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

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --list-decoders          show all available decoders
  67   --list-encoders          show all available encoders
  68   --list-hwaccels          show all available hardware accelerators
  69   --list-demuxers          show all available demuxers
  70   --list-muxers            show all available muxers
  71   --list-parsers           show all available parsers
  72   --list-protocols         show all available protocols
  73   --list-bsfs              show all available bitstream filters
  74   --list-indevs            show all available input devices
  75   --list-outdevs           show all available output devices
  76   --list-filters           show all available filters
  77
  78 Standard options:
  79   --logfile=FILE           log tests and output to FILE [config.log]
  80   --disable-logging        do not log configure debug information
  81   --fatal-warnings         fail if any configure warning is generated
  82   --prefix=PREFIX          install in PREFIX [$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 Hardware accelerators:
 153   --disable-d3d11va        disable D3D11VA code [autodetect]
 154   --disable-dxva2          disable DXVA2 code [autodetect]
 155   --disable-vaapi          disable VAAPI code [autodetect]
 156   --disable-vda            disable VDA code [autodetect]
 157   --disable-vdpau          disable VDPAU code [autodetect]
 158
 159 Individual component options:
 160   --disable-everything     disable all components listed below
 161   --disable-encoder=NAME   disable encoder NAME
 162   --enable-encoder=NAME    enable encoder NAME
 163   --disable-encoders       disable all encoders
 164   --disable-decoder=NAME   disable decoder NAME
 165   --enable-decoder=NAME    enable decoder NAME
 166   --disable-decoders       disable all decoders
 167   --disable-hwaccel=NAME   disable hwaccel NAME
 168   --enable-hwaccel=NAME    enable hwaccel NAME
 169   --disable-hwaccels       disable all hwaccels
 170   --disable-muxer=NAME     disable muxer NAME
 171   --enable-muxer=NAME      enable muxer NAME
 172   --disable-muxers         disable all muxers
 173   --disable-demuxer=NAME   disable demuxer NAME
 174   --enable-demuxer=NAME    enable demuxer NAME
 175   --disable-demuxers       disable all demuxers
 176   --enable-parser=NAME     enable parser NAME
 177   --disable-parser=NAME    disable parser NAME
 178   --disable-parsers        disable all parsers
 179   --enable-bsf=NAME        enable bitstream filter NAME
 180   --disable-bsf=NAME       disable bitstream filter NAME
 181   --disable-bsfs           disable all bitstream filters
 182   --enable-protocol=NAME   enable protocol NAME
 183   --disable-protocol=NAME  disable protocol NAME
 184   --disable-protocols      disable all protocols
 185   --enable-indev=NAME      enable input device NAME
 186   --disable-indev=NAME     disable input device NAME
 187   --disable-indevs         disable input devices
 188   --enable-outdev=NAME     enable output device NAME
 189   --disable-outdev=NAME    disable output device NAME
 190   --disable-outdevs        disable output devices
 191   --disable-devices        disable all devices
 192   --enable-filter=NAME     enable filter NAME
 193   --disable-filter=NAME    disable filter NAME
 194   --disable-filters        disable all filters
 195
 196 External library support:
 197   --enable-avisynth        enable reading of AviSynth script files [no]
 198   --disable-bzlib          disable bzlib [autodetect]
 199   --enable-cuda            enable dynamically linked CUDA [no]
 200   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 201   --enable-fontconfig      enable fontconfig, useful for drawtext filter [no]
 202   --enable-frei0r          enable frei0r video filtering [no]
 203   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 204                            if openssl, librtmp or gmp is not used [no]
 205   --enable-gmp             enable gmp, needed for rtmp(t)e support
 206                            if openssl or librtmp is not used [no]
 207   --enable-gnutls          enable gnutls, needed for https support
 208                            if openssl is not used [no]
 209   --disable-iconv          disable iconv [autodetect]
 210   --enable-ladspa          enable LADSPA audio filtering [no]
 211   --enable-libass          enable libass subtitles rendering,
 212                            needed for subtitles and ass filter [no]
 213   --enable-libbluray       enable BluRay reading using libbluray [no]
 214   --enable-libbs2b         enable bs2b DSP library [no]
 215   --enable-libcaca         enable textual display using libcaca [no]
 216   --enable-libcelt         enable CELT decoding via libcelt [no]
 217   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 218   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 219                            and libraw1394 [no]
 220   --enable-libdcadec       enable DCA decoding via libdcadec [no]
 221   --enable-libfaac         enable AAC encoding via libfaac [no]
 222   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 223   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 224   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 225   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 226   --enable-libgme          enable Game Music Emu via libgme [no]
 227   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 228   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 229   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 230   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 231   --enable-libmfx          enable HW acceleration through libmfx
 232   --enable-libmodplug      enable ModPlug via libmodplug [no]
 233   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 234   --enable-libnut          enable NUT (de)muxing via libnut,
 235                            native (de)muxer exists [no]
 236   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 237   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 238   --enable-libopencv       enable video filtering via libopencv [no]
 239   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 240   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 241   --enable-libopus         enable Opus de/encoding via libopus [no]
 242   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 243   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 244   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 245   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 246   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 247   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 248   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 249   --enable-libsoxr         enable Include libsoxr resampling [no]
 250   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 251   --enable-libssh          enable SFTP protocol via libssh [no]
 252   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 253   --enable-libtheora       enable Theora encoding via libtheora [no]
 254   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 255   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 256   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 257   --enable-libvidstab      enable video stabilization using vid.stab [no]
 258   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 259   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 260                            native implementation exists [no]
 261   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 262   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 263   --enable-libwebp         enable WebP encoding via libwebp [no]
 264   --enable-libx264         enable H.264 encoding via x264 [no]
 265   --enable-libx265         enable HEVC encoding via x265 [no]
 266   --enable-libxavs         enable AVS encoding via xavs [no]
 267   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 268   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 269   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 270   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 271   --enable-libxvid         enable Xvid encoding via xvidcore,
 272                            native MPEG-4/Xvid encoder exists [no]
 273   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 274   --enable-libzmq          enable message passing via libzmq [no]
 275   --enable-libzvbi         enable teletext support via libzvbi [no]
 276   --disable-lzma           disable lzma [autodetect]
 277   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 278   --enable-mmal            enable decoding via MMAL [no]
 279   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
 280   --enable-nvenc           enable NVIDIA NVENC support [no]
 281   --enable-openal          enable OpenAL 1.1 capture support [no]
 282   --enable-opencl          enable OpenCL code
 283   --enable-opengl          enable OpenGL rendering [no]
 284   --enable-openssl         enable openssl, needed for https support
 285                            if gnutls is not used [no]
 286   --disable-schannel       disable SChannel SSP, needed for TLS support on
 287                            Windows if openssl and gnutls are not used [autodetect]
 288   --disable-sdl            disable sdl [autodetect]
 289   --disable-securetransport disable Secure Transport, needed for TLS support
 290                            on OSX if openssl and gnutls are not used [autodetect]
 291   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 292   --enable-x11grab         enable X11 grabbing (legacy) [no]
 293   --disable-xlib           disable xlib [autodetect]
 294   --disable-zlib           disable zlib [autodetect]
 295
 296 Toolchain options:
 297   --arch=ARCH              select architecture [$arch]
 298   --cpu=CPU                select the minimum required CPU (affects
 299                            instruction selection, may crash on older CPUs)
 300   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 301   --progs-suffix=SUFFIX    program name suffix []
 302   --enable-cross-compile   assume a cross-compiler is used
 303   --sysroot=PATH           root of cross-build tree
 304   --sysinclude=PATH        location of cross-build system headers
 305   --target-os=OS           compiler targets OS [$target_os]
 306   --target-exec=CMD        command to run executables on target
 307   --target-path=DIR        path to view of build directory on target
 308   --target-samples=DIR     path to samples directory on target
 309   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 310   --toolchain=NAME         set tool defaults according to NAME
 311   --nm=NM                  use nm tool NM [$nm_default]
 312   --ar=AR                  use archive tool AR [$ar_default]
 313   --as=AS                  use assembler AS [$as_default]
 314   --strip=STRIP            use strip tool STRIP [$strip_default]
 315   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 316   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 317   --cc=CC                  use C compiler CC [$cc_default]
 318   --cxx=CXX                use C compiler CXX [$cxx_default]
 319   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 320   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 321   --ld=LD                  use linker LD [$ld_default]
 322   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 323   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 324   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 325   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 326   --host-cc=HOSTCC         use host C compiler HOSTCC
 327   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 328   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 329   --host-ld=HOSTLD         use host linker HOSTLD
 330   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 331   --host-libs=HLIBS        use libs HLIBS when linking for host
 332   --host-os=OS             compiler host OS [$target_os]
 333   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 334   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 335   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 336   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 337   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 338   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 339   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 340   --extra-version=STRING   version string suffix []
 341   --optflags=OPTFLAGS      override optimization-related compiler flags
 342   --build-suffix=SUFFIX    library name suffix []
 343   --enable-pic             build position-independent code
 344   --enable-thumb           compile for Thumb instruction set
 345   --enable-lto             use link-time optimization
 346   --env="ENV=override"     override the environment variables
 347
 348 Advanced options (experts only):
 349   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 350   --custom-allocator=NAME  use a supported custom allocator
 351   --disable-symver         disable symbol versioning
 352   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 353   --disable-safe-bitstream-reader
 354                            disable buffer boundary checking in bitreaders
 355                            (faster, but may crash)
 356   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 357   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 358
 359 Optimization options (experts only):
 360   --disable-asm            disable all assembly optimizations
 361   --disable-altivec        disable AltiVec optimizations
 362   --disable-vsx            disable VSX optimizations
 363   --disable-power8         disable POWER8 optimizations
 364   --disable-amd3dnow       disable 3DNow! optimizations
 365   --disable-amd3dnowext    disable 3DNow! extended optimizations
 366   --disable-mmx            disable MMX optimizations
 367   --disable-mmxext         disable MMXEXT optimizations
 368   --disable-sse            disable SSE optimizations
 369   --disable-sse2           disable SSE2 optimizations
 370   --disable-sse3           disable SSE3 optimizations
 371   --disable-ssse3          disable SSSE3 optimizations
 372   --disable-sse4           disable SSE4 optimizations
 373   --disable-sse42          disable SSE4.2 optimizations
 374   --disable-avx            disable AVX optimizations
 375   --disable-xop            disable XOP optimizations
 376   --disable-fma3           disable FMA3 optimizations
 377   --disable-fma4           disable FMA4 optimizations
 378   --disable-avx2           disable AVX2 optimizations
 379   --disable-aesni          disable AESNI optimizations
 380   --disable-armv5te        disable armv5te optimizations
 381   --disable-armv6          disable armv6 optimizations
 382   --disable-armv6t2        disable armv6t2 optimizations
 383   --disable-vfp            disable VFP optimizations
 384   --disable-neon           disable NEON optimizations
 385   --disable-inline-asm     disable use of inline assembly
 386   --disable-yasm           disable use of nasm/yasm assembly
 387   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 388   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 389   --disable-msa            disable MSA optimizations
 390   --disable-mipsfpu        disable floating point MIPS optimizations
 391   --disable-mmi            disable Loongson SIMD optimizations
 392   --disable-fast-unaligned consider unaligned accesses slow
 393
 394 Developer options (useful when working on FFmpeg itself):
 395   --disable-debug          disable debugging symbols
 396   --enable-debug=LEVEL     set the debug level [$debuglevel]
 397   --disable-optimizations  disable compiler optimizations
 398   --enable-extra-warnings  enable more compiler warnings
 399   --disable-stripping      disable stripping of executables and shared libraries
 400   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 401                            2 causes a slowdown at runtime.
 402   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 403   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 404                            leaks and errors, using the specified valgrind binary.
 405                            Cannot be combined with --target-exec
 406   --enable-ftrapv          Trap arithmetic overflows
 407   --samples=PATH           location of test samples for FATE, if not set use
 408                            \$FATE_SAMPLES at make invocation time.
 409   --enable-neon-clobber-test check NEON registers for clobbering (should be
 410                            used only for debugging purposes)
 411   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 412                            should be used only for debugging purposes)
 413   --enable-random          randomly enable/disable components
 414   --disable-random
 415   --enable-random=LIST     randomly enable/disable specific components or
 416   --disable-random=LIST    component groups. LIST is a comma-separated list
 417                            of NAME[:PROB] entries where NAME is a component
 418                            (group) and PROB the probability associated with
 419                            NAME (default 0.5).
 420   --random-seed=VALUE      seed value for --enable/disable-random
 421   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 422                            (only applies to --disable-optimizations builds)
 423
 424 NOTE: Object files are built at the place where configure is launched.
 425 EOF
 426   exit 0
 427 }
 428
 429 quotes='""'
 430 if test -t 1 && which tput >/dev/null 2>&1; then
 431     ncolors=$(tput colors)
 432     if test -n "$ncolors" && test $ncolors -ge 8; then
 433         bold_color=$(tput bold)
 434         warn_color=$(tput setaf 3)
 435         error_color=$(tput setaf 1)
 436         reset_color=$(tput sgr0)
 437     fi
 438     # 72 used instead of 80 since that's the default of pr
 439     ncols=$(tput cols)
 440 fi
 441 : ${ncols:=72}
 442
 443 log(){
 444     echo "$@" >> $logfile
 445 }
 446
 447 log_file(){
 448     log BEGIN $1
 449     pr -n -t $1 >> $logfile
 450     log END $1
 451 }
 452
 453 warn(){
 454     log "WARNING: $*"
 455     WARNINGS="${WARNINGS}WARNING: $*\n"
 456 }
 457
 458 die(){
 459     log "$@"
 460     echo "$error_color$bold_color$@$reset_color"
 461     cat <<EOF
 462
 463 If you think configure made a mistake, make sure you are using the latest
 464 version from Git.  If the latest version fails, report the problem to the
 465 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 466 EOF
 467     if disabled logging; then
 468         cat <<EOF
 469 Rerun configure with logging enabled (do not use --disable-logging), and
 470 include the log this produces with your report.
 471 EOF
 472     else
 473         cat <<EOF
 474 Include the log file "$logfile" produced by configure as this will help
 475 solve the problem.
 476 EOF
 477     fi
 478     exit 1
 479 }
 480
 481 # Avoid locale weirdness, besides we really just want to translate ASCII.
 482 toupper(){
 483     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 484 }
 485
 486 tolower(){
 487     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 488 }
 489
 490 c_escape(){
 491     echo "$*" | sed 's/["\\]/\\\0/g'
 492 }
 493
 494 sh_quote(){
 495     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 496     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 497     echo "$v"
 498 }
 499
 500 cleanws(){
 501     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 502 }
 503
 504 filter(){
 505     pat=$1
 506     shift
 507     for v; do
 508         eval "case $v in $pat) echo $v ;; esac"
 509     done
 510 }
 511
 512 filter_out(){
 513     pat=$1
 514     shift
 515     for v; do
 516         eval "case $v in $pat) ;; *) echo $v ;; esac"
 517     done
 518 }
 519
 520 map(){
 521     m=$1
 522     shift
 523     for v; do eval $m; done
 524 }
 525
 526 add_suffix(){
 527     suffix=$1
 528     shift
 529     for v; do echo ${v}${suffix}; done
 530 }
 531
 532 set_all(){
 533     value=$1
 534     shift
 535     for var in $*; do
 536         eval $var=$value
 537     done
 538 }
 539
 540 set_weak(){
 541     value=$1
 542     shift
 543     for var; do
 544         eval : \${$var:=$value}
 545     done
 546 }
 547
 548 sanitize_var_name(){
 549     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 550 }
 551
 552 set_safe(){
 553     var=$1
 554     shift
 555     eval $(sanitize_var_name "$var")='$*'
 556 }
 557
 558 get_safe(){
 559     eval echo \$$(sanitize_var_name "$1")
 560 }
 561
 562 pushvar(){
 563     for pvar in $*; do
 564         eval level=\${${pvar}_level:=0}
 565         eval ${pvar}_${level}="\$$pvar"
 566         eval ${pvar}_level=$(($level+1))
 567     done
 568 }
 569
 570 popvar(){
 571     for pvar in $*; do
 572         eval level=\${${pvar}_level:-0}
 573         test $level = 0 && continue
 574         eval level=$(($level-1))
 575         eval $pvar="\${${pvar}_${level}}"
 576         eval ${pvar}_level=$level
 577         eval unset ${pvar}_${level}
 578     done
 579 }
 580
 581 enable(){
 582     set_all yes $*
 583 }
 584
 585 disable(){
 586     set_all no $*
 587 }
 588
 589 enable_weak(){
 590     set_weak yes $*
 591 }
 592
 593 disable_weak(){
 594     set_weak no $*
 595 }
 596
 597 enable_safe(){
 598     for var; do
 599         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 600     done
 601 }
 602
 603 disable_safe(){
 604     for var; do
 605         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 606     done
 607 }
 608
 609 do_enable_deep(){
 610     for var; do
 611         enabled $var && continue
 612         eval sel="\$${var}_select"
 613         eval sgs="\$${var}_suggest"
 614         pushvar var sgs
 615         enable_deep $sel
 616         popvar sgs
 617         enable_deep_weak $sgs
 618         popvar var
 619     done
 620 }
 621
 622 enable_deep(){
 623     do_enable_deep $*
 624     enable $*
 625 }
 626
 627 enable_deep_weak(){
 628     for var; do
 629         disabled $var && continue
 630         pushvar var
 631         do_enable_deep $var
 632         popvar var
 633         enable_weak $var
 634     done
 635 }
 636
 637 enabled(){
 638     test "${1#!}" = "$1" && op='=' || op=!=
 639     eval test "x\$${1#!}" $op "xyes"
 640 }
 641
 642 disabled(){
 643     test "${1#!}" = "$1" && op='=' || op=!=
 644     eval test "x\$${1#!}" $op "xno"
 645 }
 646
 647 enabled_all(){
 648     for opt; do
 649         enabled $opt || return 1
 650     done
 651 }
 652
 653 disabled_all(){
 654     for opt; do
 655         disabled $opt || return 1
 656     done
 657 }
 658
 659 enabled_any(){
 660     for opt; do
 661         enabled $opt && return 0
 662     done
 663 }
 664
 665 disabled_any(){
 666     for opt; do
 667         disabled $opt && return 0
 668     done
 669     return 1
 670 }
 671
 672 set_default(){
 673     for opt; do
 674         eval : \${$opt:=\$${opt}_default}
 675     done
 676 }
 677
 678 is_in(){
 679     value=$1
 680     shift
 681     for var in $*; do
 682         [ $var = $value ] && return 0
 683     done
 684     return 1
 685 }
 686
 687 do_check_deps(){
 688     for cfg; do
 689         cfg="${cfg#!}"
 690         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 691         disabled ${cfg}_checking && continue
 692         enable ${cfg}_checking
 693         append allopts $cfg
 694
 695         eval dep_all="\$${cfg}_deps"
 696         eval dep_any="\$${cfg}_deps_any"
 697         eval dep_sel="\$${cfg}_select"
 698         eval dep_sgs="\$${cfg}_suggest"
 699         eval dep_ifa="\$${cfg}_if"
 700         eval dep_ifn="\$${cfg}_if_any"
 701
 702         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 703         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 704         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 705
 706         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 707         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 708         enabled_all  $dep_all || disable $cfg
 709         enabled_any  $dep_any || disable $cfg
 710         disabled_any $dep_sel && disable $cfg
 711
 712         if enabled $cfg; then
 713             enable_deep $dep_sel
 714             enable_deep_weak $dep_sgs
 715         fi
 716
 717         disable ${cfg}_checking
 718     done
 719 }
 720
 721 check_deps(){
 722     unset allopts
 723
 724     do_check_deps "$@"
 725
 726     for cfg in $allopts; do
 727         enabled $cfg || continue
 728         eval dep_extralibs="\$${cfg}_extralibs"
 729         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 730     done
 731 }
 732
 733 print_config(){
 734     pfx=$1
 735     files=$2
 736     shift 2
 737     map 'eval echo "$v \${$v:-no}"' "$@" |
 738     awk "BEGIN { split(\"$files\", files) }
 739         {
 740             c = \"$pfx\" toupper(\$1);
 741             v = \$2;
 742             sub(/yes/, 1, v);
 743             sub(/no/,  0, v);
 744             for (f in files) {
 745                 file = files[f];
 746                 if (file ~ /\\.h\$/) {
 747                     printf(\"#define %s %d\\n\", c, v) >>file;
 748                 } else if (file ~ /\\.asm\$/) {
 749                     printf(\"%%define %s %d\\n\", c, v) >>file;
 750                 } else if (file ~ /\\.mak\$/) {
 751                     n = -v ? \"\" : \"!\";
 752                     printf(\"%s%s=yes\\n\", n, c) >>file;
 753                 } else if (file ~ /\\.texi\$/) {
 754                     pre = -v ? \"\" : \"@c \";
 755                     yesno = \$2;
 756                     c2 = tolower(c);
 757                     gsub(/_/, \"-\", c2);
 758                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 759                 }
 760             }
 761         }"
 762 }
 763
 764 print_enabled(){
 765     suf=$1
 766     shift
 767     for v; do
 768         enabled $v && printf "%s\n" ${v%$suf};
 769     done
 770 }
 771
 772 append(){
 773     var=$1
 774     shift
 775     eval "$var=\"\$$var $*\""
 776 }
 777
 778 prepend(){
 779     var=$1
 780     shift
 781     eval "$var=\"$* \$$var\""
 782 }
 783
 784 unique(){
 785     var=$1
 786     uniq_list=""
 787     for tok in $(eval echo \$$var); do
 788         uniq_list="$(filter_out $tok $uniq_list) $tok"
 789     done
 790     eval "$var=\"${uniq_list}\""
 791 }
 792
 793 add_cppflags(){
 794     append CPPFLAGS "$@"
 795 }
 796
 797 add_cflags(){
 798     append CFLAGS $($cflags_filter "$@")
 799 }
 800
 801 add_cxxflags(){
 802     append CXXFLAGS $($cflags_filter "$@")
 803 }
 804
 805 add_asflags(){
 806     append ASFLAGS $($asflags_filter "$@")
 807 }
 808
 809 add_objcflags(){
 810     append OBJCFLAGS $($objcflags_filter "$@")
 811 }
 812
 813 add_ldflags(){
 814     append LDFLAGS $($ldflags_filter "$@")
 815 }
 816
 817 add_ldexeflags(){
 818     append LDEXEFLAGS $($ldflags_filter "$@")
 819 }
 820
 821 add_ldlibflags(){
 822     append LDLIBFLAGS $($ldflags_filter "$@")
 823 }
 824
 825 add_stripflags(){
 826     append ASMSTRIPFLAGS "$@"
 827 }
 828
 829 add_extralibs(){
 830     prepend extralibs $($ldflags_filter "$@")
 831 }
 832
 833 add_host_cppflags(){
 834     append host_cppflags "$@"
 835 }
 836
 837 add_host_cflags(){
 838     append host_cflags $($host_cflags_filter "$@")
 839 }
 840
 841 add_host_ldflags(){
 842     append host_ldflags $($host_ldflags_filter "$@")
 843 }
 844
 845 add_compat(){
 846     append compat_objs $1
 847     shift
 848     map 'add_cppflags -D$v' "$@"
 849 }
 850
 851 check_cmd(){
 852     log "$@"
 853     "$@" >> $logfile 2>&1
 854 }
 855
 856 check_stat(){
 857     log check_stat "$@"
 858     stat "$1" >> $logfile 2>&1
 859 }
 860
 861 cc_o(){
 862     eval printf '%s\\n' $CC_O
 863 }
 864
 865 cc_e(){
 866     eval printf '%s\\n' $CC_E
 867 }
 868
 869 check_cc(){
 870     log check_cc "$@"
 871     cat > $TMPC
 872     log_file $TMPC
 873     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 874 }
 875
 876 check_cxx(){
 877     log check_cxx "$@"
 878     cat > $TMPCPP
 879     log_file $TMPCPP
 880     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 881 }
 882
 883 check_objcc(){
 884     log check_objcc "$@"
 885     cat > $TMPM
 886     log_file $TMPM
 887     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 888 }
 889
 890 check_cpp(){
 891     log check_cpp "$@"
 892     cat > $TMPC
 893     log_file $TMPC
 894     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 895 }
 896
 897 as_o(){
 898     eval printf '%s\\n' $AS_O
 899 }
 900
 901 check_as(){
 902     log check_as "$@"
 903     cat > $TMPS
 904     log_file $TMPS
 905     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 906 }
 907
 908 check_inline_asm(){
 909     log check_inline_asm "$@"
 910     name="$1"
 911     code="$2"
 912     shift 2
 913     disable $name
 914     check_cc "$@" <<EOF && enable $name
 915 void foo(void){ __asm__ volatile($code); }
 916 EOF
 917 }
 918
 919 check_insn(){
 920     log check_insn "$@"
 921     check_inline_asm ${1}_inline "\"$2\""
 922     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 923 }
 924
 925 check_yasm(){
 926     log check_yasm "$@"
 927     echo "$1" > $TMPS
 928     log_file $TMPS
 929     shift 1
 930     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 931 }
 932
 933 ld_o(){
 934     eval printf '%s\\n' $LD_O
 935 }
 936
 937 check_ld(){
 938     log check_ld "$@"
 939     type=$1
 940     shift 1
 941     flags=$(filter_out '-l*|*.so' $@)
 942     libs=$(filter '-l*|*.so' $@)
 943     check_$type $($cflags_filter $flags) || return
 944     flags=$($ldflags_filter $flags)
 945     libs=$($ldflags_filter $libs)
 946     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 947 }
 948
 949 print_include(){
 950     hdr=$1
 951     test "${hdr%.h}" = "${hdr}" &&
 952         echo "#include $hdr"    ||
 953         echo "#include <$hdr>"
 954 }
 955
 956 check_code(){
 957     log check_code "$@"
 958     check=$1
 959     headers=$2
 960     code=$3
 961     shift 3
 962     {
 963         for hdr in $headers; do
 964             print_include $hdr
 965         done
 966         echo "int main(void) { $code; return 0; }"
 967     } | check_$check "$@"
 968 }
 969
 970 check_cppflags(){
 971     log check_cppflags "$@"
 972     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 973 int x;
 974 EOF
 975 }
 976
 977 test_cflags(){
 978     log test_cflags "$@"
 979     set -- $($cflags_filter "$@")
 980     check_cc "$@" <<EOF
 981 int x;
 982 EOF
 983 }
 984
 985 check_cflags(){
 986     log check_cflags "$@"
 987     test_cflags "$@" && add_cflags "$@"
 988 }
 989
 990 check_cxxflags(){
 991     log check_cxxflags "$@"
 992     set -- $($cflags_filter "$@")
 993     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
 994 int x;
 995 EOF
 996 }
 997
 998 test_objcflags(){
 999     log test_cflags "$@"
1000     set -- $($cflags_filter "$@")
1001     check_objcc "$@" <<EOF
1002 int x;
1003 EOF
1004 }
1005
1006 check_objcflags(){
1007     log check_cflags "$@"
1008     test_objcflags "$@" && add_objcflags "$@"
1009 }
1010
1011 test_ldflags(){
1012     log test_ldflags "$@"
1013     check_ld "cc" "$@" <<EOF
1014 int main(void){ return 0; }
1015 EOF
1016 }
1017
1018 check_ldflags(){
1019     log check_ldflags "$@"
1020     test_ldflags "$@" && add_ldflags "$@"
1021 }
1022
1023 test_stripflags(){
1024     log test_stripflags "$@"
1025     # call check_cc to get a fresh TMPO
1026     check_cc <<EOF
1027 int main(void) { return 0; }
1028 EOF
1029     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1030 }
1031
1032 check_stripflags(){
1033     log check_stripflags "$@"
1034     test_stripflags "$@" && add_stripflags "$@"
1035 }
1036
1037 check_header(){
1038     log check_header "$@"
1039     header=$1
1040     shift
1041     disable_safe $header
1042     check_cpp "$@" <<EOF && enable_safe $header
1043 #include <$header>
1044 int x;
1045 EOF
1046 }
1047
1048 check_header_objcc(){
1049     log check_header_objcc "$@"
1050     rm -f -- "$TMPO"
1051     header=$1
1052     shift
1053     disable_safe $header
1054     {
1055        echo "#include <$header>"
1056        echo "int main(void) { return 0; }"
1057     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1058 }
1059
1060 check_func(){
1061     log check_func "$@"
1062     func=$1
1063     shift
1064     disable $func
1065     check_ld "cc" "$@" <<EOF && enable $func
1066 extern int $func();
1067 int main(void){ $func(); }
1068 EOF
1069 }
1070
1071 check_complexfunc(){
1072     log check_complexfunc "$@"
1073     func=$1
1074     narg=$2
1075     shift 2
1076     test $narg = 2 && args="f, g" || args="f * I"
1077     disable $func
1078     check_ld "cc" "$@" <<EOF && enable $func
1079 #include <complex.h>
1080 #include <math.h>
1081 float foo(complex float f, complex float g) { return $func($args); }
1082 int main(void){ return (int) foo; }
1083 EOF
1084 }
1085
1086 check_mathfunc(){
1087     log check_mathfunc "$@"
1088     func=$1
1089     narg=$2
1090     shift 2
1091     test $narg = 2 && args="f, g" || args="f"
1092     disable $func
1093     check_ld "cc" "$@" <<EOF && enable $func
1094 #include <math.h>
1095 float foo(float f, float g) { return $func($args); }
1096 int main(void){ return (int) foo; }
1097 EOF
1098 }
1099
1100 check_func_headers(){
1101     log check_func_headers "$@"
1102     headers=$1
1103     funcs=$2
1104     shift 2
1105     {
1106         for hdr in $headers; do
1107             print_include $hdr
1108         done
1109         for func in $funcs; do
1110             echo "long check_$func(void) { return (long) $func; }"
1111         done
1112         echo "int main(void) { return 0; }"
1113     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1114 }
1115
1116 check_class_headers_cpp(){
1117     log check_class_headers_cpp "$@"
1118     headers=$1
1119     classes=$2
1120     shift 2
1121     {
1122         for hdr in $headers; do
1123             echo "#include <$hdr>"
1124         done
1125         echo "int main(void) { "
1126         i=1
1127         for class in $classes; do
1128             echo "$class obj$i;"
1129             i=$(expr $i + 1)
1130         done
1131         echo "return 0; }"
1132     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1133 }
1134
1135 check_cpp_condition(){
1136     log check_cpp_condition "$@"
1137     header=$1
1138     condition=$2
1139     shift 2
1140     check_cpp "$@" <<EOF
1141 #include <$header>
1142 #if !($condition)
1143 #error "unsatisfied condition: $condition"
1144 #endif
1145 EOF
1146 }
1147
1148 check_lib(){
1149     log check_lib "$@"
1150     header="$1"
1151     func="$2"
1152     shift 2
1153     check_header $header && check_func $func "$@" && add_extralibs "$@"
1154 }
1155
1156 check_lib2(){
1157     log check_lib2 "$@"
1158     headers="$1"
1159     funcs="$2"
1160     shift 2
1161     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1162 }
1163
1164 check_lib_cpp(){
1165     log check_lib_cpp "$@"
1166     headers="$1"
1167     classes="$2"
1168     shift 2
1169     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1170 }
1171
1172 check_pkg_config(){
1173     log check_pkg_config "$@"
1174     pkgandversion="$1"
1175     pkg="${1%% *}"
1176     headers="$2"
1177     funcs="$3"
1178     shift 3
1179     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1180     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1181     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1182     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1183         set_safe "${pkg}_cflags" $pkg_cflags   &&
1184         set_safe "${pkg}_libs"   $pkg_libs
1185 }
1186
1187 check_exec(){
1188     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1189 }
1190
1191 check_exec_crash(){
1192     code=$(cat)
1193
1194     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1195     # are safe but may not be available everywhere.  Thus we use
1196     # raise(SIGTERM) instead.  The check is run in a subshell so we
1197     # can redirect the "Terminated" message from the shell.  SIGBUS
1198     # is not defined by standard C so it is used conditionally.
