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-libnut          enable NUT (de)muxing via libnut,
 238                            native (de)muxer exists [no]
 239   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 240   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 241   --enable-libopencv       enable video filtering via libopencv [no]
 242   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 243   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 244   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 245   --enable-libopus         enable Opus de/encoding via libopus [no]
 246   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 247   --enable-librsvg         enable SVG rasterization via librsvg [no]
 248   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 249   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 250   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 251   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 252   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 253   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 254   --enable-libsoxr         enable Include libsoxr resampling [no]
 255   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 256   --enable-libssh          enable SFTP protocol via libssh [no]
 257   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 258   --enable-libtheora       enable Theora encoding via libtheora [no]
 259   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 260   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 261   --enable-libvidstab      enable video stabilization using vid.stab [no]
 262   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 263   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 264                            native implementation exists [no]
 265   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 266   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 267   --enable-libwebp         enable WebP encoding via libwebp [no]
 268   --enable-libx264         enable H.264 encoding via x264 [no]
 269   --enable-libx265         enable HEVC encoding via x265 [no]
 270   --enable-libxavs         enable AVS encoding via xavs [no]
 271   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 272   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 273   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 274   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 275   --enable-libxvid         enable Xvid encoding via xvidcore,
 276                            native MPEG-4/Xvid encoder exists [no]
 277   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 278   --enable-libzmq          enable message passing via libzmq [no]
 279   --enable-libzvbi         enable teletext support via libzvbi [no]
 280   --disable-lzma           disable lzma [autodetect]
 281   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 282   --enable-mediacodec      enable Android MediaCodec support [no]
 283   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
 284   --enable-openal          enable OpenAL 1.1 capture support [no]
 285   --enable-opencl          enable OpenCL code
 286   --enable-opengl          enable OpenGL rendering [no]
 287   --enable-openssl         enable openssl, needed for https support
 288                            if gnutls is not used [no]
 289   --disable-schannel       disable SChannel SSP, needed for TLS support on
 290                            Windows if openssl and gnutls are not used [autodetect]
 291   --disable-sdl2           disable sdl2 [autodetect]
 292   --disable-securetransport disable Secure Transport, needed for TLS support
 293                            on OSX if openssl and gnutls are not used [autodetect]
 294   --disable-xlib           disable xlib [autodetect]
 295   --disable-zlib           disable zlib [autodetect]
 296
 297   The following libraries provide various hardware acceleration features:
 298   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 299   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
 300   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
 301   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 302   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 303   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 304   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 305   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 306   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 307   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 308   --enable-omx             enable OpenMAX IL code [no]
 309   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 310   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 311   --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
 312   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 313   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 314
 315 Toolchain options:
 316   --arch=ARCH              select architecture [$arch]
 317   --cpu=CPU                select the minimum required CPU (affects
 318                            instruction selection, may crash on older CPUs)
 319   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 320   --progs-suffix=SUFFIX    program name suffix []
 321   --enable-cross-compile   assume a cross-compiler is used
 322   --sysroot=PATH           root of cross-build tree
 323   --sysinclude=PATH        location of cross-build system headers
 324   --target-os=OS           compiler targets OS [$target_os]
 325   --target-exec=CMD        command to run executables on target
 326   --target-path=DIR        path to view of build directory on target
 327   --target-samples=DIR     path to samples directory on target
 328   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 329   --toolchain=NAME         set tool defaults according to NAME
 330   --nm=NM                  use nm tool NM [$nm_default]
 331   --ar=AR                  use archive tool AR [$ar_default]
 332   --as=AS                  use assembler AS [$as_default]
 333   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 334   --strip=STRIP            use strip tool STRIP [$strip_default]
 335   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 336   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 337   --cc=CC                  use C compiler CC [$cc_default]
 338   --cxx=CXX                use C compiler CXX [$cxx_default]
 339   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 340   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 341   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 342   --ld=LD                  use linker LD [$ld_default]
 343   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 344   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 345   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 346   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 347   --host-cc=HOSTCC         use host C compiler HOSTCC
 348   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 349   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 350   --host-ld=HOSTLD         use host linker HOSTLD
 351   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 352   --host-libs=HLIBS        use libs HLIBS when linking for host
 353   --host-os=OS             compiler host OS [$target_os]
 354   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 355   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 356   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 357   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 358   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 359   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 360   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 361   --extra-version=STRING   version string suffix []
 362   --optflags=OPTFLAGS      override optimization-related compiler flags
 363   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 364   --build-suffix=SUFFIX    library name suffix []
 365   --enable-pic             build position-independent code
 366   --enable-thumb           compile for Thumb instruction set
 367   --enable-lto             use link-time optimization
 368   --env="ENV=override"     override the environment variables
 369
 370 Advanced options (experts only):
 371   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 372   --custom-allocator=NAME  use a supported custom allocator
 373   --disable-symver         disable symbol versioning
 374   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 375   --disable-safe-bitstream-reader
 376                            disable buffer boundary checking in bitreaders
 377                            (faster, but may crash)
 378   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 379
 380 Optimization options (experts only):
 381   --disable-asm            disable all assembly optimizations
 382   --disable-altivec        disable AltiVec optimizations
 383   --disable-vsx            disable VSX optimizations
 384   --disable-power8         disable POWER8 optimizations
 385   --disable-amd3dnow       disable 3DNow! optimizations
 386   --disable-amd3dnowext    disable 3DNow! extended optimizations
 387   --disable-mmx            disable MMX optimizations
 388   --disable-mmxext         disable MMXEXT optimizations
 389   --disable-sse            disable SSE optimizations
 390   --disable-sse2           disable SSE2 optimizations
 391   --disable-sse3           disable SSE3 optimizations
 392   --disable-ssse3          disable SSSE3 optimizations
 393   --disable-sse4           disable SSE4 optimizations
 394   --disable-sse42          disable SSE4.2 optimizations
 395   --disable-avx            disable AVX optimizations
 396   --disable-xop            disable XOP optimizations
 397   --disable-fma3           disable FMA3 optimizations
 398   --disable-fma4           disable FMA4 optimizations
 399   --disable-avx2           disable AVX2 optimizations
 400   --disable-aesni          disable AESNI optimizations
 401   --disable-armv5te        disable armv5te optimizations
 402   --disable-armv6          disable armv6 optimizations
 403   --disable-armv6t2        disable armv6t2 optimizations
 404   --disable-vfp            disable VFP optimizations
 405   --disable-neon           disable NEON optimizations
 406   --disable-inline-asm     disable use of inline assembly
 407   --disable-yasm           disable use of nasm/yasm assembly
 408   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 409   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 410   --disable-msa            disable MSA optimizations
 411   --disable-mipsfpu        disable floating point MIPS optimizations
 412   --disable-mmi            disable Loongson SIMD optimizations
 413   --disable-fast-unaligned consider unaligned accesses slow
 414
 415 Developer options (useful when working on FFmpeg itself):
 416   --disable-debug          disable debugging symbols
 417   --enable-debug=LEVEL     set the debug level [$debuglevel]
 418   --disable-optimizations  disable compiler optimizations
 419   --enable-extra-warnings  enable more compiler warnings
 420   --disable-stripping      disable stripping of executables and shared libraries
 421   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 422                            2 causes a slowdown at runtime.
 423   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 424   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 425                            leaks and errors, using the specified valgrind binary.
 426                            Cannot be combined with --target-exec
 427   --enable-ftrapv          Trap arithmetic overflows
 428   --samples=PATH           location of test samples for FATE, if not set use
 429                            \$FATE_SAMPLES at make invocation time.
 430   --enable-neon-clobber-test check NEON registers for clobbering (should be
 431                            used only for debugging purposes)
 432   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 433                            should be used only for debugging purposes)
 434   --enable-random          randomly enable/disable components
 435   --disable-random
 436   --enable-random=LIST     randomly enable/disable specific components or
 437   --disable-random=LIST    component groups. LIST is a comma-separated list
 438                            of NAME[:PROB] entries where NAME is a component
 439                            (group) and PROB the probability associated with
 440                            NAME (default 0.5).
 441   --random-seed=VALUE      seed value for --enable/disable-random
 442   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 443                            (only applies to --disable-optimizations builds)
 444   --enable-osfuzz          Enable building fuzzer tool
 445   --libfuzzer=PATH         path to libfuzzer
 446   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 447                            in the name) of tests whose result is ignored
 448
 449 NOTE: Object files are built at the place where configure is launched.
 450 EOF
 451   exit 0
 452 }
 453
 454 quotes='""'
 455 if test -t 1 && which tput >/dev/null 2>&1; then
 456     ncolors=$(tput colors)
 457     if test -n "$ncolors" && test $ncolors -ge 8; then
 458         bold_color=$(tput bold)
 459         warn_color=$(tput setaf 3)
 460         error_color=$(tput setaf 1)
 461         reset_color=$(tput sgr0)
 462     fi
 463     # 72 used instead of 80 since that's the default of pr
 464     ncols=$(tput cols)
 465 fi
 466 : ${ncols:=72}
 467
 468 log(){
 469     echo "$@" >> $logfile
 470 }
 471
 472 log_file(){
 473     log BEGIN $1
 474     pr -n -t $1 >> $logfile
 475     log END $1
 476 }
 477
 478 warn(){
 479     log "WARNING: $*"
 480     WARNINGS="${WARNINGS}WARNING: $*\n"
 481 }
 482
 483 die(){
 484     log "$@"
 485     echo "$error_color$bold_color$@$reset_color"
 486     cat <<EOF
 487
 488 If you think configure made a mistake, make sure you are using the latest
 489 version from Git.  If the latest version fails, report the problem to the
 490 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 491 EOF
 492     if disabled logging; then
 493         cat <<EOF
 494 Rerun configure with logging enabled (do not use --disable-logging), and
 495 include the log this produces with your report.
 496 EOF
 497     else
 498         cat <<EOF
 499 Include the log file "$logfile" produced by configure as this will help
 500 solve the problem.
 501 EOF
 502     fi
 503     exit 1
 504 }
 505
 506 # Avoid locale weirdness, besides we really just want to translate ASCII.
 507 toupper(){
 508     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 509 }
 510
 511 tolower(){
 512     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 513 }
 514
 515 c_escape(){
 516     echo "$*" | sed 's/["\\]/\\\0/g'
 517 }
 518
 519 sh_quote(){
 520     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 521     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 522     echo "$v"
 523 }
 524
 525 cleanws(){
 526     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 527 }
 528
 529 filter(){
 530     pat=$1
 531     shift
 532     for v; do
 533         eval "case $v in $pat) printf '%s ' $v ;; esac"
 534     done
 535 }
 536
 537 filter_out(){
 538     pat=$1
 539     shift
 540     for v; do
 541         eval "case $v in $pat) ;; *) printf '%s ' $v ;; esac"
 542     done
 543 }
 544
 545 map(){
 546     m=$1
 547     shift
 548     for v; do eval $m; done
 549 }
 550
 551 add_suffix(){
 552     suffix=$1
 553     shift
 554     for v; do echo ${v}${suffix}; done
 555 }
 556
 557 set_all(){
 558     value=$1
 559     shift
 560     for var in $*; do
 561         eval $var=$value
 562     done
 563 }
 564
 565 set_weak(){
 566     value=$1
 567     shift
 568     for var; do
 569         eval : \${$var:=$value}
 570     done
 571 }
 572
 573 sanitize_var_name(){
 574     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 575 }
 576
 577 set_safe(){
 578     var=$1
 579     shift
 580     eval $(sanitize_var_name "$var")='$*'
 581 }
 582
 583 get_safe(){
 584     eval echo \$$(sanitize_var_name "$1")
 585 }
 586
 587 pushvar(){
 588     for pvar in $*; do
 589         eval level=\${${pvar}_level:=0}
 590         eval ${pvar}_${level}="\$$pvar"
 591         eval ${pvar}_level=$(($level+1))
 592     done
 593 }
 594
 595 popvar(){
 596     for pvar in $*; do
 597         eval level=\${${pvar}_level:-0}
 598         test $level = 0 && continue
 599         eval level=$(($level-1))
 600         eval $pvar="\${${pvar}_${level}}"
 601         eval ${pvar}_level=$level
 602         eval unset ${pvar}_${level}
 603     done
 604 }
 605
 606 request(){
 607     for var in $*; do
 608         eval ${var}_requested=yes
 609         eval $var=
 610     done
 611 }
 612
 613 enable(){
 614     set_all yes $*
 615 }
 616
 617 disable(){
 618     set_all no $*
 619 }
 620
 621 enable_weak(){
 622     set_weak yes $*
 623 }
 624
 625 disable_weak(){
 626     set_weak no $*
 627 }
 628
 629 enable_safe(){
 630     for var; do
 631         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 632     done
 633 }
 634
 635 disable_safe(){
 636     for var; do
 637         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 638     done
 639 }
 640
 641 do_enable_deep(){
 642     for var; do
 643         enabled $var && continue
 644         eval sel="\$${var}_select"
 645         eval sgs="\$${var}_suggest"
 646         pushvar var sgs
 647         enable_deep $sel
 648         popvar sgs
 649         enable_deep_weak $sgs
 650         popvar var
 651     done
 652 }
 653
 654 enable_deep(){
 655     do_enable_deep $*
 656     enable $*
 657 }
 658
 659 enable_deep_weak(){
 660     for var; do
 661         disabled $var && continue
 662         pushvar var
 663         do_enable_deep $var
 664         popvar var
 665         enable_weak $var
 666     done
 667 }
 668
 669 requested(){
 670     test "${1#!}" = "$1" && op='=' || op=!=
 671     eval test "x\$${1#!}_requested" $op "xyes"
 672 }
 673
 674 enabled(){
 675     test "${1#!}" = "$1" && op='=' || op=!=
 676     eval test "x\$${1#!}" $op "xyes"
 677 }
 678
 679 disabled(){
 680     test "${1#!}" = "$1" && op='=' || op=!=
 681     eval test "x\$${1#!}" $op "xno"
 682 }
 683
 684 enabled_all(){
 685     for opt; do
 686         enabled $opt || return 1
 687     done
 688 }
 689
 690 disabled_all(){
 691     for opt; do
 692         disabled $opt || return 1
 693     done
 694 }
 695
 696 enabled_any(){
 697     for opt; do
 698         enabled $opt && return 0
 699     done
 700 }
 701
 702 disabled_any(){
 703     for opt; do
 704         disabled $opt && return 0
 705     done
 706     return 1
 707 }
 708
 709 set_default(){
 710     for opt; do
 711         eval : \${$opt:=\$${opt}_default}
 712     done
 713 }
 714
 715 is_in(){
 716     value=$1
 717     shift
 718     for var in $*; do
 719         [ $var = $value ] && return 0
 720     done
 721     return 1
 722 }
 723
 724 do_check_deps(){
 725     for cfg; do
 726         cfg="${cfg#!}"
 727         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 728         disabled ${cfg}_checking && continue
 729         enable ${cfg}_checking
