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_pollfd
1958     struct_rusage_ru_maxrss
1959     struct_sctp_event_subscribe
1960     struct_sockaddr_in6
1961     struct_sockaddr_sa_len
1962     struct_sockaddr_storage
1963     struct_stat_st_mtim_tv_nsec
1964     struct_v4l2_frmivalenum_discrete
1965 "
1966
1967 HAVE_LIST="
1968     $ARCH_EXT_LIST
1969     $(add_suffix _external $ARCH_EXT_LIST)
1970     $(add_suffix _inline   $ARCH_EXT_LIST)
1971     $ARCH_FEATURES
1972     $ATOMICS_LIST
1973     $BUILTIN_LIST
1974     $COMPLEX_FUNCS
1975     $HAVE_LIST_CMDLINE
1976     $HAVE_LIST_PUB
1977     $HEADERS_LIST
1978     $INTRINSICS_LIST
1979     $MATH_FUNCS
1980     $SYSTEM_FUNCS
1981     $THREADS_LIST
1982     $TOOLCHAIN_FEATURES
1983     $TYPES_LIST
1984     atomics_native
1985     dos_paths
1986     dxva2_lib
1987     dxva2api_cobj
1988     libc_msvcrt
1989     libdc1394_1
1990     libdc1394_2
1991     makeinfo
1992     makeinfo_html
1993     perl
1994     pod2man
1995     sdl
1996     section_data_rel_ro
1997     texi2html
1998     threads
1999     vaapi_x11
2000     vdpau_x11
2001     winrt
2002     xlib
2003 "
2004
2005 # options emitted with CONFIG_ prefix but not available on the command line
2006 CONFIG_EXTRA="
2007     aandcttables
2008     ac3dsp
2009     audio_frame_queue
2010     audiodsp
2011     blockdsp
2012     bswapdsp
2013     cabac
2014     dirac_parse
2015     dvprofile
2016     exif
2017     faandct
2018     faanidct
2019     fdctdsp
2020     flacdsp
2021     fmtconvert
2022     frame_thread_encoder
2023     g722dsp
2024     golomb
2025     gplv3
2026     h263dsp
2027     h264chroma
2028     h264dsp
2029     h264pred
2030     h264qpel
2031     hpeldsp
2032     huffman
2033     huffyuvdsp
2034     huffyuvencdsp
2035     idctdsp
2036     iirfilter
2037     imdct15
2038     intrax8
2039     iso_media
2040     ividsp
2041     jpegtables
2042     lgplv3
2043     libx262
2044     llauddsp
2045     llviddsp
2046     lpc
2047     lzf
2048     me_cmp
2049     mpeg_er
2050     mpegaudio
2051     mpegaudiodsp
2052     mpegvideo
2053     mpegvideoenc
2054     mss34dsp
2055     pixblockdsp
2056     qpeldsp
2057     qsv
2058     qsvdec
2059     qsvenc
2060     rangecoder
2061     riffdec
2062     riffenc
2063     rtpdec
2064     rtpenc_chain
2065     rv34dsp
2066     sinewin
2067     snappy
2068     startcode
2069     texturedsp
2070     texturedspenc
2071     tpeldsp
2072     vc1dsp
2073     videodsp
2074     vp3dsp
2075     vp56dsp
2076     vp8dsp
2077     wma_freqs
2078     wmv2dsp
2079 "
2080
2081 CMDLINE_SELECT="
2082     $ARCH_EXT_LIST
2083     $CONFIG_LIST
2084     $HAVE_LIST_CMDLINE
2085     $THREADS_LIST
2086     asm
2087     cross_compile
2088     debug
2089     extra_warnings
2090     logging
2091     lto
2092     optimizations
2093     rpath
2094     stripping
2095 "
2096
2097 PATHS_LIST="
2098     bindir
2099     datadir
2100     docdir
2101     incdir
2102     libdir
2103     mandir
2104     pkgconfigdir
2105     prefix
2106     shlibdir
2107     install_name_dir
2108 "
2109
2110 CMDLINE_SET="
2111     $PATHS_LIST
2112     ar
2113     arch
2114     as
2115     assert_level
2116     build_suffix
2117     cc
2118     objcc
2119     cpu
2120     cross_prefix
2121     custom_allocator
2122     cxx
2123     dep_cc
2124     doxygen
2125     env
2126     extra_version
2127     gas
2128     host_cc
2129     host_cflags
2130     host_ld
2131     host_ldflags
2132     host_libs
2133     host_os
2134     install
2135     ld
2136     logfile
2137     malloc_prefix
2138     nm
2139     optflags
2140     pkg_config
2141     pkg_config_flags
2142     progs_suffix
2143     random_seed
2144     ranlib
2145     samples
2146     strip
2147     sws_max_filter_size
2148     sysinclude
2149     sysroot
2150     target_exec
2151     target_os
2152     target_path
2153     target_samples
2154     tempprefix
2155     toolchain
2156     valgrind
2157     yasmexe
2158 "
2159
2160 CMDLINE_APPEND="
2161     extra_cflags
2162     extra_cxxflags
2163     extra_objcflags
2164     host_cppflags
2165 "
2166
2167 # code dependency declarations
2168
2169 # architecture extensions
2170
2171 armv5te_deps="arm"
2172 armv6_deps="arm"
2173 armv6t2_deps="arm"
2174 armv8_deps="aarch64"
2175 neon_deps_any="aarch64 arm"
2176 intrinsics_neon_deps="neon"
2177 vfp_deps_any="aarch64 arm"
2178 vfpv3_deps="vfp"
2179 setend_deps="arm"
2180
2181 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2182
2183 mipsfpu_deps="mips"
2184 mipsdsp_deps="mips"
2185 mipsdspr2_deps="mips"
2186 mips32r2_deps="mips"
2187 mips32r5_deps="mips"
2188 mips32r6_deps="mips"
2189 mips64r2_deps="mips"
2190 mips64r6_deps="mips"
2191 msa_deps="mipsfpu"
2192 mmi_deps="mips"
2193
2194 altivec_deps="ppc"
2195 dcbzl_deps="ppc"
2196 ldbrx_deps="ppc"
2197 ppc4xx_deps="ppc"
2198 vsx_deps="altivec"
2199 power8_deps="vsx"
2200
2201 cpunop_deps="i686"
2202 x86_64_select="i686"
2203 x86_64_suggest="fast_cmov"
2204
2205 amd3dnow_deps="mmx"
2206 amd3dnowext_deps="amd3dnow"
2207 i686_deps="x86"
2208 mmx_deps="x86"
2209 mmxext_deps="mmx"
2210 sse_deps="mmxext"
2211 sse2_deps="sse"
2212 sse3_deps="sse2"
2213 ssse3_deps="sse3"
2214 sse4_deps="ssse3"
2215 sse42_deps="sse4"
2216 aesni_deps="sse42"
2217 avx_deps="sse42"
2218 xop_deps="avx"
2219 fma3_deps="avx"
2220 fma4_deps="avx"
2221 avx2_deps="avx"
2222
2223 mmx_external_deps="yasm"
2224 mmx_inline_deps="inline_asm"
2225 mmx_suggest="mmx_external mmx_inline"
2226
2227 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2228     eval dep=\$${ext}_deps
2229     eval ${ext}_external_deps='"${dep}_external"'
2230     eval ${ext}_inline_deps='"${dep}_inline"'
2231     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2232 done
2233
2234 aligned_stack_if_any="aarch64 ppc x86"
2235 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2236 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2237 fast_unaligned_if_any="aarch64 ppc x86"
2238 simd_align_16_if_any="altivec neon sse"
2239
2240 # system capabilities
2241 symver_if_any="symver_asm_label symver_gnu_asm"
2242 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2243
2244 # threading support
2245 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2246 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2247 atomics_win32_if="MemoryBarrier"
2248 atomics_native_if_any="$ATOMICS_LIST"
2249 w32threads_deps="atomics_native"
2250 threads_if_any="$THREADS_LIST"
2251
2252 # subsystems
2253 dct_select="rdft"
2254 dirac_parse_select="golomb"
2255 error_resilience_select="me_cmp"
2256 faandct_deps="faan fdctdsp"
2257 faanidct_deps="faan idctdsp"
2258 h264dsp_select="startcode"
2259 frame_thread_encoder_deps="encoders threads"
2260 intrax8_select="error_resilience"
2261 mdct_select="fft"
2262 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2263 mpeg_er_select="error_resilience"
2264 mpegaudio_select="mpegaudiodsp"
2265 mpegaudiodsp_select="dct"
2266 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2267 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2268 qsvdec_select="qsv"
2269 qsvenc_select="qsv"
2270 vc1dsp_select="h264chroma qpeldsp startcode"
2271 rdft_select="fft"
2272
2273 # decoders / encoders
2274 aac_decoder_select="imdct15 mdct sinewin"
2275 aac_fixed_decoder_select="mdct sinewin"
2276 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2277 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2278 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2279 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2280 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2281 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2282 adpcm_g722_decoder_select="g722dsp"
2283 adpcm_g722_encoder_select="g722dsp"
2284 aic_decoder_select="golomb idctdsp"
2285 alac_encoder_select="lpc"
2286 als_decoder_select="bswapdsp"
2287 amrnb_decoder_select="lsp"
2288 amrwb_decoder_select="lsp"
2289 amv_decoder_select="sp5x_decoder exif"
2290 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2291 ape_decoder_select="bswapdsp llauddsp"
2292 apng_decoder_select="zlib"
2293 apng_encoder_select="huffyuvencdsp zlib"
2294 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2295 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2296 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2297 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2298 atrac1_decoder_select="mdct sinewin"
2299 atrac3_decoder_select="mdct"
2300 atrac3p_decoder_select="mdct sinewin"
2301 avrn_decoder_select="exif jpegtables"
2302 bink_decoder_select="blockdsp hpeldsp"
2303 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2304 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2305 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2306 cllc_decoder_select="bswapdsp"
2307 comfortnoise_encoder_select="lpc"
2308 cook_decoder_select="audiodsp mdct sinewin"
2309 cscd_decoder_select="lzo"
2310 cscd_decoder_suggest="zlib"
2311 dca_decoder_select="mdct"
2312 dds_decoder_select="texturedsp"
2313 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2314 dnxhd_decoder_select="blockdsp idctdsp"
2315 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2316 dvvideo_decoder_select="dvprofile idctdsp"
2317 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2318 dxa_decoder_select="zlib"
2319 dxv_decoder_select="lzf texturedsp"
2320 eac3_decoder_select="ac3_decoder"
2321 eac3_encoder_select="ac3_encoder"
2322 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2323 eatgq_decoder_select="aandcttables"
2324 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2325 exr_decoder_select="zlib"
2326 ffv1_decoder_select="golomb rangecoder"
2327 ffv1_encoder_select="rangecoder"
2328 ffvhuff_decoder_select="huffyuv_decoder"
2329 ffvhuff_encoder_select="huffyuv_encoder"
2330 fic_decoder_select="golomb"
2331 flac_decoder_select="flacdsp golomb"
2332 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2333 flashsv2_decoder_select="zlib"
2334 flashsv2_encoder_select="zlib"
2335 flashsv_decoder_select="zlib"
2336 flashsv_encoder_select="zlib"
2337 flv_decoder_select="h263_decoder"
2338 flv_encoder_select="h263_encoder"
2339 fourxm_decoder_select="blockdsp bswapdsp"
2340 fraps_decoder_select="bswapdsp huffman"
2341 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2342 g729_decoder_select="audiodsp"
2343 h261_decoder_select="mpegvideo"
2344 h261_encoder_select="aandcttables mpegvideoenc"
2345 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2346 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2347 h263i_decoder_select="h263_decoder"
2348 h263p_decoder_select="h263_decoder"
2349 h263p_encoder_select="h263_encoder"
2350 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2351 h264_decoder_suggest="error_resilience"
2352 h264_qsv_decoder_deps="libmfx"
2353 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2354 h264_qsv_encoder_deps="libmfx"
2355 h264_qsv_encoder_select="qsvenc"
2356 hap_decoder_select="snappy texturedsp"
2357 hap_encoder_deps="libsnappy"
2358 hap_encoder_select="texturedspenc"
2359 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2360 hevc_qsv_decoder_deps="libmfx"
2361 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2362 hevc_qsv_encoder_deps="libmfx"
2363 hevc_qsv_encoder_select="qsvenc"
2364 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2365 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2366 iac_decoder_select="imc_decoder"
2367 imc_decoder_select="bswapdsp fft mdct sinewin"
2368 indeo3_decoder_select="hpeldsp"
2369 indeo4_decoder_select="ividsp"
2370 indeo5_decoder_select="ividsp"
2371 interplay_video_decoder_select="hpeldsp"
2372 jpegls_decoder_select="golomb mjpeg_decoder"
2373 jpegls_encoder_select="golomb"
2374 jv_decoder_select="blockdsp"
2375 lagarith_decoder_select="huffyuvdsp"
2376 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2377 loco_decoder_select="golomb"
2378 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2379 metasound_decoder_select="lsp mdct sinewin"
2380 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2381 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2382 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2383 mjpegb_decoder_select="mjpeg_decoder"
2384 mlp_decoder_select="mlp_parser"
2385 motionpixels_decoder_select="bswapdsp"
2386 mp1_decoder_select="mpegaudio"
2387 mp1float_decoder_select="mpegaudio"
2388 mp2_decoder_select="mpegaudio"
2389 mp2float_decoder_select="mpegaudio"
2390 mp3_decoder_select="mpegaudio"
2391 mp3adu_decoder_select="mpegaudio"
2392 mp3adufloat_decoder_select="mpegaudio"
2393 mp3float_decoder_select="mpegaudio"
2394 mp3on4_decoder_select="mpegaudio"
2395 mp3on4float_decoder_select="mpegaudio"
2396 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2397 mpc8_decoder_select="mpegaudiodsp"
2398 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2399 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2400 mpegvideo_decoder_select="mpegvideo"
2401 mpeg1video_decoder_select="mpegvideo"
2402 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2403 mpeg2video_decoder_select="mpegvideo"
2404 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2405 mpeg2_qsv_decoder_deps="libmfx"
2406 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2407 mpeg2_qsv_encoder_deps="libmfx"
2408 mpeg2_qsv_encoder_select="qsvenc"
2409 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2410 mpeg4_encoder_select="h263_encoder"
2411 msa1_decoder_select="mss34dsp"
2412 msmpeg4v1_decoder_select="h263_decoder"
2413 msmpeg4v2_decoder_select="h263_decoder"
2414 msmpeg4v2_encoder_select="h263_encoder"
2415 msmpeg4v3_decoder_select="h263_decoder"
2416 msmpeg4v3_encoder_select="h263_encoder"
2417 mss2_decoder_select="vc1_decoder mpegvideo"
2418 mts2_decoder_select="mss34dsp"
2419 mxpeg_decoder_select="mjpeg_decoder"
2420 nellymoser_decoder_select="mdct sinewin"
2421 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2422 nuv_decoder_select="idctdsp lzo"
2423 on2avc_decoder_select="mdct"
2424 opus_decoder_deps="swresample"
2425 opus_decoder_select="imdct15"
2426 png_decoder_select="zlib"
2427 png_encoder_select="huffyuvencdsp zlib"
2428 prores_decoder_select="blockdsp idctdsp"
2429 prores_encoder_select="fdctdsp"
2430 qcelp_decoder_select="lsp"
2431 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2432 ra_144_decoder_select="audiodsp"
2433 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2434 ralf_decoder_select="golomb"
2435 rawvideo_decoder_select="bswapdsp"
2436 rscc_decoder_select="zlib"
2437 rtjpeg_decoder_select="me_cmp"
2438 rv10_decoder_select="h263_decoder"
2439 rv10_encoder_select="h263_encoder"
2440 rv20_decoder_select="h263_decoder"
2441 rv20_encoder_select="h263_encoder"
2442 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2443 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2444 screenpresso_decoder_select="zlib"
2445 shorten_decoder_select="golomb"
2446 sipr_decoder_select="lsp"
2447 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2448 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2449 sonic_decoder_select="golomb rangecoder"
2450 sonic_encoder_select="golomb rangecoder"
2451 sonic_ls_encoder_select="golomb rangecoder"
2452 sp5x_decoder_select="mjpeg_decoder"
2453 svq1_decoder_select="hpeldsp"
2454 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2455 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2456 svq3_decoder_suggest="zlib"
2457 tak_decoder_select="audiodsp"
2458 tdsc_decoder_select="zlib mjpeg_decoder"
2459 theora_decoder_select="vp3_decoder"
2460 thp_decoder_select="mjpeg_decoder"
2461 tiff_decoder_suggest="zlib lzma"
2462 tiff_encoder_suggest="zlib"
2463 truehd_decoder_select="mlp_parser"
2464 truemotion2_decoder_select="bswapdsp"
2465 truespeech_decoder_select="bswapdsp"
2466 tscc_decoder_select="zlib"
2467 twinvq_decoder_select="mdct lsp sinewin"
2468 txd_decoder_select="texturedsp"
2469 utvideo_decoder_select="bswapdsp"
2470 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2471 vble_decoder_select="huffyuvdsp"
2472 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2473 vc1_qsv_decoder_deps="libmfx"
2474 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2475 vc1image_decoder_select="vc1_decoder"
2476 vorbis_decoder_select="mdct"
2477 vorbis_encoder_select="mdct"
2478 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2479 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2480 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2481 vp6a_decoder_select="vp6_decoder"
2482 vp6f_decoder_select="vp6_decoder"
2483 vp7_decoder_select="h264pred videodsp vp8dsp"
2484 vp8_decoder_select="h264pred videodsp vp8dsp"
2485 vp9_decoder_select="videodsp vp9_parser"
2486 webp_decoder_select="vp8_decoder exif"
2487 wmalossless_decoder_select="llauddsp"
2488 wmapro_decoder_select="mdct sinewin wma_freqs"
2489 wmav1_decoder_select="mdct sinewin wma_freqs"
2490 wmav1_encoder_select="mdct sinewin wma_freqs"
2491 wmav2_decoder_select="mdct sinewin wma_freqs"
2492 wmav2_encoder_select="mdct sinewin wma_freqs"
2493 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2494 wmv1_decoder_select="h263_decoder"
2495 wmv1_encoder_select="h263_encoder"
2496 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2497 wmv2_encoder_select="h263_encoder wmv2dsp"
2498 wmv3_decoder_select="vc1_decoder"
2499 wmv3image_decoder_select="wmv3_decoder"
2500 xma1_decoder_select="wmapro_decoder"
2501 xma2_decoder_select="wmapro_decoder"
2502 zerocodec_decoder_select="zlib"
2503 zlib_decoder_select="zlib"
2504 zlib_encoder_select="zlib"
2505 zmbv_decoder_select="zlib"
2506 zmbv_encoder_select="zlib"
2507
2508 # hardware accelerators
2509 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2510 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2511 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2512 vaapi_deps="va_va_h"
