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:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --list-decoders          show all available decoders
  67   --list-encoders          show all available encoders
  68   --list-hwaccels          show all available hardware accelerators
  69   --list-demuxers          show all available demuxers
  70   --list-muxers            show all available muxers
  71   --list-parsers           show all available parsers
  72   --list-protocols         show all available protocols
  73   --list-bsfs              show all available bitstream filters
  74   --list-indevs            show all available input devices
  75   --list-outdevs           show all available output devices
  76   --list-filters           show all available filters
  77
  78 Standard options:
  79   --logfile=FILE           log tests and output to FILE [config.log]
  80   --disable-logging        do not log configure debug information
  81   --fatal-warnings         fail if any configure warning is generated
  82   --prefix=PREFIX          install in PREFIX [$prefix]
  83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  86   --libdir=DIR             install libs in DIR [PREFIX/lib]
  87   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  88   --incdir=DIR             install includes in DIR [PREFIX/include]
  89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  90   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  91   --enable-rpath           use rpath to allow installing libraries in paths
  92                            not part of the dynamic linker search path
  93                            use rpath when linking programs [USE WITH CARE]
  94   --install-name-dir=DIR   Darwin directory name for installed targets
  95
  96 Licensing options:
  97   --enable-gpl             allow use of GPL code, the resulting libs
  98                            and binaries will be under GPL [no]
  99   --enable-version3        upgrade (L)GPL to version 3 [no]
 100   --enable-nonfree         allow use of nonfree code, the resulting libs
 101                            and binaries will be unredistributable [no]
 102
 103 Configuration options:
 104   --disable-static         do not build static libraries [no]
 105   --enable-shared          build shared libraries [no]
 106   --enable-small           optimize for size instead of speed
 107   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
 108   --enable-gray            enable full grayscale support (slower color)
 109   --disable-swscale-alpha  disable alpha channel support in swscale
 110   --disable-all            disable building components, libraries and programs
 111   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
 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-libebur128      enable libebur128 for EBU R128 measurement,
 227                            needed for loudnorm filter [no]
 228   --enable-libfaac         enable AAC encoding via libfaac [no]
 229   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 230   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 231   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 232   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 233   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 234   --enable-libgme          enable Game Music Emu via libgme [no]
 235   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 236   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 237   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 238   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 239   --enable-libmodplug      enable ModPlug via libmodplug [no]
 240   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 241   --enable-libnut          enable NUT (de)muxing via libnut,
 242                            native (de)muxer exists [no]
 243   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 244   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 245   --enable-libopencv       enable video filtering via libopencv [no]
 246   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 247   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 248   --enable-libopus         enable Opus de/encoding via libopus [no]
 249   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 250   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 251   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 252   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 253   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 254   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 255   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 256   --enable-libsoxr         enable Include libsoxr resampling [no]
 257   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 258   --enable-libssh          enable SFTP protocol via libssh [no]
 259   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 260   --enable-libtheora       enable Theora encoding via libtheora [no]
 261   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 262   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 263   --enable-libvidstab      enable video stabilization using vid.stab [no]
 264   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 265   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 266                            native implementation exists [no]
 267   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 268   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 269   --enable-libwebp         enable WebP encoding via libwebp [no]
 270   --enable-libx264         enable H.264 encoding via x264 [no]
 271   --enable-libx265         enable HEVC encoding via x265 [no]
 272   --enable-libxavs         enable AVS encoding via xavs [no]
 273   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 274   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 275   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 276   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 277   --enable-libxvid         enable Xvid encoding via xvidcore,
 278                            native MPEG-4/Xvid encoder exists [no]
 279   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 280   --enable-libzmq          enable message passing via libzmq [no]
 281   --enable-libzvbi         enable teletext support via libzvbi [no]
 282   --disable-lzma           disable lzma [autodetect]
 283   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 284   --enable-mediacodec      enable Android MediaCodec support [no]
 285   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
 286   --enable-openal          enable OpenAL 1.1 capture support [no]
 287   --enable-opencl          enable OpenCL code
 288   --enable-opengl          enable OpenGL rendering [no]
 289   --enable-openssl         enable openssl, needed for https support
 290                            if gnutls is not used [no]
 291   --disable-schannel       disable SChannel SSP, needed for TLS support on
 292                            Windows if openssl and gnutls are not used [autodetect]
 293   --disable-sdl            disable sdl [autodetect]
 294   --disable-securetransport disable Secure Transport, needed for TLS support
 295                            on OSX if openssl and gnutls are not used [autodetect]
 296   --enable-x11grab         enable X11 grabbing (legacy) [no]
 297   --disable-xlib           disable xlib [autodetect]
 298   --disable-zlib           disable zlib [autodetect]
 299
 300   The following libraries provide various hardware acceleration features:
 301   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 302   --enable-cuda            enable dynamically linked Nvidia CUDA code [no]
 303   --enable-cuvid           enable Nvidia CUVID support [autodetect]
 304   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 305   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 306   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 307   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 308   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 309   --enable-nvenc           enable Nvidia video encoding code [no]
 310   --enable-omx             enable OpenMAX IL code [no]
 311   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 312   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 313   --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
 314   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 315   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 316
 317 Toolchain options:
 318   --arch=ARCH              select architecture [$arch]
 319   --cpu=CPU                select the minimum required CPU (affects
 320                            instruction selection, may crash on older CPUs)
 321   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 322   --progs-suffix=SUFFIX    program name suffix []
 323   --enable-cross-compile   assume a cross-compiler is used
 324   --sysroot=PATH           root of cross-build tree
 325   --sysinclude=PATH        location of cross-build system headers
 326   --target-os=OS           compiler targets OS [$target_os]
 327   --target-exec=CMD        command to run executables on target
 328   --target-path=DIR        path to view of build directory on target
 329   --target-samples=DIR     path to samples directory on target
 330   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 331   --toolchain=NAME         set tool defaults according to NAME
 332   --nm=NM                  use nm tool NM [$nm_default]
 333   --ar=AR                  use archive tool AR [$ar_default]
 334   --as=AS                  use assembler AS [$as_default]
 335   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 336   --strip=STRIP            use strip tool STRIP [$strip_default]
 337   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 338   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 339   --cc=CC                  use C compiler CC [$cc_default]
 340   --cxx=CXX                use C compiler CXX [$cxx_default]
 341   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 342   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 343   --ld=LD                  use linker LD [$ld_default]
 344   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 345   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 346   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 347   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 348   --host-cc=HOSTCC         use host C compiler HOSTCC
 349   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 350   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 351   --host-ld=HOSTLD         use host linker HOSTLD
 352   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 353   --host-libs=HLIBS        use libs HLIBS when linking for host
 354   --host-os=OS             compiler host OS [$target_os]
 355   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 356   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 357   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 358   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 359   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 360   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 361   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 362   --extra-version=STRING   version string suffix []
 363   --optflags=OPTFLAGS      override optimization-related compiler flags
 364   --build-suffix=SUFFIX    library name suffix []
 365   --enable-pic             build position-independent code
 366   --enable-thumb           compile for Thumb instruction set
 367   --enable-lto             use link-time optimization
 368   --env="ENV=override"     override the environment variables
 369
 370 Advanced options (experts only):
 371   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 372   --custom-allocator=NAME  use a supported custom allocator
 373   --disable-symver         disable symbol versioning
 374   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 375   --disable-safe-bitstream-reader
 376                            disable buffer boundary checking in bitreaders
 377                            (faster, but may crash)
 378   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 379   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 380
 381 Optimization options (experts only):
 382   --disable-asm            disable all assembly optimizations
 383   --disable-altivec        disable AltiVec optimizations
 384   --disable-vsx            disable VSX optimizations
 385   --disable-power8         disable POWER8 optimizations
 386   --disable-amd3dnow       disable 3DNow! optimizations
 387   --disable-amd3dnowext    disable 3DNow! extended optimizations
 388   --disable-mmx            disable MMX optimizations
 389   --disable-mmxext         disable MMXEXT optimizations
 390   --disable-sse            disable SSE optimizations
 391   --disable-sse2           disable SSE2 optimizations
 392   --disable-sse3           disable SSE3 optimizations
 393   --disable-ssse3          disable SSSE3 optimizations
 394   --disable-sse4           disable SSE4 optimizations
 395   --disable-sse42          disable SSE4.2 optimizations
 396   --disable-avx            disable AVX optimizations
 397   --disable-xop            disable XOP optimizations
 398   --disable-fma3           disable FMA3 optimizations
 399   --disable-fma4           disable FMA4 optimizations
 400   --disable-avx2           disable AVX2 optimizations
 401   --disable-aesni          disable AESNI optimizations
 402   --disable-armv5te        disable armv5te optimizations
 403   --disable-armv6          disable armv6 optimizations
 404   --disable-armv6t2        disable armv6t2 optimizations
 405   --disable-vfp            disable VFP optimizations
 406   --disable-neon           disable NEON optimizations
 407   --disable-inline-asm     disable use of inline assembly
 408   --disable-yasm           disable use of nasm/yasm assembly
 409   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 410   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 411   --disable-msa            disable MSA optimizations
 412   --disable-mipsfpu        disable floating point MIPS optimizations
 413   --disable-mmi            disable Loongson SIMD optimizations
 414   --disable-fast-unaligned consider unaligned accesses slow
 415
 416 Developer options (useful when working on FFmpeg itself):
 417   --disable-debug          disable debugging symbols
 418   --enable-debug=LEVEL     set the debug level [$debuglevel]
 419   --disable-optimizations  disable compiler optimizations
 420   --enable-extra-warnings  enable more compiler warnings
 421   --disable-stripping      disable stripping of executables and shared libraries
 422   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 423                            2 causes a slowdown at runtime.
 424   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 425   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 426                            leaks and errors, using the specified valgrind binary.
 427                            Cannot be combined with --target-exec
 428   --enable-ftrapv          Trap arithmetic overflows
 429   --samples=PATH           location of test samples for FATE, if not set use
 430                            \$FATE_SAMPLES at make invocation time.
 431   --enable-neon-clobber-test check NEON registers for clobbering (should be
 432                            used only for debugging purposes)
 433   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 434                            should be used only for debugging purposes)
 435   --enable-random          randomly enable/disable components
 436   --disable-random
 437   --enable-random=LIST     randomly enable/disable specific components or
 438   --disable-random=LIST    component groups. LIST is a comma-separated list
 439                            of NAME[:PROB] entries where NAME is a component
 440                            (group) and PROB the probability associated with
 441                            NAME (default 0.5).
 442   --random-seed=VALUE      seed value for --enable/disable-random
 443   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 444                            (only applies to --disable-optimizations builds)
 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) echo $v ;; esac"
 531     done
 532 }
 533
 534 filter_out(){
 535     pat=$1
 536     shift
 537     for v; do
 538         eval "case $v in $pat) ;; *) echo $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 enable(){
 604     set_all yes $*
 605 }
 606
 607 disable(){
 608     set_all no $*
 609 }
 610
 611 enable_weak(){
 612     set_weak yes $*
 613 }
 614
 615 disable_weak(){
 616     set_weak no $*
 617 }
 618
 619 enable_safe(){
 620     for var; do
 621         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 622     done
 623 }
 624
 625 disable_safe(){
 626     for var; do
 627         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 628     done
 629 }
 630
 631 do_enable_deep(){
 632     for var; do
 633         enabled $var && continue
 634         eval sel="\$${var}_select"
 635         eval sgs="\$${var}_suggest"
 636         pushvar var sgs
 637         enable_deep $sel
 638         popvar sgs
 639         enable_deep_weak $sgs
 640         popvar var
 641     done
 642 }
 643
 644 enable_deep(){
 645     do_enable_deep $*
 646     enable $*
 647 }
 648
 649 enable_deep_weak(){
 650     for var; do
 651         disabled $var && continue
 652         pushvar var
 653         do_enable_deep $var
 654         popvar var
 655         enable_weak $var
 656     done
 657 }
 658
 659 enabled(){
 660     test "${1#!}" = "$1" && op='=' || op=!=
 661     eval test "x\$${1#!}" $op "xyes"
 662 }
 663
 664 disabled(){
 665     test "${1#!}" = "$1" && op='=' || op=!=
 666     eval test "x\$${1#!}" $op "xno"
 667 }
 668
 669 enabled_all(){
 670     for opt; do
 671         enabled $opt || return 1
 672     done
 673 }
 674
 675 disabled_all(){
 676     for opt; do
 677         disabled $opt || return 1
 678     done
 679 }
 680
 681 enabled_any(){
 682     for opt; do
 683         enabled $opt && return 0
 684     done
 685 }
 686
 687 disabled_any(){
 688     for opt; do
 689         disabled $opt && return 0
