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
  95 Licensing options:
  96   --enable-gpl             allow use of GPL code, the resulting libs
  97                            and binaries will be under GPL [no]
  98   --enable-version3        upgrade (L)GPL to version 3 [no]
  99   --enable-nonfree         allow use of nonfree code, the resulting libs
 100                            and binaries will be unredistributable [no]
 101
 102 Configuration options:
 103   --disable-static         do not build static libraries [no]
 104   --enable-shared          build shared libraries [no]
 105   --enable-small           optimize for size instead of speed
 106   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
 107   --enable-gray            enable full grayscale support (slower color)
 108   --disable-swscale-alpha  disable alpha channel support in swscale
 109   --disable-all            disable building components, libraries and programs
 110   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
 111   --enable-raise-major     increase major version numbers in sonames [no]
 112
 113 Program options:
 114   --disable-programs       do not build command line programs
 115   --disable-ffmpeg         disable ffmpeg build
 116   --disable-ffplay         disable ffplay build
 117   --disable-ffprobe        disable ffprobe build
 118   --disable-ffserver       disable ffserver build
 119
 120 Documentation options:
 121   --disable-doc            do not build documentation
 122   --disable-htmlpages      do not build HTML documentation pages
 123   --disable-manpages       do not build man documentation pages
 124   --disable-podpages       do not build POD documentation pages
 125   --disable-txtpages       do not build text documentation pages
 126
 127 Component options:
 128   --disable-avdevice       disable libavdevice build
 129   --disable-avcodec        disable libavcodec build
 130   --disable-avformat       disable libavformat build
 131   --disable-swresample     disable libswresample build
 132   --disable-swscale        disable libswscale build
 133   --disable-postproc       disable libpostproc build
 134   --disable-avfilter       disable libavfilter build
 135   --enable-avresample      enable libavresample build [no]
 136   --disable-pthreads       disable pthreads [autodetect]
 137   --disable-w32threads     disable Win32 threads [autodetect]
 138   --disable-os2threads     disable OS/2 threads [autodetect]
 139   --disable-network        disable network support [no]
 140   --disable-dct            disable DCT code
 141   --disable-dwt            disable DWT code
 142   --disable-error-resilience disable error resilience code
 143   --disable-lsp            disable LSP code
 144   --disable-lzo            disable LZO decoder code
 145   --disable-mdct           disable MDCT code
 146   --disable-rdft           disable RDFT code
 147   --disable-fft            disable FFT code
 148   --disable-faan           disable floating point AAN (I)DCT code
 149   --disable-pixelutils     disable pixel utils in libavutil
 150
 151 Hardware accelerators:
 152   --disable-d3d11va        disable D3D11VA code [autodetect]
 153   --disable-dxva2          disable DXVA2 code [autodetect]
 154   --disable-vaapi          disable VAAPI code [autodetect]
 155   --disable-vda            disable VDA code [autodetect]
 156   --disable-vdpau          disable VDPAU code [autodetect]
 157   --enable-videotoolbox    enable VideoToolbox code [autodetect]
 158
 159 Individual component options:
 160   --disable-everything     disable all components listed below
 161   --disable-encoder=NAME   disable encoder NAME
 162   --enable-encoder=NAME    enable encoder NAME
 163   --disable-encoders       disable all encoders
 164   --disable-decoder=NAME   disable decoder NAME
 165   --enable-decoder=NAME    enable decoder NAME
 166   --disable-decoders       disable all decoders
 167   --disable-hwaccel=NAME   disable hwaccel NAME
 168   --enable-hwaccel=NAME    enable hwaccel NAME
 169   --disable-hwaccels       disable all hwaccels
 170   --disable-muxer=NAME     disable muxer NAME
 171   --enable-muxer=NAME      enable muxer NAME
 172   --disable-muxers         disable all muxers
 173   --disable-demuxer=NAME   disable demuxer NAME
 174   --enable-demuxer=NAME    enable demuxer NAME
 175   --disable-demuxers       disable all demuxers
 176   --enable-parser=NAME     enable parser NAME
 177   --disable-parser=NAME    disable parser NAME
 178   --disable-parsers        disable all parsers
 179   --enable-bsf=NAME        enable bitstream filter NAME
 180   --disable-bsf=NAME       disable bitstream filter NAME
 181   --disable-bsfs           disable all bitstream filters
 182   --enable-protocol=NAME   enable protocol NAME
 183   --disable-protocol=NAME  disable protocol NAME
 184   --disable-protocols      disable all protocols
 185   --enable-indev=NAME      enable input device NAME
 186   --disable-indev=NAME     disable input device NAME
 187   --disable-indevs         disable input devices
 188   --enable-outdev=NAME     enable output device NAME
 189   --disable-outdev=NAME    disable output device NAME
 190   --disable-outdevs        disable output devices
 191   --disable-devices        disable all devices
 192   --enable-filter=NAME     enable filter NAME
 193   --disable-filter=NAME    disable filter NAME
 194   --disable-filters        disable all filters
 195
 196 External library support:
 197   --enable-avisynth        enable reading of AviSynth script files [no]
 198   --disable-bzlib          disable bzlib [autodetect]
 199   --enable-cuda            enable dynamically linked CUDA [no]
 200   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 201   --enable-fontconfig      enable fontconfig, useful for drawtext filter [no]
 202   --enable-frei0r          enable frei0r video filtering [no]
 203   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 204                            if openssl, librtmp or gmp is not used [no]
 205   --enable-gmp             enable gmp, needed for rtmp(t)e support
 206                            if openssl or librtmp is not used [no]
 207   --enable-gnutls          enable gnutls, needed for https support
 208                            if openssl is not used [no]
 209   --disable-iconv          disable iconv [autodetect]
 210   --enable-ladspa          enable LADSPA audio filtering [no]
 211   --enable-libass          enable libass subtitles rendering,
 212                            needed for subtitles and ass filter [no]
 213   --enable-libbluray       enable BluRay reading using libbluray [no]
 214   --enable-libbs2b         enable bs2b DSP library [no]
 215   --enable-libcaca         enable textual display using libcaca [no]
 216   --enable-libcelt         enable CELT decoding via libcelt [no]
 217   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 218   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 219                            and libraw1394 [no]
 220   --enable-libdcadec       enable DCA decoding via libdcadec [no]
 221   --enable-libfaac         enable AAC encoding via libfaac [no]
 222   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 223   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 224   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 225   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 226   --enable-libgme          enable Game Music Emu via libgme [no]
 227   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 228   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 229   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 230   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 231   --enable-libmfx          enable HW acceleration through libmfx
 232   --enable-libmodplug      enable ModPlug via libmodplug [no]
 233   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 234   --enable-libnut          enable NUT (de)muxing via libnut,
 235                            native (de)muxer exists [no]
 236   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 237   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 238   --enable-libopencv       enable video filtering via libopencv [no]
 239   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 240   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 241   --enable-libopus         enable Opus de/encoding via libopus [no]
 242   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 243   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 244   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 245   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 246   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 247   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 248   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 249   --enable-libsoxr         enable Include libsoxr resampling [no]
 250   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 251   --enable-libssh          enable SFTP protocol via libssh [no]
 252   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 253   --enable-libtheora       enable Theora encoding via libtheora [no]
 254   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 255   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 256   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 257   --enable-libvidstab      enable video stabilization using vid.stab [no]
 258   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 259   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 260                            native implementation exists [no]
 261   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 262   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 263   --enable-libwebp         enable WebP encoding via libwebp [no]
 264   --enable-libx264         enable H.264 encoding via x264 [no]
 265   --enable-libx265         enable HEVC encoding via x265 [no]
 266   --enable-libxavs         enable AVS encoding via xavs [no]
 267   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 268   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 269   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 270   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 271   --enable-libxvid         enable Xvid encoding via xvidcore,
 272                            native MPEG-4/Xvid encoder exists [no]
 273   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 274   --enable-libzmq          enable message passing via libzmq [no]
 275   --enable-libzvbi         enable teletext support via libzvbi [no]
 276   --disable-lzma           disable lzma [autodetect]
 277   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 278   --enable-mmal            enable decoding via MMAL [no]
 279   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
 280   --enable-nvenc           enable NVIDIA NVENC support [no]
 281   --enable-openal          enable OpenAL 1.1 capture support [no]
 282   --enable-opencl          enable OpenCL code
 283   --enable-opengl          enable OpenGL rendering [no]
 284   --enable-openssl         enable openssl, needed for https support
 285                            if gnutls is not used [no]
 286   --disable-schannel       disable SChannel SSP, needed for TLS support on
 287                            Windows if openssl and gnutls are not used [autodetect]
 288   --disable-sdl            disable sdl [autodetect]
 289   --disable-securetransport disable Secure Transport, needed for TLS support
 290                            on OSX if openssl and gnutls are not used [autodetect]
 291   --enable-x11grab         enable X11 grabbing (legacy) [no]
 292   --disable-xlib           disable xlib [autodetect]
 293   --disable-zlib           disable zlib [autodetect]
 294
 295 Toolchain options:
 296   --arch=ARCH              select architecture [$arch]
 297   --cpu=CPU                select the minimum required CPU (affects
 298                            instruction selection, may crash on older CPUs)
 299   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 300   --progs-suffix=SUFFIX    program name suffix []
 301   --enable-cross-compile   assume a cross-compiler is used
 302   --sysroot=PATH           root of cross-build tree
 303   --sysinclude=PATH        location of cross-build system headers
 304   --target-os=OS           compiler targets OS [$target_os]
 305   --target-exec=CMD        command to run executables on target
 306   --target-path=DIR        path to view of build directory on target
 307   --target-samples=DIR     path to samples directory on target
 308   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 309   --toolchain=NAME         set tool defaults according to NAME
 310   --nm=NM                  use nm tool NM [$nm_default]
 311   --ar=AR                  use archive tool AR [$ar_default]
 312   --as=AS                  use assembler AS [$as_default]
 313   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 314   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 315   --cc=CC                  use C compiler CC [$cc_default]
 316   --cxx=CXX                use C compiler CXX [$cxx_default]
 317   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 318   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 319   --ld=LD                  use linker LD [$ld_default]
 320   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 321   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 322   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 323   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 324   --host-cc=HOSTCC         use host C compiler HOSTCC
 325   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 326   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 327   --host-ld=HOSTLD         use host linker HOSTLD
 328   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 329   --host-libs=HLIBS        use libs HLIBS when linking for host
 330   --host-os=OS             compiler host OS [$target_os]
 331   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 332   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 333   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 334   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 335   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 336   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 337   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 338   --extra-version=STRING   version string suffix []
 339   --optflags=OPTFLAGS      override optimization-related compiler flags
 340   --build-suffix=SUFFIX    library name suffix []
 341   --enable-pic             build position-independent code
 342   --enable-thumb           compile for Thumb instruction set
 343   --enable-lto             use link-time optimization
 344   --env="ENV=override"     override the environment variables
 345
 346 Advanced options (experts only):
 347   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 348   --custom-allocator=NAME  use a supported custom allocator
 349   --disable-symver         disable symbol versioning
 350   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 351   --disable-safe-bitstream-reader
 352                            disable buffer boundary checking in bitreaders
 353                            (faster, but may crash)
 354   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 355   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 356
 357 Optimization options (experts only):
 358   --disable-asm            disable all assembly optimizations
 359   --disable-altivec        disable AltiVec optimizations
 360   --disable-vsx            disable VSX optimizations
 361   --disable-power8         disable POWER8 optimizations
 362   --disable-amd3dnow       disable 3DNow! optimizations
 363   --disable-amd3dnowext    disable 3DNow! extended optimizations
 364   --disable-mmx            disable MMX optimizations
 365   --disable-mmxext         disable MMXEXT optimizations
 366   --disable-sse            disable SSE optimizations
 367   --disable-sse2           disable SSE2 optimizations
 368   --disable-sse3           disable SSE3 optimizations
 369   --disable-ssse3          disable SSSE3 optimizations
 370   --disable-sse4           disable SSE4 optimizations
 371   --disable-sse42          disable SSE4.2 optimizations
 372   --disable-avx            disable AVX optimizations
 373   --disable-xop            disable XOP optimizations
 374   --disable-fma3           disable FMA3 optimizations
 375   --disable-fma4           disable FMA4 optimizations
 376   --disable-avx2           disable AVX2 optimizations
 377   --disable-aesni          disable AESNI optimizations
 378   --disable-armv5te        disable armv5te optimizations
 379   --disable-armv6          disable armv6 optimizations
 380   --disable-armv6t2        disable armv6t2 optimizations
 381   --disable-vfp            disable VFP optimizations
 382   --disable-neon           disable NEON optimizations
 383   --disable-inline-asm     disable use of inline assembly
 384   --disable-yasm           disable use of nasm/yasm assembly
 385   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 386   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 387   --disable-msa            disable MSA optimizations
 388   --disable-mipsfpu        disable floating point MIPS optimizations
 389   --disable-mmi            disable Loongson SIMD optimizations
 390   --disable-fast-unaligned consider unaligned accesses slow
 391
 392 Developer options (useful when working on FFmpeg itself):
 393   --disable-debug          disable debugging symbols
 394   --enable-debug=LEVEL     set the debug level [$debuglevel]
 395   --disable-optimizations  disable compiler optimizations
 396   --enable-extra-warnings  enable more compiler warnings
 397   --disable-stripping      disable stripping of executables and shared libraries
 398   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 399                            2 causes a slowdown at runtime.
 400   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 401   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 402                            leaks and errors, using the specified valgrind binary.
 403                            Cannot be combined with --target-exec
 404   --enable-ftrapv          Trap arithmetic overflows
 405   --samples=PATH           location of test samples for FATE, if not set use
 406                            \$FATE_SAMPLES at make invocation time.
 407   --enable-neon-clobber-test check NEON registers for clobbering (should be
 408                            used only for debugging purposes)
 409   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 410                            should be used only for debugging purposes)
 411   --enable-random          randomly enable/disable components
 412   --disable-random
 413   --enable-random=LIST     randomly enable/disable specific components or
 414   --disable-random=LIST    component groups. LIST is a comma-separated list
 415                            of NAME[:PROB] entries where NAME is a component
 416                            (group) and PROB the probability associated with
 417                            NAME (default 0.5).
 418   --random-seed=VALUE      seed value for --enable/disable-random
 419   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 420                            (only applies to --disable-optimizations builds)
 421
 422 NOTE: Object files are built at the place where configure is launched.
 423 EOF
 424   exit 0
 425 }
 426
 427 quotes='""'
 428 if test -t 1 && which tput >/dev/null 2>&1; then
 429     ncolors=$(tput colors)
 430     if test -n "$ncolors" && test $ncolors -ge 8; then
 431         bold_color=$(tput bold)
 432         warn_color=$(tput setaf 3)
 433         error_color=$(tput setaf 1)
 434         reset_color=$(tput sgr0)
 435     fi
 436     # 72 used instead of 80 since that's the default of pr
 437     ncols=$(tput cols)
 438 fi
 439 : ${ncols:=72}
 440
 441 log(){
 442     echo "$@" >> $logfile
 443 }
 444
 445 log_file(){
 446     log BEGIN $1
 447     pr -n -t $1 >> $logfile
 448     log END $1
 449 }
 450
 451 warn(){
 452     log "WARNING: $*"
 453     WARNINGS="${WARNINGS}WARNING: $*\n"
 454 }
 455
 456 die(){
 457     log "$@"
 458     echo "$error_color$bold_color$@$reset_color"
 459     cat <<EOF
 460
 461 If you think configure made a mistake, make sure you are using the latest
 462 version from Git.  If the latest version fails, report the problem to the
 463 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 464 EOF
 465     if disabled logging; then
 466         cat <<EOF
 467 Rerun configure with logging enabled (do not use --disable-logging), and
 468 include the log this produces with your report.
 469 EOF
 470     else
 471         cat <<EOF
 472 Include the log file "$logfile" produced by configure as this will help
 473 solve the problem.
 474 EOF
 475     fi
 476     exit 1
 477 }
 478
 479 # Avoid locale weirdness, besides we really just want to translate ASCII.
