasm_flags(){
3832     for flag; do
3833         case $flag in
3834             # Filter out MSVC cl.exe options from cflags that shouldn't
3835             # be passed to gas-preprocessor
3836             -M[TD]*)                                            ;;
3837             *)                  echo $flag                      ;;
3838         esac
3839    done
3840 }
3841
3842 ccc_flags(){
3843     for flag; do
3844         case $flag in
3845             -std=c99)           echo -c99                       ;;
3846             -mcpu=*)            echo -arch ${flag#*=}           ;;
3847             -mieee)             echo -ieee                      ;;
3848             -O*|-fast)          echo $flag                      ;;
3849             -fno-math-errno)    echo -assume nomath_errno       ;;
3850             -g)                 echo -g3                        ;;
3851             -Wall)              echo -msg_enable level2         ;;
3852             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3853             -Wl,*)              echo $flag                      ;;
3854             -f*|-W*)                                            ;;
3855             *)                  echo $flag                      ;;
3856         esac
3857    done
3858 }
3859
3860 cparser_flags(){
3861     for flag; do
3862         case $flag in
3863             -Wno-switch)             echo -Wno-switch-enum ;;
3864             -Wno-format-zero-length) ;;
3865             -Wdisabled-optimization) ;;
3866             -Wno-pointer-sign)       echo -Wno-other ;;
3867             *)                       echo $flag ;;
3868         esac
3869     done
3870 }
3871
3872 msvc_common_flags(){
3873     for flag; do
3874         case $flag in
3875             # In addition to specifying certain flags under the compiler
3876             # specific filters, they must be specified here as well or else the
3877             # generic catch all at the bottom will print the original flag.
3878             -Wall)                ;;
3879             -Wextra)              ;;
3880             -std=c99)             ;;
3881             # Common flags
3882             -fomit-frame-pointer) ;;
3883             -g)                   echo -Z7 ;;
3884             -fno-math-errno)      ;;
3885             -fno-common)          ;;
3886             -fno-signed-zeros)    ;;
3887             -fPIC)                ;;
3888             -mthumb)              ;;
3889             -march=*)             ;;
3890             -lz)                  echo zlib.lib ;;
3891             -lx264)               echo libx264.lib ;;
3892             -lstdc++)             ;;
3893             -l*)                  echo ${flag#-l}.lib ;;
3894             -LARGEADDRESSAWARE)   echo $flag ;;
3895             -L*)                  echo -libpath:${flag#-L} ;;
3896             *)                    echo $flag ;;
3897         esac
3898     done
3899 }
3900
3901 msvc_flags(){
3902     msvc_common_flags "$@"
3903     for flag; do
3904         case $flag in
3905             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3906                                        -wd4554 ;;
3907             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3908                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3909                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3910                                        -wd4307 \
3911                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3912         esac
3913     done
3914 }
3915
3916 icl_flags(){
3917     msvc_common_flags "$@"
3918     for flag; do
3919         case $flag in
3920             # Despite what Intel's documentation says -Wall, which is supported
3921             # on Windows, does enable remarks so disable them here.
3922             -Wall)                echo $flag -Qdiag-disable:remark ;;
3923             -std=c99)             echo -Qstd=c99 ;;
3924             -flto)                echo -ipo ;;
3925         esac
3926     done
3927 }
3928
3929 icc_flags(){
3930     for flag; do
3931         case $flag in
3932             -flto)                echo -ipo ;;
3933             *)                    echo $flag ;;
3934         esac
3935     done
3936 }
3937
3938 pgi_flags(){
3939     for flag; do
3940         case $flag in
3941             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3942             -fomit-frame-pointer) echo -Mnoframe ;;
3943             -g)                   echo -gopt ;;
3944             *)                    echo $flag ;;
3945         esac
3946     done
3947 }
3948
3949 suncc_flags(){
3950     for flag; do
3951         case $flag in
3952             -march=*|-mcpu=*)
3953                 case "${flag#*=}" in
3954                     native)                   echo -xtarget=native       ;;
3955                     v9|niagara)               echo -xarch=sparc          ;;
3956                     ultrasparc)               echo -xarch=sparcvis       ;;
3957                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3958                     i586|pentium)             echo -xchip=pentium        ;;
3959                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3960                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3961                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3962                     pentium4*)          echo -xtarget=pentium4           ;;
3963                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3964                     *-sse3)             echo -xarch=sse3                 ;;
3965                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3966                     bonnell)                   echo -xarch=ssse3         ;;
3967                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3968                     westmere)                  echo -xtarget=westmere    ;;
3969                     silvermont)                echo -xarch=sse4_2        ;;
3970                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3971                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3972                                                echo -xarch=avx           ;;
3973                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3974                     btver1)                    echo -xarch=amdsse4a      ;;
3975                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3976                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3977                     k8|opteron|athlon64|athlon-fx)
3978                                                echo -xarch=sse2a         ;;
3979                     athlon*)                   echo -xarch=pentium_proa  ;;
3980                 esac
3981                 ;;
3982             -std=c99)             echo -xc99              ;;
3983             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3984             -fPIC)                echo -KPIC -xcode=pic32 ;;
3985             -W*,*)                echo $flag              ;;
3986             -f*-*|-W*|-mimpure-text)                      ;;
3987             -shared)              echo -G                 ;;
3988             *)                    echo $flag              ;;
3989         esac
3990     done
3991 }
3992
3993 tms470_flags(){
3994     for flag; do
3995         case $flag in
3996             -march=*|-mcpu=*)
3997                 case "${flag#*=}" in
3998                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3999                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
4000                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
4001                     armv6*|arm11*)          echo -mv=6   ;;
4002                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
4003                                             echo -mv=5e  ;;
4004                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
4005                 esac
4006                 ;;
4007             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
4008             -mfpu=vfp)      echo --float_support=vfpv2        ;;
4009             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
4010             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
4011             -msoft-float)   echo --float_support=vfplib       ;;
4012             -O[0-3]|-mf=*)  echo $flag                        ;;
4013             -g)             echo -g -mn                       ;;
4014             -pds=*)         echo $flag                        ;;
4015             -D*|-I*)        echo $flag                        ;;
4016             --gcc|--abi=*)  echo $flag                        ;;
4017             -me)            echo $flag                        ;;
4018         esac
4019     done
4020 }
4021
4022 probe_cc(){
4023     pfx=$1
4024     _cc=$2
4025     first=$3
4026
4027     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4028     unset _ld_o _ldflags _ld_lib _ld_path
4029     unset _depflags _DEPCMD _DEPFLAGS
4030     _flags_filter=echo
4031
4032     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4033         true # no-op to avoid reading stdin in following checks
4034     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4035         _type=llvm_gcc
4036         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4037         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4038         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4039         _cflags_speed='-O3'
4040         _cflags_size='-Os'
4041     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4042         _type=gcc
4043         gcc_version=$($_cc --version | head -n1)
4044         gcc_basever=$($_cc -dumpversion)
4045         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4046         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4047         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4048         case $gcc_basever in
4049             2) ;;
4050             2.*) ;;
4051             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4052         esac
4053         if [ "$first" = true ]; then
4054             case $gcc_basever in
4055                 4.2*)
4056                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4057             esac
4058         fi
4059         _cflags_speed='-O3'
4060         _cflags_size='-Os'
4061     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4062         _type=icc
4063         _ident=$($_cc --version | head -n1)
4064         _depflags='-MMD'
4065         _cflags_speed='-O3'
4066         _cflags_size='-Os'
4067         _cflags_noopt='-O1'
4068         _flags_filter=icc_flags
4069     elif $_cc -v 2>&1 | grep -q xlc; then
4070         _type=xlc
4071         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4072         _cflags_speed='-O5'
4073         _cflags_size='-O5 -qcompact'
4074     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4075         _type=ccc
4076         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4077         _DEPFLAGS='-M'
4078         _cflags_speed='-fast'
4079         _cflags_size='-O1'
4080         _flags_filter=ccc_flags
4081     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4082         test -d "$sysroot" || die "No valid sysroot specified."
4083         _type=armcc
4084         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4085         armcc_conf="$PWD/armcc.conf"
4086         $_cc --arm_linux_configure                 \
4087              --arm_linux_config_file="$armcc_conf" \
4088              --configure_sysroot="$sysroot"        \
4089              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4090              die "Error creating armcc configuration file."
4091         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4092         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4093         as_default="${cross_prefix}gcc"
4094         _depflags='-MMD'
4095         _cflags_speed='-O3'
4096         _cflags_size='-Os'
4097     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4098         _type=tms470
4099         _ident=$($_cc -version | head -n1 | tr -s ' ')
4100         _flags='--gcc --abi=eabi -me'
4101         _cc_e='-ppl -fe=$@'
4102         _cc_o='-fe=$@'
4103         _depflags='-ppa -ppd=$(@:.o=.d)'
4104         _cflags_speed='-O3 -mf=5'
4105         _cflags_size='-O3 -mf=2'
4106         _flags_filter=tms470_flags
4107     elif $_cc -v 2>&1 | grep -q clang; then
4108         _type=clang
4109         _ident=$($_cc --version 2>/dev/null | head -n1)
4110         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4111         _cflags_speed='-O3'
4112         _cflags_size='-Oz'
4113     elif $_cc -V 2>&1 | grep -q Sun; then
4114         _type=suncc
4115         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4116         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4117         _DEPFLAGS='-xM1 -xc99'
4118         _ldflags='-std=c99'
4119         _cflags_speed='-O5'
4120         _cflags_size='-O5 -xspace'
4121         _flags_filter=suncc_flags
4122     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4123         _type=pathscale
4124         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4125         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4126         _cflags_speed='-O2'
4127         _cflags_size='-Os'
4128         _flags_filter='filter_out -Wdisabled-optimization'
4129     elif $_cc -v 2>&1 | grep -q Open64; then
4130         _type=open64
4131         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4132         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4133         _cflags_speed='-O2'
4134         _cflags_size='-Os'
4135         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4136     elif $_cc -V 2>&1 | grep -q Portland; then
4137         _type=pgi
4138         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4139         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4140         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4141         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4142         _cflags_noopt="-O"
4143         _flags_filter=pgi_flags
4144     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4145         _type=armasm
4146         _ident=$($_cc | head -n1)
4147         # 4509: "This form of conditional instruction is deprecated"
4148         _flags="-nologo -ignore 4509"
4149         _flags_filter=armasm_flags
4150     elif $_cc 2>&1 | grep -q Intel; then
4151         _type=icl
4152         _ident=$($_cc 2>&1 | head -n1)
4153         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4154         # Not only is O3 broken on 13.x+ but it is slower on all previous
4155         # versions (tested) as well.
4156         _cflags_speed="-O2"
4157         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4158         if $_cc 2>&1 | grep -q Linker; then
4159             _ld_o='-out:$@'
4160         else
4161             _ld_o='-Fe$@'
4162         fi
4163         _cc_o='-Fo$@'
4164         _cc_e='-P'
4165         _flags_filter=icl_flags
4166         _ld_lib='lib%.a'
4167         _ld_path='-libpath:'
4168         # -Qdiag-error to make icl error when seeing certain unknown arguments
4169         _flags='-nologo -Qdiag-error:4044,10157'
4170         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4171         # with MSVC which enables it by default.
4172         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4173         disable stripping
4174     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4175         # lld can emulate multiple different linkers; in ms link.exe mode,
4176         # the -? parameter gives the help output which contains an identifyable
4177         # string, while it gives an error in other modes.
4178         _type=lld-link
4179         # The link.exe mode doesn't have a switch for getting the version,
4180         # but we can force it back to gnu mode and get the version from there.
