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   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 301   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 302   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 303   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 304   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 305   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 306   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 307   --enable-omx             enable OpenMAX IL code [no]
 308   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 309   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 310   --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
 311   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 312   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 313
 314 Toolchain options:
 315   --arch=ARCH              select architecture [$arch]
 316   --cpu=CPU                select the minimum required CPU (affects
 317                            instruction selection, may crash on older CPUs)
 318   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 319   --progs-suffix=SUFFIX    program name suffix []
 320   --enable-cross-compile   assume a cross-compiler is used
 321   --sysroot=PATH           root of cross-build tree
 322   --sysinclude=PATH        location of cross-build system headers
 323   --target-os=OS           compiler targets OS [$target_os]
 324   --target-exec=CMD        command to run executables on target
 325   --target-path=DIR        path to view of build directory on target
 326   --target-samples=DIR     path to samples directory on target
 327   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 328   --toolchain=NAME         set tool defaults according to NAME
 329   --nm=NM                  use nm tool NM [$nm_default]
 330   --ar=AR                  use archive tool AR [$ar_default]
 331   --as=AS                  use assembler AS [$as_default]
 332   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 333   --strip=STRIP            use strip tool STRIP [$strip_default]
 334   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 335   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 336   --cc=CC                  use C compiler CC [$cc_default]
 337   --cxx=CXX                use C compiler CXX [$cxx_default]
 338   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 339   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 340   --ld=LD                  use linker LD [$ld_default]
 341   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 342   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 343   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 344   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 345   --host-cc=HOSTCC         use host C compiler HOSTCC
 346   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 347   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 348   --host-ld=HOSTLD         use host linker HOSTLD
 349   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 350   --host-libs=HLIBS        use libs HLIBS when linking for host
 351   --host-os=OS             compiler host OS [$target_os]
 352   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 353   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 354   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 355   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 356   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 357   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 358   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 359   --extra-version=STRING   version string suffix []
 360   --optflags=OPTFLAGS      override optimization-related compiler flags
 361   --build-suffix=SUFFIX    library name suffix []
 362   --enable-pic             build position-independent code
 363   --enable-thumb           compile for Thumb instruction set
 364   --enable-lto             use link-time optimization
 365   --env="ENV=override"     override the environment variables
 366
 367 Advanced options (experts only):
 368   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 369   --custom-allocator=NAME  use a supported custom allocator
 370   --disable-symver         disable symbol versioning
 371   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 372   --disable-safe-bitstream-reader
 373                            disable buffer boundary checking in bitreaders
 374                            (faster, but may crash)
 375   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 376
 377 Optimization options (experts only):
 378   --disable-asm            disable all assembly optimizations
 379   --disable-altivec        disable AltiVec optimizations
 380   --disable-vsx            disable VSX optimizations
 381   --disable-power8         disable POWER8 optimizations
 382   --disable-amd3dnow       disable 3DNow! optimizations
 383   --disable-amd3dnowext    disable 3DNow! extended optimizations
 384   --disable-mmx            disable MMX optimizations
 385   --disable-mmxext         disable MMXEXT optimizations
 386   --disable-sse            disable SSE optimizations
 387   --disable-sse2           disable SSE2 optimizations
 388   --disable-sse3           disable SSE3 optimizations
 389   --disable-ssse3          disable SSSE3 optimizations
 390   --disable-sse4           disable SSE4 optimizations
 391   --disable-sse42          disable SSE4.2 optimizations
 392   --disable-avx            disable AVX optimizations
 393   --disable-xop            disable XOP optimizations
 394   --disable-fma3           disable FMA3 optimizations
 395   --disable-fma4           disable FMA4 optimizations
 396   --disable-avx2           disable AVX2 optimizations
 397   --disable-aesni          disable AESNI optimizations
 398   --disable-armv5te        disable armv5te optimizations
 399   --disable-armv6          disable armv6 optimizations
 400   --disable-armv6t2        disable armv6t2 optimizations
 401   --disable-vfp            disable VFP optimizations
 402   --disable-neon           disable NEON optimizations
 403   --disable-inline-asm     disable use of inline assembly
 404   --disable-yasm           disable use of nasm/yasm assembly
 405   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 406   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 407   --disable-msa            disable MSA optimizations
 408   --disable-mipsfpu        disable floating point MIPS optimizations
 409   --disable-mmi            disable Loongson SIMD optimizations
 410   --disable-fast-unaligned consider unaligned accesses slow
 411
 412 Developer options (useful when working on FFmpeg itself):
 413   --disable-debug          disable debugging symbols
 414   --enable-debug=LEVEL     set the debug level [$debuglevel]
 415   --disable-optimizations  disable compiler optimizations
 416   --enable-extra-warnings  enable more compiler warnings
 417   --disable-stripping      disable stripping of executables and shared libraries
 418   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 419                            2 causes a slowdown at runtime.
 420   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 421   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 422                            leaks and errors, using the specified valgrind binary.
 423                            Cannot be combined with --target-exec
 424   --enable-ftrapv          Trap arithmetic overflows
 425   --samples=PATH           location of test samples for FATE, if not set use
 426                            \$FATE_SAMPLES at make invocation time.
 427   --enable-neon-clobber-test check NEON registers for clobbering (should be
 428                            used only for debugging purposes)
 429   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 430                            should be used only for debugging purposes)
 431   --enable-random          randomly enable/disable components
 432   --disable-random
 433   --enable-random=LIST     randomly enable/disable specific components or
 434   --disable-random=LIST    component groups. LIST is a comma-separated list
 435                            of NAME[:PROB] entries where NAME is a component
 436                            (group) and PROB the probability associated with
 437                            NAME (default 0.5).
 438   --random-seed=VALUE      seed value for --enable/disable-random
 439   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 440                            (only applies to --disable-optimizations builds)
 441   --enable-osfuzz          Enable building fuzzer tool
 442   --libfuzzer=PATH         path to libfuzzer
 443   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 444                            in the name) of tests whose result is ignored
 445
 446 NOTE: Object files are built at the place where configure is launched.
 447 EOF
 448   exit 0
 449 }
 450
 451 quotes='""'
 452 if test -t 1 && which tput >/dev/null 2>&1; then
 453     ncolors=$(tput colors)
 454     if test -n "$ncolors" && test $ncolors -ge 8; then
 455         bold_color=$(tput bold)
 456         warn_color=$(tput setaf 3)
 457         error_color=$(tput setaf 1)
 458         reset_color=$(tput sgr0)
 459     fi
 460     # 72 used instead of 80 since that's the default of pr
 461     ncols=$(tput cols)
 462 fi
 463 : ${ncols:=72}
 464
 465 log(){
 466     echo "$@" >> $logfile
 467 }
 468
 469 log_file(){
 470     log BEGIN $1
 471     pr -n -t $1 >> $logfile
 472     log END $1
 473 }
 474
 475 warn(){
 476     log "WARNING: $*"
 477     WARNINGS="${WARNINGS}WARNING: $*\n"
 478 }
 479
 480 die(){
 481     log "$@"
 482     echo "$error_color$bold_color$@$reset_color"
 483     cat <<EOF
 484
 485 If you think configure made a mistake, make sure you are using the latest
 486 version from Git.  If the latest version fails, report the problem to the
 487 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 488 EOF
 489     if disabled logging; then
 490         cat <<EOF
 491 Rerun configure with logging enabled (do not use --disable-logging), and
 492 include the log this produces with your report.
 493 EOF
 494     else
 495         cat <<EOF
 496 Include the log file "$logfile" produced by configure as this will help
 497 solve the problem.
 498 EOF
 499     fi
 500     exit 1
 501 }
 502
 503 # Avoid locale weirdness, besides we really just want to translate ASCII.
 504 toupper(){
 505     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 506 }
 507
 508 tolower(){
 509     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 510 }
 511
 512 c_escape(){
 513     echo "$*" | sed 's/["\\]/\\\0/g'
 514 }
 515
 516 sh_quote(){
 517     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 518     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 519     echo "$v"
 520 }
 521
 522 cleanws(){
 523     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 524 }
 525
 526 filter(){
 527     pat=$1
 528     shift
 529     for v; do
 530         eval "case $v in $pat) printf '%s ' $v ;; esac"
 531     done
 532 }
 533
 534 filter_out(){
 535     pat=$1
 536     shift
 537     for v; do
 538         eval "case $v in $pat) ;; *) printf '%s ' $v ;; esac"
 539     done
 540 }
 541
 542 map(){
 543     m=$1
 544     shift
 545     for v; do eval $m; done
 546 }
 547
 548 add_suffix(){
 549     suffix=$1
 550     shift
 551     for v; do echo ${v}${suffix}; done
 552 }
 553
 554 set_all(){
 555     value=$1
 556     shift
 557     for var in $*; do
 558         eval $var=$value
 559     done
 560 }
 561
 562 set_weak(){
 563     value=$1
 564     shift
 565     for var; do
 566         eval : \${$var:=$value}
 567     done
 568 }
 569
 570 sanitize_var_name(){
 571     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 572 }
 573
 574 set_safe(){
 575     var=$1
 576     shift
 577     eval $(sanitize_var_name "$var")='$*'
 578 }
 579
 580 get_safe(){
 581     eval echo \$$(sanitize_var_name "$1")
 582 }
 583
 584 pushvar(){
 585     for pvar in $*; do
 586         eval level=\${${pvar}_level:=0}
 587         eval ${pvar}_${level}="\$$pvar"
 588         eval ${pvar}_level=$(($level+1))
 589     done
 590 }
 591
 592 popvar(){
 593     for pvar in $*; do
 594         eval level=\${${pvar}_level:-0}
 595         test $level = 0 && continue
 596         eval level=$(($level-1))
 597         eval $pvar="\${${pvar}_${level}}"
 598         eval ${pvar}_level=$level
 599         eval unset ${pvar}_${level}
 600     done
 601 }
 602
 603 request(){
 604     for var in $*; do
 605         eval ${var}_requested=yes
 606         eval $var=
 607     done
 608 }
 609
 610 enable(){
 611     set_all yes $*
 612 }
 613
 614 disable(){
 615     set_all no $*
 616 }
 617
 618 enable_weak(){
 619     set_weak yes $*
 620 }
 621
 622 disable_weak(){
 623     set_weak no $*
 624 }
 625
 626 enable_safe(){
 627     for var; do
 628         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 629     done
 630 }
 631
 632 disable_safe(){
 633     for var; do
 634         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 635     done
 636 }
 637
 638 do_enable_deep(){
 639     for var; do
 640         enabled $var && continue
 641         eval sel="\$${var}_select"
 642         eval sgs="\$${var}_suggest"
 643         pushvar var sgs
 644         enable_deep $sel
 645         popvar sgs
 646         enable_deep_weak $sgs
 647         popvar var
 648     done
 649 }
 650
 651 enable_deep(){
 652     do_enable_deep $*
 653     enable $*
 654 }
 655
 656 enable_deep_weak(){
 657     for var; do
 658         disabled $var && continue
 659         pushvar var
 660         do_enable_deep $var
 661         popvar var
 662         enable_weak $var
 663     done
 664 }
 665
 666 requested(){
 667     test "${1#!}" = "$1" && op='=' || op=!=
 668     eval test "x\$${1#!}_requested" $op "xyes"
 669 }
 670
 671 enabled(){
 672     test "${1#!}" = "$1" && op='=' || op=!=
 673     eval test "x\$${1#!}" $op "xyes"
 674 }
 675
 676 disabled(){
 677     test "${1#!}" = "$1" && op='=' || op=!=
 678     eval test "x\$${1#!}" $op "xno"
 679 }
 680
 681 enabled_all(){
 682     for opt; do
 683         enabled $opt || return 1
 684     done
 685 }
 686
 687 disabled_all(){
 688     for opt; do
 689         disabled $opt || return 1
 690     done
 691 }
 692
 693 enabled_any(){
 694     for opt; do
 695         enabled $opt && return 0
 696     done
 697 }
 698
 699 disabled_any(){
 700     for opt; do
 701         disabled $opt && return 0
 702     done
 703     return 1
 704 }
 705
 706 set_default(){
 707     for opt; do
 708         eval : \${$opt:=\$${opt}_default}
 709     done
 710 }
 711
 712 is_in(){
 713     value=$1
 714     shift
 715     for var in $*; do
 716         [ $var = $value ] && return 0
 717     done
 718     return 1
 719 }
 720
 721 do_check_deps(){
 722     for cfg; do
 723         cfg="${cfg#!}"
 724         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 725         disabled ${cfg}_checking && continue
 726         enable ${cfg}_checking
 727         append allopts $cfg
 728
 729         eval dep_all="\$${cfg}_deps"
 730         eval dep_any="\$${cfg}_deps_any"
 731         eval dep_sel="\$${cfg}_select"
 732         eval dep_sgs="\$${cfg}_suggest"
 733         eval dep_ifa="\$${cfg}_if"
 734         eval dep_ifn="\$${cfg}_if_any"
 735
 736         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 737         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 738         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 739
 740         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 741         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 742         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 743         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 744         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 745
 746         if enabled $cfg; then
 747             enable_deep $dep_sel
 748             enable_deep_weak $dep_sgs
 749         fi
 750
 751         disable ${cfg}_checking
 752     done
 753 }
 754
 755 check_deps(){
 756     unset allopts
 757
 758     do_check_deps "$@"
 759
 760     for cfg in $allopts; do
 761         enabled $cfg || continue
 762         eval dep_extralibs="\$${cfg}_extralibs"
 763         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 764     done
 765 }
 766
 767 print_config(){
 768     pfx=$1
 769     files=$2
 770     shift 2
 771     map 'eval echo "$v \${$v:-no}"' "$@" |
 772     awk "BEGIN { split(\"$files\", files) }
 773         {
 774             c = \"$pfx\" toupper(\$1);
 775             v = \$2;
 776             sub(/yes/, 1, v);
 777             sub(/no/,  0, v);
 778             for (f in files) {
 779                 file = files[f];
 780                 if (file ~ /\\.h\$/) {
 781                     printf(\"#define %s %d\\n\", c, v) >>file;
 782                 } else if (file ~ /\\.asm\$/) {
 783                     printf(\"%%define %s %d\\n\", c, v) >>file;
 784                 } else if (file ~ /\\.mak\$/) {
 785                     n = -v ? \"\" : \"!\";
 786                     printf(\"%s%s=yes\\n\", n, c) >>file;
 787                 } else if (file ~ /\\.texi\$/) {
 788                     pre = -v ? \"\" : \"@c \";
 789                     yesno = \$2;
 790                     c2 = tolower(c);
 791                     gsub(/_/, \"-\", c2);
 792                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 793                 }
 794             }
 795         }"
 796 }
 797
 798 print_enabled(){
 799     suf=$1
 800     shift
 801     for v; do
 802         enabled $v && printf "%s\n" ${v%$suf}
 803     done
 804 }
 805
 806 append(){
 807     var=$1
 808     shift
 809     eval "$var=\"\$$var $*\""
 810 }
 811
 812 prepend(){
 813     var=$1
 814     shift
 815     eval "$var=\"$* \$$var\""
 816 }
 817
 818 unique(){
 819     var=$1
 820     uniq_list=""
 821     for tok in $(eval echo \$$var); do
 822         uniq_list="$(filter_out $tok $uniq_list) $tok"
 823     done
 824     eval "$var=\"${uniq_list}\""
 825 }
 826
 827 add_cppflags(){
 828     append CPPFLAGS "$@"
 829 }
 830
 831 add_cflags(){
 832     append CFLAGS $($cflags_filter "$@")
 833 }
 834
 835 add_cflags_headers(){
 836     append CFLAGS_HEADERS $($cflags_filter "$@")
 837 }
 838
 839 add_cxxflags(){
 840     append CXXFLAGS $($cflags_filter "$@")
 841 }
 842
 843 add_asflags(){
 844     append ASFLAGS $($asflags_filter "$@")
 845 }
 846
 847 add_objcflags(){
 848     append OBJCFLAGS $($objcflags_filter "$@")
 849 }
 850
 851 add_ldflags(){
 852     append LDFLAGS $($ldflags_filter "$@")
 853 }
 854
 855 add_ldexeflags(){
 856     append LDEXEFLAGS $($ldflags_filter "$@")
 857 }
 858
 859 add_ldlibflags(){
 860     append LDLIBFLAGS $($ldflags_filter "$@")
 861 }
 862
 863 add_stripflags(){
 864     append ASMSTRIPFLAGS "$@"
 865 }
 866
 867 add_extralibs(){
 868     prepend extralibs $($ldflags_filter "$@")
 869 }
 870
 871 add_host_cppflags(){
 872     append host_cppflags "$@"
 873 }
 874
 875 add_host_cflags(){
 876     append host_cflags $($host_cflags_filter "$@")
 877 }
 878
 879 add_host_ldflags(){
 880     append host_ldflags $($host_ldflags_filter "$@")
 881 }
 882
 883 add_compat(){
 884     append compat_objs $1
 885     shift
 886     map 'add_cppflags -D$v' "$@"
 887 }
 888
 889 check_cmd(){
 890     log "$@"
 891     "$@" >> $logfile 2>&1
 892 }
 893
 894 check_stat(){
 895     log check_stat "$@"
 896     stat "$1" >> $logfile 2>&1
 897 }
 898
 899 cc_o(){
 900     eval printf '%s\\n' $CC_O
 901 }
 902
 903 cc_e(){
 904     eval printf '%s\\n' $CC_E
 905 }
 906
 907 check_cc(){
 908     log check_cc "$@"
 909     cat > $TMPC
 910     log_file $TMPC
 911     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 912 }
 913
 914 check_cxx(){
 915     log check_cxx "$@"
 916     cat > $TMPCPP
 917     log_file $TMPCPP
 918     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 919 }
 920
 921 check_objcc(){
 922     log check_objcc "$@"
 923     cat > $TMPM
 924     log_file $TMPM
 925     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 926 }
 927
 928 check_cpp(){
 929     log check_cpp "$@"
 930     cat > $TMPC
 931     log_file $TMPC
 932     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 933 }
 934
 935 as_o(){
 936     eval printf '%s\\n' $AS_O
 937 }
 938
 939 check_as(){
 940     log check_as "$@"
 941     cat > $TMPS
 942     log_file $TMPS
 943     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 944 }
 945
 946 check_inline_asm(){
 947     log check_inline_asm "$@"
 948     name="$1"
 949     code="$2"
 950     shift 2
 951     disable $name
 952     check_cc "$@" <<EOF && enable $name
 953 void foo(void){ __asm__ volatile($code); }
 954 EOF
 955 }
 956
 957 check_inline_asm_flags(){
 958     log check_inline_asm_flags "$@"
 959     name="$1"
 960     code="$2"
 961     flags=''
 962     shift 2
 963     while [ "$1" != "" ]; do
 964       append flags $1
 965       shift
 966     done;
 967     disable $name
 968     cat > $TMPC <<EOF
 969 void foo(void){ __asm__ volatile($code); }
 970 EOF
 971     log_file $TMPC
 972     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 973     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 974 }
 975
 976 check_insn(){
 977     log check_insn "$@"
 978     check_inline_asm ${1}_inline "\"$2\""
 979     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 980 }
 981
 982 check_yasm(){
 983     log check_yasm "$@"
 984     echo "$1" > $TMPS
 985     log_file $TMPS
 986     shift 1
 987     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 988 }
 989
 990 ld_o(){
 991     eval printf '%s\\n' $LD_O
 992 }
 993
 994 check_ld(){
 995     log check_ld "$@"
 996     type=$1
 997     shift 1
 998     flags=$(filter_out '-l*|*.so' $@)
 999     libs=$(filter '-l*|*.so' $@)
1000     check_$type $($cflags_filter $flags) || return
1001     flags=$($ldflags_filter $flags)
1002     libs=$($ldflags_filter $libs)
1003     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1004 }
1005
1006 print_include(){
1007     hdr=$1
1008     test "${hdr%.h}" = "${hdr}" &&
1009         echo "#include $hdr"    ||
1010         echo "#include <$hdr>"
1011 }
1012
1013 check_code(){
1014     log check_code "$@"
1015     check=$1
1016     headers=$2
1017     code=$3
1018     shift 3
1019     {
1020         for hdr in $headers; do
1021             print_include $hdr
1022         done
1023         echo "int main(void) { $code; return 0; }"
1024     } | check_$check "$@"
1025 }
1026
1027 check_cppflags(){
1028     log check_cppflags "$@"
1029     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1030 int x;
1031 EOF
1032 }
1033
1034 test_cflags(){
1035     log test_cflags "$@"
1036     set -- $($cflags_filter "$@")
1037     check_cc "$@" <<EOF
1038 int x;
1039 EOF
1040 }
1041
1042 check_cflags(){
1043     log check_cflags "$@"
1044     test_cflags "$@" && add_cflags "$@"
1045 }
1046
1047 check_cxxflags(){
1048     log check_cxxflags "$@"
1049     set -- $($cflags_filter "$@")
1050     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1051 int x;
1052 EOF
1053 }
1054
1055 test_objcflags(){
1056     log test_objcflags "$@"
1057     set -- $($objcflags_filter "$@")
1058     check_objcc "$@" <<EOF
1059 int x;
1060 EOF
1061 }
1062
1063 check_objcflags(){
1064     log check_objcflags "$@"
1065     test_objcflags "$@" && add_objcflags "$@"
1066 }
1067
1068 test_ldflags(){
1069     log test_ldflags "$@"
1070     check_ld "cc" "$@" <<EOF
1071 int main(void){ return 0; }
1072 EOF
1073 }
1074
1075 check_ldflags(){
1076     log check_ldflags "$@"
1077     test_ldflags "$@" && add_ldflags "$@"
1078 }
1079
1080 test_stripflags(){
1081     log test_stripflags "$@"
1082     # call check_cc to get a fresh TMPO
1083     check_cc <<EOF
1084 int main(void) { return 0; }
1085 EOF
1086     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1087 }
1088
1089 check_stripflags(){
1090     log check_stripflags "$@"
1091     test_stripflags "$@" && add_stripflags "$@"
1092 }
1093
1094 check_header(){
1095     log check_header "$@"
1096     header=$1
1097     shift
1098     disable_safe $header
1099     check_cpp "$@" <<EOF && enable_safe $header
1100 #include <$header>
1101 int x;
1102 EOF
1103 }
1104
1105 check_header_objcc(){
1106     log check_header_objcc "$@"
1107     rm -f -- "$TMPO"
1108     header=$1
1109     shift
1110     disable_safe $header
1111     {
1112        echo "#include <$header>"
1113        echo "int main(void) { return 0; }"
1114     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1115 }
1116
1117 check_func(){
1118     log check_func "$@"
1119     func=$1
1120     shift
1121     disable $func
1122     check_ld "cc" "$@" <<EOF && enable $func
1123 extern int $func();
1124 int main(void){ $func(); }
1125 EOF
1126 }
1127
1128 check_complexfunc(){
1129     log check_complexfunc "$@"
1130     func=$1
1131     narg=$2
1132     shift 2
1133     test $narg = 2 && args="f, g" || args="f * I"
1134     disable $func
1135     check_ld "cc" "$@" <<EOF && enable $func
1136 #include <complex.h>
1137 #include <math.h>
1138 float foo(complex float f, complex float g) { return $func($args); }
1139 int main(void){ return (int) foo; }
1140 EOF
1141 }
1142
1143 check_mathfunc(){
1144     log check_mathfunc "$@"
1145     func=$1
1146     narg=$2
1147     shift 2
1148     test $narg = 2 && args="f, g" || args="f"
1149     disable $func
1150     check_ld "cc" "$@" <<EOF && enable $func
1151 #include <math.h>
1152 float foo(float f, float g) { return $func($args); }
1153 int main(void){ return (int) foo; }
1154 EOF
1155 }
1156
1157 check_func_headers(){
1158     log check_func_headers "$@"
1159     headers=$1
1160     funcs=$2
1161     shift 2
1162     {
1163         for hdr in $headers; do
1164             print_include $hdr
1165         done
1166         echo "#include <stdint.h>"
1167         for func in $funcs; do
1168             echo "long check_$func(void) { return (long) $func; }"
1169         done
1170         echo "int main(void) { int ret = 0;"
1171         # LTO could optimize out the test functions without this
1172         for func in $funcs; do
1173             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1174         done
1175         echo "return ret; }"
1176     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1177 }
1178
1179 check_class_headers_cpp(){
1180     log check_class_headers_cpp "$@"
1181     headers=$1
1182     classes=$2
1183     shift 2
1184     {
1185         for hdr in $headers; do
1186             echo "#include <$hdr>"
1187         done
1188         echo "int main(void) { "
1189         i=1
1190         for class in $classes; do
1191             echo "$class obj$i;"
1192             i=$(expr $i + 1)
1193         done
1194         echo "return 0; }"
1195     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1196 }
1197
1198 check_cpp_condition(){
1199     log check_cpp_condition "$@"
1200     header=$1
1201     condition=$2
1202     shift 2
1203     check_cpp "$@" <<EOF
1204 #include <$header>
1205 #if !($condition)
1206 #error "unsatisfied condition: $condition"
1207 #endif
1208 EOF
1209 }
1210
1211 test_cflags_cc(){
1212     log test_cflags_cc "$@"
1213     flags=$1
1214     header=$2
1215     condition=$3
1216     shift 3
1217     set -- $($cflags_filter "$flags")
1218     check_cc "$@" <<EOF
1219 #include <$header>
1220 #if !($condition)
1221 #error "unsatisfied condition: $condition"
1222 #endif
1223 EOF
1224 }
1225
1226 check_lib(){
1227     log check_lib "$@"
1228     name="$1"
1229     headers="$2"
1230     funcs="$3"
1231     shift 3
1232     disable $name
1233     check_func_headers "$headers" "$funcs" "$@" &&
1234         enable $name && add_extralibs "$@"
1235 }
1236
1237 check_lib_cpp(){
1238     log check_lib_cpp "$@"
1239     headers="$1"
1240     classes="$2"
1241     shift 2
1242     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1243 }
1244
1245 check_pkg_config(){
1246     log check_pkg_config "$@"
1247     pkg_version="$1"
1248     pkg="${1%% *}"
1249     headers="$2"
1250     funcs="$3"
1251     shift 3
1252     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1253     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1254     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1255     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1256         set_safe "${pkg}_cflags"    $pkg_cflags &&
1257         set_safe "${pkg}_extralibs" $pkg_libs
1258 }
1259
1260 check_exec(){
1261     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1262 }
1263
1264 check_exec_crash(){
1265     log check_exec_crash "$@"
1266     code=$(cat)
1267
1268     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1269     # are safe but may not be available everywhere.  Thus we use
1270     # raise(SIGTERM) instead.  The check is run in a subshell so we
1271     # can redirect the "Terminated" message from the shell.  SIGBUS
1272     # is not defined by standard C so it is used conditionally.
