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-jni             enable JNI support [no]
 211   --enable-ladspa          enable LADSPA audio filtering [no]
 212   --enable-libass          enable libass subtitles rendering,
 213                            needed for subtitles and ass filter [no]
 214   --enable-libbluray       enable BluRay reading using libbluray [no]
 215   --enable-libbs2b         enable bs2b DSP library [no]
 216   --enable-libcaca         enable textual display using libcaca [no]
 217   --enable-libcelt         enable CELT decoding via libcelt [no]
 218   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 219   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 220                            and libraw1394 [no]
 221   --enable-libdcadec       enable DCA decoding via libdcadec [no]
 222   --enable-libfaac         enable AAC encoding via libfaac [no]
 223   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 224   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 225   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 226   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 227   --enable-libgme          enable Game Music Emu via libgme [no]
 228   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 229   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 230   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 231   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 232   --enable-libmfx          enable HW acceleration through libmfx
 233   --enable-libmodplug      enable ModPlug via libmodplug [no]
 234   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 235   --enable-libnut          enable NUT (de)muxing via libnut,
 236                            native (de)muxer exists [no]
 237   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 238   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 239   --enable-libopencv       enable video filtering via libopencv [no]
 240   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 241   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 242   --enable-libopus         enable Opus de/encoding via libopus [no]
 243   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 244   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 245   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 246   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 247   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 248   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 249   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 250   --enable-libsoxr         enable Include libsoxr resampling [no]
 251   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 252   --enable-libssh          enable SFTP protocol via libssh [no]
 253   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 254   --enable-libtheora       enable Theora encoding via libtheora [no]
 255   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 256   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 257   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 258   --enable-libvidstab      enable video stabilization using vid.stab [no]
 259   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 260   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 261                            native implementation exists [no]
 262   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 263   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 264   --enable-libwebp         enable WebP encoding via libwebp [no]
 265   --enable-libx264         enable H.264 encoding via x264 [no]
 266   --enable-libx265         enable HEVC encoding via x265 [no]
 267   --enable-libxavs         enable AVS encoding via xavs [no]
 268   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 269   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 270   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 271   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 272   --enable-libxvid         enable Xvid encoding via xvidcore,
 273                            native MPEG-4/Xvid encoder exists [no]
 274   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 275   --enable-libzmq          enable message passing via libzmq [no]
 276   --enable-libzvbi         enable teletext support via libzvbi [no]
 277   --disable-lzma           disable lzma [autodetect]
 278   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 279   --enable-mediacodec      enable Android MediaCodec support [no]
 280   --enable-mmal            enable decoding via MMAL [no]
 281   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
 282   --enable-nvenc           enable NVIDIA NVENC support [no]
 283   --enable-openal          enable OpenAL 1.1 capture support [no]
 284   --enable-opencl          enable OpenCL code
 285   --enable-opengl          enable OpenGL rendering [no]
 286   --enable-openssl         enable openssl, needed for https support
 287                            if gnutls is not used [no]
 288   --disable-schannel       disable SChannel SSP, needed for TLS support on
 289                            Windows if openssl and gnutls are not used [autodetect]
 290   --disable-sdl            disable sdl [autodetect]
 291   --disable-securetransport disable Secure Transport, needed for TLS support
 292                            on OSX if openssl and gnutls are not used [autodetect]
 293   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 294   --enable-x11grab         enable X11 grabbing (legacy) [no]
 295   --disable-xlib           disable xlib [autodetect]
 296   --disable-zlib           disable zlib [autodetect]
 297
 298 Toolchain options:
 299   --arch=ARCH              select architecture [$arch]
 300   --cpu=CPU                select the minimum required CPU (affects
 301                            instruction selection, may crash on older CPUs)
 302   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 303   --progs-suffix=SUFFIX    program name suffix []
 304   --enable-cross-compile   assume a cross-compiler is used
 305   --sysroot=PATH           root of cross-build tree
 306   --sysinclude=PATH        location of cross-build system headers
 307   --target-os=OS           compiler targets OS [$target_os]
 308   --target-exec=CMD        command to run executables on target
 309   --target-path=DIR        path to view of build directory on target
 310   --target-samples=DIR     path to samples directory on target
 311   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 312   --toolchain=NAME         set tool defaults according to NAME
 313   --nm=NM                  use nm tool NM [$nm_default]
 314   --ar=AR                  use archive tool AR [$ar_default]
 315   --as=AS                  use assembler AS [$as_default]
 316   --strip=STRIP            use strip tool STRIP [$strip_default]
 317   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 318   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 319   --cc=CC                  use C compiler CC [$cc_default]
 320   --cxx=CXX                use C compiler CXX [$cxx_default]
 321   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 322   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 323   --ld=LD                  use linker LD [$ld_default]
 324   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 325   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 326   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 327   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 328   --host-cc=HOSTCC         use host C compiler HOSTCC
 329   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 330   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 331   --host-ld=HOSTLD         use host linker HOSTLD
 332   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 333   --host-libs=HLIBS        use libs HLIBS when linking for host
 334   --host-os=OS             compiler host OS [$target_os]
 335   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 336   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 337   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 338   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 339   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 340   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 341   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 342   --extra-version=STRING   version string suffix []
 343   --optflags=OPTFLAGS      override optimization-related compiler flags
 344   --build-suffix=SUFFIX    library name suffix []
 345   --enable-pic             build position-independent code
 346   --enable-thumb           compile for Thumb instruction set
 347   --enable-lto             use link-time optimization
 348   --env="ENV=override"     override the environment variables
 349
 350 Advanced options (experts only):
 351   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 352   --custom-allocator=NAME  use a supported custom allocator
 353   --disable-symver         disable symbol versioning
 354   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 355   --disable-safe-bitstream-reader
 356                            disable buffer boundary checking in bitreaders
 357                            (faster, but may crash)
 358   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 359   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 360
 361 Optimization options (experts only):
 362   --disable-asm            disable all assembly optimizations
 363   --disable-altivec        disable AltiVec optimizations
 364   --disable-vsx            disable VSX optimizations
 365   --disable-power8         disable POWER8 optimizations
 366   --disable-amd3dnow       disable 3DNow! optimizations
 367   --disable-amd3dnowext    disable 3DNow! extended optimizations
 368   --disable-mmx            disable MMX optimizations
 369   --disable-mmxext         disable MMXEXT optimizations
 370   --disable-sse            disable SSE optimizations
 371   --disable-sse2           disable SSE2 optimizations
 372   --disable-sse3           disable SSE3 optimizations
 373   --disable-ssse3          disable SSSE3 optimizations
 374   --disable-sse4           disable SSE4 optimizations
 375   --disable-sse42          disable SSE4.2 optimizations
 376   --disable-avx            disable AVX optimizations
 377   --disable-xop            disable XOP optimizations
 378   --disable-fma3           disable FMA3 optimizations
 379   --disable-fma4           disable FMA4 optimizations
 380   --disable-avx2           disable AVX2 optimizations
 381   --disable-aesni          disable AESNI optimizations
 382   --disable-armv5te        disable armv5te optimizations
 383   --disable-armv6          disable armv6 optimizations
 384   --disable-armv6t2        disable armv6t2 optimizations
 385   --disable-vfp            disable VFP optimizations
 386   --disable-neon           disable NEON optimizations
 387   --disable-inline-asm     disable use of inline assembly
 388   --disable-yasm           disable use of nasm/yasm assembly
 389   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 390   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 391   --disable-msa            disable MSA optimizations
 392   --disable-mipsfpu        disable floating point MIPS optimizations
 393   --disable-mmi            disable Loongson SIMD optimizations
 394   --disable-fast-unaligned consider unaligned accesses slow
 395
 396 Developer options (useful when working on FFmpeg itself):
 397   --disable-debug          disable debugging symbols
 398   --enable-debug=LEVEL     set the debug level [$debuglevel]
 399   --disable-optimizations  disable compiler optimizations
 400   --enable-extra-warnings  enable more compiler warnings
 401   --disable-stripping      disable stripping of executables and shared libraries
 402   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 403                            2 causes a slowdown at runtime.
 404   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 405   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 406                            leaks and errors, using the specified valgrind binary.
 407                            Cannot be combined with --target-exec
 408   --enable-ftrapv          Trap arithmetic overflows
 409   --samples=PATH           location of test samples for FATE, if not set use
 410                            \$FATE_SAMPLES at make invocation time.
 411   --enable-neon-clobber-test check NEON registers for clobbering (should be
 412                            used only for debugging purposes)
 413   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 414                            should be used only for debugging purposes)
 415   --enable-random          randomly enable/disable components
 416   --disable-random
 417   --enable-random=LIST     randomly enable/disable specific components or
 418   --disable-random=LIST    component groups. LIST is a comma-separated list
 419                            of NAME[:PROB] entries where NAME is a component
 420                            (group) and PROB the probability associated with
 421                            NAME (default 0.5).
 422   --random-seed=VALUE      seed value for --enable/disable-random
 423   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 424                            (only applies to --disable-optimizations builds)
 425
 426 NOTE: Object files are built at the place where configure is launched.
 427 EOF
 428   exit 0
 429 }
 430
 431 quotes='""'
 432 if test -t 1 && which tput >/dev/null 2>&1; then
 433     ncolors=$(tput colors)
 434     if test -n "$ncolors" && test $ncolors -ge 8; then
 435         bold_color=$(tput bold)
 436         warn_color=$(tput setaf 3)
 437         error_color=$(tput setaf 1)
 438         reset_color=$(tput sgr0)
 439     fi
 440     # 72 used instead of 80 since that's the default of pr
 441     ncols=$(tput cols)
 442 fi
 443 : ${ncols:=72}
 444
 445 log(){
 446     echo "$@" >> $logfile
 447 }
 448
 449 log_file(){
 450     log BEGIN $1
 451     pr -n -t $1 >> $logfile
 452     log END $1
 453 }
 454
 455 warn(){
 456     log "WARNING: $*"
 457     WARNINGS="${WARNINGS}WARNING: $*\n"
 458 }
 459
 460 die(){
 461     log "$@"
 462     echo "$error_color$bold_color$@$reset_color"
 463     cat <<EOF
 464
 465 If you think configure made a mistake, make sure you are using the latest
 466 version from Git.  If the latest version fails, report the problem to the
 467 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 468 EOF
 469     if disabled logging; then
 470         cat <<EOF
 471 Rerun configure with logging enabled (do not use --disable-logging), and
 472 include the log this produces with your report.
 473 EOF
 474     else
 475         cat <<EOF
 476 Include the log file "$logfile" produced by configure as this will help
 477 solve the problem.
 478 EOF
 479     fi
 480     exit 1
 481 }
 482
 483 # Avoid locale weirdness, besides we really just want to translate ASCII.
 484 toupper(){
 485     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 486 }
 487
 488 tolower(){
 489     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 490 }
 491
 492 c_escape(){
 493     echo "$*" | sed 's/["\\]/\\\0/g'
 494 }
 495
 496 sh_quote(){
 497     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 498     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 499     echo "$v"
 500 }
 501
 502 cleanws(){
 503     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 504 }
 505
 506 filter(){
 507     pat=$1
 508     shift
 509     for v; do
 510         eval "case $v in $pat) echo $v ;; esac"
 511     done
 512 }
 513
 514 filter_out(){
 515     pat=$1
 516     shift
 517     for v; do
 518         eval "case $v in $pat) ;; *) echo $v ;; esac"
 519     done
 520 }
 521
 522 map(){
 523     m=$1
 524     shift
 525     for v; do eval $m; done
 526 }
 527
 528 add_suffix(){
 529     suffix=$1
 530     shift
 531     for v; do echo ${v}${suffix}; done
 532 }
 533
 534 set_all(){
 535     value=$1
 536     shift
 537     for var in $*; do
 538         eval $var=$value
 539     done
 540 }
 541
 542 set_weak(){
 543     value=$1
 544     shift
 545     for var; do
 546         eval : \${$var:=$value}
 547     done
 548 }
 549
 550 sanitize_var_name(){
 551     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 552 }
 553
 554 set_safe(){
 555     var=$1
 556     shift
 557     eval $(sanitize_var_name "$var")='$*'
 558 }
 559
 560 get_safe(){
 561     eval echo \$$(sanitize_var_name "$1")
 562 }
 563
 564 pushvar(){
 565     for pvar in $*; do
 566         eval level=\${${pvar}_level:=0}
 567         eval ${pvar}_${level}="\$$pvar"
 568         eval ${pvar}_level=$(($level+1))
 569     done
 570 }
 571
 572 popvar(){
 573     for pvar in $*; do
 574         eval level=\${${pvar}_level:-0}
 575         test $level = 0 && continue
 576         eval level=$(($level-1))
 577         eval $pvar="\${${pvar}_${level}}"
 578         eval ${pvar}_level=$level
 579         eval unset ${pvar}_${level}
 580     done
 581 }
 582
 583 enable(){
 584     set_all yes $*
 585 }
 586
 587 disable(){
 588     set_all no $*
 589 }
 590
 591 enable_weak(){
 592     set_weak yes $*
 593 }
 594
 595 disable_weak(){
 596     set_weak no $*
 597 }
 598
 599 enable_safe(){
 600     for var; do
 601         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 602     done
 603 }
 604
 605 disable_safe(){
 606     for var; do
 607         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 608     done
 609 }
 610
 611 do_enable_deep(){
 612     for var; do
 613         enabled $var && continue
 614         eval sel="\$${var}_select"
 615         eval sgs="\$${var}_suggest"
 616         pushvar var sgs
 617         enable_deep $sel
 618         popvar sgs
 619         enable_deep_weak $sgs
 620         popvar var
 621     done
 622 }
 623
 624 enable_deep(){
 625     do_enable_deep $*
 626     enable $*
 627 }
 628
 629 enable_deep_weak(){
 630     for var; do
 631         disabled $var && continue
 632         pushvar var
 633         do_enable_deep $var
 634         popvar var
 635         enable_weak $var
 636     done
 637 }
 638
 639 enabled(){
 640     test "${1#!}" = "$1" && op='=' || op=!=
 641     eval test "x\$${1#!}" $op "xyes"
 642 }
 643
 644 disabled(){
 645     test "${1#!}" = "$1" && op='=' || op=!=
 646     eval test "x\$${1#!}" $op "xno"
 647 }
 648
 649 enabled_all(){
 650     for opt; do
 651         enabled $opt || return 1
 652     done
 653 }
 654
 655 disabled_all(){
 656     for opt; do
 657         disabled $opt || return 1
 658     done
 659 }
 660
 661 enabled_any(){
 662     for opt; do
 663         enabled $opt && return 0
 664     done
 665 }
 666
 667 disabled_any(){
 668     for opt; do
 669         disabled $opt && return 0
 670     done
 671     return 1
 672 }
 673
 674 set_default(){
 675     for opt; do
 676         eval : \${$opt:=\$${opt}_default}
 677     done
 678 }
 679
 680 is_in(){
 681     value=$1
 682     shift
 683     for var in $*; do
 684         [ $var = $value ] && return 0
 685     done
 686     return 1
 687 }
 688
 689 do_check_deps(){
 690     for cfg; do
 691         cfg="${cfg#!}"
 692         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 693         disabled ${cfg}_checking && continue
 694         enable ${cfg}_checking
 695         append allopts $cfg
 696
 697         eval dep_all="\$${cfg}_deps"
 698         eval dep_any="\$${cfg}_deps_any"
 699         eval dep_sel="\$${cfg}_select"
 700         eval dep_sgs="\$${cfg}_suggest"
 701         eval dep_ifa="\$${cfg}_if"
 702         eval dep_ifn="\$${cfg}_if_any"
 703
 704         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 705         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 706         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 707
 708         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 709         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 710         enabled_all  $dep_all || disable $cfg
 711         enabled_any  $dep_any || disable $cfg
 712         disabled_any $dep_sel && disable $cfg
 713
 714         if enabled $cfg; then
 715             enable_deep $dep_sel
 716             enable_deep_weak $dep_sgs
 717         fi
 718
 719         disable ${cfg}_checking
 720     done
 721 }
 722
 723 check_deps(){
 724     unset allopts
 725
 726     do_check_deps "$@"
 727
 728     for cfg in $allopts; do
 729         enabled $cfg || continue
 730         eval dep_extralibs="\$${cfg}_extralibs"
 731         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 732     done
 733 }
 734
 735 print_config(){
 736     pfx=$1
 737     files=$2
 738     shift 2
 739     map 'eval echo "$v \${$v:-no}"' "$@" |
 740     awk "BEGIN { split(\"$files\", files) }
 741         {
 742             c = \"$pfx\" toupper(\$1);
 743             v = \$2;
 744             sub(/yes/, 1, v);
 745             sub(/no/,  0, v);
 746             for (f in files) {
 747                 file = files[f];
 748                 if (file ~ /\\.h\$/) {
 749                     printf(\"#define %s %d\\n\", c, v) >>file;
 750                 } else if (file ~ /\\.asm\$/) {
 751                     printf(\"%%define %s %d\\n\", c, v) >>file;
 752                 } else if (file ~ /\\.mak\$/) {
 753                     n = -v ? \"\" : \"!\";
 754                     printf(\"%s%s=yes\\n\", n, c) >>file;
 755                 } else if (file ~ /\\.texi\$/) {
 756                     pre = -v ? \"\" : \"@c \";
 757                     yesno = \$2;
 758                     c2 = tolower(c);
 759                     gsub(/_/, \"-\", c2);
 760                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 761                 }
 762             }
 763         }"
 764 }
 765
 766 print_enabled(){
 767     suf=$1
 768     shift
 769     for v; do
 770         enabled $v && printf "%s\n" ${v%$suf};
 771     done
 772 }
 773
 774 append(){
 775     var=$1
