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

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --quiet                  Suppress showing informative output
  67   --list-decoders          show all available decoders
  68   --list-encoders          show all available encoders
  69   --list-hwaccels          show all available hardware accelerators
  70   --list-demuxers          show all available demuxers
  71   --list-muxers            show all available muxers
  72   --list-parsers           show all available parsers
  73   --list-protocols         show all available protocols
  74   --list-bsfs              show all available bitstream filters
  75   --list-indevs            show all available input devices
  76   --list-outdevs           show all available output devices
  77   --list-filters           show all available filters
  78
  79 Standard options:
  80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
  81   --disable-logging        do not log configure debug information
  82   --fatal-warnings         fail if any configure warning is generated
  83   --prefix=PREFIX          install in PREFIX [$prefix_default]
  84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  87   --libdir=DIR             install libs in DIR [PREFIX/lib]
  88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  89   --incdir=DIR             install includes in DIR [PREFIX/include]
  90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  92   --enable-rpath           use rpath to allow installing libraries in paths
  93                            not part of the dynamic linker search path
  94                            use rpath when linking programs (USE WITH CARE)
  95   --install-name-dir=DIR   Darwin directory name for installed targets
  96
  97 Licensing options:
  98   --enable-gpl             allow use of GPL code, the resulting libs
  99                            and binaries will be under GPL [no]
 100   --enable-version3        upgrade (L)GPL to version 3 [no]
 101   --enable-nonfree         allow use of nonfree code, the resulting libs
 102                            and binaries will be unredistributable [no]
 103
 104 Configuration options:
 105   --disable-static         do not build static libraries [no]
 106   --enable-shared          build shared libraries [no]
 107   --enable-small           optimize for size instead of speed
 108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
 109   --enable-gray            enable full grayscale support (slower color)
 110   --disable-swscale-alpha  disable alpha channel support in swscale
 111   --disable-all            disable building components, libraries and programs
 112   --enable-raise-major     increase major version numbers in sonames [no]
 113
 114 Program options:
 115   --disable-programs       do not build command line programs
 116   --disable-ffmpeg         disable ffmpeg build
 117   --disable-ffplay         disable ffplay build
 118   --disable-ffprobe        disable ffprobe build
 119   --disable-ffserver       disable ffserver build
 120
 121 Documentation options:
 122   --disable-doc            do not build documentation
 123   --disable-htmlpages      do not build HTML documentation pages
 124   --disable-manpages       do not build man documentation pages
 125   --disable-podpages       do not build POD documentation pages
 126   --disable-txtpages       do not build text documentation pages
 127
 128 Component options:
 129   --disable-avdevice       disable libavdevice build
 130   --disable-avcodec        disable libavcodec build
 131   --disable-avformat       disable libavformat build
 132   --disable-swresample     disable libswresample build
 133   --disable-swscale        disable libswscale build
 134   --disable-postproc       disable libpostproc build
 135   --disable-avfilter       disable libavfilter build
 136   --enable-avresample      enable libavresample build [no]
 137   --disable-pthreads       disable pthreads [autodetect]
 138   --disable-w32threads     disable Win32 threads [autodetect]
 139   --disable-os2threads     disable OS/2 threads [autodetect]
 140   --disable-network        disable network support [no]
 141   --disable-dct            disable DCT code
 142   --disable-dwt            disable DWT code
 143   --disable-error-resilience disable error resilience code
 144   --disable-lsp            disable LSP code
 145   --disable-lzo            disable LZO decoder code
 146   --disable-mdct           disable MDCT code
 147   --disable-rdft           disable RDFT code
 148   --disable-fft            disable FFT code
 149   --disable-faan           disable floating point AAN (I)DCT code
 150   --disable-pixelutils     disable pixel utils in libavutil
 151
 152 Individual component options:
 153   --disable-everything     disable all components listed below
 154   --disable-encoder=NAME   disable encoder NAME
 155   --enable-encoder=NAME    enable encoder NAME
 156   --disable-encoders       disable all encoders
 157   --disable-decoder=NAME   disable decoder NAME
 158   --enable-decoder=NAME    enable decoder NAME
 159   --disable-decoders       disable all decoders
 160   --disable-hwaccel=NAME   disable hwaccel NAME
 161   --enable-hwaccel=NAME    enable hwaccel NAME
 162   --disable-hwaccels       disable all hwaccels
 163   --disable-muxer=NAME     disable muxer NAME
 164   --enable-muxer=NAME      enable muxer NAME
 165   --disable-muxers         disable all muxers
 166   --disable-demuxer=NAME   disable demuxer NAME
 167   --enable-demuxer=NAME    enable demuxer NAME
 168   --disable-demuxers       disable all demuxers
 169   --enable-parser=NAME     enable parser NAME
 170   --disable-parser=NAME    disable parser NAME
 171   --disable-parsers        disable all parsers
 172   --enable-bsf=NAME        enable bitstream filter NAME
 173   --disable-bsf=NAME       disable bitstream filter NAME
 174   --disable-bsfs           disable all bitstream filters
 175   --enable-protocol=NAME   enable protocol NAME
 176   --disable-protocol=NAME  disable protocol NAME
 177   --disable-protocols      disable all protocols
 178   --enable-indev=NAME      enable input device NAME
 179   --disable-indev=NAME     disable input device NAME
 180   --disable-indevs         disable input devices
 181   --enable-outdev=NAME     enable output device NAME
 182   --disable-outdev=NAME    disable output device NAME
 183   --disable-outdevs        disable output devices
 184   --disable-devices        disable all devices
 185   --enable-filter=NAME     enable filter NAME
 186   --disable-filter=NAME    disable filter NAME
 187   --disable-filters        disable all filters
 188
 189 External library support:
 190
 191   Using any of the following switches will allow FFmpeg to link to the
 192   corresponding external library. All the components depending on that library
 193   will become enabled, if all their other dependencies are met and they are not
 194   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 195   libwavpack and allow the libwavpack encoder to be built, unless it is
 196   specifically disabled with --disable-encoder=libwavpack.
 197
 198   Note that only the system libraries are auto-detected. All the other external
 199   libraries must be explicitly enabled.
 200
 201   Also note that the following help text describes the purpose of the libraries
 202   themselves, not all their features will necessarily be usable by FFmpeg.
 203
 204   --enable-avisynth        enable reading of AviSynth script files [no]
 205   --disable-bzlib          disable bzlib [autodetect]
 206   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 207   --enable-frei0r          enable frei0r video filtering [no]
 208   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 209                            if openssl, librtmp or gmp is not used [no]
 210   --enable-gmp             enable gmp, needed for rtmp(t)e support
 211                            if openssl or librtmp is not used [no]
 212   --enable-gnutls          enable gnutls, needed for https support
 213                            if openssl is not used [no]
 214   --disable-iconv          disable iconv [autodetect]
 215   --enable-jni             enable JNI support [no]
 216   --enable-ladspa          enable LADSPA audio filtering [no]
 217   --enable-libass          enable libass subtitles rendering,
 218                            needed for subtitles and ass filter [no]
 219   --enable-libbluray       enable BluRay reading using libbluray [no]
 220   --enable-libbs2b         enable bs2b DSP library [no]
 221   --enable-libcaca         enable textual display using libcaca [no]
 222   --enable-libcelt         enable CELT decoding via libcelt [no]
 223   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 224   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 225                            and libraw1394 [no]
 226   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 227   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 228   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 229   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 230   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 231   --enable-libgme          enable Game Music Emu via libgme [no]
 232   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 233   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 234   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 235   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 236   --enable-libmodplug      enable ModPlug via libmodplug [no]
 237   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 238   --enable-libnut          enable NUT (de)muxing via libnut,
 239                            native (de)muxer exists [no]
 240   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 241   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 242   --enable-libopencv       enable video filtering via libopencv [no]
 243   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 244   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 245   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 246   --enable-libopus         enable Opus de/encoding via libopus [no]
 247   --enable-libpulse        enable Pulseaudio input via libpulse [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   --ld=LD                  use linker LD [$ld_default]
 342   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 343   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 344   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 345   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 346   --host-cc=HOSTCC         use host C compiler HOSTCC
 347   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 348   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 349   --host-ld=HOSTLD         use host linker HOSTLD
 350   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 351   --host-libs=HLIBS        use libs HLIBS when linking for host
 352   --host-os=OS             compiler host OS [$target_os]
 353   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 354   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 355   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 356   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 357   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 358   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 359   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 360   --extra-version=STRING   version string suffix []
 361   --optflags=OPTFLAGS      override optimization-related compiler flags
 362   --build-suffix=SUFFIX    library name suffix []
 363   --enable-pic             build position-independent code
 364   --enable-thumb           compile for Thumb instruction set
 365   --enable-lto             use link-time optimization
 366   --env="ENV=override"     override the environment variables
 367
 368 Advanced options (experts only):
 369   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 370   --custom-allocator=NAME  use a supported custom allocator
 371   --disable-symver         disable symbol versioning
 372   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 373   --disable-safe-bitstream-reader
 374                            disable buffer boundary checking in bitreaders
 375                            (faster, but may crash)
 376   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 377
 378 Optimization options (experts only):
 379   --disable-asm            disable all assembly optimizations
 380   --disable-altivec        disable AltiVec optimizations
 381   --disable-vsx            disable VSX optimizations
 382   --disable-power8         disable POWER8 optimizations
 383   --disable-amd3dnow       disable 3DNow! optimizations
 384   --disable-amd3dnowext    disable 3DNow! extended optimizations
 385   --disable-mmx            disable MMX optimizations
 386   --disable-mmxext         disable MMXEXT optimizations
 387   --disable-sse            disable SSE optimizations
 388   --disable-sse2           disable SSE2 optimizations
 389   --disable-sse3           disable SSE3 optimizations
 390   --disable-ssse3          disable SSSE3 optimizations
 391   --disable-sse4           disable SSE4 optimizations
 392   --disable-sse42          disable SSE4.2 optimizations
 393   --disable-avx            disable AVX optimizations
 394   --disable-xop            disable XOP optimizations
 395   --disable-fma3           disable FMA3 optimizations
 396   --disable-fma4           disable FMA4 optimizations
 397   --disable-avx2           disable AVX2 optimizations
 398   --disable-aesni          disable AESNI optimizations
 399   --disable-armv5te        disable armv5te optimizations
 400   --disable-armv6          disable armv6 optimizations
 401   --disable-armv6t2        disable armv6t2 optimizations
 402   --disable-vfp            disable VFP optimizations
 403   --disable-neon           disable NEON optimizations
 404   --disable-inline-asm     disable use of inline assembly
 405   --disable-yasm           disable use of nasm/yasm assembly
 406   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 407   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 408   --disable-msa            disable MSA optimizations
 409   --disable-mipsfpu        disable floating point MIPS optimizations
 410   --disable-mmi            disable Loongson SIMD optimizations
 411   --disable-fast-unaligned consider unaligned accesses slow
 412
 413 Developer options (useful when working on FFmpeg itself):
 414   --disable-debug          disable debugging symbols
 415   --enable-debug=LEVEL     set the debug level [$debuglevel]
 416   --disable-optimizations  disable compiler optimizations
 417   --enable-extra-warnings  enable more compiler warnings
 418   --disable-stripping      disable stripping of executables and shared libraries
 419   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 420                            2 causes a slowdown at runtime.
 421   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 422   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 423                            leaks and errors, using the specified valgrind binary.
 424                            Cannot be combined with --target-exec
 425   --enable-ftrapv          Trap arithmetic overflows
 426   --samples=PATH           location of test samples for FATE, if not set use
 427                            \$FATE_SAMPLES at make invocation time.
 428   --enable-neon-clobber-test check NEON registers for clobbering (should be
 429                            used only for debugging purposes)
 430   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 431                            should be used only for debugging purposes)
 432   --enable-random          randomly enable/disable components
 433   --disable-random
 434   --enable-random=LIST     randomly enable/disable specific components or
 435   --disable-random=LIST    component groups. LIST is a comma-separated list
 436                            of NAME[:PROB] entries where NAME is a component
 437                            (group) and PROB the probability associated with
 438                            NAME (default 0.5).
 439   --random-seed=VALUE      seed value for --enable/disable-random
 440   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 441                            (only applies to --disable-optimizations builds)
 442   --enable-osfuzz          Enable building fuzzer tool
 443   --libfuzzer=PATH         path to libfuzzer
 444   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 445                            in the name) of tests whose result is ignored
 446
 447 NOTE: Object files are built at the place where configure is launched.
 448 EOF
 449   exit 0
 450 }
 451
 452 quotes='""'
 453 if test -t 1 && which tput >/dev/null 2>&1; then
 454     ncolors=$(tput colors)
 455     if test -n "$ncolors" && test $ncolors -ge 8; then
 456         bold_color=$(tput bold)
 457         warn_color=$(tput setaf 3)
 458         error_color=$(tput setaf 1)
 459         reset_color=$(tput sgr0)
 460     fi
 461     # 72 used instead of 80 since that's the default of pr
 462     ncols=$(tput cols)
 463 fi
 464 : ${ncols:=72}
 465
 466 log(){
 467     echo "$@" >> $logfile
 468 }
 469
 470 log_file(){
 471     log BEGIN $1
 472     pr -n -t $1 >> $logfile
 473     log END $1
 474 }
 475
 476 warn(){
 477     log "WARNING: $*"
 478     WARNINGS="${WARNINGS}WARNING: $*\n"
 479 }
 480
 481 die(){
 482     log "$@"
 483     echo "$error_color$bold_color$@$reset_color"
 484     cat <<EOF
 485
 486 If you think configure made a mistake, make sure you are using the latest
 487 version from Git.  If the latest version fails, report the problem to the
 488 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 489 EOF
 490     if disabled logging; then
 491         cat <<EOF
 492 Rerun configure with logging enabled (do not use --disable-logging), and
 493 include the log this produces with your report.
 494 EOF
 495     else
 496         cat <<EOF
 497 Include the log file "$logfile" produced by configure as this will help
 498 solve the problem.
 499 EOF
 500     fi
 501     exit 1
 502 }
 503
 504 # Avoid locale weirdness, besides we really just want to translate ASCII.
 505 toupper(){
 506     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 507 }
 508
 509 tolower(){
 510     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 511 }
 512
 513 c_escape(){
 514     echo "$*" | sed 's/["\\]/\\\0/g'
 515 }
 516
 517 sh_quote(){
 518     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 519     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 520     echo "$v"
 521 }
 522
 523 cleanws(){
 524     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 525 }
 526
 527 filter(){
 528     pat=$1
 529     shift
 530     for v; do
 531         eval "case $v in $pat) printf '%s ' $v ;; esac"
 532     done
 533 }
 534
 535 filter_out(){
 536     pat=$1
 537     shift
 538     for v; do
 539         eval "case $v in $pat) ;; *) printf '%s ' $v ;; esac"
 540     done
 541 }
 542
 543 map(){
 544     m=$1
 545     shift
 546     for v; do eval $m; done
 547 }
 548
 549 add_suffix(){
 550     suffix=$1
 551     shift
 552     for v; do echo ${v}${suffix}; done
 553 }
 554
 555 set_all(){
 556     value=$1
 557     shift
 558     for var in $*; do
 559         eval $var=$value
 560     done
 561 }
 562
 563 set_weak(){
 564     value=$1
 565     shift
 566     for var; do
 567         eval : \${$var:=$value}
 568     done
 569 }
 570
 571 sanitize_var_name(){
 572     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 573 }
 574
 575 set_safe(){
 576     var=$1
 577     shift
 578     eval $(sanitize_var_name "$var")='$*'
 579 }
 580
 581 get_safe(){
 582     eval echo \$$(sanitize_var_name "$1")
 583 }
 584
 585 pushvar(){
 586     for pvar in $*; do
 587         eval level=\${${pvar}_level:=0}
 588         eval ${pvar}_${level}="\$$pvar"
 589         eval ${pvar}_level=$(($level+1))
 590     done
 591 }
 592
 593 popvar(){
 594     for pvar in $*; do
 595         eval level=\${${pvar}_level:-0}
 596         test $level = 0 && continue
 597         eval level=$(($level-1))
 598         eval $pvar="\${${pvar}_${level}}"
 599         eval ${pvar}_level=$level
 600         eval unset ${pvar}_${level}
 601     done
 602 }
 603
 604 request(){
 605     for var in $*; do
 606         eval ${var}_requested=yes
 607         eval $var=
 608     done
 609 }
 610
 611 enable(){
 612     set_all yes $*
 613 }
 614
 615 disable(){
 616     set_all no $*
 617 }
 618
 619 enable_weak(){
 620     set_weak yes $*
 621 }
 622
 623 disable_weak(){
 624     set_weak no $*
 625 }
 626
 627 enable_safe(){
 628     for var; do
 629         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 630     done
 631 }
 632
 633 disable_safe(){
 634     for var; do
 635         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 636     done
 637 }
 638
 639 do_enable_deep(){
 640     for var; do
 641         enabled $var && continue
 642         eval sel="\$${var}_select"
 643         eval sgs="\$${var}_suggest"
 644         pushvar var sgs
 645         enable_deep $sel
 646         popvar sgs
 647         enable_deep_weak $sgs
 648         popvar var
 649     done
 650 }
 651
 652 enable_deep(){
 653     do_enable_deep $*
 654     enable $*
 655 }
 656
 657 enable_deep_weak(){
 658     for var; do
 659         disabled $var && continue
 660         pushvar var
 661         do_enable_deep $var
 662         popvar var
 663         enable_weak $var
 664     done
 665 }
 666
 667 requested(){
 668     test "${1#!}" = "$1" && op='=' || op=!=
 669     eval test "x\$${1#!}_requested" $op "xyes"
 670 }
 671
 672 enabled(){
 673     test "${1#!}" = "$1" && op='=' || op=!=
 674     eval test "x\$${1#!}" $op "xyes"
 675 }
 676
 677 disabled(){
 678     test "${1#!}" = "$1" && op='=' || op=!=
 679     eval test "x\$${1#!}" $op "xno"
 680 }
 681
 682 enabled_all(){
 683     for opt; do
 684         enabled $opt || return 1
 685     done
 686 }
 687
 688 disabled_all(){
 689     for opt; do
 690         disabled $opt || return 1
 691     done
 692 }
 693
 694 enabled_any(){
 695     for opt; do
 696         enabled $opt && return 0
 697     done
 698 }
 699
 700 disabled_any(){
 701     for opt; do
 702         disabled $opt && return 0
 703     done
 704     return 1
 705 }
 706
 707 set_default(){
 708     for opt; do
 709         eval : \${$opt:=\$${opt}_default}
 710     done
 711 }
 712
 713 is_in(){
 714     value=$1
 715     shift
 716     for var in $*; do
 717         [ $var = $value ] && return 0
 718     done
 719     return 1
 720 }
 721
 722 do_check_deps(){
 723     for cfg; do
 724         cfg="${cfg#!}"
 725         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 726         disabled ${cfg}_checking && continue
 727         enable ${cfg}_checking
 728         append allopts $cfg
 729
 730         eval dep_all="\$${cfg}_deps"
 731         eval dep_any="\$${cfg}_deps_any"
 732         eval dep_sel="\$${cfg}_select"
 733         eval dep_sgs="\$${cfg}_suggest"
 734         eval dep_ifa="\$${cfg}_if"
 735         eval dep_ifn="\$${cfg}_if_any"
 736
 737         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 738         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 739         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 740
 741         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 742         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 743         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 744         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 745         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 746
 747         if enabled $cfg; then
 748             enable_deep $dep_sel
 749             enable_deep_weak $dep_sgs
 750         fi
 751
 752         disable ${cfg}_checking
 753     done
 754 }
 755
 756 check_deps(){
 757     unset allopts
 758
 759     do_check_deps "$@"
 760
 761     for cfg in $allopts; do
 762         enabled $cfg || continue
 763         eval dep_extralibs="\$${cfg}_extralibs"
 764         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 765     done
 766 }
 767
 768 print_config(){
 769     pfx=$1
 770     files=$2
 771     shift 2
 772     map 'eval echo "$v \${$v:-no}"' "$@" |
 773     awk "BEGIN { split(\"$files\", files) }
 774         {
 775             c = \"$pfx\" toupper(\$1);
 776             v = \$2;
 777             sub(/yes/, 1, v);
 778             sub(/no/,  0, v);
 779             for (f in files) {
 780                 file = files[f];
 781                 if (file ~ /\\.h\$/) {
 782                     printf(\"#define %s %d\\n\", c, v) >>file;
 783                 } else if (file ~ /\\.asm\$/) {
 784                     printf(\"%%define %s %d\\n\", c, v) >>file;
 785                 } else if (file ~ /\\.mak\$/) {
 786                     n = -v ? \"\" : \"!\";
 787                     printf(\"%s%s=yes\\n\", n, c) >>file;
 788                 } else if (file ~ /\\.texi\$/) {
 789                     pre = -v ? \"\" : \"@c \";
 790                     yesno = \$2;
 791                     c2 = tolower(c);
 792                     gsub(/_/, \"-\", c2);
 793                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 794                 }
 795             }
 796         }"
 797 }
 798
 799 print_enabled(){
 800     suf=$1
 801     shift
 802     for v; do
 803         enabled $v && printf "%s\n" ${v%$suf}
 804     done
 805 }
 806
 807 append(){
 808     var=$1
 809     shift
 810     eval "$var=\"\$$var $*\""
 811 }
 812
 813 prepend(){
 814     var=$1
 815     shift
 816     eval "$var=\"$* \$$var\""
 817 }
 818
 819 unique(){
 820     var=$1
 821     uniq_list=""
 822     for tok in $(eval echo \$$var); do
 823         uniq_list="$(filter_out $tok $uniq_list) $tok"
 824     done
 825     eval "$var=\"${uniq_list}\""
 826 }
 827
 828 add_cppflags(){
 829     append CPPFLAGS "$@"
 830 }
 831
 832 add_cflags(){
 833     append CFLAGS $($cflags_filter "$@")
 834 }
 835
 836 add_cflags_headers(){
 837     append CFLAGS_HEADERS $($cflags_filter "$@")
 838 }
 839
 840 add_cxxflags(){
 841     append CXXFLAGS $($cflags_filter "$@")
 842 }
 843
 844 add_asflags(){
 845     append ASFLAGS $($asflags_filter "$@")
 846 }
 847
 848 add_objcflags(){
 849     append OBJCFLAGS $($objcflags_filter "$@")
 850 }
 851
 852 add_ldflags(){
 853     append LDFLAGS $($ldflags_filter "$@")
 854 }
 855
 856 add_ldexeflags(){
 857     append LDEXEFLAGS $($ldflags_filter "$@")
 858 }
 859
 860 add_ldlibflags(){
 861     append LDLIBFLAGS $($ldflags_filter "$@")
 862 }
 863
 864 add_stripflags(){
 865     append ASMSTRIPFLAGS "$@"
 866 }
 867
 868 add_extralibs(){
 869     prepend extralibs $($ldflags_filter "$@")
 870 }
 871
 872 add_host_cppflags(){
 873     append host_cppflags "$@"
 874 }
 875
 876 add_host_cflags(){
 877     append host_cflags $($host_cflags_filter "$@")
 878 }
 879
 880 add_host_ldflags(){
 881     append host_ldflags $($host_ldflags_filter "$@")
 882 }
 883
 884 add_compat(){
 885     append compat_objs $1
 886     shift
 887     map 'add_cppflags -D$v' "$@"
 888 }
 889
 890 check_cmd(){
 891     log "$@"
 892     "$@" >> $logfile 2>&1
 893 }
 894
 895 check_stat(){
 896     log check_stat "$@"
 897     stat "$1" >> $logfile 2>&1
 898 }
 899
 900 cc_o(){
 901     eval printf '%s\\n' $CC_O
 902 }
 903
 904 cc_e(){
 905     eval printf '%s\\n' $CC_E
 906 }
 907
 908 check_cc(){
 909     log check_cc "$@"
 910     cat > $TMPC
 911     log_file $TMPC
 912     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 913 }
 914
 915 check_cxx(){
 916     log check_cxx "$@"
 917     cat > $TMPCPP
 918     log_file $TMPCPP
 919     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 920 }
 921
 922 check_objcc(){
 923     log check_objcc "$@"
 924     cat > $TMPM
 925     log_file $TMPM
 926     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 927 }
 928
 929 check_cpp(){
 930     log check_cpp "$@"
 931     cat > $TMPC
 932     log_file $TMPC
 933     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 934 }
 935
 936 as_o(){
 937     eval printf '%s\\n' $AS_O
 938 }
 939
 940 check_as(){
 941     log check_as "$@"
 942     cat > $TMPS
 943     log_file $TMPS
 944     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 945 }
 946
 947 check_inline_asm(){
 948     log check_inline_asm "$@"
 949     name="$1"
 950     code="$2"
 951     shift 2
 952     disable $name
 953     check_cc "$@" <<EOF && enable $name
 954 void foo(void){ __asm__ volatile($code); }
 955 EOF
 956 }
 957
 958 check_inline_asm_flags(){
 959     log check_inline_asm_flags "$@"
 960     name="$1"
 961     code="$2"
 962     flags=''
 963     shift 2
 964     while [ "$1" != "" ]; do
 965       append flags $1
 966       shift
 967     done;
 968     disable $name
 969     cat > $TMPC <<EOF
 970 void foo(void){ __asm__ volatile($code); }
 971 EOF
 972     log_file $TMPC
 973     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 974     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 975 }
 976
 977 check_insn(){
 978     log check_insn "$@"
 979     check_inline_asm ${1}_inline "\"$2\""
 980     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 981 }
 982
 983 check_yasm(){
 984     log check_yasm "$@"
 985     echo "$1" > $TMPS
 986     log_file $TMPS
 987     shift 1
 988     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 989 }
 990
 991 ld_o(){
 992     eval printf '%s\\n' $LD_O
 993 }
 994
 995 check_ld(){
 996     log check_ld "$@"
 997     type=$1
 998     shift 1
 999     flags=$(filter_out '-l*|*.so' $@)
1000     libs=$(filter '-l*|*.so' $@)
1001     check_$type $($cflags_filter $flags) || return
1002     flags=$($ldflags_filter $flags)
1003     libs=$($ldflags_filter $libs)
1004     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1005 }
1006
1007 print_include(){
1008     hdr=$1
1009     test "${hdr%.h}" = "${hdr}" &&
1010         echo "#include $hdr"    ||
1011         echo "#include <$hdr>"
1012 }
1013
1014 check_code(){
1015     log check_code "$@"
1016     check=$1
1017     headers=$2
1018     code=$3
1019     shift 3
1020     {
1021         for hdr in $headers; do
1022             print_include $hdr
1023         done
1024         echo "int main(void) { $code; return 0; }"
1025     } | check_$check "$@"
1026 }
1027
1028 check_cppflags(){
1029     log check_cppflags "$@"
1030     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1031 int x;
1032 EOF
1033 }
1034
1035 test_cflags(){
1036     log test_cflags "$@"
1037     set -- $($cflags_filter "$@")
1038     check_cc "$@" <<EOF
1039 int x;
1040 EOF
1041 }
1042
1043 check_cflags(){
1044     log check_cflags "$@"
1045     test_cflags "$@" && add_cflags "$@"
1046 }
1047
1048 check_cxxflags(){
1049     log check_cxxflags "$@"
1050     set -- $($cflags_filter "$@")
1051     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1052 int x;
1053 EOF
1054 }
1055
1056 test_objcflags(){
1057     log test_objcflags "$@"
1058     set -- $($objcflags_filter "$@")
1059     check_objcc "$@" <<EOF
1060 int x;
1061 EOF
1062 }
1063
1064 check_objcflags(){
1065     log check_objcflags "$@"
1066     test_objcflags "$@" && add_objcflags "$@"
1067 }
1068
1069 test_ldflags(){
1070     log test_ldflags "$@"
1071     check_ld "cc" "$@" <<EOF
1072 int main(void){ return 0; }
1073 EOF
1074 }
1075
1076 check_ldflags(){
1077     log check_ldflags "$@"
1078     test_ldflags "$@" && add_ldflags "$@"
1079 }
1080
1081 test_stripflags(){
1082     log test_stripflags "$@"
1083     # call check_cc to get a fresh TMPO
1084     check_cc <<EOF
1085 int main(void) { return 0; }
1086 EOF
1087     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1088 }
1089
1090 check_stripflags(){
1091     log check_stripflags "$@"
1092     test_stripflags "$@" && add_stripflags "$@"
1093 }
1094
1095 check_header(){
1096     log check_header "$@"
1097     header=$1
1098     shift
1099     disable_safe $header
1100     check_cpp "$@" <<EOF && enable_safe $header
1101 #include <$header>
1102 int x;
1103 EOF
1104 }
1105
1106 check_header_objcc(){
1107     log check_header_objcc "$@"
1108     rm -f -- "$TMPO"
1109     header=$1
1110     shift
1111     disable_safe $header
1112     {
1113        echo "#include <$header>"
1114        echo "int main(void) { return 0; }"
1115     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1116 }
1117
1118 check_func(){
1119     log check_func "$@"
1120     func=$1
1121     shift
1122     disable $func
1123     check_ld "cc" "$@" <<EOF && enable $func
1124 extern int $func();
1125 int main(void){ $func(); }
1126 EOF
1127 }
1128
1129 check_complexfunc(){
1130     log check_complexfunc "$@"
1131     func=$1
1132     narg=$2
1133     shift 2
1134     test $narg = 2 && args="f, g" || args="f * I"
1135     disable $func
1136     check_ld "cc" "$@" <<EOF && enable $func
1137 #include <complex.h>
1138 #include <math.h>
1139 float foo(complex float f, complex float g) { return $func($args); }
1140 int main(void){ return (int) foo; }
1141 EOF
1142 }
1143
1144 check_mathfunc(){
1145     log check_mathfunc "$@"
1146     func=$1
1147     narg=$2
1148     shift 2
1149     test $narg = 2 && args="f, g" || args="f"
1150     disable $func
1151     check_ld "cc" "$@" <<EOF && enable $func
1152 #include <math.h>
1153 float foo(float f, float g) { return $func($args); }
1154 int main(void){ return (int) foo; }
1155 EOF
1156 }
1157
1158 check_func_headers(){
1159     log check_func_headers "$@"
1160     headers=$1
1161     funcs=$2
1162     shift 2
1163     {
1164         for hdr in $headers; do
1165             print_include $hdr
1166         done
1167         echo "#include <stdint.h>"
1168         for func in $funcs; do
1169             echo "long check_$func(void) { return (long) $func; }"
1170         done
1171         echo "int main(void) { int ret = 0;"
1172         # LTO could optimize out the test functions without this
1173         for func in $funcs; do
1174             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1175         done
1176         echo "return ret; }"
1177     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1178 }
1179
1180 check_class_headers_cpp(){
1181     log check_class_headers_cpp "$@"
1182     headers=$1
1183     classes=$2
1184     shift 2
1185     {
1186         for hdr in $headers; do
1187             echo "#include <$hdr>"
1188         done
1189         echo "int main(void) { "
1190         i=1
1191         for class in $classes; do
1192             echo "$class obj$i;"
1193             i=$(expr $i + 1)
1194         done
1195         echo "return 0; }"
1196     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1197 }
1198
1199 check_cpp_condition(){
1200     log check_cpp_condition "$@"
1201     header=$1
1202     condition=$2
1203     shift 2
1204     check_cpp "$@" <<EOF
1205 #include <$header>
1206 #if !($condition)
1207 #error "unsatisfied condition: $condition"
1208 #endif
1209 EOF
1210 }
1211
1212 test_cflags_cc(){
1213     log test_cflags_cc "$@"
1214     flags=$1
1215     header=$2
1216     condition=$3
1217     shift 3
1218     set -- $($cflags_filter "$flags")
1219     check_cc "$@" <<EOF
1220 #include <$header>
1221 #if !($condition)
1222 #error "unsatisfied condition: $condition"
1223 #endif
1224 EOF
1225 }
1226
1227 check_lib(){
1228     log check_lib "$@"
1229     name="$1"
1230     headers="$2"
1231     funcs="$3"
1232     shift 3
1233     disable $name
1234     check_func_headers "$headers" "$funcs" "$@" &&
1235         enable $name && add_extralibs "$@"
1236 }
1237
1238 check_lib_cpp(){
1239     log check_lib_cpp "$@"
1240     headers="$1"
1241     classes="$2"
1242     shift 2
1243     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1244 }
1245
1246 check_pkg_config(){
1247     log check_pkg_config "$@"
1248     pkg_version="$1"
1249     pkg="${1%% *}"
1250     headers="$2"
1251     funcs="$3"
1252     shift 3
1253     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1254     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1255     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1256     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1257         set_safe "${pkg}_cflags"    $pkg_cflags &&
1258         set_safe "${pkg}_extralibs" $pkg_libs
1259 }
1260
1261 check_exec(){
1262     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1263 }
1264
1265 check_exec_crash(){
1266     log check_exec_crash "$@"
1267     code=$(cat)
1268
1269     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1270     # are safe but may not be available everywhere.  Thus we use
1271     # raise(SIGTERM) instead.  The check is run in a subshell so we
1272     # can redirect the "Terminated" message from the shell.  SIGBUS
1273     # is not defined by standard C so it is used conditionally.