 480 toupper(){
 481     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 482 }
 483
 484 tolower(){
 485     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 486 }
 487
 488 c_escape(){
 489     echo "$*" | sed 's/["\\]/\\\0/g'
 490 }
 491
 492 sh_quote(){
 493     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 494     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 495     echo "$v"
 496 }
 497
 498 cleanws(){
 499     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 500 }
 501
 502 filter(){
 503     pat=$1
 504     shift
 505     for v; do
 506         eval "case $v in $pat) echo $v ;; esac"
 507     done
 508 }
 509
 510 filter_out(){
 511     pat=$1
 512     shift
 513     for v; do
 514         eval "case $v in $pat) ;; *) echo $v ;; esac"
 515     done
 516 }
 517
 518 map(){
 519     m=$1
 520     shift
 521     for v; do eval $m; done
 522 }
 523
 524 add_suffix(){
 525     suffix=$1
 526     shift
 527     for v; do echo ${v}${suffix}; done
 528 }
 529
 530 set_all(){
 531     value=$1
 532     shift
 533     for var in $*; do
 534         eval $var=$value
 535     done
 536 }
 537
 538 set_weak(){
 539     value=$1
 540     shift
 541     for var; do
 542         eval : \${$var:=$value}
 543     done
 544 }
 545
 546 sanitize_var_name(){
 547     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 548 }
 549
 550 set_safe(){
 551     var=$1
 552     shift
 553     eval $(sanitize_var_name "$var")='$*'
 554 }
 555
 556 get_safe(){
 557     eval echo \$$(sanitize_var_name "$1")
 558 }
 559
 560 pushvar(){
 561     for pvar in $*; do
 562         eval level=\${${pvar}_level:=0}
 563         eval ${pvar}_${level}="\$$pvar"
 564         eval ${pvar}_level=$(($level+1))
 565     done
 566 }
 567
 568 popvar(){
 569     for pvar in $*; do
 570         eval level=\${${pvar}_level:-0}
 571         test $level = 0 && continue
 572         eval level=$(($level-1))
 573         eval $pvar="\${${pvar}_${level}}"
 574         eval ${pvar}_level=$level
 575         eval unset ${pvar}_${level}
 576     done
 577 }
 578
 579 enable(){
 580     set_all yes $*
 581 }
 582
 583 disable(){
 584     set_all no $*
 585 }
 586
 587 enable_weak(){
 588     set_weak yes $*
 589 }
 590
 591 disable_weak(){
 592     set_weak no $*
 593 }
 594
 595 enable_safe(){
 596     for var; do
 597         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 598     done
 599 }
 600
 601 disable_safe(){
 602     for var; do
 603         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 604     done
 605 }
 606
 607 do_enable_deep(){
 608     for var; do
 609         enabled $var && continue
 610         eval sel="\$${var}_select"
 611         eval sgs="\$${var}_suggest"
 612         pushvar var sgs
 613         enable_deep $sel
 614         popvar sgs
 615         enable_deep_weak $sgs
 616         popvar var
 617     done
 618 }
 619
 620 enable_deep(){
 621     do_enable_deep $*
 622     enable $*
 623 }
 624
 625 enable_deep_weak(){
 626     for var; do
 627         disabled $var && continue
 628         pushvar var
 629         do_enable_deep $var
 630         popvar var
 631         enable_weak $var
 632     done
 633 }
 634
 635 enabled(){
 636     test "${1#!}" = "$1" && op='=' || op=!=
 637     eval test "x\$${1#!}" $op "xyes"
 638 }
 639
 640 disabled(){
 641     test "${1#!}" = "$1" && op='=' || op=!=
 642     eval test "x\$${1#!}" $op "xno"
 643 }
 644
 645 enabled_all(){
 646     for opt; do
 647         enabled $opt || return 1
 648     done
 649 }
 650
 651 disabled_all(){
 652     for opt; do
 653         disabled $opt || return 1
 654     done
 655 }
 656
 657 enabled_any(){
 658     for opt; do
 659         enabled $opt && return 0
 660     done
 661 }
 662
 663 disabled_any(){
 664     for opt; do
 665         disabled $opt && return 0
 666     done
 667     return 1
 668 }
 669
 670 set_default(){
 671     for opt; do
 672         eval : \${$opt:=\$${opt}_default}
 673     done
 674 }
 675
 676 is_in(){
 677     value=$1
 678     shift
 679     for var in $*; do
 680         [ $var = $value ] && return 0
 681     done
 682     return 1
 683 }
 684
 685 do_check_deps(){
 686     for cfg; do
 687         cfg="${cfg#!}"
 688         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 689         disabled ${cfg}_checking && continue
 690         enable ${cfg}_checking
 691         append allopts $cfg
 692
 693         eval dep_all="\$${cfg}_deps"
 694         eval dep_any="\$${cfg}_deps_any"
 695         eval dep_sel="\$${cfg}_select"
 696         eval dep_sgs="\$${cfg}_suggest"
 697         eval dep_ifa="\$${cfg}_if"
 698         eval dep_ifn="\$${cfg}_if_any"
 699
 700         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 701         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 702         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 703
 704         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 705         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 706         enabled_all  $dep_all || disable $cfg
 707         enabled_any  $dep_any || disable $cfg
 708         disabled_any $dep_sel && disable $cfg
 709
 710         if enabled $cfg; then
 711             enable_deep $dep_sel
 712             enable_deep_weak $dep_sgs
 713         fi
 714
 715         disable ${cfg}_checking
 716     done
 717 }
 718
 719 check_deps(){
 720     unset allopts
 721
 722     do_check_deps "$@"
 723
 724     for cfg in $allopts; do
 725         enabled $cfg || continue
 726         eval dep_extralibs="\$${cfg}_extralibs"
 727         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 728     done
 729 }
 730
 731 print_config(){
 732     pfx=$1
 733     files=$2
 734     shift 2
 735     map 'eval echo "$v \${$v:-no}"' "$@" |
 736     awk "BEGIN { split(\"$files\", files) }
 737         {
 738             c = \"$pfx\" toupper(\$1);
 739             v = \$2;
 740             sub(/yes/, 1, v);
 741             sub(/no/,  0, v);
 742             for (f in files) {
 743                 file = files[f];
 744                 if (file ~ /\\.h\$/) {
 745                     printf(\"#define %s %d\\n\", c, v) >>file;
 746                 } else if (file ~ /\\.asm\$/) {
 747                     printf(\"%%define %s %d\\n\", c, v) >>file;
 748                 } else if (file ~ /\\.mak\$/) {
 749                     n = -v ? \"\" : \"!\";
 750                     printf(\"%s%s=yes\\n\", n, c) >>file;
 751                 } else if (file ~ /\\.texi\$/) {
 752                     pre = -v ? \"\" : \"@c \";
 753                     yesno = \$2;
 754                     c2 = tolower(c);
 755                     gsub(/_/, \"-\", c2);
 756                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 757                 }
 758             }
 759         }"
 760 }
 761
 762 print_enabled(){
 763     suf=$1
 764     shift
 765     for v; do
 766         enabled $v && printf "%s\n" ${v%$suf};
 767     done
 768 }
 769
 770 append(){
 771     var=$1
 772     shift
 773     eval "$var=\"\$$var $*\""
 774 }
 775
 776 prepend(){
 777     var=$1
 778     shift
 779     eval "$var=\"$* \$$var\""
 780 }
 781
 782 unique(){
 783     var=$1
 784     uniq_list=""
 785     for tok in $(eval echo \$$var); do
 786         uniq_list="$(filter_out $tok $uniq_list) $tok"
 787     done
 788     eval "$var=\"${uniq_list}\""
 789 }
 790
 791 add_cppflags(){
 792     append CPPFLAGS "$@"
 793 }
 794
 795 add_cflags(){
 796     append CFLAGS $($cflags_filter "$@")
 797 }
 798
 799 add_cxxflags(){
 800     append CXXFLAGS $($cflags_filter "$@")
 801 }
 802
 803 add_asflags(){
 804     append ASFLAGS $($asflags_filter "$@")
 805 }
 806
 807 add_objcflags(){
 808     append OBJCFLAGS $($objcflags_filter "$@")
 809 }
 810
 811 add_ldflags(){
 812     append LDFLAGS $($ldflags_filter "$@")
 813 }
 814
 815 add_ldexeflags(){
 816     append LDEXEFLAGS $($ldflags_filter "$@")
 817 }
 818
 819 add_ldlibflags(){
 820     append LDLIBFLAGS $($ldflags_filter "$@")
 821 }
 822
 823 add_stripflags(){
 824     append ASMSTRIPFLAGS "$@"
 825 }
 826
 827 add_extralibs(){
 828     prepend extralibs $($ldflags_filter "$@")
 829 }
 830
 831 add_host_cppflags(){
 832     append host_cppflags "$@"
 833 }
 834
 835 add_host_cflags(){
 836     append host_cflags $($host_cflags_filter "$@")
 837 }
 838
 839 add_host_ldflags(){
 840     append host_ldflags $($host_ldflags_filter "$@")
 841 }
 842
 843 add_compat(){
 844     append compat_objs $1
 845     shift
 846     map 'add_cppflags -D$v' "$@"
 847 }
 848
 849 check_cmd(){
 850     log "$@"
 851     "$@" >> $logfile 2>&1
 852 }
 853
 854 check_stat(){
 855     log check_stat "$@"
 856     stat "$1" >> $logfile 2>&1
 857 }
 858
 859 cc_o(){
 860     eval printf '%s\\n' $CC_O
 861 }
 862
 863 cc_e(){
 864     eval printf '%s\\n' $CC_E
 865 }
 866
 867 check_cc(){
 868     log check_cc "$@"
 869     cat > $TMPC
 870     log_file $TMPC
 871     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 872 }
 873
 874 check_cxx(){
 875     log check_cxx "$@"
 876     cat > $TMPCPP
 877     log_file $TMPCPP
 878     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 879 }
 880
 881 check_objcc(){
 882     log check_objcc "$@"
 883     cat > $TMPM
 884     log_file $TMPM
 885     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 886 }
 887
 888 check_cpp(){
 889     log check_cpp "$@"
 890     cat > $TMPC
 891     log_file $TMPC
 892     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 893 }
 894
 895 as_o(){
 896     eval printf '%s\\n' $AS_O
 897 }
 898
 899 check_as(){
 900     log check_as "$@"
 901     cat > $TMPS
 902     log_file $TMPS
 903     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 904 }
 905
 906 check_inline_asm(){
 907     log check_inline_asm "$@"
 908     name="$1"
 909     code="$2"
 910     shift 2
 911     disable $name
 912     check_cc "$@" <<EOF && enable $name
 913 void foo(void){ __asm__ volatile($code); }
 914 EOF
 915 }
 916
 917 check_insn(){
 918     log check_insn "$@"
 919     check_inline_asm ${1}_inline "\"$2\""
 920     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 921 }
 922
 923 check_yasm(){
 924     log check_yasm "$@"
 925     echo "$1" > $TMPS
 926     log_file $TMPS
 927     shift 1
 928     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 929 }
 930
 931 ld_o(){
 932     eval printf '%s\\n' $LD_O
 933 }
 934
 935 check_ld(){
 936     log check_ld "$@"
 937     type=$1
 938     shift 1
 939     flags=$(filter_out '-l*|*.so' $@)
 940     libs=$(filter '-l*|*.so' $@)
 941     check_$type $($cflags_filter $flags) || return
 942     flags=$($ldflags_filter $flags)
 943     libs=$($ldflags_filter $libs)
 944     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 945 }
 946
 947 print_include(){
 948     hdr=$1
 949     test "${hdr%.h}" = "${hdr}" &&
 950         echo "#include $hdr"    ||
 951         echo "#include <$hdr>"
 952 }
 953
 954 check_code(){
 955     log check_code "$@"
 956     check=$1
 957     headers=$2
 958     code=$3
 959     shift 3
 960     {
 961         for hdr in $headers; do
 962             print_include $hdr
 963         done
 964         echo "int main(void) { $code; return 0; }"
 965     } | check_$check "$@"
 966 }
 967
 968 check_cppflags(){
 969     log check_cppflags "$@"
 970     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 971 int x;
 972 EOF
 973 }
 974
 975 test_cflags(){
 976     log test_cflags "$@"
 977     set -- $($cflags_filter "$@")
 978     check_cc "$@" <<EOF
 979 int x;
 980 EOF
 981 }
 982
 983 check_cflags(){
 984     log check_cflags "$@"
 985     test_cflags "$@" && add_cflags "$@"
 986 }
 987
 988 check_cxxflags(){
 989     log check_cxxflags "$@"
 990     set -- $($cflags_filter "$@")
 991     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
 992 int x;
 993 EOF
 994 }
 995
 996 test_objcflags(){
 997     log test_cflags "$@"
 998     set -- $($cflags_filter "$@")
 999     check_objcc "$@" <<EOF
1000 int x;
1001 EOF
1002 }
1003
1004 check_objcflags(){
1005     log check_cflags "$@"
1006     test_objcflags "$@" && add_objcflags "$@"
1007 }
1008
1009 test_ldflags(){
1010     log test_ldflags "$@"
1011     check_ld "cc" "$@" <<EOF
1012 int main(void){ return 0; }
1013 EOF
1014 }
1015
1016 check_ldflags(){
1017     log check_ldflags "$@"
1018     test_ldflags "$@" && add_ldflags "$@"
1019 }
1020
1021 test_stripflags(){
1022     log test_stripflags "$@"
1023     # call check_cc to get a fresh TMPO
1024     check_cc <<EOF
1025 int main(void) { return 0; }
1026 EOF
1027     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1028 }
1029
1030 check_stripflags(){
1031     log check_stripflags "$@"
1032     test_stripflags "$@" && add_stripflags "$@"
1033 }
1034
1035 check_header(){
1036     log check_header "$@"
1037     header=$1
1038     shift
1039     disable_safe $header
1040     check_cpp "$@" <<EOF && enable_safe $header
1041 #include <$header>
1042 int x;
1043 EOF
1044 }
1045
1046 check_header_objcc(){
1047     log check_header_objcc "$@"
1048     rm -f -- "$TMPO"
1049     header=$1
1050     shift
1051     disable_safe $header
1052     {
1053        echo "#include <$header>"
1054        echo "int main(void) { return 0; }"
1055     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1056 }
1057
1058 check_func(){
1059     log check_func "$@"
1060     func=$1
1061     shift
1062     disable $func
1063     check_ld "cc" "$@" <<EOF && enable $func
1064 extern int $func();
1065 int main(void){ $func(); }
1066 EOF
1067 }
1068
1069 check_complexfunc(){
1070     log check_complexfunc "$@"
1071     func=$1
1072     narg=$2
1073     shift 2
1074     test $narg = 2 && args="f, g" || args="f * I"
1075     disable $func
1076     check_ld "cc" "$@" <<EOF && enable $func
1077 #include <complex.h>
1078 #include <math.h>
1079 float foo(complex float f, complex float g) { return $func($args); }
1080 int main(void){ return (int) foo; }
1081 EOF
1082 }
1083
1084 check_mathfunc(){
1085     log check_mathfunc "$@"
1086     func=$1
1087     narg=$2
1088     shift 2
1089     test $narg = 2 && args="f, g" || args="f"
1090     disable $func
1091     check_ld "cc" "$@" <<EOF && enable $func
1092 #include <math.h>
1093 float foo(float f, float g) { return $func($args); }
1094 int main(void){ return (int) foo; }
1095 EOF
1096 }
1097
1098 check_func_headers(){
1099     log check_func_headers "$@"
1100     headers=$1
1101     funcs=$2
1102     shift 2
1103     {
1104         for hdr in $headers; do
1105             print_include $hdr
1106         done
1107         for func in $funcs; do
1108             echo "long check_$func(void) { return (long) $func; }"
1109         done
1110         echo "int main(void) { return 0; }"
1111     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1112 }
1113
1114 check_class_headers_cpp(){
1115     log check_class_headers_cpp "$@"
1116     headers=$1
1117     classes=$2
1118     shift 2
1119     {
1120         for hdr in $headers; do
1121             echo "#include <$hdr>"
1122         done
1123         echo "int main(void) { "
1124         i=1
1125         for class in $classes; do
1126             echo "$class obj$i;"
1127             i=$(expr $i + 1)
1128         done
1129         echo "return 0; }"
1130     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1131 }
1132
1133 check_cpp_condition(){
1134     log check_cpp_condition "$@"
1135     header=$1
1136     condition=$2
1137     shift 2
1138     check_cpp "$@" <<EOF
1139 #include <$header>
1140 #if !($condition)
1141 #error "unsatisfied condition: $condition"
1142 #endif
1143 EOF
1144 }
1145
1146 check_lib(){
1147     log check_lib "$@"
1148     header="$1"
1149     func="$2"
1150     shift 2
1151     check_header $header && check_func $func "$@" && add_extralibs "$@"
1152 }
1153
1154 check_lib2(){
1155     log check_lib2 "$@"
1156     headers="$1"
1157     funcs="$2"
1158     shift 2
1159     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1160 }
1161
1162 check_lib_cpp(){
1163     log check_lib_cpp "$@"
1164     headers="$1"
1165     classes="$2"
1166     shift 2
1167     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1168 }
1169
1170 check_pkg_config(){
1171     log check_pkg_config "$@"
1172     pkgandversion="$1"
1173     pkg="${1%% *}"
1174     headers="$2"
1175     funcs="$3"
1176     shift 3
1177     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1178     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1179     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1180     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1181         set_safe "${pkg}_cflags" $pkg_cflags   &&
1182         set_safe "${pkg}_libs"   $pkg_libs
1183 }
1184
1185 check_exec(){
1186     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1187 }
1188
1189 check_exec_crash(){
1190     code=$(cat)
1191
1192     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1193     # are safe but may not be available everywhere.  Thus we use
1194     # raise(SIGTERM) instead.  The check is run in a subshell so we
1195     # can redirect the "Terminated" message from the shell.  SIGBUS
1196     # is not defined by standard C so it is used conditionally.
1197
1198     (check_exec "$@") >> $logfile 2>&1 <<EOF
1199 #include <signal.h>
1200 static void sighandler(int sig){
1201     raise(SIGTERM);
1202 }
1203 int foo(void){
1204     $code
1205 }
1206 int (*func_ptr)(void) = foo;
1207 int main(void){
1208     signal(SIGILL, sighandler);
1209     signal(SIGFPE, sighandler);
1210     signal(SIGSEGV, sighandler);
1211 #ifdef SIGBUS
1212     signal(SIGBUS, sighandler);
1213 #endif
1214     return func_ptr();
1215 }
1216 EOF
1217 }
1218
1219 check_type(){
1220     log check_type "$@"
1221     headers=$1
1222     type=$2
1223     shift 2
1224     disable_safe "$type"
1225     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1226 }
1227
1228 check_struct(){
1229     log check_struct "$@"
1230     headers=$1
1231     struct=$2
1232     member=$3
1233     shift 3
1234     disable_safe "${struct}_${member}"
1235     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1236         enable_safe "${struct}_${member}"
1237 }
1238
1239 check_builtin(){
1240     log check_builtin "$@"
1241     name=$1
1242     headers=$2
1243     builtin=$3
1244     shift 3
1245     disable "$name"
1246     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1247 }
1248
1249 check_compile_assert(){
1250     log check_compile_assert "$@"
1251     name=$1
1252     headers=$2
1253     condition=$3
1254     shift 3
1255     disable "$name"
1256     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1257 }
1258
1259 require(){
1260     name="$1"
1261     header="$2"
1262     func="$3"
1263     shift 3
1264     check_lib $header $func "$@" || die "ERROR: $name not found"
1265 }
1266
1267 require2(){
1268     name="$1"
1269     headers="$2"
1270     func="$3"
1271     shift 3
1272     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1273 }
1274
1275 require_cpp(){
1276     name="$1"
1277     headers="$2"
1278     classes="$3"
1279     shift 3
1280     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1281 }
1282
1283 use_pkg_config(){
1284     pkg="$1"
1285     check_pkg_config "$@" || return 1
1286     add_cflags    $(get_safe "${pkg}_cflags")
1287     add_extralibs $(get_safe "${pkg}_libs")
1288 }
1289
1290 require_pkg_config(){
1291     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1292 }
1293
1294 require_libfreetype(){
1295     log require_libfreetype "$@"
1296     pkg="freetype2"
1297     check_cmd $pkg_config --exists --print-errors $pkg \
1298       || die "ERROR: $pkg not found"
1299     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1300     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1301     {
1302         echo "#include <ft2build.h>"
1303         echo "#include FT_FREETYPE_H"
1304         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1305         echo "int main(void) { return 0; }"
1306     } | check_ld "cc" $pkg_cflags $pkg_libs \
1307       && set_safe "${pkg}_cflags" $pkg_cflags \
1308       && set_safe "${pkg}_libs"   $pkg_libs \
1309       || die "ERROR: $pkg not found"
1310     add_cflags    $(get_safe "${pkg}_cflags")
1311     add_extralibs $(get_safe "${pkg}_libs")
1312 }
1313
1314 hostcc_e(){
1315     eval printf '%s\\n' $HOSTCC_E
1316 }
1317
1318 hostcc_o(){
1319     eval printf '%s\\n' $HOSTCC_O
1320 }
1321
1322 check_host_cc(){
1323     log check_host_cc "$@"
1324     cat > $TMPC
1325     log_file $TMPC
1326     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1327 }
1328
1329 check_host_cpp(){
1330     log check_host_cpp "$@"
1331     cat > $TMPC
1332     log_file $TMPC
1333     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1334 }
1335
1336 check_host_cppflags(){
1337     log check_host_cppflags "$@"
1338     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1339 int x;
1340 EOF
1341 }
1342
1343 check_host_cflags(){
1344     log check_host_cflags "$@"
1345     set -- $($host_cflags_filter "$@")
1346     check_host_cc "$@" <<EOF && append host_cflags "$@"
1347 int x;
1348 EOF
1349 }
1350
1351 check_host_cpp_condition(){
1352     log check_host_cpp_condition "$@"
1353     header=$1
1354     condition=$2
1355     shift 2
1356     check_host_cpp "$@" <<EOF
1357 #include <$header>
1358 #if !($condition)
1359 #error "unsatisfied condition: $condition"
1360 #endif
1361 EOF
1362 }
1363
1364 cp_if_changed(){
1365     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1366     mkdir -p "$(dirname $2)"
1367     $cp_f "$1" "$2"
1368 }
1369
1370 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1371 # system-dependent things.