 776     shift
 777     eval "$var=\"\$$var $*\""
 778 }
 779
 780 prepend(){
 781     var=$1
 782     shift
 783     eval "$var=\"$* \$$var\""
 784 }
 785
 786 unique(){
 787     var=$1
 788     uniq_list=""
 789     for tok in $(eval echo \$$var); do
 790         uniq_list="$(filter_out $tok $uniq_list) $tok"
 791     done
 792     eval "$var=\"${uniq_list}\""
 793 }
 794
 795 add_cppflags(){
 796     append CPPFLAGS "$@"
 797 }
 798
 799 add_cflags(){
 800     append CFLAGS $($cflags_filter "$@")
 801 }
 802
 803 add_cxxflags(){
 804     append CXXFLAGS $($cflags_filter "$@")
 805 }
 806
 807 add_asflags(){
 808     append ASFLAGS $($asflags_filter "$@")
 809 }
 810
 811 add_objcflags(){
 812     append OBJCFLAGS $($objcflags_filter "$@")
 813 }
 814
 815 add_ldflags(){
 816     append LDFLAGS $($ldflags_filter "$@")
 817 }
 818
 819 add_ldexeflags(){
 820     append LDEXEFLAGS $($ldflags_filter "$@")
 821 }
 822
 823 add_ldlibflags(){
 824     append LDLIBFLAGS $($ldflags_filter "$@")
 825 }
 826
 827 add_stripflags(){
 828     append ASMSTRIPFLAGS "$@"
 829 }
 830
 831 add_extralibs(){
 832     prepend extralibs $($ldflags_filter "$@")
 833 }
 834
 835 add_host_cppflags(){
 836     append host_cppflags "$@"
 837 }
 838
 839 add_host_cflags(){
 840     append host_cflags $($host_cflags_filter "$@")
 841 }
 842
 843 add_host_ldflags(){
 844     append host_ldflags $($host_ldflags_filter "$@")
 845 }
 846
 847 add_compat(){
 848     append compat_objs $1
 849     shift
 850     map 'add_cppflags -D$v' "$@"
 851 }
 852
 853 check_cmd(){
 854     log "$@"
 855     "$@" >> $logfile 2>&1
 856 }
 857
 858 check_stat(){
 859     log check_stat "$@"
 860     stat "$1" >> $logfile 2>&1
 861 }
 862
 863 cc_o(){
 864     eval printf '%s\\n' $CC_O
 865 }
 866
 867 cc_e(){
 868     eval printf '%s\\n' $CC_E
 869 }
 870
 871 check_cc(){
 872     log check_cc "$@"
 873     cat > $TMPC
 874     log_file $TMPC
 875     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 876 }
 877
 878 check_cxx(){
 879     log check_cxx "$@"
 880     cat > $TMPCPP
 881     log_file $TMPCPP
 882     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 883 }
 884
 885 check_objcc(){
 886     log check_objcc "$@"
 887     cat > $TMPM
 888     log_file $TMPM
 889     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 890 }
 891
 892 check_cpp(){
 893     log check_cpp "$@"
 894     cat > $TMPC
 895     log_file $TMPC
 896     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 897 }
 898
 899 as_o(){
 900     eval printf '%s\\n' $AS_O
 901 }
 902
 903 check_as(){
 904     log check_as "$@"
 905     cat > $TMPS
 906     log_file $TMPS
 907     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 908 }
 909
 910 check_inline_asm(){
 911     log check_inline_asm "$@"
 912     name="$1"
 913     code="$2"
 914     shift 2
 915     disable $name
 916     check_cc "$@" <<EOF && enable $name
 917 void foo(void){ __asm__ volatile($code); }
 918 EOF
 919 }
 920
 921 check_inline_asm_flags(){
 922     log check_inline_asm_flags "$@"
 923     name="$1"
 924     code="$2"
 925     flags=''
 926     shift 2
 927     while [ "$1" != "" ]; do
 928       append flags $1
 929       shift
 930     done;
 931     disable $name
 932     cat > $TMPC <<EOF
 933 void foo(void){ __asm__ volatile($code); }
 934 EOF
 935     log_file $TMPC
 936     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 937     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 938 }
 939
 940 check_insn(){
 941     log check_insn "$@"
 942     check_inline_asm ${1}_inline "\"$2\""
 943     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 944 }
 945
 946 check_yasm(){
 947     log check_yasm "$@"
 948     echo "$1" > $TMPS
 949     log_file $TMPS
 950     shift 1
 951     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 952 }
 953
 954 ld_o(){
 955     eval printf '%s\\n' $LD_O
 956 }
 957
 958 check_ld(){
 959     log check_ld "$@"
 960     type=$1
 961     shift 1
 962     flags=$(filter_out '-l*|*.so' $@)
 963     libs=$(filter '-l*|*.so' $@)
 964     check_$type $($cflags_filter $flags) || return
 965     flags=$($ldflags_filter $flags)
 966     libs=$($ldflags_filter $libs)
 967     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 968 }
 969
 970 print_include(){
 971     hdr=$1
 972     test "${hdr%.h}" = "${hdr}" &&
 973         echo "#include $hdr"    ||
 974         echo "#include <$hdr>"
 975 }
 976
 977 check_code(){
 978     log check_code "$@"
 979     check=$1
 980     headers=$2
 981     code=$3
 982     shift 3
 983     {
 984         for hdr in $headers; do
 985             print_include $hdr
 986         done
 987         echo "int main(void) { $code; return 0; }"
 988     } | check_$check "$@"
 989 }
 990
 991 check_cppflags(){
 992     log check_cppflags "$@"
 993     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 994 int x;
 995 EOF
 996 }
 997
 998 test_cflags(){
 999     log test_cflags "$@"
1000     set -- $($cflags_filter "$@")
1001     check_cc "$@" <<EOF
1002 int x;
1003 EOF
1004 }
1005
1006 check_cflags(){
1007     log check_cflags "$@"
1008     test_cflags "$@" && add_cflags "$@"
1009 }
1010
1011 check_cxxflags(){
1012     log check_cxxflags "$@"
1013     set -- $($cflags_filter "$@")
1014     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1015 int x;
1016 EOF
1017 }
1018
1019 test_objcflags(){
1020     log test_cflags "$@"
1021     set -- $($cflags_filter "$@")
1022     check_objcc "$@" <<EOF
1023 int x;
1024 EOF
1025 }
1026
1027 check_objcflags(){
1028     log check_cflags "$@"
1029     test_objcflags "$@" && add_objcflags "$@"
1030 }
1031
1032 test_ldflags(){
1033     log test_ldflags "$@"
1034     check_ld "cc" "$@" <<EOF
1035 int main(void){ return 0; }
1036 EOF
1037 }
1038
1039 check_ldflags(){
1040     log check_ldflags "$@"
1041     test_ldflags "$@" && add_ldflags "$@"
1042 }
1043
1044 test_stripflags(){
1045     log test_stripflags "$@"
1046     # call check_cc to get a fresh TMPO
1047     check_cc <<EOF
1048 int main(void) { return 0; }
1049 EOF
1050     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1051 }
1052
1053 check_stripflags(){
1054     log check_stripflags "$@"
1055     test_stripflags "$@" && add_stripflags "$@"
1056 }
1057
1058 check_header(){
1059     log check_header "$@"
1060     header=$1
1061     shift
1062     disable_safe $header
1063     check_cpp "$@" <<EOF && enable_safe $header
1064 #include <$header>
1065 int x;
1066 EOF
1067 }
1068
1069 check_header_objcc(){
1070     log check_header_objcc "$@"
1071     rm -f -- "$TMPO"
1072     header=$1
1073     shift
1074     disable_safe $header
1075     {
1076        echo "#include <$header>"
1077        echo "int main(void) { return 0; }"
1078     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1079 }
1080
1081 check_func(){
1082     log check_func "$@"
1083     func=$1
1084     shift
1085     disable $func
1086     check_ld "cc" "$@" <<EOF && enable $func
1087 extern int $func();
1088 int main(void){ $func(); }
1089 EOF
1090 }
1091
1092 check_complexfunc(){
1093     log check_complexfunc "$@"
1094     func=$1
1095     narg=$2
1096     shift 2
1097     test $narg = 2 && args="f, g" || args="f * I"
1098     disable $func
1099     check_ld "cc" "$@" <<EOF && enable $func
1100 #include <complex.h>
1101 #include <math.h>
1102 float foo(complex float f, complex float g) { return $func($args); }
1103 int main(void){ return (int) foo; }
1104 EOF
1105 }
1106
1107 check_mathfunc(){
1108     log check_mathfunc "$@"
1109     func=$1
1110     narg=$2
1111     shift 2
1112     test $narg = 2 && args="f, g" || args="f"
1113     disable $func
1114     check_ld "cc" "$@" <<EOF && enable $func
1115 #include <math.h>
1116 float foo(float f, float g) { return $func($args); }
1117 int main(void){ return (int) foo; }
1118 EOF
1119 }
1120
1121 check_func_headers(){
1122     log check_func_headers "$@"
1123     headers=$1
1124     funcs=$2
1125     shift 2
1126     {
1127         for hdr in $headers; do
1128             print_include $hdr
1129         done
1130         for func in $funcs; do
1131             echo "long check_$func(void) { return (long) $func; }"
1132         done
1133         echo "int main(void) { return 0; }"
1134     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1135 }
1136
1137 check_class_headers_cpp(){
1138     log check_class_headers_cpp "$@"
1139     headers=$1
1140     classes=$2
1141     shift 2
1142     {
1143         for hdr in $headers; do
1144             echo "#include <$hdr>"
1145         done
1146         echo "int main(void) { "
1147         i=1
1148         for class in $classes; do
1149             echo "$class obj$i;"
1150             i=$(expr $i + 1)
1151         done
1152         echo "return 0; }"
1153     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1154 }
1155
1156 check_cpp_condition(){
1157     log check_cpp_condition "$@"
1158     header=$1
1159     condition=$2
1160     shift 2
1161     check_cpp "$@" <<EOF
1162 #include <$header>
1163 #if !($condition)
1164 #error "unsatisfied condition: $condition"
1165 #endif
1166 EOF
1167 }
1168
1169 check_lib(){
1170     log check_lib "$@"
1171     header="$1"
1172     func="$2"
1173     shift 2
1174     check_header $header && check_func $func "$@" && add_extralibs "$@"
1175 }
1176
1177 check_lib2(){
1178     log check_lib2 "$@"
1179     headers="$1"
1180     funcs="$2"
1181     shift 2
1182     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1183 }
1184
1185 check_lib_cpp(){
1186     log check_lib_cpp "$@"
1187     headers="$1"
1188     classes="$2"
1189     shift 2
1190     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1191 }
1192
1193 check_pkg_config(){
1194     log check_pkg_config "$@"
1195     pkgandversion="$1"
1196     pkg="${1%% *}"
1197     headers="$2"
1198     funcs="$3"
1199     shift 3
1200     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1201     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1202     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1203     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1204         set_safe "${pkg}_cflags" $pkg_cflags   &&
1205         set_safe "${pkg}_libs"   $pkg_libs
1206 }
1207
1208 check_exec(){
1209     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1210 }
1211
1212 check_exec_crash(){
1213     code=$(cat)
1214
1215     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1216     # are safe but may not be available everywhere.  Thus we use
1217     # raise(SIGTERM) instead.  The check is run in a subshell so we
1218     # can redirect the "Terminated" message from the shell.  SIGBUS
1219     # is not defined by standard C so it is used conditionally.
1220
1221     (check_exec "$@") >> $logfile 2>&1 <<EOF
1222 #include <signal.h>
1223 static void sighandler(int sig){
1224     raise(SIGTERM);
1225 }
1226 int foo(void){
1227     $code
1228 }
1229 int (*func_ptr)(void) = foo;
1230 int main(void){
1231     signal(SIGILL, sighandler);
1232     signal(SIGFPE, sighandler);
1233     signal(SIGSEGV, sighandler);
1234 #ifdef SIGBUS
1235     signal(SIGBUS, sighandler);
1236 #endif
1237     return func_ptr();
1238 }
1239 EOF
1240 }
1241
1242 check_type(){
1243     log check_type "$@"
1244     headers=$1
1245     type=$2
1246     shift 2
1247     disable_safe "$type"
1248     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1249 }
1250
1251 check_struct(){
1252     log check_struct "$@"
1253     headers=$1
1254     struct=$2
1255     member=$3
1256     shift 3
1257     disable_safe "${struct}_${member}"
1258     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1259         enable_safe "${struct}_${member}"
1260 }
1261
1262 check_builtin(){
1263     log check_builtin "$@"
1264     name=$1
1265     headers=$2
1266     builtin=$3
1267     shift 3
1268     disable "$name"
1269     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1270 }
1271
1272 check_compile_assert(){
1273     log check_compile_assert "$@"
1274     name=$1
1275     headers=$2
1276     condition=$3
1277     shift 3
1278     disable "$name"
1279     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1280 }
1281
1282 require(){
1283     name="$1"
1284     header="$2"
1285     func="$3"
1286     shift 3
1287     check_lib $header $func "$@" || die "ERROR: $name not found"
1288 }
1289
1290 require2(){
1291     name="$1"
1292     headers="$2"
1293     func="$3"
1294     shift 3
1295     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1296 }
1297
1298 require_cpp(){
1299     name="$1"
1300     headers="$2"
1301     classes="$3"
1302     shift 3
1303     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1304 }
1305
1306 use_pkg_config(){
1307     pkg="$1"
1308     check_pkg_config "$@" || return 1
1309     add_cflags    $(get_safe "${pkg}_cflags")
1310     add_extralibs $(get_safe "${pkg}_libs")
1311 }
1312
1313 require_pkg_config(){
1314     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1315 }
1316
1317 require_libfreetype(){
1318     log require_libfreetype "$@"
1319     pkg="freetype2"
1320     check_cmd $pkg_config --exists --print-errors $pkg \
1321       || die "ERROR: $pkg not found"
1322     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1323     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1324     {
1325         echo "#include <ft2build.h>"
1326         echo "#include FT_FREETYPE_H"
1327         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1328         echo "int main(void) { return 0; }"
1329     } | check_ld "cc" $pkg_cflags $pkg_libs \
1330       && set_safe "${pkg}_cflags" $pkg_cflags \
1331       && set_safe "${pkg}_libs"   $pkg_libs \
1332       || die "ERROR: $pkg not found"
1333     add_cflags    $(get_safe "${pkg}_cflags")
1334     add_extralibs $(get_safe "${pkg}_libs")
1335 }
1336
1337 hostcc_e(){
1338     eval printf '%s\\n' $HOSTCC_E
1339 }
1340
1341 hostcc_o(){
1342     eval printf '%s\\n' $HOSTCC_O
1343 }
1344
1345 check_host_cc(){
1346     log check_host_cc "$@"
1347     cat > $TMPC
1348     log_file $TMPC
1349     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1350 }
1351
1352 check_host_cpp(){
1353     log check_host_cpp "$@"
1354     cat > $TMPC
1355     log_file $TMPC
1356     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1357 }
1358
1359 check_host_cppflags(){
1360     log check_host_cppflags "$@"
1361     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1362 int x;
1363 EOF
1364 }
1365
1366 check_host_cflags(){
1367     log check_host_cflags "$@"
1368     set -- $($host_cflags_filter "$@")
1369     check_host_cc "$@" <<EOF && append host_cflags "$@"
1370 int x;
1371 EOF
1372 }
1373
1374 check_host_cpp_condition(){
1375     log check_host_cpp_condition "$@"
1376     header=$1
1377     condition=$2
1378     shift 2
1379     check_host_cpp "$@" <<EOF
1380 #include <$header>
1381 #if !($condition)
1382 #error "unsatisfied condition: $condition"
1383 #endif
1384 EOF
1385 }
1386
1387 cp_if_changed(){
1388     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1389     mkdir -p "$(dirname $2)"
1390     $cp_f "$1" "$2"
1391 }
1392
1393 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1394 # system-dependent things.
1395
1396 AVCODEC_COMPONENTS="
1397     bsfs
1398     decoders
1399     encoders
1400     hwaccels
1401     parsers
1402 "
1403
1404 AVDEVICE_COMPONENTS="
1405     indevs
1406     outdevs
1407 "
1408 AVFILTER_COMPONENTS="
1409     filters
1410 "
1411 AVFORMAT_COMPONENTS="
1412     demuxers
1413     muxers
1414     protocols
1415 "
1416
1417 AVRESAMPLE_COMPONENTS=""
1418 AVUTIL_COMPONENTS=""
1419
1420 COMPONENT_LIST="
1421     $AVCODEC_COMPONENTS
1422     $AVDEVICE_COMPONENTS
1423     $AVFILTER_COMPONENTS
1424     $AVFORMAT_COMPONENTS
1425     $AVRESAMPLE_COMPONENTS
1426     $AVUTIL_COMPONENTS
1427 "
1428
1429 EXAMPLE_LIST="
1430     avio_reading_example
1431     avio_dir_cmd_example
1432     decoding_encoding_example
1433     demuxing_decoding_example
1434     extract_mvs_example
1435     filter_audio_example
1436     filtering_audio_example
1437     filtering_video_example
1438     metadata_example
1439     muxing_example
1440     qsvdec_example
1441     remuxing_example
1442     resampling_audio_example
1443     scaling_video_example
1444     transcode_aac_example
1445     transcoding_example
1446 "
1447
1448 EXTERNAL_LIBRARY_LIST="
1449     avisynth
1450     bzlib
1451     chromaprint
1452     crystalhd
1453     cuda
1454     decklink
1455     frei0r
1456     gcrypt
1457     gmp
1458     gnutls
1459     iconv
1460     jni
1461     ladspa
1462     libass
1463     libbluray
1464     libbs2b
1465     libcaca
1466     libcdio
1467     libcelt
1468     libdc1394
1469     libdcadec
1470     libfaac
1471     libfdk_aac
1472     libflite
1473     libfontconfig
1474     libfreetype
1475     libfribidi
1476     libgme
1477     libgsm
1478     libiec61883
1479     libilbc
1480     libkvazaar
1481     libmfx
1482     libmodplug
1483     libmp3lame
1484     libnut
1485     libopencore_amrnb
1486     libopencore_amrwb
1487     libopencv
1488     libopenh264
1489     libopenjpeg
1490     libopus
1491     libpulse
1492     librtmp
1493     librubberband
1494     libschroedinger
1495     libshine
1496     libsmbclient
1497     libsnappy
1498     libsoxr
1499     libspeex
1500     libssh
1501     libtesseract
1502     libtheora
1503     libtwolame
1504     libutvideo
1505     libv4l2
1506     libvidstab
1507     libvo_amrwbenc
1508     libvorbis
1509     libvpx
1510     libwavpack
1511     libwebp
1512     libx264
1513     libx265
1514     libxavs
1515     libxcb
1516     libxcb_shm
1517     libxcb_shape
1518     libxcb_xfixes
1519     libxvid
1520     libzimg
1521     libzmq
1522     libzvbi
1523     lzma
1524     mediacodec
1525     mmal
1526     netcdf
1527     nvenc
1528     openal
1529     opencl
1530     opengl
1531     openssl
1532     schannel
1533     sdl
1534     securetransport
1535     videotoolbox
1536     x11grab
1537     xlib
1538     zlib
1539 "
1540
1541 DOCUMENT_LIST="
1542     doc
1543     htmlpages
1544     manpages
1545     podpages
1546     txtpages
1547 "
1548
1549 FEATURE_LIST="
1550     ftrapv
1551     gray
1552     hardcoded_tables
1553     runtime_cpudetect
1554     safe_bitstream_reader
1555     shared
1556     small
1557     static
1558     swscale_alpha
1559 "
1560
1561 HWACCEL_LIST="
1562     d3d11va
1563     dxva2
1564     vaapi
1565     vda
1566     vdpau
1567     videotoolbox_hwaccel
1568     xvmc
1569 "
1570
1571 LIBRARY_LIST="
1572     avcodec
1573     avdevice
1574     avfilter
1575     avformat
1576     avresample
1577     avutil
1578     postproc
1579     swresample
1580     swscale
1581 "
1582
1583 LICENSE_LIST="
1584     gpl
1585     nonfree
1586     version3
1587 "
1588
1589 PROGRAM_LIST="
1590     ffplay
1591     ffprobe
1592     ffserver
1593     ffmpeg
1594 "
1595
1596 SUBSYSTEM_LIST="
1597     dct
1598     dwt
1599     error_resilience
1600     faan
1601     fast_unaligned
1602     fft
1603     lsp
1604     lzo
1605     mdct
1606     pixelutils
1607     network
1608     rdft
1609 "
1610
1611 CONFIG_LIST="
1612     $COMPONENT_LIST
1613     $DOCUMENT_LIST
1614     $EXAMPLE_LIST
1615     $EXTERNAL_LIBRARY_LIST
1616     $FEATURE_LIST
1617     $HWACCEL_LIST
1618     $LICENSE_LIST
1619     $LIBRARY_LIST
1620     $PROGRAM_LIST
1621     $SUBSYSTEM_LIST
1622     fontconfig
1623     incompatible_libav_abi
1624     memalign_hack
1625     memory_poisoning
1626     neon_clobber_test
1627     pic
1628     pod2man
1629     raise_major
1630     thumb
1631     valgrind_backtrace
1632     xmm_clobber_test
1633 "
1634
1635 THREADS_LIST="
1636     pthreads
1637     os2threads
1638     w32threads
1639 "
1640
1641 ATOMICS_LIST="
1642     atomics_gcc
1643     atomics_suncc
1644     atomics_win32
1645 "
1646
1647 ARCH_LIST="
1648     aarch64
1649     alpha
1650     arm
1651     avr32
1652     avr32_ap
1653     avr32_uc
1654     bfin
1655     ia64
1656     m68k
1657     mips
1658     mips64
1659     parisc
1660     ppc
1661     ppc64
1662     s390
1663     sh4
1664     sparc
1665     sparc64
1666     tilegx
1667     tilepro
1668     tomi
1669     x86
1670     x86_32
1671     x86_64
1672 "
1673
1674 ARCH_EXT_LIST_ARM="
1675     armv5te
1676     armv6
1677     armv6t2
1678     armv8
1679     neon
1680     vfp
1681     vfpv3
1682     setend
1683 "
1684
1685 ARCH_EXT_LIST_MIPS="
1686     mipsfpu
1687     mips32r2
1688     mips32r5
1689     mips64r2
1690     mips32r6
1691     mips64r6
1692     mipsdsp
1693     mipsdspr2
1694     msa
1695 "
1696
1697 ARCH_EXT_LIST_LOONGSON="
1698     loongson2
1699     loongson3
1700     mmi
1701 "
1702
1703 ARCH_EXT_LIST_X86_SIMD="
1704     aesni
1705     amd3dnow
1706     amd3dnowext
1707     avx
1708     avx2
1709     fma3
1710     fma4
1711     mmx
1712     mmxext
1713     sse
1714     sse2
1715     sse3
1716     sse4
1717     sse42
1718     ssse3
1719     xop
1720 "
1721
1722 ARCH_EXT_LIST_PPC="
1723     altivec
1724     dcbzl
1725     ldbrx
1726     power8
1727     ppc4xx
1728     vsx
1729 "
1730
1731 ARCH_EXT_LIST_X86="
1732     $ARCH_EXT_LIST_X86_SIMD
1733     cpunop
1734     i686
1735 "
1736
1737 ARCH_EXT_LIST="
1738     $ARCH_EXT_LIST_ARM
1739     $ARCH_EXT_LIST_PPC
1740     $ARCH_EXT_LIST_X86
1741     $ARCH_EXT_LIST_MIPS
1742     $ARCH_EXT_LIST_LOONGSON
1743 "
1744
1745 ARCH_FEATURES="
1746     aligned_stack
1747     fast_64bit
1748     fast_clz
1749     fast_cmov
1750     local_aligned_8
1751     local_aligned_16
1752     local_aligned_32
1753     simd_align_16
1754 "
1755
1756 BUILTIN_LIST="
1757     atomic_cas_ptr
1758     atomic_compare_exchange
1759     machine_rw_barrier
1760     MemoryBarrier
1761     mm_empty
1762     rdtsc
1763     sarestart
1764     sem_timedwait
1765     sync_val_compare_and_swap
1766 "
1767 HAVE_LIST_CMDLINE="
1768     inline_asm
1769     symver
1770     yasm
1771 "
1772
1773 HAVE_LIST_PUB="
1774     bigendian
1775     fast_unaligned
1776     incompatible_libav_abi
1777 "
1778
1779 HEADERS_LIST="
1780     alsa_asoundlib_h
1781     altivec_h
1782     arpa_inet_h
1783     asm_types_h