 730         append allopts $cfg
 731
 732         eval dep_all="\$${cfg}_deps"
 733         eval dep_any="\$${cfg}_deps_any"
 734         eval dep_sel="\$${cfg}_select"
 735         eval dep_sgs="\$${cfg}_suggest"
 736         eval dep_ifa="\$${cfg}_if"
 737         eval dep_ifn="\$${cfg}_if_any"
 738
 739         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 740         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 741         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 742
 743         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 744         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 745         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 746         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 747         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 748
 749         if enabled $cfg; then
 750             enable_deep $dep_sel
 751             enable_deep_weak $dep_sgs
 752         fi
 753
 754         disable ${cfg}_checking
 755     done
 756 }
 757
 758 check_deps(){
 759     unset allopts
 760
 761     do_check_deps "$@"
 762
 763     for cfg in $allopts; do
 764         enabled $cfg || continue
 765         eval dep_extralibs="\$${cfg}_extralibs"
 766         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 767     done
 768 }
 769
 770 print_config(){
 771     pfx=$1
 772     files=$2
 773     shift 2
 774     map 'eval echo "$v \${$v:-no}"' "$@" |
 775     awk "BEGIN { split(\"$files\", files) }
 776         {
 777             c = \"$pfx\" toupper(\$1);
 778             v = \$2;
 779             sub(/yes/, 1, v);
 780             sub(/no/,  0, v);
 781             for (f in files) {
 782                 file = files[f];
 783                 if (file ~ /\\.h\$/) {
 784                     printf(\"#define %s %d\\n\", c, v) >>file;
 785                 } else if (file ~ /\\.asm\$/) {
 786                     printf(\"%%define %s %d\\n\", c, v) >>file;
 787                 } else if (file ~ /\\.mak\$/) {
 788                     n = -v ? \"\" : \"!\";
 789                     printf(\"%s%s=yes\\n\", n, c) >>file;
 790                 } else if (file ~ /\\.texi\$/) {
 791                     pre = -v ? \"\" : \"@c \";
 792                     yesno = \$2;
 793                     c2 = tolower(c);
 794                     gsub(/_/, \"-\", c2);
 795                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 796                 }
 797             }
 798         }"
 799 }
 800
 801 print_enabled(){
 802     suf=$1
 803     shift
 804     for v; do
 805         enabled $v && printf "%s\n" ${v%$suf}
 806     done
 807 }
 808
 809 append(){
 810     var=$1
 811     shift
 812     eval "$var=\"\$$var $*\""
 813 }
 814
 815 prepend(){
 816     var=$1
 817     shift
 818     eval "$var=\"$* \$$var\""
 819 }
 820
 821 unique(){
 822     var=$1
 823     uniq_list=""
 824     for tok in $(eval echo \$$var); do
 825         uniq_list="$(filter_out $tok $uniq_list) $tok"
 826     done
 827     eval "$var=\"${uniq_list}\""
 828 }
 829
 830 add_cppflags(){
 831     append CPPFLAGS "$@"
 832 }
 833
 834 add_cflags(){
 835     append CFLAGS $($cflags_filter "$@")
 836 }
 837
 838 add_cflags_headers(){
 839     append CFLAGS_HEADERS $($cflags_filter "$@")
 840 }
 841
 842 add_cxxflags(){
 843     append CXXFLAGS $($cflags_filter "$@")
 844 }
 845
 846 add_asflags(){
 847     append ASFLAGS $($asflags_filter "$@")
 848 }
 849
 850 add_objcflags(){
 851     append OBJCFLAGS $($objcflags_filter "$@")
 852 }
 853
 854 add_ldflags(){
 855     append LDFLAGS $($ldflags_filter "$@")
 856 }
 857
 858 add_ldexeflags(){
 859     append LDEXEFLAGS $($ldflags_filter "$@")
 860 }
 861
 862 add_ldlibflags(){
 863     append LDLIBFLAGS $($ldflags_filter "$@")
 864 }
 865
 866 add_stripflags(){
 867     append ASMSTRIPFLAGS "$@"
 868 }
 869
 870 add_extralibs(){
 871     prepend extralibs $($ldflags_filter "$@")
 872 }
 873
 874 add_host_cppflags(){
 875     append host_cppflags "$@"
 876 }
 877
 878 add_host_cflags(){
 879     append host_cflags $($host_cflags_filter "$@")
 880 }
 881
 882 add_host_ldflags(){
 883     append host_ldflags $($host_ldflags_filter "$@")
 884 }
 885
 886 add_compat(){
 887     append compat_objs $1
 888     shift
 889     map 'add_cppflags -D$v' "$@"
 890 }
 891
 892 check_cmd(){
 893     log "$@"
 894     "$@" >> $logfile 2>&1
 895 }
 896
 897 check_stat(){
 898     log check_stat "$@"
 899     stat "$1" >> $logfile 2>&1
 900 }
 901
 902 cc_o(){
 903     eval printf '%s\\n' $CC_O
 904 }
 905
 906 cc_e(){
 907     eval printf '%s\\n' $CC_E
 908 }
 909
 910 check_cc(){
 911     log check_cc "$@"
 912     cat > $TMPC
 913     log_file $TMPC
 914     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 915 }
 916
 917 check_cxx(){
 918     log check_cxx "$@"
 919     cat > $TMPCPP
 920     log_file $TMPCPP
 921     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 922 }
 923
 924 check_objcc(){
 925     log check_objcc "$@"
 926     cat > $TMPM
 927     log_file $TMPM
 928     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 929 }
 930
 931 check_cpp(){
 932     log check_cpp "$@"
 933     cat > $TMPC
 934     log_file $TMPC
 935     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 936 }
 937
 938 as_o(){
 939     eval printf '%s\\n' $AS_O
 940 }
 941
 942 check_as(){
 943     log check_as "$@"
 944     cat > $TMPS
 945     log_file $TMPS
 946     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 947 }
 948
 949 check_inline_asm(){
 950     log check_inline_asm "$@"
 951     name="$1"
 952     code="$2"
 953     shift 2
 954     disable $name
 955     check_cc "$@" <<EOF && enable $name
 956 void foo(void){ __asm__ volatile($code); }
 957 EOF
 958 }
 959
 960 check_inline_asm_flags(){
 961     log check_inline_asm_flags "$@"
 962     name="$1"
 963     code="$2"
 964     flags=''
 965     shift 2
 966     while [ "$1" != "" ]; do
 967       append flags $1
 968       shift
 969     done;
 970     disable $name
 971     cat > $TMPC <<EOF
 972 void foo(void){ __asm__ volatile($code); }
 973 EOF
 974     log_file $TMPC
 975     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 976     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 977 }
 978
 979 check_insn(){
 980     log check_insn "$@"
 981     check_inline_asm ${1}_inline "\"$2\""
 982     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 983 }
 984
 985 check_yasm(){
 986     log check_yasm "$@"
 987     echo "$1" > $TMPS
 988     log_file $TMPS
 989     shift 1
 990     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 991 }
 992
 993 ld_o(){
 994     eval printf '%s\\n' $LD_O
 995 }
 996
 997 check_ld(){
 998     log check_ld "$@"
 999     type=$1
1000     shift 1
1001     flags=$(filter_out '-l*|*.so' $@)
1002     libs=$(filter '-l*|*.so' $@)
1003     check_$type $($cflags_filter $flags) || return
1004     flags=$($ldflags_filter $flags)
1005     libs=$($ldflags_filter $libs)
1006     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1007 }
1008
1009 print_include(){
1010     hdr=$1
1011     test "${hdr%.h}" = "${hdr}" &&
1012         echo "#include $hdr"    ||
1013         echo "#include <$hdr>"
1014 }
1015
1016 check_code(){
1017     log check_code "$@"
1018     check=$1
1019     headers=$2
1020     code=$3
1021     shift 3
1022     {
1023         for hdr in $headers; do
1024             print_include $hdr
1025         done
1026         echo "int main(void) { $code; return 0; }"
1027     } | check_$check "$@"
1028 }
1029
1030 check_cppflags(){
1031     log check_cppflags "$@"
1032     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1033 int x;
1034 EOF
1035 }
1036
1037 test_cflags(){
1038     log test_cflags "$@"
1039     set -- $($cflags_filter "$@")
1040     check_cc "$@" <<EOF
1041 int x;
1042 EOF
1043 }
1044
1045 check_cflags(){
1046     log check_cflags "$@"
1047     test_cflags "$@" && add_cflags "$@"
1048 }
1049
1050 check_cxxflags(){
1051     log check_cxxflags "$@"
1052     set -- $($cflags_filter "$@")
1053     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1054 int x;
1055 EOF
1056 }
1057
1058 test_objcflags(){
1059     log test_objcflags "$@"
1060     set -- $($objcflags_filter "$@")
1061     check_objcc "$@" <<EOF
1062 int x;
1063 EOF
1064 }
1065
1066 check_objcflags(){
1067     log check_objcflags "$@"
1068     test_objcflags "$@" && add_objcflags "$@"
1069 }
1070
1071 test_ldflags(){
1072     log test_ldflags "$@"
1073     check_ld "cc" "$@" <<EOF
1074 int main(void){ return 0; }
1075 EOF
1076 }
1077
1078 check_ldflags(){
1079     log check_ldflags "$@"
1080     test_ldflags "$@" && add_ldflags "$@"
1081 }
1082
1083 test_stripflags(){
1084     log test_stripflags "$@"
1085     # call check_cc to get a fresh TMPO
1086     check_cc <<EOF
1087 int main(void) { return 0; }
1088 EOF
1089     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1090 }
1091
1092 check_stripflags(){
1093     log check_stripflags "$@"
1094     test_stripflags "$@" && add_stripflags "$@"
1095 }
1096
1097 check_header(){
1098     log check_header "$@"
1099     header=$1
1100     shift
1101     disable_safe $header
1102     check_cpp "$@" <<EOF && enable_safe $header
1103 #include <$header>
1104 int x;
1105 EOF
1106 }
1107
1108 check_header_objcc(){
1109     log check_header_objcc "$@"
1110     rm -f -- "$TMPO"
1111     header=$1
1112     shift
1113     disable_safe $header
1114     {
1115        echo "#include <$header>"
1116        echo "int main(void) { return 0; }"
1117     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1118 }
1119
1120 check_func(){
1121     log check_func "$@"
1122     func=$1
1123     shift
1124     disable $func
1125     check_ld "cc" "$@" <<EOF && enable $func
1126 extern int $func();
1127 int main(void){ $func(); }
1128 EOF
1129 }
1130
1131 check_complexfunc(){
1132     log check_complexfunc "$@"
1133     func=$1
1134     narg=$2
1135     shift 2
1136     test $narg = 2 && args="f, g" || args="f * I"
1137     disable $func
1138     check_ld "cc" "$@" <<EOF && enable $func
1139 #include <complex.h>
1140 #include <math.h>
1141 float foo(complex float f, complex float g) { return $func($args); }
1142 int main(void){ return (int) foo; }
1143 EOF
1144 }
1145
1146 check_mathfunc(){
1147     log check_mathfunc "$@"
1148     func=$1
1149     narg=$2
1150     shift 2
1151     test $narg = 2 && args="f, g" || args="f"
1152     disable $func
1153     check_ld "cc" "$@" <<EOF && enable $func
1154 #include <math.h>
1155 float foo(float f, float g) { return $func($args); }
1156 int main(void){ return (int) foo; }
1157 EOF
1158 }
1159
1160 check_func_headers(){
1161     log check_func_headers "$@"
1162     headers=$1
1163     funcs=$2
1164     shift 2
1165     {
1166         for hdr in $headers; do
1167             print_include $hdr
1168         done
1169         echo "#include <stdint.h>"
1170         for func in $funcs; do
1171             echo "long check_$func(void) { return (long) $func; }"
1172         done
1173         echo "int main(void) { int ret = 0;"
1174         # LTO could optimize out the test functions without this
1175         for func in $funcs; do
1176             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1177         done
1178         echo "return ret; }"
1179     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1180 }
1181
1182 check_class_headers_cpp(){
1183     log check_class_headers_cpp "$@"
1184     headers=$1
1185     classes=$2
1186     shift 2
1187     {
1188         for hdr in $headers; do
1189             echo "#include <$hdr>"
1190         done
1191         echo "int main(void) { "
1192         i=1
1193         for class in $classes; do
1194             echo "$class obj$i;"
1195             i=$(expr $i + 1)
1196         done
1197         echo "return 0; }"
1198     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1199 }
1200
1201 check_cpp_condition(){
1202     log check_cpp_condition "$@"
1203     header=$1
1204     condition=$2
1205     shift 2
1206     check_cpp "$@" <<EOF
1207 #include <$header>
1208 #if !($condition)
1209 #error "unsatisfied condition: $condition"
1210 #endif
1211 EOF
1212 }
1213
1214 test_cflags_cc(){
1215     log test_cflags_cc "$@"
1216     flags=$1
1217     header=$2
1218     condition=$3
1219     shift 3
1220     set -- $($cflags_filter "$flags")
1221     check_cc "$@" <<EOF
1222 #include <$header>
1223 #if !($condition)
1224 #error "unsatisfied condition: $condition"
1225 #endif
1226 EOF
1227 }
1228
1229 check_lib(){
1230     log check_lib "$@"
1231     name="$1"
1232     headers="$2"
1233     funcs="$3"
1234     shift 3
1235     disable $name
1236     check_func_headers "$headers" "$funcs" "$@" &&
1237         enable $name && add_extralibs "$@"
1238 }
1239
1240 check_lib_cpp(){
1241     log check_lib_cpp "$@"
1242     headers="$1"
1243     classes="$2"
1244     shift 2
1245     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1246 }
1247
1248 check_pkg_config(){
1249     log check_pkg_config "$@"
1250     pkg_version="$1"
1251     pkg="${1%% *}"
1252     headers="$2"
1253     funcs="$3"
1254     shift 3
1255     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1256     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1257     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1258     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1259         set_safe "${pkg}_cflags"    $pkg_cflags &&
1260         set_safe "${pkg}_extralibs" $pkg_libs
1261 }
1262
1263 check_exec(){
1264     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1265 }
1266
1267 check_exec_crash(){
1268     log check_exec_crash "$@"
1269     code=$(cat)
1270
1271     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1272     # are safe but may not be available everywhere.  Thus we use
1273     # raise(SIGTERM) instead.  The check is run in a subshell so we
1274     # can redirect the "Terminated" message from the shell.  SIGBUS
1275     # is not defined by standard C so it is used conditionally.
1276
1277     (check_exec "$@") >> $logfile 2>&1 <<EOF
1278 #include <signal.h>
1279 static void sighandler(int sig){
1280     raise(SIGTERM);
1281 }
1282 int foo(void){
1283     $code
1284 }
1285 int (*func_ptr)(void) = foo;
1286 int main(void){
1287     signal(SIGILL, sighandler);
1288     signal(SIGFPE, sighandler);
1289     signal(SIGSEGV, sighandler);
1290 #ifdef SIGBUS
1291     signal(SIGBUS, sighandler);
1292 #endif
1293     return func_ptr();
1294 }
1295 EOF
1296 }
1297
1298 check_type(){
1299     log check_type "$@"
1300     headers=$1
1301     type=$2
1302     shift 2
1303     disable_safe "$type"
1304     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1305 }
1306
1307 check_struct(){
1308     log check_struct "$@"
1309     headers=$1
1310     struct=$2
1311     member=$3
1312     shift 3
1313     disable_safe "${struct}_${member}"
1314     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1315         enable_safe "${struct}_${member}"
1316 }
1317
1318 check_builtin(){
1319     log check_builtin "$@"
1320     name=$1
1321     headers=$2
1322     builtin=$3
1323     shift 3
1324     disable "$name"
1325     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1326 }
1327
1328 check_compile_assert(){
1329     log check_compile_assert "$@"
1330     name=$1
1331     headers=$2
1332     condition=$3
1333     shift 3
1334     disable "$name"
1335     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1336 }
1337
1338 require(){
1339     log require "$@"
1340     name_version="$1"
1341     name="${1%% *}"
1342     headers="$2"
1343     func="$3"
1344     shift 3
1345     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1346 }
1347
1348 require_cpp(){
1349     name="$1"
1350     headers="$2"
1351     classes="$3"
1352     shift 3
1353     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1354 }
1355
1356 use_pkg_config(){
1357     log use_pkg_config "$@"
1358     pkg="$1"
1359     check_pkg_config "$@" || return 1
1360     add_cflags    $(get_safe "${pkg}_cflags")
1361     add_extralibs $(get_safe "${pkg}_extralibs")
1362 }
1363
1364 require_pkg_config(){
1365     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1366 }
1367
1368 hostcc_e(){
1369     eval printf '%s\\n' $HOSTCC_E
1370 }
1371
1372 hostcc_o(){
1373     eval printf '%s\\n' $HOSTCC_O
1374 }
1375
1376 check_host_cc(){
1377     log check_host_cc "$@"
1378     cat > $TMPC
1379     log_file $TMPC
1380     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1381 }
1382
1383 check_host_cpp(){
1384     log check_host_cpp "$@"
1385     cat > $TMPC
1386     log_file $TMPC
1387     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1388 }
1389
1390 check_host_cppflags(){
1391     log check_host_cppflags "$@"
1392     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1393 int x;
1394 EOF
1395 }
1396
1397 check_host_cflags(){
1398     log check_host_cflags "$@"
1399     set -- $($host_cflags_filter "$@")
1400     check_host_cc "$@" <<EOF && append host_cflags "$@"
1401 int x;
1402 EOF
1403 }
1404
1405 check_host_cpp_condition(){
1406     log check_host_cpp_condition "$@"
1407     header=$1
1408     condition=$2
1409     shift 2
1410     check_host_cpp "$@" <<EOF
1411 #include <$header>
1412 #if !($condition)
1413 #error "unsatisfied condition: $condition"
1414 #endif
1415 EOF
1416 }
1417
1418 cp_if_changed(){
1419     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1420     mkdir -p "$(dirname $2)"
1421     cp -f "$1" "$2"
1422 }
1423
1424 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1425 # system-dependent things.
1426
1427 AVCODEC_COMPONENTS="
1428     bsfs
1429     decoders
1430     encoders
1431     hwaccels
1432     parsers
1433 "
1434
1435 AVDEVICE_COMPONENTS="
1436     indevs
1437     outdevs
1438 "
1439 AVFILTER_COMPONENTS="
1440     filters
1441 "
1442 AVFORMAT_COMPONENTS="
1443     demuxers
1444     muxers
1445     protocols
1446 "
1447
1448 AVRESAMPLE_COMPONENTS=""
1449 AVUTIL_COMPONENTS=""
1450
1451 COMPONENT_LIST="
1452     $AVCODEC_COMPONENTS
1453     $AVDEVICE_COMPONENTS
1454     $AVFILTER_COMPONENTS
1455     $AVFORMAT_COMPONENTS
1456     $AVRESAMPLE_COMPONENTS
1457     $AVUTIL_COMPONENTS
1458 "
1459
1460 EXAMPLE_LIST="
1461     avio_dir_cmd_example
1462     avio_reading_example
1463     decode_audio_example
1464     decode_video_example
1465     demuxing_decoding_example
1466     encode_audio_example
1467     encode_video_example
1468     extract_mvs_example
1469     filter_audio_example
1470     filtering_audio_example
1471     filtering_video_example
1472     http_multiclient_example
1473     metadata_example
1474     muxing_example
1475     qsvdec_example
1476     remuxing_example
1477     resampling_audio_example
1478     scaling_video_example
1479     transcode_aac_example
1480     transcoding_example
1481 "
1482 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1483     bzlib
1484     iconv
1485     libxcb
1486     libxcb_shm
1487     libxcb_shape
1488     libxcb_xfixes
1489     lzma
1490     schannel
1491     sdl
1492     sdl2
1493     securetransport
1494     xlib
1495     zlib
1496 "
1497
1498 EXTERNAL_LIBRARY_GPL_LIST="
1499     avisynth
1500     frei0r
1501     libcdio
1502     librubberband
1503     libvidstab
1504     libx264
1505     libx265
1506     libxavs
1507     libxvid
1508 "
1509
1510 EXTERNAL_LIBRARY_NONFREE_LIST="
