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 [$windres_default]
 333   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_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-yasm           disable use of nasm/yasm 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 ${1}_external
 980 }
 981
 982 check_yasm(){
 983     log check_yasm "$@"
 984     echo "$1" > $TMPS
 985     log_file $TMPS
 986     shift 1
 987     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -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     yasm
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_1_openjpeg_h
1872     openjpeg_2_0_openjpeg_h
1873     openjpeg_1_5_openjpeg_h
1874     OpenGL_gl3_h
1875     poll_h
1876     sndio_h
1877     soundcard_h
1878     stdatomic_h
1879     sys_mman_h
1880     sys_param_h
1881     sys_resource_h
1882     sys_select_h
1883     sys_soundcard_h
1884     sys_time_h
1885     sys_un_h
1886     sys_videoio_h
1887     termios_h
1888     udplite_h
1889     unistd_h
1890     valgrind_valgrind_h
1891     windows_h
1892     winsock2_h
1893 "
1894
1895 INTRINSICS_LIST="
1896     intrinsics_neon
1897 "
1898
1899 COMPLEX_FUNCS="
1900     cabs
1901     cexp
1902 "
1903
1904 MATH_FUNCS="
1905     atanf
1906     atan2f
1907     cbrt
1908     cbrtf
1909     copysign
1910     cosf
1911     erf
1912     exp2
1913     exp2f
1914     expf
1915     hypot
1916     isfinite
1917     isinf
1918     isnan
1919     ldexpf
1920     llrint
1921     llrintf
1922     log2
1923     log2f
1924     log10f
1925     lrint
1926     lrintf
1927     powf
1928     rint
1929     round
1930     roundf
1931     sinf
1932     trunc
1933     truncf
1934 "
1935
1936 SYSTEM_FUNCS="
1937     access
1938     aligned_malloc
1939     arc4random
1940     clock_gettime
1941     closesocket
1942     CommandLineToArgvW
1943     CoTaskMemFree
1944     CryptGenRandom
1945     dlopen
1946     fcntl
1947     flt_lim
1948     fork
1949     getaddrinfo
1950     gethrtime
1951     getopt
1952     GetProcessAffinityMask
1953     GetProcessMemoryInfo
1954     GetProcessTimes
1955     getrusage
1956     GetSystemTimeAsFileTime
1957     gettimeofday
1958     glob
1959     glXGetProcAddress
1960     gmtime_r
1961     inet_aton
1962     isatty
1963     jack_port_get_latency_range
1964     kbhit
1965     LoadLibrary
1966     localtime_r
1967     lstat
1968     lzo1x_999_compress
1969     mach_absolute_time
1970     MapViewOfFile
1971     memalign
1972     mkstemp
1973     mmap
1974     mprotect
1975     nanosleep
1976     PeekNamedPipe
1977     posix_memalign
1978     pthread_cancel
1979     sched_getaffinity
1980     SetConsoleTextAttribute
1981     SetConsoleCtrlHandler
1982     setmode
1983     setrlimit
1984     Sleep
1985     strerror_r
1986     sysconf
1987     sysctl
1988     usleep
1989     UTGetOSTypeFromString
1990     VirtualAlloc
1991     wglGetProcAddress
1992 "
1993
1994 TOOLCHAIN_FEATURES="
1995     as_dn_directive
1996     as_fpu_directive
1997     as_func
1998     as_object_arch
1999     asm_mod_q
2000     attribute_may_alias
2001     attribute_packed
2002     blocks_extension
2003     ebp_available
2004     ebx_available
2005     gnu_as
2006     gnu_windres
2007     ibm_asm
2008     inline_asm_direct_symbol_refs
2009     inline_asm_labels
2010     inline_asm_nonlocal_labels
2011     pragma_deprecated
2012     rsync_contimeout
2013     symver_asm_label
2014     symver_gnu_asm
2015     vfp_args
2016     xform_asm
2017     xmm_clobbers
2018 "
2019
2020 TYPES_LIST="
2021     CONDITION_VARIABLE_Ptr
2022     socklen_t
2023     struct_addrinfo
2024     struct_group_source_req
2025     struct_ip_mreq_source
2026     struct_ipv6_mreq
2027     struct_msghdr_msg_flags
2028     struct_pollfd
2029     struct_rusage_ru_maxrss
2030     struct_sctp_event_subscribe
2031     struct_sockaddr_in6
2032     struct_sockaddr_sa_len
2033     struct_sockaddr_storage
2034     struct_stat_st_mtim_tv_nsec
2035     struct_v4l2_frmivalenum_discrete
2036 "
2037
2038 HAVE_LIST="
2039     $ARCH_EXT_LIST
2040     $(add_suffix _external $ARCH_EXT_LIST)
2041     $(add_suffix _inline   $ARCH_EXT_LIST)
2042     $ARCH_FEATURES
2043     $ATOMICS_LIST
2044     $BUILTIN_LIST
2045     $COMPLEX_FUNCS
2046     $HAVE_LIST_CMDLINE
2047     $HAVE_LIST_PUB
2048     $HEADERS_LIST
2049     $INTRINSICS_LIST
2050     $MATH_FUNCS
2051     $SYSTEM_FUNCS
2052     $THREADS_LIST
2053     $TOOLCHAIN_FEATURES
2054     $TYPES_LIST
2055     alsa
2056     atomics_native
2057     dos_paths
2058     dxva2_lib
2059     dxva2api_cobj
2060     jack
2061     libc_msvcrt
2062     makeinfo
2063     makeinfo_html
2064     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2065     perl
2066     pod2man
2067     sdl2
2068     section_data_rel_ro
2069     sndio
2070     texi2html
2071     threads
2072     vaapi_drm
2073     vaapi_x11
2074     vdpau_x11
2075     winrt
2076 "
2077
2078 # options emitted with CONFIG_ prefix but not available on the command line
2079 CONFIG_EXTRA="
2080     aandcttables
2081     ac3dsp
2082     audio_frame_queue
2083     audiodsp
2084     blockdsp
2085     bswapdsp
2086     cabac
2087     dirac_parse
2088     dvprofile
2089     exif
2090     faandct
2091     faanidct
2092     fdctdsp
2093     flacdsp
2094     fmtconvert
2095     frame_thread_encoder
2096     g722dsp
2097     golomb
2098     gplv3
2099     h263dsp
2100     h264chroma
2101     h264dsp
2102     h264parse
2103     h264pred
2104     h264qpel
2105     hevcparse
2106     hpeldsp
2107     huffman
2108     huffyuvdsp
2109     huffyuvencdsp
2110     idctdsp
2111     iirfilter
2112     mdct15
2113     intrax8
2114     iso_media
2115     ividsp
2116     jpegtables
2117     lgplv3
2118     libx262
2119     llauddsp
2120     llviddsp
2121     llvidencdsp
2122     lpc
2123     lzf
2124     me_cmp
2125     mpeg_er
2126     mpegaudio
2127     mpegaudiodsp
2128     mpegaudioheader
2129     mpegvideo
2130     mpegvideoenc
2131     mss34dsp
2132     pixblockdsp
2133     qpeldsp
2134     qsv
2135     qsvdec
2136     qsvenc
2137     rangecoder
2138     riffdec
2139     riffenc
2140     rtpdec
2141     rtpenc_chain
2142     rv34dsp
2143     sinewin
2144     snappy
2145     srtp
2146     startcode
2147     texturedsp
2148     texturedspenc
2149     tpeldsp
2150     vaapi_encode
2151     vc1dsp
2152     videodsp
2153     vp3dsp
2154     vp56dsp
2155     vp8dsp
2156     vt_bt2020
2157     wma_freqs
2158     wmv2dsp
2159 "
2160
2161 CMDLINE_SELECT="
2162     $ARCH_EXT_LIST
2163     $CONFIG_LIST
2164     $HAVE_LIST_CMDLINE
2165     $THREADS_LIST
2166     asm
2167     cross_compile
2168     debug
2169     extra_warnings
2170     logging
2171     lto
2172     optimizations
2173     rpath
2174     stripping
2175 "
2176
2177 PATHS_LIST="
2178     bindir
2179     datadir
2180     docdir
2181     incdir
2182     libdir
2183     mandir
2184     pkgconfigdir
2185     prefix
2186     shlibdir
2187     install_name_dir
2188 "
2189
2190 CMDLINE_SET="
2191     $PATHS_LIST
2192     ar
2193     arch
2194     as
2195     assert_level
2196     build_suffix
2197     cc
2198     objcc
2199     cpu
2200     cross_prefix
2201     custom_allocator
2202     cxx
2203     dep_cc
2204     doxygen
2205     env
2206     extra_version
2207     gas
2208     host_cc
2209     host_cflags
2210     host_extralibs
2211     host_ld
2212     host_ldflags
2213     host_os
2214     ignore_tests
2215     install
2216     ld
2217     ln_s
2218     logfile
2219     malloc_prefix
2220     nm
2221     optflags
2222     nvccflags
2223     pkg_config
2224     pkg_config_flags
2225     progs_suffix
2226     random_seed
2227     ranlib
2228     samples
2229     strip
2230     sws_max_filter_size
2231     sysinclude
2232     sysroot
2233     target_exec
2234     target_os
2235     target_path
2236     target_samples
2237     tempprefix
2238     toolchain
2239     valgrind
2240     yasmexe
2241 "
2242
2243 CMDLINE_APPEND="
2244     extra_cflags
2245     extra_cxxflags
2246     extra_objcflags
2247     host_cppflags
2248 "
2249
2250 # code dependency declarations
2251
2252 # architecture extensions
2253
2254 armv5te_deps="arm"
2255 armv6_deps="arm"
2256 armv6t2_deps="arm"
2257 armv8_deps="aarch64"
2258 neon_deps_any="aarch64 arm"
2259 intrinsics_neon_deps="neon"
2260 vfp_deps_any="aarch64 arm"
2261 vfpv3_deps="vfp"
2262 setend_deps="arm"
2263
2264 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2265
2266 loongson2_deps="mips"
2267 loongson3_deps="mips"
2268 mipsfpu_deps="mips"
2269 mipsdsp_deps="mips"
2270 mipsdspr2_deps="mips"
2271 mips32r2_deps="mips"
2272 mips32r5_deps="mips"
2273 mips32r6_deps="mips"
2274 mips64r2_deps="mips"
2275 mips64r6_deps="mips"
2276 msa_deps="mipsfpu"
2277 mmi_deps="mips"
2278
2279 altivec_deps="ppc"
2280 dcbzl_deps="ppc"
2281 ldbrx_deps="ppc"
2282 ppc4xx_deps="ppc"
2283 vsx_deps="altivec"
2284 power8_deps="vsx"
2285
2286 cpunop_deps="i686"
2287 x86_64_select="i686"
2288 x86_64_suggest="fast_cmov"
2289
2290 amd3dnow_deps="mmx"
2291 amd3dnowext_deps="amd3dnow"
2292 i686_deps="x86"
2293 mmx_deps="x86"
2294 mmxext_deps="mmx"
2295 sse_deps="mmxext"
2296 sse2_deps="sse"
2297 sse3_deps="sse2"
2298 ssse3_deps="sse3"
2299 sse4_deps="ssse3"
2300 sse42_deps="sse4"
2301 aesni_deps="sse42"
2302 avx_deps="sse42"
2303 xop_deps="avx"
2304 fma3_deps="avx"
2305 fma4_deps="avx"
2306 avx2_deps="avx"
2307
2308 mmx_external_deps="yasm"
2309 mmx_inline_deps="inline_asm"
2310 mmx_suggest="mmx_external mmx_inline"
2311
2312 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2313     eval dep=\$${ext}_deps
2314     eval ${ext}_external_deps='"${dep}_external"'
2315     eval ${ext}_inline_deps='"${dep}_inline"'
2316     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2317 done
2318
2319 aligned_stack_if_any="aarch64 ppc x86"
2320 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2321 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2322 fast_unaligned_if_any="aarch64 ppc x86"
2323 simd_align_16_if_any="altivec neon sse"
2324 simd_align_32_if_any="avx"
2325
2326 # system capabilities
2327 symver_if_any="symver_asm_label symver_gnu_asm"
2328 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2329
2330 # threading support
2331 atomics_gcc_if="sync_val_compare_and_swap"
2332 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2333 atomics_win32_if="MemoryBarrier"
2334 atomics_native_if_any="$ATOMICS_LIST"
2335 w32threads_deps="atomics_native"
2336 threads_if_any="$THREADS_LIST"
2337
2338 # subsystems
2339 dct_select="rdft"
2340 dirac_parse_select="golomb"
2341 error_resilience_select="me_cmp"
2342 faandct_deps="faan fdctdsp"
2343 faanidct_deps="faan idctdsp"
2344 h264dsp_select="startcode"
2345 hevcparse_select="golomb"
2346 frame_thread_encoder_deps="encoders threads"
2347 intrax8_select="blockdsp idctdsp"
2348 mdct_select="fft"
2349 mdct15_select="fft"
2350 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2351 mpeg_er_select="error_resilience"
2352 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2353 mpegaudiodsp_select="dct"
2354 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2355 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2356 vc1dsp_select="h264chroma qpeldsp startcode"
2357 rdft_select="fft"
2358
2359 # decoders / encoders
2360 aac_decoder_select="mdct15 mdct sinewin"
2361 aac_fixed_decoder_select="mdct sinewin"
2362 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2363 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2364 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2365 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2366 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2367 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2368 adpcm_g722_decoder_select="g722dsp"
2369 adpcm_g722_encoder_select="g722dsp"
2370 aic_decoder_select="golomb idctdsp"
2371 alac_encoder_select="lpc"
2372 als_decoder_select="bswapdsp"
2373 amrnb_decoder_select="lsp"
2374 amrwb_decoder_select="lsp"
2375 amv_decoder_select="sp5x_decoder exif"
2376 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2377 ape_decoder_select="bswapdsp llauddsp"
2378 apng_decoder_select="zlib"
2379 apng_encoder_select="llvidencdsp zlib"
2380 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2381 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2382 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2383 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2384 atrac1_decoder_select="mdct sinewin"
2385 atrac3_decoder_select="mdct"
2386 atrac3p_decoder_select="mdct sinewin"
2387 avrn_decoder_select="exif jpegtables"
2388 bink_decoder_select="blockdsp hpeldsp"
2389 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2390 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2391 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2392 cllc_decoder_select="bswapdsp"
2393 comfortnoise_encoder_select="lpc"
2394 cook_decoder_select="audiodsp mdct sinewin"
2395 cscd_decoder_select="lzo"
2396 cscd_decoder_suggest="zlib"
2397 dca_decoder_select="mdct"
2398 dds_decoder_select="texturedsp"
2399 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2400 dnxhd_decoder_select="blockdsp idctdsp"
2401 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2402 dvvideo_decoder_select="dvprofile idctdsp"
2403 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2404 dxa_decoder_select="zlib"
2405 dxv_decoder_select="lzf texturedsp"
2406 eac3_decoder_select="ac3_decoder"
2407 eac3_encoder_select="ac3_encoder"
2408 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2409 eatgq_decoder_select="aandcttables"
2410 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2411 exr_decoder_select="zlib"
2412 ffv1_decoder_select="rangecoder"
2413 ffv1_encoder_select="rangecoder"
2414 ffvhuff_decoder_select="huffyuv_decoder"
2415 ffvhuff_encoder_select="huffyuv_encoder"
2416 fic_decoder_select="golomb"
2417 flac_decoder_select="flacdsp"
2418 flac_encoder_select="bswapdsp flacdsp lpc"
2419 flashsv2_decoder_select="zlib"
2420 flashsv2_encoder_select="zlib"
2421 flashsv_decoder_select="zlib"
2422 flashsv_encoder_select="zlib"
2423 flv_decoder_select="h263_decoder"
2424 flv_encoder_select="h263_encoder"
2425 fourxm_decoder_select="blockdsp bswapdsp"
2426 fraps_decoder_select="bswapdsp huffman"
2427 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2428 g729_decoder_select="audiodsp"
2429 h261_decoder_select="mpegvideo"
2430 h261_encoder_select="aandcttables mpegvideoenc"
2431 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2432 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2433 h263i_decoder_select="h263_decoder"
2434 h263p_decoder_select="h263_decoder"
2435 h263p_encoder_select="h263_encoder"
2436 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2437 h264_decoder_suggest="error_resilience"
2438 hap_decoder_select="snappy texturedsp"
2439 hap_encoder_deps="libsnappy"
2440 hap_encoder_select="texturedspenc"
2441 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2442 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2443 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2444 iac_decoder_select="imc_decoder"
2445 imc_decoder_select="bswapdsp fft mdct sinewin"
2446 indeo3_decoder_select="hpeldsp"
2447 indeo4_decoder_select="ividsp"
2448 indeo5_decoder_select="ividsp"
2449 interplay_video_decoder_select="hpeldsp"
2450 jpegls_decoder_select="mjpeg_decoder"
2451 jv_decoder_select="blockdsp"
2452 lagarith_decoder_select="llviddsp"
2453 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2454 magicyuv_decoder_select="llviddsp"
2455 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2456 metasound_decoder_select="lsp mdct sinewin"
2457 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2458 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2459 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2460 mjpegb_decoder_select="mjpeg_decoder"
2461 mlp_decoder_select="mlp_parser"
2462 mlp_encoder_select="lpc"
2463 motionpixels_decoder_select="bswapdsp"
2464 mp1_decoder_select="mpegaudio"
2465 mp1float_decoder_select="mpegaudio"
2466 mp2_decoder_select="mpegaudio"
2467 mp2float_decoder_select="mpegaudio"
2468 mp3_decoder_select="mpegaudio"
2469 mp3adu_decoder_select="mpegaudio"
2470 mp3adufloat_decoder_select="mpegaudio"
2471 mp3float_decoder_select="mpegaudio"
2472 mp3on4_decoder_select="mpegaudio"
2473 mp3on4float_decoder_select="mpegaudio"
2474 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2475 mpc8_decoder_select="mpegaudiodsp"
2476 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2477 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2478 mpegvideo_decoder_select="mpegvideo"
2479 mpeg1video_decoder_select="mpegvideo"
2480 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2481 mpeg2video_decoder_select="mpegvideo"
2482 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2483 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2484 mpeg4_encoder_select="h263_encoder"
2485 msa1_decoder_select="mss34dsp"
2486 mscc_decoder_select="zlib"
2487 msmpeg4v1_decoder_select="h263_decoder"
2488 msmpeg4v2_decoder_select="h263_decoder"
2489 msmpeg4v2_encoder_select="h263_encoder"
2490 msmpeg4v3_decoder_select="h263_decoder"
2491 msmpeg4v3_encoder_select="h263_encoder"
2492 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2493 mts2_decoder_select="mss34dsp"
2494 mxpeg_decoder_select="mjpeg_decoder"
2495 nellymoser_decoder_select="mdct sinewin"
2496 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2497 nuv_decoder_select="idctdsp lzo"
2498 on2avc_decoder_select="mdct"
2499 opus_decoder_deps="swresample"
2500 opus_decoder_select="mdct15"
2501 opus_encoder_select="audio_frame_queue mdct15"
2502 png_decoder_select="zlib"
2503 png_encoder_select="llvidencdsp zlib"
2504 prores_decoder_select="blockdsp idctdsp"
2505 prores_encoder_select="fdctdsp"
2506 qcelp_decoder_select="lsp"
2507 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2508 ra_144_decoder_select="audiodsp"
2509 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2510 ralf_decoder_select="golomb"
2511 rawvideo_decoder_select="bswapdsp"
2512 rscc_decoder_select="zlib"
2513 rtjpeg_decoder_select="me_cmp"
2514 rv10_decoder_select="h263_decoder"
2515 rv10_encoder_select="h263_encoder"
2516 rv20_decoder_select="h263_decoder"
2517 rv20_encoder_select="h263_encoder"
2518 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2519 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2520 screenpresso_decoder_select="zlib"
2521 shorten_decoder_select="bswapdsp"
2522 sipr_decoder_select="lsp"
2523 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2524 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2525 sonic_decoder_select="golomb rangecoder"
2526 sonic_encoder_select="golomb rangecoder"
2527 sonic_ls_encoder_select="golomb rangecoder"
2528 sp5x_decoder_select="mjpeg_decoder"
2529 srgc_decoder_select="zlib"
2530 svq1_decoder_select="hpeldsp"
2531 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2532 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2533 svq3_decoder_suggest="zlib"
2534 tak_decoder_select="audiodsp"
2535 tdsc_decoder_select="zlib mjpeg_decoder"
2536 theora_decoder_select="vp3_decoder"
2537 thp_decoder_select="mjpeg_decoder"
2538 tiff_decoder_suggest="zlib lzma"
2539 tiff_encoder_suggest="zlib"
2540 truehd_decoder_select="mlp_parser"
2541 truehd_encoder_select="lpc"
2542 truemotion2_decoder_select="bswapdsp"
2543 truespeech_decoder_select="bswapdsp"