1274
1275     (check_exec "$@") >> $logfile 2>&1 <<EOF
1276 #include <signal.h>
1277 static void sighandler(int sig){
1278     raise(SIGTERM);
1279 }
1280 int foo(void){
1281     $code
1282 }
1283 int (*func_ptr)(void) = foo;
1284 int main(void){
1285     signal(SIGILL, sighandler);
1286     signal(SIGFPE, sighandler);
1287     signal(SIGSEGV, sighandler);
1288 #ifdef SIGBUS
1289     signal(SIGBUS, sighandler);
1290 #endif
1291     return func_ptr();
1292 }
1293 EOF
1294 }
1295
1296 check_type(){
1297     log check_type "$@"
1298     headers=$1
1299     type=$2
1300     shift 2
1301     disable_safe "$type"
1302     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1303 }
1304
1305 check_struct(){
1306     log check_struct "$@"
1307     headers=$1
1308     struct=$2
1309     member=$3
1310     shift 3
1311     disable_safe "${struct}_${member}"
1312     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1313         enable_safe "${struct}_${member}"
1314 }
1315
1316 check_builtin(){
1317     log check_builtin "$@"
1318     name=$1
1319     headers=$2
1320     builtin=$3
1321     shift 3
1322     disable "$name"
1323     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1324 }
1325
1326 check_compile_assert(){
1327     log check_compile_assert "$@"
1328     name=$1
1329     headers=$2
1330     condition=$3
1331     shift 3
1332     disable "$name"
1333     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1334 }
1335
1336 require(){
1337     log require "$@"
1338     name_version="$1"
1339     name="${1%% *}"
1340     headers="$2"
1341     func="$3"
1342     shift 3
1343     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1344 }
1345
1346 require_cpp(){
1347     name="$1"
1348     headers="$2"
1349     classes="$3"
1350     shift 3
1351     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1352 }
1353
1354 use_pkg_config(){
1355     log use_pkg_config "$@"
1356     pkg="$1"
1357     check_pkg_config "$@" || return 1
1358     add_cflags    $(get_safe "${pkg}_cflags")
1359     add_extralibs $(get_safe "${pkg}_extralibs")
1360 }
1361
1362 require_pkg_config(){
1363     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1364 }
1365
1366 hostcc_e(){
1367     eval printf '%s\\n' $HOSTCC_E
1368 }
1369
1370 hostcc_o(){
1371     eval printf '%s\\n' $HOSTCC_O
1372 }
1373
1374 check_host_cc(){
1375     log check_host_cc "$@"
1376     cat > $TMPC
1377     log_file $TMPC
1378     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1379 }
1380
1381 check_host_cpp(){
1382     log check_host_cpp "$@"
1383     cat > $TMPC
1384     log_file $TMPC
1385     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1386 }
1387
1388 check_host_cppflags(){
1389     log check_host_cppflags "$@"
1390     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1391 int x;
1392 EOF
1393 }
1394
1395 check_host_cflags(){
1396     log check_host_cflags "$@"
1397     set -- $($host_cflags_filter "$@")
1398     check_host_cc "$@" <<EOF && append host_cflags "$@"
1399 int x;
1400 EOF
1401 }
1402
1403 check_host_cpp_condition(){
1404     log check_host_cpp_condition "$@"
1405     header=$1
1406     condition=$2
1407     shift 2
1408     check_host_cpp "$@" <<EOF
1409 #include <$header>
1410 #if !($condition)
1411 #error "unsatisfied condition: $condition"
1412 #endif
1413 EOF
1414 }
1415
1416 cp_if_changed(){
1417     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1418     mkdir -p "$(dirname $2)"
1419     cp -f "$1" "$2"
1420 }
1421
1422 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1423 # system-dependent things.
1424
1425 AVCODEC_COMPONENTS="
1426     bsfs
1427     decoders
1428     encoders
1429     hwaccels
1430     parsers
1431 "
1432
1433 AVDEVICE_COMPONENTS="
1434     indevs
1435     outdevs
1436 "
1437 AVFILTER_COMPONENTS="
1438     filters
1439 "
1440 AVFORMAT_COMPONENTS="
1441     demuxers
1442     muxers
1443     protocols
1444 "
1445
1446 AVRESAMPLE_COMPONENTS=""
1447 AVUTIL_COMPONENTS=""
1448
1449 COMPONENT_LIST="
1450     $AVCODEC_COMPONENTS
1451     $AVDEVICE_COMPONENTS
1452     $AVFILTER_COMPONENTS
1453     $AVFORMAT_COMPONENTS
1454     $AVRESAMPLE_COMPONENTS
1455     $AVUTIL_COMPONENTS
1456 "
1457
1458 EXAMPLE_LIST="
1459     avio_dir_cmd_example
1460     avio_reading_example
1461     decode_audio_example
1462     decode_video_example
1463     demuxing_decoding_example
1464     encode_audio_example
1465     encode_video_example
1466     extract_mvs_example
1467     filter_audio_example
1468     filtering_audio_example
1469     filtering_video_example
1470     http_multiclient_example
1471     metadata_example
1472     muxing_example
1473     qsvdec_example
1474     remuxing_example
1475     resampling_audio_example
1476     scaling_video_example
1477     transcode_aac_example
1478     transcoding_example
1479 "
1480 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1481     bzlib
1482     iconv
1483     libxcb
1484     libxcb_shm
1485     libxcb_shape
1486     libxcb_xfixes
1487     lzma
1488     schannel
1489     sdl
1490     sdl2
1491     securetransport
1492     xlib
1493     zlib
1494 "
1495
1496 EXTERNAL_LIBRARY_GPL_LIST="
1497     avisynth
1498     frei0r
1499     libcdio
1500     librubberband
1501     libvidstab
1502     libx264
1503     libx265
1504     libxavs
1505     libxvid
1506 "
1507
1508 EXTERNAL_LIBRARY_NONFREE_LIST="
1509     decklink
1510     libfdk_aac
1511     openssl
1512 "
1513
1514 EXTERNAL_LIBRARY_VERSION3_LIST="
1515     gmp
1516     libopencore_amrnb
1517     libopencore_amrwb
1518     libvo_amrwbenc
1519 "
1520
1521 EXTERNAL_LIBRARY_GPLV3_LIST="
1522     libsmbclient
1523 "
1524
1525 EXTERNAL_LIBRARY_LIST="
1526     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1527     $EXTERNAL_LIBRARY_GPL_LIST
1528     $EXTERNAL_LIBRARY_NONFREE_LIST
1529     $EXTERNAL_LIBRARY_VERSION3_LIST
1530     $EXTERNAL_LIBRARY_GPLV3_LIST
1531     chromaprint
1532     crystalhd
1533     gcrypt
1534     gnutls
1535     jni
1536     ladspa
1537     libass
1538     libbluray
1539     libbs2b
1540     libcaca
1541     libcelt
1542     libdc1394
1543     libflite
1544     libfontconfig
1545     libfreetype
1546     libfribidi
1547     libgme
1548     libgsm
1549     libiec61883
1550     libilbc
1551     libkvazaar
1552     libmodplug
1553     libmp3lame
1554     libnut
1555     libopencv
1556     libopenh264
1557     libopenjpeg
1558     libopenmpt
1559     libopus
1560     libpulse
1561     librtmp
1562     libschroedinger
1563     libshine
1564     libsmbclient
1565     libsnappy
1566     libsoxr
1567     libspeex
1568     libssh
1569     libtesseract
1570     libtheora
1571     libtwolame
1572     libv4l2
1573     libvorbis
1574     libvpx
1575     libwavpack
1576     libwebp
1577     libzimg
1578     libzmq
1579     libzvbi
1580     mediacodec
1581     netcdf
1582     openal
1583     opencl
1584     opengl
1585     videotoolbox
1586 "
1587 HWACCEL_AUTODETECT_LIBRARY_LIST="
1588     audiotoolbox
1589     cuda
1590     cuvid
1591     d3d11va
1592     dxva2
1593     nvenc
1594     vaapi
1595     vda
1596     vdpau
1597     videotoolbox_hwaccel
1598     xvmc
1599 "
1600
1601 HWACCEL_LIBRARY_NONFREE_LIST="
1602     cuda_sdk
1603     libnpp
1604 "
1605
1606 HWACCEL_LIBRARY_LIST="
1607     $HWACCEL_AUTODETECT_LIBRARY_LIST
1608     $HWACCEL_LIBRARY_NONFREE_LIST
1609     libmfx
1610     mmal
1611     omx
1612 "
1613
1614 DOCUMENT_LIST="
1615     doc
1616     htmlpages
1617     manpages
1618     podpages
1619     txtpages
1620 "
1621
1622 FEATURE_LIST="
1623     ftrapv
1624     gray
1625     hardcoded_tables
1626     omx_rpi
1627     runtime_cpudetect
1628     safe_bitstream_reader
1629     shared
1630     small
1631     static
1632     swscale_alpha
1633 "
1634
1635 LIBRARY_LIST="
1636     avcodec
1637     avdevice
1638     avfilter
1639     avformat
1640     avresample
1641     avutil
1642     postproc
1643     swresample
1644     swscale
1645 "
1646
1647 LICENSE_LIST="
1648     gpl
1649     nonfree
1650     version3
1651 "
1652
1653 PROGRAM_LIST="
1654     ffplay
1655     ffprobe
1656     ffserver
1657     ffmpeg
1658 "
1659
1660 SUBSYSTEM_LIST="
1661     dct
1662     dwt
1663     error_resilience
1664     faan
1665     fast_unaligned
1666     fft
1667     lsp
1668     lzo
1669     mdct
1670     pixelutils
1671     network
1672     rdft
1673 "
1674
1675 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1676 CONFIG_LIST="
1677     $DOCUMENT_LIST
1678     $EXAMPLE_LIST
1679     $EXTERNAL_LIBRARY_LIST
1680     $HWACCEL_LIBRARY_LIST
1681     $FEATURE_LIST
1682     $LICENSE_LIST
1683     $LIBRARY_LIST
1684     $PROGRAM_LIST
1685     $SUBSYSTEM_LIST
1686     fontconfig
1687     memory_poisoning
1688     neon_clobber_test
1689     ossfuzz
1690     pic
1691     raise_major
1692     thumb
1693     valgrind_backtrace
1694     xmm_clobber_test
1695     $COMPONENT_LIST
1696 "
1697
1698 THREADS_LIST="
1699     pthreads
1700     os2threads
1701     w32threads
1702 "
1703
1704 ATOMICS_LIST="
1705     atomics_gcc
1706     atomics_suncc
1707     atomics_win32
1708 "
1709
1710 AUTODETECT_LIBS="
1711     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1712     $HWACCEL_AUTODETECT_LIBRARY_LIST
1713     $THREADS_LIST
1714 "
1715
1716 ARCH_LIST="
1717     aarch64
1718     alpha
1719     arm
1720     avr32
1721     avr32_ap
1722     avr32_uc
1723     bfin
1724     ia64
1725     m68k
1726     mips
1727     mips64
1728     parisc
1729     ppc
1730     ppc64
1731     s390
1732     sh4
1733     sparc
1734     sparc64
1735     tilegx
1736     tilepro
1737     tomi
1738     x86
1739     x86_32
1740     x86_64
1741 "
1742
1743 ARCH_EXT_LIST_ARM="
1744     armv5te
1745     armv6
1746     armv6t2
1747     armv8
1748     neon
1749     vfp
1750     vfpv3
1751     setend
1752 "
1753
1754 ARCH_EXT_LIST_MIPS="
1755     mipsfpu
1756     mips32r2
1757     mips32r5
1758     mips64r2
1759     mips32r6
1760     mips64r6
1761     mipsdsp
1762     mipsdspr2
1763     msa
1764 "
1765
1766 ARCH_EXT_LIST_LOONGSON="
1767     loongson2
1768     loongson3
1769     mmi
1770 "
1771
1772 ARCH_EXT_LIST_X86_SIMD="
1773     aesni
1774     amd3dnow
1775     amd3dnowext
1776     avx
1777     avx2
1778     fma3
1779     fma4
1780     mmx
1781     mmxext
1782     sse
1783     sse2
1784     sse3
1785     sse4
1786     sse42
1787     ssse3
1788     xop
1789 "
1790
1791 ARCH_EXT_LIST_PPC="
1792     altivec
1793     dcbzl
1794     ldbrx
1795     power8
1796     ppc4xx
1797     vsx
1798 "
1799
1800 ARCH_EXT_LIST_X86="
1801     $ARCH_EXT_LIST_X86_SIMD
1802     cpunop
1803     i686
1804 "
1805
1806 ARCH_EXT_LIST="
1807     $ARCH_EXT_LIST_ARM
1808     $ARCH_EXT_LIST_PPC
1809     $ARCH_EXT_LIST_X86
1810     $ARCH_EXT_LIST_MIPS
1811     $ARCH_EXT_LIST_LOONGSON
1812 "
1813
1814 ARCH_FEATURES="
1815     aligned_stack
1816     fast_64bit
1817     fast_clz
1818     fast_cmov
1819     local_aligned_8
1820     local_aligned_16
1821     local_aligned_32
1822     simd_align_16
1823     simd_align_32
1824 "
1825
1826 BUILTIN_LIST="
1827     atomic_cas_ptr
1828     machine_rw_barrier
1829     MemoryBarrier
1830     mm_empty
1831     rdtsc
1832     sarestart
1833     sem_timedwait
1834     sync_val_compare_and_swap
1835 "
1836 HAVE_LIST_CMDLINE="
1837     inline_asm
1838     symver
1839     yasm
1840 "
1841
1842 HAVE_LIST_PUB="
1843     bigendian
1844     fast_unaligned
1845 "
1846
1847 HEADERS_LIST="
1848     alsa_asoundlib_h
1849     altivec_h
1850     arpa_inet_h
1851     asm_types_h
1852     cdio_paranoia_h
1853     cdio_paranoia_paranoia_h
1854     cuda_h
1855     d3d11_h
1856     dispatch_dispatch_h
1857     dev_bktr_ioctl_bt848_h
1858     dev_bktr_ioctl_meteor_h
1859     dev_ic_bt8xx_h
1860     dev_video_bktr_ioctl_bt848_h
1861     dev_video_meteor_ioctl_meteor_h
1862     direct_h
1863     dirent_h
1864     dlfcn_h
1865     dxva_h
1866     ES2_gl_h
1867     gsm_h
1868     io_h
1869     mach_mach_time_h
1870     machine_ioctl_bt848_h
1871     machine_ioctl_meteor_h
1872     malloc_h
1873     opencv2_core_core_c_h
1874     openjpeg_2_1_openjpeg_h
1875     openjpeg_2_0_openjpeg_h
1876     openjpeg_1_5_openjpeg_h
1877     OpenGL_gl3_h
1878     poll_h
1879     sndio_h
1880     soundcard_h
1881     stdatomic_h
1882     sys_mman_h
1883     sys_param_h
1884     sys_resource_h
1885     sys_select_h
1886     sys_soundcard_h
1887     sys_time_h
1888     sys_un_h
1889     sys_videoio_h
1890     termios_h
1891     udplite_h
1892     unistd_h
1893     valgrind_valgrind_h
1894     windows_h
1895     winsock2_h
1896 "
1897
1898 INTRINSICS_LIST="
1899     intrinsics_neon
1900 "
1901
1902 COMPLEX_FUNCS="
1903     cabs
1904     cexp
1905 "
1906
1907 MATH_FUNCS="
1908     atanf
1909     atan2f
1910     cbrt
1911     cbrtf
1912     copysign
1913     cosf
1914     erf
1915     exp2
1916     exp2f
1917     expf
1918     hypot
1919     isfinite
1920     isinf
1921     isnan
1922     ldexpf
1923     llrint
1924     llrintf
1925     log2
1926     log2f
1927     log10f
1928     lrint
1929     lrintf
1930     powf
1931     rint
1932     round
1933     roundf
1934     sinf
1935     trunc
1936     truncf
1937 "
1938
1939 SYSTEM_FUNCS="
1940     access
1941     aligned_malloc
1942     arc4random
1943     clock_gettime
1944     closesocket
1945     CommandLineToArgvW
1946     CoTaskMemFree
1947     CryptGenRandom
1948     dlopen
1949     fcntl
1950     flt_lim
1951     fork
1952     getaddrinfo
1953     gethrtime
1954     getopt
1955     GetProcessAffinityMask
1956     GetProcessMemoryInfo
1957     GetProcessTimes
1958     getrusage
1959     GetSystemTimeAsFileTime
1960     gettimeofday
1961     glob
1962     glXGetProcAddress
1963     gmtime_r
1964     inet_aton
1965     isatty
1966     jack_port_get_latency_range
1967     kbhit
1968     LoadLibrary
1969     localtime_r
1970     lstat
1971     lzo1x_999_compress
1972     mach_absolute_time
1973     MapViewOfFile
1974     memalign
1975     mkstemp
1976     mmap
1977     mprotect
1978     nanosleep
1979     PeekNamedPipe
1980     posix_memalign
1981     pthread_cancel
1982     sched_getaffinity
1983     SetConsoleTextAttribute
1984     SetConsoleCtrlHandler
1985     setmode
1986     setrlimit
1987     Sleep
1988     strerror_r
1989     sysconf
1990     sysctl
1991     usleep
1992     UTGetOSTypeFromString
1993     VirtualAlloc
1994     wglGetProcAddress
1995 "
1996
1997 TOOLCHAIN_FEATURES="
1998     as_dn_directive
1999     as_fpu_directive
2000     as_func
2001     as_object_arch
2002     asm_mod_q
2003     attribute_may_alias
2004     attribute_packed
2005     ebp_available
2006     ebx_available
2007     gnu_as
2008     gnu_windres
2009     ibm_asm
2010     inline_asm_direct_symbol_refs
2011     inline_asm_labels
2012     inline_asm_nonlocal_labels
2013     pragma_deprecated
2014     rsync_contimeout
2015     symver_asm_label
2016     symver_gnu_asm
2017     vfp_args
2018     xform_asm
2019     xmm_clobbers
2020 "
2021
2022 TYPES_LIST="
2023     CONDITION_VARIABLE_Ptr
2024     socklen_t
2025     struct_addrinfo
2026     struct_group_source_req
2027     struct_ip_mreq_source
2028     struct_ipv6_mreq
2029     struct_msghdr_msg_flags
2030     struct_pollfd
2031     struct_rusage_ru_maxrss
2032     struct_sctp_event_subscribe
2033     struct_sockaddr_in6
2034     struct_sockaddr_sa_len
2035     struct_sockaddr_storage
2036     struct_stat_st_mtim_tv_nsec
2037     struct_v4l2_frmivalenum_discrete
2038 "
2039
2040 HAVE_LIST="
2041     $ARCH_EXT_LIST
2042     $(add_suffix _external $ARCH_EXT_LIST)
2043     $(add_suffix _inline   $ARCH_EXT_LIST)
2044     $ARCH_FEATURES
2045     $ATOMICS_LIST
2046     $BUILTIN_LIST
2047     $COMPLEX_FUNCS
2048     $HAVE_LIST_CMDLINE
2049     $HAVE_LIST_PUB
2050     $HEADERS_LIST
2051     $INTRINSICS_LIST
2052     $MATH_FUNCS
2053     $SYSTEM_FUNCS
2054     $THREADS_LIST
2055     $TOOLCHAIN_FEATURES
2056     $TYPES_LIST
2057     alsa
2058     atomics_native
2059     dos_paths
2060     dxva2_lib
2061     dxva2api_cobj
2062     jack
2063     libc_msvcrt
2064     makeinfo
2065     makeinfo_html
2066     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2067     perl
2068     pod2man
2069     sdl2
2070     section_data_rel_ro
2071     sndio
2072     texi2html
2073     threads
2074     vaapi_drm
2075     vaapi_x11
2076     vdpau_x11
2077     winrt
2078 "
2079
2080 # options emitted with CONFIG_ prefix but not available on the command line
2081 CONFIG_EXTRA="
2082     aandcttables
2083     ac3dsp
2084     audio_frame_queue
2085     audiodsp
2086     blockdsp
2087     bswapdsp
2088     cabac
2089     dirac_parse
2090     dvprofile
2091     exif
2092     faandct
2093     faanidct
2094     fdctdsp
2095     flacdsp
2096     fmtconvert
2097     frame_thread_encoder
2098     g722dsp
2099     golomb
2100     gplv3
2101     h263dsp
2102     h264chroma
2103     h264dsp
2104     h264parse
2105     h264pred
2106     h264qpel
2107     hevcparse
2108     hpeldsp
2109     huffman
2110     huffyuvdsp
2111     huffyuvencdsp
2112     idctdsp
2113     iirfilter
2114     mdct15
2115     intrax8
2116     iso_media
2117     ividsp
2118     jpegtables
2119     lgplv3
2120     libx262
2121     llauddsp
2122     llviddsp
2123     llvidencdsp
2124     lpc
2125     lzf
2126     me_cmp
2127     mpeg_er
2128     mpegaudio
2129     mpegaudiodsp
2130     mpegaudioheader
2131     mpegvideo
2132     mpegvideoenc
2133     mss34dsp
2134     pixblockdsp
2135     qpeldsp
2136     qsv
2137     qsvdec
2138     qsvenc
2139     rangecoder
2140     riffdec
2141     riffenc
2142     rtpdec
2143     rtpenc_chain
2144     rv34dsp
2145     sinewin
2146     snappy
2147     srtp
2148     startcode
2149     texturedsp
2150     texturedspenc
2151     tpeldsp
2152     vaapi_encode
2153     vc1dsp
2154     videodsp
2155     vp3dsp
2156     vp56dsp
2157     vp8dsp
2158     vt_bt2020
2159     wma_freqs
2160     wmv2dsp
2161 "
2162
2163 CMDLINE_SELECT="
2164     $ARCH_EXT_LIST
2165     $CONFIG_LIST
2166     $HAVE_LIST_CMDLINE
2167     $THREADS_LIST
2168     asm
2169     cross_compile
2170     debug
2171     extra_warnings
2172     logging
2173     lto
2174     optimizations
2175     rpath
2176     stripping
2177 "
2178
2179 PATHS_LIST="
2180     bindir
2181     datadir
2182     docdir
2183     incdir
2184     libdir
2185     mandir
2186     pkgconfigdir
2187     prefix
2188     shlibdir
2189     install_name_dir
2190 "
2191
2192 CMDLINE_SET="
2193     $PATHS_LIST
2194     ar
2195     arch
2196     as
2197     assert_level
2198     build_suffix
2199     cc
2200     objcc
2201     cpu
2202     cross_prefix
2203     custom_allocator
2204     cxx
2205     dep_cc
2206     doxygen
2207     env
2208     extra_version
2209     gas
2210     host_cc
2211     host_cflags
2212     host_extralibs
2213     host_ld
2214     host_ldflags
2215     host_os
2216     ignore_tests
2217     install
2218     ld
2219     ln_s
2220     logfile
2221     malloc_prefix
2222     nm
2223     optflags
2224     pkg_config
2225     pkg_config_flags
2226     progs_suffix
2227     random_seed
2228     ranlib
2229     samples
2230     strip
2231     sws_max_filter_size
2232     sysinclude
2233     sysroot
2234     target_exec
2235     target_os
2236     target_path
2237     target_samples
2238     tempprefix
2239     toolchain
2240     valgrind
2241     yasmexe
2242 "
2243
2244 CMDLINE_APPEND="
2245     extra_cflags
2246     extra_cxxflags
2247     extra_objcflags
2248     host_cppflags
2249 "
2250
2251 # code dependency declarations
2252
2253 # architecture extensions
2254
2255 armv5te_deps="arm"
2256 armv6_deps="arm"
2257 armv6t2_deps="arm"
2258 armv8_deps="aarch64"
2259 neon_deps_any="aarch64 arm"
2260 intrinsics_neon_deps="neon"
2261 vfp_deps_any="aarch64 arm"
2262 vfpv3_deps="vfp"
2263 setend_deps="arm"
2264
2265 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2266
2267 loongson2_deps="mips"
2268 loongson3_deps="mips"
2269 mipsfpu_deps="mips"
2270 mipsdsp_deps="mips"
2271 mipsdspr2_deps="mips"
2272 mips32r2_deps="mips"
2273 mips32r5_deps="mips"
2274 mips32r6_deps="mips"
2275 mips64r2_deps="mips"
2276 mips64r6_deps="mips"
2277 msa_deps="mipsfpu"
2278 mmi_deps="mips"
2279
2280 altivec_deps="ppc"
2281 dcbzl_deps="ppc"
2282 ldbrx_deps="ppc"
2283 ppc4xx_deps="ppc"
2284 vsx_deps="altivec"
2285 power8_deps="vsx"
2286
2287 cpunop_deps="i686"
2288 x86_64_select="i686"
2289 x86_64_suggest="fast_cmov"
2290
2291 amd3dnow_deps="mmx"
2292 amd3dnowext_deps="amd3dnow"
2293 i686_deps="x86"
2294 mmx_deps="x86"
2295 mmxext_deps="mmx"
2296 sse_deps="mmxext"
2297 sse2_deps="sse"
2298 sse3_deps="sse2"
2299 ssse3_deps="sse3"
2300 sse4_deps="ssse3"
2301 sse42_deps="sse4"
2302 aesni_deps="sse42"
2303 avx_deps="sse42"
2304 xop_deps="avx"
2305 fma3_deps="avx"
2306 fma4_deps="avx"
2307 avx2_deps="avx"
2308
2309 mmx_external_deps="yasm"
2310 mmx_inline_deps="inline_asm"
2311 mmx_suggest="mmx_external mmx_inline"
2312
2313 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2314     eval dep=\$${ext}_deps
2315     eval ${ext}_external_deps='"${dep}_external"'
2316     eval ${ext}_inline_deps='"${dep}_inline"'
2317     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2318 done
2319
2320 aligned_stack_if_any="aarch64 ppc x86"
2321 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2322 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2323 fast_unaligned_if_any="aarch64 ppc x86"
2324 simd_align_16_if_any="altivec neon sse"
2325 simd_align_32_if_any="avx"
2326
2327 # system capabilities
2328 symver_if_any="symver_asm_label symver_gnu_asm"
2329 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2330
2331 # threading support
2332 atomics_gcc_if="sync_val_compare_and_swap"
2333 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2334 atomics_win32_if="MemoryBarrier"