1511     decklink
1512     libfdk_aac
1513     openssl
1514 "
1515
1516 EXTERNAL_LIBRARY_VERSION3_LIST="
1517     gmp
1518     libopencore_amrnb
1519     libopencore_amrwb
1520     libvo_amrwbenc
1521 "
1522
1523 EXTERNAL_LIBRARY_GPLV3_LIST="
1524     libsmbclient
1525 "
1526
1527 EXTERNAL_LIBRARY_LIST="
1528     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1529     $EXTERNAL_LIBRARY_GPL_LIST
1530     $EXTERNAL_LIBRARY_NONFREE_LIST
1531     $EXTERNAL_LIBRARY_VERSION3_LIST
1532     $EXTERNAL_LIBRARY_GPLV3_LIST
1533     chromaprint
1534     crystalhd
1535     gcrypt
1536     gnutls
1537     jni
1538     ladspa
1539     libass
1540     libbluray
1541     libbs2b
1542     libcaca
1543     libcelt
1544     libdc1394
1545     libflite
1546     libfontconfig
1547     libfreetype
1548     libfribidi
1549     libgme
1550     libgsm
1551     libiec61883
1552     libilbc
1553     libkvazaar
1554     libmodplug
1555     libmp3lame
1556     libnut
1557     libopencv
1558     libopenh264
1559     libopenjpeg
1560     libopenmpt
1561     libopus
1562     libpulse
1563     librsvg
1564     librtmp
1565     libschroedinger
1566     libshine
1567     libsmbclient
1568     libsnappy
1569     libsoxr
1570     libspeex
1571     libssh
1572     libtesseract
1573     libtheora
1574     libtwolame
1575     libv4l2
1576     libvorbis
1577     libvpx
1578     libwavpack
1579     libwebp
1580     libzimg
1581     libzmq
1582     libzvbi
1583     mediacodec
1584     netcdf
1585     openal
1586     opencl
1587     opengl
1588     videotoolbox
1589 "
1590 HWACCEL_AUTODETECT_LIBRARY_LIST="
1591     audiotoolbox
1592     cuda
1593     cuvid
1594     d3d11va
1595     dxva2
1596     nvenc
1597     vaapi
1598     vda
1599     vdpau
1600     videotoolbox_hwaccel
1601     xvmc
1602 "
1603
1604 HWACCEL_LIBRARY_NONFREE_LIST="
1605     cuda_sdk
1606     libnpp
1607 "
1608
1609 HWACCEL_LIBRARY_LIST="
1610     $HWACCEL_AUTODETECT_LIBRARY_LIST
1611     $HWACCEL_LIBRARY_NONFREE_LIST
1612     libmfx
1613     mmal
1614     omx
1615 "
1616
1617 DOCUMENT_LIST="
1618     doc
1619     htmlpages
1620     manpages
1621     podpages
1622     txtpages
1623 "
1624
1625 FEATURE_LIST="
1626     ftrapv
1627     gray
1628     hardcoded_tables
1629     omx_rpi
1630     runtime_cpudetect
1631     safe_bitstream_reader
1632     shared
1633     small
1634     static
1635     swscale_alpha
1636 "
1637
1638 LIBRARY_LIST="
1639     avcodec
1640     avdevice
1641     avfilter
1642     avformat
1643     avresample
1644     avutil
1645     postproc
1646     swresample
1647     swscale
1648 "
1649
1650 LICENSE_LIST="
1651     gpl
1652     nonfree
1653     version3
1654 "
1655
1656 PROGRAM_LIST="
1657     ffplay
1658     ffprobe
1659     ffserver
1660     ffmpeg
1661 "
1662
1663 SUBSYSTEM_LIST="
1664     dct
1665     dwt
1666     error_resilience
1667     faan
1668     fast_unaligned
1669     fft
1670     lsp
1671     lzo
1672     mdct
1673     pixelutils
1674     network
1675     rdft
1676 "
1677
1678 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1679 CONFIG_LIST="
1680     $DOCUMENT_LIST
1681     $EXAMPLE_LIST
1682     $EXTERNAL_LIBRARY_LIST
1683     $HWACCEL_LIBRARY_LIST
1684     $FEATURE_LIST
1685     $LICENSE_LIST
1686     $LIBRARY_LIST
1687     $PROGRAM_LIST
1688     $SUBSYSTEM_LIST
1689     fontconfig
1690     memory_poisoning
1691     neon_clobber_test
1692     ossfuzz
1693     pic
1694     thumb
1695     valgrind_backtrace
1696     xmm_clobber_test
1697     $COMPONENT_LIST
1698 "
1699
1700 THREADS_LIST="
1701     pthreads
1702     os2threads
1703     w32threads
1704 "
1705
1706 ATOMICS_LIST="
1707     atomics_gcc
1708     atomics_suncc
1709     atomics_win32
1710 "
1711
1712 AUTODETECT_LIBS="
1713     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1714     $HWACCEL_AUTODETECT_LIBRARY_LIST
1715     $THREADS_LIST
1716 "
1717
1718 ARCH_LIST="
1719     aarch64
1720     alpha
1721     arm
1722     avr32
1723     avr32_ap
1724     avr32_uc
1725     bfin
1726     ia64
1727     m68k
1728     mips
1729     mips64
1730     parisc
1731     ppc
1732     ppc64
1733     s390
1734     sh4
1735     sparc
1736     sparc64
1737     tilegx
1738     tilepro
1739     tomi
1740     x86
1741     x86_32
1742     x86_64
1743 "
1744
1745 ARCH_EXT_LIST_ARM="
1746     armv5te
1747     armv6
1748     armv6t2
1749     armv8
1750     neon
1751     vfp
1752     vfpv3
1753     setend
1754 "
1755
1756 ARCH_EXT_LIST_MIPS="
1757     mipsfpu
1758     mips32r2
1759     mips32r5
1760     mips64r2
1761     mips32r6
1762     mips64r6
1763     mipsdsp
1764     mipsdspr2
1765     msa
1766 "
1767
1768 ARCH_EXT_LIST_LOONGSON="
1769     loongson2
1770     loongson3
1771     mmi
1772 "
1773
1774 ARCH_EXT_LIST_X86_SIMD="
1775     aesni
1776     amd3dnow
1777     amd3dnowext
1778     avx
1779     avx2
1780     fma3
1781     fma4
1782     mmx
1783     mmxext
1784     sse
1785     sse2
1786     sse3
1787     sse4
1788     sse42
1789     ssse3
1790     xop
1791 "
1792
1793 ARCH_EXT_LIST_PPC="
1794     altivec
1795     dcbzl
1796     ldbrx
1797     power8
1798     ppc4xx
1799     vsx
1800 "
1801
1802 ARCH_EXT_LIST_X86="
1803     $ARCH_EXT_LIST_X86_SIMD
1804     cpunop
1805     i686
1806 "
1807
1808 ARCH_EXT_LIST="
1809     $ARCH_EXT_LIST_ARM
1810     $ARCH_EXT_LIST_PPC
1811     $ARCH_EXT_LIST_X86
1812     $ARCH_EXT_LIST_MIPS
1813     $ARCH_EXT_LIST_LOONGSON
1814 "
1815
1816 ARCH_FEATURES="
1817     aligned_stack
1818     fast_64bit
1819     fast_clz
1820     fast_cmov
1821     local_aligned_8
1822     local_aligned_16
1823     local_aligned_32
1824     simd_align_16
1825     simd_align_32
1826 "
1827
1828 BUILTIN_LIST="
1829     atomic_cas_ptr
1830     machine_rw_barrier
1831     MemoryBarrier
1832     mm_empty
1833     rdtsc
1834     sarestart
1835     sem_timedwait
1836     sync_val_compare_and_swap
1837 "
1838 HAVE_LIST_CMDLINE="
1839     inline_asm
1840     symver
1841     yasm
1842 "
1843
1844 HAVE_LIST_PUB="
1845     bigendian
1846     fast_unaligned
1847 "
1848
1849 HEADERS_LIST="
1850     alsa_asoundlib_h
1851     altivec_h
1852     arpa_inet_h
1853     asm_types_h
1854     cdio_paranoia_h
1855     cdio_paranoia_paranoia_h
1856     cuda_h
1857     d3d11_h
1858     dispatch_dispatch_h
1859     dev_bktr_ioctl_bt848_h
1860     dev_bktr_ioctl_meteor_h
1861     dev_ic_bt8xx_h
1862     dev_video_bktr_ioctl_bt848_h
1863     dev_video_meteor_ioctl_meteor_h
1864     direct_h
1865     dirent_h
1866     dlfcn_h
1867     dxva_h
1868     ES2_gl_h
1869     gsm_h
1870     io_h
1871     mach_mach_time_h
1872     machine_ioctl_bt848_h
1873     machine_ioctl_meteor_h
1874     malloc_h
1875     opencv2_core_core_c_h
1876     openjpeg_2_1_openjpeg_h
1877     openjpeg_2_0_openjpeg_h
1878     openjpeg_1_5_openjpeg_h
1879     OpenGL_gl3_h
1880     poll_h
1881     sndio_h
1882     soundcard_h
1883     stdatomic_h
1884     sys_mman_h
1885     sys_param_h
1886     sys_resource_h
1887     sys_select_h
1888     sys_soundcard_h
1889     sys_time_h
1890     sys_un_h
1891     sys_videoio_h
1892     termios_h
1893     udplite_h
1894     unistd_h
1895     valgrind_valgrind_h
1896     windows_h
1897     winsock2_h
1898 "
1899
1900 INTRINSICS_LIST="
1901     intrinsics_neon
1902 "
1903
1904 COMPLEX_FUNCS="
1905     cabs
1906     cexp
1907 "
1908
1909 MATH_FUNCS="
1910     atanf
1911     atan2f
1912     cbrt
1913     cbrtf
1914     copysign
1915     cosf
1916     erf
1917     exp2
1918     exp2f
1919     expf
1920     hypot
1921     isfinite
1922     isinf
1923     isnan
1924     ldexpf
1925     llrint
1926     llrintf
1927     log2
1928     log2f
1929     log10f
1930     lrint
1931     lrintf
1932     powf
1933     rint
1934     round
1935     roundf
1936     sinf
1937     trunc
1938     truncf
1939 "
1940
1941 SYSTEM_FUNCS="
1942     access
1943     aligned_malloc
1944     arc4random
1945     clock_gettime
1946     closesocket
1947     CommandLineToArgvW
1948     CoTaskMemFree
1949     CryptGenRandom
1950     dlopen
1951     fcntl
1952     flt_lim
1953     fork
1954     getaddrinfo
1955     gethrtime
1956     getopt
1957     GetProcessAffinityMask
1958     GetProcessMemoryInfo
1959     GetProcessTimes
1960     getrusage
1961     GetSystemTimeAsFileTime
1962     gettimeofday
1963     glob
1964     glXGetProcAddress
1965     gmtime_r
1966     inet_aton
1967     isatty
1968     jack_port_get_latency_range
1969     kbhit
1970     LoadLibrary
1971     localtime_r
1972     lstat
1973     lzo1x_999_compress
1974     mach_absolute_time
1975     MapViewOfFile
1976     memalign
1977     mkstemp
1978     mmap
1979     mprotect
1980     nanosleep
1981     PeekNamedPipe
1982     posix_memalign
1983     pthread_cancel
1984     sched_getaffinity
1985     SetConsoleTextAttribute
1986     SetConsoleCtrlHandler
1987     setmode
1988     setrlimit
1989     Sleep
1990     strerror_r
1991     sysconf
1992     sysctl
1993     usleep
1994     UTGetOSTypeFromString
1995     VirtualAlloc
1996     wglGetProcAddress
1997 "
1998
1999 TOOLCHAIN_FEATURES="
2000     as_dn_directive
2001     as_fpu_directive
2002     as_func
2003     as_object_arch
2004     asm_mod_q
2005     attribute_may_alias
2006     attribute_packed
2007     blocks_extension
2008     ebp_available
2009     ebx_available
2010     gnu_as
2011     gnu_windres
2012     ibm_asm
2013     inline_asm_direct_symbol_refs
2014     inline_asm_labels
2015     inline_asm_nonlocal_labels
2016     pragma_deprecated
2017     rsync_contimeout
2018     symver_asm_label
2019     symver_gnu_asm
2020     vfp_args
2021     xform_asm
2022     xmm_clobbers
2023 "
2024
2025 TYPES_LIST="
2026     CONDITION_VARIABLE_Ptr
2027     socklen_t
2028     struct_addrinfo
2029     struct_group_source_req
2030     struct_ip_mreq_source
2031     struct_ipv6_mreq
2032     struct_msghdr_msg_flags
2033     struct_pollfd
2034     struct_rusage_ru_maxrss
2035     struct_sctp_event_subscribe
2036     struct_sockaddr_in6
2037     struct_sockaddr_sa_len
2038     struct_sockaddr_storage
2039     struct_stat_st_mtim_tv_nsec
2040     struct_v4l2_frmivalenum_discrete
2041 "
2042
2043 HAVE_LIST="
2044     $ARCH_EXT_LIST
2045     $(add_suffix _external $ARCH_EXT_LIST)
2046     $(add_suffix _inline   $ARCH_EXT_LIST)
2047     $ARCH_FEATURES
2048     $ATOMICS_LIST
2049     $BUILTIN_LIST
2050     $COMPLEX_FUNCS
2051     $HAVE_LIST_CMDLINE
2052     $HAVE_LIST_PUB
2053     $HEADERS_LIST
2054     $INTRINSICS_LIST
2055     $MATH_FUNCS
2056     $SYSTEM_FUNCS
2057     $THREADS_LIST
2058     $TOOLCHAIN_FEATURES
2059     $TYPES_LIST
2060     alsa
2061     atomics_native
2062     dos_paths
2063     dxva2_lib
2064     dxva2api_cobj
2065     jack
2066     libc_msvcrt
2067     makeinfo
2068     makeinfo_html
2069     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2070     perl
2071     pod2man
2072     sdl2
2073     section_data_rel_ro
2074     sndio
2075     texi2html
2076     threads
2077     vaapi_drm
2078     vaapi_x11
2079     vdpau_x11
2080     winrt
2081 "
2082
2083 # options emitted with CONFIG_ prefix but not available on the command line
2084 CONFIG_EXTRA="
2085     aandcttables
2086     ac3dsp
2087     audio_frame_queue
2088     audiodsp
2089     blockdsp
2090     bswapdsp
2091     cabac
2092     dirac_parse
2093     dvprofile
2094     exif
2095     faandct
2096     faanidct
2097     fdctdsp
2098     flacdsp
2099     fmtconvert
2100     frame_thread_encoder
2101     g722dsp
2102     golomb
2103     gplv3
2104     h263dsp
2105     h264chroma
2106     h264dsp
2107     h264parse
2108     h264pred
2109     h264qpel
2110     hevcparse
2111     hpeldsp
2112     huffman
2113     huffyuvdsp
2114     huffyuvencdsp
2115     idctdsp
2116     iirfilter
2117     mdct15
2118     intrax8
2119     iso_media
2120     ividsp
2121     jpegtables
2122     lgplv3
2123     libx262
2124     llauddsp
2125     llviddsp
2126     llvidencdsp
2127     lpc
2128     lzf
2129     me_cmp
2130     mpeg_er
2131     mpegaudio
2132     mpegaudiodsp
2133     mpegaudioheader
2134     mpegvideo
2135     mpegvideoenc
2136     mss34dsp
2137     pixblockdsp
2138     qpeldsp
2139     qsv
2140     qsvdec
2141     qsvenc
2142     rangecoder
2143     riffdec
2144     riffenc
2145     rtpdec
2146     rtpenc_chain
2147     rv34dsp
2148     sinewin
2149     snappy
2150     srtp
2151     startcode
2152     texturedsp
2153     texturedspenc
2154     tpeldsp
2155     vaapi_encode
2156     vc1dsp
2157     videodsp
2158     vp3dsp
2159     vp56dsp
2160     vp8dsp
2161     vt_bt2020
2162     wma_freqs
2163     wmv2dsp
2164 "
2165
2166 CMDLINE_SELECT="
2167     $ARCH_EXT_LIST
2168     $CONFIG_LIST
2169     $HAVE_LIST_CMDLINE
2170     $THREADS_LIST
2171     asm
2172     cross_compile
2173     debug
2174     extra_warnings
2175     logging
2176     lto
2177     optimizations
2178     rpath
2179     stripping
2180 "
2181
2182 PATHS_LIST="
2183     bindir
2184     datadir
2185     docdir
2186     incdir
2187     libdir
2188     mandir
2189     pkgconfigdir
2190     prefix
2191     shlibdir
2192     install_name_dir
2193 "
2194
2195 CMDLINE_SET="
2196     $PATHS_LIST
2197     ar
2198     arch
2199     as
2200     assert_level
2201     build_suffix
2202     cc
2203     objcc
2204     cpu
2205     cross_prefix
2206     custom_allocator
2207     cxx
2208     dep_cc
2209     doxygen
2210     env
2211     extra_version
2212     gas
2213     host_cc
2214     host_cflags
2215     host_extralibs
2216     host_ld
2217     host_ldflags
2218     host_os
2219     ignore_tests
2220     install
2221     ld
2222     ln_s
2223     logfile
2224     malloc_prefix
2225     nm
2226     optflags
2227     nvccflags
2228     pkg_config
2229     pkg_config_flags
2230     progs_suffix
2231     random_seed
2232     ranlib
2233     samples
2234     strip
2235     sws_max_filter_size
2236     sysinclude
2237     sysroot
2238     target_exec
2239     target_os
2240     target_path
2241     target_samples
2242     tempprefix
2243     toolchain
2244     valgrind
2245     yasmexe
2246 "
2247
2248 CMDLINE_APPEND="
2249     extra_cflags
2250     extra_cxxflags
2251     extra_objcflags
2252     host_cppflags
2253 "
2254
2255 # code dependency declarations
2256
2257 # architecture extensions
2258
2259 armv5te_deps="arm"
2260 armv6_deps="arm"
2261 armv6t2_deps="arm"
2262 armv8_deps="aarch64"
2263 neon_deps_any="aarch64 arm"
2264 intrinsics_neon_deps="neon"
2265 vfp_deps_any="aarch64 arm"
2266 vfpv3_deps="vfp"
2267 setend_deps="arm"
2268
2269 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2270
2271 loongson2_deps="mips"
2272 loongson3_deps="mips"
2273 mipsfpu_deps="mips"
2274 mipsdsp_deps="mips"
2275 mipsdspr2_deps="mips"
2276 mips32r2_deps="mips"
2277 mips32r5_deps="mips"
2278 mips32r6_deps="mips"
2279 mips64r2_deps="mips"
2280 mips64r6_deps="mips"
2281 msa_deps="mipsfpu"
2282 mmi_deps="mips"
2283
2284 altivec_deps="ppc"
2285 dcbzl_deps="ppc"
2286 ldbrx_deps="ppc"
2287 ppc4xx_deps="ppc"
2288 vsx_deps="altivec"
2289 power8_deps="vsx"
2290
2291 cpunop_deps="i686"
2292 x86_64_select="i686"
2293 x86_64_suggest="fast_cmov"
2294
2295 amd3dnow_deps="mmx"
2296 amd3dnowext_deps="amd3dnow"
2297 i686_deps="x86"
2298 mmx_deps="x86"
2299 mmxext_deps="mmx"
2300 sse_deps="mmxext"
2301 sse2_deps="sse"
2302 sse3_deps="sse2"
2303 ssse3_deps="sse3"
2304 sse4_deps="ssse3"
2305 sse42_deps="sse4"
2306 aesni_deps="sse42"
2307 avx_deps="sse42"
2308 xop_deps="avx"
2309 fma3_deps="avx"
2310 fma4_deps="avx"
2311 avx2_deps="avx"
2312
2313 mmx_external_deps="yasm"
2314 mmx_inline_deps="inline_asm"
2315 mmx_suggest="mmx_external mmx_inline"
2316
2317 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2318     eval dep=\$${ext}_deps
2319     eval ${ext}_external_deps='"${dep}_external"'
2320     eval ${ext}_inline_deps='"${dep}_inline"'
2321     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2322 done
2323
2324 aligned_stack_if_any="aarch64 ppc x86"
2325 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2326 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2327 fast_unaligned_if_any="aarch64 ppc x86"
2328 simd_align_16_if_any="altivec neon sse"
2329 simd_align_32_if_any="avx"
2330
2331 # system capabilities
2332 symver_if_any="symver_asm_label symver_gnu_asm"
2333 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2334
2335 # threading support
2336 atomics_gcc_if="sync_val_compare_and_swap"
2337 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2338 atomics_win32_if="MemoryBarrier"
2339 atomics_native_if_any="$ATOMICS_LIST"
2340 w32threads_deps="atomics_native"
2341 threads_if_any="$THREADS_LIST"
2342
2343 # subsystems
2344 dct_select="rdft"
2345 dirac_parse_select="golomb"
2346 error_resilience_select="me_cmp"
2347 faandct_deps="faan fdctdsp"
2348 faanidct_deps="faan idctdsp"
2349 h264dsp_select="startcode"
2350 hevcparse_select="golomb"
2351 frame_thread_encoder_deps="encoders threads"
2352 intrax8_select="blockdsp idctdsp"
2353 mdct_select="fft"
2354 mdct15_select="fft"
2355 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2356 mpeg_er_select="error_resilience"
2357 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2358 mpegaudiodsp_select="dct"
2359 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2360 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2361 vc1dsp_select="h264chroma qpeldsp startcode"
2362 rdft_select="fft"
2363
2364 # decoders / encoders
2365 aac_decoder_select="mdct15 mdct sinewin"
2366 aac_fixed_decoder_select="mdct sinewin"
2367 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2368 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2369 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2370 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2371 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2372 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2373 adpcm_g722_decoder_select="g722dsp"
2374 adpcm_g722_encoder_select="g722dsp"
2375 aic_decoder_select="golomb idctdsp"
2376 alac_encoder_select="lpc"
2377 als_decoder_select="bswapdsp"
2378 amrnb_decoder_select="lsp"
2379 amrwb_decoder_select="lsp"
2380 amv_decoder_select="sp5x_decoder exif"
2381 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2382 ape_decoder_select="bswapdsp llauddsp"
2383 apng_decoder_select="zlib"
2384 apng_encoder_select="llvidencdsp zlib"
2385 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2386 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2387 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2388 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2389 atrac1_decoder_select="mdct sinewin"
2390 atrac3_decoder_select="mdct"
2391 atrac3p_decoder_select="mdct sinewin"
2392 avrn_decoder_select="exif jpegtables"
2393 bink_decoder_select="blockdsp hpeldsp"
2394 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2395 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2396 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2397 cllc_decoder_select="bswapdsp"
2398 comfortnoise_encoder_select="lpc"
2399 cook_decoder_select="audiodsp mdct sinewin"
2400 cscd_decoder_select="lzo"
2401 cscd_decoder_suggest="zlib"
2402 dca_decoder_select="mdct"
2403 dds_decoder_select="texturedsp"
2404 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2405 dnxhd_decoder_select="blockdsp idctdsp"
2406 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2407 dvvideo_decoder_select="dvprofile idctdsp"
2408 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2409 dxa_decoder_select="zlib"