 690     done
 691     return 1
 692 }
 693
 694 set_default(){
 695     for opt; do
 696         eval : \${$opt:=\$${opt}_default}
 697     done
 698 }
 699
 700 is_in(){
 701     value=$1
 702     shift
 703     for var in $*; do
 704         [ $var = $value ] && return 0
 705     done
 706     return 1
 707 }
 708
 709 do_check_deps(){
 710     for cfg; do
 711         cfg="${cfg#!}"
 712         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 713         disabled ${cfg}_checking && continue
 714         enable ${cfg}_checking
 715         append allopts $cfg
 716
 717         eval dep_all="\$${cfg}_deps"
 718         eval dep_any="\$${cfg}_deps_any"
 719         eval dep_sel="\$${cfg}_select"
 720         eval dep_sgs="\$${cfg}_suggest"
 721         eval dep_ifa="\$${cfg}_if"
 722         eval dep_ifn="\$${cfg}_if_any"
 723
 724         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 725         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 726         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 727
 728         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 729         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 730         enabled_all  $dep_all || disable $cfg
 731         enabled_any  $dep_any || disable $cfg
 732         disabled_any $dep_sel && disable $cfg
 733
 734         if enabled $cfg; then
 735             enable_deep $dep_sel
 736             enable_deep_weak $dep_sgs
 737         fi
 738
 739         disable ${cfg}_checking
 740     done
 741 }
 742
 743 check_deps(){
 744     unset allopts
 745
 746     do_check_deps "$@"
 747
 748     for cfg in $allopts; do
 749         enabled $cfg || continue
 750         eval dep_extralibs="\$${cfg}_extralibs"
 751         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 752     done
 753 }
 754
 755 print_config(){
 756     pfx=$1
 757     files=$2
 758     shift 2
 759     map 'eval echo "$v \${$v:-no}"' "$@" |
 760     awk "BEGIN { split(\"$files\", files) }
 761         {
 762             c = \"$pfx\" toupper(\$1);
 763             v = \$2;
 764             sub(/yes/, 1, v);
 765             sub(/no/,  0, v);
 766             for (f in files) {
 767                 file = files[f];
 768                 if (file ~ /\\.h\$/) {
 769                     printf(\"#define %s %d\\n\", c, v) >>file;
 770                 } else if (file ~ /\\.asm\$/) {
 771                     printf(\"%%define %s %d\\n\", c, v) >>file;
 772                 } else if (file ~ /\\.mak\$/) {
 773                     n = -v ? \"\" : \"!\";
 774                     printf(\"%s%s=yes\\n\", n, c) >>file;
 775                 } else if (file ~ /\\.texi\$/) {
 776                     pre = -v ? \"\" : \"@c \";
 777                     yesno = \$2;
 778                     c2 = tolower(c);
 779                     gsub(/_/, \"-\", c2);
 780                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 781                 }
 782             }
 783         }"
 784 }
 785
 786 print_enabled(){
 787     suf=$1
 788     shift
 789     for v; do
 790         enabled $v && printf "%s\n" ${v%$suf}
 791     done
 792 }
 793
 794 append(){
 795     var=$1
 796     shift
 797     eval "$var=\"\$$var $*\""
 798 }
 799
 800 prepend(){
 801     var=$1
 802     shift
 803     eval "$var=\"$* \$$var\""
 804 }
 805
 806 unique(){
 807     var=$1
 808     uniq_list=""
 809     for tok in $(eval echo \$$var); do
 810         uniq_list="$(filter_out $tok $uniq_list) $tok"
 811     done
 812     eval "$var=\"${uniq_list}\""
 813 }
 814
 815 add_cppflags(){
 816     append CPPFLAGS "$@"
 817 }
 818
 819 add_cflags(){
 820     append CFLAGS $($cflags_filter "$@")
 821 }
 822
 823 add_cxxflags(){
 824     append CXXFLAGS $($cflags_filter "$@")
 825 }
 826
 827 add_asflags(){
 828     append ASFLAGS $($asflags_filter "$@")
 829 }
 830
 831 add_objcflags(){
 832     append OBJCFLAGS $($objcflags_filter "$@")
 833 }
 834
 835 add_ldflags(){
 836     append LDFLAGS $($ldflags_filter "$@")
 837 }
 838
 839 add_ldexeflags(){
 840     append LDEXEFLAGS $($ldflags_filter "$@")
 841 }
 842
 843 add_ldlibflags(){
 844     append LDLIBFLAGS $($ldflags_filter "$@")
 845 }
 846
 847 add_stripflags(){
 848     append ASMSTRIPFLAGS "$@"
 849 }
 850
 851 add_extralibs(){
 852     prepend extralibs $($ldflags_filter "$@")
 853 }
 854
 855 add_host_cppflags(){
 856     append host_cppflags "$@"
 857 }
 858
 859 add_host_cflags(){
 860     append host_cflags $($host_cflags_filter "$@")
 861 }
 862
 863 add_host_ldflags(){
 864     append host_ldflags $($host_ldflags_filter "$@")
 865 }
 866
 867 add_compat(){
 868     append compat_objs $1
 869     shift
 870     map 'add_cppflags -D$v' "$@"
 871 }
 872
 873 check_cmd(){
 874     log "$@"
 875     "$@" >> $logfile 2>&1
 876 }
 877
 878 check_stat(){
 879     log check_stat "$@"
 880     stat "$1" >> $logfile 2>&1
 881 }
 882
 883 cc_o(){
 884     eval printf '%s\\n' $CC_O
 885 }
 886
 887 cc_e(){
 888     eval printf '%s\\n' $CC_E
 889 }
 890
 891 check_cc(){
 892     log check_cc "$@"
 893     cat > $TMPC
 894     log_file $TMPC
 895     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 896 }
 897
 898 check_cxx(){
 899     log check_cxx "$@"
 900     cat > $TMPCPP
 901     log_file $TMPCPP
 902     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 903 }
 904
 905 check_objcc(){
 906     log check_objcc "$@"
 907     cat > $TMPM
 908     log_file $TMPM
 909     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 910 }
 911
 912 check_cpp(){
 913     log check_cpp "$@"
 914     cat > $TMPC
 915     log_file $TMPC
 916     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 917 }
 918
 919 as_o(){
 920     eval printf '%s\\n' $AS_O
 921 }
 922
 923 check_as(){
 924     log check_as "$@"
 925     cat > $TMPS
 926     log_file $TMPS
 927     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 928 }
 929
 930 check_inline_asm(){
 931     log check_inline_asm "$@"
 932     name="$1"
 933     code="$2"
 934     shift 2
 935     disable $name
 936     check_cc "$@" <<EOF && enable $name
 937 void foo(void){ __asm__ volatile($code); }
 938 EOF
 939 }
 940
 941 check_inline_asm_flags(){
 942     log check_inline_asm_flags "$@"
 943     name="$1"
 944     code="$2"
 945     flags=''
 946     shift 2
 947     while [ "$1" != "" ]; do
 948       append flags $1
 949       shift
 950     done;
 951     disable $name
 952     cat > $TMPC <<EOF
 953 void foo(void){ __asm__ volatile($code); }
 954 EOF
 955     log_file $TMPC
 956     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 957     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 958 }
 959
 960 check_insn(){
 961     log check_insn "$@"
 962     check_inline_asm ${1}_inline "\"$2\""
 963     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 964 }
 965
 966 check_yasm(){
 967     log check_yasm "$@"
 968     echo "$1" > $TMPS
 969     log_file $TMPS
 970     shift 1
 971     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 972 }
 973
 974 ld_o(){
 975     eval printf '%s\\n' $LD_O
 976 }
 977
 978 check_ld(){
 979     log check_ld "$@"
 980     type=$1
 981     shift 1
 982     flags=$(filter_out '-l*|*.so' $@)
 983     libs=$(filter '-l*|*.so' $@)
 984     check_$type $($cflags_filter $flags) || return
 985     flags=$($ldflags_filter $flags)
 986     libs=$($ldflags_filter $libs)
 987     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 988 }
 989
 990 print_include(){
 991     hdr=$1
 992     test "${hdr%.h}" = "${hdr}" &&
 993         echo "#include $hdr"    ||
 994         echo "#include <$hdr>"
 995 }
 996
 997 check_code(){
 998     log check_code "$@"
 999     check=$1
1000     headers=$2
1001     code=$3
1002     shift 3
1003     {
1004         for hdr in $headers; do
1005             print_include $hdr
1006         done
1007         echo "int main(void) { $code; return 0; }"
1008     } | check_$check "$@"
1009 }
1010
1011 check_cppflags(){
1012     log check_cppflags "$@"
1013     check_cc "$@" <<EOF && append CPPFLAGS "$@"
1014 int x;
1015 EOF
1016 }
1017
1018 test_cflags(){
1019     log test_cflags "$@"
1020     set -- $($cflags_filter "$@")
1021     check_cc "$@" <<EOF
1022 int x;
1023 EOF
1024 }
1025
1026 check_cflags(){
1027     log check_cflags "$@"
1028     test_cflags "$@" && add_cflags "$@"
1029 }
1030
1031 check_cxxflags(){
1032     log check_cxxflags "$@"
1033     set -- $($cflags_filter "$@")
1034     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1035 int x;
1036 EOF
1037 }
1038
1039 test_objcflags(){
1040     log test_cflags "$@"
1041     set -- $($cflags_filter "$@")
1042     check_objcc "$@" <<EOF
1043 int x;
1044 EOF
1045 }
1046
1047 check_objcflags(){
1048     log check_cflags "$@"
1049     test_objcflags "$@" && add_objcflags "$@"
1050 }
1051
1052 test_ldflags(){
1053     log test_ldflags "$@"
1054     check_ld "cc" "$@" <<EOF
1055 int main(void){ return 0; }
1056 EOF
1057 }
1058
1059 check_ldflags(){
1060     log check_ldflags "$@"
1061     test_ldflags "$@" && add_ldflags "$@"
1062 }
1063
1064 test_stripflags(){
1065     log test_stripflags "$@"
1066     # call check_cc to get a fresh TMPO
1067     check_cc <<EOF
1068 int main(void) { return 0; }
1069 EOF
1070     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1071 }
1072
1073 check_stripflags(){
1074     log check_stripflags "$@"
1075     test_stripflags "$@" && add_stripflags "$@"
1076 }
1077
1078 check_header(){
1079     log check_header "$@"
1080     header=$1
1081     shift
1082     disable_safe $header
1083     check_cpp "$@" <<EOF && enable_safe $header
1084 #include <$header>
1085 int x;
1086 EOF
1087 }
1088
1089 check_header_objcc(){
1090     log check_header_objcc "$@"
1091     rm -f -- "$TMPO"
1092     header=$1
1093     shift
1094     disable_safe $header
1095     {
1096        echo "#include <$header>"
1097        echo "int main(void) { return 0; }"
1098     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1099 }
1100
1101 check_func(){
1102     log check_func "$@"
1103     func=$1
1104     shift
1105     disable $func
1106     check_ld "cc" "$@" <<EOF && enable $func
1107 extern int $func();
1108 int main(void){ $func(); }
1109 EOF
1110 }
1111
1112 check_complexfunc(){
1113     log check_complexfunc "$@"
1114     func=$1
1115     narg=$2
1116     shift 2
1117     test $narg = 2 && args="f, g" || args="f * I"
1118     disable $func
1119     check_ld "cc" "$@" <<EOF && enable $func
1120 #include <complex.h>
1121 #include <math.h>
1122 float foo(complex float f, complex float g) { return $func($args); }
1123 int main(void){ return (int) foo; }
1124 EOF
1125 }
1126
1127 check_mathfunc(){
1128     log check_mathfunc "$@"
1129     func=$1
1130     narg=$2
1131     shift 2
1132     test $narg = 2 && args="f, g" || args="f"
1133     disable $func
1134     check_ld "cc" "$@" <<EOF && enable $func
1135 #include <math.h>
1136 float foo(float f, float g) { return $func($args); }
1137 int main(void){ return (int) foo; }
1138 EOF
1139 }
1140
1141 check_func_headers(){
1142     log check_func_headers "$@"
1143     headers=$1
1144     funcs=$2
1145     shift 2
1146     {
1147         for hdr in $headers; do
1148             print_include $hdr
1149         done
1150         for func in $funcs; do
1151             echo "long check_$func(void) { return (long) $func; }"
1152         done
1153         echo "int main(void) { return 0; }"
1154     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1155 }
1156
1157 check_class_headers_cpp(){
1158     log check_class_headers_cpp "$@"
1159     headers=$1
1160     classes=$2
1161     shift 2
1162     {
1163         for hdr in $headers; do
1164             echo "#include <$hdr>"
1165         done
1166         echo "int main(void) { "
1167         i=1
1168         for class in $classes; do
1169             echo "$class obj$i;"
1170             i=$(expr $i + 1)
1171         done
1172         echo "return 0; }"
1173     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1174 }
1175
1176 check_cpp_condition(){
1177     log check_cpp_condition "$@"
1178     header=$1
1179     condition=$2
1180     shift 2
1181     check_cpp "$@" <<EOF
1182 #include <$header>
1183 #if !($condition)
1184 #error "unsatisfied condition: $condition"
1185 #endif
1186 EOF
1187 }
1188
1189 check_lib(){
1190     log check_lib "$@"
1191     header="$1"
1192     func="$2"
1193     shift 2
1194     check_header $header && check_func $func "$@" && add_extralibs "$@"
1195 }
1196
1197 check_lib2(){
1198     log check_lib2 "$@"
1199     headers="$1"
1200     funcs="$2"
1201     shift 2
1202     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1203 }
1204
1205 check_lib_cpp(){
1206     log check_lib_cpp "$@"
1207     headers="$1"
1208     classes="$2"
1209     shift 2
1210     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1211 }
1212
1213 check_pkg_config(){
1214     log check_pkg_config "$@"
1215     pkgandversion="$1"
1216     pkg="${1%% *}"
1217     headers="$2"
1218     funcs="$3"
1219     shift 3
1220     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1221     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1222     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1223     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1224         set_safe "${pkg}_cflags" $pkg_cflags   &&
1225         set_safe "${pkg}_libs"   $pkg_libs
1226 }
1227
1228 check_exec(){
1229     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1230 }
1231
1232 check_exec_crash(){
1233     code=$(cat)
1234
1235     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1236     # are safe but may not be available everywhere.  Thus we use
1237     # raise(SIGTERM) instead.  The check is run in a subshell so we
1238     # can redirect the "Terminated" message from the shell.  SIGBUS
1239     # is not defined by standard C so it is used conditionally.
1240
1241     (check_exec "$@") >> $logfile 2>&1 <<EOF
1242 #include <signal.h>
1243 static void sighandler(int sig){
1244     raise(SIGTERM);
1245 }
1246 int foo(void){
1247     $code
1248 }
1249 int (*func_ptr)(void) = foo;
1250 int main(void){
1251     signal(SIGILL, sighandler);
1252     signal(SIGFPE, sighandler);
1253     signal(SIGSEGV, sighandler);
1254 #ifdef SIGBUS
1255     signal(SIGBUS, sighandler);
1256 #endif
1257     return func_ptr();
1258 }
1259 EOF
1260 }
1261
1262 check_type(){
1263     log check_type "$@"
1264     headers=$1
1265     type=$2
1266     shift 2
1267     disable_safe "$type"
1268     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1269 }
1270
1271 check_struct(){
1272     log check_struct "$@"
1273     headers=$1
1274     struct=$2
1275     member=$3
1276     shift 3
1277     disable_safe "${struct}_${member}"
1278     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1279         enable_safe "${struct}_${member}"
1280 }
1281
1282 check_builtin(){
1283     log check_builtin "$@"
1284     name=$1
1285     headers=$2
1286     builtin=$3
1287     shift 3
1288     disable "$name"
1289     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1290 }
1291
1292 check_compile_assert(){
1293     log check_compile_assert "$@"
1294     name=$1
1295     headers=$2
1296     condition=$3
1297     shift 3
1298     disable "$name"
1299     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1300 }
1301
1302 require(){
1303     name="$1"
1304     header="$2"
1305     func="$3"
1306     shift 3
1307     check_lib $header $func "$@" || die "ERROR: $name not found"
1308 }
1309
1310 require2(){
1311     name="$1"
1312     headers="$2"
1313     func="$3"
1314     shift 3
1315     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1316 }
1317
1318 require_cpp(){
1319     name="$1"
1320     headers="$2"
1321     classes="$3"
1322     shift 3
1323     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1324 }
1325
1326 use_pkg_config(){
1327     pkg="$1"
1328     check_pkg_config "$@" || return 1
1329     add_cflags    $(get_safe "${pkg}_cflags")
1330     add_extralibs $(get_safe "${pkg}_libs")
1331 }
1332
1333 require_pkg_config(){
1334     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1335 }
1336
1337 require_libfreetype(){
1338     log require_libfreetype "$@"
1339     pkg="freetype2"
1340     check_cmd $pkg_config --exists --print-errors $pkg \
1341       || die "ERROR: $pkg not found"
1342     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1343     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1344     {
1345         echo "#include <ft2build.h>"
1346         echo "#include FT_FREETYPE_H"
1347         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1348         echo "int main(void) { return 0; }"
1349     } | check_ld "cc" $pkg_cflags $pkg_libs \
1350       && set_safe "${pkg}_cflags" $pkg_cflags \
1351       && set_safe "${pkg}_libs"   $pkg_libs \
1352       || die "ERROR: $pkg not found"
1353     add_cflags    $(get_safe "${pkg}_cflags")
1354     add_extralibs $(get_safe "${pkg}_libs")
1355 }
1356
1357 hostcc_e(){
1358     eval printf '%s\\n' $HOSTCC_E
1359 }
1360
1361 hostcc_o(){
1362     eval printf '%s\\n' $HOSTCC_O
1363 }
1364
1365 check_host_cc(){
1366     log check_host_cc "$@"
1367     cat > $TMPC
1368     log_file $TMPC
1369     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1370 }
1371
1372 check_host_cpp(){
1373     log check_host_cpp "$@"
1374     cat > $TMPC
1375     log_file $TMPC
1376     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1377 }
1378
1379 check_host_cppflags(){
1380     log check_host_cppflags "$@"
1381     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1382 int x;
1383 EOF
1384 }
1385
1386 check_host_cflags(){
1387     log check_host_cflags "$@"
1388     set -- $($host_cflags_filter "$@")
1389     check_host_cc "$@" <<EOF && append host_cflags "$@"
1390 int x;
1391 EOF
1392 }
1393
1394 check_host_cpp_condition(){
1395     log check_host_cpp_condition "$@"
1396     header=$1
1397     condition=$2
1398     shift 2
1399     check_host_cpp "$@" <<EOF
1400 #include <$header>
1401 #if !($condition)
1402 #error "unsatisfied condition: $condition"
1403 #endif
1404 EOF
1405 }
1406
1407 cp_if_changed(){
1408     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1409     mkdir -p "$(dirname $2)"
1410     $cp_f "$1" "$2"
1411 }
1412
1413 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1414 # system-dependent things.