2544 tscc_decoder_select="zlib"
2545 twinvq_decoder_select="mdct lsp sinewin"
2546 txd_decoder_select="texturedsp"
2547 utvideo_decoder_select="bswapdsp llviddsp"
2548 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2549 vble_decoder_select="llviddsp"
2550 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2551 vc1_qsv_decoder_deps="libmfx"
2552 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2553 vc1image_decoder_select="vc1_decoder"
2554 vorbis_decoder_select="mdct"
2555 vorbis_encoder_select="mdct"
2556 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2557 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2558 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2559 vp6a_decoder_select="vp6_decoder"
2560 vp6f_decoder_select="vp6_decoder"
2561 vp7_decoder_select="h264pred videodsp vp8dsp"
2562 vp8_decoder_select="h264pred videodsp vp8dsp"
2563 vp9_decoder_select="videodsp vp9_parser"
2564 webp_decoder_select="vp8_decoder exif"
2565 wmalossless_decoder_select="llauddsp"
2566 wmapro_decoder_select="mdct sinewin wma_freqs"
2567 wmav1_decoder_select="mdct sinewin wma_freqs"
2568 wmav1_encoder_select="mdct sinewin wma_freqs"
2569 wmav2_decoder_select="mdct sinewin wma_freqs"
2570 wmav2_encoder_select="mdct sinewin wma_freqs"
2571 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2572 wmv1_decoder_select="h263_decoder"
2573 wmv1_encoder_select="h263_encoder"
2574 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2575 wmv2_encoder_select="h263_encoder wmv2dsp"
2576 wmv3_decoder_select="vc1_decoder"
2577 wmv3image_decoder_select="wmv3_decoder"
2578 xma1_decoder_select="wmapro_decoder"
2579 xma2_decoder_select="wmapro_decoder"
2580 zerocodec_decoder_select="zlib"
2581 zlib_decoder_select="zlib"
2582 zlib_encoder_select="zlib"
2583 zmbv_decoder_select="zlib"
2584 zmbv_encoder_select="zlib"
2585
2586 # platform codecs
2587 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2588 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2589
2590 # hardware accelerators
2591 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2592 cuda_deps_any="dlopen LoadLibrary"
2593 cuvid_deps="cuda"
2594 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2595 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2596 dxva2_extralibs="-luser32"
2597 dxva2_lib_deps="dxva2"
2598 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension"
2599 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2600 vda_deps="vda_framework pthreads"
2601 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2602 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2603 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2604 xvmc_deps="X11_extensions_XvMClib_h"
2605
2606 h263_vaapi_hwaccel_deps="vaapi"
2607 h263_vaapi_hwaccel_select="h263_decoder"
2608 h263_videotoolbox_hwaccel_deps="videotoolbox"
2609 h263_videotoolbox_hwaccel_select="h263_decoder"
2610 h264_cuvid_hwaccel_deps="cuda cuvid"
2611 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2612 h264_d3d11va_hwaccel_deps="d3d11va"
2613 h264_d3d11va_hwaccel_select="h264_decoder"
2614 h264_dxva2_hwaccel_deps="dxva2"
2615 h264_dxva2_hwaccel_select="h264_decoder"
2616 h264_mediacodec_hwaccel_deps="mediacodec"
2617 h264_mmal_hwaccel_deps="mmal"
2618 h264_qsv_hwaccel_deps="libmfx"
2619 h264_vaapi_hwaccel_deps="vaapi"
2620 h264_vaapi_hwaccel_select="h264_decoder"
2621 h264_vda_hwaccel_deps="vda"
2622 h264_vda_hwaccel_select="h264_decoder"
2623 h264_vda_old_hwaccel_deps="vda"
2624 h264_vda_old_hwaccel_select="h264_decoder"
2625 h264_vdpau_hwaccel_deps="vdpau"
2626 h264_vdpau_hwaccel_select="h264_decoder"
2627 h264_videotoolbox_hwaccel_deps="videotoolbox"
2628 h264_videotoolbox_hwaccel_select="h264_decoder"
2629 hevc_cuvid_hwaccel_deps="cuda cuvid"
2630 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2631 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2632 hevc_d3d11va_hwaccel_select="hevc_decoder"
2633 hevc_mediacodec_hwaccel_deps="mediacodec"
2634 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2635 hevc_dxva2_hwaccel_select="hevc_decoder"
2636 hevc_qsv_hwaccel_deps="libmfx"
2637 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2638 hevc_vaapi_hwaccel_select="hevc_decoder"
2639 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2640 hevc_vdpau_hwaccel_select="hevc_decoder"
2641 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2642 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2643 mpeg_xvmc_hwaccel_deps="xvmc"
2644 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2645 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2646 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2647 mpeg1_vdpau_hwaccel_deps="vdpau"
2648 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2649 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2650 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2651 mpeg1_xvmc_hwaccel_deps="xvmc"
2652 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2653 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2654 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2655 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2656 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2657 mpeg2_dxva2_hwaccel_deps="dxva2"
2658 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2659 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2660 mpeg2_mmal_hwaccel_deps="mmal"
2661 mpeg2_qsv_hwaccel_deps="libmfx"
2662 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2663 mpeg2_vaapi_hwaccel_deps="vaapi"
2664 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2665 mpeg2_vdpau_hwaccel_deps="vdpau"
2666 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2667 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2668 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2669 mpeg2_xvmc_hwaccel_deps="xvmc"
2670 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2671 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2672 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2673 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2674 mpeg4_mmal_hwaccel_deps="mmal"
2675 mpeg4_vaapi_hwaccel_deps="vaapi"
2676 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2677 mpeg4_vdpau_hwaccel_deps="vdpau"
2678 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2679 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2680 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2681 vc1_cuvid_hwaccel_deps="cuda cuvid"
2682 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2683 vc1_d3d11va_hwaccel_deps="d3d11va"
2684 vc1_d3d11va_hwaccel_select="vc1_decoder"
2685 vc1_dxva2_hwaccel_deps="dxva2"
2686 vc1_dxva2_hwaccel_select="vc1_decoder"
2687 vc1_mmal_hwaccel_deps="mmal"
2688 vc1_qsv_hwaccel_deps="libmfx"
2689 vc1_qsv_hwaccel_select="qsvdec_vc1"
2690 vc1_vaapi_hwaccel_deps="vaapi"
2691 vc1_vaapi_hwaccel_select="vc1_decoder"
2692 vc1_vdpau_hwaccel_deps="vdpau"
2693 vc1_vdpau_hwaccel_select="vc1_decoder"
2694 vp8_cuvid_hwaccel_deps="cuda cuvid"
2695 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2696 vp9_cuvid_hwaccel_deps="cuda cuvid"
2697 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2698 vp8_mediacodec_hwaccel_deps="mediacodec"
2699 vp8_qsv_hwaccel_deps="libmfx"
2700 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2701 vp9_d3d11va_hwaccel_select="vp9_decoder"
2702 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2703 vp9_dxva2_hwaccel_select="vp9_decoder"
2704 vp9_mediacodec_hwaccel_deps="mediacodec"
2705 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2706 vp9_vaapi_hwaccel_select="vp9_decoder"
2707 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2708 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2709 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2710 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2711
2712 # hardware-accelerated codecs
2713 omx_deps="dlopen pthreads"
2714 omx_extralibs='$ldl'
2715 omx_rpi_select="omx"
2716 qsvdec_select="qsv"
2717 qsvenc_select="qsv"
2718 vaapi_encode_deps="vaapi"
2719
2720 hwupload_cuda_filter_deps="cuda"
2721 scale_npp_filter_deps="cuda libnpp"
2722 scale_cuda_filter_deps="cuda_sdk"
2723
2724 nvenc_deps="cuda"
2725 nvenc_deps_any="dlopen LoadLibrary"
2726 nvenc_encoder_deps="nvenc"
2727
2728 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2729 h264_cuvid_decoder_deps="cuda cuvid"
2730 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2731 h264_mediacodec_decoder_deps="mediacodec"
2732 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2733 h264_mmal_decoder_deps="mmal"
2734 h264_nvenc_encoder_deps="nvenc"
2735 h264_omx_encoder_deps="omx"
2736 h264_qsv_decoder_deps="libmfx"
2737 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2738 h264_qsv_encoder_deps="libmfx"
2739 h264_qsv_encoder_select="qsvenc"
2740 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2741 h264_vaapi_encoder_select="vaapi_encode golomb"
2742 h264_vda_decoder_deps="vda"
2743 h264_vda_decoder_select="h264_decoder"
2744 h264_vdpau_decoder_deps="vdpau"
2745 h264_vdpau_decoder_select="h264_decoder"
2746 hevc_cuvid_decoder_deps="cuda cuvid"
2747 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2748 hevc_mediacodec_decoder_deps="mediacodec"
2749 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2750 hevc_nvenc_encoder_deps="nvenc"
2751 hevc_qsv_decoder_deps="libmfx"
2752 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2753 hevc_qsv_encoder_deps="libmfx"
2754 hevc_qsv_encoder_select="hevcparse qsvenc"
2755 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2756 hevc_vaapi_encoder_select="vaapi_encode golomb"
2757 mjpeg_cuvid_decoder_deps="cuda cuvid"
2758 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2759 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2760 mpeg1_cuvid_decoder_deps="cuda cuvid"
2761 mpeg1_vdpau_decoder_deps="vdpau"
2762 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2763 mpeg2_crystalhd_decoder_select="crystalhd"
2764 mpeg2_cuvid_decoder_deps="cuda cuvid"
2765 mpeg2_mmal_decoder_deps="mmal"
2766 mpeg2_mediacodec_decoder_deps="mediacodec"
2767 mpeg2_qsv_decoder_deps="libmfx"
2768 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2769 mpeg2_qsv_encoder_deps="libmfx"
2770 mpeg2_qsv_encoder_select="qsvenc"
2771 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2772 mpeg2_vaapi_encoder_select="vaapi_encode"
2773 mpeg4_crystalhd_decoder_select="crystalhd"
2774 mpeg4_cuvid_decoder_deps="cuda cuvid"
2775 mpeg4_mediacodec_decoder_deps="mediacodec"
2776 mpeg4_mmal_decoder_deps="mmal"
2777 mpeg4_omx_encoder_deps="omx"
2778 mpeg4_vdpau_decoder_deps="vdpau"
2779 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2780 mpeg_vdpau_decoder_deps="vdpau"
2781 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2782 msmpeg4_crystalhd_decoder_select="crystalhd"
2783 nvenc_h264_encoder_select="h264_nvenc_encoder"
2784 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2785 vc1_crystalhd_decoder_select="crystalhd"
2786 vc1_cuvid_decoder_deps="cuda cuvid"
2787 vc1_mmal_decoder_deps="mmal"
2788 vc1_vdpau_decoder_deps="vdpau"
2789 vc1_vdpau_decoder_select="vc1_decoder"
2790 vp8_cuvid_decoder_deps="cuda cuvid"
2791 vp8_mediacodec_decoder_deps="mediacodec"
2792 vp8_qsv_decoder_deps="libmfx"
2793 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2794 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2795 vp8_vaapi_encoder_select="vaapi_encode"
2796 vp9_cuvid_decoder_deps="cuda cuvid"
2797 vp9_mediacodec_decoder_deps="mediacodec"
2798 wmv3_crystalhd_decoder_select="crystalhd"
2799 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2800
2801 # parsers
2802 h264_parser_select="golomb h264dsp h264parse"
2803 hevc_parser_select="hevcparse"
2804 mpegaudio_parser_select="mpegaudioheader"
2805 mpegvideo_parser_select="mpegvideo"
2806 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2807 vc1_parser_select="vc1dsp"
2808
2809 # bitstream_filters
2810 mjpeg2jpeg_bsf_select="jpegtables"
2811
2812 # external libraries
2813 aac_at_decoder_deps="audiotoolbox"
2814 ac3_at_decoder_deps="audiotoolbox"
2815 ac3_at_decoder_select="ac3_parser"
2816 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2817 alac_at_decoder_deps="audiotoolbox"
2818 amr_nb_at_decoder_deps="audiotoolbox"
2819 avisynth_deps_any="dlopen LoadLibrary"
2820 avisynth_demuxer_deps="avisynth"
2821 avisynth_demuxer_select="riffdec"
2822 eac3_at_decoder_deps="audiotoolbox"
2823 eac3_at_decoder_select="ac3_parser"
2824 gsm_ms_at_decoder_deps="audiotoolbox"
2825 ilbc_at_decoder_deps="audiotoolbox"
2826 mp1_at_decoder_deps="audiotoolbox"
2827 mp2_at_decoder_deps="audiotoolbox"
2828 mp3_at_decoder_deps="audiotoolbox"
2829 mp1_at_decoder_select="mpegaudioheader"
2830 mp2_at_decoder_select="mpegaudioheader"
2831 mp3_at_decoder_select="mpegaudioheader"
2832 pcm_alaw_at_decoder_deps="audiotoolbox"
2833 pcm_mulaw_at_decoder_deps="audiotoolbox"
2834 qdmc_at_decoder_deps="audiotoolbox"
2835 qdm2_at_decoder_deps="audiotoolbox"
2836 aac_at_encoder_deps="audiotoolbox"
2837 aac_at_encoder_select="audio_frame_queue"
2838 alac_at_encoder_deps="audiotoolbox"
2839 alac_at_encoder_select="audio_frame_queue"
2840 ilbc_at_encoder_deps="audiotoolbox"
2841 ilbc_at_encoder_select="audio_frame_queue"
2842 pcm_alaw_at_encoder_deps="audiotoolbox"
2843 pcm_alaw_at_encoder_select="audio_frame_queue"
2844 pcm_mulaw_at_encoder_deps="audiotoolbox"
2845 pcm_mulaw_at_encoder_select="audio_frame_queue"
2846 chromaprint_muxer_deps="chromaprint"
2847 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2848 libcelt_decoder_deps="libcelt"
2849 libfdk_aac_decoder_deps="libfdk_aac"
2850 libfdk_aac_encoder_deps="libfdk_aac"
2851 libfdk_aac_encoder_select="audio_frame_queue"
2852 libgme_demuxer_deps="libgme"
2853 libgsm_decoder_deps="libgsm"
2854 libgsm_encoder_deps="libgsm"
2855 libgsm_ms_decoder_deps="libgsm"
2856 libgsm_ms_encoder_deps="libgsm"
2857 libilbc_decoder_deps="libilbc"
2858 libilbc_encoder_deps="libilbc"
2859 libkvazaar_encoder_deps="libkvazaar"
2860 libmodplug_demuxer_deps="libmodplug"
2861 libmp3lame_encoder_deps="libmp3lame"
2862 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2863 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2864 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2865 libopencore_amrnb_encoder_select="audio_frame_queue"
2866 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2867 libopenh264_decoder_deps="libopenh264"
2868 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2869 libopenh264_encoder_deps="libopenh264"
2870 libopenjpeg_decoder_deps="libopenjpeg"
2871 libopenjpeg_encoder_deps="libopenjpeg"
2872 libopenmpt_demuxer_deps="libopenmpt"
2873 libopus_decoder_deps="libopus"
2874 libopus_encoder_deps="libopus"
2875 libopus_encoder_select="audio_frame_queue"
2876 librsvg_decoder_deps="librsvg"
2877 libshine_encoder_deps="libshine"
2878 libshine_encoder_select="audio_frame_queue"
2879 libspeex_decoder_deps="libspeex"
2880 libspeex_encoder_deps="libspeex"
2881 libspeex_encoder_select="audio_frame_queue"
2882 libtheora_encoder_deps="libtheora"
2883 libtwolame_encoder_deps="libtwolame"
2884 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2885 libvorbis_decoder_deps="libvorbis"
2886 libvorbis_encoder_deps="libvorbis"
2887 libvorbis_encoder_select="audio_frame_queue"
2888 libvpx_vp8_decoder_deps="libvpx"
2889 libvpx_vp8_encoder_deps="libvpx"
2890 libvpx_vp9_decoder_deps="libvpx"
2891 libvpx_vp9_encoder_deps="libvpx"
2892 libwavpack_encoder_deps="libwavpack"
2893 libwavpack_encoder_select="audio_frame_queue"
2894 libwebp_encoder_deps="libwebp"
2895 libwebp_anim_encoder_deps="libwebp"
2896 libx262_encoder_deps="libx262"
2897 libx264_encoder_deps="libx264"
2898 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2899 libx264rgb_encoder_select="libx264_encoder"
2900 libx265_encoder_deps="libx265"
2901 libxavs_encoder_deps="libxavs"
2902 libxvid_encoder_deps="libxvid"
2903 libzvbi_teletext_decoder_deps="libzvbi"
2904 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2905 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2906 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2907 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2908 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2909
2910 # demuxers / muxers
2911 ac3_demuxer_select="ac3_parser"
2912 aiff_muxer_select="iso_media"
2913 asf_demuxer_select="riffdec"
2914 asf_o_demuxer_select="riffdec"
2915 asf_muxer_select="riffenc"
2916 asf_stream_muxer_select="asf_muxer"
2917 avi_demuxer_select="iso_media riffdec exif"
2918 avi_muxer_select="riffenc"
2919 caf_demuxer_select="iso_media riffdec"
2920 caf_muxer_select="iso_media"
2921 dash_muxer_select="mp4_muxer"
2922 dirac_demuxer_select="dirac_parser"
2923 dts_demuxer_select="dca_parser"
2924 dtshd_demuxer_select="dca_parser"
2925 dv_demuxer_select="dvprofile"
2926 dv_muxer_select="dvprofile"
2927 dxa_demuxer_select="riffdec"
2928 eac3_demuxer_select="ac3_parser"
2929 f4v_muxer_select="mov_muxer"
2930 fifo_muxer_deps="threads"
2931 flac_demuxer_select="flac_parser"
2932 hds_muxer_select="flv_muxer"
2933 hls_muxer_select="mpegts_muxer"
2934 image2_alias_pix_demuxer_select="image2_demuxer"
2935 image2_brender_pix_demuxer_select="image2_demuxer"
2936 ipod_muxer_select="mov_muxer"
2937 ismv_muxer_select="mov_muxer"
2938 matroska_audio_muxer_select="matroska_muxer"
2939 matroska_demuxer_select="iso_media riffdec"
2940 matroska_demuxer_suggest="bzlib lzo zlib"
2941 matroska_muxer_select="iso_media riffenc"
2942 mmf_muxer_select="riffenc"
2943 mov_demuxer_select="iso_media riffdec"
2944 mov_demuxer_suggest="zlib"
2945 mov_muxer_select="iso_media riffenc rtpenc_chain"
2946 mp3_demuxer_select="mpegaudio_parser"
2947 mp3_muxer_select="mpegaudioheader"
2948 mp4_muxer_select="mov_muxer"
2949 mpegts_demuxer_select="iso_media"
2950 mpegts_muxer_select="adts_muxer latm_muxer"
2951 mpegtsraw_demuxer_select="mpegts_demuxer"
2952 mxf_d10_muxer_select="mxf_muxer"
2953 mxf_opatom_muxer_select="mxf_muxer"
2954 nut_muxer_select="riffenc"
2955 nuv_demuxer_select="riffdec"
2956 oga_muxer_select="ogg_muxer"
2957 ogg_demuxer_select="dirac_parse"
2958 ogv_muxer_select="ogg_muxer"
2959 opus_muxer_select="ogg_muxer"
2960 psp_muxer_select="mov_muxer"
2961 rtp_demuxer_select="sdp_demuxer"
2962 rtp_muxer_select="golomb"
2963 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2964 rtsp_demuxer_select="http_protocol rtpdec"
2965 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2966 sap_demuxer_select="sdp_demuxer"
2967 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2968 sdp_demuxer_select="rtpdec"
2969 smoothstreaming_muxer_select="ismv_muxer"
2970 spdif_muxer_select="aac_parser"
2971 spx_muxer_select="ogg_muxer"
2972 swf_demuxer_suggest="zlib"
2973 tak_demuxer_select="tak_parser"
2974 tg2_muxer_select="mov_muxer"
2975 tgp_muxer_select="mov_muxer"
2976 vobsub_demuxer_select="mpegps_demuxer"
2977 w64_demuxer_select="wav_demuxer"
2978 w64_muxer_select="wav_muxer"
2979 wav_demuxer_select="riffdec"
2980 wav_muxer_select="riffenc"
2981 webm_muxer_select="iso_media riffenc"
2982 webm_dash_manifest_demuxer_select="matroska_demuxer"
2983 wtv_demuxer_select="mpegts_demuxer riffdec"
2984 wtv_muxer_select="mpegts_muxer riffenc"
2985 xmv_demuxer_select="riffdec"
2986 xwma_demuxer_select="riffdec"
2987
2988 # indevs / outdevs
2989 alsa_indev_deps="alsa"
2990 alsa_outdev_deps="alsa"
2991 avfoundation_indev_deps="pthreads"