1199
1200     (check_exec "$@") >> $logfile 2>&1 <<EOF
1201 #include <signal.h>
1202 static void sighandler(int sig){
1203     raise(SIGTERM);
1204 }
1205 int foo(void){
1206     $code
1207 }
1208 int (*func_ptr)(void) = foo;
1209 int main(void){
1210     signal(SIGILL, sighandler);
1211     signal(SIGFPE, sighandler);
1212     signal(SIGSEGV, sighandler);
1213 #ifdef SIGBUS
1214     signal(SIGBUS, sighandler);
1215 #endif
1216     return func_ptr();
1217 }
1218 EOF
1219 }
1220
1221 check_type(){
1222     log check_type "$@"
1223     headers=$1
1224     type=$2
1225     shift 2
1226     disable_safe "$type"
1227     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1228 }
1229
1230 check_struct(){
1231     log check_struct "$@"
1232     headers=$1
1233     struct=$2
1234     member=$3
1235     shift 3
1236     disable_safe "${struct}_${member}"
1237     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1238         enable_safe "${struct}_${member}"
1239 }
1240
1241 check_builtin(){
1242     log check_builtin "$@"
1243     name=$1
1244     headers=$2
1245     builtin=$3
1246     shift 3
1247     disable "$name"
1248     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1249 }
1250
1251 check_compile_assert(){
1252     log check_compile_assert "$@"
1253     name=$1
1254     headers=$2
1255     condition=$3
1256     shift 3
1257     disable "$name"
1258     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1259 }
1260
1261 require(){
1262     name="$1"
1263     header="$2"
1264     func="$3"
1265     shift 3
1266     check_lib $header $func "$@" || die "ERROR: $name not found"
1267 }
1268
1269 require2(){
1270     name="$1"
1271     headers="$2"
1272     func="$3"
1273     shift 3
1274     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1275 }
1276
1277 require_cpp(){
1278     name="$1"
1279     headers="$2"
1280     classes="$3"
1281     shift 3
1282     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1283 }
1284
1285 use_pkg_config(){
1286     pkg="$1"
1287     check_pkg_config "$@" || return 1
1288     add_cflags    $(get_safe "${pkg}_cflags")
1289     add_extralibs $(get_safe "${pkg}_libs")
1290 }
1291
1292 require_pkg_config(){
1293     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1294 }
1295
1296 require_libfreetype(){
1297     log require_libfreetype "$@"
1298     pkg="freetype2"
1299     check_cmd $pkg_config --exists --print-errors $pkg \
1300       || die "ERROR: $pkg not found"
1301     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1302     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1303     {
1304         echo "#include <ft2build.h>"
1305         echo "#include FT_FREETYPE_H"
1306         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1307         echo "int main(void) { return 0; }"
1308     } | check_ld "cc" $pkg_cflags $pkg_libs \
1309       && set_safe "${pkg}_cflags" $pkg_cflags \
1310       && set_safe "${pkg}_libs"   $pkg_libs \
1311       || die "ERROR: $pkg not found"
1312     add_cflags    $(get_safe "${pkg}_cflags")
1313     add_extralibs $(get_safe "${pkg}_libs")
1314 }
1315
1316 hostcc_e(){
1317     eval printf '%s\\n' $HOSTCC_E
1318 }
1319
1320 hostcc_o(){
1321     eval printf '%s\\n' $HOSTCC_O
1322 }
1323
1324 check_host_cc(){
1325     log check_host_cc "$@"
1326     cat > $TMPC
1327     log_file $TMPC
1328     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1329 }
1330
1331 check_host_cpp(){
1332     log check_host_cpp "$@"
1333     cat > $TMPC
1334     log_file $TMPC
1335     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1336 }
1337
1338 check_host_cppflags(){
1339     log check_host_cppflags "$@"
1340     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1341 int x;
1342 EOF
1343 }
1344
1345 check_host_cflags(){
1346     log check_host_cflags "$@"
1347     set -- $($host_cflags_filter "$@")
1348     check_host_cc "$@" <<EOF && append host_cflags "$@"
1349 int x;
1350 EOF
1351 }
1352
1353 check_host_cpp_condition(){
1354     log check_host_cpp_condition "$@"
1355     header=$1
1356     condition=$2
1357     shift 2
1358     check_host_cpp "$@" <<EOF
1359 #include <$header>
1360 #if !($condition)
1361 #error "unsatisfied condition: $condition"
1362 #endif
1363 EOF
1364 }
1365
1366 cp_if_changed(){
1367     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1368     mkdir -p "$(dirname $2)"
1369     $cp_f "$1" "$2"
1370 }
1371
1372 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1373 # system-dependent things.
1374
1375 AVCODEC_COMPONENTS="
1376     bsfs
1377     decoders
1378     encoders
1379     hwaccels
1380     parsers
1381 "
1382
1383 AVDEVICE_COMPONENTS="
1384     indevs
1385     outdevs
1386 "
1387 AVFILTER_COMPONENTS="
1388     filters
1389 "
1390 AVFORMAT_COMPONENTS="
1391     demuxers
1392     muxers
1393     protocols
1394 "
1395
1396 AVRESAMPLE_COMPONENTS=""
1397 AVUTIL_COMPONENTS=""
1398
1399 COMPONENT_LIST="
1400     $AVCODEC_COMPONENTS
1401     $AVDEVICE_COMPONENTS
1402     $AVFILTER_COMPONENTS
1403     $AVFORMAT_COMPONENTS
1404     $AVRESAMPLE_COMPONENTS
1405     $AVUTIL_COMPONENTS
1406 "
1407
1408 EXAMPLE_LIST="
1409     avio_reading_example
1410     avio_dir_cmd_example
1411     decoding_encoding_example
1412     demuxing_decoding_example
1413     extract_mvs_example
1414     filter_audio_example
1415     filtering_audio_example
1416     filtering_video_example
1417     metadata_example
1418     muxing_example
1419     qsvdec_example
1420     remuxing_example
1421     resampling_audio_example
1422     scaling_video_example
1423     transcode_aac_example
1424     transcoding_example
1425 "
1426
1427 EXTERNAL_LIBRARY_LIST="
1428     avisynth
1429     bzlib
1430     chromaprint
1431     crystalhd
1432     cuda
1433     decklink
1434     frei0r
1435     gcrypt
1436     gmp
1437     gnutls
1438     iconv
1439     ladspa
1440     libass
1441     libbluray
1442     libbs2b
1443     libcaca
1444     libcdio
1445     libcelt
1446     libdc1394
1447     libdcadec
1448     libfaac
1449     libfdk_aac
1450     libflite
1451     libfontconfig
1452     libfreetype
1453     libfribidi
1454     libgme
1455     libgsm
1456     libiec61883
1457     libilbc
1458     libkvazaar
1459     libmfx
1460     libmodplug
1461     libmp3lame
1462     libnut
1463     libopencore_amrnb
1464     libopencore_amrwb
1465     libopencv
1466     libopenh264
1467     libopenjpeg
1468     libopus
1469     libpulse
1470     librtmp
1471     librubberband
1472     libschroedinger
1473     libshine
1474     libsmbclient
1475     libsnappy
1476     libsoxr
1477     libspeex
1478     libssh
1479     libtesseract
1480     libtheora
1481     libtwolame
1482     libutvideo
1483     libv4l2
1484     libvidstab
1485     libvo_amrwbenc
1486     libvorbis
1487     libvpx
1488     libwavpack
1489     libwebp
1490     libx264
1491     libx265
1492     libxavs
1493     libxcb
1494     libxcb_shm
1495     libxcb_shape
1496     libxcb_xfixes
1497     libxvid
1498     libzimg
1499     libzmq
1500     libzvbi
1501     lzma
1502     mmal
1503     netcdf
1504     nvenc
1505     openal
1506     opencl
1507     opengl
1508     openssl
1509     schannel
1510     sdl
1511     securetransport
1512     videotoolbox
1513     x11grab
1514     xlib
1515     zlib
1516 "
1517
1518 DOCUMENT_LIST="
1519     doc
1520     htmlpages
1521     manpages
1522     podpages
1523     txtpages
1524 "
1525
1526 FEATURE_LIST="
1527     ftrapv
1528     gray
1529     hardcoded_tables
1530     runtime_cpudetect
1531     safe_bitstream_reader
1532     shared
1533     small
1534     static
1535     swscale_alpha
1536 "
1537
1538 HWACCEL_LIST="
1539     d3d11va
1540     dxva2
1541     vaapi
1542     vda
1543     vdpau
1544     videotoolbox_hwaccel
1545     xvmc
1546 "
1547
1548 LIBRARY_LIST="
1549     avcodec
1550     avdevice
1551     avfilter
1552     avformat
1553     avresample
1554     avutil
1555     postproc
1556     swresample
1557     swscale
1558 "
1559
1560 LICENSE_LIST="
1561     gpl
1562     nonfree
1563     version3
1564 "
1565
1566 PROGRAM_LIST="
1567     ffplay
1568     ffprobe
1569     ffserver
1570     ffmpeg
1571 "
1572
1573 SUBSYSTEM_LIST="
1574     dct
1575     dwt
1576     error_resilience
1577     faan
1578     fast_unaligned
1579     fft
1580     lsp
1581     lzo
1582     mdct
1583     pixelutils
1584     network
1585     rdft
1586 "
1587
1588 CONFIG_LIST="
1589     $COMPONENT_LIST
1590     $DOCUMENT_LIST
1591     $EXAMPLE_LIST
1592     $EXTERNAL_LIBRARY_LIST
1593     $FEATURE_LIST
1594     $HWACCEL_LIST
1595     $LICENSE_LIST
1596     $LIBRARY_LIST
1597     $PROGRAM_LIST
1598     $SUBSYSTEM_LIST
1599     fontconfig
1600     incompatible_libav_abi
1601     memalign_hack
1602     memory_poisoning
1603     neon_clobber_test
1604     pic
1605     pod2man
1606     raise_major
1607     thumb
1608     valgrind_backtrace
1609     xmm_clobber_test
1610 "
1611
1612 THREADS_LIST="
1613     pthreads
1614     os2threads
1615     w32threads
1616 "
1617
1618 ATOMICS_LIST="
1619     atomics_gcc
1620     atomics_suncc
1621     atomics_win32
1622 "
1623
1624 ARCH_LIST="
1625     aarch64
1626     alpha
1627     arm
1628     avr32
1629     avr32_ap
1630     avr32_uc
1631     bfin
1632     ia64
1633     m68k
1634     mips
1635     mips64
1636     parisc
1637     ppc
1638     ppc64
1639     s390
1640     sh4
1641     sparc
1642     sparc64
1643     tilegx
1644     tilepro
1645     tomi
1646     x86
1647     x86_32
1648     x86_64
1649 "
1650
1651 ARCH_EXT_LIST_ARM="
1652     armv5te
1653     armv6
1654     armv6t2
1655     armv8
1656     neon
1657     vfp
1658     vfpv3
1659     setend
1660 "
1661
1662 ARCH_EXT_LIST_MIPS="
1663     mipsfpu
1664     mips32r2
1665     mips64r2
1666     mips32r6
1667     mips64r6
1668     mipsdsp
1669     mipsdspr2
1670     msa
1671 "
1672
1673 ARCH_EXT_LIST_LOONGSON="
1674     loongson2
1675     loongson3
1676     mmi
1677 "
1678
1679 ARCH_EXT_LIST_X86_SIMD="
1680     aesni
1681     amd3dnow
1682     amd3dnowext
1683     avx
1684     avx2
1685     fma3
1686     fma4
1687     mmx
1688     mmxext
1689     sse
1690     sse2
1691     sse3
1692     sse4
1693     sse42
1694     ssse3
1695     xop
1696 "
1697
1698 ARCH_EXT_LIST_PPC="
1699     altivec
1700     dcbzl
1701     ldbrx
1702     power8
1703     ppc4xx
1704     vsx
1705 "
1706
1707 ARCH_EXT_LIST_X86="
1708     $ARCH_EXT_LIST_X86_SIMD
1709     cpunop
1710     i686
1711 "
1712
1713 ARCH_EXT_LIST="
1714     $ARCH_EXT_LIST_ARM
1715     $ARCH_EXT_LIST_PPC
1716     $ARCH_EXT_LIST_X86
1717     $ARCH_EXT_LIST_MIPS
1718     $ARCH_EXT_LIST_LOONGSON
1719 "
1720
1721 ARCH_FEATURES="
1722     aligned_stack
1723     fast_64bit
1724     fast_clz
1725     fast_cmov
1726     local_aligned_8
1727     local_aligned_16
1728     local_aligned_32
1729     simd_align_16
1730 "
1731
1732 BUILTIN_LIST="
1733     atomic_cas_ptr
1734     atomic_compare_exchange
1735     machine_rw_barrier
1736     MemoryBarrier
1737     mm_empty
1738     rdtsc
1739     sarestart
1740     sem_timedwait
1741     sync_val_compare_and_swap
1742 "
1743 HAVE_LIST_CMDLINE="
1744     inline_asm
1745     symver
1746     yasm
1747 "
1748
1749 HAVE_LIST_PUB="
1750     bigendian
1751     fast_unaligned
1752     incompatible_libav_abi
1753 "
1754
1755 HEADERS_LIST="
1756     alsa_asoundlib_h
1757     altivec_h
1758     arpa_inet_h
1759     asm_types_h
1760     cdio_paranoia_h
1761     cdio_paranoia_paranoia_h
1762     dispatch_dispatch_h
1763     dev_bktr_ioctl_bt848_h
1764     dev_bktr_ioctl_meteor_h
1765     dev_ic_bt8xx_h
1766     dev_video_bktr_ioctl_bt848_h
1767     dev_video_meteor_ioctl_meteor_h
1768     direct_h
1769     dirent_h
1770     dlfcn_h
1771     d3d11_h
1772     dxva_h
1773     ES2_gl_h
1774     gsm_h
1775     io_h
1776     mach_mach_time_h
1777     machine_ioctl_bt848_h
1778     machine_ioctl_meteor_h
1779     malloc_h
1780     opencv2_core_core_c_h
1781     openjpeg_2_1_openjpeg_h
1782     openjpeg_2_0_openjpeg_h
1783     openjpeg_1_5_openjpeg_h
1784     OpenGL_gl3_h
1785     poll_h
1786     sndio_h
1787     soundcard_h
1788     sys_mman_h
1789     sys_param_h
1790     sys_resource_h
1791     sys_select_h
1792     sys_soundcard_h
1793     sys_time_h
1794     sys_un_h
1795     sys_videoio_h
1796     termios_h
1797     udplite_h
1798     unistd_h
1799     valgrind_valgrind_h
1800     windows_h
1801     winsock2_h
1802 "
1803
1804 INTRINSICS_LIST="
1805     intrinsics_neon
1806 "
1807
1808 COMPLEX_FUNCS="
1809     cabs
1810     cexp
1811 "
1812
1813 MATH_FUNCS="
1814     atanf
1815     atan2f
1816     cbrt
1817     cbrtf
1818     copysign
1819     cosf
1820     erf
1821     exp2
1822     exp2f
1823     expf
1824     hypot
1825     isfinite
1826     isinf
1827     isnan
1828     ldexpf
1829     llrint
1830     llrintf
1831     log2
1832     log2f
1833     log10f
1834     lrint
1835     lrintf
1836     powf
1837     rint
1838     round
1839     roundf
1840     sinf
1841     trunc
1842     truncf
1843 "
1844
1845 SYSTEM_FUNCS="
1846     access
1847     aligned_malloc
1848     arc4random
1849     clock_gettime
1850     closesocket
1851     CommandLineToArgvW
1852     CoTaskMemFree
1853     CryptGenRandom
1854     dlopen
1855     fcntl
1856     flt_lim
1857     fork
1858     getaddrinfo
1859     gethrtime
1860     getopt
1861     GetProcessAffinityMask
1862     GetProcessMemoryInfo
1863     GetProcessTimes
1864     getrusage
1865     GetSystemTimeAsFileTime
1866     gettimeofday
1867     glob
1868     glXGetProcAddress
1869     gmtime_r
1870     inet_aton
1871     isatty
1872     jack_port_get_latency_range
1873     kbhit
1874     localtime_r
1875     lstat
1876     lzo1x_999_compress
1877     mach_absolute_time
1878     MapViewOfFile
1879     memalign
1880     mkstemp
1881     mmap
1882     mprotect
1883     nanosleep
1884     PeekNamedPipe
1885     posix_memalign
1886     pthread_cancel
1887     sched_getaffinity
1888     SetConsoleTextAttribute
1889     SetConsoleCtrlHandler
1890     setmode
1891     setrlimit
1892     Sleep
1893     strerror_r
1894     sysconf
1895     sysctl
1896     usleep
1897     UTGetOSTypeFromString
1898     VirtualAlloc
1899     wglGetProcAddress
1900 "
1901
1902 TOOLCHAIN_FEATURES="
1903     as_dn_directive
1904     as_func
1905     as_object_arch
1906     asm_mod_q
1907     attribute_may_alias
1908     attribute_packed
1909     ebp_available
1910     ebx_available
1911     gnu_as
1912     gnu_windres
1913     ibm_asm
1914     inline_asm_direct_symbol_refs
1915     inline_asm_labels
1916     inline_asm_nonlocal_labels
1917     pragma_deprecated
1918     rsync_contimeout
1919     symver_asm_label
1920     symver_gnu_asm
1921     vfp_args
1922     xform_asm
1923     xmm_clobbers
1924 "
1925
1926 TYPES_LIST="
1927     CONDITION_VARIABLE_Ptr
1928     socklen_t
1929     struct_addrinfo
1930     struct_group_source_req
1931     struct_ip_mreq_source
1932     struct_ipv6_mreq
1933     struct_pollfd
1934     struct_rusage_ru_maxrss
1935     struct_sctp_event_subscribe
1936     struct_sockaddr_in6
1937     struct_sockaddr_sa_len
1938     struct_sockaddr_storage
1939     struct_stat_st_mtim_tv_nsec
1940     struct_v4l2_frmivalenum_discrete
1941 "
1942
1943 HAVE_LIST="
1944     $ARCH_EXT_LIST
1945     $(add_suffix _external $ARCH_EXT_LIST)
1946     $(add_suffix _inline   $ARCH_EXT_LIST)
1947     $ARCH_FEATURES
1948     $ATOMICS_LIST
1949     $BUILTIN_LIST
1950     $COMPLEX_FUNCS
1951     $HAVE_LIST_CMDLINE
1952     $HAVE_LIST_PUB
1953     $HEADERS_LIST
1954     $INTRINSICS_LIST
1955     $MATH_FUNCS
1956     $SYSTEM_FUNCS
1957     $THREADS_LIST
1958     $TOOLCHAIN_FEATURES
1959     $TYPES_LIST
1960     atomics_native
1961     dos_paths
1962     dxva2_lib
1963     dxva2api_cobj
1964     libc_msvcrt
1965     libdc1394_1
1966     libdc1394_2
1967     makeinfo
1968     makeinfo_html
1969     perl
1970     pod2man
1971     sdl
1972     section_data_rel_ro
1973     texi2html
1974     threads
1975     vaapi_x11
1976     vdpau_x11
1977     winrt
1978     xlib
1979 "
1980
1981 # options emitted with CONFIG_ prefix but not available on the command line
1982 CONFIG_EXTRA="
1983     aandcttables
1984     ac3dsp
1985     audio_frame_queue
1986     audiodsp
1987     blockdsp
1988     bswapdsp
1989     cabac
1990     dirac_parse
1991     dvprofile
1992     exif
1993     faandct
1994     faanidct
1995     fdctdsp
1996     flacdsp
1997     fmtconvert
1998     frame_thread_encoder
1999     g722dsp
2000     golomb
2001     gplv3
2002     h263dsp
2003     h264chroma
2004     h264dsp
2005     h264pred
2006     h264qpel
2007     hpeldsp
2008     huffman
2009     huffyuvdsp
2010     huffyuvencdsp
2011     idctdsp
2012     iirfilter
2013     imdct15
2014     intrax8
2015     iso_media
2016     ividsp
2017     jpegtables
2018     lgplv3
2019     libx262
2020     llauddsp
2021     llviddsp
2022     lpc
2023     lzf
2024     me_cmp
2025     mpeg_er
2026     mpegaudio
2027     mpegaudiodsp
2028     mpegvideo
2029     mpegvideoenc
2030     mss34dsp
2031     pixblockdsp
2032     qpeldsp
2033     qsv
2034     qsvdec
2035     qsvenc
2036     rangecoder
2037     riffdec
2038     riffenc
2039     rtpdec
2040     rtpenc_chain
2041     rv34dsp
2042     sinewin
2043     snappy
2044     startcode
2045     texturedsp
2046     texturedspenc
2047     tpeldsp
2048     vc1dsp
2049     videodsp
2050     vp3dsp
2051     vp56dsp
2052     vp8dsp
2053     wma_freqs
2054     wmv2dsp
2055 "
2056
2057 CMDLINE_SELECT="
2058     $ARCH_EXT_LIST
2059     $CONFIG_LIST
2060     $HAVE_LIST_CMDLINE
2061     $THREADS_LIST
2062     asm
2063     cross_compile
2064     debug
2065     extra_warnings
2066     logging
2067     lto
2068     optimizations
2069     rpath
2070     stripping
2071 "
2072
2073 PATHS_LIST="
2074     bindir
2075     datadir
2076     docdir
2077     incdir
2078     libdir
2079     mandir
2080     pkgconfigdir
2081     prefix
2082     shlibdir
2083     install_name_dir
2084 "
2085
2086 CMDLINE_SET="
2087     $PATHS_LIST
2088     ar
2089     arch
2090     as
2091     assert_level
2092     build_suffix
2093     cc
2094     objcc
2095     cpu
2096     cross_prefix
2097     custom_allocator
2098     cxx
2099     dep_cc
2100     doxygen
2101     env
2102     extra_version
2103     gas
2104     host_cc
2105     host_cflags
2106     host_ld
2107     host_ldflags
2108     host_libs
2109     host_os
2110     install
2111     ld
2112     logfile
2113     malloc_prefix
2114     nm
2115     optflags
2116     pkg_config
2117     pkg_config_flags
2118     progs_suffix
2119     random_seed
2120     ranlib
2121     samples
2122     strip
2123     sws_max_filter_size
2124     sysinclude
2125     sysroot
2126     target_exec
2127     target_os
2128     target_path
2129     target_samples
2130     tempprefix
2131     toolchain
2132     valgrind
2133     yasmexe
2134 "
2135
2136 CMDLINE_APPEND="
2137     extra_cflags
2138     extra_cxxflags
2139     extra_objcflags
2140     host_cppflags
2141 "
2142
2143 # code dependency declarations
2144
2145 # architecture extensions
2146
2147 armv5te_deps="arm"
2148 armv6_deps="arm"
2149 armv6t2_deps="arm"
2150 armv8_deps="aarch64"
2151 neon_deps_any="aarch64 arm"
2152 intrinsics_neon_deps="neon"
2153 vfp_deps_any="aarch64 arm"
2154 vfpv3_deps="vfp"
2155 setend_deps="arm"
2156
2157 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2158
2159 mipsfpu_deps="mips"
2160 mipsdsp_deps="mips"
2161 mipsdspr2_deps="mips"
2162 mips32r2_deps="mips"
2163 mips32r6_deps="mips"
2164 mips64r2_deps="mips"
2165 mips64r6_deps="mips"
2166 msa_deps="mips"
2167 mmi_deps="mips"
2168
2169 altivec_deps="ppc"
2170 dcbzl_deps="ppc"
2171 ldbrx_deps="ppc"
2172 ppc4xx_deps="ppc"
2173 vsx_deps="altivec"
2174 power8_deps="vsx"
2175
2176 cpunop_deps="i686"
2177 x86_64_select="i686"
2178 x86_64_suggest="fast_cmov"
2179
2180 amd3dnow_deps="mmx"
2181 amd3dnowext_deps="amd3dnow"
2182 i686_deps="x86"
2183 mmx_deps="x86"
2184 mmxext_deps="mmx"
2185 sse_deps="mmxext"
2186 sse2_deps="sse"
2187 sse3_deps="sse2"
2188 ssse3_deps="sse3"
2189 sse4_deps="ssse3"
2190 sse42_deps="sse4"
2191 aesni_deps="sse42"
2192 avx_deps="sse42"
2193 xop_deps="avx"
2194 fma3_deps="avx"
2195 fma4_deps="avx"
2196 avx2_deps="avx"
2197
2198 mmx_external_deps="yasm"
2199 mmx_inline_deps="inline_asm"
2200 mmx_suggest="mmx_external mmx_inline"
2201
2202 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2203     eval dep=\$${ext}_deps
2204     eval ${ext}_external_deps='"${dep}_external"'
2205     eval ${ext}_inline_deps='"${dep}_inline"'
2206     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2207 done
2208
2209 aligned_stack_if_any="aarch64 ppc x86"
2210 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2211 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2212 fast_unaligned_if_any="aarch64 ppc x86"
2213 simd_align_16_if_any="altivec neon sse"
2214
2215 # system capabilities
2216 symver_if_any="symver_asm_label symver_gnu_asm"
2217 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2218
2219 # threading support
2220 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2221 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2222 atomics_win32_if="MemoryBarrier"