1273
1274     (check_exec "$@") >> $logfile 2>&1 <<EOF
1275 #include <signal.h>
1276 static void sighandler(int sig){
1277     raise(SIGTERM);
1278 }
1279 int foo(void){
1280     $code
1281 }
1282 int (*func_ptr)(void) = foo;
1283 int main(void){
1284     signal(SIGILL, sighandler);
1285     signal(SIGFPE, sighandler);
1286     signal(SIGSEGV, sighandler);
1287 #ifdef SIGBUS
1288     signal(SIGBUS, sighandler);
1289 #endif
1290     return func_ptr();
1291 }
1292 EOF
1293 }
1294
1295 check_type(){
1296     log check_type "$@"
1297     headers=$1
1298     type=$2
1299     shift 2
1300     disable_safe "$type"
1301     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1302 }
1303
1304 check_struct(){
1305     log check_struct "$@"
1306     headers=$1
1307     struct=$2
1308     member=$3
1309     shift 3
1310     disable_safe "${struct}_${member}"
1311     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1312         enable_safe "${struct}_${member}"
1313 }
1314
1315 check_builtin(){
1316     log check_builtin "$@"
1317     name=$1
1318     headers=$2
1319     builtin=$3
1320     shift 3
1321     disable "$name"
1322     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1323 }
1324
1325 check_compile_assert(){
1326     log check_compile_assert "$@"
1327     name=$1
1328     headers=$2
1329     condition=$3
1330     shift 3
1331     disable "$name"
1332     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1333 }
1334
1335 require(){
1336     log require "$@"
1337     name_version="$1"
1338     name="${1%% *}"
1339     headers="$2"
1340     func="$3"
1341     shift 3
1342     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1343 }
1344
1345 require_cpp(){
1346     name="$1"
1347     headers="$2"
1348     classes="$3"
1349     shift 3
1350     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1351 }
1352
1353 use_pkg_config(){
1354     log use_pkg_config "$@"
1355     pkg="$1"
1356     check_pkg_config "$@" || return 1
1357     add_cflags    $(get_safe "${pkg}_cflags")
1358     add_extralibs $(get_safe "${pkg}_extralibs")
1359 }
1360
1361 require_pkg_config(){
1362     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1363 }
1364
1365 hostcc_e(){
1366     eval printf '%s\\n' $HOSTCC_E
1367 }
1368
1369 hostcc_o(){
1370     eval printf '%s\\n' $HOSTCC_O
1371 }
1372
1373 check_host_cc(){
1374     log check_host_cc "$@"
1375     cat > $TMPC
1376     log_file $TMPC
1377     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1378 }
1379
1380 check_host_cpp(){
1381     log check_host_cpp "$@"
1382     cat > $TMPC
1383     log_file $TMPC
1384     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1385 }
1386
1387 check_host_cppflags(){
1388     log check_host_cppflags "$@"
1389     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1390 int x;
1391 EOF
1392 }
1393
1394 check_host_cflags(){
1395     log check_host_cflags "$@"
1396     set -- $($host_cflags_filter "$@")
1397     check_host_cc "$@" <<EOF && append host_cflags "$@"
1398 int x;
1399 EOF
1400 }
1401
1402 check_host_cpp_condition(){
1403     log check_host_cpp_condition "$@"
1404     header=$1
1405     condition=$2
1406     shift 2
1407     check_host_cpp "$@" <<EOF
1408 #include <$header>
1409 #if !($condition)
1410 #error "unsatisfied condition: $condition"
1411 #endif
1412 EOF
1413 }
1414
1415 cp_if_changed(){
1416     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1417     mkdir -p "$(dirname $2)"
1418     cp -f "$1" "$2"
1419 }
1420
1421 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1422 # system-dependent things.
1423
1424 AVCODEC_COMPONENTS="
1425     bsfs
1426     decoders
1427     encoders
1428     hwaccels
1429     parsers
1430 "
1431
1432 AVDEVICE_COMPONENTS="
1433     indevs
1434     outdevs
1435 "
1436 AVFILTER_COMPONENTS="
1437     filters
1438 "
1439 AVFORMAT_COMPONENTS="
1440     demuxers
1441     muxers
1442     protocols
1443 "
1444
1445 AVRESAMPLE_COMPONENTS=""
1446 AVUTIL_COMPONENTS=""
1447
1448 COMPONENT_LIST="
1449     $AVCODEC_COMPONENTS
1450     $AVDEVICE_COMPONENTS
1451     $AVFILTER_COMPONENTS
1452     $AVFORMAT_COMPONENTS
1453     $AVRESAMPLE_COMPONENTS
1454     $AVUTIL_COMPONENTS
1455 "
1456
1457 EXAMPLE_LIST="
1458     avio_dir_cmd_example
1459     avio_reading_example
1460     decode_audio_example
1461     decode_video_example
1462     demuxing_decoding_example
1463     encode_audio_example
1464     encode_video_example
1465     extract_mvs_example
1466     filter_audio_example
1467     filtering_audio_example
1468     filtering_video_example
1469     http_multiclient_example
1470     metadata_example
1471     muxing_example
1472     qsvdec_example
1473     remuxing_example
1474     resampling_audio_example
1475     scaling_video_example
1476     transcode_aac_example
1477     transcoding_example
1478 "
1479 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1480     bzlib
1481     iconv
1482     libxcb
1483     libxcb_shm
1484     libxcb_shape
1485     libxcb_xfixes
1486     lzma
1487     schannel
1488     sdl
1489     sdl2
1490     securetransport
1491     xlib
1492     zlib
1493 "
1494
1495 EXTERNAL_LIBRARY_GPL_LIST="
1496     avisynth
1497     frei0r
1498     libcdio
1499     librubberband
1500     libvidstab
1501     libx264
1502     libx265
1503     libxavs
1504     libxvid
1505 "
1506
1507 EXTERNAL_LIBRARY_NONFREE_LIST="
1508     decklink
1509     libfdk_aac
1510     openssl
1511 "
1512
1513 EXTERNAL_LIBRARY_VERSION3_LIST="
1514     gmp
1515     libopencore_amrnb
1516     libopencore_amrwb
1517     libvo_amrwbenc
1518 "
1519
1520 EXTERNAL_LIBRARY_GPLV3_LIST="
1521     libsmbclient
1522 "
1523
1524 EXTERNAL_LIBRARY_LIST="
1525     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1526     $EXTERNAL_LIBRARY_GPL_LIST
1527     $EXTERNAL_LIBRARY_NONFREE_LIST
1528     $EXTERNAL_LIBRARY_VERSION3_LIST
1529     $EXTERNAL_LIBRARY_GPLV3_LIST
1530     chromaprint
1531     crystalhd
1532     gcrypt
1533     gnutls
1534     jni
1535     ladspa
1536     libass
1537     libbluray
1538     libbs2b
1539     libcaca
1540     libcelt
1541     libdc1394
1542     libflite
1543     libfontconfig
1544     libfreetype
1545     libfribidi
1546     libgme
1547     libgsm
1548     libiec61883
1549     libilbc
1550     libkvazaar
1551     libmodplug
1552     libmp3lame
1553     libnut
1554     libopencv
1555     libopenh264
1556     libopenjpeg
1557     libopenmpt
1558     libopus
1559     libpulse
1560     librtmp
1561     libschroedinger
1562     libshine
1563     libsmbclient
1564     libsnappy
1565     libsoxr
1566     libspeex
1567     libssh
1568     libtesseract
1569     libtheora
1570     libtwolame
1571     libv4l2
1572     libvorbis
1573     libvpx
1574     libwavpack
1575     libwebp
1576     libzimg
1577     libzmq
1578     libzvbi
1579     mediacodec
1580     netcdf
1581     openal
1582     opencl
1583     opengl
1584     videotoolbox
1585 "
1586 HWACCEL_AUTODETECT_LIBRARY_LIST="
1587     audiotoolbox
1588     cuda
1589     cuvid
1590     d3d11va
1591     dxva2
1592     nvenc
1593     vaapi
1594     vda
1595     vdpau
1596     videotoolbox_hwaccel
1597     xvmc
1598 "
1599
1600 HWACCEL_LIBRARY_NONFREE_LIST="
1601     libnpp
1602 "
1603
1604 HWACCEL_LIBRARY_LIST="
1605     $HWACCEL_AUTODETECT_LIBRARY_LIST
1606     $HWACCEL_LIBRARY_NONFREE_LIST
1607     libmfx
1608     mmal
1609     omx
1610 "
1611
1612 DOCUMENT_LIST="
1613     doc
1614     htmlpages
1615     manpages
1616     podpages
1617     txtpages
1618 "
1619
1620 FEATURE_LIST="
1621     ftrapv
1622     gray
1623     hardcoded_tables
1624     omx_rpi
1625     runtime_cpudetect
1626     safe_bitstream_reader
1627     shared
1628     small
1629     static
1630     swscale_alpha
1631 "
1632
1633 LIBRARY_LIST="
1634     avcodec
1635     avdevice
1636     avfilter
1637     avformat
1638     avresample
1639     avutil
1640     postproc
1641     swresample
1642     swscale
1643 "
1644
1645 LICENSE_LIST="
1646     gpl
1647     nonfree
1648     version3
1649 "
1650
1651 PROGRAM_LIST="
1652     ffplay
1653     ffprobe
1654     ffserver
1655     ffmpeg
1656 "
1657
1658 SUBSYSTEM_LIST="
1659     dct
1660     dwt
1661     error_resilience
1662     faan
1663     fast_unaligned
1664     fft
1665     lsp
1666     lzo
1667     mdct
1668     pixelutils
1669     network
1670     rdft
1671 "
1672
1673 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1674 CONFIG_LIST="
1675     $DOCUMENT_LIST
1676     $EXAMPLE_LIST
1677     $EXTERNAL_LIBRARY_LIST
1678     $HWACCEL_LIBRARY_LIST
1679     $FEATURE_LIST
1680     $LICENSE_LIST
1681     $LIBRARY_LIST
1682     $PROGRAM_LIST
1683     $SUBSYSTEM_LIST
1684     fontconfig
1685     memory_poisoning
1686     neon_clobber_test
1687     ossfuzz
1688     pic
1689     raise_major
1690     thumb
1691     valgrind_backtrace
1692     xmm_clobber_test
1693     $COMPONENT_LIST
1694 "
1695
1696 THREADS_LIST="
1697     pthreads
1698     os2threads
1699     w32threads
1700 "
1701
1702 ATOMICS_LIST="
1703     atomics_gcc
1704     atomics_suncc
1705     atomics_win32
1706 "
1707
1708 AUTODETECT_LIBS="
1709     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1710     $HWACCEL_AUTODETECT_LIBRARY_LIST
1711     $THREADS_LIST
1712 "
1713
1714 ARCH_LIST="
1715     aarch64
1716     alpha
1717     arm
1718     avr32
1719     avr32_ap
1720     avr32_uc
1721     bfin
1722     ia64
1723     m68k
1724     mips
1725     mips64
1726     parisc
1727     ppc
1728     ppc64
1729     s390
1730     sh4
1731     sparc
1732     sparc64
1733     tilegx
1734     tilepro
1735     tomi
1736     x86
1737     x86_32
1738     x86_64
1739 "
1740
1741 ARCH_EXT_LIST_ARM="
1742     armv5te
1743     armv6
1744     armv6t2
1745     armv8
1746     neon
1747     vfp
1748     vfpv3
1749     setend
1750 "
1751
1752 ARCH_EXT_LIST_MIPS="
1753     mipsfpu
1754     mips32r2
1755     mips32r5
1756     mips64r2
1757     mips32r6
1758     mips64r6
1759     mipsdsp
1760     mipsdspr2
1761     msa
1762 "
1763
1764 ARCH_EXT_LIST_LOONGSON="
1765     loongson2
1766     loongson3
1767     mmi
1768 "
1769
1770 ARCH_EXT_LIST_X86_SIMD="
1771     aesni
1772     amd3dnow
1773     amd3dnowext
1774     avx
1775     avx2
1776     fma3
1777     fma4
1778     mmx
1779     mmxext
1780     sse
1781     sse2
1782     sse3
1783     sse4
1784     sse42
1785     ssse3
1786     xop
1787 "
1788
1789 ARCH_EXT_LIST_PPC="
1790     altivec
1791     dcbzl
1792     ldbrx
1793     power8
1794     ppc4xx
1795     vsx
1796 "
1797
1798 ARCH_EXT_LIST_X86="
1799     $ARCH_EXT_LIST_X86_SIMD
1800     cpunop
1801     i686
1802 "
1803
1804 ARCH_EXT_LIST="
1805     $ARCH_EXT_LIST_ARM
1806     $ARCH_EXT_LIST_PPC
1807     $ARCH_EXT_LIST_X86
1808     $ARCH_EXT_LIST_MIPS
1809     $ARCH_EXT_LIST_LOONGSON
1810 "
1811
1812 ARCH_FEATURES="
1813     aligned_stack
1814     fast_64bit
1815     fast_clz
1816     fast_cmov
1817     local_aligned_8
1818     local_aligned_16
1819     local_aligned_32
1820     simd_align_16
1821     simd_align_32
1822 "
1823
1824 BUILTIN_LIST="
1825     atomic_cas_ptr
1826     machine_rw_barrier
1827     MemoryBarrier
1828     mm_empty
1829     rdtsc
1830     sarestart
1831     sem_timedwait
1832     sync_val_compare_and_swap
1833 "
1834 HAVE_LIST_CMDLINE="
1835     inline_asm
1836     symver
1837     yasm
1838 "
1839
1840 HAVE_LIST_PUB="
1841     bigendian
1842     fast_unaligned
1843 "
1844
1845 HEADERS_LIST="
1846     alsa_asoundlib_h
1847     altivec_h
1848     arpa_inet_h
1849     asm_types_h
1850     cdio_paranoia_h
1851     cdio_paranoia_paranoia_h
1852     cuda_h
1853     d3d11_h
1854     dispatch_dispatch_h
1855     dev_bktr_ioctl_bt848_h
1856     dev_bktr_ioctl_meteor_h
1857     dev_ic_bt8xx_h
1858     dev_video_bktr_ioctl_bt848_h
1859     dev_video_meteor_ioctl_meteor_h
1860     direct_h
1861     dirent_h
1862     dlfcn_h
1863     dxva_h
1864     ES2_gl_h
1865     gsm_h
1866     io_h
1867     mach_mach_time_h
1868     machine_ioctl_bt848_h
1869     machine_ioctl_meteor_h
1870     malloc_h
1871     opencv2_core_core_c_h
1872     openjpeg_2_1_openjpeg_h
1873     openjpeg_2_0_openjpeg_h
1874     openjpeg_1_5_openjpeg_h
1875     OpenGL_gl3_h
1876     poll_h
1877     sndio_h
1878     soundcard_h
1879     stdatomic_h
1880     sys_mman_h
1881     sys_param_h
1882     sys_resource_h
1883     sys_select_h
1884     sys_soundcard_h
1885     sys_time_h
1886     sys_un_h
1887     sys_videoio_h
1888     termios_h
1889     udplite_h
1890     unistd_h
1891     valgrind_valgrind_h
1892     windows_h
1893     winsock2_h
1894 "
1895
1896 INTRINSICS_LIST="
1897     intrinsics_neon
1898 "
1899
1900 COMPLEX_FUNCS="
1901     cabs
1902     cexp
1903 "
1904
1905 MATH_FUNCS="
1906     atanf
1907     atan2f
1908     cbrt
1909     cbrtf
1910     copysign
1911     cosf
1912     erf
1913     exp2
1914     exp2f
1915     expf
1916     hypot
1917     isfinite
1918     isinf
1919     isnan
1920     ldexpf
1921     llrint
1922     llrintf
1923     log2
1924     log2f
1925     log10f
1926     lrint
1927     lrintf
1928     powf
1929     rint
1930     round
1931     roundf
1932     sinf
1933     trunc
1934     truncf
1935 "
1936
1937 SYSTEM_FUNCS="
1938     access
1939     aligned_malloc
1940     arc4random
1941     clock_gettime
1942     closesocket
1943     CommandLineToArgvW
1944     CoTaskMemFree
1945     CryptGenRandom
1946     dlopen
1947     fcntl
1948     flt_lim
1949     fork
1950     getaddrinfo
1951     gethrtime
1952     getopt
1953     GetProcessAffinityMask
1954     GetProcessMemoryInfo
1955     GetProcessTimes
1956     getrusage
1957     GetSystemTimeAsFileTime
1958     gettimeofday
1959     glob
1960     glXGetProcAddress
1961     gmtime_r
1962     inet_aton
1963     isatty
1964     jack_port_get_latency_range
1965     kbhit
1966     LoadLibrary
1967     localtime_r
1968     lstat
1969     lzo1x_999_compress
1970     mach_absolute_time
1971     MapViewOfFile
1972     memalign
1973     mkstemp
1974     mmap
1975     mprotect
1976     nanosleep
1977     PeekNamedPipe
1978     posix_memalign
1979     pthread_cancel
1980     sched_getaffinity
1981     SetConsoleTextAttribute
1982     SetConsoleCtrlHandler
1983     setmode
1984     setrlimit
1985     Sleep
1986     strerror_r
1987     sysconf
1988     sysctl
1989     usleep
1990     UTGetOSTypeFromString
1991     VirtualAlloc
1992     wglGetProcAddress
1993 "
1994
1995 TOOLCHAIN_FEATURES="
1996     as_dn_directive
1997     as_fpu_directive
1998     as_func
1999     as_object_arch
2000     asm_mod_q
2001     attribute_may_alias
2002     attribute_packed
2003     ebp_available
2004     ebx_available
2005     gnu_as
2006     gnu_windres
2007     ibm_asm
2008     inline_asm_direct_symbol_refs
2009     inline_asm_labels
2010     inline_asm_nonlocal_labels
2011     pragma_deprecated
2012     rsync_contimeout
2013     symver_asm_label
2014     symver_gnu_asm
2015     vfp_args
2016     xform_asm
2017     xmm_clobbers
2018 "
2019
2020 TYPES_LIST="
2021     CONDITION_VARIABLE_Ptr
2022     socklen_t
2023     struct_addrinfo
2024     struct_group_source_req
2025     struct_ip_mreq_source
2026     struct_ipv6_mreq
2027     struct_msghdr_msg_flags
2028     struct_pollfd
2029     struct_rusage_ru_maxrss
2030     struct_sctp_event_subscribe
2031     struct_sockaddr_in6
2032     struct_sockaddr_sa_len
2033     struct_sockaddr_storage
2034     struct_stat_st_mtim_tv_nsec
2035     struct_v4l2_frmivalenum_discrete
2036 "
2037
2038 HAVE_LIST="
2039     $ARCH_EXT_LIST
2040     $(add_suffix _external $ARCH_EXT_LIST)
2041     $(add_suffix _inline   $ARCH_EXT_LIST)
2042     $ARCH_FEATURES
2043     $ATOMICS_LIST
2044     $BUILTIN_LIST
2045     $COMPLEX_FUNCS
2046     $HAVE_LIST_CMDLINE
2047     $HAVE_LIST_PUB
2048     $HEADERS_LIST
2049     $INTRINSICS_LIST
2050     $MATH_FUNCS
2051     $SYSTEM_FUNCS
2052     $THREADS_LIST
2053     $TOOLCHAIN_FEATURES
2054     $TYPES_LIST
2055     alsa
2056     atomics_native
2057     dos_paths
2058     dxva2_lib
2059     dxva2api_cobj
2060     jack
2061     libc_msvcrt
2062     makeinfo
2063     makeinfo_html
2064     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2065     perl
2066     pod2man
2067     sdl2
2068     section_data_rel_ro
2069     sndio
2070     texi2html
2071     threads
2072     vaapi_drm
2073     vaapi_x11
2074     vdpau_x11
2075     winrt
2076 "
2077
2078 # options emitted with CONFIG_ prefix but not available on the command line
2079 CONFIG_EXTRA="
2080     aandcttables
2081     ac3dsp
2082     audio_frame_queue
2083     audiodsp
2084     blockdsp
2085     bswapdsp
2086     cabac
2087     dirac_parse
2088     dvprofile
2089     exif
2090     faandct
2091     faanidct
2092     fdctdsp
2093     flacdsp
2094     fmtconvert
2095     frame_thread_encoder
2096     g722dsp
2097     golomb
2098     gplv3
2099     h263dsp
2100     h264chroma
2101     h264dsp
2102     h264parse
2103     h264pred
2104     h264qpel
2105     hevcparse
2106     hpeldsp
2107     huffman
2108     huffyuvdsp
2109     huffyuvencdsp
2110     idctdsp
2111     iirfilter
2112     mdct15
2113     intrax8
2114     iso_media
2115     ividsp
2116     jpegtables
2117     lgplv3
2118     libx262
2119     llauddsp
2120     llviddsp
2121     llvidencdsp
2122     lpc
2123     lzf
2124     me_cmp
2125     mpeg_er
2126     mpegaudio
2127     mpegaudiodsp
2128     mpegaudioheader
2129     mpegvideo
2130     mpegvideoenc
2131     mss34dsp
2132     pixblockdsp
2133     qpeldsp
2134     qsv
2135     qsvdec
2136     qsvenc
2137     rangecoder
2138     riffdec
2139     riffenc
2140     rtpdec
2141     rtpenc_chain
2142     rv34dsp
2143     sinewin
2144     snappy
2145     srtp
2146     startcode
2147     texturedsp
2148     texturedspenc
2149     tpeldsp
2150     vaapi_encode
2151     vc1dsp
2152     videodsp
2153     vp3dsp
2154     vp56dsp
2155     vp8dsp
2156     vt_bt2020
2157     wma_freqs
2158     wmv2dsp
2159 "
2160
2161 CMDLINE_SELECT="
2162     $ARCH_EXT_LIST
2163     $CONFIG_LIST
2164     $HAVE_LIST_CMDLINE
2165     $THREADS_LIST
2166     asm
2167     cross_compile
2168     debug
2169     extra_warnings
2170     logging
2171     lto
2172     optimizations
2173     rpath
2174     stripping
2175 "
2176
2177 PATHS_LIST="
2178     bindir
2179     datadir
2180     docdir
2181     incdir
2182     libdir
2183     mandir
2184     pkgconfigdir
2185     prefix
2186     shlibdir
2187     install_name_dir
2188 "
2189
2190 CMDLINE_SET="
2191     $PATHS_LIST
2192     ar
2193     arch
2194     as
2195     assert_level
2196     build_suffix
2197     cc
2198     objcc
2199     cpu
2200     cross_prefix
2201     custom_allocator
2202     cxx
2203     dep_cc
2204     doxygen
2205     env
2206     extra_version
2207     gas
2208     host_cc
2209     host_cflags
2210     host_extralibs
2211     host_ld
2212     host_ldflags
2213     host_os
2214     ignore_tests
2215     install
2216     ld
2217     ln_s
2218     logfile
2219     malloc_prefix
2220     nm
2221     optflags
2222     pkg_config
2223     pkg_config_flags
2224     progs_suffix
2225     random_seed
2226     ranlib
2227     samples
2228     strip
2229     sws_max_filter_size
2230     sysinclude
2231     sysroot
2232     target_exec
2233     target_os
2234     target_path
2235     target_samples
2236     tempprefix
2237     toolchain
2238     valgrind
2239     yasmexe
2240 "
2241
2242 CMDLINE_APPEND="
2243     extra_cflags
2244     extra_cxxflags
2245     extra_objcflags
2246     host_cppflags
2247 "
2248
2249 # code dependency declarations
2250
2251 # architecture extensions
2252
2253 armv5te_deps="arm"
2254 armv6_deps="arm"
2255 armv6t2_deps="arm"
2256 armv8_deps="aarch64"
2257 neon_deps_any="aarch64 arm"
2258 intrinsics_neon_deps="neon"
2259 vfp_deps_any="aarch64 arm"
2260 vfpv3_deps="vfp"
2261 setend_deps="arm"
2262
2263 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2264
2265 loongson2_deps="mips"
2266 loongson3_deps="mips"
2267 mipsfpu_deps="mips"
2268 mipsdsp_deps="mips"
2269 mipsdspr2_deps="mips"
2270 mips32r2_deps="mips"
2271 mips32r5_deps="mips"
2272 mips32r6_deps="mips"
2273 mips64r2_deps="mips"
2274 mips64r6_deps="mips"
2275 msa_deps="mipsfpu"
2276 mmi_deps="mips"
2277
2278 altivec_deps="ppc"
2279 dcbzl_deps="ppc"
2280 ldbrx_deps="ppc"
2281 ppc4xx_deps="ppc"
2282 vsx_deps="altivec"
2283 power8_deps="vsx"
2284
2285 cpunop_deps="i686"
2286 x86_64_select="i686"
2287 x86_64_suggest="fast_cmov"
2288
2289 amd3dnow_deps="mmx"
2290 amd3dnowext_deps="amd3dnow"
2291 i686_deps="x86"
2292 mmx_deps="x86"
2293 mmxext_deps="mmx"
2294 sse_deps="mmxext"
2295 sse2_deps="sse"
2296 sse3_deps="sse2"
2297 ssse3_deps="sse3"
2298 sse4_deps="ssse3"
2299 sse42_deps="sse4"
2300 aesni_deps="sse42"
2301 avx_deps="sse42"
2302 xop_deps="avx"
2303 fma3_deps="avx"
2304 fma4_deps="avx"
2305 avx2_deps="avx"
2306
2307 mmx_external_deps="yasm"
2308 mmx_inline_deps="inline_asm"
2309 mmx_suggest="mmx_external mmx_inline"
2310
2311 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2312     eval dep=\$${ext}_deps
2313     eval ${ext}_external_deps='"${dep}_external"'
2314     eval ${ext}_inline_deps='"${dep}_inline"'
2315     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2316 done
2317
2318 aligned_stack_if_any="aarch64 ppc x86"
2319 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2320 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2321 fast_unaligned_if_any="aarch64 ppc x86"
2322 simd_align_16_if_any="altivec neon sse"
2323 simd_align_32_if_any="avx"
2324
2325 # system capabilities
2326 symver_if_any="symver_asm_label symver_gnu_asm"
2327 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2328
2329 # threading support
2330 atomics_gcc_if="sync_val_compare_and_swap"
2331 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2332 atomics_win32_if="MemoryBarrier"
2333 atomics_native_if_any="$ATOMICS_LIST"
2334 w32threads_deps="atomics_native"
2335 threads_if_any="$THREADS_LIST"
2336
2337 # subsystems
2338 dct_select="rdft"
2339 dirac_parse_select="golomb"
2340 error_resilience_select="me_cmp"
2341 faandct_deps="faan fdctdsp"
2342 faanidct_deps="faan idctdsp"
2343 h264dsp_select="startcode"
2344 hevcparse_select="golomb"
2345 frame_thread_encoder_deps="encoders threads"
2346 intrax8_select="blockdsp idctdsp"
2347 mdct_select="fft"
2348 mdct15_select="fft"
2349 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2350 mpeg_er_select="error_resilience"
2351 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2352 mpegaudiodsp_select="dct"
2353 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2354 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2355 vc1dsp_select="h264chroma qpeldsp startcode"
2356 rdft_select="fft"
2357
2358 # decoders / encoders
2359 aac_decoder_select="mdct15 mdct sinewin"
2360 aac_fixed_decoder_select="mdct sinewin"
2361 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2362 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2363 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2364 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2365 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2366 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2367 adpcm_g722_decoder_select="g722dsp"