2992 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2993 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2994 caca_outdev_deps="libcaca"
2995 decklink_indev_deps="decklink threads"
2996 decklink_indev_extralibs="-lstdc++"
2997 decklink_outdev_deps="decklink threads"
2998 decklink_outdev_extralibs="-lstdc++"
2999 dshow_indev_deps="IBaseFilter"
3000 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3001 dv1394_indev_deps="dv1394"
3002 dv1394_indev_select="dv_demuxer"
3003 fbdev_indev_deps="linux_fb_h"
3004 fbdev_outdev_deps="linux_fb_h"
3005 gdigrab_indev_deps="CreateDIBSection"
3006 gdigrab_indev_extralibs="-lgdi32"
3007 gdigrab_indev_select="bmp_decoder"
3008 iec61883_indev_deps="libiec61883"
3009 jack_indev_deps="jack"
3010 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3011 lavfi_indev_deps="avfilter"
3012 libcdio_indev_deps="libcdio"
3013 libdc1394_indev_deps="libdc1394"
3014 libv4l2_indev_deps="libv4l2"
3015 openal_indev_deps="openal"
3016 opengl_outdev_deps="opengl"
3017 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3018 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3019 pulse_indev_deps="libpulse"
3020 pulse_outdev_deps="libpulse"
3021 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
3022 qtkit_indev_select="qtkit"
3023 sdl2_outdev_deps="sdl2"
3024 sndio_indev_deps="sndio"
3025 sndio_outdev_deps="sndio"
3026 v4l_indev_deps="linux_videodev_h"
3027 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3028 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3029 vfwcap_indev_deps="vfw32 vfwcap_defines"
3030 xcbgrab_indev_deps="libxcb"
3031 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3032 xv_outdev_extralibs="-lXv -lX11 -lXext"
3033
3034 # protocols
3035 async_protocol_deps="threads"
3036 bluray_protocol_deps="libbluray"
3037 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3038 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3039 ffrtmpcrypt_protocol_select="tcp_protocol"
3040 ffrtmphttp_protocol_deps="!librtmp_protocol"
3041 ffrtmphttp_protocol_select="http_protocol"
3042 ftp_protocol_select="tcp_protocol"
3043 gopher_protocol_select="network"
3044 http_protocol_select="tcp_protocol"
3045 httpproxy_protocol_select="tcp_protocol"
3046 https_protocol_select="tls_protocol"
3047 icecast_protocol_select="http_protocol"
3048 librtmp_protocol_deps="librtmp"
3049 librtmpe_protocol_deps="librtmp"
3050 librtmps_protocol_deps="librtmp"
3051 librtmpt_protocol_deps="librtmp"
3052 librtmpte_protocol_deps="librtmp"
3053 libsmbclient_protocol_deps="libsmbclient gplv3"
3054 libssh_protocol_deps="libssh"
3055 mmsh_protocol_select="http_protocol"
3056 mmst_protocol_select="network"
3057 rtmp_protocol_deps="!librtmp_protocol"
3058 rtmp_protocol_select="tcp_protocol"
3059 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3060 rtmps_protocol_deps="!librtmp_protocol"
3061 rtmps_protocol_select="tls_protocol"
3062 rtmpt_protocol_select="ffrtmphttp_protocol"
3063 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3064 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3065 rtp_protocol_select="udp_protocol"
3066 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3067 sctp_protocol_select="network"
3068 srtp_protocol_select="rtp_protocol srtp"
3069 tcp_protocol_select="network"
3070 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3071 tls_gnutls_protocol_select="tcp_protocol"
3072 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3073 tls_openssl_protocol_select="tcp_protocol"
3074 tls_schannel_protocol_deps="schannel"
3075 tls_schannel_protocol_select="tcp_protocol"
3076 tls_securetransport_protocol_deps="securetransport"
3077 tls_securetransport_protocol_select="tcp_protocol"
3078 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3079 udp_protocol_select="network"
3080 udplite_protocol_select="network"
3081 unix_protocol_deps="sys_un_h"
3082 unix_protocol_select="network"
3083
3084 # filters
3085 afftfilt_filter_deps="avcodec"
3086 afftfilt_filter_select="fft"
3087 afir_filter_deps="avcodec"
3088 afir_filter_select="fft"
3089 amovie_filter_deps="avcodec avformat"
3090 aresample_filter_deps="swresample"
3091 ass_filter_deps="libass"
3092 atempo_filter_deps="avcodec"
3093 atempo_filter_select="rdft"
3094 azmq_filter_deps="libzmq"
3095 blackframe_filter_deps="gpl"
3096 boxblur_filter_deps="gpl"
3097 bs2b_filter_deps="libbs2b"
3098 colormatrix_filter_deps="gpl"
3099 cover_rect_filter_deps="avcodec avformat gpl"
3100 cropdetect_filter_deps="gpl"
3101 deinterlace_qsv_filter_deps="libmfx"
3102 deinterlace_vaapi_filter_deps="vaapi"
3103 delogo_filter_deps="gpl"
3104 deshake_filter_select="pixelutils"
3105 drawtext_filter_deps="libfreetype"
3106 elbg_filter_deps="avcodec"
3107 eq_filter_deps="gpl"
3108 fftfilt_filter_deps="avcodec"
3109 fftfilt_filter_select="rdft"
3110 find_rect_filter_deps="avcodec avformat gpl"
3111 firequalizer_filter_deps="avcodec"
3112 firequalizer_filter_select="rdft"
3113 flite_filter_deps="libflite"
3114 framerate_filter_select="pixelutils"
3115 frei0r_filter_deps="frei0r dlopen"
3116 frei0r_src_filter_deps="frei0r dlopen"
3117 fspp_filter_deps="gpl"
3118 geq_filter_deps="gpl"
3119 histeq_filter_deps="gpl"
3120 hqdn3d_filter_deps="gpl"
3121 interlace_filter_deps="gpl"
3122 kerndeint_filter_deps="gpl"
3123 ladspa_filter_deps="ladspa dlopen"
3124 mcdeint_filter_deps="avcodec gpl"
3125 movie_filter_deps="avcodec avformat"
3126 mpdecimate_filter_deps="gpl"
3127 mpdecimate_filter_select="pixelutils"
3128 mptestsrc_filter_deps="gpl"
3129 negate_filter_deps="lut_filter"
3130 nnedi_filter_deps="gpl"
3131 ocr_filter_deps="libtesseract"
3132 ocv_filter_deps="libopencv"
3133 owdenoise_filter_deps="gpl"
3134 pan_filter_deps="swresample"
3135 perspective_filter_deps="gpl"
3136 phase_filter_deps="gpl"
3137 pp7_filter_deps="gpl"
3138 pp_filter_deps="gpl postproc"
3139 pullup_filter_deps="gpl"
3140 removelogo_filter_deps="avcodec avformat swscale"
3141 repeatfields_filter_deps="gpl"
3142 resample_filter_deps="avresample"
3143 rubberband_filter_deps="librubberband"
3144 sab_filter_deps="gpl swscale"
3145 scale2ref_filter_deps="swscale"
3146 scale_filter_deps="swscale"
3147 scale_qsv_filter_deps="libmfx"
3148 select_filter_select="pixelutils"
3149 showcqt_filter_deps="avcodec avformat swscale"
3150 showcqt_filter_select="fft"
3151 showfreqs_filter_deps="avcodec"
3152 showfreqs_filter_select="fft"
3153 showspectrum_filter_deps="avcodec"
3154 showspectrum_filter_select="fft"
3155 showspectrumpic_filter_deps="avcodec"
3156 showspectrumpic_filter_select="fft"
3157 signature_filter_deps="gpl avcodec avformat"
3158 smartblur_filter_deps="gpl swscale"
3159 sofalizer_filter_deps="libmysofa avcodec"
3160 sofalizer_filter_select="fft"
3161 spectrumsynth_filter_deps="avcodec"
3162 spectrumsynth_filter_select="fft"
3163 spp_filter_deps="gpl avcodec"
3164 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3165 stereo3d_filter_deps="gpl"
3166 subtitles_filter_deps="avformat avcodec libass"
3167 super2xsai_filter_deps="gpl"
3168 pixfmts_super2xsai_test_deps="super2xsai_filter"
3169 tinterlace_filter_deps="gpl"
3170 tinterlace_merge_test_deps="tinterlace_filter"
3171 tinterlace_pad_test_deps="tinterlace_filter"
3172 uspp_filter_deps="gpl avcodec"
3173 vaguedenoiser_filter_deps="gpl"
3174 vidstabdetect_filter_deps="libvidstab"
3175 vidstabtransform_filter_deps="libvidstab"
3176 zmq_filter_deps="libzmq"
3177 zoompan_filter_deps="swscale"
3178 zscale_filter_deps="libzimg"
3179 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3180
3181 # examples
3182 avio_dir_cmd_deps="avformat avutil"
3183 avio_reading_deps="avformat avcodec avutil"
3184 decode_audio_example_deps="avcodec avutil"
3185 decode_video_example_deps="avcodec avutil"
3186 demuxing_decoding_example_deps="avcodec avformat avutil"
3187 encode_audio_example_deps="avcodec avutil"
3188 encode_video_example_deps="avcodec avutil"
3189 extract_mvs_example_deps="avcodec avformat avutil"
3190 filter_audio_example_deps="avfilter avutil"
3191 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3192 filtering_video_example_deps="avfilter avcodec avformat avutil"
3193 http_multiclient_example_deps="avformat avutil fork"
3194 metadata_example_deps="avformat avutil"
3195 muxing_example_deps="avcodec avformat avutil swscale"
3196 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3197 remuxing_example_deps="avcodec avformat avutil"
3198 resampling_audio_example_deps="avutil swresample"
3199 scaling_video_example_deps="avutil swscale"
3200 transcode_aac_example_deps="avcodec avformat swresample"
3201 transcoding_example_deps="avfilter avcodec avformat avutil"
3202
3203 # libraries, in linking order
3204 avcodec_deps="avutil"
3205 avcodec_select="null_bsf"
3206 avdevice_deps="avformat avcodec avutil"
3207 avfilter_deps="avutil"
3208 avformat_deps="avcodec avutil"
3209 avresample_deps="avutil"
3210 postproc_deps="avutil gpl"
3211 swresample_deps="avutil"
3212 swscale_deps="avutil"
3213
3214 # programs
3215 ffmpeg_deps="avcodec avfilter avformat swresample"
3216 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3217                null_filter
3218                trim_filter"
3219 ffplay_deps="avcodec avformat swscale swresample sdl2"
3220 ffplay_extralibs='$sdl2_extralibs'
3221 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3222 ffprobe_deps="avcodec avformat"
3223 ffserver_deps="avformat fork sarestart"
3224 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3225
3226 # documentation
3227 podpages_deps="perl"
3228 manpages_deps="perl pod2man"
3229 htmlpages_deps="perl"
3230 htmlpages_deps_any="makeinfo_html texi2html"
3231 txtpages_deps="perl makeinfo"
3232 doc_deps_any="manpages htmlpages podpages txtpages"
3233
3234 # default parameters
3235
3236 logfile="ffbuild/config.log"
3237
3238 # installation paths
3239 prefix_default="/usr/local"
3240 bindir_default='${prefix}/bin'
3241 datadir_default='${prefix}/share/ffmpeg'
3242 docdir_default='${prefix}/share/doc/ffmpeg'
3243 incdir_default='${prefix}/include'
3244 libdir_default='${prefix}/lib'
3245 mandir_default='${prefix}/share/man'
3246
3247 # toolchain
3248 ar_default="ar"
3249 cc_default="gcc"
3250 cxx_default="g++"
3251 host_cc_default="gcc"
3252 doxygen_default="doxygen"
3253 install="install"
3254 ln_s_default="ln -s -f"
3255 nm_default="nm -g"
3256 objformat="elf"
3257 pkg_config_default=pkg-config
3258 ranlib_default="ranlib"
3259 strip_default="strip"
3260 version_script='--version-script'
3261 yasmexe_default="yasm"
3262 windres_default="windres"
3263 nvcc_default="nvcc"
3264 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3265
3266 # OS
3267 target_os_default=$(tolower $(uname -s))
3268 host_os=$target_os_default
3269
3270 # machine
3271 if test "$target_os_default" = aix; then
3272     arch_default=$(uname -p)
3273     strip_default="strip -X32_64"
3274 else
3275     arch_default=$(uname -m)
3276 fi
3277 cpu="generic"
3278 intrinsics="none"
3279
3280 # configurable options
3281 enable $PROGRAM_LIST
3282 enable $DOCUMENT_LIST
3283 enable $EXAMPLE_LIST
3284 enable $(filter_out avresample $LIBRARY_LIST)
3285 enable stripping
3286
3287 enable asm
3288 enable debug
3289 enable doc
3290 enable faan faandct faanidct
3291 enable optimizations
3292 enable runtime_cpudetect
3293 enable safe_bitstream_reader
3294 enable static
3295 enable swscale_alpha
3296 enable valgrind_backtrace
3297
3298 sws_max_filter_size_default=256
3299 set_default sws_max_filter_size
3300
3301 # build settings
3302 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3303 LIBPREF="lib"
3304 LIBSUF=".a"
3305 FULLNAME='$(NAME)$(BUILDSUF)'
3306 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3307 SLIBPREF="lib"
3308 SLIBSUF=".so"
3309 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3310 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3311 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3312 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3313 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3314 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3315 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3316
3317 asflags_filter=echo
3318 cflags_filter=echo
3319 ldflags_filter=echo
3320
3321 AS_C='-c'
3322 AS_O='-o $@'
3323 CC_C='-c'
3324 CC_E='-E -o $@'
3325 CC_O='-o $@'
3326 CXX_C='-c'
3327 CXX_O='-o $@'
3328 OBJCC_C='-c'
3329 OBJCC_E='-E -o $@'
3330 OBJCC_O='-o $@'
3331 LD_O='-o $@'
3332 LD_LIB='-l%'
3333 LD_PATH='-L'
3334 HOSTCC_C='-c'
3335 HOSTCC_E='-E -o $@'
3336 HOSTCC_O='-o $@'
3337 HOSTLD_O='-o $@'
3338 NVCC_C='-c'
3339 NVCC_O='-o $@'
3340
3341 host_extralibs='-lm'
3342 host_cflags_filter=echo
3343 host_ldflags_filter=echo
3344
3345 target_path='$(CURDIR)'
3346
3347 # since the object filename is not given with the -MM flag, the compiler
3348 # is only able to print the basename, and we must add the path ourselves
3349 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3350 DEPFLAGS='-MM'
3351
3352 # find source path
3353 if test -f configure; then
3354     source_path=.
3355 else
3356     source_path=$(cd $(dirname "$0"); pwd)
3357     case "$source_path" in
3358         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3359     esac
3360     test -e "$source_path/config.h" &&
3361         die "Out of tree builds are impossible with config.h in source dir."
3362 fi
3363
3364 for v in "$@"; do
3365     r=${v#*=}
3366     l=${v%"$r"}
3367     r=$(sh_quote "$r")
3368     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3369 done
3370
3371 find_things(){
3372     thing=$1
3373     pattern=$2
3374     file=$source_path/$3
3375     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3376 }
3377
3378 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3379 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3380 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3381 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3382 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3383 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3384 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3385 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3386 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3387
3388 find_things_extern(){
3389     thing=$1
3390     pattern=$2
3391     file=$source_path/$3
3392     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3393 }
3394
3395 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3396 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3397
3398 ALL_COMPONENTS="
3399     $BSF_LIST
3400     $DECODER_LIST
3401     $DEMUXER_LIST
3402     $ENCODER_LIST
3403     $FILTER_LIST
3404     $HWACCEL_LIST
3405     $INDEV_LIST
3406     $MUXER_LIST
3407     $OUTDEV_LIST
3408     $PARSER_LIST
3409     $PROTOCOL_LIST
3410 "
3411
3412 for n in $COMPONENT_LIST; do
3413     v=$(toupper ${n%s})_LIST
3414     eval enable \$$v
3415     eval ${n}_if_any="\$$v"
3416 done
3417
3418 enable $ARCH_EXT_LIST
3419
3420 die_unknown(){
3421     echo "Unknown option \"$1\"."
3422     echo "See $0 --help for available options."
3423     exit 1
3424 }
3425
3426 print_in_columns() {
3427     cols=$(expr $ncols / 24)
3428     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3429 }
3430
3431 show_list() {
3432     suffix=_$1
3433     shift
3434     echo $* | sed s/$suffix//g | print_in_columns
3435     exit 0
3436 }
3437
3438 rand_list(){
3439     IFS=', '
3440     set -- $*
3441     unset IFS
3442     for thing; do
3443         comp=${thing%:*}
3444         prob=${thing#$comp}
3445         prob=${prob#:}
3446         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3447         echo "prob ${prob:-0.5}"
3448         printf '%s\n' $comp
3449     done
3450 }
3451
3452 do_random(){
3453     action=$1
3454     shift
3455     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3456     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3457 }
3458
3459 for opt do
3460     optval="${opt#*=}"
3461     case "$opt" in
3462         --extra-ldflags=*)
3463             add_ldflags $optval
3464         ;;
3465         --extra-ldexeflags=*)
3466             add_ldexeflags $optval
3467         ;;
3468         --extra-ldlibflags=*)
3469             add_ldlibflags $optval
3470         ;;
3471         --extra-libs=*)
3472             add_extralibs $optval
3473         ;;
3474         --disable-devices)
3475             disable $INDEV_LIST $OUTDEV_LIST
3476         ;;
3477         --enable-debug=*)
3478             debuglevel="$optval"
3479         ;;
3480         --disable-programs)
3481             disable $PROGRAM_LIST
3482         ;;
3483         --disable-everything)
3484             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3485         ;;
3486         --disable-all)
3487             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3488             disable $LIBRARY_LIST $PROGRAM_LIST doc
3489             enable avutil
3490         ;;
3491         --enable-random|--disable-random)
3492             action=${opt%%-random}
3493             do_random ${action#--} $COMPONENT_LIST
3494         ;;
3495         --enable-random=*|--disable-random=*)
3496             action=${opt%%-random=*}
3497             do_random ${action#--} $optval
3498         ;;
3499         --enable-*=*|--disable-*=*)
3500             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3501             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3502             eval list=\$$(toupper $thing)_LIST
3503             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3504             list=$(filter "$name" $list)
3505             [ "$list" = "" ] && warn "Option $opt did not match anything"
3506             $action $list
3507         ;;
3508         --enable-?*|--disable-?*)
3509             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3510             if is_in $option $COMPONENT_LIST; then
3511                 test $action = disable && action=unset
3512                 eval $action \$$(toupper ${option%s})_LIST
3513             elif is_in $option $CMDLINE_SELECT; then
3514                 $action $option
3515             else
3516                 die_unknown $opt
3517             fi
3518         ;;
3519         --list-*)
3520             NAME="${opt#--list-}"
3521             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3522             NAME=${NAME%s}
3523             eval show_list $NAME \$$(toupper $NAME)_LIST
3524         ;;
3525         --help|-h) show_help
3526         ;;
3527         --quiet|-q) quiet=yes
3528         ;;
3529         --fatal-warnings) enable fatal_warnings
3530         ;;
3531         --libfuzzer=*)
3532             libfuzzer_path="$optval"
3533         ;;
3534         *)
3535             optname="${opt%%=*}"
3536             optname="${optname#--}"
3537             optname=$(echo "$optname" | sed 's/-/_/g')
3538             if is_in $optname $CMDLINE_SET; then
3539                 eval $optname='$optval'
3540             elif is_in $optname $CMDLINE_APPEND; then
3541                 append $optname "$optval"
3542             else
3543                 die_unknown $opt
3544             fi
3545         ;;
3546     esac
3547 done
3548
3549 for e in $env; do
3550     eval "export $e"
3551 done
3552
3553 # Mark specifically enabled, but normally autodetected libraries as requested.
3554 for lib in $AUTODETECT_LIBS; do
3555     enabled $lib && request $lib
3556 done
3557
3558 # Enable platform codecs by default.