2223 atomics_native_if_any="$ATOMICS_LIST"
2224 w32threads_deps="atomics_native"
2225 threads_if_any="$THREADS_LIST"
2226
2227 # subsystems
2228 dct_select="rdft"
2229 dirac_parse_select="golomb"
2230 error_resilience_select="me_cmp"
2231 faandct_deps="faan fdctdsp"
2232 faanidct_deps="faan idctdsp"
2233 h264dsp_select="startcode"
2234 frame_thread_encoder_deps="encoders threads"
2235 intrax8_select="error_resilience"
2236 mdct_select="fft"
2237 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2238 mpeg_er_select="error_resilience"
2239 mpegaudio_select="mpegaudiodsp"
2240 mpegaudiodsp_select="dct"
2241 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2242 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2243 qsvdec_select="qsv"
2244 qsvenc_select="qsv"
2245 vc1dsp_select="h264chroma qpeldsp startcode"
2246 rdft_select="fft"
2247
2248 # decoders / encoders
2249 aac_decoder_select="imdct15 mdct sinewin"
2250 aac_fixed_decoder_select="mdct sinewin"
2251 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2252 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2253 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2254 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2255 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2256 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2257 adpcm_g722_decoder_select="g722dsp"
2258 adpcm_g722_encoder_select="g722dsp"
2259 aic_decoder_select="golomb idctdsp"
2260 alac_encoder_select="lpc"
2261 als_decoder_select="bswapdsp"
2262 amrnb_decoder_select="lsp"
2263 amrwb_decoder_select="lsp"
2264 amv_decoder_select="sp5x_decoder exif"
2265 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2266 ape_decoder_select="bswapdsp llauddsp"
2267 apng_decoder_select="zlib"
2268 apng_encoder_select="huffyuvencdsp zlib"
2269 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2270 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2271 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2272 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2273 atrac1_decoder_select="mdct sinewin"
2274 atrac3_decoder_select="mdct"
2275 atrac3p_decoder_select="mdct sinewin"
2276 avrn_decoder_select="exif jpegtables"
2277 bink_decoder_select="blockdsp hpeldsp"
2278 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2279 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2280 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2281 cllc_decoder_select="bswapdsp"
2282 comfortnoise_encoder_select="lpc"
2283 cook_decoder_select="audiodsp mdct sinewin"
2284 cscd_decoder_select="lzo"
2285 cscd_decoder_suggest="zlib"
2286 dca_decoder_select="mdct"
2287 dds_decoder_select="texturedsp"
2288 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2289 dnxhd_decoder_select="blockdsp idctdsp"
2290 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2291 dvvideo_decoder_select="dvprofile idctdsp"
2292 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2293 dxa_decoder_select="zlib"
2294 dxv_decoder_select="lzf texturedsp"
2295 eac3_decoder_select="ac3_decoder"
2296 eac3_encoder_select="ac3_encoder"
2297 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2298 eatgq_decoder_select="aandcttables"
2299 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2300 exr_decoder_select="zlib"
2301 ffv1_decoder_select="golomb rangecoder"
2302 ffv1_encoder_select="rangecoder"
2303 ffvhuff_decoder_select="huffyuv_decoder"
2304 ffvhuff_encoder_select="huffyuv_encoder"
2305 fic_decoder_select="golomb"
2306 flac_decoder_select="flacdsp golomb"
2307 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2308 flashsv2_decoder_select="zlib"
2309 flashsv2_encoder_select="zlib"
2310 flashsv_decoder_select="zlib"
2311 flashsv_encoder_select="zlib"
2312 flv_decoder_select="h263_decoder"
2313 flv_encoder_select="h263_encoder"
2314 fourxm_decoder_select="blockdsp bswapdsp"
2315 fraps_decoder_select="bswapdsp huffman"
2316 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2317 g729_decoder_select="audiodsp"
2318 h261_decoder_select="mpegvideo"
2319 h261_encoder_select="aandcttables mpegvideoenc"
2320 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2321 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2322 h263i_decoder_select="h263_decoder"
2323 h263p_decoder_select="h263_decoder"
2324 h263p_encoder_select="h263_encoder"
2325 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2326 h264_decoder_suggest="error_resilience"
2327 h264_qsv_decoder_deps="libmfx"
2328 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2329 h264_qsv_encoder_deps="libmfx"
2330 h264_qsv_encoder_select="qsvenc"
2331 hap_decoder_select="snappy texturedsp"
2332 hap_encoder_deps="libsnappy"
2333 hap_encoder_select="texturedspenc"
2334 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2335 hevc_qsv_decoder_deps="libmfx"
2336 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2337 hevc_qsv_encoder_deps="libmfx"
2338 hevc_qsv_encoder_select="qsvenc"
2339 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2340 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2341 iac_decoder_select="imc_decoder"
2342 imc_decoder_select="bswapdsp fft mdct sinewin"
2343 indeo3_decoder_select="hpeldsp"
2344 indeo4_decoder_select="ividsp"
2345 indeo5_decoder_select="ividsp"
2346 interplay_video_decoder_select="hpeldsp"
2347 jpegls_decoder_select="golomb mjpeg_decoder"
2348 jpegls_encoder_select="golomb"
2349 jv_decoder_select="blockdsp"
2350 lagarith_decoder_select="huffyuvdsp"
2351 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2352 loco_decoder_select="golomb"
2353 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2354 metasound_decoder_select="lsp mdct sinewin"
2355 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2356 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2357 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2358 mjpegb_decoder_select="mjpeg_decoder"
2359 mlp_decoder_select="mlp_parser"
2360 motionpixels_decoder_select="bswapdsp"
2361 mp1_decoder_select="mpegaudio"
2362 mp1float_decoder_select="mpegaudio"
2363 mp2_decoder_select="mpegaudio"
2364 mp2float_decoder_select="mpegaudio"
2365 mp3_decoder_select="mpegaudio"
2366 mp3adu_decoder_select="mpegaudio"
2367 mp3adufloat_decoder_select="mpegaudio"
2368 mp3float_decoder_select="mpegaudio"
2369 mp3on4_decoder_select="mpegaudio"
2370 mp3on4float_decoder_select="mpegaudio"
2371 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2372 mpc8_decoder_select="mpegaudiodsp"
2373 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2374 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2375 mpegvideo_decoder_select="mpegvideo"
2376 mpeg1video_decoder_select="mpegvideo"
2377 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2378 mpeg2video_decoder_select="mpegvideo"
2379 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2380 mpeg2_qsv_decoder_deps="libmfx"
2381 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2382 mpeg2_qsv_encoder_deps="libmfx"
2383 mpeg2_qsv_encoder_select="qsvenc"
2384 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2385 mpeg4_encoder_select="h263_encoder"
2386 msa1_decoder_select="mss34dsp"
2387 msmpeg4v1_decoder_select="h263_decoder"
2388 msmpeg4v2_decoder_select="h263_decoder"
2389 msmpeg4v2_encoder_select="h263_encoder"
2390 msmpeg4v3_decoder_select="h263_decoder"
2391 msmpeg4v3_encoder_select="h263_encoder"
2392 mss2_decoder_select="vc1_decoder mpegvideo"
2393 mts2_decoder_select="mss34dsp"
2394 mxpeg_decoder_select="mjpeg_decoder"
2395 nellymoser_decoder_select="mdct sinewin"
2396 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2397 nuv_decoder_select="idctdsp lzo"
2398 on2avc_decoder_select="mdct"
2399 opus_decoder_deps="swresample"
2400 opus_decoder_select="imdct15"
2401 png_decoder_select="zlib"
2402 png_encoder_select="huffyuvencdsp zlib"
2403 prores_decoder_select="blockdsp idctdsp"
2404 prores_encoder_select="fdctdsp"
2405 qcelp_decoder_select="lsp"
2406 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2407 ra_144_decoder_select="audiodsp"
2408 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2409 ralf_decoder_select="golomb"
2410 rawvideo_decoder_select="bswapdsp"
2411 rscc_decoder_select="zlib"
2412 rtjpeg_decoder_select="me_cmp"
2413 rv10_decoder_select="h263_decoder"
2414 rv10_encoder_select="h263_encoder"
2415 rv20_decoder_select="h263_decoder"
2416 rv20_encoder_select="h263_encoder"
2417 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2418 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2419 screenpresso_decoder_select="zlib"
2420 shorten_decoder_select="golomb"
2421 sipr_decoder_select="lsp"
2422 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2423 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2424 sonic_decoder_select="golomb rangecoder"
2425 sonic_encoder_select="golomb rangecoder"
2426 sonic_ls_encoder_select="golomb rangecoder"
2427 sp5x_decoder_select="mjpeg_decoder"
2428 svq1_decoder_select="hpeldsp"
2429 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2430 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2431 svq3_decoder_suggest="zlib"
2432 tak_decoder_select="audiodsp"
2433 tdsc_decoder_select="zlib mjpeg_decoder"
2434 theora_decoder_select="vp3_decoder"
2435 thp_decoder_select="mjpeg_decoder"
2436 tiff_decoder_suggest="zlib lzma"
2437 tiff_encoder_suggest="zlib"
2438 truehd_decoder_select="mlp_parser"
2439 truemotion2_decoder_select="bswapdsp"
2440 truespeech_decoder_select="bswapdsp"
2441 tscc_decoder_select="zlib"
2442 twinvq_decoder_select="mdct lsp sinewin"
2443 txd_decoder_select="texturedsp"
2444 utvideo_decoder_select="bswapdsp"
2445 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2446 vble_decoder_select="huffyuvdsp"
2447 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2448 vc1_qsv_decoder_deps="libmfx"
2449 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2450 vc1image_decoder_select="vc1_decoder"
2451 vorbis_decoder_select="mdct"
2452 vorbis_encoder_select="mdct"
2453 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2454 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2455 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2456 vp6a_decoder_select="vp6_decoder"
2457 vp6f_decoder_select="vp6_decoder"
2458 vp7_decoder_select="h264pred videodsp vp8dsp"
2459 vp8_decoder_select="h264pred videodsp vp8dsp"
2460 vp9_decoder_select="videodsp vp9_parser"
2461 webp_decoder_select="vp8_decoder exif"
2462 wmalossless_decoder_select="llauddsp"
2463 wmapro_decoder_select="mdct sinewin wma_freqs"
2464 wmav1_decoder_select="mdct sinewin wma_freqs"
2465 wmav1_encoder_select="mdct sinewin wma_freqs"
2466 wmav2_decoder_select="mdct sinewin wma_freqs"
2467 wmav2_encoder_select="mdct sinewin wma_freqs"
2468 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2469 wmv1_decoder_select="h263_decoder"
2470 wmv1_encoder_select="h263_encoder"
2471 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2472 wmv2_encoder_select="h263_encoder wmv2dsp"
2473 wmv3_decoder_select="vc1_decoder"
2474 wmv3image_decoder_select="wmv3_decoder"
2475 xma1_decoder_select="wmapro_decoder"
2476 xma2_decoder_select="wmapro_decoder"
2477 zerocodec_decoder_select="zlib"
2478 zlib_decoder_select="zlib"
2479 zlib_encoder_select="zlib"
2480 zmbv_decoder_select="zlib"
2481 zmbv_encoder_select="zlib"
2482
2483 # hardware accelerators
2484 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2485 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2486 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2487 vaapi_deps="va_va_h"
2488 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2489 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2490 vda_deps="vda_framework pthreads"
2491 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2492 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2493 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2494 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2495 xvmc_deps="X11_extensions_XvMClib_h"
2496
2497 h263_vaapi_hwaccel_deps="vaapi"
2498 h263_vaapi_hwaccel_select="h263_decoder"
2499 h263_videotoolbox_hwaccel_deps="videotoolbox"
2500 h263_videotoolbox_hwaccel_select="h263_decoder"
2501 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2502 h264_d3d11va_hwaccel_deps="d3d11va"
2503 h264_d3d11va_hwaccel_select="h264_decoder"
2504 h264_dxva2_hwaccel_deps="dxva2"
2505 h264_dxva2_hwaccel_select="h264_decoder"
2506 h264_mmal_decoder_deps="mmal"
2507 h264_mmal_decoder_select="mmal"
2508 h264_mmal_hwaccel_deps="mmal"
2509 h264_qsv_hwaccel_deps="libmfx"
2510 h264_vaapi_hwaccel_deps="vaapi"
2511 h264_vaapi_hwaccel_select="h264_decoder"
2512 h264_vda_decoder_deps="vda"
2513 h264_vda_decoder_select="h264_decoder"
2514 h264_vda_hwaccel_deps="vda"
2515 h264_vda_hwaccel_select="h264_decoder"
2516 h264_vda_old_hwaccel_deps="vda"
2517 h264_vda_old_hwaccel_select="h264_decoder"
2518 h264_vdpau_decoder_deps="vdpau"
2519 h264_vdpau_decoder_select="h264_decoder"
2520 h264_vdpau_hwaccel_deps="vdpau"
2521 h264_vdpau_hwaccel_select="h264_decoder"
2522 h264_videotoolbox_hwaccel_deps="videotoolbox"
2523 h264_videotoolbox_hwaccel_select="h264_decoder"
2524 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2525 hevc_d3d11va_hwaccel_select="hevc_decoder"
2526 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2527 hevc_dxva2_hwaccel_select="hevc_decoder"
2528 hevc_qsv_hwaccel_deps="libmfx"
2529 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2530 hevc_vaapi_hwaccel_select="hevc_decoder"
2531 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2532 hevc_vdpau_hwaccel_select="hevc_decoder"
2533 mpeg_vdpau_decoder_deps="vdpau"
2534 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2535 mpeg_xvmc_hwaccel_deps="xvmc"
2536 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2537 mpeg1_vdpau_decoder_deps="vdpau"
2538 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2539 mpeg1_vdpau_hwaccel_deps="vdpau"
2540 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2541 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2542 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2543 mpeg1_xvmc_hwaccel_deps="xvmc"
2544 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2545 mpeg2_crystalhd_decoder_select="crystalhd"
2546 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2547 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2548 mpeg2_dxva2_hwaccel_deps="dxva2"
2549 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2550 mpeg2_mmal_decoder_deps="mmal"
2551 mpeg2_mmal_decoder_select="mmal"
2552 mpeg2_mmal_hwaccel_deps="mmal"
2553 mpeg2_qsv_hwaccel_deps="libmfx"
2554 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2555 mpeg2_vaapi_hwaccel_deps="vaapi"
2556 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2557 mpeg2_vdpau_hwaccel_deps="vdpau"
2558 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2559 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2560 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2561 mpeg2_xvmc_hwaccel_deps="xvmc"
2562 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2563 mpeg4_crystalhd_decoder_select="crystalhd"
2564 mpeg4_mmal_decoder_deps="mmal"
2565 mpeg4_mmal_decoder_select="mmal"
2566 mpeg4_mmal_hwaccel_deps="mmal"
2567 mpeg4_vaapi_hwaccel_deps="vaapi"
2568 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2569 mpeg4_vdpau_decoder_deps="vdpau"
2570 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2571 mpeg4_vdpau_hwaccel_deps="vdpau"
2572 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2573 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2574 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2575 msmpeg4_crystalhd_decoder_select="crystalhd"
2576 vc1_crystalhd_decoder_select="crystalhd"
2577 vc1_d3d11va_hwaccel_deps="d3d11va"
2578 vc1_d3d11va_hwaccel_select="vc1_decoder"
2579 vc1_dxva2_hwaccel_deps="dxva2"
2580 vc1_dxva2_hwaccel_select="vc1_decoder"
2581 vc1_mmal_decoder_deps="mmal"
2582 vc1_mmal_decoder_select="mmal"
2583 vc1_mmal_hwaccel_deps="mmal"
2584 vc1_qsv_hwaccel_deps="libmfx"
2585 vc1_qsv_hwaccel_select="qsvdec_vc1"
2586 vc1_vaapi_hwaccel_deps="vaapi"
2587 vc1_vaapi_hwaccel_select="vc1_decoder"
2588 vc1_vdpau_decoder_deps="vdpau"
2589 vc1_vdpau_decoder_select="vc1_decoder"
2590 vc1_vdpau_hwaccel_deps="vdpau"
2591 vc1_vdpau_hwaccel_select="vc1_decoder"
2592 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2593 vp9_d3d11va_hwaccel_select="vp9_decoder"
2594 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2595 vp9_dxva2_hwaccel_select="vp9_decoder"
2596 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9"
2597 vp9_vaapi_hwaccel_select="vp9_decoder"
2598 wmv3_crystalhd_decoder_select="crystalhd"
2599 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2600 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2601 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2602 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2603 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2604
2605 # parsers
2606 h264_parser_select="h264_decoder"
2607 hevc_parser_select="golomb"
2608 mpegvideo_parser_select="mpegvideo"
2609 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2610 vc1_parser_select="vc1dsp"
2611
2612 # bitstream_filters
2613 mjpeg2jpeg_bsf_select="jpegtables"
2614
2615 # external libraries
2616 chromaprint_muxer_deps="chromaprint"
2617 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2618 h264_videotoolbox_encoder_select="bzlib zlib iconv"
2619 libcelt_decoder_deps="libcelt"
2620 libdcadec_decoder_deps="libdcadec"
2621 libfaac_encoder_deps="libfaac"
2622 libfaac_encoder_select="audio_frame_queue"
2623 libfdk_aac_decoder_deps="libfdk_aac"
2624 libfdk_aac_encoder_deps="libfdk_aac"
2625 libfdk_aac_encoder_select="audio_frame_queue"
2626 libgme_demuxer_deps="libgme"
2627 libgsm_decoder_deps="libgsm"
2628 libgsm_encoder_deps="libgsm"
2629 libgsm_ms_decoder_deps="libgsm"
2630 libgsm_ms_encoder_deps="libgsm"
2631 libilbc_decoder_deps="libilbc"
2632 libilbc_encoder_deps="libilbc"
2633 libkvazaar_encoder_deps="libkvazaar"
2634 libmodplug_demuxer_deps="libmodplug"
2635 libmp3lame_encoder_deps="libmp3lame"
2636 libmp3lame_encoder_select="audio_frame_queue"
2637 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2638 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2639 libopencore_amrnb_encoder_select="audio_frame_queue"
2640 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2641 libopenh264_encoder_deps="libopenh264"
2642 libopenjpeg_decoder_deps="libopenjpeg"
2643 libopenjpeg_encoder_deps="libopenjpeg"
2644 libopus_decoder_deps="libopus"
2645 libopus_encoder_deps="libopus"
2646 libopus_encoder_select="audio_frame_queue"
2647 libschroedinger_decoder_deps="libschroedinger"
2648 libschroedinger_encoder_deps="libschroedinger"
2649 libshine_encoder_deps="libshine"
2650 libshine_encoder_select="audio_frame_queue"
2651 libspeex_decoder_deps="libspeex"
2652 libspeex_encoder_deps="libspeex"
2653 libspeex_encoder_select="audio_frame_queue"
2654 libtheora_encoder_deps="libtheora"
2655 libtwolame_encoder_deps="libtwolame"
2656 libutvideo_decoder_deps="libutvideo"
2657 libutvideo_encoder_deps="libutvideo"
2658 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2659 libvorbis_decoder_deps="libvorbis"
2660 libvorbis_encoder_deps="libvorbis"
2661 libvorbis_encoder_select="audio_frame_queue"
2662 libvpx_vp8_decoder_deps="libvpx"
2663 libvpx_vp8_encoder_deps="libvpx"
2664 libvpx_vp9_decoder_deps="libvpx"
2665 libvpx_vp9_encoder_deps="libvpx"
2666 libwavpack_encoder_deps="libwavpack"
2667 libwebp_encoder_deps="libwebp"
2668 libwebp_anim_encoder_deps="libwebp"
2669 libx262_encoder_deps="libx262"
2670 libx264_encoder_deps="libx264"
2671 libx264rgb_encoder_deps="libx264"
2672 libx264rgb_encoder_select="libx264_encoder"
2673 libx265_encoder_deps="libx265"
2674 libxavs_encoder_deps="libxavs"
2675 libxvid_encoder_deps="libxvid"
2676 libzvbi_teletext_decoder_deps="libzvbi"
2677 nvenc_encoder_deps="nvenc"
2678 nvenc_h264_encoder_deps="nvenc"
2679 nvenc_hevc_encoder_deps="nvenc"
2680 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2681 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2682 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2683 videotoolbox_encoder_suggest="vda_framework"
2684
2685 # demuxers / muxers
2686 ac3_demuxer_select="ac3_parser"
2687 asf_demuxer_select="riffdec"
2688 asf_o_demuxer_select="riffdec"
2689 asf_muxer_select="riffenc"
2690 asf_stream_muxer_select="asf_muxer"
2691 avi_demuxer_select="iso_media riffdec exif"
2692 avi_muxer_select="riffenc"
2693 avisynth_demuxer_deps="avisynth"
2694 avisynth_demuxer_select="riffdec"
2695 caf_demuxer_select="iso_media riffdec"
2696 dash_muxer_select="mp4_muxer"
2697 dirac_demuxer_select="dirac_parser"
2698 dts_demuxer_select="dca_parser"
2699 dtshd_demuxer_select="dca_parser"
2700 dv_demuxer_select="dvprofile"
2701 dv_muxer_select="dvprofile"
2702 dxa_demuxer_select="riffdec"
2703 eac3_demuxer_select="ac3_parser"
2704 f4v_muxer_select="mov_muxer"
2705 flac_demuxer_select="flac_parser"
2706 hds_muxer_select="flv_muxer"
2707 hls_muxer_select="mpegts_muxer"
2708 image2_alias_pix_demuxer_select="image2_demuxer"