1415
1416 AVCODEC_COMPONENTS="
1417     bsfs
1418     decoders
1419     encoders
1420     hwaccels
1421     parsers
1422 "
1423
1424 AVDEVICE_COMPONENTS="
1425     indevs
1426     outdevs
1427 "
1428 AVFILTER_COMPONENTS="
1429     filters
1430 "
1431 AVFORMAT_COMPONENTS="
1432     demuxers
1433     muxers
1434     protocols
1435 "
1436
1437 AVRESAMPLE_COMPONENTS=""
1438 AVUTIL_COMPONENTS=""
1439
1440 COMPONENT_LIST="
1441     $AVCODEC_COMPONENTS
1442     $AVDEVICE_COMPONENTS
1443     $AVFILTER_COMPONENTS
1444     $AVFORMAT_COMPONENTS
1445     $AVRESAMPLE_COMPONENTS
1446     $AVUTIL_COMPONENTS
1447 "
1448
1449 EXAMPLE_LIST="
1450     avio_reading_example
1451     avio_dir_cmd_example
1452     decoding_encoding_example
1453     demuxing_decoding_example
1454     extract_mvs_example
1455     filter_audio_example
1456     filtering_audio_example
1457     filtering_video_example
1458     metadata_example
1459     muxing_example
1460     qsvdec_example
1461     remuxing_example
1462     resampling_audio_example
1463     scaling_video_example
1464     transcode_aac_example
1465     transcoding_example
1466 "
1467
1468 EXTERNAL_LIBRARY_LIST="
1469     avisynth
1470     bzlib
1471     chromaprint
1472     crystalhd
1473     decklink
1474     frei0r
1475     gcrypt
1476     gmp
1477     gnutls
1478     iconv
1479     jni
1480     ladspa
1481     libass
1482     libbluray
1483     libbs2b
1484     libcaca
1485     libcdio
1486     libcelt
1487     libdc1394
1488     libebur128
1489     libfaac
1490     libfdk_aac
1491     libflite
1492     libfontconfig
1493     libfreetype
1494     libfribidi
1495     libgme
1496     libgsm
1497     libiec61883
1498     libilbc
1499     libkvazaar
1500     libmodplug
1501     libmp3lame
1502     libnut
1503     libopencore_amrnb
1504     libopencore_amrwb
1505     libopencv
1506     libopenh264
1507     libopenjpeg
1508     libopus
1509     libpulse
1510     librtmp
1511     librubberband
1512     libschroedinger
1513     libshine
1514     libsmbclient
1515     libsnappy
1516     libsoxr
1517     libspeex
1518     libssh
1519     libtesseract
1520     libtheora
1521     libtwolame
1522     libv4l2
1523     libvidstab
1524     libvo_amrwbenc
1525     libvorbis
1526     libvpx
1527     libwavpack
1528     libwebp
1529     libx264
1530     libx265
1531     libxavs
1532     libxcb
1533     libxcb_shm
1534     libxcb_shape
1535     libxcb_xfixes
1536     libxvid
1537     libzimg
1538     libzmq
1539     libzvbi
1540     lzma
1541     mediacodec
1542     netcdf
1543     openal
1544     opencl
1545     opengl
1546     openssl
1547     schannel
1548     sdl
1549     securetransport
1550     videotoolbox
1551     x11grab
1552     xlib
1553     zlib
1554 "
1555
1556 HWACCEL_LIBRARY_LIST="
1557     audiotoolbox
1558     cuda
1559     cuvid
1560     d3d11va
1561     dxva2
1562     libmfx
1563     libnpp
1564     mmal
1565     nvenc
1566     omx
1567     vaapi
1568     vda
1569     vdpau
1570     videotoolbox_hwaccel
1571     xvmc
1572 "
1573
1574 DOCUMENT_LIST="
1575     doc
1576     htmlpages
1577     manpages
1578     podpages
1579     txtpages
1580 "
1581
1582 FEATURE_LIST="
1583     ftrapv
1584     gray
1585     hardcoded_tables
1586     omx_rpi
1587     runtime_cpudetect
1588     safe_bitstream_reader
1589     shared
1590     small
1591     static
1592     swscale_alpha
1593 "
1594
1595 LIBRARY_LIST="
1596     avcodec
1597     avdevice
1598     avfilter
1599     avformat
1600     avresample
1601     avutil
1602     postproc
1603     swresample
1604     swscale
1605 "
1606
1607 LICENSE_LIST="
1608     gpl
1609     nonfree
1610     version3
1611 "
1612
1613 PROGRAM_LIST="
1614     ffplay
1615     ffprobe
1616     ffserver
1617     ffmpeg
1618 "
1619
1620 SUBSYSTEM_LIST="
1621     dct
1622     dwt
1623     error_resilience
1624     faan
1625     fast_unaligned
1626     fft
1627     lsp
1628     lzo
1629     mdct
1630     pixelutils
1631     network
1632     rdft
1633 "
1634
1635 CONFIG_LIST="
1636     $COMPONENT_LIST
1637     $DOCUMENT_LIST
1638     $EXAMPLE_LIST
1639     $EXTERNAL_LIBRARY_LIST
1640     $HWACCEL_LIBRARY_LIST
1641     $FEATURE_LIST
1642     $LICENSE_LIST
1643     $LIBRARY_LIST
1644     $PROGRAM_LIST
1645     $SUBSYSTEM_LIST
1646     fontconfig
1647     incompatible_libav_abi
1648     memalign_hack
1649     memory_poisoning
1650     neon_clobber_test
1651     pic
1652     pod2man
1653     raise_major
1654     thumb
1655     valgrind_backtrace
1656     xmm_clobber_test
1657 "
1658
1659 THREADS_LIST="
1660     pthreads
1661     os2threads
1662     w32threads
1663 "
1664
1665 ATOMICS_LIST="
1666     atomics_gcc
1667     atomics_suncc
1668     atomics_win32
1669 "
1670
1671 ARCH_LIST="
1672     aarch64
1673     alpha
1674     arm
1675     avr32
1676     avr32_ap
1677     avr32_uc
1678     bfin
1679     ia64
1680     m68k
1681     mips
1682     mips64
1683     parisc
1684     ppc
1685     ppc64
1686     s390
1687     sh4
1688     sparc
1689     sparc64
1690     tilegx
1691     tilepro
1692     tomi
1693     x86
1694     x86_32
1695     x86_64
1696 "
1697
1698 ARCH_EXT_LIST_ARM="
1699     armv5te
1700     armv6
1701     armv6t2
1702     armv8
1703     neon
1704     vfp
1705     vfpv3
1706     setend
1707 "
1708
1709 ARCH_EXT_LIST_MIPS="
1710     mipsfpu
1711     mips32r2
1712     mips32r5
1713     mips64r2
1714     mips32r6
1715     mips64r6
1716     mipsdsp
1717     mipsdspr2
1718     msa
1719 "
1720
1721 ARCH_EXT_LIST_LOONGSON="
1722     loongson2
1723     loongson3
1724     mmi
1725 "
1726
1727 ARCH_EXT_LIST_X86_SIMD="
1728     aesni
1729     amd3dnow
1730     amd3dnowext
1731     avx
1732     avx2
1733     fma3
1734     fma4
1735     mmx
1736     mmxext
1737     sse
1738     sse2
1739     sse3
1740     sse4
1741     sse42
1742     ssse3
1743     xop
1744 "
1745
1746 ARCH_EXT_LIST_PPC="
1747     altivec
1748     dcbzl
1749     ldbrx
1750     power8
1751     ppc4xx
1752     vsx
1753 "
1754
1755 ARCH_EXT_LIST_X86="
1756     $ARCH_EXT_LIST_X86_SIMD
1757     cpunop
1758     i686
1759 "
1760
1761 ARCH_EXT_LIST="
1762     $ARCH_EXT_LIST_ARM
1763     $ARCH_EXT_LIST_PPC
1764     $ARCH_EXT_LIST_X86
1765     $ARCH_EXT_LIST_MIPS
1766     $ARCH_EXT_LIST_LOONGSON
1767 "
1768
1769 ARCH_FEATURES="
1770     aligned_stack
1771     fast_64bit
1772     fast_clz
1773     fast_cmov
1774     local_aligned_8
1775     local_aligned_16
1776     local_aligned_32
1777     simd_align_16
1778 "
1779
1780 BUILTIN_LIST="
1781     atomic_cas_ptr
1782     atomic_compare_exchange
1783     machine_rw_barrier
1784     MemoryBarrier
1785     mm_empty
1786     rdtsc
1787     sarestart
1788     sem_timedwait
1789     sync_val_compare_and_swap
1790 "
1791 HAVE_LIST_CMDLINE="
1792     inline_asm
1793     symver
1794     yasm
1795 "
1796
1797 HAVE_LIST_PUB="
1798     bigendian
1799     fast_unaligned
1800     incompatible_libav_abi
1801 "
1802
1803 HEADERS_LIST="
1804     alsa_asoundlib_h
1805     altivec_h
1806     arpa_inet_h
1807     asm_types_h
1808     cdio_paranoia_h
1809     cdio_paranoia_paranoia_h
1810     dispatch_dispatch_h
1811     dev_bktr_ioctl_bt848_h
1812     dev_bktr_ioctl_meteor_h
1813     dev_ic_bt8xx_h
1814     dev_video_bktr_ioctl_bt848_h
1815     dev_video_meteor_ioctl_meteor_h
1816     direct_h
1817     dirent_h
1818     dlfcn_h
1819     d3d11_h
1820     dxva_h
1821     ES2_gl_h
1822     gsm_h
1823     io_h
1824     mach_mach_time_h
1825     machine_ioctl_bt848_h
1826     machine_ioctl_meteor_h
1827     malloc_h
1828     opencv2_core_core_c_h
1829     openjpeg_2_1_openjpeg_h
1830     openjpeg_2_0_openjpeg_h
1831     openjpeg_1_5_openjpeg_h
1832     OpenGL_gl3_h
1833     poll_h
1834     sndio_h
1835     soundcard_h
1836     sys_mman_h
1837     sys_param_h
1838     sys_resource_h
1839     sys_select_h
1840     sys_soundcard_h
1841     sys_time_h
1842     sys_un_h
1843     sys_videoio_h
1844     termios_h
1845     udplite_h
1846     unistd_h
1847     valgrind_valgrind_h
1848     windows_h
1849     winsock2_h
1850 "
1851
1852 INTRINSICS_LIST="
1853     intrinsics_neon
1854 "
1855
1856 COMPLEX_FUNCS="
1857     cabs
1858     cexp
1859 "
1860
1861 MATH_FUNCS="
1862     atanf
1863     atan2f
1864     cbrt
1865     cbrtf
1866     copysign
1867     cosf
1868     erf
1869     exp2
1870     exp2f
1871     expf
1872     hypot
1873     isfinite
1874     isinf
1875     isnan
1876     ldexpf
1877     llrint
1878     llrintf
1879     log2
1880     log2f
1881     log10f
1882     lrint
1883     lrintf
1884     powf
1885     rint
1886     round
1887     roundf
1888     sinf
1889     trunc
1890     truncf
1891 "
1892
1893 SYSTEM_FUNCS="
1894     access
1895     aligned_malloc
1896     arc4random
1897     clock_gettime
1898     closesocket
1899     CommandLineToArgvW
1900     CoTaskMemFree
1901     CryptGenRandom
1902     dlopen
1903     fcntl
1904     flt_lim
1905     fork
1906     getaddrinfo
1907     gethrtime
1908     getopt
1909     GetProcessAffinityMask
1910     GetProcessMemoryInfo
1911     GetProcessTimes
1912     getrusage
1913     GetSystemTimeAsFileTime
1914     gettimeofday
1915     glob
1916     glXGetProcAddress
1917     gmtime_r
1918     inet_aton
1919     isatty
1920     jack_port_get_latency_range
1921     kbhit
1922     localtime_r
1923     lstat
1924     lzo1x_999_compress
1925     mach_absolute_time
1926     MapViewOfFile
1927     memalign
1928     mkstemp
1929     mmap
1930     mprotect
1931     nanosleep
1932     PeekNamedPipe
1933     posix_memalign
1934     pthread_cancel
1935     sched_getaffinity
1936     SetConsoleTextAttribute
1937     SetConsoleCtrlHandler
1938     setmode
1939     setrlimit
1940     Sleep
1941     strerror_r
1942     sysconf
1943     sysctl
1944     usleep
1945     UTGetOSTypeFromString
1946     VirtualAlloc
1947     wglGetProcAddress
1948 "
1949
1950 TOOLCHAIN_FEATURES="
1951     as_dn_directive
1952     as_func
1953     as_object_arch
1954     asm_mod_q
1955     attribute_may_alias
1956     attribute_packed
1957     ebp_available
1958     ebx_available
1959     gnu_as
1960     gnu_windres
1961     ibm_asm
1962     inline_asm_direct_symbol_refs
1963     inline_asm_labels
1964     inline_asm_nonlocal_labels
1965     pragma_deprecated
1966     rsync_contimeout
1967     symver_asm_label
1968     symver_gnu_asm
1969     vfp_args
1970     xform_asm
1971     xmm_clobbers
1972 "
1973
1974 TYPES_LIST="
1975     CONDITION_VARIABLE_Ptr
1976     socklen_t
1977     struct_addrinfo
1978     struct_group_source_req
1979     struct_ip_mreq_source
1980     struct_ipv6_mreq
1981     struct_msghdr_msg_flags
1982     struct_pollfd
1983     struct_rusage_ru_maxrss
1984     struct_sctp_event_subscribe
1985     struct_sockaddr_in6
1986     struct_sockaddr_sa_len
1987     struct_sockaddr_storage
1988     struct_stat_st_mtim_tv_nsec
1989     struct_v4l2_frmivalenum_discrete
1990 "
1991
1992 HAVE_LIST="
1993     $ARCH_EXT_LIST
1994     $(add_suffix _external $ARCH_EXT_LIST)
1995     $(add_suffix _inline   $ARCH_EXT_LIST)
1996     $ARCH_FEATURES
1997     $ATOMICS_LIST
1998     $BUILTIN_LIST
1999     $COMPLEX_FUNCS
2000     $HAVE_LIST_CMDLINE
2001     $HAVE_LIST_PUB
2002     $HEADERS_LIST
2003     $INTRINSICS_LIST
2004     $MATH_FUNCS
2005     $SYSTEM_FUNCS
2006     $THREADS_LIST
2007     $TOOLCHAIN_FEATURES
2008     $TYPES_LIST
2009     atomics_native
2010     dos_paths
2011     dxva2_lib
2012     dxva2api_cobj
2013     libc_msvcrt
2014     libdc1394_1
2015     libdc1394_2
2016     makeinfo
2017     makeinfo_html
2018     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2019     perl
2020     pod2man
2021     sdl
2022     section_data_rel_ro
2023     texi2html
2024     threads
2025     vaapi_drm
2026     vaapi_x11
2027     vdpau_x11
2028     winrt
2029     xlib
2030 "
2031
2032 # options emitted with CONFIG_ prefix but not available on the command line
2033 CONFIG_EXTRA="
2034     aandcttables
2035     ac3dsp
2036     audio_frame_queue
2037     audiodsp
2038     blockdsp
2039     bswapdsp
2040     cabac
2041     dirac_parse
2042     dvprofile
2043     exif
2044     faandct
2045     faanidct
2046     fdctdsp
2047     flacdsp
2048     fmtconvert
2049     frame_thread_encoder
2050     g722dsp
2051     golomb
2052     gplv3
2053     h263dsp
2054     h264chroma
2055     h264dsp
2056     h264pred
2057     h264qpel
2058     hpeldsp
2059     huffman
2060     huffyuvdsp
2061     huffyuvencdsp
2062     idctdsp
2063     iirfilter
2064     imdct15
2065     intrax8
2066     iso_media
2067     ividsp
2068     jpegtables
2069     lgplv3
2070     libx262
2071     llauddsp
2072     llviddsp
2073     lpc
2074     lzf
2075     me_cmp
2076     mpeg_er
2077     mpegaudio
2078     mpegaudiodsp
2079     mpegvideo
2080     mpegvideoenc
2081     mss34dsp
2082     pixblockdsp
2083     qpeldsp
2084     qsv
2085     qsvdec
2086     qsvenc
2087     rangecoder
2088     riffdec
2089     riffenc
2090     rtpdec
2091     rtpenc_chain
2092     rv34dsp
2093     sinewin
2094     snappy
2095     srtp
2096     startcode
2097     texturedsp
2098     texturedspenc
2099     tpeldsp
2100     vaapi_encode
2101     vc1dsp
2102     videodsp
2103     vp3dsp
2104     vp56dsp
2105     vp8dsp
2106     vt_bt2020
2107     wma_freqs
2108     wmv2dsp
2109 "
2110
2111 CMDLINE_SELECT="
2112     $ARCH_EXT_LIST
2113     $CONFIG_LIST
2114     $HAVE_LIST_CMDLINE
2115     $THREADS_LIST
2116     asm
2117     cross_compile
2118     debug
2119     extra_warnings
2120     logging
2121     lto
2122     optimizations
2123     rpath
2124     stripping
2125 "
2126
2127 PATHS_LIST="
2128     bindir
2129     datadir
2130     docdir
2131     incdir
2132     libdir
2133     mandir
2134     pkgconfigdir
2135     prefix
2136     shlibdir
2137     install_name_dir
2138 "
2139
2140 CMDLINE_SET="
2141     $PATHS_LIST
2142     ar
2143     arch
2144     as
2145     assert_level
2146     build_suffix
2147     cc
2148     objcc
2149     cpu
2150     cross_prefix
2151     custom_allocator
2152     cxx
2153     dep_cc
2154     doxygen
2155     env
2156     extra_version
2157     gas
2158     host_cc
2159     host_cflags
2160     host_ld
2161     host_ldflags
2162     host_libs
2163     host_os
2164     install
2165     ld
2166     ln_s
2167     logfile
2168     malloc_prefix
2169     nm
2170     optflags
2171     pkg_config
2172     pkg_config_flags
2173     progs_suffix
2174     random_seed
2175     ranlib
2176     samples
2177     strip
2178     sws_max_filter_size
2179     sysinclude
2180     sysroot
2181     target_exec
2182     target_os
2183     target_path
2184     target_samples
2185     tempprefix
2186     toolchain
2187     valgrind
2188     yasmexe
2189 "
2190
2191 CMDLINE_APPEND="
2192     extra_cflags
2193     extra_cxxflags
2194     extra_objcflags
2195     host_cppflags
2196 "
2197
2198 # code dependency declarations
2199
2200 # architecture extensions
2201
2202 armv5te_deps="arm"
2203 armv6_deps="arm"
2204 armv6t2_deps="arm"
2205 armv8_deps="aarch64"
2206 neon_deps_any="aarch64 arm"
2207 intrinsics_neon_deps="neon"
2208 vfp_deps_any="aarch64 arm"
2209 vfpv3_deps="vfp"
2210 setend_deps="arm"
2211
2212 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2213
2214 mipsfpu_deps="mips"
2215 mipsdsp_deps="mips"
2216 mipsdspr2_deps="mips"
2217 mips32r2_deps="mips"
2218 mips32r5_deps="mips"
2219 mips32r6_deps="mips"
2220 mips64r2_deps="mips"
2221 mips64r6_deps="mips"
2222 msa_deps="mipsfpu"
2223 mmi_deps="mips"
2224
2225 altivec_deps="ppc"
2226 dcbzl_deps="ppc"
2227 ldbrx_deps="ppc"
2228 ppc4xx_deps="ppc"
2229 vsx_deps="altivec"
2230 power8_deps="vsx"
2231
2232 cpunop_deps="i686"
2233 x86_64_select="i686"
2234 x86_64_suggest="fast_cmov"
2235
2236 amd3dnow_deps="mmx"
2237 amd3dnowext_deps="amd3dnow"
2238 i686_deps="x86"
2239 mmx_deps="x86"
2240 mmxext_deps="mmx"
2241 sse_deps="mmxext"
2242 sse2_deps="sse"
2243 sse3_deps="sse2"
2244 ssse3_deps="sse3"
2245 sse4_deps="ssse3"
2246 sse42_deps="sse4"
2247 aesni_deps="sse42"
2248 avx_deps="sse42"
2249 xop_deps="avx"
2250 fma3_deps="avx"
2251 fma4_deps="avx"
2252 avx2_deps="avx"
2253
2254 mmx_external_deps="yasm"
2255 mmx_inline_deps="inline_asm"
2256 mmx_suggest="mmx_external mmx_inline"
2257
2258 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2259     eval dep=\$${ext}_deps
2260     eval ${ext}_external_deps='"${dep}_external"'
2261     eval ${ext}_inline_deps='"${dep}_inline"'
2262     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2263 done
2264
2265 aligned_stack_if_any="aarch64 ppc x86"
2266 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2267 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2268 fast_unaligned_if_any="aarch64 ppc x86"
2269 simd_align_16_if_any="altivec neon sse"
2270
2271 # system capabilities
2272 symver_if_any="symver_asm_label symver_gnu_asm"
2273 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2274
2275 # threading support
2276 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2277 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2278 atomics_win32_if="MemoryBarrier"
2279 atomics_native_if_any="$ATOMICS_LIST"
2280 w32threads_deps="atomics_native"
2281 threads_if_any="$THREADS_LIST"
2282
2283 # subsystems
2284 dct_select="rdft"
2285 dirac_parse_select="golomb"
2286 error_resilience_select="me_cmp"
2287 faandct_deps="faan fdctdsp"
2288 faanidct_deps="faan idctdsp"
2289 h264dsp_select="startcode"
2290 frame_thread_encoder_deps="encoders threads"
2291 intrax8_select="blockdsp idctdsp"
2292 mdct_select="fft"
2293 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2294 mpeg_er_select="error_resilience"
2295 mpegaudio_select="mpegaudiodsp"
2296 mpegaudiodsp_select="dct"
2297 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2298 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2299 vc1dsp_select="h264chroma qpeldsp startcode"
2300 rdft_select="fft"
2301
2302 # decoders / encoders
2303 aac_decoder_select="imdct15 mdct sinewin"
2304 aac_fixed_decoder_select="mdct sinewin"
2305 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2306 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2307 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2308 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2309 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2310 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2311 adpcm_g722_decoder_select="g722dsp"