2335 atomics_native_if_any="$ATOMICS_LIST"
2336 w32threads_deps="atomics_native"
2337 threads_if_any="$THREADS_LIST"
2338
2339 # subsystems
2340 dct_select="rdft"
2341 dirac_parse_select="golomb"
2342 error_resilience_select="me_cmp"
2343 faandct_deps="faan fdctdsp"
2344 faanidct_deps="faan idctdsp"
2345 h264dsp_select="startcode"
2346 hevcparse_select="golomb"
2347 frame_thread_encoder_deps="encoders threads"
2348 intrax8_select="blockdsp idctdsp"
2349 mdct_select="fft"
2350 mdct15_select="fft"
2351 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2352 mpeg_er_select="error_resilience"
2353 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2354 mpegaudiodsp_select="dct"
2355 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2356 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2357 vc1dsp_select="h264chroma qpeldsp startcode"
2358 rdft_select="fft"
2359
2360 # decoders / encoders
2361 aac_decoder_select="mdct15 mdct sinewin"
2362 aac_fixed_decoder_select="mdct sinewin"
2363 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2364 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2365 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2366 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2367 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2368 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2369 adpcm_g722_decoder_select="g722dsp"
2370 adpcm_g722_encoder_select="g722dsp"
2371 aic_decoder_select="golomb idctdsp"
2372 alac_encoder_select="lpc"
2373 als_decoder_select="bswapdsp"
2374 amrnb_decoder_select="lsp"
2375 amrwb_decoder_select="lsp"
2376 amv_decoder_select="sp5x_decoder exif"
2377 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2378 ape_decoder_select="bswapdsp llauddsp"
2379 apng_decoder_select="zlib"
2380 apng_encoder_select="llvidencdsp zlib"
2381 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2382 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2383 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2384 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2385 atrac1_decoder_select="mdct sinewin"
2386 atrac3_decoder_select="mdct"
2387 atrac3p_decoder_select="mdct sinewin"
2388 avrn_decoder_select="exif jpegtables"
2389 bink_decoder_select="blockdsp hpeldsp"
2390 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2391 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2392 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2393 cllc_decoder_select="bswapdsp"
2394 comfortnoise_encoder_select="lpc"
2395 cook_decoder_select="audiodsp mdct sinewin"
2396 cscd_decoder_select="lzo"
2397 cscd_decoder_suggest="zlib"
2398 dca_decoder_select="mdct"
2399 dds_decoder_select="texturedsp"
2400 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2401 dnxhd_decoder_select="blockdsp idctdsp"
2402 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2403 dvvideo_decoder_select="dvprofile idctdsp"
2404 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2405 dxa_decoder_select="zlib"
2406 dxv_decoder_select="lzf texturedsp"
2407 eac3_decoder_select="ac3_decoder"
2408 eac3_encoder_select="ac3_encoder"
2409 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2410 eatgq_decoder_select="aandcttables"
2411 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2412 exr_decoder_select="zlib"
2413 ffv1_decoder_select="rangecoder"
2414 ffv1_encoder_select="rangecoder"
2415 ffvhuff_decoder_select="huffyuv_decoder"
2416 ffvhuff_encoder_select="huffyuv_encoder"
2417 fic_decoder_select="golomb"
2418 flac_decoder_select="flacdsp"
2419 flac_encoder_select="bswapdsp flacdsp lpc"
2420 flashsv2_decoder_select="zlib"
2421 flashsv2_encoder_select="zlib"
2422 flashsv_decoder_select="zlib"
2423 flashsv_encoder_select="zlib"
2424 flv_decoder_select="h263_decoder"
2425 flv_encoder_select="h263_encoder"
2426 fourxm_decoder_select="blockdsp bswapdsp"
2427 fraps_decoder_select="bswapdsp huffman"
2428 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2429 g729_decoder_select="audiodsp"
2430 h261_decoder_select="mpegvideo"
2431 h261_encoder_select="aandcttables mpegvideoenc"
2432 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2433 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2434 h263i_decoder_select="h263_decoder"
2435 h263p_decoder_select="h263_decoder"
2436 h263p_encoder_select="h263_encoder"
2437 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2438 h264_decoder_suggest="error_resilience"
2439 hap_decoder_select="snappy texturedsp"
2440 hap_encoder_deps="libsnappy"
2441 hap_encoder_select="texturedspenc"
2442 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2443 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2444 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2445 iac_decoder_select="imc_decoder"
2446 imc_decoder_select="bswapdsp fft mdct sinewin"
2447 indeo3_decoder_select="hpeldsp"
2448 indeo4_decoder_select="ividsp"
2449 indeo5_decoder_select="ividsp"
2450 interplay_video_decoder_select="hpeldsp"
2451 jpegls_decoder_select="mjpeg_decoder"
2452 jv_decoder_select="blockdsp"
2453 lagarith_decoder_select="llviddsp"
2454 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2455 magicyuv_decoder_select="llviddsp"
2456 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2457 metasound_decoder_select="lsp mdct sinewin"
2458 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2459 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2460 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2461 mjpegb_decoder_select="mjpeg_decoder"
2462 mlp_decoder_select="mlp_parser"
2463 mlp_encoder_select="lpc"
2464 motionpixels_decoder_select="bswapdsp"
2465 mp1_decoder_select="mpegaudio"
2466 mp1float_decoder_select="mpegaudio"
2467 mp2_decoder_select="mpegaudio"
2468 mp2float_decoder_select="mpegaudio"
2469 mp3_decoder_select="mpegaudio"
2470 mp3adu_decoder_select="mpegaudio"
2471 mp3adufloat_decoder_select="mpegaudio"
2472 mp3float_decoder_select="mpegaudio"
2473 mp3on4_decoder_select="mpegaudio"
2474 mp3on4float_decoder_select="mpegaudio"
2475 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2476 mpc8_decoder_select="mpegaudiodsp"
2477 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2478 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2479 mpegvideo_decoder_select="mpegvideo"
2480 mpeg1video_decoder_select="mpegvideo"
2481 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2482 mpeg2video_decoder_select="mpegvideo"
2483 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2484 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2485 mpeg4_encoder_select="h263_encoder"
2486 msa1_decoder_select="mss34dsp"
2487 mscc_decoder_select="zlib"
2488 msmpeg4v1_decoder_select="h263_decoder"
2489 msmpeg4v2_decoder_select="h263_decoder"
2490 msmpeg4v2_encoder_select="h263_encoder"
2491 msmpeg4v3_decoder_select="h263_decoder"
2492 msmpeg4v3_encoder_select="h263_encoder"
2493 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2494 mts2_decoder_select="mss34dsp"
2495 mxpeg_decoder_select="mjpeg_decoder"
2496 nellymoser_decoder_select="mdct sinewin"
2497 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2498 nuv_decoder_select="idctdsp lzo"
2499 on2avc_decoder_select="mdct"
2500 opus_decoder_deps="swresample"
2501 opus_decoder_select="mdct15"
2502 opus_encoder_select="audio_frame_queue mdct15"
2503 png_decoder_select="zlib"
2504 png_encoder_select="llvidencdsp zlib"
2505 prores_decoder_select="blockdsp idctdsp"
2506 prores_encoder_select="fdctdsp"
2507 qcelp_decoder_select="lsp"
2508 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2509 ra_144_decoder_select="audiodsp"
2510 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2511 ralf_decoder_select="golomb"
2512 rawvideo_decoder_select="bswapdsp"
2513 rscc_decoder_select="zlib"
2514 rtjpeg_decoder_select="me_cmp"
2515 rv10_decoder_select="h263_decoder"
2516 rv10_encoder_select="h263_encoder"
2517 rv20_decoder_select="h263_decoder"
2518 rv20_encoder_select="h263_encoder"
2519 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2520 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2521 screenpresso_decoder_select="zlib"
2522 shorten_decoder_select="bswapdsp"
2523 sipr_decoder_select="lsp"
2524 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2525 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2526 sonic_decoder_select="golomb rangecoder"
2527 sonic_encoder_select="golomb rangecoder"
2528 sonic_ls_encoder_select="golomb rangecoder"
2529 sp5x_decoder_select="mjpeg_decoder"
2530 srgc_decoder_select="zlib"
2531 svq1_decoder_select="hpeldsp"
2532 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2533 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2534 svq3_decoder_suggest="zlib"
2535 tak_decoder_select="audiodsp"
2536 tdsc_decoder_select="zlib mjpeg_decoder"
2537 theora_decoder_select="vp3_decoder"
2538 thp_decoder_select="mjpeg_decoder"
2539 tiff_decoder_suggest="zlib lzma"
2540 tiff_encoder_suggest="zlib"
2541 truehd_decoder_select="mlp_parser"
2542 truehd_encoder_select="lpc"
2543 truemotion2_decoder_select="bswapdsp"
2544 truespeech_decoder_select="bswapdsp"
2545 tscc_decoder_select="zlib"
2546 twinvq_decoder_select="mdct lsp sinewin"
2547 txd_decoder_select="texturedsp"
2548 utvideo_decoder_select="bswapdsp llviddsp"
2549 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2550 vble_decoder_select="llviddsp"
2551 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2552 vc1_qsv_decoder_deps="libmfx"
2553 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2554 vc1image_decoder_select="vc1_decoder"
2555 vorbis_decoder_select="mdct"
2556 vorbis_encoder_select="mdct"
2557 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2558 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2559 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2560 vp6a_decoder_select="vp6_decoder"
2561 vp6f_decoder_select="vp6_decoder"
2562 vp7_decoder_select="h264pred videodsp vp8dsp"
2563 vp8_decoder_select="h264pred videodsp vp8dsp"
2564 vp9_decoder_select="videodsp vp9_parser"
2565 webp_decoder_select="vp8_decoder exif"
2566 wmalossless_decoder_select="llauddsp"
2567 wmapro_decoder_select="mdct sinewin wma_freqs"
2568 wmav1_decoder_select="mdct sinewin wma_freqs"
2569 wmav1_encoder_select="mdct sinewin wma_freqs"
2570 wmav2_decoder_select="mdct sinewin wma_freqs"
2571 wmav2_encoder_select="mdct sinewin wma_freqs"
2572 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2573 wmv1_decoder_select="h263_decoder"
2574 wmv1_encoder_select="h263_encoder"
2575 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2576 wmv2_encoder_select="h263_encoder wmv2dsp"
2577 wmv3_decoder_select="vc1_decoder"
2578 wmv3image_decoder_select="wmv3_decoder"
2579 xma1_decoder_select="wmapro_decoder"
2580 xma2_decoder_select="wmapro_decoder"
2581 zerocodec_decoder_select="zlib"
2582 zlib_decoder_select="zlib"
2583 zlib_encoder_select="zlib"
2584 zmbv_decoder_select="zlib"
2585 zmbv_encoder_select="zlib"
2586
2587 # platform codecs
2588 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2589 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2590
2591 # hardware accelerators
2592 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2593 cuda_deps_any="dlopen LoadLibrary"
2594 cuvid_deps="cuda"
2595 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2596 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2597 dxva2_extralibs="-luser32"
2598 dxva2_lib_deps="dxva2"
2599 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2600 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2601 vda_deps="vda_framework pthreads"
2602 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2603 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2604 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2605 xvmc_deps="X11_extensions_XvMClib_h"
2606
2607 h263_vaapi_hwaccel_deps="vaapi"
2608 h263_vaapi_hwaccel_select="h263_decoder"
2609 h263_videotoolbox_hwaccel_deps="videotoolbox"
2610 h263_videotoolbox_hwaccel_select="h263_decoder"
2611 h264_cuvid_hwaccel_deps="cuda cuvid"
2612 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2613 h264_d3d11va_hwaccel_deps="d3d11va"
2614 h264_d3d11va_hwaccel_select="h264_decoder"
2615 h264_dxva2_hwaccel_deps="dxva2"
2616 h264_dxva2_hwaccel_select="h264_decoder"
2617 h264_mediacodec_hwaccel_deps="mediacodec"
2618 h264_mmal_hwaccel_deps="mmal"
2619 h264_qsv_hwaccel_deps="libmfx"
2620 h264_vaapi_hwaccel_deps="vaapi"
2621 h264_vaapi_hwaccel_select="h264_decoder"
2622 h264_vda_hwaccel_deps="vda"
2623 h264_vda_hwaccel_select="h264_decoder"
2624 h264_vda_old_hwaccel_deps="vda"
2625 h264_vda_old_hwaccel_select="h264_decoder"
2626 h264_vdpau_hwaccel_deps="vdpau"
2627 h264_vdpau_hwaccel_select="h264_decoder"
2628 h264_videotoolbox_hwaccel_deps="videotoolbox"
2629 h264_videotoolbox_hwaccel_select="h264_decoder"
2630 hevc_cuvid_hwaccel_deps="cuda cuvid"
2631 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2632 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2633 hevc_d3d11va_hwaccel_select="hevc_decoder"
2634 hevc_mediacodec_hwaccel_deps="mediacodec"
2635 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2636 hevc_dxva2_hwaccel_select="hevc_decoder"
2637 hevc_qsv_hwaccel_deps="libmfx"
2638 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2639 hevc_vaapi_hwaccel_select="hevc_decoder"
2640 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2641 hevc_vdpau_hwaccel_select="hevc_decoder"
2642 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2643 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2644 mpeg_xvmc_hwaccel_deps="xvmc"
2645 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2646 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2647 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2648 mpeg1_vdpau_hwaccel_deps="vdpau"
2649 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2650 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2651 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2652 mpeg1_xvmc_hwaccel_deps="xvmc"
2653 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2654 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2655 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2656 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2657 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2658 mpeg2_dxva2_hwaccel_deps="dxva2"
2659 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2660 mpeg2_mmal_hwaccel_deps="mmal"
2661 mpeg2_qsv_hwaccel_deps="libmfx"
2662 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2663 mpeg2_vaapi_hwaccel_deps="vaapi"
2664 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2665 mpeg2_vdpau_hwaccel_deps="vdpau"
2666 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2667 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2668 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2669 mpeg2_xvmc_hwaccel_deps="xvmc"
2670 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2671 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2672 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2673 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2674 mpeg4_mmal_hwaccel_deps="mmal"
2675 mpeg4_vaapi_hwaccel_deps="vaapi"
2676 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2677 mpeg4_vdpau_hwaccel_deps="vdpau"
2678 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2679 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2680 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2681 vc1_cuvid_hwaccel_deps="cuda cuvid"
2682 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2683 vc1_d3d11va_hwaccel_deps="d3d11va"
2684 vc1_d3d11va_hwaccel_select="vc1_decoder"
2685 vc1_dxva2_hwaccel_deps="dxva2"
2686 vc1_dxva2_hwaccel_select="vc1_decoder"
2687 vc1_mmal_hwaccel_deps="mmal"
2688 vc1_qsv_hwaccel_deps="libmfx"
2689 vc1_qsv_hwaccel_select="qsvdec_vc1"
2690 vc1_vaapi_hwaccel_deps="vaapi"
2691 vc1_vaapi_hwaccel_select="vc1_decoder"
2692 vc1_vdpau_hwaccel_deps="vdpau"
2693 vc1_vdpau_hwaccel_select="vc1_decoder"
2694 vp8_cuvid_hwaccel_deps="cuda cuvid"
2695 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2696 vp9_cuvid_hwaccel_deps="cuda cuvid"
2697 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2698 vp8_mediacodec_hwaccel_deps="mediacodec"
2699 vp8_qsv_hwaccel_deps="libmfx"
2700 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2701 vp9_d3d11va_hwaccel_select="vp9_decoder"
2702 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2703 vp9_dxva2_hwaccel_select="vp9_decoder"
2704 vp9_mediacodec_hwaccel_deps="mediacodec"
2705 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2706 vp9_vaapi_hwaccel_select="vp9_decoder"
2707 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2708 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2709 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2710 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2711
2712 # hardware-accelerated codecs
2713 omx_deps="dlopen pthreads"
2714 omx_extralibs='$ldl'
2715 omx_rpi_select="omx"
2716 qsvdec_select="qsv"
2717 qsvenc_select="qsv"
2718 vaapi_encode_deps="vaapi"
2719
2720 hwupload_cuda_filter_deps="cuda"
2721 scale_npp_filter_deps="cuda_sdk libnpp"
2722
2723 nvenc_deps="cuda"
2724 nvenc_deps_any="dlopen LoadLibrary"
2725 nvenc_encoder_deps="nvenc"
2726
2727 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2728 h264_cuvid_decoder_deps="cuda cuvid"
2729 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2730 h264_mediacodec_decoder_deps="mediacodec"
2731 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2732 h264_mmal_decoder_deps="mmal"
2733 h264_nvenc_encoder_deps="nvenc"
2734 h264_omx_encoder_deps="omx"
2735 h264_qsv_decoder_deps="libmfx"
2736 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2737 h264_qsv_encoder_deps="libmfx"
2738 h264_qsv_encoder_select="qsvenc"
2739 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2740 h264_vaapi_encoder_select="vaapi_encode golomb"
2741 h264_vda_decoder_deps="vda"
2742 h264_vda_decoder_select="h264_decoder"
2743 h264_vdpau_decoder_deps="vdpau"
2744 h264_vdpau_decoder_select="h264_decoder"
2745 hevc_cuvid_decoder_deps="cuda cuvid"
2746 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2747 hevc_mediacodec_decoder_deps="mediacodec"
2748 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2749 hevc_nvenc_encoder_deps="nvenc"
2750 hevc_qsv_decoder_deps="libmfx"
2751 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2752 hevc_qsv_encoder_deps="libmfx"
2753 hevc_qsv_encoder_select="hevcparse qsvenc"
2754 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2755 hevc_vaapi_encoder_select="vaapi_encode golomb"
2756 mjpeg_cuvid_decoder_deps="cuda cuvid"
2757 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2758 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2759 mpeg1_cuvid_decoder_deps="cuda cuvid"
2760 mpeg1_vdpau_decoder_deps="vdpau"
2761 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2762 mpeg2_crystalhd_decoder_select="crystalhd"
2763 mpeg2_cuvid_decoder_deps="cuda cuvid"
2764 mpeg2_mmal_decoder_deps="mmal"
2765 mpeg2_qsv_decoder_deps="libmfx"
2766 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2767 mpeg2_qsv_encoder_deps="libmfx"
2768 mpeg2_qsv_encoder_select="qsvenc"
2769 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2770 mpeg2_vaapi_encoder_select="vaapi_encode"
2771 mpeg4_crystalhd_decoder_select="crystalhd"
2772 mpeg4_cuvid_decoder_deps="cuda cuvid"
2773 mpeg4_mediacodec_decoder_deps="mediacodec"
2774 mpeg4_mmal_decoder_deps="mmal"
2775 mpeg4_omx_encoder_deps="omx"
2776 mpeg4_vdpau_decoder_deps="vdpau"
2777 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2778 mpeg_vdpau_decoder_deps="vdpau"
2779 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2780 msmpeg4_crystalhd_decoder_select="crystalhd"
2781 nvenc_h264_encoder_select="h264_nvenc_encoder"
2782 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2783 vc1_crystalhd_decoder_select="crystalhd"
2784 vc1_cuvid_decoder_deps="cuda cuvid"
2785 vc1_mmal_decoder_deps="mmal"
2786 vc1_vdpau_decoder_deps="vdpau"
2787 vc1_vdpau_decoder_select="vc1_decoder"
2788 vp8_cuvid_decoder_deps="cuda cuvid"
2789 vp8_mediacodec_decoder_deps="mediacodec"
2790 vp8_qsv_decoder_deps="libmfx"
2791 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2792 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2793 vp8_vaapi_encoder_select="vaapi_encode"
2794 vp9_cuvid_decoder_deps="cuda cuvid"
2795 vp9_mediacodec_decoder_deps="mediacodec"
2796 wmv3_crystalhd_decoder_select="crystalhd"
2797 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2798
2799 # parsers
2800 h264_parser_select="golomb h264dsp h264parse"
2801 hevc_parser_select="hevcparse"
2802 mpegaudio_parser_select="mpegaudioheader"
2803 mpegvideo_parser_select="mpegvideo"
2804 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2805 vc1_parser_select="vc1dsp"
2806
2807 # bitstream_filters
2808 mjpeg2jpeg_bsf_select="jpegtables"
2809
2810 # external libraries
2811 aac_at_decoder_deps="audiotoolbox"
2812 ac3_at_decoder_deps="audiotoolbox"
2813 ac3_at_decoder_select="ac3_parser"
2814 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2815 alac_at_decoder_deps="audiotoolbox"
2816 amr_nb_at_decoder_deps="audiotoolbox"
2817 avisynth_deps_any="dlopen LoadLibrary"
2818 avisynth_demuxer_deps="avisynth"
2819 avisynth_demuxer_select="riffdec"
2820 eac3_at_decoder_deps="audiotoolbox"
2821 eac3_at_decoder_select="ac3_parser"
2822 gsm_ms_at_decoder_deps="audiotoolbox"
2823 ilbc_at_decoder_deps="audiotoolbox"
2824 mp1_at_decoder_deps="audiotoolbox"
2825 mp2_at_decoder_deps="audiotoolbox"
2826 mp3_at_decoder_deps="audiotoolbox"
2827 mp1_at_decoder_select="mpegaudioheader"
2828 mp2_at_decoder_select="mpegaudioheader"