2709 image2_brender_pix_demuxer_select="image2_demuxer"
2710 ipod_muxer_select="mov_muxer"
2711 ismv_muxer_select="mov_muxer"
2712 libnut_demuxer_deps="libnut"
2713 libnut_muxer_deps="libnut"
2714 matroska_audio_muxer_select="matroska_muxer"
2715 matroska_demuxer_select="iso_media riffdec"
2716 matroska_demuxer_suggest="bzlib lzo zlib"
2717 matroska_muxer_select="iso_media riffenc"
2718 mmf_muxer_select="riffenc"
2719 mov_demuxer_select="iso_media riffdec"
2720 mov_demuxer_suggest="zlib"
2721 mov_muxer_select="iso_media riffenc rtpenc_chain"
2722 mp3_demuxer_select="mpegaudio_parser"
2723 mp4_muxer_select="mov_muxer"
2724 mpegts_demuxer_select="iso_media"
2725 mpegts_muxer_select="adts_muxer latm_muxer"
2726 mpegtsraw_demuxer_select="mpegts_demuxer"
2727 mxf_d10_muxer_select="mxf_muxer"
2728 mxf_opatom_muxer_select="mxf_muxer"
2729 nut_muxer_select="riffenc"
2730 nuv_demuxer_select="riffdec"
2731 oga_muxer_select="ogg_muxer"
2732 ogg_demuxer_select="dirac_parse"
2733 opus_muxer_select="ogg_muxer"
2734 psp_muxer_select="mov_muxer"
2735 rtp_demuxer_select="sdp_demuxer"
2736 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2737 rtsp_demuxer_select="http_protocol rtpdec"
2738 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2739 sap_demuxer_select="sdp_demuxer"
2740 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2741 sdp_demuxer_select="rtpdec"
2742 smoothstreaming_muxer_select="ismv_muxer"
2743 spdif_muxer_select="aac_parser"
2744 spx_muxer_select="ogg_muxer"
2745 swf_demuxer_suggest="zlib"
2746 tak_demuxer_select="tak_parser"
2747 tg2_muxer_select="mov_muxer"
2748 tgp_muxer_select="mov_muxer"
2749 vobsub_demuxer_select="mpegps_demuxer"
2750 w64_demuxer_select="wav_demuxer"
2751 w64_muxer_select="wav_muxer"
2752 wav_demuxer_select="riffdec"
2753 wav_muxer_select="riffenc"
2754 webm_muxer_select="iso_media riffenc"
2755 webm_dash_manifest_demuxer_select="matroska_demuxer"
2756 wtv_demuxer_select="mpegts_demuxer riffdec"
2757 wtv_muxer_select="mpegts_muxer riffenc"
2758 xmv_demuxer_select="riffdec"
2759 xwma_demuxer_select="riffdec"
2760
2761 # indevs / outdevs
2762 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2763 alsa_outdev_deps="alsa_asoundlib_h"
2764 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2765 avfoundation_indev_select="avfoundation"
2766 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2767 caca_outdev_deps="libcaca"
2768 decklink_indev_deps="decklink pthreads"
2769 decklink_indev_extralibs="-lstdc++"
2770 decklink_outdev_deps="decklink pthreads"
2771 decklink_outdev_extralibs="-lstdc++"
2772 dshow_indev_deps="IBaseFilter"
2773 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2774 dv1394_indev_deps="dv1394"
2775 dv1394_indev_select="dv_demuxer"
2776 fbdev_indev_deps="linux_fb_h"
2777 fbdev_outdev_deps="linux_fb_h"
2778 gdigrab_indev_deps="CreateDIBSection"
2779 gdigrab_indev_extralibs="-lgdi32"
2780 gdigrab_indev_select="bmp_decoder"
2781 iec61883_indev_deps="libiec61883"
2782 jack_indev_deps="jack_jack_h"
2783 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2784 lavfi_indev_deps="avfilter"
2785 libcdio_indev_deps="libcdio"
2786 libdc1394_indev_deps="libdc1394"
2787 libv4l2_indev_deps="libv4l2"
2788 openal_indev_deps="openal"
2789 opengl_outdev_deps="opengl"
2790 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2791 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2792 pulse_indev_deps="libpulse"
2793 pulse_outdev_deps="libpulse"
2794 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2795 qtkit_indev_select="qtkit"
2796 sdl_outdev_deps="sdl"
2797 sndio_indev_deps="sndio_h"
2798 sndio_outdev_deps="sndio_h"
2799 v4l_indev_deps="linux_videodev_h"
2800 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2801 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2802 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2803 vfwcap_indev_extralibs="-lavicap32"
2804 x11grab_indev_deps="x11grab"
2805 x11grab_xcb_indev_deps="libxcb"
2806 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2807 xv_outdev_extralibs="-lXv -lX11 -lXext"
2808
2809 # protocols
2810 async_protocol_deps="threads"
2811 bluray_protocol_deps="libbluray"
2812 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2813 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2814 ffrtmpcrypt_protocol_select="tcp_protocol"
2815 ffrtmphttp_protocol_deps="!librtmp_protocol"
2816 ffrtmphttp_protocol_select="http_protocol"
2817 ftp_protocol_select="tcp_protocol"
2818 gopher_protocol_select="network"
2819 http_protocol_select="tcp_protocol"
2820 httpproxy_protocol_select="tcp_protocol"
2821 https_protocol_select="tls_protocol"
2822 icecast_protocol_select="http_protocol"
2823 librtmp_protocol_deps="librtmp"
2824 librtmpe_protocol_deps="librtmp"
2825 librtmps_protocol_deps="librtmp"
2826 librtmpt_protocol_deps="librtmp"
2827 librtmpte_protocol_deps="librtmp"
2828 libsmbclient_protocol_deps="libsmbclient gplv3"
2829 libssh_protocol_deps="libssh"
2830 mmsh_protocol_select="http_protocol"
2831 mmst_protocol_select="network"
2832 rtmp_protocol_deps="!librtmp_protocol"
2833 rtmp_protocol_select="tcp_protocol"
2834 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2835 rtmps_protocol_deps="!librtmp_protocol"
2836 rtmps_protocol_select="tls_protocol"
2837 rtmpt_protocol_select="ffrtmphttp_protocol"
2838 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2839 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2840 rtp_protocol_select="udp_protocol"
2841 sctp_protocol_deps="struct_sctp_event_subscribe"
2842 sctp_protocol_select="network"
2843 srtp_protocol_select="rtp_protocol"
2844 tcp_protocol_select="network"
2845 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
2846 tls_gnutls_protocol_select="tcp_protocol"
2847 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
2848 tls_openssl_protocol_select="tcp_protocol"
2849 tls_schannel_protocol_deps="schannel"
2850 tls_schannel_protocol_select="tcp_protocol"
2851 tls_securetransport_protocol_deps="securetransport"
2852 tls_securetransport_protocol_select="tcp_protocol"
2853 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2854 udp_protocol_select="network"
2855 udplite_protocol_select="network"
2856 unix_protocol_deps="sys_un_h"
2857 unix_protocol_select="network"
2858
2859 # filters
2860 afftfilt_filter_deps="avcodec"
2861 afftfilt_filter_select="fft"
2862 amovie_filter_deps="avcodec avformat"
2863 aresample_filter_deps="swresample"
2864 ass_filter_deps="libass"
2865 asyncts_filter_deps="avresample"
2866 atempo_filter_deps="avcodec"
2867 atempo_filter_select="rdft"
2868 azmq_filter_deps="libzmq"
2869 blackframe_filter_deps="gpl"
2870 boxblur_filter_deps="gpl"
2871 bs2b_filter_deps="libbs2b"
2872 colormatrix_filter_deps="gpl"
2873 cover_rect_filter_deps="avcodec avformat gpl"
2874 cropdetect_filter_deps="gpl"
2875 delogo_filter_deps="gpl"
2876 deshake_filter_select="pixelutils"
2877 drawtext_filter_deps="libfreetype"
2878 ebur128_filter_deps="gpl"
2879 eq_filter_deps="gpl"
2880 fftfilt_filter_deps="avcodec"
2881 fftfilt_filter_select="rdft"
2882 find_rect_filter_deps="avcodec avformat gpl"
2883 firequalizer_filter_deps="avcodec"
2884 firequalizer_filter_select="rdft"
2885 flite_filter_deps="libflite"
2886 frei0r_filter_deps="frei0r dlopen"
2887 frei0r_src_filter_deps="frei0r dlopen"
2888 fspp_filter_deps="gpl"
2889 geq_filter_deps="gpl"
2890 histeq_filter_deps="gpl"
2891 hqdn3d_filter_deps="gpl"
2892 hwupload_cuda_filter_deps="cuda"
2893 interlace_filter_deps="gpl"
2894 kerndeint_filter_deps="gpl"
2895 ladspa_filter_deps="ladspa dlopen"
2896 mcdeint_filter_deps="avcodec gpl"
2897 movie_filter_deps="avcodec avformat"
2898 mpdecimate_filter_deps="gpl"
2899 mpdecimate_filter_select="pixelutils"
2900 mptestsrc_filter_deps="gpl"
2901 negate_filter_deps="lut_filter"
2902 nnedi_filter_deps="gpl"
2903 ocr_filter_deps="libtesseract"
2904 ocv_filter_deps="libopencv"
2905 owdenoise_filter_deps="gpl"
2906 pan_filter_deps="swresample"
2907 perspective_filter_deps="gpl"
2908 phase_filter_deps="gpl"
2909 pp7_filter_deps="gpl"
2910 pp_filter_deps="gpl postproc"
2911 pullup_filter_deps="gpl"
2912 removelogo_filter_deps="avcodec avformat swscale"
2913 repeatfields_filter_deps="gpl"
2914 resample_filter_deps="avresample"
2915 rubberband_filter_deps="librubberband"
2916 sab_filter_deps="gpl swscale"
2917 scale2ref_filter_deps="swscale"
2918 scale_filter_deps="swscale"
2919 select_filter_select="pixelutils"
2920 showcqt_filter_deps="avcodec avformat swscale"
2921 showcqt_filter_select="fft"
2922 showfreqs_filter_deps="avcodec"
2923 showfreqs_filter_select="fft"
2924 showspectrum_filter_deps="avcodec"
2925 showspectrum_filter_select="fft"
2926 showspectrumpic_filter_deps="avcodec"
2927 showspectrumpic_filter_select="fft"
2928 smartblur_filter_deps="gpl swscale"
2929 sofalizer_filter_deps="netcdf avcodec"
2930 sofalizer_filter_select="fft"
2931 spectrumsynth_filter_deps="avcodec"
2932 spectrumsynth_filter_select="fft"
2933 spp_filter_deps="gpl avcodec"
2934 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2935 stereo3d_filter_deps="gpl"
2936 subtitles_filter_deps="avformat avcodec libass"
2937 super2xsai_filter_deps="gpl"
2938 pixfmts_super2xsai_test_deps="super2xsai_filter"
2939 tinterlace_filter_deps="gpl"
2940 tinterlace_merge_test_deps="tinterlace_filter"
2941 tinterlace_pad_test_deps="tinterlace_filter"
2942 uspp_filter_deps="gpl avcodec"
2943 vidstabdetect_filter_deps="libvidstab"
2944 vidstabtransform_filter_deps="libvidstab"
2945 zmq_filter_deps="libzmq"
2946 zoompan_filter_deps="swscale"
2947 zscale_filter_deps="libzimg"
2948
2949 # examples
2950 avcodec_example_deps="avcodec avutil"
2951 avio_dir_cmd="avformat avutil"
2952 avio_reading="avformat avcodec avutil"
2953 decoding_encoding_example_deps="avcodec avformat avutil"
2954 demuxing_decoding_example_deps="avcodec avformat avutil"
2955 extract_mvs_example_deps="avcodec avformat avutil"
2956 filter_audio_example_deps="avfilter avutil"
2957 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2958 filtering_video_example_deps="avfilter avcodec avformat avutil"
2959 metadata_example_deps="avformat avutil"
2960 muxing_example_deps="avcodec avformat avutil swscale"
2961 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2962 remuxing_example_deps="avcodec avformat avutil"
2963 resampling_audio_example_deps="avutil swresample"
2964 scaling_video_example_deps="avutil swscale"
2965 transcode_aac_example_deps="avcodec avformat swresample"
2966 transcoding_example_deps="avfilter avcodec avformat avutil"
2967
2968 # libraries, in linking order
2969 avcodec_deps="avutil"
2970 avdevice_deps="avformat avcodec avutil"
2971 avfilter_deps="avutil"
2972 avformat_deps="avcodec avutil"
2973 avresample_deps="avutil"
2974 postproc_deps="avutil gpl"
2975 swresample_deps="avutil"
2976 swscale_deps="avutil"
2977
2978 # programs
2979 ffmpeg_deps="avcodec avfilter avformat swresample"
2980 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2981                null_filter
2982                setpts_filter trim_filter"
2983 ffplay_deps="avcodec avformat swscale swresample sdl"
2984 ffplay_libs='$sdl_libs'
2985 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2986 ffprobe_deps="avcodec avformat"
2987 ffserver_deps="avformat fork sarestart"
2988 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2989
2990 # documentation
2991 podpages_deps="perl"
2992 manpages_deps="perl pod2man"
2993 htmlpages_deps="perl"
2994 htmlpages_deps_any="makeinfo_html texi2html"
2995 txtpages_deps="perl makeinfo"
2996 doc_deps_any="manpages htmlpages podpages txtpages"
2997
2998 # default parameters
2999
3000 logfile="config.log"
3001
3002 # installation paths
3003 prefix_default="/usr/local"
3004 bindir_default='${prefix}/bin'
3005 datadir_default='${prefix}/share/ffmpeg'
3006 docdir_default='${prefix}/share/doc/ffmpeg'
3007 incdir_default='${prefix}/include'
3008 libdir_default='${prefix}/lib'
3009 mandir_default='${prefix}/share/man'
3010
3011 # toolchain
3012 ar_default="ar"
3013 cc_default="gcc"
3014 cxx_default="g++"
3015 host_cc_default="gcc"
3016 cp_f="cp -f"
3017 doxygen_default="doxygen"
3018 install="install"
3019 ln_s="ln -s -f"
3020 nm_default="nm -g"
3021 objformat="elf"
3022 pkg_config_default=pkg-config
3023 ranlib_default="ranlib"
3024 strip_default="strip"
3025 yasmexe_default="yasm"
3026 windres_default="windres"
3027
3028 # OS
3029 target_os_default=$(tolower $(uname -s))
3030 host_os=$target_os_default
3031
3032 # machine
3033 if test "$target_os_default" = aix; then
3034     arch_default=$(uname -p)
3035     strip_default="strip -X32_64"
3036 else
3037     arch_default=$(uname -m)
3038 fi
3039 cpu="generic"
3040 intrinsics="none"
3041
3042 # configurable options
3043 enable $PROGRAM_LIST
3044 enable $DOCUMENT_LIST
3045 enable $EXAMPLE_LIST
3046 enable $(filter_out avresample $LIBRARY_LIST)
3047 enable stripping
3048
3049 enable asm
3050 enable debug
3051 enable doc
3052 enable faan faandct faanidct
3053 enable optimizations
3054 enable runtime_cpudetect
3055 enable safe_bitstream_reader
3056 enable static
3057 enable swscale_alpha
3058 enable valgrind_backtrace
3059
3060 sws_max_filter_size_default=256
3061 set_default sws_max_filter_size
3062
3063 # Enable hwaccels by default.
3064 enable d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3065 enable xlib
3066
3067 enable vda_framework videotoolbox videotoolbox_encoder
3068
3069 # build settings
3070 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3071 LIBPREF="lib"
3072 LIBSUF=".a"
3073 FULLNAME='$(NAME)$(BUILDSUF)'
3074 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3075 SLIBPREF="lib"
3076 SLIBSUF=".so"
3077 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3078 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3079 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3080 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3081 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3082 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3083
3084 asflags_filter=echo
3085 cflags_filter=echo
3086 ldflags_filter=echo
3087
3088 AS_C='-c'
3089 AS_O='-o $@'
3090 CC_C='-c'
3091 CC_E='-E -o $@'
3092 CC_O='-o $@'
3093 CXX_C='-c'
3094 CXX_O='-o $@'
3095 OBJCC_C='-c'
3096 OBJCC_E='-E -o $@'
3097 OBJCC_O='-o $@'
3098 LD_O='-o $@'
3099 LD_LIB='-l%'
3100 LD_PATH='-L'
3101 HOSTCC_C='-c'
3102 HOSTCC_E='-E -o $@'
3103 HOSTCC_O='-o $@'
3104 HOSTLD_O='-o $@'
3105
3106 host_libs='-lm'
3107 host_cflags_filter=echo
3108 host_ldflags_filter=echo
3109
3110 target_path='$(CURDIR)'
3111
3112 # since the object filename is not given with the -MM flag, the compiler
3113 # is only able to print the basename, and we must add the path ourselves
3114 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3115 DEPFLAGS='-MM'
3116
3117 # find source path
3118 if test -f configure; then
3119     source_path=.
3120 else
3121     source_path=$(cd $(dirname "$0"); pwd)
3122     case "$source_path" in
3123         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3124     esac
3125     test -e "$source_path/config.h" &&
3126         die "Out of tree builds are impossible with config.h in source dir."
3127 fi
3128
3129 for v in "$@"; do
3130     r=${v#*=}
3131     l=${v%"$r"}
3132     r=$(sh_quote "$r")
3133     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3134 done
3135
3136 find_things(){
3137     thing=$1
3138     pattern=$2
3139     file=$source_path/$3
3140     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3141 }
3142
3143 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3144 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3145 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3146 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3147 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
3148 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3149 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3150 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3151 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3152 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3153
3154 find_things_extern(){
3155     thing=$1
3156     pattern=$2
3157     file=$source_path/$3
3158     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3159 }
3160
3161 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3162
3163 ALL_COMPONENTS="
3164     $BSF_LIST
3165     $DECODER_LIST
3166     $DEMUXER_LIST
3167     $ENCODER_LIST
3168     $FILTER_LIST
3169     $HWACCEL_LIST
3170     $INDEV_LIST
3171     $MUXER_LIST
3172     $OUTDEV_LIST
3173     $PARSER_LIST
3174     $PROTOCOL_LIST
3175 "
3176
3177 for n in $COMPONENT_LIST; do
3178     v=$(toupper ${n%s})_LIST
3179     eval enable \$$v
3180     eval ${n}_if_any="\$$v"
3181 done
3182
3183 enable $ARCH_EXT_LIST
3184
3185 die_unknown(){
3186     echo "Unknown option \"$1\"."
3187     echo "See $0 --help for available options."
3188     exit 1
3189 }
3190
3191 print_in_columns() {
3192     cols=$(expr $ncols / 24)
3193     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3194 }
3195
3196 show_list() {
3197     suffix=_$1
3198     shift
3199     echo $* | sed s/$suffix//g | print_in_columns
3200     exit 0
3201 }
3202
3203 rand_list(){
3204     IFS=', '
3205     set -- $*
3206     unset IFS
3207     for thing; do
3208         comp=${thing%:*}
3209         prob=${thing#$comp}
3210         prob=${prob#:}
3211         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3212         echo "prob ${prob:-0.5}"
3213         printf '%s\n' $comp
3214     done
3215 }
3216
3217 do_random(){
3218     action=$1
3219     shift
3220     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3221     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3222 }
3223
3224 for opt do
3225     optval="${opt#*=}"
3226     case "$opt" in
3227         --extra-ldflags=*)
3228             add_ldflags $optval
3229         ;;
3230         --extra-ldexeflags=*)
3231             add_ldexeflags $optval
3232         ;;
3233         --extra-ldlibflags=*)
3234             add_ldlibflags $optval
3235         ;;
3236         --extra-libs=*)
3237             add_extralibs $optval
3238         ;;
3239         --disable-devices)
3240             disable $INDEV_LIST $OUTDEV_LIST
3241         ;;
3242         --enable-debug=*)
3243             debuglevel="$optval"
3244         ;;
3245         --disable-programs)
3246             disable $PROGRAM_LIST
3247         ;;
3248         --disable-everything)
3249             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3250         ;;
3251         --disable-all)
3252             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3253             disable $LIBRARY_LIST $PROGRAM_LIST doc
3254             enable avutil
3255         ;;
3256         --enable-random|--disable-random)
3257             action=${opt%%-random}
3258             do_random ${action#--} $COMPONENT_LIST
3259         ;;
3260         --enable-random=*|--disable-random=*)
3261             action=${opt%%-random=*}
3262             do_random ${action#--} $optval
3263         ;;
3264         --enable-*=*|--disable-*=*)
3265             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3266             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3267             eval list=\$$(toupper $thing)_LIST
3268             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3269             list=$(filter "$name" $list)
3270             [ "$list" = "" ] && warn "Option $opt did not match anything"
3271             $action $list
3272         ;;
3273         --enable-?*|--disable-?*)
3274             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3275             if is_in $option $COMPONENT_LIST; then
3276                 test $action = disable && action=unset
3277                 eval $action \$$(toupper ${option%s})_LIST
3278             elif is_in $option $CMDLINE_SELECT; then
3279                 $action $option
3280             else
3281                 die_unknown $opt
3282             fi
3283         ;;
3284         --list-*)
3285             NAME="${opt#--list-}"
3286             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3287             NAME=${NAME%s}
3288             eval show_list $NAME \$$(toupper $NAME)_LIST
3289         ;;
3290         --help|-h) show_help
3291         ;;
3292         --fatal-warnings) enable fatal_warnings
3293         ;;
3294         *)
3295             optname="${opt%%=*}"
3296             optname="${optname#--}"
3297             optname=$(echo "$optname" | sed 's/-/_/g')
3298             if is_in $optname $CMDLINE_SET; then
3299                 eval $optname='$optval'
3300             elif is_in $optname $CMDLINE_APPEND; then
3301                 append $optname "$optval"
3302             else
3303                 die_unknown $opt
3304             fi
3305         ;;
3306     esac
3307 done
3308
3309 for e in $env; do
3310     eval "export $e"
3311 done
3312
3313 disabled logging && logfile=/dev/null
3314
3315 # Disable all the library-specific components if the library itself
3316 # is disabled, see AVCODEC_LIST and following _LIST variables.