2368 adpcm_g722_encoder_select="g722dsp"
2369 aic_decoder_select="golomb idctdsp"
2370 alac_encoder_select="lpc"
2371 als_decoder_select="bswapdsp"
2372 amrnb_decoder_select="lsp"
2373 amrwb_decoder_select="lsp"
2374 amv_decoder_select="sp5x_decoder exif"
2375 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2376 ape_decoder_select="bswapdsp llauddsp"
2377 apng_decoder_select="zlib"
2378 apng_encoder_select="llvidencdsp zlib"
2379 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2380 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2381 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2382 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2383 atrac1_decoder_select="mdct sinewin"
2384 atrac3_decoder_select="mdct"
2385 atrac3p_decoder_select="mdct sinewin"
2386 avrn_decoder_select="exif jpegtables"
2387 bink_decoder_select="blockdsp hpeldsp"
2388 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2389 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2390 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2391 cllc_decoder_select="bswapdsp"
2392 comfortnoise_encoder_select="lpc"
2393 cook_decoder_select="audiodsp mdct sinewin"
2394 cscd_decoder_select="lzo"
2395 cscd_decoder_suggest="zlib"
2396 dca_decoder_select="mdct"
2397 dds_decoder_select="texturedsp"
2398 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2399 dnxhd_decoder_select="blockdsp idctdsp"
2400 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2401 dvvideo_decoder_select="dvprofile idctdsp"
2402 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2403 dxa_decoder_select="zlib"
2404 dxv_decoder_select="lzf texturedsp"
2405 eac3_decoder_select="ac3_decoder"
2406 eac3_encoder_select="ac3_encoder"
2407 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2408 eatgq_decoder_select="aandcttables"
2409 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2410 exr_decoder_select="zlib"
2411 ffv1_decoder_select="rangecoder"
2412 ffv1_encoder_select="rangecoder"
2413 ffvhuff_decoder_select="huffyuv_decoder"
2414 ffvhuff_encoder_select="huffyuv_encoder"
2415 fic_decoder_select="golomb"
2416 flac_decoder_select="flacdsp"
2417 flac_encoder_select="bswapdsp flacdsp lpc"
2418 flashsv2_decoder_select="zlib"
2419 flashsv2_encoder_select="zlib"
2420 flashsv_decoder_select="zlib"
2421 flashsv_encoder_select="zlib"
2422 flv_decoder_select="h263_decoder"
2423 flv_encoder_select="h263_encoder"
2424 fourxm_decoder_select="blockdsp bswapdsp"
2425 fraps_decoder_select="bswapdsp huffman"
2426 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2427 g729_decoder_select="audiodsp"
2428 h261_decoder_select="mpegvideo"
2429 h261_encoder_select="aandcttables mpegvideoenc"
2430 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2431 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2432 h263i_decoder_select="h263_decoder"
2433 h263p_decoder_select="h263_decoder"
2434 h263p_encoder_select="h263_encoder"
2435 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2436 h264_decoder_suggest="error_resilience"
2437 hap_decoder_select="snappy texturedsp"
2438 hap_encoder_deps="libsnappy"
2439 hap_encoder_select="texturedspenc"
2440 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2441 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2442 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2443 iac_decoder_select="imc_decoder"
2444 imc_decoder_select="bswapdsp fft mdct sinewin"
2445 indeo3_decoder_select="hpeldsp"
2446 indeo4_decoder_select="ividsp"
2447 indeo5_decoder_select="ividsp"
2448 interplay_video_decoder_select="hpeldsp"
2449 jpegls_decoder_select="mjpeg_decoder"
2450 jv_decoder_select="blockdsp"
2451 lagarith_decoder_select="llviddsp"
2452 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2453 magicyuv_decoder_select="llviddsp"
2454 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2455 metasound_decoder_select="lsp mdct sinewin"
2456 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2457 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2458 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2459 mjpegb_decoder_select="mjpeg_decoder"
2460 mlp_decoder_select="mlp_parser"
2461 mlp_encoder_select="lpc"
2462 motionpixels_decoder_select="bswapdsp"
2463 mp1_decoder_select="mpegaudio"
2464 mp1float_decoder_select="mpegaudio"
2465 mp2_decoder_select="mpegaudio"
2466 mp2float_decoder_select="mpegaudio"
2467 mp3_decoder_select="mpegaudio"
2468 mp3adu_decoder_select="mpegaudio"
2469 mp3adufloat_decoder_select="mpegaudio"
2470 mp3float_decoder_select="mpegaudio"
2471 mp3on4_decoder_select="mpegaudio"
2472 mp3on4float_decoder_select="mpegaudio"
2473 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2474 mpc8_decoder_select="mpegaudiodsp"
2475 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2476 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2477 mpegvideo_decoder_select="mpegvideo"
2478 mpeg1video_decoder_select="mpegvideo"
2479 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2480 mpeg2video_decoder_select="mpegvideo"
2481 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2482 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2483 mpeg4_encoder_select="h263_encoder"
2484 msa1_decoder_select="mss34dsp"
2485 mscc_decoder_select="zlib"
2486 msmpeg4v1_decoder_select="h263_decoder"
2487 msmpeg4v2_decoder_select="h263_decoder"
2488 msmpeg4v2_encoder_select="h263_encoder"
2489 msmpeg4v3_decoder_select="h263_decoder"
2490 msmpeg4v3_encoder_select="h263_encoder"
2491 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2492 mts2_decoder_select="mss34dsp"
2493 mxpeg_decoder_select="mjpeg_decoder"
2494 nellymoser_decoder_select="mdct sinewin"
2495 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2496 nuv_decoder_select="idctdsp lzo"
2497 on2avc_decoder_select="mdct"
2498 opus_decoder_deps="swresample"
2499 opus_decoder_select="mdct15"
2500 opus_encoder_select="audio_frame_queue mdct15"
2501 png_decoder_select="zlib"
2502 png_encoder_select="llvidencdsp zlib"
2503 prores_decoder_select="blockdsp idctdsp"
2504 prores_encoder_select="fdctdsp"
2505 qcelp_decoder_select="lsp"
2506 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2507 ra_144_decoder_select="audiodsp"
2508 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2509 ralf_decoder_select="golomb"
2510 rawvideo_decoder_select="bswapdsp"
2511 rscc_decoder_select="zlib"
2512 rtjpeg_decoder_select="me_cmp"
2513 rv10_decoder_select="h263_decoder"
2514 rv10_encoder_select="h263_encoder"
2515 rv20_decoder_select="h263_decoder"
2516 rv20_encoder_select="h263_encoder"
2517 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2518 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2519 screenpresso_decoder_select="zlib"
2520 shorten_decoder_select="bswapdsp"
2521 sipr_decoder_select="lsp"
2522 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2523 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2524 sonic_decoder_select="golomb rangecoder"
2525 sonic_encoder_select="golomb rangecoder"
2526 sonic_ls_encoder_select="golomb rangecoder"
2527 sp5x_decoder_select="mjpeg_decoder"
2528 srgc_decoder_select="zlib"
2529 svq1_decoder_select="hpeldsp"
2530 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2531 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2532 svq3_decoder_suggest="zlib"
2533 tak_decoder_select="audiodsp"
2534 tdsc_decoder_select="zlib mjpeg_decoder"
2535 theora_decoder_select="vp3_decoder"
2536 thp_decoder_select="mjpeg_decoder"
2537 tiff_decoder_suggest="zlib lzma"
2538 tiff_encoder_suggest="zlib"
2539 truehd_decoder_select="mlp_parser"
2540 truehd_encoder_select="lpc"
2541 truemotion2_decoder_select="bswapdsp"
2542 truespeech_decoder_select="bswapdsp"
2543 tscc_decoder_select="zlib"
2544 twinvq_decoder_select="mdct lsp sinewin"
2545 txd_decoder_select="texturedsp"
2546 utvideo_decoder_select="bswapdsp llviddsp"
2547 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2548 vble_decoder_select="llviddsp"
2549 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2550 vc1_qsv_decoder_deps="libmfx"
2551 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2552 vc1image_decoder_select="vc1_decoder"
2553 vorbis_decoder_select="mdct"
2554 vorbis_encoder_select="mdct"
2555 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2556 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2557 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2558 vp6a_decoder_select="vp6_decoder"
2559 vp6f_decoder_select="vp6_decoder"
2560 vp7_decoder_select="h264pred videodsp vp8dsp"
2561 vp8_decoder_select="h264pred videodsp vp8dsp"
2562 vp9_decoder_select="videodsp vp9_parser"
2563 webp_decoder_select="vp8_decoder exif"
2564 wmalossless_decoder_select="llauddsp"
2565 wmapro_decoder_select="mdct sinewin wma_freqs"
2566 wmav1_decoder_select="mdct sinewin wma_freqs"
2567 wmav1_encoder_select="mdct sinewin wma_freqs"
2568 wmav2_decoder_select="mdct sinewin wma_freqs"
2569 wmav2_encoder_select="mdct sinewin wma_freqs"
2570 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2571 wmv1_decoder_select="h263_decoder"
2572 wmv1_encoder_select="h263_encoder"
2573 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2574 wmv2_encoder_select="h263_encoder wmv2dsp"
2575 wmv3_decoder_select="vc1_decoder"
2576 wmv3image_decoder_select="wmv3_decoder"
2577 xma1_decoder_select="wmapro_decoder"
2578 xma2_decoder_select="wmapro_decoder"
2579 zerocodec_decoder_select="zlib"
2580 zlib_decoder_select="zlib"
2581 zlib_encoder_select="zlib"
2582 zmbv_decoder_select="zlib"
2583 zmbv_encoder_select="zlib"
2584
2585 # platform codecs
2586 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2587 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2588
2589 # hardware accelerators
2590 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2591 cuda_deps_any="dlopen LoadLibrary"
2592 cuvid_deps="cuda"
2593 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2594 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2595 dxva2_extralibs="-luser32"
2596 dxva2_lib_deps="dxva2"
2597 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2598 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2599 vda_deps="vda_framework pthreads"
2600 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2601 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2602 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2603 xvmc_deps="X11_extensions_XvMClib_h"
2604
2605 h263_vaapi_hwaccel_deps="vaapi"
2606 h263_vaapi_hwaccel_select="h263_decoder"
2607 h263_videotoolbox_hwaccel_deps="videotoolbox"
2608 h263_videotoolbox_hwaccel_select="h263_decoder"
2609 h264_cuvid_hwaccel_deps="cuda cuvid"
2610 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2611 h264_d3d11va_hwaccel_deps="d3d11va"
2612 h264_d3d11va_hwaccel_select="h264_decoder"
2613 h264_dxva2_hwaccel_deps="dxva2"
2614 h264_dxva2_hwaccel_select="h264_decoder"
2615 h264_mediacodec_hwaccel_deps="mediacodec"
2616 h264_mmal_hwaccel_deps="mmal"
2617 h264_qsv_hwaccel_deps="libmfx"
2618 h264_vaapi_hwaccel_deps="vaapi"
2619 h264_vaapi_hwaccel_select="h264_decoder"
2620 h264_vda_hwaccel_deps="vda"
2621 h264_vda_hwaccel_select="h264_decoder"
2622 h264_vda_old_hwaccel_deps="vda"
2623 h264_vda_old_hwaccel_select="h264_decoder"
2624 h264_vdpau_hwaccel_deps="vdpau"
2625 h264_vdpau_hwaccel_select="h264_decoder"
2626 h264_videotoolbox_hwaccel_deps="videotoolbox"
2627 h264_videotoolbox_hwaccel_select="h264_decoder"
2628 hevc_cuvid_hwaccel_deps="cuda cuvid"
2629 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2630 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2631 hevc_d3d11va_hwaccel_select="hevc_decoder"
2632 hevc_mediacodec_hwaccel_deps="mediacodec"
2633 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2634 hevc_dxva2_hwaccel_select="hevc_decoder"
2635 hevc_qsv_hwaccel_deps="libmfx"
2636 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2637 hevc_vaapi_hwaccel_select="hevc_decoder"
2638 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2639 hevc_vdpau_hwaccel_select="hevc_decoder"
2640 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2641 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2642 mpeg_xvmc_hwaccel_deps="xvmc"
2643 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2644 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2645 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2646 mpeg1_vdpau_hwaccel_deps="vdpau"
2647 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2648 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2649 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2650 mpeg1_xvmc_hwaccel_deps="xvmc"
2651 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2652 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2653 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2654 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2655 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2656 mpeg2_dxva2_hwaccel_deps="dxva2"
2657 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2658 mpeg2_mmal_hwaccel_deps="mmal"
2659 mpeg2_qsv_hwaccel_deps="libmfx"
2660 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2661 mpeg2_vaapi_hwaccel_deps="vaapi"
2662 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2663 mpeg2_vdpau_hwaccel_deps="vdpau"
2664 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2665 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2666 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2667 mpeg2_xvmc_hwaccel_deps="xvmc"
2668 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2669 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2670 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2671 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2672 mpeg4_mmal_hwaccel_deps="mmal"
2673 mpeg4_vaapi_hwaccel_deps="vaapi"
2674 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2675 mpeg4_vdpau_hwaccel_deps="vdpau"
2676 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2677 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2678 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2679 vc1_cuvid_hwaccel_deps="cuda cuvid"
2680 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2681 vc1_d3d11va_hwaccel_deps="d3d11va"
2682 vc1_d3d11va_hwaccel_select="vc1_decoder"
2683 vc1_dxva2_hwaccel_deps="dxva2"
2684 vc1_dxva2_hwaccel_select="vc1_decoder"
2685 vc1_mmal_hwaccel_deps="mmal"
2686 vc1_qsv_hwaccel_deps="libmfx"
2687 vc1_qsv_hwaccel_select="qsvdec_vc1"
2688 vc1_vaapi_hwaccel_deps="vaapi"
2689 vc1_vaapi_hwaccel_select="vc1_decoder"
2690 vc1_vdpau_hwaccel_deps="vdpau"
2691 vc1_vdpau_hwaccel_select="vc1_decoder"
2692 vp8_cuvid_hwaccel_deps="cuda cuvid"
2693 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2694 vp9_cuvid_hwaccel_deps="cuda cuvid"
2695 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2696 vp8_mediacodec_hwaccel_deps="mediacodec"
2697 vp8_qsv_hwaccel_deps="libmfx"
2698 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2699 vp9_d3d11va_hwaccel_select="vp9_decoder"
2700 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2701 vp9_dxva2_hwaccel_select="vp9_decoder"
2702 vp9_mediacodec_hwaccel_deps="mediacodec"
2703 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2704 vp9_vaapi_hwaccel_select="vp9_decoder"
2705 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2706 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2707 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2708 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2709
2710 # hardware-accelerated codecs
2711 omx_deps="dlopen pthreads"
2712 omx_extralibs='$ldl'
2713 omx_rpi_select="omx"
2714 qsvdec_select="qsv"
2715 qsvenc_select="qsv"
2716 vaapi_encode_deps="vaapi"
2717
2718 hwupload_cuda_filter_deps="cuda"
2719 scale_npp_filter_deps="cuda libnpp"
2720
2721 nvenc_deps="cuda"
2722 nvenc_deps_any="dlopen LoadLibrary"
2723 nvenc_encoder_deps="nvenc"
2724
2725 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2726 h264_cuvid_decoder_deps="cuda cuvid"
2727 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2728 h264_mediacodec_decoder_deps="mediacodec"
2729 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2730 h264_mmal_decoder_deps="mmal"
2731 h264_nvenc_encoder_deps="nvenc"
2732 h264_omx_encoder_deps="omx"
2733 h264_qsv_decoder_deps="libmfx"
2734 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2735 h264_qsv_encoder_deps="libmfx"
2736 h264_qsv_encoder_select="qsvenc"
2737 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2738 h264_vaapi_encoder_select="vaapi_encode golomb"
2739 h264_vda_decoder_deps="vda"
2740 h264_vda_decoder_select="h264_decoder"
2741 h264_vdpau_decoder_deps="vdpau"
2742 h264_vdpau_decoder_select="h264_decoder"
2743 hevc_cuvid_decoder_deps="cuda cuvid"
2744 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2745 hevc_mediacodec_decoder_deps="mediacodec"
2746 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2747 hevc_nvenc_encoder_deps="nvenc"
2748 hevc_qsv_decoder_deps="libmfx"
2749 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2750 hevc_qsv_encoder_deps="libmfx"
2751 hevc_qsv_encoder_select="hevcparse qsvenc"
2752 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2753 hevc_vaapi_encoder_select="vaapi_encode golomb"
2754 mjpeg_cuvid_decoder_deps="cuda cuvid"
2755 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2756 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2757 mpeg1_cuvid_decoder_deps="cuda cuvid"
2758 mpeg1_vdpau_decoder_deps="vdpau"
2759 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2760 mpeg2_crystalhd_decoder_select="crystalhd"
2761 mpeg2_cuvid_decoder_deps="cuda cuvid"
2762 mpeg2_mmal_decoder_deps="mmal"
2763 mpeg2_qsv_decoder_deps="libmfx"
2764 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2765 mpeg2_qsv_encoder_deps="libmfx"
2766 mpeg2_qsv_encoder_select="qsvenc"
2767 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2768 mpeg2_vaapi_encoder_select="vaapi_encode"
2769 mpeg4_crystalhd_decoder_select="crystalhd"
2770 mpeg4_cuvid_decoder_deps="cuda cuvid"
2771 mpeg4_mediacodec_decoder_deps="mediacodec"
2772 mpeg4_mmal_decoder_deps="mmal"
2773 mpeg4_omx_encoder_deps="omx"
2774 mpeg4_vdpau_decoder_deps="vdpau"
2775 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2776 mpeg_vdpau_decoder_deps="vdpau"
2777 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2778 msmpeg4_crystalhd_decoder_select="crystalhd"
2779 nvenc_h264_encoder_select="h264_nvenc_encoder"
2780 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2781 vc1_crystalhd_decoder_select="crystalhd"
2782 vc1_cuvid_decoder_deps="cuda cuvid"
2783 vc1_mmal_decoder_deps="mmal"
2784 vc1_vdpau_decoder_deps="vdpau"
2785 vc1_vdpau_decoder_select="vc1_decoder"
2786 vp8_cuvid_decoder_deps="cuda cuvid"
2787 vp8_mediacodec_decoder_deps="mediacodec"
2788 vp8_qsv_decoder_deps="libmfx"
2789 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2790 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2791 vp8_vaapi_encoder_select="vaapi_encode"
2792 vp9_cuvid_decoder_deps="cuda cuvid"
2793 vp9_mediacodec_decoder_deps="mediacodec"
2794 wmv3_crystalhd_decoder_select="crystalhd"
2795 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2796
2797 # parsers
2798 h264_parser_select="golomb h264dsp h264parse"
2799 hevc_parser_select="hevcparse"
2800 mpegaudio_parser_select="mpegaudioheader"
2801 mpegvideo_parser_select="mpegvideo"
2802 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2803 vc1_parser_select="vc1dsp"
2804
2805 # bitstream_filters
2806 mjpeg2jpeg_bsf_select="jpegtables"
2807
2808 # external libraries
2809 aac_at_decoder_deps="audiotoolbox"
2810 ac3_at_decoder_deps="audiotoolbox"
2811 ac3_at_decoder_select="ac3_parser"
2812 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2813 alac_at_decoder_deps="audiotoolbox"
2814 amr_nb_at_decoder_deps="audiotoolbox"
2815 avisynth_deps_any="dlopen LoadLibrary"
2816 avisynth_demuxer_deps="avisynth"
2817 avisynth_demuxer_select="riffdec"
2818 eac3_at_decoder_deps="audiotoolbox"
2819 eac3_at_decoder_select="ac3_parser"
2820 gsm_ms_at_decoder_deps="audiotoolbox"
2821 ilbc_at_decoder_deps="audiotoolbox"
2822 mp1_at_decoder_deps="audiotoolbox"
2823 mp2_at_decoder_deps="audiotoolbox"
2824 mp3_at_decoder_deps="audiotoolbox"
2825 mp1_at_decoder_select="mpegaudioheader"
2826 mp2_at_decoder_select="mpegaudioheader"
2827 mp3_at_decoder_select="mpegaudioheader"
2828 pcm_alaw_at_decoder_deps="audiotoolbox"
2829 pcm_mulaw_at_decoder_deps="audiotoolbox"
2830 qdmc_at_decoder_deps="audiotoolbox"
2831 qdm2_at_decoder_deps="audiotoolbox"
2832 aac_at_encoder_deps="audiotoolbox"
2833 aac_at_encoder_select="audio_frame_queue"
2834 alac_at_encoder_deps="audiotoolbox"
2835 alac_at_encoder_select="audio_frame_queue"
2836 ilbc_at_encoder_deps="audiotoolbox"
2837 ilbc_at_encoder_select="audio_frame_queue"
2838 pcm_alaw_at_encoder_deps="audiotoolbox"
2839 pcm_alaw_at_encoder_select="audio_frame_queue"
2840 pcm_mulaw_at_encoder_deps="audiotoolbox"
2841 pcm_mulaw_at_encoder_select="audio_frame_queue"
2842 chromaprint_muxer_deps="chromaprint"
2843 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2844 libcelt_decoder_deps="libcelt"
2845 libfdk_aac_decoder_deps="libfdk_aac"
2846 libfdk_aac_encoder_deps="libfdk_aac"
2847 libfdk_aac_encoder_select="audio_frame_queue"
2848 libgme_demuxer_deps="libgme"
2849 libgsm_decoder_deps="libgsm"
2850 libgsm_encoder_deps="libgsm"
2851 libgsm_ms_decoder_deps="libgsm"
2852 libgsm_ms_encoder_deps="libgsm"
2853 libilbc_decoder_deps="libilbc"
2854 libilbc_encoder_deps="libilbc"
2855 libkvazaar_encoder_deps="libkvazaar"
2856 libmodplug_demuxer_deps="libmodplug"
2857 libmp3lame_encoder_deps="libmp3lame"
2858 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2859 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2860 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2861 libopencore_amrnb_encoder_select="audio_frame_queue"
2862 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2863 libopenh264_decoder_deps="libopenh264"
2864 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2865 libopenh264_encoder_deps="libopenh264"
2866 libopenjpeg_decoder_deps="libopenjpeg"
2867 libopenjpeg_encoder_deps="libopenjpeg"
2868 libopenmpt_demuxer_deps="libopenmpt"
2869 libopus_decoder_deps="libopus"
2870 libopus_encoder_deps="libopus"
2871 libopus_encoder_select="audio_frame_queue"
2872 libschroedinger_decoder_deps="libschroedinger"
2873 libschroedinger_encoder_deps="libschroedinger"
2874 libshine_encoder_deps="libshine"
2875 libshine_encoder_select="audio_frame_queue"
2876 libspeex_decoder_deps="libspeex"
2877 libspeex_encoder_deps="libspeex"
2878 libspeex_encoder_select="audio_frame_queue"
2879 libtheora_encoder_deps="libtheora"
2880 libtwolame_encoder_deps="libtwolame"
2881 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2882 libvorbis_decoder_deps="libvorbis"
2883 libvorbis_encoder_deps="libvorbis"
2884 libvorbis_encoder_select="audio_frame_queue"
2885 libvpx_vp8_decoder_deps="libvpx"
2886 libvpx_vp8_encoder_deps="libvpx"
2887 libvpx_vp9_decoder_deps="libvpx"
2888 libvpx_vp9_encoder_deps="libvpx"
2889 libwavpack_encoder_deps="libwavpack"
2890 libwavpack_encoder_select="audio_frame_queue"