4181         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4182         _ld_o='-out:$@'
4183         _flags_filter=msvc_flags
4184         _ld_lib='lib%.a'
4185         _ld_path='-libpath:'
4186     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4187         _type=msvc
4188         _ident=$($_cc 2>&1 | head -n1)
4189         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4190         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4191         _cflags_speed="-O2"
4192         _cflags_size="-O1"
4193         _cflags_noopt="-O1"
4194         if $_cc -nologo- 2>&1 | grep -q Linker; then
4195             _ld_o='-out:$@'
4196         else
4197             _ld_o='-Fe$@'
4198         fi
4199         _cc_o='-Fo$@'
4200         _cc_e='-P -Fi$@'
4201         _flags_filter=msvc_flags
4202         _ld_lib='lib%.a'
4203         _ld_path='-libpath:'
4204         _flags='-nologo'
4205         disable stripping
4206     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4207         _type=cparser
4208         _ident=$($_cc --version | head -n1)
4209         _depflags='-MMD'
4210         _cflags_speed='-O4'
4211         _cflags_size='-O2'
4212         _flags_filter=cparser_flags
4213     fi
4214
4215     eval ${pfx}_type=\$_type
4216     eval ${pfx}_ident=\$_ident
4217 }
4218
4219 set_ccvars(){
4220     eval ${1}_C=\${_cc_c-\${${1}_C}}
4221     eval ${1}_E=\${_cc_e-\${${1}_E}}
4222     eval ${1}_O=\${_cc_o-\${${1}_O}}
4223
4224     if [ -n "$_depflags" ]; then
4225         eval ${1}_DEPFLAGS=\$_depflags
4226     else
4227         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4228         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4229         eval DEP${1}FLAGS=\$_flags
4230     fi
4231 }
4232
4233 probe_cc cc "$cc" "true"
4234 cflags_filter=$_flags_filter
4235 cflags_speed=$_cflags_speed
4236 cflags_size=$_cflags_size
4237 cflags_noopt=$_cflags_noopt
4238 add_cflags $_flags $_cflags
4239 cc_ldflags=$_ldflags
4240 set_ccvars CC
4241 set_ccvars CXX
4242
4243 probe_cc hostcc "$host_cc"
4244 host_cflags_filter=$_flags_filter
4245 host_cflags_speed=$_cflags_speed
4246 add_host_cflags  $_flags $_cflags
4247 set_ccvars HOSTCC
4248
4249 test -n "$cc_type" && enable $cc_type ||
4250     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4251
4252 : ${as_default:=$cc}
4253 : ${objcc_default:=$cc}
4254 : ${dep_cc_default:=$cc}
4255 : ${ld_default:=$cc}
4256 : ${host_ld_default:=$host_cc}
4257 set_default ar as objcc dep_cc ld ln_s host_ld windres
4258
4259 probe_cc as "$as"
4260 asflags_filter=$_flags_filter
4261 add_asflags $_flags $_cflags
4262 set_ccvars AS
4263
4264 probe_cc objcc "$objcc"
4265 objcflags_filter=$_flags_filter
4266 add_objcflags $_flags $_cflags
4267 set_ccvars OBJC
4268
4269 probe_cc ld "$ld"
4270 ldflags_filter=$_flags_filter
4271 add_ldflags $_flags $_ldflags
4272 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4273 LD_O=${_ld_o-$LD_O}
4274 LD_LIB=${_ld_lib-$LD_LIB}
4275 LD_PATH=${_ld_path-$LD_PATH}
4276
4277 probe_cc hostld "$host_ld"
4278 host_ldflags_filter=$_flags_filter
4279 add_host_ldflags $_flags $_ldflags
4280 HOSTLD_O=${_ld_o-$HOSTLD_O}
4281
4282 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4283     probe_cc depcc "$dep_cc"
4284     CCDEP=${_DEPCMD:-$DEPCMD}
4285     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4286     DEPCCFLAGS=$_flags
4287 fi
4288
4289 if $ar 2>&1 | grep -q Microsoft; then
4290     arflags="-nologo"
4291     ar_o='-out:$@'
4292 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4293     arflags="rq"
4294     ar_o='$@'
4295 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4296     arflags='-Xany -r -c'
4297     ar_o='$@'
4298 elif $ar 2>&1 | grep -q "\[D\] "; then
4299     arflags="rcD"
4300     ar_o='$@'
4301 else
4302     arflags="rc"
4303     ar_o='$@'
4304 fi
4305
4306 add_cflags $extra_cflags
4307 add_cxxflags $extra_cxxflags
4308 add_objcflags $extra_objcflags
4309 add_asflags $extra_cflags
4310
4311 if test -n "$sysroot"; then
4312     case "$cc_type" in
4313         gcc|llvm_gcc|clang)
4314             add_cppflags --sysroot="$sysroot"
4315             add_ldflags --sysroot="$sysroot"
4316 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4317             add_cppflags -isysroot "$sysroot"
4318             add_ldflags -isysroot "$sysroot"
4319         ;;
4320         tms470)
4321             add_cppflags -I"$sysinclude"
4322             add_ldflags  --sysroot="$sysroot"
4323         ;;
4324     esac
4325 fi
4326
4327 if test "$cpu" = host; then
4328     enabled cross_compile &&
4329         die "--cpu=host makes no sense when cross-compiling."
4330
4331     case "$cc_type" in
4332         gcc|llvm_gcc)
4333             check_native(){
4334                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4335                 sed -n "/cc1.*$1=/{
4336                             s/.*$1=\\([^ ]*\\).*/\\1/
4337                             p
4338                             q
4339                         }" $TMPE
4340             }
4341             cpu=$(check_native -march || check_native -mcpu)
4342         ;;
4343         clang)
4344             check_native(){
4345                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4346                 sed -n "/cc1.*-target-cpu /{
4347                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4348                             p
4349                             q
4350                         }" $TMPE
4351             }
4352             cpu=$(check_native -march)
4353         ;;
4354     esac
4355
4356     test "${cpu:-host}" = host &&
4357         die "--cpu=host not supported with compiler $cc"
4358 fi
4359
4360 # Deal with common $arch aliases
4361 case "$arch" in
4362     aarch64|arm64)
4363         arch="aarch64"
4364     ;;
4365     arm*|iPad*|iPhone*)
4366         arch="arm"
4367     ;;
4368     mips*|IP*)
4369         case "$arch" in
4370         *el)
4371             add_cppflags -EL
4372             add_ldflags -EL
4373         ;;
4374         *eb)
4375             add_cppflags -EB
4376             add_ldflags -EB
4377         ;;
4378         esac
4379         arch="mips"
4380     ;;
4381     parisc*|hppa*)
4382         arch="parisc"
4383     ;;
4384     "Power Macintosh"|ppc*|powerpc*)
4385         arch="ppc"
4386     ;;
4387     s390|s390x)
4388         arch="s390"
4389     ;;
4390     sh4|sh)
4391         arch="sh4"
4392     ;;
4393     sun4*|sparc*)
4394         arch="sparc"
4395     ;;
4396     tilegx|tile-gx)
4397         arch="tilegx"
4398     ;;
4399     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4400         arch="x86"
4401     ;;
4402 esac
4403
4404 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4405 enable $arch
4406
4407 # Add processor-specific flags
4408 if enabled aarch64; then
4409
4410     case $cpu in
4411         armv*)
4412             cpuflags="-march=$cpu"
4413         ;;
4414         *)
4415             cpuflags="-mcpu=$cpu"
4416         ;;
4417     esac
4418
4419 elif enabled alpha; then
4420
4421     cpuflags="-mcpu=$cpu"
4422
4423 elif enabled arm; then
4424
4425     check_arm_arch() {
4426         check_cpp_condition stddef.h \
4427             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4428             $cpuflags
4429     }
4430
4431     probe_arm_arch() {
4432         if   check_arm_arch 4;        then echo armv4
4433         elif check_arm_arch 4T;       then echo armv4t
4434         elif check_arm_arch 5;        then echo armv5
4435         elif check_arm_arch 5E;       then echo armv5e
4436         elif check_arm_arch 5T;       then echo armv5t
4437         elif check_arm_arch 5TE;      then echo armv5te
4438         elif check_arm_arch 5TEJ;     then echo armv5te
4439         elif check_arm_arch 6;        then echo armv6
4440         elif check_arm_arch 6J;       then echo armv6j
4441         elif check_arm_arch 6K;       then echo armv6k
4442         elif check_arm_arch 6Z;       then echo armv6z
4443         elif check_arm_arch 6ZK;      then echo armv6zk
4444         elif check_arm_arch 6T2;      then echo armv6t2
4445         elif check_arm_arch 7;        then echo armv7
4446         elif check_arm_arch 7A  7_A;  then echo armv7-a
4447         elif check_arm_arch 7S;       then echo armv7-a
4448         elif check_arm_arch 7R  7_R;  then echo armv7-r
4449         elif check_arm_arch 7M  7_M;  then echo armv7-m
4450         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4451         elif check_arm_arch 8A  8_A;  then echo armv8-a
4452         fi
4453     }
4454
4455     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4456
4457     case $cpu in
4458         armv*)
4459             cpuflags="-march=$cpu"
4460             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4461         ;;
4462         *)
4463             cpuflags="-mcpu=$cpu"
4464             case $cpu in
4465                 cortex-a*)                               subarch=armv7a  ;;
4466                 cortex-r*)                               subarch=armv7r  ;;
4467                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4468                 arm11*)                                  subarch=armv6   ;;
4469                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4470                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4471                 *)                             subarch=$(probe_arm_arch) ;;
4472             esac
4473         ;;
4474     esac
4475
4476     case "$subarch" in
4477         armv5t*)    enable fast_clz                ;;
4478         armv[6-8]*)
4479             enable fast_clz
4480             disabled fast_unaligned || enable fast_unaligned
4481             ;;
4482     esac
4483
4484 elif enabled avr32; then
4485
4486     case $cpu in
4487         ap7[02]0[0-2])
4488             subarch="avr32_ap"
4489             cpuflags="-mpart=$cpu"
4490         ;;
4491         ap)
4492             subarch="avr32_ap"
4493             cpuflags="-march=$cpu"
4494         ;;
4495         uc3[ab]*)
4496             subarch="avr32_uc"
4497             cpuflags="-mcpu=$cpu"
4498         ;;
4499         uc)
4500             subarch="avr32_uc"
4501             cpuflags="-march=$cpu"
4502         ;;
4503     esac
4504
4505 elif enabled bfin; then
4506
4507     cpuflags="-mcpu=$cpu"
4508
4509 elif enabled mips; then
4510
4511     cpuflags="-march=$cpu"
4512
4513     if [ "$cpu" != "generic" ]; then
4514         disable mips32r2
4515         disable mips32r5
4516         disable mips64r2
4517         disable mips32r6
4518         disable mips64r6
4519         disable loongson2
4520         disable loongson3
4521
4522         case $cpu in
4523             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4524                 enable mips32r2
4525                 disable msa
4526             ;;
4527             p5600|i6400|p6600)
4528                 disable mipsdsp
4529                 disable mipsdspr2
4530             ;;
4531             loongson*)
4532                 enable loongson2
4533                 enable loongson3
4534                 enable local_aligned_8 local_aligned_16 local_aligned_32
4535                 enable simd_align_16
4536                 enable fast_64bit
4537                 enable fast_clz
4538                 enable fast_cmov
4539                 enable fast_unaligned
4540                 disable aligned_stack
4541                 disable mipsfpu
4542                 disable mipsdsp
4543                 disable mipsdspr2
4544                 case $cpu in
4545                     loongson3*)
4546                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4547                     ;;
4548                     loongson2e)
4549                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4550                     ;;
4551                     loongson2f)
4552                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4553                     ;;
4554                 esac
4555             ;;
4556             *)
4557                 # Unknown CPU. Disable everything.
4558                 warn "unknown CPU. Disabling all MIPS optimizations."
4559                 disable mipsfpu
4560                 disable mipsdsp
4561                 disable mipsdspr2
4562                 disable msa
4563                 disable mmi
4564             ;;
4565         esac
4566
4567         case $cpu in
4568             24kc)
4569                 disable mipsfpu
4570                 disable mipsdsp
4571                 disable mipsdspr2
4572             ;;
4573             24kf*)
4574                 disable mipsdsp
4575                 disable mipsdspr2
4576             ;;
4577             24kec|34kc|1004kc)
4578                 disable mipsfpu
4579                 disable mipsdspr2
4580             ;;
4581             24kef*|34kf*|1004kf*)
4582                 disable mipsdspr2
4583             ;;
4584             74kc)
4585                 disable mipsfpu
4586             ;;
4587             p5600)
4588                 enable mips32r5
4589                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4590             ;;
4591             i6400)
4592                 enable mips64r6
4593                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4594             ;;
4595             p6600)
4596                 enable mips64r6
4597                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4598             ;;
4599         esac
4600     else
4601         # We do not disable anything. Is up to the user to disable the unwanted features.