1784     cdio_paranoia_h
1785     cdio_paranoia_paranoia_h
1786     dispatch_dispatch_h
1787     dev_bktr_ioctl_bt848_h
1788     dev_bktr_ioctl_meteor_h
1789     dev_ic_bt8xx_h
1790     dev_video_bktr_ioctl_bt848_h
1791     dev_video_meteor_ioctl_meteor_h
1792     direct_h
1793     dirent_h
1794     dlfcn_h
1795     d3d11_h
1796     dxva_h
1797     ES2_gl_h
1798     gsm_h
1799     io_h
1800     mach_mach_time_h
1801     machine_ioctl_bt848_h
1802     machine_ioctl_meteor_h
1803     malloc_h
1804     opencv2_core_core_c_h
1805     openjpeg_2_1_openjpeg_h
1806     openjpeg_2_0_openjpeg_h
1807     openjpeg_1_5_openjpeg_h
1808     OpenGL_gl3_h
1809     poll_h
1810     sndio_h
1811     soundcard_h
1812     sys_mman_h
1813     sys_param_h
1814     sys_resource_h
1815     sys_select_h
1816     sys_soundcard_h
1817     sys_time_h
1818     sys_un_h
1819     sys_videoio_h
1820     termios_h
1821     udplite_h
1822     unistd_h
1823     valgrind_valgrind_h
1824     windows_h
1825     winsock2_h
1826 "
1827
1828 INTRINSICS_LIST="
1829     intrinsics_neon
1830 "
1831
1832 COMPLEX_FUNCS="
1833     cabs
1834     cexp
1835 "
1836
1837 MATH_FUNCS="
1838     atanf
1839     atan2f
1840     cbrt
1841     cbrtf
1842     copysign
1843     cosf
1844     erf
1845     exp2
1846     exp2f
1847     expf
1848     hypot
1849     isfinite
1850     isinf
1851     isnan
1852     ldexpf
1853     llrint
1854     llrintf
1855     log2
1856     log2f
1857     log10f
1858     lrint
1859     lrintf
1860     powf
1861     rint
1862     round
1863     roundf
1864     sinf
1865     trunc
1866     truncf
1867 "
1868
1869 SYSTEM_FUNCS="
1870     access
1871     aligned_malloc
1872     arc4random
1873     clock_gettime
1874     closesocket
1875     CommandLineToArgvW
1876     CoTaskMemFree
1877     CryptGenRandom
1878     dlopen
1879     fcntl
1880     flt_lim
1881     fork
1882     getaddrinfo
1883     gethrtime
1884     getopt
1885     GetProcessAffinityMask
1886     GetProcessMemoryInfo
1887     GetProcessTimes
1888     getrusage
1889     GetSystemTimeAsFileTime
1890     gettimeofday
1891     glob
1892     glXGetProcAddress
1893     gmtime_r
1894     inet_aton
1895     isatty
1896     jack_port_get_latency_range
1897     kbhit
1898     localtime_r
1899     lstat
1900     lzo1x_999_compress
1901     mach_absolute_time
1902     MapViewOfFile
1903     memalign
1904     mkstemp
1905     mmap
1906     mprotect
1907     nanosleep
1908     PeekNamedPipe
1909     posix_memalign
1910     pthread_cancel
1911     sched_getaffinity
1912     SetConsoleTextAttribute
1913     SetConsoleCtrlHandler
1914     setmode
1915     setrlimit
1916     Sleep
1917     strerror_r
1918     sysconf
1919     sysctl
1920     usleep
1921     UTGetOSTypeFromString
1922     VirtualAlloc
1923     wglGetProcAddress
1924 "
1925
1926 TOOLCHAIN_FEATURES="
1927     as_dn_directive
1928     as_func
1929     as_object_arch
1930     asm_mod_q
1931     attribute_may_alias
1932     attribute_packed
1933     ebp_available
1934     ebx_available
1935     gnu_as
1936     gnu_windres
1937     ibm_asm
1938     inline_asm_direct_symbol_refs
1939     inline_asm_labels
1940     inline_asm_nonlocal_labels
1941     pragma_deprecated
1942     rsync_contimeout
1943     symver_asm_label
1944     symver_gnu_asm
1945     vfp_args
1946     xform_asm
1947     xmm_clobbers
1948 "
1949
1950 TYPES_LIST="
1951     CONDITION_VARIABLE_Ptr
1952     socklen_t
1953     struct_addrinfo
1954     struct_group_source_req
1955     struct_ip_mreq_source
1956     struct_ipv6_mreq
1957     struct_msghdr_msg_flags
1958     struct_pollfd
1959     struct_rusage_ru_maxrss
1960     struct_sctp_event_subscribe
1961     struct_sockaddr_in6
1962     struct_sockaddr_sa_len
1963     struct_sockaddr_storage
1964     struct_stat_st_mtim_tv_nsec
1965     struct_v4l2_frmivalenum_discrete
1966 "
1967
1968 HAVE_LIST="
1969     $ARCH_EXT_LIST
1970     $(add_suffix _external $ARCH_EXT_LIST)
1971     $(add_suffix _inline   $ARCH_EXT_LIST)
1972     $ARCH_FEATURES
1973     $ATOMICS_LIST
1974     $BUILTIN_LIST
1975     $COMPLEX_FUNCS
1976     $HAVE_LIST_CMDLINE
1977     $HAVE_LIST_PUB
1978     $HEADERS_LIST
1979     $INTRINSICS_LIST
1980     $MATH_FUNCS
1981     $SYSTEM_FUNCS
1982     $THREADS_LIST
1983     $TOOLCHAIN_FEATURES
1984     $TYPES_LIST
1985     atomics_native
1986     dos_paths
1987     dxva2_lib
1988     dxva2api_cobj
1989     libc_msvcrt
1990     libdc1394_1
1991     libdc1394_2
1992     makeinfo
1993     makeinfo_html
1994     perl
1995     pod2man
1996     sdl
1997     section_data_rel_ro
1998     texi2html
1999     threads
2000     vaapi_x11
2001     vdpau_x11
2002     winrt
2003     xlib
2004 "
2005
2006 # options emitted with CONFIG_ prefix but not available on the command line
2007 CONFIG_EXTRA="
2008     aandcttables
2009     ac3dsp
2010     audio_frame_queue
2011     audiodsp
2012     blockdsp
2013     bswapdsp
2014     cabac
2015     dirac_parse
2016     dvprofile
2017     exif
2018     faandct
2019     faanidct
2020     fdctdsp
2021     flacdsp
2022     fmtconvert
2023     frame_thread_encoder
2024     g722dsp
2025     golomb
2026     gplv3
2027     h263dsp
2028     h264chroma
2029     h264dsp
2030     h264pred
2031     h264qpel
2032     hpeldsp
2033     huffman
2034     huffyuvdsp
2035     huffyuvencdsp
2036     idctdsp
2037     iirfilter
2038     imdct15
2039     intrax8
2040     iso_media
2041     ividsp
2042     jpegtables
2043     lgplv3
2044     libx262
2045     llauddsp
2046     llviddsp
2047     lpc
2048     lzf
2049     me_cmp
2050     mpeg_er
2051     mpegaudio
2052     mpegaudiodsp
2053     mpegvideo
2054     mpegvideoenc
2055     mss34dsp
2056     pixblockdsp
2057     qpeldsp
2058     qsv
2059     qsvdec
2060     qsvenc
2061     rangecoder
2062     riffdec
2063     riffenc
2064     rtpdec
2065     rtpenc_chain
2066     rv34dsp
2067     sinewin
2068     snappy
2069     startcode
2070     texturedsp
2071     texturedspenc
2072     tpeldsp
2073     vc1dsp
2074     videodsp
2075     vp3dsp
2076     vp56dsp
2077     vp8dsp
2078     wma_freqs
2079     wmv2dsp
2080 "
2081
2082 CMDLINE_SELECT="
2083     $ARCH_EXT_LIST
2084     $CONFIG_LIST
2085     $HAVE_LIST_CMDLINE
2086     $THREADS_LIST
2087     asm
2088     cross_compile
2089     debug
2090     extra_warnings
2091     logging
2092     lto
2093     optimizations
2094     rpath
2095     stripping
2096 "
2097
2098 PATHS_LIST="
2099     bindir
2100     datadir
2101     docdir
2102     incdir
2103     libdir
2104     mandir
2105     pkgconfigdir
2106     prefix
2107     shlibdir
2108     install_name_dir
2109 "
2110
2111 CMDLINE_SET="
2112     $PATHS_LIST
2113     ar
2114     arch
2115     as
2116     assert_level
2117     build_suffix
2118     cc
2119     objcc
2120     cpu
2121     cross_prefix
2122     custom_allocator
2123     cxx
2124     dep_cc
2125     doxygen
2126     env
2127     extra_version
2128     gas
2129     host_cc
2130     host_cflags
2131     host_ld
2132     host_ldflags
2133     host_libs
2134     host_os
2135     install
2136     ld
2137     logfile
2138     malloc_prefix
2139     nm
2140     optflags
2141     pkg_config
2142     pkg_config_flags
2143     progs_suffix
2144     random_seed
2145     ranlib
2146     samples
2147     strip
2148     sws_max_filter_size
2149     sysinclude
2150     sysroot
2151     target_exec
2152     target_os
2153     target_path
2154     target_samples
2155     tempprefix
2156     toolchain
2157     valgrind
2158     yasmexe
2159 "
2160
2161 CMDLINE_APPEND="
2162     extra_cflags
2163     extra_cxxflags
2164     extra_objcflags
2165     host_cppflags
2166 "
2167
2168 # code dependency declarations
2169
2170 # architecture extensions
2171
2172 armv5te_deps="arm"
2173 armv6_deps="arm"
2174 armv6t2_deps="arm"
2175 armv8_deps="aarch64"
2176 neon_deps_any="aarch64 arm"
2177 intrinsics_neon_deps="neon"
2178 vfp_deps_any="aarch64 arm"
2179 vfpv3_deps="vfp"
2180 setend_deps="arm"
2181
2182 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2183
2184 mipsfpu_deps="mips"
2185 mipsdsp_deps="mips"
2186 mipsdspr2_deps="mips"
2187 mips32r2_deps="mips"
2188 mips32r5_deps="mips"
2189 mips32r6_deps="mips"
2190 mips64r2_deps="mips"
2191 mips64r6_deps="mips"
2192 msa_deps="mipsfpu"
2193 mmi_deps="mips"
2194
2195 altivec_deps="ppc"
2196 dcbzl_deps="ppc"
2197 ldbrx_deps="ppc"
2198 ppc4xx_deps="ppc"
2199 vsx_deps="altivec"
2200 power8_deps="vsx"
2201
2202 cpunop_deps="i686"
2203 x86_64_select="i686"
2204 x86_64_suggest="fast_cmov"
2205
2206 amd3dnow_deps="mmx"
2207 amd3dnowext_deps="amd3dnow"
2208 i686_deps="x86"
2209 mmx_deps="x86"
2210 mmxext_deps="mmx"
2211 sse_deps="mmxext"
2212 sse2_deps="sse"
2213 sse3_deps="sse2"
2214 ssse3_deps="sse3"
2215 sse4_deps="ssse3"
2216 sse42_deps="sse4"
2217 aesni_deps="sse42"
2218 avx_deps="sse42"
2219 xop_deps="avx"
2220 fma3_deps="avx"
2221 fma4_deps="avx"
2222 avx2_deps="avx"
2223
2224 mmx_external_deps="yasm"
2225 mmx_inline_deps="inline_asm"
2226 mmx_suggest="mmx_external mmx_inline"
2227
2228 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2229     eval dep=\$${ext}_deps
2230     eval ${ext}_external_deps='"${dep}_external"'
2231     eval ${ext}_inline_deps='"${dep}_inline"'
2232     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2233 done
2234
2235 aligned_stack_if_any="aarch64 ppc x86"
2236 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2237 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2238 fast_unaligned_if_any="aarch64 ppc x86"
2239 simd_align_16_if_any="altivec neon sse"
2240
2241 # system capabilities
2242 symver_if_any="symver_asm_label symver_gnu_asm"
2243 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2244
2245 # threading support
2246 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2247 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2248 atomics_win32_if="MemoryBarrier"
2249 atomics_native_if_any="$ATOMICS_LIST"
2250 w32threads_deps="atomics_native"
2251 threads_if_any="$THREADS_LIST"
2252
2253 # subsystems
2254 dct_select="rdft"
2255 dirac_parse_select="golomb"
2256 error_resilience_select="me_cmp"
2257 faandct_deps="faan fdctdsp"
2258 faanidct_deps="faan idctdsp"
2259 h264dsp_select="startcode"
2260 frame_thread_encoder_deps="encoders threads"
2261 intrax8_select="error_resilience"
2262 mdct_select="fft"
2263 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2264 mpeg_er_select="error_resilience"
2265 mpegaudio_select="mpegaudiodsp"
2266 mpegaudiodsp_select="dct"
2267 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2268 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2269 qsvdec_select="qsv"
2270 qsvenc_select="qsv"
2271 vc1dsp_select="h264chroma qpeldsp startcode"
2272 rdft_select="fft"
2273
2274 # decoders / encoders
2275 aac_decoder_select="imdct15 mdct sinewin"
2276 aac_fixed_decoder_select="mdct sinewin"
2277 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2278 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2279 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2280 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2281 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2282 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2283 adpcm_g722_decoder_select="g722dsp"
2284 adpcm_g722_encoder_select="g722dsp"
2285 aic_decoder_select="golomb idctdsp"
2286 alac_encoder_select="lpc"
2287 als_decoder_select="bswapdsp"
2288 amrnb_decoder_select="lsp"
2289 amrwb_decoder_select="lsp"
2290 amv_decoder_select="sp5x_decoder exif"
2291 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2292 ape_decoder_select="bswapdsp llauddsp"
2293 apng_decoder_select="zlib"
2294 apng_encoder_select="huffyuvencdsp zlib"
2295 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2296 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2297 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2298 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2299 atrac1_decoder_select="mdct sinewin"
2300 atrac3_decoder_select="mdct"
2301 atrac3p_decoder_select="mdct sinewin"
2302 avrn_decoder_select="exif jpegtables"
2303 bink_decoder_select="blockdsp hpeldsp"
2304 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2305 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2306 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2307 cllc_decoder_select="bswapdsp"
2308 comfortnoise_encoder_select="lpc"
2309 cook_decoder_select="audiodsp mdct sinewin"
2310 cscd_decoder_select="lzo"
2311 cscd_decoder_suggest="zlib"
2312 dca_decoder_select="mdct"
2313 dds_decoder_select="texturedsp"
2314 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2315 dnxhd_decoder_select="blockdsp idctdsp"
2316 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2317 dvvideo_decoder_select="dvprofile idctdsp"
2318 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2319 dxa_decoder_select="zlib"
2320 dxv_decoder_select="lzf texturedsp"
2321 eac3_decoder_select="ac3_decoder"
2322 eac3_encoder_select="ac3_encoder"
2323 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2324 eatgq_decoder_select="aandcttables"
2325 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2326 exr_decoder_select="zlib"
2327 ffv1_decoder_select="golomb rangecoder"
2328 ffv1_encoder_select="rangecoder"
2329 ffvhuff_decoder_select="huffyuv_decoder"
2330 ffvhuff_encoder_select="huffyuv_encoder"
2331 fic_decoder_select="golomb"
2332 flac_decoder_select="flacdsp golomb"
2333 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2334 flashsv2_decoder_select="zlib"
2335 flashsv2_encoder_select="zlib"
2336 flashsv_decoder_select="zlib"
2337 flashsv_encoder_select="zlib"
2338 flv_decoder_select="h263_decoder"
2339 flv_encoder_select="h263_encoder"
2340 fourxm_decoder_select="blockdsp bswapdsp"
2341 fraps_decoder_select="bswapdsp huffman"
2342 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2343 g729_decoder_select="audiodsp"
2344 h261_decoder_select="mpegvideo"
2345 h261_encoder_select="aandcttables mpegvideoenc"
2346 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2347 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2348 h263i_decoder_select="h263_decoder"
2349 h263p_decoder_select="h263_decoder"
2350 h263p_encoder_select="h263_encoder"
2351 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2352 h264_decoder_suggest="error_resilience"
2353 h264_qsv_decoder_deps="libmfx"
2354 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2355 h264_qsv_encoder_deps="libmfx"
2356 h264_qsv_encoder_select="qsvenc"
2357 hap_decoder_select="snappy texturedsp"
2358 hap_encoder_deps="libsnappy"
2359 hap_encoder_select="texturedspenc"
2360 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2361 hevc_qsv_decoder_deps="libmfx"
2362 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2363 hevc_qsv_encoder_deps="libmfx"
2364 hevc_qsv_encoder_select="qsvenc"
2365 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2366 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2367 iac_decoder_select="imc_decoder"
2368 imc_decoder_select="bswapdsp fft mdct sinewin"
2369 indeo3_decoder_select="hpeldsp"
2370 indeo4_decoder_select="ividsp"
2371 indeo5_decoder_select="ividsp"
2372 interplay_video_decoder_select="hpeldsp"
2373 jpegls_decoder_select="golomb mjpeg_decoder"
2374 jpegls_encoder_select="golomb"
2375 jv_decoder_select="blockdsp"
2376 lagarith_decoder_select="huffyuvdsp"
2377 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2378 loco_decoder_select="golomb"
2379 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2380 metasound_decoder_select="lsp mdct sinewin"
2381 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2382 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2383 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2384 mjpegb_decoder_select="mjpeg_decoder"
2385 mlp_decoder_select="mlp_parser"
2386 motionpixels_decoder_select="bswapdsp"
2387 mp1_decoder_select="mpegaudio"
2388 mp1float_decoder_select="mpegaudio"
2389 mp2_decoder_select="mpegaudio"
2390 mp2float_decoder_select="mpegaudio"
2391 mp3_decoder_select="mpegaudio"
2392 mp3adu_decoder_select="mpegaudio"
2393 mp3adufloat_decoder_select="mpegaudio"
2394 mp3float_decoder_select="mpegaudio"
2395 mp3on4_decoder_select="mpegaudio"
2396 mp3on4float_decoder_select="mpegaudio"
2397 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2398 mpc8_decoder_select="mpegaudiodsp"
2399 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2400 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2401 mpegvideo_decoder_select="mpegvideo"
2402 mpeg1video_decoder_select="mpegvideo"
2403 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2404 mpeg2video_decoder_select="mpegvideo"
2405 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2406 mpeg2_qsv_decoder_deps="libmfx"
2407 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2408 mpeg2_qsv_encoder_deps="libmfx"
2409 mpeg2_qsv_encoder_select="qsvenc"
2410 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2411 mpeg4_encoder_select="h263_encoder"
2412 msa1_decoder_select="mss34dsp"
2413 msmpeg4v1_decoder_select="h263_decoder"
2414 msmpeg4v2_decoder_select="h263_decoder"
2415 msmpeg4v2_encoder_select="h263_encoder"
2416 msmpeg4v3_decoder_select="h263_decoder"
2417 msmpeg4v3_encoder_select="h263_encoder"
2418 mss2_decoder_select="vc1_decoder mpegvideo"
2419 mts2_decoder_select="mss34dsp"
2420 mxpeg_decoder_select="mjpeg_decoder"
2421 nellymoser_decoder_select="mdct sinewin"
2422 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2423 nuv_decoder_select="idctdsp lzo"
2424 on2avc_decoder_select="mdct"
2425 opus_decoder_deps="swresample"
2426 opus_decoder_select="imdct15"
2427 png_decoder_select="zlib"
2428 png_encoder_select="huffyuvencdsp zlib"
2429 prores_decoder_select="blockdsp idctdsp"
2430 prores_encoder_select="fdctdsp"
2431 qcelp_decoder_select="lsp"
2432 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2433 ra_144_decoder_select="audiodsp"
2434 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2435 ralf_decoder_select="golomb"
2436 rawvideo_decoder_select="bswapdsp"
2437 rscc_decoder_select="zlib"
2438 rtjpeg_decoder_select="me_cmp"
2439 rv10_decoder_select="h263_decoder"
2440 rv10_encoder_select="h263_encoder"
2441 rv20_decoder_select="h263_decoder"
2442 rv20_encoder_select="h263_encoder"
2443 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2444 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2445 screenpresso_decoder_select="zlib"
2446 shorten_decoder_select="golomb"
2447 sipr_decoder_select="lsp"
2448 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2449 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2450 sonic_decoder_select="golomb rangecoder"
2451 sonic_encoder_select="golomb rangecoder"
2452 sonic_ls_encoder_select="golomb rangecoder"
2453 sp5x_decoder_select="mjpeg_decoder"
2454 svq1_decoder_select="hpeldsp"
2455 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2456 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2457 svq3_decoder_suggest="zlib"
2458 tak_decoder_select="audiodsp"
2459 tdsc_decoder_select="zlib mjpeg_decoder"
2460 theora_decoder_select="vp3_decoder"
2461 thp_decoder_select="mjpeg_decoder"
2462 tiff_decoder_suggest="zlib lzma"
2463 tiff_encoder_suggest="zlib"
2464 truehd_decoder_select="mlp_parser"
2465 truemotion2_decoder_select="bswapdsp"
2466 truespeech_decoder_select="bswapdsp"
2467 tscc_decoder_select="zlib"
2468 twinvq_decoder_select="mdct lsp sinewin"
2469 txd_decoder_select="texturedsp"
2470 utvideo_decoder_select="bswapdsp"
2471 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2472 vble_decoder_select="huffyuvdsp"
2473 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2474 vc1_qsv_decoder_deps="libmfx"
2475 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2476 vc1image_decoder_select="vc1_decoder"
2477 vorbis_decoder_select="mdct"
2478 vorbis_encoder_select="mdct"
2479 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2480 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2481 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2482 vp6a_decoder_select="vp6_decoder"
2483 vp6f_decoder_select="vp6_decoder"
2484 vp7_decoder_select="h264pred videodsp vp8dsp"
2485 vp8_decoder_select="h264pred videodsp vp8dsp"
2486 vp9_decoder_select="videodsp vp9_parser"
2487 webp_decoder_select="vp8_decoder exif"
2488 wmalossless_decoder_select="llauddsp"
2489 wmapro_decoder_select="mdct sinewin wma_freqs"
2490 wmav1_decoder_select="mdct sinewin wma_freqs"
2491 wmav1_encoder_select="mdct sinewin wma_freqs"
2492 wmav2_decoder_select="mdct sinewin wma_freqs"
2493 wmav2_encoder_select="mdct sinewin wma_freqs"
2494 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2495 wmv1_decoder_select="h263_decoder"
2496 wmv1_encoder_select="h263_encoder"
2497 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2498 wmv2_encoder_select="h263_encoder wmv2dsp"
2499 wmv3_decoder_select="vc1_decoder"
2500 wmv3image_decoder_select="wmv3_decoder"
2501 xma1_decoder_select="wmapro_decoder"
2502 xma2_decoder_select="wmapro_decoder"
2503 zerocodec_decoder_select="zlib"
2504 zlib_decoder_select="zlib"
2505 zlib_encoder_select="zlib"
2506 zmbv_decoder_select="zlib"
2507 zmbv_encoder_select="zlib"
2508
2509 # hardware accelerators
2510 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2511 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2512 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2513 vaapi_deps="va_va_h"
2514 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2515 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2516 vda_deps="vda_framework pthreads"
2517 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2518 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2519 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2520 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2521 xvmc_deps="X11_extensions_XvMClib_h"
2522
2523 h263_vaapi_hwaccel_deps="vaapi"
2524 h263_vaapi_hwaccel_select="h263_decoder"
2525 h263_videotoolbox_hwaccel_deps="videotoolbox"
2526 h263_videotoolbox_hwaccel_select="h263_decoder"
2527 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2528 h264_d3d11va_hwaccel_deps="d3d11va"
2529 h264_d3d11va_hwaccel_select="h264_decoder"
2530 h264_dxva2_hwaccel_deps="dxva2"