1372
1373 AVCODEC_COMPONENTS="
1374     bsfs
1375     decoders
1376     encoders
1377     hwaccels
1378     parsers
1379 "
1380
1381 AVDEVICE_COMPONENTS="
1382     indevs
1383     outdevs
1384 "
1385 AVFILTER_COMPONENTS="
1386     filters
1387 "
1388 AVFORMAT_COMPONENTS="
1389     demuxers
1390     muxers
1391     protocols
1392 "
1393
1394 AVRESAMPLE_COMPONENTS=""
1395 AVUTIL_COMPONENTS=""
1396
1397 COMPONENT_LIST="
1398     $AVCODEC_COMPONENTS
1399     $AVDEVICE_COMPONENTS
1400     $AVFILTER_COMPONENTS
1401     $AVFORMAT_COMPONENTS
1402     $AVRESAMPLE_COMPONENTS
1403     $AVUTIL_COMPONENTS
1404 "
1405
1406 EXAMPLE_LIST="
1407     avio_reading_example
1408     avio_dir_cmd_example
1409     decoding_encoding_example
1410     demuxing_decoding_example
1411     extract_mvs_example
1412     filter_audio_example
1413     filtering_audio_example
1414     filtering_video_example
1415     metadata_example
1416     muxing_example
1417     qsvdec_example
1418     remuxing_example
1419     resampling_audio_example
1420     scaling_video_example
1421     transcode_aac_example
1422     transcoding_example
1423 "
1424
1425 EXTERNAL_LIBRARY_LIST="
1426     avisynth
1427     bzlib
1428     chromaprint
1429     crystalhd
1430     cuda
1431     decklink
1432     frei0r
1433     gcrypt
1434     gmp
1435     gnutls
1436     iconv
1437     ladspa
1438     libass
1439     libbluray
1440     libbs2b
1441     libcaca
1442     libcdio
1443     libcelt
1444     libdc1394
1445     libdcadec
1446     libfaac
1447     libfdk_aac
1448     libflite
1449     libfontconfig
1450     libfreetype
1451     libfribidi
1452     libgme
1453     libgsm
1454     libiec61883
1455     libilbc
1456     libkvazaar
1457     libmfx
1458     libmodplug
1459     libmp3lame
1460     libnut
1461     libopencore_amrnb
1462     libopencore_amrwb
1463     libopencv
1464     libopenh264
1465     libopenjpeg
1466     libopus
1467     libpulse
1468     librtmp
1469     librubberband
1470     libschroedinger
1471     libshine
1472     libsmbclient
1473     libsnappy
1474     libsoxr
1475     libspeex
1476     libssh
1477     libtesseract
1478     libtheora
1479     libtwolame
1480     libutvideo
1481     libv4l2
1482     libvidstab
1483     libvo_amrwbenc
1484     libvorbis
1485     libvpx
1486     libwavpack
1487     libwebp
1488     libx264
1489     libx265
1490     libxavs
1491     libxcb
1492     libxcb_shm
1493     libxcb_shape
1494     libxcb_xfixes
1495     libxvid
1496     libzimg
1497     libzmq
1498     libzvbi
1499     lzma
1500     mmal
1501     netcdf
1502     nvenc
1503     openal
1504     opencl
1505     opengl
1506     openssl
1507     schannel
1508     sdl
1509     securetransport
1510     x11grab
1511     xlib
1512     zlib
1513 "
1514
1515 DOCUMENT_LIST="
1516     doc
1517     htmlpages
1518     manpages
1519     podpages
1520     txtpages
1521 "
1522
1523 FEATURE_LIST="
1524     ftrapv
1525     gray
1526     hardcoded_tables
1527     runtime_cpudetect
1528     safe_bitstream_reader
1529     shared
1530     small
1531     static
1532     swscale_alpha
1533 "
1534
1535 HWACCEL_LIST="
1536     d3d11va
1537     dxva2
1538     vaapi
1539     vda
1540     vdpau
1541     videotoolbox
1542     xvmc
1543 "
1544
1545 LIBRARY_LIST="
1546     avcodec
1547     avdevice
1548     avfilter
1549     avformat
1550     avresample
1551     avutil
1552     postproc
1553     swresample
1554     swscale
1555 "
1556
1557 LICENSE_LIST="
1558     gpl
1559     nonfree
1560     version3
1561 "
1562
1563 PROGRAM_LIST="
1564     ffplay
1565     ffprobe
1566     ffserver
1567     ffmpeg
1568 "
1569
1570 SUBSYSTEM_LIST="
1571     dct
1572     dwt
1573     error_resilience
1574     faan
1575     fast_unaligned
1576     fft
1577     lsp
1578     lzo
1579     mdct
1580     pixelutils
1581     network
1582     rdft
1583 "
1584
1585 CONFIG_LIST="
1586     $COMPONENT_LIST
1587     $DOCUMENT_LIST
1588     $EXAMPLE_LIST
1589     $EXTERNAL_LIBRARY_LIST
1590     $FEATURE_LIST
1591     $HWACCEL_LIST
1592     $LICENSE_LIST
1593     $LIBRARY_LIST
1594     $PROGRAM_LIST
1595     $SUBSYSTEM_LIST
1596     fontconfig
1597     incompatible_libav_abi
1598     memalign_hack
1599     memory_poisoning
1600     neon_clobber_test
1601     pic
1602     pod2man
1603     raise_major
1604     thumb
1605     valgrind_backtrace
1606     xmm_clobber_test
1607 "
1608
1609 THREADS_LIST="
1610     pthreads
1611     os2threads
1612     w32threads
1613 "
1614
1615 ATOMICS_LIST="
1616     atomics_gcc
1617     atomics_suncc
1618     atomics_win32
1619 "
1620
1621 ARCH_LIST="
1622     aarch64
1623     alpha
1624     arm
1625     avr32
1626     avr32_ap
1627     avr32_uc
1628     bfin
1629     ia64
1630     m68k
1631     mips
1632     mips64
1633     parisc
1634     ppc
1635     ppc64
1636     s390
1637     sh4
1638     sparc
1639     sparc64
1640     tilegx
1641     tilepro
1642     tomi
1643     x86
1644     x86_32
1645     x86_64
1646 "
1647
1648 ARCH_EXT_LIST_ARM="
1649     armv5te
1650     armv6
1651     armv6t2
1652     armv8
1653     neon
1654     vfp
1655     vfpv3
1656     setend
1657 "
1658
1659 ARCH_EXT_LIST_MIPS="
1660     mipsfpu
1661     mips32r2
1662     mips64r2
1663     mips32r6
1664     mips64r6
1665     mipsdsp
1666     mipsdspr2
1667     msa
1668 "
1669
1670 ARCH_EXT_LIST_LOONGSON="
1671     loongson2
1672     loongson3
1673     mmi
1674 "
1675
1676 ARCH_EXT_LIST_X86_SIMD="
1677     aesni
1678     amd3dnow
1679     amd3dnowext
1680     avx
1681     avx2
1682     fma3
1683     fma4
1684     mmx
1685     mmxext
1686     sse
1687     sse2
1688     sse3
1689     sse4
1690     sse42
1691     ssse3
1692     xop
1693 "
1694
1695 ARCH_EXT_LIST_PPC="
1696     altivec
1697     dcbzl
1698     ldbrx
1699     power8
1700     ppc4xx
1701     vsx
1702 "
1703
1704 ARCH_EXT_LIST_X86="
1705     $ARCH_EXT_LIST_X86_SIMD
1706     cpunop
1707     i686
1708 "
1709
1710 ARCH_EXT_LIST="
1711     $ARCH_EXT_LIST_ARM
1712     $ARCH_EXT_LIST_PPC
1713     $ARCH_EXT_LIST_X86
1714     $ARCH_EXT_LIST_MIPS
1715     $ARCH_EXT_LIST_LOONGSON
1716 "
1717
1718 ARCH_FEATURES="
1719     aligned_stack
1720     fast_64bit
1721     fast_clz
1722     fast_cmov
1723     local_aligned_8
1724     local_aligned_16
1725     local_aligned_32
1726     simd_align_16
1727 "
1728
1729 BUILTIN_LIST="
1730     atomic_cas_ptr
1731     atomic_compare_exchange
1732     machine_rw_barrier
1733     MemoryBarrier
1734     mm_empty
1735     rdtsc
1736     sarestart
1737     sem_timedwait
1738     sync_val_compare_and_swap
1739 "
1740 HAVE_LIST_CMDLINE="
1741     inline_asm
1742     symver
1743     yasm
1744 "
1745
1746 HAVE_LIST_PUB="
1747     bigendian
1748     fast_unaligned
1749     incompatible_libav_abi
1750 "
1751
1752 HEADERS_LIST="
1753     alsa_asoundlib_h
1754     altivec_h
1755     arpa_inet_h
1756     asm_types_h
1757     cdio_paranoia_h
1758     cdio_paranoia_paranoia_h
1759     dispatch_dispatch_h
1760     dev_bktr_ioctl_bt848_h
1761     dev_bktr_ioctl_meteor_h
1762     dev_ic_bt8xx_h
1763     dev_video_bktr_ioctl_bt848_h
1764     dev_video_meteor_ioctl_meteor_h
1765     direct_h
1766     dirent_h
1767     dlfcn_h
1768     d3d11_h
1769     dxva_h
1770     ES2_gl_h
1771     gsm_h
1772     io_h
1773     mach_mach_time_h
1774     machine_ioctl_bt848_h
1775     machine_ioctl_meteor_h
1776     malloc_h
1777     opencv2_core_core_c_h
1778     openjpeg_2_1_openjpeg_h
1779     openjpeg_2_0_openjpeg_h
1780     openjpeg_1_5_openjpeg_h
1781     OpenGL_gl3_h
1782     poll_h
1783     sndio_h
1784     soundcard_h
1785     sys_mman_h
1786     sys_param_h
1787     sys_resource_h
1788     sys_select_h
1789     sys_soundcard_h
1790     sys_time_h
1791     sys_un_h
1792     sys_videoio_h
1793     termios_h
1794     udplite_h
1795     unistd_h
1796     valgrind_valgrind_h
1797     windows_h
1798     winsock2_h
1799 "
1800
1801 INTRINSICS_LIST="
1802     intrinsics_neon
1803 "
1804
1805 COMPLEX_FUNCS="
1806     cabs
1807     cexp
1808 "
1809
1810 MATH_FUNCS="
1811     atanf
1812     atan2f
1813     cbrt
1814     cbrtf
1815     copysign
1816     cosf
1817     erf
1818     exp2
1819     exp2f
1820     expf
1821     hypot
1822     isfinite
1823     isinf
1824     isnan
1825     ldexpf
1826     llrint
1827     llrintf
1828     log2
1829     log2f
1830     log10f
1831     lrint
1832     lrintf
1833     powf
1834     rint
1835     round
1836     roundf
1837     sinf
1838     trunc
1839     truncf
1840 "
1841
1842 SYSTEM_FUNCS="
1843     access
1844     aligned_malloc
1845     arc4random
1846     clock_gettime
1847     closesocket
1848     CommandLineToArgvW
1849     CoTaskMemFree
1850     CryptGenRandom
1851     dlopen
1852     fcntl
1853     flt_lim
1854     fork
1855     getaddrinfo
1856     gethrtime
1857     getopt
1858     GetProcessAffinityMask
1859     GetProcessMemoryInfo
1860     GetProcessTimes
1861     getrusage
1862     GetSystemTimeAsFileTime
1863     gettimeofday
1864     glob
1865     glXGetProcAddress
1866     gmtime_r
1867     inet_aton
1868     isatty
1869     jack_port_get_latency_range
1870     kbhit
1871     localtime_r
1872     lstat
1873     lzo1x_999_compress
1874     mach_absolute_time
1875     MapViewOfFile
1876     memalign
1877     mkstemp
1878     mmap
1879     mprotect
1880     nanosleep
1881     PeekNamedPipe
1882     posix_memalign
1883     pthread_cancel
1884     sched_getaffinity
1885     SetConsoleTextAttribute
1886     SetConsoleCtrlHandler
1887     setmode
1888     setrlimit
1889     Sleep
1890     strerror_r
1891     sysconf
1892     sysctl
1893     usleep
1894     UTGetOSTypeFromString
1895     VirtualAlloc
1896     wglGetProcAddress
1897 "
1898
1899 TOOLCHAIN_FEATURES="
1900     as_dn_directive
1901     as_func
1902     as_object_arch
1903     asm_mod_q
1904     attribute_may_alias
1905     attribute_packed
1906     ebp_available
1907     ebx_available
1908     gnu_as
1909     gnu_windres
1910     ibm_asm
1911     inline_asm_direct_symbol_refs
1912     inline_asm_labels
1913     inline_asm_nonlocal_labels
1914     pragma_deprecated
1915     rsync_contimeout
1916     symver_asm_label
1917     symver_gnu_asm
1918     vfp_args
1919     xform_asm
1920     xmm_clobbers
1921 "
1922
1923 TYPES_LIST="
1924     CONDITION_VARIABLE_Ptr
1925     socklen_t
1926     struct_addrinfo
1927     struct_group_source_req
1928     struct_ip_mreq_source
1929     struct_ipv6_mreq
1930     struct_pollfd
1931     struct_rusage_ru_maxrss
1932     struct_sctp_event_subscribe
1933     struct_sockaddr_in6
1934     struct_sockaddr_sa_len
1935     struct_sockaddr_storage
1936     struct_stat_st_mtim_tv_nsec
1937     struct_v4l2_frmivalenum_discrete
1938 "
1939
1940 HAVE_LIST="
1941     $ARCH_EXT_LIST
1942     $(add_suffix _external $ARCH_EXT_LIST)
1943     $(add_suffix _inline   $ARCH_EXT_LIST)
1944     $ARCH_FEATURES
1945     $ATOMICS_LIST
1946     $BUILTIN_LIST
1947     $COMPLEX_FUNCS
1948     $HAVE_LIST_CMDLINE
1949     $HAVE_LIST_PUB
1950     $HEADERS_LIST
1951     $INTRINSICS_LIST
1952     $MATH_FUNCS
1953     $SYSTEM_FUNCS
1954     $THREADS_LIST
1955     $TOOLCHAIN_FEATURES
1956     $TYPES_LIST
1957     atomics_native
1958     dos_paths
1959     dxva2_lib
1960     dxva2api_cobj
1961     libc_msvcrt
1962     libdc1394_1
1963     libdc1394_2
1964     makeinfo
1965     makeinfo_html
1966     perl
1967     pod2man
1968     sdl
1969     section_data_rel_ro
1970     texi2html
1971     threads
1972     vaapi_x11
1973     vdpau_x11
1974     winrt
1975     xlib
1976 "
1977
1978 # options emitted with CONFIG_ prefix but not available on the command line
1979 CONFIG_EXTRA="
1980     aandcttables
1981     ac3dsp
1982     audio_frame_queue
1983     audiodsp
1984     blockdsp
1985     bswapdsp
1986     cabac
1987     dirac_parse
1988     dvprofile
1989     exif
1990     faandct
1991     faanidct
1992     fdctdsp
1993     flacdsp
1994     fmtconvert
1995     frame_thread_encoder
1996     g722dsp
1997     golomb
1998     gplv3
1999     h263dsp
2000     h264chroma
2001     h264dsp
2002     h264pred
2003     h264qpel
2004     hpeldsp
2005     huffman
2006     huffyuvdsp
2007     huffyuvencdsp
2008     idctdsp
2009     iirfilter
2010     imdct15
2011     intrax8
2012     ividsp
2013     jpegtables
2014     lgplv3
2015     libx262
2016     llauddsp
2017     llviddsp
2018     lpc
2019     lzf
2020     me_cmp
2021     mpeg_er
2022     mpegaudio
2023     mpegaudiodsp
2024     mpegvideo
2025     mpegvideoenc
2026     mss34dsp
2027     pixblockdsp
2028     qpeldsp
2029     qsv
2030     qsvdec
2031     qsvenc
2032     rangecoder
2033     riffdec
2034     riffenc
2035     rtpdec
2036     rtpenc_chain
2037     rv34dsp
2038     sinewin
2039     snappy
2040     startcode
2041     texturedsp
2042     texturedspenc
2043     tpeldsp
2044     videodsp
2045     vp3dsp
2046     vp56dsp
2047     vp8dsp
2048     wma_freqs
2049     wmv2dsp
2050 "
2051
2052 CMDLINE_SELECT="
2053     $ARCH_EXT_LIST
2054     $CONFIG_LIST
2055     $HAVE_LIST_CMDLINE
2056     $THREADS_LIST
2057     asm
2058     cross_compile
2059     debug
2060     extra_warnings
2061     logging
2062     lto
2063     optimizations
2064     rpath
2065     stripping
2066 "
2067
2068 PATHS_LIST="
2069     bindir
2070     datadir
2071     docdir
2072     incdir
2073     libdir
2074     mandir
2075     pkgconfigdir
2076     prefix
2077     shlibdir
2078 "
2079
2080 CMDLINE_SET="
2081     $PATHS_LIST
2082     ar
2083     arch
2084     as
2085     assert_level
2086     build_suffix
2087     cc
2088     objcc
2089     cpu
2090     cross_prefix
2091     custom_allocator
2092     cxx
2093     dep_cc
2094     doxygen
2095     env
2096     extra_version
2097     gas
2098     host_cc
2099     host_cflags
2100     host_ld
2101     host_ldflags
2102     host_libs
2103     host_os
2104     install
2105     ld
2106     logfile
2107     malloc_prefix
2108     nm
2109     optflags
2110     pkg_config
2111     pkg_config_flags
2112     progs_suffix
2113     random_seed
2114     ranlib
2115     samples
2116     strip
2117     sws_max_filter_size
2118     sysinclude
2119     sysroot
2120     target_exec
2121     target_os
2122     target_path
2123     target_samples
2124     tempprefix
2125     toolchain
2126     valgrind
2127     yasmexe
2128 "
2129
2130 CMDLINE_APPEND="
2131     extra_cflags
2132     extra_cxxflags
2133     extra_objcflags
2134     host_cppflags
2135 "
2136
2137 # code dependency declarations
2138
2139 # architecture extensions
2140
2141 armv5te_deps="arm"
2142 armv6_deps="arm"
2143 armv6t2_deps="arm"
2144 armv8_deps="aarch64"
2145 neon_deps_any="aarch64 arm"
2146 intrinsics_neon_deps="neon"
2147 vfp_deps_any="aarch64 arm"
2148 vfpv3_deps="vfp"
2149 setend_deps="arm"
2150
2151 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2152
2153 mipsfpu_deps="mips"
2154 mipsdsp_deps="mips"
2155 mipsdspr2_deps="mips"
2156 mips32r2_deps="mips"
2157 mips32r6_deps="mips"
2158 mips64r2_deps="mips"
2159 mips64r6_deps="mips"
2160 msa_deps="mips"
2161 mmi_deps="mips"
2162
2163 altivec_deps="ppc"
2164 dcbzl_deps="ppc"
2165 ldbrx_deps="ppc"
2166 ppc4xx_deps="ppc"
2167 vsx_deps="altivec"
2168 power8_deps="vsx"
2169
2170 cpunop_deps="i686"
2171 x86_64_select="i686"
2172 x86_64_suggest="fast_cmov"
2173
2174 amd3dnow_deps="mmx"
2175 amd3dnowext_deps="amd3dnow"
2176 i686_deps="x86"
2177 mmx_deps="x86"
2178 mmxext_deps="mmx"
2179 sse_deps="mmxext"
2180 sse2_deps="sse"
2181 sse3_deps="sse2"
2182 ssse3_deps="sse3"
2183 sse4_deps="ssse3"
2184 sse42_deps="sse4"
2185 aesni_deps="sse42"
2186 avx_deps="sse42"
2187 xop_deps="avx"
2188 fma3_deps="avx"
2189 fma4_deps="avx"
2190 avx2_deps="avx"
2191
2192 mmx_external_deps="yasm"
2193 mmx_inline_deps="inline_asm"
2194 mmx_suggest="mmx_external mmx_inline"
2195
2196 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2197     eval dep=\$${ext}_deps
2198     eval ${ext}_external_deps='"${dep}_external"'
2199     eval ${ext}_inline_deps='"${dep}_inline"'
2200     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2201 done
2202
2203 aligned_stack_if_any="aarch64 ppc x86"
2204 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2205 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2206 fast_unaligned_if_any="aarch64 ppc x86"
2207 simd_align_16_if_any="altivec neon sse"
2208
2209 # system capabilities
2210 symver_if_any="symver_asm_label symver_gnu_asm"
2211 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2212
2213 # threading support
2214 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2215 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2216 atomics_win32_if="MemoryBarrier"
2217 atomics_native_if_any="$ATOMICS_LIST"
2218 w32threads_deps="atomics_native"
2219 threads_if_any="$THREADS_LIST"
2220
2221 # subsystems
2222 dct_select="rdft"
2223 dirac_parse_select="golomb"
2224 error_resilience_select="me_cmp"
2225 faandct_deps="faan fdctdsp"
2226 faanidct_deps="faan idctdsp"
2227 frame_thread_encoder_deps="encoders threads"
2228 intrax8_select="error_resilience"
2229 mdct_select="fft"
2230 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2231 mpeg_er_select="error_resilience"
2232 mpegaudio_select="mpegaudiodsp"
2233 mpegaudiodsp_select="dct"
2234 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2235 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2236 qsvdec_select="qsv"
2237 qsvenc_select="qsv"
2238 rdft_select="fft"
2239
2240 # decoders / encoders
2241 aac_decoder_select="imdct15 mdct sinewin"
2242 aac_fixed_decoder_select="mdct sinewin"
2243 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2244 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2245 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2246 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2247 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2248 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2249 adpcm_g722_decoder_select="g722dsp"
2250 adpcm_g722_encoder_select="g722dsp"
2251 aic_decoder_select="golomb idctdsp"