2891 libwebp_encoder_deps="libwebp"
2892 libwebp_anim_encoder_deps="libwebp"
2893 libx262_encoder_deps="libx262"
2894 libx264_encoder_deps="libx264"
2895 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2896 libx264rgb_encoder_select="libx264_encoder"
2897 libx265_encoder_deps="libx265"
2898 libxavs_encoder_deps="libxavs"
2899 libxvid_encoder_deps="libxvid"
2900 libzvbi_teletext_decoder_deps="libzvbi"
2901 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2902 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2903 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2904 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2905 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2906
2907 # demuxers / muxers
2908 ac3_demuxer_select="ac3_parser"
2909 aiff_muxer_select="iso_media"
2910 asf_demuxer_select="riffdec"
2911 asf_o_demuxer_select="riffdec"
2912 asf_muxer_select="riffenc"
2913 asf_stream_muxer_select="asf_muxer"
2914 avi_demuxer_select="iso_media riffdec exif"
2915 avi_muxer_select="riffenc"
2916 caf_demuxer_select="iso_media riffdec"
2917 caf_muxer_select="iso_media"
2918 dash_muxer_select="mp4_muxer"
2919 dirac_demuxer_select="dirac_parser"
2920 dts_demuxer_select="dca_parser"
2921 dtshd_demuxer_select="dca_parser"
2922 dv_demuxer_select="dvprofile"
2923 dv_muxer_select="dvprofile"
2924 dxa_demuxer_select="riffdec"
2925 eac3_demuxer_select="ac3_parser"
2926 f4v_muxer_select="mov_muxer"
2927 fifo_muxer_deps="threads"
2928 flac_demuxer_select="flac_parser"
2929 hds_muxer_select="flv_muxer"
2930 hls_muxer_select="mpegts_muxer"
2931 image2_alias_pix_demuxer_select="image2_demuxer"
2932 image2_brender_pix_demuxer_select="image2_demuxer"
2933 ipod_muxer_select="mov_muxer"
2934 ismv_muxer_select="mov_muxer"
2935 libnut_demuxer_deps="libnut"
2936 libnut_muxer_deps="libnut"
2937 matroska_audio_muxer_select="matroska_muxer"
2938 matroska_demuxer_select="iso_media riffdec"
2939 matroska_demuxer_suggest="bzlib lzo zlib"
2940 matroska_muxer_select="iso_media riffenc"
2941 mmf_muxer_select="riffenc"
2942 mov_demuxer_select="iso_media riffdec"
2943 mov_demuxer_suggest="zlib"
2944 mov_muxer_select="iso_media riffenc rtpenc_chain"
2945 mp3_demuxer_select="mpegaudio_parser"
2946 mp3_muxer_select="mpegaudioheader"
2947 mp4_muxer_select="mov_muxer"
2948 mpegts_demuxer_select="iso_media"
2949 mpegts_muxer_select="adts_muxer latm_muxer"
2950 mpegtsraw_demuxer_select="mpegts_demuxer"
2951 mxf_d10_muxer_select="mxf_muxer"
2952 mxf_opatom_muxer_select="mxf_muxer"
2953 nut_muxer_select="riffenc"
2954 nuv_demuxer_select="riffdec"
2955 oga_muxer_select="ogg_muxer"
2956 ogg_demuxer_select="dirac_parse"
2957 ogv_muxer_select="ogg_muxer"
2958 opus_muxer_select="ogg_muxer"
2959 psp_muxer_select="mov_muxer"
2960 rtp_demuxer_select="sdp_demuxer"
2961 rtp_muxer_select="golomb"
2962 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2963 rtsp_demuxer_select="http_protocol rtpdec"
2964 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2965 sap_demuxer_select="sdp_demuxer"
2966 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2967 sdp_demuxer_select="rtpdec"
2968 smoothstreaming_muxer_select="ismv_muxer"
2969 spdif_muxer_select="aac_parser"
2970 spx_muxer_select="ogg_muxer"
2971 swf_demuxer_suggest="zlib"
2972 tak_demuxer_select="tak_parser"
2973 tg2_muxer_select="mov_muxer"
2974 tgp_muxer_select="mov_muxer"
2975 vobsub_demuxer_select="mpegps_demuxer"
2976 w64_demuxer_select="wav_demuxer"
2977 w64_muxer_select="wav_muxer"
2978 wav_demuxer_select="riffdec"
2979 wav_muxer_select="riffenc"
2980 webm_muxer_select="iso_media riffenc"
2981 webm_dash_manifest_demuxer_select="matroska_demuxer"
2982 wtv_demuxer_select="mpegts_demuxer riffdec"
2983 wtv_muxer_select="mpegts_muxer riffenc"
2984 xmv_demuxer_select="riffdec"
2985 xwma_demuxer_select="riffdec"
2986
2987 # indevs / outdevs
2988 alsa_indev_deps="alsa"
2989 alsa_outdev_deps="alsa"
2990 avfoundation_indev_deps="pthreads"
2991 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2992 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2993 caca_outdev_deps="libcaca"
2994 decklink_indev_deps="decklink threads"
2995 decklink_indev_extralibs="-lstdc++"
2996 decklink_outdev_deps="decklink threads"
2997 decklink_outdev_extralibs="-lstdc++"
2998 dshow_indev_deps="IBaseFilter"
2999 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3000 dv1394_indev_deps="dv1394"
3001 dv1394_indev_select="dv_demuxer"
3002 fbdev_indev_deps="linux_fb_h"
3003 fbdev_outdev_deps="linux_fb_h"
3004 gdigrab_indev_deps="CreateDIBSection"
3005 gdigrab_indev_extralibs="-lgdi32"
3006 gdigrab_indev_select="bmp_decoder"
3007 iec61883_indev_deps="libiec61883"
3008 jack_indev_deps="jack"
3009 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3010 lavfi_indev_deps="avfilter"
3011 libcdio_indev_deps="libcdio"
3012 libdc1394_indev_deps="libdc1394"
3013 libv4l2_indev_deps="libv4l2"
3014 openal_indev_deps="openal"
3015 opengl_outdev_deps="opengl"
3016 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3017 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3018 pulse_indev_deps="libpulse"
3019 pulse_outdev_deps="libpulse"
3020 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
3021 qtkit_indev_select="qtkit"
3022 sdl2_outdev_deps="sdl2"
3023 sndio_indev_deps="sndio"
3024 sndio_outdev_deps="sndio"
3025 v4l_indev_deps="linux_videodev_h"
3026 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3027 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3028 vfwcap_indev_deps="vfw32 vfwcap_defines"
3029 xcbgrab_indev_deps="libxcb"
3030 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3031 xv_outdev_extralibs="-lXv -lX11 -lXext"
3032
3033 # protocols
3034 async_protocol_deps="threads"
3035 bluray_protocol_deps="libbluray"
3036 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3037 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3038 ffrtmpcrypt_protocol_select="tcp_protocol"
3039 ffrtmphttp_protocol_deps="!librtmp_protocol"
3040 ffrtmphttp_protocol_select="http_protocol"
3041 ftp_protocol_select="tcp_protocol"
3042 gopher_protocol_select="network"
3043 http_protocol_select="tcp_protocol"
3044 httpproxy_protocol_select="tcp_protocol"
3045 https_protocol_select="tls_protocol"
3046 icecast_protocol_select="http_protocol"
3047 librtmp_protocol_deps="librtmp"
3048 librtmpe_protocol_deps="librtmp"
3049 librtmps_protocol_deps="librtmp"
3050 librtmpt_protocol_deps="librtmp"
3051 librtmpte_protocol_deps="librtmp"
3052 libsmbclient_protocol_deps="libsmbclient gplv3"
3053 libssh_protocol_deps="libssh"
3054 mmsh_protocol_select="http_protocol"
3055 mmst_protocol_select="network"
3056 rtmp_protocol_deps="!librtmp_protocol"
3057 rtmp_protocol_select="tcp_protocol"
3058 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3059 rtmps_protocol_deps="!librtmp_protocol"
3060 rtmps_protocol_select="tls_protocol"
3061 rtmpt_protocol_select="ffrtmphttp_protocol"
3062 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3063 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3064 rtp_protocol_select="udp_protocol"
3065 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3066 sctp_protocol_select="network"
3067 srtp_protocol_select="rtp_protocol srtp"
3068 tcp_protocol_select="network"
3069 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3070 tls_gnutls_protocol_select="tcp_protocol"
3071 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3072 tls_openssl_protocol_select="tcp_protocol"
3073 tls_schannel_protocol_deps="schannel"
3074 tls_schannel_protocol_select="tcp_protocol"
3075 tls_securetransport_protocol_deps="securetransport"
3076 tls_securetransport_protocol_select="tcp_protocol"
3077 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3078 udp_protocol_select="network"
3079 udplite_protocol_select="network"
3080 unix_protocol_deps="sys_un_h"
3081 unix_protocol_select="network"
3082
3083 # filters
3084 afftfilt_filter_deps="avcodec"
3085 afftfilt_filter_select="fft"
3086 amovie_filter_deps="avcodec avformat"
3087 aresample_filter_deps="swresample"
3088 ass_filter_deps="libass"
3089 atempo_filter_deps="avcodec"
3090 atempo_filter_select="rdft"
3091 azmq_filter_deps="libzmq"
3092 blackframe_filter_deps="gpl"
3093 boxblur_filter_deps="gpl"
3094 bs2b_filter_deps="libbs2b"
3095 colormatrix_filter_deps="gpl"
3096 cover_rect_filter_deps="avcodec avformat gpl"
3097 cropdetect_filter_deps="gpl"
3098 deinterlace_qsv_filter_deps="libmfx"
3099 deinterlace_vaapi_filter_deps="vaapi"
3100 delogo_filter_deps="gpl"
3101 deshake_filter_select="pixelutils"
3102 drawtext_filter_deps="libfreetype"
3103 elbg_filter_deps="avcodec"
3104 eq_filter_deps="gpl"
3105 fftfilt_filter_deps="avcodec"
3106 fftfilt_filter_select="rdft"
3107 find_rect_filter_deps="avcodec avformat gpl"
3108 firequalizer_filter_deps="avcodec"
3109 firequalizer_filter_select="rdft"
3110 flite_filter_deps="libflite"
3111 framerate_filter_select="pixelutils"
3112 frei0r_filter_deps="frei0r dlopen"
3113 frei0r_src_filter_deps="frei0r dlopen"
3114 fspp_filter_deps="gpl"
3115 geq_filter_deps="gpl"
3116 histeq_filter_deps="gpl"
3117 hqdn3d_filter_deps="gpl"
3118 interlace_filter_deps="gpl"
3119 kerndeint_filter_deps="gpl"
3120 ladspa_filter_deps="ladspa dlopen"
3121 mcdeint_filter_deps="avcodec gpl"
3122 movie_filter_deps="avcodec avformat"
3123 mpdecimate_filter_deps="gpl"
3124 mpdecimate_filter_select="pixelutils"
3125 mptestsrc_filter_deps="gpl"
3126 negate_filter_deps="lut_filter"
3127 nnedi_filter_deps="gpl"
3128 ocr_filter_deps="libtesseract"
3129 ocv_filter_deps="libopencv"
3130 owdenoise_filter_deps="gpl"
3131 pan_filter_deps="swresample"
3132 perspective_filter_deps="gpl"
3133 phase_filter_deps="gpl"
3134 pp7_filter_deps="gpl"
3135 pp_filter_deps="gpl postproc"
3136 pullup_filter_deps="gpl"
3137 removelogo_filter_deps="avcodec avformat swscale"
3138 repeatfields_filter_deps="gpl"
3139 resample_filter_deps="avresample"
3140 rubberband_filter_deps="librubberband"
3141 sab_filter_deps="gpl swscale"
3142 scale2ref_filter_deps="swscale"
3143 scale_filter_deps="swscale"
3144 scale_qsv_filter_deps="libmfx"
3145 select_filter_select="pixelutils"
3146 showcqt_filter_deps="avcodec avformat swscale"
3147 showcqt_filter_select="fft"
3148 showfreqs_filter_deps="avcodec"
3149 showfreqs_filter_select="fft"
3150 showspectrum_filter_deps="avcodec"
3151 showspectrum_filter_select="fft"
3152 showspectrumpic_filter_deps="avcodec"
3153 showspectrumpic_filter_select="fft"
3154 signature_filter_deps="gpl avcodec avformat"
3155 smartblur_filter_deps="gpl swscale"
3156 sofalizer_filter_deps="netcdf avcodec"
3157 sofalizer_filter_select="fft"
3158 spectrumsynth_filter_deps="avcodec"
3159 spectrumsynth_filter_select="fft"
3160 spp_filter_deps="gpl avcodec"
3161 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3162 stereo3d_filter_deps="gpl"
3163 subtitles_filter_deps="avformat avcodec libass"
3164 super2xsai_filter_deps="gpl"
3165 pixfmts_super2xsai_test_deps="super2xsai_filter"
3166 tinterlace_filter_deps="gpl"
3167 tinterlace_merge_test_deps="tinterlace_filter"
3168 tinterlace_pad_test_deps="tinterlace_filter"
3169 uspp_filter_deps="gpl avcodec"
3170 vaguedenoiser_filter_deps="gpl"
3171 vidstabdetect_filter_deps="libvidstab"
3172 vidstabtransform_filter_deps="libvidstab"
3173 zmq_filter_deps="libzmq"
3174 zoompan_filter_deps="swscale"
3175 zscale_filter_deps="libzimg"
3176 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3177
3178 # examples
3179 avio_dir_cmd_deps="avformat avutil"
3180 avio_reading_deps="avformat avcodec avutil"
3181 decode_audio_example_deps="avcodec avutil"
3182 decode_video_example_deps="avcodec avutil"
3183 demuxing_decoding_example_deps="avcodec avformat avutil"
3184 encode_audio_example_deps="avcodec avutil"
3185 encode_video_example_deps="avcodec avutil"
3186 extract_mvs_example_deps="avcodec avformat avutil"
3187 filter_audio_example_deps="avfilter avutil"
3188 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3189 filtering_video_example_deps="avfilter avcodec avformat avutil"
3190 http_multiclient_example_deps="avformat avutil fork"
3191 metadata_example_deps="avformat avutil"
3192 muxing_example_deps="avcodec avformat avutil swscale"
3193 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3194 remuxing_example_deps="avcodec avformat avutil"
3195 resampling_audio_example_deps="avutil swresample"
3196 scaling_video_example_deps="avutil swscale"
3197 transcode_aac_example_deps="avcodec avformat swresample"
3198 transcoding_example_deps="avfilter avcodec avformat avutil"
3199
3200 # libraries, in linking order
3201 avcodec_deps="avutil"
3202 avcodec_select="null_bsf"
3203 avdevice_deps="avformat avcodec avutil"
3204 avfilter_deps="avutil"
3205 avformat_deps="avcodec avutil"
3206 avresample_deps="avutil"
3207 postproc_deps="avutil gpl"
3208 swresample_deps="avutil"
3209 swscale_deps="avutil"
3210
3211 # programs
3212 ffmpeg_deps="avcodec avfilter avformat swresample"
3213 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3214                null_filter
3215                trim_filter"
3216 ffplay_deps="avcodec avformat swscale swresample sdl2"
3217 ffplay_extralibs='$sdl2_extralibs'
3218 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3219 ffprobe_deps="avcodec avformat"
3220 ffserver_deps="avformat fork sarestart"
3221 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3222
3223 # documentation
3224 podpages_deps="perl"
3225 manpages_deps="perl pod2man"
3226 htmlpages_deps="perl"
3227 htmlpages_deps_any="makeinfo_html texi2html"
3228 txtpages_deps="perl makeinfo"
3229 doc_deps_any="manpages htmlpages podpages txtpages"
3230
3231 # default parameters
3232
3233 logfile="ffbuild/config.log"
3234
3235 # installation paths
3236 prefix_default="/usr/local"
3237 bindir_default='${prefix}/bin'
3238 datadir_default='${prefix}/share/ffmpeg'
3239 docdir_default='${prefix}/share/doc/ffmpeg'
3240 incdir_default='${prefix}/include'
3241 libdir_default='${prefix}/lib'
3242 mandir_default='${prefix}/share/man'
3243
3244 # toolchain
3245 ar_default="ar"
3246 cc_default="gcc"
3247 cxx_default="g++"
3248 host_cc_default="gcc"
3249 doxygen_default="doxygen"
3250 install="install"
3251 ln_s_default="ln -s -f"
3252 nm_default="nm -g"
3253 objformat="elf"
3254 pkg_config_default=pkg-config
3255 ranlib_default="ranlib"
3256 strip_default="strip"
3257 version_script='--version-script'
3258 yasmexe_default="yasm"
3259 windres_default="windres"
3260
3261 # OS
3262 target_os_default=$(tolower $(uname -s))
3263 host_os=$target_os_default
3264
3265 # machine
3266 if test "$target_os_default" = aix; then
3267     arch_default=$(uname -p)
3268     strip_default="strip -X32_64"
3269 else
3270     arch_default=$(uname -m)
3271 fi
3272 cpu="generic"
3273 intrinsics="none"
3274
3275 # configurable options
3276 enable $PROGRAM_LIST
3277 enable $DOCUMENT_LIST
3278 enable $EXAMPLE_LIST
3279 enable $(filter_out avresample $LIBRARY_LIST)
3280 enable stripping
3281
3282 enable asm
3283 enable debug
3284 enable doc
3285 enable faan faandct faanidct
3286 enable optimizations
3287 enable runtime_cpudetect
3288 enable safe_bitstream_reader
3289 enable static
3290 enable swscale_alpha
3291 enable valgrind_backtrace
3292
3293 sws_max_filter_size_default=256
3294 set_default sws_max_filter_size
3295
3296 # build settings
3297 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3298 LIBPREF="lib"
3299 LIBSUF=".a"
3300 FULLNAME='$(NAME)$(BUILDSUF)'
3301 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3302 SLIBPREF="lib"
3303 SLIBSUF=".so"
3304 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3305 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3306 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3307 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3308 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3309 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3310 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3311
3312 asflags_filter=echo
3313 cflags_filter=echo
3314 ldflags_filter=echo
3315
3316 AS_C='-c'
3317 AS_O='-o $@'
3318 CC_C='-c'
3319 CC_E='-E -o $@'
3320 CC_O='-o $@'
3321 CXX_C='-c'
3322 CXX_O='-o $@'
3323 OBJCC_C='-c'
3324 OBJCC_E='-E -o $@'
3325 OBJCC_O='-o $@'
3326 LD_O='-o $@'
3327 LD_LIB='-l%'
3328 LD_PATH='-L'
3329 HOSTCC_C='-c'
3330 HOSTCC_E='-E -o $@'
3331 HOSTCC_O='-o $@'
3332 HOSTLD_O='-o $@'
3333
3334 host_extralibs='-lm'
3335 host_cflags_filter=echo
3336 host_ldflags_filter=echo
3337
3338 target_path='$(CURDIR)'
3339
3340 # since the object filename is not given with the -MM flag, the compiler
3341 # is only able to print the basename, and we must add the path ourselves
3342 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3343 DEPFLAGS='-MM'
3344
3345 # find source path
3346 if test -f configure; then
3347     source_path=.
3348 else
3349     source_path=$(cd $(dirname "$0"); pwd)
3350     case "$source_path" in
3351         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3352     esac
3353     test -e "$source_path/config.h" &&
3354         die "Out of tree builds are impossible with config.h in source dir."
3355 fi
3356
3357 for v in "$@"; do
3358     r=${v#*=}
3359     l=${v%"$r"}
3360     r=$(sh_quote "$r")
3361     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3362 done
3363
3364 find_things(){
3365     thing=$1
3366     pattern=$2
3367     file=$source_path/$3
3368     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3369 }
3370
3371 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3372 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3373 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3374 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3375 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3376 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3377 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3378 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3379 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3380
3381 find_things_extern(){
3382     thing=$1
3383     pattern=$2
3384     file=$source_path/$3
3385     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3386 }
3387
3388 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3389 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3390
3391 ALL_COMPONENTS="
3392     $BSF_LIST
3393     $DECODER_LIST
3394     $DEMUXER_LIST
3395     $ENCODER_LIST
3396     $FILTER_LIST
3397     $HWACCEL_LIST
3398     $INDEV_LIST
3399     $MUXER_LIST
3400     $OUTDEV_LIST
3401     $PARSER_LIST
3402     $PROTOCOL_LIST
3403 "
3404
3405 for n in $COMPONENT_LIST; do
3406     v=$(toupper ${n%s})_LIST
3407     eval enable \$$v
3408     eval ${n}_if_any="\$$v"
3409 done
3410
3411 enable $ARCH_EXT_LIST
3412
3413 die_unknown(){
3414     echo "Unknown option \"$1\"."
3415     echo "See $0 --help for available options."
3416     exit 1
3417 }
3418
3419 print_in_columns() {
3420     cols=$(expr $ncols / 24)
3421     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3422 }
3423
3424 show_list() {
3425     suffix=_$1
3426     shift
3427     echo $* | sed s/$suffix//g | print_in_columns
3428     exit 0
3429 }
3430
3431 rand_list(){
3432     IFS=', '
3433     set -- $*
3434     unset IFS
3435     for thing; do
3436         comp=${thing%:*}
3437         prob=${thing#$comp}
3438         prob=${prob#:}
3439         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3440         echo "prob ${prob:-0.5}"
3441         printf '%s\n' $comp
3442     done
3443 }
3444
3445 do_random(){
3446     action=$1
3447     shift
3448     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3449     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3450 }
3451
3452 for opt do
3453     optval="${opt#*=}"
3454     case "$opt" in
3455         --extra-ldflags=*)
3456             add_ldflags $optval
3457         ;;
3458         --extra-ldexeflags=*)
3459             add_ldexeflags $optval
3460         ;;
3461         --extra-ldlibflags=*)
3462             add_ldlibflags $optval
3463         ;;
3464         --extra-libs=*)
3465             add_extralibs $optval
3466         ;;
3467         --disable-devices)
3468             disable $INDEV_LIST $OUTDEV_LIST
3469         ;;
3470         --enable-debug=*)
3471             debuglevel="$optval"
3472         ;;
3473         --disable-programs)
3474             disable $PROGRAM_LIST
3475         ;;
3476         --disable-everything)
3477             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3478         ;;
3479         --disable-all)
3480             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3481             disable $LIBRARY_LIST $PROGRAM_LIST doc
3482             enable avutil
3483         ;;
3484         --enable-random|--disable-random)
3485             action=${opt%%-random}
3486             do_random ${action#--} $COMPONENT_LIST
3487         ;;
3488         --enable-random=*|--disable-random=*)
3489             action=${opt%%-random=*}
3490             do_random ${action#--} $optval
3491         ;;
3492         --enable-*=*|--disable-*=*)
3493             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3494             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3495             eval list=\$$(toupper $thing)_LIST
3496             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3497             list=$(filter "$name" $list)
3498             [ "$list" = "" ] && warn "Option $opt did not match anything"
3499             $action $list
3500         ;;
3501         --enable-?*|--disable-?*)
3502             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3503             if is_in $option $COMPONENT_LIST; then
3504                 test $action = disable && action=unset
3505                 eval $action \$$(toupper ${option%s})_LIST
3506             elif is_in $option $CMDLINE_SELECT; then
3507                 $action $option
3508             else
3509                 die_unknown $opt
3510             fi
3511         ;;
3512         --list-*)
3513             NAME="${opt#--list-}"
3514             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3515             NAME=${NAME%s}
3516             eval show_list $NAME \$$(toupper $NAME)_LIST
3517         ;;
3518         --help|-h) show_help
3519         ;;
3520         --quiet|-q) quiet=yes
3521         ;;
3522         --fatal-warnings) enable fatal_warnings
3523         ;;
3524         --libfuzzer=*)
3525             libfuzzer_path="$optval"
3526         ;;
3527         *)
3528             optname="${opt%%=*}"
3529             optname="${optname#--}"
3530             optname=$(echo "$optname" | sed 's/-/_/g')
3531             if is_in $optname $CMDLINE_SET; then
3532                 eval $optname='$optval'
3533             elif is_in $optname $CMDLINE_APPEND; then
3534                 append $optname "$optval"
3535             else
3536                 die_unknown $opt
3537             fi
3538         ;;
3539     esac
3540 done
3541
3542 for e in $env; do
3543     eval "export $e"
3544 done
3545
3546 # Mark specifically enabled, but normally autodetected libraries as requested.