2513 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2514 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2515 vda_deps="vda_framework pthreads"
2516 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2517 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2518 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2519 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2520 xvmc_deps="X11_extensions_XvMClib_h"
2521
2522 h263_vaapi_hwaccel_deps="vaapi"
2523 h263_vaapi_hwaccel_select="h263_decoder"
2524 h263_videotoolbox_hwaccel_deps="videotoolbox"
2525 h263_videotoolbox_hwaccel_select="h263_decoder"
2526 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2527 h264_d3d11va_hwaccel_deps="d3d11va"
2528 h264_d3d11va_hwaccel_select="h264_decoder"
2529 h264_dxva2_hwaccel_deps="dxva2"
2530 h264_dxva2_hwaccel_select="h264_decoder"
2531 h264_mediacodec_decoder_deps="mediacodec"
2532 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2533 h264_mmal_decoder_deps="mmal"
2534 h264_mmal_decoder_select="mmal"
2535 h264_mmal_hwaccel_deps="mmal"
2536 h264_qsv_hwaccel_deps="libmfx"
2537 h264_vaapi_hwaccel_deps="vaapi"
2538 h264_vaapi_hwaccel_select="h264_decoder"
2539 h264_vda_decoder_deps="vda"
2540 h264_vda_decoder_select="h264_decoder"
2541 h264_vda_hwaccel_deps="vda"
2542 h264_vda_hwaccel_select="h264_decoder"
2543 h264_vda_old_hwaccel_deps="vda"
2544 h264_vda_old_hwaccel_select="h264_decoder"
2545 h264_vdpau_decoder_deps="vdpau"
2546 h264_vdpau_decoder_select="h264_decoder"
2547 h264_vdpau_hwaccel_deps="vdpau"
2548 h264_vdpau_hwaccel_select="h264_decoder"
2549 h264_videotoolbox_hwaccel_deps="videotoolbox"
2550 h264_videotoolbox_hwaccel_select="h264_decoder"
2551 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2552 hevc_d3d11va_hwaccel_select="hevc_decoder"
2553 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2554 hevc_dxva2_hwaccel_select="hevc_decoder"
2555 hevc_qsv_hwaccel_deps="libmfx"
2556 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2557 hevc_vaapi_hwaccel_select="hevc_decoder"
2558 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2559 hevc_vdpau_hwaccel_select="hevc_decoder"
2560 mpeg_vdpau_decoder_deps="vdpau"
2561 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2562 mpeg_xvmc_hwaccel_deps="xvmc"
2563 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2564 mpeg1_vdpau_decoder_deps="vdpau"
2565 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2566 mpeg1_vdpau_hwaccel_deps="vdpau"
2567 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2568 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2569 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2570 mpeg1_xvmc_hwaccel_deps="xvmc"
2571 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2572 mpeg2_crystalhd_decoder_select="crystalhd"
2573 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2574 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2575 mpeg2_dxva2_hwaccel_deps="dxva2"
2576 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2577 mpeg2_mmal_decoder_deps="mmal"
2578 mpeg2_mmal_decoder_select="mmal"
2579 mpeg2_mmal_hwaccel_deps="mmal"
2580 mpeg2_qsv_hwaccel_deps="libmfx"
2581 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2582 mpeg2_vaapi_hwaccel_deps="vaapi"
2583 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2584 mpeg2_vdpau_hwaccel_deps="vdpau"
2585 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2586 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2587 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2588 mpeg2_xvmc_hwaccel_deps="xvmc"
2589 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2590 mpeg4_crystalhd_decoder_select="crystalhd"
2591 mpeg4_mmal_decoder_deps="mmal"
2592 mpeg4_mmal_decoder_select="mmal"
2593 mpeg4_mmal_hwaccel_deps="mmal"
2594 mpeg4_vaapi_hwaccel_deps="vaapi"
2595 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2596 mpeg4_vdpau_decoder_deps="vdpau"
2597 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2598 mpeg4_vdpau_hwaccel_deps="vdpau"
2599 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2600 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2601 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2602 msmpeg4_crystalhd_decoder_select="crystalhd"
2603 vc1_crystalhd_decoder_select="crystalhd"
2604 vc1_d3d11va_hwaccel_deps="d3d11va"
2605 vc1_d3d11va_hwaccel_select="vc1_decoder"
2606 vc1_dxva2_hwaccel_deps="dxva2"
2607 vc1_dxva2_hwaccel_select="vc1_decoder"
2608 vc1_mmal_decoder_deps="mmal"
2609 vc1_mmal_decoder_select="mmal"
2610 vc1_mmal_hwaccel_deps="mmal"
2611 vc1_qsv_hwaccel_deps="libmfx"
2612 vc1_qsv_hwaccel_select="qsvdec_vc1"
2613 vc1_vaapi_hwaccel_deps="vaapi"
2614 vc1_vaapi_hwaccel_select="vc1_decoder"
2615 vc1_vdpau_decoder_deps="vdpau"
2616 vc1_vdpau_decoder_select="vc1_decoder"
2617 vc1_vdpau_hwaccel_deps="vdpau"
2618 vc1_vdpau_hwaccel_select="vc1_decoder"
2619 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2620 vp9_d3d11va_hwaccel_select="vp9_decoder"
2621 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2622 vp9_dxva2_hwaccel_select="vp9_decoder"
2623 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9"
2624 vp9_vaapi_hwaccel_select="vp9_decoder"
2625 wmv3_crystalhd_decoder_select="crystalhd"
2626 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2627 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2628 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2629 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2630 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2631
2632 # parsers
2633 h264_parser_select="h264_decoder"
2634 hevc_parser_select="golomb"
2635 mpegvideo_parser_select="mpegvideo"
2636 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2637 vc1_parser_select="vc1dsp"
2638
2639 # bitstream_filters
2640 mjpeg2jpeg_bsf_select="jpegtables"
2641
2642 # external libraries
2643 chromaprint_muxer_deps="chromaprint"
2644 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2645 h264_videotoolbox_encoder_select="bzlib zlib iconv"
2646 libcelt_decoder_deps="libcelt"
2647 libdcadec_decoder_deps="libdcadec"
2648 libfaac_encoder_deps="libfaac"
2649 libfaac_encoder_select="audio_frame_queue"
2650 libfdk_aac_decoder_deps="libfdk_aac"
2651 libfdk_aac_encoder_deps="libfdk_aac"
2652 libfdk_aac_encoder_select="audio_frame_queue"
2653 libgme_demuxer_deps="libgme"
2654 libgsm_decoder_deps="libgsm"
2655 libgsm_encoder_deps="libgsm"
2656 libgsm_ms_decoder_deps="libgsm"
2657 libgsm_ms_encoder_deps="libgsm"
2658 libilbc_decoder_deps="libilbc"
2659 libilbc_encoder_deps="libilbc"
2660 libkvazaar_encoder_deps="libkvazaar"
2661 libmodplug_demuxer_deps="libmodplug"
2662 libmp3lame_encoder_deps="libmp3lame"
2663 libmp3lame_encoder_select="audio_frame_queue"
2664 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2665 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2666 libopencore_amrnb_encoder_select="audio_frame_queue"
2667 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2668 libopenh264_encoder_deps="libopenh264"
2669 libopenjpeg_decoder_deps="libopenjpeg"
2670 libopenjpeg_encoder_deps="libopenjpeg"
2671 libopus_decoder_deps="libopus"
2672 libopus_encoder_deps="libopus"
2673 libopus_encoder_select="audio_frame_queue"
2674 libschroedinger_decoder_deps="libschroedinger"
2675 libschroedinger_encoder_deps="libschroedinger"
2676 libshine_encoder_deps="libshine"
2677 libshine_encoder_select="audio_frame_queue"
2678 libspeex_decoder_deps="libspeex"
2679 libspeex_encoder_deps="libspeex"
2680 libspeex_encoder_select="audio_frame_queue"
2681 libtheora_encoder_deps="libtheora"
2682 libtwolame_encoder_deps="libtwolame"
2683 libutvideo_decoder_deps="libutvideo"
2684 libutvideo_encoder_deps="libutvideo"
2685 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2686 libvorbis_decoder_deps="libvorbis"
2687 libvorbis_encoder_deps="libvorbis"
2688 libvorbis_encoder_select="audio_frame_queue"
2689 libvpx_vp8_decoder_deps="libvpx"
2690 libvpx_vp8_encoder_deps="libvpx"
2691 libvpx_vp9_decoder_deps="libvpx"
2692 libvpx_vp9_encoder_deps="libvpx"
2693 libwavpack_encoder_deps="libwavpack"
2694 libwebp_encoder_deps="libwebp"
2695 libwebp_anim_encoder_deps="libwebp"
2696 libx262_encoder_deps="libx262"
2697 libx264_encoder_deps="libx264"
2698 libx264rgb_encoder_deps="libx264"
2699 libx264rgb_encoder_select="libx264_encoder"
2700 libx265_encoder_deps="libx265"
2701 libxavs_encoder_deps="libxavs"
2702 libxvid_encoder_deps="libxvid"
2703 libzvbi_teletext_decoder_deps="libzvbi"
2704 nvenc_encoder_deps="nvenc"
2705 nvenc_h264_encoder_deps="nvenc"
2706 nvenc_hevc_encoder_deps="nvenc"
2707 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2708 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2709 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2710 videotoolbox_encoder_suggest="vda_framework"
2711
2712 # demuxers / muxers
2713 ac3_demuxer_select="ac3_parser"
2714 asf_demuxer_select="riffdec"
2715 asf_o_demuxer_select="riffdec"
2716 asf_muxer_select="riffenc"
2717 asf_stream_muxer_select="asf_muxer"
2718 avi_demuxer_select="iso_media riffdec exif"
2719 avi_muxer_select="riffenc"
2720 avisynth_demuxer_deps="avisynth"
2721 avisynth_demuxer_select="riffdec"
2722 caf_demuxer_select="iso_media riffdec"
2723 dash_muxer_select="mp4_muxer"
2724 dirac_demuxer_select="dirac_parser"
2725 dts_demuxer_select="dca_parser"
2726 dtshd_demuxer_select="dca_parser"
2727 dv_demuxer_select="dvprofile"
2728 dv_muxer_select="dvprofile"
2729 dxa_demuxer_select="riffdec"
2730 eac3_demuxer_select="ac3_parser"
2731 f4v_muxer_select="mov_muxer"
2732 flac_demuxer_select="flac_parser"
2733 hds_muxer_select="flv_muxer"
2734 hls_muxer_select="mpegts_muxer"
2735 image2_alias_pix_demuxer_select="image2_demuxer"
2736 image2_brender_pix_demuxer_select="image2_demuxer"
2737 ipod_muxer_select="mov_muxer"
2738 ismv_muxer_select="mov_muxer"
2739 libnut_demuxer_deps="libnut"
2740 libnut_muxer_deps="libnut"
2741 matroska_audio_muxer_select="matroska_muxer"
2742 matroska_demuxer_select="iso_media riffdec"
2743 matroska_demuxer_suggest="bzlib lzo zlib"
2744 matroska_muxer_select="iso_media riffenc"
2745 mmf_muxer_select="riffenc"
2746 mov_demuxer_select="iso_media riffdec"
2747 mov_demuxer_suggest="zlib"
2748 mov_muxer_select="iso_media riffenc rtpenc_chain"
2749 mp3_demuxer_select="mpegaudio_parser"
2750 mp4_muxer_select="mov_muxer"
2751 mpegts_demuxer_select="iso_media"
2752 mpegts_muxer_select="adts_muxer latm_muxer"
2753 mpegtsraw_demuxer_select="mpegts_demuxer"
2754 mxf_d10_muxer_select="mxf_muxer"
2755 mxf_opatom_muxer_select="mxf_muxer"
2756 nut_muxer_select="riffenc"
2757 nuv_demuxer_select="riffdec"
2758 oga_muxer_select="ogg_muxer"
2759 ogg_demuxer_select="dirac_parse"
2760 opus_muxer_select="ogg_muxer"
2761 psp_muxer_select="mov_muxer"
2762 rtp_demuxer_select="sdp_demuxer"
2763 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2764 rtsp_demuxer_select="http_protocol rtpdec"
2765 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2766 sap_demuxer_select="sdp_demuxer"
2767 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2768 sdp_demuxer_select="rtpdec"
2769 smoothstreaming_muxer_select="ismv_muxer"
2770 spdif_muxer_select="aac_parser"
2771 spx_muxer_select="ogg_muxer"
2772 swf_demuxer_suggest="zlib"
2773 tak_demuxer_select="tak_parser"
2774 tg2_muxer_select="mov_muxer"
2775 tgp_muxer_select="mov_muxer"
2776 vobsub_demuxer_select="mpegps_demuxer"
2777 w64_demuxer_select="wav_demuxer"
2778 w64_muxer_select="wav_muxer"
2779 wav_demuxer_select="riffdec"
2780 wav_muxer_select="riffenc"
2781 webm_muxer_select="iso_media riffenc"
2782 webm_dash_manifest_demuxer_select="matroska_demuxer"
2783 wtv_demuxer_select="mpegts_demuxer riffdec"
2784 wtv_muxer_select="mpegts_muxer riffenc"
2785 xmv_demuxer_select="riffdec"
2786 xwma_demuxer_select="riffdec"
2787
2788 # indevs / outdevs
2789 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2790 alsa_outdev_deps="alsa_asoundlib_h"
2791 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2792 avfoundation_indev_select="avfoundation"
2793 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2794 caca_outdev_deps="libcaca"
2795 decklink_indev_deps="decklink pthreads"
2796 decklink_indev_extralibs="-lstdc++"
2797 decklink_outdev_deps="decklink pthreads"
2798 decklink_outdev_extralibs="-lstdc++"
2799 dshow_indev_deps="IBaseFilter"
2800 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2801 dv1394_indev_deps="dv1394"
2802 dv1394_indev_select="dv_demuxer"
2803 fbdev_indev_deps="linux_fb_h"
2804 fbdev_outdev_deps="linux_fb_h"
2805 gdigrab_indev_deps="CreateDIBSection"
2806 gdigrab_indev_extralibs="-lgdi32"
2807 gdigrab_indev_select="bmp_decoder"
2808 iec61883_indev_deps="libiec61883"
2809 jack_indev_deps="jack_jack_h"
2810 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2811 lavfi_indev_deps="avfilter"
2812 libcdio_indev_deps="libcdio"
2813 libdc1394_indev_deps="libdc1394"
2814 libv4l2_indev_deps="libv4l2"
2815 openal_indev_deps="openal"
2816 opengl_outdev_deps="opengl"
2817 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2818 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2819 pulse_indev_deps="libpulse"
2820 pulse_outdev_deps="libpulse"
2821 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2822 qtkit_indev_select="qtkit"
2823 sdl_outdev_deps="sdl"
2824 sndio_indev_deps="sndio_h"
2825 sndio_outdev_deps="sndio_h"
2826 v4l_indev_deps="linux_videodev_h"
2827 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2828 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2829 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2830 vfwcap_indev_extralibs="-lavicap32"
2831 x11grab_indev_deps="x11grab"
2832 x11grab_xcb_indev_deps="libxcb"
2833 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2834 xv_outdev_extralibs="-lXv -lX11 -lXext"
2835
2836 # protocols
2837 async_protocol_deps="threads"
2838 bluray_protocol_deps="libbluray"
2839 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2840 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2841 ffrtmpcrypt_protocol_select="tcp_protocol"
2842 ffrtmphttp_protocol_deps="!librtmp_protocol"
2843 ffrtmphttp_protocol_select="http_protocol"
2844 ftp_protocol_select="tcp_protocol"
2845 gopher_protocol_select="network"
2846 http_protocol_select="tcp_protocol"
2847 httpproxy_protocol_select="tcp_protocol"
2848 https_protocol_select="tls_protocol"
2849 icecast_protocol_select="http_protocol"
2850 librtmp_protocol_deps="librtmp"
2851 librtmpe_protocol_deps="librtmp"
2852 librtmps_protocol_deps="librtmp"
2853 librtmpt_protocol_deps="librtmp"
2854 librtmpte_protocol_deps="librtmp"
2855 libsmbclient_protocol_deps="libsmbclient gplv3"
2856 libssh_protocol_deps="libssh"
2857 mmsh_protocol_select="http_protocol"
2858 mmst_protocol_select="network"
2859 rtmp_protocol_deps="!librtmp_protocol"
2860 rtmp_protocol_select="tcp_protocol"
2861 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2862 rtmps_protocol_deps="!librtmp_protocol"
2863 rtmps_protocol_select="tls_protocol"
2864 rtmpt_protocol_select="ffrtmphttp_protocol"
2865 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2866 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2867 rtp_protocol_select="udp_protocol"
2868 sctp_protocol_deps="struct_sctp_event_subscribe"
2869 sctp_protocol_select="network"
2870 srtp_protocol_select="rtp_protocol"
2871 tcp_protocol_select="network"
2872 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
2873 tls_gnutls_protocol_select="tcp_protocol"
2874 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
2875 tls_openssl_protocol_select="tcp_protocol"
2876 tls_schannel_protocol_deps="schannel"
2877 tls_schannel_protocol_select="tcp_protocol"
2878 tls_securetransport_protocol_deps="securetransport"
2879 tls_securetransport_protocol_select="tcp_protocol"
2880 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2881 udp_protocol_select="network"
2882 udplite_protocol_select="network"
2883 unix_protocol_deps="sys_un_h"
2884 unix_protocol_select="network"
2885
2886 # filters
2887 afftfilt_filter_deps="avcodec"
2888 afftfilt_filter_select="fft"
2889 amovie_filter_deps="avcodec avformat"
2890 aresample_filter_deps="swresample"
2891 ass_filter_deps="libass"
2892 asyncts_filter_deps="avresample"
2893 atempo_filter_deps="avcodec"
2894 atempo_filter_select="rdft"
2895 azmq_filter_deps="libzmq"
2896 blackframe_filter_deps="gpl"
2897 boxblur_filter_deps="gpl"
2898 bs2b_filter_deps="libbs2b"
2899 colormatrix_filter_deps="gpl"
2900 cover_rect_filter_deps="avcodec avformat gpl"
2901 cropdetect_filter_deps="gpl"
2902 delogo_filter_deps="gpl"
2903 deshake_filter_select="pixelutils"
2904 drawtext_filter_deps="libfreetype"
2905 ebur128_filter_deps="gpl"
2906 eq_filter_deps="gpl"
2907 fftfilt_filter_deps="avcodec"
2908 fftfilt_filter_select="rdft"
2909 find_rect_filter_deps="avcodec avformat gpl"
2910 firequalizer_filter_deps="avcodec"
2911 firequalizer_filter_select="rdft"
2912 flite_filter_deps="libflite"
2913 frei0r_filter_deps="frei0r dlopen"
2914 frei0r_src_filter_deps="frei0r dlopen"
2915 fspp_filter_deps="gpl"
2916 geq_filter_deps="gpl"
2917 histeq_filter_deps="gpl"
2918 hqdn3d_filter_deps="gpl"
2919 hwupload_cuda_filter_deps="cuda"
2920 interlace_filter_deps="gpl"
2921 kerndeint_filter_deps="gpl"
2922 ladspa_filter_deps="ladspa dlopen"
2923 mcdeint_filter_deps="avcodec gpl"
2924 movie_filter_deps="avcodec avformat"
2925 mpdecimate_filter_deps="gpl"
2926 mpdecimate_filter_select="pixelutils"
2927 mptestsrc_filter_deps="gpl"
2928 negate_filter_deps="lut_filter"
2929 nnedi_filter_deps="gpl"
2930 ocr_filter_deps="libtesseract"
2931 ocv_filter_deps="libopencv"
2932 owdenoise_filter_deps="gpl"
2933 pan_filter_deps="swresample"
2934 perspective_filter_deps="gpl"
2935 phase_filter_deps="gpl"