3559 enable_weak audiotoolbox
3560
3561 # Enable hwaccels by default.
3562 enable_weak d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3563 enable_weak xlib
3564
3565 enable_weak cuda cuvid nvenc vda_framework videotoolbox videotoolbox_encoder
3566
3567 disabled logging && logfile=/dev/null
3568
3569 die_license_disabled() {
3570     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3571 }
3572
3573 die_license_disabled_gpl() {
3574     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3575 }
3576
3577 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3578 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3579
3580 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3581 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3582
3583 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3584
3585 # Disable all the library-specific components if the library itself
3586 # is disabled, see AVCODEC_LIST and following _LIST variables.
3587
3588 disable_components(){
3589     disabled ${1} && disable $(
3590         eval components="\$$(toupper ${1})_COMPONENTS"
3591         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3592     )
3593 }
3594
3595 map 'disable_components $v' $LIBRARY_LIST
3596
3597 mkdir -p ffbuild
3598 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3599 set >> $logfile
3600
3601 test -n "$valgrind" && toolchain="valgrind-memcheck"
3602
3603 enabled ossfuzz && {
3604     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3605     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3606 }
3607
3608 case "$toolchain" in
3609     *-asan)
3610         cc_default="${toolchain%-asan}"
3611         add_cflags  -fsanitize=address
3612         add_ldflags -fsanitize=address
3613     ;;
3614     *-msan)
3615         cc_default="${toolchain%-msan}"
3616         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3617         add_ldflags -fsanitize=memory
3618     ;;
3619     *-tsan)
3620         cc_default="${toolchain%-tsan}"
3621         add_cflags  -fsanitize=thread -fPIE
3622         add_ldflags -fsanitize=thread -pie
3623         case "$toolchain" in
3624             gcc-tsan)
3625                 add_cflags  -fPIC
3626                 add_ldflags -fPIC
3627                 ;;
3628         esac
3629     ;;
3630     *-usan)
3631         cc_default="${toolchain%-usan}"
3632         add_cflags  -fsanitize=undefined
3633         add_ldflags -fsanitize=undefined
3634     ;;
3635     valgrind-*)
3636         target_exec_default="valgrind"
3637         case "$toolchain" in
3638             valgrind-massif)
3639                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3640                 ;;
3641             valgrind-memcheck)
3642                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3643                 ;;
3644         esac
3645     ;;
3646     msvc)
3647         # Check whether the current MSVC version needs the C99 converter.
3648         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3649         # support enough of C99 to build ffmpeg. Default to the new
3650         # behaviour if the regexp was unable to match anything, since this
3651         # successfully parses the version number of existing supported
3652         # versions that require the converter (MSVC 2010 and 2012).
3653         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3654         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3655             cc_default="cl"
3656             cxx_default="cl"
3657         else
3658             cc_default="c99wrap cl"
3659             cxx_default="c99wrap cl"
3660         fi
3661         ld_default="$source_path/compat/windows/mslink"
3662         nm_default="dumpbin -symbols"
3663         ar_default="lib"
3664         case "$arch" in
3665         arm*)
3666             as_default="armasm"
3667             ;;
3668         esac
3669         target_os_default="win32"
3670         # Use a relative path for TMPDIR. This makes sure all the
3671         # ffconf temp files are written with a relative path, avoiding
3672         # issues with msys/win32 path conversion for MSVC parameters
3673         # such as -Fo<file> or -out:<file>.
3674         TMPDIR=.
3675     ;;
3676     icl)
3677         cc_default="icl"
3678         ld_default="xilink"
3679         nm_default="dumpbin -symbols"
3680         ar_default="xilib"
3681         target_os_default="win32"
3682         TMPDIR=.
3683     ;;
3684     gcov)
3685         add_cflags  -fprofile-arcs -ftest-coverage
3686         add_ldflags -fprofile-arcs -ftest-coverage
3687     ;;
3688     llvm-cov)
3689         add_cflags -fprofile-arcs -ftest-coverage
3690         add_ldflags --coverage
3691     ;;
3692     hardened)
3693         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3694         add_cflags   -fno-strict-overflow -fstack-protector-all
3695         add_ldflags  -Wl,-z,relro -Wl,-z,now
3696         add_cflags   -fPIE
3697         add_ldexeflags -fPIE -pie
3698     ;;
3699     ?*)
3700         die "Unknown toolchain $toolchain"
3701     ;;
3702 esac
3703
3704 test -n "$cross_prefix" && enable cross_compile
3705
3706 if enabled cross_compile; then
3707     test -n "$arch" && test -n "$target_os" ||
3708         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3709 fi
3710
3711 ar_default="${cross_prefix}${ar_default}"
3712 cc_default="${cross_prefix}${cc_default}"
3713 cxx_default="${cross_prefix}${cxx_default}"
3714 nm_default="${cross_prefix}${nm_default}"
3715 pkg_config_default="${cross_prefix}${pkg_config_default}"
3716 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3717     ranlib_default="${cross_prefix}${ranlib_default} -D"
3718 else
3719     ranlib_default="${cross_prefix}${ranlib_default}"
3720 fi
3721 strip_default="${cross_prefix}${strip_default}"
3722 windres_default="${cross_prefix}${windres_default}"
3723
3724 sysinclude_default="${sysroot}/usr/include"
3725
3726 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3727     target_exec target_os yasmexe nvcc
3728 enabled cross_compile || host_cc_default=$cc
3729 set_default host_cc
3730
3731 pkg_config_fail_message=""
3732 if ! $pkg_config --version >/dev/null 2>&1; then
3733     warn "$pkg_config not found, library detection may fail."
3734     pkg_config=false
3735 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3736     pkg_config_fail_message="
3737 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3738 fi
3739
3740 if test $doxygen != $doxygen_default && \
3741   ! $doxygen --version >/dev/null 2>&1; then
3742     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3743 fi
3744
3745 exesuf() {
3746     case $1 in
3747         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3748     esac
3749 }
3750
3751 EXESUF=$(exesuf $target_os)
3752 HOSTEXESUF=$(exesuf $host_os)
3753
3754 # set temporary file name
3755 : ${TMPDIR:=$TEMPDIR}
3756 : ${TMPDIR:=$TMP}
3757 : ${TMPDIR:=/tmp}
3758
3759 if [ -n "$tempprefix" ] ; then
3760     mktemp(){
3761         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3762         echo "$tmpname"
3763         mkdir "$tmpname"
3764     }
3765 elif ! check_cmd mktemp -u XXXXXX; then
3766     # simple replacement for missing mktemp
3767     # NOT SAFE FOR GENERAL USE
3768     mktemp(){
3769         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3770         echo "$tmpname"
3771         mkdir "$tmpname"
3772     }
3773 fi
3774
3775 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3776     die "Unable to create temporary directory in $TMPDIR."
3777
3778 tmpfile(){
3779     tmp="${FFTMPDIR}/test"$2
3780     (set -C; exec > $tmp) 2> /dev/null ||
3781         die "Unable to create temporary file in $FFTMPDIR."
3782     eval $1=$tmp
3783 }
3784
3785 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3786 trap 'exit 2' INT
3787
3788 tmpfile TMPASM .asm
3789 tmpfile TMPC   .c
3790 tmpfile TMPCPP .cpp
3791 tmpfile TMPE   $EXESUF
3792 tmpfile TMPH   .h
3793 tmpfile TMPM   .m
3794 tmpfile TMPO   .o
3795 tmpfile TMPS   .S
3796 tmpfile TMPSH  .sh
3797 tmpfile TMPV   .ver
3798
3799 unset -f mktemp
3800
3801 chmod +x $TMPE
3802
3803 # make sure we can execute files in $TMPDIR
3804 cat > $TMPSH 2>> $logfile <<EOF
3805 #! /bin/sh
3806 EOF
3807 chmod +x $TMPSH >> $logfile 2>&1
3808 if ! $TMPSH >> $logfile 2>&1; then
3809     cat <<EOF
3810 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3811 variable to another directory and make sure that it is not mounted noexec.
3812 EOF
3813     die "Sanity test failed."
3814 fi
3815
3816 armasm_flags(){
3817     for flag; do
3818         case $flag in
3819             # Filter out MSVC cl.exe options from cflags that shouldn't
3820             # be passed to gas-preprocessor
3821             -M[TD]*)                                            ;;
3822             *)                  echo $flag                      ;;
3823         esac
3824    done
3825 }
3826
3827 ccc_flags(){
3828     for flag; do
3829         case $flag in
3830             -std=c99)           echo -c99                       ;;
3831             -mcpu=*)            echo -arch ${flag#*=}           ;;
3832             -mieee)             echo -ieee                      ;;
3833             -O*|-fast)          echo $flag                      ;;
3834             -fno-math-errno)    echo -assume nomath_errno       ;;
3835             -g)                 echo -g3                        ;;
3836             -Wall)              echo -msg_enable level2         ;;
3837             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3838             -Wl,*)              echo $flag                      ;;
3839             -f*|-W*)                                            ;;
3840             *)                  echo $flag                      ;;
3841         esac
3842    done
3843 }
3844
3845 cparser_flags(){
3846     for flag; do
3847         case $flag in
3848             -Wno-switch)             echo -Wno-switch-enum ;;
3849             -Wno-format-zero-length) ;;
3850             -Wdisabled-optimization) ;;
3851             -Wno-pointer-sign)       echo -Wno-other ;;
3852             *)                       echo $flag ;;
3853         esac
3854     done
3855 }
3856
3857 msvc_common_flags(){
3858     for flag; do
3859         case $flag in
3860             # In addition to specifying certain flags under the compiler
3861             # specific filters, they must be specified here as well or else the
3862             # generic catch all at the bottom will print the original flag.
3863             -Wall)                ;;
3864             -Wextra)              ;;
3865             -std=c99)             ;;
3866             # Common flags
3867             -fomit-frame-pointer) ;;
3868             -g)                   echo -Z7 ;;
3869             -fno-math-errno)      ;;
3870             -fno-common)          ;;
3871             -fno-signed-zeros)    ;;
3872             -fPIC)                ;;
3873             -mthumb)              ;;
3874             -march=*)             ;;
3875             -lz)                  echo zlib.lib ;;
3876             -lx264)               echo libx264.lib ;;
3877             -lstdc++)             ;;
3878             -l*)                  echo ${flag#-l}.lib ;;
3879             -LARGEADDRESSAWARE)   echo $flag ;;
3880             -L*)                  echo -libpath:${flag#-L} ;;
3881             *)                    echo $flag ;;
3882         esac
3883     done
3884 }
3885
3886 msvc_flags(){
3887     msvc_common_flags "$@"
3888     for flag; do
3889         case $flag in
3890             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3891                                        -wd4554 ;;
3892             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3893                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3894                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3895                                        -wd4307 \
3896                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3897         esac
3898     done
3899 }
3900
3901 icl_flags(){
3902     msvc_common_flags "$@"
3903     for flag; do
3904         case $flag in
3905             # Despite what Intel's documentation says -Wall, which is supported
3906             # on Windows, does enable remarks so disable them here.
3907             -Wall)                echo $flag -Qdiag-disable:remark ;;
3908             -std=c99)             echo -Qstd=c99 ;;
3909             -flto)                echo -ipo ;;
3910         esac
3911     done
3912 }
3913
3914 icc_flags(){
3915     for flag; do
3916         case $flag in
3917             -flto)                echo -ipo ;;
3918             *)                    echo $flag ;;
3919         esac
3920     done
3921 }
3922
3923 pgi_flags(){
3924     for flag; do
3925         case $flag in
3926             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3927             -fomit-frame-pointer) echo -Mnoframe ;;
3928             -g)                   echo -gopt ;;
3929             *)                    echo $flag ;;
3930         esac
3931     done
3932 }
3933
3934 suncc_flags(){
3935     for flag; do
3936         case $flag in
3937             -march=*|-mcpu=*)
3938                 case "${flag#*=}" in
3939                     native)                   echo -xtarget=native       ;;
3940                     v9|niagara)               echo -xarch=sparc          ;;
3941                     ultrasparc)               echo -xarch=sparcvis       ;;
3942                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3943                     i586|pentium)             echo -xchip=pentium        ;;
3944                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3945                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3946                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3947                     pentium4*)          echo -xtarget=pentium4           ;;
3948                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3949                     *-sse3)             echo -xarch=sse3                 ;;
3950                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3951                     bonnell)                   echo -xarch=ssse3         ;;
3952                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3953                     westmere)                  echo -xtarget=westmere    ;;
3954                     silvermont)                echo -xarch=sse4_2        ;;
3955                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3956                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3957                                                echo -xarch=avx           ;;
3958                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3959                     btver1)                    echo -xarch=amdsse4a      ;;
3960                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3961                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3962                     k8|opteron|athlon64|athlon-fx)
3963                                                echo -xarch=sse2a         ;;
3964                     athlon*)                   echo -xarch=pentium_proa  ;;
3965                 esac
3966                 ;;
3967             -std=c99)             echo -xc99              ;;
3968             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3969             -fPIC)                echo -KPIC -xcode=pic32 ;;
3970             -W*,*)                echo $flag              ;;
3971             -f*-*|-W*|-mimpure-text)                      ;;
3972             -shared)              echo -G                 ;;
3973             *)                    echo $flag              ;;
3974         esac
3975     done
3976 }
3977
3978 tms470_flags(){
3979     for flag; do
3980         case $flag in
3981             -march=*|-mcpu=*)
3982                 case "${flag#*=}" in
3983                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3984                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3985                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3986                     armv6*|arm11*)          echo -mv=6   ;;
3987                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3988                                             echo -mv=5e  ;;
3989                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3990                 esac
3991                 ;;
3992             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3993             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3994             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3995             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3996             -msoft-float)   echo --float_support=vfplib       ;;
3997             -O[0-3]|-mf=*)  echo $flag                        ;;
3998             -g)             echo -g -mn                       ;;
3999             -pds=*)         echo $flag                        ;;
4000             -D*|-I*)        echo $flag                        ;;
4001             --gcc|--abi=*)  echo $flag                        ;;
4002             -me)            echo $flag                        ;;
4003         esac
4004     done
4005 }
4006
4007 probe_cc(){
4008     pfx=$1
4009     _cc=$2
4010     first=$3
4011
4012     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4013     unset _ld_o _ldflags _ld_lib _ld_path
4014     unset _depflags _DEPCMD _DEPFLAGS
4015     _flags_filter=echo
4016
4017     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4018         true # no-op to avoid reading stdin in following checks
4019     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4020         _type=llvm_gcc
4021         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4022         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4023         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4024         _cflags_speed='-O3'
4025         _cflags_size='-Os'
4026     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4027         _type=gcc
4028         gcc_version=$($_cc --version | head -n1)
4029         gcc_basever=$($_cc -dumpversion)
4030         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4031         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4032         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4033         case $gcc_basever in
4034             2) ;;
4035             2.*) ;;
4036             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4037         esac
4038         if [ "$first" = true ]; then
4039             case $gcc_basever in
4040                 4.2*)
4041                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4042             esac
4043         fi
4044         _cflags_speed='-O3'
4045         _cflags_size='-Os'
4046     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4047         _type=icc
4048         _ident=$($_cc --version | head -n1)
4049         _depflags='-MMD'
4050         _cflags_speed='-O3'
4051         _cflags_size='-Os'
4052         _cflags_noopt='-O1'
4053         _flags_filter=icc_flags
4054     elif $_cc -v 2>&1 | grep -q xlc; then
4055         _type=xlc
4056         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4057         _cflags_speed='-O5'
4058         _cflags_size='-O5 -qcompact'
4059     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4060         _type=ccc
4061         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4062         _DEPFLAGS='-M'
4063         _cflags_speed='-fast'
4064         _cflags_size='-O1'
4065         _flags_filter=ccc_flags
4066     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4067         test -d "$sysroot" || die "No valid sysroot specified."
4068         _type=armcc
4069         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4070         armcc_conf="$PWD/armcc.conf"
4071         $_cc --arm_linux_configure                 \
4072              --arm_linux_config_file="$armcc_conf" \
4073              --configure_sysroot="$sysroot"        \
4074              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4075              die "Error creating armcc configuration file."
4076         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4077         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4078         as_default="${cross_prefix}gcc"
4079         _depflags='-MMD'
4080         _cflags_speed='-O3'
4081         _cflags_size='-Os'
4082     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4083         _type=tms470
4084         _ident=$($_cc -version | head -n1 | tr -s ' ')
4085         _flags='--gcc --abi=eabi -me'
4086         _cc_e='-ppl -fe=$@'
4087         _cc_o='-fe=$@'
4088         _depflags='-ppa -ppd=$(@:.o=.d)'
4089         _cflags_speed='-O3 -mf=5'
4090         _cflags_size='-O3 -mf=2'
4091         _flags_filter=tms470_flags
4092     elif $_cc -v 2>&1 | grep -q clang; then
4093         _type=clang
4094         _ident=$($_cc --version 2>/dev/null | head -n1)
4095         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4096         _cflags_speed='-O3'
4097         _cflags_size='-Oz'
4098     elif $_cc -V 2>&1 | grep -q Sun; then
4099         _type=suncc
4100         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4101         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4102         _DEPFLAGS='-xM1 -xc99'
4103         _ldflags='-std=c99'
4104         _cflags_speed='-O5'
4105         _cflags_size='-O5 -xspace'
4106         _flags_filter=suncc_flags
4107     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4108         _type=pathscale
4109         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4110         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4111         _cflags_speed='-O2'
4112         _cflags_size='-Os'
4113         _flags_filter='filter_out -Wdisabled-optimization'
4114     elif $_cc -v 2>&1 | grep -q Open64; then
4115         _type=open64
4116         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4117         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4118         _cflags_speed='-O2'
4119         _cflags_size='-Os'
4120         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4121     elif $_cc -V 2>&1 | grep -q Portland; then
4122         _type=pgi
4123         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4124         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4125         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4126         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4127         _cflags_noopt="-O"
4128         _flags_filter=pgi_flags
4129     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4130         _type=armasm
4131         _ident=$($_cc | head -n1)
4132         # 4509: "This form of conditional instruction is deprecated"
4133         _flags="-nologo -ignore 4509"
4134         _flags_filter=armasm_flags
4135     elif $_cc 2>&1 | grep -q Intel; then
4136         _type=icl
4137         _ident=$($_cc 2>&1 | head -n1)
4138         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4139         # Not only is O3 broken on 13.x+ but it is slower on all previous
4140         # versions (tested) as well.
4141         _cflags_speed="-O2"
4142         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4143         if $_cc 2>&1 | grep -q Linker; then
4144             _ld_o='-out:$@'
4145         else
4146             _ld_o='-Fe$@'
4147         fi
4148         _cc_o='-Fo$@'
4149         _cc_e='-P'
4150         _flags_filter=icl_flags
4151         _ld_lib='lib%.a'
4152         _ld_path='-libpath:'
4153         # -Qdiag-error to make icl error when seeing certain unknown arguments
4154         _flags='-nologo -Qdiag-error:4044,10157'
4155         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4156         # with MSVC which enables it by default.
4157         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4158         disable stripping
4159     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4160         # lld can emulate multiple different linkers; in ms link.exe mode,
4161         # the -? parameter gives the help output which contains an identifyable
4162         # string, while it gives an error in other modes.
4163         _type=lld-link
4164         # The link.exe mode doesn't have a switch for getting the version,
4165         # but we can force it back to gnu mode and get the version from there.