2410 dxv_decoder_select="lzf texturedsp"
2411 eac3_decoder_select="ac3_decoder"
2412 eac3_encoder_select="ac3_encoder"
2413 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2414 eatgq_decoder_select="aandcttables"
2415 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2416 exr_decoder_select="zlib"
2417 ffv1_decoder_select="rangecoder"
2418 ffv1_encoder_select="rangecoder"
2419 ffvhuff_decoder_select="huffyuv_decoder"
2420 ffvhuff_encoder_select="huffyuv_encoder"
2421 fic_decoder_select="golomb"
2422 flac_decoder_select="flacdsp"
2423 flac_encoder_select="bswapdsp flacdsp lpc"
2424 flashsv2_decoder_select="zlib"
2425 flashsv2_encoder_select="zlib"
2426 flashsv_decoder_select="zlib"
2427 flashsv_encoder_select="zlib"
2428 flv_decoder_select="h263_decoder"
2429 flv_encoder_select="h263_encoder"
2430 fourxm_decoder_select="blockdsp bswapdsp"
2431 fraps_decoder_select="bswapdsp huffman"
2432 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2433 g729_decoder_select="audiodsp"
2434 h261_decoder_select="mpegvideo"
2435 h261_encoder_select="aandcttables mpegvideoenc"
2436 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2437 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2438 h263i_decoder_select="h263_decoder"
2439 h263p_decoder_select="h263_decoder"
2440 h263p_encoder_select="h263_encoder"
2441 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2442 h264_decoder_suggest="error_resilience"
2443 hap_decoder_select="snappy texturedsp"
2444 hap_encoder_deps="libsnappy"
2445 hap_encoder_select="texturedspenc"
2446 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2447 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2448 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2449 iac_decoder_select="imc_decoder"
2450 imc_decoder_select="bswapdsp fft mdct sinewin"
2451 indeo3_decoder_select="hpeldsp"
2452 indeo4_decoder_select="ividsp"
2453 indeo5_decoder_select="ividsp"
2454 interplay_video_decoder_select="hpeldsp"
2455 jpegls_decoder_select="mjpeg_decoder"
2456 jv_decoder_select="blockdsp"
2457 lagarith_decoder_select="llviddsp"
2458 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2459 magicyuv_decoder_select="llviddsp"
2460 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2461 metasound_decoder_select="lsp mdct sinewin"
2462 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2463 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2464 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2465 mjpegb_decoder_select="mjpeg_decoder"
2466 mlp_decoder_select="mlp_parser"
2467 mlp_encoder_select="lpc"
2468 motionpixels_decoder_select="bswapdsp"
2469 mp1_decoder_select="mpegaudio"
2470 mp1float_decoder_select="mpegaudio"
2471 mp2_decoder_select="mpegaudio"
2472 mp2float_decoder_select="mpegaudio"
2473 mp3_decoder_select="mpegaudio"
2474 mp3adu_decoder_select="mpegaudio"
2475 mp3adufloat_decoder_select="mpegaudio"
2476 mp3float_decoder_select="mpegaudio"
2477 mp3on4_decoder_select="mpegaudio"
2478 mp3on4float_decoder_select="mpegaudio"
2479 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2480 mpc8_decoder_select="mpegaudiodsp"
2481 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2482 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2483 mpegvideo_decoder_select="mpegvideo"
2484 mpeg1video_decoder_select="mpegvideo"
2485 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2486 mpeg2video_decoder_select="mpegvideo"
2487 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2488 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2489 mpeg4_encoder_select="h263_encoder"
2490 msa1_decoder_select="mss34dsp"
2491 mscc_decoder_select="zlib"
2492 msmpeg4v1_decoder_select="h263_decoder"
2493 msmpeg4v2_decoder_select="h263_decoder"
2494 msmpeg4v2_encoder_select="h263_encoder"
2495 msmpeg4v3_decoder_select="h263_decoder"
2496 msmpeg4v3_encoder_select="h263_encoder"
2497 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2498 mts2_decoder_select="mss34dsp"
2499 mxpeg_decoder_select="mjpeg_decoder"
2500 nellymoser_decoder_select="mdct sinewin"
2501 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2502 nuv_decoder_select="idctdsp lzo"
2503 on2avc_decoder_select="mdct"
2504 opus_decoder_deps="swresample"
2505 opus_decoder_select="mdct15"
2506 opus_encoder_select="audio_frame_queue mdct15"
2507 png_decoder_select="zlib"
2508 png_encoder_select="llvidencdsp zlib"
2509 prores_decoder_select="blockdsp idctdsp"
2510 prores_encoder_select="fdctdsp"
2511 qcelp_decoder_select="lsp"
2512 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2513 ra_144_decoder_select="audiodsp"
2514 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2515 ralf_decoder_select="golomb"
2516 rawvideo_decoder_select="bswapdsp"
2517 rscc_decoder_select="zlib"
2518 rtjpeg_decoder_select="me_cmp"
2519 rv10_decoder_select="h263_decoder"
2520 rv10_encoder_select="h263_encoder"
2521 rv20_decoder_select="h263_decoder"
2522 rv20_encoder_select="h263_encoder"
2523 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2524 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2525 screenpresso_decoder_select="zlib"
2526 shorten_decoder_select="bswapdsp"
2527 sipr_decoder_select="lsp"
2528 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2529 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2530 sonic_decoder_select="golomb rangecoder"
2531 sonic_encoder_select="golomb rangecoder"
2532 sonic_ls_encoder_select="golomb rangecoder"
2533 sp5x_decoder_select="mjpeg_decoder"
2534 srgc_decoder_select="zlib"
2535 svq1_decoder_select="hpeldsp"
2536 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2537 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2538 svq3_decoder_suggest="zlib"
2539 tak_decoder_select="audiodsp"
2540 tdsc_decoder_select="zlib mjpeg_decoder"
2541 theora_decoder_select="vp3_decoder"
2542 thp_decoder_select="mjpeg_decoder"
2543 tiff_decoder_suggest="zlib lzma"
2544 tiff_encoder_suggest="zlib"
2545 truehd_decoder_select="mlp_parser"
2546 truehd_encoder_select="lpc"
2547 truemotion2_decoder_select="bswapdsp"
2548 truespeech_decoder_select="bswapdsp"
2549 tscc_decoder_select="zlib"
2550 twinvq_decoder_select="mdct lsp sinewin"
2551 txd_decoder_select="texturedsp"
2552 utvideo_decoder_select="bswapdsp llviddsp"
2553 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2554 vble_decoder_select="llviddsp"
2555 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2556 vc1_qsv_decoder_deps="libmfx"
2557 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2558 vc1image_decoder_select="vc1_decoder"
2559 vorbis_decoder_select="mdct"
2560 vorbis_encoder_select="mdct"
2561 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2562 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2563 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2564 vp6a_decoder_select="vp6_decoder"
2565 vp6f_decoder_select="vp6_decoder"
2566 vp7_decoder_select="h264pred videodsp vp8dsp"
2567 vp8_decoder_select="h264pred videodsp vp8dsp"
2568 vp9_decoder_select="videodsp vp9_parser"
2569 webp_decoder_select="vp8_decoder exif"
2570 wmalossless_decoder_select="llauddsp"
2571 wmapro_decoder_select="mdct sinewin wma_freqs"
2572 wmav1_decoder_select="mdct sinewin wma_freqs"
2573 wmav1_encoder_select="mdct sinewin wma_freqs"
2574 wmav2_decoder_select="mdct sinewin wma_freqs"
2575 wmav2_encoder_select="mdct sinewin wma_freqs"
2576 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2577 wmv1_decoder_select="h263_decoder"
2578 wmv1_encoder_select="h263_encoder"
2579 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2580 wmv2_encoder_select="h263_encoder wmv2dsp"
2581 wmv3_decoder_select="vc1_decoder"
2582 wmv3image_decoder_select="wmv3_decoder"
2583 xma1_decoder_select="wmapro_decoder"
2584 xma2_decoder_select="wmapro_decoder"
2585 zerocodec_decoder_select="zlib"
2586 zlib_decoder_select="zlib"
2587 zlib_encoder_select="zlib"
2588 zmbv_decoder_select="zlib"
2589 zmbv_encoder_select="zlib"
2590
2591 # platform codecs
2592 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2593 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2594
2595 # hardware accelerators
2596 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2597 cuda_deps_any="dlopen LoadLibrary"
2598 cuvid_deps="cuda"
2599 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2600 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2601 dxva2_extralibs="-luser32"
2602 dxva2_lib_deps="dxva2"
2603 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension"
2604 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2605 vda_deps="vda_framework pthreads"
2606 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2607 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2608 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2609 xvmc_deps="X11_extensions_XvMClib_h"
2610
2611 h263_vaapi_hwaccel_deps="vaapi"
2612 h263_vaapi_hwaccel_select="h263_decoder"
2613 h263_videotoolbox_hwaccel_deps="videotoolbox"
2614 h263_videotoolbox_hwaccel_select="h263_decoder"
2615 h264_cuvid_hwaccel_deps="cuda cuvid"
2616 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2617 h264_d3d11va_hwaccel_deps="d3d11va"
2618 h264_d3d11va_hwaccel_select="h264_decoder"
2619 h264_dxva2_hwaccel_deps="dxva2"
2620 h264_dxva2_hwaccel_select="h264_decoder"
2621 h264_mediacodec_hwaccel_deps="mediacodec"
2622 h264_mmal_hwaccel_deps="mmal"
2623 h264_qsv_hwaccel_deps="libmfx"
2624 h264_vaapi_hwaccel_deps="vaapi"
2625 h264_vaapi_hwaccel_select="h264_decoder"
2626 h264_vda_hwaccel_deps="vda"
2627 h264_vda_hwaccel_select="h264_decoder"
2628 h264_vda_old_hwaccel_deps="vda"
2629 h264_vda_old_hwaccel_select="h264_decoder"
2630 h264_vdpau_hwaccel_deps="vdpau"
2631 h264_vdpau_hwaccel_select="h264_decoder"
2632 h264_videotoolbox_hwaccel_deps="videotoolbox"
2633 h264_videotoolbox_hwaccel_select="h264_decoder"
2634 hevc_cuvid_hwaccel_deps="cuda cuvid"
2635 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2636 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2637 hevc_d3d11va_hwaccel_select="hevc_decoder"
2638 hevc_mediacodec_hwaccel_deps="mediacodec"
2639 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2640 hevc_dxva2_hwaccel_select="hevc_decoder"
2641 hevc_qsv_hwaccel_deps="libmfx"
2642 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2643 hevc_vaapi_hwaccel_select="hevc_decoder"
2644 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2645 hevc_vdpau_hwaccel_select="hevc_decoder"
2646 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2647 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2648 mpeg_xvmc_hwaccel_deps="xvmc"
2649 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2650 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2651 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2652 mpeg1_vdpau_hwaccel_deps="vdpau"
2653 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2654 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2655 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2656 mpeg1_xvmc_hwaccel_deps="xvmc"
2657 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2658 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2659 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2660 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2661 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2662 mpeg2_dxva2_hwaccel_deps="dxva2"
2663 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2664 mpeg2_mmal_hwaccel_deps="mmal"
2665 mpeg2_qsv_hwaccel_deps="libmfx"
2666 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2667 mpeg2_vaapi_hwaccel_deps="vaapi"
2668 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2669 mpeg2_vdpau_hwaccel_deps="vdpau"
2670 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2671 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2672 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2673 mpeg2_xvmc_hwaccel_deps="xvmc"
2674 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2675 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2676 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2677 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2678 mpeg4_mmal_hwaccel_deps="mmal"
2679 mpeg4_vaapi_hwaccel_deps="vaapi"
2680 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2681 mpeg4_vdpau_hwaccel_deps="vdpau"
2682 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2683 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2684 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2685 vc1_cuvid_hwaccel_deps="cuda cuvid"
2686 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2687 vc1_d3d11va_hwaccel_deps="d3d11va"
2688 vc1_d3d11va_hwaccel_select="vc1_decoder"
2689 vc1_dxva2_hwaccel_deps="dxva2"
2690 vc1_dxva2_hwaccel_select="vc1_decoder"
2691 vc1_mmal_hwaccel_deps="mmal"
2692 vc1_qsv_hwaccel_deps="libmfx"
2693 vc1_qsv_hwaccel_select="qsvdec_vc1"
2694 vc1_vaapi_hwaccel_deps="vaapi"
2695 vc1_vaapi_hwaccel_select="vc1_decoder"
2696 vc1_vdpau_hwaccel_deps="vdpau"
2697 vc1_vdpau_hwaccel_select="vc1_decoder"
2698 vp8_cuvid_hwaccel_deps="cuda cuvid"
2699 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2700 vp9_cuvid_hwaccel_deps="cuda cuvid"
2701 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2702 vp8_mediacodec_hwaccel_deps="mediacodec"
2703 vp8_qsv_hwaccel_deps="libmfx"
2704 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2705 vp9_d3d11va_hwaccel_select="vp9_decoder"
2706 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2707 vp9_dxva2_hwaccel_select="vp9_decoder"
2708 vp9_mediacodec_hwaccel_deps="mediacodec"
2709 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2710 vp9_vaapi_hwaccel_select="vp9_decoder"
2711 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2712 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2713 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2714 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2715
2716 # hardware-accelerated codecs
2717 omx_deps="dlopen pthreads"
2718 omx_extralibs='$ldl'
2719 omx_rpi_select="omx"
2720 qsvdec_select="qsv"
2721 qsvenc_select="qsv"
2722 vaapi_encode_deps="vaapi"
2723
2724 hwupload_cuda_filter_deps="cuda"
2725 scale_npp_filter_deps="cuda_sdk libnpp"
2726 scale_cuda_filter_deps="cuda_sdk"
2727
2728 nvenc_deps="cuda"
2729 nvenc_deps_any="dlopen LoadLibrary"
2730 nvenc_encoder_deps="nvenc"
2731
2732 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2733 h264_cuvid_decoder_deps="cuda cuvid"
2734 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2735 h264_mediacodec_decoder_deps="mediacodec"
2736 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2737 h264_mmal_decoder_deps="mmal"
2738 h264_nvenc_encoder_deps="nvenc"
2739 h264_omx_encoder_deps="omx"
2740 h264_qsv_decoder_deps="libmfx"
2741 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2742 h264_qsv_encoder_deps="libmfx"
2743 h264_qsv_encoder_select="qsvenc"
2744 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2745 h264_vaapi_encoder_select="vaapi_encode golomb"
2746 h264_vda_decoder_deps="vda"
2747 h264_vda_decoder_select="h264_decoder"
2748 h264_vdpau_decoder_deps="vdpau"
2749 h264_vdpau_decoder_select="h264_decoder"
2750 hevc_cuvid_decoder_deps="cuda cuvid"
2751 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2752 hevc_mediacodec_decoder_deps="mediacodec"
2753 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2754 hevc_nvenc_encoder_deps="nvenc"
2755 hevc_qsv_decoder_deps="libmfx"
2756 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2757 hevc_qsv_encoder_deps="libmfx"
2758 hevc_qsv_encoder_select="hevcparse qsvenc"
2759 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2760 hevc_vaapi_encoder_select="vaapi_encode golomb"
2761 mjpeg_cuvid_decoder_deps="cuda cuvid"
2762 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2763 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2764 mpeg1_cuvid_decoder_deps="cuda cuvid"
2765 mpeg1_vdpau_decoder_deps="vdpau"
2766 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2767 mpeg2_crystalhd_decoder_select="crystalhd"
2768 mpeg2_cuvid_decoder_deps="cuda cuvid"
2769 mpeg2_mmal_decoder_deps="mmal"
2770 mpeg2_qsv_decoder_deps="libmfx"
2771 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2772 mpeg2_qsv_encoder_deps="libmfx"
2773 mpeg2_qsv_encoder_select="qsvenc"
2774 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2775 mpeg2_vaapi_encoder_select="vaapi_encode"
2776 mpeg4_crystalhd_decoder_select="crystalhd"
2777 mpeg4_cuvid_decoder_deps="cuda cuvid"
2778 mpeg4_mediacodec_decoder_deps="mediacodec"
2779 mpeg4_mmal_decoder_deps="mmal"
2780 mpeg4_omx_encoder_deps="omx"
2781 mpeg4_vdpau_decoder_deps="vdpau"
2782 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2783 mpeg_vdpau_decoder_deps="vdpau"
2784 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2785 msmpeg4_crystalhd_decoder_select="crystalhd"
2786 nvenc_h264_encoder_select="h264_nvenc_encoder"
2787 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2788 vc1_crystalhd_decoder_select="crystalhd"
2789 vc1_cuvid_decoder_deps="cuda cuvid"
2790 vc1_mmal_decoder_deps="mmal"
2791 vc1_vdpau_decoder_deps="vdpau"
2792 vc1_vdpau_decoder_select="vc1_decoder"
2793 vp8_cuvid_decoder_deps="cuda cuvid"
2794 vp8_mediacodec_decoder_deps="mediacodec"
2795 vp8_qsv_decoder_deps="libmfx"
2796 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2797 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2798 vp8_vaapi_encoder_select="vaapi_encode"
2799 vp9_cuvid_decoder_deps="cuda cuvid"
2800 vp9_mediacodec_decoder_deps="mediacodec"
2801 wmv3_crystalhd_decoder_select="crystalhd"
2802 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2803
2804 # parsers
2805 h264_parser_select="golomb h264dsp h264parse"
2806 hevc_parser_select="hevcparse"
2807 mpegaudio_parser_select="mpegaudioheader"
2808 mpegvideo_parser_select="mpegvideo"
2809 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2810 vc1_parser_select="vc1dsp"
2811
2812 # bitstream_filters
2813 mjpeg2jpeg_bsf_select="jpegtables"
2814
2815 # external libraries
2816 aac_at_decoder_deps="audiotoolbox"
2817 ac3_at_decoder_deps="audiotoolbox"
2818 ac3_at_decoder_select="ac3_parser"
2819 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2820 alac_at_decoder_deps="audiotoolbox"
2821 amr_nb_at_decoder_deps="audiotoolbox"
2822 avisynth_deps_any="dlopen LoadLibrary"
2823 avisynth_demuxer_deps="avisynth"
2824 avisynth_demuxer_select="riffdec"
2825 eac3_at_decoder_deps="audiotoolbox"
2826 eac3_at_decoder_select="ac3_parser"
2827 gsm_ms_at_decoder_deps="audiotoolbox"
2828 ilbc_at_decoder_deps="audiotoolbox"
2829 mp1_at_decoder_deps="audiotoolbox"
2830 mp2_at_decoder_deps="audiotoolbox"
2831 mp3_at_decoder_deps="audiotoolbox"
2832 mp1_at_decoder_select="mpegaudioheader"
2833 mp2_at_decoder_select="mpegaudioheader"
2834 mp3_at_decoder_select="mpegaudioheader"
2835 pcm_alaw_at_decoder_deps="audiotoolbox"
2836 pcm_mulaw_at_decoder_deps="audiotoolbox"
2837 qdmc_at_decoder_deps="audiotoolbox"
2838 qdm2_at_decoder_deps="audiotoolbox"
2839 aac_at_encoder_deps="audiotoolbox"
2840 aac_at_encoder_select="audio_frame_queue"
2841 alac_at_encoder_deps="audiotoolbox"
2842 alac_at_encoder_select="audio_frame_queue"
2843 ilbc_at_encoder_deps="audiotoolbox"
2844 ilbc_at_encoder_select="audio_frame_queue"
2845 pcm_alaw_at_encoder_deps="audiotoolbox"
2846 pcm_alaw_at_encoder_select="audio_frame_queue"
2847 pcm_mulaw_at_encoder_deps="audiotoolbox"
2848 pcm_mulaw_at_encoder_select="audio_frame_queue"
2849 chromaprint_muxer_deps="chromaprint"