2936 pp7_filter_deps="gpl"
2937 pp_filter_deps="gpl postproc"
2938 pullup_filter_deps="gpl"
2939 removelogo_filter_deps="avcodec avformat swscale"
2940 repeatfields_filter_deps="gpl"
2941 resample_filter_deps="avresample"
2942 rubberband_filter_deps="librubberband"
2943 sab_filter_deps="gpl swscale"
2944 scale2ref_filter_deps="swscale"
2945 scale_filter_deps="swscale"
2946 select_filter_select="pixelutils"
2947 showcqt_filter_deps="avcodec avformat swscale"
2948 showcqt_filter_select="fft"
2949 showfreqs_filter_deps="avcodec"
2950 showfreqs_filter_select="fft"
2951 showspectrum_filter_deps="avcodec"
2952 showspectrum_filter_select="fft"
2953 showspectrumpic_filter_deps="avcodec"
2954 showspectrumpic_filter_select="fft"
2955 smartblur_filter_deps="gpl swscale"
2956 sofalizer_filter_deps="netcdf avcodec"
2957 sofalizer_filter_select="fft"
2958 spectrumsynth_filter_deps="avcodec"
2959 spectrumsynth_filter_select="fft"
2960 spp_filter_deps="gpl avcodec"
2961 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2962 stereo3d_filter_deps="gpl"
2963 subtitles_filter_deps="avformat avcodec libass"
2964 super2xsai_filter_deps="gpl"
2965 pixfmts_super2xsai_test_deps="super2xsai_filter"
2966 tinterlace_filter_deps="gpl"
2967 tinterlace_merge_test_deps="tinterlace_filter"
2968 tinterlace_pad_test_deps="tinterlace_filter"
2969 uspp_filter_deps="gpl avcodec"
2970 vidstabdetect_filter_deps="libvidstab"
2971 vidstabtransform_filter_deps="libvidstab"
2972 zmq_filter_deps="libzmq"
2973 zoompan_filter_deps="swscale"
2974 zscale_filter_deps="libzimg"
2975
2976 # examples
2977 avcodec_example_deps="avcodec avutil"
2978 avio_dir_cmd="avformat avutil"
2979 avio_reading="avformat avcodec avutil"
2980 decoding_encoding_example_deps="avcodec avformat avutil"
2981 demuxing_decoding_example_deps="avcodec avformat avutil"
2982 extract_mvs_example_deps="avcodec avformat avutil"
2983 filter_audio_example_deps="avfilter avutil"
2984 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2985 filtering_video_example_deps="avfilter avcodec avformat avutil"
2986 metadata_example_deps="avformat avutil"
2987 muxing_example_deps="avcodec avformat avutil swscale"
2988 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2989 remuxing_example_deps="avcodec avformat avutil"
2990 resampling_audio_example_deps="avutil swresample"
2991 scaling_video_example_deps="avutil swscale"
2992 transcode_aac_example_deps="avcodec avformat swresample"
2993 transcoding_example_deps="avfilter avcodec avformat avutil"
2994
2995 # libraries, in linking order
2996 avcodec_deps="avutil"
2997 avdevice_deps="avformat avcodec avutil"
2998 avfilter_deps="avutil"
2999 avformat_deps="avcodec avutil"
3000 avresample_deps="avutil"
3001 postproc_deps="avutil gpl"
3002 swresample_deps="avutil"
3003 swscale_deps="avutil"
3004
3005 # programs
3006 ffmpeg_deps="avcodec avfilter avformat swresample"
3007 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3008                null_filter
3009                setpts_filter trim_filter"
3010 ffplay_deps="avcodec avformat swscale swresample sdl"
3011 ffplay_libs='$sdl_libs'
3012 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3013 ffprobe_deps="avcodec avformat"
3014 ffserver_deps="avformat fork sarestart"
3015 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3016
3017 # documentation
3018 podpages_deps="perl"
3019 manpages_deps="perl pod2man"
3020 htmlpages_deps="perl"
3021 htmlpages_deps_any="makeinfo_html texi2html"
3022 txtpages_deps="perl makeinfo"
3023 doc_deps_any="manpages htmlpages podpages txtpages"
3024
3025 # default parameters
3026
3027 logfile="config.log"
3028
3029 # installation paths
3030 prefix_default="/usr/local"
3031 bindir_default='${prefix}/bin'
3032 datadir_default='${prefix}/share/ffmpeg'
3033 docdir_default='${prefix}/share/doc/ffmpeg'
3034 incdir_default='${prefix}/include'
3035 libdir_default='${prefix}/lib'
3036 mandir_default='${prefix}/share/man'
3037
3038 # toolchain
3039 ar_default="ar"
3040 cc_default="gcc"
3041 cxx_default="g++"
3042 host_cc_default="gcc"
3043 cp_f="cp -f"
3044 doxygen_default="doxygen"
3045 install="install"
3046 ln_s="ln -s -f"
3047 nm_default="nm -g"
3048 objformat="elf"
3049 pkg_config_default=pkg-config
3050 ranlib_default="ranlib"
3051 strip_default="strip"
3052 yasmexe_default="yasm"
3053 windres_default="windres"
3054
3055 # OS
3056 target_os_default=$(tolower $(uname -s))
3057 host_os=$target_os_default
3058
3059 # machine
3060 if test "$target_os_default" = aix; then
3061     arch_default=$(uname -p)
3062     strip_default="strip -X32_64"
3063 else
3064     arch_default=$(uname -m)
3065 fi
3066 cpu="generic"
3067 intrinsics="none"
3068
3069 # configurable options
3070 enable $PROGRAM_LIST
3071 enable $DOCUMENT_LIST
3072 enable $EXAMPLE_LIST
3073 enable $(filter_out avresample $LIBRARY_LIST)
3074 enable stripping
3075
3076 enable asm
3077 enable debug
3078 enable doc
3079 enable faan faandct faanidct
3080 enable optimizations
3081 enable runtime_cpudetect
3082 enable safe_bitstream_reader
3083 enable static
3084 enable swscale_alpha
3085 enable valgrind_backtrace
3086
3087 sws_max_filter_size_default=256
3088 set_default sws_max_filter_size
3089
3090 # Enable hwaccels by default.
3091 enable d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3092 enable xlib
3093
3094 enable vda_framework videotoolbox videotoolbox_encoder
3095
3096 # build settings
3097 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3098 LIBPREF="lib"
3099 LIBSUF=".a"
3100 FULLNAME='$(NAME)$(BUILDSUF)'
3101 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3102 SLIBPREF="lib"
3103 SLIBSUF=".so"
3104 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3105 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3106 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3107 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3108 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3109 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3110
3111 asflags_filter=echo
3112 cflags_filter=echo
3113 ldflags_filter=echo
3114
3115 AS_C='-c'
3116 AS_O='-o $@'
3117 CC_C='-c'
3118 CC_E='-E -o $@'
3119 CC_O='-o $@'
3120 CXX_C='-c'
3121 CXX_O='-o $@'
3122 OBJCC_C='-c'
3123 OBJCC_E='-E -o $@'
3124 OBJCC_O='-o $@'
3125 LD_O='-o $@'
3126 LD_LIB='-l%'
3127 LD_PATH='-L'
3128 HOSTCC_C='-c'
3129 HOSTCC_E='-E -o $@'
3130 HOSTCC_O='-o $@'
3131 HOSTLD_O='-o $@'
3132
3133 host_libs='-lm'
3134 host_cflags_filter=echo
3135 host_ldflags_filter=echo
3136
3137 target_path='$(CURDIR)'
3138
3139 # since the object filename is not given with the -MM flag, the compiler
3140 # is only able to print the basename, and we must add the path ourselves
3141 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3142 DEPFLAGS='-MM'
3143
3144 # find source path
3145 if test -f configure; then
3146     source_path=.
3147 else
3148     source_path=$(cd $(dirname "$0"); pwd)
3149     case "$source_path" in
3150         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3151     esac
3152     test -e "$source_path/config.h" &&
3153         die "Out of tree builds are impossible with config.h in source dir."
3154 fi
3155
3156 for v in "$@"; do
3157     r=${v#*=}
3158     l=${v%"$r"}
3159     r=$(sh_quote "$r")
3160     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3161 done
3162
3163 find_things(){
3164     thing=$1
3165     pattern=$2
3166     file=$source_path/$3
3167     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3168 }
3169
3170 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3171 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3172 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3173 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3174 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
3175 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3176 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3177 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3178 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3179 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3180
3181 find_things_extern(){
3182     thing=$1
3183     pattern=$2
3184     file=$source_path/$3
3185     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3186 }
3187
3188 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3189
3190 ALL_COMPONENTS="
3191     $BSF_LIST
3192     $DECODER_LIST
3193     $DEMUXER_LIST
3194     $ENCODER_LIST
3195     $FILTER_LIST
3196     $HWACCEL_LIST
3197     $INDEV_LIST
3198     $MUXER_LIST
3199     $OUTDEV_LIST
3200     $PARSER_LIST
3201     $PROTOCOL_LIST
3202 "
3203
3204 for n in $COMPONENT_LIST; do
3205     v=$(toupper ${n%s})_LIST
3206     eval enable \$$v
3207     eval ${n}_if_any="\$$v"
3208 done
3209
3210 enable $ARCH_EXT_LIST
3211
3212 die_unknown(){
3213     echo "Unknown option \"$1\"."
3214     echo "See $0 --help for available options."
3215     exit 1
3216 }
3217
3218 print_in_columns() {
3219     cols=$(expr $ncols / 24)
3220     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3221 }
3222
3223 show_list() {
3224     suffix=_$1
3225     shift
3226     echo $* | sed s/$suffix//g | print_in_columns
3227     exit 0
3228 }
3229
3230 rand_list(){
3231     IFS=', '
3232     set -- $*
3233     unset IFS
3234     for thing; do
3235         comp=${thing%:*}
3236         prob=${thing#$comp}
3237         prob=${prob#:}
3238         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3239         echo "prob ${prob:-0.5}"
3240         printf '%s\n' $comp
3241     done
3242 }
3243
3244 do_random(){
3245     action=$1
3246     shift
3247     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3248     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3249 }
3250
3251 for opt do
3252     optval="${opt#*=}"
3253     case "$opt" in
3254         --extra-ldflags=*)
3255             add_ldflags $optval
3256         ;;
3257         --extra-ldexeflags=*)
3258             add_ldexeflags $optval
3259         ;;
3260         --extra-ldlibflags=*)
3261             add_ldlibflags $optval
3262         ;;
3263         --extra-libs=*)
3264             add_extralibs $optval
3265         ;;
3266         --disable-devices)
3267             disable $INDEV_LIST $OUTDEV_LIST
3268         ;;
3269         --enable-debug=*)
3270             debuglevel="$optval"
3271         ;;
3272         --disable-programs)
3273             disable $PROGRAM_LIST
3274         ;;
3275         --disable-everything)
3276             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3277         ;;
3278         --disable-all)
3279             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3280             disable $LIBRARY_LIST $PROGRAM_LIST doc
3281             enable avutil
3282         ;;
3283         --enable-random|--disable-random)
3284             action=${opt%%-random}
3285             do_random ${action#--} $COMPONENT_LIST
3286         ;;
3287         --enable-random=*|--disable-random=*)
3288             action=${opt%%-random=*}
3289             do_random ${action#--} $optval
3290         ;;
3291         --enable-*=*|--disable-*=*)
3292             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3293             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3294             eval list=\$$(toupper $thing)_LIST
3295             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3296             list=$(filter "$name" $list)
3297             [ "$list" = "" ] && warn "Option $opt did not match anything"
3298             $action $list
3299         ;;
3300         --enable-?*|--disable-?*)
3301             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3302             if is_in $option $COMPONENT_LIST; then
3303                 test $action = disable && action=unset
3304                 eval $action \$$(toupper ${option%s})_LIST
3305             elif is_in $option $CMDLINE_SELECT; then
3306                 $action $option
3307             else
3308                 die_unknown $opt
3309             fi
3310         ;;
3311         --list-*)
3312             NAME="${opt#--list-}"
3313             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3314             NAME=${NAME%s}
3315             eval show_list $NAME \$$(toupper $NAME)_LIST
3316         ;;
3317         --help|-h) show_help
3318         ;;
3319         --fatal-warnings) enable fatal_warnings
3320         ;;
3321         *)
3322             optname="${opt%%=*}"
3323             optname="${optname#--}"
3324             optname=$(echo "$optname" | sed 's/-/_/g')
3325             if is_in $optname $CMDLINE_SET; then
3326                 eval $optname='$optval'
3327             elif is_in $optname $CMDLINE_APPEND; then
3328                 append $optname "$optval"
3329             else
3330                 die_unknown $opt
3331             fi
3332         ;;
3333     esac
3334 done
3335
3336 for e in $env; do
3337     eval "export $e"
3338 done
3339
3340 disabled logging && logfile=/dev/null
3341
3342 # Disable all the library-specific components if the library itself
3343 # is disabled, see AVCODEC_LIST and following _LIST variables.
3344
3345 disable_components(){
3346     disabled ${1} && disable $(
3347         eval components="\$$(toupper ${1})_COMPONENTS"
3348         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3349     )
3350 }
3351
3352 map 'disable_components $v' $LIBRARY_LIST
3353
3354 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3355 set >> $logfile
3356
3357 test -n "$valgrind" && toolchain="valgrind-memcheck"
3358
3359 case "$toolchain" in
3360     *-asan)
3361         cc_default="${toolchain%-asan}"
3362         add_cflags  -fsanitize=address
3363         add_ldflags -fsanitize=address
3364     ;;
3365     *-tsan)
3366         cc_default="${toolchain%-tsan}"
3367         add_cflags  -fsanitize=thread -pie
3368         add_ldflags -fsanitize=thread -pie
3369         case "$toolchain" in
3370             gcc-tsan)
3371                 add_cflags  -fPIC
3372                 add_ldflags -fPIC
3373                 ;;
3374         esac
3375     ;;
3376     *-usan)
3377         cc_default="${toolchain%-usan}"
3378         add_cflags  -fsanitize=undefined
3379         add_ldflags -fsanitize=undefined
3380     ;;
3381     valgrind-*)
3382         target_exec_default="valgrind"
3383         case "$toolchain" in
3384             valgrind-massif)
3385                 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"
3386                 ;;
3387             valgrind-memcheck)
3388                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3389                 ;;
3390         esac
3391     ;;
3392     msvc)
3393         # Check whether the current MSVC version needs the C99 converter.
3394         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3395         # support enough of C99 to build ffmpeg. Default to the new
3396         # behaviour if the regexp was unable to match anything, since this
3397         # successfully parses the version number of existing supported
3398         # versions that require the converter (MSVC 2010 and 2012).
3399         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3400         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3401             cc_default="cl"
3402         else
3403             cc_default="c99wrap cl"
3404         fi
3405         ld_default="$source_path/compat/windows/mslink"
3406         nm_default="dumpbin -symbols"
3407         ar_default="lib"
3408         case "$arch" in
3409         arm*)
3410             as_default="armasm"
3411             ;;
3412         esac
3413         target_os_default="win32"
3414         # Use a relative path for TMPDIR. This makes sure all the
3415         # ffconf temp files are written with a relative path, avoiding
3416         # issues with msys/win32 path conversion for MSVC parameters
3417         # such as -Fo<file> or -out:<file>.
3418         TMPDIR=.
3419     ;;
3420     icl)
3421         cc_default="icl"
3422         ld_default="xilink"
3423         nm_default="dumpbin -symbols"
3424         ar_default="xilib"
3425         target_os_default="win32"
3426         TMPDIR=.
3427     ;;
3428     gcov)
3429         add_cflags  -fprofile-arcs -ftest-coverage
3430         add_ldflags -fprofile-arcs -ftest-coverage
3431     ;;
3432     hardened)
3433         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3434         add_cflags   -fno-strict-overflow -fstack-protector-all
3435         add_ldflags  -Wl,-z,relro -Wl,-z,now
3436     ;;
3437     ?*)
3438         die "Unknown toolchain $toolchain"
3439     ;;
3440 esac
3441
3442 test -n "$cross_prefix" && enable cross_compile
3443
3444 if enabled cross_compile; then
3445     test -n "$arch" && test -n "$target_os" ||
3446         die "Must specify target arch and OS when cross-compiling"
3447 fi
3448
3449 ar_default="${cross_prefix}${ar_default}"
3450 cc_default="${cross_prefix}${cc_default}"
3451 cxx_default="${cross_prefix}${cxx_default}"
3452 nm_default="${cross_prefix}${nm_default}"
3453 pkg_config_default="${cross_prefix}${pkg_config_default}"
3454 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3455     ranlib_default="${cross_prefix}${ranlib_default} -D"
3456 else
3457     ranlib_default="${cross_prefix}${ranlib_default}"
3458 fi
3459 strip_default="${cross_prefix}${strip_default}"
3460 windres_default="${cross_prefix}${windres_default}"
3461
3462 sysinclude_default="${sysroot}/usr/include"
3463
3464 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3465     target_exec target_os yasmexe
3466 enabled cross_compile || host_cc_default=$cc
3467 set_default host_cc
3468
3469 pkg_config_fail_message=""
3470 if ! $pkg_config --version >/dev/null 2>&1; then
3471     warn "$pkg_config not found, library detection may fail."