2312 adpcm_g722_encoder_select="g722dsp"
2313 aic_decoder_select="golomb idctdsp"
2314 alac_encoder_select="lpc"
2315 als_decoder_select="bswapdsp"
2316 amrnb_decoder_select="lsp"
2317 amrwb_decoder_select="lsp"
2318 amv_decoder_select="sp5x_decoder exif"
2319 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2320 ape_decoder_select="bswapdsp llauddsp"
2321 apng_decoder_select="zlib"
2322 apng_encoder_select="huffyuvencdsp zlib"
2323 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2324 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2325 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2326 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2327 atrac1_decoder_select="mdct sinewin"
2328 atrac3_decoder_select="mdct"
2329 atrac3p_decoder_select="mdct sinewin"
2330 avrn_decoder_select="exif jpegtables"
2331 bink_decoder_select="blockdsp hpeldsp"
2332 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2333 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2334 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2335 cllc_decoder_select="bswapdsp"
2336 comfortnoise_encoder_select="lpc"
2337 cook_decoder_select="audiodsp mdct sinewin"
2338 cscd_decoder_select="lzo"
2339 cscd_decoder_suggest="zlib"
2340 dca_decoder_select="mdct"
2341 dds_decoder_select="texturedsp"
2342 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2343 dnxhd_decoder_select="blockdsp idctdsp"
2344 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2345 dvvideo_decoder_select="dvprofile idctdsp"
2346 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2347 dxa_decoder_select="zlib"
2348 dxv_decoder_select="lzf texturedsp"
2349 eac3_decoder_select="ac3_decoder"
2350 eac3_encoder_select="ac3_encoder"
2351 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2352 eatgq_decoder_select="aandcttables"
2353 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2354 exr_decoder_select="zlib"
2355 ffv1_decoder_select="golomb rangecoder"
2356 ffv1_encoder_select="rangecoder"
2357 ffvhuff_decoder_select="huffyuv_decoder"
2358 ffvhuff_encoder_select="huffyuv_encoder"
2359 fic_decoder_select="golomb"
2360 flac_decoder_select="flacdsp golomb"
2361 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2362 flashsv2_decoder_select="zlib"
2363 flashsv2_encoder_select="zlib"
2364 flashsv_decoder_select="zlib"
2365 flashsv_encoder_select="zlib"
2366 flv_decoder_select="h263_decoder"
2367 flv_encoder_select="h263_encoder"
2368 fourxm_decoder_select="blockdsp bswapdsp"
2369 fraps_decoder_select="bswapdsp huffman"
2370 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2371 g729_decoder_select="audiodsp"
2372 h261_decoder_select="mpegvideo"
2373 h261_encoder_select="aandcttables mpegvideoenc"
2374 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2375 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2376 h263i_decoder_select="h263_decoder"
2377 h263p_decoder_select="h263_decoder"
2378 h263p_encoder_select="h263_encoder"
2379 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2380 h264_decoder_suggest="error_resilience"
2381 hap_decoder_select="snappy texturedsp"
2382 hap_encoder_deps="libsnappy"
2383 hap_encoder_select="texturedspenc"
2384 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2385 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2386 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2387 iac_decoder_select="imc_decoder"
2388 imc_decoder_select="bswapdsp fft mdct sinewin"
2389 indeo3_decoder_select="hpeldsp"
2390 indeo4_decoder_select="ividsp"
2391 indeo5_decoder_select="ividsp"
2392 interplay_video_decoder_select="hpeldsp"
2393 jpegls_decoder_select="golomb mjpeg_decoder"
2394 jpegls_encoder_select="golomb"
2395 jv_decoder_select="blockdsp"
2396 lagarith_decoder_select="huffyuvdsp"
2397 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2398 loco_decoder_select="golomb"
2399 magicyuv_decoder_select="huffyuvdsp"
2400 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2401 metasound_decoder_select="lsp mdct sinewin"
2402 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2403 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2404 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2405 mjpegb_decoder_select="mjpeg_decoder"
2406 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2407 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2408 mlp_decoder_select="mlp_parser"
2409 motionpixels_decoder_select="bswapdsp"
2410 mp1_decoder_select="mpegaudio"
2411 mp1float_decoder_select="mpegaudio"
2412 mp2_decoder_select="mpegaudio"
2413 mp2float_decoder_select="mpegaudio"
2414 mp3_decoder_select="mpegaudio"
2415 mp3adu_decoder_select="mpegaudio"
2416 mp3adufloat_decoder_select="mpegaudio"
2417 mp3float_decoder_select="mpegaudio"
2418 mp3on4_decoder_select="mpegaudio"
2419 mp3on4float_decoder_select="mpegaudio"
2420 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2421 mpc8_decoder_select="mpegaudiodsp"
2422 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2423 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2424 mpegvideo_decoder_select="mpegvideo"
2425 mpeg1video_decoder_select="mpegvideo"
2426 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2427 mpeg2video_decoder_select="mpegvideo"
2428 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2429 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2430 mpeg4_encoder_select="h263_encoder"
2431 msa1_decoder_select="mss34dsp"
2432 msmpeg4v1_decoder_select="h263_decoder"
2433 msmpeg4v2_decoder_select="h263_decoder"
2434 msmpeg4v2_encoder_select="h263_encoder"
2435 msmpeg4v3_decoder_select="h263_decoder"
2436 msmpeg4v3_encoder_select="h263_encoder"
2437 mss2_decoder_select="vc1_decoder mpegvideo"
2438 mts2_decoder_select="mss34dsp"
2439 mxpeg_decoder_select="mjpeg_decoder"
2440 nellymoser_decoder_select="mdct sinewin"
2441 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2442 nuv_decoder_select="idctdsp lzo"
2443 on2avc_decoder_select="mdct"
2444 opus_decoder_deps="swresample"
2445 opus_decoder_select="imdct15"
2446 png_decoder_select="zlib"
2447 png_encoder_select="huffyuvencdsp zlib"
2448 prores_decoder_select="blockdsp idctdsp"
2449 prores_encoder_select="fdctdsp"
2450 qcelp_decoder_select="lsp"
2451 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2452 ra_144_decoder_select="audiodsp"
2453 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2454 ralf_decoder_select="golomb"
2455 rawvideo_decoder_select="bswapdsp"
2456 rscc_decoder_select="zlib"
2457 rtjpeg_decoder_select="me_cmp"
2458 rv10_decoder_select="h263_decoder"
2459 rv10_encoder_select="h263_encoder"
2460 rv20_decoder_select="h263_decoder"
2461 rv20_encoder_select="h263_encoder"
2462 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2463 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2464 screenpresso_decoder_select="zlib"
2465 shorten_decoder_select="golomb"
2466 sipr_decoder_select="lsp"
2467 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2468 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2469 sonic_decoder_select="golomb rangecoder"
2470 sonic_encoder_select="golomb rangecoder"
2471 sonic_ls_encoder_select="golomb rangecoder"
2472 sp5x_decoder_select="mjpeg_decoder"
2473 svq1_decoder_select="hpeldsp"
2474 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2475 svq3_decoder_select="golomb h264dsp h264pred hpeldsp tpeldsp videodsp"
2476 svq3_decoder_suggest="zlib"
2477 tak_decoder_select="audiodsp"
2478 tdsc_decoder_select="zlib mjpeg_decoder"
2479 theora_decoder_select="vp3_decoder"
2480 thp_decoder_select="mjpeg_decoder"
2481 tiff_decoder_suggest="zlib lzma"
2482 tiff_encoder_suggest="zlib"
2483 truehd_decoder_select="mlp_parser"
2484 truemotion2_decoder_select="bswapdsp"
2485 truespeech_decoder_select="bswapdsp"
2486 tscc_decoder_select="zlib"
2487 twinvq_decoder_select="mdct lsp sinewin"
2488 txd_decoder_select="texturedsp"
2489 utvideo_decoder_select="bswapdsp"
2490 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2491 vble_decoder_select="huffyuvdsp"
2492 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2493 vc1_qsv_decoder_deps="libmfx"
2494 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2495 vc1image_decoder_select="vc1_decoder"
2496 vorbis_decoder_select="mdct"
2497 vorbis_encoder_select="mdct"
2498 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2499 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2500 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2501 vp6a_decoder_select="vp6_decoder"
2502 vp6f_decoder_select="vp6_decoder"
2503 vp7_decoder_select="h264pred videodsp vp8dsp"
2504 vp8_decoder_select="h264pred videodsp vp8dsp"
2505 vp9_decoder_select="videodsp vp9_parser"
2506 webp_decoder_select="vp8_decoder exif"
2507 wmalossless_decoder_select="llauddsp"
2508 wmapro_decoder_select="mdct sinewin wma_freqs"
2509 wmav1_decoder_select="mdct sinewin wma_freqs"
2510 wmav1_encoder_select="mdct sinewin wma_freqs"
2511 wmav2_decoder_select="mdct sinewin wma_freqs"
2512 wmav2_encoder_select="mdct sinewin wma_freqs"
2513 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2514 wmv1_decoder_select="h263_decoder"
2515 wmv1_encoder_select="h263_encoder"
2516 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2517 wmv2_encoder_select="h263_encoder wmv2dsp"
2518 wmv3_decoder_select="vc1_decoder"
2519 wmv3image_decoder_select="wmv3_decoder"
2520 xma1_decoder_select="wmapro_decoder"
2521 xma2_decoder_select="wmapro_decoder"
2522 zerocodec_decoder_select="zlib"
2523 zlib_decoder_select="zlib"
2524 zlib_encoder_select="zlib"
2525 zmbv_decoder_select="zlib"
2526 zmbv_encoder_select="zlib"
2527
2528 # platform codecs
2529 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2530 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2531
2532 # hardware accelerators
2533 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2534 cuvid_deps="cuda"
2535 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2536 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2537 vaapi_deps="va_va_h"
2538 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2539 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2540 vda_deps="vda_framework pthreads"
2541 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2542 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2543 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2544 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2545 xvmc_deps="X11_extensions_XvMClib_h"
2546
2547 h263_vaapi_hwaccel_deps="vaapi"
2548 h263_vaapi_hwaccel_select="h263_decoder"
2549 h263_videotoolbox_hwaccel_deps="videotoolbox"
2550 h263_videotoolbox_hwaccel_select="h263_decoder"
2551 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2552 h264_cuvid_hwaccel_deps="cuda cuvid CUVIDH264PICPARAMS"
2553 h264_d3d11va_hwaccel_deps="d3d11va"
2554 h264_d3d11va_hwaccel_select="h264_decoder"
2555 h264_dxva2_hwaccel_deps="dxva2"
2556 h264_dxva2_hwaccel_select="h264_decoder"
2557 h264_mediacodec_decoder_deps="mediacodec"
2558 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2559 h264_mmal_decoder_deps="mmal"
2560 h264_mmal_decoder_select="mmal"
2561 h264_mmal_hwaccel_deps="mmal"
2562 h264_omx_encoder_deps="omx"
2563 h264_qsv_hwaccel_deps="libmfx"
2564 h264_vaapi_hwaccel_deps="vaapi"
2565 h264_vaapi_hwaccel_select="h264_decoder"
2566 h264_vda_decoder_deps="vda"
2567 h264_vda_decoder_select="h264_decoder"
2568 h264_vda_hwaccel_deps="vda"
2569 h264_vda_hwaccel_select="h264_decoder"
2570 h264_vda_old_hwaccel_deps="vda"
2571 h264_vda_old_hwaccel_select="h264_decoder"
2572 h264_vdpau_decoder_deps="vdpau"
2573 h264_vdpau_decoder_select="h264_decoder"
2574 h264_vdpau_hwaccel_deps="vdpau"
2575 h264_vdpau_hwaccel_select="h264_decoder"
2576 h264_videotoolbox_hwaccel_deps="videotoolbox"
2577 h264_videotoolbox_hwaccel_select="h264_decoder"
2578 hevc_cuvid_hwaccel_deps="cuda cuvid CUVIDHEVCPICPARAMS"
2579 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2580 hevc_d3d11va_hwaccel_select="hevc_decoder"
2581 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2582 hevc_dxva2_hwaccel_select="hevc_decoder"
2583 hevc_qsv_hwaccel_deps="libmfx"
2584 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2585 hevc_vaapi_hwaccel_select="hevc_decoder"
2586 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2587 hevc_vdpau_hwaccel_select="hevc_decoder"
2588 mpeg_vdpau_decoder_deps="vdpau"
2589 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2590 mpeg_xvmc_hwaccel_deps="xvmc"
2591 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2592 mpeg1_vdpau_decoder_deps="vdpau"
2593 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2594 mpeg1_vdpau_hwaccel_deps="vdpau"
2595 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2596 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2597 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2598 mpeg1_xvmc_hwaccel_deps="xvmc"
2599 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2600 mpeg2_crystalhd_decoder_select="crystalhd"
2601 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2602 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2603 mpeg2_dxva2_hwaccel_deps="dxva2"
2604 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2605 mpeg2_mmal_decoder_deps="mmal"
2606 mpeg2_mmal_decoder_select="mmal"
2607 mpeg2_mmal_hwaccel_deps="mmal"
2608 mpeg2_qsv_hwaccel_deps="libmfx"
2609 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2610 mpeg2_vaapi_hwaccel_deps="vaapi"
2611 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2612 mpeg2_vdpau_hwaccel_deps="vdpau"
2613 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2614 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2615 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2616 mpeg2_xvmc_hwaccel_deps="xvmc"
2617 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2618 mpeg4_crystalhd_decoder_select="crystalhd"
2619 mpeg4_mmal_decoder_deps="mmal"
2620 mpeg4_mmal_decoder_select="mmal"
2621 mpeg4_mmal_hwaccel_deps="mmal"
2622 mpeg4_omx_encoder_deps="omx"
2623 mpeg4_vaapi_hwaccel_deps="vaapi"
2624 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2625 mpeg4_vdpau_decoder_deps="vdpau"
2626 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2627 mpeg4_vdpau_hwaccel_deps="vdpau"
2628 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2629 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2630 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2631 msmpeg4_crystalhd_decoder_select="crystalhd"
2632 vc1_crystalhd_decoder_select="crystalhd"
2633 vc1_cuvid_hwaccel_deps="cuda cuvid CUVIDVC1PICPARAMS"
2634 vc1_d3d11va_hwaccel_deps="d3d11va"
2635 vc1_d3d11va_hwaccel_select="vc1_decoder"
2636 vc1_dxva2_hwaccel_deps="dxva2"
2637 vc1_dxva2_hwaccel_select="vc1_decoder"
2638 vc1_mmal_decoder_deps="mmal"
2639 vc1_mmal_decoder_select="mmal"
2640 vc1_mmal_hwaccel_deps="mmal"
2641 vc1_qsv_hwaccel_deps="libmfx"
2642 vc1_qsv_hwaccel_select="qsvdec_vc1"
2643 vc1_vaapi_hwaccel_deps="vaapi"
2644 vc1_vaapi_hwaccel_select="vc1_decoder"
2645 vc1_vdpau_decoder_deps="vdpau"
2646 vc1_vdpau_decoder_select="vc1_decoder"
2647 vc1_vdpau_hwaccel_deps="vdpau"
2648 vc1_vdpau_hwaccel_select="vc1_decoder"
2649 vp8_cuvid_hwaccel_deps="cuda cuvid CUVIDVP9PICPARAMS"
2650 vp9_cuvid_hwaccel_deps="cuda cuvid CUVIDVP9PICPARAMS"
2651 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2652 vp9_d3d11va_hwaccel_select="vp9_decoder"
2653 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2654 vp9_dxva2_hwaccel_select="vp9_decoder"
2655 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9"
2656 vp9_vaapi_hwaccel_select="vp9_decoder"
2657 wmv3_crystalhd_decoder_select="crystalhd"
2658 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2659 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2660 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2661 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2662 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2663
2664 # hardware-accelerated codecs
2665 omx_deps="dlopen pthreads"
2666 omx_extralibs='$ldl'
2667 qsvdec_select="qsv"
2668 qsvenc_select="qsv"
2669 vaapi_encode_deps="vaapi"
2670
2671 hwupload_cuda_filter_deps="cuda"
2672 scale_npp_filter_deps="cuda libnpp"
2673
2674 nvenc_encoder_deps="nvenc"
2675 h264_cuvid_decoder_deps="cuda cuvid CUVIDH264PICPARAMS"
2676 h264_cuvid_decoder_select="h264_mp4toannexb_bsf h264_cuvid_hwaccel"
2677 h264_nvenc_encoder_deps="nvenc"
2678 h264_qsv_decoder_deps="libmfx"
2679 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2680 h264_qsv_encoder_deps="libmfx"
2681 h264_qsv_encoder_select="qsvenc"
2682 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2683 h264_vaapi_encoder_select="vaapi_encode golomb"
2684
2685 hevc_cuvid_decoder_deps="cuda cuvid CUVIDHEVCPICPARAMS"
2686 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf hevc_cuvid_hwaccel"
2687 hevc_nvenc_encoder_deps="nvenc"
2688 hevc_qsv_decoder_deps="libmfx"
2689 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2690 hevc_qsv_encoder_deps="libmfx"
2691 hevc_qsv_encoder_select="qsvenc"
2692 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2693 hevc_vaapi_encoder_select="vaapi_encode golomb"
2694 mpeg2_qsv_decoder_deps="libmfx"
2695 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2696 mpeg2_qsv_encoder_deps="libmfx"
2697 mpeg2_qsv_encoder_select="qsvenc"
2698 nvenc_h264_encoder_deps="nvenc"
2699 nvenc_hevc_encoder_deps="nvenc"
2700
2701 vc1_cuvid_decoder_deps="cuda cuvid CUVIDVC1PICPARAMS"
2702 vc1_cuvid_decoder_select="vc1_cuvid_hwaccel"
2703 vp8_cuvid_decoder_deps="cuda cuvid CUVIDVP9PICPARAMS"
2704 vp8_cuvid_decoder_select="vp8_cuvid_hwaccel"
2705 vp9_cuvid_decoder_deps="cuda cuvid CUVIDVP9PICPARAMS"
2706 vp9_cuvid_decoder_select="vp9_cuvid_hwaccel"
2707
2708 # parsers
2709 h264_parser_select="golomb h264dsp"
2710 hevc_parser_select="golomb"
2711 mpegvideo_parser_select="mpegvideo"
2712 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2713 vc1_parser_select="vc1dsp"
2714
2715 # bitstream_filters
2716 mjpeg2jpeg_bsf_select="jpegtables"
2717
2718 # external libraries
2719 aac_at_decoder_deps="audiotoolbox"
2720 ac3_at_decoder_deps="audiotoolbox"