2531 h264_dxva2_hwaccel_select="h264_decoder"
2532 h264_mediacodec_decoder_deps="mediacodec"
2533 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2534 h264_mmal_decoder_deps="mmal"
2535 h264_mmal_decoder_select="mmal"
2536 h264_mmal_hwaccel_deps="mmal"
2537 h264_qsv_hwaccel_deps="libmfx"
2538 h264_vaapi_hwaccel_deps="vaapi"
2539 h264_vaapi_hwaccel_select="h264_decoder"
2540 h264_vda_decoder_deps="vda"
2541 h264_vda_decoder_select="h264_decoder"
2542 h264_vda_hwaccel_deps="vda"
2543 h264_vda_hwaccel_select="h264_decoder"
2544 h264_vda_old_hwaccel_deps="vda"
2545 h264_vda_old_hwaccel_select="h264_decoder"
2546 h264_vdpau_decoder_deps="vdpau"
2547 h264_vdpau_decoder_select="h264_decoder"
2548 h264_vdpau_hwaccel_deps="vdpau"
2549 h264_vdpau_hwaccel_select="h264_decoder"
2550 h264_videotoolbox_hwaccel_deps="videotoolbox"
2551 h264_videotoolbox_hwaccel_select="h264_decoder"
2552 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2553 hevc_d3d11va_hwaccel_select="hevc_decoder"
2554 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2555 hevc_dxva2_hwaccel_select="hevc_decoder"
2556 hevc_qsv_hwaccel_deps="libmfx"
2557 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2558 hevc_vaapi_hwaccel_select="hevc_decoder"
2559 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2560 hevc_vdpau_hwaccel_select="hevc_decoder"
2561 mpeg_vdpau_decoder_deps="vdpau"
2562 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2563 mpeg_xvmc_hwaccel_deps="xvmc"
2564 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2565 mpeg1_vdpau_decoder_deps="vdpau"
2566 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2567 mpeg1_vdpau_hwaccel_deps="vdpau"
2568 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2569 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2570 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2571 mpeg1_xvmc_hwaccel_deps="xvmc"
2572 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2573 mpeg2_crystalhd_decoder_select="crystalhd"
2574 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2575 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2576 mpeg2_dxva2_hwaccel_deps="dxva2"
2577 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2578 mpeg2_mmal_decoder_deps="mmal"
2579 mpeg2_mmal_decoder_select="mmal"
2580 mpeg2_mmal_hwaccel_deps="mmal"
2581 mpeg2_qsv_hwaccel_deps="libmfx"
2582 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2583 mpeg2_vaapi_hwaccel_deps="vaapi"
2584 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2585 mpeg2_vdpau_hwaccel_deps="vdpau"
2586 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2587 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2588 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2589 mpeg2_xvmc_hwaccel_deps="xvmc"
2590 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2591 mpeg4_crystalhd_decoder_select="crystalhd"
2592 mpeg4_mmal_decoder_deps="mmal"
2593 mpeg4_mmal_decoder_select="mmal"
2594 mpeg4_mmal_hwaccel_deps="mmal"
2595 mpeg4_vaapi_hwaccel_deps="vaapi"
2596 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2597 mpeg4_vdpau_decoder_deps="vdpau"
2598 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2599 mpeg4_vdpau_hwaccel_deps="vdpau"
2600 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2601 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2602 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2603 msmpeg4_crystalhd_decoder_select="crystalhd"
2604 vc1_crystalhd_decoder_select="crystalhd"
2605 vc1_d3d11va_hwaccel_deps="d3d11va"
2606 vc1_d3d11va_hwaccel_select="vc1_decoder"
2607 vc1_dxva2_hwaccel_deps="dxva2"
2608 vc1_dxva2_hwaccel_select="vc1_decoder"
2609 vc1_mmal_decoder_deps="mmal"
2610 vc1_mmal_decoder_select="mmal"
2611 vc1_mmal_hwaccel_deps="mmal"
2612 vc1_qsv_hwaccel_deps="libmfx"
2613 vc1_qsv_hwaccel_select="qsvdec_vc1"
2614 vc1_vaapi_hwaccel_deps="vaapi"
2615 vc1_vaapi_hwaccel_select="vc1_decoder"
2616 vc1_vdpau_decoder_deps="vdpau"
2617 vc1_vdpau_decoder_select="vc1_decoder"
2618 vc1_vdpau_hwaccel_deps="vdpau"
2619 vc1_vdpau_hwaccel_select="vc1_decoder"
2620 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2621 vp9_d3d11va_hwaccel_select="vp9_decoder"
2622 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2623 vp9_dxva2_hwaccel_select="vp9_decoder"
2624 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9"
2625 vp9_vaapi_hwaccel_select="vp9_decoder"
2626 wmv3_crystalhd_decoder_select="crystalhd"
2627 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2628 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2629 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2630 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2631 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2632
2633 # parsers
2634 h264_parser_select="h264_decoder"
2635 hevc_parser_select="golomb"
2636 mpegvideo_parser_select="mpegvideo"
2637 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2638 vc1_parser_select="vc1dsp"
2639
2640 # bitstream_filters
2641 mjpeg2jpeg_bsf_select="jpegtables"
2642
2643 # external libraries
2644 chromaprint_muxer_deps="chromaprint"
2645 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2646 h264_videotoolbox_encoder_select="bzlib zlib iconv"
2647 libcelt_decoder_deps="libcelt"
2648 libdcadec_decoder_deps="libdcadec"
2649 libfaac_encoder_deps="libfaac"
2650 libfaac_encoder_select="audio_frame_queue"
2651 libfdk_aac_decoder_deps="libfdk_aac"
2652 libfdk_aac_encoder_deps="libfdk_aac"
2653 libfdk_aac_encoder_select="audio_frame_queue"
2654 libgme_demuxer_deps="libgme"
2655 libgsm_decoder_deps="libgsm"
2656 libgsm_encoder_deps="libgsm"
2657 libgsm_ms_decoder_deps="libgsm"
2658 libgsm_ms_encoder_deps="libgsm"
2659 libilbc_decoder_deps="libilbc"
2660 libilbc_encoder_deps="libilbc"
2661 libkvazaar_encoder_deps="libkvazaar"
2662 libmodplug_demuxer_deps="libmodplug"
2663 libmp3lame_encoder_deps="libmp3lame"
2664 libmp3lame_encoder_select="audio_frame_queue"
2665 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2666 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2667 libopencore_amrnb_encoder_select="audio_frame_queue"
2668 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2669 libopenh264_encoder_deps="libopenh264"
2670 libopenjpeg_decoder_deps="libopenjpeg"
2671 libopenjpeg_encoder_deps="libopenjpeg"
2672 libopus_decoder_deps="libopus"
2673 libopus_encoder_deps="libopus"
2674 libopus_encoder_select="audio_frame_queue"
2675 libschroedinger_decoder_deps="libschroedinger"
2676 libschroedinger_encoder_deps="libschroedinger"
2677 libshine_encoder_deps="libshine"
2678 libshine_encoder_select="audio_frame_queue"
2679 libspeex_decoder_deps="libspeex"
2680 libspeex_encoder_deps="libspeex"
2681 libspeex_encoder_select="audio_frame_queue"
2682 libtheora_encoder_deps="libtheora"
2683 libtwolame_encoder_deps="libtwolame"
2684 libutvideo_decoder_deps="libutvideo"
2685 libutvideo_encoder_deps="libutvideo"
2686 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2687 libvorbis_decoder_deps="libvorbis"
2688 libvorbis_encoder_deps="libvorbis"
2689 libvorbis_encoder_select="audio_frame_queue"
2690 libvpx_vp8_decoder_deps="libvpx"
2691 libvpx_vp8_encoder_deps="libvpx"
2692 libvpx_vp9_decoder_deps="libvpx"
2693 libvpx_vp9_encoder_deps="libvpx"
2694 libwavpack_encoder_deps="libwavpack"
2695 libwebp_encoder_deps="libwebp"
2696 libwebp_anim_encoder_deps="libwebp"
2697 libx262_encoder_deps="libx262"
2698 libx264_encoder_deps="libx264"
2699 libx264rgb_encoder_deps="libx264"
2700 libx264rgb_encoder_select="libx264_encoder"
2701 libx265_encoder_deps="libx265"
2702 libxavs_encoder_deps="libxavs"
2703 libxvid_encoder_deps="libxvid"
2704 libzvbi_teletext_decoder_deps="libzvbi"
2705 nvenc_encoder_deps="nvenc"
2706 nvenc_h264_encoder_deps="nvenc"
2707 nvenc_hevc_encoder_deps="nvenc"
2708 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2709 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2710 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2711 videotoolbox_encoder_suggest="vda_framework"
2712
2713 # demuxers / muxers
2714 ac3_demuxer_select="ac3_parser"
2715 asf_demuxer_select="riffdec"
2716 asf_o_demuxer_select="riffdec"
2717 asf_muxer_select="riffenc"
2718 asf_stream_muxer_select="asf_muxer"
2719 avi_demuxer_select="iso_media riffdec exif"
2720 avi_muxer_select="riffenc"
2721 avisynth_demuxer_deps="avisynth"
2722 avisynth_demuxer_select="riffdec"
2723 caf_demuxer_select="iso_media riffdec"
2724 dash_muxer_select="mp4_muxer"
2725 dirac_demuxer_select="dirac_parser"
2726 dts_demuxer_select="dca_parser"
2727 dtshd_demuxer_select="dca_parser"
2728 dv_demuxer_select="dvprofile"
2729 dv_muxer_select="dvprofile"
2730 dxa_demuxer_select="riffdec"
2731 eac3_demuxer_select="ac3_parser"
2732 f4v_muxer_select="mov_muxer"
2733 flac_demuxer_select="flac_parser"
2734 hds_muxer_select="flv_muxer"
2735 hls_muxer_select="mpegts_muxer"
2736 image2_alias_pix_demuxer_select="image2_demuxer"
2737 image2_brender_pix_demuxer_select="image2_demuxer"
2738 ipod_muxer_select="mov_muxer"
2739 ismv_muxer_select="mov_muxer"
2740 libnut_demuxer_deps="libnut"
2741 libnut_muxer_deps="libnut"
2742 matroska_audio_muxer_select="matroska_muxer"
2743 matroska_demuxer_select="iso_media riffdec"
2744 matroska_demuxer_suggest="bzlib lzo zlib"
2745 matroska_muxer_select="iso_media riffenc"
2746 mmf_muxer_select="riffenc"
2747 mov_demuxer_select="iso_media riffdec"
2748 mov_demuxer_suggest="zlib"
2749 mov_muxer_select="iso_media riffenc rtpenc_chain"
2750 mp3_demuxer_select="mpegaudio_parser"
2751 mp4_muxer_select="mov_muxer"
2752 mpegts_demuxer_select="iso_media"
2753 mpegts_muxer_select="adts_muxer latm_muxer"
2754 mpegtsraw_demuxer_select="mpegts_demuxer"
2755 mxf_d10_muxer_select="mxf_muxer"
2756 mxf_opatom_muxer_select="mxf_muxer"
2757 nut_muxer_select="riffenc"
2758 nuv_demuxer_select="riffdec"
2759 oga_muxer_select="ogg_muxer"
2760 ogg_demuxer_select="dirac_parse"
2761 opus_muxer_select="ogg_muxer"
2762 psp_muxer_select="mov_muxer"
2763 rtp_demuxer_select="sdp_demuxer"
2764 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2765 rtsp_demuxer_select="http_protocol rtpdec"
2766 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2767 sap_demuxer_select="sdp_demuxer"
2768 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2769 sdp_demuxer_select="rtpdec"
2770 smoothstreaming_muxer_select="ismv_muxer"
2771 spdif_muxer_select="aac_parser"
2772 spx_muxer_select="ogg_muxer"
2773 swf_demuxer_suggest="zlib"
2774 tak_demuxer_select="tak_parser"
2775 tg2_muxer_select="mov_muxer"
2776 tgp_muxer_select="mov_muxer"
2777 vobsub_demuxer_select="mpegps_demuxer"
2778 w64_demuxer_select="wav_demuxer"
2779 w64_muxer_select="wav_muxer"
2780 wav_demuxer_select="riffdec"
2781 wav_muxer_select="riffenc"
2782 webm_muxer_select="iso_media riffenc"
2783 webm_dash_manifest_demuxer_select="matroska_demuxer"
2784 wtv_demuxer_select="mpegts_demuxer riffdec"
2785 wtv_muxer_select="mpegts_muxer riffenc"
2786 xmv_demuxer_select="riffdec"
2787 xwma_demuxer_select="riffdec"
2788
2789 # indevs / outdevs
2790 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2791 alsa_outdev_deps="alsa_asoundlib_h"
2792 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2793 avfoundation_indev_select="avfoundation"
2794 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2795 caca_outdev_deps="libcaca"
2796 decklink_indev_deps="decklink pthreads"
2797 decklink_indev_extralibs="-lstdc++"
2798 decklink_outdev_deps="decklink pthreads"
2799 decklink_outdev_extralibs="-lstdc++"
2800 dshow_indev_deps="IBaseFilter"
2801 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2802 dv1394_indev_deps="dv1394"
2803 dv1394_indev_select="dv_demuxer"
2804 fbdev_indev_deps="linux_fb_h"
2805 fbdev_outdev_deps="linux_fb_h"
2806 gdigrab_indev_deps="CreateDIBSection"
2807 gdigrab_indev_extralibs="-lgdi32"
2808 gdigrab_indev_select="bmp_decoder"
2809 iec61883_indev_deps="libiec61883"
2810 jack_indev_deps="jack_jack_h"
2811 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2812 lavfi_indev_deps="avfilter"
2813 libcdio_indev_deps="libcdio"
2814 libdc1394_indev_deps="libdc1394"
2815 libv4l2_indev_deps="libv4l2"
2816 openal_indev_deps="openal"
2817 opengl_outdev_deps="opengl"
2818 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2819 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2820 pulse_indev_deps="libpulse"
2821 pulse_outdev_deps="libpulse"
2822 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2823 qtkit_indev_select="qtkit"
2824 sdl_outdev_deps="sdl"
2825 sndio_indev_deps="sndio_h"
2826 sndio_outdev_deps="sndio_h"
2827 v4l_indev_deps="linux_videodev_h"
2828 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2829 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2830 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2831 vfwcap_indev_extralibs="-lavicap32"
2832 x11grab_indev_deps="x11grab"
2833 x11grab_xcb_indev_deps="libxcb"
2834 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2835 xv_outdev_extralibs="-lXv -lX11 -lXext"
2836
2837 # protocols
2838 async_protocol_deps="threads"
2839 bluray_protocol_deps="libbluray"
2840 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2841 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2842 ffrtmpcrypt_protocol_select="tcp_protocol"
2843 ffrtmphttp_protocol_deps="!librtmp_protocol"
2844 ffrtmphttp_protocol_select="http_protocol"
2845 ftp_protocol_select="tcp_protocol"
2846 gopher_protocol_select="network"
2847 http_protocol_select="tcp_protocol"
2848 httpproxy_protocol_select="tcp_protocol"
2849 https_protocol_select="tls_protocol"
2850 icecast_protocol_select="http_protocol"
2851 librtmp_protocol_deps="librtmp"
2852 librtmpe_protocol_deps="librtmp"
2853 librtmps_protocol_deps="librtmp"
2854 librtmpt_protocol_deps="librtmp"
2855 librtmpte_protocol_deps="librtmp"
2856 libsmbclient_protocol_deps="libsmbclient gplv3"
2857 libssh_protocol_deps="libssh"
2858 mmsh_protocol_select="http_protocol"
2859 mmst_protocol_select="network"
2860 rtmp_protocol_deps="!librtmp_protocol"
2861 rtmp_protocol_select="tcp_protocol"
2862 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2863 rtmps_protocol_deps="!librtmp_protocol"
2864 rtmps_protocol_select="tls_protocol"
2865 rtmpt_protocol_select="ffrtmphttp_protocol"
2866 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2867 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2868 rtp_protocol_select="udp_protocol"
2869 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
2870 sctp_protocol_select="network"
2871 srtp_protocol_select="rtp_protocol"
2872 tcp_protocol_select="network"
2873 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
2874 tls_gnutls_protocol_select="tcp_protocol"
2875 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
2876 tls_openssl_protocol_select="tcp_protocol"
2877 tls_schannel_protocol_deps="schannel"
2878 tls_schannel_protocol_select="tcp_protocol"
2879 tls_securetransport_protocol_deps="securetransport"
2880 tls_securetransport_protocol_select="tcp_protocol"
2881 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2882 udp_protocol_select="network"
2883 udplite_protocol_select="network"
2884 unix_protocol_deps="sys_un_h"
2885 unix_protocol_select="network"
2886
2887 # filters
2888 afftfilt_filter_deps="avcodec"
2889 afftfilt_filter_select="fft"
2890 amovie_filter_deps="avcodec avformat"
2891 aresample_filter_deps="swresample"
2892 ass_filter_deps="libass"
2893 asyncts_filter_deps="avresample"
2894 atempo_filter_deps="avcodec"
2895 atempo_filter_select="rdft"
2896 azmq_filter_deps="libzmq"
2897 blackframe_filter_deps="gpl"
2898 boxblur_filter_deps="gpl"
2899 bs2b_filter_deps="libbs2b"
2900 colormatrix_filter_deps="gpl"
2901 cover_rect_filter_deps="avcodec avformat gpl"
2902 cropdetect_filter_deps="gpl"
2903 delogo_filter_deps="gpl"
2904 deshake_filter_select="pixelutils"
2905 drawtext_filter_deps="libfreetype"
2906 ebur128_filter_deps="gpl"
2907 eq_filter_deps="gpl"
2908 fftfilt_filter_deps="avcodec"
2909 fftfilt_filter_select="rdft"
2910 find_rect_filter_deps="avcodec avformat gpl"
2911 firequalizer_filter_deps="avcodec"
2912 firequalizer_filter_select="rdft"
2913 flite_filter_deps="libflite"
2914 frei0r_filter_deps="frei0r dlopen"
2915 frei0r_src_filter_deps="frei0r dlopen"
2916 fspp_filter_deps="gpl"
2917 geq_filter_deps="gpl"
2918 histeq_filter_deps="gpl"
2919 hqdn3d_filter_deps="gpl"
2920 hwupload_cuda_filter_deps="cuda"
2921 interlace_filter_deps="gpl"
2922 kerndeint_filter_deps="gpl"
2923 ladspa_filter_deps="ladspa dlopen"
2924 mcdeint_filter_deps="avcodec gpl"
2925 movie_filter_deps="avcodec avformat"
2926 mpdecimate_filter_deps="gpl"
2927 mpdecimate_filter_select="pixelutils"
2928 mptestsrc_filter_deps="gpl"
2929 negate_filter_deps="lut_filter"
2930 nnedi_filter_deps="gpl"
2931 ocr_filter_deps="libtesseract"
2932 ocv_filter_deps="libopencv"
2933 owdenoise_filter_deps="gpl"
2934 pan_filter_deps="swresample"
2935 perspective_filter_deps="gpl"
2936 phase_filter_deps="gpl"
2937 pp7_filter_deps="gpl"
2938 pp_filter_deps="gpl postproc"
2939 pullup_filter_deps="gpl"
2940 removelogo_filter_deps="avcodec avformat swscale"
2941 repeatfields_filter_deps="gpl"
2942 resample_filter_deps="avresample"
2943 rubberband_filter_deps="librubberband"
2944 sab_filter_deps="gpl swscale"
2945 scale2ref_filter_deps="swscale"
2946 scale_filter_deps="swscale"
2947 select_filter_select="pixelutils"
2948 showcqt_filter_deps="avcodec avformat swscale"
2949 showcqt_filter_select="fft"
2950 showfreqs_filter_deps="avcodec"
2951 showfreqs_filter_select="fft"
2952 showspectrum_filter_deps="avcodec"
2953 showspectrum_filter_select="fft"
2954 showspectrumpic_filter_deps="avcodec"
2955 showspectrumpic_filter_select="fft"
2956 smartblur_filter_deps="gpl swscale"
2957 sofalizer_filter_deps="netcdf avcodec"
2958 sofalizer_filter_select="fft"
2959 spectrumsynth_filter_deps="avcodec"
2960 spectrumsynth_filter_select="fft"
2961 spp_filter_deps="gpl avcodec"
2962 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2963 stereo3d_filter_deps="gpl"
2964 subtitles_filter_deps="avformat avcodec libass"
2965 super2xsai_filter_deps="gpl"
2966 pixfmts_super2xsai_test_deps="super2xsai_filter"
2967 tinterlace_filter_deps="gpl"
2968 tinterlace_merge_test_deps="tinterlace_filter"
2969 tinterlace_pad_test_deps="tinterlace_filter"
2970 uspp_filter_deps="gpl avcodec"
2971 vidstabdetect_filter_deps="libvidstab"
2972 vidstabtransform_filter_deps="libvidstab"
2973 zmq_filter_deps="libzmq"
2974 zoompan_filter_deps="swscale"
2975 zscale_filter_deps="libzimg"
2976
2977 # examples
2978 avcodec_example_deps="avcodec avutil"
2979 avio_dir_cmd="avformat avutil"
2980 avio_reading="avformat avcodec avutil"
2981 decoding_encoding_example_deps="avcodec avformat avutil"
2982 demuxing_decoding_example_deps="avcodec avformat avutil"
2983 extract_mvs_example_deps="avcodec avformat avutil"
2984 filter_audio_example_deps="avfilter avutil"
2985 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2986 filtering_video_example_deps="avfilter avcodec avformat avutil"
2987 metadata_example_deps="avformat avutil"
2988 muxing_example_deps="avcodec avformat avutil swscale"
2989 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2990 remuxing_example_deps="avcodec avformat avutil"
2991 resampling_audio_example_deps="avutil swresample"
2992 scaling_video_example_deps="avutil swscale"
2993 transcode_aac_example_deps="avcodec avformat swresample"
2994 transcoding_example_deps="avfilter avcodec avformat avutil"
2995
2996 # libraries, in linking order
2997 avcodec_deps="avutil"
2998 avdevice_deps="avformat avcodec avutil"
2999 avfilter_deps="avutil"
3000 avformat_deps="avcodec avutil"
3001 avresample_deps="avutil"
3002 postproc_deps="avutil gpl"
3003 swresample_deps="avutil"
3004 swscale_deps="avutil"
3005
3006 # programs
3007 ffmpeg_deps="avcodec avfilter avformat swresample"
3008 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3009                null_filter
3010                setpts_filter trim_filter"
3011 ffplay_deps="avcodec avformat swscale swresample sdl"
3012 ffplay_libs='$sdl_libs'
3013 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3014 ffprobe_deps="avcodec avformat"
3015 ffserver_deps="avformat fork sarestart"
3016 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3017
3018 # documentation
3019 podpages_deps="perl"
3020 manpages_deps="perl pod2man"
3021 htmlpages_deps="perl"
3022 htmlpages_deps_any="makeinfo_html texi2html"
3023 txtpages_deps="perl makeinfo"
3024 doc_deps_any="manpages htmlpages podpages txtpages"
3025
3026 # default parameters
3027
3028 logfile="config.log"
3029
3030 # installation paths
3031 prefix_default="/usr/local"
3032 bindir_default='${prefix}/bin'
3033 datadir_default='${prefix}/share/ffmpeg'
3034 docdir_default='${prefix}/share/doc/ffmpeg'
3035 incdir_default='${prefix}/include'
3036 libdir_default='${prefix}/lib'
3037 mandir_default='${prefix}/share/man'
3038
3039 # toolchain
3040 ar_default="ar"
3041 cc_default="gcc"
3042 cxx_default="g++"
3043 host_cc_default="gcc"
3044 cp_f="cp -f"
3045 doxygen_default="doxygen"
3046 install="install"
3047 ln_s="ln -s -f"
3048 nm_default="nm -g"
3049 objformat="elf"
3050 pkg_config_default=pkg-config
3051 ranlib_default="ranlib"
3052 strip_default="strip"
3053 yasmexe_default="yasm"
3054 windres_default="windres"
3055
3056 # OS
3057 target_os_default=$(tolower $(uname -s))
3058 host_os=$target_os_default
3059
3060 # machine
3061 if test "$target_os_default" = aix; then
3062     arch_default=$(uname -p)
3063     strip_default="strip -X32_64"
3064 else
3065     arch_default=$(uname -m)
3066 fi
3067 cpu="generic"
3068 intrinsics="none"
3069
3070 # configurable options
3071 enable $PROGRAM_LIST
3072 enable $DOCUMENT_LIST
3073 enable $EXAMPLE_LIST
3074 enable $(filter_out avresample $LIBRARY_LIST)
3075 enable stripping
3076
3077 enable asm
3078 enable debug
3079 enable doc
3080 enable faan faandct faanidct
3081 enable optimizations
3082 enable runtime_cpudetect
3083 enable safe_bitstream_reader
3084 enable static
3085 enable swscale_alpha
3086 enable valgrind_backtrace
3087
3088 sws_max_filter_size_default=256
3089 set_default sws_max_filter_size
3090
3091 # Enable hwaccels by default.