4166         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4167         _ld_o='-out:$@'
4168         _flags_filter=msvc_flags
4169         _ld_lib='lib%.a'
4170         _ld_path='-libpath:'
4171     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4172         _type=msvc
4173         _ident=$($_cc 2>&1 | head -n1)
4174         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4175         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4176         _cflags_speed="-O2"
4177         _cflags_size="-O1"
4178         _cflags_noopt="-O1"
4179         if $_cc -nologo- 2>&1 | grep -q Linker; then
4180             _ld_o='-out:$@'
4181         else
4182             _ld_o='-Fe$@'
4183         fi
4184         _cc_o='-Fo$@'
4185         _cc_e='-P -Fi$@'
4186         _flags_filter=msvc_flags
4187         _ld_lib='lib%.a'
4188         _ld_path='-libpath:'
4189         _flags='-nologo'
4190         disable stripping
4191     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4192         _type=cparser
4193         _ident=$($_cc --version | head -n1)
4194         _depflags='-MMD'
4195         _cflags_speed='-O4'
4196         _cflags_size='-O2'
4197         _flags_filter=cparser_flags
4198     fi
4199
4200     eval ${pfx}_type=\$_type
4201     eval ${pfx}_ident=\$_ident
4202 }
4203
4204 set_ccvars(){
4205     eval ${1}_C=\${_cc_c-\${${1}_C}}
4206     eval ${1}_E=\${_cc_e-\${${1}_E}}
4207     eval ${1}_O=\${_cc_o-\${${1}_O}}
4208
4209     if [ -n "$_depflags" ]; then
4210         eval ${1}_DEPFLAGS=\$_depflags
4211     else
4212         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4213         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4214         eval DEP${1}FLAGS=\$_flags
4215     fi
4216 }
4217
4218 probe_cc cc "$cc" "true"
4219 cflags_filter=$_flags_filter
4220 cflags_speed=$_cflags_speed
4221 cflags_size=$_cflags_size
4222 cflags_noopt=$_cflags_noopt
4223 add_cflags $_flags $_cflags
4224 cc_ldflags=$_ldflags
4225 set_ccvars CC
4226 set_ccvars CXX
4227
4228 probe_cc hostcc "$host_cc"
4229 host_cflags_filter=$_flags_filter
4230 host_cflags_speed=$_cflags_speed
4231 add_host_cflags  $_flags $_cflags
4232 set_ccvars HOSTCC
4233
4234 test -n "$cc_type" && enable $cc_type ||
4235     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4236
4237 : ${as_default:=$cc}
4238 : ${objcc_default:=$cc}
4239 : ${dep_cc_default:=$cc}
4240 : ${ld_default:=$cc}
4241 : ${host_ld_default:=$host_cc}
4242 set_default ar as objcc dep_cc ld ln_s host_ld windres
4243
4244 probe_cc as "$as"
4245 asflags_filter=$_flags_filter
4246 add_asflags $_flags $_cflags
4247 set_ccvars AS
4248
4249 probe_cc objcc "$objcc"
4250 objcflags_filter=$_flags_filter
4251 add_objcflags $_flags $_cflags
4252 set_ccvars OBJC
4253
4254 probe_cc ld "$ld"
4255 ldflags_filter=$_flags_filter
4256 add_ldflags $_flags $_ldflags
4257 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4258 LD_O=${_ld_o-$LD_O}
4259 LD_LIB=${_ld_lib-$LD_LIB}
4260 LD_PATH=${_ld_path-$LD_PATH}
4261
4262 probe_cc hostld "$host_ld"
4263 host_ldflags_filter=$_flags_filter
4264 add_host_ldflags $_flags $_ldflags
4265 HOSTLD_O=${_ld_o-$HOSTLD_O}
4266
4267 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4268     probe_cc depcc "$dep_cc"
4269     CCDEP=${_DEPCMD:-$DEPCMD}
4270     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4271     DEPCCFLAGS=$_flags
4272 fi
4273
4274 if $ar 2>&1 | grep -q Microsoft; then
4275     arflags="-nologo"
4276     ar_o='-out:$@'
4277 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4278     arflags="rq"
4279     ar_o='$@'
4280 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4281     arflags='-Xany -r -c'
4282     ar_o='$@'
4283 elif $ar 2>&1 | grep -q "\[D\] "; then
4284     arflags="rcD"
4285     ar_o='$@'
4286 else
4287     arflags="rc"
4288     ar_o='$@'
4289 fi
4290
4291 add_cflags $extra_cflags
4292 add_cxxflags $extra_cxxflags
4293 add_objcflags $extra_objcflags
4294 add_asflags $extra_cflags
4295
4296 if test -n "$sysroot"; then
4297     case "$cc_type" in
4298         gcc|llvm_gcc|clang)
4299             add_cppflags --sysroot="$sysroot"
4300             add_ldflags --sysroot="$sysroot"
4301 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4302             add_cppflags -isysroot "$sysroot"
4303             add_ldflags -isysroot "$sysroot"
4304         ;;
4305         tms470)
4306             add_cppflags -I"$sysinclude"
4307             add_ldflags  --sysroot="$sysroot"
4308         ;;
4309     esac
4310 fi
4311
4312 if test "$cpu" = host; then
4313     enabled cross_compile &&
4314         die "--cpu=host makes no sense when cross-compiling."
4315
4316     case "$cc_type" in
4317         gcc|llvm_gcc)
4318             check_native(){
4319                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4320                 sed -n "/cc1.*$1=/{
4321                             s/.*$1=\\([^ ]*\\).*/\\1/
4322                             p
4323                             q
4324                         }" $TMPE
4325             }
4326             cpu=$(check_native -march || check_native -mcpu)
4327         ;;
4328         clang)
4329             check_native(){
4330                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4331                 sed -n "/cc1.*-target-cpu /{
4332                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4333                             p
4334                             q
4335                         }" $TMPE
4336             }
4337             cpu=$(check_native -march)
4338         ;;
4339     esac
4340
4341     test "${cpu:-host}" = host &&
4342         die "--cpu=host not supported with compiler $cc"
4343 fi
4344
4345 # Deal with common $arch aliases
4346 case "$arch" in
4347     aarch64|arm64)
4348         arch="aarch64"
4349     ;;
4350     arm*|iPad*|iPhone*)
4351         arch="arm"
4352     ;;
4353     mips*|IP*)
4354         case "$arch" in
4355         *el)
4356             add_cppflags -EL
4357             add_ldflags -EL
4358         ;;
4359         *eb)
4360             add_cppflags -EB
4361             add_ldflags -EB
4362         ;;
4363         esac
4364         arch="mips"
4365     ;;
4366     parisc*|hppa*)
4367         arch="parisc"
4368     ;;
4369     "Power Macintosh"|ppc*|powerpc*)
4370         arch="ppc"
4371     ;;
4372     s390|s390x)
4373         arch="s390"
4374     ;;
4375     sh4|sh)
4376         arch="sh4"
4377     ;;
4378     sun4*|sparc*)
4379         arch="sparc"
4380     ;;
4381     tilegx|tile-gx)
4382         arch="tilegx"
4383     ;;
4384     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4385         arch="x86"
4386     ;;
4387 esac
4388
4389 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4390 enable $arch
4391
4392 # Add processor-specific flags
4393 if enabled aarch64; then
4394
4395     case $cpu in
4396         armv*)
4397             cpuflags="-march=$cpu"
4398         ;;
4399         *)
4400             cpuflags="-mcpu=$cpu"
4401         ;;
4402     esac
4403
4404 elif enabled alpha; then
4405
4406     cpuflags="-mcpu=$cpu"
4407
4408 elif enabled arm; then
4409
4410     check_arm_arch() {
4411         check_cpp_condition stddef.h \
4412             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4413             $cpuflags
4414     }
4415
4416     probe_arm_arch() {
4417         if   check_arm_arch 4;        then echo armv4
4418         elif check_arm_arch 4T;       then echo armv4t
4419         elif check_arm_arch 5;        then echo armv5
4420         elif check_arm_arch 5E;       then echo armv5e
4421         elif check_arm_arch 5T;       then echo armv5t
4422         elif check_arm_arch 5TE;      then echo armv5te
4423         elif check_arm_arch 5TEJ;     then echo armv5te
4424         elif check_arm_arch 6;        then echo armv6
4425         elif check_arm_arch 6J;       then echo armv6j
4426         elif check_arm_arch 6K;       then echo armv6k
4427         elif check_arm_arch 6Z;       then echo armv6z
4428         elif check_arm_arch 6ZK;      then echo armv6zk
4429         elif check_arm_arch 6T2;      then echo armv6t2
4430         elif check_arm_arch 7;        then echo armv7
4431         elif check_arm_arch 7A  7_A;  then echo armv7-a
4432         elif check_arm_arch 7S;       then echo armv7-a
4433         elif check_arm_arch 7R  7_R;  then echo armv7-r
4434         elif check_arm_arch 7M  7_M;  then echo armv7-m
4435         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4436         elif check_arm_arch 8A  8_A;  then echo armv8-a
4437         fi
4438     }
4439
4440     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4441
4442     case $cpu in
4443         armv*)
4444             cpuflags="-march=$cpu"
4445             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4446         ;;
4447         *)
4448             cpuflags="-mcpu=$cpu"
4449             case $cpu in
4450                 cortex-a*)                               subarch=armv7a  ;;
4451                 cortex-r*)                               subarch=armv7r  ;;
4452                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4453                 arm11*)                                  subarch=armv6   ;;
4454                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4455                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4456                 *)                             subarch=$(probe_arm_arch) ;;
4457             esac
4458         ;;
4459     esac
4460
4461     case "$subarch" in
4462         armv5t*)    enable fast_clz                ;;
4463         armv[6-8]*)
4464             enable fast_clz
4465             disabled fast_unaligned || enable fast_unaligned
4466             ;;
4467     esac
4468
4469 elif enabled avr32; then
4470
4471     case $cpu in
4472         ap7[02]0[0-2])
4473             subarch="avr32_ap"
4474             cpuflags="-mpart=$cpu"
4475         ;;
4476         ap)
4477             subarch="avr32_ap"
4478             cpuflags="-march=$cpu"
4479         ;;
4480         uc3[ab]*)
4481             subarch="avr32_uc"
4482             cpuflags="-mcpu=$cpu"
4483         ;;
4484         uc)
4485             subarch="avr32_uc"
4486             cpuflags="-march=$cpu"
4487         ;;
4488     esac
4489
4490 elif enabled bfin; then
4491
4492     cpuflags="-mcpu=$cpu"
4493
4494 elif enabled mips; then
4495
4496     cpuflags="-march=$cpu"
4497
4498     if [ "$cpu" != "generic" ]; then
4499         disable mips32r2
4500         disable mips32r5
4501         disable mips64r2
4502         disable mips32r6
4503         disable mips64r6
4504         disable loongson2
4505         disable loongson3
4506
4507         case $cpu in
4508             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4509                 enable mips32r2
4510                 disable msa
4511             ;;
4512             p5600|i6400|p6600)
4513                 disable mipsdsp
4514                 disable mipsdspr2
4515             ;;
4516             loongson*)
4517                 enable loongson2
4518                 enable loongson3
4519                 enable local_aligned_8 local_aligned_16 local_aligned_32
4520                 enable simd_align_16
4521                 enable fast_64bit
4522                 enable fast_clz
4523                 enable fast_cmov
4524                 enable fast_unaligned
4525                 disable aligned_stack
4526                 disable mipsfpu
4527                 disable mipsdsp
4528                 disable mipsdspr2
4529                 case $cpu in
4530                     loongson3*)
4531                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4532                     ;;
4533                     loongson2e)
4534                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4535                     ;;
4536                     loongson2f)
4537                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4538                     ;;
4539                 esac
4540             ;;
4541             *)
4542                 # Unknown CPU. Disable everything.
4543                 warn "unknown CPU. Disabling all MIPS optimizations."
4544                 disable mipsfpu
4545                 disable mipsdsp
4546                 disable mipsdspr2
4547                 disable msa
4548                 disable mmi
4549             ;;
4550         esac
4551
4552         case $cpu in
4553             24kc)
4554                 disable mipsfpu
4555                 disable mipsdsp
4556                 disable mipsdspr2
4557             ;;
4558             24kf*)
4559                 disable mipsdsp
4560                 disable mipsdspr2
4561             ;;
4562             24kec|34kc|1004kc)
4563                 disable mipsfpu
4564                 disable mipsdspr2
4565             ;;
4566             24kef*|34kf*|1004kf*)
4567                 disable mipsdspr2
4568             ;;
4569             74kc)
4570                 disable mipsfpu
4571             ;;
4572             p5600)
4573                 enable mips32r5
4574                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4575             ;;
4576             i6400)
4577                 enable mips64r6
4578                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4579             ;;
4580             p6600)
4581                 enable mips64r6
4582                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4583             ;;
4584         esac
4585     else
4586         # We do not disable anything. Is up to the user to disable the unwanted features.
4587         warn 'generic cpu selected'
4588     fi
4589
4590 elif enabled ppc; then
4591
4592     disable ldbrx
4593
4594     case $(tolower $cpu) in
4595         601|ppc601|powerpc601)
4596             cpuflags="-mcpu=601"
4597             disable altivec
4598         ;;
4599         603*|ppc603*|powerpc603*)
4600             cpuflags="-mcpu=603"
4601             disable altivec
4602         ;;
4603         604*|ppc604*|powerpc604*)
4604             cpuflags="-mcpu=604"
4605             disable altivec
4606         ;;
4607         g3|75*|ppc75*|powerpc75*)
4608             cpuflags="-mcpu=750"
4609             disable altivec
4610         ;;
4611         g4|745*|ppc745*|powerpc745*)
4612             cpuflags="-mcpu=7450"
4613             disable vsx
4614         ;;
4615         74*|ppc74*|powerpc74*)
4616             cpuflags="-mcpu=7400"
4617             disable vsx
4618         ;;
4619         g5|970|ppc970|powerpc970)
4620             cpuflags="-mcpu=970"
4621             disable vsx
4622         ;;
4623         power[3-6]*)
4624             cpuflags="-mcpu=$cpu"
4625             disable vsx
4626         ;;
4627         power[7-8]*)
4628             cpuflags="-mcpu=$cpu"
4629         ;;
4630         cell)
4631             cpuflags="-mcpu=cell"
4632             enable ldbrx
4633             disable vsx
4634         ;;
4635         e500mc)
4636             cpuflags="-mcpu=e500mc"
4637             disable altivec
4638         ;;
4639         e500v2)
4640             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4641             disable altivec
4642             disable dcbzl
4643         ;;
4644         e500)
4645             cpuflags="-mcpu=8540 -mhard-float"
4646             disable altivec
4647             disable dcbzl
4648         ;;
4649     esac
4650
4651 elif enabled sparc; then
4652
4653     case $cpu in
4654         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4655             cpuflags="-mcpu=$cpu"
4656         ;;
4657         ultrasparc*|niagara[234])
4658             cpuflags="-mcpu=$cpu"
4659         ;;
4660     esac
4661
4662 elif enabled x86; then
4663
4664     case $cpu in
4665         i[345]86|pentium)
4666             cpuflags="-march=$cpu"
4667             disable i686
4668             disable mmx
4669         ;;
4670         # targets that do NOT support nopl and conditional mov (cmov)
4671         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4672             cpuflags="-march=$cpu"
4673             disable i686
4674         ;;
4675         # targets that do support nopl and conditional mov (cmov)
4676         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4677         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4678         |amdfam10|barcelona|b[dt]ver*|znver*)
4679             cpuflags="-march=$cpu"
4680             enable i686
4681             enable fast_cmov
4682         ;;
4683         # targets that do support conditional mov but on which it's slow
4684         pentium4|pentium4m|prescott|nocona)
4685             cpuflags="-march=$cpu"
4686             enable i686
4687             disable fast_cmov
4688         ;;
4689     esac
4690
4691 fi
4692
4693 if [ "$cpu" != generic ]; then
4694     add_cflags  $cpuflags
4695     add_asflags $cpuflags
4696     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4697 fi
4698
4699 # compiler sanity check
4700 check_exec <<EOF
4701 int main(void){ return 0; }
4702 EOF
4703 if test "$?" != 0; then
4704     echo "$cc is unable to create an executable file."
4705     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4706         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4707         echo "Only do this if you know what cross compiling means."
4708     fi
4709     die "C compiler test failed."
4710 fi
4711
4712 add_cppflags -D_ISOC99_SOURCE
4713 add_cxxflags -D__STDC_CONSTANT_MACROS
4714 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4715
4716 # some compilers silently accept -std=c11, so we also need to check that the
4717 # version macro is defined properly
4718 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4719     add_cflags -std=c11
4720 else
4721     check_cflags -std=c99
4722 fi
4723
4724 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4725 #include <stdlib.h>
4726 EOF
4727 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4728 #include <stdlib.h>
4729 EOF
4730
4731 add_host_cppflags -D_ISOC99_SOURCE
4732 check_host_cflags -std=c99
4733 check_host_cflags -Wall
4734 check_host_cflags $host_cflags_speed
4735
4736 check_64bit(){
4737     arch32=$1
4738     arch64=$2
4739     expr=$3
4740     check_code cc "" "int test[2*($expr) - 1]" &&
4741         subarch=$arch64 || subarch=$arch32
4742 }
4743
4744 case "$arch" in
4745     aarch64|alpha|ia64)
4746         spic=$shared
4747     ;;
4748     mips)
4749         check_64bit mips mips64 '_MIPS_SIM > 1'
4750         spic=$shared
4751     ;;
4752     parisc)
4753         check_64bit parisc parisc64 'sizeof(void *) > 4'
4754         spic=$shared
4755     ;;
4756     ppc)
4757         check_64bit ppc ppc64 'sizeof(void *) > 4'
4758         spic=$shared
4759     ;;
4760     s390)
4761         check_64bit s390 s390x 'sizeof(void *) > 4'
4762         spic=$shared
4763     ;;
4764     sparc)
4765         check_64bit sparc sparc64 'sizeof(void *) > 4'
4766         spic=$shared
4767     ;;
4768     x86)
4769         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4770         # Treat x32 as x64 for now. Note it also needs spic=$shared
4771         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4772             subarch=x86_64
4773         if test "$subarch" = "x86_64"; then
4774             spic=$shared
4775         fi
4776     ;;
4777     ppc)
4778         check_cc <<EOF && subarch="ppc64"
4779         int test[(int)sizeof(char*) - 7];
4780 EOF
4781     ;;
4782 esac
4783
4784 enable $subarch
4785 enabled spic && enable_weak pic
4786
4787 # OS specific
4788 case $target_os in
4789     aix)
4790         SHFLAGS=-shared
4791         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4792         enabled shared && add_ldflags -Wl,-brtl
4793         ;;
4794     android)
4795         disable symver
4796         enable section_data_rel_ro
4797         SLIB_INSTALL_NAME='$(SLIBNAME)'
4798         SLIB_INSTALL_LINKS=
4799         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4800         ;;
4801     haiku)
4802         prefix_default="/boot/common"
4803         network_extralibs="-lnetwork"
4804         host_extralibs=
4805         ;;
4806     sunos)
4807         SHFLAGS='-shared -Wl,-h,$$(@F)'
4808         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4809         network_extralibs="-lsocket -lnsl"
4810         add_cppflags -D__EXTENSIONS__
4811         # When using suncc to build, the Solaris linker will mark
4812         # an executable with each instruction set encountered by
4813         # the Solaris assembler.  As our libraries contain their own
4814         # guards for processor-specific code, instead suppress
4815         # generation of the HWCAPS ELF section on Solaris x86 only.
4816         enabled_all suncc x86 &&
4817             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4818             add_ldflags -Wl,-M,mapfile
4819         nm_default='nm -P -g'
4820         version_script='-M'
4821         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4822         ;;
4823     netbsd)
4824         disable symver
4825         oss_indev_extralibs="-lossaudio"
4826         oss_outdev_extralibs="-lossaudio"
4827         enabled gcc || check_ldflags -Wl,-zmuldefs
4828         ;;
4829     openbsd|bitrig)
4830         disable symver
4831         SHFLAGS='-shared'
4832         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4833         SLIB_INSTALL_LINKS=
4834         oss_indev_extralibs="-lossaudio"
4835         oss_outdev_extralibs="-lossaudio"
4836         ;;
4837     dragonfly)
4838         disable symver
4839         ;;
4840     freebsd)
4841         ;;
4842     bsd/os)
4843         add_extralibs -lpoll -lgnugetopt
4844         strip="strip -d"
4845         ;;
4846     darwin)
4847         enabled ppc && add_asflags -force_cpusubtype_ALL
4848         install_name_dir_default='$(SHLIBDIR)'
4849         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4850         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4851         strip="${strip} -x"
4852         add_ldflags -Wl,-dynamic,-search_paths_first
4853         SLIBSUF=".dylib"
4854         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4855         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4856         objformat="macho"
4857         enabled x86_64 && objformat="macho64"
4858         enabled_any pic shared x86_64 ||
4859             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4860         check_header dispatch/dispatch.h &&
4861             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4862         version_script='-exported_symbols_list'
4863         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4864         ;;
4865     msys*)
4866         die "Native MSYS builds are discouraged, please use the MINGW environment."