3317
3318 disable_components(){
3319     disabled ${1} && disable $(
3320         eval components="\$$(toupper ${1})_COMPONENTS"
3321         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3322     )
3323 }
3324
3325 map 'disable_components $v' $LIBRARY_LIST
3326
3327 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3328 set >> $logfile
3329
3330 test -n "$valgrind" && toolchain="valgrind-memcheck"
3331
3332 case "$toolchain" in
3333     *-asan)
3334         cc_default="${toolchain%-asan}"
3335         add_cflags  -fsanitize=address
3336         add_ldflags -fsanitize=address
3337     ;;
3338     *-tsan)
3339         cc_default="${toolchain%-tsan}"
3340         add_cflags  -fsanitize=thread -pie
3341         add_ldflags -fsanitize=thread -pie
3342         case "$toolchain" in
3343             gcc-tsan)
3344                 add_cflags  -fPIC
3345                 add_ldflags -fPIC
3346                 ;;
3347         esac
3348     ;;
3349     *-usan)
3350         cc_default="${toolchain%-usan}"
3351         add_cflags  -fsanitize=undefined
3352         add_ldflags -fsanitize=undefined
3353     ;;
3354     valgrind-*)
3355         target_exec_default="valgrind"
3356         case "$toolchain" in
3357             valgrind-massif)
3358                 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"
3359                 ;;
3360             valgrind-memcheck)
3361                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3362                 ;;
3363         esac
3364     ;;
3365     msvc)
3366         # Check whether the current MSVC version needs the C99 converter.
3367         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3368         # support enough of C99 to build ffmpeg. Default to the new
3369         # behaviour if the regexp was unable to match anything, since this
3370         # successfully parses the version number of existing supported
3371         # versions that require the converter (MSVC 2010 and 2012).
3372         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3373         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3374             cc_default="cl"
3375         else
3376             cc_default="c99wrap cl"
3377         fi
3378         ld_default="$source_path/compat/windows/mslink"
3379         nm_default="dumpbin -symbols"
3380         ar_default="lib"
3381         case "$arch" in
3382         arm*)
3383             as_default="armasm"
3384             ;;
3385         esac
3386         target_os_default="win32"
3387         # Use a relative path for TMPDIR. This makes sure all the
3388         # ffconf temp files are written with a relative path, avoiding
3389         # issues with msys/win32 path conversion for MSVC parameters
3390         # such as -Fo<file> or -out:<file>.
3391         TMPDIR=.
3392     ;;
3393     icl)
3394         cc_default="icl"
3395         ld_default="xilink"
3396         nm_default="dumpbin -symbols"
3397         ar_default="xilib"
3398         target_os_default="win32"
3399         TMPDIR=.
3400     ;;
3401     gcov)
3402         add_cflags  -fprofile-arcs -ftest-coverage
3403         add_ldflags -fprofile-arcs -ftest-coverage
3404     ;;
3405     hardened)
3406         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3407         add_cflags   -fno-strict-overflow -fstack-protector-all
3408         add_ldflags  -Wl,-z,relro -Wl,-z,now
3409     ;;
3410     ?*)
3411         die "Unknown toolchain $toolchain"
3412     ;;
3413 esac
3414
3415 test -n "$cross_prefix" && enable cross_compile
3416
3417 if enabled cross_compile; then
3418     test -n "$arch" && test -n "$target_os" ||
3419         die "Must specify target arch and OS when cross-compiling"
3420 fi
3421
3422 ar_default="${cross_prefix}${ar_default}"
3423 cc_default="${cross_prefix}${cc_default}"
3424 cxx_default="${cross_prefix}${cxx_default}"
3425 nm_default="${cross_prefix}${nm_default}"
3426 pkg_config_default="${cross_prefix}${pkg_config_default}"
3427 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3428     ranlib_default="${cross_prefix}${ranlib_default} -D"
3429 else
3430     ranlib_default="${cross_prefix}${ranlib_default}"
3431 fi
3432 strip_default="${cross_prefix}${strip_default}"
3433 windres_default="${cross_prefix}${windres_default}"
3434
3435 sysinclude_default="${sysroot}/usr/include"
3436
3437 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3438     target_exec target_os yasmexe
3439 enabled cross_compile || host_cc_default=$cc
3440 set_default host_cc
3441
3442 pkg_config_fail_message=""
3443 if ! $pkg_config --version >/dev/null 2>&1; then
3444     warn "$pkg_config not found, library detection may fail."
3445     pkg_config=false
3446 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3447     pkg_config_fail_message="
3448 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3449 fi
3450
3451 if test $doxygen != $doxygen_default && \
3452   ! $doxygen --version >/dev/null 2>&1; then
3453     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3454 fi
3455
3456 exesuf() {
3457     case $1 in
3458         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3459     esac
3460 }
3461
3462 EXESUF=$(exesuf $target_os)
3463 HOSTEXESUF=$(exesuf $host_os)
3464
3465 # set temporary file name
3466 : ${TMPDIR:=$TEMPDIR}
3467 : ${TMPDIR:=$TMP}
3468 : ${TMPDIR:=/tmp}
3469
3470 if [ -n "$tempprefix" ] ; then
3471     mktemp(){
3472         echo $tempprefix.${HOSTNAME}.${UID}
3473     }
3474 elif ! check_cmd mktemp -u XXXXXX; then
3475     # simple replacement for missing mktemp
3476     # NOT SAFE FOR GENERAL USE
3477     mktemp(){
3478         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3479     }
3480 fi
3481
3482 tmpfile(){
3483     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3484         (set -C; exec > $tmp) 2>/dev/null ||
3485         die "Unable to create temporary file in $TMPDIR."
3486     append TMPFILES $tmp
3487     eval $1=$tmp
3488 }
3489
3490 trap 'rm -f -- $TMPFILES' EXIT
3491
3492 tmpfile TMPASM .asm
3493 tmpfile TMPC   .c
3494 tmpfile TMPCPP .cpp
3495 tmpfile TMPE   $EXESUF
3496 tmpfile TMPH   .h
3497 tmpfile TMPM   .m
3498 tmpfile TMPO   .o
3499 tmpfile TMPS   .S
3500 tmpfile TMPSH  .sh
3501 tmpfile TMPV   .ver
3502
3503 unset -f mktemp
3504
3505 chmod +x $TMPE
3506
3507 # make sure we can execute files in $TMPDIR
3508 cat > $TMPSH 2>> $logfile <<EOF
3509 #! /bin/sh
3510 EOF
3511 chmod +x $TMPSH >> $logfile 2>&1
3512 if ! $TMPSH >> $logfile 2>&1; then
3513     cat <<EOF
3514 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3515 variable to another directory and make sure that it is not mounted noexec.
3516 EOF
3517     die "Sanity test failed."
3518 fi
3519
3520 armasm_flags(){
3521     for flag; do
3522         case $flag in
3523             # Filter out MSVC cl.exe options from cflags that shouldn't
3524             # be passed to gas-preprocessor
3525             -M[TD]*)                                            ;;
3526             *)                  echo $flag                      ;;
3527         esac
3528    done
3529 }
3530
3531 ccc_flags(){
3532     for flag; do
3533         case $flag in
3534             -std=c99)           echo -c99                       ;;
3535             -mcpu=*)            echo -arch ${flag#*=}           ;;
3536             -mieee)             echo -ieee                      ;;
3537             -O*|-fast)          echo $flag                      ;;
3538             -fno-math-errno)    echo -assume nomath_errno       ;;
3539             -g)                 echo -g3                        ;;
3540             -Wall)              echo -msg_enable level2         ;;
3541             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3542             -Wl,*)              echo $flag                      ;;
3543             -f*|-W*)                                            ;;
3544             *)                  echo $flag                      ;;
3545         esac
3546    done
3547 }
3548
3549 cparser_flags(){
3550     for flag; do
3551         case $flag in
3552             -Wno-switch)             echo -Wno-switch-enum ;;
3553             -Wno-format-zero-length) ;;
3554             -Wdisabled-optimization) ;;
3555             -Wno-pointer-sign)       echo -Wno-other ;;
3556             *)                       echo $flag ;;
3557         esac
3558     done
3559 }
3560
3561 msvc_common_flags(){
3562     for flag; do
3563         case $flag in
3564             # In addition to specifying certain flags under the compiler
3565             # specific filters, they must be specified here as well or else the
3566             # generic catch all at the bottom will print the original flag.
3567             -Wall)                ;;
3568             -std=c99)             ;;
3569             # Common flags
3570             -fomit-frame-pointer) ;;
3571             -g)                   echo -Z7 ;;
3572             -fno-math-errno)      ;;
3573             -fno-common)          ;;
3574             -fno-signed-zeros)    ;;
3575             -fPIC)                ;;
3576             -mthumb)              ;;
3577             -march=*)             ;;
3578             -lz)                  echo zlib.lib ;;
3579             -lavifil32)           echo vfw32.lib ;;
3580             -lavicap32)           echo vfw32.lib user32.lib ;;
3581             -lx264)               echo libx264.lib ;;
3582             -l*)                  echo ${flag#-l}.lib ;;
3583             -LARGEADDRESSAWARE)   echo $flag ;;
3584             -L*)                  echo -libpath:${flag#-L} ;;
3585             *)                    echo $flag ;;
3586         esac
3587     done
3588 }
3589
3590 msvc_flags(){
3591     msvc_common_flags "$@"
3592     for flag; do
3593         case $flag in
3594             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3595                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3596                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3597                                        -wd4307 \
3598                                        -wd4273 -wd4554 -wd4701 ;;
3599         esac
3600     done
3601 }
3602
3603 icl_flags(){
3604     msvc_common_flags "$@"
3605     for flag; do
3606         case $flag in
3607             # Despite what Intel's documentation says -Wall, which is supported
3608             # on Windows, does enable remarks so disable them here.
3609             -Wall)                echo $flag -Qdiag-disable:remark ;;
3610             -std=c99)             echo -Qstd=c99 ;;
3611             -flto)                echo -ipo ;;
3612         esac
3613     done
3614 }
3615
3616 icc_flags(){
3617     for flag; do
3618         case $flag in
3619             -flto)                echo -ipo ;;
3620             *)                    echo $flag ;;
3621         esac
3622     done
3623 }
3624
3625 pgi_flags(){
3626     for flag; do
3627         case $flag in
3628             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3629             -fomit-frame-pointer) echo -Mnoframe ;;
3630             -g)                   echo -gopt ;;
3631             *)                    echo $flag ;;
3632         esac
3633     done
3634 }
3635
3636 suncc_flags(){
3637     for flag; do
3638         case $flag in
3639             -march=*|-mcpu=*)
3640                 case "${flag#*=}" in
3641                     native)                   echo -xtarget=native       ;;
3642                     v9|niagara)               echo -xarch=sparc          ;;
3643                     ultrasparc)               echo -xarch=sparcvis       ;;
3644                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3645                     i586|pentium)             echo -xchip=pentium        ;;
3646                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3647                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3648                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3649                     pentium4*)          echo -xtarget=pentium4           ;;
3650                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3651                     *-sse3)             echo -xarch=sse3                 ;;
3652                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3653                     bonnell)                   echo -xarch=ssse3         ;;
3654                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3655                     westmere)                  echo -xtarget=westmere    ;;
3656                     silvermont)                echo -xarch=sse4_2        ;;
3657                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3658                     core-avx*|ivybridge|haswell|broadwell)
3659                                                echo -xarch=avx           ;;
3660                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3661                     btver1)                    echo -xarch=amdsse4a      ;;
3662                     btver2|bdver*)             echo -xarch=avx           ;;
3663                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3664                     k8|opteron|athlon64|athlon-fx)
3665                                                echo -xarch=sse2a         ;;
3666                     athlon*)                   echo -xarch=pentium_proa  ;;
3667                 esac
3668                 ;;
3669             -std=c99)             echo -xc99              ;;
3670             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3671             -fPIC)                echo -KPIC -xcode=pic32 ;;
3672             -W*,*)                echo $flag              ;;
3673             -f*-*|-W*|-mimpure-text)                      ;;
3674             -shared)              echo -G                 ;;
3675             *)                    echo $flag              ;;
3676         esac
3677     done
3678 }
3679
3680 tms470_flags(){
3681     for flag; do
3682         case $flag in
3683             -march=*|-mcpu=*)
3684                 case "${flag#*=}" in
3685                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3686                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3687                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3688                     armv6*|arm11*)          echo -mv=6   ;;
3689                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3690                                             echo -mv=5e  ;;
3691                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3692                 esac
3693                 ;;
3694             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3695             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3696             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3697             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3698             -msoft-float)   echo --float_support=vfplib       ;;
3699             -O[0-3]|-mf=*)  echo $flag                        ;;
3700             -g)             echo -g -mn                       ;;
3701             -pds=*)         echo $flag                        ;;
3702             -D*|-I*)        echo $flag                        ;;
3703             --gcc|--abi=*)  echo $flag                        ;;
3704             -me)            echo $flag                        ;;
3705         esac
3706     done
3707 }
3708
3709 probe_cc(){
3710     pfx=$1
3711     _cc=$2
3712     first=$3
3713
3714     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3715     unset _ld_o _ldflags _ld_lib _ld_path
3716     unset _depflags _DEPCMD _DEPFLAGS
3717     _flags_filter=echo
3718
3719     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3720         true # no-op to avoid reading stdin in following checks
3721     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3722         _type=llvm_gcc
3723         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3724         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3725         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3726         _cflags_speed='-O3'
3727         _cflags_size='-Os'
3728     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3729         _type=gcc
3730         gcc_version=$($_cc --version | head -n1)
3731         gcc_basever=$($_cc -dumpversion)
3732         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3733         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3734         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3735         case $gcc_basever in
3736             2) ;;
3737             2.*) ;;
3738             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3739         esac
3740         if [ "$first" = true ]; then
3741             case $gcc_basever in
3742                 4.2*)
3743                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3744             esac
3745         fi
3746         _cflags_speed='-O3'
3747         _cflags_size='-Os'
3748     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3749         _type=icc
3750         _ident=$($_cc --version | head -n1)
3751         _depflags='-MMD'
3752         _cflags_speed='-O3'
3753         _cflags_size='-Os'
3754         _cflags_noopt='-O1'
3755         _flags_filter=icc_flags
3756     elif $_cc -v 2>&1 | grep -q xlc; then
3757         _type=xlc
3758         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3759         _cflags_speed='-O5'
3760         _cflags_size='-O5 -qcompact'
3761     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3762         _type=ccc
3763         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3764         _DEPFLAGS='-M'
3765         _cflags_speed='-fast'
3766         _cflags_size='-O1'
3767         _flags_filter=ccc_flags
3768     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3769         test -d "$sysroot" || die "No valid sysroot specified."
3770         _type=armcc
3771         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3772         armcc_conf="$PWD/armcc.conf"
3773         $_cc --arm_linux_configure                 \
3774              --arm_linux_config_file="$armcc_conf" \
3775              --configure_sysroot="$sysroot"        \
3776              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3777              die "Error creating armcc configuration file."
3778         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3779         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3780         as_default="${cross_prefix}gcc"
3781         _depflags='-MMD'
3782         _cflags_speed='-O3'
3783         _cflags_size='-Os'
3784     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3785         _type=tms470
3786         _ident=$($_cc -version | head -n1 | tr -s ' ')
3787         _flags='--gcc --abi=eabi -me'
3788         _cc_e='-ppl -fe=$@'
3789         _cc_o='-fe=$@'
3790         _depflags='-ppa -ppd=$(@:.o=.d)'
3791         _cflags_speed='-O3 -mf=5'
3792         _cflags_size='-O3 -mf=2'
3793         _flags_filter=tms470_flags
3794     elif $_cc -v 2>&1 | grep -q clang; then
3795         _type=clang
3796         _ident=$($_cc --version 2>/dev/null | head -n1)
3797         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3798         _cflags_speed='-O3'
3799         _cflags_size='-Os'
3800     elif $_cc -V 2>&1 | grep -q Sun; then
3801         _type=suncc
3802         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3803         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3804         _DEPFLAGS='-xM1 -xc99'
3805         _ldflags='-std=c99'
3806         _cflags_speed='-O5'
3807         _cflags_size='-O5 -xspace'
3808         _flags_filter=suncc_flags
3809     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3810         _type=pathscale
3811         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3812         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3813         _cflags_speed='-O2'
3814         _cflags_size='-Os'
3815         _flags_filter='filter_out -Wdisabled-optimization'
3816     elif $_cc -v 2>&1 | grep -q Open64; then
3817         _type=open64
3818         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3819         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3820         _cflags_speed='-O2'
3821         _cflags_size='-Os'
3822         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3823     elif $_cc -V 2>&1 | grep -q Portland; then
3824         _type=pgi
3825         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3826         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3827         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3828         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3829         _cflags_noopt="-O"
3830         _flags_filter=pgi_flags
3831     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3832         _type=armasm
3833         _ident=$($_cc | head -n1)
3834         # 4509: "This form of conditional instruction is deprecated"
3835         _flags="-nologo -ignore 4509"
3836         _flags_filter=armasm_flags
3837     elif $_cc 2>&1 | grep -q Intel; then
3838         _type=icl
3839         _ident=$($_cc 2>&1 | head -n1)
3840         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3841         # Not only is O3 broken on 13.x+ but it is slower on all previous
3842         # versions (tested) as well.
3843         _cflags_speed="-O2"
3844         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3845         if $_cc 2>&1 | grep -q Linker; then
3846             _ld_o='-out:$@'
3847         else
3848             _ld_o='-Fe$@'
3849         fi
3850         _cc_o='-Fo$@'
3851         _cc_e='-P'
3852         _flags_filter=icl_flags
3853         _ld_lib='lib%.a'
3854         _ld_path='-libpath:'
3855         # -Qdiag-error to make icl error when seeing certain unknown arguments
3856         _flags='-nologo -Qdiag-error:4044,10157'
3857         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3858         # with MSVC which enables it by default.
3859         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3860         disable stripping
3861     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3862         _type=msvc
3863         _ident=$($_cc 2>&1 | head -n1)
3864         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3865         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3866         _cflags_speed="-O2"
3867         _cflags_size="-O1"
3868         if $_cc -nologo- 2>&1 | grep -q Linker; then
3869             _ld_o='-out:$@'
3870         else
3871             _ld_o='-Fe$@'
3872         fi
3873         _cc_o='-Fo$@'
3874         _cc_e='-P -Fi$@'
3875         _flags_filter=msvc_flags
3876         _ld_lib='lib%.a'
3877         _ld_path='-libpath:'
3878         _flags='-nologo'
3879         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
3880         disable stripping
3881     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3882         _type=cparser
3883         _ident=$($_cc --version | head -n1)
3884         _depflags='-MMD'
3885         _cflags_speed='-O4'
3886         _cflags_size='-O2'
3887         _flags_filter=cparser_flags
3888     fi
3889
3890     eval ${pfx}_type=\$_type
3891     eval ${pfx}_ident=\$_ident
3892 }
3893
3894 set_ccvars(){
3895     eval ${1}_C=\${_cc_c-\${${1}_C}}
3896     eval ${1}_E=\${_cc_e-\${${1}_E}}
3897     eval ${1}_O=\${_cc_o-\${${1}_O}}
3898
3899     if [ -n "$_depflags" ]; then
3900         eval ${1}_DEPFLAGS=\$_depflags
3901     else
3902         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3903         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3904         eval DEP${1}FLAGS=\$_flags
3905     fi
3906 }
3907
3908 probe_cc cc "$cc" "true"
3909 cflags_filter=$_flags_filter
3910 cflags_speed=$_cflags_speed
3911 cflags_size=$_cflags_size
3912 cflags_noopt=$_cflags_noopt
3913 add_cflags $_flags $_cflags
3914 cc_ldflags=$_ldflags
3915 set_ccvars CC
3916
3917 probe_cc hostcc "$host_cc"
3918 host_cflags_filter=$_flags_filter
3919 add_host_cflags  $_flags $_cflags
3920 set_ccvars HOSTCC
3921
3922 test -n "$cc_type" && enable $cc_type ||
3923     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3924
3925 : ${as_default:=$cc}
3926 : ${objcc_default:=$cc}
3927 : ${dep_cc_default:=$cc}
3928 : ${ld_default:=$cc}
3929 : ${host_ld_default:=$host_cc}
3930 set_default ar as objcc dep_cc ld host_ld windres
3931
3932 probe_cc as "$as"
3933 asflags_filter=$_flags_filter
3934 add_asflags $_flags $_cflags
3935 set_ccvars AS
3936
3937 probe_cc objcc "$objcc"
3938 objcflags_filter=$_flags_filter
3939 add_objcflags $_flags $_cflags
3940 set_ccvars OBJC
3941
3942 probe_cc ld "$ld"
3943 ldflags_filter=$_flags_filter
3944 add_ldflags $_flags $_ldflags
3945 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3946 LD_O=${_ld_o-$LD_O}
3947 LD_LIB=${_ld_lib-$LD_LIB}
3948 LD_PATH=${_ld_path-$LD_PATH}
3949
3950 probe_cc hostld "$host_ld"
3951 host_ldflags_filter=$_flags_filter
3952 add_host_ldflags $_flags $_ldflags
3953 HOSTLD_O=${_ld_o-$HOSTLD_O}
3954
3955 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3956     probe_cc depcc "$dep_cc"
3957     CCDEP=${_DEPCMD:-$DEPCMD}
3958     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3959     DEPCCFLAGS=$_flags
3960 fi
3961
3962 if $ar 2>&1 | grep -q Microsoft; then
3963     arflags="-nologo"
3964     ar_o='-out:$@'
3965 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3966     arflags="rq"
3967     ar_o='$@'
3968 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3969     arflags='-Xany -r -c'
3970     ar_o='$@'
3971 elif $ar 2>&1 | grep -q "\[D\] "; then
3972     arflags="rcD"
3973     ar_o='$@'
3974 else
3975     arflags="rc"
3976     ar_o='$@'
3977 fi
3978
3979 add_cflags $extra_cflags
3980 add_cxxflags $extra_cxxflags
3981 add_objcflags $extra_objcflags
3982 add_asflags $extra_cflags
3983
3984 if test -n "$sysroot"; then
3985     case "$cc_type" in
3986         gcc|llvm_gcc|clang)
3987             add_cppflags --sysroot="$sysroot"
3988             add_ldflags --sysroot="$sysroot"
3989 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3990             add_cppflags -isysroot "$sysroot"
3991             add_ldflags -isysroot "$sysroot"
3992         ;;
3993         tms470)
3994             add_cppflags -I"$sysinclude"
3995             add_ldflags  --sysroot="$sysroot"
3996         ;;
3997     esac
3998 fi
3999
4000 if test "$cpu" = host; then
4001     enabled cross_compile &&
4002         die "--cpu=host makes no sense when cross-compiling."