3092 enable d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3093 enable xlib
3094
3095 enable vda_framework videotoolbox videotoolbox_encoder
3096
3097 # build settings
3098 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3099 LIBPREF="lib"
3100 LIBSUF=".a"
3101 FULLNAME='$(NAME)$(BUILDSUF)'
3102 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3103 SLIBPREF="lib"
3104 SLIBSUF=".so"
3105 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3106 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3107 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3108 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3109 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3110 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3111
3112 asflags_filter=echo
3113 cflags_filter=echo
3114 ldflags_filter=echo
3115
3116 AS_C='-c'
3117 AS_O='-o $@'
3118 CC_C='-c'
3119 CC_E='-E -o $@'
3120 CC_O='-o $@'
3121 CXX_C='-c'
3122 CXX_O='-o $@'
3123 OBJCC_C='-c'
3124 OBJCC_E='-E -o $@'
3125 OBJCC_O='-o $@'
3126 LD_O='-o $@'
3127 LD_LIB='-l%'
3128 LD_PATH='-L'
3129 HOSTCC_C='-c'
3130 HOSTCC_E='-E -o $@'
3131 HOSTCC_O='-o $@'
3132 HOSTLD_O='-o $@'
3133
3134 host_libs='-lm'
3135 host_cflags_filter=echo
3136 host_ldflags_filter=echo
3137
3138 target_path='$(CURDIR)'
3139
3140 # since the object filename is not given with the -MM flag, the compiler
3141 # is only able to print the basename, and we must add the path ourselves
3142 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3143 DEPFLAGS='-MM'
3144
3145 # find source path
3146 if test -f configure; then
3147     source_path=.
3148 else
3149     source_path=$(cd $(dirname "$0"); pwd)
3150     case "$source_path" in
3151         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3152     esac
3153     test -e "$source_path/config.h" &&
3154         die "Out of tree builds are impossible with config.h in source dir."
3155 fi
3156
3157 for v in "$@"; do
3158     r=${v#*=}
3159     l=${v%"$r"}
3160     r=$(sh_quote "$r")
3161     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3162 done
3163
3164 find_things(){
3165     thing=$1
3166     pattern=$2
3167     file=$source_path/$3
3168     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3169 }
3170
3171 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3172 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3173 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3174 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3175 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
3176 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3177 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3178 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3179 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3180 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3181
3182 find_things_extern(){
3183     thing=$1
3184     pattern=$2
3185     file=$source_path/$3
3186     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3187 }
3188
3189 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3190
3191 ALL_COMPONENTS="
3192     $BSF_LIST
3193     $DECODER_LIST
3194     $DEMUXER_LIST
3195     $ENCODER_LIST
3196     $FILTER_LIST
3197     $HWACCEL_LIST
3198     $INDEV_LIST
3199     $MUXER_LIST
3200     $OUTDEV_LIST
3201     $PARSER_LIST
3202     $PROTOCOL_LIST
3203 "
3204
3205 for n in $COMPONENT_LIST; do
3206     v=$(toupper ${n%s})_LIST
3207     eval enable \$$v
3208     eval ${n}_if_any="\$$v"
3209 done
3210
3211 enable $ARCH_EXT_LIST
3212
3213 die_unknown(){
3214     echo "Unknown option \"$1\"."
3215     echo "See $0 --help for available options."
3216     exit 1
3217 }
3218
3219 print_in_columns() {
3220     cols=$(expr $ncols / 24)
3221     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3222 }
3223
3224 show_list() {
3225     suffix=_$1
3226     shift
3227     echo $* | sed s/$suffix//g | print_in_columns
3228     exit 0
3229 }
3230
3231 rand_list(){
3232     IFS=', '
3233     set -- $*
3234     unset IFS
3235     for thing; do
3236         comp=${thing%:*}
3237         prob=${thing#$comp}
3238         prob=${prob#:}
3239         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3240         echo "prob ${prob:-0.5}"
3241         printf '%s\n' $comp
3242     done
3243 }
3244
3245 do_random(){
3246     action=$1
3247     shift
3248     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3249     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3250 }
3251
3252 for opt do
3253     optval="${opt#*=}"
3254     case "$opt" in
3255         --extra-ldflags=*)
3256             add_ldflags $optval
3257         ;;
3258         --extra-ldexeflags=*)
3259             add_ldexeflags $optval
3260         ;;
3261         --extra-ldlibflags=*)
3262             add_ldlibflags $optval
3263         ;;
3264         --extra-libs=*)
3265             add_extralibs $optval
3266         ;;
3267         --disable-devices)
3268             disable $INDEV_LIST $OUTDEV_LIST
3269         ;;
3270         --enable-debug=*)
3271             debuglevel="$optval"
3272         ;;
3273         --disable-programs)
3274             disable $PROGRAM_LIST
3275         ;;
3276         --disable-everything)
3277             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3278         ;;
3279         --disable-all)
3280             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3281             disable $LIBRARY_LIST $PROGRAM_LIST doc
3282             enable avutil
3283         ;;
3284         --enable-random|--disable-random)
3285             action=${opt%%-random}
3286             do_random ${action#--} $COMPONENT_LIST
3287         ;;
3288         --enable-random=*|--disable-random=*)
3289             action=${opt%%-random=*}
3290             do_random ${action#--} $optval
3291         ;;
3292         --enable-*=*|--disable-*=*)
3293             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3294             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3295             eval list=\$$(toupper $thing)_LIST
3296             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3297             list=$(filter "$name" $list)
3298             [ "$list" = "" ] && warn "Option $opt did not match anything"
3299             $action $list
3300         ;;
3301         --enable-?*|--disable-?*)
3302             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3303             if is_in $option $COMPONENT_LIST; then
3304                 test $action = disable && action=unset
3305                 eval $action \$$(toupper ${option%s})_LIST
3306             elif is_in $option $CMDLINE_SELECT; then
3307                 $action $option
3308             else
3309                 die_unknown $opt
3310             fi
3311         ;;
3312         --list-*)
3313             NAME="${opt#--list-}"
3314             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3315             NAME=${NAME%s}
3316             eval show_list $NAME \$$(toupper $NAME)_LIST
3317         ;;
3318         --help|-h) show_help
3319         ;;
3320         --fatal-warnings) enable fatal_warnings
3321         ;;
3322         *)
3323             optname="${opt%%=*}"
3324             optname="${optname#--}"
3325             optname=$(echo "$optname" | sed 's/-/_/g')
3326             if is_in $optname $CMDLINE_SET; then
3327                 eval $optname='$optval'
3328             elif is_in $optname $CMDLINE_APPEND; then
3329                 append $optname "$optval"
3330             else
3331                 die_unknown $opt
3332             fi
3333         ;;
3334     esac
3335 done
3336
3337 for e in $env; do
3338     eval "export $e"
3339 done
3340
3341 disabled logging && logfile=/dev/null
3342
3343 # Disable all the library-specific components if the library itself
3344 # is disabled, see AVCODEC_LIST and following _LIST variables.
3345
3346 disable_components(){
3347     disabled ${1} && disable $(
3348         eval components="\$$(toupper ${1})_COMPONENTS"
3349         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3350     )
3351 }
3352
3353 map 'disable_components $v' $LIBRARY_LIST
3354
3355 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3356 set >> $logfile
3357
3358 test -n "$valgrind" && toolchain="valgrind-memcheck"
3359
3360 case "$toolchain" in
3361     *-asan)
3362         cc_default="${toolchain%-asan}"
3363         add_cflags  -fsanitize=address
3364         add_ldflags -fsanitize=address
3365     ;;
3366     *-tsan)
3367         cc_default="${toolchain%-tsan}"
3368         add_cflags  -fsanitize=thread -pie
3369         add_ldflags -fsanitize=thread -pie
3370         case "$toolchain" in
3371             gcc-tsan)
3372                 add_cflags  -fPIC
3373                 add_ldflags -fPIC
3374                 ;;
3375         esac
3376     ;;
3377     *-usan)
3378         cc_default="${toolchain%-usan}"
3379         add_cflags  -fsanitize=undefined
3380         add_ldflags -fsanitize=undefined
3381     ;;
3382     valgrind-*)
3383         target_exec_default="valgrind"
3384         case "$toolchain" in
3385             valgrind-massif)
3386                 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"
3387                 ;;
3388             valgrind-memcheck)
3389                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3390                 ;;
3391         esac
3392     ;;
3393     msvc)
3394         # Check whether the current MSVC version needs the C99 converter.
3395         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3396         # support enough of C99 to build ffmpeg. Default to the new
3397         # behaviour if the regexp was unable to match anything, since this
3398         # successfully parses the version number of existing supported
3399         # versions that require the converter (MSVC 2010 and 2012).
3400         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3401         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3402             cc_default="cl"
3403         else
3404             cc_default="c99wrap cl"
3405         fi
3406         ld_default="$source_path/compat/windows/mslink"
3407         nm_default="dumpbin -symbols"
3408         ar_default="lib"
3409         case "$arch" in
3410         arm*)
3411             as_default="armasm"
3412             ;;
3413         esac
3414         target_os_default="win32"
3415         # Use a relative path for TMPDIR. This makes sure all the
3416         # ffconf temp files are written with a relative path, avoiding
3417         # issues with msys/win32 path conversion for MSVC parameters
3418         # such as -Fo<file> or -out:<file>.
3419         TMPDIR=.
3420     ;;
3421     icl)
3422         cc_default="icl"
3423         ld_default="xilink"
3424         nm_default="dumpbin -symbols"
3425         ar_default="xilib"
3426         target_os_default="win32"
3427         TMPDIR=.
3428     ;;
3429     gcov)
3430         add_cflags  -fprofile-arcs -ftest-coverage
3431         add_ldflags -fprofile-arcs -ftest-coverage
3432     ;;
3433     hardened)
3434         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3435         add_cflags   -fno-strict-overflow -fstack-protector-all
3436         add_ldflags  -Wl,-z,relro -Wl,-z,now
3437     ;;
3438     ?*)
3439         die "Unknown toolchain $toolchain"
3440     ;;
3441 esac
3442
3443 test -n "$cross_prefix" && enable cross_compile
3444
3445 if enabled cross_compile; then
3446     test -n "$arch" && test -n "$target_os" ||
3447         die "Must specify target arch and OS when cross-compiling"
3448 fi
3449
3450 ar_default="${cross_prefix}${ar_default}"
3451 cc_default="${cross_prefix}${cc_default}"
3452 cxx_default="${cross_prefix}${cxx_default}"
3453 nm_default="${cross_prefix}${nm_default}"
3454 pkg_config_default="${cross_prefix}${pkg_config_default}"
3455 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3456     ranlib_default="${cross_prefix}${ranlib_default} -D"
3457 else
3458     ranlib_default="${cross_prefix}${ranlib_default}"
3459 fi
3460 strip_default="${cross_prefix}${strip_default}"
3461 windres_default="${cross_prefix}${windres_default}"
3462
3463 sysinclude_default="${sysroot}/usr/include"
3464
3465 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3466     target_exec target_os yasmexe
3467 enabled cross_compile || host_cc_default=$cc
3468 set_default host_cc
3469
3470 pkg_config_fail_message=""
3471 if ! $pkg_config --version >/dev/null 2>&1; then
3472     warn "$pkg_config not found, library detection may fail."
3473     pkg_config=false
3474 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3475     pkg_config_fail_message="
3476 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3477 fi
3478
3479 if test $doxygen != $doxygen_default && \
3480   ! $doxygen --version >/dev/null 2>&1; then
3481     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3482 fi
3483
3484 exesuf() {
3485     case $1 in
3486         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3487     esac
3488 }
3489
3490 EXESUF=$(exesuf $target_os)
3491 HOSTEXESUF=$(exesuf $host_os)
3492
3493 # set temporary file name
3494 : ${TMPDIR:=$TEMPDIR}
3495 : ${TMPDIR:=$TMP}
3496 : ${TMPDIR:=/tmp}
3497
3498 if [ -n "$tempprefix" ] ; then
3499     mktemp(){
3500         echo $tempprefix.${HOSTNAME}.${UID}
3501     }
3502 elif ! check_cmd mktemp -u XXXXXX; then
3503     # simple replacement for missing mktemp
3504     # NOT SAFE FOR GENERAL USE
3505     mktemp(){
3506         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3507     }
3508 fi
3509
3510 tmpfile(){
3511     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3512         (set -C; exec > $tmp) 2>/dev/null ||
3513         die "Unable to create temporary file in $TMPDIR."
3514     append TMPFILES $tmp
3515     eval $1=$tmp
3516 }
3517
3518 trap 'rm -f -- $TMPFILES' EXIT
3519
3520 tmpfile TMPASM .asm
3521 tmpfile TMPC   .c
3522 tmpfile TMPCPP .cpp
3523 tmpfile TMPE   $EXESUF
3524 tmpfile TMPH   .h
3525 tmpfile TMPM   .m
3526 tmpfile TMPO   .o
3527 tmpfile TMPS   .S
3528 tmpfile TMPSH  .sh
3529 tmpfile TMPV   .ver
3530
3531 unset -f mktemp
3532
3533 chmod +x $TMPE
3534
3535 # make sure we can execute files in $TMPDIR
3536 cat > $TMPSH 2>> $logfile <<EOF
3537 #! /bin/sh
3538 EOF
3539 chmod +x $TMPSH >> $logfile 2>&1
3540 if ! $TMPSH >> $logfile 2>&1; then
3541     cat <<EOF
3542 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3543 variable to another directory and make sure that it is not mounted noexec.
3544 EOF
3545     die "Sanity test failed."
3546 fi
3547
3548 armasm_flags(){
3549     for flag; do
3550         case $flag in
3551             # Filter out MSVC cl.exe options from cflags that shouldn't
3552             # be passed to gas-preprocessor
3553             -M[TD]*)                                            ;;
3554             *)                  echo $flag                      ;;
3555         esac
3556    done
3557 }
3558
3559 ccc_flags(){
3560     for flag; do
3561         case $flag in
3562             -std=c99)           echo -c99                       ;;
3563             -mcpu=*)            echo -arch ${flag#*=}           ;;
3564             -mieee)             echo -ieee                      ;;
3565             -O*|-fast)          echo $flag                      ;;
3566             -fno-math-errno)    echo -assume nomath_errno       ;;
3567             -g)                 echo -g3                        ;;
3568             -Wall)              echo -msg_enable level2         ;;
3569             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3570             -Wl,*)              echo $flag                      ;;
3571             -f*|-W*)                                            ;;
3572             *)                  echo $flag                      ;;
3573         esac
3574    done
3575 }
3576
3577 cparser_flags(){
3578     for flag; do
3579         case $flag in
3580             -Wno-switch)             echo -Wno-switch-enum ;;
3581             -Wno-format-zero-length) ;;
3582             -Wdisabled-optimization) ;;
3583             -Wno-pointer-sign)       echo -Wno-other ;;
3584             *)                       echo $flag ;;
3585         esac
3586     done
3587 }
3588
3589 msvc_common_flags(){
3590     for flag; do
3591         case $flag in
3592             # In addition to specifying certain flags under the compiler
3593             # specific filters, they must be specified here as well or else the
3594             # generic catch all at the bottom will print the original flag.
3595             -Wall)                ;;
3596             -std=c99)             ;;
3597             # Common flags
3598             -fomit-frame-pointer) ;;
3599             -g)                   echo -Z7 ;;
3600             -fno-math-errno)      ;;
3601             -fno-common)          ;;
3602             -fno-signed-zeros)    ;;
3603             -fPIC)                ;;
3604             -mthumb)              ;;
3605             -march=*)             ;;
3606             -lz)                  echo zlib.lib ;;
3607             -lavifil32)           echo vfw32.lib ;;
3608             -lavicap32)           echo vfw32.lib user32.lib ;;
3609             -lx264)               echo libx264.lib ;;
3610             -l*)                  echo ${flag#-l}.lib ;;
3611             -LARGEADDRESSAWARE)   echo $flag ;;
3612             -L*)                  echo -libpath:${flag#-L} ;;
3613             *)                    echo $flag ;;
3614         esac
3615     done
3616 }
3617
3618 msvc_flags(){
3619     msvc_common_flags "$@"
3620     for flag; do
3621         case $flag in
3622             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3623                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3624                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3625                                        -wd4307 \
3626                                        -wd4273 -wd4554 -wd4701 ;;
3627         esac
3628     done
3629 }
3630
3631 icl_flags(){
3632     msvc_common_flags "$@"
3633     for flag; do
3634         case $flag in
3635             # Despite what Intel's documentation says -Wall, which is supported
3636             # on Windows, does enable remarks so disable them here.