3547 for lib in $AUTODETECT_LIBS; do
3548     enabled $lib && request $lib
3549 done
3550
3551 # Enable platform codecs by default.
3552 enable_weak audiotoolbox
3553
3554 # Enable hwaccels by default.
3555 enable_weak d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3556 enable_weak xlib
3557
3558 enable_weak cuda cuvid nvenc vda_framework videotoolbox videotoolbox_encoder
3559
3560 disabled logging && logfile=/dev/null
3561
3562 die_license_disabled() {
3563     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3564 }
3565
3566 die_license_disabled_gpl() {
3567     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3568 }
3569
3570 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3571 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3572
3573 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3574 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3575
3576 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3577
3578 # Disable all the library-specific components if the library itself
3579 # is disabled, see AVCODEC_LIST and following _LIST variables.
3580
3581 disable_components(){
3582     disabled ${1} && disable $(
3583         eval components="\$$(toupper ${1})_COMPONENTS"
3584         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3585     )
3586 }
3587
3588 map 'disable_components $v' $LIBRARY_LIST
3589
3590 mkdir -p ffbuild
3591 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3592 set >> $logfile
3593
3594 test -n "$valgrind" && toolchain="valgrind-memcheck"
3595
3596 enabled ossfuzz && {
3597     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3598     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3599 }
3600
3601 case "$toolchain" in
3602     *-asan)
3603         cc_default="${toolchain%-asan}"
3604         add_cflags  -fsanitize=address
3605         add_ldflags -fsanitize=address
3606     ;;
3607     *-msan)
3608         cc_default="${toolchain%-msan}"
3609         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3610         add_ldflags -fsanitize=memory
3611     ;;
3612     *-tsan)
3613         cc_default="${toolchain%-tsan}"
3614         add_cflags  -fsanitize=thread -fPIE
3615         add_ldflags -fsanitize=thread -pie
3616         case "$toolchain" in
3617             gcc-tsan)
3618                 add_cflags  -fPIC
3619                 add_ldflags -fPIC
3620                 ;;
3621         esac
3622     ;;
3623     *-usan)
3624         cc_default="${toolchain%-usan}"
3625         add_cflags  -fsanitize=undefined
3626         add_ldflags -fsanitize=undefined
3627     ;;
3628     valgrind-*)
3629         target_exec_default="valgrind"
3630         case "$toolchain" in
3631             valgrind-massif)
3632                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3633                 ;;
3634             valgrind-memcheck)
3635                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3636                 ;;
3637         esac
3638     ;;
3639     msvc)
3640         # Check whether the current MSVC version needs the C99 converter.
3641         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3642         # support enough of C99 to build ffmpeg. Default to the new
3643         # behaviour if the regexp was unable to match anything, since this
3644         # successfully parses the version number of existing supported
3645         # versions that require the converter (MSVC 2010 and 2012).
3646         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3647         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3648             cc_default="cl"
3649             cxx_default="cl"
3650         else
3651             cc_default="c99wrap cl"
3652             cxx_default="c99wrap cl"
3653         fi
3654         ld_default="$source_path/compat/windows/mslink"
3655         nm_default="dumpbin -symbols"
3656         ar_default="lib"
3657         case "$arch" in
3658         arm*)
3659             as_default="armasm"
3660             ;;
3661         esac
3662         target_os_default="win32"
3663         # Use a relative path for TMPDIR. This makes sure all the
3664         # ffconf temp files are written with a relative path, avoiding
3665         # issues with msys/win32 path conversion for MSVC parameters
3666         # such as -Fo<file> or -out:<file>.
3667         TMPDIR=.
3668     ;;
3669     icl)
3670         cc_default="icl"
3671         ld_default="xilink"
3672         nm_default="dumpbin -symbols"
3673         ar_default="xilib"
3674         target_os_default="win32"
3675         TMPDIR=.
3676     ;;
3677     gcov)
3678         add_cflags  -fprofile-arcs -ftest-coverage
3679         add_ldflags -fprofile-arcs -ftest-coverage
3680     ;;
3681     llvm-cov)
3682         add_cflags -fprofile-arcs -ftest-coverage
3683         add_ldflags --coverage
3684     ;;
3685     hardened)
3686         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3687         add_cflags   -fno-strict-overflow -fstack-protector-all
3688         add_ldflags  -Wl,-z,relro -Wl,-z,now
3689         add_cflags   -fPIE
3690         add_ldexeflags -fPIE -pie
3691     ;;
3692     ?*)
3693         die "Unknown toolchain $toolchain"
3694     ;;
3695 esac
3696
3697 test -n "$cross_prefix" && enable cross_compile
3698
3699 if enabled cross_compile; then
3700     test -n "$arch" && test -n "$target_os" ||
3701         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3702 fi
3703
3704 ar_default="${cross_prefix}${ar_default}"
3705 cc_default="${cross_prefix}${cc_default}"
3706 cxx_default="${cross_prefix}${cxx_default}"
3707 nm_default="${cross_prefix}${nm_default}"
3708 pkg_config_default="${cross_prefix}${pkg_config_default}"
3709 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3710     ranlib_default="${cross_prefix}${ranlib_default} -D"
3711 else
3712     ranlib_default="${cross_prefix}${ranlib_default}"
3713 fi
3714 strip_default="${cross_prefix}${strip_default}"
3715 windres_default="${cross_prefix}${windres_default}"
3716
3717 sysinclude_default="${sysroot}/usr/include"
3718
3719 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3720     target_exec target_os yasmexe
3721 enabled cross_compile || host_cc_default=$cc
3722 set_default host_cc
3723
3724 pkg_config_fail_message=""
3725 if ! $pkg_config --version >/dev/null 2>&1; then
3726     warn "$pkg_config not found, library detection may fail."
3727     pkg_config=false
3728 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3729     pkg_config_fail_message="
3730 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3731 fi
3732
3733 if test $doxygen != $doxygen_default && \
3734   ! $doxygen --version >/dev/null 2>&1; then
3735     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3736 fi
3737
3738 exesuf() {
3739     case $1 in
3740         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3741     esac
3742 }
3743
3744 EXESUF=$(exesuf $target_os)
3745 HOSTEXESUF=$(exesuf $host_os)
3746
3747 # set temporary file name
3748 : ${TMPDIR:=$TEMPDIR}
3749 : ${TMPDIR:=$TMP}
3750 : ${TMPDIR:=/tmp}
3751
3752 if [ -n "$tempprefix" ] ; then
3753     mktemp(){
3754         echo $tempprefix.${HOSTNAME}.${UID}
3755     }
3756 elif ! check_cmd mktemp -u XXXXXX; then
3757     # simple replacement for missing mktemp
3758     # NOT SAFE FOR GENERAL USE
3759     mktemp(){
3760         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3761     }
3762 fi
3763
3764 tmpfile(){
3765     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3766         (set -C; exec > $tmp) 2>/dev/null ||
3767         die "Unable to create temporary file in $TMPDIR."
3768     append TMPFILES $tmp
3769     eval $1=$tmp
3770 }
3771
3772 trap 'rm -f -- $TMPFILES' EXIT
3773
3774 tmpfile TMPASM .asm
3775 tmpfile TMPC   .c
3776 tmpfile TMPCPP .cpp
3777 tmpfile TMPE   $EXESUF
3778 tmpfile TMPH   .h
3779 tmpfile TMPM   .m
3780 tmpfile TMPO   .o
3781 tmpfile TMPS   .S
3782 tmpfile TMPSH  .sh
3783 tmpfile TMPV   .ver
3784
3785 unset -f mktemp
3786
3787 chmod +x $TMPE
3788
3789 # make sure we can execute files in $TMPDIR
3790 cat > $TMPSH 2>> $logfile <<EOF
3791 #! /bin/sh
3792 EOF
3793 chmod +x $TMPSH >> $logfile 2>&1
3794 if ! $TMPSH >> $logfile 2>&1; then
3795     cat <<EOF
3796 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3797 variable to another directory and make sure that it is not mounted noexec.
3798 EOF
3799     die "Sanity test failed."
3800 fi
3801
3802 armasm_flags(){
3803     for flag; do
3804         case $flag in
3805             # Filter out MSVC cl.exe options from cflags that shouldn't
3806             # be passed to gas-preprocessor
3807             -M[TD]*)                                            ;;
3808             *)                  echo $flag                      ;;
3809         esac
3810    done
3811 }
3812
3813 ccc_flags(){
3814     for flag; do
3815         case $flag in
3816             -std=c99)           echo -c99                       ;;
3817             -mcpu=*)            echo -arch ${flag#*=}           ;;
3818             -mieee)             echo -ieee                      ;;
3819             -O*|-fast)          echo $flag                      ;;
3820             -fno-math-errno)    echo -assume nomath_errno       ;;
3821             -g)                 echo -g3                        ;;
3822             -Wall)              echo -msg_enable level2         ;;
3823             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3824             -Wl,*)              echo $flag                      ;;
3825             -f*|-W*)                                            ;;
3826             *)                  echo $flag                      ;;
3827         esac
3828    done
3829 }
3830
3831 cparser_flags(){
3832     for flag; do
3833         case $flag in
3834             -Wno-switch)             echo -Wno-switch-enum ;;
3835             -Wno-format-zero-length) ;;
3836             -Wdisabled-optimization) ;;
3837             -Wno-pointer-sign)       echo -Wno-other ;;
3838             *)                       echo $flag ;;
3839         esac
3840     done
3841 }
3842
3843 msvc_common_flags(){
3844     for flag; do
3845         case $flag in
3846             # In addition to specifying certain flags under the compiler
3847             # specific filters, they must be specified here as well or else the
3848             # generic catch all at the bottom will print the original flag.
3849             -Wall)                ;;
3850             -std=c99)             ;;
3851             # Common flags
3852             -fomit-frame-pointer) ;;
3853             -g)                   echo -Z7 ;;
3854             -fno-math-errno)      ;;
3855             -fno-common)          ;;
3856             -fno-signed-zeros)    ;;
3857             -fPIC)                ;;
3858             -mthumb)              ;;
3859             -march=*)             ;;
3860             -lz)                  echo zlib.lib ;;
3861             -lx264)               echo libx264.lib ;;
3862             -lstdc++)             ;;
3863             -l*)                  echo ${flag#-l}.lib ;;
3864             -LARGEADDRESSAWARE)   echo $flag ;;
3865             -L*)                  echo -libpath:${flag#-L} ;;
3866             *)                    echo $flag ;;
3867         esac
3868     done
3869 }
3870
3871 msvc_flags(){
3872     msvc_common_flags "$@"
3873     for flag; do
3874         case $flag in
3875             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3876                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3877                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3878                                        -wd4307 \
3879                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3880         esac
3881     done
3882 }
3883
3884 icl_flags(){
3885     msvc_common_flags "$@"
3886     for flag; do
3887         case $flag in
3888             # Despite what Intel's documentation says -Wall, which is supported
3889             # on Windows, does enable remarks so disable them here.
3890             -Wall)                echo $flag -Qdiag-disable:remark ;;
3891             -std=c99)             echo -Qstd=c99 ;;
3892             -flto)                echo -ipo ;;
3893         esac
3894     done
3895 }
3896
3897 icc_flags(){
3898     for flag; do
3899         case $flag in
3900             -flto)                echo -ipo ;;
3901             *)                    echo $flag ;;
3902         esac
3903     done
3904 }
3905
3906 pgi_flags(){
3907     for flag; do
3908         case $flag in
3909             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3910             -fomit-frame-pointer) echo -Mnoframe ;;
3911             -g)                   echo -gopt ;;
3912             *)                    echo $flag ;;
3913         esac
3914     done
3915 }
3916
3917 suncc_flags(){
3918     for flag; do
3919         case $flag in
3920             -march=*|-mcpu=*)
3921                 case "${flag#*=}" in
3922                     native)                   echo -xtarget=native       ;;
3923                     v9|niagara)               echo -xarch=sparc          ;;
3924                     ultrasparc)               echo -xarch=sparcvis       ;;
3925                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3926                     i586|pentium)             echo -xchip=pentium        ;;
3927                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3928                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3929                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3930                     pentium4*)          echo -xtarget=pentium4           ;;
3931                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3932                     *-sse3)             echo -xarch=sse3                 ;;
3933                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3934                     bonnell)                   echo -xarch=ssse3         ;;
3935                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3936                     westmere)                  echo -xtarget=westmere    ;;
3937                     silvermont)                echo -xarch=sse4_2        ;;
3938                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3939                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3940                                                echo -xarch=avx           ;;
3941                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3942                     btver1)                    echo -xarch=amdsse4a      ;;
3943                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3944                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3945                     k8|opteron|athlon64|athlon-fx)
3946                                                echo -xarch=sse2a         ;;
3947                     athlon*)                   echo -xarch=pentium_proa  ;;
3948                 esac
3949                 ;;
3950             -std=c99)             echo -xc99              ;;
3951             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3952             -fPIC)                echo -KPIC -xcode=pic32 ;;
3953             -W*,*)                echo $flag              ;;
3954             -f*-*|-W*|-mimpure-text)                      ;;
3955             -shared)              echo -G                 ;;
3956             *)                    echo $flag              ;;
3957         esac
3958     done
3959 }
3960
3961 tms470_flags(){
3962     for flag; do
3963         case $flag in
3964             -march=*|-mcpu=*)
3965                 case "${flag#*=}" in
3966                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3967                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3968                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3969                     armv6*|arm11*)          echo -mv=6   ;;
3970                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3971                                             echo -mv=5e  ;;
3972                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3973                 esac
3974                 ;;
3975             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3976             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3977             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3978             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3979             -msoft-float)   echo --float_support=vfplib       ;;
3980             -O[0-3]|-mf=*)  echo $flag                        ;;
3981             -g)             echo -g -mn                       ;;
3982             -pds=*)         echo $flag                        ;;
3983             -D*|-I*)        echo $flag                        ;;
3984             --gcc|--abi=*)  echo $flag                        ;;
3985             -me)            echo $flag                        ;;
3986         esac
3987     done
3988 }
3989
3990 probe_cc(){
3991     pfx=$1
3992     _cc=$2
3993     first=$3
3994
3995     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3996     unset _ld_o _ldflags _ld_lib _ld_path
3997     unset _depflags _DEPCMD _DEPFLAGS
3998     _flags_filter=echo
3999
4000     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4001         true # no-op to avoid reading stdin in following checks
4002     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4003         _type=llvm_gcc
4004         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4005         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4006         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4007         _cflags_speed='-O3'
4008         _cflags_size='-Os'
4009     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4010         _type=gcc
4011         gcc_version=$($_cc --version | head -n1)
4012         gcc_basever=$($_cc -dumpversion)
4013         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4014         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4015         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4016         case $gcc_basever in
4017             2) ;;
4018             2.*) ;;
4019             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4020         esac
4021         if [ "$first" = true ]; then
4022             case $gcc_basever in
4023                 4.2*)
4024                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4025             esac
4026         fi
4027         _cflags_speed='-O3'
4028         _cflags_size='-Os'
4029     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4030         _type=icc
4031         _ident=$($_cc --version | head -n1)
4032         _depflags='-MMD'
4033         _cflags_speed='-O3'
4034         _cflags_size='-Os'
4035         _cflags_noopt='-O1'
4036         _flags_filter=icc_flags
4037     elif $_cc -v 2>&1 | grep -q xlc; then
4038         _type=xlc
4039         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4040         _cflags_speed='-O5'
4041         _cflags_size='-O5 -qcompact'
4042     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4043         _type=ccc
4044         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4045         _DEPFLAGS='-M'
4046         _cflags_speed='-fast'
4047         _cflags_size='-O1'
4048         _flags_filter=ccc_flags
4049     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4050         test -d "$sysroot" || die "No valid sysroot specified."
4051         _type=armcc
4052         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4053         armcc_conf="$PWD/armcc.conf"
4054         $_cc --arm_linux_configure                 \
4055              --arm_linux_config_file="$armcc_conf" \
4056              --configure_sysroot="$sysroot"        \
4057              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4058              die "Error creating armcc configuration file."
4059         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4060         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4061         as_default="${cross_prefix}gcc"
4062         _depflags='-MMD'
4063         _cflags_speed='-O3'
4064         _cflags_size='-Os'
4065     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4066         _type=tms470
4067         _ident=$($_cc -version | head -n1 | tr -s ' ')
4068         _flags='--gcc --abi=eabi -me'
4069         _cc_e='-ppl -fe=$@'
4070         _cc_o='-fe=$@'
4071         _depflags='-ppa -ppd=$(@:.o=.d)'
4072         _cflags_speed='-O3 -mf=5'
4073         _cflags_size='-O3 -mf=2'
4074         _flags_filter=tms470_flags
4075     elif $_cc -v 2>&1 | grep -q clang; then
4076         _type=clang
4077         _ident=$($_cc --version 2>/dev/null | head -n1)
4078         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4079         _cflags_speed='-O3'
4080         _cflags_size='-Oz'
4081     elif $_cc -V 2>&1 | grep -q Sun; then
4082         _type=suncc
4083         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4084         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4085         _DEPFLAGS='-xM1 -xc99'
4086         _ldflags='-std=c99'
4087         _cflags_speed='-O5'
4088         _cflags_size='-O5 -xspace'
4089         _flags_filter=suncc_flags
4090     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4091         _type=pathscale
4092         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4093         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4094         _cflags_speed='-O2'
4095         _cflags_size='-Os'
4096         _flags_filter='filter_out -Wdisabled-optimization'
4097     elif $_cc -v 2>&1 | grep -q Open64; then
4098         _type=open64
4099         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4100         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4101         _cflags_speed='-O2'
4102         _cflags_size='-Os'
4103         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4104     elif $_cc -V 2>&1 | grep -q Portland; then
4105         _type=pgi
4106         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4107         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4108         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4109         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4110         _cflags_noopt="-O"
4111         _flags_filter=pgi_flags
4112     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4113         _type=armasm
4114         _ident=$($_cc | head -n1)
4115         # 4509: "This form of conditional instruction is deprecated"
4116         _flags="-nologo -ignore 4509"
4117         _flags_filter=armasm_flags
4118     elif $_cc 2>&1 | grep -q Intel; then
4119         _type=icl
4120         _ident=$($_cc 2>&1 | head -n1)
4121         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4122         # Not only is O3 broken on 13.x+ but it is slower on all previous
4123         # versions (tested) as well.
4124         _cflags_speed="-O2"
4125         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4126         if $_cc 2>&1 | grep -q Linker; then
4127             _ld_o='-out:$@'
4128         else
4129             _ld_o='-Fe$@'
4130         fi
4131         _cc_o='-Fo$@'
4132         _cc_e='-P'
4133         _flags_filter=icl_flags
4134         _ld_lib='lib%.a'
4135         _ld_path='-libpath:'
4136         # -Qdiag-error to make icl error when seeing certain unknown arguments
4137         _flags='-nologo -Qdiag-error:4044,10157'
4138         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4139         # with MSVC which enables it by default.
4140         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4141         disable stripping
4142     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4143         # lld can emulate multiple different linkers; in ms link.exe mode,
4144         # the -? parameter gives the help output which contains an identifyable
4145         # string, while it gives an error in other modes.
4146         _type=lld-link
4147         # The link.exe mode doesn't have a switch for getting the version,
4148         # but we can force it back to gnu mode and get the version from there.
4149         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4150         _ld_o='-out:$@'
4151         _flags_filter=msvc_flags
4152         _ld_lib='lib%.a'
4153         _ld_path='-libpath:'
4154     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4155         _type=msvc
4156         _ident=$($_cc 2>&1 | head -n1)
4157         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4158         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4159         _cflags_speed="-O2"
4160         _cflags_size="-O1"
4161         _cflags_noopt="-O1"
4162         if $_cc -nologo- 2>&1 | grep -q Linker; then
4163             _ld_o='-out:$@'
4164         else
4165             _ld_o='-Fe$@'
4166         fi
4167         _cc_o='-Fo$@'
4168         _cc_e='-P -Fi$@'
4169         _flags_filter=msvc_flags
4170         _ld_lib='lib%.a'
4171         _ld_path='-libpath:'
4172         _flags='-nologo'
4173         disable stripping
4174     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4175         _type=cparser
4176         _ident=$($_cc --version | head -n1)
4177         _depflags='-MMD'
4178         _cflags_speed='-O4'
4179         _cflags_size='-O2'
4180         _flags_filter=cparser_flags
4181     fi
4182
4183     eval ${pfx}_type=\$_type
4184     eval ${pfx}_ident=\$_ident
4185 }
4186
4187 set_ccvars(){
4188     eval ${1}_C=\${_cc_c-\${${1}_C}}
4189     eval ${1}_E=\${_cc_e-\${${1}_E}}
4190     eval ${1}_O=\${_cc_o-\${${1}_O}}
4191
4192     if [ -n "$_depflags" ]; then
4193         eval ${1}_DEPFLAGS=\$_depflags
4194     else
4195         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4196         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4197         eval DEP${1}FLAGS=\$_flags
4198     fi
4199 }
4200
4201 probe_cc cc "$cc" "true"
4202 cflags_filter=$_flags_filter
4203 cflags_speed=$_cflags_speed
4204 cflags_size=$_cflags_size
4205 cflags_noopt=$_cflags_noopt
4206 add_cflags $_flags $_cflags
4207 cc_ldflags=$_ldflags
4208 set_ccvars CC
4209 set_ccvars CXX
4210
4211 probe_cc hostcc "$host_cc"
4212 host_cflags_filter=$_flags_filter
4213 add_host_cflags  $_flags $_cflags
4214 set_ccvars HOSTCC
4215
4216 test -n "$cc_type" && enable $cc_type ||
4217     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4218
4219 : ${as_default:=$cc}
4220 : ${objcc_default:=$cc}
4221 : ${dep_cc_default:=$cc}
4222 : ${ld_default:=$cc}
4223 : ${host_ld_default:=$host_cc}
4224 set_default ar as objcc dep_cc ld ln_s host_ld windres
4225
4226 probe_cc as "$as"
4227 asflags_filter=$_flags_filter
4228 add_asflags $_flags $_cflags
4229 set_ccvars AS
4230
4231 probe_cc objcc "$objcc"
4232 objcflags_filter=$_flags_filter
4233 add_objcflags $_flags $_cflags
4234 set_ccvars OBJC
4235
4236 probe_cc ld "$ld"
4237 ldflags_filter=$_flags_filter
4238 add_ldflags $_flags $_ldflags
4239 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4240 LD_O=${_ld_o-$LD_O}
4241 LD_LIB=${_ld_lib-$LD_LIB}
4242 LD_PATH=${_ld_path-$LD_PATH}
4243
4244 probe_cc hostld "$host_ld"
4245 host_ldflags_filter=$_flags_filter
4246 add_host_ldflags $_flags $_ldflags
4247 HOSTLD_O=${_ld_o-$HOSTLD_O}
4248
4249 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4250     probe_cc depcc "$dep_cc"
4251     CCDEP=${_DEPCMD:-$DEPCMD}
4252     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4253     DEPCCFLAGS=$_flags
4254 fi
4255
4256 if $ar 2>&1 | grep -q Microsoft; then
4257     arflags="-nologo"
4258     ar_o='-out:$@'
4259 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4260     arflags="rq"
4261     ar_o='$@'
4262 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4263     arflags='-Xany -r -c'
4264     ar_o='$@'
4265 elif $ar 2>&1 | grep -q "\[D\] "; then
4266     arflags="rcD"
4267     ar_o='$@'
4268 else
4269     arflags="rc"
4270     ar_o='$@'
4271 fi
4272
4273 add_cflags $extra_cflags
4274 add_cxxflags $extra_cxxflags
4275 add_objcflags $extra_objcflags
4276 add_asflags $extra_cflags
4277
4278 if test -n "$sysroot"; then
4279     case "$cc_type" in
4280         gcc|llvm_gcc|clang)
4281             add_cppflags --sysroot="$sysroot"
4282             add_ldflags --sysroot="$sysroot"
4283 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4284             add_cppflags -isysroot "$sysroot"
4285             add_ldflags -isysroot "$sysroot"
4286         ;;
4287         tms470)
4288             add_cppflags -I"$sysinclude"
4289             add_ldflags  --sysroot="$sysroot"
4290         ;;
4291     esac
4292 fi
4293
4294 if test "$cpu" = host; then
4295     enabled cross_compile &&
4296         die "--cpu=host makes no sense when cross-compiling."