4602         warn 'generic cpu selected'
4603     fi
4604
4605 elif enabled ppc; then
4606
4607     disable ldbrx
4608
4609     case $(tolower $cpu) in
4610         601|ppc601|powerpc601)
4611             cpuflags="-mcpu=601"
4612             disable altivec
4613         ;;
4614         603*|ppc603*|powerpc603*)
4615             cpuflags="-mcpu=603"
4616             disable altivec
4617         ;;
4618         604*|ppc604*|powerpc604*)
4619             cpuflags="-mcpu=604"
4620             disable altivec
4621         ;;
4622         g3|75*|ppc75*|powerpc75*)
4623             cpuflags="-mcpu=750"
4624             disable altivec
4625         ;;
4626         g4|745*|ppc745*|powerpc745*)
4627             cpuflags="-mcpu=7450"
4628             disable vsx
4629         ;;
4630         74*|ppc74*|powerpc74*)
4631             cpuflags="-mcpu=7400"
4632             disable vsx
4633         ;;
4634         g5|970|ppc970|powerpc970)
4635             cpuflags="-mcpu=970"
4636             disable vsx
4637         ;;
4638         power[3-6]*)
4639             cpuflags="-mcpu=$cpu"
4640             disable vsx
4641         ;;
4642         power[7-8]*)
4643             cpuflags="-mcpu=$cpu"
4644         ;;
4645         cell)
4646             cpuflags="-mcpu=cell"
4647             enable ldbrx
4648             disable vsx
4649         ;;
4650         e500mc)
4651             cpuflags="-mcpu=e500mc"
4652             disable altivec
4653         ;;
4654         e500v2)
4655             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4656             disable altivec
4657             disable dcbzl
4658         ;;
4659         e500)
4660             cpuflags="-mcpu=8540 -mhard-float"
4661             disable altivec
4662             disable dcbzl
4663         ;;
4664     esac
4665
4666 elif enabled sparc; then
4667
4668     case $cpu in
4669         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4670             cpuflags="-mcpu=$cpu"
4671         ;;
4672         ultrasparc*|niagara[234])
4673             cpuflags="-mcpu=$cpu"
4674         ;;
4675     esac
4676
4677 elif enabled x86; then
4678
4679     case $cpu in
4680         i[345]86|pentium)
4681             cpuflags="-march=$cpu"
4682             disable i686
4683             disable mmx
4684         ;;
4685         # targets that do NOT support nopl and conditional mov (cmov)
4686         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4687             cpuflags="-march=$cpu"
4688             disable i686
4689         ;;
4690         # targets that do support nopl and conditional mov (cmov)
4691         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4692         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4693         |amdfam10|barcelona|b[dt]ver*|znver*)
4694             cpuflags="-march=$cpu"
4695             enable i686
4696             enable fast_cmov
4697         ;;
4698         # targets that do support conditional mov but on which it's slow
4699         pentium4|pentium4m|prescott|nocona)
4700             cpuflags="-march=$cpu"
4701             enable i686
4702             disable fast_cmov
4703         ;;
4704     esac
4705
4706 fi
4707
4708 if [ "$cpu" != generic ]; then
4709     add_cflags  $cpuflags
4710     add_asflags $cpuflags
4711     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4712 fi
4713
4714 # compiler sanity check
4715 check_exec <<EOF
4716 int main(void){ return 0; }
4717 EOF
4718 if test "$?" != 0; then
4719     echo "$cc is unable to create an executable file."
4720     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4721         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4722         echo "Only do this if you know what cross compiling means."
4723     fi
4724     die "C compiler test failed."
4725 fi
4726
4727 add_cppflags -D_ISOC99_SOURCE
4728 add_cxxflags -D__STDC_CONSTANT_MACROS
4729 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4730
4731 # some compilers silently accept -std=c11, so we also need to check that the
4732 # version macro is defined properly
4733 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4734     add_cflags -std=c11
4735 else
4736     check_cflags -std=c99
4737 fi
4738
4739 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4740 #include <stdlib.h>
4741 EOF
4742 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4743 #include <stdlib.h>
4744 EOF
4745
4746 add_host_cppflags -D_ISOC99_SOURCE
4747 check_host_cflags -std=c99
4748 check_host_cflags -Wall
4749 check_host_cflags $host_cflags_speed
4750
4751 check_64bit(){
4752     arch32=$1
4753     arch64=$2
4754     expr=$3
4755     check_code cc "" "int test[2*($expr) - 1]" &&
4756         subarch=$arch64 || subarch=$arch32
4757 }
4758
4759 case "$arch" in
4760     aarch64|alpha|ia64)
4761         spic=$shared
4762     ;;
4763     mips)
4764         check_64bit mips mips64 '_MIPS_SIM > 1'
4765         spic=$shared
4766     ;;
4767     parisc)
4768         check_64bit parisc parisc64 'sizeof(void *) > 4'
4769         spic=$shared
4770     ;;
4771     ppc)
4772         check_64bit ppc ppc64 'sizeof(void *) > 4'
4773         spic=$shared
4774     ;;
4775     s390)
4776         check_64bit s390 s390x 'sizeof(void *) > 4'
4777         spic=$shared
4778     ;;
4779     sparc)
4780         check_64bit sparc sparc64 'sizeof(void *) > 4'
4781         spic=$shared
4782     ;;
4783     x86)
4784         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4785         # Treat x32 as x64 for now. Note it also needs spic=$shared
4786         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4787             subarch=x86_64
4788         if test "$subarch" = "x86_64"; then
4789             spic=$shared
4790         fi
4791     ;;
4792     ppc)
4793         check_cc <<EOF && subarch="ppc64"
4794         int test[(int)sizeof(char*) - 7];
4795 EOF
4796     ;;
4797 esac
4798
4799 enable $subarch
4800 enabled spic && enable_weak pic
4801
4802 enabled x86_64 && objformat=elf64 || objformat="elf32"
4803
4804 # OS specific
4805 case $target_os in
4806     aix)
4807         SHFLAGS=-shared
4808         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4809         enabled shared && add_ldflags -Wl,-brtl
4810         ;;
4811     android)
4812         disable symver
4813         enable section_data_rel_ro
4814         SLIB_INSTALL_NAME='$(SLIBNAME)'
4815         SLIB_INSTALL_LINKS=
4816         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4817         ;;
4818     haiku)
4819         prefix_default="/boot/common"
4820         network_extralibs="-lnetwork"
4821         host_extralibs=
4822         ;;
4823     sunos)
4824         SHFLAGS='-shared -Wl,-h,$$(@F)'
4825         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4826         network_extralibs="-lsocket -lnsl"
4827         add_cppflags -D__EXTENSIONS__
4828         # When using suncc to build, the Solaris linker will mark
4829         # an executable with each instruction set encountered by
4830         # the Solaris assembler.  As our libraries contain their own
4831         # guards for processor-specific code, instead suppress
4832         # generation of the HWCAPS ELF section on Solaris x86 only.
4833         enabled_all suncc x86 &&
4834             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4835             add_ldflags -Wl,-M,mapfile
4836         nm_default='nm -P -g'
4837         version_script='-M'
4838         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4839         ;;
4840     netbsd)
4841         disable symver
4842         oss_indev_extralibs="-lossaudio"
4843         oss_outdev_extralibs="-lossaudio"
4844         enabled gcc || check_ldflags -Wl,-zmuldefs
4845         ;;
4846     openbsd|bitrig)
4847         disable symver
4848         SHFLAGS='-shared'
4849         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4850         SLIB_INSTALL_LINKS=
4851         oss_indev_extralibs="-lossaudio"
4852         oss_outdev_extralibs="-lossaudio"
4853         ;;
4854     dragonfly)
4855         disable symver
4856         ;;
4857     freebsd)
4858         ;;
4859     bsd/os)
4860         add_extralibs -lpoll -lgnugetopt
4861         strip="strip -d"
4862         ;;
4863     darwin)
4864         enabled ppc && add_asflags -force_cpusubtype_ALL
4865         install_name_dir_default='$(SHLIBDIR)'
4866         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4867         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4868         strip="${strip} -x"
4869         add_ldflags -Wl,-dynamic,-search_paths_first
4870         SLIBSUF=".dylib"
4871         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4872         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4873         objformat="macho"
4874         enabled x86_64 && objformat="macho64" || objformat="macho32"
4875         enabled_any pic shared x86_64 ||
4876             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4877         check_header dispatch/dispatch.h &&
4878             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4879         version_script='-exported_symbols_list'
4880         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4881         ;;
4882     msys*)
4883         die "Native MSYS builds are discouraged, please use the MINGW environment."
4884         ;;
4885     mingw32*|mingw64*)
4886         if test $target_os = "mingw32ce"; then
4887             disable network
4888         else
4889             target_os=mingw32
4890         fi
4891         LIBTARGET=i386
4892         if enabled x86_64; then
4893             LIBTARGET="i386:x86-64"
4894         elif enabled arm; then
4895             LIBTARGET=arm-wince
4896         fi
4897         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4898         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4899         shlibdir_default="$bindir_default"
4900         SLIBPREF=""
4901         SLIBSUF=".dll"
4902         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4903         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4904         dlltool="${cross_prefix}dlltool"
4905         if check_cmd lib.exe -list; then
4906             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4907             if enabled x86_64; then
4908                 LIBTARGET=x64
4909             fi
4910         elif check_cmd $dlltool --version; then
4911             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4912         fi
4913         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4914         SLIB_INSTALL_LINKS=
4915         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4916         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4917         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4918         enabled x86_64 && objformat="win64" || objformat="win32"
4919         ranlib=:
4920         enable dos_paths
4921         check_ldflags -Wl,--nxcompat,--dynamicbase
4922         # Lets work around some stupidity in binutils.
4923         # ld will strip relocations from executables even though we need them
4924         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4925         # however ld then forgets what the entry point should be (oops) so we
4926         # have to manually (re)set it.
4927         if enabled x86_32; then
4928             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4929         elif enabled x86_64; then
4930             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4931             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4932             # Set image base >4GB for extra entropy with HEASLR
4933             add_ldexeflags -Wl,--image-base,0x140000000
4934             append SHFLAGS -Wl,--image-base,0x180000000
4935         fi
4936         ;;
4937     win32|win64)
4938         disable symver
4939         if enabled shared; then
4940             # Link to the import library instead of the normal static library
4941             # for shared libs.
4942             LD_LIB='%.lib'
4943             # Cannot build both shared and static libs with MSVC or icl.