3637             -Wall)                echo $flag -Qdiag-disable:remark ;;
3638             -std=c99)             echo -Qstd=c99 ;;
3639             -flto)                echo -ipo ;;
3640         esac
3641     done
3642 }
3643
3644 icc_flags(){
3645     for flag; do
3646         case $flag in
3647             -flto)                echo -ipo ;;
3648             *)                    echo $flag ;;
3649         esac
3650     done
3651 }
3652
3653 pgi_flags(){
3654     for flag; do
3655         case $flag in
3656             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3657             -fomit-frame-pointer) echo -Mnoframe ;;
3658             -g)                   echo -gopt ;;
3659             *)                    echo $flag ;;
3660         esac
3661     done
3662 }
3663
3664 suncc_flags(){
3665     for flag; do
3666         case $flag in
3667             -march=*|-mcpu=*)
3668                 case "${flag#*=}" in
3669                     native)                   echo -xtarget=native       ;;
3670                     v9|niagara)               echo -xarch=sparc          ;;
3671                     ultrasparc)               echo -xarch=sparcvis       ;;
3672                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3673                     i586|pentium)             echo -xchip=pentium        ;;
3674                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3675                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3676                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3677                     pentium4*)          echo -xtarget=pentium4           ;;
3678                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3679                     *-sse3)             echo -xarch=sse3                 ;;
3680                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3681                     bonnell)                   echo -xarch=ssse3         ;;
3682                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3683                     westmere)                  echo -xtarget=westmere    ;;
3684                     silvermont)                echo -xarch=sse4_2        ;;
3685                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3686                     core-avx*|ivybridge|haswell|broadwell)
3687                                                echo -xarch=avx           ;;
3688                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3689                     btver1)                    echo -xarch=amdsse4a      ;;
3690                     btver2|bdver*)             echo -xarch=avx           ;;
3691                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3692                     k8|opteron|athlon64|athlon-fx)
3693                                                echo -xarch=sse2a         ;;
3694                     athlon*)                   echo -xarch=pentium_proa  ;;
3695                 esac
3696                 ;;
3697             -std=c99)             echo -xc99              ;;
3698             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3699             -fPIC)                echo -KPIC -xcode=pic32 ;;
3700             -W*,*)                echo $flag              ;;
3701             -f*-*|-W*|-mimpure-text)                      ;;
3702             -shared)              echo -G                 ;;
3703             *)                    echo $flag              ;;
3704         esac
3705     done
3706 }
3707
3708 tms470_flags(){
3709     for flag; do
3710         case $flag in
3711             -march=*|-mcpu=*)
3712                 case "${flag#*=}" in
3713                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3714                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3715                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3716                     armv6*|arm11*)          echo -mv=6   ;;
3717                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3718                                             echo -mv=5e  ;;
3719                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3720                 esac
3721                 ;;
3722             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3723             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3724             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3725             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3726             -msoft-float)   echo --float_support=vfplib       ;;
3727             -O[0-3]|-mf=*)  echo $flag                        ;;
3728             -g)             echo -g -mn                       ;;
3729             -pds=*)         echo $flag                        ;;
3730             -D*|-I*)        echo $flag                        ;;
3731             --gcc|--abi=*)  echo $flag                        ;;
3732             -me)            echo $flag                        ;;
3733         esac
3734     done
3735 }
3736
3737 probe_cc(){
3738     pfx=$1
3739     _cc=$2
3740     first=$3
3741
3742     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3743     unset _ld_o _ldflags _ld_lib _ld_path
3744     unset _depflags _DEPCMD _DEPFLAGS
3745     _flags_filter=echo
3746
3747     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3748         true # no-op to avoid reading stdin in following checks
3749     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3750         _type=llvm_gcc
3751         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3752         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3753         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3754         _cflags_speed='-O3'
3755         _cflags_size='-Os'
3756     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3757         _type=gcc
3758         gcc_version=$($_cc --version | head -n1)
3759         gcc_basever=$($_cc -dumpversion)
3760         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3761         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3762         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3763         case $gcc_basever in
3764             2) ;;
3765             2.*) ;;
3766             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3767         esac
3768         if [ "$first" = true ]; then
3769             case $gcc_basever in
3770                 4.2*)
3771                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3772             esac
3773         fi
3774         _cflags_speed='-O3'
3775         _cflags_size='-Os'
3776     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3777         _type=icc
3778         _ident=$($_cc --version | head -n1)
3779         _depflags='-MMD'
3780         _cflags_speed='-O3'
3781         _cflags_size='-Os'
3782         _cflags_noopt='-O1'
3783         _flags_filter=icc_flags
3784     elif $_cc -v 2>&1 | grep -q xlc; then
3785         _type=xlc
3786         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3787         _cflags_speed='-O5'
3788         _cflags_size='-O5 -qcompact'
3789     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3790         _type=ccc
3791         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3792         _DEPFLAGS='-M'
3793         _cflags_speed='-fast'
3794         _cflags_size='-O1'
3795         _flags_filter=ccc_flags
3796     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3797         test -d "$sysroot" || die "No valid sysroot specified."
3798         _type=armcc
3799         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3800         armcc_conf="$PWD/armcc.conf"
3801         $_cc --arm_linux_configure                 \
3802              --arm_linux_config_file="$armcc_conf" \
3803              --configure_sysroot="$sysroot"        \
3804              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3805              die "Error creating armcc configuration file."
3806         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3807         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3808         as_default="${cross_prefix}gcc"
3809         _depflags='-MMD'
3810         _cflags_speed='-O3'
3811         _cflags_size='-Os'
3812     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3813         _type=tms470
3814         _ident=$($_cc -version | head -n1 | tr -s ' ')
3815         _flags='--gcc --abi=eabi -me'
3816         _cc_e='-ppl -fe=$@'
3817         _cc_o='-fe=$@'
3818         _depflags='-ppa -ppd=$(@:.o=.d)'
3819         _cflags_speed='-O3 -mf=5'
3820         _cflags_size='-O3 -mf=2'
3821         _flags_filter=tms470_flags
3822     elif $_cc -v 2>&1 | grep -q clang; then
3823         _type=clang
3824         _ident=$($_cc --version 2>/dev/null | head -n1)
3825         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3826         _cflags_speed='-O3'
3827         _cflags_size='-Os'
3828     elif $_cc -V 2>&1 | grep -q Sun; then
3829         _type=suncc
3830         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3831         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3832         _DEPFLAGS='-xM1 -xc99'
3833         _ldflags='-std=c99'
3834         _cflags_speed='-O5'
3835         _cflags_size='-O5 -xspace'
3836         _flags_filter=suncc_flags
3837     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3838         _type=pathscale
3839         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3840         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3841         _cflags_speed='-O2'
3842         _cflags_size='-Os'
3843         _flags_filter='filter_out -Wdisabled-optimization'
3844     elif $_cc -v 2>&1 | grep -q Open64; then
3845         _type=open64
3846         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3847         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3848         _cflags_speed='-O2'
3849         _cflags_size='-Os'
3850         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3851     elif $_cc -V 2>&1 | grep -q Portland; then
3852         _type=pgi
3853         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3854         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3855         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3856         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3857         _cflags_noopt="-O"
3858         _flags_filter=pgi_flags
3859     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3860         _type=armasm
3861         _ident=$($_cc | head -n1)
3862         # 4509: "This form of conditional instruction is deprecated"
3863         _flags="-nologo -ignore 4509"
3864         _flags_filter=armasm_flags
3865     elif $_cc 2>&1 | grep -q Intel; then
3866         _type=icl
3867         _ident=$($_cc 2>&1 | head -n1)
3868         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3869         # Not only is O3 broken on 13.x+ but it is slower on all previous
3870         # versions (tested) as well.
3871         _cflags_speed="-O2"
3872         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3873         if $_cc 2>&1 | grep -q Linker; then
3874             _ld_o='-out:$@'
3875         else
3876             _ld_o='-Fe$@'
3877         fi
3878         _cc_o='-Fo$@'
3879         _cc_e='-P'
3880         _flags_filter=icl_flags
3881         _ld_lib='lib%.a'
3882         _ld_path='-libpath:'
3883         # -Qdiag-error to make icl error when seeing certain unknown arguments
3884         _flags='-nologo -Qdiag-error:4044,10157'
3885         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3886         # with MSVC which enables it by default.
3887         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3888         disable stripping
3889     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3890         _type=msvc
3891         _ident=$($_cc 2>&1 | head -n1)
3892         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3893         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3894         _cflags_speed="-O2"
3895         _cflags_size="-O1"
3896         if $_cc -nologo- 2>&1 | grep -q Linker; then
3897             _ld_o='-out:$@'
3898         else
3899             _ld_o='-Fe$@'
3900         fi
3901         _cc_o='-Fo$@'
3902         _cc_e='-P -Fi$@'
3903         _flags_filter=msvc_flags
3904         _ld_lib='lib%.a'
3905         _ld_path='-libpath:'
3906         _flags='-nologo'
3907         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
3908         disable stripping
3909     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3910         _type=cparser
3911         _ident=$($_cc --version | head -n1)
3912         _depflags='-MMD'
3913         _cflags_speed='-O4'
3914         _cflags_size='-O2'
3915         _flags_filter=cparser_flags
3916     fi
3917
3918     eval ${pfx}_type=\$_type
3919     eval ${pfx}_ident=\$_ident
3920 }
3921
3922 set_ccvars(){
3923     eval ${1}_C=\${_cc_c-\${${1}_C}}
3924     eval ${1}_E=\${_cc_e-\${${1}_E}}
3925     eval ${1}_O=\${_cc_o-\${${1}_O}}
3926
3927     if [ -n "$_depflags" ]; then
3928         eval ${1}_DEPFLAGS=\$_depflags
3929     else
3930         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3931         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3932         eval DEP${1}FLAGS=\$_flags
3933     fi
3934 }
3935
3936 probe_cc cc "$cc" "true"
3937 cflags_filter=$_flags_filter
3938 cflags_speed=$_cflags_speed
3939 cflags_size=$_cflags_size
3940 cflags_noopt=$_cflags_noopt
3941 add_cflags $_flags $_cflags
3942 cc_ldflags=$_ldflags
3943 set_ccvars CC
3944
3945 probe_cc hostcc "$host_cc"
3946 host_cflags_filter=$_flags_filter
3947 add_host_cflags  $_flags $_cflags
3948 set_ccvars HOSTCC
3949
3950 test -n "$cc_type" && enable $cc_type ||
3951     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3952
3953 : ${as_default:=$cc}
3954 : ${objcc_default:=$cc}
3955 : ${dep_cc_default:=$cc}
3956 : ${ld_default:=$cc}
3957 : ${host_ld_default:=$host_cc}
3958 set_default ar as objcc dep_cc ld host_ld windres
3959
3960 probe_cc as "$as"
3961 asflags_filter=$_flags_filter
3962 add_asflags $_flags $_cflags
3963 set_ccvars AS
3964
3965 probe_cc objcc "$objcc"
3966 objcflags_filter=$_flags_filter
3967 add_objcflags $_flags $_cflags
3968 set_ccvars OBJC
3969
3970 probe_cc ld "$ld"
3971 ldflags_filter=$_flags_filter
3972 add_ldflags $_flags $_ldflags
3973 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3974 LD_O=${_ld_o-$LD_O}
3975 LD_LIB=${_ld_lib-$LD_LIB}
3976 LD_PATH=${_ld_path-$LD_PATH}
3977
3978 probe_cc hostld "$host_ld"
3979 host_ldflags_filter=$_flags_filter
3980 add_host_ldflags $_flags $_ldflags
3981 HOSTLD_O=${_ld_o-$HOSTLD_O}
3982
3983 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3984     probe_cc depcc "$dep_cc"
3985     CCDEP=${_DEPCMD:-$DEPCMD}
3986     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3987     DEPCCFLAGS=$_flags
3988 fi
3989
3990 if $ar 2>&1 | grep -q Microsoft; then
3991     arflags="-nologo"
3992     ar_o='-out:$@'
3993 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3994     arflags="rq"
3995     ar_o='$@'
3996 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3997     arflags='-Xany -r -c'
3998     ar_o='$@'
3999 elif $ar 2>&1 | grep -q "\[D\] "; then
4000     arflags="rcD"
4001     ar_o='$@'
4002 else
4003     arflags="rc"
4004     ar_o='$@'
4005 fi
4006
4007 add_cflags $extra_cflags
4008 add_cxxflags $extra_cxxflags
4009 add_objcflags $extra_objcflags
4010 add_asflags $extra_cflags
4011
4012 if test -n "$sysroot"; then
4013     case "$cc_type" in
4014         gcc|llvm_gcc|clang)
4015             add_cppflags --sysroot="$sysroot"
4016             add_ldflags --sysroot="$sysroot"
4017 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4018             add_cppflags -isysroot "$sysroot"
4019             add_ldflags -isysroot "$sysroot"
4020         ;;
4021         tms470)
4022             add_cppflags -I"$sysinclude"
4023             add_ldflags  --sysroot="$sysroot"
4024         ;;
4025     esac
4026 fi
4027
4028 if test "$cpu" = host; then
4029     enabled cross_compile &&
4030         die "--cpu=host makes no sense when cross-compiling."
4031
4032     case "$cc_type" in
4033         gcc|llvm_gcc)
4034             check_native(){
4035                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4036                 sed -n "/cc1.*$1=/{
4037                             s/.*$1=\\([^ ]*\\).*/\\1/
4038                             p
4039                             q
4040                         }" $TMPE
4041             }
4042             cpu=$(check_native -march || check_native -mcpu)
4043         ;;
4044         clang)
4045             check_native(){
4046                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4047                 sed -n "/cc1.*-target-cpu /{
4048                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4049                             p
4050                             q
4051                         }" $TMPE
4052             }
4053             cpu=$(check_native -march)
4054         ;;
4055     esac
4056
4057     test "${cpu:-host}" = host &&
4058         die "--cpu=host not supported with compiler $cc"
4059 fi
4060
4061 # Deal with common $arch aliases
4062 case "$arch" in
4063     aarch64|arm64)
4064         arch="aarch64"
4065     ;;
4066     arm*|iPad*|iPhone*)
4067         arch="arm"
4068     ;;
4069     mips*|IP*)
4070         case "$arch" in
4071         *el)
4072             add_cppflags -EL
4073             add_ldflags -EL
4074         ;;
4075         *eb)
4076             add_cppflags -EB
4077             add_ldflags -EB
4078         ;;
4079         esac
4080         arch="mips"
4081     ;;
4082     parisc*|hppa*)
4083         arch="parisc"
4084     ;;
4085     "Power Macintosh"|ppc*|powerpc*)
4086         arch="ppc"
4087     ;;
4088     s390|s390x)
4089         arch="s390"
4090     ;;
4091     sh4|sh)
4092         arch="sh4"
4093     ;;
4094     sun4u|sparc*)
4095         arch="sparc"
4096     ;;
4097     tilegx|tile-gx)
4098         arch="tilegx"
4099     ;;
4100     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4101         arch="x86"
4102     ;;
4103 esac
4104
4105 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4106 enable $arch
4107
4108 # Add processor-specific flags
4109 if enabled aarch64; then
4110
4111     case $cpu in
4112         armv*)
4113             cpuflags="-march=$cpu"
4114         ;;
4115         *)
4116             cpuflags="-mcpu=$cpu"
4117         ;;
4118     esac
4119
4120 elif enabled alpha; then
4121
4122     cpuflags="-mcpu=$cpu"
4123
4124 elif enabled arm; then
4125
4126     check_arm_arch() {
4127         check_cpp_condition stddef.h \
4128             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4129             $cpuflags
4130     }
4131
4132     probe_arm_arch() {
4133         if   check_arm_arch 4;        then echo armv4;
4134         elif check_arm_arch 4T;       then echo armv4t;
4135         elif check_arm_arch 5;        then echo armv5;
4136         elif check_arm_arch 5E;       then echo armv5e;
4137         elif check_arm_arch 5T;       then echo armv5t;
4138         elif check_arm_arch 5TE;      then echo armv5te;
4139         elif check_arm_arch 5TEJ;     then echo armv5te;
4140         elif check_arm_arch 6;        then echo armv6;
4141         elif check_arm_arch 6J;       then echo armv6j;
4142         elif check_arm_arch 6K;       then echo armv6k;
4143         elif check_arm_arch 6Z;       then echo armv6z;
4144         elif check_arm_arch 6ZK;      then echo armv6zk;
4145         elif check_arm_arch 6T2;      then echo armv6t2;
4146         elif check_arm_arch 7;        then echo armv7;
4147         elif check_arm_arch 7A  7_A;  then echo armv7-a;
4148         elif check_arm_arch 7S;       then echo armv7-a;
4149         elif check_arm_arch 7R  7_R;  then echo armv7-r;
4150         elif check_arm_arch 7M  7_M;  then echo armv7-m;
4151         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
4152         elif check_arm_arch 8A  8_A;  then echo armv8-a;
4153         fi
4154     }
4155
4156     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4157
4158     case $cpu in
4159         armv*)
4160             cpuflags="-march=$cpu"
4161             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4162         ;;
4163         *)
4164             cpuflags="-mcpu=$cpu"
4165             case $cpu in
4166                 cortex-a*)                               subarch=armv7a  ;;
4167                 cortex-r*)                               subarch=armv7r  ;;
4168                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4169                 arm11*)                                  subarch=armv6   ;;
4170                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4171                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4172                 *)                             subarch=$(probe_arm_arch) ;;
4173             esac
4174         ;;
4175     esac
4176
4177     case "$subarch" in
4178         armv5t*)    enable fast_clz                ;;
4179         armv[6-8]*)
4180             enable fast_clz
4181             disabled fast_unaligned || enable fast_unaligned
4182             ;;
4183     esac
4184
4185 elif enabled avr32; then
4186
4187     case $cpu in
4188         ap7[02]0[0-2])
4189             subarch="avr32_ap"
4190             cpuflags="-mpart=$cpu"
4191         ;;
4192         ap)
4193             subarch="avr32_ap"
4194             cpuflags="-march=$cpu"
4195         ;;
4196         uc3[ab]*)
4197             subarch="avr32_uc"
4198             cpuflags="-mcpu=$cpu"
4199         ;;
4200         uc)
4201             subarch="avr32_uc"
4202             cpuflags="-march=$cpu"
4203         ;;
4204     esac
4205
4206 elif enabled bfin; then
4207
4208     cpuflags="-mcpu=$cpu"
4209
4210 elif enabled mips; then
4211
4212     cpuflags="-march=$cpu"
4213
4214     if [ "$cpu" != "generic" ]; then
4215         disable mips32r2
4216         disable mips32r5
4217         disable mips64r2
4218         disable mips32r6
4219         disable mips64r6
4220         disable loongson2
4221         disable loongson3
4222
4223         case $cpu in
4224             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4225                 enable mips32r2
4226                 disable msa
4227             ;;
4228             p5600|i6400)
4229                 disable mipsdsp
4230                 disable mipsdspr2
4231             ;;
4232             loongson*)
4233                 enable loongson2
4234                 enable loongson3
4235                 enable local_aligned_8 local_aligned_16 local_aligned_32
4236                 enable simd_align_16
4237                 enable fast_64bit
4238                 enable fast_clz
4239                 enable fast_cmov
4240                 enable fast_unaligned
4241                 disable aligned_stack
4242                 case $cpu in
4243                     loongson3*)
4244                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4245                     ;;
4246                     loongson2e)
4247                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4248                     ;;
4249                     loongson2f)
4250                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4251                     ;;
4252                 esac
4253             ;;
4254             *)
4255                 # Unknown CPU. Disable everything.
4256                 warn "unknown CPU. Disabling all MIPS optimizations."
4257                 disable mipsfpu
4258                 disable mipsdsp
4259                 disable mipsdspr2
4260                 disable msa
4261                 disable mmi
4262             ;;
4263         esac
4264
4265         case $cpu in
4266             24kc)
4267                 disable mipsfpu
4268                 disable mipsdsp
4269                 disable mipsdspr2
4270             ;;
4271             24kf*)
4272                 disable mipsdsp
4273                 disable mipsdspr2
4274             ;;
4275             24kec|34kc|1004kc)
4276                 disable mipsfpu
4277                 disable mipsdspr2
4278             ;;
4279             24kef*|34kf*|1004kf*)
4280                 disable mipsdspr2
4281             ;;
4282             74kc)
4283                 disable mipsfpu
4284             ;;
4285             p5600)
4286                 enable mips32r5
4287                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4288             ;;
4289             i6400)
4290                 enable mips64r6
4291                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4292             ;;
4293         esac
4294     else
4295         # We do not disable anything. Is up to the user to disable the unwanted features.
4296         warn 'generic cpu selected'
4297     fi
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         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5111         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5112         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5113     else
5114         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5115         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5116         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5117         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5118     fi
5119
5120     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5121     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5122     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5123     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5124     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5125
5126 elif enabled parisc; then
5127
5128     if enabled gcc; then
5129         case $($cc -dumpversion) in
5130             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5131         esac
5132     fi
5133
5134 elif enabled ppc; then
5135
5136     enable local_aligned_8 local_aligned_16 local_aligned_32
5137
5138     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5139     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5140     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5141     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5142
5143     # AltiVec flags: The FSF version of GCC differs from the Apple version
5144     if enabled altivec; then
5145         check_cflags -maltivec -mabi=altivec &&
5146         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5147         check_cflags -faltivec
5148
5149         # check if our compiler supports Motorola AltiVec C API
5150         check_cc <<EOF || disable altivec
5151 $inc_altivec_h
5152 int main(void) {
5153     vector signed int v1 = (vector signed int) { 0 };
5154     vector signed int v2 = (vector signed int) { 1 };
5155     v1 = vec_add(v1, v2);
5156     return 0;
5157 }
5158 EOF
5159
5160         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5161     fi
5162
5163     if enabled vsx; then
5164         check_cflags -mvsx &&
5165         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5166     fi
5167
5168     if enabled power8; then
5169         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5170     fi
5171
5172 elif enabled x86; then
5173
5174     check_builtin rdtsc    intrin.h   "__rdtsc()"
5175     check_builtin mm_empty mmintrin.h "_mm_empty()"
5176
5177     enable local_aligned_8 local_aligned_16 local_aligned_32
5178
5179     # check whether EBP is available on x86
5180     # As 'i' is stored on the stack, this program will crash
5181     # if the base pointer is used to access it because the
5182     # base pointer is cleared in the inline assembly code.