4297
4298     case "$cc_type" in
4299         gcc|llvm_gcc)
4300             check_native(){
4301                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4302                 sed -n "/cc1.*$1=/{
4303                             s/.*$1=\\([^ ]*\\).*/\\1/
4304                             p
4305                             q
4306                         }" $TMPE
4307             }
4308             cpu=$(check_native -march || check_native -mcpu)
4309         ;;
4310         clang)
4311             check_native(){
4312                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4313                 sed -n "/cc1.*-target-cpu /{
4314                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4315                             p
4316                             q
4317                         }" $TMPE
4318             }
4319             cpu=$(check_native -march)
4320         ;;
4321     esac
4322
4323     test "${cpu:-host}" = host &&
4324         die "--cpu=host not supported with compiler $cc"
4325 fi
4326
4327 # Deal with common $arch aliases
4328 case "$arch" in
4329     aarch64|arm64)
4330         arch="aarch64"
4331     ;;
4332     arm*|iPad*|iPhone*)
4333         arch="arm"
4334     ;;
4335     mips*|IP*)
4336         case "$arch" in
4337         *el)
4338             add_cppflags -EL
4339             add_ldflags -EL
4340         ;;
4341         *eb)
4342             add_cppflags -EB
4343             add_ldflags -EB
4344         ;;
4345         esac
4346         arch="mips"
4347     ;;
4348     parisc*|hppa*)
4349         arch="parisc"
4350     ;;
4351     "Power Macintosh"|ppc*|powerpc*)
4352         arch="ppc"
4353     ;;
4354     s390|s390x)
4355         arch="s390"
4356     ;;
4357     sh4|sh)
4358         arch="sh4"
4359     ;;
4360     sun4*|sparc*)
4361         arch="sparc"
4362     ;;
4363     tilegx|tile-gx)
4364         arch="tilegx"
4365     ;;
4366     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4367         arch="x86"
4368     ;;
4369 esac
4370
4371 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4372 enable $arch
4373
4374 # Add processor-specific flags
4375 if enabled aarch64; then
4376
4377     case $cpu in
4378         armv*)
4379             cpuflags="-march=$cpu"
4380         ;;
4381         *)
4382             cpuflags="-mcpu=$cpu"
4383         ;;
4384     esac
4385
4386 elif enabled alpha; then
4387
4388     cpuflags="-mcpu=$cpu"
4389
4390 elif enabled arm; then
4391
4392     check_arm_arch() {
4393         check_cpp_condition stddef.h \
4394             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4395             $cpuflags
4396     }
4397
4398     probe_arm_arch() {
4399         if   check_arm_arch 4;        then echo armv4
4400         elif check_arm_arch 4T;       then echo armv4t
4401         elif check_arm_arch 5;        then echo armv5
4402         elif check_arm_arch 5E;       then echo armv5e
4403         elif check_arm_arch 5T;       then echo armv5t
4404         elif check_arm_arch 5TE;      then echo armv5te
4405         elif check_arm_arch 5TEJ;     then echo armv5te
4406         elif check_arm_arch 6;        then echo armv6
4407         elif check_arm_arch 6J;       then echo armv6j
4408         elif check_arm_arch 6K;       then echo armv6k
4409         elif check_arm_arch 6Z;       then echo armv6z
4410         elif check_arm_arch 6ZK;      then echo armv6zk
4411         elif check_arm_arch 6T2;      then echo armv6t2
4412         elif check_arm_arch 7;        then echo armv7
4413         elif check_arm_arch 7A  7_A;  then echo armv7-a
4414         elif check_arm_arch 7S;       then echo armv7-a
4415         elif check_arm_arch 7R  7_R;  then echo armv7-r
4416         elif check_arm_arch 7M  7_M;  then echo armv7-m
4417         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4418         elif check_arm_arch 8A  8_A;  then echo armv8-a
4419         fi
4420     }
4421
4422     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4423
4424     case $cpu in
4425         armv*)
4426             cpuflags="-march=$cpu"
4427             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4428         ;;
4429         *)
4430             cpuflags="-mcpu=$cpu"
4431             case $cpu in
4432                 cortex-a*)                               subarch=armv7a  ;;
4433                 cortex-r*)                               subarch=armv7r  ;;
4434                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4435                 arm11*)                                  subarch=armv6   ;;
4436                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4437                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4438                 *)                             subarch=$(probe_arm_arch) ;;
4439             esac
4440         ;;
4441     esac
4442
4443     case "$subarch" in
4444         armv5t*)    enable fast_clz                ;;
4445         armv[6-8]*)
4446             enable fast_clz
4447             disabled fast_unaligned || enable fast_unaligned
4448             ;;
4449     esac
4450
4451 elif enabled avr32; then
4452
4453     case $cpu in
4454         ap7[02]0[0-2])
4455             subarch="avr32_ap"
4456             cpuflags="-mpart=$cpu"
4457         ;;
4458         ap)
4459             subarch="avr32_ap"
4460             cpuflags="-march=$cpu"
4461         ;;
4462         uc3[ab]*)
4463             subarch="avr32_uc"
4464             cpuflags="-mcpu=$cpu"
4465         ;;
4466         uc)
4467             subarch="avr32_uc"
4468             cpuflags="-march=$cpu"
4469         ;;
4470     esac
4471
4472 elif enabled bfin; then
4473
4474     cpuflags="-mcpu=$cpu"
4475
4476 elif enabled mips; then
4477
4478     cpuflags="-march=$cpu"
4479
4480     if [ "$cpu" != "generic" ]; then
4481         disable mips32r2
4482         disable mips32r5
4483         disable mips64r2
4484         disable mips32r6
4485         disable mips64r6
4486         disable loongson2
4487         disable loongson3
4488
4489         case $cpu in
4490             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4491                 enable mips32r2
4492                 disable msa
4493             ;;
4494             p5600|i6400|p6600)
4495                 disable mipsdsp
4496                 disable mipsdspr2
4497             ;;
4498             loongson*)
4499                 enable loongson2
4500                 enable loongson3
4501                 enable local_aligned_8 local_aligned_16 local_aligned_32
4502                 enable simd_align_16
4503                 enable fast_64bit
4504                 enable fast_clz
4505                 enable fast_cmov
4506                 enable fast_unaligned
4507                 disable aligned_stack
4508                 disable mipsfpu
4509                 disable mipsdsp
4510                 disable mipsdspr2
4511                 case $cpu in
4512                     loongson3*)
4513                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4514                     ;;
4515                     loongson2e)
4516                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4517                     ;;
4518                     loongson2f)
4519                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4520                     ;;
4521                 esac
4522             ;;
4523             *)
4524                 # Unknown CPU. Disable everything.
4525                 warn "unknown CPU. Disabling all MIPS optimizations."
4526                 disable mipsfpu
4527                 disable mipsdsp
4528                 disable mipsdspr2
4529                 disable msa
4530                 disable mmi
4531             ;;
4532         esac
4533
4534         case $cpu in
4535             24kc)
4536                 disable mipsfpu
4537                 disable mipsdsp
4538                 disable mipsdspr2
4539             ;;
4540             24kf*)
4541                 disable mipsdsp
4542                 disable mipsdspr2
4543             ;;
4544             24kec|34kc|1004kc)
4545                 disable mipsfpu
4546                 disable mipsdspr2
4547             ;;
4548             24kef*|34kf*|1004kf*)
4549                 disable mipsdspr2
4550             ;;
4551             74kc)
4552                 disable mipsfpu
4553             ;;
4554             p5600)
4555                 enable mips32r5
4556                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4557             ;;
4558             i6400)
4559                 enable mips64r6
4560                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4561             ;;
4562             p6600)
4563                 enable mips64r6
4564                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4565             ;;
4566         esac
4567     else
4568         # We do not disable anything. Is up to the user to disable the unwanted features.
4569         warn 'generic cpu selected'
4570     fi
4571
4572 elif enabled ppc; then
4573
4574     disable ldbrx
4575
4576     case $(tolower $cpu) in
4577         601|ppc601|powerpc601)
4578             cpuflags="-mcpu=601"
4579             disable altivec
4580         ;;
4581         603*|ppc603*|powerpc603*)
4582             cpuflags="-mcpu=603"
4583             disable altivec
4584         ;;
4585         604*|ppc604*|powerpc604*)
4586             cpuflags="-mcpu=604"
4587             disable altivec
4588         ;;
4589         g3|75*|ppc75*|powerpc75*)
4590             cpuflags="-mcpu=750"
4591             disable altivec
4592         ;;
4593         g4|745*|ppc745*|powerpc745*)
4594             cpuflags="-mcpu=7450"
4595             disable vsx
4596         ;;
4597         74*|ppc74*|powerpc74*)
4598             cpuflags="-mcpu=7400"
4599             disable vsx
4600         ;;
4601         g5|970|ppc970|powerpc970)
4602             cpuflags="-mcpu=970"
4603             disable vsx
4604         ;;
4605         power[3-6]*)
4606             cpuflags="-mcpu=$cpu"
4607             disable vsx
4608         ;;
4609         power[7-8]*)
4610             cpuflags="-mcpu=$cpu"
4611         ;;
4612         cell)
4613             cpuflags="-mcpu=cell"
4614             enable ldbrx
4615             disable vsx
4616         ;;
4617         e500mc)
4618             cpuflags="-mcpu=e500mc"
4619             disable altivec
4620         ;;
4621         e500v2)
4622             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4623             disable altivec
4624             disable dcbzl
4625         ;;
4626         e500)
4627             cpuflags="-mcpu=8540 -mhard-float"
4628             disable altivec
4629             disable dcbzl
4630         ;;
4631     esac
4632
4633 elif enabled sparc; then
4634
4635     case $cpu in
4636         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4637             cpuflags="-mcpu=$cpu"
4638         ;;
4639         ultrasparc*|niagara[234])
4640             cpuflags="-mcpu=$cpu"
4641         ;;
4642     esac
4643
4644 elif enabled x86; then
4645
4646     case $cpu in
4647         i[345]86|pentium)
4648             cpuflags="-march=$cpu"
4649             disable i686
4650             disable mmx
4651         ;;
4652         # targets that do NOT support nopl and conditional mov (cmov)
4653         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4654             cpuflags="-march=$cpu"
4655             disable i686
4656         ;;
4657         # targets that do support nopl and conditional mov (cmov)
4658         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4659         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4660         |amdfam10|barcelona|b[dt]ver*|znver*)
4661             cpuflags="-march=$cpu"
4662             enable i686
4663             enable fast_cmov
4664         ;;
4665         # targets that do support conditional mov but on which it's slow
4666         pentium4|pentium4m|prescott|nocona)
4667             cpuflags="-march=$cpu"
4668             enable i686
4669             disable fast_cmov
4670         ;;
4671     esac
4672
4673 fi
4674
4675 if [ "$cpu" != generic ]; then
4676     add_cflags  $cpuflags
4677     add_asflags $cpuflags
4678     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4679 fi
4680
4681 # compiler sanity check
4682 check_exec <<EOF
4683 int main(void){ return 0; }
4684 EOF
4685 if test "$?" != 0; then
4686     echo "$cc is unable to create an executable file."
4687     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4688         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4689         echo "Only do this if you know what cross compiling means."
4690     fi
4691     die "C compiler test failed."
4692 fi
4693
4694 add_cppflags -D_ISOC99_SOURCE
4695 add_cxxflags -D__STDC_CONSTANT_MACROS
4696 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4697
4698 # some compilers silently accept -std=c11, so we also need to check that the
4699 # version macro is defined properly
4700 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4701     add_cflags -std=c11
4702 else
4703     check_cflags -std=c99
4704 fi
4705
4706 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4707 #include <stdlib.h>
4708 EOF
4709 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4710 #include <stdlib.h>
4711 EOF
4712
4713 add_host_cppflags -D_ISOC99_SOURCE
4714 check_host_cflags -std=c99
4715 check_host_cflags -Wall
4716 check_host_cflags -O3
4717
4718 check_64bit(){
4719     arch32=$1
4720     arch64=$2
4721     expr=$3
4722     check_code cc "" "int test[2*($expr) - 1]" &&
4723         subarch=$arch64 || subarch=$arch32
4724 }
4725
4726 case "$arch" in
4727     aarch64|alpha|ia64)
4728         spic=$shared
4729     ;;
4730     mips)
4731         check_64bit mips mips64 '_MIPS_SIM > 1'
4732         spic=$shared
4733     ;;
4734     parisc)
4735         check_64bit parisc parisc64 'sizeof(void *) > 4'
4736         spic=$shared
4737     ;;
4738     ppc)
4739         check_64bit ppc ppc64 'sizeof(void *) > 4'
4740         spic=$shared
4741     ;;
4742     s390)
4743         check_64bit s390 s390x 'sizeof(void *) > 4'
4744         spic=$shared
4745     ;;
4746     sparc)
4747         check_64bit sparc sparc64 'sizeof(void *) > 4'
4748         spic=$shared
4749     ;;
4750     x86)
4751         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4752         # Treat x32 as x64 for now. Note it also needs spic=$shared
4753         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4754             subarch=x86_64
4755         if test "$subarch" = "x86_64"; then
4756             spic=$shared
4757         fi
4758     ;;
4759     ppc)
4760         check_cc <<EOF && subarch="ppc64"
4761         int test[(int)sizeof(char*) - 7];
4762 EOF
4763     ;;
4764 esac
4765
4766 enable $subarch
4767 enabled spic && enable_weak pic
4768
4769 # OS specific
4770 case $target_os in
4771     aix)
4772         SHFLAGS=-shared
4773         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4774         enabled shared && add_ldflags -Wl,-brtl
4775         ;;
4776     android)
4777         disable symver
4778         enable section_data_rel_ro
4779         SLIB_INSTALL_NAME='$(SLIBNAME)'
4780         SLIB_INSTALL_LINKS=
4781         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4782         ;;
4783     haiku)
4784         prefix_default="/boot/common"
4785         network_extralibs="-lnetwork"
4786         host_extralibs=
4787         ;;
4788     sunos)
4789         SHFLAGS='-shared -Wl,-h,$$(@F)'
4790         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4791         network_extralibs="-lsocket -lnsl"
4792         add_cppflags -D__EXTENSIONS__
4793         # When using suncc to build, the Solaris linker will mark
4794         # an executable with each instruction set encountered by
4795         # the Solaris assembler.  As our libraries contain their own
4796         # guards for processor-specific code, instead suppress
4797         # generation of the HWCAPS ELF section on Solaris x86 only.
4798         enabled_all suncc x86 &&
4799             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4800             add_ldflags -Wl,-M,mapfile
4801         nm_default='nm -P -g'
4802         version_script='-M'
4803         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4804         ;;
4805     netbsd)
4806         disable symver
4807         oss_indev_extralibs="-lossaudio"
4808         oss_outdev_extralibs="-lossaudio"
4809         enabled gcc || check_ldflags -Wl,-zmuldefs
4810         ;;
4811     openbsd|bitrig)
4812         disable symver
4813         SHFLAGS='-shared'
4814         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4815         SLIB_INSTALL_LINKS=
4816         oss_indev_extralibs="-lossaudio"
4817         oss_outdev_extralibs="-lossaudio"
4818         ;;
4819     dragonfly)
4820         disable symver
4821         ;;
4822     freebsd)
4823         ;;
4824     bsd/os)
4825         add_extralibs -lpoll -lgnugetopt
4826         strip="strip -d"
4827         ;;
4828     darwin)
4829         enabled ppc && add_asflags -force_cpusubtype_ALL
4830         install_name_dir_default='$(SHLIBDIR)'
4831         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4832         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4833         strip="${strip} -x"
4834         add_ldflags -Wl,-dynamic,-search_paths_first
4835         SLIBSUF=".dylib"
4836         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4837         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4838         objformat="macho"
4839         enabled x86_64 && objformat="macho64"
4840         enabled_any pic shared x86_64 ||
4841             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4842         check_header dispatch/dispatch.h &&
4843             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4844         version_script='-exported_symbols_list'
4845         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4846         ;;
4847     msys*)
4848         die "Native MSYS builds are discouraged, please use the MINGW environment."
4849         ;;
4850     mingw32*|mingw64*)
4851         if test $target_os = "mingw32ce"; then
4852             disable network
4853         else
4854             target_os=mingw32
4855         fi
4856         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4857         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4858         LIBTARGET=i386
4859         if enabled x86_64; then
4860             LIBTARGET="i386:x86-64"
4861         elif enabled arm; then
4862             LIBTARGET=arm-wince
4863         fi
4864         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4865         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4866         shlibdir_default="$bindir_default"
4867         SLIBPREF=""
4868         SLIBSUF=".dll"
4869         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4870         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4871         dlltool="${cross_prefix}dlltool"
4872         if check_cmd lib.exe -list; then
4873             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4874             if enabled x86_64; then
4875                 LIBTARGET=x64
4876             fi
4877         elif check_cmd $dlltool --version; then
4878             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4879         fi
4880         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4881         SLIB_INSTALL_LINKS=
4882         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4883         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4884         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4885         objformat="win32"
4886         ranlib=:
4887         enable dos_paths
4888         check_ldflags -Wl,--nxcompat,--dynamicbase
4889         # Lets work around some stupidity in binutils.
4890         # ld will strip relocations from executables even though we need them
4891         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4892         # however ld then forgets what the entry point should be (oops) so we
4893         # have to manually (re)set it.
4894         if enabled x86_32; then
4895             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4896         elif enabled x86_64; then
4897             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4898             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4899             # Set image base >4GB for extra entropy with HEASLR
4900             add_ldexeflags -Wl,--image-base,0x140000000
4901             append SHFLAGS -Wl,--image-base,0x180000000
4902         fi
4903         ;;
4904     win32|win64)
4905         disable symver
4906         if enabled shared; then
4907             # Link to the import library instead of the normal static library
4908             # for shared libs.
4909             LD_LIB='%.lib'
4910             # Cannot build both shared and static libs with MSVC or icl.
4911             disable static
4912         fi
4913         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4914         shlibdir_default="$bindir_default"
4915         SLIBPREF=""
4916         SLIBSUF=".dll"
4917         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4918         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4919         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4920         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4921         SLIB_INSTALL_LINKS=
4922         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4923         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4924         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4925         objformat="win32"
4926         ranlib=:
4927         enable dos_paths
4928         ;;
4929     cygwin*)
4930         target_os=cygwin
4931         shlibdir_default="$bindir_default"
4932         SLIBPREF="cyg"
4933         SLIBSUF=".dll"
4934         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4935         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4936         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4937         SLIB_INSTALL_LINKS=
4938         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4939         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4940         objformat="win32"
4941         enable dos_paths
4942         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4943         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4944         ;;
4945     *-dos|freedos|opendos)
4946         network_extralibs="-lsocket"
4947         objformat="coff"
4948         enable dos_paths
4949         add_cppflags -U__STRICT_ANSI__
4950         ;;
4951     linux)
4952         enable dv1394
4953         enable section_data_rel_ro
4954         ;;
4955     irix*)
4956         target_os=irix
4957         ranlib="echo ignoring ranlib"
4958         ;;
4959     os/2*)
4960         strip="lxlite -CS"
4961         objformat="aout"
4962         add_cppflags -D_GNU_SOURCE
4963         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4964         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4965         LIBSUF="_s.a"
4966         SLIBPREF=""
4967         SLIBSUF=".dll"
4968         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4969         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4970         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4971             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4972             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4973             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4974             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4975         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4976             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4977         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4978         SLIB_INSTALL_LINKS=
4979         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4980         enable dos_paths
4981         enable_weak os2threads
4982         ;;
4983     gnu/kfreebsd)
4984         add_cppflags -D_BSD_SOURCE
4985         ;;
4986     gnu)
4987         ;;
4988     qnx)
4989         add_cppflags -D_QNX_SOURCE
4990         network_extralibs="-lsocket"
4991         ;;
4992     symbian)
4993         SLIBSUF=".dll"
4994         enable dos_paths
4995         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4996         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4997         add_ldflags -Wl,--target1-abs,--no-undefined \
4998                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4999                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5000         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5001                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5002                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5003         ;;
5004     osf1)
5005         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
5006         ;;
5007     minix)
5008         ;;
5009     none)
5010         ;;
5011     *)
5012         die "Unknown OS '$target_os'."
5013         ;;
5014 esac
5015
5016 # test if creating links works
5017 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5018 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5019 mkdir "$link_dest"
5020 $ln_s "$link_dest" "$link_name"
5021 touch "$link_dest/test_file"
5022 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5023     # create link to source path
5024     [ -e src ] && rm src
5025     $ln_s "$source_path" src
5026     source_link=src
5027 else
5028     # creating directory links doesn't work
5029     # fall back to using the full source path
5030     source_link="$source_path"
5031 fi
5032 # cleanup
5033 rm -r "$link_dest"
5034 rm -r "$link_name"
5035
5036 # determine libc flavour
5037
5038 probe_libc(){
5039     pfx=$1
5040     pfx_no_=${pfx%_}
5041     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5042     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5043         eval ${pfx}libc_type=uclibc
5044         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5045     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5046         eval ${pfx}libc_type=glibc
5047         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5048     # MinGW headers can be installed on Cygwin, so check for newlib first.
5049     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5050         eval ${pfx}libc_type=newlib
5051         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5052     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5053     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5054         eval ${pfx}libc_type=mingw64
5055         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5056             add_compat msvcrt/snprintf.o
5057             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5058         fi
5059         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5060         eval test \$${pfx_no_}cc_type = "gcc" &&
5061             add_${pfx}cppflags -D__printf__=__gnu_printf__
5062     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5063          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5064         eval ${pfx}libc_type=mingw32
5065         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5066             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5067             die "ERROR: MinGW32 runtime version must be >= 3.15."
5068         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5069         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5070             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5071         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
5072             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5073         eval test \$${pfx_no_}cc_type = "gcc" &&
5074             add_${pfx}cppflags -D__printf__=__gnu_printf__
5075     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5076         eval ${pfx}libc_type=msvcrt
5077         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5078             if [ "$pfx" = host_ ]; then
5079                 add_host_cppflags -Dsnprintf=_snprintf
5080             else
5081                 add_compat strtod.o strtod=avpriv_strtod
5082                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5083                                              _snprintf=avpriv_snprintf  \
5084                                              vsnprintf=avpriv_vsnprintf
5085             fi
5086         fi
5087         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5088         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5089         # 0x601 by default unless something else is set by the user.
5090         # This can easily lead to us detecting functions only present
5091         # in such new versions and producing binaries requiring windows 7.0.
5092         # Therefore explicitly set the default to XP unless the user has
5093         # set something else on the command line.
5094         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5095         # family. For these cases, configure is free to use any functions
5096         # found in the SDK headers by default. (Alternatively, we could force
5097         # _WIN32_WINNT to 0x0602 in that case.)
5098         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5099             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5100 #ifdef WINAPI_FAMILY
5101 #include <winapifamily.h>
5102 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5103 #error not desktop
5104 #endif
5105 #endif
5106 EOF
5107         if [ "$pfx" = "" ]; then
5108             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5109             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5110         fi
5111     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5112         eval ${pfx}libc_type=klibc
5113     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5114         eval ${pfx}libc_type=bionic
5115     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5116         eval ${pfx}libc_type=solaris
5117         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5118     fi
5119     check_${pfx}cc <<EOF
5120 #include <time.h>
5121 void *v = localtime_r;
5122 EOF
5123 test "$?" != 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
5124 #include <time.h>
5125 void *v = localtime_r;
5126 EOF
5127
5128 }
5129
5130 probe_libc
5131 test -n "$libc_type" && enable libc_$libc_type
5132 probe_libc host_
5133 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5134
5135 case $libc_type in
5136     bionic)
5137         add_compat strtod.o strtod=avpriv_strtod
5138         ;;
5139 esac
5140
5141 # hacks for compiler/libc/os combinations
5142
5143 if enabled_all tms470 libc_glibc; then
5144     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5145     add_cppflags -D__USER_LABEL_PREFIX__=
5146     add_cppflags -D__builtin_memset=memset
5147     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5148     add_cflags   -pds=48    # incompatible redefinition of macro
5149 fi
5150
5151 if enabled_all ccc libc_glibc; then
5152     add_ldflags -Wl,-z,now  # calls to libots crash without this
5153 fi
5154
5155 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5156     add_cppflags '-I\$(SRC_PATH)/compat/float'
5157
5158 esc(){
5159     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5160 }
5161
5162 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
5163
5164 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5165
5166 set_default libdir
5167 : ${shlibdir_default:="$libdir"}
5168 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5169
5170 set_default $PATHS_LIST
5171 set_default nm
5172
5173 # we need to build at least one lib type
5174 if ! enabled_any static shared; then
5175     cat <<EOF
5176 At least one library type must be built.
5177 Specify --enable-static to build the static libraries or --enable-shared to
5178 build the shared libraries as well. To only build the shared libraries specify
5179 --disable-static in addition to --enable-shared.
5180 EOF
5181     exit 1
5182 fi
5183
5184 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5185
5186 enable_weak_pic() {
5187     disabled pic && return
5188     enable pic
5189     add_cppflags -DPIC
5190     case "$target_os" in
5191     mingw*|cygwin*)
5192         ;;
5193     *)
5194         add_cflags -fPIC
5195         ;;
5196     esac
5197     add_asflags  -fPIC
5198 }
5199
5200 enabled pic && enable_weak_pic
5201
5202 check_cc <<EOF || die "Symbol mangling check failed."