2721 ac3_at_decoder_select="ac3_parser"
2722 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2723 alac_at_decoder_deps="audiotoolbox"
2724 amr_nb_at_decoder_deps="audiotoolbox"
2725 eac3_at_decoder_deps="audiotoolbox"
2726 eac3_at_decoder_select="ac3_parser"
2727 gsm_ms_at_decoder_deps="audiotoolbox"
2728 ilbc_at_decoder_deps="audiotoolbox"
2729 mp1_at_decoder_deps="audiotoolbox"
2730 mp2_at_decoder_deps="audiotoolbox"
2731 mp3_at_decoder_deps="audiotoolbox"
2732 pcm_alaw_at_decoder_deps="audiotoolbox"
2733 pcm_mulaw_at_decoder_deps="audiotoolbox"
2734 qdmc_at_decoder_deps="audiotoolbox"
2735 qdm2_at_decoder_deps="audiotoolbox"
2736 aac_at_encoder_deps="audiotoolbox"
2737 aac_at_encoder_select="audio_frame_queue"
2738 alac_at_encoder_deps="audiotoolbox"
2739 alac_at_encoder_select="audio_frame_queue"
2740 ilbc_at_encoder_deps="audiotoolbox"
2741 ilbc_at_encoder_select="audio_frame_queue"
2742 pcm_alaw_at_encoder_deps="audiotoolbox"
2743 pcm_alaw_at_encoder_select="audio_frame_queue"
2744 pcm_mulaw_at_encoder_deps="audiotoolbox"
2745 pcm_mulaw_at_encoder_select="audio_frame_queue"
2746 chromaprint_muxer_deps="chromaprint"
2747 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2748 libcelt_decoder_deps="libcelt"
2749 libfaac_encoder_deps="libfaac"
2750 libfaac_encoder_select="audio_frame_queue"
2751 libfdk_aac_decoder_deps="libfdk_aac"
2752 libfdk_aac_encoder_deps="libfdk_aac"
2753 libfdk_aac_encoder_select="audio_frame_queue"
2754 libgme_demuxer_deps="libgme"
2755 libgsm_decoder_deps="libgsm"
2756 libgsm_encoder_deps="libgsm"
2757 libgsm_ms_decoder_deps="libgsm"
2758 libgsm_ms_encoder_deps="libgsm"
2759 libilbc_decoder_deps="libilbc"
2760 libilbc_encoder_deps="libilbc"
2761 libkvazaar_encoder_deps="libkvazaar"
2762 libmodplug_demuxer_deps="libmodplug"
2763 libmp3lame_encoder_deps="libmp3lame"
2764 libmp3lame_encoder_select="audio_frame_queue"
2765 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2766 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2767 libopencore_amrnb_encoder_select="audio_frame_queue"
2768 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2769 libopenh264_encoder_deps="libopenh264"
2770 libopenjpeg_decoder_deps="libopenjpeg"
2771 libopenjpeg_encoder_deps="libopenjpeg"
2772 libopus_decoder_deps="libopus"
2773 libopus_encoder_deps="libopus"
2774 libopus_encoder_select="audio_frame_queue"
2775 libschroedinger_decoder_deps="libschroedinger"
2776 libschroedinger_encoder_deps="libschroedinger"
2777 libshine_encoder_deps="libshine"
2778 libshine_encoder_select="audio_frame_queue"
2779 libspeex_decoder_deps="libspeex"
2780 libspeex_encoder_deps="libspeex"
2781 libspeex_encoder_select="audio_frame_queue"
2782 libtheora_encoder_deps="libtheora"
2783 libtwolame_encoder_deps="libtwolame"
2784 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2785 libvorbis_decoder_deps="libvorbis"
2786 libvorbis_encoder_deps="libvorbis"
2787 libvorbis_encoder_select="audio_frame_queue"
2788 libvpx_vp8_decoder_deps="libvpx"
2789 libvpx_vp8_encoder_deps="libvpx"
2790 libvpx_vp9_decoder_deps="libvpx"
2791 libvpx_vp9_encoder_deps="libvpx"
2792 libwavpack_encoder_deps="libwavpack"
2793 libwebp_encoder_deps="libwebp"
2794 libwebp_anim_encoder_deps="libwebp"
2795 libx262_encoder_deps="libx262"
2796 libx264_encoder_deps="libx264"
2797 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2798 libx264rgb_encoder_select="libx264_encoder"
2799 libx265_encoder_deps="libx265"
2800 libxavs_encoder_deps="libxavs"
2801 libxvid_encoder_deps="libxvid"
2802 libzvbi_teletext_decoder_deps="libzvbi"
2803 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2804 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2805 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2806 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2807 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2808
2809 # demuxers / muxers
2810 ac3_demuxer_select="ac3_parser"
2811 asf_demuxer_select="riffdec"
2812 asf_o_demuxer_select="riffdec"
2813 asf_muxer_select="riffenc"
2814 asf_stream_muxer_select="asf_muxer"
2815 avi_demuxer_select="iso_media riffdec exif"
2816 avi_muxer_select="riffenc"
2817 avisynth_demuxer_deps="avisynth"
2818 avisynth_demuxer_select="riffdec"
2819 caf_demuxer_select="iso_media riffdec"
2820 dash_muxer_select="mp4_muxer"
2821 dirac_demuxer_select="dirac_parser"
2822 dts_demuxer_select="dca_parser"
2823 dtshd_demuxer_select="dca_parser"
2824 dv_demuxer_select="dvprofile"
2825 dv_muxer_select="dvprofile"
2826 dxa_demuxer_select="riffdec"
2827 eac3_demuxer_select="ac3_parser"
2828 f4v_muxer_select="mov_muxer"
2829 flac_demuxer_select="flac_parser"
2830 hds_muxer_select="flv_muxer"
2831 hls_muxer_select="mpegts_muxer"
2832 image2_alias_pix_demuxer_select="image2_demuxer"
2833 image2_brender_pix_demuxer_select="image2_demuxer"
2834 ipod_muxer_select="mov_muxer"
2835 ismv_muxer_select="mov_muxer"
2836 libnut_demuxer_deps="libnut"
2837 libnut_muxer_deps="libnut"
2838 matroska_audio_muxer_select="matroska_muxer"
2839 matroska_demuxer_select="iso_media riffdec"
2840 matroska_demuxer_suggest="bzlib lzo zlib"
2841 matroska_muxer_select="iso_media riffenc"
2842 mmf_muxer_select="riffenc"
2843 mov_demuxer_select="iso_media riffdec"
2844 mov_demuxer_suggest="zlib"
2845 mov_muxer_select="iso_media riffenc rtpenc_chain"
2846 mp3_demuxer_select="mpegaudio_parser"
2847 mp4_muxer_select="mov_muxer"
2848 mpegts_demuxer_select="iso_media"
2849 mpegts_muxer_select="adts_muxer latm_muxer"
2850 mpegtsraw_demuxer_select="mpegts_demuxer"
2851 mxf_d10_muxer_select="mxf_muxer"
2852 mxf_opatom_muxer_select="mxf_muxer"
2853 nut_muxer_select="riffenc"
2854 nuv_demuxer_select="riffdec"
2855 oga_muxer_select="ogg_muxer"
2856 ogg_demuxer_select="dirac_parse"
2857 opus_muxer_select="ogg_muxer"
2858 psp_muxer_select="mov_muxer"
2859 rtp_demuxer_select="sdp_demuxer"
2860 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2861 rtsp_demuxer_select="http_protocol rtpdec"
2862 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2863 sap_demuxer_select="sdp_demuxer"
2864 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2865 sdp_demuxer_select="rtpdec"
2866 smoothstreaming_muxer_select="ismv_muxer"
2867 spdif_muxer_select="aac_parser"
2868 spx_muxer_select="ogg_muxer"
2869 swf_demuxer_suggest="zlib"
2870 tak_demuxer_select="tak_parser"
2871 tg2_muxer_select="mov_muxer"
2872 tgp_muxer_select="mov_muxer"
2873 vobsub_demuxer_select="mpegps_demuxer"
2874 w64_demuxer_select="wav_demuxer"
2875 w64_muxer_select="wav_muxer"
2876 wav_demuxer_select="riffdec"
2877 wav_muxer_select="riffenc"
2878 webm_muxer_select="iso_media riffenc"
2879 webm_dash_manifest_demuxer_select="matroska_demuxer"
2880 wtv_demuxer_select="mpegts_demuxer riffdec"
2881 wtv_muxer_select="mpegts_muxer riffenc"
2882 xmv_demuxer_select="riffdec"
2883 xwma_demuxer_select="riffdec"
2884
2885 # indevs / outdevs
2886 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2887 alsa_outdev_deps="alsa_asoundlib_h"
2888 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2889 avfoundation_indev_select="avfoundation"
2890 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2891 caca_outdev_deps="libcaca"
2892 decklink_indev_deps="decklink pthreads"
2893 decklink_indev_extralibs="-lstdc++"
2894 decklink_outdev_deps="decklink pthreads"
2895 decklink_outdev_extralibs="-lstdc++"
2896 dshow_indev_deps="IBaseFilter"
2897 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2898 dv1394_indev_deps="dv1394"
2899 dv1394_indev_select="dv_demuxer"
2900 fbdev_indev_deps="linux_fb_h"
2901 fbdev_outdev_deps="linux_fb_h"
2902 gdigrab_indev_deps="CreateDIBSection"
2903 gdigrab_indev_extralibs="-lgdi32"
2904 gdigrab_indev_select="bmp_decoder"
2905 iec61883_indev_deps="libiec61883"
2906 jack_indev_deps="jack_jack_h"
2907 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2908 lavfi_indev_deps="avfilter"
2909 libcdio_indev_deps="libcdio"
2910 libdc1394_indev_deps="libdc1394"
2911 libv4l2_indev_deps="libv4l2"
2912 openal_indev_deps="openal"
2913 opengl_outdev_deps="opengl"
2914 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2915 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2916 pulse_indev_deps="libpulse"
2917 pulse_outdev_deps="libpulse"
2918 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2919 qtkit_indev_select="qtkit"
2920 sdl_outdev_deps="sdl"
2921 sndio_indev_deps="sndio_h"
2922 sndio_outdev_deps="sndio_h"
2923 v4l_indev_deps="linux_videodev_h"
2924 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2925 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2926 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2927 vfwcap_indev_extralibs="-lavicap32"
2928 x11grab_indev_deps="x11grab"
2929 x11grab_xcb_indev_deps="libxcb"
2930 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2931 xv_outdev_extralibs="-lXv -lX11 -lXext"
2932
2933 # protocols
2934 async_protocol_deps="threads"
2935 bluray_protocol_deps="libbluray"
2936 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2937 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2938 ffrtmpcrypt_protocol_select="tcp_protocol"
2939 ffrtmphttp_protocol_deps="!librtmp_protocol"
2940 ffrtmphttp_protocol_select="http_protocol"
2941 ftp_protocol_select="tcp_protocol"
2942 gopher_protocol_select="network"
2943 http_protocol_select="tcp_protocol"
2944 httpproxy_protocol_select="tcp_protocol"
2945 https_protocol_select="tls_protocol"
2946 icecast_protocol_select="http_protocol"
2947 librtmp_protocol_deps="librtmp"
2948 librtmpe_protocol_deps="librtmp"
2949 librtmps_protocol_deps="librtmp"
2950 librtmpt_protocol_deps="librtmp"
2951 librtmpte_protocol_deps="librtmp"
2952 libsmbclient_protocol_deps="libsmbclient gplv3"
2953 libssh_protocol_deps="libssh"
2954 mmsh_protocol_select="http_protocol"
2955 mmst_protocol_select="network"
2956 rtmp_protocol_deps="!librtmp_protocol"
2957 rtmp_protocol_select="tcp_protocol"
2958 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2959 rtmps_protocol_deps="!librtmp_protocol"
2960 rtmps_protocol_select="tls_protocol"
2961 rtmpt_protocol_select="ffrtmphttp_protocol"
2962 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2963 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2964 rtp_protocol_select="udp_protocol"
2965 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
2966 sctp_protocol_select="network"
2967 srtp_protocol_select="rtp_protocol srtp"
2968 tcp_protocol_select="network"
2969 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
2970 tls_gnutls_protocol_select="tcp_protocol"
2971 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
2972 tls_openssl_protocol_select="tcp_protocol"
2973 tls_schannel_protocol_deps="schannel"
2974 tls_schannel_protocol_select="tcp_protocol"
2975 tls_securetransport_protocol_deps="securetransport"
2976 tls_securetransport_protocol_select="tcp_protocol"
2977 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2978 udp_protocol_select="network"
2979 udplite_protocol_select="network"
2980 unix_protocol_deps="sys_un_h"
2981 unix_protocol_select="network"
2982
2983 # filters
2984 afftfilt_filter_deps="avcodec"
2985 afftfilt_filter_select="fft"
2986 amovie_filter_deps="avcodec avformat"
2987 aresample_filter_deps="swresample"
2988 ass_filter_deps="libass"
2989 asyncts_filter_deps="avresample"
2990 atempo_filter_deps="avcodec"
2991 atempo_filter_select="rdft"
2992 azmq_filter_deps="libzmq"
2993 blackframe_filter_deps="gpl"
2994 boxblur_filter_deps="gpl"
2995 bs2b_filter_deps="libbs2b"
2996 colormatrix_filter_deps="gpl"
2997 cover_rect_filter_deps="avcodec avformat gpl"
2998 cropdetect_filter_deps="gpl"
2999 delogo_filter_deps="gpl"
3000 deshake_filter_select="pixelutils"
3001 drawtext_filter_deps="libfreetype"
3002 ebur128_filter_deps="gpl"
3003 eq_filter_deps="gpl"
3004 fftfilt_filter_deps="avcodec"
3005 fftfilt_filter_select="rdft"
3006 find_rect_filter_deps="avcodec avformat gpl"
3007 firequalizer_filter_deps="avcodec"
3008 firequalizer_filter_select="rdft"
3009 flite_filter_deps="libflite"
3010 framerate_filter_select="pixelutils"
3011 frei0r_filter_deps="frei0r dlopen"
3012 frei0r_src_filter_deps="frei0r dlopen"
3013 fspp_filter_deps="gpl"
3014 geq_filter_deps="gpl"
3015 histeq_filter_deps="gpl"
3016 hqdn3d_filter_deps="gpl"
3017 interlace_filter_deps="gpl"
3018 kerndeint_filter_deps="gpl"
3019 ladspa_filter_deps="ladspa dlopen"
3020 loudnorm_filter_deps="libebur128"
3021 mcdeint_filter_deps="avcodec gpl"
3022 movie_filter_deps="avcodec avformat"
3023 mpdecimate_filter_deps="gpl"
3024 mpdecimate_filter_select="pixelutils"
3025 mptestsrc_filter_deps="gpl"
3026 negate_filter_deps="lut_filter"
3027 nnedi_filter_deps="gpl"
3028 ocr_filter_deps="libtesseract"
3029 ocv_filter_deps="libopencv"
3030 owdenoise_filter_deps="gpl"
3031 pan_filter_deps="swresample"
3032 perspective_filter_deps="gpl"
3033 phase_filter_deps="gpl"
3034 pp7_filter_deps="gpl"
3035 pp_filter_deps="gpl postproc"
3036 pullup_filter_deps="gpl"
3037 removelogo_filter_deps="avcodec avformat swscale"
3038 repeatfields_filter_deps="gpl"
3039 resample_filter_deps="avresample"
3040 rubberband_filter_deps="librubberband"
3041 sab_filter_deps="gpl swscale"
3042 scale2ref_filter_deps="swscale"
3043 scale_filter_deps="swscale"
3044 select_filter_select="pixelutils"
3045 showcqt_filter_deps="avcodec avformat swscale"
3046 showcqt_filter_select="fft"
3047 showfreqs_filter_deps="avcodec"
3048 showfreqs_filter_select="fft"
3049 showspectrum_filter_deps="avcodec"
3050 showspectrum_filter_select="fft"
3051 showspectrumpic_filter_deps="avcodec"
3052 showspectrumpic_filter_select="fft"
3053 smartblur_filter_deps="gpl swscale"
3054 sofalizer_filter_deps="netcdf avcodec"
3055 sofalizer_filter_select="fft"
3056 spectrumsynth_filter_deps="avcodec"
3057 spectrumsynth_filter_select="fft"
3058 spp_filter_deps="gpl avcodec"
3059 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3060 stereo3d_filter_deps="gpl"
3061 subtitles_filter_deps="avformat avcodec libass"
3062 super2xsai_filter_deps="gpl"
3063 pixfmts_super2xsai_test_deps="super2xsai_filter"
3064 tinterlace_filter_deps="gpl"
3065 tinterlace_merge_test_deps="tinterlace_filter"
3066 tinterlace_pad_test_deps="tinterlace_filter"
3067 uspp_filter_deps="gpl avcodec"
3068 vidstabdetect_filter_deps="libvidstab"
3069 vidstabtransform_filter_deps="libvidstab"
3070 zmq_filter_deps="libzmq"
3071 zoompan_filter_deps="swscale"
3072 zscale_filter_deps="libzimg"
3073 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3074
3075 # examples
3076 avcodec_example_deps="avcodec avutil"
3077 avio_dir_cmd="avformat avutil"
3078 avio_reading="avformat avcodec avutil"
3079 decoding_encoding_example_deps="avcodec avformat avutil"
3080 demuxing_decoding_example_deps="avcodec avformat avutil"
3081 extract_mvs_example_deps="avcodec avformat avutil"
3082 filter_audio_example_deps="avfilter avutil"
3083 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3084 filtering_video_example_deps="avfilter avcodec avformat avutil"
3085 metadata_example_deps="avformat avutil"
3086 muxing_example_deps="avcodec avformat avutil swscale"
3087 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
3088 remuxing_example_deps="avcodec avformat avutil"
3089 resampling_audio_example_deps="avutil swresample"
3090 scaling_video_example_deps="avutil swscale"
3091 transcode_aac_example_deps="avcodec avformat swresample"
3092 transcoding_example_deps="avfilter avcodec avformat avutil"
3093
3094 # libraries, in linking order
3095 avcodec_deps="avutil"
3096 avdevice_deps="avformat avcodec avutil"
3097 avfilter_deps="avutil"
3098 avformat_deps="avcodec avutil"
3099 avresample_deps="avutil"
3100 postproc_deps="avutil gpl"
3101 swresample_deps="avutil"
3102 swscale_deps="avutil"
3103
3104 # programs
3105 ffmpeg_deps="avcodec avfilter avformat swresample"
3106 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3107                null_filter
3108                setpts_filter trim_filter"
3109 ffplay_deps="avcodec avformat swscale swresample sdl"
3110 ffplay_libs='$sdl_libs'
3111 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3112 ffprobe_deps="avcodec avformat"
3113 ffserver_deps="avformat fork sarestart"
3114 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3115
3116 # documentation
3117 podpages_deps="perl"
3118 manpages_deps="perl pod2man"
3119 htmlpages_deps="perl"
3120 htmlpages_deps_any="makeinfo_html texi2html"
3121 txtpages_deps="perl makeinfo"
3122 doc_deps_any="manpages htmlpages podpages txtpages"
3123
3124 # default parameters
3125
3126 logfile="config.log"
3127
3128 # installation paths
3129 prefix_default="/usr/local"
3130 bindir_default='${prefix}/bin'
3131 datadir_default='${prefix}/share/ffmpeg'
3132 docdir_default='${prefix}/share/doc/ffmpeg'
3133 incdir_default='${prefix}/include'
3134 libdir_default='${prefix}/lib'
3135 mandir_default='${prefix}/share/man'
3136
3137 # toolchain
3138 ar_default="ar"
3139 cc_default="gcc"
3140 cxx_default="g++"
3141 host_cc_default="gcc"
3142 cp_f="cp -f"
3143 doxygen_default="doxygen"
3144 install="install"
3145 ln_s_default="ln -s -f"
3146 nm_default="nm -g"
3147 objformat="elf"
3148 pkg_config_default=pkg-config
3149 ranlib_default="ranlib"
3150 strip_default="strip"
3151 version_script='--version-script'
3152 yasmexe_default="yasm"
3153 windres_default="windres"
3154
3155 # OS
3156 target_os_default=$(tolower $(uname -s))
3157 host_os=$target_os_default
3158
3159 # machine
3160 if test "$target_os_default" = aix; then
3161     arch_default=$(uname -p)
3162     strip_default="strip -X32_64"
3163 else
3164     arch_default=$(uname -m)
3165 fi
3166 cpu="generic"
3167 intrinsics="none"
3168
3169 # configurable options
3170 enable $PROGRAM_LIST
3171 enable $DOCUMENT_LIST
3172 enable $EXAMPLE_LIST
3173 enable $(filter_out avresample $LIBRARY_LIST)
3174 enable stripping
3175
3176 enable asm
3177 enable debug
3178 enable doc
3179 enable faan faandct faanidct
3180 enable optimizations
3181 enable runtime_cpudetect
3182 enable safe_bitstream_reader
3183 enable static
3184 enable swscale_alpha
3185 enable valgrind_backtrace
3186
3187 sws_max_filter_size_default=256
3188 set_default sws_max_filter_size
3189
3190 # Enable platform codecs by default.