4944             disable static
4945         fi
4946         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4947         shlibdir_default="$bindir_default"
4948         SLIBPREF=""
4949         SLIBSUF=".dll"
4950         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4951         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4952         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4953         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4954         SLIB_INSTALL_LINKS=
4955         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4956         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4957         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4958         enabled x86_64 && objformat="win64" || objformat="win32"
4959         ranlib=:
4960         enable dos_paths
4961         ;;
4962     cygwin*)
4963         target_os=cygwin
4964         shlibdir_default="$bindir_default"
4965         SLIBPREF="cyg"
4966         SLIBSUF=".dll"
4967         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4968         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4969         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4970         SLIB_INSTALL_LINKS=
4971         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4972         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4973         enabled x86_64 && objformat="win64" || objformat="win32"
4974         enable dos_paths
4975         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4976         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4977         ;;
4978     *-dos|freedos|opendos)
4979         network_extralibs="-lsocket"
4980         objformat="coff"
4981         enable dos_paths
4982         add_cppflags -U__STRICT_ANSI__
4983         ;;
4984     linux)
4985         enable dv1394
4986         enable section_data_rel_ro
4987         ;;
4988     irix*)
4989         target_os=irix
4990         ranlib="echo ignoring ranlib"
4991         ;;
4992     os/2*)
4993         strip="lxlite -CS"
4994         objformat="aout"
4995         add_cppflags -D_GNU_SOURCE
4996         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
4997         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4998         LIBSUF="_s.a"
4999         SLIBPREF=""
5000         SLIBSUF=".dll"
5001         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5002         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5003         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5004             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5005             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5006             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5007             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5008         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5009             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5010         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5011         SLIB_INSTALL_LINKS=
5012         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5013         enable dos_paths
5014         enable_weak os2threads
5015         ;;
5016     gnu/kfreebsd)
5017         add_cppflags -D_BSD_SOURCE
5018         ;;
5019     gnu)
5020         ;;
5021     qnx)
5022         add_cppflags -D_QNX_SOURCE
5023         network_extralibs="-lsocket"
5024         ;;
5025     symbian)
5026         SLIBSUF=".dll"
5027         enable dos_paths
5028         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5029         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5030         add_ldflags -Wl,--target1-abs,--no-undefined \
5031                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5032                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5033         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5034                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5035                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5036         ;;
5037     osf1)
5038         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
5039         ;;
5040     minix)
5041         ;;
5042     none)
5043         ;;
5044     *)
5045         die "Unknown OS '$target_os'."
5046         ;;
5047 esac
5048
5049 # test if creating links works
5050 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5051 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5052 mkdir "$link_dest"
5053 $ln_s "$link_dest" "$link_name"
5054 touch "$link_dest/test_file"
5055 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5056     # create link to source path
5057     [ -e src ] && rm src
5058     $ln_s "$source_path" src
5059     source_link=src
5060 else
5061     # creating directory links doesn't work
5062     # fall back to using the full source path
5063     source_link="$source_path"
5064 fi
5065 # cleanup
5066 rm -r "$link_dest"
5067 rm -r "$link_name"
5068
5069 # determine libc flavour
5070
5071 probe_libc(){
5072     pfx=$1
5073     pfx_no_=${pfx%_}
5074     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5075     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5076         eval ${pfx}libc_type=uclibc
5077         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5078     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5079         eval ${pfx}libc_type=glibc
5080         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5081     # MinGW headers can be installed on Cygwin, so check for newlib first.
5082     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5083         eval ${pfx}libc_type=newlib
5084         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5085     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5086     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5087         eval ${pfx}libc_type=mingw64
5088         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5089             add_compat msvcrt/snprintf.o
5090             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5091         fi
5092         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5093         eval test \$${pfx_no_}cc_type = "gcc" &&
5094             add_${pfx}cppflags -D__printf__=__gnu_printf__
5095     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5096          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5097         eval ${pfx}libc_type=mingw32
5098         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5099             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5100             die "ERROR: MinGW32 runtime version must be >= 3.15."
5101         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5102         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5103             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5104         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5105             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5106         eval test \$${pfx_no_}cc_type = "gcc" &&
5107             add_${pfx}cppflags -D__printf__=__gnu_printf__
5108     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5109         eval ${pfx}libc_type=msvcrt
5110         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5111             if [ "$pfx" = host_ ]; then
5112                 add_host_cppflags -Dsnprintf=_snprintf
5113             else
5114                 add_compat strtod.o strtod=avpriv_strtod
5115                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5116                                              _snprintf=avpriv_snprintf  \
5117                                              vsnprintf=avpriv_vsnprintf
5118             fi
5119         fi
5120         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5121         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5122         # 0x601 by default unless something else is set by the user.
5123         # This can easily lead to us detecting functions only present
5124         # in such new versions and producing binaries requiring windows 7.0.
5125         # Therefore explicitly set the default to XP unless the user has
5126         # set something else on the command line.
5127         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5128         # family. For these cases, configure is free to use any functions
5129         # found in the SDK headers by default. (Alternatively, we could force
5130         # _WIN32_WINNT to 0x0602 in that case.)
5131         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5132             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5133 #ifdef WINAPI_FAMILY
5134 #include <winapifamily.h>
5135 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5136 #error not desktop
5137 #endif
5138 #endif
5139 EOF
5140         if [ "$pfx" = "" ]; then
5141             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5142             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5143         fi
5144     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5145         eval ${pfx}libc_type=klibc
5146     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5147         eval ${pfx}libc_type=bionic
5148     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5149         eval ${pfx}libc_type=solaris
5150         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5151     fi
5152     check_${pfx}cc <<EOF
5153 #include <time.h>
5154 void *v = localtime_r;
5155 EOF
5156 test "$?" != 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
5157 #include <time.h>
5158 void *v = localtime_r;
5159 EOF
5160
5161 }
5162
5163 probe_libc
5164 test -n "$libc_type" && enable libc_$libc_type
5165 probe_libc host_
5166 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5167
5168 case $libc_type in
5169     bionic)
5170         add_compat strtod.o strtod=avpriv_strtod
5171         ;;
5172 esac
5173
5174 # hacks for compiler/libc/os combinations
5175
5176 if enabled_all tms470 libc_glibc; then
5177     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5178     add_cppflags -D__USER_LABEL_PREFIX__=
5179     add_cppflags -D__builtin_memset=memset
5180     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5181     add_cflags   -pds=48    # incompatible redefinition of macro
5182 fi
5183
5184 if enabled_all ccc libc_glibc; then
5185     add_ldflags -Wl,-z,now  # calls to libots crash without this
5186 fi
5187
5188 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5189     add_cppflags '-I\$(SRC_PATH)/compat/float'
5190
5191 esc(){
5192     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5193 }
5194
5195 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
5196
5197 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5198
5199 set_default libdir
5200 : ${shlibdir_default:="$libdir"}
5201 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5202
5203 set_default $PATHS_LIST
5204 set_default nm
5205
5206 # we need to build at least one lib type
5207 if ! enabled_any static shared; then
5208     cat <<EOF
5209 At least one library type must be built.
5210 Specify --enable-static to build the static libraries or --enable-shared to
5211 build the shared libraries as well. To only build the shared libraries specify
5212 --disable-static in addition to --enable-shared.
5213 EOF
5214     exit 1
5215 fi
5216
5217 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5218
5219 enable_weak_pic() {
5220     disabled pic && return
5221     enable pic
5222     add_cppflags -DPIC
5223     case "$target_os" in
5224     mingw*|cygwin*)
5225         ;;
5226     *)
5227         add_cflags -fPIC
5228         ;;
5229     esac
5230     add_asflags  -fPIC
5231 }
5232
5233 enabled pic && enable_weak_pic
5234
5235 check_cc <<EOF || die "Symbol mangling check failed."
5236 int ff_extern;
5237 EOF
5238 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5239 extern_prefix=${sym%%ff_extern*}
5240
5241 check_cc <<EOF && enable_weak inline_asm
5242 void foo(void) { __asm__ volatile ("" ::); }
5243 EOF
5244
5245 _restrict=
5246 for restrict_keyword in restrict __restrict__ __restrict; do
5247     check_cc <<EOF && _restrict=$restrict_keyword && break
5248 void foo(char * $restrict_keyword p);
5249 EOF
5250 done
5251
5252 check_cc <<EOF && enable pragma_deprecated
5253 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5254 EOF
5255
5256 check_cc <<EOF && enable attribute_packed
5257 struct { int x; } __attribute__((packed)) x;
5258 EOF
5259
5260 check_cc <<EOF && enable attribute_may_alias
5261 union { int x; } __attribute__((may_alias)) x;
5262 EOF
5263
5264 check_cc <<EOF || die "endian test failed"
5265 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5266 EOF
5267 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5268
5269 if ! enabled ppc64 || enabled bigendian; then
5270     disable vsx
5271 fi
5272
5273 check_gas() {
5274     log "check_gas using '$as' as AS"
5275     # :vararg is used on aarch64, arm and ppc altivec
5276     check_as <<EOF || return 1
5277 .macro m n, y:vararg=0
5278 \n: .int \y
5279 .endm
5280 m x
5281 EOF
5282     # .altmacro is only used in arm asm
5283     ! enabled arm || check_as <<EOF || return 1
5284 .altmacro
5285 EOF
5286     enable gnu_as
5287     return 0
5288 }
5289
5290 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5291     nogas=:
5292     enabled_any arm aarch64 && nogas=die
5293     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5294     as_noop=-v
5295
5296     case $as_type in
5297         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5298         gcc)  gaspp_as_type=gas ;;
5299         *)    gaspp_as_type=$as_type ;;
5300     esac
5301
5302     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5303
5304     test "${as#*gas-preprocessor.pl}" != "$as" ||
5305     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5306         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5307
5308     if ! check_gas ; then
5309         as=${gas:=$as}
5310         check_gas || \
5311             $nogas "GNU assembler not found, install/update gas-preprocessor"
5312     fi
5313
5314     check_as <<EOF && enable as_func
5315 .func test
5316 .endfunc
5317 EOF
5318 fi
5319
5320 check_inline_asm inline_asm_labels '"1:\n"'
5321
5322 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5323
5324 if enabled aarch64; then
5325     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5326     # internal assembler in clang 3.3 does not support this instruction
5327     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5328     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5329
5330     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5331
5332 elif enabled alpha; then
5333
5334     check_cflags -mieee
5335
5336 elif enabled arm; then
5337
5338     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5339
5340     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5341 float func(float a, float b){ return a+b; }
5342 EOF
5343
5344     enabled thumb && check_cflags -mthumb || check_cflags -marm
5345
5346     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5347         enable vfp_args
5348     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5349         enable vfp_args
5350     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5351         case "${cross_prefix:-$cc}" in
5352             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5353             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5354 __asm__ (".eabi_attribute 28, 1");
5355 int main(void) { return 0; }
5356 EOF
5357         esac
5358         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5359     fi
5360
5361     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5362     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5363     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5364     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5365     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5366     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5367     enabled setend  && check_insn setend  'setend be'
5368
5369     [ $target_os = linux ] || [ $target_os = android ] ||
5370         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5371             $ARCH_EXT_LIST_ARM
5372
5373     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5374
5375     check_as <<EOF && enable as_dn_directive
5376 ra .dn d0.i16
5377 .unreq ra
5378 EOF
5379     check_as <<EOF && enable as_fpu_directive
5380 .fpu neon
5381 EOF
5382
5383     # llvm's integrated assembler supports .object_arch from llvm 3.5
5384     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5385         check_as <<EOF && enable as_object_arch
5386 .object_arch armv4
5387 EOF
5388
5389     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5390
5391 elif enabled mips; then
5392
5393     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5394     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5395     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5396
5397     # Enable minimum ISA based on selected options
5398     if enabled mips64; then
5399         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5400         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5401         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5402     else
5403         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5404         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5405         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5406         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5407     fi
5408
5409     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5410     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5411     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5412     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5413     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5414
5415     if enabled bigendian && enabled msa; then
5416         disable msa
5417     fi
5418
5419 elif enabled parisc; then
5420
5421     if enabled gcc; then
5422         case $($cc -dumpversion) in
5423             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5424         esac
5425     fi
5426
5427 elif enabled ppc; then
5428
5429     enable local_aligned_8 local_aligned_16 local_aligned_32
5430
5431     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5432     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5433     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5434     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5435
5436     # AltiVec flags: The FSF version of GCC differs from the Apple version
5437     if enabled altivec; then
5438         check_cflags -maltivec -mabi=altivec &&
5439         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5440         check_cflags -faltivec
5441
5442         # check if our compiler supports Motorola AltiVec C API
5443         check_cc <<EOF || disable altivec
5444 $inc_altivec_h
5445 int main(void) {
5446     vector signed int v1 = (vector signed int) { 0 };
5447     vector signed int v2 = (vector signed int) { 1 };
5448     v1 = vec_add(v1, v2);
5449     return 0;
5450 }
5451 EOF
5452
5453         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5454     fi
5455
5456     if enabled vsx; then
5457         check_cflags -mvsx &&
5458         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5459     fi
5460
5461     if enabled power8; then
5462         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5463     fi
5464
5465 elif enabled x86; then
5466
5467     check_builtin rdtsc    intrin.h   "__rdtsc()"
5468     check_builtin mm_empty mmintrin.h "_mm_empty()"
5469
5470     enable local_aligned_8 local_aligned_16 local_aligned_32
5471
5472     # check whether EBP is available on x86
5473     # As 'i' is stored on the stack, this program will crash
5474     # if the base pointer is used to access it because the
5475     # base pointer is cleared in the inline assembly code.