5203 int ff_extern;
5204 EOF
5205 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5206 extern_prefix=${sym%%ff_extern*}
5207
5208 check_cc <<EOF && enable_weak inline_asm
5209 void foo(void) { __asm__ volatile ("" ::); }
5210 EOF
5211
5212 _restrict=
5213 for restrict_keyword in restrict __restrict__ __restrict; do
5214     check_cc <<EOF && _restrict=$restrict_keyword && break
5215 void foo(char * $restrict_keyword p);
5216 EOF
5217 done
5218
5219 check_cc <<EOF && enable pragma_deprecated
5220 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5221 EOF
5222
5223 check_cc <<EOF && enable attribute_packed
5224 struct { int x; } __attribute__((packed)) x;
5225 EOF
5226
5227 check_cc <<EOF && enable attribute_may_alias
5228 union { int x; } __attribute__((may_alias)) x;
5229 EOF
5230
5231 check_cc <<EOF || die "endian test failed"
5232 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5233 EOF
5234 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5235
5236 if ! enabled ppc64 || enabled bigendian; then
5237     disable vsx
5238 fi
5239
5240 check_gas() {
5241     log "check_gas using '$as' as AS"
5242     # :vararg is used on aarch64, arm and ppc altivec
5243     check_as <<EOF || return 1
5244 .macro m n, y:vararg=0
5245 \n: .int \y
5246 .endm
5247 m x
5248 EOF
5249     # .altmacro is only used in arm asm
5250     ! enabled arm || check_as <<EOF || return 1
5251 .altmacro
5252 EOF
5253     enable gnu_as
5254     return 0
5255 }
5256
5257 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5258     nogas=:
5259     enabled_any arm aarch64 && nogas=die
5260     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5261     as_noop=-v
5262
5263     case $as_type in
5264         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5265         gcc)  gaspp_as_type=gas ;;
5266         *)    gaspp_as_type=$as_type ;;
5267     esac
5268
5269     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5270
5271     test "${as#*gas-preprocessor.pl}" != "$as" ||
5272     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5273         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5274
5275     if ! check_gas ; then
5276         as=${gas:=$as}
5277         check_gas || \
5278             $nogas "GNU assembler not found, install/update gas-preprocessor"
5279     fi
5280
5281     check_as <<EOF && enable as_func
5282 .func test
5283 .endfunc
5284 EOF
5285 fi
5286
5287 check_inline_asm inline_asm_labels '"1:\n"'
5288
5289 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5290
5291 if enabled aarch64; then
5292     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5293     # internal assembler in clang 3.3 does not support this instruction
5294     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5295     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5296
5297     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5298
5299 elif enabled alpha; then
5300
5301     check_cflags -mieee
5302
5303 elif enabled arm; then
5304
5305     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5306
5307     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5308 float func(float a, float b){ return a+b; }
5309 EOF
5310
5311     enabled thumb && check_cflags -mthumb || check_cflags -marm
5312
5313     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5314         enable vfp_args
5315     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5316         enable vfp_args
5317     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5318         case "${cross_prefix:-$cc}" in
5319             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5320             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5321 __asm__ (".eabi_attribute 28, 1");
5322 int main(void) { return 0; }
5323 EOF
5324         esac
5325         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5326     fi
5327
5328     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5329     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5330     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5331     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5332     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5333     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5334     enabled setend  && check_insn setend  'setend be'
5335
5336     [ $target_os = linux ] || [ $target_os = android ] ||
5337         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5338             $ARCH_EXT_LIST_ARM
5339
5340     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5341
5342     check_as <<EOF && enable as_dn_directive
5343 ra .dn d0.i16
5344 .unreq ra
5345 EOF
5346     check_as <<EOF && enable as_fpu_directive
5347 .fpu neon
5348 EOF
5349
5350     # llvm's integrated assembler supports .object_arch from llvm 3.5
5351     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5352 .object_arch armv4
5353 EOF
5354
5355     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5356
5357 elif enabled mips; then
5358
5359     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5360     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5361     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5362
5363     # Enable minimum ISA based on selected options
5364     if enabled mips64; then
5365         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5366         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5367         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5368     else
5369         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5370         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5371         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5372         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5373     fi
5374
5375     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5376     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5377     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5378     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5379     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5380
5381 elif enabled parisc; then
5382
5383     if enabled gcc; then
5384         case $($cc -dumpversion) in
5385             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5386         esac
5387     fi
5388
5389 elif enabled ppc; then
5390
5391     enable local_aligned_8 local_aligned_16 local_aligned_32
5392
5393     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5394     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5395     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5396     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5397
5398     # AltiVec flags: The FSF version of GCC differs from the Apple version
5399     if enabled altivec; then
5400         check_cflags -maltivec -mabi=altivec &&
5401         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5402         check_cflags -faltivec
5403
5404         # check if our compiler supports Motorola AltiVec C API
5405         check_cc <<EOF || disable altivec
5406 $inc_altivec_h
5407 int main(void) {
5408     vector signed int v1 = (vector signed int) { 0 };
5409     vector signed int v2 = (vector signed int) { 1 };
5410     v1 = vec_add(v1, v2);
5411     return 0;
5412 }
5413 EOF
5414
5415         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5416     fi
5417
5418     if enabled vsx; then
5419         check_cflags -mvsx &&
5420         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5421     fi
5422
5423     if enabled power8; then
5424         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5425     fi
5426
5427 elif enabled x86; then
5428
5429     check_builtin rdtsc    intrin.h   "__rdtsc()"
5430     check_builtin mm_empty mmintrin.h "_mm_empty()"
5431
5432     enable local_aligned_8 local_aligned_16 local_aligned_32
5433
5434     # check whether EBP is available on x86
5435     # As 'i' is stored on the stack, this program will crash
5436     # if the base pointer is used to access it because the
5437     # base pointer is cleared in the inline assembly code.
5438     check_exec_crash <<EOF && enable ebp_available
5439 volatile int i=0;
5440 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5441 return i;
5442 EOF
5443
5444     # check whether EBX is available on x86
5445     check_inline_asm ebx_available '""::"b"(0)' &&
5446         check_inline_asm ebx_available '"":::"%ebx"'
5447
5448     # check whether xmm clobbers are supported
5449     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5450
5451     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5452         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5453
5454     # check whether binutils is new enough to compile SSSE3/MMXEXT
5455     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5456     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5457
5458     if ! disabled_any asm mmx yasm; then
5459         if check_cmd $yasmexe --version; then
5460             enabled x86_64 && yasm_extra="-m amd64"
5461             yasm_debug="-g dwarf2"
5462         elif check_cmd nasm -v; then
5463             yasmexe=nasm
5464             yasm_debug="-g -F dwarf"
5465             if enabled x86_64; then
5466                 case "$objformat" in
5467                     elf)   objformat=elf64 ;;
5468                     win32) objformat=win64 ;;
5469                 esac
5470             fi
5471         fi
5472
5473         YASMFLAGS="-f $objformat $yasm_extra"
5474         enabled pic               && append YASMFLAGS "-DPIC"
5475         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5476         case "$objformat" in
5477             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5478         esac
5479
5480         check_yasm "movbe ecx, [5]" && enable yasm ||
5481             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5482         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5483         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5484         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5485         check_yasm "CPU amdnop" || disable cpunop
5486     fi
5487
5488     case "$cpu" in
5489         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5490             disable fast_clz
5491         ;;
5492     esac
5493
5494 fi
5495
5496 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5497
5498 check_ldflags -Wl,--as-needed
5499 check_ldflags -Wl,-z,noexecstack
5500
5501 if check_func dlopen && check_func dlsym; then
5502     ldl=
5503 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5504     ldl=-ldl
5505 fi
5506
5507 avisynth_demuxer_extralibs='$ldl'
5508 cuda_extralibs='$ldl'
5509 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5510 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5511 frei0r_filter_extralibs='$ldl'
5512 frei0r_src_filter_extralibs='$ldl'
5513 ladspa_filter_extralibs='$ldl'
5514 nvenc_extralibs='$ldl'
5515 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5516 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5517
5518 if ! disabled network; then
5519     check_func getaddrinfo $network_extralibs
5520     check_func inet_aton $network_extralibs
5521
5522     check_type netdb.h "struct addrinfo"
5523     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5524     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5525     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5526     check_type poll.h "struct pollfd"
5527     check_type netinet/sctp.h "struct sctp_event_subscribe"
5528     check_struct "sys/socket.h" "struct msghdr" msg_flags
5529     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5530     check_type netinet/in.h "struct sockaddr_in6"
5531     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5532     check_type "sys/types.h sys/socket.h" socklen_t
5533
5534     # Prefer arpa/inet.h over winsock2
5535     if check_header arpa/inet.h ; then
5536         check_func closesocket
5537     elif check_header winsock2.h ; then
5538         check_func_headers winsock2.h closesocket -lws2 &&
5539             network_extralibs="-lws2" ||
5540         { check_func_headers winsock2.h closesocket -lws2_32 &&
5541             network_extralibs="-lws2_32"; } || disable winsock2_h network
5542         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5543
5544         check_type ws2tcpip.h socklen_t
5545         check_type ws2tcpip.h "struct addrinfo"
5546         check_type ws2tcpip.h "struct group_source_req"
5547         check_type ws2tcpip.h "struct ip_mreq_source"
5548         check_type ws2tcpip.h "struct ipv6_mreq"
5549         check_type winsock2.h "struct pollfd"
5550         check_struct winsock2.h "struct sockaddr" sa_len
5551         check_type ws2tcpip.h "struct sockaddr_in6"
5552         check_type ws2tcpip.h "struct sockaddr_storage"
5553     else
5554         disable network
5555     fi
5556 fi
5557
5558 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5559 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5560 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5561 check_builtin sarestart signal.h "SA_RESTART"
5562 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5563 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5564 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5565 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5566 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5567
5568 case "$custom_allocator" in
5569     jemalloc)
5570         # jemalloc by default does not use a prefix
5571         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5572     ;;
5573     tcmalloc)
5574         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5575         malloc_prefix=tc_
5576     ;;
5577 esac
5578
5579 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5580 check_func  ${malloc_prefix}memalign            && enable memalign
5581 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5582
5583 check_func  access
5584 check_func_headers stdlib.h arc4random
5585 check_func_headers time.h clock_gettime ||
5586     { check_lib clock_gettime time.h clock_gettime -lrt && LIBRT="-lrt"; }
5587 check_func  fcntl
5588 check_func  fork
5589 check_func  gethrtime
5590 check_func  getopt
5591 check_func  getrusage
5592 check_func  gettimeofday
5593 check_func  isatty
5594 check_func  mach_absolute_time
5595 check_func  mkstemp
5596 check_func  mmap
5597 check_func  mprotect
5598 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5599 check_func_headers time.h nanosleep ||
5600     { check_lib nanosleep time.h nanosleep -lrt && LIBRT="-lrt"; }
5601 check_func  sched_getaffinity
5602 check_func  setrlimit
5603 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5604 check_func  strerror_r
5605 check_func  sysconf
5606 check_func  sysctl
5607 check_func  usleep
5608
5609 check_func_headers conio.h kbhit
5610 check_func_headers io.h setmode
5611 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5612 check_func_headers stdlib.h getenv
5613 check_func_headers sys/stat.h lstat
5614
5615 check_func_headers windows.h GetProcessAffinityMask
5616 check_func_headers windows.h GetProcessTimes
5617 check_func_headers windows.h GetSystemTimeAsFileTime
5618 check_func_headers windows.h LoadLibrary
5619 check_func_headers windows.h MapViewOfFile
5620 check_func_headers windows.h PeekNamedPipe
5621 check_func_headers windows.h SetConsoleTextAttribute
5622 check_func_headers windows.h SetConsoleCtrlHandler
5623 check_func_headers windows.h Sleep
5624 check_func_headers windows.h VirtualAlloc
5625 check_struct windows.h "CONDITION_VARIABLE" Ptr
5626 check_func_headers glob.h glob
5627 enabled xlib &&
5628     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5629
5630 check_header AudioToolbox/AudioToolbox.h
5631 check_header d3d11.h
5632 check_header direct.h
5633 check_header dirent.h
5634 check_header dlfcn.h
5635 check_header dxva.h
5636 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5637 check_header io.h
5638 check_header libcrystalhd/libcrystalhd_if.h
5639 check_header mach/mach_time.h
5640 check_header malloc.h
5641 check_header net/udplite.h
5642 check_header poll.h
5643 check_header sys/mman.h
5644 check_header sys/param.h
5645 check_header sys/resource.h
5646 check_header sys/select.h
5647 check_header sys/time.h
5648 check_header sys/un.h
5649 check_header termios.h
5650 check_header unistd.h
5651 check_header valgrind/valgrind.h
5652 check_header VideoDecodeAcceleration/VDADecoder.h
5653 check_header VideoToolbox/VideoToolbox.h
5654 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5655 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5656 check_header windows.h
5657 check_header X11/extensions/XvMClib.h
5658 check_header asm/types.h
5659
5660 # it seems there are versions of clang in some distros that try to use the
5661 # gcc headers, which explodes for stdatomic
5662 # so we also check that atomics actually work here
5663 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5664
5665 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5666 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5667 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5668
5669 check_lib coreservices "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5670
5671 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5672
5673 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5674 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5675 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5676 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5677 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5678
5679 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5680 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5681 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5682 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5683 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5684 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5685 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5686 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5687
5688 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5689
5690 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5691
5692 if ! disabled w32threads && ! enabled pthreads; then
5693     check_func_headers "windows.h process.h" _beginthreadex &&
5694         enable w32threads || disable w32threads
5695     if ! enabled w32threads && enabled winrt; then
5696         check_func_headers "windows.h" CreateThread &&
5697             enable w32threads || disable w32threads
5698     fi
5699 fi
5700
5701 # check for some common methods of building with pthread support
5702 # do this before the optional library checks as some of them require pthreads
5703 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5704     if check_lib pthreads pthread.h pthread_join   -pthread &&
5705        check_lib pthreads pthread.h pthread_create -pthread; then
5706         add_cflags -pthread
5707     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5708          check_lib pthreads pthread.h pthread_create -pthreads; then
5709         add_cflags -pthreads
5710     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5711          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5712         add_cflags -ldl -pthread
5713     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5714          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5715         :
5716     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5717          check_lib pthreads pthread.h pthread_create -lpthread; then
5718         :
5719     elif check_func pthread_join && check_func pthread_create; then
5720         enable pthreads
5721     fi
5722     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5723 fi
5724
5725
5726 if enabled pthreads; then
5727   check_func pthread_cancel
5728 fi
5729
5730 enabled pthreads &&
5731     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5732
5733 disabled  zlib || check_lib zlib   zlib.h      zlibVersion    -lz
5734 disabled bzlib || check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5735 disabled  lzma || check_lib lzma   lzma.h lzma_version_number -llzma
5736
5737 check_lib libm math.h sin -lm && LIBM="-lm"
5738 disabled crystalhd || check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
5739
5740 atan2f_args=2
5741 copysign_args=2
5742 hypot_args=2
5743 ldexpf_args=2
5744 powf_args=2
5745
5746 for func in $MATH_FUNCS; do
5747     eval check_mathfunc $func \${${func}_args:-1} $LIBM
5748 done
5749
5750 for func in $COMPLEX_FUNCS; do
5751     eval check_complexfunc $func \${${func}_args:-1}
5752 done
5753
5754 # these are off by default, so fail if requested and not available
5755 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5756 enabled avfoundation_indev && { check_lib avfoundation_indev CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5757                                 check_lib avfoundation_indev ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5758 enabled cuda              && check_header cuda.h # this is not a dependency
5759 enabled cuvid             && { enabled cuda ||
5760                                die "ERROR: CUVID requires CUDA"; }
5761 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5762 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5763 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5764 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5765                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5766 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5767 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5768 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5769 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
5770                                check_lib jni "dlfcn.h" dlopen -ldl || die "ERROR: jni not found"; }
5771 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5772 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5773 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5774 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5775 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5776 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5777                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5778                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5779 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5780 enabled libdc1394         && require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new
5781 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5782                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5783                                  warn "using libfdk without pkg-config"; } }
5784 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"
5785 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5786 enabled fontconfig        && enable libfontconfig
5787 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5788 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5789 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5790 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5791 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5792                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5793                                done || die "ERROR: libgsm not found"; }
5794 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5795 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5796 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5797 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5798 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5799 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5800 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5801 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5802 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5803 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5804                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5805                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5806                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5807 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5808 enabled libopenjpeg       && { { check_lib libopenjpeg openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5809                                check_lib libopenjpeg openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5810                                { check_lib libopenjpeg openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5811                                { check_lib libopenjpeg openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5812                                { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5813                                die "ERROR: libopenjpeg not found"; }
5814 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5815 enabled libopus           && {
5816     enabled libopus_decoder && {
5817         require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5818     }
5819     enabled libopus_encoder && {
5820         require_pkg_config opus opus_multistream.h opus_multistream_surround_encoder_create
5821     }
5822 }
5823 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5824 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5825 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5826 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5827 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5828 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5829                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5830 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
5831 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5832 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5833 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5834 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5835 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5836 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5837                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5838                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5839 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5840 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5841 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5842 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5843
5844 enabled libvpx            && {
5845     enabled libvpx_vp8_decoder && {
5846         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5847             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5848                 die "ERROR: libvpx decoder version must be >=0.9.1";
5849     }
5850     enabled libvpx_vp8_encoder && {
5851         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5852             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5853                 die "ERROR: libvpx encoder version must be >=0.9.7";
5854     }
5855     enabled libvpx_vp9_decoder && {
5856         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5857             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx
5858     }
5859     enabled libvpx_vp9_encoder && {
5860         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5861             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx
5862     }
5863     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5864         die "libvpx enabled but no supported decoders found"
5865     fi
5866 }
5867
5868 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5869 enabled libwebp           && {
5870     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5871     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5872 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5873                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
5874                                  warn "using libx264 without pkg-config"; } } &&
5875                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5876                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5877                              { check_cpp_condition x264.h "X264_MPEG2" &&
5878                                enable libx262; }
5879 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5880                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5881                                die "ERROR: libx265 version must be >= 68."; }
5882 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
5883 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5884 enabled libzimg           && require_pkg_config "zimg >= 2.3.0" zimg.h zimg_get_api_version
5885 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5886 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5887                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5888                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5889 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5890 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5891                                { ! enabled cross_compile &&
5892                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
5893                                  add_ldflags -L/opt/vc/lib/ &&
5894                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
5895                                die "ERROR: mmal not found" &&
5896                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
5897 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5898 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5899                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
5900                                die "ERROR: openal not found"; } &&
5901                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5902                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5903 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5904                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5905                                die "ERROR: opencl not found"; } &&
5906                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5907                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5908                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5909 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
5910                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5911                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5912                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5913                                die "ERROR: opengl not found."
5914                              }
5915 enabled omx_rpi           && { check_header OMX_Core.h ||
5916                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
5917                                die "ERROR: OpenMAX IL headers not found"; }
5918 enabled omx               && { check_header OMX_Core.h || die "ERROR: OpenMAX IL headers not found"; }
5919 enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
5920                                use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5921                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5922                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5923                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5924                                die "ERROR: openssl not found"; }
5925 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5926
5927 if enabled gcrypt; then
5928     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5929     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5930         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5931         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
5932         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
5933             die "ERROR: gcrypt not found"
5934         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_extralibs
5935     else
5936         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5937     fi
5938 fi
5939
5940 disabled sdl && disable sdl2
5941 if ! disabled sdl2; then
5942     SDL2_CONFIG="${cross_prefix}sdl2-config"
5943     if check_pkg_config sdl2 SDL_events.h SDL_PollEvent; then
5944         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5945         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5946         check_func SDL_Init $sdl2_extralibs $sdl2_cflags && enable sdl2
5947     else
5948       if "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
5949         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
5950         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
5951         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5952         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5953         check_func SDL_Init $sdl2_extralibs $sdl2_cflags && enable sdl2
5954       fi
5955     fi
5956     if test $target_os = "mingw32"; then
5957         sdl2_extralibs="$sdl2_extralibs -mconsole"
5958     fi
5959 fi
5960 enabled sdl2 && enable sdl && add_cflags $sdl2_cflags && add_extralibs $sdl2_extralibs
5961
5962 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5963     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security"; }
5964
5965 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
5966                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
5967
5968 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5969 enabled makeinfo \
5970     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5971     && enable makeinfo_html || disable makeinfo_html
5972 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5973 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5974 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5975 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5976
5977 check_header linux/fb.h
5978 check_header linux/videodev.h
5979 check_header linux/videodev2.h
5980 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5981
5982 check_header sys/videoio.h
5983 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5984
5985 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
5986 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
5987 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5988 # w32api 3.12 had it defined wrong
5989 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5990
5991 check_type "dshow.h" IBaseFilter
5992
5993 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5994 { check_header dev/bktr/ioctl_meteor.h &&
5995   check_header dev/bktr/ioctl_bt848.h; } ||
5996 { check_header machine/ioctl_meteor.h &&
5997   check_header machine/ioctl_bt848.h; } ||
5998 { check_header dev/video/meteor/ioctl_meteor.h &&
5999   check_header dev/video/bktr/ioctl_bt848.h; } ||
6000 check_header dev/ic/bt8xx.h
6001
6002 if check_struct sys/soundcard.h audio_buf_info bytes; then
6003     enable_safe sys/soundcard.h
6004 else
6005     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
6006     #include <sys/soundcard.h>
6007     audio_buf_info abc;
6008 EOF
6009 fi
6010 check_header soundcard.h
6011
6012 enabled_any alsa_indev alsa_outdev &&
6013     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6014
6015 enabled jack_indev && check_lib jack jack/jack.h jack_client_open -ljack &&
6016     check_func jack_port_get_latency_range -ljack
6017
6018 enabled_any sndio_indev sndio_outdev && check_lib sndio sndio.h sio_open -lsndio
6019
6020 if enabled libcdio; then
6021     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6022     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6023     die "ERROR: No usable libcdio/cdparanoia found"
6024 fi
6025
6026 if ! disabled libxcb; then
6027     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
6028         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
6029     } && enable libxcb
6030
6031 if enabled libxcb; then
6032     disabled libxcb_shm || {
6033         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
6034             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
6035         } && check_header sys/shm.h && enable libxcb_shm; }
6036
6037     disabled libxcb_xfixes || {
6038         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
6039             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
6040         } && enable libxcb_xfixes; }
6041
6042     disabled libxcb_shape || {
6043         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
6044             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
6045         } && enable libxcb_shape; }
6046
6047     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
6048     add_extralibs $xcb_extralibs $xcb_shm_extralibs $xcb_xfixes_extralibs $xcb_shape_extralibs
6049 fi
6050 fi
6051
6052 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6053
6054 enabled dxva2api_h &&
6055     check_cc <<EOF && enable dxva2api_cobj
6056 #define _WIN32_WINNT 0x0600
6057 #define COBJMACROS
6058 #include <windows.h>
6059 #include <d3d9.h>
6060 #include <dxva2api.h>
6061 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
6062 EOF
6063
6064 enabled dxva2 &&
6065     check_lib dxva2_lib windows.h CoTaskMemFree -lole32
6066
6067 enabled vaapi &&
6068     check_lib vaapi va/va.h vaInitialize -lva
6069
6070 enabled vaapi &&
6071     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6072     disable vaapi
6073
6074 enabled vaapi &&
6075     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6076
6077 enabled vaapi &&
6078     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6079
6080 enabled vdpau &&
6081     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6082     disable vdpau
6083
6084 enabled vdpau &&
6085     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6086
6087 if enabled x86; then
6088     case $target_os in
6089         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6090             ;;
6091         *)
6092             disable cuda cuvid nvenc
6093             ;;
6094     esac
6095 else
6096     disable cuda cuvid nvenc
6097 fi
6098
6099 enabled nvenc &&
6100     check_cc -I$source_path <<EOF || disable nvenc
6101 #include "compat/nvenc/nvEncodeAPI.h"
6102 NV_ENCODE_API_FUNCTION_LIST flist;
6103 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6104 int main(void) { return 0; }
6105 EOF
6106
6107 # Funny iconv installations are not unusual, so check it after all flags have been set
6108 disabled iconv || check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6109
6110 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6111
6112 # add some useful compiler flags if supported
6113 check_cflags -Wdeclaration-after-statement
6114 check_cflags -Wall
6115 check_cflags -Wdisabled-optimization
6116 check_cflags -Wpointer-arith
6117 check_cflags -Wredundant-decls
6118 check_cflags -Wwrite-strings
6119 check_cflags -Wtype-limits
6120 check_cflags -Wundef
6121 check_cflags -Wmissing-prototypes
6122 check_cflags -Wno-pointer-to-int-cast
6123 check_cflags -Wstrict-prototypes
6124 check_cflags -Wempty-body
6125
6126 if enabled extra_warnings; then
6127     check_cflags -Wcast-qual
6128     check_cflags -Wextra
6129     check_cflags -Wpedantic
6130 fi
6131
6132 check_disable_warning(){
6133     warning_flag=-W${1#-Wno-}
6134     test_cflags $warning_flag && add_cflags $1
6135 }
6136
6137 check_disable_warning -Wno-parentheses
6138 check_disable_warning -Wno-switch
6139 check_disable_warning -Wno-format-zero-length
6140 check_disable_warning -Wno-pointer-sign
6141 check_disable_warning -Wno-unused-const-variable
6142
6143 check_disable_warning_headers(){
6144     warning_flag=-W${1#-Wno-}
6145     test_cflags $warning_flag && add_cflags_headers $1
6146 }
6147
6148 check_disable_warning_headers -Wno-deprecated-declarations
6149 check_disable_warning_headers -Wno-unused-variable
6150
6151 # add some linker flags
6152 check_ldflags -Wl,--warn-common
6153 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6154 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6155 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6156 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6157
6158 # add some strip flags
6159 # -wN '..@*' is more selective than -x, but not available everywhere.