2829 mp3_at_decoder_select="mpegaudioheader"
2830 pcm_alaw_at_decoder_deps="audiotoolbox"
2831 pcm_mulaw_at_decoder_deps="audiotoolbox"
2832 qdmc_at_decoder_deps="audiotoolbox"
2833 qdm2_at_decoder_deps="audiotoolbox"
2834 aac_at_encoder_deps="audiotoolbox"
2835 aac_at_encoder_select="audio_frame_queue"
2836 alac_at_encoder_deps="audiotoolbox"
2837 alac_at_encoder_select="audio_frame_queue"
2838 ilbc_at_encoder_deps="audiotoolbox"
2839 ilbc_at_encoder_select="audio_frame_queue"
2840 pcm_alaw_at_encoder_deps="audiotoolbox"
2841 pcm_alaw_at_encoder_select="audio_frame_queue"
2842 pcm_mulaw_at_encoder_deps="audiotoolbox"
2843 pcm_mulaw_at_encoder_select="audio_frame_queue"
2844 chromaprint_muxer_deps="chromaprint"
2845 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2846 libcelt_decoder_deps="libcelt"
2847 libfdk_aac_decoder_deps="libfdk_aac"
2848 libfdk_aac_encoder_deps="libfdk_aac"
2849 libfdk_aac_encoder_select="audio_frame_queue"
2850 libgme_demuxer_deps="libgme"
2851 libgsm_decoder_deps="libgsm"
2852 libgsm_encoder_deps="libgsm"
2853 libgsm_ms_decoder_deps="libgsm"
2854 libgsm_ms_encoder_deps="libgsm"
2855 libilbc_decoder_deps="libilbc"
2856 libilbc_encoder_deps="libilbc"
2857 libkvazaar_encoder_deps="libkvazaar"
2858 libmodplug_demuxer_deps="libmodplug"
2859 libmp3lame_encoder_deps="libmp3lame"
2860 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2861 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2862 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2863 libopencore_amrnb_encoder_select="audio_frame_queue"
2864 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2865 libopenh264_decoder_deps="libopenh264"
2866 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2867 libopenh264_encoder_deps="libopenh264"
2868 libopenjpeg_decoder_deps="libopenjpeg"
2869 libopenjpeg_encoder_deps="libopenjpeg"
2870 libopenmpt_demuxer_deps="libopenmpt"
2871 libopus_decoder_deps="libopus"
2872 libopus_encoder_deps="libopus"
2873 libopus_encoder_select="audio_frame_queue"
2874 libschroedinger_decoder_deps="libschroedinger"
2875 libschroedinger_encoder_deps="libschroedinger"
2876 libshine_encoder_deps="libshine"
2877 libshine_encoder_select="audio_frame_queue"
2878 libspeex_decoder_deps="libspeex"
2879 libspeex_encoder_deps="libspeex"
2880 libspeex_encoder_select="audio_frame_queue"
2881 libtheora_encoder_deps="libtheora"
2882 libtwolame_encoder_deps="libtwolame"
2883 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2884 libvorbis_decoder_deps="libvorbis"
2885 libvorbis_encoder_deps="libvorbis"
2886 libvorbis_encoder_select="audio_frame_queue"
2887 libvpx_vp8_decoder_deps="libvpx"
2888 libvpx_vp8_encoder_deps="libvpx"
2889 libvpx_vp9_decoder_deps="libvpx"
2890 libvpx_vp9_encoder_deps="libvpx"
2891 libwavpack_encoder_deps="libwavpack"
2892 libwavpack_encoder_select="audio_frame_queue"
2893 libwebp_encoder_deps="libwebp"
2894 libwebp_anim_encoder_deps="libwebp"
2895 libx262_encoder_deps="libx262"
2896 libx264_encoder_deps="libx264"
2897 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2898 libx264rgb_encoder_select="libx264_encoder"
2899 libx265_encoder_deps="libx265"
2900 libxavs_encoder_deps="libxavs"
2901 libxvid_encoder_deps="libxvid"
2902 libzvbi_teletext_decoder_deps="libzvbi"
2903 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2904 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2905 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2906 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2907 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2908
2909 # demuxers / muxers
2910 ac3_demuxer_select="ac3_parser"
2911 aiff_muxer_select="iso_media"
2912 asf_demuxer_select="riffdec"
2913 asf_o_demuxer_select="riffdec"
2914 asf_muxer_select="riffenc"
2915 asf_stream_muxer_select="asf_muxer"
2916 avi_demuxer_select="iso_media riffdec exif"
2917 avi_muxer_select="riffenc"
2918 caf_demuxer_select="iso_media riffdec"
2919 caf_muxer_select="iso_media"
2920 dash_muxer_select="mp4_muxer"
2921 dirac_demuxer_select="dirac_parser"
2922 dts_demuxer_select="dca_parser"
2923 dtshd_demuxer_select="dca_parser"
2924 dv_demuxer_select="dvprofile"
2925 dv_muxer_select="dvprofile"
2926 dxa_demuxer_select="riffdec"
2927 eac3_demuxer_select="ac3_parser"
2928 f4v_muxer_select="mov_muxer"
2929 fifo_muxer_deps="threads"
2930 flac_demuxer_select="flac_parser"
2931 hds_muxer_select="flv_muxer"
2932 hls_muxer_select="mpegts_muxer"
2933 image2_alias_pix_demuxer_select="image2_demuxer"
2934 image2_brender_pix_demuxer_select="image2_demuxer"
2935 ipod_muxer_select="mov_muxer"
2936 ismv_muxer_select="mov_muxer"
2937 libnut_demuxer_deps="libnut"
2938 libnut_muxer_deps="libnut"
2939 matroska_audio_muxer_select="matroska_muxer"
2940 matroska_demuxer_select="iso_media riffdec"
2941 matroska_demuxer_suggest="bzlib lzo zlib"
2942 matroska_muxer_select="iso_media riffenc"
2943 mmf_muxer_select="riffenc"
2944 mov_demuxer_select="iso_media riffdec"
2945 mov_demuxer_suggest="zlib"
2946 mov_muxer_select="iso_media riffenc rtpenc_chain"
2947 mp3_demuxer_select="mpegaudio_parser"
2948 mp3_muxer_select="mpegaudioheader"
2949 mp4_muxer_select="mov_muxer"
2950 mpegts_demuxer_select="iso_media"
2951 mpegts_muxer_select="adts_muxer latm_muxer"
2952 mpegtsraw_demuxer_select="mpegts_demuxer"
2953 mxf_d10_muxer_select="mxf_muxer"
2954 mxf_opatom_muxer_select="mxf_muxer"
2955 nut_muxer_select="riffenc"
2956 nuv_demuxer_select="riffdec"
2957 oga_muxer_select="ogg_muxer"
2958 ogg_demuxer_select="dirac_parse"
2959 ogv_muxer_select="ogg_muxer"
2960 opus_muxer_select="ogg_muxer"
2961 psp_muxer_select="mov_muxer"
2962 rtp_demuxer_select="sdp_demuxer"
2963 rtp_muxer_select="golomb"
2964 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2965 rtsp_demuxer_select="http_protocol rtpdec"
2966 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2967 sap_demuxer_select="sdp_demuxer"
2968 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2969 sdp_demuxer_select="rtpdec"
2970 smoothstreaming_muxer_select="ismv_muxer"
2971 spdif_muxer_select="aac_parser"
2972 spx_muxer_select="ogg_muxer"
2973 swf_demuxer_suggest="zlib"
2974 tak_demuxer_select="tak_parser"
2975 tg2_muxer_select="mov_muxer"
2976 tgp_muxer_select="mov_muxer"
2977 vobsub_demuxer_select="mpegps_demuxer"
2978 w64_demuxer_select="wav_demuxer"
2979 w64_muxer_select="wav_muxer"
2980 wav_demuxer_select="riffdec"
2981 wav_muxer_select="riffenc"
2982 webm_muxer_select="iso_media riffenc"
2983 webm_dash_manifest_demuxer_select="matroska_demuxer"
2984 wtv_demuxer_select="mpegts_demuxer riffdec"
2985 wtv_muxer_select="mpegts_muxer riffenc"
2986 xmv_demuxer_select="riffdec"
2987 xwma_demuxer_select="riffdec"
2988
2989 # indevs / outdevs
2990 alsa_indev_deps="alsa"
2991 alsa_outdev_deps="alsa"
2992 avfoundation_indev_deps="pthreads"
2993 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2994 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2995 caca_outdev_deps="libcaca"
2996 decklink_indev_deps="decklink threads"
2997 decklink_indev_extralibs="-lstdc++"
2998 decklink_outdev_deps="decklink threads"
2999 decklink_outdev_extralibs="-lstdc++"
3000 dshow_indev_deps="IBaseFilter"
3001 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3002 dv1394_indev_deps="dv1394"
3003 dv1394_indev_select="dv_demuxer"
3004 fbdev_indev_deps="linux_fb_h"
3005 fbdev_outdev_deps="linux_fb_h"
3006 gdigrab_indev_deps="CreateDIBSection"
3007 gdigrab_indev_extralibs="-lgdi32"
3008 gdigrab_indev_select="bmp_decoder"
3009 iec61883_indev_deps="libiec61883"
3010 jack_indev_deps="jack"
3011 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3012 lavfi_indev_deps="avfilter"
3013 libcdio_indev_deps="libcdio"
3014 libdc1394_indev_deps="libdc1394"
3015 libv4l2_indev_deps="libv4l2"
3016 openal_indev_deps="openal"
3017 opengl_outdev_deps="opengl"
3018 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3019 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3020 pulse_indev_deps="libpulse"
3021 pulse_outdev_deps="libpulse"
3022 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
3023 qtkit_indev_select="qtkit"
3024 sdl2_outdev_deps="sdl2"
3025 sndio_indev_deps="sndio"
3026 sndio_outdev_deps="sndio"
3027 v4l_indev_deps="linux_videodev_h"
3028 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3029 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3030 vfwcap_indev_deps="vfw32 vfwcap_defines"
3031 xcbgrab_indev_deps="libxcb"
3032 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3033 xv_outdev_extralibs="-lXv -lX11 -lXext"
3034
3035 # protocols
3036 async_protocol_deps="threads"
3037 bluray_protocol_deps="libbluray"
3038 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3039 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3040 ffrtmpcrypt_protocol_select="tcp_protocol"
3041 ffrtmphttp_protocol_deps="!librtmp_protocol"
3042 ffrtmphttp_protocol_select="http_protocol"
3043 ftp_protocol_select="tcp_protocol"
3044 gopher_protocol_select="network"
3045 http_protocol_select="tcp_protocol"
3046 httpproxy_protocol_select="tcp_protocol"
3047 https_protocol_select="tls_protocol"
3048 icecast_protocol_select="http_protocol"
3049 librtmp_protocol_deps="librtmp"
3050 librtmpe_protocol_deps="librtmp"
3051 librtmps_protocol_deps="librtmp"
3052 librtmpt_protocol_deps="librtmp"
3053 librtmpte_protocol_deps="librtmp"
3054 libsmbclient_protocol_deps="libsmbclient gplv3"
3055 libssh_protocol_deps="libssh"
3056 mmsh_protocol_select="http_protocol"
3057 mmst_protocol_select="network"
3058 rtmp_protocol_deps="!librtmp_protocol"
3059 rtmp_protocol_select="tcp_protocol"
3060 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3061 rtmps_protocol_deps="!librtmp_protocol"
3062 rtmps_protocol_select="tls_protocol"
3063 rtmpt_protocol_select="ffrtmphttp_protocol"
3064 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3065 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3066 rtp_protocol_select="udp_protocol"
3067 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3068 sctp_protocol_select="network"
3069 srtp_protocol_select="rtp_protocol srtp"
3070 tcp_protocol_select="network"
3071 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3072 tls_gnutls_protocol_select="tcp_protocol"
3073 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3074 tls_openssl_protocol_select="tcp_protocol"
3075 tls_schannel_protocol_deps="schannel"
3076 tls_schannel_protocol_select="tcp_protocol"
3077 tls_securetransport_protocol_deps="securetransport"
3078 tls_securetransport_protocol_select="tcp_protocol"
3079 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3080 udp_protocol_select="network"
3081 udplite_protocol_select="network"
3082 unix_protocol_deps="sys_un_h"
3083 unix_protocol_select="network"
3084
3085 # filters
3086 afftfilt_filter_deps="avcodec"
3087 afftfilt_filter_select="fft"
3088 afir_filter_deps="avcodec"
3089 afir_filter_select="fft"
3090 amovie_filter_deps="avcodec avformat"
3091 aresample_filter_deps="swresample"
3092 ass_filter_deps="libass"
3093 atempo_filter_deps="avcodec"
3094 atempo_filter_select="rdft"
3095 azmq_filter_deps="libzmq"
3096 blackframe_filter_deps="gpl"
3097 boxblur_filter_deps="gpl"
3098 bs2b_filter_deps="libbs2b"
3099 colormatrix_filter_deps="gpl"
3100 cover_rect_filter_deps="avcodec avformat gpl"
3101 cropdetect_filter_deps="gpl"
3102 deinterlace_qsv_filter_deps="libmfx"
3103 deinterlace_vaapi_filter_deps="vaapi"
3104 delogo_filter_deps="gpl"
3105 deshake_filter_select="pixelutils"
3106 drawtext_filter_deps="libfreetype"
3107 elbg_filter_deps="avcodec"
3108 eq_filter_deps="gpl"
3109 fftfilt_filter_deps="avcodec"
3110 fftfilt_filter_select="rdft"
3111 find_rect_filter_deps="avcodec avformat gpl"
3112 firequalizer_filter_deps="avcodec"
3113 firequalizer_filter_select="rdft"
3114 flite_filter_deps="libflite"
3115 framerate_filter_select="pixelutils"
3116 frei0r_filter_deps="frei0r dlopen"
3117 frei0r_src_filter_deps="frei0r dlopen"
3118 fspp_filter_deps="gpl"
3119 geq_filter_deps="gpl"
3120 histeq_filter_deps="gpl"
3121 hqdn3d_filter_deps="gpl"
3122 interlace_filter_deps="gpl"
3123 kerndeint_filter_deps="gpl"
3124 ladspa_filter_deps="ladspa dlopen"
3125 mcdeint_filter_deps="avcodec gpl"
3126 movie_filter_deps="avcodec avformat"
3127 mpdecimate_filter_deps="gpl"
3128 mpdecimate_filter_select="pixelutils"
3129 mptestsrc_filter_deps="gpl"
3130 negate_filter_deps="lut_filter"
3131 nnedi_filter_deps="gpl"
3132 ocr_filter_deps="libtesseract"
3133 ocv_filter_deps="libopencv"
3134 owdenoise_filter_deps="gpl"
3135 pan_filter_deps="swresample"
3136 perspective_filter_deps="gpl"
3137 phase_filter_deps="gpl"
3138 pp7_filter_deps="gpl"
3139 pp_filter_deps="gpl postproc"
3140 pullup_filter_deps="gpl"
3141 removelogo_filter_deps="avcodec avformat swscale"
3142 repeatfields_filter_deps="gpl"
3143 resample_filter_deps="avresample"
3144 rubberband_filter_deps="librubberband"
3145 sab_filter_deps="gpl swscale"
3146 scale2ref_filter_deps="swscale"
3147 scale_filter_deps="swscale"
3148 scale_qsv_filter_deps="libmfx"
3149 select_filter_select="pixelutils"
3150 showcqt_filter_deps="avcodec avformat swscale"
3151 showcqt_filter_select="fft"
3152 showfreqs_filter_deps="avcodec"
3153 showfreqs_filter_select="fft"
3154 showspectrum_filter_deps="avcodec"
3155 showspectrum_filter_select="fft"
3156 showspectrumpic_filter_deps="avcodec"
3157 showspectrumpic_filter_select="fft"
3158 signature_filter_deps="gpl avcodec avformat"
3159 smartblur_filter_deps="gpl swscale"
3160 sofalizer_filter_deps="netcdf avcodec"
3161 sofalizer_filter_select="fft"
3162 spectrumsynth_filter_deps="avcodec"
3163 spectrumsynth_filter_select="fft"
3164 spp_filter_deps="gpl avcodec"
3165 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3166 stereo3d_filter_deps="gpl"
3167 subtitles_filter_deps="avformat avcodec libass"
3168 super2xsai_filter_deps="gpl"
3169 pixfmts_super2xsai_test_deps="super2xsai_filter"
3170 tinterlace_filter_deps="gpl"
3171 tinterlace_merge_test_deps="tinterlace_filter"
3172 tinterlace_pad_test_deps="tinterlace_filter"
3173 uspp_filter_deps="gpl avcodec"
3174 vaguedenoiser_filter_deps="gpl"
3175 vidstabdetect_filter_deps="libvidstab"
3176 vidstabtransform_filter_deps="libvidstab"
3177 zmq_filter_deps="libzmq"
3178 zoompan_filter_deps="swscale"
3179 zscale_filter_deps="libzimg"
3180 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3181
3182 # examples
3183 avio_dir_cmd_deps="avformat avutil"
3184 avio_reading_deps="avformat avcodec avutil"
3185 decode_audio_example_deps="avcodec avutil"
3186 decode_video_example_deps="avcodec avutil"
3187 demuxing_decoding_example_deps="avcodec avformat avutil"
3188 encode_audio_example_deps="avcodec avutil"
3189 encode_video_example_deps="avcodec avutil"
3190 extract_mvs_example_deps="avcodec avformat avutil"
3191 filter_audio_example_deps="avfilter avutil"
3192 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3193 filtering_video_example_deps="avfilter avcodec avformat avutil"
3194 http_multiclient_example_deps="avformat avutil fork"
3195 metadata_example_deps="avformat avutil"
3196 muxing_example_deps="avcodec avformat avutil swscale"
3197 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3198 remuxing_example_deps="avcodec avformat avutil"
3199 resampling_audio_example_deps="avutil swresample"
3200 scaling_video_example_deps="avutil swscale"
3201 transcode_aac_example_deps="avcodec avformat swresample"
3202 transcoding_example_deps="avfilter avcodec avformat avutil"
3203
3204 # libraries, in linking order
3205 avcodec_deps="avutil"
3206 avcodec_select="null_bsf"
3207 avdevice_deps="avformat avcodec avutil"
3208 avfilter_deps="avutil"
3209 avformat_deps="avcodec avutil"
3210 avresample_deps="avutil"
3211 postproc_deps="avutil gpl"
3212 swresample_deps="avutil"
3213 swscale_deps="avutil"
3214
3215 # programs
3216 ffmpeg_deps="avcodec avfilter avformat swresample"
3217 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3218                null_filter
3219                trim_filter"
3220 ffplay_deps="avcodec avformat swscale swresample sdl2"
3221 ffplay_extralibs='$sdl2_extralibs'
3222 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3223 ffprobe_deps="avcodec avformat"
3224 ffserver_deps="avformat fork sarestart"
3225 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3226
3227 # documentation
3228 podpages_deps="perl"
3229 manpages_deps="perl pod2man"
3230 htmlpages_deps="perl"
3231 htmlpages_deps_any="makeinfo_html texi2html"
3232 txtpages_deps="perl makeinfo"
3233 doc_deps_any="manpages htmlpages podpages txtpages"
3234
3235 # default parameters
3236
3237 logfile="ffbuild/config.log"
3238
3239 # installation paths
3240 prefix_default="/usr/local"
3241 bindir_default='${prefix}/bin'
3242 datadir_default='${prefix}/share/ffmpeg'
3243 docdir_default='${prefix}/share/doc/ffmpeg'
3244 incdir_default='${prefix}/include'
3245 libdir_default='${prefix}/lib'
3246 mandir_default='${prefix}/share/man'
3247
3248 # toolchain
3249 ar_default="ar"
3250 cc_default="gcc"
3251 cxx_default="g++"
3252 host_cc_default="gcc"
3253 doxygen_default="doxygen"
3254 install="install"
3255 ln_s_default="ln -s -f"
3256 nm_default="nm -g"
3257 objformat="elf"
3258 pkg_config_default=pkg-config
3259 ranlib_default="ranlib"
3260 strip_default="strip"
3261 version_script='--version-script'
3262 yasmexe_default="yasm"
3263 windres_default="windres"
3264
3265 # OS
3266 target_os_default=$(tolower $(uname -s))
3267 host_os=$target_os_default
3268
3269 # machine
3270 if test "$target_os_default" = aix; then
3271     arch_default=$(uname -p)
3272     strip_default="strip -X32_64"
3273 else
3274     arch_default=$(uname -m)
3275 fi
3276 cpu="generic"
3277 intrinsics="none"
3278
3279 # configurable options
3280 enable $PROGRAM_LIST
3281 enable $DOCUMENT_LIST
3282 enable $EXAMPLE_LIST
3283 enable $(filter_out avresample $LIBRARY_LIST)
3284 enable stripping
3285
3286 enable asm
3287 enable debug
3288 enable doc
3289 enable faan faandct faanidct
3290 enable optimizations
3291 enable runtime_cpudetect
3292 enable safe_bitstream_reader
3293 enable static
3294 enable swscale_alpha
3295 enable valgrind_backtrace
3296
3297 sws_max_filter_size_default=256
3298 set_default sws_max_filter_size
3299
3300 # build settings
3301 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3302 LIBPREF="lib"
3303 LIBSUF=".a"
3304 FULLNAME='$(NAME)$(BUILDSUF)'
3305 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3306 SLIBPREF="lib"
3307 SLIBSUF=".so"
3308 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3309 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3310 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3311 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3312 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3313 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3314 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3315
3316 asflags_filter=echo
3317 cflags_filter=echo
3318 ldflags_filter=echo
3319
3320 AS_C='-c'
3321 AS_O='-o $@'
3322 CC_C='-c'
3323 CC_E='-E -o $@'
3324 CC_O='-o $@'
3325 CXX_C='-c'
3326 CXX_O='-o $@'
3327 OBJCC_C='-c'
3328 OBJCC_E='-E -o $@'
3329 OBJCC_O='-o $@'
3330 LD_O='-o $@'
3331 LD_LIB='-l%'
3332 LD_PATH='-L'
3333 HOSTCC_C='-c'
3334 HOSTCC_E='-E -o $@'
3335 HOSTCC_O='-o $@'
3336 HOSTLD_O='-o $@'
3337
3338 host_extralibs='-lm'
3339 host_cflags_filter=echo
3340 host_ldflags_filter=echo
3341
3342 target_path='$(CURDIR)'
3343
3344 # since the object filename is not given with the -MM flag, the compiler
3345 # is only able to print the basename, and we must add the path ourselves
3346 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3347 DEPFLAGS='-MM'
3348
3349 # find source path
3350 if test -f configure; then
3351     source_path=.
3352 else
3353     source_path=$(cd $(dirname "$0"); pwd)
3354     case "$source_path" in
3355         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3356     esac
3357     test -e "$source_path/config.h" &&
3358         die "Out of tree builds are impossible with config.h in source dir."
3359 fi
3360
3361 for v in "$@"; do
3362     r=${v#*=}
3363     l=${v%"$r"}
3364     r=$(sh_quote "$r")
3365     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3366 done
3367
3368 find_things(){
3369     thing=$1
3370     pattern=$2
3371     file=$source_path/$3
3372     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3373 }
3374
3375 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3376 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3377 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3378 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3379 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3380 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3381 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3382 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3383 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3384
3385 find_things_extern(){
3386     thing=$1
3387     pattern=$2
3388     file=$source_path/$3
3389     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3390 }
3391
3392 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3393 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3394
3395 ALL_COMPONENTS="
3396     $BSF_LIST
3397     $DECODER_LIST
3398     $DEMUXER_LIST
3399     $ENCODER_LIST
3400     $FILTER_LIST
3401     $HWACCEL_LIST
3402     $INDEV_LIST
3403     $MUXER_LIST
3404     $OUTDEV_LIST
3405     $PARSER_LIST
3406     $PROTOCOL_LIST
3407 "
3408
3409 for n in $COMPONENT_LIST; do
3410     v=$(toupper ${n%s})_LIST
3411     eval enable \$$v
3412     eval ${n}_if_any="\$$v"
3413 done
3414
3415 enable $ARCH_EXT_LIST
3416
3417 die_unknown(){
3418     echo "Unknown option \"$1\"."
3419     echo "See $0 --help for available options."