5476     check_exec_crash <<EOF && enable ebp_available
5477 volatile int i=0;
5478 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5479 return i;
5480 EOF
5481
5482     # check whether EBX is available on x86
5483     check_inline_asm ebx_available '""::"b"(0)' &&
5484         check_inline_asm ebx_available '"":::"%ebx"'
5485
5486     # check whether xmm clobbers are supported
5487     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5488
5489     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5490         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5491
5492     # check whether binutils is new enough to compile SSSE3/MMXEXT
5493     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5494     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5495
5496     probe_x86asm(){
5497         x86asmexe_probe=$1
5498         if check_cmd $x86asmexe_probe -v; then
5499             x86asmexe=$x86asmexe_probe
5500             x86asm_type=nasm
5501             x86asm_debug="-g -F dwarf"
5502         elif check_cmd $x86asmexe_probe --version; then
5503             x86asmexe=$x86asmexe_probe
5504             x86asm_type=yasm
5505             x86asm_debug="-g dwarf2"
5506         fi
5507         check_x86asm "movbe ecx, [5]" && enable x86asm
5508     }
5509
5510     if ! disabled_any asm mmx x86asm; then
5511         disable x86asm
5512         for program in $x86asmexe nasm yasm; do
5513             probe_x86asm $program && break
5514         done
5515         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5516         test $x86asm_type = 'nasm' && X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5517         test $x86asm_type = 'yasm' && X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5518         X86ASMFLAGS="-f $objformat"
5519         enabled pic               && append X86ASMFLAGS "-DPIC"
5520         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5521         case "$objformat" in
5522             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5523         esac
5524
5525         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5526         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5527         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5528         check_x86asm "CPU amdnop" || disable cpunop
5529     fi
5530
5531     case "$cpu" in
5532         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5533             disable fast_clz
5534         ;;
5535     esac
5536
5537 fi
5538
5539 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5540
5541 check_ldflags -Wl,--as-needed
5542 check_ldflags -Wl,-z,noexecstack
5543
5544 if check_func dlopen && check_func dlsym; then
5545     ldl=
5546 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5547     ldl=-ldl
5548 fi
5549
5550 avisynth_demuxer_extralibs='$ldl'
5551 cuda_extralibs='$ldl'
5552 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5553 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5554 frei0r_filter_extralibs='$ldl'
5555 frei0r_src_filter_extralibs='$ldl'
5556 ladspa_filter_extralibs='$ldl'
5557 nvenc_extralibs='$ldl'
5558 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5559 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5560
5561 if ! disabled network; then
5562     check_func getaddrinfo $network_extralibs
5563     check_func inet_aton $network_extralibs
5564
5565     check_type netdb.h "struct addrinfo"
5566     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5567     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5568     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5569     check_type poll.h "struct pollfd"
5570     check_type netinet/sctp.h "struct sctp_event_subscribe"
5571     check_struct "sys/socket.h" "struct msghdr" msg_flags
5572     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5573     check_type netinet/in.h "struct sockaddr_in6"
5574     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5575     check_type "sys/types.h sys/socket.h" socklen_t
5576
5577     # Prefer arpa/inet.h over winsock2
5578     if check_header arpa/inet.h ; then
5579         check_func closesocket
5580     elif check_header winsock2.h ; then
5581         check_func_headers winsock2.h closesocket -lws2 &&
5582             network_extralibs="-lws2" ||
5583         { check_func_headers winsock2.h closesocket -lws2_32 &&
5584             network_extralibs="-lws2_32"; } || disable winsock2_h network
5585         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5586
5587         check_type ws2tcpip.h socklen_t
5588         check_type ws2tcpip.h "struct addrinfo"
5589         check_type ws2tcpip.h "struct group_source_req"
5590         check_type ws2tcpip.h "struct ip_mreq_source"
5591         check_type ws2tcpip.h "struct ipv6_mreq"
5592         check_type winsock2.h "struct pollfd"
5593         check_struct winsock2.h "struct sockaddr" sa_len
5594         check_type ws2tcpip.h "struct sockaddr_in6"
5595         check_type ws2tcpip.h "struct sockaddr_storage"
5596     else
5597         disable network
5598     fi
5599 fi
5600
5601 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5602 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5603 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5604 check_builtin sarestart signal.h "SA_RESTART"
5605 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5606 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5607 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5608 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5609 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5610
5611 case "$custom_allocator" in
5612     jemalloc)
5613         # jemalloc by default does not use a prefix
5614         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5615     ;;
5616     tcmalloc)
5617         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5618         malloc_prefix=tc_
5619     ;;
5620 esac
5621
5622 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5623 check_func  ${malloc_prefix}memalign            && enable memalign
5624 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5625
5626 check_func  access
5627 check_func_headers stdlib.h arc4random
5628 check_func_headers time.h clock_gettime ||
5629     { check_lib clock_gettime time.h clock_gettime -lrt && LIBRT="-lrt"; }
5630 check_func  fcntl
5631 check_func  fork
5632 check_func  gethrtime
5633 check_func  getopt
5634 check_func  getrusage
5635 check_func  gettimeofday
5636 check_func  isatty
5637 check_func  mach_absolute_time
5638 check_func  mkstemp
5639 check_func  mmap
5640 check_func  mprotect
5641 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5642 check_func_headers time.h nanosleep ||
5643     { check_lib nanosleep time.h nanosleep -lrt && LIBRT="-lrt"; }
5644 check_func  sched_getaffinity
5645 check_func  setrlimit
5646 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5647 check_func  strerror_r
5648 check_func  sysconf
5649 check_func  sysctl
5650 check_func  usleep
5651
5652 check_func_headers conio.h kbhit
5653 check_func_headers io.h setmode
5654 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5655 check_func_headers stdlib.h getenv
5656 check_func_headers sys/stat.h lstat
5657
5658 check_func_headers windows.h GetProcessAffinityMask
5659 check_func_headers windows.h GetProcessTimes
5660 check_func_headers windows.h GetSystemTimeAsFileTime
5661 check_func_headers windows.h LoadLibrary
5662 check_func_headers windows.h MapViewOfFile
5663 check_func_headers windows.h PeekNamedPipe
5664 check_func_headers windows.h SetConsoleTextAttribute
5665 check_func_headers windows.h SetConsoleCtrlHandler
5666 check_func_headers windows.h Sleep
5667 check_func_headers windows.h VirtualAlloc
5668 check_struct windows.h "CONDITION_VARIABLE" Ptr
5669 check_func_headers glob.h glob
5670 enabled xlib &&
5671     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5672
5673 check_header AudioToolbox/AudioToolbox.h
5674 check_header d3d11.h
5675 check_header direct.h
5676 check_header dirent.h
5677 check_header dlfcn.h
5678 check_header dxva.h
5679 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5680 check_header io.h
5681 check_header libcrystalhd/libcrystalhd_if.h
5682 check_header mach/mach_time.h
5683 check_header malloc.h
5684 check_header net/udplite.h
5685 check_header poll.h
5686 check_header sys/mman.h
5687 check_header sys/param.h
5688 check_header sys/resource.h
5689 check_header sys/select.h
5690 check_header sys/time.h
5691 check_header sys/un.h
5692 check_header termios.h
5693 check_header unistd.h
5694 check_header valgrind/valgrind.h
5695 check_header VideoDecodeAcceleration/VDADecoder.h
5696 check_header VideoToolbox/VideoToolbox.h
5697 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5698 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5699 check_header windows.h
5700 check_header X11/extensions/XvMClib.h
5701 check_header asm/types.h
5702
5703 # it seems there are versions of clang in some distros that try to use the
5704 # gcc headers, which explodes for stdatomic
5705 # so we also check that atomics actually work here
5706 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5707
5708 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5709 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5710 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5711
5712 check_lib coreservices "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5713
5714 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5715
5716 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5717 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5718 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5719 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5720 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5721
5722 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5723 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5724 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5725 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5726 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5727 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5728 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5729 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5730 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5731
5732 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5733
5734 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5735
5736 if ! disabled w32threads && ! enabled pthreads; then
5737     check_func_headers "windows.h process.h" _beginthreadex &&
5738         enable w32threads || disable w32threads
5739     if ! enabled w32threads && enabled winrt; then
5740         check_func_headers "windows.h" CreateThread &&
5741             enable w32threads || disable w32threads
5742     fi
5743 fi
5744
5745 # check for some common methods of building with pthread support
5746 # do this before the optional library checks as some of them require pthreads
5747 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5748     if check_lib pthreads pthread.h pthread_join   -pthread &&
5749        check_lib pthreads pthread.h pthread_create -pthread; then
5750         add_cflags -pthread
5751     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5752          check_lib pthreads pthread.h pthread_create -pthreads; then
5753         add_cflags -pthreads
5754     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5755          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5756         add_cflags -ldl -pthread
5757     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5758          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5759         :
5760     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5761          check_lib pthreads pthread.h pthread_create -lpthread; then
5762         :
5763     elif check_func pthread_join && check_func pthread_create; then
5764         enable pthreads
5765     fi
5766     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5767 fi
5768
5769
5770 if enabled pthreads; then
5771   check_func pthread_cancel
5772 fi
5773
5774 enabled pthreads &&
5775     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5776
5777 disabled  zlib || check_lib zlib   zlib.h      zlibVersion    -lz
5778 disabled bzlib || check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5779 disabled  lzma || check_lib lzma   lzma.h lzma_version_number -llzma
5780
5781 check_lib libm math.h sin -lm && LIBM="-lm"
5782 disabled crystalhd || check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
5783
5784 atan2f_args=2
5785 copysign_args=2
5786 hypot_args=2
5787 ldexpf_args=2
5788 powf_args=2
5789
5790 for func in $MATH_FUNCS; do
5791     eval check_mathfunc $func \${${func}_args:-1} $LIBM
5792 done
5793
5794 for func in $COMPLEX_FUNCS; do
5795     eval check_complexfunc $func \${${func}_args:-1}
5796 done
5797
5798 # these are off by default, so fail if requested and not available
5799 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5800 enabled avfoundation_indev && { check_lib avfoundation_indev CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5801                                 check_lib avfoundation_indev ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5802 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5803 enabled cuvid             && { enabled cuda ||
5804                                die "ERROR: CUVID requires CUDA"; }
5805 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5806 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5807 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5808 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5809                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5810 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5811 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5812 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5813 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5814 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5815 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5816 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5817 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5818 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5819 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5820                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5821                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5822 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5823 enabled libdc1394         && require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new
5824 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5825                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5826                                  warn "using libfdk without pkg-config"; } }
5827 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"
5828 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5829 enabled fontconfig        && enable libfontconfig
5830 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5831 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5832 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5833 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5834 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5835                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5836                                done || die "ERROR: libgsm not found"; }
5837 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5838 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5839 # While it may appear that require is being used as a pkg-config
5840 # fallback for libmfx, it is actually being used to detect a different
5841 # installation route altogether.  If libmfx is installed via the Intel
5842 # Media SDK or Intel Media Server Studio, these don't come with
5843 # pkg-config support.  Instead, users should make sure that the build
5844 # can find the libraries and headers through other means.