2252 alac_encoder_select="lpc"
2253 als_decoder_select="bswapdsp"
2254 amrnb_decoder_select="lsp"
2255 amrwb_decoder_select="lsp"
2256 amv_decoder_select="sp5x_decoder exif"
2257 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2258 ape_decoder_select="bswapdsp llauddsp"
2259 apng_decoder_select="zlib"
2260 apng_encoder_select="huffyuvencdsp zlib"
2261 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2262 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2263 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2264 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2265 atrac1_decoder_select="mdct sinewin"
2266 atrac3_decoder_select="mdct"
2267 atrac3p_decoder_select="mdct sinewin"
2268 avrn_decoder_select="exif jpegtables"
2269 bink_decoder_select="blockdsp hpeldsp"
2270 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2271 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2272 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2273 cllc_decoder_select="bswapdsp"
2274 comfortnoise_encoder_select="lpc"
2275 cook_decoder_select="audiodsp mdct sinewin"
2276 cscd_decoder_select="lzo"
2277 cscd_decoder_suggest="zlib"
2278 dca_decoder_select="mdct"
2279 dds_decoder_select="texturedsp"
2280 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2281 dnxhd_decoder_select="blockdsp idctdsp"
2282 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2283 dvvideo_decoder_select="dvprofile idctdsp"
2284 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2285 dxa_decoder_select="zlib"
2286 dxv_decoder_select="lzf texturedsp"
2287 eac3_decoder_select="ac3_decoder"
2288 eac3_encoder_select="ac3_encoder"
2289 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2290 eatgq_decoder_select="aandcttables"
2291 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2292 exr_decoder_select="zlib"
2293 ffv1_decoder_select="golomb rangecoder"
2294 ffv1_encoder_select="rangecoder"
2295 ffvhuff_decoder_select="huffyuv_decoder"
2296 ffvhuff_encoder_select="huffyuv_encoder"
2297 fic_decoder_select="golomb"
2298 flac_decoder_select="flacdsp golomb"
2299 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2300 flashsv2_decoder_select="zlib"
2301 flashsv2_encoder_select="zlib"
2302 flashsv_decoder_select="zlib"
2303 flashsv_encoder_select="zlib"
2304 flv_decoder_select="h263_decoder"
2305 flv_encoder_select="h263_encoder"
2306 fourxm_decoder_select="blockdsp bswapdsp"
2307 fraps_decoder_select="bswapdsp huffman"
2308 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2309 g729_decoder_select="audiodsp"
2310 h261_decoder_select="mpegvideo"
2311 h261_encoder_select="aandcttables mpegvideoenc"
2312 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2313 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2314 h263i_decoder_select="h263_decoder"
2315 h263p_decoder_select="h263_decoder"
2316 h263p_encoder_select="h263_encoder"
2317 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2318 h264_decoder_suggest="error_resilience"
2319 h264_qsv_decoder_deps="libmfx"
2320 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2321 h264_qsv_encoder_deps="libmfx"
2322 h264_qsv_encoder_select="qsvenc"
2323 hap_decoder_select="snappy texturedsp"
2324 hap_encoder_deps="libsnappy"
2325 hap_encoder_select="texturedspenc"
2326 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2327 hevc_qsv_decoder_deps="libmfx"
2328 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2329 hevc_qsv_encoder_deps="libmfx"
2330 hevc_qsv_encoder_select="qsvenc"
2331 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2332 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2333 iac_decoder_select="imc_decoder"
2334 imc_decoder_select="bswapdsp fft mdct sinewin"
2335 indeo3_decoder_select="hpeldsp"
2336 indeo4_decoder_select="ividsp"
2337 indeo5_decoder_select="ividsp"
2338 interplay_video_decoder_select="hpeldsp"
2339 jpegls_decoder_select="golomb mjpeg_decoder"
2340 jpegls_encoder_select="golomb"
2341 jv_decoder_select="blockdsp"
2342 lagarith_decoder_select="huffyuvdsp"
2343 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2344 loco_decoder_select="golomb"
2345 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2346 metasound_decoder_select="lsp mdct sinewin"
2347 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2348 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2349 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2350 mjpegb_decoder_select="mjpeg_decoder"
2351 mlp_decoder_select="mlp_parser"
2352 motionpixels_decoder_select="bswapdsp"
2353 mp1_decoder_select="mpegaudio"
2354 mp1float_decoder_select="mpegaudio"
2355 mp2_decoder_select="mpegaudio"
2356 mp2float_decoder_select="mpegaudio"
2357 mp3_decoder_select="mpegaudio"
2358 mp3adu_decoder_select="mpegaudio"
2359 mp3adufloat_decoder_select="mpegaudio"
2360 mp3float_decoder_select="mpegaudio"
2361 mp3on4_decoder_select="mpegaudio"
2362 mp3on4float_decoder_select="mpegaudio"
2363 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2364 mpc8_decoder_select="mpegaudiodsp"
2365 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2366 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2367 mpegvideo_decoder_select="mpegvideo"
2368 mpeg1video_decoder_select="mpegvideo"
2369 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2370 mpeg2video_decoder_select="mpegvideo"
2371 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2372 mpeg2_qsv_decoder_deps="libmfx"
2373 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2374 mpeg2_qsv_encoder_deps="libmfx"
2375 mpeg2_qsv_encoder_select="qsvenc"
2376 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2377 mpeg4_encoder_select="h263_encoder"
2378 msa1_decoder_select="mss34dsp"
2379 msmpeg4v1_decoder_select="h263_decoder"
2380 msmpeg4v2_decoder_select="h263_decoder"
2381 msmpeg4v2_encoder_select="h263_encoder"
2382 msmpeg4v3_decoder_select="h263_decoder"
2383 msmpeg4v3_encoder_select="h263_encoder"
2384 mss2_decoder_select="vc1_decoder"
2385 mts2_decoder_select="mss34dsp"
2386 mxpeg_decoder_select="mjpeg_decoder"
2387 nellymoser_decoder_select="mdct sinewin"
2388 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2389 nuv_decoder_select="idctdsp lzo"
2390 on2avc_decoder_select="mdct"
2391 opus_decoder_deps="swresample"
2392 opus_decoder_select="imdct15"
2393 png_decoder_select="zlib"
2394 png_encoder_select="huffyuvencdsp zlib"
2395 prores_decoder_select="blockdsp idctdsp"
2396 prores_encoder_select="fdctdsp"
2397 qcelp_decoder_select="lsp"
2398 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2399 ra_144_decoder_select="audiodsp"
2400 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2401 ralf_decoder_select="golomb"
2402 rawvideo_decoder_select="bswapdsp"
2403 rscc_decoder_select="zlib"
2404 rtjpeg_decoder_select="me_cmp"
2405 rv10_decoder_select="h263_decoder"
2406 rv10_encoder_select="h263_encoder"
2407 rv20_decoder_select="h263_decoder"
2408 rv20_encoder_select="h263_encoder"
2409 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2410 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2411 screenpresso_decoder_select="zlib"
2412 shorten_decoder_select="golomb"
2413 sipr_decoder_select="lsp"
2414 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2415 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2416 sonic_decoder_select="golomb rangecoder"
2417 sonic_encoder_select="golomb rangecoder"
2418 sonic_ls_encoder_select="golomb rangecoder"
2419 sp5x_decoder_select="mjpeg_decoder"
2420 svq1_decoder_select="hpeldsp"
2421 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2422 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2423 svq3_decoder_suggest="zlib"
2424 tak_decoder_select="audiodsp"
2425 tdsc_decoder_select="zlib mjpeg_decoder"
2426 theora_decoder_select="vp3_decoder"
2427 thp_decoder_select="mjpeg_decoder"
2428 tiff_decoder_suggest="zlib lzma"
2429 tiff_encoder_suggest="zlib"
2430 truehd_decoder_select="mlp_parser"
2431 truemotion2_decoder_select="bswapdsp"
2432 truespeech_decoder_select="bswapdsp"
2433 tscc_decoder_select="zlib"
2434 twinvq_decoder_select="mdct lsp sinewin"
2435 txd_decoder_select="texturedsp"
2436 utvideo_decoder_select="bswapdsp"
2437 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2438 vble_decoder_select="huffyuvdsp"
2439 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 qpeldsp startcode"
2440 vc1_qsv_decoder_deps="libmfx"
2441 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2442 vc1image_decoder_select="vc1_decoder"
2443 vorbis_decoder_select="mdct"
2444 vorbis_encoder_select="mdct"
2445 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2446 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2447 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2448 vp6a_decoder_select="vp6_decoder"
2449 vp6f_decoder_select="vp6_decoder"
2450 vp7_decoder_select="h264pred videodsp vp8dsp"
2451 vp8_decoder_select="h264pred videodsp vp8dsp"
2452 vp9_decoder_select="videodsp vp9_parser"
2453 webp_decoder_select="vp8_decoder exif"
2454 wmalossless_decoder_select="llauddsp"
2455 wmapro_decoder_select="mdct sinewin wma_freqs"
2456 wmav1_decoder_select="mdct sinewin wma_freqs"
2457 wmav1_encoder_select="mdct sinewin wma_freqs"
2458 wmav2_decoder_select="mdct sinewin wma_freqs"
2459 wmav2_encoder_select="mdct sinewin wma_freqs"
2460 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2461 wmv1_decoder_select="h263_decoder"
2462 wmv1_encoder_select="h263_encoder"
2463 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2464 wmv2_encoder_select="h263_encoder wmv2dsp"
2465 wmv3_decoder_select="vc1_decoder"
2466 wmv3image_decoder_select="wmv3_decoder"
2467 xma1_decoder_select="wmapro_decoder"
2468 xma2_decoder_select="wmapro_decoder"
2469 zerocodec_decoder_select="zlib"
2470 zlib_decoder_select="zlib"
2471 zlib_encoder_select="zlib"
2472 zmbv_decoder_select="zlib"
2473 zmbv_encoder_select="zlib"
2474
2475 # hardware accelerators
2476 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2477 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2478 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2479 vaapi_deps="va_va_h"
2480 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2481 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2482 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2483 videotoolbox_deps="VideoToolbox_VideoToolbox_h pthreads"
2484 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework QuartzCore -framework CoreVideo"
2485 xvmc_deps="X11_extensions_XvMClib_h"
2486
2487 h263_vaapi_hwaccel_deps="vaapi"
2488 h263_vaapi_hwaccel_select="h263_decoder"
2489 h263_videotoolbox_hwaccel_deps="videotoolbox"
2490 h263_videotoolbox_hwaccel_select="h263_decoder"
2491 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2492 h264_d3d11va_hwaccel_deps="d3d11va"
2493 h264_d3d11va_hwaccel_select="h264_decoder"
2494 h264_dxva2_hwaccel_deps="dxva2"
2495 h264_dxva2_hwaccel_select="h264_decoder"
2496 h264_mmal_decoder_deps="mmal"
2497 h264_mmal_decoder_select="mmal"
2498 h264_mmal_hwaccel_deps="mmal"
2499 h264_qsv_hwaccel_deps="libmfx"
2500 h264_vaapi_hwaccel_deps="vaapi"
2501 h264_vaapi_hwaccel_select="h264_decoder"
2502 h264_vda_decoder_deps="vda"
2503 h264_vda_decoder_select="h264_decoder"
2504 h264_vda_hwaccel_deps="vda"
2505 h264_vda_hwaccel_select="h264_decoder"
2506 h264_vda_old_hwaccel_deps="vda"
2507 h264_vda_old_hwaccel_select="h264_decoder"
2508 h264_vdpau_decoder_deps="vdpau"
2509 h264_vdpau_decoder_select="h264_decoder"
2510 h264_vdpau_hwaccel_deps="vdpau"
2511 h264_vdpau_hwaccel_select="h264_decoder"
2512 h264_videotoolbox_hwaccel_deps="videotoolbox"
2513 h264_videotoolbox_hwaccel_select="h264_decoder"
2514 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2515 hevc_d3d11va_hwaccel_select="hevc_decoder"
2516 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2517 hevc_dxva2_hwaccel_select="hevc_decoder"
2518 hevc_qsv_hwaccel_deps="libmfx"
2519 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2520 hevc_vaapi_hwaccel_select="hevc_decoder"
2521 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2522 hevc_vdpau_hwaccel_select="hevc_decoder"
2523 mpeg_vdpau_decoder_deps="vdpau"
2524 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2525 mpeg_xvmc_hwaccel_deps="xvmc"
2526 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2527 mpeg1_vdpau_decoder_deps="vdpau"
2528 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2529 mpeg1_vdpau_hwaccel_deps="vdpau"
2530 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2531 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2532 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2533 mpeg1_xvmc_hwaccel_deps="xvmc"
2534 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2535 mpeg2_crystalhd_decoder_select="crystalhd"
2536 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2537 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2538 mpeg2_dxva2_hwaccel_deps="dxva2"
2539 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2540 mpeg2_mmal_decoder_deps="mmal"
2541 mpeg2_mmal_decoder_select="mmal"
2542 mpeg2_mmal_hwaccel_deps="mmal"
2543 mpeg2_qsv_hwaccel_deps="libmfx"
2544 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2545 mpeg2_vaapi_hwaccel_deps="vaapi"
2546 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2547 mpeg2_vdpau_hwaccel_deps="vdpau"
2548 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2549 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2550 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2551 mpeg2_xvmc_hwaccel_deps="xvmc"
2552 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2553 mpeg4_crystalhd_decoder_select="crystalhd"
2554 mpeg4_mmal_decoder_deps="mmal"
2555 mpeg4_mmal_decoder_select="mmal"
2556 mpeg4_mmal_hwaccel_deps="mmal"
2557 mpeg4_vaapi_hwaccel_deps="vaapi"
2558 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2559 mpeg4_vdpau_decoder_deps="vdpau"
2560 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2561 mpeg4_vdpau_hwaccel_deps="vdpau"
2562 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2563 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2564 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2565 msmpeg4_crystalhd_decoder_select="crystalhd"
2566 vc1_crystalhd_decoder_select="crystalhd"
2567 vc1_d3d11va_hwaccel_deps="d3d11va"
2568 vc1_d3d11va_hwaccel_select="vc1_decoder"
2569 vc1_dxva2_hwaccel_deps="dxva2"
2570 vc1_dxva2_hwaccel_select="vc1_decoder"
2571 vc1_mmal_decoder_deps="mmal"
2572 vc1_mmal_decoder_select="mmal"
2573 vc1_mmal_hwaccel_deps="mmal"
2574 vc1_qsv_hwaccel_deps="libmfx"
2575 vc1_qsv_hwaccel_select="qsvdec_vc1"
2576 vc1_vaapi_hwaccel_deps="vaapi"
2577 vc1_vaapi_hwaccel_select="vc1_decoder"
2578 vc1_vdpau_decoder_deps="vdpau"
2579 vc1_vdpau_decoder_select="vc1_decoder"
2580 vc1_vdpau_hwaccel_deps="vdpau"
2581 vc1_vdpau_hwaccel_select="vc1_decoder"
2582 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2583 vp9_d3d11va_hwaccel_select="vp9_decoder"
2584 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2585 vp9_dxva2_hwaccel_select="vp9_decoder"
2586 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9"
2587 vp9_vaapi_hwaccel_select="vp9_decoder"
2588 wmv3_crystalhd_decoder_select="crystalhd"
2589 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2590 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2591 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2592 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2593 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2594
2595 # parsers
2596 h264_parser_select="h264_decoder"
2597 hevc_parser_select="golomb"
2598 mpegvideo_parser_select="mpegvideo"
2599 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2600 vc1_parser_select="mpegvideo startcode vc1_decoder"
2601
2602 # bitstream_filters
2603 mjpeg2jpeg_bsf_select="jpegtables"
2604
2605 # external libraries
2606 chromaprint_muxer_deps="chromaprint"
2607 libcelt_decoder_deps="libcelt"
2608 libdcadec_decoder_deps="libdcadec"
2609 libfaac_encoder_deps="libfaac"
2610 libfaac_encoder_select="audio_frame_queue"
2611 libfdk_aac_decoder_deps="libfdk_aac"
2612 libfdk_aac_encoder_deps="libfdk_aac"
2613 libfdk_aac_encoder_select="audio_frame_queue"
2614 libgme_demuxer_deps="libgme"
2615 libgsm_decoder_deps="libgsm"
2616 libgsm_encoder_deps="libgsm"
2617 libgsm_ms_decoder_deps="libgsm"
2618 libgsm_ms_encoder_deps="libgsm"
2619 libilbc_decoder_deps="libilbc"
2620 libilbc_encoder_deps="libilbc"
2621 libkvazaar_encoder_deps="libkvazaar"
2622 libmodplug_demuxer_deps="libmodplug"
2623 libmp3lame_encoder_deps="libmp3lame"
2624 libmp3lame_encoder_select="audio_frame_queue"
2625 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2626 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2627 libopencore_amrnb_encoder_select="audio_frame_queue"
2628 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2629 libopenh264_encoder_deps="libopenh264"
2630 libopenjpeg_decoder_deps="libopenjpeg"
2631 libopenjpeg_encoder_deps="libopenjpeg"
2632 libopus_decoder_deps="libopus"
2633 libopus_encoder_deps="libopus"
2634 libopus_encoder_select="audio_frame_queue"
2635 libschroedinger_decoder_deps="libschroedinger"
2636 libschroedinger_encoder_deps="libschroedinger"
2637 libshine_encoder_deps="libshine"
2638 libshine_encoder_select="audio_frame_queue"
2639 libspeex_decoder_deps="libspeex"
2640 libspeex_encoder_deps="libspeex"
2641 libspeex_encoder_select="audio_frame_queue"
2642 libtheora_encoder_deps="libtheora"
2643 libtwolame_encoder_deps="libtwolame"
2644 libutvideo_decoder_deps="libutvideo"
2645 libutvideo_encoder_deps="libutvideo"
2646 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2647 libvorbis_decoder_deps="libvorbis"
2648 libvorbis_encoder_deps="libvorbis"
2649 libvorbis_encoder_select="audio_frame_queue"
2650 libvpx_vp8_decoder_deps="libvpx"
2651 libvpx_vp8_encoder_deps="libvpx"
2652 libvpx_vp9_decoder_deps="libvpx"
2653 libvpx_vp9_encoder_deps="libvpx"