6160 check_stripflags -wN \'..@*\' || check_stripflags -x
6161
6162 enabled neon_clobber_test &&
6163     check_ldflags -Wl,--wrap,avcodec_open2              \
6164                   -Wl,--wrap,avcodec_decode_audio4      \
6165                   -Wl,--wrap,avcodec_decode_video2      \
6166                   -Wl,--wrap,avcodec_decode_subtitle2   \
6167                   -Wl,--wrap,avcodec_encode_audio2      \
6168                   -Wl,--wrap,avcodec_encode_video2      \
6169                   -Wl,--wrap,avcodec_encode_subtitle    \
6170                   -Wl,--wrap,avcodec_send_packet        \
6171                   -Wl,--wrap,avcodec_receive_packet     \
6172                   -Wl,--wrap,avcodec_send_frame         \
6173                   -Wl,--wrap,avcodec_receive_frame      \
6174                   -Wl,--wrap,swr_convert                \
6175                   -Wl,--wrap,avresample_convert ||
6176     disable neon_clobber_test
6177
6178 enabled xmm_clobber_test &&
6179     check_ldflags -Wl,--wrap,avcodec_open2              \
6180                   -Wl,--wrap,avcodec_decode_audio4      \
6181                   -Wl,--wrap,avcodec_decode_video2      \
6182                   -Wl,--wrap,avcodec_decode_subtitle2   \
6183                   -Wl,--wrap,avcodec_encode_audio2      \
6184                   -Wl,--wrap,avcodec_encode_video2      \
6185                   -Wl,--wrap,avcodec_encode_subtitle    \
6186                   -Wl,--wrap,avcodec_send_packet        \
6187                   -Wl,--wrap,avcodec_receive_packet     \
6188                   -Wl,--wrap,avcodec_send_frame         \
6189                   -Wl,--wrap,avcodec_receive_frame      \
6190                   -Wl,--wrap,swr_convert                \
6191                   -Wl,--wrap,avresample_convert         \
6192                   -Wl,--wrap,sws_scale ||
6193     disable xmm_clobber_test
6194
6195 check_ld "cc" <<EOF && enable proper_dce
6196 extern const int array[512];
6197 static inline int func(void) { return array[0]; }
6198 int main(void) { return 0; }
6199 EOF
6200
6201 if enabled proper_dce; then
6202     echo "X { local: *; };" > $TMPV
6203     if test_ldflags -Wl,${version_script},$TMPV; then
6204         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6205         check_cc <<EOF && enable symver_asm_label
6206 void ff_foo(void) __asm__ ("av_foo@VERSION");
6207 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6208 EOF
6209         check_cc <<EOF && enable symver_gnu_asm
6210 __asm__(".symver ff_foo,av_foo@VERSION");
6211 void ff_foo(void) {}
6212 EOF
6213     fi
6214 fi
6215
6216 if [ -z "$optflags" ]; then
6217     if enabled small; then
6218         optflags=$cflags_size
6219     elif enabled optimizations; then
6220         optflags=$cflags_speed
6221     else
6222         optflags=$cflags_noopt
6223     fi
6224 fi
6225
6226 check_optflags(){
6227     check_cflags "$@"
6228     enabled lto && check_ldflags "$@"
6229 }
6230
6231
6232 if enabled lto; then
6233     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6234     check_cflags  -flto
6235     check_ldflags -flto $cpuflags
6236     disable inline_asm_direct_symbol_refs
6237 fi
6238
6239 check_optflags $optflags
6240 check_optflags -fno-math-errno
6241 check_optflags -fno-signed-zeros
6242
6243 enabled ftrapv && check_cflags -ftrapv
6244
6245 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6246 int x;
6247 EOF
6248
6249
6250 if enabled icc; then
6251     # Just warnings, no remarks
6252     check_cflags -w1
6253     # -wd: Disable following warnings
6254     # 144, 167, 556: -Wno-pointer-sign
6255     # 188: enumerated type mixed with another type
6256     # 1292: attribute "foo" ignored
6257     # 1419: external declaration in primary source file
6258     # 10006: ignoring unknown option -fno-signed-zeros
6259     # 10148: ignoring unknown option -Wno-parentheses
6260     # 10156: ignoring option '-W'; no argument required
6261     # 13200: No EMMS instruction before call to function
6262     # 13203: No EMMS instruction before return from function
6263     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6264     # 11030: Warning unknown option --as-needed
6265     # 10156: ignoring option '-export'; no argument required
6266     check_ldflags -wd10156,11030
6267     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6268     enable ebp_available
6269     # The test above does not test linking
6270     enabled lto && disable symver_asm_label
6271     if enabled x86_32; then
6272         icc_version=$($cc -dumpversion)
6273         test ${icc_version%%.*} -ge 11 &&
6274             check_cflags -falign-stack=maintain-16-byte ||
6275             disable aligned_stack
6276     fi
6277 elif enabled ccc; then
6278     # disable some annoying warnings
6279     add_cflags -msg_disable bitnotint
6280     add_cflags -msg_disable mixfuncvoid
6281     add_cflags -msg_disable nonstandcast
6282     add_cflags -msg_disable unsupieee
6283 elif enabled gcc; then
6284     check_optflags -fno-tree-vectorize
6285     check_cflags -Werror=format-security
6286     check_cflags -Werror=implicit-function-declaration
6287     check_cflags -Werror=missing-prototypes
6288     check_cflags -Werror=return-type
6289     check_cflags -Werror=vla
6290     check_cflags -Wformat
6291     check_cflags -fdiagnostics-color=auto
6292     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6293 elif enabled llvm_gcc; then
6294     check_cflags -mllvm -stack-alignment=16
6295 elif enabled clang; then
6296     check_cflags -mllvm -stack-alignment=16
6297     check_cflags -mstack-alignment=16
6298     check_cflags -Qunused-arguments
6299     check_cflags -Werror=implicit-function-declaration
6300     check_cflags -Werror=missing-prototypes
6301     check_cflags -Werror=return-type
6302 elif enabled cparser; then
6303     add_cflags -Wno-missing-variable-declarations
6304     add_cflags -Wno-empty-statement
6305 elif enabled armcc; then
6306     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6307     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6308     # 2523: use of inline assembly is deprecated
6309     add_cflags -W${armcc_opt},--diag_suppress=2523
6310     add_cflags -W${armcc_opt},--diag_suppress=1207
6311     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6312     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6313     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6314     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6315 elif enabled tms470; then
6316     add_cflags -pds=824 -pds=837
6317     disable inline_asm
6318 elif enabled pathscale; then
6319     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6320 elif enabled_any msvc icl; then
6321     enabled x86_32 && disable aligned_stack
6322     enabled_all x86_32 debug && add_cflags -Oy-
6323     enabled debug && add_ldflags -debug
6324     enable pragma_deprecated
6325     if enabled icl; then
6326         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6327         # (correctly) on icl 13.x.
6328         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6329             add_cflags -Qansi-alias
6330         # Some inline asm is not compilable in debug
6331         if enabled debug; then
6332             disable ebp_available
6333             disable ebx_available
6334         fi
6335     fi
6336     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6337     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6338     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6339     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6340     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6341     # MSVC 2013 and newer can handle it fine.
6342     # If this declspec fails, force including stdlib.h before the restrict redefinition
6343     # happens in config.h.
6344     if [ $_restrict != restrict ]; then
6345         check_cc <<EOF || add_cflags -FIstdlib.h
6346 __declspec($_restrict) void* foo(int);
6347 EOF
6348     fi
6349     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6350     # Issue has been fixed in MSVC v19.00.24218.
6351     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6352         check_cflags -d2SSAOptimizer-
6353     # enable utf-8 source processing on VS2015 U2 and newer
6354     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6355         add_cflags -utf-8
6356 fi
6357
6358 for pfx in "" host_; do
6359     varname=${pfx%_}cc_type
6360     eval "type=\$$varname"
6361     if [ $type = "msvc" ]; then
6362         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6363 static inline int foo(int a) { return a; }
6364 EOF
6365     fi
6366 done
6367
6368 case $as_type in
6369     clang)
6370         add_asflags -Qunused-arguments
6371     ;;
6372 esac
6373
6374 case $ld_type in
6375     clang)
6376         check_ldflags -Qunused-arguments
6377     ;;
6378 esac
6379
6380 case $target_os in
6381     osf1)
6382         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6383     ;;
6384 esac
6385
6386 enable frame_thread_encoder
6387
6388 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6389
6390 check_deps $CONFIG_LIST       \
6391            $CONFIG_EXTRA      \
6392            $HAVE_LIST         \
6393            $ALL_COMPONENTS    \
6394
6395 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"
6396
6397
6398 if test $target_os = "haiku"; then
6399     disable memalign
6400     disable posix_memalign
6401 fi
6402
6403 # add_dep lib dep
6404 # -> enable ${lib}_deps_${dep}
6405 # -> add $dep to ${lib}_deps only once
6406 add_dep() {
6407     lib=$1
6408     dep=$2
6409     enabled "${lib}_deps_${dep}" && return 0
6410     enable  "${lib}_deps_${dep}"
6411     prepend "${lib}_deps" $dep
6412 }
6413
6414 # merge deps lib components
6415 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6416 merge_deps() {
6417     lib=$1
6418     shift
6419     for comp in $*; do
6420         enabled $comp || continue
6421         eval "dep=\"\$${comp}_deps\""
6422         for d in $dep; do
6423             add_dep $lib $d
6424         done
6425     done
6426 }
6427
6428 merge_deps libavfilter $FILTER_LIST
6429
6430 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6431
6432 for thread in $THREADS_LIST; do
6433     if enabled $thread; then
6434         test -n "$thread_type" &&
6435             die "ERROR: Only one thread type must be selected." ||
6436             thread_type="$thread"
6437     fi
6438 done
6439
6440 if disabled stdatomic_h; then
6441     if enabled atomics_gcc; then
6442         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6443     elif enabled atomics_win32; then
6444         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6445     elif enabled atomics_suncc; then
6446         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6447     elif enabled pthreads; then
6448         add_compat atomics/pthread/stdatomic.o
6449         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6450     else
6451         enabled threads && die "Threading is enabled, but no atomics are available"
6452         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6453     fi
6454 fi
6455
6456 # Check if requested libraries were found.
6457 for lib in $AUTODETECT_LIBS; do
6458     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6459 done
6460
6461 enabled zlib && add_cppflags -DZLIB_CONST
6462
6463 # conditional library dependencies, in linking order
6464 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6465 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6466 enabled aresample_filter    && prepend avfilter_deps "swresample"
6467 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6468 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6469 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6470 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6471 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6472 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6473 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6474 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6475 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6476 enabled pan_filter          && prepend avfilter_deps "swresample"
6477 enabled pp_filter           && prepend avfilter_deps "postproc"
6478 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6479 enabled resample_filter && prepend avfilter_deps "avresample"
6480 enabled sab_filter          && prepend avfilter_deps "swscale"
6481 enabled scale_filter    && prepend avfilter_deps "swscale"
6482 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6483 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6484 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6485 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6486 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6487 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6488 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6489 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6490 enabled spp_filter          && prepend avfilter_deps "avcodec"
6491 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6492 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6493 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6494
6495 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6496
6497 enabled opus_decoder    && prepend avcodec_deps "swresample"
6498
6499 expand_deps(){
6500     lib_deps=${1}_deps
6501     eval "deps=\$$lib_deps"
6502     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6503     unique $lib_deps
6504 }
6505
6506 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6507 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6508
6509 map 'expand_deps $v' $LIBRARY_LIST
6510
6511 license="LGPL version 2.1 or later"
6512 if enabled nonfree; then
6513     license="nonfree and unredistributable"
6514 elif enabled gplv3; then
6515     license="GPL version 3 or later"
6516 elif enabled lgplv3; then
6517     license="LGPL version 3 or later"
6518 elif enabled gpl; then
6519     license="GPL version 2 or later"
6520 fi
6521
6522 if test "$quiet" != "yes"; then
6523
6524 echo "install prefix            $prefix"
6525 echo "source path               $source_path"
6526 echo "C compiler                $cc"
6527 echo "C library                 $libc_type"
6528 if test "$host_cc" != "$cc"; then
6529     echo "host C compiler           $host_cc"
6530     echo "host C library            $host_libc_type"
6531 fi
6532 echo "ARCH                      $arch ($cpu)"
6533 if test "$build_suffix" != ""; then
6534     echo "build suffix              $build_suffix"
6535 fi
6536 if test "$progs_suffix" != ""; then
6537     echo "progs suffix              $progs_suffix"
6538 fi
6539 if test "$extra_version" != ""; then
6540     echo "version string suffix     $extra_version"
6541 fi
6542 echo "big-endian                ${bigendian-no}"
6543 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6544 if enabled x86; then
6545     echo "${yasmexe}                      ${yasm-no}"
6546     echo "MMX enabled               ${mmx-no}"
6547     echo "MMXEXT enabled            ${mmxext-no}"
6548     echo "3DNow! enabled            ${amd3dnow-no}"
6549     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6550     echo "SSE enabled               ${sse-no}"
6551     echo "SSSE3 enabled             ${ssse3-no}"
6552     echo "AESNI enabled             ${aesni-no}"
6553     echo "AVX enabled               ${avx-no}"
6554     echo "XOP enabled               ${xop-no}"
6555     echo "FMA3 enabled              ${fma3-no}"
6556     echo "FMA4 enabled              ${fma4-no}"
6557     echo "i686 features enabled     ${i686-no}"
6558     echo "CMOV is fast              ${fast_cmov-no}"
6559     echo "EBX available             ${ebx_available-no}"
6560     echo "EBP available             ${ebp_available-no}"
6561 fi
6562 if enabled aarch64; then
6563     echo "NEON enabled              ${neon-no}"
6564     echo "VFP enabled               ${vfp-no}"
6565 fi
6566 if enabled arm; then
6567     echo "ARMv5TE enabled           ${armv5te-no}"
6568     echo "ARMv6 enabled             ${armv6-no}"
6569     echo "ARMv6T2 enabled           ${armv6t2-no}"
6570     echo "VFP enabled               ${vfp-no}"
6571     echo "NEON enabled              ${neon-no}"
6572     echo "THUMB enabled             ${thumb-no}"
6573 fi
6574 if enabled mips; then
6575     echo "MIPS FPU enabled          ${mipsfpu-no}"
6576     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6577     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6578     echo "MIPS MSA enabled          ${msa-no}"
6579     echo "LOONGSON MMI enabled      ${mmi-no}"
6580 fi
6581 if enabled ppc; then
6582     echo "AltiVec enabled           ${altivec-no}"
6583     echo "VSX enabled               ${vsx-no}"
6584     echo "POWER8 enabled            ${power8-no}"
6585     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6586     echo "dcbzl available           ${dcbzl-no}"
6587 fi
6588 echo "debug symbols             ${debug-no}"
6589 echo "strip symbols             ${stripping-no}"
6590 echo "optimize for size         ${small-no}"
6591 echo "optimizations             ${optimizations-no}"
6592 echo "static                    ${static-no}"
6593 echo "shared                    ${shared-no}"
6594 echo "postprocessing support    ${postproc-no}"
6595 echo "network support           ${network-no}"
6596 echo "threading support         ${thread_type-no}"
6597 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6598 echo "texi2html enabled         ${texi2html-no}"
6599 echo "perl enabled              ${perl-no}"
6600 echo "pod2man enabled           ${pod2man-no}"
6601 echo "makeinfo enabled          ${makeinfo-no}"
6602 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6603 test -n "$random_seed" &&
6604     echo "random seed               ${random_seed}"
6605 echo
6606
6607 echo "External libraries:"
6608 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6609 echo
6610
6611 echo "External libraries providing hardware acceleration:"
6612 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6613 echo
6614
6615 echo "Libraries:"
6616 print_enabled '' $LIBRARY_LIST | print_in_columns
6617 echo
6618
6619 echo "Programs:"
6620 print_enabled '' $PROGRAM_LIST | print_in_columns
6621 echo
6622
6623 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6624     echo "Enabled ${type}s:"
6625     eval list=\$$(toupper $type)_LIST
6626     print_enabled '_*' $list | print_in_columns
6627     echo
6628 done
6629
6630 if test -n "$ignore_tests"; then
6631     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6632     echo "Ignored FATE tests:"
6633     echo $ignore_tests | print_in_columns
6634     echo
6635 fi
6636
6637 echo "License: $license"
6638
6639 echo "Creating configuration files ..."
6640
6641 fi # test "$quiet" != "yes"
6642
6643 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6644
6645 enabled stripping || strip="echo skipping strip"
6646
6647 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6648
6649 cat > ffbuild/config.mak <<EOF
6650 # Automatically generated by configure - do not modify!
6651 ifndef FFMPEG_CONFIG_MAK
6652 FFMPEG_CONFIG_MAK=1
6653 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6654 prefix=$prefix
6655 LIBDIR=\$(DESTDIR)$libdir
6656 SHLIBDIR=\$(DESTDIR)$shlibdir
6657 INCDIR=\$(DESTDIR)$incdir
6658 BINDIR=\$(DESTDIR)$bindir
6659 DATADIR=\$(DESTDIR)$datadir
6660 DOCDIR=\$(DESTDIR)$docdir
6661 MANDIR=\$(DESTDIR)$mandir
6662 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6663 INSTALL_NAME_DIR=$install_name_dir
6664 SRC_PATH=$source_path
6665 SRC_LINK=$source_link
6666 ifndef MAIN_MAKEFILE
6667 SRC_PATH:=\$(SRC_PATH:.%=..%)
6668 endif
6669 CC_IDENT=$cc_ident
6670 ARCH=$arch
6671 INTRINSICS=$intrinsics
6672 CC=$cc
6673 CXX=$cxx
6674 AS=$as
6675 OBJCC=$objcc
6676 LD=$ld
6677 DEPCC=$dep_cc
6678 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6679 DEPAS=$as
6680 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6681 YASM=$yasmexe
6682 DEPYASM=$yasmexe
6683 AR=$ar
6684 ARFLAGS=$arflags
6685 AR_O=$ar_o
6686 RANLIB=$ranlib
6687 STRIP=$strip
6688 CP=cp -p
6689 LN_S=$ln_s
6690 CPPFLAGS=$CPPFLAGS
6691 CFLAGS=$CFLAGS
6692 CXXFLAGS=$CXXFLAGS
6693 OBJCFLAGS=$OBJCFLAGS
6694 ASFLAGS=$ASFLAGS
6695 AS_C=$AS_C
6696 AS_O=$AS_O
6697 OBJCC_C=$OBJCC_C
6698 OBJCC_E=$OBJCC_E
6699 OBJCC_O=$OBJCC_O
6700 CC_C=$CC_C
6701 CC_E=$CC_E
6702 CC_O=$CC_O
6703 CXX_C=$CXX_C
6704 CXX_O=$CXX_O
6705 LD_O=$LD_O
6706 LD_LIB=$LD_LIB
6707 LD_PATH=$LD_PATH
6708 DLLTOOL=$dlltool
6709 WINDRES=$windres
6710 DEPWINDRES=$dep_cc
6711 DOXYGEN=$doxygen
6712 LDFLAGS=$LDFLAGS
6713 LDEXEFLAGS=$LDEXEFLAGS
6714 LDLIBFLAGS=$LDLIBFLAGS
6715 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6716 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6717 YASMFLAGS=$YASMFLAGS
6718 BUILDSUF=$build_suffix
6719 PROGSSUF=$progs_suffix
6720 FULLNAME=$FULLNAME
6721 LIBPREF=$LIBPREF
6722 LIBSUF=$LIBSUF
6723 LIBNAME=$LIBNAME
6724 SLIBPREF=$SLIBPREF
6725 SLIBSUF=$SLIBSUF
6726 EXESUF=$EXESUF
6727 EXTRA_VERSION=$extra_version
6728 CCDEP=$CCDEP
6729 CXXDEP=$CXXDEP
6730 CCDEP_FLAGS=$CCDEP_FLAGS
6731 ASDEP=$ASDEP
6732 ASDEP_FLAGS=$ASDEP_FLAGS
6733 CC_DEPFLAGS=$CC_DEPFLAGS
6734 AS_DEPFLAGS=$AS_DEPFLAGS
6735 HOSTCC=$host_cc
6736 HOSTLD=$host_ld
6737 HOSTCFLAGS=$host_cflags
6738 HOSTCPPFLAGS=$host_cppflags
6739 HOSTEXESUF=$HOSTEXESUF
6740 HOSTLDFLAGS=$host_ldflags
6741 HOSTEXTRALIBS=$host_extralibs
6742 DEPHOSTCC=$host_cc
6743 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6744 HOSTCCDEP=$HOSTCCDEP
6745 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6746 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6747 HOSTCC_C=$HOSTCC_C
6748 HOSTCC_O=$HOSTCC_O
6749 HOSTLD_O=$HOSTLD_O
6750 TARGET_EXEC=$target_exec $target_exec_args
6751 TARGET_PATH=$target_path
6752 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6753 CFLAGS-ffplay=${sdl2_cflags}
6754 CFLAGS_HEADERS=$CFLAGS_HEADERS
6755 ZLIB=$($ldflags_filter -lz)
6756 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6757 EXTRALIBS=$extralibs
6758 COMPAT_OBJS=$compat_objs
6759 INSTALL=$install
6760 LIBTARGET=${LIBTARGET}
6761 SLIBNAME=${SLIBNAME}
6762 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6763 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6764 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6765 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6766 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6767 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6768 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6769 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6770 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6771 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6772 NOREDZONE_FLAGS=$noredzone_flags
6773 LIBFUZZER_PATH=$libfuzzer_path
6774 IGNORE_TESTS=$ignore_tests
6775 EOF
6776
6777 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
6778
6779 print_program_extralibs(){
6780     eval "program_extralibs=\$${1}_extralibs"
6781     eval echo "EXTRALIBS-${1}=${program_extralibs}" >> ffbuild/config.mak
6782 }
6783
6784 map 'print_program_extralibs $v' $PROGRAM_LIST
6785
6786 cat > $TMPH <<EOF
6787 /* Automatically generated by configure - do not modify! */
6788 #ifndef FFMPEG_CONFIG_H
6789 #define FFMPEG_CONFIG_H
6790 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6791 #define FFMPEG_LICENSE "$(c_escape $license)"
6792 #define CONFIG_THIS_YEAR 2017
6793 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6794 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6795 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6796 #define av_restrict $_restrict
6797 #define EXTERN_PREFIX "${extern_prefix}"
6798 #define EXTERN_ASM ${extern_prefix}
6799 #define BUILDSUF "$build_suffix"
6800 #define SLIBSUF "$SLIBSUF"
6801 #define HAVE_MMX2 HAVE_MMXEXT
6802 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6803 EOF
6804
6805 test -n "$assert_level" &&
6806     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6807
6808 test -n "$malloc_prefix" &&
6809     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6810
6811 if enabled yasm; then
6812     append config_files $TMPASM
6813     printf '' >$TMPASM
6814 fi
6815
6816 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6817
6818
6819 mkdir -p doc
6820 mkdir -p tests
6821 mkdir -p tests/api
6822 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6823
6824 print_config ARCH_   "$config_files" $ARCH_LIST
6825 print_config HAVE_   "$config_files" $HAVE_LIST
6826 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6827                                      $CONFIG_EXTRA      \
6828                                      $ALL_COMPONENTS    \
6829
6830 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6831 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
6832
6833 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6834 cp_if_changed $TMPH config.h
6835 touch ffbuild/.config
6836
6837 enabled yasm && cp_if_changed $TMPASM config.asm
6838
6839 cat > $TMPH <<EOF
6840 /* Generated by ffconf */
6841 #ifndef AVUTIL_AVCONFIG_H
6842 #define AVUTIL_AVCONFIG_H
6843 EOF
6844
6845 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6846
6847 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6848
6849 cp_if_changed $TMPH libavutil/avconfig.h
6850
6851 # generate the lists of enabled components
6852 print_enabled_components(){
6853     file=$1
6854     struct_name=$2
6855     name=$3
6856     shift 3
6857     echo "static const $struct_name *$name[] = {" > $TMPH
6858     for c in $*; do
6859         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6860     done
6861     echo "    NULL };" >> $TMPH
6862     cp_if_changed $TMPH $file
6863 }
6864
6865 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6866 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6867
6868 if test -n "$WARNINGS"; then
6869     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6870     enabled fatal_warnings && exit 1
6871 fi
6872
6873 # Settings for pkg-config files
6874
6875 cat > ffbuild/config.sh <<EOF
6876 # Automatically generated by configure - do not modify!
6877 shared=$shared
6878 build_suffix=$build_suffix
6879 prefix=$prefix
6880 libdir=$libdir
6881 incdir=$incdir
6882 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
6883 source_path=${source_path}
6884 LIBPREF=${LIBPREF}
6885 LIBSUF=${LIBSUF}
6886
6887 extralibs_avutil="$LIBRT $LIBM"
6888 extralibs_avcodec="$extralibs"
6889 extralibs_avformat="$extralibs"
6890 extralibs_avdevice="$extralibs"
6891 extralibs_avfilter="$extralibs"
6892 extralibs_avresample="$LIBM"
6893 extralibs_postproc=""
6894 extralibs_swscale="$LIBM"
6895 extralibs_swresample="$LIBM $LIBSOXR"
6896 EOF
6897
6898 for lib in $LIBRARY_LIST; do
6899     lib_deps="$(eval echo \$${lib}_deps)"
6900     echo ${lib}_deps=\"$lib_deps\" >> ffbuild/config.sh
6901 done