2850 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2851 libcelt_decoder_deps="libcelt"
2852 libfdk_aac_decoder_deps="libfdk_aac"
2853 libfdk_aac_encoder_deps="libfdk_aac"
2854 libfdk_aac_encoder_select="audio_frame_queue"
2855 libgme_demuxer_deps="libgme"
2856 libgsm_decoder_deps="libgsm"
2857 libgsm_encoder_deps="libgsm"
2858 libgsm_ms_decoder_deps="libgsm"
2859 libgsm_ms_encoder_deps="libgsm"
2860 libilbc_decoder_deps="libilbc"
2861 libilbc_encoder_deps="libilbc"
2862 libkvazaar_encoder_deps="libkvazaar"
2863 libmodplug_demuxer_deps="libmodplug"
2864 libmp3lame_encoder_deps="libmp3lame"
2865 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2866 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2867 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2868 libopencore_amrnb_encoder_select="audio_frame_queue"
2869 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2870 libopenh264_decoder_deps="libopenh264"
2871 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2872 libopenh264_encoder_deps="libopenh264"
2873 libopenjpeg_decoder_deps="libopenjpeg"
2874 libopenjpeg_encoder_deps="libopenjpeg"
2875 libopenmpt_demuxer_deps="libopenmpt"
2876 libopus_decoder_deps="libopus"
2877 libopus_encoder_deps="libopus"
2878 libopus_encoder_select="audio_frame_queue"
2879 librsvg_decoder_deps="librsvg"
2880 libschroedinger_decoder_deps="libschroedinger"
2881 libschroedinger_encoder_deps="libschroedinger"
2882 libshine_encoder_deps="libshine"
2883 libshine_encoder_select="audio_frame_queue"
2884 libspeex_decoder_deps="libspeex"
2885 libspeex_encoder_deps="libspeex"
2886 libspeex_encoder_select="audio_frame_queue"
2887 libtheora_encoder_deps="libtheora"
2888 libtwolame_encoder_deps="libtwolame"
2889 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2890 libvorbis_decoder_deps="libvorbis"
2891 libvorbis_encoder_deps="libvorbis"
2892 libvorbis_encoder_select="audio_frame_queue"
2893 libvpx_vp8_decoder_deps="libvpx"
2894 libvpx_vp8_encoder_deps="libvpx"
2895 libvpx_vp9_decoder_deps="libvpx"
2896 libvpx_vp9_encoder_deps="libvpx"
2897 libwavpack_encoder_deps="libwavpack"
2898 libwavpack_encoder_select="audio_frame_queue"
2899 libwebp_encoder_deps="libwebp"
2900 libwebp_anim_encoder_deps="libwebp"
2901 libx262_encoder_deps="libx262"
2902 libx264_encoder_deps="libx264"
2903 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2904 libx264rgb_encoder_select="libx264_encoder"
2905 libx265_encoder_deps="libx265"
2906 libxavs_encoder_deps="libxavs"
2907 libxvid_encoder_deps="libxvid"
2908 libzvbi_teletext_decoder_deps="libzvbi"
2909 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2910 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2911 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2912 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2913 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2914
2915 # demuxers / muxers
2916 ac3_demuxer_select="ac3_parser"
2917 aiff_muxer_select="iso_media"
2918 asf_demuxer_select="riffdec"
2919 asf_o_demuxer_select="riffdec"
2920 asf_muxer_select="riffenc"
2921 asf_stream_muxer_select="asf_muxer"
2922 avi_demuxer_select="iso_media riffdec exif"
2923 avi_muxer_select="riffenc"
2924 caf_demuxer_select="iso_media riffdec"
2925 caf_muxer_select="iso_media"
2926 dash_muxer_select="mp4_muxer"
2927 dirac_demuxer_select="dirac_parser"
2928 dts_demuxer_select="dca_parser"
2929 dtshd_demuxer_select="dca_parser"
2930 dv_demuxer_select="dvprofile"
2931 dv_muxer_select="dvprofile"
2932 dxa_demuxer_select="riffdec"
2933 eac3_demuxer_select="ac3_parser"
2934 f4v_muxer_select="mov_muxer"
2935 fifo_muxer_deps="threads"
2936 flac_demuxer_select="flac_parser"
2937 hds_muxer_select="flv_muxer"
2938 hls_muxer_select="mpegts_muxer"
2939 image2_alias_pix_demuxer_select="image2_demuxer"
2940 image2_brender_pix_demuxer_select="image2_demuxer"
2941 ipod_muxer_select="mov_muxer"
2942 ismv_muxer_select="mov_muxer"
2943 libnut_demuxer_deps="libnut"
2944 libnut_muxer_deps="libnut"
2945 matroska_audio_muxer_select="matroska_muxer"
2946 matroska_demuxer_select="iso_media riffdec"
2947 matroska_demuxer_suggest="bzlib lzo zlib"
2948 matroska_muxer_select="iso_media riffenc"
2949 mmf_muxer_select="riffenc"
2950 mov_demuxer_select="iso_media riffdec"
2951 mov_demuxer_suggest="zlib"
2952 mov_muxer_select="iso_media riffenc rtpenc_chain"
2953 mp3_demuxer_select="mpegaudio_parser"
2954 mp3_muxer_select="mpegaudioheader"
2955 mp4_muxer_select="mov_muxer"
2956 mpegts_demuxer_select="iso_media"
2957 mpegts_muxer_select="adts_muxer latm_muxer"
2958 mpegtsraw_demuxer_select="mpegts_demuxer"
2959 mxf_d10_muxer_select="mxf_muxer"
2960 mxf_opatom_muxer_select="mxf_muxer"
2961 nut_muxer_select="riffenc"
2962 nuv_demuxer_select="riffdec"
2963 oga_muxer_select="ogg_muxer"
2964 ogg_demuxer_select="dirac_parse"
2965 ogv_muxer_select="ogg_muxer"
2966 opus_muxer_select="ogg_muxer"
2967 psp_muxer_select="mov_muxer"
2968 rtp_demuxer_select="sdp_demuxer"
2969 rtp_muxer_select="golomb"
2970 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2971 rtsp_demuxer_select="http_protocol rtpdec"
2972 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2973 sap_demuxer_select="sdp_demuxer"
2974 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2975 sdp_demuxer_select="rtpdec"
2976 smoothstreaming_muxer_select="ismv_muxer"
2977 spdif_muxer_select="aac_parser"
2978 spx_muxer_select="ogg_muxer"
2979 swf_demuxer_suggest="zlib"
2980 tak_demuxer_select="tak_parser"
2981 tg2_muxer_select="mov_muxer"
2982 tgp_muxer_select="mov_muxer"
2983 vobsub_demuxer_select="mpegps_demuxer"
2984 w64_demuxer_select="wav_demuxer"
2985 w64_muxer_select="wav_muxer"
2986 wav_demuxer_select="riffdec"
2987 wav_muxer_select="riffenc"
2988 webm_muxer_select="iso_media riffenc"
2989 webm_dash_manifest_demuxer_select="matroska_demuxer"
2990 wtv_demuxer_select="mpegts_demuxer riffdec"
2991 wtv_muxer_select="mpegts_muxer riffenc"
2992 xmv_demuxer_select="riffdec"
2993 xwma_demuxer_select="riffdec"
2994
2995 # indevs / outdevs
2996 alsa_indev_deps="alsa"
2997 alsa_outdev_deps="alsa"
2998 avfoundation_indev_deps="pthreads"
2999 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
3000 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3001 caca_outdev_deps="libcaca"
3002 decklink_indev_deps="decklink threads"
3003 decklink_indev_extralibs="-lstdc++"
3004 decklink_outdev_deps="decklink threads"
3005 decklink_outdev_extralibs="-lstdc++"
3006 dshow_indev_deps="IBaseFilter"
3007 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3008 dv1394_indev_deps="dv1394"
3009 dv1394_indev_select="dv_demuxer"
3010 fbdev_indev_deps="linux_fb_h"
3011 fbdev_outdev_deps="linux_fb_h"
3012 gdigrab_indev_deps="CreateDIBSection"
3013 gdigrab_indev_extralibs="-lgdi32"
3014 gdigrab_indev_select="bmp_decoder"
3015 iec61883_indev_deps="libiec61883"
3016 jack_indev_deps="jack"
3017 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3018 lavfi_indev_deps="avfilter"
3019 libcdio_indev_deps="libcdio"
3020 libdc1394_indev_deps="libdc1394"
3021 libv4l2_indev_deps="libv4l2"
3022 openal_indev_deps="openal"
3023 opengl_outdev_deps="opengl"
3024 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3025 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3026 pulse_indev_deps="libpulse"
3027 pulse_outdev_deps="libpulse"
3028 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
3029 qtkit_indev_select="qtkit"
3030 sdl2_outdev_deps="sdl2"
3031 sndio_indev_deps="sndio"
3032 sndio_outdev_deps="sndio"
3033 v4l_indev_deps="linux_videodev_h"
3034 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3035 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3036 vfwcap_indev_deps="vfw32 vfwcap_defines"
3037 xcbgrab_indev_deps="libxcb"
3038 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3039 xv_outdev_extralibs="-lXv -lX11 -lXext"
3040
3041 # protocols
3042 async_protocol_deps="threads"
3043 bluray_protocol_deps="libbluray"
3044 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3045 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3046 ffrtmpcrypt_protocol_select="tcp_protocol"
3047 ffrtmphttp_protocol_deps="!librtmp_protocol"
3048 ffrtmphttp_protocol_select="http_protocol"
3049 ftp_protocol_select="tcp_protocol"
3050 gopher_protocol_select="network"
3051 http_protocol_select="tcp_protocol"
3052 httpproxy_protocol_select="tcp_protocol"
3053 https_protocol_select="tls_protocol"
3054 icecast_protocol_select="http_protocol"
3055 librtmp_protocol_deps="librtmp"
3056 librtmpe_protocol_deps="librtmp"
3057 librtmps_protocol_deps="librtmp"
3058 librtmpt_protocol_deps="librtmp"
3059 librtmpte_protocol_deps="librtmp"
3060 libsmbclient_protocol_deps="libsmbclient gplv3"
3061 libssh_protocol_deps="libssh"
3062 mmsh_protocol_select="http_protocol"
3063 mmst_protocol_select="network"
3064 rtmp_protocol_deps="!librtmp_protocol"
3065 rtmp_protocol_select="tcp_protocol"
3066 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3067 rtmps_protocol_deps="!librtmp_protocol"
3068 rtmps_protocol_select="tls_protocol"
3069 rtmpt_protocol_select="ffrtmphttp_protocol"
3070 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3071 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3072 rtp_protocol_select="udp_protocol"
3073 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3074 sctp_protocol_select="network"
3075 srtp_protocol_select="rtp_protocol srtp"
3076 tcp_protocol_select="network"
3077 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3078 tls_gnutls_protocol_select="tcp_protocol"
3079 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3080 tls_openssl_protocol_select="tcp_protocol"
3081 tls_schannel_protocol_deps="schannel"
3082 tls_schannel_protocol_select="tcp_protocol"
3083 tls_securetransport_protocol_deps="securetransport"
3084 tls_securetransport_protocol_select="tcp_protocol"
3085 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3086 udp_protocol_select="network"
3087 udplite_protocol_select="network"
3088 unix_protocol_deps="sys_un_h"
3089 unix_protocol_select="network"
3090
3091 # filters
3092 afftfilt_filter_deps="avcodec"
3093 afftfilt_filter_select="fft"
3094 afir_filter_deps="avcodec"
3095 afir_filter_select="fft"
3096 amovie_filter_deps="avcodec avformat"
3097 aresample_filter_deps="swresample"
3098 ass_filter_deps="libass"
3099 atempo_filter_deps="avcodec"
3100 atempo_filter_select="rdft"
3101 azmq_filter_deps="libzmq"
3102 blackframe_filter_deps="gpl"
3103 boxblur_filter_deps="gpl"
3104 bs2b_filter_deps="libbs2b"
3105 colormatrix_filter_deps="gpl"
3106 cover_rect_filter_deps="avcodec avformat gpl"
3107 cropdetect_filter_deps="gpl"
3108 deinterlace_qsv_filter_deps="libmfx"
3109 deinterlace_vaapi_filter_deps="vaapi"
3110 delogo_filter_deps="gpl"
3111 deshake_filter_select="pixelutils"
3112 drawtext_filter_deps="libfreetype"
3113 elbg_filter_deps="avcodec"
3114 eq_filter_deps="gpl"
3115 fftfilt_filter_deps="avcodec"
3116 fftfilt_filter_select="rdft"
3117 find_rect_filter_deps="avcodec avformat gpl"
3118 firequalizer_filter_deps="avcodec"
3119 firequalizer_filter_select="rdft"
3120 flite_filter_deps="libflite"
3121 framerate_filter_select="pixelutils"
3122 frei0r_filter_deps="frei0r dlopen"
3123 frei0r_src_filter_deps="frei0r dlopen"
3124 fspp_filter_deps="gpl"
3125 geq_filter_deps="gpl"
3126 histeq_filter_deps="gpl"
3127 hqdn3d_filter_deps="gpl"
3128 interlace_filter_deps="gpl"
3129 kerndeint_filter_deps="gpl"
3130 ladspa_filter_deps="ladspa dlopen"
3131 mcdeint_filter_deps="avcodec gpl"
3132 movie_filter_deps="avcodec avformat"
3133 mpdecimate_filter_deps="gpl"
3134 mpdecimate_filter_select="pixelutils"
3135 mptestsrc_filter_deps="gpl"
3136 negate_filter_deps="lut_filter"
3137 nnedi_filter_deps="gpl"
3138 ocr_filter_deps="libtesseract"
3139 ocv_filter_deps="libopencv"
3140 owdenoise_filter_deps="gpl"
3141 pan_filter_deps="swresample"
3142 perspective_filter_deps="gpl"
3143 phase_filter_deps="gpl"
3144 pp7_filter_deps="gpl"
3145 pp_filter_deps="gpl postproc"
3146 pullup_filter_deps="gpl"
3147 removelogo_filter_deps="avcodec avformat swscale"
3148 repeatfields_filter_deps="gpl"
3149 resample_filter_deps="avresample"
3150 rubberband_filter_deps="librubberband"
3151 sab_filter_deps="gpl swscale"
3152 scale2ref_filter_deps="swscale"
3153 scale_filter_deps="swscale"
3154 scale_qsv_filter_deps="libmfx"
3155 select_filter_select="pixelutils"
3156 showcqt_filter_deps="avcodec avformat swscale"
3157 showcqt_filter_select="fft"
3158 showfreqs_filter_deps="avcodec"
3159 showfreqs_filter_select="fft"
3160 showspectrum_filter_deps="avcodec"
3161 showspectrum_filter_select="fft"
3162 showspectrumpic_filter_deps="avcodec"
3163 showspectrumpic_filter_select="fft"
3164 signature_filter_deps="gpl avcodec avformat"
3165 smartblur_filter_deps="gpl swscale"
3166 sofalizer_filter_deps="netcdf avcodec"
3167 sofalizer_filter_select="fft"
3168 spectrumsynth_filter_deps="avcodec"
3169 spectrumsynth_filter_select="fft"
3170 spp_filter_deps="gpl avcodec"
3171 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3172 stereo3d_filter_deps="gpl"
3173 subtitles_filter_deps="avformat avcodec libass"
3174 super2xsai_filter_deps="gpl"
3175 pixfmts_super2xsai_test_deps="super2xsai_filter"
3176 tinterlace_filter_deps="gpl"
3177 tinterlace_merge_test_deps="tinterlace_filter"
3178 tinterlace_pad_test_deps="tinterlace_filter"
3179 uspp_filter_deps="gpl avcodec"
3180 vaguedenoiser_filter_deps="gpl"
3181 vidstabdetect_filter_deps="libvidstab"
3182 vidstabtransform_filter_deps="libvidstab"
3183 zmq_filter_deps="libzmq"
3184 zoompan_filter_deps="swscale"
3185 zscale_filter_deps="libzimg"
3186 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3187
3188 # examples
3189 avio_dir_cmd_deps="avformat avutil"
3190 avio_reading_deps="avformat avcodec avutil"
3191 decode_audio_example_deps="avcodec avutil"
3192 decode_video_example_deps="avcodec avutil"
3193 demuxing_decoding_example_deps="avcodec avformat avutil"
3194 encode_audio_example_deps="avcodec avutil"
3195 encode_video_example_deps="avcodec avutil"
3196 extract_mvs_example_deps="avcodec avformat avutil"
3197 filter_audio_example_deps="avfilter avutil"
3198 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3199 filtering_video_example_deps="avfilter avcodec avformat avutil"
3200 http_multiclient_example_deps="avformat avutil fork"
3201 metadata_example_deps="avformat avutil"
3202 muxing_example_deps="avcodec avformat avutil swscale"
3203 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3204 remuxing_example_deps="avcodec avformat avutil"
3205 resampling_audio_example_deps="avutil swresample"
3206 scaling_video_example_deps="avutil swscale"
3207 transcode_aac_example_deps="avcodec avformat swresample"
3208 transcoding_example_deps="avfilter avcodec avformat avutil"
3209
3210 # libraries, in linking order
3211 avcodec_deps="avutil"
3212 avcodec_select="null_bsf"
3213 avdevice_deps="avformat avcodec avutil"
3214 avfilter_deps="avutil"
3215 avformat_deps="avcodec avutil"
3216 avresample_deps="avutil"
3217 postproc_deps="avutil gpl"
3218 swresample_deps="avutil"
3219 swscale_deps="avutil"
3220
3221 # programs
3222 ffmpeg_deps="avcodec avfilter avformat swresample"
3223 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3224                null_filter
3225                trim_filter"
3226 ffplay_deps="avcodec avformat swscale swresample sdl2"
3227 ffplay_extralibs='$sdl2_extralibs'
3228 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3229 ffprobe_deps="avcodec avformat"
3230 ffserver_deps="avformat fork sarestart"
3231 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3232
3233 # documentation
3234 podpages_deps="perl"
3235 manpages_deps="perl pod2man"
3236 htmlpages_deps="perl"
3237 htmlpages_deps_any="makeinfo_html texi2html"
3238 txtpages_deps="perl makeinfo"
3239 doc_deps_any="manpages htmlpages podpages txtpages"
3240
3241 # default parameters
3242
3243 logfile="ffbuild/config.log"
3244
3245 # installation paths
3246 prefix_default="/usr/local"
3247 bindir_default='${prefix}/bin'
3248 datadir_default='${prefix}/share/ffmpeg'
3249 docdir_default='${prefix}/share/doc/ffmpeg'
3250 incdir_default='${prefix}/include'
3251 libdir_default='${prefix}/lib'
3252 mandir_default='${prefix}/share/man'
3253
3254 # toolchain
3255 ar_default="ar"
3256 cc_default="gcc"
3257 cxx_default="g++"
3258 host_cc_default="gcc"
3259 doxygen_default="doxygen"
3260 install="install"
3261 ln_s_default="ln -s -f"
3262 nm_default="nm -g"
3263 objformat="elf"
3264 pkg_config_default=pkg-config
3265 ranlib_default="ranlib"
3266 strip_default="strip"
3267 version_script='--version-script'
3268 yasmexe_default="yasm"
3269 windres_default="windres"
3270 nvcc_default="nvcc"
3271 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3272
3273 # OS
3274 target_os_default=$(tolower $(uname -s))
3275 host_os=$target_os_default
3276
3277 # machine
3278 if test "$target_os_default" = aix; then
3279     arch_default=$(uname -p)
3280     strip_default="strip -X32_64"
3281 else
3282     arch_default=$(uname -m)
3283 fi
3284 cpu="generic"
3285 intrinsics="none"
3286
3287 # configurable options
3288 enable $PROGRAM_LIST
3289 enable $DOCUMENT_LIST
3290 enable $EXAMPLE_LIST
3291 enable $(filter_out avresample $LIBRARY_LIST)
3292 enable stripping
3293
3294 enable asm
3295 enable debug
3296 enable doc
3297 enable faan faandct faanidct
3298 enable optimizations
3299 enable runtime_cpudetect
3300 enable safe_bitstream_reader
3301 enable static
3302 enable swscale_alpha
3303 enable valgrind_backtrace
3304
3305 sws_max_filter_size_default=256
3306 set_default sws_max_filter_size
3307
3308 # build settings
3309 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3310 LIBPREF="lib"
3311 LIBSUF=".a"
3312 FULLNAME='$(NAME)$(BUILDSUF)'
3313 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3314 SLIBPREF="lib"
3315 SLIBSUF=".so"
3316 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3317 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3318 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3319 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3320 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3321 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3322 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3323
3324 asflags_filter=echo
3325 cflags_filter=echo
3326 ldflags_filter=echo
3327
3328 AS_C='-c'
3329 AS_O='-o $@'
3330 CC_C='-c'
3331 CC_E='-E -o $@'
3332 CC_O='-o $@'
3333 CXX_C='-c'
3334 CXX_O='-o $@'
3335 OBJCC_C='-c'
3336 OBJCC_E='-E -o $@'
3337 OBJCC_O='-o $@'
3338 LD_O='-o $@'
3339 LD_LIB='-l%'
3340 LD_PATH='-L'
3341 HOSTCC_C='-c'
3342 HOSTCC_E='-E -o $@'
3343 HOSTCC_O='-o $@'
3344 HOSTLD_O='-o $@'
3345 NVCC_C='-c'
3346 NVCC_O='-o $@'
3347
3348 host_extralibs='-lm'
3349 host_cflags_filter=echo
3350 host_ldflags_filter=echo
3351
3352 target_path='$(CURDIR)'
3353
3354 # since the object filename is not given with the -MM flag, the compiler
3355 # is only able to print the basename, and we must add the path ourselves
3356 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3357 DEPFLAGS='-MM'
3358
3359 # find source path
3360 if test -f configure; then
3361     source_path=.
3362 else
3363     source_path=$(cd $(dirname "$0"); pwd)
3364     case "$source_path" in
3365         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3366     esac
3367     test -e "$source_path/config.h" &&
3368         die "Out of tree builds are impossible with config.h in source dir."