3472     pkg_config=false
3473 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3474     pkg_config_fail_message="
3475 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3476 fi
3477
3478 if test $doxygen != $doxygen_default && \
3479   ! $doxygen --version >/dev/null 2>&1; then
3480     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3481 fi
3482
3483 exesuf() {
3484     case $1 in
3485         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3486     esac
3487 }
3488
3489 EXESUF=$(exesuf $target_os)
3490 HOSTEXESUF=$(exesuf $host_os)
3491
3492 # set temporary file name
3493 : ${TMPDIR:=$TEMPDIR}
3494 : ${TMPDIR:=$TMP}
3495 : ${TMPDIR:=/tmp}
3496
3497 if [ -n "$tempprefix" ] ; then
3498     mktemp(){
3499         echo $tempprefix.${HOSTNAME}.${UID}
3500     }
3501 elif ! check_cmd mktemp -u XXXXXX; then
3502     # simple replacement for missing mktemp
3503     # NOT SAFE FOR GENERAL USE
3504     mktemp(){
3505         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3506     }
3507 fi
3508
3509 tmpfile(){
3510     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3511         (set -C; exec > $tmp) 2>/dev/null ||
3512         die "Unable to create temporary file in $TMPDIR."
3513     append TMPFILES $tmp
3514     eval $1=$tmp
3515 }
3516
3517 trap 'rm -f -- $TMPFILES' EXIT
3518
3519 tmpfile TMPASM .asm
3520 tmpfile TMPC   .c
3521 tmpfile TMPCPP .cpp
3522 tmpfile TMPE   $EXESUF
3523 tmpfile TMPH   .h
3524 tmpfile TMPM   .m
3525 tmpfile TMPO   .o
3526 tmpfile TMPS   .S
3527 tmpfile TMPSH  .sh
3528 tmpfile TMPV   .ver
3529
3530 unset -f mktemp
3531
3532 chmod +x $TMPE
3533
3534 # make sure we can execute files in $TMPDIR
3535 cat > $TMPSH 2>> $logfile <<EOF
3536 #! /bin/sh
3537 EOF
3538 chmod +x $TMPSH >> $logfile 2>&1
3539 if ! $TMPSH >> $logfile 2>&1; then
3540     cat <<EOF
3541 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3542 variable to another directory and make sure that it is not mounted noexec.
3543 EOF
3544     die "Sanity test failed."
3545 fi
3546
3547 armasm_flags(){
3548     for flag; do
3549         case $flag in
3550             # Filter out MSVC cl.exe options from cflags that shouldn't
3551             # be passed to gas-preprocessor
3552             -M[TD]*)                                            ;;
3553             *)                  echo $flag                      ;;
3554         esac
3555    done
3556 }
3557
3558 ccc_flags(){
3559     for flag; do
3560         case $flag in
3561             -std=c99)           echo -c99                       ;;
3562             -mcpu=*)            echo -arch ${flag#*=}           ;;
3563             -mieee)             echo -ieee                      ;;
3564             -O*|-fast)          echo $flag                      ;;
3565             -fno-math-errno)    echo -assume nomath_errno       ;;
3566             -g)                 echo -g3                        ;;
3567             -Wall)              echo -msg_enable level2         ;;
3568             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3569             -Wl,*)              echo $flag                      ;;
3570             -f*|-W*)                                            ;;
3571             *)                  echo $flag                      ;;
3572         esac
3573    done
3574 }
3575
3576 cparser_flags(){
3577     for flag; do
3578         case $flag in
3579             -Wno-switch)             echo -Wno-switch-enum ;;
3580             -Wno-format-zero-length) ;;
3581             -Wdisabled-optimization) ;;
3582             -Wno-pointer-sign)       echo -Wno-other ;;
3583             *)                       echo $flag ;;
3584         esac
3585     done
3586 }
3587
3588 msvc_common_flags(){
3589     for flag; do
3590         case $flag in
3591             # In addition to specifying certain flags under the compiler
3592             # specific filters, they must be specified here as well or else the
3593             # generic catch all at the bottom will print the original flag.
3594             -Wall)                ;;
3595             -std=c99)             ;;
3596             # Common flags
3597             -fomit-frame-pointer) ;;
3598             -g)                   echo -Z7 ;;
3599             -fno-math-errno)      ;;
3600             -fno-common)          ;;
3601             -fno-signed-zeros)    ;;
3602             -fPIC)                ;;
3603             -mthumb)              ;;
3604             -march=*)             ;;
3605             -lz)                  echo zlib.lib ;;
3606             -lavifil32)           echo vfw32.lib ;;
3607             -lavicap32)           echo vfw32.lib user32.lib ;;
3608             -lx264)               echo libx264.lib ;;
3609             -l*)                  echo ${flag#-l}.lib ;;
3610             -LARGEADDRESSAWARE)   echo $flag ;;
3611             -L*)                  echo -libpath:${flag#-L} ;;
3612             *)                    echo $flag ;;
3613         esac
3614     done
3615 }
3616
3617 msvc_flags(){
3618     msvc_common_flags "$@"
3619     for flag; do
3620         case $flag in
3621             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3622                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3623                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3624                                        -wd4307 \
3625                                        -wd4273 -wd4554 -wd4701 ;;
3626         esac
3627     done
3628 }
3629
3630 icl_flags(){
3631     msvc_common_flags "$@"
3632     for flag; do
3633         case $flag in
3634             # Despite what Intel's documentation says -Wall, which is supported
3635             # on Windows, does enable remarks so disable them here.
3636             -Wall)                echo $flag -Qdiag-disable:remark ;;
3637             -std=c99)             echo -Qstd=c99 ;;
3638             -flto)                echo -ipo ;;
3639         esac
3640     done
3641 }
3642
3643 icc_flags(){
3644     for flag; do
3645         case $flag in
3646             -flto)                echo -ipo ;;
3647             *)                    echo $flag ;;
3648         esac
3649     done
3650 }
3651
3652 pgi_flags(){
3653     for flag; do
3654         case $flag in
3655             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3656             -fomit-frame-pointer) echo -Mnoframe ;;
3657             -g)                   echo -gopt ;;
3658             *)                    echo $flag ;;
3659         esac
3660     done
3661 }
3662
3663 suncc_flags(){
3664     for flag; do
3665         case $flag in
3666             -march=*|-mcpu=*)
3667                 case "${flag#*=}" in
3668                     native)                   echo -xtarget=native       ;;
3669                     v9|niagara)               echo -xarch=sparc          ;;
3670                     ultrasparc)               echo -xarch=sparcvis       ;;
3671                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3672                     i586|pentium)             echo -xchip=pentium        ;;
3673                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3674                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3675                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3676                     pentium4*)          echo -xtarget=pentium4           ;;
3677                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3678                     *-sse3)             echo -xarch=sse3                 ;;
3679                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3680                     bonnell)                   echo -xarch=ssse3         ;;
3681                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3682                     westmere)                  echo -xtarget=westmere    ;;
3683                     silvermont)                echo -xarch=sse4_2        ;;
3684                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3685                     core-avx*|ivybridge|haswell|broadwell)
3686                                                echo -xarch=avx           ;;
3687                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3688                     btver1)                    echo -xarch=amdsse4a      ;;
3689                     btver2|bdver*)             echo -xarch=avx           ;;
3690                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3691                     k8|opteron|athlon64|athlon-fx)
3692                                                echo -xarch=sse2a         ;;
3693                     athlon*)                   echo -xarch=pentium_proa  ;;
3694                 esac
3695                 ;;
3696             -std=c99)             echo -xc99              ;;
3697             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3698             -fPIC)                echo -KPIC -xcode=pic32 ;;
3699             -W*,*)                echo $flag              ;;
3700             -f*-*|-W*|-mimpure-text)                      ;;
3701             -shared)              echo -G                 ;;
3702             *)                    echo $flag              ;;
3703         esac
3704     done
3705 }
3706
3707 tms470_flags(){
3708     for flag; do
3709         case $flag in
3710             -march=*|-mcpu=*)
3711                 case "${flag#*=}" in
3712                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3713                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3714                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3715                     armv6*|arm11*)          echo -mv=6   ;;
3716                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3717                                             echo -mv=5e  ;;
3718                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3719                 esac
3720                 ;;
3721             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3722             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3723             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3724             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3725             -msoft-float)   echo --float_support=vfplib       ;;
3726             -O[0-3]|-mf=*)  echo $flag                        ;;
3727             -g)             echo -g -mn                       ;;
3728             -pds=*)         echo $flag                        ;;
3729             -D*|-I*)        echo $flag                        ;;
3730             --gcc|--abi=*)  echo $flag                        ;;
3731             -me)            echo $flag                        ;;
3732         esac
3733     done
3734 }
3735
3736 probe_cc(){
3737     pfx=$1
3738     _cc=$2
3739     first=$3
3740
3741     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3742     unset _ld_o _ldflags _ld_lib _ld_path
3743     unset _depflags _DEPCMD _DEPFLAGS
3744     _flags_filter=echo
3745
3746     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3747         true # no-op to avoid reading stdin in following checks
3748     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3749         _type=llvm_gcc
3750         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3751         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3752         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3753         _cflags_speed='-O3'
3754         _cflags_size='-Os'
3755     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3756         _type=gcc
3757         gcc_version=$($_cc --version | head -n1)
3758         gcc_basever=$($_cc -dumpversion)
3759         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3760         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3761         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3762         case $gcc_basever in
3763             2) ;;
3764             2.*) ;;
3765             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3766         esac
3767         if [ "$first" = true ]; then
3768             case $gcc_basever in
3769                 4.2*)
3770                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3771             esac
3772         fi
3773         _cflags_speed='-O3'
3774         _cflags_size='-Os'
3775     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3776         _type=icc
3777         _ident=$($_cc --version | head -n1)
3778         _depflags='-MMD'
3779         _cflags_speed='-O3'
3780         _cflags_size='-Os'
3781         _cflags_noopt='-O1'
3782         _flags_filter=icc_flags
3783     elif $_cc -v 2>&1 | grep -q xlc; then
3784         _type=xlc
3785         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3786         _cflags_speed='-O5'
3787         _cflags_size='-O5 -qcompact'
3788     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3789         _type=ccc
3790         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3791         _DEPFLAGS='-M'
3792         _cflags_speed='-fast'
3793         _cflags_size='-O1'
3794         _flags_filter=ccc_flags
3795     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3796         test -d "$sysroot" || die "No valid sysroot specified."
3797         _type=armcc
3798         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3799         armcc_conf="$PWD/armcc.conf"
3800         $_cc --arm_linux_configure                 \
3801              --arm_linux_config_file="$armcc_conf" \
3802              --configure_sysroot="$sysroot"        \
3803              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3804              die "Error creating armcc configuration file."
3805         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3806         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3807         as_default="${cross_prefix}gcc"
3808         _depflags='-MMD'
3809         _cflags_speed='-O3'
3810         _cflags_size='-Os'
3811     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3812         _type=tms470
3813         _ident=$($_cc -version | head -n1 | tr -s ' ')
3814         _flags='--gcc --abi=eabi -me'
3815         _cc_e='-ppl -fe=$@'
3816         _cc_o='-fe=$@'
3817         _depflags='-ppa -ppd=$(@:.o=.d)'
3818         _cflags_speed='-O3 -mf=5'
3819         _cflags_size='-O3 -mf=2'
3820         _flags_filter=tms470_flags
3821     elif $_cc -v 2>&1 | grep -q clang; then
3822         _type=clang
3823         _ident=$($_cc --version 2>/dev/null | head -n1)
3824         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3825         _cflags_speed='-O3'
3826         _cflags_size='-Os'
3827     elif $_cc -V 2>&1 | grep -q Sun; then
3828         _type=suncc
3829         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3830         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3831         _DEPFLAGS='-xM1 -xc99'
3832         _ldflags='-std=c99'
3833         _cflags_speed='-O5'
3834         _cflags_size='-O5 -xspace'
3835         _flags_filter=suncc_flags
3836     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3837         _type=pathscale
3838         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3839         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3840         _cflags_speed='-O2'
3841         _cflags_size='-Os'
3842         _flags_filter='filter_out -Wdisabled-optimization'
3843     elif $_cc -v 2>&1 | grep -q Open64; then
3844         _type=open64
3845         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3846         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3847         _cflags_speed='-O2'
3848         _cflags_size='-Os'
3849         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3850     elif $_cc -V 2>&1 | grep -q Portland; then
3851         _type=pgi
3852         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3853         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3854         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3855         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3856         _cflags_noopt="-O"
3857         _flags_filter=pgi_flags
3858     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3859         _type=armasm
3860         _ident=$($_cc | head -n1)
3861         # 4509: "This form of conditional instruction is deprecated"
3862         _flags="-nologo -ignore 4509"
3863         _flags_filter=armasm_flags
3864     elif $_cc 2>&1 | grep -q Intel; then
3865         _type=icl
3866         _ident=$($_cc 2>&1 | head -n1)
3867         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3868         # Not only is O3 broken on 13.x+ but it is slower on all previous
3869         # versions (tested) as well.
3870         _cflags_speed="-O2"
3871         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3872         if $_cc 2>&1 | grep -q Linker; then
3873             _ld_o='-out:$@'
3874         else
3875             _ld_o='-Fe$@'
3876         fi
3877         _cc_o='-Fo$@'
3878         _cc_e='-P'
3879         _flags_filter=icl_flags
3880         _ld_lib='lib%.a'
3881         _ld_path='-libpath:'
3882         # -Qdiag-error to make icl error when seeing certain unknown arguments
3883         _flags='-nologo -Qdiag-error:4044,10157'
3884         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3885         # with MSVC which enables it by default.
3886         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3887         disable stripping
3888     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3889         _type=msvc
3890         _ident=$($_cc 2>&1 | head -n1)
3891         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3892         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3893         _cflags_speed="-O2"
3894         _cflags_size="-O1"
3895         if $_cc -nologo- 2>&1 | grep -q Linker; then
3896             _ld_o='-out:$@'
3897         else
3898             _ld_o='-Fe$@'
3899         fi
3900         _cc_o='-Fo$@'
3901         _cc_e='-P -Fi$@'
3902         _flags_filter=msvc_flags
3903         _ld_lib='lib%.a'
3904         _ld_path='-libpath:'
3905         _flags='-nologo'
3906         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
3907         disable stripping
3908     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3909         _type=cparser
3910         _ident=$($_cc --version | head -n1)
3911         _depflags='-MMD'
3912         _cflags_speed='-O4'
3913         _cflags_size='-O2'
3914         _flags_filter=cparser_flags
3915     fi
3916
3917     eval ${pfx}_type=\$_type
3918     eval ${pfx}_ident=\$_ident
3919 }
3920
3921 set_ccvars(){
3922     eval ${1}_C=\${_cc_c-\${${1}_C}}
3923     eval ${1}_E=\${_cc_e-\${${1}_E}}
3924     eval ${1}_O=\${_cc_o-\${${1}_O}}
3925
3926     if [ -n "$_depflags" ]; then
3927         eval ${1}_DEPFLAGS=\$_depflags
3928     else
3929         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3930         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3931         eval DEP${1}FLAGS=\$_flags
3932     fi
3933 }
3934
3935 probe_cc cc "$cc" "true"
3936 cflags_filter=$_flags_filter
3937 cflags_speed=$_cflags_speed
3938 cflags_size=$_cflags_size
3939 cflags_noopt=$_cflags_noopt
3940 add_cflags $_flags $_cflags
3941 cc_ldflags=$_ldflags
3942 set_ccvars CC
3943
3944 probe_cc hostcc "$host_cc"
3945 host_cflags_filter=$_flags_filter
3946 add_host_cflags  $_flags $_cflags
3947 set_ccvars HOSTCC
3948
3949 test -n "$cc_type" && enable $cc_type ||
3950     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3951
3952 : ${as_default:=$cc}
3953 : ${objcc_default:=$cc}
3954 : ${dep_cc_default:=$cc}
3955 : ${ld_default:=$cc}
3956 : ${host_ld_default:=$host_cc}
3957 set_default ar as objcc dep_cc ld host_ld windres
3958
3959 probe_cc as "$as"
3960 asflags_filter=$_flags_filter
3961 add_asflags $_flags $_cflags
3962 set_ccvars AS
3963
3964 probe_cc objcc "$objcc"
3965 objcflags_filter=$_flags_filter
3966 add_objcflags $_flags $_cflags
3967 set_ccvars OBJC
3968
3969 probe_cc ld "$ld"
3970 ldflags_filter=$_flags_filter
3971 add_ldflags $_flags $_ldflags
3972 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3973 LD_O=${_ld_o-$LD_O}
3974 LD_LIB=${_ld_lib-$LD_LIB}
3975 LD_PATH=${_ld_path-$LD_PATH}
3976
3977 probe_cc hostld "$host_ld"
3978 host_ldflags_filter=$_flags_filter
3979 add_host_ldflags $_flags $_ldflags
3980 HOSTLD_O=${_ld_o-$HOSTLD_O}
3981
3982 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3983     probe_cc depcc "$dep_cc"
3984     CCDEP=${_DEPCMD:-$DEPCMD}
3985     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3986     DEPCCFLAGS=$_flags
3987 fi
3988
3989 if $ar 2>&1 | grep -q Microsoft; then
3990     arflags="-nologo"
3991     ar_o='-out:$@'
3992 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3993     arflags="rq"
3994     ar_o='$@'
3995 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3996     arflags='-Xany -r -c'
3997     ar_o='$@'
3998 elif $ar 2>&1 | grep -q "\[D\] "; then
3999     arflags="rcD"
4000     ar_o='$@'
4001 else
4002     arflags="rc"
4003     ar_o='$@'
4004 fi
4005
4006 add_cflags $extra_cflags
4007 add_cxxflags $extra_cxxflags
4008 add_objcflags $extra_objcflags
4009 add_asflags $extra_cflags
4010
4011 if test -n "$sysroot"; then
4012     case "$cc_type" in
4013         gcc|llvm_gcc|clang)
4014             add_cppflags --sysroot="$sysroot"
4015             add_ldflags --sysroot="$sysroot"
4016 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4017             add_cppflags -isysroot "$sysroot"
4018             add_ldflags -isysroot "$sysroot"
4019         ;;
4020         tms470)
4021             add_cppflags -I"$sysinclude"
4022             add_ldflags  --sysroot="$sysroot"
4023         ;;
4024     esac
4025 fi
4026
4027 if test "$cpu" = host; then
4028     enabled cross_compile &&
4029         die "--cpu=host makes no sense when cross-compiling."