4003
4004     case "$cc_type" in
4005         gcc|llvm_gcc)
4006             check_native(){
4007                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4008                 sed -n "/cc1.*$1=/{
4009                             s/.*$1=\\([^ ]*\\).*/\\1/
4010                             p
4011                             q
4012                         }" $TMPE
4013             }
4014             cpu=$(check_native -march || check_native -mcpu)
4015         ;;
4016         clang)
4017             check_native(){
4018                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4019                 sed -n "/cc1.*-target-cpu /{
4020                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4021                             p
4022                             q
4023                         }" $TMPE
4024             }
4025             cpu=$(check_native -march)
4026         ;;
4027     esac
4028
4029     test "${cpu:-host}" = host &&
4030         die "--cpu=host not supported with compiler $cc"
4031 fi
4032
4033 # Deal with common $arch aliases
4034 case "$arch" in
4035     aarch64|arm64)
4036         arch="aarch64"
4037     ;;
4038     arm*|iPad*|iPhone*)
4039         arch="arm"
4040     ;;
4041     mips*|IP*)
4042         case "$arch" in
4043         *el)
4044             add_cppflags -EL
4045             add_ldflags -EL
4046         ;;
4047         *eb)
4048             add_cppflags -EB
4049             add_ldflags -EB
4050         ;;
4051         esac
4052         arch="mips"
4053     ;;
4054     parisc*|hppa*)
4055         arch="parisc"
4056     ;;
4057     "Power Macintosh"|ppc*|powerpc*)
4058         arch="ppc"
4059     ;;
4060     s390|s390x)
4061         arch="s390"
4062     ;;
4063     sh4|sh)
4064         arch="sh4"
4065     ;;
4066     sun4u|sparc*)
4067         arch="sparc"
4068     ;;
4069     tilegx|tile-gx)
4070         arch="tilegx"
4071     ;;
4072     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4073         arch="x86"
4074     ;;
4075 esac
4076
4077 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4078 enable $arch
4079
4080 # Add processor-specific flags
4081 if enabled aarch64; then
4082
4083     case $cpu in
4084         armv*)
4085             cpuflags="-march=$cpu"
4086         ;;
4087         *)
4088             cpuflags="-mcpu=$cpu"
4089         ;;
4090     esac
4091
4092 elif enabled alpha; then
4093
4094     cpuflags="-mcpu=$cpu"
4095
4096 elif enabled arm; then
4097
4098     check_arm_arch() {
4099         check_cpp_condition stddef.h \
4100             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4101             $cpuflags
4102     }
4103
4104     probe_arm_arch() {
4105         if   check_arm_arch 4;        then echo armv4;
4106         elif check_arm_arch 4T;       then echo armv4t;
4107         elif check_arm_arch 5;        then echo armv5;
4108         elif check_arm_arch 5E;       then echo armv5e;
4109         elif check_arm_arch 5T;       then echo armv5t;
4110         elif check_arm_arch 5TE;      then echo armv5te;
4111         elif check_arm_arch 5TEJ;     then echo armv5te;
4112         elif check_arm_arch 6;        then echo armv6;
4113         elif check_arm_arch 6J;       then echo armv6j;
4114         elif check_arm_arch 6K;       then echo armv6k;
4115         elif check_arm_arch 6Z;       then echo armv6z;
4116         elif check_arm_arch 6ZK;      then echo armv6zk;
4117         elif check_arm_arch 6T2;      then echo armv6t2;
4118         elif check_arm_arch 7;        then echo armv7;
4119         elif check_arm_arch 7A  7_A;  then echo armv7-a;
4120         elif check_arm_arch 7S;       then echo armv7-a;
4121         elif check_arm_arch 7R  7_R;  then echo armv7-r;
4122         elif check_arm_arch 7M  7_M;  then echo armv7-m;
4123         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
4124         elif check_arm_arch 8A  8_A;  then echo armv8-a;
4125         fi
4126     }
4127
4128     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4129
4130     case $cpu in
4131         armv*)
4132             cpuflags="-march=$cpu"
4133             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4134         ;;
4135         *)
4136             cpuflags="-mcpu=$cpu"
4137             case $cpu in
4138                 cortex-a*)                               subarch=armv7a  ;;
4139                 cortex-r*)                               subarch=armv7r  ;;
4140                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4141                 arm11*)                                  subarch=armv6   ;;
4142                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4143                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4144                 *)                             subarch=$(probe_arm_arch) ;;
4145             esac
4146         ;;
4147     esac
4148
4149     case "$subarch" in
4150         armv5t*)    enable fast_clz                ;;
4151         armv[6-8]*)
4152             enable fast_clz
4153             disabled fast_unaligned || enable fast_unaligned
4154             ;;
4155     esac
4156
4157 elif enabled avr32; then
4158
4159     case $cpu in
4160         ap7[02]0[0-2])
4161             subarch="avr32_ap"
4162             cpuflags="-mpart=$cpu"
4163         ;;
4164         ap)
4165             subarch="avr32_ap"
4166             cpuflags="-march=$cpu"
4167         ;;
4168         uc3[ab]*)
4169             subarch="avr32_uc"
4170             cpuflags="-mcpu=$cpu"
4171         ;;
4172         uc)
4173             subarch="avr32_uc"
4174             cpuflags="-march=$cpu"
4175         ;;
4176     esac
4177
4178 elif enabled bfin; then
4179
4180     cpuflags="-mcpu=$cpu"
4181
4182 elif enabled mips; then
4183
4184     cpuflags="-march=$cpu"
4185
4186     case $cpu in
4187         24kc)
4188             disable mips32r6
4189             disable mips64r2
4190             disable mips64r6
4191             disable mipsfpu
4192             disable mipsdsp
4193             disable mipsdspr2
4194             disable msa
4195         ;;
4196         24kf*)
4197             disable mips32r6
4198             disable mips64r2
4199             disable mips64r6
4200             disable mipsdsp
4201             disable mipsdspr2
4202             disable msa
4203         ;;
4204         24kec|34kc|1004kc)
4205             disable mips32r6
4206             disable mips64r2
4207             disable mips64r6
4208             disable mipsfpu
4209             disable mipsdspr2
4210             disable msa
4211         ;;
4212         24kef*|34kf*|1004kf*)
4213             disable mips32r6
4214             disable mips64r2
4215             disable mips64r6
4216             disable mipsdspr2
4217             disable msa
4218         ;;
4219         74kc)
4220             disable mips32r6
4221             disable mips64r2
4222             disable mips64r6
4223             disable mipsfpu
4224             disable msa
4225         ;;
4226         74kf)
4227             disable mips32r6
4228             disable mips64r2
4229             disable mips64r6
4230             disable msa
4231         ;;
4232         p5600)
4233             disable mips32r6
4234             disable mips64r2
4235             disable mips64r6
4236             disable mipsdsp
4237             disable mipsdspr2
4238             check_cflags "-mtune=p5600" &&
4239             check_cflags "-mfp64 -msched-weight -mload-store-pairs -funroll-loops" &&
4240             add_asflags "-mfp64"
4241         ;;
4242         i6400)
4243             disable mips32r2
4244             disable mips32r6
4245             disable mips64r2
4246             disable mipsdsp
4247             disable mipsdspr2
4248             check_cflags "-mtune=i6400 -mabi=64" &&
4249             check_cflags "-mfp64 -msched-weight -mload-store-pairs -funroll-loops" &&
4250             check_ldflags "-mabi=64" &&
4251             add_asflags "-mfp64"
4252         ;;
4253         loongson*)
4254             disable mips32r2
4255             disable mips32r6
4256             disable mips64r2
4257             disable mips64r6
4258             disable mipsfpu
4259             disable mipsdsp
4260             disable mipsdspr2
4261             disable msa
4262             enable local_aligned_8 local_aligned_16 local_aligned_32
4263             enable simd_align_16
4264             enable fast_64bit
4265             enable fast_clz
4266             enable fast_cmov
4267             enable fast_unaligned
4268             disable aligned_stack
4269             case $cpu in
4270                 loongson3*)
4271                     cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4272                 ;;
4273                 loongson2e)
4274                     cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4275                 ;;
4276                 loongson2f)
4277                     cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4278                 ;;
4279             esac
4280         ;;
4281         generic)
4282             # We do not disable anything. Is up to the user to disable
4283             # the unwanted features.
4284         ;;
4285         *)
4286             # Unknown CPU. Disable everything.
4287             warn "unknown CPU. Disabling all MIPS optimizations."
4288             disable mipsfpu
4289             disable mips32r2
4290             disable mips32r6
4291             disable mips64r2
4292             disable mips64r6
4293             disable mipsdsp
4294             disable mipsdspr2
4295             disable msa
4296         ;;
4297     esac
4298
4299 elif enabled ppc; then
4300
4301     disable ldbrx
4302
4303     case $(tolower $cpu) in
4304         601|ppc601|powerpc601)
4305             cpuflags="-mcpu=601"
4306             disable altivec
4307         ;;
4308         603*|ppc603*|powerpc603*)
4309             cpuflags="-mcpu=603"
4310             disable altivec
4311         ;;
4312         604*|ppc604*|powerpc604*)
4313             cpuflags="-mcpu=604"
4314             disable altivec
4315         ;;
4316         g3|75*|ppc75*|powerpc75*)
4317             cpuflags="-mcpu=750"
4318             disable altivec
4319         ;;
4320         g4|745*|ppc745*|powerpc745*)
4321             cpuflags="-mcpu=7450"
4322             disable vsx
4323         ;;
4324         74*|ppc74*|powerpc74*)
4325             cpuflags="-mcpu=7400"
4326             disable vsx
4327         ;;
4328         g5|970|ppc970|powerpc970)
4329             cpuflags="-mcpu=970"
4330             disable vsx
4331         ;;
4332         power[3-6]*)
4333             cpuflags="-mcpu=$cpu"
4334             disable vsx
4335         ;;
4336         power[7-8]*)
4337             cpuflags="-mcpu=$cpu"
4338         ;;
4339         cell)
4340             cpuflags="-mcpu=cell"
4341             enable ldbrx
4342             disable vsx
4343         ;;
4344         e500mc)
4345             cpuflags="-mcpu=e500mc"
4346             disable altivec
4347         ;;
4348         e500v2)
4349             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4350             disable altivec
4351             disable dcbzl
4352         ;;
4353         e500)
4354             cpuflags="-mcpu=8540 -mhard-float"
4355             disable altivec
4356             disable dcbzl
4357         ;;
4358     esac
4359
4360 elif enabled sparc; then
4361
4362     case $cpu in
4363         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4364             cpuflags="-mcpu=$cpu"
4365         ;;
4366         ultrasparc*|niagara[234])
4367             cpuflags="-mcpu=$cpu"
4368         ;;
4369     esac
4370
4371 elif enabled x86; then
4372
4373     case $cpu in
4374         i[345]86|pentium)
4375             cpuflags="-march=$cpu"
4376             disable i686
4377             disable mmx
4378         ;;
4379         # targets that do NOT support nopl and conditional mov (cmov)
4380         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4381             cpuflags="-march=$cpu"
4382             disable i686
4383         ;;
4384         # targets that do support nopl and conditional mov (cmov)
4385         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4386         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
4387             cpuflags="-march=$cpu"
4388             enable i686
4389             enable fast_cmov
4390         ;;
4391         # targets that do support conditional mov but on which it's slow
4392         pentium4|pentium4m|prescott|nocona)
4393             cpuflags="-march=$cpu"
4394             enable i686
4395             disable fast_cmov
4396         ;;
4397     esac
4398
4399 fi
4400
4401 if [ "$cpu" != generic ]; then
4402     add_cflags  $cpuflags
4403     add_asflags $cpuflags
4404     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4405 fi
4406
4407 # compiler sanity check
4408 check_exec <<EOF
4409 int main(void){ return 0; }
4410 EOF
4411 if test "$?" != 0; then
4412     echo "$cc is unable to create an executable file."
4413     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4414         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4415         echo "Only do this if you know what cross compiling means."
4416     fi
4417     die "C compiler test failed."
4418 fi
4419
4420 add_cppflags -D_ISOC99_SOURCE
4421 add_cxxflags -D__STDC_CONSTANT_MACROS
4422 check_cflags -std=c99
4423 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4424 #include <stdlib.h>
4425 EOF
4426 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4427 #include <stdlib.h>
4428 EOF
4429
4430 add_host_cppflags -D_ISOC99_SOURCE
4431 check_host_cflags -std=c99
4432 check_host_cflags -Wall
4433 check_host_cflags -O3
4434
4435 check_64bit(){
4436     arch32=$1
4437     arch64=$2
4438     expr=$3
4439     check_code cc "" "int test[2*($expr) - 1]" &&
4440         subarch=$arch64 || subarch=$arch32
4441 }
4442
4443 case "$arch" in
4444     aarch64|alpha|ia64)
4445         spic=$shared
4446     ;;
4447     mips)
4448         check_64bit mips mips64 '_MIPS_SIM > 1'
4449         spic=$shared
4450     ;;
4451     parisc)
4452         check_64bit parisc parisc64 'sizeof(void *) > 4'
4453         spic=$shared
4454     ;;
4455     ppc)
4456         check_64bit ppc ppc64 'sizeof(void *) > 4'
4457         spic=$shared
4458     ;;
4459     s390)
4460         check_64bit s390 s390x 'sizeof(void *) > 4'
4461         spic=$shared
4462     ;;
4463     sparc)
4464         check_64bit sparc sparc64 'sizeof(void *) > 4'
4465         spic=$shared
4466     ;;
4467     x86)
4468         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4469         # Treat x32 as x64 for now. Note it also needs spic=$shared
4470         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4471             subarch=x86_64
4472         if test "$subarch" = "x86_64"; then
4473             spic=$shared
4474         fi
4475     ;;
4476     ppc)
4477         check_cc <<EOF && subarch="ppc64"
4478         int test[(int)sizeof(char*) - 7];
4479 EOF
4480     ;;
4481 esac
4482
4483 enable $subarch
4484 enabled spic && enable_weak pic
4485
4486 # OS specific
4487 case $target_os in
4488     aix)
4489         SHFLAGS=-shared
4490         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4491         enabled shared && add_ldflags -Wl,-brtl
4492         ;;
4493     android)
4494         disable symver
4495         enable section_data_rel_ro
4496         SLIB_INSTALL_NAME='$(SLIBNAME)'
4497         SLIB_INSTALL_LINKS=
4498         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4499         ;;
4500     haiku)
4501         prefix_default="/boot/common"
4502         network_extralibs="-lnetwork"
4503         host_libs=
4504         ;;
4505     sunos)
4506         SHFLAGS='-shared -Wl,-h,$$(@F)'
4507         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4508         network_extralibs="-lsocket -lnsl"
4509         add_cppflags -D__EXTENSIONS__
4510         # When using suncc to build, the Solaris linker will mark
4511         # an executable with each instruction set encountered by
4512         # the Solaris assembler.  As our libraries contain their own
4513         # guards for processor-specific code, instead suppress
4514         # generation of the HWCAPS ELF section on Solaris x86 only.
4515         enabled_all suncc x86 &&
4516             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4517             add_ldflags -Wl,-M,mapfile
4518         nm_default='nm -P -g'
4519         SLIB_CREATE_DEF_CMD='$(Q)perl $(SRC_PATH)/compat/solaris/make_sunver.pl $$(filter %.ver,$$^) $(OBJS) | grep -v @ > $(SUBDIR)lib$(NAME).ver-sol2'
4520         ;;
4521     netbsd)
4522         disable symver
4523         oss_indev_extralibs="-lossaudio"
4524         oss_outdev_extralibs="-lossaudio"
4525         enabled gcc || check_ldflags -Wl,-zmuldefs
4526         ;;
4527     openbsd|bitrig)
4528         disable symver
4529         SHFLAGS='-shared'
4530         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4531         SLIB_INSTALL_LINKS=
4532         oss_indev_extralibs="-lossaudio"
4533         oss_outdev_extralibs="-lossaudio"
4534         ;;
4535     dragonfly)
4536         disable symver
4537         ;;
4538     freebsd)
4539         ;;
4540     bsd/os)
4541         add_extralibs -lpoll -lgnugetopt
4542         strip="strip -d"
4543         ;;
4544     darwin)
4545         enabled ppc && add_asflags -force_cpusubtype_ALL
4546         install_name_dir_default='$(SHLIBDIR)'
4547         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4548         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4549         strip="${strip} -x"
4550         add_ldflags -Wl,-dynamic,-search_paths_first
4551         SLIBSUF=".dylib"
4552         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4553         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4554         objformat="macho"
4555         enabled x86_64 && objformat="macho64"
4556         enabled_any pic shared x86_64 ||
4557             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4558         check_header dispatch/dispatch.h
4559         ;;
4560     msys*)
4561         die "Native MSYS builds are discouraged, please use the MINGW environment.";
4562         ;;
4563     mingw32*|mingw64*)
4564         if test $target_os = "mingw32ce"; then
4565             disable network
4566         else
4567             target_os=mingw32
4568         fi
4569         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4570         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4571         LIBTARGET=i386
4572         if enabled x86_64; then
4573             LIBTARGET="i386:x86-64"
4574         elif enabled arm; then
4575             LIBTARGET=arm-wince
4576         fi
4577         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4578         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4579         shlibdir_default="$bindir_default"
4580         SLIBPREF=""
4581         SLIBSUF=".dll"
4582         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4583         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4584         dlltool="${cross_prefix}dlltool"
4585         if check_cmd lib.exe -list; then
4586             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4587             if enabled x86_64; then
4588                 LIBTARGET=x64
4589             fi
4590         elif check_cmd $dlltool --version; then
4591             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4592         fi
4593         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4594         SLIB_INSTALL_LINKS=
4595         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4596         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4597         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4598         objformat="win32"
4599         ranlib=:
4600         enable dos_paths
4601         check_ldflags -Wl,--nxcompat,--dynamicbase
4602         # Lets work around some stupidity in binutils.
4603         # ld will strip relocations from executables even though we need them
4604         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4605         # however ld then forgets what the entry point should be (oops) so we
4606         # have to manually (re)set it.
4607         if enabled x86_32; then
4608             add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4609         elif enabled x86_64; then
4610             add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4611             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4612             # Set image base >4GB for extra entropy with HEASLR
4613             add_ldexeflags -Wl,--image-base,0x140000000
4614             append SHFLAGS -Wl,--image-base,0x180000000
4615         fi
4616         ;;
4617     win32|win64)
4618         disable symver
4619         if enabled shared; then
4620             # Link to the import library instead of the normal static library
4621             # for shared libs.
4622             LD_LIB='%.lib'
4623             # Cannot build both shared and static libs with MSVC or icl.
4624             disable static
4625         fi
4626         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4627         shlibdir_default="$bindir_default"
4628         SLIBPREF=""
4629         SLIBSUF=".dll"
4630         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4631         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4632         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4633         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4634         SLIB_INSTALL_LINKS=
4635         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4636         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4637         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4638         objformat="win32"
4639         ranlib=:
4640         enable dos_paths
4641         ;;
4642     cygwin*)
4643         target_os=cygwin
4644         shlibdir_default="$bindir_default"
4645         SLIBPREF="cyg"
4646         SLIBSUF=".dll"
4647         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4648         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4649         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4650         SLIB_INSTALL_LINKS=
4651         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4652         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4653         objformat="win32"
4654         enable dos_paths
4655         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4656         ;;
4657     *-dos|freedos|opendos)
4658         network_extralibs="-lsocket"
4659         objformat="coff"
4660         enable dos_paths
4661         add_cppflags -U__STRICT_ANSI__
4662         ;;
4663     linux)
4664         enable dv1394
4665         enable section_data_rel_ro
4666         ;;
4667     irix*)
4668         target_os=irix
4669         ranlib="echo ignoring ranlib"
4670         ;;
4671     os/2*)
4672         strip="lxlite -CS"
4673         ln_s="cp -f"
4674         objformat="aout"
4675         add_cppflags -D_GNU_SOURCE
4676         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4677         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4678         LIBSUF="_s.a"
4679         SLIBPREF=""
4680         SLIBSUF=".dll"
4681         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4682         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4683         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4684             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4685             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4686             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4687             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4688         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4689             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4690         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4691         enable dos_paths
4692         enable_weak os2threads
4693         ;;
4694     gnu/kfreebsd)
4695         add_cppflags -D_BSD_SOURCE
4696         ;;
4697     gnu)
4698         ;;
4699     qnx)
4700         add_cppflags -D_QNX_SOURCE
4701         network_extralibs="-lsocket"
4702         ;;
4703     symbian)
4704         SLIBSUF=".dll"
4705         enable dos_paths
4706         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4707         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4708         add_ldflags -Wl,--target1-abs,--no-undefined \
4709                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4710                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4711         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4712                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4713                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4714         ;;
4715     osf1)
4716         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4717         ;;
4718     minix)
4719         ;;
4720     plan9)
4721         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4722                      -D_REENTRANT_SOURCE        \
4723                      -D_RESEARCH_SOURCE         \
4724                      -DFD_SETSIZE=96            \
4725                      -DHAVE_SOCK_OPTS
4726         add_compat strtod.o strtod=avpriv_strtod
4727         network_extralibs='-lbsd'
4728         exeobjs=compat/plan9/main.o
4729         disable ffserver
4730         cp_f='cp'
4731         ;;
4732     none)
4733         ;;
4734     *)
4735         die "Unknown OS '$target_os'."
4736         ;;
4737 esac
4738
4739 # test if creating links works
4740 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
4741 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
4742 mkdir "$link_dest"
4743 $ln_s "$link_dest" "$link_name"
4744 touch "$link_dest/test_file"
4745 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
4746     # create link to source path
4747     [ -e src ] && rm src
4748     $ln_s "$source_path" src
4749     source_link=src
4750 else
4751     # creating directory links doesn't work
4752     # fall back to using the full source path
4753     source_link="$source_path"
4754 fi
4755 # cleanup
4756 rm -r "$link_dest"
4757 rm -r "$link_name"
4758
4759 # determine libc flavour
4760
4761 probe_libc(){
4762     pfx=$1
4763     pfx_no_=${pfx%_}
4764     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4765     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4766         eval ${pfx}libc_type=uclibc
4767         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4768     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4769         eval ${pfx}libc_type=glibc
4770         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4771     # MinGW headers can be installed on Cygwin, so check for newlib first.
4772     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4773         eval ${pfx}libc_type=newlib
4774         add_${pfx}cppflags -U__STRICT_ANSI__
4775     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4776     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4777         eval ${pfx}libc_type=mingw64
4778         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4779             add_compat msvcrt/snprintf.o
4780             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4781         fi
4782         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4783         eval test \$${pfx_no_}cc_type = "gcc" &&
4784             add_${pfx}cppflags -D__printf__=__gnu_printf__
4785     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4786          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4787         eval ${pfx}libc_type=mingw32
4788         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4789             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4790             die "ERROR: MinGW32 runtime version must be >= 3.15."
4791         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4792         eval test \$${pfx_no_}cc_type = "gcc" &&
4793             add_${pfx}cppflags -D__printf__=__gnu_printf__
4794     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4795         eval ${pfx}libc_type=msvcrt
4796         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4797             if [ "$pfx" = host_ ]; then
4798                 add_host_cppflags -Dsnprintf=_snprintf
4799             else
4800                 add_compat strtod.o strtod=avpriv_strtod
4801                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4802                                              _snprintf=avpriv_snprintf  \
4803                                              vsnprintf=avpriv_vsnprintf
4804             fi
4805         fi
4806         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4807         # 0x601 by default unless something else is set by the user.
4808         # This can easily lead to us detecting functions only present
4809         # in such new versions and producing binaries requiring windows 7.0.
4810         # Therefore explicitly set the default to XP unless the user has
4811         # set something else on the command line.
4812         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4813         # family. For these cases, configure is free to use any functions
4814         # found in the SDK headers by default. (Alternatively, we could force
4815         # _WIN32_WINNT to 0x0602 in that case.)
4816         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4817             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4818 #ifdef WINAPI_FAMILY
4819 #include <winapifamily.h>
4820 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4821 #error not desktop
4822 #endif
4823 #endif
4824 EOF
4825     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4826         eval ${pfx}libc_type=klibc
4827     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4828         eval ${pfx}libc_type=bionic
4829     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4830         eval ${pfx}libc_type=solaris
4831         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4832     fi
4833     check_${pfx}cc <<EOF
4834 #include <time.h>
4835 void *v = localtime_r;
4836 EOF
4837 test "$?" != 0 && check_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4838 #include <time.h>
4839 void *v = localtime_r;
4840 EOF
4841
4842 }
4843
4844 probe_libc
4845 test -n "$libc_type" && enable libc_$libc_type
4846 probe_libc host_
4847 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4848
4849 case $libc_type in
4850     bionic)
4851         add_compat strtod.o strtod=avpriv_strtod
4852         ;;
4853 esac
4854
4855 # hacks for compiler/libc/os combinations
4856
4857 if enabled_all tms470 libc_glibc; then
4858     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4859     add_cppflags -D__USER_LABEL_PREFIX__=
4860     add_cppflags -D__builtin_memset=memset
4861     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4862     add_cflags   -pds=48    # incompatible redefinition of macro
4863 fi
4864
4865 if enabled_all ccc libc_glibc; then
4866     add_ldflags -Wl,-z,now  # calls to libots crash without this
4867 fi
4868
4869 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4870     add_cppflags '-I\$(SRC_PATH)/compat/float'
4871
4872 esc(){
4873     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4874 }
4875
4876 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4877
4878 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4879
4880 set_default libdir
4881 : ${shlibdir_default:="$libdir"}
4882 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
4883
4884 set_default $PATHS_LIST
4885 set_default nm
4886
4887 # we need to build at least one lib type
4888 if ! enabled_any static shared; then
4889     cat <<EOF
4890 At least one library type must be built.
4891 Specify --enable-static to build the static libraries or --enable-shared to
4892 build the shared libraries as well. To only build the shared libraries specify
4893 --disable-static in addition to --enable-shared.
4894 EOF
4895     exit 1;
4896 fi
4897
4898 die_license_disabled() {
4899     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4900 }
4901
4902 die_license_disabled_gpl() {
4903     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4904 }
4905
4906 die_license_disabled gpl frei0r
4907 die_license_disabled gpl libcdio
4908 die_license_disabled gpl librubberband
4909 die_license_disabled gpl libsmbclient
4910 die_license_disabled gpl libutvideo
4911 die_license_disabled gpl libvidstab
4912 die_license_disabled gpl libx264
4913 die_license_disabled gpl libx265
4914 die_license_disabled gpl libxavs
4915 die_license_disabled gpl libxvid
4916 die_license_disabled gpl x11grab
4917
4918 die_license_disabled nonfree cuda
4919 die_license_disabled nonfree libfaac
4920 die_license_disabled nonfree nvenc
4921 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4922 enabled gpl && die_license_disabled_gpl nonfree openssl
4923
4924 die_license_disabled version3 gmp
4925 die_license_disabled version3 libopencore_amrnb
4926 die_license_disabled version3 libopencore_amrwb
4927 die_license_disabled version3 libsmbclient
4928 die_license_disabled version3 libvo_amrwbenc
4929
4930 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4931
4932 disabled optimizations || check_cflags -fomit-frame-pointer
4933
4934 enable_weak_pic() {
4935     disabled pic && return
4936     enable pic
4937     add_cppflags -DPIC
4938     case "$target_os" in
4939     mingw*|cygwin*)
4940         ;;
4941     *)
4942         add_cflags -fPIC
4943         ;;
4944     esac
4945     add_asflags  -fPIC
4946 }
4947
4948 enabled pic && enable_weak_pic
4949
4950 check_cc <<EOF || die "Symbol mangling check failed."