3420     exit 1
3421 }
3422
3423 print_in_columns() {
3424     cols=$(expr $ncols / 24)
3425     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3426 }
3427
3428 show_list() {
3429     suffix=_$1
3430     shift
3431     echo $* | sed s/$suffix//g | print_in_columns
3432     exit 0
3433 }
3434
3435 rand_list(){
3436     IFS=', '
3437     set -- $*
3438     unset IFS
3439     for thing; do
3440         comp=${thing%:*}
3441         prob=${thing#$comp}
3442         prob=${prob#:}
3443         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3444         echo "prob ${prob:-0.5}"
3445         printf '%s\n' $comp
3446     done
3447 }
3448
3449 do_random(){
3450     action=$1
3451     shift
3452     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3453     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3454 }
3455
3456 for opt do
3457     optval="${opt#*=}"
3458     case "$opt" in
3459         --extra-ldflags=*)
3460             add_ldflags $optval
3461         ;;
3462         --extra-ldexeflags=*)
3463             add_ldexeflags $optval
3464         ;;
3465         --extra-ldlibflags=*)
3466             add_ldlibflags $optval
3467         ;;
3468         --extra-libs=*)
3469             add_extralibs $optval
3470         ;;
3471         --disable-devices)
3472             disable $INDEV_LIST $OUTDEV_LIST
3473         ;;
3474         --enable-debug=*)
3475             debuglevel="$optval"
3476         ;;
3477         --disable-programs)
3478             disable $PROGRAM_LIST
3479         ;;
3480         --disable-everything)
3481             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3482         ;;
3483         --disable-all)
3484             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3485             disable $LIBRARY_LIST $PROGRAM_LIST doc
3486             enable avutil
3487         ;;
3488         --enable-random|--disable-random)
3489             action=${opt%%-random}
3490             do_random ${action#--} $COMPONENT_LIST
3491         ;;
3492         --enable-random=*|--disable-random=*)
3493             action=${opt%%-random=*}
3494             do_random ${action#--} $optval
3495         ;;
3496         --enable-*=*|--disable-*=*)
3497             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3498             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3499             eval list=\$$(toupper $thing)_LIST
3500             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3501             list=$(filter "$name" $list)
3502             [ "$list" = "" ] && warn "Option $opt did not match anything"
3503             $action $list
3504         ;;
3505         --enable-?*|--disable-?*)
3506             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3507             if is_in $option $COMPONENT_LIST; then
3508                 test $action = disable && action=unset
3509                 eval $action \$$(toupper ${option%s})_LIST
3510             elif is_in $option $CMDLINE_SELECT; then
3511                 $action $option
3512             else
3513                 die_unknown $opt
3514             fi
3515         ;;
3516         --list-*)
3517             NAME="${opt#--list-}"
3518             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3519             NAME=${NAME%s}
3520             eval show_list $NAME \$$(toupper $NAME)_LIST
3521         ;;
3522         --help|-h) show_help
3523         ;;
3524         --quiet|-q) quiet=yes
3525         ;;
3526         --fatal-warnings) enable fatal_warnings
3527         ;;
3528         --libfuzzer=*)
3529             libfuzzer_path="$optval"
3530         ;;
3531         *)
3532             optname="${opt%%=*}"
3533             optname="${optname#--}"
3534             optname=$(echo "$optname" | sed 's/-/_/g')
3535             if is_in $optname $CMDLINE_SET; then
3536                 eval $optname='$optval'
3537             elif is_in $optname $CMDLINE_APPEND; then
3538                 append $optname "$optval"
3539             else
3540                 die_unknown $opt
3541             fi
3542         ;;
3543     esac
3544 done
3545
3546 for e in $env; do
3547     eval "export $e"
3548 done
3549
3550 # Mark specifically enabled, but normally autodetected libraries as requested.
3551 for lib in $AUTODETECT_LIBS; do
3552     enabled $lib && request $lib
3553 done
3554
3555 # Enable platform codecs by default.
3556 enable_weak audiotoolbox
3557
3558 # Enable hwaccels by default.
3559 enable_weak d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3560 enable_weak xlib
3561
3562 enable_weak cuda cuvid nvenc vda_framework videotoolbox videotoolbox_encoder
3563
3564 disabled logging && logfile=/dev/null
3565
3566 die_license_disabled() {
3567     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3568 }
3569
3570 die_license_disabled_gpl() {
3571     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3572 }
3573
3574 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3575 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3576
3577 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3578 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3579
3580 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3581
3582 # Disable all the library-specific components if the library itself
3583 # is disabled, see AVCODEC_LIST and following _LIST variables.
3584
3585 disable_components(){
3586     disabled ${1} && disable $(
3587         eval components="\$$(toupper ${1})_COMPONENTS"
3588         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3589     )
3590 }
3591
3592 map 'disable_components $v' $LIBRARY_LIST
3593
3594 mkdir -p ffbuild
3595 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3596 set >> $logfile
3597
3598 test -n "$valgrind" && toolchain="valgrind-memcheck"
3599
3600 enabled ossfuzz && {
3601     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3602     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3603 }
3604
3605 case "$toolchain" in
3606     *-asan)
3607         cc_default="${toolchain%-asan}"
3608         add_cflags  -fsanitize=address
3609         add_ldflags -fsanitize=address
3610     ;;
3611     *-msan)
3612         cc_default="${toolchain%-msan}"
3613         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3614         add_ldflags -fsanitize=memory
3615     ;;
3616     *-tsan)
3617         cc_default="${toolchain%-tsan}"
3618         add_cflags  -fsanitize=thread -fPIE
3619         add_ldflags -fsanitize=thread -pie
3620         case "$toolchain" in
3621             gcc-tsan)
3622                 add_cflags  -fPIC
3623                 add_ldflags -fPIC
3624                 ;;
3625         esac
3626     ;;
3627     *-usan)
3628         cc_default="${toolchain%-usan}"
3629         add_cflags  -fsanitize=undefined
3630         add_ldflags -fsanitize=undefined
3631     ;;
3632     valgrind-*)
3633         target_exec_default="valgrind"
3634         case "$toolchain" in
3635             valgrind-massif)
3636                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3637                 ;;
3638             valgrind-memcheck)
3639                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3640                 ;;
3641         esac
3642     ;;
3643     msvc)
3644         # Check whether the current MSVC version needs the C99 converter.
3645         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3646         # support enough of C99 to build ffmpeg. Default to the new
3647         # behaviour if the regexp was unable to match anything, since this
3648         # successfully parses the version number of existing supported
3649         # versions that require the converter (MSVC 2010 and 2012).
3650         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3651         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3652             cc_default="cl"
3653             cxx_default="cl"
3654         else
3655             cc_default="c99wrap cl"
3656             cxx_default="c99wrap cl"
3657         fi
3658         ld_default="$source_path/compat/windows/mslink"
3659         nm_default="dumpbin -symbols"
3660         ar_default="lib"
3661         case "$arch" in
3662         arm*)
3663             as_default="armasm"
3664             ;;
3665         esac
3666         target_os_default="win32"
3667         # Use a relative path for TMPDIR. This makes sure all the
3668         # ffconf temp files are written with a relative path, avoiding
3669         # issues with msys/win32 path conversion for MSVC parameters
3670         # such as -Fo<file> or -out:<file>.
3671         TMPDIR=.
3672     ;;
3673     icl)
3674         cc_default="icl"
3675         ld_default="xilink"
3676         nm_default="dumpbin -symbols"
3677         ar_default="xilib"
3678         target_os_default="win32"
3679         TMPDIR=.
3680     ;;
3681     gcov)
3682         add_cflags  -fprofile-arcs -ftest-coverage
3683         add_ldflags -fprofile-arcs -ftest-coverage
3684     ;;
3685     llvm-cov)
3686         add_cflags -fprofile-arcs -ftest-coverage
3687         add_ldflags --coverage
3688     ;;
3689     hardened)
3690         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3691         add_cflags   -fno-strict-overflow -fstack-protector-all
3692         add_ldflags  -Wl,-z,relro -Wl,-z,now
3693         add_cflags   -fPIE
3694         add_ldexeflags -fPIE -pie
3695     ;;
3696     ?*)
3697         die "Unknown toolchain $toolchain"
3698     ;;
3699 esac
3700
3701 test -n "$cross_prefix" && enable cross_compile
3702
3703 if enabled cross_compile; then
3704     test -n "$arch" && test -n "$target_os" ||
3705         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3706 fi
3707
3708 ar_default="${cross_prefix}${ar_default}"
3709 cc_default="${cross_prefix}${cc_default}"
3710 cxx_default="${cross_prefix}${cxx_default}"
3711 nm_default="${cross_prefix}${nm_default}"
3712 pkg_config_default="${cross_prefix}${pkg_config_default}"
3713 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3714     ranlib_default="${cross_prefix}${ranlib_default} -D"
3715 else
3716     ranlib_default="${cross_prefix}${ranlib_default}"
3717 fi
3718 strip_default="${cross_prefix}${strip_default}"
3719 windres_default="${cross_prefix}${windres_default}"
3720
3721 sysinclude_default="${sysroot}/usr/include"
3722
3723 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3724     target_exec target_os yasmexe
3725 enabled cross_compile || host_cc_default=$cc
3726 set_default host_cc
3727
3728 pkg_config_fail_message=""
3729 if ! $pkg_config --version >/dev/null 2>&1; then
3730     warn "$pkg_config not found, library detection may fail."
3731     pkg_config=false
3732 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3733     pkg_config_fail_message="
3734 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3735 fi
3736
3737 if test $doxygen != $doxygen_default && \
3738   ! $doxygen --version >/dev/null 2>&1; then
3739     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3740 fi
3741
3742 exesuf() {
3743     case $1 in
3744         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3745     esac
3746 }
3747
3748 EXESUF=$(exesuf $target_os)
3749 HOSTEXESUF=$(exesuf $host_os)
3750
3751 # set temporary file name
3752 : ${TMPDIR:=$TEMPDIR}
3753 : ${TMPDIR:=$TMP}
3754 : ${TMPDIR:=/tmp}
3755
3756 if [ -n "$tempprefix" ] ; then
3757     mktemp(){
3758         echo $tempprefix.${HOSTNAME}.${UID}
3759     }
3760 elif ! check_cmd mktemp -u XXXXXX; then
3761     # simple replacement for missing mktemp
3762     # NOT SAFE FOR GENERAL USE
3763     mktemp(){
3764         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3765     }
3766 fi
3767
3768 tmpfile(){
3769     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3770         (set -C; exec > $tmp) 2>/dev/null ||
3771         die "Unable to create temporary file in $TMPDIR."
3772     append TMPFILES $tmp
3773     eval $1=$tmp
3774 }
3775
3776 trap 'rm -f -- $TMPFILES' EXIT
3777
3778 tmpfile TMPASM .asm
3779 tmpfile TMPC   .c
3780 tmpfile TMPCPP .cpp
3781 tmpfile TMPE   $EXESUF
3782 tmpfile TMPH   .h
3783 tmpfile TMPM   .m
3784 tmpfile TMPO   .o
3785 tmpfile TMPS   .S
3786 tmpfile TMPSH  .sh
3787 tmpfile TMPV   .ver
3788
3789 unset -f mktemp
3790
3791 chmod +x $TMPE
3792
3793 # make sure we can execute files in $TMPDIR
3794 cat > $TMPSH 2>> $logfile <<EOF
3795 #! /bin/sh
3796 EOF
3797 chmod +x $TMPSH >> $logfile 2>&1
3798 if ! $TMPSH >> $logfile 2>&1; then
3799     cat <<EOF
3800 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3801 variable to another directory and make sure that it is not mounted noexec.
3802 EOF
3803     die "Sanity test failed."
3804 fi
3805
3806 armasm_flags(){
3807     for flag; do
3808         case $flag in
3809             # Filter out MSVC cl.exe options from cflags that shouldn't
3810             # be passed to gas-preprocessor
3811             -M[TD]*)                                            ;;
3812             *)                  echo $flag                      ;;
3813         esac
3814    done
3815 }
3816
3817 ccc_flags(){
3818     for flag; do
3819         case $flag in
3820             -std=c99)           echo -c99                       ;;
3821             -mcpu=*)            echo -arch ${flag#*=}           ;;
3822             -mieee)             echo -ieee                      ;;
3823             -O*|-fast)          echo $flag                      ;;
3824             -fno-math-errno)    echo -assume nomath_errno       ;;
3825             -g)                 echo -g3                        ;;
3826             -Wall)              echo -msg_enable level2         ;;
3827             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3828             -Wl,*)              echo $flag                      ;;
3829             -f*|-W*)                                            ;;
3830             *)                  echo $flag                      ;;
3831         esac
3832    done
3833 }
3834
3835 cparser_flags(){
3836     for flag; do
3837         case $flag in
3838             -Wno-switch)             echo -Wno-switch-enum ;;
3839             -Wno-format-zero-length) ;;
3840             -Wdisabled-optimization) ;;
3841             -Wno-pointer-sign)       echo -Wno-other ;;
3842             *)                       echo $flag ;;
3843         esac
3844     done
3845 }
3846
3847 msvc_common_flags(){
3848     for flag; do
3849         case $flag in
3850             # In addition to specifying certain flags under the compiler
3851             # specific filters, they must be specified here as well or else the
3852             # generic catch all at the bottom will print the original flag.
3853             -Wall)                ;;
3854             -std=c99)             ;;
3855             # Common flags
3856             -fomit-frame-pointer) ;;
3857             -g)                   echo -Z7 ;;
3858             -fno-math-errno)      ;;
3859             -fno-common)          ;;
3860             -fno-signed-zeros)    ;;
3861             -fPIC)                ;;
3862             -mthumb)              ;;
3863             -march=*)             ;;
3864             -lz)                  echo zlib.lib ;;
3865             -lx264)               echo libx264.lib ;;
3866             -lstdc++)             ;;
3867             -l*)                  echo ${flag#-l}.lib ;;
3868             -LARGEADDRESSAWARE)   echo $flag ;;
3869             -L*)                  echo -libpath:${flag#-L} ;;
3870             *)                    echo $flag ;;
3871         esac
3872     done
3873 }
3874
3875 msvc_flags(){
3876     msvc_common_flags "$@"
3877     for flag; do
3878         case $flag in
3879             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3880                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3881                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3882                                        -wd4307 \
3883                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3884         esac
3885     done
3886 }
3887
3888 icl_flags(){
3889     msvc_common_flags "$@"
3890     for flag; do
3891         case $flag in
3892             # Despite what Intel's documentation says -Wall, which is supported
3893             # on Windows, does enable remarks so disable them here.
3894             -Wall)                echo $flag -Qdiag-disable:remark ;;
3895             -std=c99)             echo -Qstd=c99 ;;
3896             -flto)                echo -ipo ;;
3897         esac
3898     done
3899 }
3900
3901 icc_flags(){
3902     for flag; do
3903         case $flag in
3904             -flto)                echo -ipo ;;
3905             *)                    echo $flag ;;
3906         esac
3907     done
3908 }
3909
3910 pgi_flags(){
3911     for flag; do
3912         case $flag in
3913             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3914             -fomit-frame-pointer) echo -Mnoframe ;;
3915             -g)                   echo -gopt ;;
3916             *)                    echo $flag ;;
3917         esac
3918     done
3919 }
3920
3921 suncc_flags(){
3922     for flag; do
3923         case $flag in
3924             -march=*|-mcpu=*)
3925                 case "${flag#*=}" in
3926                     native)                   echo -xtarget=native       ;;
3927                     v9|niagara)               echo -xarch=sparc          ;;
3928                     ultrasparc)               echo -xarch=sparcvis       ;;
3929                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3930                     i586|pentium)             echo -xchip=pentium        ;;
3931                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3932                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3933                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3934                     pentium4*)          echo -xtarget=pentium4           ;;
3935                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3936                     *-sse3)             echo -xarch=sse3                 ;;
3937                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3938                     bonnell)                   echo -xarch=ssse3         ;;
3939                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3940                     westmere)                  echo -xtarget=westmere    ;;
3941                     silvermont)                echo -xarch=sse4_2        ;;
3942                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3943                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3944                                                echo -xarch=avx           ;;
3945                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3946                     btver1)                    echo -xarch=amdsse4a      ;;
3947                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3948                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3949                     k8|opteron|athlon64|athlon-fx)
3950                                                echo -xarch=sse2a         ;;
3951                     athlon*)                   echo -xarch=pentium_proa  ;;
3952                 esac
3953                 ;;
3954             -std=c99)             echo -xc99              ;;
3955             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3956             -fPIC)                echo -KPIC -xcode=pic32 ;;
3957             -W*,*)                echo $flag              ;;
3958             -f*-*|-W*|-mimpure-text)                      ;;
3959             -shared)              echo -G                 ;;
3960             *)                    echo $flag              ;;
3961         esac
3962     done
3963 }
3964
3965 tms470_flags(){
3966     for flag; do
3967         case $flag in
3968             -march=*|-mcpu=*)
3969                 case "${flag#*=}" in
3970                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3971                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3972                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3973                     armv6*|arm11*)          echo -mv=6   ;;
3974                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3975                                             echo -mv=5e  ;;
3976                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3977                 esac
3978                 ;;
3979             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3980             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3981             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3982             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3983             -msoft-float)   echo --float_support=vfplib       ;;
3984             -O[0-3]|-mf=*)  echo $flag                        ;;
3985             -g)             echo -g -mn                       ;;
3986             -pds=*)         echo $flag                        ;;
3987             -D*|-I*)        echo $flag                        ;;
3988             --gcc|--abi=*)  echo $flag                        ;;
3989             -me)            echo $flag                        ;;
3990         esac
3991     done
3992 }
3993
3994 probe_cc(){
3995     pfx=$1
3996     _cc=$2
3997     first=$3
3998
3999     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4000     unset _ld_o _ldflags _ld_lib _ld_path
4001     unset _depflags _DEPCMD _DEPFLAGS
4002     _flags_filter=echo
4003
4004     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4005         true # no-op to avoid reading stdin in following checks
4006     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4007         _type=llvm_gcc
4008         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4009         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4010         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4011         _cflags_speed='-O3'
4012         _cflags_size='-Os'
4013     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4014         _type=gcc
4015         gcc_version=$($_cc --version | head -n1)
4016         gcc_basever=$($_cc -dumpversion)
4017         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4018         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4019         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4020         case $gcc_basever in
4021             2) ;;
4022             2.*) ;;
4023             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4024         esac
4025         if [ "$first" = true ]; then
4026             case $gcc_basever in
4027                 4.2*)
4028                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4029             esac
4030         fi
4031         _cflags_speed='-O3'
4032         _cflags_size='-Os'
4033     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4034         _type=icc
4035         _ident=$($_cc --version | head -n1)
4036         _depflags='-MMD'
4037         _cflags_speed='-O3'
4038         _cflags_size='-Os'
4039         _cflags_noopt='-O1'
4040         _flags_filter=icc_flags
4041     elif $_cc -v 2>&1 | grep -q xlc; then
4042         _type=xlc
4043         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4044         _cflags_speed='-O5'
4045         _cflags_size='-O5 -qcompact'
4046     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4047         _type=ccc
4048         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4049         _DEPFLAGS='-M'
4050         _cflags_speed='-fast'
4051         _cflags_size='-O1'
4052         _flags_filter=ccc_flags
4053     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4054         test -d "$sysroot" || die "No valid sysroot specified."
4055         _type=armcc
4056         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4057         armcc_conf="$PWD/armcc.conf"
4058         $_cc --arm_linux_configure                 \
4059              --arm_linux_config_file="$armcc_conf" \
4060              --configure_sysroot="$sysroot"        \
4061              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4062              die "Error creating armcc configuration file."
4063         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4064         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4065         as_default="${cross_prefix}gcc"
4066         _depflags='-MMD'
4067         _cflags_speed='-O3'
4068         _cflags_size='-Os'
4069     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4070         _type=tms470
4071         _ident=$($_cc -version | head -n1 | tr -s ' ')
4072         _flags='--gcc --abi=eabi -me'
4073         _cc_e='-ppl -fe=$@'
4074         _cc_o='-fe=$@'
4075         _depflags='-ppa -ppd=$(@:.o=.d)'
4076         _cflags_speed='-O3 -mf=5'
4077         _cflags_size='-O3 -mf=2'
4078         _flags_filter=tms470_flags
4079     elif $_cc -v 2>&1 | grep -q clang; then
4080         _type=clang
4081         _ident=$($_cc --version 2>/dev/null | head -n1)
4082         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4083         _cflags_speed='-O3'
4084         _cflags_size='-Oz'
4085     elif $_cc -V 2>&1 | grep -q Sun; then
4086         _type=suncc
4087         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4088         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4089         _DEPFLAGS='-xM1 -xc99'
4090         _ldflags='-std=c99'
4091         _cflags_speed='-O5'
4092         _cflags_size='-O5 -xspace'
4093         _flags_filter=suncc_flags
4094     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4095         _type=pathscale
4096         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4097         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4098         _cflags_speed='-O2'
4099         _cflags_size='-Os'
4100         _flags_filter='filter_out -Wdisabled-optimization'
4101     elif $_cc -v 2>&1 | grep -q Open64; then
4102         _type=open64
4103         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4104         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4105         _cflags_speed='-O2'
4106         _cflags_size='-Os'
4107         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4108     elif $_cc -V 2>&1 | grep -q Portland; then
4109         _type=pgi
4110         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4111         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4112         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4113         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4114         _cflags_noopt="-O"
4115         _flags_filter=pgi_flags
4116     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4117         _type=armasm
4118         _ident=$($_cc | head -n1)
4119         # 4509: "This form of conditional instruction is deprecated"
4120         _flags="-nologo -ignore 4509"
4121         _flags_filter=armasm_flags
4122     elif $_cc 2>&1 | grep -q Intel; then
4123         _type=icl
4124         _ident=$($_cc 2>&1 | head -n1)
4125         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4126         # Not only is O3 broken on 13.x+ but it is slower on all previous
4127         # versions (tested) as well.
4128         _cflags_speed="-O2"
4129         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4130         if $_cc 2>&1 | grep -q Linker; then
4131             _ld_o='-out:$@'
4132         else
4133             _ld_o='-Fe$@'
4134         fi
4135         _cc_o='-Fo$@'
4136         _cc_e='-P'
4137         _flags_filter=icl_flags
4138         _ld_lib='lib%.a'
4139         _ld_path='-libpath:'
4140         # -Qdiag-error to make icl error when seeing certain unknown arguments
4141         _flags='-nologo -Qdiag-error:4044,10157'
4142         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4143         # with MSVC which enables it by default.
4144         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4145         disable stripping
4146     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4147         # lld can emulate multiple different linkers; in ms link.exe mode,
4148         # the -? parameter gives the help output which contains an identifyable
4149         # string, while it gives an error in other modes.
4150         _type=lld-link
4151         # The link.exe mode doesn't have a switch for getting the version,
4152         # but we can force it back to gnu mode and get the version from there.
4153         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4154         _ld_o='-out:$@'
4155         _flags_filter=msvc_flags
4156         _ld_lib='lib%.a'
4157         _ld_path='-libpath:'
4158     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4159         _type=msvc
4160         _ident=$($_cc 2>&1 | head -n1)
4161         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4162         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4163         _cflags_speed="-O2"
4164         _cflags_size="-O1"
4165         _cflags_noopt="-O1"
4166         if $_cc -nologo- 2>&1 | grep -q Linker; then
4167             _ld_o='-out:$@'
4168         else
4169             _ld_o='-Fe$@'
4170         fi
4171         _cc_o='-Fo$@'
4172         _cc_e='-P -Fi$@'
4173         _flags_filter=msvc_flags
4174         _ld_lib='lib%.a'
4175         _ld_path='-libpath:'
4176         _flags='-nologo'
4177         disable stripping
4178     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4179         _type=cparser
4180         _ident=$($_cc --version | head -n1)
4181         _depflags='-MMD'
4182         _cflags_speed='-O4'
4183         _cflags_size='-O2'
4184         _flags_filter=cparser_flags
4185     fi
4186
4187     eval ${pfx}_type=\$_type
4188     eval ${pfx}_ident=\$_ident
4189 }
4190
4191 set_ccvars(){
4192     eval ${1}_C=\${_cc_c-\${${1}_C}}
4193     eval ${1}_E=\${_cc_e-\${${1}_E}}
4194     eval ${1}_O=\${_cc_o-\${${1}_O}}
4195
4196     if [ -n "$_depflags" ]; then
4197         eval ${1}_DEPFLAGS=\$_depflags
4198     else
4199         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4200         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4201         eval DEP${1}FLAGS=\$_flags
4202     fi
4203 }
4204
4205 probe_cc cc "$cc" "true"
4206 cflags_filter=$_flags_filter
4207 cflags_speed=$_cflags_speed
4208 cflags_size=$_cflags_size
4209 cflags_noopt=$_cflags_noopt
4210 add_cflags $_flags $_cflags
4211 cc_ldflags=$_ldflags
4212 set_ccvars CC
4213 set_ccvars CXX
4214
4215 probe_cc hostcc "$host_cc"
4216 host_cflags_filter=$_flags_filter
4217 add_host_cflags  $_flags $_cflags
4218 set_ccvars HOSTCC
4219
4220 test -n "$cc_type" && enable $cc_type ||
4221     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4222
4223 : ${as_default:=$cc}
4224 : ${objcc_default:=$cc}
4225 : ${dep_cc_default:=$cc}
4226 : ${ld_default:=$cc}
4227 : ${host_ld_default:=$host_cc}
4228 set_default ar as objcc dep_cc ld ln_s host_ld windres
4229
4230 probe_cc as "$as"
4231 asflags_filter=$_flags_filter
4232 add_asflags $_flags $_cflags
4233 set_ccvars AS
4234
4235 probe_cc objcc "$objcc"
4236 objcflags_filter=$_flags_filter
4237 add_objcflags $_flags $_cflags
4238 set_ccvars OBJC
4239
4240 probe_cc ld "$ld"
4241 ldflags_filter=$_flags_filter
4242 add_ldflags $_flags $_ldflags
4243 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4244 LD_O=${_ld_o-$LD_O}
4245 LD_LIB=${_ld_lib-$LD_LIB}
4246 LD_PATH=${_ld_path-$LD_PATH}
4247
4248 probe_cc hostld "$host_ld"
4249 host_ldflags_filter=$_flags_filter
4250 add_host_ldflags $_flags $_ldflags
4251 HOSTLD_O=${_ld_o-$HOSTLD_O}
4252
4253 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4254     probe_cc depcc "$dep_cc"
4255     CCDEP=${_DEPCMD:-$DEPCMD}
4256     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4257     DEPCCFLAGS=$_flags
4258 fi
4259
4260 if $ar 2>&1 | grep -q Microsoft; then
4261     arflags="-nologo"
4262     ar_o='-out:$@'
4263 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4264     arflags="rq"
4265     ar_o='$@'
4266 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4267     arflags='-Xany -r -c'
4268     ar_o='$@'
4269 elif $ar 2>&1 | grep -q "\[D\] "; then
4270     arflags="rcD"
4271     ar_o='$@'
4272 else
4273     arflags="rc"
4274     ar_o='$@'
4275 fi
4276
4277 add_cflags $extra_cflags
4278 add_cxxflags $extra_cxxflags
4279 add_objcflags $extra_objcflags
4280 add_asflags $extra_cflags
4281
4282 if test -n "$sysroot"; then
4283     case "$cc_type" in
4284         gcc|llvm_gcc|clang)
4285             add_cppflags --sysroot="$sysroot"
4286             add_ldflags --sysroot="$sysroot"
4287 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4288             add_cppflags -isysroot "$sysroot"
4289             add_ldflags -isysroot "$sysroot"
4290         ;;
4291         tms470)
4292             add_cppflags -I"$sysinclude"
4293             add_ldflags  --sysroot="$sysroot"
4294         ;;
4295     esac
4296 fi
4297
4298 if test "$cpu" = host; then
4299     enabled cross_compile &&
4300         die "--cpu=host makes no sense when cross-compiling."