4030
4031     case "$cc_type" in
4032         gcc|llvm_gcc)
4033             check_native(){
4034                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4035                 sed -n "/cc1.*$1=/{
4036                             s/.*$1=\\([^ ]*\\).*/\\1/
4037                             p
4038                             q
4039                         }" $TMPE
4040             }
4041             cpu=$(check_native -march || check_native -mcpu)
4042         ;;
4043         clang)
4044             check_native(){
4045                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4046                 sed -n "/cc1.*-target-cpu /{
4047                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4048                             p
4049                             q
4050                         }" $TMPE
4051             }
4052             cpu=$(check_native -march)
4053         ;;
4054     esac
4055
4056     test "${cpu:-host}" = host &&
4057         die "--cpu=host not supported with compiler $cc"
4058 fi
4059
4060 # Deal with common $arch aliases
4061 case "$arch" in
4062     aarch64|arm64)
4063         arch="aarch64"
4064     ;;
4065     arm*|iPad*|iPhone*)
4066         arch="arm"
4067     ;;
4068     mips*|IP*)
4069         case "$arch" in
4070         *el)
4071             add_cppflags -EL
4072             add_ldflags -EL
4073         ;;
4074         *eb)
4075             add_cppflags -EB
4076             add_ldflags -EB
4077         ;;
4078         esac
4079         arch="mips"
4080     ;;
4081     parisc*|hppa*)
4082         arch="parisc"
4083     ;;
4084     "Power Macintosh"|ppc*|powerpc*)
4085         arch="ppc"
4086     ;;
4087     s390|s390x)
4088         arch="s390"
4089     ;;
4090     sh4|sh)
4091         arch="sh4"
4092     ;;
4093     sun4u|sparc*)
4094         arch="sparc"
4095     ;;
4096     tilegx|tile-gx)
4097         arch="tilegx"
4098     ;;
4099     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4100         arch="x86"
4101     ;;
4102 esac
4103
4104 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4105 enable $arch
4106
4107 # Add processor-specific flags
4108 if enabled aarch64; then
4109
4110     case $cpu in
4111         armv*)
4112             cpuflags="-march=$cpu"
4113         ;;
4114         *)
4115             cpuflags="-mcpu=$cpu"
4116         ;;
4117     esac
4118
4119 elif enabled alpha; then
4120
4121     cpuflags="-mcpu=$cpu"
4122
4123 elif enabled arm; then
4124
4125     check_arm_arch() {
4126         check_cpp_condition stddef.h \
4127             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4128             $cpuflags
4129     }
4130
4131     probe_arm_arch() {
4132         if   check_arm_arch 4;        then echo armv4;
4133         elif check_arm_arch 4T;       then echo armv4t;
4134         elif check_arm_arch 5;        then echo armv5;
4135         elif check_arm_arch 5E;       then echo armv5e;
4136         elif check_arm_arch 5T;       then echo armv5t;
4137         elif check_arm_arch 5TE;      then echo armv5te;
4138         elif check_arm_arch 5TEJ;     then echo armv5te;
4139         elif check_arm_arch 6;        then echo armv6;
4140         elif check_arm_arch 6J;       then echo armv6j;
4141         elif check_arm_arch 6K;       then echo armv6k;
4142         elif check_arm_arch 6Z;       then echo armv6z;
4143         elif check_arm_arch 6ZK;      then echo armv6zk;
4144         elif check_arm_arch 6T2;      then echo armv6t2;
4145         elif check_arm_arch 7;        then echo armv7;
4146         elif check_arm_arch 7A  7_A;  then echo armv7-a;
4147         elif check_arm_arch 7S;       then echo armv7-a;
4148         elif check_arm_arch 7R  7_R;  then echo armv7-r;
4149         elif check_arm_arch 7M  7_M;  then echo armv7-m;
4150         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
4151         elif check_arm_arch 8A  8_A;  then echo armv8-a;
4152         fi
4153     }
4154
4155     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4156
4157     case $cpu in
4158         armv*)
4159             cpuflags="-march=$cpu"
4160             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4161         ;;
4162         *)
4163             cpuflags="-mcpu=$cpu"
4164             case $cpu in
4165                 cortex-a*)                               subarch=armv7a  ;;
4166                 cortex-r*)                               subarch=armv7r  ;;
4167                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4168                 arm11*)                                  subarch=armv6   ;;
4169                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4170                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4171                 *)                             subarch=$(probe_arm_arch) ;;
4172             esac
4173         ;;
4174     esac
4175
4176     case "$subarch" in
4177         armv5t*)    enable fast_clz                ;;
4178         armv[6-8]*)
4179             enable fast_clz
4180             disabled fast_unaligned || enable fast_unaligned
4181             ;;
4182     esac
4183
4184 elif enabled avr32; then
4185
4186     case $cpu in
4187         ap7[02]0[0-2])
4188             subarch="avr32_ap"
4189             cpuflags="-mpart=$cpu"
4190         ;;
4191         ap)
4192             subarch="avr32_ap"
4193             cpuflags="-march=$cpu"
4194         ;;
4195         uc3[ab]*)
4196             subarch="avr32_uc"
4197             cpuflags="-mcpu=$cpu"
4198         ;;
4199         uc)
4200             subarch="avr32_uc"
4201             cpuflags="-march=$cpu"
4202         ;;
4203     esac
4204
4205 elif enabled bfin; then
4206
4207     cpuflags="-mcpu=$cpu"
4208
4209 elif enabled mips; then
4210
4211     cpuflags="-march=$cpu"
4212
4213     if [ "$cpu" != "generic" ]; then
4214         disable mips32r2
4215         disable mips32r5
4216         disable mips64r2
4217         disable mips32r6
4218         disable mips64r6
4219         disable loongson2
4220         disable loongson3
4221
4222         case $cpu in
4223             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4224                 enable mips32r2
4225                 disable msa
4226             ;;
4227             p5600|i6400)
4228                 disable mipsdsp
4229                 disable mipsdspr2
4230             ;;
4231             loongson*)
4232                 enable loongson2
4233                 enable loongson3
4234                 enable local_aligned_8 local_aligned_16 local_aligned_32
4235                 enable simd_align_16
4236                 enable fast_64bit
4237                 enable fast_clz
4238                 enable fast_cmov
4239                 enable fast_unaligned
4240                 disable aligned_stack
4241                 case $cpu in
4242                     loongson3*)
4243                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4244                     ;;
4245                     loongson2e)
4246                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4247                     ;;
4248                     loongson2f)
4249                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4250                     ;;
4251                 esac
4252             ;;
4253             *)
4254                 # Unknown CPU. Disable everything.
4255                 warn "unknown CPU. Disabling all MIPS optimizations."
4256                 disable mipsfpu
4257                 disable mipsdsp
4258                 disable mipsdspr2
4259                 disable msa
4260                 disable mmi
4261             ;;
4262         esac
4263
4264         case $cpu in
4265             24kc)
4266                 disable mipsfpu
4267                 disable mipsdsp
4268                 disable mipsdspr2
4269             ;;
4270             24kf*)
4271                 disable mipsdsp
4272                 disable mipsdspr2
4273             ;;
4274             24kec|34kc|1004kc)
4275                 disable mipsfpu
4276                 disable mipsdspr2
4277             ;;
4278             24kef*|34kf*|1004kf*)
4279                 disable mipsdspr2
4280             ;;
4281             74kc)
4282                 disable mipsfpu
4283             ;;
4284             p5600)
4285                 enable mips32r5
4286                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4287             ;;
4288             i6400)
4289                 enable mips64r6
4290                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4291             ;;
4292         esac
4293     else
4294         # We do not disable anything. Is up to the user to disable the unwanted features.
4295         warn 'generic cpu selected'
4296     fi
4297
4298 elif enabled ppc; then
4299
4300     disable ldbrx
4301
4302     case $(tolower $cpu) in
4303         601|ppc601|powerpc601)
4304             cpuflags="-mcpu=601"
4305             disable altivec
4306         ;;
4307         603*|ppc603*|powerpc603*)
4308             cpuflags="-mcpu=603"
4309             disable altivec
4310         ;;
4311         604*|ppc604*|powerpc604*)
4312             cpuflags="-mcpu=604"
4313             disable altivec
4314         ;;
4315         g3|75*|ppc75*|powerpc75*)
4316             cpuflags="-mcpu=750"
4317             disable altivec
4318         ;;
4319         g4|745*|ppc745*|powerpc745*)
4320             cpuflags="-mcpu=7450"
4321             disable vsx
4322         ;;
4323         74*|ppc74*|powerpc74*)
4324             cpuflags="-mcpu=7400"
4325             disable vsx
4326         ;;
4327         g5|970|ppc970|powerpc970)
4328             cpuflags="-mcpu=970"
4329             disable vsx
4330         ;;
4331         power[3-6]*)
4332             cpuflags="-mcpu=$cpu"
4333             disable vsx
4334         ;;
4335         power[7-8]*)
4336             cpuflags="-mcpu=$cpu"
4337         ;;
4338         cell)
4339             cpuflags="-mcpu=cell"
4340             enable ldbrx
4341             disable vsx
4342         ;;
4343         e500mc)
4344             cpuflags="-mcpu=e500mc"
4345             disable altivec
4346         ;;
4347         e500v2)
4348             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4349             disable altivec
4350             disable dcbzl
4351         ;;
4352         e500)
4353             cpuflags="-mcpu=8540 -mhard-float"
4354             disable altivec
4355             disable dcbzl
4356         ;;
4357     esac
4358
4359 elif enabled sparc; then
4360
4361     case $cpu in
4362         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4363             cpuflags="-mcpu=$cpu"
4364         ;;
4365         ultrasparc*|niagara[234])
4366             cpuflags="-mcpu=$cpu"
4367         ;;
4368     esac
4369
4370 elif enabled x86; then
4371
4372     case $cpu in
4373         i[345]86|pentium)
4374             cpuflags="-march=$cpu"
4375             disable i686
4376             disable mmx
4377         ;;
4378         # targets that do NOT support nopl and conditional mov (cmov)
4379         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4380             cpuflags="-march=$cpu"
4381             disable i686
4382         ;;
4383         # targets that do support nopl and conditional mov (cmov)
4384         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4385         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
4386             cpuflags="-march=$cpu"
4387             enable i686
4388             enable fast_cmov
4389         ;;
4390         # targets that do support conditional mov but on which it's slow
4391         pentium4|pentium4m|prescott|nocona)
4392             cpuflags="-march=$cpu"
4393             enable i686
4394             disable fast_cmov
4395         ;;
4396     esac
4397
4398 fi
4399
4400 if [ "$cpu" != generic ]; then
4401     add_cflags  $cpuflags
4402     add_asflags $cpuflags
4403     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4404 fi
4405
4406 # compiler sanity check
4407 check_exec <<EOF
4408 int main(void){ return 0; }
4409 EOF
4410 if test "$?" != 0; then
4411     echo "$cc is unable to create an executable file."
4412     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4413         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4414         echo "Only do this if you know what cross compiling means."
4415     fi
4416     die "C compiler test failed."
4417 fi
4418
4419 add_cppflags -D_ISOC99_SOURCE
4420 add_cxxflags -D__STDC_CONSTANT_MACROS
4421 check_cflags -std=c99
4422 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4423 #include <stdlib.h>
4424 EOF
4425 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4426 #include <stdlib.h>
4427 EOF
4428
4429 add_host_cppflags -D_ISOC99_SOURCE
4430 check_host_cflags -std=c99
4431 check_host_cflags -Wall
4432 check_host_cflags -O3
4433
4434 check_64bit(){
4435     arch32=$1
4436     arch64=$2
4437     expr=$3
4438     check_code cc "" "int test[2*($expr) - 1]" &&
4439         subarch=$arch64 || subarch=$arch32
4440 }
4441
4442 case "$arch" in
4443     aarch64|alpha|ia64)
4444         spic=$shared
4445     ;;
4446     mips)
4447         check_64bit mips mips64 '_MIPS_SIM > 1'
4448         spic=$shared
4449     ;;
4450     parisc)
4451         check_64bit parisc parisc64 'sizeof(void *) > 4'
4452         spic=$shared
4453     ;;
4454     ppc)
4455         check_64bit ppc ppc64 'sizeof(void *) > 4'
4456         spic=$shared
4457     ;;
4458     s390)
4459         check_64bit s390 s390x 'sizeof(void *) > 4'
4460         spic=$shared
4461     ;;
4462     sparc)
4463         check_64bit sparc sparc64 'sizeof(void *) > 4'
4464         spic=$shared
4465     ;;
4466     x86)
4467         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4468         # Treat x32 as x64 for now. Note it also needs spic=$shared
4469         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4470             subarch=x86_64
4471         if test "$subarch" = "x86_64"; then
4472             spic=$shared
4473         fi
4474     ;;
4475     ppc)
4476         check_cc <<EOF && subarch="ppc64"
4477         int test[(int)sizeof(char*) - 7];
4478 EOF
4479     ;;
4480 esac
4481
4482 enable $subarch
4483 enabled spic && enable_weak pic
4484
4485 # OS specific
4486 case $target_os in
4487     aix)
4488         SHFLAGS=-shared
4489         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4490         enabled shared && add_ldflags -Wl,-brtl
4491         ;;
4492     android)
4493         disable symver
4494         enable section_data_rel_ro
4495         SLIB_INSTALL_NAME='$(SLIBNAME)'
4496         SLIB_INSTALL_LINKS=
4497         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4498         ;;
4499     haiku)
4500         prefix_default="/boot/common"
4501         network_extralibs="-lnetwork"
4502         host_libs=
4503         ;;
4504     sunos)
4505         SHFLAGS='-shared -Wl,-h,$$(@F)'
4506         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4507         network_extralibs="-lsocket -lnsl"
4508         add_cppflags -D__EXTENSIONS__
4509         # When using suncc to build, the Solaris linker will mark
4510         # an executable with each instruction set encountered by
4511         # the Solaris assembler.  As our libraries contain their own
4512         # guards for processor-specific code, instead suppress
4513         # generation of the HWCAPS ELF section on Solaris x86 only.
4514         enabled_all suncc x86 &&
4515             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4516             add_ldflags -Wl,-M,mapfile
4517         nm_default='nm -P -g'
4518         SLIB_CREATE_DEF_CMD='$(Q)perl $(SRC_PATH)/compat/solaris/make_sunver.pl $$(filter %.ver,$$^) $(OBJS) | grep -v @ > $(SUBDIR)lib$(NAME).ver-sol2'
4519         ;;
4520     netbsd)
4521         disable symver
4522         oss_indev_extralibs="-lossaudio"
4523         oss_outdev_extralibs="-lossaudio"
4524         enabled gcc || check_ldflags -Wl,-zmuldefs
4525         ;;
4526     openbsd|bitrig)
4527         disable symver
4528         SHFLAGS='-shared'
4529         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4530         SLIB_INSTALL_LINKS=
4531         oss_indev_extralibs="-lossaudio"
4532         oss_outdev_extralibs="-lossaudio"
4533         ;;
4534     dragonfly)
4535         disable symver
4536         ;;
4537     freebsd)
4538         ;;
4539     bsd/os)
4540         add_extralibs -lpoll -lgnugetopt
4541         strip="strip -d"
4542         ;;
4543     darwin)
4544         enabled ppc && add_asflags -force_cpusubtype_ALL
4545         install_name_dir_default='$(SHLIBDIR)'
4546         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4547         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4548         strip="${strip} -x"
4549         add_ldflags -Wl,-dynamic,-search_paths_first
4550         SLIBSUF=".dylib"
4551         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4552         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4553         objformat="macho"
4554         enabled x86_64 && objformat="macho64"
4555         enabled_any pic shared x86_64 ||
4556             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4557         check_header dispatch/dispatch.h
4558         ;;
4559     msys*)
4560         die "Native MSYS builds are discouraged, please use the MINGW environment.";
4561         ;;
4562     mingw32*|mingw64*)
4563         if test $target_os = "mingw32ce"; then
4564             disable network
4565         else
4566             target_os=mingw32
4567         fi
4568         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4569         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4570         LIBTARGET=i386
4571         if enabled x86_64; then
4572             LIBTARGET="i386:x86-64"
4573         elif enabled arm; then
4574             LIBTARGET=arm-wince
4575         fi
4576         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4577         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4578         shlibdir_default="$bindir_default"
4579         SLIBPREF=""
4580         SLIBSUF=".dll"
4581         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4582         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4583         dlltool="${cross_prefix}dlltool"
4584         if check_cmd lib.exe -list; then
4585             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4586             if enabled x86_64; then
4587                 LIBTARGET=x64
4588             fi
4589         elif check_cmd $dlltool --version; then
4590             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4591         fi
4592         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4593         SLIB_INSTALL_LINKS=
4594         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4595         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4596         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4597         objformat="win32"
4598         ranlib=:
4599         enable dos_paths
4600         check_ldflags -Wl,--nxcompat,--dynamicbase
4601         # Lets work around some stupidity in binutils.
4602         # ld will strip relocations from executables even though we need them
4603         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4604         # however ld then forgets what the entry point should be (oops) so we
4605         # have to manually (re)set it.
4606         if enabled x86_32; then
4607             add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4608         elif enabled x86_64; then
4609             add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4610             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4611             # Set image base >4GB for extra entropy with HEASLR
4612             add_ldexeflags -Wl,--image-base,0x140000000
4613             append SHFLAGS -Wl,--image-base,0x180000000
4614         fi
4615         ;;
4616     win32|win64)
4617         disable symver
4618         if enabled shared; then
4619             # Link to the import library instead of the normal static library
4620             # for shared libs.
4621             LD_LIB='%.lib'
4622             # Cannot build both shared and static libs with MSVC or icl.
4623             disable static
4624         fi
4625         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4626         shlibdir_default="$bindir_default"
4627         SLIBPREF=""
4628         SLIBSUF=".dll"
4629         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4630         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4631         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4632         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4633         SLIB_INSTALL_LINKS=
4634         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4635         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4636         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4637         objformat="win32"
4638         ranlib=:
4639         enable dos_paths
4640         ;;
4641     cygwin*)
4642         target_os=cygwin
4643         shlibdir_default="$bindir_default"
4644         SLIBPREF="cyg"
4645         SLIBSUF=".dll"
4646         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4647         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4648         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4649         SLIB_INSTALL_LINKS=
4650         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4651         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4652         objformat="win32"
4653         enable dos_paths
4654         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4655         ;;
4656     *-dos|freedos|opendos)
4657         network_extralibs="-lsocket"
4658         objformat="coff"
4659         enable dos_paths
4660         add_cppflags -U__STRICT_ANSI__
4661         ;;
4662     linux)
4663         enable dv1394
4664         enable section_data_rel_ro
4665         ;;
4666     irix*)
4667         target_os=irix
4668         ranlib="echo ignoring ranlib"
4669         ;;
4670     os/2*)
4671         strip="lxlite -CS"
4672         ln_s="cp -f"
4673         objformat="aout"
4674         add_cppflags -D_GNU_SOURCE
4675         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4676         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4677         LIBSUF="_s.a"
4678         SLIBPREF=""
4679         SLIBSUF=".dll"
4680         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4681         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4682         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4683             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4684             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4685             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4686             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4687         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4688             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4689         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4690         enable dos_paths
4691         enable_weak os2threads
4692         ;;
4693     gnu/kfreebsd)
4694         add_cppflags -D_BSD_SOURCE
4695         ;;
4696     gnu)
4697         ;;
4698     qnx)
4699         add_cppflags -D_QNX_SOURCE
4700         network_extralibs="-lsocket"
4701         ;;
4702     symbian)
4703         SLIBSUF=".dll"
4704         enable dos_paths
4705         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4706         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4707         add_ldflags -Wl,--target1-abs,--no-undefined \
4708                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4709                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4710         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4711                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4712                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4713         ;;
4714     osf1)
4715         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4716         ;;
4717     minix)
4718         ;;
4719     plan9)
4720         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4721                      -D_REENTRANT_SOURCE        \
4722                      -D_RESEARCH_SOURCE         \
4723                      -DFD_SETSIZE=96            \
4724                      -DHAVE_SOCK_OPTS
4725         add_compat strtod.o strtod=avpriv_strtod
4726         network_extralibs='-lbsd'
4727         exeobjs=compat/plan9/main.o
4728         disable ffserver
4729         cp_f='cp'
4730         ;;
4731     none)
4732         ;;
4733     *)
4734         die "Unknown OS '$target_os'."