2654 libwavpack_encoder_deps="libwavpack"
2655 libwebp_encoder_deps="libwebp"
2656 libwebp_anim_encoder_deps="libwebp"
2657 libx262_encoder_deps="libx262"
2658 libx264_encoder_deps="libx264"
2659 libx264rgb_encoder_deps="libx264"
2660 libx264rgb_encoder_select="libx264_encoder"
2661 libx265_encoder_deps="libx265"
2662 libxavs_encoder_deps="libxavs"
2663 libxvid_encoder_deps="libxvid"
2664 libzvbi_teletext_decoder_deps="libzvbi"
2665 nvenc_encoder_deps="nvenc"
2666 nvenc_h264_encoder_deps="nvenc"
2667 nvenc_hevc_encoder_deps="nvenc"
2668
2669 # demuxers / muxers
2670 ac3_demuxer_select="ac3_parser"
2671 asf_demuxer_select="riffdec"
2672 asf_o_demuxer_select="riffdec"
2673 asf_muxer_select="riffenc"
2674 asf_stream_muxer_select="asf_muxer"
2675 avi_demuxer_select="riffdec exif"
2676 avi_muxer_select="riffenc"
2677 avisynth_demuxer_deps="avisynth"
2678 avisynth_demuxer_select="riffdec"
2679 caf_demuxer_select="riffdec"
2680 dash_muxer_select="mp4_muxer"
2681 dirac_demuxer_select="dirac_parser"
2682 dts_demuxer_select="dca_parser"
2683 dtshd_demuxer_select="dca_parser"
2684 dv_demuxer_select="dvprofile"
2685 dv_muxer_select="dvprofile"
2686 dxa_demuxer_select="riffdec"
2687 eac3_demuxer_select="ac3_parser"
2688 f4v_muxer_select="mov_muxer"
2689 flac_demuxer_select="flac_parser"
2690 hds_muxer_select="flv_muxer"
2691 hls_muxer_select="mpegts_muxer"
2692 image2_alias_pix_demuxer_select="image2_demuxer"
2693 image2_brender_pix_demuxer_select="image2_demuxer"
2694 ipod_muxer_select="mov_muxer"
2695 ismv_muxer_select="mov_muxer"
2696 libnut_demuxer_deps="libnut"
2697 libnut_muxer_deps="libnut"
2698 matroska_audio_muxer_select="matroska_muxer"
2699 matroska_demuxer_select="riffdec"
2700 matroska_demuxer_suggest="bzlib lzo zlib"
2701 matroska_muxer_select="riffenc"
2702 mmf_muxer_select="riffenc"
2703 mov_demuxer_select="riffdec"
2704 mov_demuxer_suggest="zlib"
2705 mov_muxer_select="riffenc rtpenc_chain"
2706 mp3_demuxer_select="mpegaudio_parser"
2707 mp4_muxer_select="mov_muxer"
2708 mpegts_muxer_select="adts_muxer latm_muxer"
2709 mpegtsraw_demuxer_select="mpegts_demuxer"
2710 mxf_d10_muxer_select="mxf_muxer"
2711 mxf_opatom_muxer_select="mxf_muxer"
2712 nut_muxer_select="riffenc"
2713 nuv_demuxer_select="riffdec"
2714 oga_muxer_select="ogg_muxer"
2715 ogg_demuxer_select="dirac_parse"
2716 opus_muxer_select="ogg_muxer"
2717 psp_muxer_select="mov_muxer"
2718 rtp_demuxer_select="sdp_demuxer"
2719 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2720 rtsp_demuxer_select="http_protocol rtpdec"
2721 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2722 sap_demuxer_select="sdp_demuxer"
2723 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2724 sdp_demuxer_select="rtpdec"
2725 smoothstreaming_muxer_select="ismv_muxer"
2726 spdif_muxer_select="aac_parser"
2727 spx_muxer_select="ogg_muxer"
2728 swf_demuxer_suggest="zlib"
2729 tak_demuxer_select="tak_parser"
2730 tg2_muxer_select="mov_muxer"
2731 tgp_muxer_select="mov_muxer"
2732 vobsub_demuxer_select="mpegps_demuxer"
2733 w64_demuxer_select="wav_demuxer"
2734 w64_muxer_select="wav_muxer"
2735 wav_demuxer_select="riffdec"
2736 wav_muxer_select="riffenc"
2737 webm_muxer_select="riffenc"
2738 webm_dash_manifest_demuxer_select="matroska_demuxer"
2739 wtv_demuxer_select="riffdec"
2740 wtv_muxer_select="riffenc"
2741 xmv_demuxer_select="riffdec"
2742 xwma_demuxer_select="riffdec"
2743
2744 # indevs / outdevs
2745 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2746 alsa_outdev_deps="alsa_asoundlib_h"
2747 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2748 avfoundation_indev_select="avfoundation"
2749 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2750 caca_outdev_deps="libcaca"
2751 decklink_indev_deps="decklink pthreads"
2752 decklink_indev_extralibs="-lstdc++"
2753 decklink_outdev_deps="decklink pthreads"
2754 decklink_outdev_extralibs="-lstdc++"
2755 dshow_indev_deps="IBaseFilter"
2756 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2757 dv1394_indev_deps="dv1394"
2758 dv1394_indev_select="dv_demuxer"
2759 fbdev_indev_deps="linux_fb_h"
2760 fbdev_outdev_deps="linux_fb_h"
2761 gdigrab_indev_deps="CreateDIBSection"
2762 gdigrab_indev_extralibs="-lgdi32"
2763 gdigrab_indev_select="bmp_decoder"
2764 iec61883_indev_deps="libiec61883"
2765 jack_indev_deps="jack_jack_h"
2766 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2767 lavfi_indev_deps="avfilter"
2768 libcdio_indev_deps="libcdio"
2769 libdc1394_indev_deps="libdc1394"
2770 libv4l2_indev_deps="libv4l2"
2771 openal_indev_deps="openal"
2772 opengl_outdev_deps="opengl"
2773 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2774 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2775 pulse_indev_deps="libpulse"
2776 pulse_outdev_deps="libpulse"
2777 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2778 qtkit_indev_select="qtkit"
2779 sdl_outdev_deps="sdl"
2780 sndio_indev_deps="sndio_h"
2781 sndio_outdev_deps="sndio_h"
2782 v4l_indev_deps="linux_videodev_h"
2783 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2784 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2785 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2786 vfwcap_indev_extralibs="-lavicap32"
2787 x11grab_indev_deps="x11grab"
2788 x11grab_xcb_indev_deps="libxcb"
2789 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2790 xv_outdev_extralibs="-lXv -lX11 -lXext"
2791
2792 # protocols
2793 async_protocol_deps="threads"
2794 bluray_protocol_deps="libbluray"
2795 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2796 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2797 ffrtmpcrypt_protocol_select="tcp_protocol"
2798 ffrtmphttp_protocol_deps="!librtmp_protocol"
2799 ffrtmphttp_protocol_select="http_protocol"
2800 ftp_protocol_select="tcp_protocol"
2801 gopher_protocol_select="network"
2802 http_protocol_select="tcp_protocol"
2803 httpproxy_protocol_select="tcp_protocol"
2804 https_protocol_select="tls_protocol"
2805 icecast_protocol_select="http_protocol"
2806 librtmp_protocol_deps="librtmp"
2807 librtmpe_protocol_deps="librtmp"
2808 librtmps_protocol_deps="librtmp"
2809 librtmpt_protocol_deps="librtmp"
2810 librtmpte_protocol_deps="librtmp"
2811 libsmbclient_protocol_deps="libsmbclient gplv3"
2812 libssh_protocol_deps="libssh"
2813 mmsh_protocol_select="http_protocol"
2814 mmst_protocol_select="network"
2815 rtmp_protocol_deps="!librtmp_protocol"
2816 rtmp_protocol_select="tcp_protocol"
2817 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2818 rtmps_protocol_deps="!librtmp_protocol"
2819 rtmps_protocol_select="tls_protocol"
2820 rtmpt_protocol_select="ffrtmphttp_protocol"
2821 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2822 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2823 rtp_protocol_select="udp_protocol"
2824 sctp_protocol_deps="struct_sctp_event_subscribe"
2825 sctp_protocol_select="network"
2826 srtp_protocol_select="rtp_protocol"
2827 tcp_protocol_select="network"
2828 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
2829 tls_gnutls_protocol_select="tcp_protocol"
2830 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
2831 tls_openssl_protocol_select="tcp_protocol"
2832 tls_schannel_protocol_deps="schannel"
2833 tls_schannel_protocol_select="tcp_protocol"
2834 tls_securetransport_protocol_deps="securetransport"
2835 tls_securetransport_protocol_select="tcp_protocol"
2836 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2837 udp_protocol_select="network"
2838 udplite_protocol_select="network"
2839 unix_protocol_deps="sys_un_h"
2840 unix_protocol_select="network"
2841
2842 # filters
2843 afftfilt_filter_deps="avcodec"
2844 afftfilt_filter_select="fft"
2845 amovie_filter_deps="avcodec avformat"
2846 aresample_filter_deps="swresample"
2847 ass_filter_deps="libass"
2848 asyncts_filter_deps="avresample"
2849 atempo_filter_deps="avcodec"
2850 atempo_filter_select="rdft"
2851 azmq_filter_deps="libzmq"
2852 blackframe_filter_deps="gpl"
2853 boxblur_filter_deps="gpl"
2854 bs2b_filter_deps="libbs2b"
2855 colormatrix_filter_deps="gpl"
2856 cover_rect_filter_deps="avcodec avformat gpl"
2857 cropdetect_filter_deps="gpl"
2858 delogo_filter_deps="gpl"
2859 deshake_filter_select="pixelutils"
2860 drawtext_filter_deps="libfreetype"
2861 ebur128_filter_deps="gpl"
2862 eq_filter_deps="gpl"
2863 fftfilt_filter_deps="avcodec"
2864 fftfilt_filter_select="rdft"
2865 find_rect_filter_deps="avcodec avformat gpl"
2866 firequalizer_filter_deps="avcodec"
2867 firequalizer_filter_select="rdft"
2868 flite_filter_deps="libflite"
2869 frei0r_filter_deps="frei0r dlopen"
2870 frei0r_src_filter_deps="frei0r dlopen"
2871 fspp_filter_deps="gpl"
2872 geq_filter_deps="gpl"
2873 histeq_filter_deps="gpl"
2874 hqdn3d_filter_deps="gpl"
2875 interlace_filter_deps="gpl"
2876 kerndeint_filter_deps="gpl"
2877 ladspa_filter_deps="ladspa dlopen"
2878 mcdeint_filter_deps="avcodec gpl"
2879 movie_filter_deps="avcodec avformat"
2880 mpdecimate_filter_deps="gpl"
2881 mpdecimate_filter_select="pixelutils"
2882 mptestsrc_filter_deps="gpl"
2883 negate_filter_deps="lut_filter"
2884 nnedi_filter_deps="gpl"
2885 ocr_filter_deps="libtesseract"
2886 ocv_filter_deps="libopencv"
2887 owdenoise_filter_deps="gpl"
2888 pan_filter_deps="swresample"
2889 perspective_filter_deps="gpl"
2890 phase_filter_deps="gpl"
2891 pp7_filter_deps="gpl"
2892 pp_filter_deps="gpl postproc"
2893 pullup_filter_deps="gpl"
2894 removelogo_filter_deps="avcodec avformat swscale"
2895 repeatfields_filter_deps="gpl"
2896 resample_filter_deps="avresample"
2897 rubberband_filter_deps="librubberband"
2898 sab_filter_deps="gpl swscale"
2899 scale2ref_filter_deps="swscale"
2900 scale_filter_deps="swscale"
2901 select_filter_select="pixelutils"
2902 showcqt_filter_deps="avcodec avformat swscale"
2903 showcqt_filter_select="fft"
2904 showfreqs_filter_deps="avcodec"
2905 showfreqs_filter_select="fft"
2906 showspectrum_filter_deps="avcodec"
2907 showspectrum_filter_select="fft"
2908 showspectrumpic_filter_deps="avcodec"
2909 showspectrumpic_filter_select="fft"
2910 smartblur_filter_deps="gpl swscale"
2911 sofalizer_filter_deps="netcdf avcodec"
2912 sofalizer_filter_select="fft"
2913 spectrumsynth_filter_deps="avcodec"
2914 spectrumsynth_filter_select="fft"
2915 spp_filter_deps="gpl avcodec"
2916 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2917 stereo3d_filter_deps="gpl"
2918 subtitles_filter_deps="avformat avcodec libass"
2919 super2xsai_filter_deps="gpl"
2920 pixfmts_super2xsai_test_deps="super2xsai_filter"
2921 tinterlace_filter_deps="gpl"
2922 tinterlace_merge_test_deps="tinterlace_filter"
2923 tinterlace_pad_test_deps="tinterlace_filter"
2924 uspp_filter_deps="gpl avcodec"
2925 vidstabdetect_filter_deps="libvidstab"
2926 vidstabtransform_filter_deps="libvidstab"
2927 zmq_filter_deps="libzmq"
2928 zoompan_filter_deps="swscale"
2929 zscale_filter_deps="libzimg"
2930
2931 # examples
2932 avcodec_example_deps="avcodec avutil"
2933 avio_dir_cmd="avformat avutil"
2934 avio_reading="avformat avcodec avutil"
2935 decoding_encoding_example_deps="avcodec avformat avutil"
2936 demuxing_decoding_example_deps="avcodec avformat avutil"
2937 extract_mvs_example_deps="avcodec avformat avutil"
2938 filter_audio_example_deps="avfilter avutil"
2939 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2940 filtering_video_example_deps="avfilter avcodec avformat avutil"
2941 metadata_example_deps="avformat avutil"
2942 muxing_example_deps="avcodec avformat avutil swscale"
2943 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2944 remuxing_example_deps="avcodec avformat avutil"
2945 resampling_audio_example_deps="avutil swresample"
2946 scaling_video_example_deps="avutil swscale"
2947 transcode_aac_example_deps="avcodec avformat swresample"
2948 transcoding_example_deps="avfilter avcodec avformat avutil"
2949
2950 # libraries, in linking order
2951 avcodec_deps="avutil"
2952 avdevice_deps="avformat avcodec avutil"
2953 avfilter_deps="avutil"
2954 avformat_deps="avcodec avutil"
2955 avresample_deps="avutil"
2956 postproc_deps="avutil gpl"
2957 swresample_deps="avutil"
2958 swscale_deps="avutil"
2959
2960 # programs
2961 ffmpeg_deps="avcodec avfilter avformat swresample"
2962 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2963                null_filter
2964                setpts_filter trim_filter"
2965 ffplay_deps="avcodec avformat swscale swresample sdl"
2966 ffplay_libs='$sdl_libs'
2967 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2968 ffprobe_deps="avcodec avformat"
2969 ffserver_deps="avformat fork sarestart"
2970 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2971
2972 # documentation
2973 podpages_deps="perl"
2974 manpages_deps="perl pod2man"
2975 htmlpages_deps="perl"
2976 htmlpages_deps_any="makeinfo_html texi2html"
2977 txtpages_deps="perl makeinfo"
2978 doc_deps_any="manpages htmlpages podpages txtpages"
2979
2980 # default parameters
2981
2982 logfile="config.log"
2983
2984 # installation paths
2985 prefix_default="/usr/local"
2986 bindir_default='${prefix}/bin'
2987 datadir_default='${prefix}/share/ffmpeg'
2988 docdir_default='${prefix}/share/doc/ffmpeg'
2989 incdir_default='${prefix}/include'
2990 libdir_default='${prefix}/lib'
2991 mandir_default='${prefix}/share/man'
2992
2993 # toolchain
2994 ar_default="ar"
2995 cc_default="gcc"
2996 cxx_default="g++"
2997 host_cc_default="gcc"
2998 cp_f="cp -f"
2999 doxygen_default="doxygen"
3000 install="install"
3001 ln_s="ln -s -f"
3002 nm_default="nm -g"
3003 objformat="elf"
3004 pkg_config_default=pkg-config
3005 ranlib_default="ranlib"
3006 strip_default="strip"
3007 yasmexe_default="yasm"
3008 windres_default="windres"
3009
3010 # OS
3011 target_os_default=$(tolower $(uname -s))
3012 host_os=$target_os_default
3013
3014 # machine
3015 if test "$target_os_default" = aix; then
3016     arch_default=$(uname -p)
3017     strip_default="strip -X32_64"
3018 else
3019     arch_default=$(uname -m)
3020 fi
3021 cpu="generic"
3022 intrinsics="none"
3023
3024 # configurable options
3025 enable $PROGRAM_LIST
3026 enable $DOCUMENT_LIST
3027 enable $EXAMPLE_LIST
3028 enable $(filter_out avresample $LIBRARY_LIST)
3029 enable stripping
3030
3031 enable asm
3032 enable debug
3033 enable doc
3034 enable faan faandct faanidct
3035 enable optimizations
3036 enable runtime_cpudetect
3037 enable safe_bitstream_reader
3038 enable static
3039 enable swscale_alpha
3040 enable valgrind_backtrace
3041
3042 sws_max_filter_size_default=256
3043 set_default sws_max_filter_size
3044
3045 # Enable hwaccels by default.
3046 enable d3d11va dxva2 vaapi vda vdpau videotoolbox xvmc
3047 enable xlib
3048
3049 # build settings
3050 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3051 LIBPREF="lib"
3052 LIBSUF=".a"
3053 FULLNAME='$(NAME)$(BUILDSUF)'
3054 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3055 SLIBPREF="lib"
3056 SLIBSUF=".so"
3057 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3058 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3059 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3060 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3061 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3062 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3063
3064 asflags_filter=echo
3065 cflags_filter=echo
3066 ldflags_filter=echo
3067
3068 AS_C='-c'
3069 AS_O='-o $@'
3070 CC_C='-c'
3071 CC_E='-E -o $@'
3072 CC_O='-o $@'
3073 CXX_C='-c'
3074 CXX_O='-o $@'
3075 OBJCC_C='-c'
3076 OBJCC_E='-E -o $@'
3077 OBJCC_O='-o $@'
3078 LD_O='-o $@'
3079 LD_LIB='-l%'
3080 LD_PATH='-L'
3081 HOSTCC_C='-c'
3082 HOSTCC_E='-E -o $@'
3083 HOSTCC_O='-o $@'
3084 HOSTLD_O='-o $@'
3085
3086 host_libs='-lm'
3087 host_cflags_filter=echo
3088 host_ldflags_filter=echo
3089
3090 target_path='$(CURDIR)'
3091
3092 # since the object filename is not given with the -MM flag, the compiler
3093 # is only able to print the basename, and we must add the path ourselves
3094 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3095 DEPFLAGS='-MM'
3096
3097 # find source path
3098 if test -f configure; then
3099     source_path=.
3100 else
3101     source_path=$(cd $(dirname "$0"); pwd)
3102     case "$source_path" in
3103         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3104     esac
3105     test -e "$source_path/config.h" &&
3106         die "Out of tree builds are impossible with config.h in source dir."
3107 fi
3108
3109 for v in "$@"; do
3110     r=${v#*=}
3111     l=${v%"$r"}
3112     r=$(sh_quote "$r")
3113     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3114 done
3115
3116 find_things(){
3117     thing=$1
3118     pattern=$2
3119     file=$source_path/$3
3120     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3121 }
3122
3123 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3124 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3125 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3126 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3127 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
3128 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3129 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3130 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3131 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3132 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
3133 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3134
3135 ALL_COMPONENTS="
3136     $BSF_LIST
3137     $DECODER_LIST
3138     $DEMUXER_LIST
3139     $ENCODER_LIST
3140     $FILTER_LIST
3141     $HWACCEL_LIST
3142     $INDEV_LIST
3143     $MUXER_LIST
3144     $OUTDEV_LIST
3145     $PARSER_LIST
3146     $PROTOCOL_LIST
3147 "
3148
3149 for n in $COMPONENT_LIST; do
3150     v=$(toupper ${n%s})_LIST
3151     eval enable \$$v
3152     eval ${n}_if_any="\$$v"
3153 done
3154
3155 enable $ARCH_EXT_LIST
3156
3157 die_unknown(){
3158     echo "Unknown option \"$1\"."
3159     echo "See $0 --help for available options."