3191 enable audiotoolbox
3192
3193 # Enable hwaccels by default.
3194 enable d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3195 enable xlib
3196
3197 enable vda_framework videotoolbox videotoolbox_encoder
3198
3199 # build settings
3200 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3201 LIBPREF="lib"
3202 LIBSUF=".a"
3203 FULLNAME='$(NAME)$(BUILDSUF)'
3204 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3205 SLIBPREF="lib"
3206 SLIBSUF=".so"
3207 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3208 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3209 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3210 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3211 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3212 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3213 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3214
3215 asflags_filter=echo
3216 cflags_filter=echo
3217 ldflags_filter=echo
3218
3219 AS_C='-c'
3220 AS_O='-o $@'
3221 CC_C='-c'
3222 CC_E='-E -o $@'
3223 CC_O='-o $@'
3224 CXX_C='-c'
3225 CXX_O='-o $@'
3226 OBJCC_C='-c'
3227 OBJCC_E='-E -o $@'
3228 OBJCC_O='-o $@'
3229 LD_O='-o $@'
3230 LD_LIB='-l%'
3231 LD_PATH='-L'
3232 HOSTCC_C='-c'
3233 HOSTCC_E='-E -o $@'
3234 HOSTCC_O='-o $@'
3235 HOSTLD_O='-o $@'
3236
3237 host_libs='-lm'
3238 host_cflags_filter=echo
3239 host_ldflags_filter=echo
3240
3241 target_path='$(CURDIR)'
3242
3243 # since the object filename is not given with the -MM flag, the compiler
3244 # is only able to print the basename, and we must add the path ourselves
3245 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3246 DEPFLAGS='-MM'
3247
3248 # find source path
3249 if test -f configure; then
3250     source_path=.
3251 else
3252     source_path=$(cd $(dirname "$0"); pwd)
3253     case "$source_path" in
3254         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3255     esac
3256     test -e "$source_path/config.h" &&
3257         die "Out of tree builds are impossible with config.h in source dir."
3258 fi
3259
3260 for v in "$@"; do
3261     r=${v#*=}
3262     l=${v%"$r"}
3263     r=$(sh_quote "$r")
3264     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3265 done
3266
3267 find_things(){
3268     thing=$1
3269     pattern=$2
3270     file=$source_path/$3
3271     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3272 }
3273
3274 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3275 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3276 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3277 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3278 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3279 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3280 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3281 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3282 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3283
3284 find_things_extern(){
3285     thing=$1
3286     pattern=$2
3287     file=$source_path/$3
3288     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3289 }
3290
3291 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3292 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3293
3294 ALL_COMPONENTS="
3295     $BSF_LIST
3296     $DECODER_LIST
3297     $DEMUXER_LIST
3298     $ENCODER_LIST
3299     $FILTER_LIST
3300     $HWACCEL_LIST
3301     $INDEV_LIST
3302     $MUXER_LIST
3303     $OUTDEV_LIST
3304     $PARSER_LIST
3305     $PROTOCOL_LIST
3306 "
3307
3308 for n in $COMPONENT_LIST; do
3309     v=$(toupper ${n%s})_LIST
3310     eval enable \$$v
3311     eval ${n}_if_any="\$$v"
3312 done
3313
3314 enable $ARCH_EXT_LIST
3315
3316 die_unknown(){
3317     echo "Unknown option \"$1\"."
3318     echo "See $0 --help for available options."
3319     exit 1
3320 }
3321
3322 print_in_columns() {
3323     cols=$(expr $ncols / 24)
3324     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3325 }
3326
3327 show_list() {
3328     suffix=_$1
3329     shift
3330     echo $* | sed s/$suffix//g | print_in_columns
3331     exit 0
3332 }
3333
3334 rand_list(){
3335     IFS=', '
3336     set -- $*
3337     unset IFS
3338     for thing; do
3339         comp=${thing%:*}
3340         prob=${thing#$comp}
3341         prob=${prob#:}
3342         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3343         echo "prob ${prob:-0.5}"
3344         printf '%s\n' $comp
3345     done
3346 }
3347
3348 do_random(){
3349     action=$1
3350     shift
3351     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3352     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3353 }
3354
3355 for opt do
3356     optval="${opt#*=}"
3357     case "$opt" in
3358         --extra-ldflags=*)
3359             add_ldflags $optval
3360         ;;
3361         --extra-ldexeflags=*)
3362             add_ldexeflags $optval
3363         ;;
3364         --extra-ldlibflags=*)
3365             add_ldlibflags $optval
3366         ;;
3367         --extra-libs=*)
3368             add_extralibs $optval
3369         ;;
3370         --disable-devices)
3371             disable $INDEV_LIST $OUTDEV_LIST
3372         ;;
3373         --enable-debug=*)
3374             debuglevel="$optval"
3375         ;;
3376         --disable-programs)
3377             disable $PROGRAM_LIST
3378         ;;
3379         --disable-everything)
3380             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3381         ;;
3382         --disable-all)
3383             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3384             disable $LIBRARY_LIST $PROGRAM_LIST doc
3385             enable avutil
3386         ;;
3387         --enable-random|--disable-random)
3388             action=${opt%%-random}
3389             do_random ${action#--} $COMPONENT_LIST
3390         ;;
3391         --enable-random=*|--disable-random=*)
3392             action=${opt%%-random=*}
3393             do_random ${action#--} $optval
3394         ;;
3395         --enable-*=*|--disable-*=*)
3396             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3397             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3398             eval list=\$$(toupper $thing)_LIST
3399             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3400             list=$(filter "$name" $list)
3401             [ "$list" = "" ] && warn "Option $opt did not match anything"
3402             $action $list
3403         ;;
3404         --enable-?*|--disable-?*)
3405             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3406             if is_in $option $COMPONENT_LIST; then
3407                 test $action = disable && action=unset
3408                 eval $action \$$(toupper ${option%s})_LIST
3409             elif is_in $option $CMDLINE_SELECT; then
3410                 $action $option
3411             else
3412                 die_unknown $opt
3413             fi
3414         ;;
3415         --list-*)
3416             NAME="${opt#--list-}"
3417             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3418             NAME=${NAME%s}
3419             eval show_list $NAME \$$(toupper $NAME)_LIST
3420         ;;
3421         --help|-h) show_help
3422         ;;
3423         --fatal-warnings) enable fatal_warnings
3424         ;;
3425         *)
3426             optname="${opt%%=*}"
3427             optname="${optname#--}"
3428             optname=$(echo "$optname" | sed 's/-/_/g')
3429             if is_in $optname $CMDLINE_SET; then
3430                 eval $optname='$optval'
3431             elif is_in $optname $CMDLINE_APPEND; then
3432                 append $optname "$optval"
3433             else
3434                 die_unknown $opt
3435             fi
3436         ;;
3437     esac
3438 done
3439
3440 for e in $env; do
3441     eval "export $e"
3442 done
3443
3444 disabled logging && logfile=/dev/null
3445
3446 # Disable all the library-specific components if the library itself
3447 # is disabled, see AVCODEC_LIST and following _LIST variables.
3448
3449 disable_components(){
3450     disabled ${1} && disable $(
3451         eval components="\$$(toupper ${1})_COMPONENTS"
3452         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3453     )
3454 }
3455
3456 map 'disable_components $v' $LIBRARY_LIST
3457
3458 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3459 set >> $logfile
3460
3461 test -n "$valgrind" && toolchain="valgrind-memcheck"
3462
3463 case "$toolchain" in
3464     *-asan)
3465         cc_default="${toolchain%-asan}"
3466         add_cflags  -fsanitize=address
3467         add_ldflags -fsanitize=address
3468     ;;
3469     *-msan)
3470         cc_default="${toolchain%-msan}"
3471         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3472         add_ldflags -fsanitize=memory
3473     ;;
3474     *-tsan)
3475         cc_default="${toolchain%-tsan}"
3476         add_cflags  -fsanitize=thread -pie
3477         add_ldflags -fsanitize=thread -pie
3478         case "$toolchain" in
3479             gcc-tsan)
3480                 add_cflags  -fPIC
3481                 add_ldflags -fPIC
3482                 ;;
3483         esac
3484     ;;
3485     *-usan)
3486         cc_default="${toolchain%-usan}"
3487         add_cflags  -fsanitize=undefined
3488         add_ldflags -fsanitize=undefined
3489     ;;
3490     valgrind-*)
3491         target_exec_default="valgrind"
3492         case "$toolchain" in
3493             valgrind-massif)
3494                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3495                 ;;
3496             valgrind-memcheck)
3497                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3498                 ;;
3499         esac
3500     ;;
3501     msvc)
3502         # Check whether the current MSVC version needs the C99 converter.
3503         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3504         # support enough of C99 to build ffmpeg. Default to the new
3505         # behaviour if the regexp was unable to match anything, since this
3506         # successfully parses the version number of existing supported
3507         # versions that require the converter (MSVC 2010 and 2012).
3508         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3509         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3510             cc_default="cl"
3511         else
3512             cc_default="c99wrap cl"
3513         fi
3514         ld_default="$source_path/compat/windows/mslink"
3515         nm_default="dumpbin -symbols"
3516         ar_default="lib"
3517         case "$arch" in
3518         arm*)
3519             as_default="armasm"
3520             ;;
3521         esac
3522         target_os_default="win32"
3523         # Use a relative path for TMPDIR. This makes sure all the
3524         # ffconf temp files are written with a relative path, avoiding
3525         # issues with msys/win32 path conversion for MSVC parameters
3526         # such as -Fo<file> or -out:<file>.
3527         TMPDIR=.
3528     ;;
3529     icl)
3530         cc_default="icl"
3531         ld_default="xilink"
3532         nm_default="dumpbin -symbols"
3533         ar_default="xilib"
3534         target_os_default="win32"
3535         TMPDIR=.
3536     ;;
3537     gcov)
3538         add_cflags  -fprofile-arcs -ftest-coverage
3539         add_ldflags -fprofile-arcs -ftest-coverage
3540     ;;
3541     llvm-cov)
3542         add_cflags -fprofile-arcs -ftest-coverage
3543         add_ldflags --coverage
3544     ;;
3545     hardened)
3546         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3547         add_cflags   -fno-strict-overflow -fstack-protector-all
3548         add_ldflags  -Wl,-z,relro -Wl,-z,now
3549     ;;
3550     ?*)
3551         die "Unknown toolchain $toolchain"
3552     ;;
3553 esac
3554
3555 test -n "$cross_prefix" && enable cross_compile
3556
3557 if enabled cross_compile; then
3558     test -n "$arch" && test -n "$target_os" ||
3559         die "Must specify target arch and OS when cross-compiling"
3560 fi
3561
3562 ar_default="${cross_prefix}${ar_default}"
3563 cc_default="${cross_prefix}${cc_default}"
3564 cxx_default="${cross_prefix}${cxx_default}"
3565 nm_default="${cross_prefix}${nm_default}"
3566 pkg_config_default="${cross_prefix}${pkg_config_default}"
3567 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3568     ranlib_default="${cross_prefix}${ranlib_default} -D"
3569 else
3570     ranlib_default="${cross_prefix}${ranlib_default}"
3571 fi
3572 strip_default="${cross_prefix}${strip_default}"
3573 windres_default="${cross_prefix}${windres_default}"
3574
3575 sysinclude_default="${sysroot}/usr/include"
3576
3577 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3578     target_exec target_os yasmexe
3579 enabled cross_compile || host_cc_default=$cc
3580 set_default host_cc
3581
3582 pkg_config_fail_message=""
3583 if ! $pkg_config --version >/dev/null 2>&1; then
3584     warn "$pkg_config not found, library detection may fail."
3585     pkg_config=false
3586 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3587     pkg_config_fail_message="
3588 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3589 fi
3590
3591 if test $doxygen != $doxygen_default && \
3592   ! $doxygen --version >/dev/null 2>&1; then
3593     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3594 fi
3595
3596 exesuf() {
3597     case $1 in
3598         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3599     esac
3600 }
3601
3602 EXESUF=$(exesuf $target_os)
3603 HOSTEXESUF=$(exesuf $host_os)
3604
3605 # set temporary file name
3606 : ${TMPDIR:=$TEMPDIR}
3607 : ${TMPDIR:=$TMP}
3608 : ${TMPDIR:=/tmp}
3609
3610 if [ -n "$tempprefix" ] ; then
3611     mktemp(){
3612         echo $tempprefix.${HOSTNAME}.${UID}
3613     }
3614 elif ! check_cmd mktemp -u XXXXXX; then
3615     # simple replacement for missing mktemp
3616     # NOT SAFE FOR GENERAL USE
3617     mktemp(){
3618         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3619     }
3620 fi
3621
3622 tmpfile(){
3623     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3624         (set -C; exec > $tmp) 2>/dev/null ||
3625         die "Unable to create temporary file in $TMPDIR."
3626     append TMPFILES $tmp
3627     eval $1=$tmp
3628 }
3629
3630 trap 'rm -f -- $TMPFILES' EXIT
3631
3632 tmpfile TMPASM .asm
3633 tmpfile TMPC   .c
3634 tmpfile TMPCPP .cpp
3635 tmpfile TMPE   $EXESUF
3636 tmpfile TMPH   .h
3637 tmpfile TMPM   .m
3638 tmpfile TMPO   .o
3639 tmpfile TMPS   .S
3640 tmpfile TMPSH  .sh
3641 tmpfile TMPV   .ver
3642
3643 unset -f mktemp
3644
3645 chmod +x $TMPE
3646
3647 # make sure we can execute files in $TMPDIR
3648 cat > $TMPSH 2>> $logfile <<EOF
3649 #! /bin/sh
3650 EOF
3651 chmod +x $TMPSH >> $logfile 2>&1
3652 if ! $TMPSH >> $logfile 2>&1; then
3653     cat <<EOF
3654 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3655 variable to another directory and make sure that it is not mounted noexec.
3656 EOF
3657     die "Sanity test failed."
3658 fi
3659
3660 armasm_flags(){
3661     for flag; do
3662         case $flag in
3663             # Filter out MSVC cl.exe options from cflags that shouldn't
3664             # be passed to gas-preprocessor
3665             -M[TD]*)                                            ;;
3666             *)                  echo $flag                      ;;
3667         esac
3668    done
3669 }
3670
3671 ccc_flags(){
3672     for flag; do
3673         case $flag in
3674             -std=c99)           echo -c99                       ;;
3675             -mcpu=*)            echo -arch ${flag#*=}           ;;
3676             -mieee)             echo -ieee                      ;;
3677             -O*|-fast)          echo $flag                      ;;
3678             -fno-math-errno)    echo -assume nomath_errno       ;;
3679             -g)                 echo -g3                        ;;
3680             -Wall)              echo -msg_enable level2         ;;
3681             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3682             -Wl,*)              echo $flag                      ;;
3683             -f*|-W*)                                            ;;
3684             *)                  echo $flag                      ;;
3685         esac
3686    done
3687 }
3688
3689 cparser_flags(){
3690     for flag; do
3691         case $flag in
3692             -Wno-switch)             echo -Wno-switch-enum ;;
3693             -Wno-format-zero-length) ;;
3694             -Wdisabled-optimization) ;;
3695             -Wno-pointer-sign)       echo -Wno-other ;;
3696             *)                       echo $flag ;;
3697         esac
3698     done
3699 }
3700
3701 msvc_common_flags(){
3702     for flag; do
3703         case $flag in
3704             # In addition to specifying certain flags under the compiler
3705             # specific filters, they must be specified here as well or else the
3706             # generic catch all at the bottom will print the original flag.