4735         ;;
4736 esac
4737
4738 # test if creating links works
4739 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
4740 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
4741 mkdir "$link_dest"
4742 $ln_s "$link_dest" "$link_name"
4743 touch "$link_dest/test_file"
4744 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
4745     # create link to source path
4746     [ -e src ] && rm src
4747     $ln_s "$source_path" src
4748     source_link=src
4749 else
4750     # creating directory links doesn't work
4751     # fall back to using the full source path
4752     source_link="$source_path"
4753 fi
4754 # cleanup
4755 rm -r "$link_dest"
4756 rm -r "$link_name"
4757
4758 # determine libc flavour
4759
4760 probe_libc(){
4761     pfx=$1
4762     pfx_no_=${pfx%_}
4763     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4764     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4765         eval ${pfx}libc_type=uclibc
4766         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4767     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4768         eval ${pfx}libc_type=glibc
4769         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4770     # MinGW headers can be installed on Cygwin, so check for newlib first.
4771     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4772         eval ${pfx}libc_type=newlib
4773         add_${pfx}cppflags -U__STRICT_ANSI__
4774     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4775     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4776         eval ${pfx}libc_type=mingw64
4777         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4778             add_compat msvcrt/snprintf.o
4779             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4780         fi
4781         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4782         eval test \$${pfx_no_}cc_type = "gcc" &&
4783             add_${pfx}cppflags -D__printf__=__gnu_printf__
4784     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4785          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4786         eval ${pfx}libc_type=mingw32
4787         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4788             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4789             die "ERROR: MinGW32 runtime version must be >= 3.15."
4790         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4791         eval test \$${pfx_no_}cc_type = "gcc" &&
4792             add_${pfx}cppflags -D__printf__=__gnu_printf__
4793     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4794         eval ${pfx}libc_type=msvcrt
4795         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4796             if [ "$pfx" = host_ ]; then
4797                 add_host_cppflags -Dsnprintf=_snprintf
4798             else
4799                 add_compat strtod.o strtod=avpriv_strtod
4800                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4801                                              _snprintf=avpriv_snprintf  \
4802                                              vsnprintf=avpriv_vsnprintf
4803             fi
4804         fi
4805         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4806         # 0x601 by default unless something else is set by the user.
4807         # This can easily lead to us detecting functions only present
4808         # in such new versions and producing binaries requiring windows 7.0.
4809         # Therefore explicitly set the default to XP unless the user has
4810         # set something else on the command line.
4811         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4812         # family. For these cases, configure is free to use any functions
4813         # found in the SDK headers by default. (Alternatively, we could force
4814         # _WIN32_WINNT to 0x0602 in that case.)
4815         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4816             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4817 #ifdef WINAPI_FAMILY
4818 #include <winapifamily.h>
4819 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4820 #error not desktop
4821 #endif
4822 #endif
4823 EOF
4824     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4825         eval ${pfx}libc_type=klibc
4826     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4827         eval ${pfx}libc_type=bionic
4828     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4829         eval ${pfx}libc_type=solaris
4830         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4831     fi
4832     check_${pfx}cc <<EOF
4833 #include <time.h>
4834 void *v = localtime_r;
4835 EOF
4836 test "$?" != 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
4837 #include <time.h>
4838 void *v = localtime_r;
4839 EOF
4840
4841 }
4842
4843 probe_libc
4844 test -n "$libc_type" && enable libc_$libc_type
4845 probe_libc host_
4846 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4847
4848 case $libc_type in
4849     bionic)
4850         add_compat strtod.o strtod=avpriv_strtod
4851         ;;
4852 esac
4853
4854 # hacks for compiler/libc/os combinations
4855
4856 if enabled_all tms470 libc_glibc; then
4857     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4858     add_cppflags -D__USER_LABEL_PREFIX__=
4859     add_cppflags -D__builtin_memset=memset
4860     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4861     add_cflags   -pds=48    # incompatible redefinition of macro
4862 fi
4863
4864 if enabled_all ccc libc_glibc; then
4865     add_ldflags -Wl,-z,now  # calls to libots crash without this
4866 fi
4867
4868 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4869     add_cppflags '-I\$(SRC_PATH)/compat/float'
4870
4871 esc(){
4872     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4873 }
4874
4875 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4876
4877 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4878
4879 set_default libdir
4880 : ${shlibdir_default:="$libdir"}
4881 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
4882
4883 set_default $PATHS_LIST
4884 set_default nm
4885
4886 # we need to build at least one lib type
4887 if ! enabled_any static shared; then
4888     cat <<EOF
4889 At least one library type must be built.
4890 Specify --enable-static to build the static libraries or --enable-shared to
4891 build the shared libraries as well. To only build the shared libraries specify
4892 --disable-static in addition to --enable-shared.
4893 EOF
4894     exit 1;
4895 fi
4896
4897 die_license_disabled() {
4898     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4899 }
4900
4901 die_license_disabled_gpl() {
4902     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4903 }
4904
4905 die_license_disabled gpl frei0r
4906 die_license_disabled gpl libcdio
4907 die_license_disabled gpl librubberband
4908 die_license_disabled gpl libsmbclient
4909 die_license_disabled gpl libutvideo
4910 die_license_disabled gpl libvidstab
4911 die_license_disabled gpl libx264
4912 die_license_disabled gpl libx265
4913 die_license_disabled gpl libxavs
4914 die_license_disabled gpl libxvid
4915 die_license_disabled gpl x11grab
4916
4917 die_license_disabled nonfree cuda
4918 die_license_disabled nonfree libfaac
4919 die_license_disabled nonfree nvenc
4920 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4921 enabled gpl && die_license_disabled_gpl nonfree openssl
4922
4923 die_license_disabled version3 gmp
4924 die_license_disabled version3 libopencore_amrnb
4925 die_license_disabled version3 libopencore_amrwb
4926 die_license_disabled version3 libsmbclient
4927 die_license_disabled version3 libvo_amrwbenc
4928
4929 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4930
4931 disabled optimizations || check_cflags -fomit-frame-pointer
4932
4933 enable_weak_pic() {
4934     disabled pic && return
4935     enable pic
4936     add_cppflags -DPIC
4937     case "$target_os" in
4938     mingw*|cygwin*)
4939         ;;
4940     *)
4941         add_cflags -fPIC
4942         ;;
4943     esac
4944     add_asflags  -fPIC
4945 }
4946
4947 enabled pic && enable_weak_pic
4948
4949 check_cc <<EOF || die "Symbol mangling check failed."
4950 int ff_extern;
4951 EOF
4952 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4953 extern_prefix=${sym%%ff_extern*}
4954
4955 check_cc <<EOF && enable_weak inline_asm
4956 void foo(void) { __asm__ volatile ("" ::); }
4957 EOF
4958
4959 _restrict=
4960 for restrict_keyword in restrict __restrict__ __restrict; do
4961     check_cc <<EOF && _restrict=$restrict_keyword && break
4962 void foo(char * $restrict_keyword p);
4963 EOF
4964 done
4965
4966 check_cc <<EOF && enable pragma_deprecated
4967 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4968 EOF
4969
4970 check_cc <<EOF && enable attribute_packed
4971 struct { int x; } __attribute__((packed)) x;
4972 EOF
4973
4974 check_cc <<EOF && enable attribute_may_alias
4975 union { int x; } __attribute__((may_alias)) x;
4976 EOF
4977
4978 check_cc <<EOF || die "endian test failed"
4979 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4980 EOF
4981 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4982
4983 if ! enabled ppc64 || enabled bigendian; then
4984     disable vsx
4985 fi
4986
4987 check_gas() {
4988     log "check_gas using '$as' as AS"
4989     # :vararg is used on aarch64, arm and ppc altivec
4990     check_as <<EOF || return 1
4991 .macro m n, y:vararg=0
4992 \n: .int \y
4993 .endm
4994 m x
4995 EOF
4996     # .altmacro is only used in arm asm
4997     ! enabled arm || check_as <<EOF || return 1
4998 .altmacro
4999 EOF
5000     enable gnu_as
5001     return 0
5002 }
5003
5004 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5005     nogas=:
5006     enabled_any arm aarch64 && nogas=die
5007     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5008     as_noop=-v
5009
5010     case $as_type in
5011         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5012         gcc)  gaspp_as_type=gas ;;
5013         *)    gaspp_as_type=$as_type ;;
5014     esac
5015
5016     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5017
5018     test "${as#*gas-preprocessor.pl}" != "$as" ||
5019     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5020         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5021
5022     if ! check_gas ; then
5023         as=${gas:=$as}
5024         check_gas || \
5025             $nogas "GNU assembler not found, install/update gas-preprocessor"
5026     fi
5027
5028     check_as <<EOF && enable as_func
5029 .func test
5030 .endfunc
5031 EOF
5032 fi
5033
5034 check_inline_asm inline_asm_labels '"1:\n"'
5035
5036 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5037
5038 if enabled aarch64; then
5039     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5040     # internal assembler in clang 3.3 does not support this instruction
5041     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5042     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5043
5044     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5045
5046 elif enabled alpha; then
5047
5048     check_cflags -mieee
5049
5050 elif enabled arm; then
5051
5052     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5053
5054     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5055 float func(float a, float b){ return a+b; }
5056 EOF
5057
5058     enabled thumb && check_cflags -mthumb || check_cflags -marm
5059
5060     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5061         enable vfp_args
5062     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5063         enable vfp_args
5064     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5065         case "${cross_prefix:-$cc}" in
5066             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5067             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5068 __asm__ (".eabi_attribute 28, 1");
5069 int main(void) { return 0; }
5070 EOF
5071         esac
5072         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5073     fi
5074
5075     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5076     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5077     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5078     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5079     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5080     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5081     enabled setend  && check_insn setend  'setend be'
5082
5083     [ $target_os = linux ] || [ $target_os = android ] ||
5084         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5085             $ARCH_EXT_LIST_ARM
5086
5087     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5088
5089     check_as <<EOF && enable as_dn_directive
5090 ra .dn d0.i16
5091 .unreq ra
5092 EOF
5093
5094     # llvm's integrated assembler supports .object_arch from llvm 3.5
5095     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5096 .object_arch armv4
5097 EOF
5098
5099     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5100
5101 elif enabled mips; then
5102
5103     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5104     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5105     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5106
5107     # Enable minimum ISA based on selected options
5108     if enabled mips64; then
5109         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5110         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5111         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5112     else
5113         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5114         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5115         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5116         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5117     fi
5118
5119     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5120     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mfp64 -mmsa' && check_header msa.h || disable msa
5121     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5122     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5123
5124 elif enabled parisc; then
5125
5126     if enabled gcc; then
5127         case $($cc -dumpversion) in
5128             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5129         esac
5130     fi
5131
5132 elif enabled ppc; then
5133
5134     enable local_aligned_8 local_aligned_16 local_aligned_32
5135
5136     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5137     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5138     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5139     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5140
5141     # AltiVec flags: The FSF version of GCC differs from the Apple version
5142     if enabled altivec; then
5143         check_cflags -maltivec -mabi=altivec &&
5144         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5145         check_cflags -faltivec
5146
5147         # check if our compiler supports Motorola AltiVec C API
5148         check_cc <<EOF || disable altivec
5149 $inc_altivec_h
5150 int main(void) {
5151     vector signed int v1 = (vector signed int) { 0 };
5152     vector signed int v2 = (vector signed int) { 1 };
5153     v1 = vec_add(v1, v2);
5154     return 0;
5155 }
5156 EOF
5157
5158         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5159     fi
5160
5161     if enabled vsx; then
5162         check_cflags -mvsx &&
5163         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5164     fi
5165
5166     if enabled power8; then
5167         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5168     fi
5169
5170 elif enabled x86; then
5171
5172     check_builtin rdtsc    intrin.h   "__rdtsc()"
5173     check_builtin mm_empty mmintrin.h "_mm_empty()"
5174
5175     enable local_aligned_8 local_aligned_16 local_aligned_32
5176
5177     # check whether EBP is available on x86
5178     # As 'i' is stored on the stack, this program will crash
5179     # if the base pointer is used to access it because the
5180     # base pointer is cleared in the inline assembly code.