3160     exit 1
3161 }
3162
3163 print_in_columns() {
3164     cols=$(expr $ncols / 24)
3165     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3166 }
3167
3168 show_list() {
3169     suffix=_$1
3170     shift
3171     echo $* | sed s/$suffix//g | print_in_columns
3172     exit 0
3173 }
3174
3175 rand_list(){
3176     IFS=', '
3177     set -- $*
3178     unset IFS
3179     for thing; do
3180         comp=${thing%:*}
3181         prob=${thing#$comp}
3182         prob=${prob#:}
3183         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3184         echo "prob ${prob:-0.5}"
3185         printf '%s\n' $comp
3186     done
3187 }
3188
3189 do_random(){
3190     action=$1
3191     shift
3192     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3193     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3194 }
3195
3196 for opt do
3197     optval="${opt#*=}"
3198     case "$opt" in
3199         --extra-ldflags=*)
3200             add_ldflags $optval
3201         ;;
3202         --extra-ldexeflags=*)
3203             add_ldexeflags $optval
3204         ;;
3205         --extra-ldlibflags=*)
3206             add_ldlibflags $optval
3207         ;;
3208         --extra-libs=*)
3209             add_extralibs $optval
3210         ;;
3211         --disable-devices)
3212             disable $INDEV_LIST $OUTDEV_LIST
3213         ;;
3214         --enable-debug=*)
3215             debuglevel="$optval"
3216         ;;
3217         --disable-programs)
3218             disable $PROGRAM_LIST
3219         ;;
3220         --disable-everything)
3221             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3222         ;;
3223         --disable-all)
3224             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3225             disable $LIBRARY_LIST $PROGRAM_LIST doc
3226             enable avutil
3227         ;;
3228         --enable-random|--disable-random)
3229             action=${opt%%-random}
3230             do_random ${action#--} $COMPONENT_LIST
3231         ;;
3232         --enable-random=*|--disable-random=*)
3233             action=${opt%%-random=*}
3234             do_random ${action#--} $optval
3235         ;;
3236         --enable-*=*|--disable-*=*)
3237             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3238             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3239             eval list=\$$(toupper $thing)_LIST
3240             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3241             list=$(filter "$name" $list)
3242             [ "$list" = "" ] && warn "Option $opt did not match anything"
3243             $action $list
3244         ;;
3245         --enable-?*|--disable-?*)
3246             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3247             if is_in $option $COMPONENT_LIST; then
3248                 test $action = disable && action=unset
3249                 eval $action \$$(toupper ${option%s})_LIST
3250             elif is_in $option $CMDLINE_SELECT; then
3251                 $action $option
3252             else
3253                 die_unknown $opt
3254             fi
3255         ;;
3256         --list-*)
3257             NAME="${opt#--list-}"
3258             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3259             NAME=${NAME%s}
3260             eval show_list $NAME \$$(toupper $NAME)_LIST
3261         ;;
3262         --help|-h) show_help
3263         ;;
3264         --fatal-warnings) enable fatal_warnings
3265         ;;
3266         *)
3267             optname="${opt%%=*}"
3268             optname="${optname#--}"
3269             optname=$(echo "$optname" | sed 's/-/_/g')
3270             if is_in $optname $CMDLINE_SET; then
3271                 eval $optname='$optval'
3272             elif is_in $optname $CMDLINE_APPEND; then
3273                 append $optname "$optval"
3274             else
3275                 die_unknown $opt
3276             fi
3277         ;;
3278     esac
3279 done
3280
3281 for e in $env; do
3282     eval "export $e"
3283 done
3284
3285 disabled logging && logfile=/dev/null
3286
3287 # Disable all the library-specific components if the library itself
3288 # is disabled, see AVCODEC_LIST and following _LIST variables.
3289
3290 disable_components(){
3291     disabled ${1} && disable $(
3292         eval components="\$$(toupper ${1})_COMPONENTS"
3293         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3294     )
3295 }
3296
3297 map 'disable_components $v' $LIBRARY_LIST
3298
3299 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3300 set >> $logfile
3301
3302 test -n "$valgrind" && toolchain="valgrind-memcheck"
3303
3304 case "$toolchain" in
3305     *-asan)
3306         cc_default="${toolchain%-asan}"
3307         add_cflags  -fsanitize=address
3308         add_ldflags -fsanitize=address
3309     ;;
3310     *-tsan)
3311         cc_default="${toolchain%-tsan}"
3312         add_cflags  -fsanitize=thread -pie
3313         add_ldflags -fsanitize=thread -pie
3314         case "$toolchain" in
3315             gcc-tsan)
3316                 add_cflags  -fPIC
3317                 add_ldflags -fPIC
3318                 ;;
3319         esac
3320     ;;
3321     *-usan)
3322         cc_default="${toolchain%-usan}"
3323         add_cflags  -fsanitize=undefined
3324         add_ldflags -fsanitize=undefined
3325     ;;
3326     valgrind-*)
3327         target_exec_default="valgrind"
3328         case "$toolchain" in
3329             valgrind-massif)
3330                 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"
3331                 ;;
3332             valgrind-memcheck)
3333                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3334                 ;;
3335         esac
3336     ;;
3337     msvc)
3338         # Check whether the current MSVC version needs the C99 converter.
3339         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3340         # support enough of C99 to build ffmpeg. Default to the new
3341         # behaviour if the regexp was unable to match anything, since this
3342         # successfully parses the version number of existing supported
3343         # versions that require the converter (MSVC 2010 and 2012).
3344         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3345         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3346             cc_default="cl"
3347         else
3348             cc_default="c99wrap cl"
3349         fi
3350         ld_default="$source_path/compat/windows/mslink"
3351         nm_default="dumpbin -symbols"
3352         ar_default="lib"
3353         case "$arch" in
3354         arm*)
3355             as_default="armasm"
3356             ;;
3357         esac
3358         target_os_default="win32"
3359         # Use a relative path for TMPDIR. This makes sure all the
3360         # ffconf temp files are written with a relative path, avoiding
3361         # issues with msys/win32 path conversion for MSVC parameters
3362         # such as -Fo<file> or -out:<file>.
3363         TMPDIR=.
3364     ;;
3365     icl)
3366         cc_default="icl"
3367         ld_default="xilink"
3368         nm_default="dumpbin -symbols"
3369         ar_default="xilib"
3370         target_os_default="win32"
3371         TMPDIR=.
3372     ;;
3373     gcov)
3374         add_cflags  -fprofile-arcs -ftest-coverage
3375         add_ldflags -fprofile-arcs -ftest-coverage
3376     ;;
3377     hardened)
3378         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3379         add_cflags   -fno-strict-overflow -fstack-protector-all
3380         add_ldflags  -Wl,-z,relro -Wl,-z,now
3381     ;;
3382     ?*)
3383         die "Unknown toolchain $toolchain"
3384     ;;
3385 esac
3386
3387 test -n "$cross_prefix" && enable cross_compile
3388
3389 if enabled cross_compile; then
3390     test -n "$arch" && test -n "$target_os" ||
3391         die "Must specify target arch and OS when cross-compiling"
3392 fi
3393
3394 ar_default="${cross_prefix}${ar_default}"
3395 cc_default="${cross_prefix}${cc_default}"
3396 cxx_default="${cross_prefix}${cxx_default}"
3397 nm_default="${cross_prefix}${nm_default}"
3398 pkg_config_default="${cross_prefix}${pkg_config_default}"
3399 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3400     ranlib_default="${cross_prefix}${ranlib_default} -D"
3401 else
3402     ranlib_default="${cross_prefix}${ranlib_default}"
3403 fi
3404 strip_default="${cross_prefix}${strip_default}"
3405 windres_default="${cross_prefix}${windres_default}"
3406
3407 sysinclude_default="${sysroot}/usr/include"
3408
3409 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3410     target_exec target_os yasmexe
3411 enabled cross_compile || host_cc_default=$cc
3412 set_default host_cc
3413
3414 pkg_config_fail_message=""
3415 if ! $pkg_config --version >/dev/null 2>&1; then
3416     warn "$pkg_config not found, library detection may fail."
3417     pkg_config=false
3418 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3419     pkg_config_fail_message="
3420 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3421 fi
3422
3423 if test $doxygen != $doxygen_default && \
3424   ! $doxygen --version >/dev/null 2>&1; then
3425     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3426 fi
3427
3428 exesuf() {
3429     case $1 in
3430         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3431     esac
3432 }
3433
3434 EXESUF=$(exesuf $target_os)
3435 HOSTEXESUF=$(exesuf $host_os)
3436
3437 # set temporary file name
3438 : ${TMPDIR:=$TEMPDIR}
3439 : ${TMPDIR:=$TMP}
3440 : ${TMPDIR:=/tmp}
3441
3442 if [ -n "$tempprefix" ] ; then
3443     mktemp(){
3444         echo $tempprefix.${HOSTNAME}.${UID}
3445     }
3446 elif ! check_cmd mktemp -u XXXXXX; then
3447     # simple replacement for missing mktemp
3448     # NOT SAFE FOR GENERAL USE
3449     mktemp(){
3450         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3451     }
3452 fi
3453
3454 tmpfile(){
3455     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3456         (set -C; exec > $tmp) 2>/dev/null ||
3457         die "Unable to create temporary file in $TMPDIR."
3458     append TMPFILES $tmp
3459     eval $1=$tmp
3460 }
3461
3462 trap 'rm -f -- $TMPFILES' EXIT
3463
3464 tmpfile TMPASM .asm
3465 tmpfile TMPC   .c
3466 tmpfile TMPCPP .cpp
3467 tmpfile TMPE   $EXESUF
3468 tmpfile TMPH   .h
3469 tmpfile TMPM   .m
3470 tmpfile TMPO   .o
3471 tmpfile TMPS   .S
3472 tmpfile TMPSH  .sh
3473 tmpfile TMPV   .ver
3474
3475 unset -f mktemp
3476
3477 chmod +x $TMPE
3478
3479 # make sure we can execute files in $TMPDIR
3480 cat > $TMPSH 2>> $logfile <<EOF
3481 #! /bin/sh
3482 EOF
3483 chmod +x $TMPSH >> $logfile 2>&1
3484 if ! $TMPSH >> $logfile 2>&1; then
3485     cat <<EOF
3486 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3487 variable to another directory and make sure that it is not mounted noexec.
3488 EOF
3489     die "Sanity test failed."
3490 fi
3491
3492 armasm_flags(){
3493     for flag; do
3494         case $flag in
3495             # Filter out MSVC cl.exe options from cflags that shouldn't
3496             # be passed to gas-preprocessor
3497             -M[TD]*)                                            ;;
3498             *)                  echo $flag                      ;;
3499         esac
3500    done
3501 }
3502
3503 ccc_flags(){
3504     for flag; do
3505         case $flag in
3506             -std=c99)           echo -c99                       ;;
3507             -mcpu=*)            echo -arch ${flag#*=}           ;;
3508             -mieee)             echo -ieee                      ;;
3509             -O*|-fast)          echo $flag                      ;;
3510             -fno-math-errno)    echo -assume nomath_errno       ;;
3511             -g)                 echo -g3                        ;;
3512             -Wall)              echo -msg_enable level2         ;;
3513             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3514             -Wl,*)              echo $flag                      ;;
3515             -f*|-W*)                                            ;;
3516             *)                  echo $flag                      ;;
3517         esac
3518    done
3519 }
3520
3521 cparser_flags(){
3522     for flag; do
3523         case $flag in
3524             -Wno-switch)             echo -Wno-switch-enum ;;
3525             -Wno-format-zero-length) ;;
3526             -Wdisabled-optimization) ;;
3527             -Wno-pointer-sign)       echo -Wno-other ;;
3528             *)                       echo $flag ;;
3529         esac
3530     done
3531 }
3532
3533 msvc_common_flags(){
3534     for flag; do
3535         case $flag in
3536             # In addition to specifying certain flags under the compiler
3537             # specific filters, they must be specified here as well or else the
3538             # generic catch all at the bottom will print the original flag.
3539             -Wall)                ;;
3540             -std=c99)             ;;
3541             # Common flags
3542             -fomit-frame-pointer) ;;
3543             -g)                   echo -Z7 ;;
3544             -fno-math-errno)      ;;
3545             -fno-common)          ;;
3546             -fno-signed-zeros)    ;;
3547             -fPIC)                ;;
3548             -mthumb)              ;;
3549             -march=*)             ;;
3550             -lz)                  echo zlib.lib ;;
3551             -lavifil32)           echo vfw32.lib ;;
3552             -lavicap32)           echo vfw32.lib user32.lib ;;
3553             -lx264)               echo libx264.lib ;;
3554             -l*)                  echo ${flag#-l}.lib ;;
3555             -LARGEADDRESSAWARE)   echo $flag ;;
3556             -L*)                  echo -libpath:${flag#-L} ;;
3557             *)                    echo $flag ;;
3558         esac
3559     done
3560 }
3561
3562 msvc_flags(){
3563     msvc_common_flags "$@"
3564     for flag; do
3565         case $flag in
3566             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3567                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3568                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3569                                        -wd4307 \
3570                                        -wd4273 -wd4554 -wd4701 ;;
3571         esac
3572     done
3573 }
3574
3575 icl_flags(){
3576     msvc_common_flags "$@"
3577     for flag; do
3578         case $flag in
3579             # Despite what Intel's documentation says -Wall, which is supported
3580             # on Windows, does enable remarks so disable them here.
3581             -Wall)                echo $flag -Qdiag-disable:remark ;;
3582             -std=c99)             echo -Qstd=c99 ;;
3583             -flto)                echo -ipo ;;
3584         esac
3585     done
3586 }
3587
3588 icc_flags(){
3589     for flag; do
3590         case $flag in
3591             -flto)                echo -ipo ;;
3592             *)                    echo $flag ;;
3593         esac
3594     done
3595 }
3596
3597 pgi_flags(){
3598     for flag; do
3599         case $flag in
3600             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3601             -fomit-frame-pointer) echo -Mnoframe ;;
3602             -g)                   echo -gopt ;;
3603             *)                    echo $flag ;;
3604         esac
3605     done
3606 }
3607
3608 suncc_flags(){
3609     for flag; do
3610         case $flag in
3611             -march=*|-mcpu=*)
3612                 case "${flag#*=}" in
3613                     native)                   echo -xtarget=native       ;;
3614                     v9|niagara)               echo -xarch=sparc          ;;
3615                     ultrasparc)               echo -xarch=sparcvis       ;;
3616                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3617                     i586|pentium)             echo -xchip=pentium        ;;
3618                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3619                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3620                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3621                     pentium4*)          echo -xtarget=pentium4           ;;
3622                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3623                     *-sse3)             echo -xarch=sse3                 ;;
3624                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3625                     bonnell)                   echo -xarch=ssse3         ;;
3626                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3627                     westmere)                  echo -xtarget=westmere    ;;
3628                     silvermont)                echo -xarch=sse4_2        ;;
3629                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3630                     core-avx*|ivybridge|haswell|broadwell)
3631                                                echo -xarch=avx           ;;
3632                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3633                     btver1)                    echo -xarch=amdsse4a      ;;
3634                     btver2|bdver*)             echo -xarch=avx           ;;
3635                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3636                     k8|opteron|athlon64|athlon-fx)
3637                                                echo -xarch=sse2a         ;;
3638                     athlon*)                   echo -xarch=pentium_proa  ;;
3639                 esac
3640                 ;;
3641             -std=c99)             echo -xc99              ;;
3642             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3643             -fPIC)                echo -KPIC -xcode=pic32 ;;
3644             -W*,*)                echo $flag              ;;
3645             -f*-*|-W*|-mimpure-text)                      ;;
3646             -shared)              echo -G                 ;;
3647             *)                    echo $flag              ;;
3648         esac
3649     done
3650 }
3651
3652 tms470_flags(){
3653     for flag; do
3654         case $flag in
3655             -march=*|-mcpu=*)
3656                 case "${flag#*=}" in
3657                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3658                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3659                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3660                     armv6*|arm11*)          echo -mv=6   ;;
3661                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3662                                             echo -mv=5e  ;;
3663                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3664                 esac
3665                 ;;
3666             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3667             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3668             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3669             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3670             -msoft-float)   echo --float_support=vfplib       ;;
3671             -O[0-3]|-mf=*)  echo $flag                        ;;
3672             -g)             echo -g -mn                       ;;
3673             -pds=*)         echo $flag                        ;;
3674             -D*|-I*)        echo $flag                        ;;
3675             --gcc|--abi=*)  echo $flag                        ;;
3676             -me)            echo $flag                        ;;
3677         esac
3678     done
3679 }
3680
3681 probe_cc(){
3682     pfx=$1
3683     _cc=$2
3684     first=$3
3685
3686     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3687     unset _ld_o _ldflags _ld_lib _ld_path
3688     unset _depflags _DEPCMD _DEPFLAGS
3689     _flags_filter=echo
3690
3691     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3692         true # no-op to avoid reading stdin in following checks
3693     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3694         _type=llvm_gcc
3695         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3696         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3697         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3698         _cflags_speed='-O3'
3699         _cflags_size='-Os'
3700     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3701         _type=gcc
3702         gcc_version=$($_cc --version | head -n1)
3703         gcc_basever=$($_cc -dumpversion)
3704         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3705         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3706         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3707         case $gcc_basever in
3708             2) ;;
3709             2.*) ;;
3710             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3711         esac
3712         if [ "$first" = true ]; then
3713             case $gcc_basever in
3714                 4.2*)
3715                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3716             esac
3717         fi
3718         _cflags_speed='-O3'
3719         _cflags_size='-Os'
3720     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3721         _type=icc
3722         _ident=$($_cc --version | head -n1)
3723         _depflags='-MMD'
3724         _cflags_speed='-O3'
3725         _cflags_size='-Os'
3726         _cflags_noopt='-O1'
3727         _flags_filter=icc_flags
3728     elif $_cc -v 2>&1 | grep -q xlc; then
3729         _type=xlc
3730         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3731         _cflags_speed='-O5'
3732         _cflags_size='-O5 -qcompact'
3733     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3734         _type=ccc
3735         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3736         _DEPFLAGS='-M'
3737         _cflags_speed='-fast'
3738         _cflags_size='-O1'
3739         _flags_filter=ccc_flags
3740     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3741         test -d "$sysroot" || die "No valid sysroot specified."
3742         _type=armcc
3743         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3744         armcc_conf="$PWD/armcc.conf"
3745         $_cc --arm_linux_configure                 \
3746              --arm_linux_config_file="$armcc_conf" \
3747              --configure_sysroot="$sysroot"        \
3748              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3749              die "Error creating armcc configuration file."
3750         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3751         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3752         as_default="${cross_prefix}gcc"
3753         _depflags='-MMD'
3754         _cflags_speed='-O3'
3755         _cflags_size='-Os'
3756     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3757         _type=tms470
3758         _ident=$($_cc -version | head -n1 | tr -s ' ')
3759         _flags='--gcc --abi=eabi -me'
3760         _cc_e='-ppl -fe=$@'
3761         _cc_o='-fe=$@'
3762         _depflags='-ppa -ppd=$(@:.o=.d)'
3763         _cflags_speed='-O3 -mf=5'
3764         _cflags_size='-O3 -mf=2'
3765         _flags_filter=tms470_flags
3766     elif $_cc -v 2>&1 | grep -q clang; then
3767         _type=clang
3768         _ident=$($_cc --version 2>/dev/null | head -n1)
3769         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3770         _cflags_speed='-O3'
3771         _cflags_size='-Os'
3772     elif $_cc -V 2>&1 | grep -q Sun; then
3773         _type=suncc
3774         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3775         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3776         _DEPFLAGS='-xM1 -xc99'
3777         _ldflags='-std=c99'
3778         _cflags_speed='-O5'
3779         _cflags_size='-O5 -xspace'
3780         _flags_filter=suncc_flags
3781     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3782         _type=pathscale
3783         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3784         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3785         _cflags_speed='-O2'
3786         _cflags_size='-Os'
3787         _flags_filter='filter_out -Wdisabled-optimization'
3788     elif $_cc -v 2>&1 | grep -q Open64; then
3789         _type=open64
3790         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3791         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3792         _cflags_speed='-O2'
3793         _cflags_size='-Os'
3794         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3795     elif $_cc -V 2>&1 | grep -q Portland; then
3796         _type=pgi
3797         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3798         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3799         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3800         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3801         _cflags_noopt="-O"
3802         _flags_filter=pgi_flags
3803     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3804         _type=armasm
3805         _ident=$($_cc | head -n1)
3806         # 4509: "This form of conditional instruction is deprecated"
3807         _flags="-nologo -ignore 4509"
3808         _flags_filter=armasm_flags
3809     elif $_cc 2>&1 | grep -q Intel; then
3810         _type=icl
3811         _ident=$($_cc 2>&1 | head -n1)
3812         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3813         # Not only is O3 broken on 13.x+ but it is slower on all previous
3814         # versions (tested) as well.
3815         _cflags_speed="-O2"
3816         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3817         if $_cc 2>&1 | grep -q Linker; then
3818             _ld_o='-out:$@'
3819         else
3820             _ld_o='-Fe$@'
3821         fi
3822         _cc_o='-Fo$@'
3823         _cc_e='-P'
3824         _flags_filter=icl_flags
3825         _ld_lib='lib%.a'
3826         _ld_path='-libpath:'
3827         # -Qdiag-error to make icl error when seeing certain unknown arguments
3828         _flags='-nologo -Qdiag-error:4044,10157'
3829         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3830         # with MSVC which enables it by default.