4951 int ff_extern;
4952 EOF
4953 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4954 extern_prefix=${sym%%ff_extern*}
4955
4956 check_cc <<EOF && enable_weak inline_asm
4957 void foo(void) { __asm__ volatile ("" ::); }
4958 EOF
4959
4960 _restrict=
4961 for restrict_keyword in restrict __restrict__ __restrict; do
4962     check_cc <<EOF && _restrict=$restrict_keyword && break
4963 void foo(char * $restrict_keyword p);
4964 EOF
4965 done
4966
4967 check_cc <<EOF && enable pragma_deprecated
4968 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4969 EOF
4970
4971 check_cc <<EOF && enable attribute_packed
4972 struct { int x; } __attribute__((packed)) x;
4973 EOF
4974
4975 check_cc <<EOF && enable attribute_may_alias
4976 union { int x; } __attribute__((may_alias)) x;
4977 EOF
4978
4979 check_cc <<EOF || die "endian test failed"
4980 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4981 EOF
4982 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4983
4984 if ! enabled ppc64 || enabled bigendian; then
4985     disable vsx
4986 fi
4987
4988 check_gas() {
4989     log "check_gas using '$as' as AS"
4990     # :vararg is used on aarch64, arm and ppc altivec
4991     check_as <<EOF || return 1
4992 .macro m n, y:vararg=0
4993 \n: .int \y
4994 .endm
4995 m x
4996 EOF
4997     # .altmacro is only used in arm asm
4998     ! enabled arm || check_as <<EOF || return 1
4999 .altmacro
5000 EOF
5001     enable gnu_as
5002     return 0
5003 }
5004
5005 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5006     nogas=:
5007     enabled_any arm aarch64 && nogas=die
5008     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5009     as_noop=-v
5010
5011     case $as_type in
5012         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5013         gcc)  gaspp_as_type=gas ;;
5014         *)    gaspp_as_type=$as_type ;;
5015     esac
5016
5017     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5018
5019     test "${as#*gas-preprocessor.pl}" != "$as" ||
5020     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5021         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5022
5023     if ! check_gas ; then
5024         as=${gas:=$as}
5025         check_gas || \
5026             $nogas "GNU assembler not found, install/update gas-preprocessor"
5027     fi
5028
5029     check_as <<EOF && enable as_func
5030 .func test
5031 .endfunc
5032 EOF
5033 fi
5034
5035 check_inline_asm inline_asm_labels '"1:\n"'
5036
5037 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5038
5039 if enabled aarch64; then
5040     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5041     # internal assembler in clang 3.3 does not support this instruction
5042     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5043     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5044
5045     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5046
5047 elif enabled alpha; then
5048
5049     check_cflags -mieee
5050
5051 elif enabled arm; then
5052
5053     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5054
5055     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5056 float func(float a, float b){ return a+b; }
5057 EOF
5058
5059     enabled thumb && check_cflags -mthumb || check_cflags -marm
5060
5061     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5062         enable vfp_args
5063     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5064         enable vfp_args
5065     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5066         case "${cross_prefix:-$cc}" in
5067             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5068             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5069 __asm__ (".eabi_attribute 28, 1");
5070 int main(void) { return 0; }
5071 EOF
5072         esac
5073         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5074     fi
5075
5076     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5077     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5078     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5079     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5080     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5081     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5082     enabled setend  && check_insn setend  'setend be'
5083
5084     [ $target_os = linux ] || [ $target_os = android ] ||
5085         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5086             $ARCH_EXT_LIST_ARM
5087
5088     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5089
5090     check_as <<EOF && enable as_dn_directive
5091 ra .dn d0.i16
5092 .unreq ra
5093 EOF
5094
5095     # llvm's integrated assembler supports .object_arch from llvm 3.5
5096     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5097 .object_arch armv4
5098 EOF
5099
5100     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5101
5102 elif enabled mips; then
5103
5104     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5105     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5106     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5107
5108     # Enable minimum ISA based on selected options
5109     if enabled mips64; then
5110         if enabled mips64r6; then
5111             check_ldflags "-mips64r6" &&
5112             add_cflags "-mips64r6" &&
5113             add_asflags "-mips64r6" &&
5114             check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
5115             disable mips64r6
5116         fi
5117         if disabled mips64r6 && enabled mips64r2; then
5118             check_ldflags "-mips64r2" &&
5119             add_cflags "-mips64r2" &&
5120             add_asflags "-mips64r2" &&
5121             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
5122             disable mips64r2
5123         fi
5124         if disabled mips64r6 && disabled mips64r2; then
5125             check_ldflags "-mips64" &&
5126             add_cflags "-mips64" &&
5127             add_asflags "-mips64" &&
5128             check_inline_asm mips64r1 '"daddi $0, $0, 0"' ||
5129             disable mips64r1
5130         fi
5131     else
5132         if enabled mips32r6; then
5133             check_ldflags "-mips32r6" &&
5134             add_cflags "-mips32r6" &&
5135             add_asflags "-mips32r6" &&
5136             check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
5137             disable mips32r6
5138         fi
5139         if disabled mips32r6 && enabled mips32r2; then
5140             check_ldflags "-mips32r2" &&
5141             add_cflags "-mips32r2" &&
5142             add_asflags "-mips32r2" &&
5143             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
5144             disable mips32r2
5145         fi
5146         if disabled mips32r6 && disabled mips32r2; then
5147             check_ldflags "-mips32" &&
5148             add_cflags "-mips32" &&
5149             add_asflags "-mips32" &&
5150             check_inline_asm mips32r1 '"addi $0, $0, 0"' ||
5151             disable mips32r1
5152         fi
5153     fi
5154
5155     # MIPS FPU
5156     if enabled mipsfpu; then
5157         check_ldflags "-mhard-float" &&
5158         add_cflags "-mhard-float" &&
5159         add_asflags "-mhard-float" &&
5160         check_inline_asm mipsfpu '"cvt.d.l $f0, $f2"' ||
5161         disable mipsfpu
5162     fi
5163
5164     # MSA and DSP support require ISA revision level 2 or greater
5165     if enabled mips32r2 || enabled mips64r2 || enabled mips32r6 || enabled mips64r6; then
5166         # MSA must be used with -mfp64 and -mhard-float
5167         if enabled mipsfpu; then
5168             if enabled msa; then
5169                 check_ldflags "-mfp64 -mmsa" &&
5170                 add_cflags "-mfp64 -mmsa" &&
5171                 add_asflags "-mfp64 -mmsa" &&
5172                 check_inline_asm msa '"addvi.b $w0, $w1, 1"' &&
5173                 check_header msa.h ||
5174                 disable msa
5175             fi
5176         else
5177             disable msa
5178         fi
5179
5180         if enabled mipsdsp; then
5181             check_ldflags "-mdsp" &&
5182             add_cflags "-mdsp" &&
5183             add_asflags "-mdsp" &&
5184             check_inline_asm mipsdsp '"addu.qb $t0, $t1, $t2"' ||
5185             disable mipsdsp
5186         fi
5187         if enabled mipsdspr2; then
5188             check_ldflags "-mdspr2" &&
5189             add_cflags "-mdspr2" &&
5190             add_asflags "-mdspr2" &&
5191             check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"' ||
5192             disable mipsdspr2
5193         fi
5194     fi
5195
5196 elif enabled parisc; then
5197
5198     if enabled gcc; then
5199         case $($cc -dumpversion) in
5200             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5201         esac
5202     fi
5203
5204 elif enabled ppc; then
5205
5206     enable local_aligned_8 local_aligned_16 local_aligned_32
5207
5208     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5209     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5210     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5211     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5212
5213     # AltiVec flags: The FSF version of GCC differs from the Apple version
5214     if enabled altivec; then
5215         check_cflags -maltivec -mabi=altivec &&
5216         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5217         check_cflags -faltivec
5218
5219         # check if our compiler supports Motorola AltiVec C API
5220         check_cc <<EOF || disable altivec
5221 $inc_altivec_h
5222 int main(void) {
5223     vector signed int v1 = (vector signed int) { 0 };
5224     vector signed int v2 = (vector signed int) { 1 };
5225     v1 = vec_add(v1, v2);
5226     return 0;
5227 }
5228 EOF
5229
5230         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5231     fi
5232
5233     if enabled vsx; then
5234         check_cflags -mvsx &&
5235         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5236     fi
5237
5238     if enabled power8; then
5239         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5240     fi
5241
5242 elif enabled x86; then
5243
5244     check_builtin rdtsc    intrin.h   "__rdtsc()"
5245     check_builtin mm_empty mmintrin.h "_mm_empty()"
5246
5247     enable local_aligned_8 local_aligned_16 local_aligned_32
5248
5249     # check whether EBP is available on x86
5250     # As 'i' is stored on the stack, this program will crash
5251     # if the base pointer is used to access it because the
5252     # base pointer is cleared in the inline assembly code.
5253     check_exec_crash <<EOF && enable ebp_available
5254 volatile int i=0;
5255 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5256 return i;
5257 EOF
5258
5259     # check whether EBX is available on x86
5260     check_inline_asm ebx_available '""::"b"(0)' &&
5261         check_inline_asm ebx_available '"":::"%ebx"'
5262
5263     # check whether xmm clobbers are supported
5264     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5265
5266     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5267         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5268
5269     # check whether binutils is new enough to compile SSSE3/MMXEXT
5270     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5271     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5272
5273     if ! disabled_any asm mmx yasm; then
5274         if check_cmd $yasmexe --version; then
5275             enabled x86_64 && yasm_extra="-m amd64"
5276             yasm_debug="-g dwarf2"
5277         elif check_cmd nasm -v; then
5278             yasmexe=nasm
5279             yasm_debug="-g -F dwarf"
5280             if enabled x86_64; then
5281                 case "$objformat" in
5282                     elf)   objformat=elf64 ;;
5283                     win32) objformat=win64 ;;
5284                 esac
5285             fi
5286         fi
5287
5288         YASMFLAGS="-f $objformat $yasm_extra"
5289         enabled pic               && append YASMFLAGS "-DPIC"
5290         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5291         case "$objformat" in
5292             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5293         esac
5294
5295         check_yasm "movbe ecx, [5]" && enable yasm ||
5296             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5297         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5298         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5299         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5300         check_yasm "CPU amdnop" || disable cpunop
5301     fi
5302
5303     case "$cpu" in
5304         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5305             disable fast_clz
5306         ;;
5307     esac
5308
5309 fi
5310
5311 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5312
5313 check_ldflags -Wl,--as-needed
5314 check_ldflags -Wl,-z,noexecstack
5315
5316 if check_func dlopen; then
5317     ldl=
5318 elif check_func dlopen -ldl; then
5319     ldl=-ldl
5320 fi
5321
5322 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5323 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5324 frei0r_filter_extralibs='$ldl'
5325 frei0r_src_filter_extralibs='$ldl'
5326 ladspa_filter_extralibs='$ldl'
5327 nvenc_encoder_extralibs='$ldl'
5328
5329 if ! disabled network; then
5330     check_func getaddrinfo $network_extralibs
5331     check_func inet_aton $network_extralibs
5332
5333     check_type netdb.h "struct addrinfo"
5334     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5335     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5336     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5337     check_type poll.h "struct pollfd"
5338     check_type netinet/sctp.h "struct sctp_event_subscribe"
5339     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5340     check_type netinet/in.h "struct sockaddr_in6"
5341     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5342     check_type "sys/types.h sys/socket.h" socklen_t
5343
5344     # Prefer arpa/inet.h over winsock2
5345     if check_header arpa/inet.h ; then
5346         check_func closesocket
5347     elif check_header winsock2.h ; then
5348         check_func_headers winsock2.h closesocket -lws2 &&
5349             network_extralibs="-lws2" ||
5350         { check_func_headers winsock2.h closesocket -lws2_32 &&
5351             network_extralibs="-lws2_32"; } || disable winsock2_h network
5352         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5353
5354         check_type ws2tcpip.h socklen_t
5355         check_type ws2tcpip.h "struct addrinfo"
5356         check_type ws2tcpip.h "struct group_source_req"
5357         check_type ws2tcpip.h "struct ip_mreq_source"
5358         check_type ws2tcpip.h "struct ipv6_mreq"
5359         check_type winsock2.h "struct pollfd"
5360         check_struct winsock2.h "struct sockaddr" sa_len
5361         check_type ws2tcpip.h "struct sockaddr_in6"
5362         check_type ws2tcpip.h "struct sockaddr_storage"
5363     else
5364         disable network
5365     fi
5366 fi
5367
5368 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5369 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
5370 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5371 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5372 check_builtin sarestart signal.h "SA_RESTART"
5373 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5374 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5375 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5376 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5377
5378 case "$custom_allocator" in
5379     jemalloc)
5380         # jemalloc by default does not use a prefix
5381         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5382     ;;
5383     tcmalloc)
5384         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5385         malloc_prefix=tc_
5386     ;;
5387 esac
5388
5389 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5390 check_func  ${malloc_prefix}memalign            && enable memalign
5391 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5392
5393 check_func  access
5394 check_func  arc4random
5395 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5396 check_func  fcntl
5397 check_func  fork
5398 check_func  gethrtime
5399 check_func  getopt
5400 check_func  getrusage
5401 check_func  gettimeofday
5402 check_func  isatty
5403 check_func  mach_absolute_time
5404 check_func  mkstemp
5405 check_func  mmap
5406 check_func  mprotect
5407 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5408 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5409 check_func  sched_getaffinity
5410 check_func  setrlimit
5411 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5412 check_func  strerror_r
5413 check_func  sysconf
5414 check_func  sysctl
5415 check_func  usleep
5416
5417 check_func_headers conio.h kbhit
5418 check_func_headers io.h setmode
5419 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5420 check_func_headers stdlib.h getenv
5421 check_func_headers sys/stat.h lstat
5422
5423 check_func_headers windows.h CoTaskMemFree -lole32
5424 check_func_headers windows.h GetProcessAffinityMask
5425 check_func_headers windows.h GetProcessTimes
5426 check_func_headers windows.h GetSystemTimeAsFileTime
5427 check_func_headers windows.h MapViewOfFile
5428 check_func_headers windows.h PeekNamedPipe
5429 check_func_headers windows.h SetConsoleTextAttribute
5430 check_func_headers windows.h SetConsoleCtrlHandler
5431 check_func_headers windows.h Sleep
5432 check_func_headers windows.h VirtualAlloc
5433 check_struct windows.h "CONDITION_VARIABLE" Ptr
5434 check_func_headers glob.h glob
5435 enabled xlib &&
5436     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5437
5438 check_header direct.h
5439 check_header dirent.h
5440 check_header dlfcn.h
5441 check_header d3d11.h
5442 check_header dxva.h
5443 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5444 check_header io.h
5445 check_header libcrystalhd/libcrystalhd_if.h
5446 check_header mach/mach_time.h
5447 check_header malloc.h
5448 check_header net/udplite.h
5449 check_header poll.h
5450 check_header sys/mman.h
5451 check_header sys/param.h
5452 check_header sys/resource.h
5453 check_header sys/select.h
5454 check_header sys/time.h
5455 check_header sys/un.h
5456 check_header termios.h
5457 check_header unistd.h
5458 check_header valgrind/valgrind.h
5459 check_header vdpau/vdpau.h
5460 check_header vdpau/vdpau_x11.h
5461 check_header VideoDecodeAcceleration/VDADecoder.h
5462 check_header VideoToolbox/VideoToolbox.h
5463 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5464 check_header windows.h
5465 check_header X11/extensions/XvMClib.h
5466 check_header asm/types.h
5467
5468 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
5469 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
5470 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
5471 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5472
5473 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5474
5475 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5476 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5477 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5478 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5479 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5480
5481 check_type "va/va.h" "VAPictureParameterBufferHEVC"
5482 check_type "va/va.h" "VADecPictureParameterBufferVP9"
5483
5484 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5485
5486 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5487
5488 if ! disabled w32threads && ! enabled pthreads; then
5489     check_func_headers "windows.h process.h" _beginthreadex &&
5490         enable w32threads || disable w32threads
5491     if ! enabled w32threads && enabled winrt; then
5492         check_func_headers "windows.h" CreateThread &&
5493             enable w32threads || disable w32threads
5494     fi
5495 fi
5496
5497 # check for some common methods of building with pthread support
5498 # do this before the optional library checks as some of them require pthreads
5499 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5500     enable pthreads
5501     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5502         add_cflags -pthread
5503         add_extralibs -pthread
5504     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5505         add_cflags -pthreads
5506         add_extralibs -pthreads
5507     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5508         add_cflags -ldl -pthread
5509         add_extralibs -ldl -pthread
5510     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5511         add_extralibs -lpthreadGC2
5512     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5513         :
5514     elif ! check_func pthread_join && ! check_func pthread_create; then
5515         disable pthreads
5516     fi
5517     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5518 fi
5519
5520
5521 if enabled pthreads; then
5522   check_func pthread_cancel
5523 fi
5524
5525 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
5526 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
5527 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
5528
5529 check_lib math.h sin -lm && LIBM="-lm"
5530 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5531
5532 atan2f_args=2
5533 copysign_args=2
5534 hypot_args=2
5535 ldexpf_args=2
5536 powf_args=2
5537
5538 for func in $MATH_FUNCS; do
5539     eval check_mathfunc $func \${${func}_args:-1}
5540 done
5541
5542 for func in $COMPLEX_FUNCS; do
5543     eval check_complexfunc $func \${${func}_args:-1}
5544 done
5545
5546 # these are off by default, so fail if requested and not available
5547 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5548 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5549                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5550 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
5551                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
5552                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
5553 enabled cuda              && check_lib cuda.h cuInit -lcuda
5554 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5555 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
5556 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5557 enabled gmp               && require2 gmp gmp.h mpz_export -lgmp
5558 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5559 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5560 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5561 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5562 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5563 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5564 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5565                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5566                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5567 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5568 enabled libdcadec         && require_pkg_config "dcadec >= 0.1.0" libdcadec/dca_context.h dcadec_context_create
5569 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
5570 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5571                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5572                                  warn "using libfdk without pkg-config"; } }
5573 flite_libs="-lflite_cmu_time_awb -lflite_cmu_us_awb -lflite_cmu_us_kal -lflite_cmu_us_kal16 -lflite_cmu_us_rms -lflite_cmu_us_slt -lflite_usenglish -lflite_cmulex -lflite"
5574 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5575 enabled fontconfig        && enable libfontconfig
5576 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5577 enabled libfreetype       && require_libfreetype
5578 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5579 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5580 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5581                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5582                                done || die "ERROR: libgsm not found"; }
5583 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5584 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5585 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5586 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5587 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5588 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5589 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5590 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5591 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5592                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5593                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5594                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5595 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5596 enabled libopenjpeg       && { check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC ||
5597                                check_lib openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC ||
5598                                check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5599                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5600                                die "ERROR: libopenjpeg not found"; }
5601 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5602 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5603 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5604 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5605 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5606 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5607 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5608                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5609 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5610 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5611 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5612 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5613 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5614 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5615 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5616                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5617                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5618 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
5619 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5620 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5621 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5622 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5623
5624 enabled libvpx            && {
5625     enabled libvpx_vp8_decoder && {
5626         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5627             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5628                 die "ERROR: libvpx decoder version must be >=0.9.1";
5629     }
5630     enabled libvpx_vp8_encoder && {
5631         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5632             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5633                 die "ERROR: libvpx encoder version must be >=0.9.7";
5634     }
5635     enabled libvpx_vp9_decoder && {
5636         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5637             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5638                 disable libvpx_vp9_decoder;
5639     }
5640     enabled libvpx_vp9_encoder && {
5641         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5642             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5643                 disable libvpx_vp9_encoder;
5644     }
5645     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5646         die "libvpx enabled but no supported decoders found"
5647     fi
5648 }
5649
5650 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5651 enabled libwebp           && {
5652     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5653     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5654 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5655                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5656                                  warn "using libx264 without pkg-config"; } } &&
5657                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5658                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5659                              { check_cpp_condition x264.h "X264_MPEG2" &&
5660                                enable libx262; }
5661 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5662                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5663                                die "ERROR: libx265 version must be >= 68."; }
5664 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5665 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5666 enabled libzimg           && require_pkg_config zimg zimg.h zimg_get_api_version
5667 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5668 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5669                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5670                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5671 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5672                                 { ! enabled cross_compile && {
5673                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5674                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5675                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5676                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5677                                die "ERROR: mmal not found"; }
5678 enabled mmal &&
5679     (check_code cc interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS" ||
5680      die "ERROR: mmal firmware headers too old")
5681
5682 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5683 enabled nvenc             && { check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."; } &&
5684                              { check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 5" ||
5685                                die "ERROR: NVENC API version 4 or older is not supported"; } &&
5686                              { [ $target_os != cygwin ] || die "ERROR: NVENC is not supported on Cygwin currently."; }
5687 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5688                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5689                                die "ERROR: openal not found"; } &&
5690                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5691                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5692 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5693                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5694                                die "ERROR: opencl not found"; } &&
5695                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5696                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5697                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5698 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5699                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5700                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5701                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5702                                die "ERROR: opengl not found."
5703                              }
5704 enabled openssl           && { use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5705                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5706                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5707                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5708                                die "ERROR: openssl not found"; }
5709 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5710
5711 # libdc1394 check
5712 if enabled libdc1394; then
5713     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5714         enable libdc1394_2; } ||
5715     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5716         enable libdc1394_1; } ||
5717     die "ERROR: No version of libdc1394 found "
5718 fi
5719
5720 if enabled gcrypt; then
5721     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5722     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5723         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5724         gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
5725         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
5726             die "ERROR: gcrypt not found"
5727         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
5728     else
5729         require2 gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5730     fi
5731 fi
5732
5733 if ! disabled sdl; then
5734     SDL_CONFIG="${cross_prefix}sdl-config"
5735     if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
5736         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5737         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5738         enable sdl
5739     else
5740         if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
5741             sdl_cflags=$("${SDL_CONFIG}" --cflags)
5742             sdl_libs=$("${SDL_CONFIG}" --libs)
5743             check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
5744             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5745             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5746             enable sdl
5747         elif enabled sdl ; then
5748             die "ERROR: SDL not found"
5749         else
5750             disable sdl
5751         fi
5752     fi
5753     if test $target_os = "mingw32"; then
5754         sdl_libs="$sdl_libs -mconsole"
5755     fi
5756 fi
5757 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
5758
5759 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5760     check_lib2 "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5761     enable securetransport; }
5762
5763 disabled schannel || { check_func_headers "windows.h Security.h" InitializeSecurityContext -DSECURITY_WIN32 -lSecur32 &&
5764                        enable schannel && add_extralibs -lSecur32; }
5765
5766 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5767 enabled makeinfo \
5768     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5769     && enable makeinfo_html || disable makeinfo_html
5770 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5771 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5772 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5773 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5774
5775 check_header linux/fb.h
5776 check_header linux/videodev.h
5777 check_header linux/videodev2.h
5778 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5779
5780 check_header sys/videoio.h
5781 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5782
5783 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5784 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5785 # w32api 3.12 had it defined wrong
5786 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5787
5788 check_type "dshow.h" IBaseFilter
5789
5790 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5791 { check_header dev/bktr/ioctl_meteor.h &&
5792   check_header dev/bktr/ioctl_bt848.h; } ||
5793 { check_header machine/ioctl_meteor.h &&
5794   check_header machine/ioctl_bt848.h; } ||
5795 { check_header dev/video/meteor/ioctl_meteor.h &&
5796   check_header dev/video/bktr/ioctl_bt848.h; } ||
5797 check_header dev/ic/bt8xx.h
5798
5799 check_header sndio.h
5800 if check_struct sys/soundcard.h audio_buf_info bytes; then
5801     enable_safe sys/soundcard.h
5802 else
5803     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5804     #include <sys/soundcard.h>
5805     audio_buf_info abc;
5806 EOF
5807 fi
5808 check_header soundcard.h
5809
5810 enabled_any alsa_indev alsa_outdev &&
5811     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5812
5813 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
5814     check_func jack_port_get_latency_range -ljack
5815
5816 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
5817
5818 if enabled libcdio; then
5819     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5820     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5821     die "ERROR: No usable libcdio/cdparanoia found"
5822 fi
5823
5824 enabled xlib &&
5825     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
5826
5827 if ! disabled libxcb; then
5828     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
5829         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
5830     } && disable x11grab && enable libxcb
5831
5832 if enabled libxcb; then
5833     disabled libxcb_shm || {
5834         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
5835             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
5836         } && check_header sys/shm.h && enable libxcb_shm; }
5837
5838     disabled libxcb_xfixes || {
5839         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
5840             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
5841         } && enable libxcb_xfixes; }
5842
5843     disabled libxcb_shape || {
5844         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
5845             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
5846         } && enable libxcb_shape; }
5847
5848     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
5849     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
5850 fi
5851 fi
5852
5853 if enabled x11grab; then
5854     enabled xlib || die "ERROR: Xlib not found"
5855     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
5856     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
5857 fi
5858
5859 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
5860
5861 enabled dxva2api_h &&
5862     check_cc <<EOF && enable dxva2api_cobj
5863 #define _WIN32_WINNT 0x0600
5864 #define COBJMACROS
5865 #include <windows.h>
5866 #include <d3d9.h>
5867 #include <dxva2api.h>
5868 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
5869 EOF
5870
5871 enabled vaapi &&
5872     check_lib va/va.h vaInitialize -lva ||
5873     disable vaapi
5874
5875 enabled vaapi && enabled xlib &&
5876     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
5877     enable vaapi_x11
5878
5879 enabled vdpau &&
5880     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
5881     disable vdpau
5882
5883 enabled vdpau && enabled xlib &&
5884     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
5885     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
5886     enable vdpau_x11
5887
5888 # Funny iconv installations are not unusual, so check it after all flags have been set
5889 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
5890
5891 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
5892
5893 # add some useful compiler flags if supported
5894 check_cflags -Wdeclaration-after-statement
5895 check_cflags -Wall
5896 check_cflags -Wdisabled-optimization
5897 check_cflags -Wpointer-arith
5898 check_cflags -Wredundant-decls
5899 check_cflags -Wwrite-strings
5900 check_cflags -Wtype-limits
5901 check_cflags -Wundef
5902 check_cflags -Wmissing-prototypes
5903 check_cflags -Wno-pointer-to-int-cast
5904 check_cflags -Wstrict-prototypes
5905 check_cflags -Wempty-body
5906 enabled extra_warnings && check_cflags -Winline
5907 enabled extra_warnings && check_cflags -Wcast-qual
5908
5909 check_disable_warning(){
5910     warning_flag=-W${1#-Wno-}
5911     test_cflags $warning_flag && add_cflags $1
5912 }
5913
5914 check_disable_warning -Wno-parentheses
5915 check_disable_warning -Wno-switch
5916 check_disable_warning -Wno-format-zero-length
5917 check_disable_warning -Wno-pointer-sign
5918 check_disable_warning -Wno-unused-const-variable
5919
5920 # add some linker flags
5921 check_ldflags -Wl,--warn-common
5922 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
5923 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
5924 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
5925 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
5926
5927 # add some strip flags
5928 # -wN '..@*' is more selective than -x, but not available everywhere.