5181     check_exec_crash <<EOF && enable ebp_available
5182 volatile int i=0;
5183 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5184 return i;
5185 EOF
5186
5187     # check whether EBX is available on x86
5188     check_inline_asm ebx_available '""::"b"(0)' &&
5189         check_inline_asm ebx_available '"":::"%ebx"'
5190
5191     # check whether xmm clobbers are supported
5192     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5193
5194     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5195         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5196
5197     # check whether binutils is new enough to compile SSSE3/MMXEXT
5198     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5199     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5200
5201     if ! disabled_any asm mmx yasm; then
5202         if check_cmd $yasmexe --version; then
5203             enabled x86_64 && yasm_extra="-m amd64"
5204             yasm_debug="-g dwarf2"
5205         elif check_cmd nasm -v; then
5206             yasmexe=nasm
5207             yasm_debug="-g -F dwarf"
5208             if enabled x86_64; then
5209                 case "$objformat" in
5210                     elf)   objformat=elf64 ;;
5211                     win32) objformat=win64 ;;
5212                 esac
5213             fi
5214         fi
5215
5216         YASMFLAGS="-f $objformat $yasm_extra"
5217         enabled pic               && append YASMFLAGS "-DPIC"
5218         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5219         case "$objformat" in
5220             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5221         esac
5222
5223         check_yasm "movbe ecx, [5]" && enable yasm ||
5224             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5225         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5226         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5227         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5228         check_yasm "CPU amdnop" || disable cpunop
5229     fi
5230
5231     case "$cpu" in
5232         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5233             disable fast_clz
5234         ;;
5235     esac
5236
5237 fi
5238
5239 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5240
5241 check_ldflags -Wl,--as-needed
5242 check_ldflags -Wl,-z,noexecstack
5243
5244 if check_func dlopen; then
5245     ldl=
5246 elif check_func dlopen -ldl; then
5247     ldl=-ldl
5248 fi
5249
5250 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5251 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5252 frei0r_filter_extralibs='$ldl'
5253 frei0r_src_filter_extralibs='$ldl'
5254 ladspa_filter_extralibs='$ldl'
5255 nvenc_encoder_extralibs='$ldl'
5256
5257 if ! disabled network; then
5258     check_func getaddrinfo $network_extralibs
5259     check_func inet_aton $network_extralibs
5260
5261     check_type netdb.h "struct addrinfo"
5262     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5263     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5264     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5265     check_type poll.h "struct pollfd"
5266     check_type netinet/sctp.h "struct sctp_event_subscribe"
5267     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5268     check_type netinet/in.h "struct sockaddr_in6"
5269     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5270     check_type "sys/types.h sys/socket.h" socklen_t
5271
5272     # Prefer arpa/inet.h over winsock2
5273     if check_header arpa/inet.h ; then
5274         check_func closesocket
5275     elif check_header winsock2.h ; then
5276         check_func_headers winsock2.h closesocket -lws2 &&
5277             network_extralibs="-lws2" ||
5278         { check_func_headers winsock2.h closesocket -lws2_32 &&
5279             network_extralibs="-lws2_32"; } || disable winsock2_h network
5280         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5281
5282         check_type ws2tcpip.h socklen_t
5283         check_type ws2tcpip.h "struct addrinfo"
5284         check_type ws2tcpip.h "struct group_source_req"
5285         check_type ws2tcpip.h "struct ip_mreq_source"
5286         check_type ws2tcpip.h "struct ipv6_mreq"
5287         check_type winsock2.h "struct pollfd"
5288         check_struct winsock2.h "struct sockaddr" sa_len
5289         check_type ws2tcpip.h "struct sockaddr_in6"
5290         check_type ws2tcpip.h "struct sockaddr_storage"
5291     else
5292         disable network
5293     fi
5294 fi
5295
5296 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5297 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
5298 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5299 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5300 check_builtin sarestart signal.h "SA_RESTART"
5301 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5302 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5303 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5304 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5305
5306 case "$custom_allocator" in
5307     jemalloc)
5308         # jemalloc by default does not use a prefix
5309         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5310     ;;
5311     tcmalloc)
5312         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5313         malloc_prefix=tc_
5314     ;;
5315 esac
5316
5317 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5318 check_func  ${malloc_prefix}memalign            && enable memalign
5319 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5320
5321 check_func  access
5322 check_func  arc4random
5323 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5324 check_func  fcntl
5325 check_func  fork
5326 check_func  gethrtime
5327 check_func  getopt
5328 check_func  getrusage
5329 check_func  gettimeofday
5330 check_func  isatty
5331 check_func  mach_absolute_time
5332 check_func  mkstemp
5333 check_func  mmap
5334 check_func  mprotect
5335 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5336 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5337 check_func  sched_getaffinity
5338 check_func  setrlimit
5339 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5340 check_func  strerror_r
5341 check_func  sysconf
5342 check_func  sysctl
5343 check_func  usleep
5344
5345 check_func_headers conio.h kbhit
5346 check_func_headers io.h setmode
5347 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5348 check_func_headers stdlib.h getenv
5349 check_func_headers sys/stat.h lstat
5350
5351 check_func_headers windows.h CoTaskMemFree -lole32
5352 check_func_headers windows.h GetProcessAffinityMask
5353 check_func_headers windows.h GetProcessTimes
5354 check_func_headers windows.h GetSystemTimeAsFileTime
5355 check_func_headers windows.h MapViewOfFile
5356 check_func_headers windows.h PeekNamedPipe
5357 check_func_headers windows.h SetConsoleTextAttribute
5358 check_func_headers windows.h SetConsoleCtrlHandler
5359 check_func_headers windows.h Sleep
5360 check_func_headers windows.h VirtualAlloc
5361 check_struct windows.h "CONDITION_VARIABLE" Ptr
5362 check_func_headers glob.h glob
5363 enabled xlib &&
5364     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5365
5366 check_header direct.h
5367 check_header dirent.h
5368 check_header dlfcn.h
5369 check_header d3d11.h
5370 check_header dxva.h
5371 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5372 check_header io.h
5373 check_header libcrystalhd/libcrystalhd_if.h
5374 check_header mach/mach_time.h
5375 check_header malloc.h
5376 check_header net/udplite.h
5377 check_header poll.h
5378 check_header sys/mman.h
5379 check_header sys/param.h
5380 check_header sys/resource.h
5381 check_header sys/select.h
5382 check_header sys/time.h
5383 check_header sys/un.h
5384 check_header termios.h
5385 check_header unistd.h
5386 check_header valgrind/valgrind.h
5387 check_header vdpau/vdpau.h
5388 check_header vdpau/vdpau_x11.h
5389 check_header VideoDecodeAcceleration/VDADecoder.h
5390 check_header VideoToolbox/VideoToolbox.h
5391 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5392 check_header windows.h
5393 check_header X11/extensions/XvMClib.h
5394 check_header asm/types.h
5395
5396 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
5397 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
5398 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
5399 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5400
5401 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5402
5403 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5404 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5405 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5406 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5407 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5408
5409 check_type "va/va.h" "VAPictureParameterBufferHEVC"
5410 check_type "va/va.h" "VADecPictureParameterBufferVP9"
5411
5412 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5413
5414 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5415
5416 if ! disabled w32threads && ! enabled pthreads; then
5417     check_func_headers "windows.h process.h" _beginthreadex &&
5418         enable w32threads || disable w32threads
5419     if ! enabled w32threads && enabled winrt; then
5420         check_func_headers "windows.h" CreateThread &&
5421             enable w32threads || disable w32threads
5422     fi
5423 fi
5424
5425 # check for some common methods of building with pthread support
5426 # do this before the optional library checks as some of them require pthreads
5427 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5428     enable pthreads
5429     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5430         add_cflags -pthread
5431         add_extralibs -pthread
5432     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5433         add_cflags -pthreads
5434         add_extralibs -pthreads
5435     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5436         add_cflags -ldl -pthread
5437         add_extralibs -ldl -pthread
5438     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5439         add_extralibs -lpthreadGC2
5440     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5441         :
5442     elif ! check_func pthread_join && ! check_func pthread_create; then
5443         disable pthreads
5444     fi
5445     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5446 fi
5447
5448
5449 if enabled pthreads; then
5450   check_func pthread_cancel
5451 fi
5452
5453 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
5454 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
5455 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
5456
5457 check_lib math.h sin -lm && LIBM="-lm"
5458 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5459
5460 atan2f_args=2
5461 copysign_args=2
5462 hypot_args=2
5463 ldexpf_args=2
5464 powf_args=2
5465
5466 for func in $MATH_FUNCS; do
5467     eval check_mathfunc $func \${${func}_args:-1}
5468 done
5469
5470 for func in $COMPLEX_FUNCS; do
5471     eval check_complexfunc $func \${${func}_args:-1}
5472 done
5473
5474 # these are off by default, so fail if requested and not available
5475 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5476 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5477                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5478 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
5479                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
5480                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
5481 enabled cuda              && check_lib cuda.h cuInit -lcuda
5482 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5483 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
5484 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5485 enabled gmp               && require2 gmp gmp.h mpz_export -lgmp
5486 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5487 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
5488                                check_lib2 "dlfcn.h" dlopen -ldl; }
5489 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5490 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5491 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5492 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5493 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5494 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5495                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5496                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5497 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5498 enabled libdcadec         && require_pkg_config "dcadec >= 0.1.0" libdcadec/dca_context.h dcadec_context_create
5499 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
5500 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5501                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5502                                  warn "using libfdk without pkg-config"; } }
5503 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"
5504 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5505 enabled fontconfig        && enable libfontconfig
5506 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5507 enabled libfreetype       && require_libfreetype
5508 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5509 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5510 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5511                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5512                                done || die "ERROR: libgsm not found"; }
5513 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5514 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5515 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5516 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5517 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5518 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5519 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5520 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5521 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5522                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5523                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5524                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5525 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5526 enabled libopenjpeg       && { check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC ||
5527                                check_lib openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC ||
5528                                check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5529                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5530                                die "ERROR: libopenjpeg not found"; }
5531 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5532 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5533 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5534 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5535 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5536 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5537 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5538                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5539 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5540 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5541 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5542 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5543 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5544 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5545 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5546                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5547                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5548 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
5549 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5550 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5551 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5552 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5553
5554 enabled libvpx            && {
5555     enabled libvpx_vp8_decoder && {
5556         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5557             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5558                 die "ERROR: libvpx decoder version must be >=0.9.1";
5559     }
5560     enabled libvpx_vp8_encoder && {
5561         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5562             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5563                 die "ERROR: libvpx encoder version must be >=0.9.7";
5564     }
5565     enabled libvpx_vp9_decoder && {
5566         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5567             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5568                 disable libvpx_vp9_decoder;
5569     }
5570     enabled libvpx_vp9_encoder && {
5571         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5572             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5573                 disable libvpx_vp9_encoder;
5574     }
5575     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5576         die "libvpx enabled but no supported decoders found"
5577     fi
5578 }
5579
5580 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5581 enabled libwebp           && {
5582     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5583     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5584 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5585                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5586                                  warn "using libx264 without pkg-config"; } } &&
5587                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5588                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5589                              { check_cpp_condition x264.h "X264_MPEG2" &&
5590                                enable libx262; }
5591 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5592                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5593                                die "ERROR: libx265 version must be >= 68."; }
5594 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5595 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5596 enabled libzimg           && require_pkg_config zimg zimg.h zimg_get_api_version
5597 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5598 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5599                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5600                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5601 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5602 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5603                                 { ! enabled cross_compile && {
5604                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5605                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5606                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5607                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5608                                die "ERROR: mmal not found"; }
5609 enabled mmal &&
5610     (check_code cc interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS" ||
5611      die "ERROR: mmal firmware headers too old")
5612
5613 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5614 enabled nvenc             && { check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."; } &&
5615                              { check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6" ||
5616                                die "ERROR: NVENC API version 5 or older is not supported"; } &&
5617                              { [ $target_os != cygwin ] || die "ERROR: NVENC is not supported on Cygwin currently."; }
5618 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5619                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5620                                die "ERROR: openal not found"; } &&
5621                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5622                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5623 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5624                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5625                                die "ERROR: opencl not found"; } &&
5626                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5627                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5628                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5629 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5630                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5631                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5632                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5633                                die "ERROR: opengl not found."
5634                              }
5635 enabled openssl           && { use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5636                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5637                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5638                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5639                                die "ERROR: openssl not found"; }
5640 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5641
5642 # libdc1394 check
5643 if enabled libdc1394; then
5644     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5645         enable libdc1394_2; } ||
5646     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5647         enable libdc1394_1; } ||
5648     die "ERROR: No version of libdc1394 found "
5649 fi
5650
5651 if enabled gcrypt; then
5652     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5653     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5654         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5655         gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
5656         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
5657             die "ERROR: gcrypt not found"
5658         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
5659     else
5660         require2 gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5661     fi
5662 fi
5663
5664 if ! disabled sdl; then
5665     SDL_CONFIG="${cross_prefix}sdl-config"
5666     if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
5667         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5668         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5669         enable sdl
5670     else
5671         if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
5672             sdl_cflags=$("${SDL_CONFIG}" --cflags)
5673             sdl_libs=$("${SDL_CONFIG}" --libs)
5674             check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
5675             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5676             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5677             enable sdl
5678         elif enabled sdl ; then
5679             die "ERROR: SDL not found"
5680         else
5681             disable sdl
5682         fi
5683     fi
5684     if test $target_os = "mingw32"; then
5685         sdl_libs="$sdl_libs -mconsole"
5686     fi
5687 fi
5688 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
5689
5690 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5691     check_lib2 "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5692     enable securetransport; }
5693
5694 disabled schannel || { check_func_headers "windows.h Security.h" InitializeSecurityContext -DSECURITY_WIN32 -lSecur32 &&
5695                        enable schannel && add_extralibs -lSecur32; }
5696
5697 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5698 enabled makeinfo \
5699     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5700     && enable makeinfo_html || disable makeinfo_html
5701 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5702 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5703 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5704 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5705
5706 check_header linux/fb.h
5707 check_header linux/videodev.h
5708 check_header linux/videodev2.h
5709 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5710
5711 check_header sys/videoio.h
5712 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5713
5714 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5715 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5716 # w32api 3.12 had it defined wrong
5717 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5718
5719 check_type "dshow.h" IBaseFilter
5720
5721 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5722 { check_header dev/bktr/ioctl_meteor.h &&
5723   check_header dev/bktr/ioctl_bt848.h; } ||
5724 { check_header machine/ioctl_meteor.h &&
5725   check_header machine/ioctl_bt848.h; } ||
5726 { check_header dev/video/meteor/ioctl_meteor.h &&
5727   check_header dev/video/bktr/ioctl_bt848.h; } ||
5728 check_header dev/ic/bt8xx.h
5729
5730 check_header sndio.h
5731 if check_struct sys/soundcard.h audio_buf_info bytes; then
5732     enable_safe sys/soundcard.h
5733 else
5734     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5735     #include <sys/soundcard.h>
5736     audio_buf_info abc;
5737 EOF
5738 fi
5739 check_header soundcard.h
5740
5741 enabled_any alsa_indev alsa_outdev &&
5742     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5743
5744 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
5745     check_func jack_port_get_latency_range -ljack
5746
5747 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
5748
5749 if enabled libcdio; then
5750     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5751     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5752     die "ERROR: No usable libcdio/cdparanoia found"
5753 fi
5754
5755 enabled xlib &&
5756     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
5757
5758 if ! disabled libxcb; then
5759     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
5760         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
5761     } && disable x11grab && enable libxcb
5762
5763 if enabled libxcb; then
5764     disabled libxcb_shm || {
5765         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
5766             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
5767         } && check_header sys/shm.h && enable libxcb_shm; }
5768
5769     disabled libxcb_xfixes || {
5770         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
5771             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
5772         } && enable libxcb_xfixes; }
5773
5774     disabled libxcb_shape || {
5775         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
5776             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
5777         } && enable libxcb_shape; }
5778
5779     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
5780     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
5781 fi
5782 fi
5783
5784 if enabled x11grab; then
5785     enabled xlib || die "ERROR: Xlib not found"
5786     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
5787     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
5788 fi
5789
5790 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
5791
5792 enabled dxva2api_h &&
5793     check_cc <<EOF && enable dxva2api_cobj
5794 #define _WIN32_WINNT 0x0600
5795 #define COBJMACROS
5796 #include <windows.h>
5797 #include <d3d9.h>
5798 #include <dxva2api.h>
5799 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
5800 EOF
5801
5802 enabled vaapi &&
5803     check_lib va/va.h vaInitialize -lva ||
5804     disable vaapi
5805
5806 enabled vaapi && enabled xlib &&
5807     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
5808     enable vaapi_x11
5809
5810 enabled vdpau &&
5811     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
5812     disable vdpau
5813
5814 enabled vdpau && enabled xlib &&
5815     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
5816     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
5817     enable vdpau_x11
5818
5819 # Funny iconv installations are not unusual, so check it after all flags have been set
5820 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
5821
5822 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
5823
5824 # add some useful compiler flags if supported
5825 check_cflags -Wdeclaration-after-statement
5826 check_cflags -Wall
5827 check_cflags -Wdisabled-optimization
5828 check_cflags -Wpointer-arith
5829 check_cflags -Wredundant-decls
5830 check_cflags -Wwrite-strings
5831 check_cflags -Wtype-limits
5832 check_cflags -Wundef
5833 check_cflags -Wmissing-prototypes
5834 check_cflags -Wno-pointer-to-int-cast
5835 check_cflags -Wstrict-prototypes
5836 check_cflags -Wempty-body
5837 enabled extra_warnings && check_cflags -Winline
5838 enabled extra_warnings && check_cflags -Wcast-qual
5839
5840 check_disable_warning(){
5841     warning_flag=-W${1#-Wno-}
5842     test_cflags $warning_flag && add_cflags $1
5843 }
5844
5845 check_disable_warning -Wno-parentheses
5846 check_disable_warning -Wno-switch
5847 check_disable_warning -Wno-format-zero-length
5848 check_disable_warning -Wno-pointer-sign
5849 check_disable_warning -Wno-unused-const-variable
5850
5851 # add some linker flags
5852 check_ldflags -Wl,--warn-common
5853 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
5854 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
5855 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
5856 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
5857
5858 # add some strip flags
5859 # -wN '..@*' is more selective than -x, but not available everywhere.
5860 check_stripflags -wN \'..@*\' || check_stripflags -x
5861
5862 enabled neon_clobber_test &&
5863     check_ldflags -Wl,--wrap,avcodec_open2              \
5864                   -Wl,--wrap,avcodec_decode_audio4      \
5865                   -Wl,--wrap,avcodec_decode_video2      \
5866                   -Wl,--wrap,avcodec_decode_subtitle2   \
5867                   -Wl,--wrap,avcodec_encode_audio2      \
5868                   -Wl,--wrap,avcodec_encode_video2      \
5869                   -Wl,--wrap,avcodec_encode_subtitle    \
5870                   -Wl,--wrap,swr_convert                \
5871                   -Wl,--wrap,avresample_convert ||
5872     disable neon_clobber_test
5873
5874 enabled xmm_clobber_test &&
5875     check_ldflags -Wl,--wrap,avcodec_open2              \
5876                   -Wl,--wrap,avcodec_decode_audio4      \
5877                   -Wl,--wrap,avcodec_decode_video2      \
5878                   -Wl,--wrap,avcodec_decode_subtitle2   \
5879                   -Wl,--wrap,avcodec_encode_audio2      \
5880                   -Wl,--wrap,avcodec_encode_video2      \
5881                   -Wl,--wrap,avcodec_encode_subtitle    \
5882                   -Wl,--wrap,swr_convert                \
5883                   -Wl,--wrap,avresample_convert         \
5884                   -Wl,--wrap,sws_scale ||
5885     disable xmm_clobber_test
5886
5887 echo "X { local: *; };" > $TMPV
5888 if test_ldflags -Wl,--version-script,$TMPV; then
5889     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
5890 elif test_ldflags -Wl,-M,$TMPV; then
5891     append SHFLAGS '-Wl,-M,\$(SUBDIR)lib\$(NAME).ver-sol2'
5892 fi
5893
5894 check_cc <<EOF && enable symver_asm_label
5895 void ff_foo(void) __asm__ ("av_foo@VERSION");
5896 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
5897 EOF
5898     check_cc <<EOF && enable symver_gnu_asm
5899 __asm__(".symver ff_foo,av_foo@VERSION");
5900 void ff_foo(void) {}
5901 EOF
5902
5903 if [ -z "$optflags" ]; then
5904     if enabled small; then
5905         optflags=$cflags_size
5906     elif enabled optimizations; then
5907         optflags=$cflags_speed
5908     else
5909         optflags=$cflags_noopt
5910     fi
5911 fi
5912
5913 check_optflags(){
5914     check_cflags "$@"
5915     enabled lto && check_ldflags "$@"
5916 }
5917
5918
5919 if enabled lto; then
5920     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
5921     check_cflags  -flto
5922     check_ldflags -flto $cpuflags
5923     disable inline_asm_direct_symbol_refs
5924 fi
5925
5926 check_optflags $optflags
5927 check_optflags -fno-math-errno
5928 check_optflags -fno-signed-zeros
5929
5930 enabled ftrapv && check_cflags -ftrapv
5931
5932 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
5933 int x;
5934 EOF
5935
5936
5937 if enabled icc; then
5938     # Just warnings, no remarks
5939     check_cflags -w1
5940     # -wd: Disable following warnings
5941     # 144, 167, 556: -Wno-pointer-sign
5942     # 188: enumerated type mixed with another type
5943     # 1292: attribute "foo" ignored
5944     # 1419: external declaration in primary source file
5945     # 10006: ignoring unknown option -fno-signed-zeros
5946     # 10148: ignoring unknown option -Wno-parentheses
5947     # 10156: ignoring option '-W'; no argument required
5948     # 13200: No EMMS instruction before call to function
5949     # 13203: No EMMS instruction before return from function
5950     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
5951     # 11030: Warning unknown option --as-needed
5952     # 10156: ignoring option '-export'; no argument required
5953     check_ldflags -wd10156,11030
5954     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
5955     enable ebp_available
5956     # The test above does not test linking
5957     enabled lto && disable symver_asm_label
5958     if enabled x86_32; then
5959         icc_version=$($cc -dumpversion)
5960         test ${icc_version%%.*} -ge 11 &&
5961             check_cflags -falign-stack=maintain-16-byte ||
5962             disable aligned_stack
5963     fi
5964 elif enabled ccc; then
5965     # disable some annoying warnings
5966     add_cflags -msg_disable bitnotint
5967     add_cflags -msg_disable mixfuncvoid
5968     add_cflags -msg_disable nonstandcast
5969     add_cflags -msg_disable unsupieee
5970 elif enabled gcc; then
5971     case $gcc_basever in
5972         4.9*) enabled x86 || check_optflags -fno-tree-vectorize ;;
5973         4.*)                 check_optflags -fno-tree-vectorize ;;
5974         *)    enabled x86 || check_optflags -fno-tree-vectorize ;;
5975     esac
5976     check_cflags -Werror=format-security
5977     check_cflags -Werror=implicit-function-declaration
5978     check_cflags -Werror=missing-prototypes
5979     check_cflags -Werror=return-type
5980     check_cflags -Werror=vla
5981     check_cflags -Wformat
5982     check_cflags -fdiagnostics-color=auto
5983     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
5984 elif enabled llvm_gcc; then
5985     check_cflags -mllvm -stack-alignment=16
5986 elif enabled clang; then
5987     check_cflags -mllvm -stack-alignment=16
5988     check_cflags -Qunused-arguments
5989     check_cflags -Werror=implicit-function-declaration
5990     check_cflags -Werror=missing-prototypes
5991     check_cflags -Werror=return-type
5992 elif enabled cparser; then
5993     add_cflags -Wno-missing-variable-declarations
5994     add_cflags -Wno-empty-statement
5995 elif enabled armcc; then
5996     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
5997     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
5998     # 2523: use of inline assembly is deprecated
5999     add_cflags -W${armcc_opt},--diag_suppress=2523
6000     add_cflags -W${armcc_opt},--diag_suppress=1207
6001     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6002     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6003     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6004     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6005 elif enabled tms470; then
6006     add_cflags -pds=824 -pds=837
6007     disable inline_asm
6008 elif enabled pathscale; then
6009     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6010 elif enabled_any msvc icl; then
6011     enabled x86_32 && disable aligned_stack
6012     enabled_all x86_32 debug && add_cflags -Oy-
6013     enabled debug && add_ldflags -debug
6014     enable pragma_deprecated
6015     if enabled icl; then
6016         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6017         # (correctly) on icl 13.x.