3369 fi
3370
3371 for v in "$@"; do
3372     r=${v#*=}
3373     l=${v%"$r"}
3374     r=$(sh_quote "$r")
3375     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3376 done
3377
3378 find_things(){
3379     thing=$1
3380     pattern=$2
3381     file=$source_path/$3
3382     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3383 }
3384
3385 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3386 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3387 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3388 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3389 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3390 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3391 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3392 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3393 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3394
3395 find_things_extern(){
3396     thing=$1
3397     pattern=$2
3398     file=$source_path/$3
3399     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3400 }
3401
3402 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3403 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3404
3405 ALL_COMPONENTS="
3406     $BSF_LIST
3407     $DECODER_LIST
3408     $DEMUXER_LIST
3409     $ENCODER_LIST
3410     $FILTER_LIST
3411     $HWACCEL_LIST
3412     $INDEV_LIST
3413     $MUXER_LIST
3414     $OUTDEV_LIST
3415     $PARSER_LIST
3416     $PROTOCOL_LIST
3417 "
3418
3419 for n in $COMPONENT_LIST; do
3420     v=$(toupper ${n%s})_LIST
3421     eval enable \$$v
3422     eval ${n}_if_any="\$$v"
3423 done
3424
3425 enable $ARCH_EXT_LIST
3426
3427 die_unknown(){
3428     echo "Unknown option \"$1\"."
3429     echo "See $0 --help for available options."
3430     exit 1
3431 }
3432
3433 print_in_columns() {
3434     cols=$(expr $ncols / 24)
3435     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3436 }
3437
3438 show_list() {
3439     suffix=_$1
3440     shift
3441     echo $* | sed s/$suffix//g | print_in_columns
3442     exit 0
3443 }
3444
3445 rand_list(){
3446     IFS=', '
3447     set -- $*
3448     unset IFS
3449     for thing; do
3450         comp=${thing%:*}
3451         prob=${thing#$comp}
3452         prob=${prob#:}
3453         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3454         echo "prob ${prob:-0.5}"
3455         printf '%s\n' $comp
3456     done
3457 }
3458
3459 do_random(){
3460     action=$1
3461     shift
3462     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3463     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3464 }
3465
3466 for opt do
3467     optval="${opt#*=}"
3468     case "$opt" in
3469         --extra-ldflags=*)
3470             add_ldflags $optval
3471         ;;
3472         --extra-ldexeflags=*)
3473             add_ldexeflags $optval
3474         ;;
3475         --extra-ldlibflags=*)
3476             add_ldlibflags $optval
3477         ;;
3478         --extra-libs=*)
3479             add_extralibs $optval
3480         ;;
3481         --disable-devices)
3482             disable $INDEV_LIST $OUTDEV_LIST
3483         ;;
3484         --enable-debug=*)
3485             debuglevel="$optval"
3486         ;;
3487         --disable-programs)
3488             disable $PROGRAM_LIST
3489         ;;
3490         --disable-everything)
3491             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3492         ;;
3493         --disable-all)
3494             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3495             disable $LIBRARY_LIST $PROGRAM_LIST doc
3496             enable avutil
3497         ;;
3498         --enable-random|--disable-random)
3499             action=${opt%%-random}
3500             do_random ${action#--} $COMPONENT_LIST
3501         ;;
3502         --enable-random=*|--disable-random=*)
3503             action=${opt%%-random=*}
3504             do_random ${action#--} $optval
3505         ;;
3506         --enable-*=*|--disable-*=*)
3507             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3508             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3509             eval list=\$$(toupper $thing)_LIST
3510             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3511             list=$(filter "$name" $list)
3512             [ "$list" = "" ] && warn "Option $opt did not match anything"
3513             $action $list
3514         ;;
3515         --enable-?*|--disable-?*)
3516             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3517             if is_in $option $COMPONENT_LIST; then
3518                 test $action = disable && action=unset
3519                 eval $action \$$(toupper ${option%s})_LIST
3520             elif is_in $option $CMDLINE_SELECT; then
3521                 $action $option
3522             else
3523                 die_unknown $opt
3524             fi
3525         ;;
3526         --list-*)
3527             NAME="${opt#--list-}"
3528             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3529             NAME=${NAME%s}
3530             eval show_list $NAME \$$(toupper $NAME)_LIST
3531         ;;
3532         --help|-h) show_help
3533         ;;
3534         --quiet|-q) quiet=yes
3535         ;;
3536         --fatal-warnings) enable fatal_warnings
3537         ;;
3538         --libfuzzer=*)
3539             libfuzzer_path="$optval"
3540         ;;
3541         *)
3542             optname="${opt%%=*}"
3543             optname="${optname#--}"
3544             optname=$(echo "$optname" | sed 's/-/_/g')
3545             if is_in $optname $CMDLINE_SET; then
3546                 eval $optname='$optval'
3547             elif is_in $optname $CMDLINE_APPEND; then
3548                 append $optname "$optval"
3549             else
3550                 die_unknown $opt
3551             fi
3552         ;;
3553     esac
3554 done
3555
3556 for e in $env; do
3557     eval "export $e"
3558 done
3559
3560 # Mark specifically enabled, but normally autodetected libraries as requested.
3561 for lib in $AUTODETECT_LIBS; do
3562     enabled $lib && request $lib
3563 done
3564
3565 # Enable platform codecs by default.
3566 enable_weak audiotoolbox
3567
3568 # Enable hwaccels by default.
3569 enable_weak d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3570 enable_weak xlib
3571
3572 enable_weak cuda cuvid nvenc vda_framework videotoolbox videotoolbox_encoder
3573
3574 disabled logging && logfile=/dev/null
3575
3576 die_license_disabled() {
3577     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3578 }
3579
3580 die_license_disabled_gpl() {
3581     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3582 }
3583
3584 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3585 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3586
3587 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3588 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3589
3590 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3591
3592 # Disable all the library-specific components if the library itself
3593 # is disabled, see AVCODEC_LIST and following _LIST variables.
3594
3595 disable_components(){
3596     disabled ${1} && disable $(
3597         eval components="\$$(toupper ${1})_COMPONENTS"
3598         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3599     )
3600 }
3601
3602 map 'disable_components $v' $LIBRARY_LIST
3603
3604 mkdir -p ffbuild
3605 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3606 set >> $logfile
3607
3608 test -n "$valgrind" && toolchain="valgrind-memcheck"
3609
3610 enabled ossfuzz && {
3611     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3612     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3613 }
3614
3615 case "$toolchain" in
3616     *-asan)
3617         cc_default="${toolchain%-asan}"
3618         add_cflags  -fsanitize=address
3619         add_ldflags -fsanitize=address
3620     ;;
3621     *-msan)
3622         cc_default="${toolchain%-msan}"
3623         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3624         add_ldflags -fsanitize=memory
3625     ;;
3626     *-tsan)
3627         cc_default="${toolchain%-tsan}"
3628         add_cflags  -fsanitize=thread -fPIE
3629         add_ldflags -fsanitize=thread -pie
3630         case "$toolchain" in
3631             gcc-tsan)
3632                 add_cflags  -fPIC
3633                 add_ldflags -fPIC
3634                 ;;
3635         esac
3636     ;;
3637     *-usan)
3638         cc_default="${toolchain%-usan}"
3639         add_cflags  -fsanitize=undefined
3640         add_ldflags -fsanitize=undefined
3641     ;;
3642     valgrind-*)
3643         target_exec_default="valgrind"
3644         case "$toolchain" in
3645             valgrind-massif)
3646                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3647                 ;;
3648             valgrind-memcheck)
3649                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3650                 ;;
3651         esac
3652     ;;
3653     msvc)
3654         # Check whether the current MSVC version needs the C99 converter.
3655         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3656         # support enough of C99 to build ffmpeg. Default to the new
3657         # behaviour if the regexp was unable to match anything, since this
3658         # successfully parses the version number of existing supported
3659         # versions that require the converter (MSVC 2010 and 2012).
3660         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3661         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3662             cc_default="cl"
3663             cxx_default="cl"
3664         else
3665             cc_default="c99wrap cl"
3666             cxx_default="c99wrap cl"
3667         fi
3668         ld_default="$source_path/compat/windows/mslink"
3669         nm_default="dumpbin -symbols"
3670         ar_default="lib"
3671         case "$arch" in
3672         arm*)
3673             as_default="armasm"
3674             ;;
3675         esac
3676         target_os_default="win32"
3677         # Use a relative path for TMPDIR. This makes sure all the
3678         # ffconf temp files are written with a relative path, avoiding
3679         # issues with msys/win32 path conversion for MSVC parameters
3680         # such as -Fo<file> or -out:<file>.
3681         TMPDIR=.
3682     ;;
3683     icl)
3684         cc_default="icl"
3685         ld_default="xilink"
3686         nm_default="dumpbin -symbols"
3687         ar_default="xilib"
3688         target_os_default="win32"
3689         TMPDIR=.
3690     ;;
3691     gcov)
3692         add_cflags  -fprofile-arcs -ftest-coverage
3693         add_ldflags -fprofile-arcs -ftest-coverage
3694     ;;
3695     llvm-cov)
3696         add_cflags -fprofile-arcs -ftest-coverage
3697         add_ldflags --coverage
3698     ;;
3699     hardened)
3700         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3701         add_cflags   -fno-strict-overflow -fstack-protector-all
3702         add_ldflags  -Wl,-z,relro -Wl,-z,now
3703         add_cflags   -fPIE
3704         add_ldexeflags -fPIE -pie
3705     ;;
3706     ?*)
3707         die "Unknown toolchain $toolchain"
3708     ;;
3709 esac
3710
3711 test -n "$cross_prefix" && enable cross_compile
3712
3713 if enabled cross_compile; then
3714     test -n "$arch" && test -n "$target_os" ||
3715         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3716 fi
3717
3718 ar_default="${cross_prefix}${ar_default}"
3719 cc_default="${cross_prefix}${cc_default}"
3720 cxx_default="${cross_prefix}${cxx_default}"
3721 nm_default="${cross_prefix}${nm_default}"
3722 pkg_config_default="${cross_prefix}${pkg_config_default}"
3723 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3724     ranlib_default="${cross_prefix}${ranlib_default} -D"
3725 else
3726     ranlib_default="${cross_prefix}${ranlib_default}"
3727 fi
3728 strip_default="${cross_prefix}${strip_default}"
3729 windres_default="${cross_prefix}${windres_default}"
3730
3731 sysinclude_default="${sysroot}/usr/include"
3732
3733 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3734     target_exec target_os yasmexe nvcc
3735 enabled cross_compile || host_cc_default=$cc
3736 set_default host_cc
3737
3738 pkg_config_fail_message=""
3739 if ! $pkg_config --version >/dev/null 2>&1; then
3740     warn "$pkg_config not found, library detection may fail."
3741     pkg_config=false
3742 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3743     pkg_config_fail_message="
3744 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3745 fi
3746
3747 if test $doxygen != $doxygen_default && \
3748   ! $doxygen --version >/dev/null 2>&1; then
3749     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3750 fi
3751
3752 exesuf() {
3753     case $1 in
3754         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3755     esac
3756 }
3757
3758 EXESUF=$(exesuf $target_os)
3759 HOSTEXESUF=$(exesuf $host_os)
3760
3761 # set temporary file name
3762 : ${TMPDIR:=$TEMPDIR}
3763 : ${TMPDIR:=$TMP}
3764 : ${TMPDIR:=/tmp}
3765
3766 if [ -n "$tempprefix" ] ; then
3767     mktemp(){
3768         echo $tempprefix.${HOSTNAME}.${UID}
3769     }
3770 elif ! check_cmd mktemp -u XXXXXX; then
3771     # simple replacement for missing mktemp
3772     # NOT SAFE FOR GENERAL USE
3773     mktemp(){
3774         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3775     }
3776 fi
3777
3778 tmpfile(){
3779     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3780         (set -C; exec > $tmp) 2>/dev/null ||
3781         die "Unable to create temporary file in $TMPDIR."
3782     append TMPFILES $tmp
3783     eval $1=$tmp
3784 }
3785
3786 trap 'rm -f -- $TMPFILES' EXIT
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 elif enabled parisc; then
5398
5399     if enabled gcc; then
5400         case $($cc -dumpversion) in
5401             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5402         esac
5403     fi
5404
5405 elif enabled ppc; then
5406
5407     enable local_aligned_8 local_aligned_16 local_aligned_32
5408
5409     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5410     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5411     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5412     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5413
5414     # AltiVec flags: The FSF version of GCC differs from the Apple version
5415     if enabled altivec; then
5416         check_cflags -maltivec -mabi=altivec &&
5417         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5418         check_cflags -faltivec
5419
5420         # check if our compiler supports Motorola AltiVec C API
5421         check_cc <<EOF || disable altivec
5422 $inc_altivec_h
5423 int main(void) {
5424     vector signed int v1 = (vector signed int) { 0 };
5425     vector signed int v2 = (vector signed int) { 1 };
5426     v1 = vec_add(v1, v2);
5427     return 0;
5428 }
5429 EOF
5430
5431         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5432     fi
5433
5434     if enabled vsx; then
5435         check_cflags -mvsx &&
5436         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5437     fi
5438
5439     if enabled power8; then
5440         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5441     fi
5442
5443 elif enabled x86; then
5444
5445     check_builtin rdtsc    intrin.h   "__rdtsc()"
5446     check_builtin mm_empty mmintrin.h "_mm_empty()"
5447
5448     enable local_aligned_8 local_aligned_16 local_aligned_32
5449
5450     # check whether EBP is available on x86
5451     # As 'i' is stored on the stack, this program will crash
5452     # if the base pointer is used to access it because the
5453     # base pointer is cleared in the inline assembly code.
5454     check_exec_crash <<EOF && enable ebp_available
5455 volatile int i=0;
5456 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5457 return i;
5458 EOF
5459
5460     # check whether EBX is available on x86
5461     check_inline_asm ebx_available '""::"b"(0)' &&
5462         check_inline_asm ebx_available '"":::"%ebx"'
5463
5464     # check whether xmm clobbers are supported
5465     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5466
5467     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5468         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5469
5470     # check whether binutils is new enough to compile SSSE3/MMXEXT
5471     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5472     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5473
5474     if ! disabled_any asm mmx yasm; then
5475         if check_cmd $yasmexe --version; then
5476             enabled x86_64 && yasm_extra="-m amd64"
5477             yasm_debug="-g dwarf2"
5478         elif check_cmd nasm -v; then
5479             yasmexe=nasm
5480             yasm_debug="-g -F dwarf"
5481             if enabled x86_64; then
5482                 case "$objformat" in
5483                     elf)   objformat=elf64 ;;
5484                     win32) objformat=win64 ;;
5485                 esac
5486             fi
5487         fi
5488
5489         YASMFLAGS="-f $objformat $yasm_extra"
5490         enabled pic               && append YASMFLAGS "-DPIC"
5491         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5492         case "$objformat" in
5493             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5494         esac
5495
5496         check_yasm "movbe ecx, [5]" && enable yasm ||
5497             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5498         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5499         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5500         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5501         check_yasm "CPU amdnop" || disable cpunop
5502     fi
5503
5504     case "$cpu" in
5505         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5506             disable fast_clz
5507         ;;
5508     esac
5509
5510 fi
5511
5512 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5513
5514 check_ldflags -Wl,--as-needed
5515 check_ldflags -Wl,-z,noexecstack
5516
5517 if check_func dlopen && check_func dlsym; then
5518     ldl=
5519 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5520     ldl=-ldl
5521 fi
5522
5523 avisynth_demuxer_extralibs='$ldl'
5524 cuda_extralibs='$ldl'
5525 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5526 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5527 frei0r_filter_extralibs='$ldl'
5528 frei0r_src_filter_extralibs='$ldl'
5529 ladspa_filter_extralibs='$ldl'
5530 nvenc_extralibs='$ldl'
5531 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5532 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5533
5534 if ! disabled network; then
5535     check_func getaddrinfo $network_extralibs
5536     check_func inet_aton $network_extralibs
5537
5538     check_type netdb.h "struct addrinfo"
5539     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5540     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5541     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5542     check_type poll.h "struct pollfd"
5543     check_type netinet/sctp.h "struct sctp_event_subscribe"
5544     check_struct "sys/socket.h" "struct msghdr" msg_flags
5545     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5546     check_type netinet/in.h "struct sockaddr_in6"
5547     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5548     check_type "sys/types.h sys/socket.h" socklen_t
5549
5550     # Prefer arpa/inet.h over winsock2
5551     if check_header arpa/inet.h ; then
5552         check_func closesocket
5553     elif check_header winsock2.h ; then
5554         check_func_headers winsock2.h closesocket -lws2 &&
5555             network_extralibs="-lws2" ||
5556         { check_func_headers winsock2.h closesocket -lws2_32 &&
5557             network_extralibs="-lws2_32"; } || disable winsock2_h network
5558         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5559
5560         check_type ws2tcpip.h socklen_t
5561         check_type ws2tcpip.h "struct addrinfo"
5562         check_type ws2tcpip.h "struct group_source_req"
5563         check_type ws2tcpip.h "struct ip_mreq_source"
5564         check_type ws2tcpip.h "struct ipv6_mreq"
5565         check_type winsock2.h "struct pollfd"
5566         check_struct winsock2.h "struct sockaddr" sa_len
5567         check_type ws2tcpip.h "struct sockaddr_in6"
5568         check_type ws2tcpip.h "struct sockaddr_storage"
5569     else
5570         disable network
5571     fi
5572 fi
5573
5574 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5575 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5576 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5577 check_builtin sarestart signal.h "SA_RESTART"
5578 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5579 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5580 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5581 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5582 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5583
5584 case "$custom_allocator" in
5585     jemalloc)
5586         # jemalloc by default does not use a prefix
5587         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5588     ;;
5589     tcmalloc)
5590         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5591         malloc_prefix=tc_
5592     ;;
5593 esac
5594
5595 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5596 check_func  ${malloc_prefix}memalign            && enable memalign
5597 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5598
5599 check_func  access
5600 check_func_headers stdlib.h arc4random
5601 check_func_headers time.h clock_gettime ||
5602     { check_lib clock_gettime time.h clock_gettime -lrt && LIBRT="-lrt"; }
5603 check_func  fcntl
5604 check_func  fork
5605 check_func  gethrtime
5606 check_func  getopt
5607 check_func  getrusage
5608 check_func  gettimeofday
5609 check_func  isatty
5610 check_func  mach_absolute_time
5611 check_func  mkstemp
5612 check_func  mmap
5613 check_func  mprotect
5614 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5615 check_func_headers time.h nanosleep ||
5616     { check_lib nanosleep time.h nanosleep -lrt && LIBRT="-lrt"; }
5617 check_func  sched_getaffinity
5618 check_func  setrlimit
5619 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5620 check_func  strerror_r
5621 check_func  sysconf
5622 check_func  sysctl
5623 check_func  usleep
5624
5625 check_func_headers conio.h kbhit
5626 check_func_headers io.h setmode
5627 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5628 check_func_headers stdlib.h getenv
5629 check_func_headers sys/stat.h lstat
5630
5631 check_func_headers windows.h GetProcessAffinityMask
5632 check_func_headers windows.h GetProcessTimes
5633 check_func_headers windows.h GetSystemTimeAsFileTime
5634 check_func_headers windows.h LoadLibrary
5635 check_func_headers windows.h MapViewOfFile
5636 check_func_headers windows.h PeekNamedPipe
5637 check_func_headers windows.h SetConsoleTextAttribute
5638 check_func_headers windows.h SetConsoleCtrlHandler
5639 check_func_headers windows.h Sleep
5640 check_func_headers windows.h VirtualAlloc
5641 check_struct windows.h "CONDITION_VARIABLE" Ptr
5642 check_func_headers glob.h glob
5643 enabled xlib &&
5644     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5645
5646 check_header AudioToolbox/AudioToolbox.h
5647 check_header d3d11.h
5648 check_header direct.h
5649 check_header dirent.h
5650 check_header dlfcn.h
5651 check_header dxva.h
5652 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5653 check_header io.h
5654 check_header libcrystalhd/libcrystalhd_if.h
5655 check_header mach/mach_time.h
5656 check_header malloc.h
5657 check_header net/udplite.h
5658 check_header poll.h
5659 check_header sys/mman.h
5660 check_header sys/param.h
5661 check_header sys/resource.h
5662 check_header sys/select.h
5663 check_header sys/time.h
5664 check_header sys/un.h
5665 check_header termios.h
5666 check_header unistd.h
5667 check_header valgrind/valgrind.h
5668 check_header VideoDecodeAcceleration/VDADecoder.h
5669 check_header VideoToolbox/VideoToolbox.h
5670 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5671 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5672 check_header windows.h
5673 check_header X11/extensions/XvMClib.h
5674 check_header asm/types.h
5675
5676 # it seems there are versions of clang in some distros that try to use the
5677 # gcc headers, which explodes for stdatomic
5678 # so we also check that atomics actually work here
5679 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5680
5681 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5682 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5683 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5684
5685 check_lib coreservices "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5686
5687 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5688
5689 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5690 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5691 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5692 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5693 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5694
5695 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5696 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5697 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5698 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5699 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5700 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5701 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5702 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5703
5704 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5705
5706 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5707
5708 if ! disabled w32threads && ! enabled pthreads; then
5709     check_func_headers "windows.h process.h" _beginthreadex &&
5710         enable w32threads || disable w32threads
5711     if ! enabled w32threads && enabled winrt; then
5712         check_func_headers "windows.h" CreateThread &&
5713             enable w32threads || disable w32threads
5714     fi
5715 fi
5716
5717 # check for some common methods of building with pthread support
5718 # do this before the optional library checks as some of them require pthreads
5719 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5720     if check_lib pthreads pthread.h pthread_join   -pthread &&
5721        check_lib pthreads pthread.h pthread_create -pthread; then
5722         add_cflags -pthread
5723     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5724          check_lib pthreads pthread.h pthread_create -pthreads; then
5725         add_cflags -pthreads
5726     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5727          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5728         add_cflags -ldl -pthread
5729     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5730          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5731         :
5732     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5733          check_lib pthreads pthread.h pthread_create -lpthread; then
5734         :
5735     elif check_func pthread_join && check_func pthread_create; then
5736         enable pthreads
5737     fi
5738     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5739 fi
5740
5741
5742 if enabled pthreads; then
5743   check_func pthread_cancel
5744 fi
5745
5746 enabled pthreads &&
5747     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5748
5749 disabled  zlib || check_lib zlib   zlib.h      zlibVersion    -lz
5750 disabled bzlib || check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5751 disabled  lzma || check_lib lzma   lzma.h lzma_version_number -llzma
5752
5753 check_lib libm math.h sin -lm && LIBM="-lm"
5754 disabled crystalhd || check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
5755
5756 atan2f_args=2
5757 copysign_args=2
5758 hypot_args=2
5759 ldexpf_args=2
5760 powf_args=2
5761
5762 for func in $MATH_FUNCS; do
5763     eval check_mathfunc $func \${${func}_args:-1} $LIBM
5764 done
5765
5766 for func in $COMPLEX_FUNCS; do
5767     eval check_complexfunc $func \${${func}_args:-1}
5768 done
5769
5770 # these are off by default, so fail if requested and not available
5771 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5772 enabled avfoundation_indev && { check_lib avfoundation_indev CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5773                                 check_lib avfoundation_indev ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5774 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5775 enabled cuvid             && { enabled cuda ||
5776                                die "ERROR: CUVID requires CUDA"; }
5777 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5778 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5779 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5780 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5781                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5782 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5783 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5784 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5785 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5786 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5787 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5788 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5789 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5790 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5791 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5792                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5793                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5794 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5795 enabled libdc1394         && require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new
5796 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5797                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5798                                  warn "using libfdk without pkg-config"; } }
5799 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"
5800 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5801 enabled fontconfig        && enable libfontconfig
5802 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5803 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5804 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5805 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5806 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5807                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5808                                done || die "ERROR: libgsm not found"; }
5809 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5810 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5811 # While it may appear that require is being used as a pkg-config
5812 # fallback for libmfx, it is actually being used to detect a different
5813 # installation route altogether.  If libmfx is installed via the Intel
5814 # Media SDK or Intel Media Server Studio, these don't come with
5815 # pkg-config support.  Instead, users should make sure that the build
5816 # can find the libraries and headers through other means.