4867         ;;
4868     mingw32*|mingw64*)
4869         if test $target_os = "mingw32ce"; then
4870             disable network
4871         else
4872             target_os=mingw32
4873         fi
4874         LIBTARGET=i386
4875         if enabled x86_64; then
4876             LIBTARGET="i386:x86-64"
4877         elif enabled arm; then
4878             LIBTARGET=arm-wince
4879         fi
4880         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4881         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4882         shlibdir_default="$bindir_default"
4883         SLIBPREF=""
4884         SLIBSUF=".dll"
4885         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4886         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4887         dlltool="${cross_prefix}dlltool"
4888         if check_cmd lib.exe -list; then
4889             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4890             if enabled x86_64; then
4891                 LIBTARGET=x64
4892             fi
4893         elif check_cmd $dlltool --version; then
4894             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4895         fi
4896         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4897         SLIB_INSTALL_LINKS=
4898         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4899         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4900         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4901         objformat="win32"
4902         ranlib=:
4903         enable dos_paths
4904         check_ldflags -Wl,--nxcompat,--dynamicbase
4905         # Lets work around some stupidity in binutils.
4906         # ld will strip relocations from executables even though we need them
4907         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4908         # however ld then forgets what the entry point should be (oops) so we
4909         # have to manually (re)set it.
4910         if enabled x86_32; then
4911             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4912         elif enabled x86_64; then
4913             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4914             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4915             # Set image base >4GB for extra entropy with HEASLR
4916             add_ldexeflags -Wl,--image-base,0x140000000
4917             append SHFLAGS -Wl,--image-base,0x180000000
4918         fi
4919         ;;
4920     win32|win64)
4921         disable symver
4922         if enabled shared; then
4923             # Link to the import library instead of the normal static library
4924             # for shared libs.
4925             LD_LIB='%.lib'
4926             # Cannot build both shared and static libs with MSVC or icl.
4927             disable static
4928         fi
4929         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4930         shlibdir_default="$bindir_default"
4931         SLIBPREF=""
4932         SLIBSUF=".dll"
4933         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4934         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4935         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4936         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4937         SLIB_INSTALL_LINKS=
4938         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4939         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4940         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4941         objformat="win32"
4942         ranlib=:
4943         enable dos_paths
4944         ;;
4945     cygwin*)
4946         target_os=cygwin
4947         shlibdir_default="$bindir_default"
4948         SLIBPREF="cyg"
4949         SLIBSUF=".dll"
4950         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4951         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4952         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4953         SLIB_INSTALL_LINKS=
4954         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4955         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4956         objformat="win32"
4957         enable dos_paths
4958         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4959         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4960         ;;
4961     *-dos|freedos|opendos)
4962         network_extralibs="-lsocket"
4963         objformat="coff"
4964         enable dos_paths
4965         add_cppflags -U__STRICT_ANSI__
4966         ;;
4967     linux)
4968         enable dv1394
4969         enable section_data_rel_ro
4970         ;;
4971     irix*)
4972         target_os=irix
4973         ranlib="echo ignoring ranlib"
4974         ;;
4975     os/2*)
4976         strip="lxlite -CS"
4977         objformat="aout"
4978         add_cppflags -D_GNU_SOURCE
4979         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
4980         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4981         LIBSUF="_s.a"
4982         SLIBPREF=""
4983         SLIBSUF=".dll"
4984         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4985         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4986         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4987             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4988             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4989             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4990             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4991         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4992             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4993         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4994         SLIB_INSTALL_LINKS=
4995         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4996         enable dos_paths
4997         enable_weak os2threads
4998         ;;
4999     gnu/kfreebsd)
5000         add_cppflags -D_BSD_SOURCE
5001         ;;
5002     gnu)
5003         ;;
5004     qnx)
5005         add_cppflags -D_QNX_SOURCE
5006         network_extralibs="-lsocket"
5007         ;;
5008     symbian)
5009         SLIBSUF=".dll"
5010         enable dos_paths
5011         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5012         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5013         add_ldflags -Wl,--target1-abs,--no-undefined \
5014                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5015                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5016         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5017                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5018                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5019         ;;
5020     osf1)
5021         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
5022         ;;
5023     minix)
5024         ;;
5025     none)
5026         ;;
5027     *)
5028         die "Unknown OS '$target_os'."
5029         ;;
5030 esac
5031
5032 # test if creating links works
5033 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5034 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5035 mkdir "$link_dest"
5036 $ln_s "$link_dest" "$link_name"
5037 touch "$link_dest/test_file"
5038 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5039     # create link to source path
5040     [ -e src ] && rm src
5041     $ln_s "$source_path" src
5042     source_link=src
5043 else
5044     # creating directory links doesn't work
5045     # fall back to using the full source path
5046     source_link="$source_path"
5047 fi
5048 # cleanup
5049 rm -r "$link_dest"
5050 rm -r "$link_name"
5051
5052 # determine libc flavour
5053
5054 probe_libc(){
5055     pfx=$1
5056     pfx_no_=${pfx%_}
5057     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5058     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5059         eval ${pfx}libc_type=uclibc
5060         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5061     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5062         eval ${pfx}libc_type=glibc
5063         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5064     # MinGW headers can be installed on Cygwin, so check for newlib first.
5065     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5066         eval ${pfx}libc_type=newlib
5067         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5068     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5069     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5070         eval ${pfx}libc_type=mingw64
5071         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5072             add_compat msvcrt/snprintf.o
5073             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5074         fi
5075         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5076         eval test \$${pfx_no_}cc_type = "gcc" &&
5077             add_${pfx}cppflags -D__printf__=__gnu_printf__
5078     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5079          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5080         eval ${pfx}libc_type=mingw32
5081         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5082             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5083             die "ERROR: MinGW32 runtime version must be >= 3.15."
5084         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5085         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5086             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5087         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5088             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5089         eval test \$${pfx_no_}cc_type = "gcc" &&
5090             add_${pfx}cppflags -D__printf__=__gnu_printf__
5091     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5092         eval ${pfx}libc_type=msvcrt
5093         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5094             if [ "$pfx" = host_ ]; then
5095                 add_host_cppflags -Dsnprintf=_snprintf
5096             else
5097                 add_compat strtod.o strtod=avpriv_strtod
5098                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5099                                              _snprintf=avpriv_snprintf  \
5100                                              vsnprintf=avpriv_vsnprintf
5101             fi
5102         fi
5103         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5104         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5105         # 0x601 by default unless something else is set by the user.
5106         # This can easily lead to us detecting functions only present
5107         # in such new versions and producing binaries requiring windows 7.0.
5108         # Therefore explicitly set the default to XP unless the user has
5109         # set something else on the command line.
5110         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5111         # family. For these cases, configure is free to use any functions
5112         # found in the SDK headers by default. (Alternatively, we could force
5113         # _WIN32_WINNT to 0x0602 in that case.)
5114         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5115             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5116 #ifdef WINAPI_FAMILY
5117 #include <winapifamily.h>
5118 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5119 #error not desktop
5120 #endif
5121 #endif
5122 EOF
5123         if [ "$pfx" = "" ]; then
5124             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5125             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5126         fi
5127     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5128         eval ${pfx}libc_type=klibc
5129     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5130         eval ${pfx}libc_type=bionic
5131     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5132         eval ${pfx}libc_type=solaris
5133         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5134     fi
5135     check_${pfx}cc <<EOF
5136 #include <time.h>
5137 void *v = localtime_r;
5138 EOF
5139 test "$?" != 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
5140 #include <time.h>
5141 void *v = localtime_r;
5142 EOF
5143
5144 }
5145
5146 probe_libc
5147 test -n "$libc_type" && enable libc_$libc_type
5148 probe_libc host_
5149 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5150
5151 case $libc_type in
5152     bionic)
5153         add_compat strtod.o strtod=avpriv_strtod
5154         ;;
5155 esac
5156
5157 # hacks for compiler/libc/os combinations
5158
5159 if enabled_all tms470 libc_glibc; then
5160     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5161     add_cppflags -D__USER_LABEL_PREFIX__=
5162     add_cppflags -D__builtin_memset=memset
5163     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5164     add_cflags   -pds=48    # incompatible redefinition of macro
5165 fi
5166
5167 if enabled_all ccc libc_glibc; then
5168     add_ldflags -Wl,-z,now  # calls to libots crash without this
5169 fi
5170
5171 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5172     add_cppflags '-I\$(SRC_PATH)/compat/float'
5173
5174 esc(){
5175     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5176 }
5177
5178 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
5179
5180 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5181
5182 set_default libdir
5183 : ${shlibdir_default:="$libdir"}
5184 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5185
5186 set_default $PATHS_LIST
5187 set_default nm
5188
5189 # we need to build at least one lib type
5190 if ! enabled_any static shared; then
5191     cat <<EOF
5192 At least one library type must be built.
5193 Specify --enable-static to build the static libraries or --enable-shared to
5194 build the shared libraries as well. To only build the shared libraries specify
5195 --disable-static in addition to --enable-shared.
5196 EOF
5197     exit 1
5198 fi
5199
5200 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5201
5202 enable_weak_pic() {
5203     disabled pic && return
5204     enable pic
5205     add_cppflags -DPIC
5206     case "$target_os" in
5207     mingw*|cygwin*)
5208         ;;
5209     *)
5210         add_cflags -fPIC
5211         ;;
5212     esac
5213     add_asflags  -fPIC
5214 }
5215
5216 enabled pic && enable_weak_pic
5217
5218 check_cc <<EOF || die "Symbol mangling check failed."
5219 int ff_extern;
5220 EOF
5221 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5222 extern_prefix=${sym%%ff_extern*}
5223
5224 check_cc <<EOF && enable_weak inline_asm
5225 void foo(void) { __asm__ volatile ("" ::); }
5226 EOF
5227
5228 _restrict=
5229 for restrict_keyword in restrict __restrict__ __restrict; do
5230     check_cc <<EOF && _restrict=$restrict_keyword && break
5231 void foo(char * $restrict_keyword p);
5232 EOF
5233 done
5234
5235 check_cc <<EOF && enable pragma_deprecated
5236 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5237 EOF
5238
5239 check_cc <<EOF && enable attribute_packed
5240 struct { int x; } __attribute__((packed)) x;
5241 EOF
5242
5243 check_cc <<EOF && enable attribute_may_alias
5244 union { int x; } __attribute__((may_alias)) x;
5245 EOF
5246
5247 check_cc <<EOF || die "endian test failed"
5248 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5249 EOF
5250 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5251
5252 if ! enabled ppc64 || enabled bigendian; then
5253     disable vsx
5254 fi
5255
5256 check_gas() {
5257     log "check_gas using '$as' as AS"
5258     # :vararg is used on aarch64, arm and ppc altivec
5259     check_as <<EOF || return 1
5260 .macro m n, y:vararg=0
5261 \n: .int \y
5262 .endm
5263 m x
5264 EOF
5265     # .altmacro is only used in arm asm
5266     ! enabled arm || check_as <<EOF || return 1
5267 .altmacro
5268 EOF
5269     enable gnu_as
5270     return 0
5271 }
5272
5273 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5274     nogas=:
5275     enabled_any arm aarch64 && nogas=die
5276     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5277     as_noop=-v
5278
5279     case $as_type in
5280         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5281         gcc)  gaspp_as_type=gas ;;
5282         *)    gaspp_as_type=$as_type ;;
5283     esac
5284
5285     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5286
5287     test "${as#*gas-preprocessor.pl}" != "$as" ||
5288     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5289         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5290
5291     if ! check_gas ; then
5292         as=${gas:=$as}
5293         check_gas || \
5294             $nogas "GNU assembler not found, install/update gas-preprocessor"
5295     fi
5296
5297     check_as <<EOF && enable as_func
5298 .func test
5299 .endfunc
5300 EOF
5301 fi
5302
5303 check_inline_asm inline_asm_labels '"1:\n"'
5304
5305 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5306
5307 if enabled aarch64; then
5308     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5309     # internal assembler in clang 3.3 does not support this instruction
5310     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5311     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5312
5313     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5314
5315 elif enabled alpha; then
5316
5317     check_cflags -mieee
5318
5319 elif enabled arm; then
5320
5321     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5322
5323     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5324 float func(float a, float b){ return a+b; }
5325 EOF
5326
5327     enabled thumb && check_cflags -mthumb || check_cflags -marm
5328
5329     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5330         enable vfp_args
5331     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5332         enable vfp_args
5333     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5334         case "${cross_prefix:-$cc}" in
5335             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5336             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5337 __asm__ (".eabi_attribute 28, 1");
5338 int main(void) { return 0; }
5339 EOF
5340         esac
5341         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5342     fi
5343
5344     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5345     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5346     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5347     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5348     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5349     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5350     enabled setend  && check_insn setend  'setend be'
5351
5352     [ $target_os = linux ] || [ $target_os = android ] ||
5353         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5354             $ARCH_EXT_LIST_ARM
5355
5356     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5357
5358     check_as <<EOF && enable as_dn_directive
5359 ra .dn d0.i16
5360 .unreq ra
5361 EOF
5362     check_as <<EOF && enable as_fpu_directive
5363 .fpu neon
5364 EOF
5365
5366     # llvm's integrated assembler supports .object_arch from llvm 3.5
5367     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5368 .object_arch armv4
5369 EOF
5370
5371     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5372
5373 elif enabled mips; then
5374
5375     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5376     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5377     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5378
5379     # Enable minimum ISA based on selected options
5380     if enabled mips64; then
5381         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5382         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5383         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5384     else
5385         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5386         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5387         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5388         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5389     fi
5390
5391     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5392     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5393     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5394     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5395     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5396
5397     if enabled bigendian && enabled msa; then
5398         disable msa
5399     fi
5400
5401 elif enabled parisc; then
5402
5403     if enabled gcc; then
5404         case $($cc -dumpversion) in
5405             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5406         esac
5407     fi
5408
5409 elif enabled ppc; then
5410
5411     enable local_aligned_8 local_aligned_16 local_aligned_32
5412
5413     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5414     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5415     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5416     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5417
5418     # AltiVec flags: The FSF version of GCC differs from the Apple version
5419     if enabled altivec; then
5420         check_cflags -maltivec -mabi=altivec &&
5421         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5422         check_cflags -faltivec
5423
5424         # check if our compiler supports Motorola AltiVec C API
5425         check_cc <<EOF || disable altivec
5426 $inc_altivec_h
5427 int main(void) {
5428     vector signed int v1 = (vector signed int) { 0 };
5429     vector signed int v2 = (vector signed int) { 1 };
5430     v1 = vec_add(v1, v2);
5431     return 0;
5432 }
5433 EOF
5434
5435         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5436     fi
5437
5438     if enabled vsx; then
5439         check_cflags -mvsx &&
5440         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5441     fi
5442
5443     if enabled power8; then
5444         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5445     fi
5446
5447 elif enabled x86; then
5448
5449     check_builtin rdtsc    intrin.h   "__rdtsc()"
5450     check_builtin mm_empty mmintrin.h "_mm_empty()"
5451
5452     enable local_aligned_8 local_aligned_16 local_aligned_32
5453
5454     # check whether EBP is available on x86
5455     # As 'i' is stored on the stack, this program will crash
5456     # if the base pointer is used to access it because the
5457     # base pointer is cleared in the inline assembly code.
5458     check_exec_crash <<EOF && enable ebp_available
5459 volatile int i=0;
5460 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5461 return i;
5462 EOF
5463
5464     # check whether EBX is available on x86
5465     check_inline_asm ebx_available '""::"b"(0)' &&
5466         check_inline_asm ebx_available '"":::"%ebx"'
5467
5468     # check whether xmm clobbers are supported
5469     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5470
5471     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5472         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5473
5474     # check whether binutils is new enough to compile SSSE3/MMXEXT
5475     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5476     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5477
5478     if ! disabled_any asm mmx yasm; then
5479         if check_cmd $yasmexe --version; then
5480             enabled x86_64 && yasm_extra="-m amd64"
5481             yasm_debug="-g dwarf2"
5482         elif check_cmd nasm -v; then
5483             yasmexe=nasm
5484             yasm_debug="-g -F dwarf"
5485             if enabled x86_64; then
5486                 case "$objformat" in
5487                     elf)   objformat=elf64 ;;
5488                     win32) objformat=win64 ;;
5489                 esac
5490             fi
5491         fi
5492
5493         YASMFLAGS="-f $objformat $yasm_extra"
5494         enabled pic               && append YASMFLAGS "-DPIC"
5495         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5496         case "$objformat" in
5497             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5498         esac
5499
5500         check_yasm "movbe ecx, [5]" && enable yasm ||
5501             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5502         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5503         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5504         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5505         check_yasm "CPU amdnop" || disable cpunop
5506     fi
5507
5508     case "$cpu" in
5509         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5510             disable fast_clz
5511         ;;
5512     esac
5513
5514 fi
5515
5516 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5517
5518 check_ldflags -Wl,--as-needed
5519 check_ldflags -Wl,-z,noexecstack
5520
5521 if check_func dlopen && check_func dlsym; then
5522     ldl=
5523 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5524     ldl=-ldl
5525 fi
5526
5527 avisynth_demuxer_extralibs='$ldl'
5528 cuda_extralibs='$ldl'
5529 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5530 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5531 frei0r_filter_extralibs='$ldl'
5532 frei0r_src_filter_extralibs='$ldl'
5533 ladspa_filter_extralibs='$ldl'
5534 nvenc_extralibs='$ldl'
5535 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5536 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5537
5538 if ! disabled network; then
5539     check_func getaddrinfo $network_extralibs
5540     check_func inet_aton $network_extralibs
5541
5542     check_type netdb.h "struct addrinfo"
5543     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5544     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5545     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5546     check_type poll.h "struct pollfd"
5547     check_type netinet/sctp.h "struct sctp_event_subscribe"
5548     check_struct "sys/socket.h" "struct msghdr" msg_flags
5549     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5550     check_type netinet/in.h "struct sockaddr_in6"
5551     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5552     check_type "sys/types.h sys/socket.h" socklen_t
5553
5554     # Prefer arpa/inet.h over winsock2
5555     if check_header arpa/inet.h ; then
5556         check_func closesocket
5557     elif check_header winsock2.h ; then
5558         check_func_headers winsock2.h closesocket -lws2 &&
5559             network_extralibs="-lws2" ||
5560         { check_func_headers winsock2.h closesocket -lws2_32 &&
5561             network_extralibs="-lws2_32"; } || disable winsock2_h network
5562         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5563
5564         check_type ws2tcpip.h socklen_t
5565         check_type ws2tcpip.h "struct addrinfo"
5566         check_type ws2tcpip.h "struct group_source_req"
5567         check_type ws2tcpip.h "struct ip_mreq_source"
5568         check_type ws2tcpip.h "struct ipv6_mreq"
5569         check_type winsock2.h "struct pollfd"
5570         check_struct winsock2.h "struct sockaddr" sa_len
5571         check_type ws2tcpip.h "struct sockaddr_in6"
5572         check_type ws2tcpip.h "struct sockaddr_storage"
5573     else
5574         disable network
5575     fi
5576 fi
5577
5578 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5579 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5580 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5581 check_builtin sarestart signal.h "SA_RESTART"
5582 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5583 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5584 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5585 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5586 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5587
5588 case "$custom_allocator" in
5589     jemalloc)
5590         # jemalloc by default does not use a prefix
5591         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5592     ;;
5593     tcmalloc)
5594         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5595         malloc_prefix=tc_
5596     ;;
5597 esac
5598
5599 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5600 check_func  ${malloc_prefix}memalign            && enable memalign
5601 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5602
5603 check_func  access
5604 check_func_headers stdlib.h arc4random
5605 check_func_headers time.h clock_gettime ||
5606     { check_lib clock_gettime time.h clock_gettime -lrt && LIBRT="-lrt"; }
5607 check_func  fcntl
5608 check_func  fork
5609 check_func  gethrtime
5610 check_func  getopt
5611 check_func  getrusage
5612 check_func  gettimeofday
5613 check_func  isatty
5614 check_func  mach_absolute_time
5615 check_func  mkstemp
5616 check_func  mmap
5617 check_func  mprotect
5618 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5619 check_func_headers time.h nanosleep ||
5620     { check_lib nanosleep time.h nanosleep -lrt && LIBRT="-lrt"; }
5621 check_func  sched_getaffinity
5622 check_func  setrlimit
5623 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5624 check_func  strerror_r
5625 check_func  sysconf
5626 check_func  sysctl
5627 check_func  usleep
5628
5629 check_func_headers conio.h kbhit
5630 check_func_headers io.h setmode
5631 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5632 check_func_headers stdlib.h getenv
5633 check_func_headers sys/stat.h lstat
5634
5635 check_func_headers windows.h GetProcessAffinityMask
5636 check_func_headers windows.h GetProcessTimes
5637 check_func_headers windows.h GetSystemTimeAsFileTime
5638 check_func_headers windows.h LoadLibrary
5639 check_func_headers windows.h MapViewOfFile
5640 check_func_headers windows.h PeekNamedPipe
5641 check_func_headers windows.h SetConsoleTextAttribute
5642 check_func_headers windows.h SetConsoleCtrlHandler
5643 check_func_headers windows.h Sleep
5644 check_func_headers windows.h VirtualAlloc
5645 check_struct windows.h "CONDITION_VARIABLE" Ptr
5646 check_func_headers glob.h glob
5647 enabled xlib &&
5648     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5649
5650 check_header AudioToolbox/AudioToolbox.h
5651 check_header d3d11.h
5652 check_header direct.h
5653 check_header dirent.h
5654 check_header dlfcn.h
5655 check_header dxva.h
5656 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5657 check_header io.h
5658 check_header libcrystalhd/libcrystalhd_if.h
5659 check_header mach/mach_time.h
5660 check_header malloc.h
5661 check_header net/udplite.h
5662 check_header poll.h
5663 check_header sys/mman.h
5664 check_header sys/param.h
5665 check_header sys/resource.h
5666 check_header sys/select.h
5667 check_header sys/time.h
5668 check_header sys/un.h
5669 check_header termios.h
5670 check_header unistd.h
5671 check_header valgrind/valgrind.h
5672 check_header VideoDecodeAcceleration/VDADecoder.h
5673 check_header VideoToolbox/VideoToolbox.h
5674 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5675 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5676 check_header windows.h
5677 check_header X11/extensions/XvMClib.h
5678 check_header asm/types.h
5679
5680 # it seems there are versions of clang in some distros that try to use the
5681 # gcc headers, which explodes for stdatomic
5682 # so we also check that atomics actually work here
5683 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5684
5685 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5686 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5687 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5688
5689 check_lib coreservices "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5690
5691 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5692
5693 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5694 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5695 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5696 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5697 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5698
5699 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5700 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5701 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5702 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5703 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5704 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5705 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5706 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5707
5708 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5709
5710 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5711
5712 if ! disabled w32threads && ! enabled pthreads; then
5713     check_func_headers "windows.h process.h" _beginthreadex &&
5714         enable w32threads || disable w32threads
5715     if ! enabled w32threads && enabled winrt; then
5716         check_func_headers "windows.h" CreateThread &&
5717             enable w32threads || disable w32threads
5718     fi
5719 fi
5720
5721 # check for some common methods of building with pthread support
5722 # do this before the optional library checks as some of them require pthreads
5723 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5724     if check_lib pthreads pthread.h pthread_join   -pthread &&
5725        check_lib pthreads pthread.h pthread_create -pthread; then
5726         add_cflags -pthread
5727     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5728          check_lib pthreads pthread.h pthread_create -pthreads; then
5729         add_cflags -pthreads
5730     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5731          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5732         add_cflags -ldl -pthread
5733     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5734          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5735         :
5736     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5737          check_lib pthreads pthread.h pthread_create -lpthread; then
5738         :
5739     elif check_func pthread_join && check_func pthread_create; then
5740         enable pthreads
5741     fi
5742     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5743 fi
5744
5745
5746 if enabled pthreads; then
5747   check_func pthread_cancel
5748 fi
5749
5750 enabled pthreads &&
5751     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5752
5753 disabled  zlib || check_lib zlib   zlib.h      zlibVersion    -lz
5754 disabled bzlib || check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5755 disabled  lzma || check_lib lzma   lzma.h lzma_version_number -llzma
5756
5757 check_lib libm math.h sin -lm && LIBM="-lm"
5758 disabled crystalhd || check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
5759
5760 atan2f_args=2
5761 copysign_args=2
5762 hypot_args=2
5763 ldexpf_args=2
5764 powf_args=2
5765
5766 for func in $MATH_FUNCS; do
5767     eval check_mathfunc $func \${${func}_args:-1} $LIBM
5768 done
5769
5770 for func in $COMPLEX_FUNCS; do
5771     eval check_complexfunc $func \${${func}_args:-1}
5772 done
5773
5774 # these are off by default, so fail if requested and not available
5775 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5776 enabled avfoundation_indev && { check_lib avfoundation_indev CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5777                                 check_lib avfoundation_indev ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5778 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5779 enabled cuvid             && { enabled cuda ||
5780                                die "ERROR: CUVID requires CUDA"; }
5781 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5782 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5783 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5784 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5785                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5786 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5787 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5788 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5789 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5790 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5791 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5792 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5793 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5794 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5795 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5796                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5797                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5798 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5799 enabled libdc1394         && require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new
5800 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5801                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5802                                  warn "using libfdk without pkg-config"; } }
5803 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"
5804 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5805 enabled fontconfig        && enable libfontconfig
5806 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5807 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5808 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5809 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5810 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5811                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5812                                done || die "ERROR: libgsm not found"; }
5813 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5814 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5815 # While it may appear that require is being used as a pkg-config
5816 # fallback for libmfx, it is actually being used to detect a different
5817 # installation route altogether.  If libmfx is installed via the Intel
5818 # Media SDK or Intel Media Server Studio, these don't come with
5819 # pkg-config support.  Instead, users should make sure that the build
5820 # can find the libraries and headers through other means.