6018         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6019             add_cflags -Qansi-alias
6020         # Some inline asm is not compilable in debug
6021         if enabled debug; then
6022             disable ebp_available
6023             disable ebx_available
6024         fi
6025     fi
6026     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6027     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6028     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6029     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6030     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6031     # MSVC 2013 and newer can handle it fine.
6032     # If this declspec fails, force including stdlib.h before the restrict redefinition
6033     # happens in config.h.
6034     if [ $_restrict != restrict ]; then
6035         check_cc <<EOF || add_cflags -FIstdlib.h
6036 __declspec($_restrict) void* foo(int);
6037 EOF
6038     fi
6039     check_func strtoll || add_cflags -Dstrtoll=_strtoi64
6040 fi
6041
6042 for pfx in "" host_; do
6043     varname=${pfx%_}cc_type
6044     eval "type=\$$varname"
6045     if [ $type = "msvc" ]; then
6046         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6047 static inline int foo(int a) { return a; }
6048 EOF
6049     fi
6050 done
6051
6052 case $as_type in
6053     clang)
6054         add_asflags -Qunused-arguments
6055     ;;
6056 esac
6057
6058 case $ld_type in
6059     clang)
6060         check_ldflags -Qunused-arguments
6061     ;;
6062 esac
6063
6064 case $target_os in
6065     osf1)
6066         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6067     ;;
6068     plan9)
6069         add_cppflags -Dmain=plan9_main
6070     ;;
6071 esac
6072
6073 enable frame_thread_encoder
6074
6075 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6076
6077 check_deps $CONFIG_LIST       \
6078            $CONFIG_EXTRA      \
6079            $HAVE_LIST         \
6080            $ALL_COMPONENTS    \
6081
6082 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"
6083
6084
6085 if test $target_os = "haiku"; then
6086     disable memalign
6087     disable posix_memalign
6088 fi
6089
6090 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
6091     prepend ffmpeg_libs $($ldflags_filter "-lole32" "-luser32") &&
6092     enable dxva2_lib
6093
6094 ! enabled_any memalign posix_memalign aligned_malloc &&
6095     enabled simd_align_16 && enable memalign_hack
6096
6097 # add_dep lib dep
6098 # -> enable ${lib}_deps_${dep}
6099 # -> add $dep to ${lib}_deps only once
6100 add_dep() {
6101     lib=$1
6102     dep=$2
6103     enabled "${lib}_deps_${dep}" && return 0
6104     enable  "${lib}_deps_${dep}"
6105     prepend "${lib}_deps" $dep
6106 }
6107
6108 # merge deps lib components
6109 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6110 merge_deps() {
6111     lib=$1
6112     shift
6113     for comp in $*; do
6114         enabled $comp || continue
6115         eval "dep=\"\$${comp}_deps\""
6116         for d in $dep; do
6117             add_dep $lib $d
6118         done
6119     done
6120 }
6121
6122 merge_deps libavfilter $FILTER_LIST
6123
6124 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6125
6126 for thread in $THREADS_LIST; do
6127     if enabled $thread; then
6128         test -n "$thread_type" &&
6129             die "ERROR: Only one thread type must be selected." ||
6130             thread_type="$thread"
6131     fi
6132 done
6133
6134 enabled zlib && add_cppflags -DZLIB_CONST
6135
6136 # conditional library dependencies, in linking order
6137 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6138 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6139 enabled aresample_filter    && prepend avfilter_deps "swresample"
6140 enabled asyncts_filter      && prepend avfilter_deps "avresample"
6141 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6142 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6143 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6144 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6145 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6146 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6147 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6148 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6149 enabled pan_filter          && prepend avfilter_deps "swresample"
6150 enabled pp_filter           && prepend avfilter_deps "postproc"
6151 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6152 enabled resample_filter && prepend avfilter_deps "avresample"
6153 enabled sab_filter          && prepend avfilter_deps "swscale"
6154 enabled scale_filter    && prepend avfilter_deps "swscale"
6155 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6156 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6157 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6158 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6159 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6160 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6161 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6162 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6163 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6164
6165 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6166
6167 enabled opus_decoder    && prepend avcodec_deps "swresample"
6168
6169 expand_deps(){
6170     lib_deps=${1}_deps
6171     eval "deps=\$$lib_deps"
6172     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6173     unique $lib_deps
6174 }
6175
6176 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6177 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6178
6179 map 'expand_deps $v' $LIBRARY_LIST
6180
6181 echo "install prefix            $prefix"
6182 echo "source path               $source_path"
6183 echo "C compiler                $cc"
6184 echo "C library                 $libc_type"
6185 if test "$host_cc" != "$cc"; then
6186     echo "host C compiler           $host_cc"
6187     echo "host C library            $host_libc_type"
6188 fi
6189 echo "ARCH                      $arch ($cpu)"
6190 if test "$build_suffix" != ""; then
6191     echo "build suffix              $build_suffix"
6192 fi
6193 if test "$progs_suffix" != ""; then
6194     echo "progs suffix              $progs_suffix"
6195 fi
6196 if test "$extra_version" != ""; then
6197     echo "version string suffix     $extra_version"
6198 fi
6199 echo "big-endian                ${bigendian-no}"
6200 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6201 if enabled x86; then
6202     echo "${yasmexe}                      ${yasm-no}"
6203     echo "MMX enabled               ${mmx-no}"
6204     echo "MMXEXT enabled            ${mmxext-no}"
6205     echo "3DNow! enabled            ${amd3dnow-no}"
6206     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6207     echo "SSE enabled               ${sse-no}"
6208     echo "SSSE3 enabled             ${ssse3-no}"
6209     echo "AESNI enabled             ${aesni-no}"
6210     echo "AVX enabled               ${avx-no}"
6211     echo "XOP enabled               ${xop-no}"
6212     echo "FMA3 enabled              ${fma3-no}"
6213     echo "FMA4 enabled              ${fma4-no}"
6214     echo "i686 features enabled     ${i686-no}"
6215     echo "CMOV is fast              ${fast_cmov-no}"
6216     echo "EBX available             ${ebx_available-no}"
6217     echo "EBP available             ${ebp_available-no}"
6218 fi
6219 if enabled aarch64; then
6220     echo "NEON enabled              ${neon-no}"
6221     echo "VFP enabled               ${vfp-no}"
6222 fi
6223 if enabled arm; then
6224     echo "ARMv5TE enabled           ${armv5te-no}"
6225     echo "ARMv6 enabled             ${armv6-no}"
6226     echo "ARMv6T2 enabled           ${armv6t2-no}"
6227     echo "VFP enabled               ${vfp-no}"
6228     echo "NEON enabled              ${neon-no}"
6229     echo "THUMB enabled             ${thumb-no}"
6230 fi
6231 if enabled mips; then
6232     echo "MIPS FPU enabled          ${mipsfpu-no}"
6233     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6234     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6235     echo "MIPS MSA enabled          ${msa-no}"
6236     echo "LOONGSON MMI enabled      ${mmi-no}"
6237 fi
6238 if enabled ppc; then
6239     echo "AltiVec enabled           ${altivec-no}"
6240     echo "VSX enabled               ${vsx-no}"
6241     echo "POWER8 enabled            ${power8-no}"
6242     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6243     echo "dcbzl available           ${dcbzl-no}"
6244 fi
6245 echo "debug symbols             ${debug-no}"
6246 echo "strip symbols             ${stripping-no}"
6247 echo "optimize for size         ${small-no}"
6248 echo "optimizations             ${optimizations-no}"
6249 echo "static                    ${static-no}"
6250 echo "shared                    ${shared-no}"
6251 echo "postprocessing support    ${postproc-no}"
6252 echo "new filter support        ${avfilter-no}"
6253 echo "network support           ${network-no}"
6254 echo "threading support         ${thread_type-no}"
6255 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6256 echo "SDL support               ${sdl-no}"
6257 echo "opencl enabled            ${opencl-no}"
6258 echo "JNI support               ${jni-no}"
6259 echo "texi2html enabled         ${texi2html-no}"
6260 echo "perl enabled              ${perl-no}"
6261 echo "pod2man enabled           ${pod2man-no}"
6262 echo "makeinfo enabled          ${makeinfo-no}"
6263 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6264 test -n "$random_seed" &&
6265     echo "random seed               ${random_seed}"
6266 echo
6267
6268 echo "Enabled programs:"
6269 print_enabled '' $PROGRAM_LIST | print_in_columns
6270 echo
6271
6272 echo "External libraries:"
6273 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6274 echo
6275
6276 echo "Libraries:"
6277 print_enabled '' $LIBRARY_LIST | print_in_columns
6278 echo
6279
6280 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6281     echo "Enabled ${type}s:"
6282     eval list=\$$(toupper $type)_LIST
6283     print_enabled '_*' $list | print_in_columns
6284     echo
6285 done
6286
6287 license="LGPL version 2.1 or later"
6288 if enabled nonfree; then
6289     license="nonfree and unredistributable"
6290 elif enabled gplv3; then
6291     license="GPL version 3 or later"
6292 elif enabled lgplv3; then
6293     license="LGPL version 3 or later"
6294 elif enabled gpl; then
6295     license="GPL version 2 or later"
6296 fi
6297
6298 echo "License: $license"
6299
6300 echo "Creating config.mak, config.h, and doc/config.texi..."
6301
6302 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6303
6304 enabled stripping || strip="echo skipping strip"
6305
6306 config_files="$TMPH config.mak doc/config.texi"
6307
6308 cat > config.mak <<EOF
6309 # Automatically generated by configure - do not modify!
6310 ifndef FFMPEG_CONFIG_MAK
6311 FFMPEG_CONFIG_MAK=1
6312 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6313 prefix=$prefix
6314 LIBDIR=\$(DESTDIR)$libdir
6315 SHLIBDIR=\$(DESTDIR)$shlibdir
6316 INCDIR=\$(DESTDIR)$incdir
6317 BINDIR=\$(DESTDIR)$bindir
6318 DATADIR=\$(DESTDIR)$datadir
6319 DOCDIR=\$(DESTDIR)$docdir
6320 MANDIR=\$(DESTDIR)$mandir
6321 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6322 INSTALL_NAME_DIR=$install_name_dir
6323 SRC_PATH=$source_path
6324 SRC_LINK=$source_link
6325 ifndef MAIN_MAKEFILE
6326 SRC_PATH:=\$(SRC_PATH:.%=..%)
6327 endif
6328 CC_IDENT=$cc_ident
6329 ARCH=$arch
6330 INTRINSICS=$intrinsics
6331 CC=$cc
6332 CXX=$cxx
6333 AS=$as
6334 OBJCC=$objcc
6335 LD=$ld
6336 DEPCC=$dep_cc
6337 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6338 DEPAS=$as
6339 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6340 YASM=$yasmexe
6341 DEPYASM=$yasmexe
6342 AR=$ar
6343 ARFLAGS=$arflags
6344 AR_O=$ar_o
6345 RANLIB=$ranlib
6346 STRIP=$strip
6347 CP=cp -p
6348 LN_S=$ln_s
6349 CPPFLAGS=$CPPFLAGS
6350 CFLAGS=$CFLAGS
6351 CXXFLAGS=$CXXFLAGS
6352 OBJCFLAGS=$OBJCFLAGS
6353 ASFLAGS=$ASFLAGS
6354 AS_C=$AS_C
6355 AS_O=$AS_O
6356 OBJCC_C=$OBJCC_C
6357 OBJCC_E=$OBJCC_E
6358 OBJCC_O=$OBJCC_O
6359 CC_C=$CC_C
6360 CC_E=$CC_E
6361 CC_O=$CC_O
6362 CXX_C=$CXX_C
6363 CXX_O=$CXX_O
6364 LD_O=$LD_O
6365 LD_LIB=$LD_LIB
6366 LD_PATH=$LD_PATH
6367 DLLTOOL=$dlltool
6368 WINDRES=$windres
6369 DEPWINDRES=$dep_cc
6370 DOXYGEN=$doxygen
6371 LDFLAGS=$LDFLAGS
6372 LDEXEFLAGS=$LDEXEFLAGS
6373 LDLIBFLAGS=$LDLIBFLAGS
6374 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6375 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6376 YASMFLAGS=$YASMFLAGS
6377 BUILDSUF=$build_suffix
6378 PROGSSUF=$progs_suffix
6379 FULLNAME=$FULLNAME
6380 LIBPREF=$LIBPREF
6381 LIBSUF=$LIBSUF
6382 LIBNAME=$LIBNAME
6383 SLIBPREF=$SLIBPREF
6384 SLIBSUF=$SLIBSUF
6385 EXESUF=$EXESUF
6386 EXTRA_VERSION=$extra_version
6387 CCDEP=$CCDEP
6388 CXXDEP=$CXXDEP
6389 CCDEP_FLAGS=$CCDEP_FLAGS
6390 ASDEP=$ASDEP
6391 ASDEP_FLAGS=$ASDEP_FLAGS
6392 CC_DEPFLAGS=$CC_DEPFLAGS
6393 AS_DEPFLAGS=$AS_DEPFLAGS
6394 HOSTCC=$host_cc
6395 HOSTLD=$host_ld
6396 HOSTCFLAGS=$host_cflags
6397 HOSTCPPFLAGS=$host_cppflags
6398 HOSTEXESUF=$HOSTEXESUF
6399 HOSTLDFLAGS=$host_ldflags
6400 HOSTLIBS=$host_libs
6401 DEPHOSTCC=$host_cc
6402 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6403 HOSTCCDEP=$HOSTCCDEP
6404 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6405 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6406 HOSTCC_C=$HOSTCC_C
6407 HOSTCC_O=$HOSTCC_O
6408 HOSTLD_O=$HOSTLD_O
6409 TARGET_EXEC=$target_exec $target_exec_args
6410 TARGET_PATH=$target_path
6411 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6412 CFLAGS-ffplay=$sdl_cflags
6413 ZLIB=$($ldflags_filter -lz)
6414 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6415 EXTRALIBS=$extralibs
6416 COMPAT_OBJS=$compat_objs
6417 EXEOBJS=$exeobjs
6418 INSTALL=$install
6419 LIBTARGET=${LIBTARGET}
6420 SLIBNAME=${SLIBNAME}
6421 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6422 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6423 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6424 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6425 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6426 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6427 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6428 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6429 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6430 NOREDZONE_FLAGS=$noredzone_flags
6431 EOF
6432
6433 get_version(){
6434     lcname=lib${1}
6435     name=$(toupper $lcname)
6436     file=$source_path/$lcname/version.h
6437     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6438     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6439     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6440     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6441     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6442     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6443 }
6444
6445 map 'get_version $v' $LIBRARY_LIST
6446
6447 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6448
6449 print_program_libs(){
6450     eval "program_libs=\$${1}_libs"
6451     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6452 }
6453
6454 map 'print_program_libs $v' $PROGRAM_LIST
6455
6456 cat > $TMPH <<EOF
6457 /* Automatically generated by configure - do not modify! */
6458 #ifndef FFMPEG_CONFIG_H
6459 #define FFMPEG_CONFIG_H
6460 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6461 #define FFMPEG_LICENSE "$(c_escape $license)"
6462 #define CONFIG_THIS_YEAR 2016
6463 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6464 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6465 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6466 #define av_restrict $_restrict
6467 #define EXTERN_PREFIX "${extern_prefix}"
6468 #define EXTERN_ASM ${extern_prefix}
6469 #define BUILDSUF "$build_suffix"
6470 #define SLIBSUF "$SLIBSUF"
6471 #define HAVE_MMX2 HAVE_MMXEXT
6472 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6473 EOF
6474
6475 test -n "$assert_level" &&
6476     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6477
6478 test -n "$malloc_prefix" &&
6479     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6480
6481 if enabled yasm; then
6482     append config_files $TMPASM
6483     printf '' >$TMPASM
6484 fi
6485
6486 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6487
6488
6489 mkdir -p doc
6490 mkdir -p tests
6491 mkdir -p tests/api
6492 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6493
6494 print_config ARCH_   "$config_files" $ARCH_LIST
6495 print_config HAVE_   "$config_files" $HAVE_LIST
6496 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6497                                      $CONFIG_EXTRA      \
6498                                      $ALL_COMPONENTS    \
6499
6500 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6501 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6502
6503 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6504 cp_if_changed $TMPH config.h
6505 touch .config
6506
6507 enabled yasm && cp_if_changed $TMPASM config.asm
6508
6509 cat > $TMPH <<EOF
6510 /* Generated by ffconf */
6511 #ifndef AVUTIL_AVCONFIG_H
6512 #define AVUTIL_AVCONFIG_H
6513 EOF
6514
6515 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6516
6517 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6518
6519 cp_if_changed $TMPH libavutil/avconfig.h
6520
6521 if test -n "$WARNINGS"; then
6522     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6523     enabled fatal_warnings && exit 1
6524 fi
6525
6526 # build pkg-config files
6527
6528 lib_version(){
6529     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6530 }
6531
6532 pkgconfig_generate(){
6533     name=$1
6534     shortname=${name#lib}${build_suffix}
6535     comment=$2
6536     version=$3
6537     libs=$4
6538     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6539     requires=${requires%, }
6540     enabled ${name#lib} || return 0
6541     mkdir -p $name
6542     cat <<EOF > $name/$name${build_suffix}.pc
6543 prefix=$prefix
6544 exec_prefix=\${prefix}
6545 libdir=$libdir
6546 includedir=$incdir
6547
6548 Name: $name
6549 Description: $comment
6550 Version: $version
6551 Requires: $(enabled shared || echo $requires)
6552 Requires.private: $(enabled shared && echo $requires)
6553 Conflicts:
6554 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6555 Libs.private: $(enabled shared && echo $libs)
6556 Cflags: -I\${includedir}
6557 EOF
6558
6559 mkdir -p doc/examples/pc-uninstalled
6560 includedir=${source_path}
6561 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6562     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
6563 prefix=
6564 exec_prefix=
6565 libdir=\${pcfiledir}/../../../$name
6566 includedir=${includedir}
6567
6568 Name: $name
6569 Description: $comment
6570 Version: $version
6571 Requires: $requires
6572 Conflicts:
6573 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6574 Cflags: -I\${includedir}
6575 EOF
6576 }
6577
6578 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6579 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6580 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6581 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6582 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6583 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6584 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6585 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6586 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"