4301
4302     case "$cc_type" in
4303         gcc|llvm_gcc)
4304             check_native(){
4305                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4306                 sed -n "/cc1.*$1=/{
4307                             s/.*$1=\\([^ ]*\\).*/\\1/
4308                             p
4309                             q
4310                         }" $TMPE
4311             }
4312             cpu=$(check_native -march || check_native -mcpu)
4313         ;;
4314         clang)
4315             check_native(){
4316                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4317                 sed -n "/cc1.*-target-cpu /{
4318                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4319                             p
4320                             q
4321                         }" $TMPE
4322             }
4323             cpu=$(check_native -march)
4324         ;;
4325     esac
4326
4327     test "${cpu:-host}" = host &&
4328         die "--cpu=host not supported with compiler $cc"
4329 fi
4330
4331 # Deal with common $arch aliases
4332 case "$arch" in
4333     aarch64|arm64)
4334         arch="aarch64"
4335     ;;
4336     arm*|iPad*|iPhone*)
4337         arch="arm"
4338     ;;
4339     mips*|IP*)
4340         case "$arch" in
4341         *el)
4342             add_cppflags -EL
4343             add_ldflags -EL
4344         ;;
4345         *eb)
4346             add_cppflags -EB
4347             add_ldflags -EB
4348         ;;
4349         esac
4350         arch="mips"
4351     ;;
4352     parisc*|hppa*)
4353         arch="parisc"
4354     ;;
4355     "Power Macintosh"|ppc*|powerpc*)
4356         arch="ppc"
4357     ;;
4358     s390|s390x)
4359         arch="s390"
4360     ;;
4361     sh4|sh)
4362         arch="sh4"
4363     ;;
4364     sun4*|sparc*)
4365         arch="sparc"
4366     ;;
4367     tilegx|tile-gx)
4368         arch="tilegx"
4369     ;;
4370     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4371         arch="x86"
4372     ;;
4373 esac
4374
4375 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4376 enable $arch
4377
4378 # Add processor-specific flags
4379 if enabled aarch64; then
4380
4381     case $cpu in
4382         armv*)
4383             cpuflags="-march=$cpu"
4384         ;;
4385         *)
4386             cpuflags="-mcpu=$cpu"
4387         ;;
4388     esac
4389
4390 elif enabled alpha; then
4391
4392     cpuflags="-mcpu=$cpu"
4393
4394 elif enabled arm; then
4395
4396     check_arm_arch() {
4397         check_cpp_condition stddef.h \
4398             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4399             $cpuflags
4400     }
4401
4402     probe_arm_arch() {
4403         if   check_arm_arch 4;        then echo armv4
4404         elif check_arm_arch 4T;       then echo armv4t
4405         elif check_arm_arch 5;        then echo armv5
4406         elif check_arm_arch 5E;       then echo armv5e
4407         elif check_arm_arch 5T;       then echo armv5t
4408         elif check_arm_arch 5TE;      then echo armv5te
4409         elif check_arm_arch 5TEJ;     then echo armv5te
4410         elif check_arm_arch 6;        then echo armv6
4411         elif check_arm_arch 6J;       then echo armv6j
4412         elif check_arm_arch 6K;       then echo armv6k
4413         elif check_arm_arch 6Z;       then echo armv6z
4414         elif check_arm_arch 6ZK;      then echo armv6zk
4415         elif check_arm_arch 6T2;      then echo armv6t2
4416         elif check_arm_arch 7;        then echo armv7
4417         elif check_arm_arch 7A  7_A;  then echo armv7-a
4418         elif check_arm_arch 7S;       then echo armv7-a
4419         elif check_arm_arch 7R  7_R;  then echo armv7-r
4420         elif check_arm_arch 7M  7_M;  then echo armv7-m
4421         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4422         elif check_arm_arch 8A  8_A;  then echo armv8-a
4423         fi
4424     }
4425
4426     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4427
4428     case $cpu in
4429         armv*)
4430             cpuflags="-march=$cpu"
4431             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4432         ;;
4433         *)
4434             cpuflags="-mcpu=$cpu"
4435             case $cpu in
4436                 cortex-a*)                               subarch=armv7a  ;;
4437                 cortex-r*)                               subarch=armv7r  ;;
4438                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4439                 arm11*)                                  subarch=armv6   ;;
4440                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4441                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4442                 *)                             subarch=$(probe_arm_arch) ;;
4443             esac
4444         ;;
4445     esac
4446
4447     case "$subarch" in
4448         armv5t*)    enable fast_clz                ;;
4449         armv[6-8]*)
4450             enable fast_clz
4451             disabled fast_unaligned || enable fast_unaligned
4452             ;;
4453     esac
4454
4455 elif enabled avr32; then
4456
4457     case $cpu in
4458         ap7[02]0[0-2])
4459             subarch="avr32_ap"
4460             cpuflags="-mpart=$cpu"
4461         ;;
4462         ap)
4463             subarch="avr32_ap"
4464             cpuflags="-march=$cpu"
4465         ;;
4466         uc3[ab]*)
4467             subarch="avr32_uc"
4468             cpuflags="-mcpu=$cpu"
4469         ;;
4470         uc)
4471             subarch="avr32_uc"
4472             cpuflags="-march=$cpu"
4473         ;;
4474     esac
4475
4476 elif enabled bfin; then
4477
4478     cpuflags="-mcpu=$cpu"
4479
4480 elif enabled mips; then
4481
4482     cpuflags="-march=$cpu"
4483
4484     if [ "$cpu" != "generic" ]; then
4485         disable mips32r2
4486         disable mips32r5
4487         disable mips64r2
4488         disable mips32r6
4489         disable mips64r6
4490         disable loongson2
4491         disable loongson3
4492
4493         case $cpu in
4494             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4495                 enable mips32r2
4496                 disable msa
4497             ;;
4498             p5600|i6400|p6600)
4499                 disable mipsdsp
4500                 disable mipsdspr2
4501             ;;
4502             loongson*)
4503                 enable loongson2
4504                 enable loongson3
4505                 enable local_aligned_8 local_aligned_16 local_aligned_32
4506                 enable simd_align_16
4507                 enable fast_64bit
4508                 enable fast_clz
4509                 enable fast_cmov
4510                 enable fast_unaligned
4511                 disable aligned_stack
4512                 disable mipsfpu
4513                 disable mipsdsp
4514                 disable mipsdspr2
4515                 case $cpu in
4516                     loongson3*)
4517                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4518                     ;;
4519                     loongson2e)
4520                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4521                     ;;
4522                     loongson2f)
4523                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4524                     ;;
4525                 esac
4526             ;;
4527             *)
4528                 # Unknown CPU. Disable everything.
4529                 warn "unknown CPU. Disabling all MIPS optimizations."
4530                 disable mipsfpu
4531                 disable mipsdsp
4532                 disable mipsdspr2
4533                 disable msa
4534                 disable mmi
4535             ;;
4536         esac
4537
4538         case $cpu in
4539             24kc)
4540                 disable mipsfpu
4541                 disable mipsdsp
4542                 disable mipsdspr2
4543             ;;
4544             24kf*)
4545                 disable mipsdsp
4546                 disable mipsdspr2
4547             ;;
4548             24kec|34kc|1004kc)
4549                 disable mipsfpu
4550                 disable mipsdspr2
4551             ;;
4552             24kef*|34kf*|1004kf*)
4553                 disable mipsdspr2
4554             ;;
4555             74kc)
4556                 disable mipsfpu
4557             ;;
4558             p5600)
4559                 enable mips32r5
4560                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4561             ;;
4562             i6400)
4563                 enable mips64r6
4564                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4565             ;;
4566             p6600)
4567                 enable mips64r6
4568                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4569             ;;
4570         esac
4571     else
4572         # We do not disable anything. Is up to the user to disable the unwanted features.
4573         warn 'generic cpu selected'
4574     fi
4575
4576 elif enabled ppc; then
4577
4578     disable ldbrx
4579
4580     case $(tolower $cpu) in
4581         601|ppc601|powerpc601)
4582             cpuflags="-mcpu=601"
4583             disable altivec
4584         ;;
4585         603*|ppc603*|powerpc603*)
4586             cpuflags="-mcpu=603"
4587             disable altivec
4588         ;;
4589         604*|ppc604*|powerpc604*)
4590             cpuflags="-mcpu=604"
4591             disable altivec
4592         ;;
4593         g3|75*|ppc75*|powerpc75*)
4594             cpuflags="-mcpu=750"
4595             disable altivec
4596         ;;
4597         g4|745*|ppc745*|powerpc745*)
4598             cpuflags="-mcpu=7450"
4599             disable vsx
4600         ;;
4601         74*|ppc74*|powerpc74*)
4602             cpuflags="-mcpu=7400"
4603             disable vsx
4604         ;;
4605         g5|970|ppc970|powerpc970)
4606             cpuflags="-mcpu=970"
4607             disable vsx
4608         ;;
4609         power[3-6]*)
4610             cpuflags="-mcpu=$cpu"
4611             disable vsx
4612         ;;
4613         power[7-8]*)
4614             cpuflags="-mcpu=$cpu"
4615         ;;
4616         cell)
4617             cpuflags="-mcpu=cell"
4618             enable ldbrx
4619             disable vsx
4620         ;;
4621         e500mc)
4622             cpuflags="-mcpu=e500mc"
4623             disable altivec
4624         ;;
4625         e500v2)
4626             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4627             disable altivec
4628             disable dcbzl
4629         ;;
4630         e500)
4631             cpuflags="-mcpu=8540 -mhard-float"
4632             disable altivec
4633             disable dcbzl
4634         ;;
4635     esac
4636
4637 elif enabled sparc; then
4638
4639     case $cpu in
4640         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4641             cpuflags="-mcpu=$cpu"
4642         ;;
4643         ultrasparc*|niagara[234])
4644             cpuflags="-mcpu=$cpu"
4645         ;;
4646     esac
4647
4648 elif enabled x86; then
4649
4650     case $cpu in
4651         i[345]86|pentium)
4652             cpuflags="-march=$cpu"
4653             disable i686
4654             disable mmx
4655         ;;
4656         # targets that do NOT support nopl and conditional mov (cmov)
4657         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4658             cpuflags="-march=$cpu"
4659             disable i686
4660         ;;
4661         # targets that do support nopl and conditional mov (cmov)
4662         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4663         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4664         |amdfam10|barcelona|b[dt]ver*|znver*)
4665             cpuflags="-march=$cpu"
4666             enable i686
4667             enable fast_cmov
4668         ;;
4669         # targets that do support conditional mov but on which it's slow
4670         pentium4|pentium4m|prescott|nocona)
4671             cpuflags="-march=$cpu"
4672             enable i686
4673             disable fast_cmov
4674         ;;
4675     esac
4676
4677 fi
4678
4679 if [ "$cpu" != generic ]; then
4680     add_cflags  $cpuflags
4681     add_asflags $cpuflags
4682     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4683 fi
4684
4685 # compiler sanity check
4686 check_exec <<EOF
4687 int main(void){ return 0; }
4688 EOF
4689 if test "$?" != 0; then
4690     echo "$cc is unable to create an executable file."
4691     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4692         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4693         echo "Only do this if you know what cross compiling means."
4694     fi
4695     die "C compiler test failed."
4696 fi
4697
4698 add_cppflags -D_ISOC99_SOURCE
4699 add_cxxflags -D__STDC_CONSTANT_MACROS
4700 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4701
4702 # some compilers silently accept -std=c11, so we also need to check that the
4703 # version macro is defined properly
4704 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4705     add_cflags -std=c11
4706 else
4707     check_cflags -std=c99
4708 fi
4709
4710 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4711 #include <stdlib.h>
4712 EOF
4713 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4714 #include <stdlib.h>
4715 EOF
4716
4717 add_host_cppflags -D_ISOC99_SOURCE
4718 check_host_cflags -std=c99
4719 check_host_cflags -Wall
4720 check_host_cflags -O3
4721
4722 check_64bit(){
4723     arch32=$1
4724     arch64=$2
4725     expr=$3
4726     check_code cc "" "int test[2*($expr) - 1]" &&
4727         subarch=$arch64 || subarch=$arch32
4728 }
4729
4730 case "$arch" in
4731     aarch64|alpha|ia64)
4732         spic=$shared
4733     ;;
4734     mips)
4735         check_64bit mips mips64 '_MIPS_SIM > 1'
4736         spic=$shared
4737     ;;
4738     parisc)
4739         check_64bit parisc parisc64 'sizeof(void *) > 4'
4740         spic=$shared
4741     ;;
4742     ppc)
4743         check_64bit ppc ppc64 'sizeof(void *) > 4'
4744         spic=$shared
4745     ;;
4746     s390)
4747         check_64bit s390 s390x 'sizeof(void *) > 4'
4748         spic=$shared
4749     ;;
4750     sparc)
4751         check_64bit sparc sparc64 'sizeof(void *) > 4'
4752         spic=$shared
4753     ;;
4754     x86)
4755         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4756         # Treat x32 as x64 for now. Note it also needs spic=$shared
4757         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4758             subarch=x86_64
4759         if test "$subarch" = "x86_64"; then
4760             spic=$shared
4761         fi
4762     ;;
4763     ppc)
4764         check_cc <<EOF && subarch="ppc64"
4765         int test[(int)sizeof(char*) - 7];
4766 EOF
4767     ;;
4768 esac
4769
4770 enable $subarch
4771 enabled spic && enable_weak pic
4772
4773 # OS specific
4774 case $target_os in
4775     aix)
4776         SHFLAGS=-shared
4777         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4778         enabled shared && add_ldflags -Wl,-brtl
4779         ;;
4780     android)
4781         disable symver
4782         enable section_data_rel_ro
4783         SLIB_INSTALL_NAME='$(SLIBNAME)'
4784         SLIB_INSTALL_LINKS=
4785         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4786         ;;
4787     haiku)
4788         prefix_default="/boot/common"
4789         network_extralibs="-lnetwork"
4790         host_extralibs=
4791         ;;
4792     sunos)
4793         SHFLAGS='-shared -Wl,-h,$$(@F)'
4794         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4795         network_extralibs="-lsocket -lnsl"
4796         add_cppflags -D__EXTENSIONS__
4797         # When using suncc to build, the Solaris linker will mark
4798         # an executable with each instruction set encountered by
4799         # the Solaris assembler.  As our libraries contain their own
4800         # guards for processor-specific code, instead suppress
4801         # generation of the HWCAPS ELF section on Solaris x86 only.
4802         enabled_all suncc x86 &&
4803             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4804             add_ldflags -Wl,-M,mapfile
4805         nm_default='nm -P -g'
4806         version_script='-M'
4807         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4808         ;;
4809     netbsd)
4810         disable symver
4811         oss_indev_extralibs="-lossaudio"
4812         oss_outdev_extralibs="-lossaudio"
4813         enabled gcc || check_ldflags -Wl,-zmuldefs
4814         ;;
4815     openbsd|bitrig)
4816         disable symver
4817         SHFLAGS='-shared'
4818         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4819         SLIB_INSTALL_LINKS=
4820         oss_indev_extralibs="-lossaudio"
4821         oss_outdev_extralibs="-lossaudio"
4822         ;;
4823     dragonfly)
4824         disable symver
4825         ;;
4826     freebsd)
4827         ;;
4828     bsd/os)
4829         add_extralibs -lpoll -lgnugetopt
4830         strip="strip -d"
4831         ;;
4832     darwin)
4833         enabled ppc && add_asflags -force_cpusubtype_ALL
4834         install_name_dir_default='$(SHLIBDIR)'
4835         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4836         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4837         strip="${strip} -x"
4838         add_ldflags -Wl,-dynamic,-search_paths_first
4839         SLIBSUF=".dylib"
4840         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4841         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4842         objformat="macho"
4843         enabled x86_64 && objformat="macho64"
4844         enabled_any pic shared x86_64 ||
4845             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4846         check_header dispatch/dispatch.h &&
4847             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4848         version_script='-exported_symbols_list'
4849         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4850         ;;
4851     msys*)
4852         die "Native MSYS builds are discouraged, please use the MINGW environment."
4853         ;;
4854     mingw32*|mingw64*)
4855         if test $target_os = "mingw32ce"; then
4856             disable network
4857         else
4858             target_os=mingw32
4859         fi
4860         LIBTARGET=i386
4861         if enabled x86_64; then
4862             LIBTARGET="i386:x86-64"
4863         elif enabled arm; then
4864             LIBTARGET=arm-wince
4865         fi
4866         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4867         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4868         shlibdir_default="$bindir_default"
4869         SLIBPREF=""
4870         SLIBSUF=".dll"
4871         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4872         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4873         dlltool="${cross_prefix}dlltool"
4874         if check_cmd lib.exe -list; then
4875             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4876             if enabled x86_64; then
4877                 LIBTARGET=x64
4878             fi
4879         elif check_cmd $dlltool --version; then
4880             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4881         fi
4882         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4883         SLIB_INSTALL_LINKS=
4884         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4885         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4886         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4887         objformat="win32"
4888         ranlib=:
4889         enable dos_paths
4890         check_ldflags -Wl,--nxcompat,--dynamicbase
4891         # Lets work around some stupidity in binutils.
4892         # ld will strip relocations from executables even though we need them
4893         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4894         # however ld then forgets what the entry point should be (oops) so we
4895         # have to manually (re)set it.
4896         if enabled x86_32; then
4897             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4898         elif enabled x86_64; then
4899             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4900             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4901             # Set image base >4GB for extra entropy with HEASLR
4902             add_ldexeflags -Wl,--image-base,0x140000000
4903             append SHFLAGS -Wl,--image-base,0x180000000
4904         fi
4905         ;;
4906     win32|win64)
4907         disable symver
4908         if enabled shared; then
4909             # Link to the import library instead of the normal static library
4910             # for shared libs.
4911             LD_LIB='%.lib'
4912             # Cannot build both shared and static libs with MSVC or icl.
4913             disable static
4914         fi
4915         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4916         shlibdir_default="$bindir_default"
4917         SLIBPREF=""
4918         SLIBSUF=".dll"
4919         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4920         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4921         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4922         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4923         SLIB_INSTALL_LINKS=
4924         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4925         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4926         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4927         objformat="win32"
4928         ranlib=:
4929         enable dos_paths
4930         ;;
4931     cygwin*)
4932         target_os=cygwin
4933         shlibdir_default="$bindir_default"
4934         SLIBPREF="cyg"
4935         SLIBSUF=".dll"
4936         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4937         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4938         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4939         SLIB_INSTALL_LINKS=
4940         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4941         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4942         objformat="win32"
4943         enable dos_paths
4944         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4945         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4946         ;;
4947     *-dos|freedos|opendos)
4948         network_extralibs="-lsocket"
4949         objformat="coff"
4950         enable dos_paths
4951         add_cppflags -U__STRICT_ANSI__
4952         ;;
4953     linux)
4954         enable dv1394
4955         enable section_data_rel_ro
4956         ;;
4957     irix*)
4958         target_os=irix
4959         ranlib="echo ignoring ranlib"
4960         ;;
4961     os/2*)
4962         strip="lxlite -CS"
4963         objformat="aout"
4964         add_cppflags -D_GNU_SOURCE
4965         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4966         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4967         LIBSUF="_s.a"
4968         SLIBPREF=""
4969         SLIBSUF=".dll"
4970         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4971         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4972         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4973             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4974             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4975             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4976             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4977         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4978             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4979         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4980         SLIB_INSTALL_LINKS=
4981         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4982         enable dos_paths
4983         enable_weak os2threads
4984         ;;
4985     gnu/kfreebsd)
4986         add_cppflags -D_BSD_SOURCE
4987         ;;
4988     gnu)
4989         ;;
4990     qnx)
4991         add_cppflags -D_QNX_SOURCE
4992         network_extralibs="-lsocket"
4993         ;;
4994     symbian)
4995         SLIBSUF=".dll"
4996         enable dos_paths
4997         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4998         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4999         add_ldflags -Wl,--target1-abs,--no-undefined \
5000                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5001                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5002         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5003                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5004                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5005         ;;
5006     osf1)
5007         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
5008         ;;
5009     minix)
5010         ;;
5011     none)
5012         ;;
5013     *)
5014         die "Unknown OS '$target_os'."
5015         ;;
5016 esac
5017
5018 # test if creating links works
5019 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5020 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5021 mkdir "$link_dest"
5022 $ln_s "$link_dest" "$link_name"
5023 touch "$link_dest/test_file"
5024 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5025     # create link to source path
5026     [ -e src ] && rm src
5027     $ln_s "$source_path" src
5028     source_link=src
5029 else
5030     # creating directory links doesn't work
5031     # fall back to using the full source path
5032     source_link="$source_path"
5033 fi
5034 # cleanup
5035 rm -r "$link_dest"
5036 rm -r "$link_name"
5037
5038 # determine libc flavour
5039
5040 probe_libc(){
5041     pfx=$1
5042     pfx_no_=${pfx%_}
5043     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5044     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5045         eval ${pfx}libc_type=uclibc
5046         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5047     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5048         eval ${pfx}libc_type=glibc
5049         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5050     # MinGW headers can be installed on Cygwin, so check for newlib first.
5051     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5052         eval ${pfx}libc_type=newlib
5053         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5054     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5055     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5056         eval ${pfx}libc_type=mingw64
5057         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5058             add_compat msvcrt/snprintf.o
5059             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5060         fi
5061         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5062         eval test \$${pfx_no_}cc_type = "gcc" &&
5063             add_${pfx}cppflags -D__printf__=__gnu_printf__
5064     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5065          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5066         eval ${pfx}libc_type=mingw32
5067         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5068             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5069             die "ERROR: MinGW32 runtime version must be >= 3.15."
5070         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5071         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5072             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5073         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
5074             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5075         eval test \$${pfx_no_}cc_type = "gcc" &&
5076             add_${pfx}cppflags -D__printf__=__gnu_printf__
5077     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5078         eval ${pfx}libc_type=msvcrt
5079         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5080             if [ "$pfx" = host_ ]; then
5081                 add_host_cppflags -Dsnprintf=_snprintf
5082             else
5083                 add_compat strtod.o strtod=avpriv_strtod
5084                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5085                                              _snprintf=avpriv_snprintf  \
5086                                              vsnprintf=avpriv_vsnprintf
5087             fi
5088         fi
5089         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5090         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5091         # 0x601 by default unless something else is set by the user.
5092         # This can easily lead to us detecting functions only present
5093         # in such new versions and producing binaries requiring windows 7.0.
5094         # Therefore explicitly set the default to XP unless the user has
5095         # set something else on the command line.
5096         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5097         # family. For these cases, configure is free to use any functions
5098         # found in the SDK headers by default. (Alternatively, we could force
5099         # _WIN32_WINNT to 0x0602 in that case.)
5100         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5101             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5102 #ifdef WINAPI_FAMILY
5103 #include <winapifamily.h>
5104 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5105 #error not desktop
5106 #endif
5107 #endif
5108 EOF
5109         if [ "$pfx" = "" ]; then
5110             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5111             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5112         fi
5113     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5114         eval ${pfx}libc_type=klibc
5115     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5116         eval ${pfx}libc_type=bionic
5117     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5118         eval ${pfx}libc_type=solaris
5119         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5120     fi
5121     check_${pfx}cc <<EOF
5122 #include <time.h>
5123 void *v = localtime_r;
5124 EOF
5125 test "$?" != 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
5126 #include <time.h>
5127 void *v = localtime_r;
5128 EOF
5129
5130 }
5131
5132 probe_libc
5133 test -n "$libc_type" && enable libc_$libc_type
5134 probe_libc host_
5135 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5136
5137 case $libc_type in
5138     bionic)
5139         add_compat strtod.o strtod=avpriv_strtod
5140         ;;
5141 esac
5142
5143 # hacks for compiler/libc/os combinations
5144
5145 if enabled_all tms470 libc_glibc; then
5146     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5147     add_cppflags -D__USER_LABEL_PREFIX__=
5148     add_cppflags -D__builtin_memset=memset
5149     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5150     add_cflags   -pds=48    # incompatible redefinition of macro
5151 fi
5152
5153 if enabled_all ccc libc_glibc; then
5154     add_ldflags -Wl,-z,now  # calls to libots crash without this
5155 fi
5156
5157 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5158     add_cppflags '-I\$(SRC_PATH)/compat/float'
5159
5160 esc(){
5161     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5162 }
5163
5164 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
5165
5166 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5167
5168 set_default libdir
5169 : ${shlibdir_default:="$libdir"}
5170 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5171
5172 set_default $PATHS_LIST
5173 set_default nm
5174
5175 # we need to build at least one lib type
5176 if ! enabled_any static shared; then
5177     cat <<EOF
5178 At least one library type must be built.
5179 Specify --enable-static to build the static libraries or --enable-shared to
5180 build the shared libraries as well. To only build the shared libraries specify
5181 --disable-static in addition to --enable-shared.