5845 enabled libmfx            && { use_pkg_config libmfx "mfx/mfxvideo.h" MFXInit ||
5846                                { require libmfx "mfx/mfxvideo.h" MFXInit -llibmfx && warn "using libmfx without pkg-config"; } }
5847 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5848 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5849 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa
5850 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
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                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5855                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5856                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5857 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5858 enabled libopenjpeg       && { { check_lib libopenjpeg openjpeg-2.2/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5859                                check_lib libopenjpeg openjpeg-2.2/openjpeg.h opj_version -lopenjp2 ||
5860                                { check_lib libopenjpeg openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5861                                check_lib libopenjpeg openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5862                                { check_lib libopenjpeg openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5863                                { check_lib libopenjpeg openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5864                                { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5865                                die "ERROR: libopenjpeg not found"; }
5866 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5867 enabled libopus           && {
5868     enabled libopus_decoder && {
5869         require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5870     }
5871     enabled libopus_encoder && {
5872         require_pkg_config opus opus_multistream.h opus_multistream_surround_encoder_create
5873     }
5874 }
5875 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5876 enabled librsvg           && require_pkg_config librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
5877 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5878 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5879 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5880 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5881                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5882 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
5883 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5884 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5885 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5886 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5887 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5888 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5889                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5890                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5891 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5892 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5893 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5894 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5895
5896 enabled libvpx            && {
5897     enabled libvpx_vp8_decoder && {
5898         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5899             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5900                 die "ERROR: libvpx decoder version must be >=0.9.1";
5901     }
5902     enabled libvpx_vp8_encoder && {
5903         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5904             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5905                 die "ERROR: libvpx encoder version must be >=0.9.7";
5906     }
5907     enabled libvpx_vp9_decoder && {
5908         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5909             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx
5910     }
5911     enabled libvpx_vp9_encoder && {
5912         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5913             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx
5914     }
5915     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5916         die "libvpx enabled but no supported decoders found"
5917     fi
5918 }
5919
5920 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5921 enabled libwebp           && {
5922     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5923     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5924 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5925                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
5926                                  warn "using libx264 without pkg-config"; } } &&
5927                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5928                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5929                              { check_cpp_condition x264.h "X264_MPEG2" &&
5930                                enable libx262; }
5931 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5932                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5933                                die "ERROR: libx265 version must be >= 68."; }
5934 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
5935 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5936 enabled libzimg           && require_pkg_config "zimg >= 2.3.0" zimg.h zimg_get_api_version
5937 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5938 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5939                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5940                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5941 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5942 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5943                                { ! enabled cross_compile &&
5944                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
5945                                  add_ldflags -L/opt/vc/lib/ &&
5946                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
5947                                die "ERROR: mmal not found" &&
5948                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
5949 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5950                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
5951                                die "ERROR: openal not found"; } &&
5952                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5953                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5954 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5955                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5956                                die "ERROR: opencl not found"; } &&
5957                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5958                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5959                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5960 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
5961                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5962                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5963                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5964                                die "ERROR: opengl not found."
5965                              }
5966 enabled omx_rpi           && { check_header OMX_Core.h ||
5967                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
5968                                die "ERROR: OpenMAX IL headers not found"; }
5969 enabled omx               && { check_header OMX_Core.h || die "ERROR: OpenMAX IL headers not found"; }
5970 enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
5971                                use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5972                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5973                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5974                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5975                                die "ERROR: openssl not found"; }
5976 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5977
5978 if enabled gcrypt; then
5979     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5980     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5981         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5982         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
5983         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
5984             die "ERROR: gcrypt not found"
5985         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_extralibs
5986     else
5987         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5988     fi
5989 fi
5990
5991 disabled sdl && disable sdl2
5992 if ! disabled sdl2; then
5993     SDL2_CONFIG="${cross_prefix}sdl2-config"
5994     if check_pkg_config sdl2 SDL_events.h SDL_PollEvent; then
5995         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5996         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5997         check_func SDL_Init $sdl2_extralibs $sdl2_cflags && enable sdl2
5998     else
5999       if "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6000         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6001         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6002         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6003         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6004         check_func SDL_Init $sdl2_extralibs $sdl2_cflags && enable sdl2
6005       fi
6006     fi
6007     if test $target_os = "mingw32"; then
6008         sdl2_extralibs="$sdl2_extralibs -mconsole"
6009     fi
6010 fi
6011 enabled sdl2 && enable sdl && add_cflags $sdl2_cflags && add_extralibs $sdl2_extralibs
6012
6013 if enabled decklink; then
6014     case $target_os in
6015         mingw32*|mingw64*|win32|win64)
6016             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6017             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6018             ;;
6019     esac
6020 fi
6021
6022 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6023     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security"; }
6024
6025 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6026                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
6027
6028 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6029 enabled makeinfo \
6030     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6031     && enable makeinfo_html || disable makeinfo_html
6032 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6033 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6034 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6035 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6036
6037 check_header linux/fb.h
6038 check_header linux/videodev.h
6039 check_header linux/videodev2.h
6040 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
6041
6042 check_header sys/videoio.h
6043 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
6044
6045 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6046 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6047 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6048 # w32api 3.12 had it defined wrong
6049 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6050
6051 check_type "dshow.h" IBaseFilter
6052
6053 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6054 { check_header dev/bktr/ioctl_meteor.h &&
6055   check_header dev/bktr/ioctl_bt848.h; } ||
6056 { check_header machine/ioctl_meteor.h &&
6057   check_header machine/ioctl_bt848.h; } ||
6058 { check_header dev/video/meteor/ioctl_meteor.h &&
6059   check_header dev/video/bktr/ioctl_bt848.h; } ||
6060 check_header dev/ic/bt8xx.h
6061
6062 if check_struct sys/soundcard.h audio_buf_info bytes; then
6063     enable_safe sys/soundcard.h
6064 else
6065     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
6066     #include <sys/soundcard.h>
6067     audio_buf_info abc;
6068 EOF
6069 fi
6070 check_header soundcard.h
6071
6072 enabled_any alsa_indev alsa_outdev &&
6073     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6074
6075 enabled jack_indev && check_lib jack jack/jack.h jack_client_open -ljack &&
6076     check_func jack_port_get_latency_range -ljack
6077
6078 enabled_any sndio_indev sndio_outdev && check_lib sndio sndio.h sio_open -lsndio
6079
6080 if enabled libcdio; then
6081     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6082     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6083     die "ERROR: No usable libcdio/cdparanoia found"
6084 fi
6085
6086 if ! disabled libxcb; then
6087     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
6088         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
6089     } && enable libxcb
6090
6091 if enabled libxcb; then
6092     disabled libxcb_shm || {
6093         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
6094             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
6095         } && check_header sys/shm.h && enable libxcb_shm; }
6096
6097     disabled libxcb_xfixes || {
6098         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
6099             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
6100         } && enable libxcb_xfixes; }
6101
6102     disabled libxcb_shape || {
6103         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
6104             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
6105         } && enable libxcb_shape; }
6106
6107     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
6108     add_extralibs $xcb_extralibs $xcb_shm_extralibs $xcb_xfixes_extralibs $xcb_shape_extralibs
6109 fi
6110 fi
6111
6112 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6113
6114 enabled dxva2api_h &&
6115     check_cc <<EOF && enable dxva2api_cobj
6116 #define _WIN32_WINNT 0x0600
6117 #define COBJMACROS
6118 #include <windows.h>
6119 #include <d3d9.h>
6120 #include <dxva2api.h>
6121 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
6122 EOF
6123
6124 enabled dxva2 &&
6125     check_lib dxva2_lib windows.h CoTaskMemFree -lole32
6126
6127 enabled vaapi &&
6128     check_lib vaapi va/va.h vaInitialize -lva
6129
6130 enabled vaapi &&
6131     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6132     disable vaapi
6133
6134 enabled vaapi &&
6135     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6136
6137 enabled vaapi &&
6138     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6139
6140 enabled vdpau &&
6141     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6142     disable vdpau
6143
6144 enabled vdpau &&
6145     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6146
6147 if enabled x86; then
6148     case $target_os in
6149         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6150             ;;
6151         *)
6152             disable cuda cuvid nvenc
6153             ;;
6154     esac
6155 else
6156     disable cuda cuvid nvenc
6157 fi
6158
6159 enabled nvenc &&
6160     check_cc -I$source_path <<EOF || disable nvenc
6161 #include "compat/nvenc/nvEncodeAPI.h"
6162 NV_ENCODE_API_FUNCTION_LIST flist;
6163 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6164 int main(void) { return 0; }
6165 EOF
6166
6167 # Funny iconv installations are not unusual, so check it after all flags have been set
6168 disabled iconv || check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6169
6170 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6171
6172 # add some useful compiler flags if supported
6173 check_cflags -Wdeclaration-after-statement
6174 check_cflags -Wall
6175 check_cflags -Wdisabled-optimization
6176 check_cflags -Wpointer-arith
6177 check_cflags -Wredundant-decls
6178 check_cflags -Wwrite-strings
6179 check_cflags -Wtype-limits
6180 check_cflags -Wundef
6181 check_cflags -Wmissing-prototypes
6182 check_cflags -Wno-pointer-to-int-cast
6183 check_cflags -Wstrict-prototypes
6184 check_cflags -Wempty-body
6185
6186 if enabled extra_warnings; then
6187     check_cflags -Wcast-qual
6188     check_cflags -Wextra
6189     check_cflags -Wpedantic
6190 fi
6191
6192 check_disable_warning(){
6193     warning_flag=-W${1#-Wno-}
6194     test_cflags $warning_flag && add_cflags $1
6195 }
6196
6197 check_disable_warning -Wno-parentheses
6198 check_disable_warning -Wno-switch
6199 check_disable_warning -Wno-format-zero-length
6200 check_disable_warning -Wno-pointer-sign
6201 check_disable_warning -Wno-unused-const-variable
6202
6203 check_disable_warning_headers(){
6204     warning_flag=-W${1#-Wno-}
6205     test_cflags $warning_flag && add_cflags_headers $1
6206 }
6207
6208 check_disable_warning_headers -Wno-deprecated-declarations
6209 check_disable_warning_headers -Wno-unused-variable
6210
6211 check_cc <<EOF && enable blocks_extension
6212 void (^block)(void);
6213 EOF
6214
6215 # add some linker flags
6216 check_ldflags -Wl,--warn-common
6217 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6218 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6219 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6220 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6221
6222 # add some strip flags
6223 check_stripflags -x
6224
6225 enabled neon_clobber_test &&
6226     check_ldflags -Wl,--wrap,avcodec_open2              \
6227                   -Wl,--wrap,avcodec_decode_audio4      \
6228                   -Wl,--wrap,avcodec_decode_video2      \
6229                   -Wl,--wrap,avcodec_decode_subtitle2   \
6230                   -Wl,--wrap,avcodec_encode_audio2      \
6231                   -Wl,--wrap,avcodec_encode_video2      \
6232                   -Wl,--wrap,avcodec_encode_subtitle    \
6233                   -Wl,--wrap,avcodec_send_packet        \
6234                   -Wl,--wrap,avcodec_receive_packet     \
6235                   -Wl,--wrap,avcodec_send_frame         \
6236                   -Wl,--wrap,avcodec_receive_frame      \
6237                   -Wl,--wrap,swr_convert                \
6238                   -Wl,--wrap,avresample_convert ||
6239     disable neon_clobber_test