5929 check_stripflags -wN \'..@*\' || check_stripflags -x
5930
5931 enabled neon_clobber_test &&
5932     check_ldflags -Wl,--wrap,avcodec_open2              \
5933                   -Wl,--wrap,avcodec_decode_audio4      \
5934                   -Wl,--wrap,avcodec_decode_video2      \
5935                   -Wl,--wrap,avcodec_decode_subtitle2   \
5936                   -Wl,--wrap,avcodec_encode_audio2      \
5937                   -Wl,--wrap,avcodec_encode_video2      \
5938                   -Wl,--wrap,avcodec_encode_subtitle    \
5939                   -Wl,--wrap,swr_convert                \
5940                   -Wl,--wrap,avresample_convert ||
5941     disable neon_clobber_test
5942
5943 enabled xmm_clobber_test &&
5944     check_ldflags -Wl,--wrap,avcodec_open2              \
5945                   -Wl,--wrap,avcodec_decode_audio4      \
5946                   -Wl,--wrap,avcodec_decode_video2      \
5947                   -Wl,--wrap,avcodec_decode_subtitle2   \
5948                   -Wl,--wrap,avcodec_encode_audio2      \
5949                   -Wl,--wrap,avcodec_encode_video2      \
5950                   -Wl,--wrap,avcodec_encode_subtitle    \
5951                   -Wl,--wrap,swr_convert                \
5952                   -Wl,--wrap,avresample_convert         \
5953                   -Wl,--wrap,sws_scale ||
5954     disable xmm_clobber_test
5955
5956 echo "X { local: *; };" > $TMPV
5957 if test_ldflags -Wl,--version-script,$TMPV; then
5958     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
5959 elif test_ldflags -Wl,-M,$TMPV; then
5960     append SHFLAGS '-Wl,-M,\$(SUBDIR)lib\$(NAME).ver-sol2'
5961 fi
5962
5963 check_cc <<EOF && enable symver_asm_label
5964 void ff_foo(void) __asm__ ("av_foo@VERSION");
5965 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
5966 EOF
5967     check_cc <<EOF && enable symver_gnu_asm
5968 __asm__(".symver ff_foo,av_foo@VERSION");
5969 void ff_foo(void) {}
5970 EOF
5971
5972 if [ -z "$optflags" ]; then
5973     if enabled small; then
5974         optflags=$cflags_size
5975     elif enabled optimizations; then
5976         optflags=$cflags_speed
5977     else
5978         optflags=$cflags_noopt
5979     fi
5980 fi
5981
5982 check_optflags(){
5983     check_cflags "$@"
5984     enabled lto && check_ldflags "$@"
5985 }
5986
5987
5988 if enabled lto; then
5989     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
5990     check_cflags  -flto
5991     check_ldflags -flto $cpuflags
5992     disable inline_asm_direct_symbol_refs
5993 fi
5994
5995 check_optflags $optflags
5996 check_optflags -fno-math-errno
5997 check_optflags -fno-signed-zeros
5998
5999 enabled ftrapv && check_cflags -ftrapv
6000
6001 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6002 int x;
6003 EOF
6004
6005
6006 if enabled icc; then
6007     # Just warnings, no remarks
6008     check_cflags -w1
6009     # -wd: Disable following warnings
6010     # 144, 167, 556: -Wno-pointer-sign
6011     # 188: enumerated type mixed with another type
6012     # 1292: attribute "foo" ignored
6013     # 1419: external declaration in primary source file
6014     # 10006: ignoring unknown option -fno-signed-zeros
6015     # 10148: ignoring unknown option -Wno-parentheses
6016     # 10156: ignoring option '-W'; no argument required
6017     # 13200: No EMMS instruction before call to function
6018     # 13203: No EMMS instruction before return from function
6019     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6020     # 11030: Warning unknown option --as-needed
6021     # 10156: ignoring option '-export'; no argument required
6022     check_ldflags -wd10156,11030
6023     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6024     enable ebp_available
6025     # The test above does not test linking
6026     enabled lto && disable symver_asm_label
6027     if enabled x86_32; then
6028         icc_version=$($cc -dumpversion)
6029         test ${icc_version%%.*} -ge 11 &&
6030             check_cflags -falign-stack=maintain-16-byte ||
6031             disable aligned_stack
6032     fi
6033 elif enabled ccc; then
6034     # disable some annoying warnings
6035     add_cflags -msg_disable bitnotint
6036     add_cflags -msg_disable mixfuncvoid
6037     add_cflags -msg_disable nonstandcast
6038     add_cflags -msg_disable unsupieee
6039 elif enabled gcc; then
6040     case $gcc_basever in
6041         4.9*) enabled x86 || check_optflags -fno-tree-vectorize ;;
6042         4.*)                 check_optflags -fno-tree-vectorize ;;
6043         *)    enabled x86 || check_optflags -fno-tree-vectorize ;;
6044     esac
6045     check_cflags -Werror=format-security
6046     check_cflags -Werror=implicit-function-declaration
6047     check_cflags -Werror=missing-prototypes
6048     check_cflags -Werror=return-type
6049     check_cflags -Werror=vla
6050     check_cflags -Wformat
6051     check_cflags -fdiagnostics-color=auto
6052     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6053 elif enabled llvm_gcc; then
6054     check_cflags -mllvm -stack-alignment=16
6055 elif enabled clang; then
6056     check_cflags -mllvm -stack-alignment=16
6057     check_cflags -Qunused-arguments
6058     check_cflags -Werror=implicit-function-declaration
6059     check_cflags -Werror=missing-prototypes
6060     check_cflags -Werror=return-type
6061 elif enabled cparser; then
6062     add_cflags -Wno-missing-variable-declarations
6063     add_cflags -Wno-empty-statement
6064 elif enabled armcc; then
6065     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6066     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6067     # 2523: use of inline assembly is deprecated
6068     add_cflags -W${armcc_opt},--diag_suppress=2523
6069     add_cflags -W${armcc_opt},--diag_suppress=1207
6070     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6071     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6072     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6073     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6074 elif enabled tms470; then
6075     add_cflags -pds=824 -pds=837
6076     disable inline_asm
6077 elif enabled pathscale; then
6078     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6079 elif enabled_any msvc icl; then
6080     enabled x86_32 && disable aligned_stack
6081     enabled_all x86_32 debug && add_cflags -Oy-
6082     enabled debug && add_ldflags -debug
6083     enable pragma_deprecated
6084     if enabled icl; then
6085         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6086         # (correctly) on icl 13.x.
6087         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6088             add_cflags -Qansi-alias
6089         # Some inline asm is not compilable in debug
6090         if enabled debug; then
6091             disable ebp_available
6092             disable ebx_available
6093         fi
6094     fi
6095     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6096     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6097     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6098     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6099     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6100     # MSVC 2013 and newer can handle it fine.
6101     # If this declspec fails, force including stdlib.h before the restrict redefinition
6102     # happens in config.h.
6103     if [ $_restrict != restrict ]; then
6104         check_cc <<EOF || add_cflags -FIstdlib.h
6105 __declspec($_restrict) void* foo(int);
6106 EOF
6107     fi
6108     check_func strtoll || add_cflags -Dstrtoll=_strtoi64
6109 fi
6110
6111 for pfx in "" host_; do
6112     varname=${pfx%_}cc_type
6113     eval "type=\$$varname"
6114     if [ $type = "msvc" ]; then
6115         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6116 static inline int foo(int a) { return a; }
6117 EOF
6118     fi
6119 done
6120
6121 case $as_type in
6122     clang)
6123         add_asflags -Qunused-arguments
6124     ;;
6125 esac
6126
6127 case $ld_type in
6128     clang)
6129         check_ldflags -Qunused-arguments
6130     ;;
6131 esac
6132
6133 case $target_os in
6134     osf1)
6135         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6136     ;;
6137     plan9)
6138         add_cppflags -Dmain=plan9_main
6139     ;;
6140 esac
6141
6142 enable frame_thread_encoder
6143
6144 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6145
6146 check_deps $CONFIG_LIST       \
6147            $CONFIG_EXTRA      \
6148            $HAVE_LIST         \
6149            $ALL_COMPONENTS    \
6150
6151 enabled threads && ! enabled pthreads && ! enabled atomics_native && die "non pthread threading without atomics not supported, try adding --enable-pthreads or --cpu=i486 or higher if you are on x86"
6152
6153
6154 if test $target_os = "haiku"; then
6155     disable memalign
6156     disable posix_memalign
6157 fi
6158
6159 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
6160     prepend ffmpeg_libs $($ldflags_filter "-lole32" "-luser32") &&
6161     enable dxva2_lib
6162
6163 ! enabled_any memalign posix_memalign aligned_malloc &&
6164     enabled simd_align_16 && enable memalign_hack
6165
6166 # add_dep lib dep
6167 # -> enable ${lib}_deps_${dep}
6168 # -> add $dep to ${lib}_deps only once
6169 add_dep() {
6170     lib=$1
6171     dep=$2
6172     enabled "${lib}_deps_${dep}" && return 0
6173     enable  "${lib}_deps_${dep}"
6174     prepend "${lib}_deps" $dep
6175 }
6176
6177 # merge deps lib components
6178 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6179 merge_deps() {
6180     lib=$1
6181     shift
6182     for comp in $*; do
6183         enabled $comp || continue
6184         eval "dep=\"\$${comp}_deps\""
6185         for d in $dep; do
6186             add_dep $lib $d
6187         done
6188     done
6189 }
6190
6191 merge_deps libavfilter $FILTER_LIST
6192
6193 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6194
6195 for thread in $THREADS_LIST; do
6196     if enabled $thread; then
6197         test -n "$thread_type" &&
6198             die "ERROR: Only one thread type must be selected." ||
6199             thread_type="$thread"
6200     fi
6201 done
6202
6203 enabled zlib && add_cppflags -DZLIB_CONST
6204
6205 # conditional library dependencies, in linking order
6206 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6207 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6208 enabled aresample_filter    && prepend avfilter_deps "swresample"
6209 enabled asyncts_filter      && prepend avfilter_deps "avresample"
6210 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6211 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6212 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6213 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6214 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6215 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6216 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6217 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6218 enabled pan_filter          && prepend avfilter_deps "swresample"
6219 enabled pp_filter           && prepend avfilter_deps "postproc"
6220 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6221 enabled resample_filter && prepend avfilter_deps "avresample"
6222 enabled sab_filter          && prepend avfilter_deps "swscale"
6223 enabled scale_filter    && prepend avfilter_deps "swscale"
6224 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6225 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6226 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6227 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6228 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6229 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6230 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6231 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6232 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6233
6234 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6235
6236 enabled opus_decoder    && prepend avcodec_deps "swresample"
6237
6238 expand_deps(){
6239     lib_deps=${1}_deps
6240     eval "deps=\$$lib_deps"
6241     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6242     unique $lib_deps
6243 }
6244
6245 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6246 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6247
6248 map 'expand_deps $v' $LIBRARY_LIST
6249
6250 echo "install prefix            $prefix"
6251 echo "source path               $source_path"
6252 echo "C compiler                $cc"
6253 echo "C library                 $libc_type"
6254 if test "$host_cc" != "$cc"; then
6255     echo "host C compiler           $host_cc"
6256     echo "host C library            $host_libc_type"
6257 fi
6258 echo "ARCH                      $arch ($cpu)"
6259 if test "$build_suffix" != ""; then
6260     echo "build suffix              $build_suffix"
6261 fi
6262 if test "$progs_suffix" != ""; then
6263     echo "progs suffix              $progs_suffix"
6264 fi
6265 if test "$extra_version" != ""; then
6266     echo "version string suffix     $extra_version"
6267 fi
6268 echo "big-endian                ${bigendian-no}"
6269 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6270 if enabled x86; then
6271     echo "${yasmexe}                      ${yasm-no}"
6272     echo "MMX enabled               ${mmx-no}"
6273     echo "MMXEXT enabled            ${mmxext-no}"
6274     echo "3DNow! enabled            ${amd3dnow-no}"
6275     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6276     echo "SSE enabled               ${sse-no}"
6277     echo "SSSE3 enabled             ${ssse3-no}"
6278     echo "AESNI enabled             ${aesni-no}"
6279     echo "AVX enabled               ${avx-no}"
6280     echo "XOP enabled               ${xop-no}"
6281     echo "FMA3 enabled              ${fma3-no}"
6282     echo "FMA4 enabled              ${fma4-no}"
6283     echo "i686 features enabled     ${i686-no}"
6284     echo "CMOV is fast              ${fast_cmov-no}"
6285     echo "EBX available             ${ebx_available-no}"
6286     echo "EBP available             ${ebp_available-no}"
6287 fi
6288 if enabled aarch64; then
6289     echo "NEON enabled              ${neon-no}"
6290     echo "VFP enabled               ${vfp-no}"
6291 fi
6292 if enabled arm; then
6293     echo "ARMv5TE enabled           ${armv5te-no}"
6294     echo "ARMv6 enabled             ${armv6-no}"
6295     echo "ARMv6T2 enabled           ${armv6t2-no}"
6296     echo "VFP enabled               ${vfp-no}"
6297     echo "NEON enabled              ${neon-no}"
6298     echo "THUMB enabled             ${thumb-no}"
6299 fi
6300 if enabled mips; then
6301     echo "MIPS FPU enabled          ${mipsfpu-no}"
6302     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6303     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6304     echo "MIPS MSA enabled          ${msa-no}"
6305     echo "LOONGSON MMI enabled      ${mmi-no}"
6306 fi
6307 if enabled ppc; then
6308     echo "AltiVec enabled           ${altivec-no}"
6309     echo "VSX enabled               ${vsx-no}"
6310     echo "POWER8 enabled            ${power8-no}"
6311     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6312     echo "dcbzl available           ${dcbzl-no}"
6313 fi
6314 echo "debug symbols             ${debug-no}"
6315 echo "strip symbols             ${stripping-no}"
6316 echo "optimize for size         ${small-no}"
6317 echo "optimizations             ${optimizations-no}"
6318 echo "static                    ${static-no}"
6319 echo "shared                    ${shared-no}"
6320 echo "postprocessing support    ${postproc-no}"
6321 echo "new filter support        ${avfilter-no}"
6322 echo "network support           ${network-no}"
6323 echo "threading support         ${thread_type-no}"
6324 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6325 echo "SDL support               ${sdl-no}"
6326 echo "opencl enabled            ${opencl-no}"
6327 echo "texi2html enabled         ${texi2html-no}"
6328 echo "perl enabled              ${perl-no}"
6329 echo "pod2man enabled           ${pod2man-no}"
6330 echo "makeinfo enabled          ${makeinfo-no}"
6331 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6332 test -n "$random_seed" &&
6333     echo "random seed               ${random_seed}"
6334 echo
6335
6336 echo "Enabled programs:"
6337 print_enabled '' $PROGRAM_LIST | print_in_columns
6338 echo
6339
6340 echo "External libraries:"
6341 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6342 echo
6343
6344 echo "Libraries:"
6345 print_enabled '' $LIBRARY_LIST | print_in_columns
6346 echo
6347
6348 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6349     echo "Enabled ${type}s:"
6350     eval list=\$$(toupper $type)_LIST
6351     print_enabled '_*' $list | print_in_columns
6352     echo
6353 done
6354
6355 license="LGPL version 2.1 or later"
6356 if enabled nonfree; then
6357     license="nonfree and unredistributable"
6358 elif enabled gplv3; then
6359     license="GPL version 3 or later"
6360 elif enabled lgplv3; then
6361     license="LGPL version 3 or later"
6362 elif enabled gpl; then
6363     license="GPL version 2 or later"
6364 fi
6365
6366 echo "License: $license"
6367
6368 echo "Creating config.mak, config.h, and doc/config.texi..."
6369
6370 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6371
6372 enabled stripping || strip="echo skipping strip"
6373
6374 config_files="$TMPH config.mak doc/config.texi"
6375
6376 cat > config.mak <<EOF
6377 # Automatically generated by configure - do not modify!
6378 ifndef FFMPEG_CONFIG_MAK
6379 FFMPEG_CONFIG_MAK=1
6380 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6381 prefix=$prefix
6382 LIBDIR=\$(DESTDIR)$libdir
6383 SHLIBDIR=\$(DESTDIR)$shlibdir
6384 INCDIR=\$(DESTDIR)$incdir
6385 BINDIR=\$(DESTDIR)$bindir
6386 DATADIR=\$(DESTDIR)$datadir
6387 DOCDIR=\$(DESTDIR)$docdir
6388 MANDIR=\$(DESTDIR)$mandir
6389 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6390 INSTALL_NAME_DIR=$install_name_dir
6391 SRC_PATH=$source_path
6392 SRC_LINK=$source_link
6393 ifndef MAIN_MAKEFILE
6394 SRC_PATH:=\$(SRC_PATH:.%=..%)
6395 endif
6396 CC_IDENT=$cc_ident
6397 ARCH=$arch
6398 INTRINSICS=$intrinsics
6399 CC=$cc
6400 CXX=$cxx
6401 AS=$as
6402 OBJCC=$objcc
6403 LD=$ld
6404 DEPCC=$dep_cc
6405 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6406 DEPAS=$as
6407 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6408 YASM=$yasmexe
6409 DEPYASM=$yasmexe
6410 AR=$ar
6411 ARFLAGS=$arflags
6412 AR_O=$ar_o
6413 RANLIB=$ranlib
6414 STRIP=$strip
6415 CP=cp -p
6416 LN_S=$ln_s
6417 CPPFLAGS=$CPPFLAGS
6418 CFLAGS=$CFLAGS
6419 CXXFLAGS=$CXXFLAGS
6420 OBJCFLAGS=$OBJCFLAGS
6421 ASFLAGS=$ASFLAGS
6422 AS_C=$AS_C
6423 AS_O=$AS_O
6424 OBJCC_C=$OBJCC_C
6425 OBJCC_E=$OBJCC_E
6426 OBJCC_O=$OBJCC_O
6427 CC_C=$CC_C
6428 CC_E=$CC_E
6429 CC_O=$CC_O
6430 CXX_C=$CXX_C
6431 CXX_O=$CXX_O
6432 LD_O=$LD_O
6433 LD_LIB=$LD_LIB
6434 LD_PATH=$LD_PATH
6435 DLLTOOL=$dlltool
6436 WINDRES=$windres
6437 DEPWINDRES=$dep_cc
6438 DOXYGEN=$doxygen
6439 LDFLAGS=$LDFLAGS
6440 LDEXEFLAGS=$LDEXEFLAGS
6441 LDLIBFLAGS=$LDLIBFLAGS
6442 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6443 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6444 YASMFLAGS=$YASMFLAGS
6445 BUILDSUF=$build_suffix
6446 PROGSSUF=$progs_suffix
6447 FULLNAME=$FULLNAME
6448 LIBPREF=$LIBPREF
6449 LIBSUF=$LIBSUF
6450 LIBNAME=$LIBNAME
6451 SLIBPREF=$SLIBPREF
6452 SLIBSUF=$SLIBSUF
6453 EXESUF=$EXESUF
6454 EXTRA_VERSION=$extra_version
6455 CCDEP=$CCDEP
6456 CXXDEP=$CXXDEP
6457 CCDEP_FLAGS=$CCDEP_FLAGS
6458 ASDEP=$ASDEP
6459 ASDEP_FLAGS=$ASDEP_FLAGS
6460 CC_DEPFLAGS=$CC_DEPFLAGS
6461 AS_DEPFLAGS=$AS_DEPFLAGS
6462 HOSTCC=$host_cc
6463 HOSTLD=$host_ld
6464 HOSTCFLAGS=$host_cflags
6465 HOSTCPPFLAGS=$host_cppflags
6466 HOSTEXESUF=$HOSTEXESUF
6467 HOSTLDFLAGS=$host_ldflags
6468 HOSTLIBS=$host_libs
6469 DEPHOSTCC=$host_cc
6470 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6471 HOSTCCDEP=$HOSTCCDEP
6472 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6473 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6474 HOSTCC_C=$HOSTCC_C
6475 HOSTCC_O=$HOSTCC_O
6476 HOSTLD_O=$HOSTLD_O
6477 TARGET_EXEC=$target_exec $target_exec_args
6478 TARGET_PATH=$target_path
6479 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6480 CFLAGS-ffplay=$sdl_cflags
6481 ZLIB=$($ldflags_filter -lz)
6482 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6483 EXTRALIBS=$extralibs
6484 COMPAT_OBJS=$compat_objs
6485 EXEOBJS=$exeobjs
6486 INSTALL=$install
6487 LIBTARGET=${LIBTARGET}
6488 SLIBNAME=${SLIBNAME}
6489 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6490 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6491 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6492 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6493 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6494 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6495 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6496 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6497 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6498 NOREDZONE_FLAGS=$noredzone_flags
6499 EOF
6500
6501 get_version(){
6502     lcname=lib${1}
6503     name=$(toupper $lcname)
6504     file=$source_path/$lcname/version.h
6505     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6506     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6507     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6508     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6509     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6510     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6511 }
6512
6513 map 'get_version $v' $LIBRARY_LIST
6514
6515 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6516
6517 print_program_libs(){
6518     eval "program_libs=\$${1}_libs"
6519     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6520 }
6521
6522 map 'print_program_libs $v' $PROGRAM_LIST
6523
6524 cat > $TMPH <<EOF
6525 /* Automatically generated by configure - do not modify! */
6526 #ifndef FFMPEG_CONFIG_H
6527 #define FFMPEG_CONFIG_H
6528 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6529 #define FFMPEG_LICENSE "$(c_escape $license)"
6530 #define CONFIG_THIS_YEAR 2016
6531 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6532 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6533 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6534 #define av_restrict $_restrict
6535 #define EXTERN_PREFIX "${extern_prefix}"
6536 #define EXTERN_ASM ${extern_prefix}
6537 #define BUILDSUF "$build_suffix"
6538 #define SLIBSUF "$SLIBSUF"
6539 #define HAVE_MMX2 HAVE_MMXEXT
6540 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6541 EOF
6542
6543 test -n "$assert_level" &&
6544     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6545
6546 test -n "$malloc_prefix" &&
6547     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6548
6549 if enabled yasm; then
6550     append config_files $TMPASM
6551     printf '' >$TMPASM
6552 fi
6553
6554 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6555
6556
6557 mkdir -p doc
6558 mkdir -p tests
6559 mkdir -p tests/api
6560 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6561
6562 print_config ARCH_   "$config_files" $ARCH_LIST
6563 print_config HAVE_   "$config_files" $HAVE_LIST
6564 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6565                                      $CONFIG_EXTRA      \
6566                                      $ALL_COMPONENTS    \
6567
6568 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6569 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6570
6571 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6572 cp_if_changed $TMPH config.h
6573 touch .config
6574
6575 enabled yasm && cp_if_changed $TMPASM config.asm
6576
6577 cat > $TMPH <<EOF
6578 /* Generated by ffconf */
6579 #ifndef AVUTIL_AVCONFIG_H
6580 #define AVUTIL_AVCONFIG_H
6581 EOF
6582
6583 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6584
6585 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6586
6587 cp_if_changed $TMPH libavutil/avconfig.h
6588
6589 if test -n "$WARNINGS"; then
6590     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6591     enabled fatal_warnings && exit 1
6592 fi
6593
6594 # build pkg-config files
6595
6596 lib_version(){
6597     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6598 }
6599
6600 pkgconfig_generate(){
6601     name=$1
6602     shortname=${name#lib}${build_suffix}
6603     comment=$2
6604     version=$3
6605     libs=$4
6606     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6607     requires=${requires%, }
6608     enabled ${name#lib} || return 0
6609     mkdir -p $name
6610     cat <<EOF > $name/$name${build_suffix}.pc
6611 prefix=$prefix
6612 exec_prefix=\${prefix}
6613 libdir=$libdir
6614 includedir=$incdir
6615
6616 Name: $name
6617 Description: $comment
6618 Version: $version
6619 Requires: $(enabled shared || echo $requires)
6620 Requires.private: $(enabled shared && echo $requires)
6621 Conflicts:
6622 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6623 Libs.private: $(enabled shared && echo $libs)
6624 Cflags: -I\${includedir}
6625 EOF
6626
6627 mkdir -p doc/examples/pc-uninstalled
6628 includedir=${source_path}
6629 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6630     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
6631 prefix=
6632 exec_prefix=
6633 libdir=\${pcfiledir}/../../../$name
6634 includedir=${includedir}
6635
6636 Name: $name
6637 Description: $comment
6638 Version: $version
6639 Requires: $requires
6640 Conflicts:
6641 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6642 Cflags: -I\${includedir}
6643 EOF
6644 }
6645
6646 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6647 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6648 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6649 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6650 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6651 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6652 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6653 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6654 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"