5182 EOF
5183     exit 1
5184 fi
5185
5186 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5187
5188 enable_weak_pic() {
5189     disabled pic && return
5190     enable pic
5191     add_cppflags -DPIC
5192     case "$target_os" in
5193     mingw*|cygwin*)
5194         ;;
5195     *)
5196         add_cflags -fPIC
5197         ;;
5198     esac
5199     add_asflags  -fPIC
5200 }
5201
5202 enabled pic && enable_weak_pic
5203
5204 check_cc <<EOF || die "Symbol mangling check failed."
5205 int ff_extern;
5206 EOF
5207 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5208 extern_prefix=${sym%%ff_extern*}
5209
5210 check_cc <<EOF && enable_weak inline_asm
5211 void foo(void) { __asm__ volatile ("" ::); }
5212 EOF
5213
5214 _restrict=
5215 for restrict_keyword in restrict __restrict__ __restrict; do
5216     check_cc <<EOF && _restrict=$restrict_keyword && break
5217 void foo(char * $restrict_keyword p);
5218 EOF
5219 done
5220
5221 check_cc <<EOF && enable pragma_deprecated
5222 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5223 EOF
5224
5225 check_cc <<EOF && enable attribute_packed
5226 struct { int x; } __attribute__((packed)) x;
5227 EOF
5228
5229 check_cc <<EOF && enable attribute_may_alias
5230 union { int x; } __attribute__((may_alias)) x;
5231 EOF
5232
5233 check_cc <<EOF || die "endian test failed"
5234 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5235 EOF
5236 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5237
5238 if ! enabled ppc64 || enabled bigendian; then
5239     disable vsx
5240 fi
5241
5242 check_gas() {
5243     log "check_gas using '$as' as AS"
5244     # :vararg is used on aarch64, arm and ppc altivec
5245     check_as <<EOF || return 1
5246 .macro m n, y:vararg=0
5247 \n: .int \y
5248 .endm
5249 m x
5250 EOF
5251     # .altmacro is only used in arm asm
5252     ! enabled arm || check_as <<EOF || return 1
5253 .altmacro
5254 EOF
5255     enable gnu_as
5256     return 0
5257 }
5258
5259 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5260     nogas=:
5261     enabled_any arm aarch64 && nogas=die
5262     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5263     as_noop=-v
5264
5265     case $as_type in
5266         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5267         gcc)  gaspp_as_type=gas ;;
5268         *)    gaspp_as_type=$as_type ;;
5269     esac
5270
5271     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5272
5273     test "${as#*gas-preprocessor.pl}" != "$as" ||
5274     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5275         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5276
5277     if ! check_gas ; then
5278         as=${gas:=$as}
5279         check_gas || \
5280             $nogas "GNU assembler not found, install/update gas-preprocessor"
5281     fi
5282
5283     check_as <<EOF && enable as_func
5284 .func test
5285 .endfunc
5286 EOF
5287 fi
5288
5289 check_inline_asm inline_asm_labels '"1:\n"'
5290
5291 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5292
5293 if enabled aarch64; then
5294     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5295     # internal assembler in clang 3.3 does not support this instruction
5296     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5297     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5298
5299     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5300
5301 elif enabled alpha; then
5302
5303     check_cflags -mieee
5304
5305 elif enabled arm; then
5306
5307     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5308
5309     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5310 float func(float a, float b){ return a+b; }
5311 EOF
5312
5313     enabled thumb && check_cflags -mthumb || check_cflags -marm
5314
5315     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5316         enable vfp_args
5317     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5318         enable vfp_args
5319     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5320         case "${cross_prefix:-$cc}" in
5321             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5322             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5323 __asm__ (".eabi_attribute 28, 1");
5324 int main(void) { return 0; }
5325 EOF
5326         esac
5327         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5328     fi
5329
5330     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5331     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5332     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5333     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5334     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5335     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5336     enabled setend  && check_insn setend  'setend be'
5337
5338     [ $target_os = linux ] || [ $target_os = android ] ||
5339         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5340             $ARCH_EXT_LIST_ARM
5341
5342     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5343
5344     check_as <<EOF && enable as_dn_directive
5345 ra .dn d0.i16
5346 .unreq ra
5347 EOF
5348     check_as <<EOF && enable as_fpu_directive
5349 .fpu neon
5350 EOF
5351
5352     # llvm's integrated assembler supports .object_arch from llvm 3.5
5353     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5354 .object_arch armv4
5355 EOF
5356
5357     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5358
5359 elif enabled mips; then
5360
5361     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5362     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5363     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5364
5365     # Enable minimum ISA based on selected options
5366     if enabled mips64; then
5367         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5368         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5369         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5370     else
5371         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5372         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5373         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5374         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5375     fi
5376
5377     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5378     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5379     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5380     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5381     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5382
5383 elif enabled parisc; then
5384
5385     if enabled gcc; then
5386         case $($cc -dumpversion) in
5387             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5388         esac
5389     fi
5390
5391 elif enabled ppc; then
5392
5393     enable local_aligned_8 local_aligned_16 local_aligned_32
5394
5395     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5396     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5397     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5398     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5399
5400     # AltiVec flags: The FSF version of GCC differs from the Apple version
5401     if enabled altivec; then
5402         check_cflags -maltivec -mabi=altivec &&
5403         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5404         check_cflags -faltivec
5405
5406         # check if our compiler supports Motorola AltiVec C API
5407         check_cc <<EOF || disable altivec
5408 $inc_altivec_h
5409 int main(void) {
5410     vector signed int v1 = (vector signed int) { 0 };
5411     vector signed int v2 = (vector signed int) { 1 };
5412     v1 = vec_add(v1, v2);
5413     return 0;
5414 }
5415 EOF
5416
5417         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5418     fi
5419
5420     if enabled vsx; then
5421         check_cflags -mvsx &&
5422         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5423     fi
5424
5425     if enabled power8; then
5426         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5427     fi
5428
5429 elif enabled x86; then
5430
5431     check_builtin rdtsc    intrin.h   "__rdtsc()"
5432     check_builtin mm_empty mmintrin.h "_mm_empty()"
5433
5434     enable local_aligned_8 local_aligned_16 local_aligned_32
5435
5436     # check whether EBP is available on x86
5437     # As 'i' is stored on the stack, this program will crash
5438     # if the base pointer is used to access it because the
5439     # base pointer is cleared in the inline assembly code.
5440     check_exec_crash <<EOF && enable ebp_available
5441 volatile int i=0;
5442 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5443 return i;
5444 EOF
5445
5446     # check whether EBX is available on x86
5447     check_inline_asm ebx_available '""::"b"(0)' &&
5448         check_inline_asm ebx_available '"":::"%ebx"'
5449
5450     # check whether xmm clobbers are supported
5451     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5452
5453     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5454         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5455
5456     # check whether binutils is new enough to compile SSSE3/MMXEXT
5457     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5458     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5459
5460     if ! disabled_any asm mmx yasm; then
5461         if check_cmd $yasmexe --version; then
5462             enabled x86_64 && yasm_extra="-m amd64"
5463             yasm_debug="-g dwarf2"
5464         elif check_cmd nasm -v; then
5465             yasmexe=nasm
5466             yasm_debug="-g -F dwarf"
5467             if enabled x86_64; then
5468                 case "$objformat" in
5469                     elf)   objformat=elf64 ;;
5470                     win32) objformat=win64 ;;
5471                 esac
5472             fi
5473         fi
5474
5475         YASMFLAGS="-f $objformat $yasm_extra"
5476         enabled pic               && append YASMFLAGS "-DPIC"
5477         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5478         case "$objformat" in
5479             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5480         esac
5481
5482         check_yasm "movbe ecx, [5]" && enable yasm ||
5483             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5484         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5485         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5486         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5487         check_yasm "CPU amdnop" || disable cpunop
5488     fi
5489
5490     case "$cpu" in
5491         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5492             disable fast_clz
5493         ;;
5494     esac
5495
5496 fi
5497
5498 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5499
5500 check_ldflags -Wl,--as-needed
5501 check_ldflags -Wl,-z,noexecstack
5502
5503 if check_func dlopen && check_func dlsym; then
5504     ldl=
5505 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5506     ldl=-ldl
5507 fi
5508
5509 avisynth_demuxer_extralibs='$ldl'
5510 cuda_extralibs='$ldl'
5511 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5512 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5513 frei0r_filter_extralibs='$ldl'
5514 frei0r_src_filter_extralibs='$ldl'
5515 ladspa_filter_extralibs='$ldl'
5516 nvenc_extralibs='$ldl'
5517 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5518 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5519
5520 if ! disabled network; then
5521     check_func getaddrinfo $network_extralibs
5522     check_func inet_aton $network_extralibs
5523
5524     check_type netdb.h "struct addrinfo"
5525     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5526     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5527     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5528     check_type poll.h "struct pollfd"
5529     check_type netinet/sctp.h "struct sctp_event_subscribe"
5530     check_struct "sys/socket.h" "struct msghdr" msg_flags
5531     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5532     check_type netinet/in.h "struct sockaddr_in6"
5533     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5534     check_type "sys/types.h sys/socket.h" socklen_t
5535
5536     # Prefer arpa/inet.h over winsock2
5537     if check_header arpa/inet.h ; then
5538         check_func closesocket
5539     elif check_header winsock2.h ; then
5540         check_func_headers winsock2.h closesocket -lws2 &&
5541             network_extralibs="-lws2" ||
5542         { check_func_headers winsock2.h closesocket -lws2_32 &&
5543             network_extralibs="-lws2_32"; } || disable winsock2_h network
5544         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5545
5546         check_type ws2tcpip.h socklen_t
5547         check_type ws2tcpip.h "struct addrinfo"
5548         check_type ws2tcpip.h "struct group_source_req"
5549         check_type ws2tcpip.h "struct ip_mreq_source"
5550         check_type ws2tcpip.h "struct ipv6_mreq"
5551         check_type winsock2.h "struct pollfd"
5552         check_struct winsock2.h "struct sockaddr" sa_len
5553         check_type ws2tcpip.h "struct sockaddr_in6"
5554         check_type ws2tcpip.h "struct sockaddr_storage"
5555     else
5556         disable network
5557     fi
5558 fi
5559
5560 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5561 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5562 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5563 check_builtin sarestart signal.h "SA_RESTART"
5564 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5565 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5566 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5567 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5568 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5569
5570 case "$custom_allocator" in
5571     jemalloc)
5572         # jemalloc by default does not use a prefix
5573         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5574     ;;
5575     tcmalloc)
5576         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5577         malloc_prefix=tc_
5578     ;;
5579 esac
5580
5581 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5582 check_func  ${malloc_prefix}memalign            && enable memalign
5583 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5584
5585 check_func  access
5586 check_func_headers stdlib.h arc4random
5587 check_func_headers time.h clock_gettime ||
5588     { check_lib clock_gettime time.h clock_gettime -lrt && LIBRT="-lrt"; }
5589 check_func  fcntl
5590 check_func  fork
5591 check_func  gethrtime
5592 check_func  getopt
5593 check_func  getrusage
5594 check_func  gettimeofday
5595 check_func  isatty
5596 check_func  mach_absolute_time
5597 check_func  mkstemp
5598 check_func  mmap
5599 check_func  mprotect
5600 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5601 check_func_headers time.h nanosleep ||
5602     { check_lib nanosleep time.h nanosleep -lrt && LIBRT="-lrt"; }
5603 check_func  sched_getaffinity
5604 check_func  setrlimit
5605 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5606 check_func  strerror_r
5607 check_func  sysconf
5608 check_func  sysctl
5609 check_func  usleep
5610
5611 check_func_headers conio.h kbhit
5612 check_func_headers io.h setmode
5613 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5614 check_func_headers stdlib.h getenv
5615 check_func_headers sys/stat.h lstat
5616
5617 check_func_headers windows.h GetProcessAffinityMask
5618 check_func_headers windows.h GetProcessTimes
5619 check_func_headers windows.h GetSystemTimeAsFileTime
5620 check_func_headers windows.h LoadLibrary
5621 check_func_headers windows.h MapViewOfFile
5622 check_func_headers windows.h PeekNamedPipe
5623 check_func_headers windows.h SetConsoleTextAttribute
5624 check_func_headers windows.h SetConsoleCtrlHandler
5625 check_func_headers windows.h Sleep
5626 check_func_headers windows.h VirtualAlloc
5627 check_struct windows.h "CONDITION_VARIABLE" Ptr
5628 check_func_headers glob.h glob
5629 enabled xlib &&
5630     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5631
5632 check_header AudioToolbox/AudioToolbox.h
5633 check_header d3d11.h
5634 check_header direct.h
5635 check_header dirent.h
5636 check_header dlfcn.h
5637 check_header dxva.h
5638 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5639 check_header io.h
5640 check_header libcrystalhd/libcrystalhd_if.h
5641 check_header mach/mach_time.h
5642 check_header malloc.h
5643 check_header net/udplite.h
5644 check_header poll.h
5645 check_header sys/mman.h
5646 check_header sys/param.h
5647 check_header sys/resource.h
5648 check_header sys/select.h
5649 check_header sys/time.h
5650 check_header sys/un.h
5651 check_header termios.h
5652 check_header unistd.h
5653 check_header valgrind/valgrind.h
5654 check_header VideoDecodeAcceleration/VDADecoder.h
5655 check_header VideoToolbox/VideoToolbox.h
5656 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5657 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5658 check_header windows.h
5659 check_header X11/extensions/XvMClib.h
5660 check_header asm/types.h
5661
5662 # it seems there are versions of clang in some distros that try to use the
5663 # gcc headers, which explodes for stdatomic
5664 # so we also check that atomics actually work here
5665 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5666
5667 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5668 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5669 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5670
5671 check_lib coreservices "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5672
5673 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5674
5675 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5676 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5677 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5678 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5679 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5680
5681 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5682 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5683 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5684 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5685 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5686 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5687 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5688 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5689
5690 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5691
5692 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5693
5694 if ! disabled w32threads && ! enabled pthreads; then
5695     check_func_headers "windows.h process.h" _beginthreadex &&
5696         enable w32threads || disable w32threads
5697     if ! enabled w32threads && enabled winrt; then
5698         check_func_headers "windows.h" CreateThread &&
5699             enable w32threads || disable w32threads
5700     fi
5701 fi
5702
5703 # check for some common methods of building with pthread support
5704 # do this before the optional library checks as some of them require pthreads
5705 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5706     if check_lib pthreads pthread.h pthread_join   -pthread &&
5707        check_lib pthreads pthread.h pthread_create -pthread; then
5708         add_cflags -pthread
5709     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5710          check_lib pthreads pthread.h pthread_create -pthreads; then
5711         add_cflags -pthreads
5712     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5713          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5714         add_cflags -ldl -pthread
5715     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5716          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5717         :
5718     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5719          check_lib pthreads pthread.h pthread_create -lpthread; then
5720         :
5721     elif check_func pthread_join && check_func pthread_create; then
5722         enable pthreads
5723     fi
5724     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5725 fi
5726
5727
5728 if enabled pthreads; then
5729   check_func pthread_cancel
5730 fi
5731
5732 enabled pthreads &&
5733     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5734
5735 disabled  zlib || check_lib zlib   zlib.h      zlibVersion    -lz
5736 disabled bzlib || check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5737 disabled  lzma || check_lib lzma   lzma.h lzma_version_number -llzma
5738
5739 check_lib libm math.h sin -lm && LIBM="-lm"
5740 disabled crystalhd || check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
5741
5742 atan2f_args=2
5743 copysign_args=2
5744 hypot_args=2
5745 ldexpf_args=2
5746 powf_args=2
5747
5748 for func in $MATH_FUNCS; do
5749     eval check_mathfunc $func \${${func}_args:-1} $LIBM
5750 done
5751
5752 for func in $COMPLEX_FUNCS; do
5753     eval check_complexfunc $func \${${func}_args:-1}
5754 done
5755
5756 # these are off by default, so fail if requested and not available
5757 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5758 enabled avfoundation_indev && { check_lib avfoundation_indev CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5759                                 check_lib avfoundation_indev ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5760 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5761 enabled cuvid             && { enabled cuda ||
5762                                die "ERROR: CUVID requires CUDA"; }
5763 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5764 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5765 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5766 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5767                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5768 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5769 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5770 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5771 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
5772                                check_lib jni "dlfcn.h" dlopen -ldl || die "ERROR: jni not found"; }
5773 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5774 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5775 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5776 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5777 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5778 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5779                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5780                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5781 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5782 enabled libdc1394         && require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new
5783 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5784                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5785                                  warn "using libfdk without pkg-config"; } }
5786 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"
5787 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5788 enabled fontconfig        && enable libfontconfig
5789 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5790 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5791 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5792 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5793 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5794                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5795                                done || die "ERROR: libgsm not found"; }
5796 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5797 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5798 # While it may appear that require is being used as a pkg-config
5799 # fallback for libmfx, it is actually being used to detect a different
5800 # installation route altogether.  If libmfx is installed via the Intel
5801 # Media SDK or Intel Media Server Studio, these don't come with
5802 # pkg-config support.  Instead, users should make sure that the build
5803 # can find the libraries and headers through other means.
5804 enabled libmfx            && { use_pkg_config libmfx "mfx/mfxvideo.h" MFXInit ||
5805                                { require libmfx "mfx/mfxvideo.h" MFXInit -llibmfx && warn "using libmfx without pkg-config"; } }
5806 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5807 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5808 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5809 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5810 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5811 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5812 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5813                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5814                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5815                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5816 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5817 enabled libopenjpeg       && { { check_lib libopenjpeg openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5818                                check_lib libopenjpeg openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5819                                { check_lib libopenjpeg openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5820                                { check_lib libopenjpeg openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5821                                { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5822                                die "ERROR: libopenjpeg not found"; }
5823 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5824 enabled libopus           && {
5825     enabled libopus_decoder && {
5826         require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5827     }
5828     enabled libopus_encoder && {
5829         require_pkg_config opus opus_multistream.h opus_multistream_surround_encoder_create
5830     }
5831 }
5832 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5833 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5834 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5835 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5836 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5837 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5838                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5839 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
5840 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5841 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5842 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5843 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5844 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5845 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5846                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5847                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5848 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5849 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5850 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5851 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5852
5853 enabled libvpx            && {
5854     enabled libvpx_vp8_decoder && {
5855         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5856             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5857                 die "ERROR: libvpx decoder version must be >=0.9.1";
5858     }
5859     enabled libvpx_vp8_encoder && {
5860         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5861             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5862                 die "ERROR: libvpx encoder version must be >=0.9.7";
5863     }
5864     enabled libvpx_vp9_decoder && {
5865         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5866             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx
5867     }
5868     enabled libvpx_vp9_encoder && {
5869         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5870             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx
5871     }
5872     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5873         die "libvpx enabled but no supported decoders found"
5874     fi
5875 }
5876
5877 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5878 enabled libwebp           && {
5879     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5880     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5881 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5882                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
5883                                  warn "using libx264 without pkg-config"; } } &&
5884                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5885                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5886                              { check_cpp_condition x264.h "X264_MPEG2" &&
5887                                enable libx262; }
5888 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5889                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5890                                die "ERROR: libx265 version must be >= 68."; }
5891 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
5892 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5893 enabled libzimg           && require_pkg_config "zimg >= 2.3.0" zimg.h zimg_get_api_version
5894 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5895 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5896                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5897                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5898 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5899 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5900                                { ! enabled cross_compile &&
5901                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
5902                                  add_ldflags -L/opt/vc/lib/ &&
5903                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
5904                                die "ERROR: mmal not found" &&
5905                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
5906 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5907 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5908                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
5909                                die "ERROR: openal not found"; } &&
5910                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5911                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5912 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5913                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5914                                die "ERROR: opencl not found"; } &&
5915                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5916                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5917                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5918 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
5919                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5920                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5921                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5922                                die "ERROR: opengl not found."
5923                              }
5924 enabled omx_rpi           && { check_header OMX_Core.h ||
5925                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
5926                                die "ERROR: OpenMAX IL headers not found"; }
5927 enabled omx               && { check_header OMX_Core.h || die "ERROR: OpenMAX IL headers not found"; }
5928 enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
5929                                use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5930                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5931                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5932                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5933                                die "ERROR: openssl not found"; }
5934 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5935
5936 if enabled gcrypt; then
5937     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5938     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5939         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5940         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
5941         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
5942             die "ERROR: gcrypt not found"
5943         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_extralibs
5944     else
5945         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5946     fi
5947 fi
5948
5949 disabled sdl && disable sdl2
5950 if ! disabled sdl2; then
5951     SDL2_CONFIG="${cross_prefix}sdl2-config"
5952     if check_pkg_config sdl2 SDL_events.h SDL_PollEvent; then
5953         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5954         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5955         check_func SDL_Init $sdl2_extralibs $sdl2_cflags && enable sdl2
5956     else
5957       if "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
5958         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
5959         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
5960         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5961         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5962         check_func SDL_Init $sdl2_extralibs $sdl2_cflags && enable sdl2
5963       fi
5964     fi
5965     if test $target_os = "mingw32"; then
5966         sdl2_extralibs="$sdl2_extralibs -mconsole"
5967     fi
5968 fi
5969 enabled sdl2 && enable sdl && add_cflags $sdl2_cflags && add_extralibs $sdl2_extralibs
5970
5971 if enabled decklink; then
5972     case $target_os in
5973         mingw32*|mingw64*|win32|win64)
5974             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
5975             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
5976             ;;
5977     esac
5978 fi
5979
5980 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5981     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security"; }
5982
5983 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
5984                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
5985
5986 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5987 enabled makeinfo \
5988     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5989     && enable makeinfo_html || disable makeinfo_html
5990 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5991 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5992 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5993 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5994
5995 check_header linux/fb.h
5996 check_header linux/videodev.h
5997 check_header linux/videodev2.h
5998 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5999
6000 check_header sys/videoio.h
6001 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
6002
6003 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6004 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6005 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6006 # w32api 3.12 had it defined wrong
6007 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6008
6009 check_type "dshow.h" IBaseFilter
6010
6011 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6012 { check_header dev/bktr/ioctl_meteor.h &&
6013   check_header dev/bktr/ioctl_bt848.h; } ||
6014 { check_header machine/ioctl_meteor.h &&
6015   check_header machine/ioctl_bt848.h; } ||
6016 { check_header dev/video/meteor/ioctl_meteor.h &&
6017   check_header dev/video/bktr/ioctl_bt848.h; } ||
6018 check_header dev/ic/bt8xx.h
6019
6020 if check_struct sys/soundcard.h audio_buf_info bytes; then
6021     enable_safe sys/soundcard.h
6022 else
6023     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
6024     #include <sys/soundcard.h>
6025     audio_buf_info abc;
6026 EOF
6027 fi
6028 check_header soundcard.h
6029
6030 enabled_any alsa_indev alsa_outdev &&
6031     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6032
6033 enabled jack_indev && check_lib jack jack/jack.h jack_client_open -ljack &&
6034     check_func jack_port_get_latency_range -ljack
6035
6036 enabled_any sndio_indev sndio_outdev && check_lib sndio sndio.h sio_open -lsndio
6037
6038 if enabled libcdio; then
6039     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6040     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6041     die "ERROR: No usable libcdio/cdparanoia found"
6042 fi
6043
6044 if ! disabled libxcb; then
6045     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
6046         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
6047     } && enable libxcb
6048
6049 if enabled libxcb; then
6050     disabled libxcb_shm || {
6051         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
6052             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
6053         } && check_header sys/shm.h && enable libxcb_shm; }
6054
6055     disabled libxcb_xfixes || {
6056         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
6057             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
6058         } && enable libxcb_xfixes; }
6059
6060     disabled libxcb_shape || {
6061         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
6062             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
6063         } && enable libxcb_shape; }
6064
6065     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
6066     add_extralibs $xcb_extralibs $xcb_shm_extralibs $xcb_xfixes_extralibs $xcb_shape_extralibs
6067 fi
6068 fi
6069
6070 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6071
6072 enabled dxva2api_h &&
6073     check_cc <<EOF && enable dxva2api_cobj
6074 #define _WIN32_WINNT 0x0600
6075 #define COBJMACROS
6076 #include <windows.h>
6077 #include <d3d9.h>
6078 #include <dxva2api.h>
6079 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
6080 EOF
6081
6082 enabled dxva2 &&
6083     check_lib dxva2_lib windows.h CoTaskMemFree -lole32
6084
6085 enabled vaapi &&
6086     check_lib vaapi va/va.h vaInitialize -lva
6087
6088 enabled vaapi &&
6089     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6090     disable vaapi
6091
6092 enabled vaapi &&
6093     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6094
6095 enabled vaapi &&
6096     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6097
6098 enabled vdpau &&
6099     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6100     disable vdpau
6101
6102 enabled vdpau &&
6103     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6104
6105 if enabled x86; then
6106     case $target_os in
6107         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6108             ;;
6109         *)
6110             disable cuda cuvid nvenc
6111             ;;
6112     esac
6113 else
6114     disable cuda cuvid nvenc
6115 fi
6116
6117 enabled nvenc &&
6118     check_cc -I$source_path <<EOF || disable nvenc
6119 #include "compat/nvenc/nvEncodeAPI.h"
6120 NV_ENCODE_API_FUNCTION_LIST flist;
6121 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6122 int main(void) { return 0; }
6123 EOF
6124
6125 # Funny iconv installations are not unusual, so check it after all flags have been set
6126 disabled iconv || check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6127
6128 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6129
6130 # add some useful compiler flags if supported
6131 check_cflags -Wdeclaration-after-statement
6132 check_cflags -Wall
6133 check_cflags -Wdisabled-optimization
6134 check_cflags -Wpointer-arith
6135 check_cflags -Wredundant-decls
6136 check_cflags -Wwrite-strings
6137 check_cflags -Wtype-limits
6138 check_cflags -Wundef
6139 check_cflags -Wmissing-prototypes
6140 check_cflags -Wno-pointer-to-int-cast
6141 check_cflags -Wstrict-prototypes
6142 check_cflags -Wempty-body
6143
6144 if enabled extra_warnings; then
6145     check_cflags -Wcast-qual
6146     check_cflags -Wextra
6147     check_cflags -Wpedantic
6148 fi
6149
6150 check_disable_warning(){
6151     warning_flag=-W${1#-Wno-}
6152     test_cflags $warning_flag && add_cflags $1
6153 }
6154
6155 check_disable_warning -Wno-parentheses
6156 check_disable_warning -Wno-switch
6157 check_disable_warning -Wno-format-zero-length
6158 check_disable_warning -Wno-pointer-sign
6159 check_disable_warning -Wno-unused-const-variable
6160
6161 check_disable_warning_headers(){
6162     warning_flag=-W${1#-Wno-}
6163     test_cflags $warning_flag && add_cflags_headers $1
6164 }
6165
6166 check_disable_warning_headers -Wno-deprecated-declarations
6167 check_disable_warning_headers -Wno-unused-variable
6168
6169 # add some linker flags
6170 check_ldflags -Wl,--warn-common
6171 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6172 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6173 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6174 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6175
6176 # add some strip flags
6177 # -wN '..@*' is more selective than -x, but not available everywhere.