3707             -Wall)                ;;
3708             -std=c99)             ;;
3709             # Common flags
3710             -fomit-frame-pointer) ;;
3711             -g)                   echo -Z7 ;;
3712             -fno-math-errno)      ;;
3713             -fno-common)          ;;
3714             -fno-signed-zeros)    ;;
3715             -fPIC)                ;;
3716             -mthumb)              ;;
3717             -march=*)             ;;
3718             -lz)                  echo zlib.lib ;;
3719             -lavifil32)           echo vfw32.lib ;;
3720             -lavicap32)           echo vfw32.lib user32.lib ;;
3721             -lx264)               echo libx264.lib ;;
3722             -l*)                  echo ${flag#-l}.lib ;;
3723             -LARGEADDRESSAWARE)   echo $flag ;;
3724             -L*)                  echo -libpath:${flag#-L} ;;
3725             *)                    echo $flag ;;
3726         esac
3727     done
3728 }
3729
3730 msvc_flags(){
3731     msvc_common_flags "$@"
3732     for flag; do
3733         case $flag in
3734             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3735                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3736                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3737                                        -wd4307 \
3738                                        -wd4273 -wd4554 -wd4701 ;;
3739         esac
3740     done
3741 }
3742
3743 icl_flags(){
3744     msvc_common_flags "$@"
3745     for flag; do
3746         case $flag in
3747             # Despite what Intel's documentation says -Wall, which is supported
3748             # on Windows, does enable remarks so disable them here.
3749             -Wall)                echo $flag -Qdiag-disable:remark ;;
3750             -std=c99)             echo -Qstd=c99 ;;
3751             -flto)                echo -ipo ;;
3752         esac
3753     done
3754 }
3755
3756 icc_flags(){
3757     for flag; do
3758         case $flag in
3759             -flto)                echo -ipo ;;
3760             *)                    echo $flag ;;
3761         esac
3762     done
3763 }
3764
3765 pgi_flags(){
3766     for flag; do
3767         case $flag in
3768             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3769             -fomit-frame-pointer) echo -Mnoframe ;;
3770             -g)                   echo -gopt ;;
3771             *)                    echo $flag ;;
3772         esac
3773     done
3774 }
3775
3776 suncc_flags(){
3777     for flag; do
3778         case $flag in
3779             -march=*|-mcpu=*)
3780                 case "${flag#*=}" in
3781                     native)                   echo -xtarget=native       ;;
3782                     v9|niagara)               echo -xarch=sparc          ;;
3783                     ultrasparc)               echo -xarch=sparcvis       ;;
3784                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3785                     i586|pentium)             echo -xchip=pentium        ;;
3786                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3787                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3788                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3789                     pentium4*)          echo -xtarget=pentium4           ;;
3790                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3791                     *-sse3)             echo -xarch=sse3                 ;;
3792                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3793                     bonnell)                   echo -xarch=ssse3         ;;
3794                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3795                     westmere)                  echo -xtarget=westmere    ;;
3796                     silvermont)                echo -xarch=sse4_2        ;;
3797                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3798                     core-avx*|ivybridge|haswell|broadwell)
3799                                                echo -xarch=avx           ;;
3800                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3801                     btver1)                    echo -xarch=amdsse4a      ;;
3802                     btver2|bdver*)             echo -xarch=avx           ;;
3803                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3804                     k8|opteron|athlon64|athlon-fx)
3805                                                echo -xarch=sse2a         ;;
3806                     athlon*)                   echo -xarch=pentium_proa  ;;
3807                 esac
3808                 ;;
3809             -std=c99)             echo -xc99              ;;
3810             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3811             -fPIC)                echo -KPIC -xcode=pic32 ;;
3812             -W*,*)                echo $flag              ;;
3813             -f*-*|-W*|-mimpure-text)                      ;;
3814             -shared)              echo -G                 ;;
3815             *)                    echo $flag              ;;
3816         esac
3817     done
3818 }
3819
3820 tms470_flags(){
3821     for flag; do
3822         case $flag in
3823             -march=*|-mcpu=*)
3824                 case "${flag#*=}" in
3825                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3826                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3827                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3828                     armv6*|arm11*)          echo -mv=6   ;;
3829                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3830                                             echo -mv=5e  ;;
3831                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3832                 esac
3833                 ;;
3834             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3835             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3836             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3837             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3838             -msoft-float)   echo --float_support=vfplib       ;;
3839             -O[0-3]|-mf=*)  echo $flag                        ;;
3840             -g)             echo -g -mn                       ;;
3841             -pds=*)         echo $flag                        ;;
3842             -D*|-I*)        echo $flag                        ;;
3843             --gcc|--abi=*)  echo $flag                        ;;
3844             -me)            echo $flag                        ;;
3845         esac
3846     done
3847 }
3848
3849 probe_cc(){
3850     pfx=$1
3851     _cc=$2
3852     first=$3
3853
3854     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3855     unset _ld_o _ldflags _ld_lib _ld_path
3856     unset _depflags _DEPCMD _DEPFLAGS
3857     _flags_filter=echo
3858
3859     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3860         true # no-op to avoid reading stdin in following checks
3861     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3862         _type=llvm_gcc
3863         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3864         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3865         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3866         _cflags_speed='-O3'
3867         _cflags_size='-Os'
3868     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3869         _type=gcc
3870         gcc_version=$($_cc --version | head -n1)
3871         gcc_basever=$($_cc -dumpversion)
3872         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3873         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3874         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3875         case $gcc_basever in
3876             2) ;;
3877             2.*) ;;
3878             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3879         esac
3880         if [ "$first" = true ]; then
3881             case $gcc_basever in
3882                 4.2*)
3883                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3884             esac
3885         fi
3886         _cflags_speed='-O3'
3887         _cflags_size='-Os'
3888     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3889         _type=icc
3890         _ident=$($_cc --version | head -n1)
3891         _depflags='-MMD'
3892         _cflags_speed='-O3'
3893         _cflags_size='-Os'
3894         _cflags_noopt='-O1'
3895         _flags_filter=icc_flags
3896     elif $_cc -v 2>&1 | grep -q xlc; then
3897         _type=xlc
3898         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3899         _cflags_speed='-O5'
3900         _cflags_size='-O5 -qcompact'
3901     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3902         _type=ccc
3903         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3904         _DEPFLAGS='-M'
3905         _cflags_speed='-fast'
3906         _cflags_size='-O1'
3907         _flags_filter=ccc_flags
3908     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3909         test -d "$sysroot" || die "No valid sysroot specified."
3910         _type=armcc
3911         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3912         armcc_conf="$PWD/armcc.conf"
3913         $_cc --arm_linux_configure                 \
3914              --arm_linux_config_file="$armcc_conf" \
3915              --configure_sysroot="$sysroot"        \
3916              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3917              die "Error creating armcc configuration file."
3918         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3919         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3920         as_default="${cross_prefix}gcc"
3921         _depflags='-MMD'
3922         _cflags_speed='-O3'
3923         _cflags_size='-Os'
3924     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3925         _type=tms470
3926         _ident=$($_cc -version | head -n1 | tr -s ' ')
3927         _flags='--gcc --abi=eabi -me'
3928         _cc_e='-ppl -fe=$@'
3929         _cc_o='-fe=$@'
3930         _depflags='-ppa -ppd=$(@:.o=.d)'
3931         _cflags_speed='-O3 -mf=5'
3932         _cflags_size='-O3 -mf=2'
3933         _flags_filter=tms470_flags
3934     elif $_cc -v 2>&1 | grep -q clang; then
3935         _type=clang
3936         _ident=$($_cc --version 2>/dev/null | head -n1)
3937         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3938         _cflags_speed='-O3'
3939         _cflags_size='-Os'
3940     elif $_cc -V 2>&1 | grep -q Sun; then
3941         _type=suncc
3942         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3943         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3944         _DEPFLAGS='-xM1 -xc99'
3945         _ldflags='-std=c99'
3946         _cflags_speed='-O5'
3947         _cflags_size='-O5 -xspace'
3948         _flags_filter=suncc_flags
3949     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3950         _type=pathscale
3951         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3952         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3953         _cflags_speed='-O2'
3954         _cflags_size='-Os'
3955         _flags_filter='filter_out -Wdisabled-optimization'
3956     elif $_cc -v 2>&1 | grep -q Open64; then
3957         _type=open64
3958         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3959         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3960         _cflags_speed='-O2'
3961         _cflags_size='-Os'
3962         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3963     elif $_cc -V 2>&1 | grep -q Portland; then
3964         _type=pgi
3965         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3966         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3967         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3968         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3969         _cflags_noopt="-O"
3970         _flags_filter=pgi_flags
3971     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3972         _type=armasm
3973         _ident=$($_cc | head -n1)
3974         # 4509: "This form of conditional instruction is deprecated"
3975         _flags="-nologo -ignore 4509"
3976         _flags_filter=armasm_flags
3977     elif $_cc 2>&1 | grep -q Intel; then
3978         _type=icl
3979         _ident=$($_cc 2>&1 | head -n1)
3980         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3981         # Not only is O3 broken on 13.x+ but it is slower on all previous
3982         # versions (tested) as well.
3983         _cflags_speed="-O2"
3984         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3985         if $_cc 2>&1 | grep -q Linker; then
3986             _ld_o='-out:$@'
3987         else
3988             _ld_o='-Fe$@'
3989         fi
3990         _cc_o='-Fo$@'
3991         _cc_e='-P'
3992         _flags_filter=icl_flags
3993         _ld_lib='lib%.a'
3994         _ld_path='-libpath:'
3995         # -Qdiag-error to make icl error when seeing certain unknown arguments
3996         _flags='-nologo -Qdiag-error:4044,10157'
3997         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3998         # with MSVC which enables it by default.
3999         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4000         disable stripping
4001     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4002         _type=msvc
4003         _ident=$($_cc 2>&1 | head -n1)
4004         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4005         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4006         _cflags_speed="-O2"
4007         _cflags_size="-O1"
4008         if $_cc -nologo- 2>&1 | grep -q Linker; then
4009             _ld_o='-out:$@'
4010         else
4011             _ld_o='-Fe$@'
4012         fi
4013         _cc_o='-Fo$@'
4014         _cc_e='-P -Fi$@'
4015         _flags_filter=msvc_flags
4016         _ld_lib='lib%.a'
4017         _ld_path='-libpath:'
4018         _flags='-nologo'
4019         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
4020         disable stripping
4021     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4022         _type=cparser
4023         _ident=$($_cc --version | head -n1)
4024         _depflags='-MMD'
4025         _cflags_speed='-O4'
4026         _cflags_size='-O2'
4027         _flags_filter=cparser_flags
4028     fi
4029
4030     eval ${pfx}_type=\$_type
4031     eval ${pfx}_ident=\$_ident
4032 }
4033
4034 set_ccvars(){
4035     eval ${1}_C=\${_cc_c-\${${1}_C}}
4036     eval ${1}_E=\${_cc_e-\${${1}_E}}
4037     eval ${1}_O=\${_cc_o-\${${1}_O}}
4038
4039     if [ -n "$_depflags" ]; then
4040         eval ${1}_DEPFLAGS=\$_depflags
4041     else
4042         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4043         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4044         eval DEP${1}FLAGS=\$_flags
4045     fi
4046 }
4047
4048 probe_cc cc "$cc" "true"
4049 cflags_filter=$_flags_filter
4050 cflags_speed=$_cflags_speed
4051 cflags_size=$_cflags_size
4052 cflags_noopt=$_cflags_noopt
4053 add_cflags $_flags $_cflags
4054 cc_ldflags=$_ldflags
4055 set_ccvars CC
4056
4057 probe_cc hostcc "$host_cc"
4058 host_cflags_filter=$_flags_filter
4059 add_host_cflags  $_flags $_cflags
4060 set_ccvars HOSTCC
4061
4062 test -n "$cc_type" && enable $cc_type ||
4063     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4064
4065 : ${as_default:=$cc}
4066 : ${objcc_default:=$cc}
4067 : ${dep_cc_default:=$cc}
4068 : ${ld_default:=$cc}
4069 : ${host_ld_default:=$host_cc}
4070 set_default ar as objcc dep_cc ld ln_s host_ld windres
4071
4072 probe_cc as "$as"
4073 asflags_filter=$_flags_filter
4074 add_asflags $_flags $_cflags
4075 set_ccvars AS
4076
4077 probe_cc objcc "$objcc"
4078 objcflags_filter=$_flags_filter
4079 add_objcflags $_flags $_cflags
4080 set_ccvars OBJC
4081
4082 probe_cc ld "$ld"
4083 ldflags_filter=$_flags_filter
4084 add_ldflags $_flags $_ldflags
4085 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4086 LD_O=${_ld_o-$LD_O}
4087 LD_LIB=${_ld_lib-$LD_LIB}
4088 LD_PATH=${_ld_path-$LD_PATH}
4089
4090 probe_cc hostld "$host_ld"
4091 host_ldflags_filter=$_flags_filter
4092 add_host_ldflags $_flags $_ldflags
4093 HOSTLD_O=${_ld_o-$HOSTLD_O}
4094
4095 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4096     probe_cc depcc "$dep_cc"
4097     CCDEP=${_DEPCMD:-$DEPCMD}
4098     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4099     DEPCCFLAGS=$_flags
4100 fi
4101
4102 if $ar 2>&1 | grep -q Microsoft; then
4103     arflags="-nologo"
4104     ar_o='-out:$@'
4105 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4106     arflags="rq"
4107     ar_o='$@'
4108 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4109     arflags='-Xany -r -c'
4110     ar_o='$@'
4111 elif $ar 2>&1 | grep -q "\[D\] "; then
4112     arflags="rcD"
4113     ar_o='$@'
4114 else
4115     arflags="rc"
4116     ar_o='$@'
4117 fi
4118
4119 add_cflags $extra_cflags
4120 add_cxxflags $extra_cxxflags
4121 add_objcflags $extra_objcflags
4122 add_asflags $extra_cflags
4123
4124 if test -n "$sysroot"; then
4125     case "$cc_type" in
4126         gcc|llvm_gcc|clang)
4127             add_cppflags --sysroot="$sysroot"
4128             add_ldflags --sysroot="$sysroot"
4129 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4130             add_cppflags -isysroot "$sysroot"
4131             add_ldflags -isysroot "$sysroot"
4132         ;;
4133         tms470)
4134             add_cppflags -I"$sysinclude"
4135             add_ldflags  --sysroot="$sysroot"
4136         ;;
4137     esac
4138 fi
4139
4140 if test "$cpu" = host; then
4141     enabled cross_compile &&
4142         die "--cpu=host makes no sense when cross-compiling."