5817 enabled libmfx            && { use_pkg_config libmfx "mfx/mfxvideo.h" MFXInit ||
5818                                { require libmfx "mfx/mfxvideo.h" MFXInit -llibmfx && warn "using libmfx without pkg-config"; } }
5819 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5820 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5821 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5822 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5823 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5824 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5825 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5826                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5827                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5828                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5829 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5830 enabled libopenjpeg       && { { check_lib libopenjpeg openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5831                                check_lib libopenjpeg openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5832                                { check_lib libopenjpeg openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5833                                { check_lib libopenjpeg openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5834                                { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5835                                die "ERROR: libopenjpeg not found"; }
5836 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5837 enabled libopus           && {
5838     enabled libopus_decoder && {
5839         require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5840     }
5841     enabled libopus_encoder && {
5842         require_pkg_config opus opus_multistream.h opus_multistream_surround_encoder_create
5843     }
5844 }
5845 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5846 enabled librsvg           && require_pkg_config librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
5847 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5848 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5849 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5850 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5851 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5852                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5853 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
5854 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5855 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5856 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5857 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5858 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5859 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5860                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5861                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5862 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5863 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5864 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5865 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5866
5867 enabled libvpx            && {
5868     enabled libvpx_vp8_decoder && {
5869         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5870             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5871                 die "ERROR: libvpx decoder version must be >=0.9.1";
5872     }
5873     enabled libvpx_vp8_encoder && {
5874         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5875             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5876                 die "ERROR: libvpx encoder version must be >=0.9.7";
5877     }
5878     enabled libvpx_vp9_decoder && {
5879         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5880             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx
5881     }
5882     enabled libvpx_vp9_encoder && {
5883         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5884             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx
5885     }
5886     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5887         die "libvpx enabled but no supported decoders found"
5888     fi
5889 }
5890
5891 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5892 enabled libwebp           && {
5893     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5894     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5895 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5896                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
5897                                  warn "using libx264 without pkg-config"; } } &&
5898                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5899                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5900                              { check_cpp_condition x264.h "X264_MPEG2" &&
5901                                enable libx262; }
5902 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5903                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5904                                die "ERROR: libx265 version must be >= 68."; }
5905 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
5906 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5907 enabled libzimg           && require_pkg_config "zimg >= 2.3.0" zimg.h zimg_get_api_version
5908 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5909 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5910                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5911                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5912 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5913 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5914                                { ! enabled cross_compile &&
5915                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
5916                                  add_ldflags -L/opt/vc/lib/ &&
5917                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
5918                                die "ERROR: mmal not found" &&
5919                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
5920 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5921 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5922                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
5923                                die "ERROR: openal not found"; } &&
5924                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5925                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5926 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5927                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5928                                die "ERROR: opencl not found"; } &&
5929                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5930                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5931                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5932 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
5933                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5934                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5935                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5936                                die "ERROR: opengl not found."
5937                              }
5938 enabled omx_rpi           && { check_header OMX_Core.h ||
5939                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
5940                                die "ERROR: OpenMAX IL headers not found"; }
5941 enabled omx               && { check_header OMX_Core.h || die "ERROR: OpenMAX IL headers not found"; }
5942 enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
5943                                use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5944                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5945                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5946                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5947                                die "ERROR: openssl not found"; }
5948 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5949
5950 if enabled gcrypt; then
5951     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5952     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5953         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5954         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
5955         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
5956             die "ERROR: gcrypt not found"
5957         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_extralibs
5958     else
5959         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5960     fi
5961 fi
5962
5963 disabled sdl && disable sdl2
5964 if ! disabled sdl2; then
5965     SDL2_CONFIG="${cross_prefix}sdl2-config"
5966     if check_pkg_config sdl2 SDL_events.h SDL_PollEvent; then
5967         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5968         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5969         check_func SDL_Init $sdl2_extralibs $sdl2_cflags && enable sdl2
5970     else
5971       if "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
5972         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
5973         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
5974         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5975         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5976         check_func SDL_Init $sdl2_extralibs $sdl2_cflags && enable sdl2
5977       fi
5978     fi
5979     if test $target_os = "mingw32"; then
5980         sdl2_extralibs="$sdl2_extralibs -mconsole"
5981     fi
5982 fi
5983 enabled sdl2 && enable sdl && add_cflags $sdl2_cflags && add_extralibs $sdl2_extralibs
5984
5985 if enabled decklink; then
5986     case $target_os in
5987         mingw32*|mingw64*|win32|win64)
5988             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
5989             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
5990             ;;
5991     esac
5992 fi
5993
5994 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5995     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security"; }
5996
5997 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
5998                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
5999
6000 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6001 enabled makeinfo \
6002     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6003     && enable makeinfo_html || disable makeinfo_html
6004 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6005 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6006 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6007 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6008
6009 check_header linux/fb.h
6010 check_header linux/videodev.h
6011 check_header linux/videodev2.h
6012 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
6013
6014 check_header sys/videoio.h
6015 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
6016
6017 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6018 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6019 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6020 # w32api 3.12 had it defined wrong
6021 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6022
6023 check_type "dshow.h" IBaseFilter
6024
6025 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6026 { check_header dev/bktr/ioctl_meteor.h &&
6027   check_header dev/bktr/ioctl_bt848.h; } ||
6028 { check_header machine/ioctl_meteor.h &&
6029   check_header machine/ioctl_bt848.h; } ||
6030 { check_header dev/video/meteor/ioctl_meteor.h &&
6031   check_header dev/video/bktr/ioctl_bt848.h; } ||
6032 check_header dev/ic/bt8xx.h
6033
6034 if check_struct sys/soundcard.h audio_buf_info bytes; then
6035     enable_safe sys/soundcard.h
6036 else
6037     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
6038     #include <sys/soundcard.h>
6039     audio_buf_info abc;
6040 EOF
6041 fi
6042 check_header soundcard.h
6043
6044 enabled_any alsa_indev alsa_outdev &&
6045     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6046
6047 enabled jack_indev && check_lib jack jack/jack.h jack_client_open -ljack &&
6048     check_func jack_port_get_latency_range -ljack
6049
6050 enabled_any sndio_indev sndio_outdev && check_lib sndio sndio.h sio_open -lsndio
6051
6052 if enabled libcdio; then
6053     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6054     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6055     die "ERROR: No usable libcdio/cdparanoia found"
6056 fi
6057
6058 if ! disabled libxcb; then
6059     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
6060         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
6061     } && enable libxcb
6062
6063 if enabled libxcb; then
6064     disabled libxcb_shm || {
6065         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
6066             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
6067         } && check_header sys/shm.h && enable libxcb_shm; }
6068
6069     disabled libxcb_xfixes || {
6070         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
6071             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
6072         } && enable libxcb_xfixes; }
6073
6074     disabled libxcb_shape || {
6075         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
6076             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
6077         } && enable libxcb_shape; }
6078
6079     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
6080     add_extralibs $xcb_extralibs $xcb_shm_extralibs $xcb_xfixes_extralibs $xcb_shape_extralibs
6081 fi
6082 fi
6083
6084 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6085
6086 enabled dxva2api_h &&
6087     check_cc <<EOF && enable dxva2api_cobj
6088 #define _WIN32_WINNT 0x0600
6089 #define COBJMACROS
6090 #include <windows.h>
6091 #include <d3d9.h>
6092 #include <dxva2api.h>
6093 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
6094 EOF
6095
6096 enabled dxva2 &&
6097     check_lib dxva2_lib windows.h CoTaskMemFree -lole32
6098
6099 enabled vaapi &&
6100     check_lib vaapi va/va.h vaInitialize -lva
6101
6102 enabled vaapi &&
6103     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6104     disable vaapi
6105
6106 enabled vaapi &&
6107     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6108
6109 enabled vaapi &&
6110     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6111
6112 enabled vdpau &&
6113     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6114     disable vdpau
6115
6116 enabled vdpau &&
6117     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6118
6119 if enabled x86; then
6120     case $target_os in
6121         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6122             ;;
6123         *)
6124             disable cuda cuvid nvenc
6125             ;;
6126     esac
6127 else
6128     disable cuda cuvid nvenc
6129 fi
6130
6131 enabled nvenc &&
6132     check_cc -I$source_path <<EOF || disable nvenc
6133 #include "compat/nvenc/nvEncodeAPI.h"
6134 NV_ENCODE_API_FUNCTION_LIST flist;
6135 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6136 int main(void) { return 0; }
6137 EOF
6138
6139 # Funny iconv installations are not unusual, so check it after all flags have been set
6140 disabled iconv || check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6141
6142 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6143
6144 # add some useful compiler flags if supported
6145 check_cflags -Wdeclaration-after-statement
6146 check_cflags -Wall
6147 check_cflags -Wdisabled-optimization
6148 check_cflags -Wpointer-arith
6149 check_cflags -Wredundant-decls
6150 check_cflags -Wwrite-strings
6151 check_cflags -Wtype-limits
6152 check_cflags -Wundef
6153 check_cflags -Wmissing-prototypes
6154 check_cflags -Wno-pointer-to-int-cast
6155 check_cflags -Wstrict-prototypes
6156 check_cflags -Wempty-body
6157
6158 if enabled extra_warnings; then
6159     check_cflags -Wcast-qual
6160     check_cflags -Wextra
6161     check_cflags -Wpedantic
6162 fi
6163
6164 check_disable_warning(){
6165     warning_flag=-W${1#-Wno-}
6166     test_cflags $warning_flag && add_cflags $1
6167 }
6168
6169 check_disable_warning -Wno-parentheses
6170 check_disable_warning -Wno-switch
6171 check_disable_warning -Wno-format-zero-length
6172 check_disable_warning -Wno-pointer-sign
6173 check_disable_warning -Wno-unused-const-variable
6174
6175 check_disable_warning_headers(){
6176     warning_flag=-W${1#-Wno-}
6177     test_cflags $warning_flag && add_cflags_headers $1
6178 }
6179
6180 check_disable_warning_headers -Wno-deprecated-declarations
6181 check_disable_warning_headers -Wno-unused-variable
6182
6183 check_cc <<EOF && enable blocks_extension
6184 void (^block)(void);
6185 EOF
6186
6187 # add some linker flags
6188 check_ldflags -Wl,--warn-common
6189 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6190 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6191 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6192 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6193
6194 # add some strip flags
6195 # -wN '..@*' is more selective than -x, but not available everywhere.
6196 check_stripflags -wN \'..@*\' || check_stripflags -x
6197
6198 enabled neon_clobber_test &&
6199     check_ldflags -Wl,--wrap,avcodec_open2              \
6200                   -Wl,--wrap,avcodec_decode_audio4      \
6201                   -Wl,--wrap,avcodec_decode_video2      \
6202                   -Wl,--wrap,avcodec_decode_subtitle2   \
6203                   -Wl,--wrap,avcodec_encode_audio2      \
6204                   -Wl,--wrap,avcodec_encode_video2      \
6205                   -Wl,--wrap,avcodec_encode_subtitle    \
6206                   -Wl,--wrap,avcodec_send_packet        \
6207                   -Wl,--wrap,avcodec_receive_packet     \
6208                   -Wl,--wrap,avcodec_send_frame         \
6209                   -Wl,--wrap,avcodec_receive_frame      \
6210                   -Wl,--wrap,swr_convert                \
6211                   -Wl,--wrap,avresample_convert ||
6212     disable neon_clobber_test
6213
6214 enabled xmm_clobber_test &&
6215     check_ldflags -Wl,--wrap,avcodec_open2              \
6216                   -Wl,--wrap,avcodec_decode_audio4      \
6217                   -Wl,--wrap,avcodec_decode_video2      \
6218                   -Wl,--wrap,avcodec_decode_subtitle2   \
6219                   -Wl,--wrap,avcodec_encode_audio2      \
6220                   -Wl,--wrap,avcodec_encode_video2      \
6221                   -Wl,--wrap,avcodec_encode_subtitle    \
6222                   -Wl,--wrap,avcodec_send_packet        \
6223                   -Wl,--wrap,avcodec_receive_packet     \
6224                   -Wl,--wrap,avcodec_send_frame         \
6225                   -Wl,--wrap,avcodec_receive_frame      \
6226                   -Wl,--wrap,swr_convert                \
6227                   -Wl,--wrap,avresample_convert         \
6228                   -Wl,--wrap,sws_scale ||
6229     disable xmm_clobber_test
6230
6231 check_ld "cc" <<EOF && enable proper_dce
6232 extern const int array[512];
6233 static inline int func(void) { return array[0]; }
6234 int main(void) { return 0; }
6235 EOF
6236
6237 if enabled proper_dce; then
6238     echo "X { local: *; };" > $TMPV
6239     if test_ldflags -Wl,${version_script},$TMPV; then
6240         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6241         check_cc <<EOF && enable symver_asm_label
6242 void ff_foo(void) __asm__ ("av_foo@VERSION");
6243 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6244 EOF
6245         check_cc <<EOF && enable symver_gnu_asm
6246 __asm__(".symver ff_foo,av_foo@VERSION");
6247 void ff_foo(void) {}
6248 EOF
6249     fi
6250 fi
6251
6252 if [ -z "$optflags" ]; then
6253     if enabled small; then
6254         optflags=$cflags_size
6255     elif enabled optimizations; then
6256         optflags=$cflags_speed
6257     else
6258         optflags=$cflags_noopt
6259     fi
6260 fi
6261
6262 if [ -z "$nvccflags" ]; then
6263     nvccflags=$nvccflags_default
6264 fi
6265
6266 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6267     nvccflags="$nvccflags -m64"
6268 else
6269     nvccflags="$nvccflags -m32"
6270 fi
6271
6272 check_optflags(){
6273     check_cflags "$@"
6274     enabled lto && check_ldflags "$@"
6275 }
6276
6277 check_optflags $optflags
6278 check_optflags -fno-math-errno
6279 check_optflags -fno-signed-zeros
6280
6281 if enabled lto; then
6282     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6283     check_cflags  -flto
6284     check_ldflags -flto $cpuflags
6285     disable inline_asm_direct_symbol_refs
6286 fi
6287
6288 enabled ftrapv && check_cflags -ftrapv
6289
6290 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6291 int x;
6292 EOF
6293
6294
6295 if enabled icc; then
6296     # Just warnings, no remarks
6297     check_cflags -w1
6298     # -wd: Disable following warnings
6299     # 144, 167, 556: -Wno-pointer-sign
6300     # 188: enumerated type mixed with another type
6301     # 1292: attribute "foo" ignored
6302     # 1419: external declaration in primary source file
6303     # 10006: ignoring unknown option -fno-signed-zeros
6304     # 10148: ignoring unknown option -Wno-parentheses
6305     # 10156: ignoring option '-W'; no argument required
6306     # 13200: No EMMS instruction before call to function
6307     # 13203: No EMMS instruction before return from function
6308     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6309     # 11030: Warning unknown option --as-needed
6310     # 10156: ignoring option '-export'; no argument required
6311     check_ldflags -wd10156,11030
6312     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6313     enable ebp_available
6314     # The test above does not test linking
6315     enabled lto && disable symver_asm_label
6316     if enabled x86_32; then
6317         icc_version=$($cc -dumpversion)
6318         test ${icc_version%%.*} -ge 11 &&
6319             check_cflags -falign-stack=maintain-16-byte ||
6320             disable aligned_stack
6321     fi
6322 elif enabled ccc; then
6323     # disable some annoying warnings
6324     add_cflags -msg_disable bitnotint
6325     add_cflags -msg_disable mixfuncvoid
6326     add_cflags -msg_disable nonstandcast
6327     add_cflags -msg_disable unsupieee
6328 elif enabled gcc; then
6329     check_optflags -fno-tree-vectorize
6330     check_cflags -Werror=format-security
6331     check_cflags -Werror=implicit-function-declaration
6332     check_cflags -Werror=missing-prototypes
6333     check_cflags -Werror=return-type
6334     check_cflags -Werror=vla
6335     check_cflags -Wformat
6336     check_cflags -fdiagnostics-color=auto
6337     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6338 elif enabled llvm_gcc; then
6339     check_cflags -mllvm -stack-alignment=16
6340 elif enabled clang; then
6341     check_cflags -mllvm -stack-alignment=16
6342     check_cflags -mstack-alignment=16
6343     check_cflags -Qunused-arguments
6344     check_cflags -Werror=implicit-function-declaration
6345     check_cflags -Werror=missing-prototypes
6346     check_cflags -Werror=return-type
6347 elif enabled cparser; then
6348     add_cflags -Wno-missing-variable-declarations
6349     add_cflags -Wno-empty-statement
6350 elif enabled armcc; then
6351     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6352     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6353     # 2523: use of inline assembly is deprecated
6354     add_cflags -W${armcc_opt},--diag_suppress=2523
6355     add_cflags -W${armcc_opt},--diag_suppress=1207
6356     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6357     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6358     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6359     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6360 elif enabled tms470; then
6361     add_cflags -pds=824 -pds=837
6362     disable inline_asm
6363 elif enabled pathscale; then
6364     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6365 elif enabled_any msvc icl; then
6366     enabled x86_32 && disable aligned_stack
6367     enabled_all x86_32 debug && add_cflags -Oy-
6368     enabled debug && add_ldflags -debug
6369     enable pragma_deprecated
6370     if enabled icl; then
6371         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6372         # (correctly) on icl 13.x.