5821 enabled libmfx            && { use_pkg_config libmfx "mfx/mfxvideo.h" MFXInit ||
5822                                { require libmfx "mfx/mfxvideo.h" MFXInit -llibmfx && warn "using libmfx without pkg-config"; } }
5823 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5824 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5825 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa
5826 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5827 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5828 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5829 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5830                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5831                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5832                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5833 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5834 enabled libopenjpeg       && { { check_lib libopenjpeg openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5835                                check_lib libopenjpeg openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5836                                { check_lib libopenjpeg openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5837                                { check_lib libopenjpeg openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5838                                { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5839                                die "ERROR: libopenjpeg not found"; }
5840 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5841 enabled libopus           && {
5842     enabled libopus_decoder && {
5843         require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5844     }
5845     enabled libopus_encoder && {
5846         require_pkg_config opus opus_multistream.h opus_multistream_surround_encoder_create
5847     }
5848 }
5849 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5850 enabled librsvg           && require_pkg_config librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
5851 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5852 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5853 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5854 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5855                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5856 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
5857 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5858 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5859 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5860 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5861 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5862 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5863                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5864                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5865 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5866 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5867 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5868 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5869
5870 enabled libvpx            && {
5871     enabled libvpx_vp8_decoder && {
5872         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5873             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5874                 die "ERROR: libvpx decoder version must be >=0.9.1";
5875     }
5876     enabled libvpx_vp8_encoder && {
5877         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5878             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5879                 die "ERROR: libvpx encoder version must be >=0.9.7";
5880     }
5881     enabled libvpx_vp9_decoder && {
5882         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5883             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx
5884     }
5885     enabled libvpx_vp9_encoder && {
5886         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5887             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx
5888     }
5889     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5890         die "libvpx enabled but no supported decoders found"
5891     fi
5892 }
5893
5894 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5895 enabled libwebp           && {
5896     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5897     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5898 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5899                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
5900                                  warn "using libx264 without pkg-config"; } } &&
5901                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5902                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5903                              { check_cpp_condition x264.h "X264_MPEG2" &&
5904                                enable libx262; }
5905 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5906                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5907                                die "ERROR: libx265 version must be >= 68."; }
5908 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
5909 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5910 enabled libzimg           && require_pkg_config "zimg >= 2.3.0" zimg.h zimg_get_api_version
5911 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5912 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5913                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5914                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5915 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5916 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5917                                { ! enabled cross_compile &&
5918                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
5919                                  add_ldflags -L/opt/vc/lib/ &&
5920                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
5921                                die "ERROR: mmal not found" &&
5922                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
5923 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5924                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
5925                                die "ERROR: openal not found"; } &&
5926                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5927                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5928 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5929                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5930                                die "ERROR: opencl not found"; } &&
5931                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5932                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5933                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5934 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
5935                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5936                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5937                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5938                                die "ERROR: opengl not found."
5939                              }
5940 enabled omx_rpi           && { check_header OMX_Core.h ||
5941                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
5942                                die "ERROR: OpenMAX IL headers not found"; }
5943 enabled omx               && { check_header OMX_Core.h || die "ERROR: OpenMAX IL headers not found"; }
5944 enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
5945                                use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5946                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5947                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5948                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5949                                die "ERROR: openssl not found"; }
5950 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5951
5952 if enabled gcrypt; then
5953     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5954     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5955         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5956         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
5957         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
5958             die "ERROR: gcrypt not found"
5959         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_extralibs
5960     else
5961         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5962     fi
5963 fi
5964
5965 disabled sdl && disable sdl2
5966 if ! disabled sdl2; then
5967     SDL2_CONFIG="${cross_prefix}sdl2-config"
5968     if check_pkg_config sdl2 SDL_events.h SDL_PollEvent; then
5969         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5970         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5971         check_func SDL_Init $sdl2_extralibs $sdl2_cflags && enable sdl2
5972     else
5973       if "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
5974         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
5975         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
5976         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5977         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5978         check_func SDL_Init $sdl2_extralibs $sdl2_cflags && enable sdl2
5979       fi
5980     fi
5981     if test $target_os = "mingw32"; then
5982         sdl2_extralibs="$sdl2_extralibs -mconsole"
5983     fi
5984 fi
5985 enabled sdl2 && enable sdl && add_cflags $sdl2_cflags && add_extralibs $sdl2_extralibs
5986
5987 if enabled decklink; then
5988     case $target_os in
5989         mingw32*|mingw64*|win32|win64)
5990             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
5991             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
5992             ;;
5993     esac
5994 fi
5995
5996 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5997     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security"; }
5998
5999 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6000                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
6001
6002 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6003 enabled makeinfo \
6004     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6005     && enable makeinfo_html || disable makeinfo_html
6006 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6007 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6008 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6009 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6010
6011 check_header linux/fb.h
6012 check_header linux/videodev.h
6013 check_header linux/videodev2.h
6014 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
6015
6016 check_header sys/videoio.h
6017 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
6018
6019 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6020 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6021 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6022 # w32api 3.12 had it defined wrong
6023 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6024
6025 check_type "dshow.h" IBaseFilter
6026
6027 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6028 { check_header dev/bktr/ioctl_meteor.h &&
6029   check_header dev/bktr/ioctl_bt848.h; } ||
6030 { check_header machine/ioctl_meteor.h &&
6031   check_header machine/ioctl_bt848.h; } ||
6032 { check_header dev/video/meteor/ioctl_meteor.h &&
6033   check_header dev/video/bktr/ioctl_bt848.h; } ||
6034 check_header dev/ic/bt8xx.h
6035
6036 if check_struct sys/soundcard.h audio_buf_info bytes; then
6037     enable_safe sys/soundcard.h
6038 else
6039     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
6040     #include <sys/soundcard.h>
6041     audio_buf_info abc;
6042 EOF
6043 fi
6044 check_header soundcard.h
6045
6046 enabled_any alsa_indev alsa_outdev &&
6047     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6048
6049 enabled jack_indev && check_lib jack jack/jack.h jack_client_open -ljack &&
6050     check_func jack_port_get_latency_range -ljack
6051
6052 enabled_any sndio_indev sndio_outdev && check_lib sndio sndio.h sio_open -lsndio
6053
6054 if enabled libcdio; then
6055     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6056     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6057     die "ERROR: No usable libcdio/cdparanoia found"
6058 fi
6059
6060 if ! disabled libxcb; then
6061     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
6062         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
6063     } && enable libxcb
6064
6065 if enabled libxcb; then
6066     disabled libxcb_shm || {
6067         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
6068             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
6069         } && check_header sys/shm.h && enable libxcb_shm; }
6070
6071     disabled libxcb_xfixes || {
6072         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
6073             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
6074         } && enable libxcb_xfixes; }
6075
6076     disabled libxcb_shape || {
6077         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
6078             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
6079         } && enable libxcb_shape; }
6080
6081     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
6082     add_extralibs $xcb_extralibs $xcb_shm_extralibs $xcb_xfixes_extralibs $xcb_shape_extralibs
6083 fi
6084 fi
6085
6086 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6087
6088 enabled dxva2api_h &&
6089     check_cc <<EOF && enable dxva2api_cobj
6090 #define _WIN32_WINNT 0x0600
6091 #define COBJMACROS
6092 #include <windows.h>
6093 #include <d3d9.h>
6094 #include <dxva2api.h>
6095 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
6096 EOF
6097
6098 enabled dxva2 &&
6099     check_lib dxva2_lib windows.h CoTaskMemFree -lole32
6100
6101 enabled vaapi &&
6102     check_lib vaapi va/va.h vaInitialize -lva
6103
6104 enabled vaapi &&
6105     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6106     disable vaapi
6107
6108 enabled vaapi &&
6109     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6110
6111 enabled vaapi &&
6112     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6113
6114 enabled vdpau &&
6115     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6116     disable vdpau
6117
6118 enabled vdpau &&
6119     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6120
6121 if enabled x86; then
6122     case $target_os in
6123         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6124             ;;
6125         *)
6126             disable cuda cuvid nvenc
6127             ;;
6128     esac
6129 else
6130     disable cuda cuvid nvenc
6131 fi
6132
6133 enabled nvenc &&
6134     check_cc -I$source_path <<EOF || disable nvenc
6135 #include "compat/nvenc/nvEncodeAPI.h"
6136 NV_ENCODE_API_FUNCTION_LIST flist;
6137 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6138 int main(void) { return 0; }
6139 EOF
6140
6141 # Funny iconv installations are not unusual, so check it after all flags have been set
6142 disabled iconv || check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6143
6144 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6145
6146 # add some useful compiler flags if supported
6147 check_cflags -Wdeclaration-after-statement
6148 check_cflags -Wall
6149 check_cflags -Wdisabled-optimization
6150 check_cflags -Wpointer-arith
6151 check_cflags -Wredundant-decls
6152 check_cflags -Wwrite-strings
6153 check_cflags -Wtype-limits
6154 check_cflags -Wundef
6155 check_cflags -Wmissing-prototypes
6156 check_cflags -Wno-pointer-to-int-cast
6157 check_cflags -Wstrict-prototypes
6158 check_cflags -Wempty-body
6159
6160 if enabled extra_warnings; then
6161     check_cflags -Wcast-qual
6162     check_cflags -Wextra
6163     check_cflags -Wpedantic
6164 fi
6165
6166 check_disable_warning(){
6167     warning_flag=-W${1#-Wno-}
6168     test_cflags $warning_flag && add_cflags $1
6169 }
6170
6171 check_disable_warning -Wno-parentheses
6172 check_disable_warning -Wno-switch
6173 check_disable_warning -Wno-format-zero-length
6174 check_disable_warning -Wno-pointer-sign
6175 check_disable_warning -Wno-unused-const-variable
6176
6177 check_disable_warning_headers(){
6178     warning_flag=-W${1#-Wno-}
6179     test_cflags $warning_flag && add_cflags_headers $1
6180 }
6181
6182 check_disable_warning_headers -Wno-deprecated-declarations
6183 check_disable_warning_headers -Wno-unused-variable
6184
6185 check_cc <<EOF && enable blocks_extension
6186 void (^block)(void);
6187 EOF
6188
6189 # add some linker flags
6190 check_ldflags -Wl,--warn-common
6191 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6192 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6193 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6194 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6195
6196 # add some strip flags
6197 # -wN '..@*' is more selective than -x, but not available everywhere.
6198 check_stripflags -wN \'..@*\' || check_stripflags -x
6199
6200 enabled neon_clobber_test &&
6201     check_ldflags -Wl,--wrap,avcodec_open2              \
6202                   -Wl,--wrap,avcodec_decode_audio4      \
6203                   -Wl,--wrap,avcodec_decode_video2      \
6204                   -Wl,--wrap,avcodec_decode_subtitle2   \
6205                   -Wl,--wrap,avcodec_encode_audio2      \
6206                   -Wl,--wrap,avcodec_encode_video2      \
6207                   -Wl,--wrap,avcodec_encode_subtitle    \
6208                   -Wl,--wrap,avcodec_send_packet        \
6209                   -Wl,--wrap,avcodec_receive_packet     \
6210                   -Wl,--wrap,avcodec_send_frame         \
6211                   -Wl,--wrap,avcodec_receive_frame      \
6212                   -Wl,--wrap,swr_convert                \
6213                   -Wl,--wrap,avresample_convert ||
6214     disable neon_clobber_test
6215
6216 enabled xmm_clobber_test &&
6217     check_ldflags -Wl,--wrap,avcodec_open2              \
6218                   -Wl,--wrap,avcodec_decode_audio4      \
6219                   -Wl,--wrap,avcodec_decode_video2      \
6220                   -Wl,--wrap,avcodec_decode_subtitle2   \
6221                   -Wl,--wrap,avcodec_encode_audio2      \
6222                   -Wl,--wrap,avcodec_encode_video2      \
6223                   -Wl,--wrap,avcodec_encode_subtitle    \
6224                   -Wl,--wrap,avcodec_send_packet        \
6225                   -Wl,--wrap,avcodec_receive_packet     \
6226                   -Wl,--wrap,avcodec_send_frame         \
6227                   -Wl,--wrap,avcodec_receive_frame      \
6228                   -Wl,--wrap,swr_convert                \
6229                   -Wl,--wrap,avresample_convert         \
6230                   -Wl,--wrap,sws_scale ||
6231     disable xmm_clobber_test
6232
6233 check_ld "cc" <<EOF && enable proper_dce
6234 extern const int array[512];
6235 static inline int func(void) { return array[0]; }
6236 int main(void) { return 0; }
6237 EOF
6238
6239 if enabled proper_dce; then
6240     echo "X { local: *; };" > $TMPV
6241     if test_ldflags -Wl,${version_script},$TMPV; then
6242         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6243         check_cc <<EOF && enable symver_asm_label
6244 void ff_foo(void) __asm__ ("av_foo@VERSION");
6245 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6246 EOF
6247         check_cc <<EOF && enable symver_gnu_asm
6248 __asm__(".symver ff_foo,av_foo@VERSION");
6249 void ff_foo(void) {}
6250 EOF
6251     fi
6252 fi
6253
6254 if [ -z "$optflags" ]; then
6255     if enabled small; then
6256         optflags=$cflags_size
6257     elif enabled optimizations; then
6258         optflags=$cflags_speed
6259     else
6260         optflags=$cflags_noopt
6261     fi
6262 fi
6263
6264 if [ -z "$nvccflags" ]; then
6265     nvccflags=$nvccflags_default
6266 fi
6267
6268 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6269     nvccflags="$nvccflags -m64"
6270 else
6271     nvccflags="$nvccflags -m32"
6272 fi
6273
6274 check_optflags(){
6275     check_cflags "$@"
6276     enabled lto && check_ldflags "$@"
6277 }
6278
6279 check_optflags $optflags
6280 check_optflags -fno-math-errno
6281 check_optflags -fno-signed-zeros
6282
6283 if enabled lto; then
6284     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6285     check_cflags  -flto
6286     check_ldflags -flto $cpuflags
6287     disable inline_asm_direct_symbol_refs
6288 fi
6289
6290 enabled ftrapv && check_cflags -ftrapv
6291
6292 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6293 int x;
6294 EOF
6295
6296
6297 if enabled icc; then
6298     # Just warnings, no remarks
6299     check_cflags -w1
6300     # -wd: Disable following warnings
6301     # 144, 167, 556: -Wno-pointer-sign
6302     # 188: enumerated type mixed with another type
6303     # 1292: attribute "foo" ignored
6304     # 1419: external declaration in primary source file
6305     # 10006: ignoring unknown option -fno-signed-zeros
6306     # 10148: ignoring unknown option -Wno-parentheses
6307     # 10156: ignoring option '-W'; no argument required
6308     # 13200: No EMMS instruction before call to function
6309     # 13203: No EMMS instruction before return from function
6310     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6311     # 11030: Warning unknown option --as-needed
6312     # 10156: ignoring option '-export'; no argument required
6313     check_ldflags -wd10156,11030
6314     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6315     enable ebp_available
6316     # The test above does not test linking
6317     enabled lto && disable symver_asm_label
6318     if enabled x86_32; then
6319         icc_version=$($cc -dumpversion)
6320         test ${icc_version%%.*} -ge 11 &&
6321             check_cflags -falign-stack=maintain-16-byte ||
6322             disable aligned_stack
6323     fi
6324 elif enabled ccc; then
6325     # disable some annoying warnings
6326     add_cflags -msg_disable bitnotint
6327     add_cflags -msg_disable mixfuncvoid
6328     add_cflags -msg_disable nonstandcast
6329     add_cflags -msg_disable unsupieee
6330 elif enabled gcc; then
6331     check_optflags -fno-tree-vectorize
6332     check_cflags -Werror=format-security
6333     check_cflags -Werror=implicit-function-declaration
6334     check_cflags -Werror=missing-prototypes
6335     check_cflags -Werror=return-type
6336     check_cflags -Werror=vla
6337     check_cflags -Wformat
6338     check_cflags -fdiagnostics-color=auto
6339     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6340 elif enabled llvm_gcc; then
6341     check_cflags -mllvm -stack-alignment=16
6342 elif enabled clang; then
6343     check_cflags -mllvm -stack-alignment=16
6344     check_cflags -mstack-alignment=16
6345     check_cflags -Qunused-arguments
6346     check_cflags -Werror=implicit-function-declaration
6347     check_cflags -Werror=missing-prototypes
6348     check_cflags -Werror=return-type
6349 elif enabled cparser; then
6350     add_cflags -Wno-missing-variable-declarations
6351     add_cflags -Wno-empty-statement
6352 elif enabled armcc; then
6353     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6354     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6355     # 2523: use of inline assembly is deprecated
6356     add_cflags -W${armcc_opt},--diag_suppress=2523
6357     add_cflags -W${armcc_opt},--diag_suppress=1207
6358     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6359     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6360     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6361     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6362 elif enabled tms470; then
6363     add_cflags -pds=824 -pds=837
6364     disable inline_asm
6365 elif enabled pathscale; then
6366     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6367 elif enabled_any msvc icl; then
6368     enabled x86_32 && disable aligned_stack
6369     enabled_all x86_32 debug && add_cflags -Oy-
6370     enabled debug && add_ldflags -debug
6371     enable pragma_deprecated
6372     if enabled icl; then
6373         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6374         # (correctly) on icl 13.x.