3831         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3832         disable stripping
3833     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3834         _type=msvc
3835         _ident=$($_cc 2>&1 | head -n1)
3836         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3837         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3838         _cflags_speed="-O2"
3839         _cflags_size="-O1"
3840         if $_cc -nologo- 2>&1 | grep -q Linker; then
3841             _ld_o='-out:$@'
3842         else
3843             _ld_o='-Fe$@'
3844         fi
3845         _cc_o='-Fo$@'
3846         _cc_e='-P -Fi$@'
3847         _flags_filter=msvc_flags
3848         _ld_lib='lib%.a'
3849         _ld_path='-libpath:'
3850         _flags='-nologo'
3851         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
3852         disable stripping
3853     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3854         _type=cparser
3855         _ident=$($_cc --version | head -n1)
3856         _depflags='-MMD'
3857         _cflags_speed='-O4'
3858         _cflags_size='-O2'
3859         _flags_filter=cparser_flags
3860     fi
3861
3862     eval ${pfx}_type=\$_type
3863     eval ${pfx}_ident=\$_ident
3864 }
3865
3866 set_ccvars(){
3867     eval ${1}_C=\${_cc_c-\${${1}_C}}
3868     eval ${1}_E=\${_cc_e-\${${1}_E}}
3869     eval ${1}_O=\${_cc_o-\${${1}_O}}
3870
3871     if [ -n "$_depflags" ]; then
3872         eval ${1}_DEPFLAGS=\$_depflags
3873     else
3874         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3875         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3876         eval DEP${1}FLAGS=\$_flags
3877     fi
3878 }
3879
3880 probe_cc cc "$cc" "true"
3881 cflags_filter=$_flags_filter
3882 cflags_speed=$_cflags_speed
3883 cflags_size=$_cflags_size
3884 cflags_noopt=$_cflags_noopt
3885 add_cflags $_flags $_cflags
3886 cc_ldflags=$_ldflags
3887 set_ccvars CC
3888
3889 probe_cc hostcc "$host_cc"
3890 host_cflags_filter=$_flags_filter
3891 add_host_cflags  $_flags $_cflags
3892 set_ccvars HOSTCC
3893
3894 test -n "$cc_type" && enable $cc_type ||
3895     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3896
3897 : ${as_default:=$cc}
3898 : ${objcc_default:=$cc}
3899 : ${dep_cc_default:=$cc}
3900 : ${ld_default:=$cc}
3901 : ${host_ld_default:=$host_cc}
3902 set_default ar as objcc dep_cc ld host_ld windres
3903
3904 probe_cc as "$as"
3905 asflags_filter=$_flags_filter
3906 add_asflags $_flags $_cflags
3907 set_ccvars AS
3908
3909 probe_cc objcc "$objcc"
3910 objcflags_filter=$_flags_filter
3911 add_objcflags $_flags $_cflags
3912 set_ccvars OBJC
3913
3914 probe_cc ld "$ld"
3915 ldflags_filter=$_flags_filter
3916 add_ldflags $_flags $_ldflags
3917 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3918 LD_O=${_ld_o-$LD_O}
3919 LD_LIB=${_ld_lib-$LD_LIB}
3920 LD_PATH=${_ld_path-$LD_PATH}
3921
3922 probe_cc hostld "$host_ld"
3923 host_ldflags_filter=$_flags_filter
3924 add_host_ldflags $_flags $_ldflags
3925 HOSTLD_O=${_ld_o-$HOSTLD_O}
3926
3927 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3928     probe_cc depcc "$dep_cc"
3929     CCDEP=${_DEPCMD:-$DEPCMD}
3930     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3931     DEPCCFLAGS=$_flags
3932 fi
3933
3934 if $ar 2>&1 | grep -q Microsoft; then
3935     arflags="-nologo"
3936     ar_o='-out:$@'
3937 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3938     arflags="rq"
3939     ar_o='$@'
3940 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3941     arflags='-Xany -r -c'
3942     ar_o='$@'
3943 elif $ar 2>&1 | grep -q "\[D\] "; then
3944     arflags="rcD"
3945     ar_o='$@'
3946 else
3947     arflags="rc"
3948     ar_o='$@'
3949 fi
3950
3951 add_cflags $extra_cflags
3952 add_cxxflags $extra_cxxflags
3953 add_objcflags $extra_objcflags
3954 add_asflags $extra_cflags
3955
3956 if test -n "$sysroot"; then
3957     case "$cc_type" in
3958         gcc|llvm_gcc|clang)
3959             add_cppflags --sysroot="$sysroot"
3960             add_ldflags --sysroot="$sysroot"
3961 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3962             add_cppflags -isysroot "$sysroot"
3963             add_ldflags -isysroot "$sysroot"
3964         ;;
3965         tms470)
3966             add_cppflags -I"$sysinclude"
3967             add_ldflags  --sysroot="$sysroot"
3968         ;;
3969     esac
3970 fi
3971
3972 if test "$cpu" = host; then
3973     enabled cross_compile &&
3974         die "--cpu=host makes no sense when cross-compiling."
3975
3976     case "$cc_type" in
3977         gcc|llvm_gcc)
3978             check_native(){
3979                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3980                 sed -n "/cc1.*$1=/{
3981                             s/.*$1=\\([^ ]*\\).*/\\1/
3982                             p
3983                             q
3984                         }" $TMPE
3985             }
3986             cpu=$(check_native -march || check_native -mcpu)
3987         ;;
3988         clang)
3989             check_native(){
3990                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3991                 sed -n "/cc1.*-target-cpu /{
3992                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
3993                             p
3994                             q
3995                         }" $TMPE
3996             }
3997             cpu=$(check_native -march)
3998         ;;
3999     esac
4000
4001     test "${cpu:-host}" = host &&
4002         die "--cpu=host not supported with compiler $cc"
4003 fi
4004
4005 # Deal with common $arch aliases
4006 case "$arch" in
4007     aarch64|arm64)
4008         arch="aarch64"
4009     ;;
4010     arm*|iPad*|iPhone*)
4011         arch="arm"
4012     ;;
4013     mips*|IP*)
4014         case "$arch" in
4015         *el)
4016             add_cppflags -EL
4017             add_ldflags -EL
4018         ;;
4019         *eb)
4020             add_cppflags -EB
4021             add_ldflags -EB
4022         ;;
4023         esac
4024         arch="mips"
4025     ;;
4026     parisc*|hppa*)
4027         arch="parisc"
4028     ;;
4029     "Power Macintosh"|ppc*|powerpc*)
4030         arch="ppc"
4031     ;;
4032     s390|s390x)
4033         arch="s390"
4034     ;;
4035     sh4|sh)
4036         arch="sh4"
4037     ;;
4038     sun4u|sparc*)
4039         arch="sparc"
4040     ;;
4041     tilegx|tile-gx)
4042         arch="tilegx"
4043     ;;
4044     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4045         arch="x86"
4046     ;;
4047 esac
4048
4049 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4050 enable $arch
4051
4052 # Add processor-specific flags
4053 if enabled aarch64; then
4054
4055     case $cpu in
4056         armv*)
4057             cpuflags="-march=$cpu"
4058         ;;
4059         *)
4060             cpuflags="-mcpu=$cpu"
4061         ;;
4062     esac
4063
4064 elif enabled alpha; then
4065
4066     cpuflags="-mcpu=$cpu"
4067
4068 elif enabled arm; then
4069
4070     check_arm_arch() {
4071         check_cpp_condition stddef.h \
4072             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4073             $cpuflags
4074     }
4075
4076     probe_arm_arch() {
4077         if   check_arm_arch 4;        then echo armv4;
4078         elif check_arm_arch 4T;       then echo armv4t;
4079         elif check_arm_arch 5;        then echo armv5;
4080         elif check_arm_arch 5E;       then echo armv5e;
4081         elif check_arm_arch 5T;       then echo armv5t;
4082         elif check_arm_arch 5TE;      then echo armv5te;
4083         elif check_arm_arch 5TEJ;     then echo armv5te;
4084         elif check_arm_arch 6;        then echo armv6;
4085         elif check_arm_arch 6J;       then echo armv6j;
4086         elif check_arm_arch 6K;       then echo armv6k;
4087         elif check_arm_arch 6Z;       then echo armv6z;
4088         elif check_arm_arch 6ZK;      then echo armv6zk;
4089         elif check_arm_arch 6T2;      then echo armv6t2;
4090         elif check_arm_arch 7;        then echo armv7;
4091         elif check_arm_arch 7A  7_A;  then echo armv7-a;
4092         elif check_arm_arch 7S;       then echo armv7-a;
4093         elif check_arm_arch 7R  7_R;  then echo armv7-r;
4094         elif check_arm_arch 7M  7_M;  then echo armv7-m;
4095         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
4096         elif check_arm_arch 8A  8_A;  then echo armv8-a;
4097         fi
4098     }
4099
4100     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4101
4102     case $cpu in
4103         armv*)
4104             cpuflags="-march=$cpu"
4105             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4106         ;;
4107         *)
4108             cpuflags="-mcpu=$cpu"
4109             case $cpu in
4110                 cortex-a*)                               subarch=armv7a  ;;
4111                 cortex-r*)                               subarch=armv7r  ;;
4112                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4113                 arm11*)                                  subarch=armv6   ;;
4114                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4115                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4116                 *)                             subarch=$(probe_arm_arch) ;;
4117             esac
4118         ;;
4119     esac
4120
4121     case "$subarch" in
4122         armv5t*)    enable fast_clz                ;;
4123         armv[6-8]*)
4124             enable fast_clz
4125             disabled fast_unaligned || enable fast_unaligned
4126             ;;
4127     esac
4128
4129 elif enabled avr32; then
4130
4131     case $cpu in
4132         ap7[02]0[0-2])
4133             subarch="avr32_ap"
4134             cpuflags="-mpart=$cpu"
4135         ;;
4136         ap)
4137             subarch="avr32_ap"
4138             cpuflags="-march=$cpu"
4139         ;;
4140         uc3[ab]*)
4141             subarch="avr32_uc"
4142             cpuflags="-mcpu=$cpu"
4143         ;;
4144         uc)
4145             subarch="avr32_uc"
4146             cpuflags="-march=$cpu"
4147         ;;
4148     esac
4149
4150 elif enabled bfin; then
4151
4152     cpuflags="-mcpu=$cpu"
4153
4154 elif enabled mips; then
4155
4156     cpuflags="-march=$cpu"
4157
4158     case $cpu in
4159         24kc)
4160             disable mips32r6
4161             disable mips64r2
4162             disable mips64r6
4163             disable mipsfpu
4164             disable mipsdsp
4165             disable mipsdspr2
4166             disable msa
4167         ;;
4168         24kf*)
4169             disable mips32r6
4170             disable mips64r2
4171             disable mips64r6
4172             disable mipsdsp
4173             disable mipsdspr2
4174             disable msa
4175         ;;
4176         24kec|34kc|1004kc)
4177             disable mips32r6
4178             disable mips64r2
4179             disable mips64r6
4180             disable mipsfpu
4181             disable mipsdspr2
4182             disable msa
4183         ;;
4184         24kef*|34kf*|1004kf*)
4185             disable mips32r6
4186             disable mips64r2
4187             disable mips64r6
4188             disable mipsdspr2
4189             disable msa
4190         ;;
4191         74kc)
4192             disable mips32r6
4193             disable mips64r2
4194             disable mips64r6
4195             disable mipsfpu
4196             disable msa
4197         ;;
4198         74kf)
4199             disable mips32r6
4200             disable mips64r2
4201             disable mips64r6
4202             disable msa
4203         ;;
4204         p5600)
4205             disable mips32r6
4206             disable mips64r2
4207             disable mips64r6
4208             disable mipsdsp
4209             disable mipsdspr2
4210             check_cflags "-mtune=p5600" &&
4211             check_cflags "-mfp64 -msched-weight -mload-store-pairs -funroll-loops" &&
4212             add_asflags "-mfp64"
4213         ;;
4214         i6400)
4215             disable mips32r2
4216             disable mips32r6
4217             disable mips64r2
4218             disable mipsdsp
4219             disable mipsdspr2
4220             check_cflags "-mtune=i6400 -mabi=64" &&
4221             check_cflags "-mfp64 -msched-weight -mload-store-pairs -funroll-loops" &&
4222             check_ldflags "-mabi=64" &&
4223             add_asflags "-mfp64"
4224         ;;
4225         loongson*)
4226             disable mips32r2
4227             disable mips32r6
4228             disable mips64r2
4229             disable mips64r6
4230             disable mipsfpu
4231             disable mipsdsp
4232             disable mipsdspr2
4233             disable msa
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         generic)
4254             disable mips64r6
4255             disable msa
4256         ;;
4257         *)
4258             # Unknown CPU. Disable everything.
4259             warn "unknown CPU. Disabling all MIPS optimizations."
4260             disable mipsfpu
4261             disable mips32r2
4262             disable mips32r6
4263             disable mips64r2
4264             disable mips64r6
4265             disable mipsdsp
4266             disable mipsdspr2
4267             disable msa
4268         ;;
4269     esac
4270
4271 elif enabled ppc; then
4272
4273     disable ldbrx
4274
4275     case $(tolower $cpu) in
4276         601|ppc601|powerpc601)
4277             cpuflags="-mcpu=601"
4278             disable altivec
4279         ;;
4280         603*|ppc603*|powerpc603*)
4281             cpuflags="-mcpu=603"
4282             disable altivec
4283         ;;
4284         604*|ppc604*|powerpc604*)
4285             cpuflags="-mcpu=604"
4286             disable altivec
4287         ;;
4288         g3|75*|ppc75*|powerpc75*)
4289             cpuflags="-mcpu=750"
4290             disable altivec
4291         ;;
4292         g4|745*|ppc745*|powerpc745*)
4293             cpuflags="-mcpu=7450"
4294             disable vsx
4295         ;;
4296         74*|ppc74*|powerpc74*)
4297             cpuflags="-mcpu=7400"
4298             disable vsx
4299         ;;
4300         g5|970|ppc970|powerpc970)
4301             cpuflags="-mcpu=970"
4302             disable vsx
4303         ;;
4304         power[3-6]*)
4305             cpuflags="-mcpu=$cpu"
4306             disable vsx
4307         ;;
4308         power[7-8]*)
4309             cpuflags="-mcpu=$cpu"
4310         ;;
4311         cell)
4312             cpuflags="-mcpu=cell"
4313             enable ldbrx
4314             disable vsx
4315         ;;
4316         e500mc)
4317             cpuflags="-mcpu=e500mc"
4318             disable altivec
4319         ;;
4320         e500v2)
4321             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4322             disable altivec
4323             disable dcbzl
4324         ;;
4325         e500)
4326             cpuflags="-mcpu=8540 -mhard-float"
4327             disable altivec
4328             disable dcbzl
4329         ;;
4330     esac
4331
4332 elif enabled sparc; then
4333
4334     case $cpu in
4335         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4336             cpuflags="-mcpu=$cpu"
4337         ;;
4338         ultrasparc*|niagara[234])
4339             cpuflags="-mcpu=$cpu"
4340         ;;
4341     esac
4342
4343 elif enabled x86; then
4344
4345     case $cpu in
4346         i[345]86|pentium)
4347             cpuflags="-march=$cpu"
4348             disable i686
4349             disable mmx
4350         ;;
4351         # targets that do NOT support nopl and conditional mov (cmov)
4352         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4353             cpuflags="-march=$cpu"
4354             disable i686
4355         ;;
4356         # targets that do support nopl and conditional mov (cmov)
4357         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4358         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
4359             cpuflags="-march=$cpu"
4360             enable i686
4361             enable fast_cmov
4362         ;;
4363         # targets that do support conditional mov but on which it's slow
4364         pentium4|pentium4m|prescott|nocona)
4365             cpuflags="-march=$cpu"
4366             enable i686
4367             disable fast_cmov
4368         ;;
4369     esac
4370
4371 fi
4372
4373 if [ "$cpu" != generic ]; then
4374     add_cflags  $cpuflags
4375     add_asflags $cpuflags
4376     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4377 fi
4378
4379 # compiler sanity check
4380 check_exec <<EOF
4381 int main(void){ return 0; }
4382 EOF
4383 if test "$?" != 0; then
4384     echo "$cc is unable to create an executable file."
4385     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4386         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4387         echo "Only do this if you know what cross compiling means."
4388     fi
4389     die "C compiler test failed."
4390 fi
4391
4392 add_cppflags -D_ISOC99_SOURCE
4393 add_cxxflags -D__STDC_CONSTANT_MACROS
4394 check_cflags -std=c99
4395 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4396 #include <stdlib.h>
4397 EOF
4398 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4399 #include <stdlib.h>
4400 EOF
4401
4402 add_host_cppflags -D_ISOC99_SOURCE
4403 check_host_cflags -std=c99
4404 check_host_cflags -Wall
4405 check_host_cflags -O3
4406
4407 check_64bit(){
4408     arch32=$1
4409     arch64=$2
4410     expr=$3
4411     check_code cc "" "int test[2*($expr) - 1]" &&
4412         subarch=$arch64 || subarch=$arch32
4413 }
4414
4415 case "$arch" in
4416     aarch64|alpha|ia64)
4417         spic=$shared
4418     ;;
4419     mips)
4420         check_64bit mips mips64 '_MIPS_SIM > 1'
4421         spic=$shared
4422     ;;
4423     parisc)
4424         check_64bit parisc parisc64 'sizeof(void *) > 4'
4425         spic=$shared
4426     ;;
4427     ppc)
4428         check_64bit ppc ppc64 'sizeof(void *) > 4'
4429         spic=$shared
4430     ;;
4431     s390)
4432         check_64bit s390 s390x 'sizeof(void *) > 4'
4433         spic=$shared
4434     ;;
4435     sparc)
4436         check_64bit sparc sparc64 'sizeof(void *) > 4'
4437         spic=$shared
4438     ;;
4439     x86)
4440         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4441         # Treat x32 as x64 for now. Note it also needs spic=$shared
4442         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4443             subarch=x86_64
4444         if test "$subarch" = "x86_64"; then
4445             spic=$shared
4446         fi
4447     ;;
4448     ppc)
4449         check_cc <<EOF && subarch="ppc64"
4450         int test[(int)sizeof(char*) - 7];
4451 EOF
4452     ;;
4453 esac
4454
4455 enable $subarch
4456 enabled spic && enable_weak pic
4457
4458 # OS specific
4459 case $target_os in
4460     aix)
4461         SHFLAGS=-shared
4462         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4463         enabled shared && add_ldflags -Wl,-brtl
4464         ;;
4465     android)
4466         disable symver
4467         enable section_data_rel_ro
4468         SLIB_INSTALL_NAME='$(SLIBNAME)'
4469         SLIB_INSTALL_LINKS=
4470         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4471         ;;
4472     haiku)
4473         prefix_default="/boot/common"
4474         network_extralibs="-lnetwork"
4475         host_libs=
4476         ;;
4477     sunos)
4478         SHFLAGS='-shared -Wl,-h,$$(@F)'
4479         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4480         network_extralibs="-lsocket -lnsl"
4481         add_cppflags -D__EXTENSIONS__
4482         # When using suncc to build, the Solaris linker will mark
4483         # an executable with each instruction set encountered by
4484         # the Solaris assembler.  As our libraries contain their own
4485         # guards for processor-specific code, instead suppress
4486         # generation of the HWCAPS ELF section on Solaris x86 only.