4143
4144     case "$cc_type" in
4145         gcc|llvm_gcc)
4146             check_native(){
4147                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4148                 sed -n "/cc1.*$1=/{
4149                             s/.*$1=\\([^ ]*\\).*/\\1/
4150                             p
4151                             q
4152                         }" $TMPE
4153             }
4154             cpu=$(check_native -march || check_native -mcpu)
4155         ;;
4156         clang)
4157             check_native(){
4158                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4159                 sed -n "/cc1.*-target-cpu /{
4160                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4161                             p
4162                             q
4163                         }" $TMPE
4164             }
4165             cpu=$(check_native -march)
4166         ;;
4167     esac
4168
4169     test "${cpu:-host}" = host &&
4170         die "--cpu=host not supported with compiler $cc"
4171 fi
4172
4173 # Deal with common $arch aliases
4174 case "$arch" in
4175     aarch64|arm64)
4176         arch="aarch64"
4177     ;;
4178     arm*|iPad*|iPhone*)
4179         arch="arm"
4180     ;;
4181     mips*|IP*)
4182         case "$arch" in
4183         *el)
4184             add_cppflags -EL
4185             add_ldflags -EL
4186         ;;
4187         *eb)
4188             add_cppflags -EB
4189             add_ldflags -EB
4190         ;;
4191         esac
4192         arch="mips"
4193     ;;
4194     parisc*|hppa*)
4195         arch="parisc"
4196     ;;
4197     "Power Macintosh"|ppc*|powerpc*)
4198         arch="ppc"
4199     ;;
4200     s390|s390x)
4201         arch="s390"
4202     ;;
4203     sh4|sh)
4204         arch="sh4"
4205     ;;
4206     sun4u|sparc*)
4207         arch="sparc"
4208     ;;
4209     tilegx|tile-gx)
4210         arch="tilegx"
4211     ;;
4212     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4213         arch="x86"
4214     ;;
4215 esac
4216
4217 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4218 enable $arch
4219
4220 # Add processor-specific flags
4221 if enabled aarch64; then
4222
4223     case $cpu in
4224         armv*)
4225             cpuflags="-march=$cpu"
4226         ;;
4227         *)
4228             cpuflags="-mcpu=$cpu"
4229         ;;
4230     esac
4231
4232 elif enabled alpha; then
4233
4234     cpuflags="-mcpu=$cpu"
4235
4236 elif enabled arm; then
4237
4238     check_arm_arch() {
4239         check_cpp_condition stddef.h \
4240             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4241             $cpuflags
4242     }
4243
4244     probe_arm_arch() {
4245         if   check_arm_arch 4;        then echo armv4
4246         elif check_arm_arch 4T;       then echo armv4t
4247         elif check_arm_arch 5;        then echo armv5
4248         elif check_arm_arch 5E;       then echo armv5e
4249         elif check_arm_arch 5T;       then echo armv5t
4250         elif check_arm_arch 5TE;      then echo armv5te
4251         elif check_arm_arch 5TEJ;     then echo armv5te
4252         elif check_arm_arch 6;        then echo armv6
4253         elif check_arm_arch 6J;       then echo armv6j
4254         elif check_arm_arch 6K;       then echo armv6k
4255         elif check_arm_arch 6Z;       then echo armv6z
4256         elif check_arm_arch 6ZK;      then echo armv6zk
4257         elif check_arm_arch 6T2;      then echo armv6t2
4258         elif check_arm_arch 7;        then echo armv7
4259         elif check_arm_arch 7A  7_A;  then echo armv7-a
4260         elif check_arm_arch 7S;       then echo armv7-a
4261         elif check_arm_arch 7R  7_R;  then echo armv7-r
4262         elif check_arm_arch 7M  7_M;  then echo armv7-m
4263         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4264         elif check_arm_arch 8A  8_A;  then echo armv8-a
4265         fi
4266     }
4267
4268     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4269
4270     case $cpu in
4271         armv*)
4272             cpuflags="-march=$cpu"
4273             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4274         ;;
4275         *)
4276             cpuflags="-mcpu=$cpu"
4277             case $cpu in
4278                 cortex-a*)                               subarch=armv7a  ;;
4279                 cortex-r*)                               subarch=armv7r  ;;
4280                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4281                 arm11*)                                  subarch=armv6   ;;
4282                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4283                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4284                 *)                             subarch=$(probe_arm_arch) ;;
4285             esac
4286         ;;
4287     esac
4288
4289     case "$subarch" in
4290         armv5t*)    enable fast_clz                ;;
4291         armv[6-8]*)
4292             enable fast_clz
4293             disabled fast_unaligned || enable fast_unaligned
4294             ;;
4295     esac
4296
4297 elif enabled avr32; then
4298
4299     case $cpu in
4300         ap7[02]0[0-2])
4301             subarch="avr32_ap"
4302             cpuflags="-mpart=$cpu"
4303         ;;
4304         ap)
4305             subarch="avr32_ap"
4306             cpuflags="-march=$cpu"
4307         ;;
4308         uc3[ab]*)
4309             subarch="avr32_uc"
4310             cpuflags="-mcpu=$cpu"
4311         ;;
4312         uc)
4313             subarch="avr32_uc"
4314             cpuflags="-march=$cpu"
4315         ;;
4316     esac
4317
4318 elif enabled bfin; then
4319
4320     cpuflags="-mcpu=$cpu"
4321
4322 elif enabled mips; then
4323
4324     cpuflags="-march=$cpu"
4325
4326     if [ "$cpu" != "generic" ]; then
4327         disable mips32r2
4328         disable mips32r5
4329         disable mips64r2
4330         disable mips32r6
4331         disable mips64r6
4332         disable loongson2
4333         disable loongson3
4334
4335         case $cpu in
4336             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4337                 enable mips32r2
4338                 disable msa
4339             ;;
4340             p5600|i6400)
4341                 disable mipsdsp
4342                 disable mipsdspr2
4343             ;;
4344             loongson*)
4345                 enable loongson2
4346                 enable loongson3
4347                 enable local_aligned_8 local_aligned_16 local_aligned_32
4348                 enable simd_align_16
4349                 enable fast_64bit
4350                 enable fast_clz
4351                 enable fast_cmov
4352                 enable fast_unaligned
4353                 disable aligned_stack
4354                 case $cpu in
4355                     loongson3*)
4356                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4357                     ;;
4358                     loongson2e)
4359                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4360                     ;;
4361                     loongson2f)
4362                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4363                     ;;
4364                 esac
4365             ;;
4366             *)
4367                 # Unknown CPU. Disable everything.
4368                 warn "unknown CPU. Disabling all MIPS optimizations."
4369                 disable mipsfpu
4370                 disable mipsdsp
4371                 disable mipsdspr2
4372                 disable msa
4373                 disable mmi
4374             ;;
4375         esac
4376
4377         case $cpu in
4378             24kc)
4379                 disable mipsfpu
4380                 disable mipsdsp
4381                 disable mipsdspr2
4382             ;;
4383             24kf*)
4384                 disable mipsdsp
4385                 disable mipsdspr2
4386             ;;
4387             24kec|34kc|1004kc)
4388                 disable mipsfpu
4389                 disable mipsdspr2
4390             ;;
4391             24kef*|34kf*|1004kf*)
4392                 disable mipsdspr2
4393             ;;
4394             74kc)
4395                 disable mipsfpu
4396             ;;
4397             p5600)
4398                 enable mips32r5
4399                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4400             ;;
4401             i6400)
4402                 enable mips64r6
4403                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4404             ;;
4405         esac
4406     else
4407         # We do not disable anything. Is up to the user to disable the unwanted features.
4408         warn 'generic cpu selected'
4409     fi
4410
4411 elif enabled ppc; then
4412
4413     disable ldbrx
4414
4415     case $(tolower $cpu) in
4416         601|ppc601|powerpc601)
4417             cpuflags="-mcpu=601"
4418             disable altivec
4419         ;;
4420         603*|ppc603*|powerpc603*)
4421             cpuflags="-mcpu=603"
4422             disable altivec
4423         ;;
4424         604*|ppc604*|powerpc604*)
4425             cpuflags="-mcpu=604"
4426             disable altivec
4427         ;;
4428         g3|75*|ppc75*|powerpc75*)
4429             cpuflags="-mcpu=750"
4430             disable altivec
4431         ;;
4432         g4|745*|ppc745*|powerpc745*)
4433             cpuflags="-mcpu=7450"
4434             disable vsx
4435         ;;
4436         74*|ppc74*|powerpc74*)
4437             cpuflags="-mcpu=7400"
4438             disable vsx
4439         ;;
4440         g5|970|ppc970|powerpc970)
4441             cpuflags="-mcpu=970"
4442             disable vsx
4443         ;;
4444         power[3-6]*)
4445             cpuflags="-mcpu=$cpu"
4446             disable vsx
4447         ;;
4448         power[7-8]*)
4449             cpuflags="-mcpu=$cpu"
4450         ;;
4451         cell)
4452             cpuflags="-mcpu=cell"
4453             enable ldbrx
4454             disable vsx
4455         ;;
4456         e500mc)
4457             cpuflags="-mcpu=e500mc"
4458             disable altivec
4459         ;;
4460         e500v2)
4461             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4462             disable altivec
4463             disable dcbzl
4464         ;;
4465         e500)
4466             cpuflags="-mcpu=8540 -mhard-float"
4467             disable altivec
4468             disable dcbzl
4469         ;;
4470     esac
4471
4472 elif enabled sparc; then
4473
4474     case $cpu in
4475         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4476             cpuflags="-mcpu=$cpu"
4477         ;;
4478         ultrasparc*|niagara[234])
4479             cpuflags="-mcpu=$cpu"
4480         ;;
4481     esac
4482
4483 elif enabled x86; then
4484
4485     case $cpu in
4486         i[345]86|pentium)
4487             cpuflags="-march=$cpu"
4488             disable i686
4489             disable mmx
4490         ;;
4491         # targets that do NOT support nopl and conditional mov (cmov)
4492         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4493             cpuflags="-march=$cpu"
4494             disable i686
4495         ;;
4496         # targets that do support nopl and conditional mov (cmov)
4497         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4498         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
4499             cpuflags="-march=$cpu"
4500             enable i686
4501             enable fast_cmov
4502         ;;
4503         # targets that do support conditional mov but on which it's slow
4504         pentium4|pentium4m|prescott|nocona)
4505             cpuflags="-march=$cpu"
4506             enable i686
4507             disable fast_cmov
4508         ;;
4509     esac
4510
4511 fi
4512
4513 if [ "$cpu" != generic ]; then
4514     add_cflags  $cpuflags
4515     add_asflags $cpuflags
4516     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4517 fi
4518
4519 # compiler sanity check
4520 check_exec <<EOF
4521 int main(void){ return 0; }
4522 EOF
4523 if test "$?" != 0; then
4524     echo "$cc is unable to create an executable file."
4525     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4526         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4527         echo "Only do this if you know what cross compiling means."
4528     fi
4529     die "C compiler test failed."
4530 fi
4531
4532 add_cppflags -D_ISOC99_SOURCE
4533 add_cxxflags -D__STDC_CONSTANT_MACROS
4534 add_cxxflags -std=c++98
4535 check_cflags -std=c99
4536 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4537 #include <stdlib.h>
4538 EOF
4539 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4540 #include <stdlib.h>
4541 EOF
4542
4543 add_host_cppflags -D_ISOC99_SOURCE
4544 check_host_cflags -std=c99
4545 check_host_cflags -Wall
4546 check_host_cflags -O3
4547
4548 check_64bit(){
4549     arch32=$1
4550     arch64=$2
4551     expr=$3
4552     check_code cc "" "int test[2*($expr) - 1]" &&
4553         subarch=$arch64 || subarch=$arch32
4554 }
4555
4556 case "$arch" in
4557     aarch64|alpha|ia64)
4558         spic=$shared
4559     ;;
4560     mips)
4561         check_64bit mips mips64 '_MIPS_SIM > 1'
4562         spic=$shared
4563     ;;
4564     parisc)
4565         check_64bit parisc parisc64 'sizeof(void *) > 4'
4566         spic=$shared
4567     ;;
4568     ppc)
4569         check_64bit ppc ppc64 'sizeof(void *) > 4'
4570         spic=$shared
4571     ;;
4572     s390)
4573         check_64bit s390 s390x 'sizeof(void *) > 4'
4574         spic=$shared
4575     ;;
4576     sparc)
4577         check_64bit sparc sparc64 'sizeof(void *) > 4'
4578         spic=$shared
4579     ;;
4580     x86)
4581         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4582         # Treat x32 as x64 for now. Note it also needs spic=$shared
4583         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4584             subarch=x86_64
4585         if test "$subarch" = "x86_64"; then
4586             spic=$shared
4587         fi
4588     ;;
4589     ppc)
4590         check_cc <<EOF && subarch="ppc64"
4591         int test[(int)sizeof(char*) - 7];
4592 EOF
4593     ;;
4594 esac
4595
4596 enable $subarch
4597 enabled spic && enable_weak pic
4598
4599 # OS specific
4600 case $target_os in
4601     aix)
4602         SHFLAGS=-shared
4603         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4604         enabled shared && add_ldflags -Wl,-brtl
4605         ;;
4606     android)
4607         disable symver
4608         enable section_data_rel_ro
4609         SLIB_INSTALL_NAME='$(SLIBNAME)'
4610         SLIB_INSTALL_LINKS=
4611         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4612         ;;
4613     haiku)
4614         prefix_default="/boot/common"
4615         network_extralibs="-lnetwork"
4616         host_libs=
4617         ;;
4618     sunos)
4619         SHFLAGS='-shared -Wl,-h,$$(@F)'
4620         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4621         network_extralibs="-lsocket -lnsl"
4622         add_cppflags -D__EXTENSIONS__
4623         # When using suncc to build, the Solaris linker will mark
4624         # an executable with each instruction set encountered by
4625         # the Solaris assembler.  As our libraries contain their own
4626         # guards for processor-specific code, instead suppress
4627         # generation of the HWCAPS ELF section on Solaris x86 only.
4628         enabled_all suncc x86 &&
4629             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4630             add_ldflags -Wl,-M,mapfile
4631         nm_default='nm -P -g'
4632         version_script='-M'
4633         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4634         ;;
4635     netbsd)
4636         disable symver
4637         oss_indev_extralibs="-lossaudio"
4638         oss_outdev_extralibs="-lossaudio"
4639         enabled gcc || check_ldflags -Wl,-zmuldefs
4640         ;;
4641     openbsd|bitrig)
4642         disable symver
4643         SHFLAGS='-shared'
4644         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4645         SLIB_INSTALL_LINKS=
4646         oss_indev_extralibs="-lossaudio"
4647         oss_outdev_extralibs="-lossaudio"
4648         ;;
4649     dragonfly)
4650         disable symver
4651         ;;
4652     freebsd)
4653         ;;
4654     bsd/os)
4655         add_extralibs -lpoll -lgnugetopt
4656         strip="strip -d"
4657         ;;
4658     darwin)
4659         enabled ppc && add_asflags -force_cpusubtype_ALL
4660         install_name_dir_default='$(SHLIBDIR)'
4661         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4662         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4663         strip="${strip} -x"
4664         add_ldflags -Wl,-dynamic,-search_paths_first
4665         SLIBSUF=".dylib"
4666         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4667         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4668         objformat="macho"
4669         enabled x86_64 && objformat="macho64"
4670         enabled_any pic shared x86_64 ||
4671             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4672         check_header dispatch/dispatch.h &&
4673             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4674         ;;
4675     msys*)
4676         die "Native MSYS builds are discouraged, please use the MINGW environment."
4677         ;;
4678     mingw32*|mingw64*)
4679         if test $target_os = "mingw32ce"; then
4680             disable network
4681         else
4682             target_os=mingw32
4683         fi
4684         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4685         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4686         LIBTARGET=i386
4687         if enabled x86_64; then
4688             LIBTARGET="i386:x86-64"
4689         elif enabled arm; then
4690             LIBTARGET=arm-wince
4691         fi
4692         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4693         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4694         shlibdir_default="$bindir_default"
4695         SLIBPREF=""
4696         SLIBSUF=".dll"
4697         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4698         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4699         dlltool="${cross_prefix}dlltool"
4700         if check_cmd lib.exe -list; then
4701             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4702             if enabled x86_64; then
4703                 LIBTARGET=x64
4704             fi
4705         elif check_cmd $dlltool --version; then
4706             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4707         fi
4708         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4709         SLIB_INSTALL_LINKS=
4710         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4711         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4712         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4713         objformat="win32"
4714         ranlib=:
4715         enable dos_paths
4716         check_ldflags -Wl,--nxcompat,--dynamicbase
4717         # Lets work around some stupidity in binutils.
4718         # ld will strip relocations from executables even though we need them
4719         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4720         # however ld then forgets what the entry point should be (oops) so we
4721         # have to manually (re)set it.
4722         if enabled x86_32; then
4723             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4724         elif enabled x86_64; then
4725             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4726             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4727             # Set image base >4GB for extra entropy with HEASLR
4728             add_ldexeflags -Wl,--image-base,0x140000000
4729             append SHFLAGS -Wl,--image-base,0x180000000
4730         fi
4731         ;;
4732     win32|win64)
4733         disable symver
4734         if enabled shared; then
4735             # Link to the import library instead of the normal static library
4736             # for shared libs.
4737             LD_LIB='%.lib'
4738             # Cannot build both shared and static libs with MSVC or icl.
4739             disable static
4740         fi
4741         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4742         shlibdir_default="$bindir_default"
4743         SLIBPREF=""
4744         SLIBSUF=".dll"
4745         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4746         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4747         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4748         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4749         SLIB_INSTALL_LINKS=
4750         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4751         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4752         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4753         objformat="win32"
4754         ranlib=:
4755         enable dos_paths
4756         ;;
4757     cygwin*)
4758         target_os=cygwin
4759         shlibdir_default="$bindir_default"
4760         SLIBPREF="cyg"
4761         SLIBSUF=".dll"
4762         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4763         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4764         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4765         SLIB_INSTALL_LINKS=
4766         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4767         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4768         objformat="win32"
4769         enable dos_paths
4770         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4771         ;;
4772     *-dos|freedos|opendos)
4773         network_extralibs="-lsocket"
4774         objformat="coff"
4775         enable dos_paths
4776         add_cppflags -U__STRICT_ANSI__
4777         ;;
4778     linux)
4779         enable dv1394
4780         enable section_data_rel_ro
4781         ;;
4782     irix*)
4783         target_os=irix
4784         ranlib="echo ignoring ranlib"
4785         ;;
4786     os/2*)
4787         strip="lxlite -CS"
4788         objformat="aout"
4789         add_cppflags -D_GNU_SOURCE
4790         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4791         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4792         LIBSUF="_s.a"
4793         SLIBPREF=""
4794         SLIBSUF=".dll"
4795         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4796         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4797         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4798             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4799             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4800             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4801             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4802         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4803             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4804         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4805         SLIB_INSTALL_LINKS=
4806         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4807         enable dos_paths
4808         enable_weak os2threads
4809         ;;
4810     gnu/kfreebsd)
4811         add_cppflags -D_BSD_SOURCE
4812         ;;
4813     gnu)
4814         ;;
4815     qnx)
4816         add_cppflags -D_QNX_SOURCE
4817         network_extralibs="-lsocket"
4818         ;;
4819     symbian)
4820         SLIBSUF=".dll"
4821         enable dos_paths
4822         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4823         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4824         add_ldflags -Wl,--target1-abs,--no-undefined \
4825                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4826                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4827         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4828                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4829                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4830         ;;
4831     osf1)
4832         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4833         ;;
4834     minix)
4835         ;;
4836     plan9)
4837         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4838                      -D_REENTRANT_SOURCE        \
4839                      -D_RESEARCH_SOURCE         \
4840                      -DFD_SETSIZE=96            \
4841                      -DHAVE_SOCK_OPTS
4842         add_compat strtod.o strtod=avpriv_strtod
4843         network_extralibs='-lbsd'
4844         exeobjs=compat/plan9/main.o
4845         disable ffserver
4846         cp_f='cp'
4847         ;;
4848     none)
4849         ;;
4850     *)
4851         die "Unknown OS '$target_os'."
4852         ;;
4853 esac
4854
4855 # test if creating links works
4856 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
4857 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
4858 mkdir "$link_dest"
4859 $ln_s "$link_dest" "$link_name"
4860 touch "$link_dest/test_file"
4861 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
4862     # create link to source path
4863     [ -e src ] && rm src
4864     $ln_s "$source_path" src
4865     source_link=src
4866 else
4867     # creating directory links doesn't work
4868     # fall back to using the full source path
4869     source_link="$source_path"
4870 fi
4871 # cleanup
4872 rm -r "$link_dest"
4873 rm -r "$link_name"
4874
4875 # determine libc flavour
4876
4877 probe_libc(){
4878     pfx=$1
4879     pfx_no_=${pfx%_}
4880     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4881     if check_${pfx}cpp_condition features.h "defined __UCLIBC__";