5183     check_exec_crash <<EOF && enable ebp_available
5184 volatile int i=0;
5185 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5186 return i;
5187 EOF
5188
5189     # check whether EBX is available on x86
5190     check_inline_asm ebx_available '""::"b"(0)' &&
5191         check_inline_asm ebx_available '"":::"%ebx"'
5192
5193     # check whether xmm clobbers are supported
5194     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5195
5196     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5197         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5198
5199     # check whether binutils is new enough to compile SSSE3/MMXEXT
5200     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5201     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5202
5203     if ! disabled_any asm mmx yasm; then
5204         if check_cmd $yasmexe --version; then
5205             enabled x86_64 && yasm_extra="-m amd64"
5206             yasm_debug="-g dwarf2"
5207         elif check_cmd nasm -v; then
5208             yasmexe=nasm
5209             yasm_debug="-g -F dwarf"
5210             if enabled x86_64; then
5211                 case "$objformat" in
5212                     elf)   objformat=elf64 ;;
5213                     win32) objformat=win64 ;;
5214                 esac
5215             fi
5216         fi
5217
5218         YASMFLAGS="-f $objformat $yasm_extra"
5219         enabled pic               && append YASMFLAGS "-DPIC"
5220         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5221         case "$objformat" in
5222             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5223         esac
5224
5225         check_yasm "movbe ecx, [5]" && enable yasm ||
5226             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5227         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5228         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5229         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5230         check_yasm "CPU amdnop" || disable cpunop
5231     fi
5232
5233     case "$cpu" in
5234         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5235             disable fast_clz
5236         ;;
5237     esac
5238
5239 fi
5240
5241 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5242
5243 check_ldflags -Wl,--as-needed
5244 check_ldflags -Wl,-z,noexecstack
5245
5246 if check_func dlopen; then
5247     ldl=
5248 elif check_func dlopen -ldl; then
5249     ldl=-ldl
5250 fi
5251
5252 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5253 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5254 frei0r_filter_extralibs='$ldl'
5255 frei0r_src_filter_extralibs='$ldl'
5256 ladspa_filter_extralibs='$ldl'
5257 nvenc_encoder_extralibs='$ldl'
5258
5259 if ! disabled network; then
5260     check_func getaddrinfo $network_extralibs
5261     check_func inet_aton $network_extralibs
5262
5263     check_type netdb.h "struct addrinfo"
5264     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5265     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5266     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5267     check_type poll.h "struct pollfd"
5268     check_type netinet/sctp.h "struct sctp_event_subscribe"
5269     check_struct "sys/socket.h" "struct msghdr" msg_flags
5270     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5271     check_type netinet/in.h "struct sockaddr_in6"
5272     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5273     check_type "sys/types.h sys/socket.h" socklen_t
5274
5275     # Prefer arpa/inet.h over winsock2
5276     if check_header arpa/inet.h ; then
5277         check_func closesocket
5278     elif check_header winsock2.h ; then
5279         check_func_headers winsock2.h closesocket -lws2 &&
5280             network_extralibs="-lws2" ||
5281         { check_func_headers winsock2.h closesocket -lws2_32 &&
5282             network_extralibs="-lws2_32"; } || disable winsock2_h network
5283         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5284
5285         check_type ws2tcpip.h socklen_t
5286         check_type ws2tcpip.h "struct addrinfo"
5287         check_type ws2tcpip.h "struct group_source_req"
5288         check_type ws2tcpip.h "struct ip_mreq_source"
5289         check_type ws2tcpip.h "struct ipv6_mreq"
5290         check_type winsock2.h "struct pollfd"
5291         check_struct winsock2.h "struct sockaddr" sa_len
5292         check_type ws2tcpip.h "struct sockaddr_in6"
5293         check_type ws2tcpip.h "struct sockaddr_storage"
5294     else
5295         disable network
5296     fi
5297 fi
5298
5299 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5300 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
5301 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5302 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5303 check_builtin sarestart signal.h "SA_RESTART"
5304 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5305 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5306 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5307 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5308
5309 case "$custom_allocator" in
5310     jemalloc)
5311         # jemalloc by default does not use a prefix
5312         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5313     ;;
5314     tcmalloc)
5315         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5316         malloc_prefix=tc_
5317     ;;
5318 esac
5319
5320 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5321 check_func  ${malloc_prefix}memalign            && enable memalign
5322 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5323
5324 check_func  access
5325 check_func  arc4random
5326 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5327 check_func  fcntl
5328 check_func  fork
5329 check_func  gethrtime
5330 check_func  getopt
5331 check_func  getrusage
5332 check_func  gettimeofday
5333 check_func  isatty
5334 check_func  mach_absolute_time
5335 check_func  mkstemp
5336 check_func  mmap
5337 check_func  mprotect
5338 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5339 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5340 check_func  sched_getaffinity
5341 check_func  setrlimit
5342 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5343 check_func  strerror_r
5344 check_func  sysconf
5345 check_func  sysctl
5346 check_func  usleep
5347
5348 check_func_headers conio.h kbhit
5349 check_func_headers io.h setmode
5350 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5351 check_func_headers stdlib.h getenv
5352 check_func_headers sys/stat.h lstat
5353
5354 check_func_headers windows.h CoTaskMemFree -lole32
5355 check_func_headers windows.h GetProcessAffinityMask
5356 check_func_headers windows.h GetProcessTimes
5357 check_func_headers windows.h GetSystemTimeAsFileTime
5358 check_func_headers windows.h MapViewOfFile
5359 check_func_headers windows.h PeekNamedPipe
5360 check_func_headers windows.h SetConsoleTextAttribute
5361 check_func_headers windows.h SetConsoleCtrlHandler
5362 check_func_headers windows.h Sleep
5363 check_func_headers windows.h VirtualAlloc
5364 check_struct windows.h "CONDITION_VARIABLE" Ptr
5365 check_func_headers glob.h glob
5366 enabled xlib &&
5367     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5368
5369 check_header direct.h
5370 check_header dirent.h
5371 check_header dlfcn.h
5372 check_header d3d11.h
5373 check_header dxva.h
5374 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5375 check_header io.h
5376 check_header libcrystalhd/libcrystalhd_if.h
5377 check_header mach/mach_time.h
5378 check_header malloc.h
5379 check_header net/udplite.h
5380 check_header poll.h
5381 check_header sys/mman.h
5382 check_header sys/param.h
5383 check_header sys/resource.h
5384 check_header sys/select.h
5385 check_header sys/time.h
5386 check_header sys/un.h
5387 check_header termios.h
5388 check_header unistd.h
5389 check_header valgrind/valgrind.h
5390 check_header vdpau/vdpau.h
5391 check_header vdpau/vdpau_x11.h
5392 check_header VideoDecodeAcceleration/VDADecoder.h
5393 check_header VideoToolbox/VideoToolbox.h
5394 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5395 check_header windows.h
5396 check_header X11/extensions/XvMClib.h
5397 check_header asm/types.h
5398
5399 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
5400 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
5401 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
5402 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5403
5404 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5405
5406 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5407 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5408 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5409 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5410 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5411
5412 check_type "va/va.h" "VAPictureParameterBufferHEVC"
5413 check_type "va/va.h" "VADecPictureParameterBufferVP9"
5414
5415 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5416
5417 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5418
5419 if ! disabled w32threads && ! enabled pthreads; then
5420     check_func_headers "windows.h process.h" _beginthreadex &&
5421         enable w32threads || disable w32threads
5422     if ! enabled w32threads && enabled winrt; then
5423         check_func_headers "windows.h" CreateThread &&
5424             enable w32threads || disable w32threads
5425     fi
5426 fi
5427
5428 # check for some common methods of building with pthread support
5429 # do this before the optional library checks as some of them require pthreads
5430 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5431     enable pthreads
5432     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5433         add_cflags -pthread
5434         add_extralibs -pthread
5435     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5436         add_cflags -pthreads
5437         add_extralibs -pthreads
5438     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5439         add_cflags -ldl -pthread
5440         add_extralibs -ldl -pthread
5441     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5442         add_extralibs -lpthreadGC2
5443     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5444         :
5445     elif ! check_func pthread_join && ! check_func pthread_create; then
5446         disable pthreads
5447     fi
5448     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5449 fi
5450
5451
5452 if enabled pthreads; then
5453   check_func pthread_cancel
5454 fi
5455
5456 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
5457 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
5458 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
5459
5460 check_lib math.h sin -lm && LIBM="-lm"
5461 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5462
5463 atan2f_args=2
5464 copysign_args=2
5465 hypot_args=2
5466 ldexpf_args=2
5467 powf_args=2
5468
5469 for func in $MATH_FUNCS; do
5470     eval check_mathfunc $func \${${func}_args:-1}
5471 done
5472
5473 for func in $COMPLEX_FUNCS; do
5474     eval check_complexfunc $func \${${func}_args:-1}
5475 done
5476
5477 # these are off by default, so fail if requested and not available
5478 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5479 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5480                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5481 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
5482                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
5483                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
5484 enabled cuda              && check_lib cuda.h cuInit -lcuda
5485 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5486 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
5487 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5488 enabled gmp               && require2 gmp gmp.h mpz_export -lgmp
5489 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5490 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
5491                                check_lib2 "dlfcn.h" dlopen -ldl; }
5492 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5493 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5494 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5495 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5496 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5497 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5498                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5499                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5500 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5501 enabled libdcadec         && require_pkg_config "dcadec >= 0.1.0" libdcadec/dca_context.h dcadec_context_create
5502 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
5503 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5504                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5505                                  warn "using libfdk without pkg-config"; } }
5506 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"
5507 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5508 enabled fontconfig        && enable libfontconfig
5509 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5510 enabled libfreetype       && require_libfreetype
5511 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5512 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5513 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5514                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5515                                done || die "ERROR: libgsm not found"; }
5516 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5517 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5518 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5519 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5520 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5521 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5522 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5523 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5524 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5525                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5526                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5527                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5528 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5529 enabled libopenjpeg       && { check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC ||
5530                                check_lib openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC ||
5531                                check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5532                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5533                                die "ERROR: libopenjpeg not found"; }
5534 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5535 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5536 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5537 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5538 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5539 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5540 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5541                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5542 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5543 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5544 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5545 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5546 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5547 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5548 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5549                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5550                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5551 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
5552 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5553 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5554 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5555 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5556
5557 enabled libvpx            && {
5558     enabled libvpx_vp8_decoder && {
5559         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5560             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5561                 die "ERROR: libvpx decoder version must be >=0.9.1";
5562     }
5563     enabled libvpx_vp8_encoder && {
5564         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5565             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5566                 die "ERROR: libvpx encoder version must be >=0.9.7";
5567     }
5568     enabled libvpx_vp9_decoder && {
5569         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5570             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5571                 disable libvpx_vp9_decoder;
5572     }
5573     enabled libvpx_vp9_encoder && {
5574         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5575             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5576                 disable libvpx_vp9_encoder;
5577     }
5578     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5579         die "libvpx enabled but no supported decoders found"
5580     fi
5581 }
5582
5583 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5584 enabled libwebp           && {
5585     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5586     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5587 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5588                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5589                                  warn "using libx264 without pkg-config"; } } &&
5590                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5591                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5592                              { check_cpp_condition x264.h "X264_MPEG2" &&
5593                                enable libx262; }
5594 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5595                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5596                                die "ERROR: libx265 version must be >= 68."; }
5597 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5598 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5599 enabled libzimg           && require_pkg_config zimg zimg.h zimg_get_api_version
5600 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5601 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5602                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5603                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5604 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5605 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5606                                 { ! enabled cross_compile && {
5607                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5608                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5609                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5610                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5611                                die "ERROR: mmal not found"; }
5612 enabled mmal &&
5613     (check_code cc interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS" ||
5614      die "ERROR: mmal firmware headers too old")
5615
5616 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5617 enabled nvenc             && { check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."; } &&
5618                              { check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6" ||
5619                                die "ERROR: NVENC API version 5 or older is not supported"; } &&
5620                              { [ $target_os != cygwin ] || die "ERROR: NVENC is not supported on Cygwin currently."; }
5621 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5622                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5623                                die "ERROR: openal not found"; } &&
5624                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5625                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5626 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5627                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5628                                die "ERROR: opencl not found"; } &&
5629                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5630                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5631                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5632 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5633                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5634                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5635                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5636                                die "ERROR: opengl not found."
5637                              }
5638 enabled openssl           && { use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5639                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5640                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5641                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5642                                die "ERROR: openssl not found"; }
5643 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5644
5645 # libdc1394 check
5646 if enabled libdc1394; then
5647     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5648         enable libdc1394_2; } ||
5649     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5650         enable libdc1394_1; } ||
5651     die "ERROR: No version of libdc1394 found "
5652 fi
5653
5654 if enabled gcrypt; then
5655     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5656     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5657         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5658         gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
5659         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
5660             die "ERROR: gcrypt not found"
5661         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
5662     else
5663         require2 gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5664     fi
5665 fi
5666
5667 if ! disabled sdl; then
5668     SDL_CONFIG="${cross_prefix}sdl-config"
5669     if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
5670         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5671         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5672         enable sdl
5673     else
5674         if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
5675             sdl_cflags=$("${SDL_CONFIG}" --cflags)
5676             sdl_libs=$("${SDL_CONFIG}" --libs)
5677             check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
5678             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5679             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5680             enable sdl
5681         elif enabled sdl ; then
5682             die "ERROR: SDL not found"
5683         else
5684             disable sdl
5685         fi
5686     fi
5687     if test $target_os = "mingw32"; then
5688         sdl_libs="$sdl_libs -mconsole"
5689     fi
5690 fi
5691 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
5692
5693 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5694     check_lib2 "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5695     enable securetransport; }
5696
5697 disabled schannel || { check_func_headers "windows.h Security.h" InitializeSecurityContext -DSECURITY_WIN32 -lSecur32 &&
5698                        enable schannel && add_extralibs -lSecur32; }
5699
5700 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5701 enabled makeinfo \
5702     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5703     && enable makeinfo_html || disable makeinfo_html
5704 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5705 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5706 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5707 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5708
5709 check_header linux/fb.h
5710 check_header linux/videodev.h
5711 check_header linux/videodev2.h
5712 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5713
5714 check_header sys/videoio.h
5715 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5716
5717 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5718 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5719 # w32api 3.12 had it defined wrong
5720 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5721
5722 check_type "dshow.h" IBaseFilter
5723
5724 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5725 { check_header dev/bktr/ioctl_meteor.h &&
5726   check_header dev/bktr/ioctl_bt848.h; } ||
5727 { check_header machine/ioctl_meteor.h &&
5728   check_header machine/ioctl_bt848.h; } ||
5729 { check_header dev/video/meteor/ioctl_meteor.h &&
5730   check_header dev/video/bktr/ioctl_bt848.h; } ||
5731 check_header dev/ic/bt8xx.h
5732
5733 check_header sndio.h
5734 if check_struct sys/soundcard.h audio_buf_info bytes; then
5735     enable_safe sys/soundcard.h
5736 else
5737     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5738     #include <sys/soundcard.h>
5739     audio_buf_info abc;
5740 EOF
5741 fi
5742 check_header soundcard.h
5743
5744 enabled_any alsa_indev alsa_outdev &&
5745     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5746
5747 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
5748     check_func jack_port_get_latency_range -ljack
5749
5750 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
5751
5752 if enabled libcdio; then
5753     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5754     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5755     die "ERROR: No usable libcdio/cdparanoia found"
5756 fi
5757
5758 enabled xlib &&
5759     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
5760
5761 if ! disabled libxcb; then
5762     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
5763         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
5764     } && disable x11grab && enable libxcb
5765
5766 if enabled libxcb; then
5767     disabled libxcb_shm || {
5768         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
5769             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
5770         } && check_header sys/shm.h && enable libxcb_shm; }
5771
5772     disabled libxcb_xfixes || {
5773         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
5774             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
5775         } && enable libxcb_xfixes; }
5776
5777     disabled libxcb_shape || {
5778         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
5779             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
5780         } && enable libxcb_shape; }
5781
5782     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
5783     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
5784 fi
5785 fi
5786
5787 if enabled x11grab; then
5788     enabled xlib || die "ERROR: Xlib not found"
5789     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
5790     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
5791 fi
5792
5793 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
5794
5795 enabled dxva2api_h &&
5796     check_cc <<EOF && enable dxva2api_cobj
5797 #define _WIN32_WINNT 0x0600
5798 #define COBJMACROS
5799 #include <windows.h>
5800 #include <d3d9.h>
5801 #include <dxva2api.h>
5802 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
5803 EOF
5804
5805 enabled vaapi &&
5806     check_lib va/va.h vaInitialize -lva ||
5807     disable vaapi
5808
5809 enabled vaapi && enabled xlib &&
5810     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
5811     enable vaapi_x11
5812
5813 enabled vdpau &&
5814     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
5815     disable vdpau
5816
5817 enabled vdpau && enabled xlib &&
5818     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
5819     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
5820     enable vdpau_x11
5821
5822 # Funny iconv installations are not unusual, so check it after all flags have been set
5823 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
5824
5825 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
5826
5827 # add some useful compiler flags if supported
5828 check_cflags -Wdeclaration-after-statement
5829 check_cflags -Wall
5830 check_cflags -Wdisabled-optimization
5831 check_cflags -Wpointer-arith
5832 check_cflags -Wredundant-decls
5833 check_cflags -Wwrite-strings
5834 check_cflags -Wtype-limits
5835 check_cflags -Wundef
5836 check_cflags -Wmissing-prototypes
5837 check_cflags -Wno-pointer-to-int-cast
5838 check_cflags -Wstrict-prototypes
5839 check_cflags -Wempty-body
5840 enabled extra_warnings && check_cflags -Winline
5841 enabled extra_warnings && check_cflags -Wcast-qual
5842
5843 check_disable_warning(){
5844     warning_flag=-W${1#-Wno-}
5845     test_cflags $warning_flag && add_cflags $1
5846 }
5847
5848 check_disable_warning -Wno-parentheses
5849 check_disable_warning -Wno-switch
5850 check_disable_warning -Wno-format-zero-length
5851 check_disable_warning -Wno-pointer-sign
5852 check_disable_warning -Wno-unused-const-variable
5853
5854 # add some linker flags
5855 check_ldflags -Wl,--warn-common
5856 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
5857 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
5858 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
5859 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
5860
5861 # add some strip flags
5862 # -wN '..@*' is more selective than -x, but not available everywhere.