6178 check_stripflags -wN \'..@*\' || check_stripflags -x
6179
6180 enabled neon_clobber_test &&
6181     check_ldflags -Wl,--wrap,avcodec_open2              \
6182                   -Wl,--wrap,avcodec_decode_audio4      \
6183                   -Wl,--wrap,avcodec_decode_video2      \
6184                   -Wl,--wrap,avcodec_decode_subtitle2   \
6185                   -Wl,--wrap,avcodec_encode_audio2      \
6186                   -Wl,--wrap,avcodec_encode_video2      \
6187                   -Wl,--wrap,avcodec_encode_subtitle    \
6188                   -Wl,--wrap,avcodec_send_packet        \
6189                   -Wl,--wrap,avcodec_receive_packet     \
6190                   -Wl,--wrap,avcodec_send_frame         \
6191                   -Wl,--wrap,avcodec_receive_frame      \
6192                   -Wl,--wrap,swr_convert                \
6193                   -Wl,--wrap,avresample_convert ||
6194     disable neon_clobber_test
6195
6196 enabled xmm_clobber_test &&
6197     check_ldflags -Wl,--wrap,avcodec_open2              \
6198                   -Wl,--wrap,avcodec_decode_audio4      \
6199                   -Wl,--wrap,avcodec_decode_video2      \
6200                   -Wl,--wrap,avcodec_decode_subtitle2   \
6201                   -Wl,--wrap,avcodec_encode_audio2      \
6202                   -Wl,--wrap,avcodec_encode_video2      \
6203                   -Wl,--wrap,avcodec_encode_subtitle    \
6204                   -Wl,--wrap,avcodec_send_packet        \
6205                   -Wl,--wrap,avcodec_receive_packet     \
6206                   -Wl,--wrap,avcodec_send_frame         \
6207                   -Wl,--wrap,avcodec_receive_frame      \
6208                   -Wl,--wrap,swr_convert                \
6209                   -Wl,--wrap,avresample_convert         \
6210                   -Wl,--wrap,sws_scale ||
6211     disable xmm_clobber_test
6212
6213 check_ld "cc" <<EOF && enable proper_dce
6214 extern const int array[512];
6215 static inline int func(void) { return array[0]; }
6216 int main(void) { return 0; }
6217 EOF
6218
6219 if enabled proper_dce; then
6220     echo "X { local: *; };" > $TMPV
6221     if test_ldflags -Wl,${version_script},$TMPV; then
6222         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6223         check_cc <<EOF && enable symver_asm_label
6224 void ff_foo(void) __asm__ ("av_foo@VERSION");
6225 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6226 EOF
6227         check_cc <<EOF && enable symver_gnu_asm
6228 __asm__(".symver ff_foo,av_foo@VERSION");
6229 void ff_foo(void) {}
6230 EOF
6231     fi
6232 fi
6233
6234 if [ -z "$optflags" ]; then
6235     if enabled small; then
6236         optflags=$cflags_size
6237     elif enabled optimizations; then
6238         optflags=$cflags_speed
6239     else
6240         optflags=$cflags_noopt
6241     fi
6242 fi
6243
6244 check_optflags(){
6245     check_cflags "$@"
6246     enabled lto && check_ldflags "$@"
6247 }
6248
6249
6250 if enabled lto; then
6251     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6252     check_cflags  -flto
6253     check_ldflags -flto $cpuflags
6254     disable inline_asm_direct_symbol_refs
6255 fi
6256
6257 check_optflags $optflags
6258 check_optflags -fno-math-errno
6259 check_optflags -fno-signed-zeros
6260
6261 enabled ftrapv && check_cflags -ftrapv
6262
6263 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6264 int x;
6265 EOF
6266
6267
6268 if enabled icc; then
6269     # Just warnings, no remarks
6270     check_cflags -w1
6271     # -wd: Disable following warnings
6272     # 144, 167, 556: -Wno-pointer-sign
6273     # 188: enumerated type mixed with another type
6274     # 1292: attribute "foo" ignored
6275     # 1419: external declaration in primary source file
6276     # 10006: ignoring unknown option -fno-signed-zeros
6277     # 10148: ignoring unknown option -Wno-parentheses
6278     # 10156: ignoring option '-W'; no argument required
6279     # 13200: No EMMS instruction before call to function
6280     # 13203: No EMMS instruction before return from function
6281     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6282     # 11030: Warning unknown option --as-needed
6283     # 10156: ignoring option '-export'; no argument required
6284     check_ldflags -wd10156,11030
6285     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6286     enable ebp_available
6287     # The test above does not test linking
6288     enabled lto && disable symver_asm_label
6289     if enabled x86_32; then
6290         icc_version=$($cc -dumpversion)
6291         test ${icc_version%%.*} -ge 11 &&
6292             check_cflags -falign-stack=maintain-16-byte ||
6293             disable aligned_stack
6294     fi
6295 elif enabled ccc; then
6296     # disable some annoying warnings
6297     add_cflags -msg_disable bitnotint
6298     add_cflags -msg_disable mixfuncvoid
6299     add_cflags -msg_disable nonstandcast
6300     add_cflags -msg_disable unsupieee
6301 elif enabled gcc; then
6302     check_optflags -fno-tree-vectorize
6303     check_cflags -Werror=format-security
6304     check_cflags -Werror=implicit-function-declaration
6305     check_cflags -Werror=missing-prototypes
6306     check_cflags -Werror=return-type
6307     check_cflags -Werror=vla
6308     check_cflags -Wformat
6309     check_cflags -fdiagnostics-color=auto
6310     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6311 elif enabled llvm_gcc; then
6312     check_cflags -mllvm -stack-alignment=16
6313 elif enabled clang; then
6314     check_cflags -mllvm -stack-alignment=16
6315     check_cflags -mstack-alignment=16
6316     check_cflags -Qunused-arguments
6317     check_cflags -Werror=implicit-function-declaration
6318     check_cflags -Werror=missing-prototypes
6319     check_cflags -Werror=return-type
6320 elif enabled cparser; then
6321     add_cflags -Wno-missing-variable-declarations
6322     add_cflags -Wno-empty-statement
6323 elif enabled armcc; then
6324     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6325     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6326     # 2523: use of inline assembly is deprecated
6327     add_cflags -W${armcc_opt},--diag_suppress=2523
6328     add_cflags -W${armcc_opt},--diag_suppress=1207
6329     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6330     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6331     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6332     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6333 elif enabled tms470; then
6334     add_cflags -pds=824 -pds=837
6335     disable inline_asm
6336 elif enabled pathscale; then
6337     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6338 elif enabled_any msvc icl; then
6339     enabled x86_32 && disable aligned_stack
6340     enabled_all x86_32 debug && add_cflags -Oy-
6341     enabled debug && add_ldflags -debug
6342     enable pragma_deprecated
6343     if enabled icl; then
6344         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6345         # (correctly) on icl 13.x.
6346         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6347             add_cflags -Qansi-alias
6348         # Some inline asm is not compilable in debug
6349         if enabled debug; then
6350             disable ebp_available
6351             disable ebx_available
6352         fi
6353     fi
6354     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6355     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6356     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6357     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6358     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6359     # MSVC 2013 and newer can handle it fine.
6360     # If this declspec fails, force including stdlib.h before the restrict redefinition
6361     # happens in config.h.
6362     if [ $_restrict != restrict ]; then
6363         check_cc <<EOF || add_cflags -FIstdlib.h
6364 __declspec($_restrict) void* foo(int);
6365 EOF
6366     fi
6367     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6368     # Issue has been fixed in MSVC v19.00.24218.
6369     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6370         check_cflags -d2SSAOptimizer-
6371     # enable utf-8 source processing on VS2015 U2 and newer
6372     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6373         add_cflags -utf-8
6374 fi
6375
6376 for pfx in "" host_; do
6377     varname=${pfx%_}cc_type
6378     eval "type=\$$varname"
6379     if [ $type = "msvc" ]; then
6380         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6381 static inline int foo(int a) { return a; }
6382 EOF
6383     fi
6384 done
6385
6386 case $as_type in
6387     clang)
6388         add_asflags -Qunused-arguments
6389     ;;
6390 esac
6391
6392 case $ld_type in
6393     clang)
6394         check_ldflags -Qunused-arguments
6395     ;;
6396 esac
6397
6398 case $target_os in
6399     osf1)
6400         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6401     ;;
6402 esac
6403
6404 enable frame_thread_encoder
6405
6406 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6407
6408 check_deps $CONFIG_LIST       \
6409            $CONFIG_EXTRA      \
6410            $HAVE_LIST         \
6411            $ALL_COMPONENTS    \
6412
6413 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"
6414
6415
6416 if test $target_os = "haiku"; then
6417     disable memalign
6418     disable posix_memalign
6419 fi
6420
6421 # add_dep lib dep
6422 # -> enable ${lib}_deps_${dep}
6423 # -> add $dep to ${lib}_deps only once
6424 add_dep() {
6425     lib=$1
6426     dep=$2
6427     enabled "${lib}_deps_${dep}" && return 0
6428     enable  "${lib}_deps_${dep}"
6429     prepend "${lib}_deps" $dep
6430 }
6431
6432 # merge deps lib components
6433 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6434 merge_deps() {
6435     lib=$1
6436     shift
6437     for comp in $*; do
6438         enabled $comp || continue
6439         eval "dep=\"\$${comp}_deps\""
6440         for d in $dep; do
6441             add_dep $lib $d
6442         done
6443     done
6444 }
6445
6446 merge_deps libavfilter $FILTER_LIST
6447
6448 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6449
6450 for thread in $THREADS_LIST; do
6451     if enabled $thread; then
6452         test -n "$thread_type" &&
6453             die "ERROR: Only one thread type must be selected." ||
6454             thread_type="$thread"
6455     fi
6456 done
6457
6458 if disabled stdatomic_h; then
6459     if enabled atomics_gcc; then
6460         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6461     elif enabled atomics_win32; then
6462         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6463     elif enabled atomics_suncc; then
6464         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6465     elif enabled pthreads; then
6466         add_compat atomics/pthread/stdatomic.o
6467         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6468     else
6469         enabled threads && die "Threading is enabled, but no atomics are available"
6470         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6471     fi
6472 fi
6473
6474 # Check if requested libraries were found.
6475 for lib in $AUTODETECT_LIBS; do
6476     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6477 done
6478
6479 enabled zlib && add_cppflags -DZLIB_CONST
6480
6481 # conditional library dependencies, in linking order
6482 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6483 enabled afir_filter         && prepend avfilter_deps "avcodec"
6484 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6485 enabled aresample_filter    && prepend avfilter_deps "swresample"
6486 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6487 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6488 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6489 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6490 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6491 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6492 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6493 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6494 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6495 enabled pan_filter          && prepend avfilter_deps "swresample"
6496 enabled pp_filter           && prepend avfilter_deps "postproc"
6497 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6498 enabled resample_filter && prepend avfilter_deps "avresample"
6499 enabled sab_filter          && prepend avfilter_deps "swscale"
6500 enabled scale_filter    && prepend avfilter_deps "swscale"
6501 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6502 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6503 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6504 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6505 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6506 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6507 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6508 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6509 enabled spp_filter          && prepend avfilter_deps "avcodec"
6510 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6511 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6512 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6513
6514 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6515
6516 enabled opus_decoder    && prepend avcodec_deps "swresample"
6517
6518 expand_deps(){
6519     lib_deps=${1}_deps
6520     eval "deps=\$$lib_deps"
6521     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6522     unique $lib_deps
6523 }
6524
6525 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6526 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6527
6528 map 'expand_deps $v' $LIBRARY_LIST
6529
6530 license="LGPL version 2.1 or later"
6531 if enabled nonfree; then
6532     license="nonfree and unredistributable"
6533 elif enabled gplv3; then
6534     license="GPL version 3 or later"
6535 elif enabled lgplv3; then
6536     license="LGPL version 3 or later"
6537 elif enabled gpl; then
6538     license="GPL version 2 or later"
6539 fi
6540
6541 if test "$quiet" != "yes"; then
6542
6543 echo "install prefix            $prefix"
6544 echo "source path               $source_path"
6545 echo "C compiler                $cc"
6546 echo "C library                 $libc_type"
6547 if test "$host_cc" != "$cc"; then
6548     echo "host C compiler           $host_cc"
6549     echo "host C library            $host_libc_type"
6550 fi
6551 echo "ARCH                      $arch ($cpu)"
6552 if test "$build_suffix" != ""; then
6553     echo "build suffix              $build_suffix"
6554 fi
6555 if test "$progs_suffix" != ""; then
6556     echo "progs suffix              $progs_suffix"
6557 fi
6558 if test "$extra_version" != ""; then
6559     echo "version string suffix     $extra_version"
6560 fi
6561 echo "big-endian                ${bigendian-no}"
6562 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6563 if enabled x86; then
6564     echo "${yasmexe}                      ${yasm-no}"
6565     echo "MMX enabled               ${mmx-no}"
6566     echo "MMXEXT enabled            ${mmxext-no}"
6567     echo "3DNow! enabled            ${amd3dnow-no}"
6568     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6569     echo "SSE enabled               ${sse-no}"
6570     echo "SSSE3 enabled             ${ssse3-no}"
6571     echo "AESNI enabled             ${aesni-no}"
6572     echo "AVX enabled               ${avx-no}"
6573     echo "XOP enabled               ${xop-no}"
6574     echo "FMA3 enabled              ${fma3-no}"
6575     echo "FMA4 enabled              ${fma4-no}"
6576     echo "i686 features enabled     ${i686-no}"
6577     echo "CMOV is fast              ${fast_cmov-no}"
6578     echo "EBX available             ${ebx_available-no}"
6579     echo "EBP available             ${ebp_available-no}"
6580 fi
6581 if enabled aarch64; then
6582     echo "NEON enabled              ${neon-no}"
6583     echo "VFP enabled               ${vfp-no}"
6584 fi
6585 if enabled arm; then
6586     echo "ARMv5TE enabled           ${armv5te-no}"
6587     echo "ARMv6 enabled             ${armv6-no}"
6588     echo "ARMv6T2 enabled           ${armv6t2-no}"
6589     echo "VFP enabled               ${vfp-no}"
6590     echo "NEON enabled              ${neon-no}"
6591     echo "THUMB enabled             ${thumb-no}"
6592 fi
6593 if enabled mips; then
6594     echo "MIPS FPU enabled          ${mipsfpu-no}"
6595     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6596     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6597     echo "MIPS MSA enabled          ${msa-no}"
6598     echo "LOONGSON MMI enabled      ${mmi-no}"
6599 fi
6600 if enabled ppc; then
6601     echo "AltiVec enabled           ${altivec-no}"
6602     echo "VSX enabled               ${vsx-no}"
6603     echo "POWER8 enabled            ${power8-no}"
6604     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6605     echo "dcbzl available           ${dcbzl-no}"
6606 fi
6607 echo "debug symbols             ${debug-no}"
6608 echo "strip symbols             ${stripping-no}"
6609 echo "optimize for size         ${small-no}"
6610 echo "optimizations             ${optimizations-no}"
6611 echo "static                    ${static-no}"
6612 echo "shared                    ${shared-no}"
6613 echo "postprocessing support    ${postproc-no}"
6614 echo "network support           ${network-no}"
6615 echo "threading support         ${thread_type-no}"
6616 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6617 echo "texi2html enabled         ${texi2html-no}"
6618 echo "perl enabled              ${perl-no}"
6619 echo "pod2man enabled           ${pod2man-no}"
6620 echo "makeinfo enabled          ${makeinfo-no}"
6621 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6622 test -n "$random_seed" &&
6623     echo "random seed               ${random_seed}"
6624 echo
6625
6626 echo "External libraries:"
6627 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6628 echo
6629
6630 echo "External libraries providing hardware acceleration:"
6631 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6632 echo
6633
6634 echo "Libraries:"
6635 print_enabled '' $LIBRARY_LIST | print_in_columns
6636 echo
6637
6638 echo "Programs:"
6639 print_enabled '' $PROGRAM_LIST | print_in_columns
6640 echo
6641
6642 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6643     echo "Enabled ${type}s:"
6644     eval list=\$$(toupper $type)_LIST
6645     print_enabled '_*' $list | print_in_columns
6646     echo
6647 done
6648
6649 if test -n "$ignore_tests"; then
6650     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6651     echo "Ignored FATE tests:"
6652     echo $ignore_tests | print_in_columns
6653     echo
6654 fi
6655
6656 echo "License: $license"
6657
6658 echo "Creating configuration files ..."
6659
6660 fi # test "$quiet" != "yes"
6661
6662 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6663
6664 enabled stripping || strip="echo skipping strip"
6665
6666 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6667
6668 cat > ffbuild/config.mak <<EOF
6669 # Automatically generated by configure - do not modify!
6670 ifndef FFMPEG_CONFIG_MAK
6671 FFMPEG_CONFIG_MAK=1
6672 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6673 prefix=$prefix
6674 LIBDIR=\$(DESTDIR)$libdir
6675 SHLIBDIR=\$(DESTDIR)$shlibdir
6676 INCDIR=\$(DESTDIR)$incdir
6677 BINDIR=\$(DESTDIR)$bindir
6678 DATADIR=\$(DESTDIR)$datadir
6679 DOCDIR=\$(DESTDIR)$docdir
6680 MANDIR=\$(DESTDIR)$mandir
6681 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6682 INSTALL_NAME_DIR=$install_name_dir
6683 SRC_PATH=$source_path
6684 SRC_LINK=$source_link
6685 ifndef MAIN_MAKEFILE
6686 SRC_PATH:=\$(SRC_PATH:.%=..%)
6687 endif
6688 CC_IDENT=$cc_ident
6689 ARCH=$arch
6690 INTRINSICS=$intrinsics
6691 CC=$cc
6692 CXX=$cxx
6693 AS=$as
6694 OBJCC=$objcc
6695 LD=$ld
6696 DEPCC=$dep_cc
6697 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6698 DEPAS=$as
6699 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6700 YASM=$yasmexe
6701 DEPYASM=$yasmexe
6702 AR=$ar
6703 ARFLAGS=$arflags
6704 AR_O=$ar_o
6705 RANLIB=$ranlib
6706 STRIP=$strip
6707 CP=cp -p
6708 LN_S=$ln_s
6709 CPPFLAGS=$CPPFLAGS
6710 CFLAGS=$CFLAGS
6711 CXXFLAGS=$CXXFLAGS
6712 OBJCFLAGS=$OBJCFLAGS
6713 ASFLAGS=$ASFLAGS
6714 AS_C=$AS_C
6715 AS_O=$AS_O
6716 OBJCC_C=$OBJCC_C
6717 OBJCC_E=$OBJCC_E
6718 OBJCC_O=$OBJCC_O
6719 CC_C=$CC_C
6720 CC_E=$CC_E
6721 CC_O=$CC_O
6722 CXX_C=$CXX_C
6723 CXX_O=$CXX_O
6724 LD_O=$LD_O
6725 LD_LIB=$LD_LIB
6726 LD_PATH=$LD_PATH
6727 DLLTOOL=$dlltool
6728 WINDRES=$windres
6729 DEPWINDRES=$dep_cc
6730 DOXYGEN=$doxygen
6731 LDFLAGS=$LDFLAGS
6732 LDEXEFLAGS=$LDEXEFLAGS
6733 LDLIBFLAGS=$LDLIBFLAGS
6734 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6735 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6736 YASMFLAGS=$YASMFLAGS
6737 BUILDSUF=$build_suffix
6738 PROGSSUF=$progs_suffix
6739 FULLNAME=$FULLNAME
6740 LIBPREF=$LIBPREF
6741 LIBSUF=$LIBSUF
6742 LIBNAME=$LIBNAME
6743 SLIBPREF=$SLIBPREF
6744 SLIBSUF=$SLIBSUF
6745 EXESUF=$EXESUF
6746 EXTRA_VERSION=$extra_version
6747 CCDEP=$CCDEP
6748 CXXDEP=$CXXDEP
6749 CCDEP_FLAGS=$CCDEP_FLAGS
6750 ASDEP=$ASDEP
6751 ASDEP_FLAGS=$ASDEP_FLAGS
6752 CC_DEPFLAGS=$CC_DEPFLAGS
6753 AS_DEPFLAGS=$AS_DEPFLAGS
6754 HOSTCC=$host_cc
6755 HOSTLD=$host_ld
6756 HOSTCFLAGS=$host_cflags
6757 HOSTCPPFLAGS=$host_cppflags
6758 HOSTEXESUF=$HOSTEXESUF
6759 HOSTLDFLAGS=$host_ldflags
6760 HOSTEXTRALIBS=$host_extralibs
6761 DEPHOSTCC=$host_cc
6762 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6763 HOSTCCDEP=$HOSTCCDEP
6764 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6765 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6766 HOSTCC_C=$HOSTCC_C
6767 HOSTCC_O=$HOSTCC_O
6768 HOSTLD_O=$HOSTLD_O
6769 TARGET_EXEC=$target_exec $target_exec_args
6770 TARGET_PATH=$target_path
6771 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6772 CFLAGS-ffplay=${sdl2_cflags}
6773 CFLAGS_HEADERS=$CFLAGS_HEADERS
6774 ZLIB=$($ldflags_filter -lz)
6775 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6776 EXTRALIBS=$extralibs
6777 COMPAT_OBJS=$compat_objs
6778 INSTALL=$install
6779 LIBTARGET=${LIBTARGET}
6780 SLIBNAME=${SLIBNAME}
6781 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6782 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6783 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6784 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6785 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6786 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6787 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6788 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6789 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6790 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6791 NOREDZONE_FLAGS=$noredzone_flags
6792 LIBFUZZER_PATH=$libfuzzer_path
6793 IGNORE_TESTS=$ignore_tests
6794 EOF
6795
6796 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
6797
6798 print_program_extralibs(){
6799     eval "program_extralibs=\$${1}_extralibs"
6800     eval echo "EXTRALIBS-${1}=${program_extralibs}" >> ffbuild/config.mak
6801 }
6802
6803 map 'print_program_extralibs $v' $PROGRAM_LIST
6804
6805 cat > $TMPH <<EOF
6806 /* Automatically generated by configure - do not modify! */
6807 #ifndef FFMPEG_CONFIG_H
6808 #define FFMPEG_CONFIG_H
6809 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6810 #define FFMPEG_LICENSE "$(c_escape $license)"
6811 #define CONFIG_THIS_YEAR 2017
6812 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6813 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6814 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6815 #define av_restrict $_restrict
6816 #define EXTERN_PREFIX "${extern_prefix}"
6817 #define EXTERN_ASM ${extern_prefix}
6818 #define BUILDSUF "$build_suffix"
6819 #define SLIBSUF "$SLIBSUF"
6820 #define HAVE_MMX2 HAVE_MMXEXT
6821 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6822 EOF
6823
6824 test -n "$assert_level" &&
6825     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6826
6827 test -n "$malloc_prefix" &&
6828     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6829
6830 if enabled yasm; then
6831     append config_files $TMPASM
6832     printf '' >$TMPASM
6833 fi
6834
6835 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6836
6837
6838 mkdir -p doc
6839 mkdir -p tests
6840 mkdir -p tests/api
6841 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6842
6843 print_config ARCH_   "$config_files" $ARCH_LIST
6844 print_config HAVE_   "$config_files" $HAVE_LIST
6845 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6846                                      $CONFIG_EXTRA      \
6847                                      $ALL_COMPONENTS    \
6848
6849 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6850 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
6851
6852 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6853 cp_if_changed $TMPH config.h
6854 touch ffbuild/.config
6855
6856 enabled yasm && cp_if_changed $TMPASM config.asm
6857
6858 cat > $TMPH <<EOF
6859 /* Generated by ffconf */
6860 #ifndef AVUTIL_AVCONFIG_H
6861 #define AVUTIL_AVCONFIG_H
6862 EOF
6863
6864 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6865
6866 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6867
6868 cp_if_changed $TMPH libavutil/avconfig.h
6869
6870 # generate the lists of enabled components
6871 print_enabled_components(){
6872     file=$1
6873     struct_name=$2
6874     name=$3
6875     shift 3
6876     echo "static const $struct_name *$name[] = {" > $TMPH
6877     for c in $*; do
6878         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6879     done
6880     echo "    NULL };" >> $TMPH
6881     cp_if_changed $TMPH $file
6882 }
6883
6884 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6885 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6886
6887 if test -n "$WARNINGS"; then
6888     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6889     enabled fatal_warnings && exit 1
6890 fi
6891
6892 # Settings for pkg-config files
6893
6894 cat > ffbuild/config.sh <<EOF
6895 # Automatically generated by configure - do not modify!
6896 shared=$shared
6897 build_suffix=$build_suffix
6898 prefix=$prefix
6899 libdir=$libdir
6900 incdir=$incdir
6901 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
6902 source_path=${source_path}
6903 LIBPREF=${LIBPREF}
6904 LIBSUF=${LIBSUF}
6905
6906 extralibs_avutil="$LIBRT $LIBM"
6907 extralibs_avcodec="$extralibs"
6908 extralibs_avformat="$extralibs"
6909 extralibs_avdevice="$extralibs"
6910 extralibs_avfilter="$extralibs"
6911 extralibs_avresample="$LIBM"
6912 extralibs_postproc=""
6913 extralibs_swscale="$LIBM"
6914 extralibs_swresample="$LIBM $LIBSOXR"
6915 EOF
6916
6917 for lib in $LIBRARY_LIST; do
6918     lib_deps="$(eval echo \$${lib}_deps)"
6919     echo ${lib}_deps=\"$lib_deps\" >> ffbuild/config.sh
6920 done