6375         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6376             add_cflags -Qansi-alias
6377         # Some inline asm is not compilable in debug
6378         if enabled debug; then
6379             disable ebp_available
6380             disable ebx_available
6381         fi
6382     fi
6383     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6384     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6385     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6386     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6387     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6388     # MSVC 2013 and newer can handle it fine.
6389     # If this declspec fails, force including stdlib.h before the restrict redefinition
6390     # happens in config.h.
6391     if [ $_restrict != restrict ]; then
6392         check_cc <<EOF || add_cflags -FIstdlib.h
6393 __declspec($_restrict) void* foo(int);
6394 EOF
6395     fi
6396     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6397     # Issue has been fixed in MSVC v19.00.24218.
6398     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6399         check_cflags -d2SSAOptimizer-
6400     # enable utf-8 source processing on VS2015 U2 and newer
6401     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6402         add_cflags -utf-8
6403 fi
6404
6405 for pfx in "" host_; do
6406     varname=${pfx%_}cc_type
6407     eval "type=\$$varname"
6408     if [ "$type" = "msvc" ]; then
6409         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6410 static inline int foo(int a) { return a; }
6411 EOF
6412     fi
6413 done
6414
6415 case $as_type in
6416     clang)
6417         add_asflags -Qunused-arguments
6418     ;;
6419 esac
6420
6421 case $ld_type in
6422     clang)
6423         check_ldflags -Qunused-arguments
6424     ;;
6425 esac
6426
6427 case $target_os in
6428     osf1)
6429         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6430     ;;
6431 esac
6432
6433 enable frame_thread_encoder
6434
6435 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6436
6437 check_deps $CONFIG_LIST       \
6438            $CONFIG_EXTRA      \
6439            $HAVE_LIST         \
6440            $ALL_COMPONENTS    \
6441
6442 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"
6443
6444
6445 if test $target_os = "haiku"; then
6446     disable memalign
6447     disable posix_memalign
6448 fi
6449
6450 # add_dep lib dep
6451 # -> enable ${lib}_deps_${dep}
6452 # -> add $dep to ${lib}_deps only once
6453 add_dep() {
6454     lib=$1
6455     dep=$2
6456     enabled "${lib}_deps_${dep}" && return 0
6457     enable  "${lib}_deps_${dep}"
6458     prepend "${lib}_deps" $dep
6459 }
6460
6461 # merge deps lib components
6462 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6463 merge_deps() {
6464     lib=$1
6465     shift
6466     for comp in $*; do
6467         enabled $comp || continue
6468         eval "dep=\"\$${comp}_deps\""
6469         for d in $dep; do
6470             add_dep $lib $d
6471         done
6472     done
6473 }
6474
6475 merge_deps libavfilter $FILTER_LIST
6476
6477 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6478
6479 for thread in $THREADS_LIST; do
6480     if enabled $thread; then
6481         test -n "$thread_type" &&
6482             die "ERROR: Only one thread type must be selected." ||
6483             thread_type="$thread"
6484     fi
6485 done
6486
6487 if disabled stdatomic_h; then
6488     if enabled atomics_gcc; then
6489         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6490     elif enabled atomics_win32; then
6491         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6492     elif enabled atomics_suncc; then
6493         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6494     elif enabled pthreads; then
6495         add_compat atomics/pthread/stdatomic.o
6496         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6497     else
6498         enabled threads && die "Threading is enabled, but no atomics are available"
6499         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6500     fi
6501 fi
6502
6503 # Check if requested libraries were found.
6504 for lib in $AUTODETECT_LIBS; do
6505     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6506 done
6507
6508 enabled zlib && add_cppflags -DZLIB_CONST
6509
6510 # conditional library dependencies, in linking order
6511 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6512 enabled afir_filter         && prepend avfilter_deps "avcodec"
6513 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6514 enabled aresample_filter    && prepend avfilter_deps "swresample"
6515 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6516 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6517 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6518 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6519 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6520 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6521 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6522 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6523 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6524 enabled pan_filter          && prepend avfilter_deps "swresample"
6525 enabled pp_filter           && prepend avfilter_deps "postproc"
6526 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6527 enabled resample_filter && prepend avfilter_deps "avresample"
6528 enabled sab_filter          && prepend avfilter_deps "swscale"
6529 enabled scale_filter    && prepend avfilter_deps "swscale"
6530 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6531 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6532 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6533 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6534 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6535 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6536 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6537 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6538 enabled spp_filter          && prepend avfilter_deps "avcodec"
6539 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6540 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6541 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6542
6543 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6544
6545 enabled opus_decoder    && prepend avcodec_deps "swresample"
6546
6547 expand_deps(){
6548     lib_deps=${1}_deps
6549     eval "deps=\$$lib_deps"
6550     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6551     unique $lib_deps
6552 }
6553
6554 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6555 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6556
6557 map 'expand_deps $v' $LIBRARY_LIST
6558
6559 license="LGPL version 2.1 or later"
6560 if enabled nonfree; then
6561     license="nonfree and unredistributable"
6562 elif enabled gplv3; then
6563     license="GPL version 3 or later"
6564 elif enabled lgplv3; then
6565     license="LGPL version 3 or later"
6566 elif enabled gpl; then
6567     license="GPL version 2 or later"
6568 fi
6569
6570 if test "$quiet" != "yes"; then
6571
6572 echo "install prefix            $prefix"
6573 echo "source path               $source_path"
6574 echo "C compiler                $cc"
6575 echo "C library                 $libc_type"
6576 if test "$host_cc" != "$cc"; then
6577     echo "host C compiler           $host_cc"
6578     echo "host C library            $host_libc_type"
6579 fi
6580 echo "ARCH                      $arch ($cpu)"
6581 if test "$build_suffix" != ""; then
6582     echo "build suffix              $build_suffix"
6583 fi
6584 if test "$progs_suffix" != ""; then
6585     echo "progs suffix              $progs_suffix"
6586 fi
6587 if test "$extra_version" != ""; then
6588     echo "version string suffix     $extra_version"
6589 fi
6590 echo "big-endian                ${bigendian-no}"
6591 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6592 if enabled x86; then
6593     echo "${yasmexe}                      ${yasm-no}"
6594     echo "MMX enabled               ${mmx-no}"
6595     echo "MMXEXT enabled            ${mmxext-no}"
6596     echo "3DNow! enabled            ${amd3dnow-no}"
6597     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6598     echo "SSE enabled               ${sse-no}"
6599     echo "SSSE3 enabled             ${ssse3-no}"
6600     echo "AESNI enabled             ${aesni-no}"
6601     echo "AVX enabled               ${avx-no}"
6602     echo "XOP enabled               ${xop-no}"
6603     echo "FMA3 enabled              ${fma3-no}"
6604     echo "FMA4 enabled              ${fma4-no}"
6605     echo "i686 features enabled     ${i686-no}"
6606     echo "CMOV is fast              ${fast_cmov-no}"
6607     echo "EBX available             ${ebx_available-no}"
6608     echo "EBP available             ${ebp_available-no}"
6609 fi
6610 if enabled aarch64; then
6611     echo "NEON enabled              ${neon-no}"
6612     echo "VFP enabled               ${vfp-no}"
6613 fi
6614 if enabled arm; then
6615     echo "ARMv5TE enabled           ${armv5te-no}"
6616     echo "ARMv6 enabled             ${armv6-no}"
6617     echo "ARMv6T2 enabled           ${armv6t2-no}"
6618     echo "VFP enabled               ${vfp-no}"
6619     echo "NEON enabled              ${neon-no}"
6620     echo "THUMB enabled             ${thumb-no}"
6621 fi
6622 if enabled mips; then
6623     echo "MIPS FPU enabled          ${mipsfpu-no}"
6624     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6625     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6626     echo "MIPS MSA enabled          ${msa-no}"
6627     echo "LOONGSON MMI enabled      ${mmi-no}"
6628 fi
6629 if enabled ppc; then
6630     echo "AltiVec enabled           ${altivec-no}"
6631     echo "VSX enabled               ${vsx-no}"
6632     echo "POWER8 enabled            ${power8-no}"
6633     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6634     echo "dcbzl available           ${dcbzl-no}"
6635 fi
6636 echo "debug symbols             ${debug-no}"
6637 echo "strip symbols             ${stripping-no}"
6638 echo "optimize for size         ${small-no}"
6639 echo "optimizations             ${optimizations-no}"
6640 echo "static                    ${static-no}"
6641 echo "shared                    ${shared-no}"
6642 echo "postprocessing support    ${postproc-no}"
6643 echo "network support           ${network-no}"
6644 echo "threading support         ${thread_type-no}"
6645 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6646 echo "texi2html enabled         ${texi2html-no}"
6647 echo "perl enabled              ${perl-no}"
6648 echo "pod2man enabled           ${pod2man-no}"
6649 echo "makeinfo enabled          ${makeinfo-no}"
6650 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6651 test -n "$random_seed" &&
6652     echo "random seed               ${random_seed}"
6653 echo
6654
6655 echo "External libraries:"
6656 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6657 echo
6658
6659 echo "External libraries providing hardware acceleration:"
6660 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6661 echo
6662
6663 echo "Libraries:"
6664 print_enabled '' $LIBRARY_LIST | print_in_columns
6665 echo
6666
6667 echo "Programs:"
6668 print_enabled '' $PROGRAM_LIST | print_in_columns
6669 echo
6670
6671 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6672     echo "Enabled ${type}s:"
6673     eval list=\$$(toupper $type)_LIST
6674     print_enabled '_*' $list | print_in_columns
6675     echo
6676 done
6677
6678 if test -n "$ignore_tests"; then
6679     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6680     echo "Ignored FATE tests:"
6681     echo $ignore_tests | print_in_columns
6682     echo
6683 fi
6684
6685 echo "License: $license"
6686
6687 echo "Creating configuration files ..."
6688
6689 fi # test "$quiet" != "yes"
6690
6691 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6692
6693 enabled stripping || strip="echo skipping strip"
6694
6695 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6696
6697 cat > ffbuild/config.mak <<EOF
6698 # Automatically generated by configure - do not modify!
6699 ifndef FFMPEG_CONFIG_MAK
6700 FFMPEG_CONFIG_MAK=1
6701 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6702 prefix=$prefix
6703 LIBDIR=\$(DESTDIR)$libdir
6704 SHLIBDIR=\$(DESTDIR)$shlibdir
6705 INCDIR=\$(DESTDIR)$incdir
6706 BINDIR=\$(DESTDIR)$bindir
6707 DATADIR=\$(DESTDIR)$datadir
6708 DOCDIR=\$(DESTDIR)$docdir
6709 MANDIR=\$(DESTDIR)$mandir
6710 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6711 INSTALL_NAME_DIR=$install_name_dir
6712 SRC_PATH=$source_path
6713 SRC_LINK=$source_link
6714 ifndef MAIN_MAKEFILE
6715 SRC_PATH:=\$(SRC_PATH:.%=..%)
6716 endif
6717 CC_IDENT=$cc_ident
6718 ARCH=$arch
6719 INTRINSICS=$intrinsics
6720 CC=$cc
6721 CXX=$cxx
6722 AS=$as
6723 OBJCC=$objcc
6724 LD=$ld
6725 DEPCC=$dep_cc
6726 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6727 DEPAS=$as
6728 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6729 YASM=$yasmexe
6730 DEPYASM=$yasmexe
6731 AR=$ar
6732 ARFLAGS=$arflags
6733 AR_O=$ar_o
6734 RANLIB=$ranlib
6735 STRIP=$strip
6736 NVCC=$nvcc
6737 CP=cp -p
6738 LN_S=$ln_s
6739 CPPFLAGS=$CPPFLAGS
6740 CFLAGS=$CFLAGS
6741 CXXFLAGS=$CXXFLAGS
6742 OBJCFLAGS=$OBJCFLAGS
6743 ASFLAGS=$ASFLAGS
6744 NVCCFLAGS=$nvccflags
6745 AS_C=$AS_C
6746 AS_O=$AS_O
6747 OBJCC_C=$OBJCC_C
6748 OBJCC_E=$OBJCC_E
6749 OBJCC_O=$OBJCC_O
6750 CC_C=$CC_C
6751 CC_E=$CC_E
6752 CC_O=$CC_O
6753 CXX_C=$CXX_C
6754 CXX_O=$CXX_O
6755 NVCC_C=$NVCC_C
6756 NVCC_O=$NVCC_O
6757 LD_O=$LD_O
6758 LD_LIB=$LD_LIB
6759 LD_PATH=$LD_PATH
6760 DLLTOOL=$dlltool
6761 WINDRES=$windres
6762 DEPWINDRES=$dep_cc
6763 DOXYGEN=$doxygen
6764 LDFLAGS=$LDFLAGS
6765 LDEXEFLAGS=$LDEXEFLAGS
6766 LDLIBFLAGS=$LDLIBFLAGS
6767 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6768 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6769 YASMFLAGS=$YASMFLAGS
6770 BUILDSUF=$build_suffix
6771 PROGSSUF=$progs_suffix
6772 FULLNAME=$FULLNAME
6773 LIBPREF=$LIBPREF
6774 LIBSUF=$LIBSUF
6775 LIBNAME=$LIBNAME
6776 SLIBPREF=$SLIBPREF
6777 SLIBSUF=$SLIBSUF
6778 EXESUF=$EXESUF
6779 EXTRA_VERSION=$extra_version
6780 CCDEP=$CCDEP
6781 CXXDEP=$CXXDEP
6782 CCDEP_FLAGS=$CCDEP_FLAGS
6783 ASDEP=$ASDEP
6784 ASDEP_FLAGS=$ASDEP_FLAGS
6785 CC_DEPFLAGS=$CC_DEPFLAGS
6786 AS_DEPFLAGS=$AS_DEPFLAGS
6787 HOSTCC=$host_cc
6788 HOSTLD=$host_ld
6789 HOSTCFLAGS=$host_cflags
6790 HOSTCPPFLAGS=$host_cppflags
6791 HOSTEXESUF=$HOSTEXESUF
6792 HOSTLDFLAGS=$host_ldflags
6793 HOSTEXTRALIBS=$host_extralibs
6794 DEPHOSTCC=$host_cc
6795 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6796 HOSTCCDEP=$HOSTCCDEP
6797 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6798 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6799 HOSTCC_C=$HOSTCC_C
6800 HOSTCC_O=$HOSTCC_O
6801 HOSTLD_O=$HOSTLD_O
6802 TARGET_EXEC=$target_exec $target_exec_args
6803 TARGET_PATH=$target_path
6804 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6805 CFLAGS-ffplay=${sdl2_cflags}
6806 CFLAGS_HEADERS=$CFLAGS_HEADERS
6807 ZLIB=$($ldflags_filter -lz)
6808 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6809 EXTRALIBS=$extralibs
6810 COMPAT_OBJS=$compat_objs
6811 INSTALL=$install
6812 LIBTARGET=${LIBTARGET}
6813 SLIBNAME=${SLIBNAME}
6814 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6815 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6816 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6817 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6818 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6819 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6820 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6821 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6822 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6823 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6824 NOREDZONE_FLAGS=$noredzone_flags
6825 LIBFUZZER_PATH=$libfuzzer_path
6826 IGNORE_TESTS=$ignore_tests
6827 EOF
6828
6829 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
6830
6831 print_program_extralibs(){
6832     eval "program_extralibs=\$${1}_extralibs"
6833     eval echo "EXTRALIBS-${1}=${program_extralibs}" >> ffbuild/config.mak
6834 }
6835
6836 map 'print_program_extralibs $v' $PROGRAM_LIST
6837
6838 cat > $TMPH <<EOF
6839 /* Automatically generated by configure - do not modify! */
6840 #ifndef FFMPEG_CONFIG_H
6841 #define FFMPEG_CONFIG_H
6842 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6843 #define FFMPEG_LICENSE "$(c_escape $license)"
6844 #define CONFIG_THIS_YEAR 2017
6845 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6846 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6847 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6848 #define av_restrict $_restrict
6849 #define EXTERN_PREFIX "${extern_prefix}"
6850 #define EXTERN_ASM ${extern_prefix}
6851 #define BUILDSUF "$build_suffix"
6852 #define SLIBSUF "$SLIBSUF"
6853 #define HAVE_MMX2 HAVE_MMXEXT
6854 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6855 EOF
6856
6857 test -n "$assert_level" &&
6858     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6859
6860 test -n "$malloc_prefix" &&
6861     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6862
6863 if enabled yasm; then
6864     append config_files $TMPASM
6865     printf '' >$TMPASM
6866 fi
6867
6868 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6869
6870
6871 mkdir -p doc
6872 mkdir -p tests
6873 mkdir -p tests/api
6874 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6875
6876 print_config ARCH_   "$config_files" $ARCH_LIST
6877 print_config HAVE_   "$config_files" $HAVE_LIST
6878 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6879                                      $CONFIG_EXTRA      \
6880                                      $ALL_COMPONENTS    \
6881
6882 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6883 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
6884
6885 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6886 cp_if_changed $TMPH config.h
6887 touch ffbuild/.config
6888
6889 enabled yasm && cp_if_changed $TMPASM config.asm
6890
6891 cat > $TMPH <<EOF
6892 /* Generated by ffconf */
6893 #ifndef AVUTIL_AVCONFIG_H
6894 #define AVUTIL_AVCONFIG_H
6895 EOF
6896
6897 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6898
6899 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6900
6901 cp_if_changed $TMPH libavutil/avconfig.h
6902
6903 # generate the lists of enabled components
6904 print_enabled_components(){
6905     file=$1
6906     struct_name=$2
6907     name=$3
6908     shift 3
6909     echo "static const $struct_name *$name[] = {" > $TMPH
6910     for c in $*; do
6911         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6912     done
6913     echo "    NULL };" >> $TMPH
6914     cp_if_changed $TMPH $file
6915 }
6916
6917 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6918 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6919
6920 if test -n "$WARNINGS"; then
6921     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6922     enabled fatal_warnings && exit 1
6923 fi
6924
6925 # Settings for pkg-config files
6926
6927 cat > ffbuild/config.sh <<EOF
6928 # Automatically generated by configure - do not modify!
6929 shared=$shared
6930 build_suffix=$build_suffix
6931 prefix=$prefix
6932 libdir=$libdir
6933 incdir=$incdir
6934 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
6935 source_path=${source_path}
6936 LIBPREF=${LIBPREF}
6937 LIBSUF=${LIBSUF}
6938
6939 extralibs_avutil="$LIBRT $LIBM"
6940 extralibs_avcodec="$extralibs"
6941 extralibs_avformat="$extralibs"
6942 extralibs_avdevice="$extralibs"
6943 extralibs_avfilter="$extralibs"
6944 extralibs_avresample="$LIBM"
6945 extralibs_postproc=""
6946 extralibs_swscale="$LIBM"
6947 extralibs_swresample="$LIBM $LIBSOXR"
6948 EOF
6949
6950 for lib in $LIBRARY_LIST; do
6951     lib_deps="$(eval echo \$${lib}_deps)"
6952     echo ${lib}_deps=\"$lib_deps\" >> ffbuild/config.sh
6953 done