5863 check_stripflags -wN \'..@*\' || check_stripflags -x
5864
5865 enabled neon_clobber_test &&
5866     check_ldflags -Wl,--wrap,avcodec_open2              \
5867                   -Wl,--wrap,avcodec_decode_audio4      \
5868                   -Wl,--wrap,avcodec_decode_video2      \
5869                   -Wl,--wrap,avcodec_decode_subtitle2   \
5870                   -Wl,--wrap,avcodec_encode_audio2      \
5871                   -Wl,--wrap,avcodec_encode_video2      \
5872                   -Wl,--wrap,avcodec_encode_subtitle    \
5873                   -Wl,--wrap,swr_convert                \
5874                   -Wl,--wrap,avresample_convert ||
5875     disable neon_clobber_test
5876
5877 enabled xmm_clobber_test &&
5878     check_ldflags -Wl,--wrap,avcodec_open2              \
5879                   -Wl,--wrap,avcodec_decode_audio4      \
5880                   -Wl,--wrap,avcodec_decode_video2      \
5881                   -Wl,--wrap,avcodec_decode_subtitle2   \
5882                   -Wl,--wrap,avcodec_encode_audio2      \
5883                   -Wl,--wrap,avcodec_encode_video2      \
5884                   -Wl,--wrap,avcodec_encode_subtitle    \
5885                   -Wl,--wrap,swr_convert                \
5886                   -Wl,--wrap,avresample_convert         \
5887                   -Wl,--wrap,sws_scale ||
5888     disable xmm_clobber_test
5889
5890 echo "X { local: *; };" > $TMPV
5891 if test_ldflags -Wl,--version-script,$TMPV; then
5892     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
5893 elif test_ldflags -Wl,-M,$TMPV; then
5894     append SHFLAGS '-Wl,-M,\$(SUBDIR)lib\$(NAME).ver-sol2'
5895 fi
5896
5897 check_cc <<EOF && enable symver_asm_label
5898 void ff_foo(void) __asm__ ("av_foo@VERSION");
5899 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
5900 EOF
5901     check_cc <<EOF && enable symver_gnu_asm
5902 __asm__(".symver ff_foo,av_foo@VERSION");
5903 void ff_foo(void) {}
5904 EOF
5905
5906 if [ -z "$optflags" ]; then
5907     if enabled small; then
5908         optflags=$cflags_size
5909     elif enabled optimizations; then
5910         optflags=$cflags_speed
5911     else
5912         optflags=$cflags_noopt
5913     fi
5914 fi
5915
5916 check_optflags(){
5917     check_cflags "$@"
5918     enabled lto && check_ldflags "$@"
5919 }
5920
5921
5922 if enabled lto; then
5923     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
5924     check_cflags  -flto
5925     check_ldflags -flto $cpuflags
5926     disable inline_asm_direct_symbol_refs
5927 fi
5928
5929 check_optflags $optflags
5930 check_optflags -fno-math-errno
5931 check_optflags -fno-signed-zeros
5932
5933 enabled ftrapv && check_cflags -ftrapv
5934
5935 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
5936 int x;
5937 EOF
5938
5939
5940 if enabled icc; then
5941     # Just warnings, no remarks
5942     check_cflags -w1
5943     # -wd: Disable following warnings
5944     # 144, 167, 556: -Wno-pointer-sign
5945     # 188: enumerated type mixed with another type
5946     # 1292: attribute "foo" ignored
5947     # 1419: external declaration in primary source file
5948     # 10006: ignoring unknown option -fno-signed-zeros
5949     # 10148: ignoring unknown option -Wno-parentheses
5950     # 10156: ignoring option '-W'; no argument required
5951     # 13200: No EMMS instruction before call to function
5952     # 13203: No EMMS instruction before return from function
5953     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
5954     # 11030: Warning unknown option --as-needed
5955     # 10156: ignoring option '-export'; no argument required
5956     check_ldflags -wd10156,11030
5957     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
5958     enable ebp_available
5959     # The test above does not test linking
5960     enabled lto && disable symver_asm_label
5961     if enabled x86_32; then
5962         icc_version=$($cc -dumpversion)
5963         test ${icc_version%%.*} -ge 11 &&
5964             check_cflags -falign-stack=maintain-16-byte ||
5965             disable aligned_stack
5966     fi
5967 elif enabled ccc; then
5968     # disable some annoying warnings
5969     add_cflags -msg_disable bitnotint
5970     add_cflags -msg_disable mixfuncvoid
5971     add_cflags -msg_disable nonstandcast
5972     add_cflags -msg_disable unsupieee
5973 elif enabled gcc; then
5974     case $gcc_basever in
5975         4.9*) enabled x86 || check_optflags -fno-tree-vectorize ;;
5976         4.*)                 check_optflags -fno-tree-vectorize ;;
5977         *)    enabled x86 || check_optflags -fno-tree-vectorize ;;
5978     esac
5979     check_cflags -Werror=format-security
5980     check_cflags -Werror=implicit-function-declaration
5981     check_cflags -Werror=missing-prototypes
5982     check_cflags -Werror=return-type
5983     check_cflags -Werror=vla
5984     check_cflags -Wformat
5985     check_cflags -fdiagnostics-color=auto
5986     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
5987 elif enabled llvm_gcc; then
5988     check_cflags -mllvm -stack-alignment=16
5989 elif enabled clang; then
5990     check_cflags -mllvm -stack-alignment=16
5991     check_cflags -Qunused-arguments
5992     check_cflags -Werror=implicit-function-declaration
5993     check_cflags -Werror=missing-prototypes
5994     check_cflags -Werror=return-type
5995 elif enabled cparser; then
5996     add_cflags -Wno-missing-variable-declarations
5997     add_cflags -Wno-empty-statement
5998 elif enabled armcc; then
5999     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6000     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6001     # 2523: use of inline assembly is deprecated
6002     add_cflags -W${armcc_opt},--diag_suppress=2523
6003     add_cflags -W${armcc_opt},--diag_suppress=1207
6004     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6005     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6006     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6007     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6008 elif enabled tms470; then
6009     add_cflags -pds=824 -pds=837
6010     disable inline_asm
6011 elif enabled pathscale; then
6012     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6013 elif enabled_any msvc icl; then
6014     enabled x86_32 && disable aligned_stack
6015     enabled_all x86_32 debug && add_cflags -Oy-
6016     enabled debug && add_ldflags -debug
6017     enable pragma_deprecated
6018     if enabled icl; then
6019         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6020         # (correctly) on icl 13.x.
6021         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6022             add_cflags -Qansi-alias
6023         # Some inline asm is not compilable in debug
6024         if enabled debug; then
6025             disable ebp_available
6026             disable ebx_available
6027         fi
6028     fi
6029     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6030     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6031     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6032     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6033     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6034     # MSVC 2013 and newer can handle it fine.
6035     # If this declspec fails, force including stdlib.h before the restrict redefinition
6036     # happens in config.h.
6037     if [ $_restrict != restrict ]; then
6038         check_cc <<EOF || add_cflags -FIstdlib.h
6039 __declspec($_restrict) void* foo(int);
6040 EOF
6041     fi
6042     check_func strtoll || add_cflags -Dstrtoll=_strtoi64
6043 fi
6044
6045 for pfx in "" host_; do
6046     varname=${pfx%_}cc_type
6047     eval "type=\$$varname"
6048     if [ $type = "msvc" ]; then
6049         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6050 static inline int foo(int a) { return a; }
6051 EOF
6052     fi
6053 done
6054
6055 case $as_type in
6056     clang)
6057         add_asflags -Qunused-arguments
6058     ;;
6059 esac
6060
6061 case $ld_type in
6062     clang)
6063         check_ldflags -Qunused-arguments
6064     ;;
6065 esac
6066
6067 case $target_os in
6068     osf1)
6069         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6070     ;;
6071     plan9)
6072         add_cppflags -Dmain=plan9_main
6073     ;;
6074 esac
6075
6076 enable frame_thread_encoder
6077
6078 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6079
6080 check_deps $CONFIG_LIST       \
6081            $CONFIG_EXTRA      \
6082            $HAVE_LIST         \
6083            $ALL_COMPONENTS    \
6084
6085 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"
6086
6087
6088 if test $target_os = "haiku"; then
6089     disable memalign
6090     disable posix_memalign
6091 fi
6092
6093 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
6094     prepend ffmpeg_libs $($ldflags_filter "-lole32" "-luser32") &&
6095     enable dxva2_lib
6096
6097 ! enabled_any memalign posix_memalign aligned_malloc &&
6098     enabled simd_align_16 && enable memalign_hack
6099
6100 # add_dep lib dep
6101 # -> enable ${lib}_deps_${dep}
6102 # -> add $dep to ${lib}_deps only once
6103 add_dep() {
6104     lib=$1
6105     dep=$2
6106     enabled "${lib}_deps_${dep}" && return 0
6107     enable  "${lib}_deps_${dep}"
6108     prepend "${lib}_deps" $dep
6109 }
6110
6111 # merge deps lib components
6112 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6113 merge_deps() {
6114     lib=$1
6115     shift
6116     for comp in $*; do
6117         enabled $comp || continue
6118         eval "dep=\"\$${comp}_deps\""
6119         for d in $dep; do
6120             add_dep $lib $d
6121         done
6122     done
6123 }
6124
6125 merge_deps libavfilter $FILTER_LIST
6126
6127 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6128
6129 for thread in $THREADS_LIST; do
6130     if enabled $thread; then
6131         test -n "$thread_type" &&
6132             die "ERROR: Only one thread type must be selected." ||
6133             thread_type="$thread"
6134     fi
6135 done
6136
6137 enabled zlib && add_cppflags -DZLIB_CONST
6138
6139 # conditional library dependencies, in linking order
6140 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6141 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6142 enabled aresample_filter    && prepend avfilter_deps "swresample"
6143 enabled asyncts_filter      && prepend avfilter_deps "avresample"
6144 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6145 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6146 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6147 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6148 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6149 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6150 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6151 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6152 enabled pan_filter          && prepend avfilter_deps "swresample"
6153 enabled pp_filter           && prepend avfilter_deps "postproc"
6154 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6155 enabled resample_filter && prepend avfilter_deps "avresample"
6156 enabled sab_filter          && prepend avfilter_deps "swscale"
6157 enabled scale_filter    && prepend avfilter_deps "swscale"
6158 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6159 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6160 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6161 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6162 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6163 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6164 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6165 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6166 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6167
6168 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6169
6170 enabled opus_decoder    && prepend avcodec_deps "swresample"
6171
6172 expand_deps(){
6173     lib_deps=${1}_deps
6174     eval "deps=\$$lib_deps"
6175     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6176     unique $lib_deps
6177 }
6178
6179 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6180 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6181
6182 map 'expand_deps $v' $LIBRARY_LIST
6183
6184 echo "install prefix            $prefix"
6185 echo "source path               $source_path"
6186 echo "C compiler                $cc"
6187 echo "C library                 $libc_type"
6188 if test "$host_cc" != "$cc"; then
6189     echo "host C compiler           $host_cc"
6190     echo "host C library            $host_libc_type"
6191 fi
6192 echo "ARCH                      $arch ($cpu)"
6193 if test "$build_suffix" != ""; then
6194     echo "build suffix              $build_suffix"
6195 fi
6196 if test "$progs_suffix" != ""; then
6197     echo "progs suffix              $progs_suffix"
6198 fi
6199 if test "$extra_version" != ""; then
6200     echo "version string suffix     $extra_version"
6201 fi
6202 echo "big-endian                ${bigendian-no}"
6203 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6204 if enabled x86; then
6205     echo "${yasmexe}                      ${yasm-no}"
6206     echo "MMX enabled               ${mmx-no}"
6207     echo "MMXEXT enabled            ${mmxext-no}"
6208     echo "3DNow! enabled            ${amd3dnow-no}"
6209     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6210     echo "SSE enabled               ${sse-no}"
6211     echo "SSSE3 enabled             ${ssse3-no}"
6212     echo "AESNI enabled             ${aesni-no}"
6213     echo "AVX enabled               ${avx-no}"
6214     echo "XOP enabled               ${xop-no}"
6215     echo "FMA3 enabled              ${fma3-no}"
6216     echo "FMA4 enabled              ${fma4-no}"
6217     echo "i686 features enabled     ${i686-no}"
6218     echo "CMOV is fast              ${fast_cmov-no}"
6219     echo "EBX available             ${ebx_available-no}"
6220     echo "EBP available             ${ebp_available-no}"
6221 fi
6222 if enabled aarch64; then
6223     echo "NEON enabled              ${neon-no}"
6224     echo "VFP enabled               ${vfp-no}"
6225 fi
6226 if enabled arm; then
6227     echo "ARMv5TE enabled           ${armv5te-no}"
6228     echo "ARMv6 enabled             ${armv6-no}"
6229     echo "ARMv6T2 enabled           ${armv6t2-no}"
6230     echo "VFP enabled               ${vfp-no}"
6231     echo "NEON enabled              ${neon-no}"
6232     echo "THUMB enabled             ${thumb-no}"
6233 fi
6234 if enabled mips; then
6235     echo "MIPS FPU enabled          ${mipsfpu-no}"
6236     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6237     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6238     echo "MIPS MSA enabled          ${msa-no}"
6239     echo "LOONGSON MMI enabled      ${mmi-no}"
6240 fi
6241 if enabled ppc; then
6242     echo "AltiVec enabled           ${altivec-no}"
6243     echo "VSX enabled               ${vsx-no}"
6244     echo "POWER8 enabled            ${power8-no}"
6245     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6246     echo "dcbzl available           ${dcbzl-no}"
6247 fi
6248 echo "debug symbols             ${debug-no}"
6249 echo "strip symbols             ${stripping-no}"
6250 echo "optimize for size         ${small-no}"
6251 echo "optimizations             ${optimizations-no}"
6252 echo "static                    ${static-no}"
6253 echo "shared                    ${shared-no}"
6254 echo "postprocessing support    ${postproc-no}"
6255 echo "new filter support        ${avfilter-no}"
6256 echo "network support           ${network-no}"
6257 echo "threading support         ${thread_type-no}"
6258 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6259 echo "SDL support               ${sdl-no}"
6260 echo "opencl enabled            ${opencl-no}"
6261 echo "JNI support               ${jni-no}"
6262 echo "texi2html enabled         ${texi2html-no}"
6263 echo "perl enabled              ${perl-no}"
6264 echo "pod2man enabled           ${pod2man-no}"
6265 echo "makeinfo enabled          ${makeinfo-no}"
6266 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6267 test -n "$random_seed" &&
6268     echo "random seed               ${random_seed}"
6269 echo
6270
6271 echo "Enabled programs:"
6272 print_enabled '' $PROGRAM_LIST | print_in_columns
6273 echo
6274
6275 echo "External libraries:"
6276 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6277 echo
6278
6279 echo "Libraries:"
6280 print_enabled '' $LIBRARY_LIST | print_in_columns
6281 echo
6282
6283 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6284     echo "Enabled ${type}s:"
6285     eval list=\$$(toupper $type)_LIST
6286     print_enabled '_*' $list | print_in_columns
6287     echo
6288 done
6289
6290 license="LGPL version 2.1 or later"
6291 if enabled nonfree; then
6292     license="nonfree and unredistributable"
6293 elif enabled gplv3; then
6294     license="GPL version 3 or later"
6295 elif enabled lgplv3; then
6296     license="LGPL version 3 or later"
6297 elif enabled gpl; then
6298     license="GPL version 2 or later"
6299 fi
6300
6301 echo "License: $license"
6302
6303 echo "Creating config.mak, config.h, and doc/config.texi..."
6304
6305 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6306
6307 enabled stripping || strip="echo skipping strip"
6308
6309 config_files="$TMPH config.mak doc/config.texi"
6310
6311 cat > config.mak <<EOF
6312 # Automatically generated by configure - do not modify!
6313 ifndef FFMPEG_CONFIG_MAK
6314 FFMPEG_CONFIG_MAK=1
6315 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6316 prefix=$prefix
6317 LIBDIR=\$(DESTDIR)$libdir
6318 SHLIBDIR=\$(DESTDIR)$shlibdir
6319 INCDIR=\$(DESTDIR)$incdir
6320 BINDIR=\$(DESTDIR)$bindir
6321 DATADIR=\$(DESTDIR)$datadir
6322 DOCDIR=\$(DESTDIR)$docdir
6323 MANDIR=\$(DESTDIR)$mandir
6324 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6325 INSTALL_NAME_DIR=$install_name_dir
6326 SRC_PATH=$source_path
6327 SRC_LINK=$source_link
6328 ifndef MAIN_MAKEFILE
6329 SRC_PATH:=\$(SRC_PATH:.%=..%)
6330 endif
6331 CC_IDENT=$cc_ident
6332 ARCH=$arch
6333 INTRINSICS=$intrinsics
6334 CC=$cc
6335 CXX=$cxx
6336 AS=$as
6337 OBJCC=$objcc
6338 LD=$ld
6339 DEPCC=$dep_cc
6340 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6341 DEPAS=$as
6342 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6343 YASM=$yasmexe
6344 DEPYASM=$yasmexe
6345 AR=$ar
6346 ARFLAGS=$arflags
6347 AR_O=$ar_o
6348 RANLIB=$ranlib
6349 STRIP=$strip
6350 CP=cp -p
6351 LN_S=$ln_s
6352 CPPFLAGS=$CPPFLAGS
6353 CFLAGS=$CFLAGS
6354 CXXFLAGS=$CXXFLAGS
6355 OBJCFLAGS=$OBJCFLAGS
6356 ASFLAGS=$ASFLAGS
6357 AS_C=$AS_C
6358 AS_O=$AS_O
6359 OBJCC_C=$OBJCC_C
6360 OBJCC_E=$OBJCC_E
6361 OBJCC_O=$OBJCC_O
6362 CC_C=$CC_C
6363 CC_E=$CC_E
6364 CC_O=$CC_O
6365 CXX_C=$CXX_C
6366 CXX_O=$CXX_O
6367 LD_O=$LD_O
6368 LD_LIB=$LD_LIB
6369 LD_PATH=$LD_PATH
6370 DLLTOOL=$dlltool
6371 WINDRES=$windres
6372 DEPWINDRES=$dep_cc
6373 DOXYGEN=$doxygen
6374 LDFLAGS=$LDFLAGS
6375 LDEXEFLAGS=$LDEXEFLAGS
6376 LDLIBFLAGS=$LDLIBFLAGS
6377 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6378 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6379 YASMFLAGS=$YASMFLAGS
6380 BUILDSUF=$build_suffix
6381 PROGSSUF=$progs_suffix
6382 FULLNAME=$FULLNAME
6383 LIBPREF=$LIBPREF
6384 LIBSUF=$LIBSUF
6385 LIBNAME=$LIBNAME
6386 SLIBPREF=$SLIBPREF
6387 SLIBSUF=$SLIBSUF
6388 EXESUF=$EXESUF
6389 EXTRA_VERSION=$extra_version
6390 CCDEP=$CCDEP
6391 CXXDEP=$CXXDEP
6392 CCDEP_FLAGS=$CCDEP_FLAGS
6393 ASDEP=$ASDEP
6394 ASDEP_FLAGS=$ASDEP_FLAGS
6395 CC_DEPFLAGS=$CC_DEPFLAGS
6396 AS_DEPFLAGS=$AS_DEPFLAGS
6397 HOSTCC=$host_cc
6398 HOSTLD=$host_ld
6399 HOSTCFLAGS=$host_cflags
6400 HOSTCPPFLAGS=$host_cppflags
6401 HOSTEXESUF=$HOSTEXESUF
6402 HOSTLDFLAGS=$host_ldflags
6403 HOSTLIBS=$host_libs
6404 DEPHOSTCC=$host_cc
6405 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6406 HOSTCCDEP=$HOSTCCDEP
6407 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6408 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6409 HOSTCC_C=$HOSTCC_C
6410 HOSTCC_O=$HOSTCC_O
6411 HOSTLD_O=$HOSTLD_O
6412 TARGET_EXEC=$target_exec $target_exec_args
6413 TARGET_PATH=$target_path
6414 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6415 CFLAGS-ffplay=$sdl_cflags
6416 ZLIB=$($ldflags_filter -lz)
6417 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6418 EXTRALIBS=$extralibs
6419 COMPAT_OBJS=$compat_objs
6420 EXEOBJS=$exeobjs
6421 INSTALL=$install
6422 LIBTARGET=${LIBTARGET}
6423 SLIBNAME=${SLIBNAME}
6424 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6425 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6426 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6427 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6428 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6429 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6430 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6431 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6432 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6433 NOREDZONE_FLAGS=$noredzone_flags
6434 EOF
6435
6436 get_version(){
6437     lcname=lib${1}
6438     name=$(toupper $lcname)
6439     file=$source_path/$lcname/version.h
6440     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6441     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6442     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6443     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6444     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6445     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6446 }
6447
6448 map 'get_version $v' $LIBRARY_LIST
6449
6450 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6451
6452 print_program_libs(){
6453     eval "program_libs=\$${1}_libs"
6454     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6455 }
6456
6457 map 'print_program_libs $v' $PROGRAM_LIST
6458
6459 cat > $TMPH <<EOF
6460 /* Automatically generated by configure - do not modify! */
6461 #ifndef FFMPEG_CONFIG_H
6462 #define FFMPEG_CONFIG_H
6463 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6464 #define FFMPEG_LICENSE "$(c_escape $license)"
6465 #define CONFIG_THIS_YEAR 2016
6466 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6467 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6468 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6469 #define av_restrict $_restrict
6470 #define EXTERN_PREFIX "${extern_prefix}"
6471 #define EXTERN_ASM ${extern_prefix}
6472 #define BUILDSUF "$build_suffix"
6473 #define SLIBSUF "$SLIBSUF"
6474 #define HAVE_MMX2 HAVE_MMXEXT
6475 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6476 EOF
6477
6478 test -n "$assert_level" &&
6479     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6480
6481 test -n "$malloc_prefix" &&
6482     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6483
6484 if enabled yasm; then
6485     append config_files $TMPASM
6486     printf '' >$TMPASM
6487 fi
6488
6489 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6490
6491
6492 mkdir -p doc
6493 mkdir -p tests
6494 mkdir -p tests/api
6495 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6496
6497 print_config ARCH_   "$config_files" $ARCH_LIST
6498 print_config HAVE_   "$config_files" $HAVE_LIST
6499 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6500                                      $CONFIG_EXTRA      \
6501                                      $ALL_COMPONENTS    \
6502
6503 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6504 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6505
6506 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6507 cp_if_changed $TMPH config.h
6508 touch .config
6509
6510 enabled yasm && cp_if_changed $TMPASM config.asm
6511
6512 cat > $TMPH <<EOF
6513 /* Generated by ffconf */
6514 #ifndef AVUTIL_AVCONFIG_H
6515 #define AVUTIL_AVCONFIG_H
6516 EOF
6517
6518 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6519
6520 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6521
6522 cp_if_changed $TMPH libavutil/avconfig.h
6523
6524 if test -n "$WARNINGS"; then
6525     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6526     enabled fatal_warnings && exit 1
6527 fi
6528
6529 # build pkg-config files
6530
6531 lib_version(){
6532     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6533 }
6534
6535 pkgconfig_generate(){
6536     name=$1
6537     shortname=${name#lib}${build_suffix}
6538     comment=$2
6539     version=$3
6540     libs=$4
6541     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6542     requires=${requires%, }
6543     enabled ${name#lib} || return 0
6544     mkdir -p $name
6545     cat <<EOF > $name/$name${build_suffix}.pc
6546 prefix=$prefix
6547 exec_prefix=\${prefix}
6548 libdir=$libdir
6549 includedir=$incdir
6550
6551 Name: $name
6552 Description: $comment
6553 Version: $version
6554 Requires: $(enabled shared || echo $requires)
6555 Requires.private: $(enabled shared && echo $requires)
6556 Conflicts:
6557 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6558 Libs.private: $(enabled shared && echo $libs)
6559 Cflags: -I\${includedir}
6560 EOF
6561
6562 mkdir -p doc/examples/pc-uninstalled
6563 includedir=${source_path}
6564 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6565     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
6566 prefix=
6567 exec_prefix=
6568 libdir=\${pcfiledir}/../../../$name
6569 includedir=${includedir}
6570
6571 Name: $name
6572 Description: $comment
6573 Version: $version
6574 Requires: $requires
6575 Conflicts:
6576 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6577 Cflags: -I\${includedir}
6578 EOF
6579 }
6580
6581 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6582 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6583 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6584 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6585 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6586 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6587 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6588 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6589 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"