6373         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6374             add_cflags -Qansi-alias
6375         # Some inline asm is not compilable in debug
6376         if enabled debug; then
6377             disable ebp_available
6378             disable ebx_available
6379         fi
6380     fi
6381     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6382     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6383     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6384     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6385     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6386     # MSVC 2013 and newer can handle it fine.
6387     # If this declspec fails, force including stdlib.h before the restrict redefinition
6388     # happens in config.h.
6389     if [ $_restrict != restrict ]; then
6390         check_cc <<EOF || add_cflags -FIstdlib.h
6391 __declspec($_restrict) void* foo(int);
6392 EOF
6393     fi
6394     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6395     # Issue has been fixed in MSVC v19.00.24218.
6396     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6397         check_cflags -d2SSAOptimizer-
6398     # enable utf-8 source processing on VS2015 U2 and newer
6399     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6400         add_cflags -utf-8
6401 fi
6402
6403 for pfx in "" host_; do
6404     varname=${pfx%_}cc_type
6405     eval "type=\$$varname"
6406     if [ "$type" = "msvc" ]; then
6407         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6408 static inline int foo(int a) { return a; }
6409 EOF
6410     fi
6411 done
6412
6413 case $as_type in
6414     clang)
6415         add_asflags -Qunused-arguments
6416     ;;
6417 esac
6418
6419 case $ld_type in
6420     clang)
6421         check_ldflags -Qunused-arguments
6422     ;;
6423 esac
6424
6425 case $target_os in
6426     osf1)
6427         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6428     ;;
6429 esac
6430
6431 enable frame_thread_encoder
6432
6433 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6434
6435 check_deps $CONFIG_LIST       \
6436            $CONFIG_EXTRA      \
6437            $HAVE_LIST         \
6438            $ALL_COMPONENTS    \
6439
6440 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"
6441
6442
6443 if test $target_os = "haiku"; then
6444     disable memalign
6445     disable posix_memalign
6446 fi
6447
6448 # add_dep lib dep
6449 # -> enable ${lib}_deps_${dep}
6450 # -> add $dep to ${lib}_deps only once
6451 add_dep() {
6452     lib=$1
6453     dep=$2
6454     enabled "${lib}_deps_${dep}" && return 0
6455     enable  "${lib}_deps_${dep}"
6456     prepend "${lib}_deps" $dep
6457 }
6458
6459 # merge deps lib components
6460 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6461 merge_deps() {
6462     lib=$1
6463     shift
6464     for comp in $*; do
6465         enabled $comp || continue
6466         eval "dep=\"\$${comp}_deps\""
6467         for d in $dep; do
6468             add_dep $lib $d
6469         done
6470     done
6471 }
6472
6473 merge_deps libavfilter $FILTER_LIST
6474
6475 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6476
6477 for thread in $THREADS_LIST; do
6478     if enabled $thread; then
6479         test -n "$thread_type" &&
6480             die "ERROR: Only one thread type must be selected." ||
6481             thread_type="$thread"
6482     fi
6483 done
6484
6485 if disabled stdatomic_h; then
6486     if enabled atomics_gcc; then
6487         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6488     elif enabled atomics_win32; then
6489         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6490     elif enabled atomics_suncc; then
6491         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6492     elif enabled pthreads; then
6493         add_compat atomics/pthread/stdatomic.o
6494         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6495     else
6496         enabled threads && die "Threading is enabled, but no atomics are available"
6497         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6498     fi
6499 fi
6500
6501 # Check if requested libraries were found.
6502 for lib in $AUTODETECT_LIBS; do
6503     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6504 done
6505
6506 enabled zlib && add_cppflags -DZLIB_CONST
6507
6508 # conditional library dependencies, in linking order
6509 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6510 enabled afir_filter         && prepend avfilter_deps "avcodec"
6511 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6512 enabled aresample_filter    && prepend avfilter_deps "swresample"
6513 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6514 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6515 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6516 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6517 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6518 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6519 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6520 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6521 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6522 enabled pan_filter          && prepend avfilter_deps "swresample"
6523 enabled pp_filter           && prepend avfilter_deps "postproc"
6524 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6525 enabled resample_filter && prepend avfilter_deps "avresample"
6526 enabled sab_filter          && prepend avfilter_deps "swscale"
6527 enabled scale_filter    && prepend avfilter_deps "swscale"
6528 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6529 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6530 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6531 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6532 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6533 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6534 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6535 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6536 enabled spp_filter          && prepend avfilter_deps "avcodec"
6537 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6538 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6539 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6540
6541 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6542
6543 enabled opus_decoder    && prepend avcodec_deps "swresample"
6544
6545 expand_deps(){
6546     lib_deps=${1}_deps
6547     eval "deps=\$$lib_deps"
6548     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6549     unique $lib_deps
6550 }
6551
6552 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6553 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6554
6555 map 'expand_deps $v' $LIBRARY_LIST
6556
6557 license="LGPL version 2.1 or later"
6558 if enabled nonfree; then
6559     license="nonfree and unredistributable"
6560 elif enabled gplv3; then
6561     license="GPL version 3 or later"
6562 elif enabled lgplv3; then
6563     license="LGPL version 3 or later"
6564 elif enabled gpl; then
6565     license="GPL version 2 or later"
6566 fi
6567
6568 if test "$quiet" != "yes"; then
6569
6570 echo "install prefix            $prefix"
6571 echo "source path               $source_path"
6572 echo "C compiler                $cc"
6573 echo "C library                 $libc_type"
6574 if test "$host_cc" != "$cc"; then
6575     echo "host C compiler           $host_cc"
6576     echo "host C library            $host_libc_type"
6577 fi
6578 echo "ARCH                      $arch ($cpu)"
6579 if test "$build_suffix" != ""; then
6580     echo "build suffix              $build_suffix"
6581 fi
6582 if test "$progs_suffix" != ""; then
6583     echo "progs suffix              $progs_suffix"
6584 fi
6585 if test "$extra_version" != ""; then
6586     echo "version string suffix     $extra_version"
6587 fi
6588 echo "big-endian                ${bigendian-no}"
6589 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6590 if enabled x86; then
6591     echo "${yasmexe}                      ${yasm-no}"
6592     echo "MMX enabled               ${mmx-no}"
6593     echo "MMXEXT enabled            ${mmxext-no}"
6594     echo "3DNow! enabled            ${amd3dnow-no}"
6595     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6596     echo "SSE enabled               ${sse-no}"
6597     echo "SSSE3 enabled             ${ssse3-no}"
6598     echo "AESNI enabled             ${aesni-no}"
6599     echo "AVX enabled               ${avx-no}"
6600     echo "XOP enabled               ${xop-no}"
6601     echo "FMA3 enabled              ${fma3-no}"
6602     echo "FMA4 enabled              ${fma4-no}"
6603     echo "i686 features enabled     ${i686-no}"
6604     echo "CMOV is fast              ${fast_cmov-no}"
6605     echo "EBX available             ${ebx_available-no}"
6606     echo "EBP available             ${ebp_available-no}"
6607 fi
6608 if enabled aarch64; then
6609     echo "NEON enabled              ${neon-no}"
6610     echo "VFP enabled               ${vfp-no}"
6611 fi
6612 if enabled arm; then
6613     echo "ARMv5TE enabled           ${armv5te-no}"
6614     echo "ARMv6 enabled             ${armv6-no}"
6615     echo "ARMv6T2 enabled           ${armv6t2-no}"
6616     echo "VFP enabled               ${vfp-no}"
6617     echo "NEON enabled              ${neon-no}"
6618     echo "THUMB enabled             ${thumb-no}"
6619 fi
6620 if enabled mips; then
6621     echo "MIPS FPU enabled          ${mipsfpu-no}"
6622     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6623     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6624     echo "MIPS MSA enabled          ${msa-no}"
6625     echo "LOONGSON MMI enabled      ${mmi-no}"
6626 fi
6627 if enabled ppc; then
6628     echo "AltiVec enabled           ${altivec-no}"
6629     echo "VSX enabled               ${vsx-no}"
6630     echo "POWER8 enabled            ${power8-no}"
6631     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6632     echo "dcbzl available           ${dcbzl-no}"
6633 fi
6634 echo "debug symbols             ${debug-no}"
6635 echo "strip symbols             ${stripping-no}"
6636 echo "optimize for size         ${small-no}"
6637 echo "optimizations             ${optimizations-no}"
6638 echo "static                    ${static-no}"
6639 echo "shared                    ${shared-no}"
6640 echo "postprocessing support    ${postproc-no}"
6641 echo "network support           ${network-no}"
6642 echo "threading support         ${thread_type-no}"
6643 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6644 echo "texi2html enabled         ${texi2html-no}"
6645 echo "perl enabled              ${perl-no}"
6646 echo "pod2man enabled           ${pod2man-no}"
6647 echo "makeinfo enabled          ${makeinfo-no}"
6648 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6649 test -n "$random_seed" &&
6650     echo "random seed               ${random_seed}"
6651 echo
6652
6653 echo "External libraries:"
6654 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6655 echo
6656
6657 echo "External libraries providing hardware acceleration:"
6658 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6659 echo
6660
6661 echo "Libraries:"
6662 print_enabled '' $LIBRARY_LIST | print_in_columns
6663 echo
6664
6665 echo "Programs:"
6666 print_enabled '' $PROGRAM_LIST | print_in_columns
6667 echo
6668
6669 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6670     echo "Enabled ${type}s:"
6671     eval list=\$$(toupper $type)_LIST
6672     print_enabled '_*' $list | print_in_columns
6673     echo
6674 done
6675
6676 if test -n "$ignore_tests"; then
6677     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6678     echo "Ignored FATE tests:"
6679     echo $ignore_tests | print_in_columns
6680     echo
6681 fi
6682
6683 echo "License: $license"
6684
6685 echo "Creating configuration files ..."
6686
6687 fi # test "$quiet" != "yes"
6688
6689 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6690
6691 enabled stripping || strip="echo skipping strip"
6692
6693 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6694
6695 cat > ffbuild/config.mak <<EOF
6696 # Automatically generated by configure - do not modify!
6697 ifndef FFMPEG_CONFIG_MAK
6698 FFMPEG_CONFIG_MAK=1
6699 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6700 prefix=$prefix
6701 LIBDIR=\$(DESTDIR)$libdir
6702 SHLIBDIR=\$(DESTDIR)$shlibdir
6703 INCDIR=\$(DESTDIR)$incdir
6704 BINDIR=\$(DESTDIR)$bindir
6705 DATADIR=\$(DESTDIR)$datadir
6706 DOCDIR=\$(DESTDIR)$docdir
6707 MANDIR=\$(DESTDIR)$mandir
6708 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6709 INSTALL_NAME_DIR=$install_name_dir
6710 SRC_PATH=$source_path
6711 SRC_LINK=$source_link
6712 ifndef MAIN_MAKEFILE
6713 SRC_PATH:=\$(SRC_PATH:.%=..%)
6714 endif
6715 CC_IDENT=$cc_ident
6716 ARCH=$arch
6717 INTRINSICS=$intrinsics
6718 CC=$cc
6719 CXX=$cxx
6720 AS=$as
6721 OBJCC=$objcc
6722 LD=$ld
6723 DEPCC=$dep_cc
6724 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6725 DEPAS=$as
6726 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6727 YASM=$yasmexe
6728 DEPYASM=$yasmexe
6729 AR=$ar
6730 ARFLAGS=$arflags
6731 AR_O=$ar_o
6732 RANLIB=$ranlib
6733 STRIP=$strip
6734 NVCC=$nvcc
6735 CP=cp -p
6736 LN_S=$ln_s
6737 CPPFLAGS=$CPPFLAGS
6738 CFLAGS=$CFLAGS
6739 CXXFLAGS=$CXXFLAGS
6740 OBJCFLAGS=$OBJCFLAGS
6741 ASFLAGS=$ASFLAGS
6742 NVCCFLAGS=$nvccflags
6743 AS_C=$AS_C
6744 AS_O=$AS_O
6745 OBJCC_C=$OBJCC_C
6746 OBJCC_E=$OBJCC_E
6747 OBJCC_O=$OBJCC_O
6748 CC_C=$CC_C
6749 CC_E=$CC_E
6750 CC_O=$CC_O
6751 CXX_C=$CXX_C
6752 CXX_O=$CXX_O
6753 NVCC_C=$NVCC_C
6754 NVCC_O=$NVCC_O
6755 LD_O=$LD_O
6756 LD_LIB=$LD_LIB
6757 LD_PATH=$LD_PATH
6758 DLLTOOL=$dlltool
6759 WINDRES=$windres
6760 DEPWINDRES=$dep_cc
6761 DOXYGEN=$doxygen
6762 LDFLAGS=$LDFLAGS
6763 LDEXEFLAGS=$LDEXEFLAGS
6764 LDLIBFLAGS=$LDLIBFLAGS
6765 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6766 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6767 YASMFLAGS=$YASMFLAGS
6768 BUILDSUF=$build_suffix
6769 PROGSSUF=$progs_suffix
6770 FULLNAME=$FULLNAME
6771 LIBPREF=$LIBPREF
6772 LIBSUF=$LIBSUF
6773 LIBNAME=$LIBNAME
6774 SLIBPREF=$SLIBPREF
6775 SLIBSUF=$SLIBSUF
6776 EXESUF=$EXESUF
6777 EXTRA_VERSION=$extra_version
6778 CCDEP=$CCDEP
6779 CXXDEP=$CXXDEP
6780 CCDEP_FLAGS=$CCDEP_FLAGS
6781 ASDEP=$ASDEP
6782 ASDEP_FLAGS=$ASDEP_FLAGS
6783 CC_DEPFLAGS=$CC_DEPFLAGS
6784 AS_DEPFLAGS=$AS_DEPFLAGS
6785 HOSTCC=$host_cc
6786 HOSTLD=$host_ld
6787 HOSTCFLAGS=$host_cflags
6788 HOSTCPPFLAGS=$host_cppflags
6789 HOSTEXESUF=$HOSTEXESUF
6790 HOSTLDFLAGS=$host_ldflags
6791 HOSTEXTRALIBS=$host_extralibs
6792 DEPHOSTCC=$host_cc
6793 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6794 HOSTCCDEP=$HOSTCCDEP
6795 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6796 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6797 HOSTCC_C=$HOSTCC_C
6798 HOSTCC_O=$HOSTCC_O
6799 HOSTLD_O=$HOSTLD_O
6800 TARGET_EXEC=$target_exec $target_exec_args
6801 TARGET_PATH=$target_path
6802 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6803 CFLAGS-ffplay=${sdl2_cflags}
6804 CFLAGS_HEADERS=$CFLAGS_HEADERS
6805 ZLIB=$($ldflags_filter -lz)
6806 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6807 EXTRALIBS=$extralibs
6808 COMPAT_OBJS=$compat_objs
6809 INSTALL=$install
6810 LIBTARGET=${LIBTARGET}
6811 SLIBNAME=${SLIBNAME}
6812 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6813 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6814 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6815 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6816 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6817 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6818 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6819 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6820 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6821 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6822 NOREDZONE_FLAGS=$noredzone_flags
6823 LIBFUZZER_PATH=$libfuzzer_path
6824 IGNORE_TESTS=$ignore_tests
6825 EOF
6826
6827 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
6828
6829 print_program_extralibs(){
6830     eval "program_extralibs=\$${1}_extralibs"
6831     eval echo "EXTRALIBS-${1}=${program_extralibs}" >> ffbuild/config.mak
6832 }
6833
6834 map 'print_program_extralibs $v' $PROGRAM_LIST
6835
6836 cat > $TMPH <<EOF
6837 /* Automatically generated by configure - do not modify! */
6838 #ifndef FFMPEG_CONFIG_H
6839 #define FFMPEG_CONFIG_H
6840 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6841 #define FFMPEG_LICENSE "$(c_escape $license)"
6842 #define CONFIG_THIS_YEAR 2017
6843 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6844 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6845 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6846 #define av_restrict $_restrict
6847 #define EXTERN_PREFIX "${extern_prefix}"
6848 #define EXTERN_ASM ${extern_prefix}
6849 #define BUILDSUF "$build_suffix"
6850 #define SLIBSUF "$SLIBSUF"
6851 #define HAVE_MMX2 HAVE_MMXEXT
6852 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6853 EOF
6854
6855 test -n "$assert_level" &&
6856     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6857
6858 test -n "$malloc_prefix" &&
6859     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6860
6861 if enabled yasm; then
6862     append config_files $TMPASM
6863     printf '' >$TMPASM
6864 fi
6865
6866 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6867
6868
6869 mkdir -p doc
6870 mkdir -p tests
6871 mkdir -p tests/api
6872 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6873
6874 print_config ARCH_   "$config_files" $ARCH_LIST
6875 print_config HAVE_   "$config_files" $HAVE_LIST
6876 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6877                                      $CONFIG_EXTRA      \
6878                                      $ALL_COMPONENTS    \
6879
6880 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6881 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
6882
6883 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6884 cp_if_changed $TMPH config.h
6885 touch ffbuild/.config
6886
6887 enabled yasm && cp_if_changed $TMPASM config.asm
6888
6889 cat > $TMPH <<EOF
6890 /* Generated by ffconf */
6891 #ifndef AVUTIL_AVCONFIG_H
6892 #define AVUTIL_AVCONFIG_H
6893 EOF
6894
6895 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6896
6897 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6898
6899 cp_if_changed $TMPH libavutil/avconfig.h
6900
6901 # generate the lists of enabled components
6902 print_enabled_components(){
6903     file=$1
6904     struct_name=$2
6905     name=$3
6906     shift 3
6907     echo "static const $struct_name *$name[] = {" > $TMPH
6908     for c in $*; do
6909         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6910     done
6911     echo "    NULL };" >> $TMPH
6912     cp_if_changed $TMPH $file
6913 }
6914
6915 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6916 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6917
6918 if test -n "$WARNINGS"; then
6919     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6920     enabled fatal_warnings && exit 1
6921 fi
6922
6923 # Settings for pkg-config files
6924
6925 cat > ffbuild/config.sh <<EOF
6926 # Automatically generated by configure - do not modify!
6927 shared=$shared
6928 build_suffix=$build_suffix
6929 prefix=$prefix
6930 libdir=$libdir
6931 incdir=$incdir
6932 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
6933 source_path=${source_path}
6934 LIBPREF=${LIBPREF}
6935 LIBSUF=${LIBSUF}
6936
6937 extralibs_avutil="$LIBRT $LIBM"
6938 extralibs_avcodec="$extralibs"
6939 extralibs_avformat="$extralibs"
6940 extralibs_avdevice="$extralibs"
6941 extralibs_avfilter="$extralibs"
6942 extralibs_avresample="$LIBM"
6943 extralibs_postproc=""
6944 extralibs_swscale="$LIBM"
6945 extralibs_swresample="$LIBM $LIBSOXR"
6946 EOF
6947
6948 for lib in $LIBRARY_LIST; do
6949     lib_deps="$(eval echo \$${lib}_deps)"
6950     echo ${lib}_deps=\"$lib_deps\" >> ffbuild/config.sh
6951 done