6240
6241 enabled xmm_clobber_test &&
6242     check_ldflags -Wl,--wrap,avcodec_open2              \
6243                   -Wl,--wrap,avcodec_decode_audio4      \
6244                   -Wl,--wrap,avcodec_decode_video2      \
6245                   -Wl,--wrap,avcodec_decode_subtitle2   \
6246                   -Wl,--wrap,avcodec_encode_audio2      \
6247                   -Wl,--wrap,avcodec_encode_video2      \
6248                   -Wl,--wrap,avcodec_encode_subtitle    \
6249                   -Wl,--wrap,avcodec_send_packet        \
6250                   -Wl,--wrap,avcodec_receive_packet     \
6251                   -Wl,--wrap,avcodec_send_frame         \
6252                   -Wl,--wrap,avcodec_receive_frame      \
6253                   -Wl,--wrap,swr_convert                \
6254                   -Wl,--wrap,avresample_convert         \
6255                   -Wl,--wrap,sws_scale ||
6256     disable xmm_clobber_test
6257
6258 check_ld "cc" <<EOF && enable proper_dce
6259 extern const int array[512];
6260 static inline int func(void) { return array[0]; }
6261 int main(void) { return 0; }
6262 EOF
6263
6264 if enabled proper_dce; then
6265     echo "X { local: *; };" > $TMPV
6266     if test_ldflags -Wl,${version_script},$TMPV; then
6267         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6268         check_cc <<EOF && enable symver_asm_label
6269 void ff_foo(void) __asm__ ("av_foo@VERSION");
6270 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6271 EOF
6272         check_cc <<EOF && enable symver_gnu_asm
6273 __asm__(".symver ff_foo,av_foo@VERSION");
6274 void ff_foo(void) {}
6275 EOF
6276     fi
6277 fi
6278
6279 if [ -z "$optflags" ]; then
6280     if enabled small; then
6281         optflags=$cflags_size
6282     elif enabled optimizations; then
6283         optflags=$cflags_speed
6284     else
6285         optflags=$cflags_noopt
6286     fi
6287 fi
6288
6289 if [ -z "$nvccflags" ]; then
6290     nvccflags=$nvccflags_default
6291 fi
6292
6293 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6294     nvccflags="$nvccflags -m64"
6295 else
6296     nvccflags="$nvccflags -m32"
6297 fi
6298
6299 check_optflags(){
6300     check_cflags "$@"
6301     enabled lto && check_ldflags "$@"
6302 }
6303
6304 check_optflags $optflags
6305 check_optflags -fno-math-errno
6306 check_optflags -fno-signed-zeros
6307
6308 if enabled lto; then
6309     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6310     check_cflags  -flto
6311     check_ldflags -flto $cpuflags
6312     disable inline_asm_direct_symbol_refs
6313 fi
6314
6315 enabled ftrapv && check_cflags -ftrapv
6316
6317 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6318 int x;
6319 EOF
6320
6321
6322 if enabled icc; then
6323     # Just warnings, no remarks
6324     check_cflags -w1
6325     # -wd: Disable following warnings
6326     # 144, 167, 556: -Wno-pointer-sign
6327     # 188: enumerated type mixed with another type
6328     # 1292: attribute "foo" ignored
6329     # 1419: external declaration in primary source file
6330     # 10006: ignoring unknown option -fno-signed-zeros
6331     # 10148: ignoring unknown option -Wno-parentheses
6332     # 10156: ignoring option '-W'; no argument required
6333     # 13200: No EMMS instruction before call to function
6334     # 13203: No EMMS instruction before return from function
6335     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6336     # 11030: Warning unknown option --as-needed
6337     # 10156: ignoring option '-export'; no argument required
6338     check_ldflags -wd10156,11030
6339     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6340     enable ebp_available
6341     # The test above does not test linking
6342     enabled lto && disable symver_asm_label
6343     if enabled x86_32; then
6344         icc_version=$($cc -dumpversion)
6345         test ${icc_version%%.*} -ge 11 &&
6346             check_cflags -falign-stack=maintain-16-byte ||
6347             disable aligned_stack
6348     fi
6349 elif enabled ccc; then
6350     # disable some annoying warnings
6351     add_cflags -msg_disable bitnotint
6352     add_cflags -msg_disable mixfuncvoid
6353     add_cflags -msg_disable nonstandcast
6354     add_cflags -msg_disable unsupieee
6355 elif enabled gcc; then
6356     check_optflags -fno-tree-vectorize
6357     check_cflags -Werror=format-security
6358     check_cflags -Werror=implicit-function-declaration
6359     check_cflags -Werror=missing-prototypes
6360     check_cflags -Werror=return-type
6361     check_cflags -Werror=vla
6362     check_cflags -Wformat
6363     check_cflags -fdiagnostics-color=auto
6364     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6365 elif enabled llvm_gcc; then
6366     check_cflags -mllvm -stack-alignment=16
6367 elif enabled clang; then
6368     check_cflags -mllvm -stack-alignment=16
6369     check_cflags -mstack-alignment=16
6370     check_cflags -Qunused-arguments
6371     check_cflags -Werror=implicit-function-declaration
6372     check_cflags -Werror=missing-prototypes
6373     check_cflags -Werror=return-type
6374 elif enabled cparser; then
6375     add_cflags -Wno-missing-variable-declarations
6376     add_cflags -Wno-empty-statement
6377 elif enabled armcc; then
6378     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6379     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6380     # 2523: use of inline assembly is deprecated
6381     add_cflags -W${armcc_opt},--diag_suppress=2523
6382     add_cflags -W${armcc_opt},--diag_suppress=1207
6383     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6384     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6385     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6386     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6387 elif enabled tms470; then
6388     add_cflags -pds=824 -pds=837
6389     disable inline_asm
6390 elif enabled pathscale; then
6391     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6392 elif enabled_any msvc icl; then
6393     enabled x86_32 && disable aligned_stack
6394     enabled_all x86_32 debug && add_cflags -Oy-
6395     enabled debug && add_ldflags -debug
6396     enable pragma_deprecated
6397     if enabled icl; then
6398         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6399         # (correctly) on icl 13.x.
6400         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6401             add_cflags -Qansi-alias
6402         # Some inline asm is not compilable in debug
6403         if enabled debug; then
6404             disable ebp_available
6405             disable ebx_available
6406         fi
6407     fi
6408     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6409     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6410     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6411     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6412     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6413     # MSVC 2013 and newer can handle it fine.
6414     # If this declspec fails, force including stdlib.h before the restrict redefinition
6415     # happens in config.h.
6416     if [ $_restrict != restrict ]; then
6417         check_cc <<EOF || add_cflags -FIstdlib.h
6418 __declspec($_restrict) void* foo(int);
6419 EOF
6420     fi
6421     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6422     # Issue has been fixed in MSVC v19.00.24218.
6423     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6424         check_cflags -d2SSAOptimizer-
6425     # enable utf-8 source processing on VS2015 U2 and newer
6426     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6427         add_cflags -utf-8
6428 fi
6429
6430 for pfx in "" host_; do
6431     varname=${pfx%_}cc_type
6432     eval "type=\$$varname"
6433     if [ "$type" = "msvc" ]; then
6434         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6435 static inline int foo(int a) { return a; }
6436 EOF
6437     fi
6438 done
6439
6440 case $as_type in
6441     clang)
6442         add_asflags -Qunused-arguments
6443     ;;
6444 esac
6445
6446 case $ld_type in
6447     clang)
6448         check_ldflags -Qunused-arguments
6449     ;;
6450 esac
6451
6452 case $target_os in
6453     osf1)
6454         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6455     ;;
6456 esac
6457
6458 enable frame_thread_encoder
6459
6460 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6461
6462 check_deps $CONFIG_LIST       \
6463            $CONFIG_EXTRA      \
6464            $HAVE_LIST         \
6465            $ALL_COMPONENTS    \
6466
6467 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"
6468
6469
6470 if test $target_os = "haiku"; then
6471     disable memalign
6472     disable posix_memalign
6473 fi
6474
6475 # add_dep lib dep
6476 # -> enable ${lib}_deps_${dep}
6477 # -> add $dep to ${lib}_deps only once
6478 add_dep() {
6479     lib=$1
6480     dep=$2
6481     enabled "${lib}_deps_${dep}" && return 0
6482     enable  "${lib}_deps_${dep}"
6483     prepend "${lib}_deps" $dep
6484 }
6485
6486 # merge deps lib components
6487 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6488 merge_deps() {
6489     lib=$1
6490     shift
6491     for comp in $*; do
6492         enabled $comp || continue
6493         eval "dep=\"\$${comp}_deps\""
6494         for d in $dep; do
6495             add_dep $lib $d
6496         done
6497     done
6498 }
6499
6500 merge_deps libavfilter $FILTER_LIST
6501
6502 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6503
6504 for thread in $THREADS_LIST; do
6505     if enabled $thread; then
6506         test -n "$thread_type" &&
6507             die "ERROR: Only one thread type must be selected." ||
6508             thread_type="$thread"
6509     fi
6510 done
6511
6512 if disabled stdatomic_h; then
6513     if enabled atomics_gcc; then
6514         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6515     elif enabled atomics_win32; then
6516         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6517     elif enabled atomics_suncc; then
6518         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6519     elif enabled pthreads; then
6520         add_compat atomics/pthread/stdatomic.o
6521         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6522     else
6523         enabled threads && die "Threading is enabled, but no atomics are available"
6524         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6525     fi
6526 fi
6527
6528 # Check if requested libraries were found.
6529 for lib in $AUTODETECT_LIBS; do
6530     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6531 done
6532
6533 enabled zlib && add_cppflags -DZLIB_CONST
6534
6535 # conditional library dependencies, in linking order
6536 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6537 enabled afir_filter         && prepend avfilter_deps "avcodec"
6538 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6539 enabled aresample_filter    && prepend avfilter_deps "swresample"
6540 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6541 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6542 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6543 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6544 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6545 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6546 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6547 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6548 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6549 enabled pan_filter          && prepend avfilter_deps "swresample"
6550 enabled pp_filter           && prepend avfilter_deps "postproc"
6551 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6552 enabled resample_filter && prepend avfilter_deps "avresample"
6553 enabled sab_filter          && prepend avfilter_deps "swscale"
6554 enabled scale_filter    && prepend avfilter_deps "swscale"
6555 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6556 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6557 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6558 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6559 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6560 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6561 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6562 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6563 enabled spp_filter          && prepend avfilter_deps "avcodec"
6564 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6565 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6566 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6567
6568 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6569
6570 enabled opus_decoder    && prepend avcodec_deps "swresample"
6571
6572 expand_deps(){
6573     lib_deps=${1}_deps
6574     eval "deps=\$$lib_deps"
6575     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6576     unique $lib_deps
6577 }
6578
6579 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6580 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6581
6582 map 'expand_deps $v' $LIBRARY_LIST
6583
6584 license="LGPL version 2.1 or later"
6585 if enabled nonfree; then
6586     license="nonfree and unredistributable"
6587 elif enabled gplv3; then
6588     license="GPL version 3 or later"
6589 elif enabled lgplv3; then
6590     license="LGPL version 3 or later"
6591 elif enabled gpl; then
6592     license="GPL version 2 or later"
6593 fi
6594
6595 if test "$quiet" != "yes"; then
6596
6597 echo "install prefix            $prefix"
6598 echo "source path               $source_path"
6599 echo "C compiler                $cc"
6600 echo "C library                 $libc_type"
6601 if test "$host_cc" != "$cc"; then
6602     echo "host C compiler           $host_cc"
6603     echo "host C library            $host_libc_type"
6604 fi
6605 echo "ARCH                      $arch ($cpu)"
6606 if test "$build_suffix" != ""; then
6607     echo "build suffix              $build_suffix"
6608 fi
6609 if test "$progs_suffix" != ""; then
6610     echo "progs suffix              $progs_suffix"
6611 fi
6612 if test "$extra_version" != ""; then
6613     echo "version string suffix     $extra_version"
6614 fi
6615 echo "big-endian                ${bigendian-no}"
6616 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6617 if enabled x86; then
6618     echo "standalone assembly       ${x86asm-no}"
6619     echo "x86 assembler             ${x86asmexe}"
6620     echo "MMX enabled               ${mmx-no}"
6621     echo "MMXEXT enabled            ${mmxext-no}"
6622     echo "3DNow! enabled            ${amd3dnow-no}"
6623     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6624     echo "SSE enabled               ${sse-no}"
6625     echo "SSSE3 enabled             ${ssse3-no}"
6626     echo "AESNI enabled             ${aesni-no}"
6627     echo "AVX enabled               ${avx-no}"
6628     echo "XOP enabled               ${xop-no}"
6629     echo "FMA3 enabled              ${fma3-no}"
6630     echo "FMA4 enabled              ${fma4-no}"
6631     echo "i686 features enabled     ${i686-no}"
6632     echo "CMOV is fast              ${fast_cmov-no}"
6633     echo "EBX available             ${ebx_available-no}"
6634     echo "EBP available             ${ebp_available-no}"
6635 fi
6636 if enabled aarch64; then
6637     echo "NEON enabled              ${neon-no}"
6638     echo "VFP enabled               ${vfp-no}"
6639 fi
6640 if enabled arm; then
6641     echo "ARMv5TE enabled           ${armv5te-no}"
6642     echo "ARMv6 enabled             ${armv6-no}"
6643     echo "ARMv6T2 enabled           ${armv6t2-no}"
6644     echo "VFP enabled               ${vfp-no}"
6645     echo "NEON enabled              ${neon-no}"
6646     echo "THUMB enabled             ${thumb-no}"
6647 fi
6648 if enabled mips; then
6649     echo "MIPS FPU enabled          ${mipsfpu-no}"
6650     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6651     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6652     echo "MIPS MSA enabled          ${msa-no}"
6653     echo "LOONGSON MMI enabled      ${mmi-no}"
6654 fi
6655 if enabled ppc; then
6656     echo "AltiVec enabled           ${altivec-no}"
6657     echo "VSX enabled               ${vsx-no}"
6658     echo "POWER8 enabled            ${power8-no}"
6659     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6660     echo "dcbzl available           ${dcbzl-no}"
6661 fi
6662 echo "debug symbols             ${debug-no}"
6663 echo "strip symbols             ${stripping-no}"
6664 echo "optimize for size         ${small-no}"
6665 echo "optimizations             ${optimizations-no}"
6666 echo "static                    ${static-no}"
6667 echo "shared                    ${shared-no}"
6668 echo "postprocessing support    ${postproc-no}"
6669 echo "network support           ${network-no}"
6670 echo "threading support         ${thread_type-no}"
6671 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6672 echo "texi2html enabled         ${texi2html-no}"
6673 echo "perl enabled              ${perl-no}"
6674 echo "pod2man enabled           ${pod2man-no}"
6675 echo "makeinfo enabled          ${makeinfo-no}"
6676 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6677 test -n "$random_seed" &&
6678     echo "random seed               ${random_seed}"
6679 echo
6680
6681 echo "External libraries:"
6682 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6683 echo
6684
6685 echo "External libraries providing hardware acceleration:"
6686 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6687 echo
6688
6689 echo "Libraries:"
6690 print_enabled '' $LIBRARY_LIST | print_in_columns
6691 echo
6692
6693 echo "Programs:"
6694 print_enabled '' $PROGRAM_LIST | print_in_columns
6695 echo
6696
6697 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6698     echo "Enabled ${type}s:"
6699     eval list=\$$(toupper $type)_LIST
6700     print_enabled '_*' $list | print_in_columns
6701     echo
6702 done
6703
6704 if test -n "$ignore_tests"; then
6705     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6706     echo "Ignored FATE tests:"
6707     echo $ignore_tests | print_in_columns
6708     echo
6709 fi
6710
6711 echo "License: $license"
6712
6713 echo "Creating configuration files ..."
6714
6715 fi # test "$quiet" != "yes"
6716
6717 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6718
6719 enabled stripping || strip="echo skipping strip"
6720
6721 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6722
6723 cat > ffbuild/config.mak <<EOF
6724 # Automatically generated by configure - do not modify!
6725 ifndef FFMPEG_CONFIG_MAK
6726 FFMPEG_CONFIG_MAK=1
6727 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6728 prefix=$prefix
6729 LIBDIR=\$(DESTDIR)$libdir
6730 SHLIBDIR=\$(DESTDIR)$shlibdir
6731 INCDIR=\$(DESTDIR)$incdir
6732 BINDIR=\$(DESTDIR)$bindir
6733 DATADIR=\$(DESTDIR)$datadir
6734 DOCDIR=\$(DESTDIR)$docdir
6735 MANDIR=\$(DESTDIR)$mandir
6736 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6737 INSTALL_NAME_DIR=$install_name_dir
6738 SRC_PATH=$source_path
6739 SRC_LINK=$source_link
6740 ifndef MAIN_MAKEFILE
6741 SRC_PATH:=\$(SRC_PATH:.%=..%)
6742 endif
6743 CC_IDENT=$cc_ident
6744 ARCH=$arch
6745 INTRINSICS=$intrinsics
6746 CC=$cc
6747 CXX=$cxx
6748 AS=$as
6749 OBJCC=$objcc
6750 LD=$ld
6751 DEPCC=$dep_cc
6752 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6753 DEPAS=$as
6754 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6755 X86ASM=$x86asmexe
6756 DEPX86ASM=$x86asmexe
6757 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6758 AR=$ar
6759 ARFLAGS=$arflags
6760 AR_O=$ar_o
6761 RANLIB=$ranlib
6762 STRIP=$strip
6763 NVCC=$nvcc
6764 CP=cp -p
6765 LN_S=$ln_s
6766 CPPFLAGS=$CPPFLAGS
6767 CFLAGS=$CFLAGS
6768 CXXFLAGS=$CXXFLAGS
6769 OBJCFLAGS=$OBJCFLAGS
6770 ASFLAGS=$ASFLAGS
6771 NVCCFLAGS=$nvccflags
6772 AS_C=$AS_C
6773 AS_O=$AS_O
6774 OBJCC_C=$OBJCC_C
6775 OBJCC_E=$OBJCC_E
6776 OBJCC_O=$OBJCC_O
6777 CC_C=$CC_C
6778 CC_E=$CC_E
6779 CC_O=$CC_O
6780 CXX_C=$CXX_C
6781 CXX_O=$CXX_O
6782 NVCC_C=$NVCC_C
6783 NVCC_O=$NVCC_O
6784 LD_O=$LD_O
6785 X86ASM_O=$X86ASM_O
6786 LD_LIB=$LD_LIB
6787 LD_PATH=$LD_PATH
6788 DLLTOOL=$dlltool
6789 WINDRES=$windres
6790 DEPWINDRES=$dep_cc
6791 DOXYGEN=$doxygen
6792 LDFLAGS=$LDFLAGS
6793 LDEXEFLAGS=$LDEXEFLAGS
6794 LDLIBFLAGS=$LDLIBFLAGS
6795 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6796 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6797 X86ASMFLAGS=$X86ASMFLAGS
6798 BUILDSUF=$build_suffix
6799 PROGSSUF=$progs_suffix
6800 FULLNAME=$FULLNAME
6801 LIBPREF=$LIBPREF
6802 LIBSUF=$LIBSUF
6803 LIBNAME=$LIBNAME
6804 SLIBPREF=$SLIBPREF
6805 SLIBSUF=$SLIBSUF
6806 EXESUF=$EXESUF
6807 EXTRA_VERSION=$extra_version
6808 CCDEP=$CCDEP
6809 CXXDEP=$CXXDEP
6810 CCDEP_FLAGS=$CCDEP_FLAGS
6811 ASDEP=$ASDEP
6812 ASDEP_FLAGS=$ASDEP_FLAGS
6813 X86ASMDEP=$X86ASMDEP
6814 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
6815 CC_DEPFLAGS=$CC_DEPFLAGS
6816 AS_DEPFLAGS=$AS_DEPFLAGS
6817 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
6818 HOSTCC=$host_cc
6819 HOSTLD=$host_ld
6820 HOSTCFLAGS=$host_cflags
6821 HOSTCPPFLAGS=$host_cppflags
6822 HOSTEXESUF=$HOSTEXESUF
6823 HOSTLDFLAGS=$host_ldflags
6824 HOSTEXTRALIBS=$host_extralibs
6825 DEPHOSTCC=$host_cc
6826 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6827 HOSTCCDEP=$HOSTCCDEP
6828 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6829 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6830 HOSTCC_C=$HOSTCC_C
6831 HOSTCC_O=$HOSTCC_O
6832 HOSTLD_O=$HOSTLD_O
6833 TARGET_EXEC=$target_exec $target_exec_args
6834 TARGET_PATH=$target_path
6835 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6836 CFLAGS-ffplay=${sdl2_cflags}
6837 CFLAGS_HEADERS=$CFLAGS_HEADERS
6838 ZLIB=$($ldflags_filter -lz)
6839 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6840 EXTRALIBS=$extralibs
6841 COMPAT_OBJS=$compat_objs
6842 INSTALL=$install
6843 LIBTARGET=${LIBTARGET}
6844 SLIBNAME=${SLIBNAME}
6845 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6846 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6847 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6848 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6849 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6850 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6851 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6852 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6853 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6854 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6855 NOREDZONE_FLAGS=$noredzone_flags
6856 LIBFUZZER_PATH=$libfuzzer_path
6857 IGNORE_TESTS=$ignore_tests
6858 EOF
6859
6860 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
6861
6862 print_program_extralibs(){
6863     eval "program_extralibs=\$${1}_extralibs"
6864     eval echo "EXTRALIBS-${1}=${program_extralibs}" >> ffbuild/config.mak
6865 }
6866
6867 map 'print_program_extralibs $v' $PROGRAM_LIST
6868
6869 cat > $TMPH <<EOF
6870 /* Automatically generated by configure - do not modify! */
6871 #ifndef FFMPEG_CONFIG_H
6872 #define FFMPEG_CONFIG_H
6873 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6874 #define FFMPEG_LICENSE "$(c_escape $license)"
6875 #define CONFIG_THIS_YEAR 2017
6876 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6877 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6878 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6879 #define av_restrict $_restrict
6880 #define EXTERN_PREFIX "${extern_prefix}"
6881 #define EXTERN_ASM ${extern_prefix}
6882 #define BUILDSUF "$build_suffix"
6883 #define SLIBSUF "$SLIBSUF"
6884 #define HAVE_MMX2 HAVE_MMXEXT
6885 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6886 EOF
6887
6888 test -n "$assert_level" &&
6889     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6890
6891 test -n "$malloc_prefix" &&
6892     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6893
6894 if enabled x86asm; then
6895     append config_files $TMPASM
6896     printf '' >$TMPASM
6897 fi
6898
6899 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6900
6901
6902 mkdir -p doc
6903 mkdir -p tests
6904 mkdir -p tests/api
6905 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6906
6907 print_config ARCH_   "$config_files" $ARCH_LIST
6908 print_config HAVE_   "$config_files" $HAVE_LIST
6909 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6910                                      $CONFIG_EXTRA      \
6911                                      $ALL_COMPONENTS    \
6912
6913 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6914 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
6915
6916 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6917 cp_if_changed $TMPH config.h
6918 touch ffbuild/.config
6919
6920 enabled x86asm && cp_if_changed $TMPASM config.asm
6921
6922 cat > $TMPH <<EOF
6923 /* Generated by ffconf */
6924 #ifndef AVUTIL_AVCONFIG_H
6925 #define AVUTIL_AVCONFIG_H
6926 EOF
6927
6928 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6929
6930 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6931
6932 cp_if_changed $TMPH libavutil/avconfig.h
6933
6934 # generate the lists of enabled components
6935 print_enabled_components(){
6936     file=$1
6937     struct_name=$2
6938     name=$3
6939     shift 3
6940     echo "static const $struct_name *$name[] = {" > $TMPH
6941     for c in $*; do
6942         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6943     done
6944     echo "    NULL };" >> $TMPH
6945     cp_if_changed $TMPH $file
6946 }
6947
6948 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6949 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6950
6951 if test -n "$WARNINGS"; then
6952     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6953     enabled fatal_warnings && exit 1
6954 fi
6955
6956 # Settings for pkg-config files
6957
6958 cat > ffbuild/config.sh <<EOF
6959 # Automatically generated by configure - do not modify!
6960 shared=$shared
6961 build_suffix=$build_suffix
6962 prefix=$prefix
6963 libdir=$libdir
6964 incdir=$incdir
6965 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
6966 source_path=${source_path}
6967 LIBPREF=${LIBPREF}
6968 LIBSUF=${LIBSUF}
6969
6970 extralibs_avutil="$LIBRT $LIBM"
6971 extralibs_avcodec="$extralibs"
6972 extralibs_avformat="$extralibs"
6973 extralibs_avdevice="$extralibs"
6974 extralibs_avfilter="$extralibs"
6975 extralibs_avresample="$LIBM"
6976 extralibs_postproc=""
6977 extralibs_swscale="$LIBM"
6978 extralibs_swresample="$LIBM $LIBSOXR"
6979 EOF
6980
6981 for lib in $LIBRARY_LIST; do
6982     lib_deps="$(eval echo \$${lib}_deps)"
6983     echo ${lib}_deps=\"$lib_deps\" >> ffbuild/config.sh
6984 done