4487         enabled_all suncc x86 &&
4488             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4489             add_ldflags -Wl,-M,mapfile
4490         nm_default='nm -P -g'
4491         SLIB_CREATE_DEF_CMD='$(Q)perl $(SRC_PATH)/compat/solaris/make_sunver.pl $$(filter %.ver,$$^) $(OBJS) | grep -v @ > $(SUBDIR)lib$(NAME).ver-sol2'
4492         ;;
4493     netbsd)
4494         disable symver
4495         oss_indev_extralibs="-lossaudio"
4496         oss_outdev_extralibs="-lossaudio"
4497         enabled gcc || check_ldflags -Wl,-zmuldefs
4498         ;;
4499     openbsd|bitrig)
4500         disable symver
4501         SHFLAGS='-shared'
4502         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4503         SLIB_INSTALL_LINKS=
4504         oss_indev_extralibs="-lossaudio"
4505         oss_outdev_extralibs="-lossaudio"
4506         ;;
4507     dragonfly)
4508         disable symver
4509         ;;
4510     freebsd)
4511         ;;
4512     bsd/os)
4513         add_extralibs -lpoll -lgnugetopt
4514         strip="strip -d"
4515         ;;
4516     darwin)
4517         enabled ppc && add_asflags -force_cpusubtype_ALL
4518         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4519         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4520         strip="${strip} -x"
4521         add_ldflags -Wl,-dynamic,-search_paths_first
4522         SLIBSUF=".dylib"
4523         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4524         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4525         objformat="macho"
4526         enabled x86_64 && objformat="macho64"
4527         enabled_any pic shared x86_64 ||
4528             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4529         ;;
4530     msys*)
4531         die "Native MSYS builds are discouraged, please use the MINGW environment.";
4532         ;;
4533     mingw32*|mingw64*)
4534         if test $target_os = "mingw32ce"; then
4535             disable network
4536         else
4537             target_os=mingw32
4538         fi
4539         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4540         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4541         LIBTARGET=i386
4542         if enabled x86_64; then
4543             LIBTARGET="i386:x86-64"
4544         elif enabled arm; then
4545             LIBTARGET=arm-wince
4546         fi
4547         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4548         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4549         shlibdir_default="$bindir_default"
4550         SLIBPREF=""
4551         SLIBSUF=".dll"
4552         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4553         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4554         dlltool="${cross_prefix}dlltool"
4555         if check_cmd lib.exe -list; then
4556             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4557             if enabled x86_64; then
4558                 LIBTARGET=x64
4559             fi
4560         elif check_cmd $dlltool --version; then
4561             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4562         fi
4563         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4564         SLIB_INSTALL_LINKS=
4565         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4566         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4567         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4568         objformat="win32"
4569         ranlib=:
4570         enable dos_paths
4571         check_ldflags -Wl,--nxcompat,--dynamicbase
4572         # Lets work around some stupidity in binutils.
4573         # ld will strip relocations from executables even though we need them
4574         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4575         # however ld then forgets what the entry point should be (oops) so we
4576         # have to manually (re)set it.
4577         if enabled x86_32; then
4578             add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4579         elif enabled x86_64; then
4580             add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4581             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4582             # Set image base >4GB for extra entropy with HEASLR
4583             add_ldexeflags -Wl,--image-base,0x140000000
4584             append SHFLAGS -Wl,--image-base,0x180000000
4585         fi
4586         ;;
4587     win32|win64)
4588         disable symver
4589         if enabled shared; then
4590             # Link to the import library instead of the normal static library
4591             # for shared libs.
4592             LD_LIB='%.lib'
4593             # Cannot build both shared and static libs with MSVC or icl.
4594             disable static
4595         fi
4596         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4597         shlibdir_default="$bindir_default"
4598         SLIBPREF=""
4599         SLIBSUF=".dll"
4600         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4601         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4602         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4603         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4604         SLIB_INSTALL_LINKS=
4605         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4606         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4607         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4608         objformat="win32"
4609         ranlib=:
4610         enable dos_paths
4611         ;;
4612     cygwin*)
4613         target_os=cygwin
4614         shlibdir_default="$bindir_default"
4615         SLIBPREF="cyg"
4616         SLIBSUF=".dll"
4617         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4618         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4619         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4620         SLIB_INSTALL_LINKS=
4621         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4622         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4623         objformat="win32"
4624         enable dos_paths
4625         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4626         ;;
4627     *-dos|freedos|opendos)
4628         network_extralibs="-lsocket"
4629         objformat="coff"
4630         enable dos_paths
4631         add_cppflags -U__STRICT_ANSI__
4632         ;;
4633     linux)
4634         enable dv1394
4635         enable section_data_rel_ro
4636         ;;
4637     irix*)
4638         target_os=irix
4639         ranlib="echo ignoring ranlib"
4640         ;;
4641     os/2*)
4642         strip="lxlite -CS"
4643         ln_s="cp -f"
4644         objformat="aout"
4645         add_cppflags -D_GNU_SOURCE
4646         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4647         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4648         LIBSUF="_s.a"
4649         SLIBPREF=""
4650         SLIBSUF=".dll"
4651         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4652         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4653         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4654             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4655             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4656             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4657             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4658         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4659             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4660         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4661         enable dos_paths
4662         enable_weak os2threads
4663         ;;
4664     gnu/kfreebsd)
4665         add_cppflags -D_BSD_SOURCE
4666         ;;
4667     gnu)
4668         ;;
4669     qnx)
4670         add_cppflags -D_QNX_SOURCE
4671         network_extralibs="-lsocket"
4672         ;;
4673     symbian)
4674         SLIBSUF=".dll"
4675         enable dos_paths
4676         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4677         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4678         add_ldflags -Wl,--target1-abs,--no-undefined \
4679                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4680                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4681         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4682                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4683                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4684         ;;
4685     osf1)
4686         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4687         ;;
4688     minix)
4689         ;;
4690     plan9)
4691         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4692                      -D_REENTRANT_SOURCE        \
4693                      -D_RESEARCH_SOURCE         \
4694                      -DFD_SETSIZE=96            \
4695                      -DHAVE_SOCK_OPTS
4696         add_compat strtod.o strtod=avpriv_strtod
4697         network_extralibs='-lbsd'
4698         exeobjs=compat/plan9/main.o
4699         disable ffserver
4700         cp_f='cp'
4701         ;;
4702     none)
4703         ;;
4704     *)
4705         die "Unknown OS '$target_os'."
4706         ;;
4707 esac
4708
4709 # test if creating links works
4710 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
4711 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
4712 mkdir "$link_dest"
4713 $ln_s "$link_dest" "$link_name"
4714 touch "$link_dest/test_file"
4715 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
4716     # create link to source path
4717     [ -e src ] && rm src
4718     $ln_s "$source_path" src
4719     source_link=src
4720 else
4721     # creating directory links doesn't work
4722     # fall back to using the full source path
4723     source_link="$source_path"
4724 fi
4725 # cleanup
4726 rm -r "$link_dest"
4727 rm -r "$link_name"
4728
4729 # determine libc flavour
4730
4731 probe_libc(){
4732     pfx=$1
4733     pfx_no_=${pfx%_}
4734     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4735     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4736         eval ${pfx}libc_type=uclibc
4737         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4738     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4739         eval ${pfx}libc_type=glibc
4740         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4741     # MinGW headers can be installed on Cygwin, so check for newlib first.
4742     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4743         eval ${pfx}libc_type=newlib
4744         add_${pfx}cppflags -U__STRICT_ANSI__
4745     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4746     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4747         eval ${pfx}libc_type=mingw64
4748         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4749             add_compat msvcrt/snprintf.o
4750             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4751         fi
4752         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4753         eval test \$${pfx_no_}cc_type = "gcc" &&
4754             add_${pfx}cppflags -D__printf__=__gnu_printf__
4755     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4756          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4757         eval ${pfx}libc_type=mingw32
4758         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4759             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4760             die "ERROR: MinGW32 runtime version must be >= 3.15."
4761         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4762         eval test \$${pfx_no_}cc_type = "gcc" &&
4763             add_${pfx}cppflags -D__printf__=__gnu_printf__
4764     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4765         eval ${pfx}libc_type=msvcrt
4766         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4767             if [ "$pfx" = host_ ]; then
4768                 add_host_cppflags -Dsnprintf=_snprintf
4769             else
4770                 add_compat strtod.o strtod=avpriv_strtod
4771                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4772                                              _snprintf=avpriv_snprintf  \
4773                                              vsnprintf=avpriv_vsnprintf
4774             fi
4775         fi
4776         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4777         # 0x601 by default unless something else is set by the user.
4778         # This can easily lead to us detecting functions only present
4779         # in such new versions and producing binaries requiring windows 7.0.
4780         # Therefore explicitly set the default to XP unless the user has
4781         # set something else on the command line.
4782         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4783         # family. For these cases, configure is free to use any functions
4784         # found in the SDK headers by default. (Alternatively, we could force
4785         # _WIN32_WINNT to 0x0602 in that case.)
4786         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4787             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4788 #ifdef WINAPI_FAMILY
4789 #include <winapifamily.h>
4790 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4791 #error not desktop
4792 #endif
4793 #endif
4794 EOF
4795     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4796         eval ${pfx}libc_type=klibc
4797     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4798         eval ${pfx}libc_type=bionic
4799     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4800         eval ${pfx}libc_type=solaris
4801         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4802     fi
4803     check_${pfx}cc <<EOF
4804 #include <time.h>
4805 void *v = localtime_r;
4806 EOF
4807 test "$?" != 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
4808 #include <time.h>
4809 void *v = localtime_r;
4810 EOF
4811
4812 }
4813
4814 probe_libc
4815 test -n "$libc_type" && enable libc_$libc_type
4816 probe_libc host_
4817 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4818
4819 case $libc_type in
4820     bionic)
4821         add_compat strtod.o strtod=avpriv_strtod
4822         ;;
4823 esac
4824
4825 # hacks for compiler/libc/os combinations
4826
4827 if enabled_all tms470 libc_glibc; then
4828     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4829     add_cppflags -D__USER_LABEL_PREFIX__=
4830     add_cppflags -D__builtin_memset=memset
4831     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4832     add_cflags   -pds=48    # incompatible redefinition of macro
4833 fi
4834
4835 if enabled_all ccc libc_glibc; then
4836     add_ldflags -Wl,-z,now  # calls to libots crash without this
4837 fi
4838
4839 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4840     add_cppflags '-I\$(SRC_PATH)/compat/float'
4841
4842 esc(){
4843     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4844 }
4845
4846 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4847
4848 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4849
4850 set_default libdir
4851 : ${shlibdir_default:="$libdir"}
4852 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
4853
4854 set_default $PATHS_LIST
4855 set_default nm
4856
4857 # we need to build at least one lib type
4858 if ! enabled_any static shared; then
4859     cat <<EOF
4860 At least one library type must be built.
4861 Specify --enable-static to build the static libraries or --enable-shared to
4862 build the shared libraries as well. To only build the shared libraries specify
4863 --disable-static in addition to --enable-shared.
4864 EOF
4865     exit 1;
4866 fi
4867
4868 die_license_disabled() {
4869     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4870 }
4871
4872 die_license_disabled_gpl() {
4873     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4874 }
4875
4876 die_license_disabled gpl frei0r
4877 die_license_disabled gpl libcdio
4878 die_license_disabled gpl librubberband
4879 die_license_disabled gpl libsmbclient
4880 die_license_disabled gpl libutvideo
4881 die_license_disabled gpl libvidstab
4882 die_license_disabled gpl libx264
4883 die_license_disabled gpl libx265
4884 die_license_disabled gpl libxavs
4885 die_license_disabled gpl libxvid
4886 die_license_disabled gpl x11grab
4887
4888 die_license_disabled nonfree cuda
4889 die_license_disabled nonfree libfaac
4890 die_license_disabled nonfree nvenc
4891 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4892 enabled gpl && die_license_disabled_gpl nonfree openssl
4893
4894 die_license_disabled version3 gmp
4895 die_license_disabled version3 libopencore_amrnb
4896 die_license_disabled version3 libopencore_amrwb
4897 die_license_disabled version3 libsmbclient
4898 die_license_disabled version3 libvo_amrwbenc
4899
4900 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4901
4902 disabled optimizations || check_cflags -fomit-frame-pointer
4903
4904 enable_weak_pic() {
4905     disabled pic && return
4906     enable pic
4907     add_cppflags -DPIC
4908     case "$target_os" in
4909     mingw*|cygwin*)
4910         ;;
4911     *)
4912         add_cflags -fPIC
4913         ;;
4914     esac
4915     add_asflags  -fPIC
4916 }
4917
4918 enabled pic && enable_weak_pic
4919
4920 check_cc <<EOF || die "Symbol mangling check failed."
4921 int ff_extern;
4922 EOF
4923 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4924 extern_prefix=${sym%%ff_extern*}
4925
4926 check_cc <<EOF && enable_weak inline_asm
4927 void foo(void) { __asm__ volatile ("" ::); }
4928 EOF
4929
4930 _restrict=
4931 for restrict_keyword in restrict __restrict__ __restrict; do
4932     check_cc <<EOF && _restrict=$restrict_keyword && break
4933 void foo(char * $restrict_keyword p);
4934 EOF
4935 done
4936
4937 check_cc <<EOF && enable pragma_deprecated
4938 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4939 EOF
4940
4941 check_cc <<EOF && enable attribute_packed
4942 struct { int x; } __attribute__((packed)) x;
4943 EOF
4944
4945 check_cc <<EOF && enable attribute_may_alias
4946 union { int x; } __attribute__((may_alias)) x;
4947 EOF
4948
4949 check_cc <<EOF || die "endian test failed"
4950 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4951 EOF
4952 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4953
4954 if ! enabled ppc64 || enabled bigendian; then
4955     disable vsx
4956 fi
4957
4958 check_gas() {
4959     log "check_gas using '$as' as AS"
4960     # :vararg is used on aarch64, arm and ppc altivec
4961     check_as <<EOF || return 1
4962 .macro m n, y:vararg=0
4963 \n: .int \y
4964 .endm
4965 m x
4966 EOF
4967     # .altmacro is only used in arm asm
4968     ! enabled arm || check_as <<EOF || return 1
4969 .altmacro
4970 EOF
4971     enable gnu_as
4972     return 0
4973 }
4974
4975 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4976     nogas=:
4977     enabled_any arm aarch64 && nogas=die
4978     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
4979     as_noop=-v
4980
4981     case $as_type in
4982         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4983         gcc)  gaspp_as_type=gas ;;
4984         *)    gaspp_as_type=$as_type ;;
4985     esac
4986
4987     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4988
4989     test "${as#*gas-preprocessor.pl}" != "$as" ||
4990     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
4991         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
4992
4993     if ! check_gas ; then
4994         as=${gas:=$as}
4995         check_gas || \
4996             $nogas "GNU assembler not found, install/update gas-preprocessor"
4997     fi
4998
4999     check_as <<EOF && enable as_func
5000 .func test
5001 .endfunc
5002 EOF
5003 fi
5004
5005 check_inline_asm inline_asm_labels '"1:\n"'
5006
5007 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5008
5009 if enabled aarch64; then
5010     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5011     # internal assembler in clang 3.3 does not support this instruction
5012     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5013     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5014
5015     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5016
5017 elif enabled alpha; then
5018
5019     check_cflags -mieee
5020
5021 elif enabled arm; then
5022
5023     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5024
5025     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5026 float func(float a, float b){ return a+b; }
5027 EOF
5028
5029     enabled thumb && check_cflags -mthumb || check_cflags -marm
5030
5031     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5032         enable vfp_args
5033     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5034         enable vfp_args
5035     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5036         case "${cross_prefix:-$cc}" in
5037             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5038             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5039 __asm__ (".eabi_attribute 28, 1");
5040 int main(void) { return 0; }
5041 EOF
5042         esac
5043         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5044     fi
5045
5046     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5047     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5048     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5049     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5050     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5051     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5052     enabled setend  && check_insn setend  'setend be'
5053
5054     [ $target_os = linux ] || [ $target_os = android ] ||
5055         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5056             $ARCH_EXT_LIST_ARM
5057
5058     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5059
5060     check_as <<EOF && enable as_dn_directive
5061 ra .dn d0.i16
5062 .unreq ra
5063 EOF
5064
5065     # llvm's integrated assembler supports .object_arch from llvm 3.5
5066     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5067 .object_arch armv4
5068 EOF
5069
5070     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5071
5072 elif enabled mips; then
5073
5074     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5075     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5076     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5077
5078     # Enable minimum ISA based on selected options
5079     if enabled mips64 && (enabled mipsdsp || enabled mipsdspr2); then
5080         add_cflags "-mips64r2"
5081         add_asflags "-mips64r2"
5082     elif enabled mips64 && enabled mipsfpu && disabled loongson2 && disabled loongson3; then
5083         add_cflags "-mips64"
5084         add_asflags "-mips64"
5085     elif enabled mipsdsp || enabled mipsdspr2; then
5086         add_cflags "-mips32r2 -mfp32"
5087         add_asflags "-mips32r2 -mfp32"
5088     fi
5089
5090     enabled mipsdsp && add_cflags "-mdsp" && add_asflags "-mdsp" &&
5091      check_inline_asm mipsdsp '"addu.qb $t0, $t1, $t2"'
5092     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
5093      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
5094     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
5095      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
5096     enabled msa       && check_cflags "-mmsa" && check_ldflags "-mmsa" &&
5097      check_inline_asm msa       '"addvi.b $w0, $w1, 1"'
5098
5099     enabled msa && add_asflags "-mmsa"
5100
5101 elif enabled parisc; then
5102
5103     if enabled gcc; then
5104         case $($cc -dumpversion) in
5105             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5106         esac
5107     fi
5108
5109 elif enabled ppc; then
5110
5111     enable local_aligned_8 local_aligned_16 local_aligned_32
5112
5113     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5114     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5115     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5116     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5117
5118     # AltiVec flags: The FSF version of GCC differs from the Apple version
5119     if enabled altivec; then
5120         check_cflags -maltivec -mabi=altivec &&
5121         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5122         check_cflags -faltivec
5123
5124         # check if our compiler supports Motorola AltiVec C API
5125         check_cc <<EOF || disable altivec
5126 $inc_altivec_h
5127 int main(void) {
5128     vector signed int v1 = (vector signed int) { 0 };
5129     vector signed int v2 = (vector signed int) { 1 };
5130     v1 = vec_add(v1, v2);
5131     return 0;
5132 }
5133 EOF
5134
5135         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5136     fi
5137
5138     if enabled vsx; then
5139         check_cflags -mvsx &&
5140         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5141     fi
5142
5143     if enabled power8; then
5144         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5145     fi
5146
5147 elif enabled x86; then
5148
5149     check_builtin rdtsc    intrin.h   "__rdtsc()"
5150     check_builtin mm_empty mmintrin.h "_mm_empty()"
5151
5152     enable local_aligned_8 local_aligned_16 local_aligned_32
5153
5154     # check whether EBP is available on x86
5155     # As 'i' is stored on the stack, this program will crash
5156     # if the base pointer is used to access it because the
5157     # base pointer is cleared in the inline assembly code.
5158     check_exec_crash <<EOF && enable ebp_available
5159 volatile int i=0;
5160 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5161 return i;
5162 EOF
5163
5164     # check whether EBX is available on x86
5165     check_inline_asm ebx_available '""::"b"(0)' &&
5166         check_inline_asm ebx_available '"":::"%ebx"'
5167
5168     # check whether xmm clobbers are supported
5169     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5170
5171     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5172         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5173
5174     # check whether binutils is new enough to compile SSSE3/MMXEXT
5175     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5176     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5177
5178     if ! disabled_any asm mmx yasm; then
5179         if check_cmd $yasmexe --version; then
5180             enabled x86_64 && yasm_extra="-m amd64"
5181             yasm_debug="-g dwarf2"
5182         elif check_cmd nasm -v; then
5183             yasmexe=nasm
5184             yasm_debug="-g -F dwarf"
5185             if enabled x86_64; then
5186                 case "$objformat" in
5187                     elf)   objformat=elf64 ;;
5188                     win32) objformat=win64 ;;
5189                 esac
5190             fi
5191         fi
5192
5193         YASMFLAGS="-f $objformat $yasm_extra"
5194         enabled pic               && append YASMFLAGS "-DPIC"
5195         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5196         case "$objformat" in
5197             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5198         esac
5199
5200         check_yasm "movbe ecx, [5]" && enable yasm ||
5201             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5202         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5203         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5204         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5205         check_yasm "CPU amdnop" || disable cpunop
5206     fi
5207
5208     case "$cpu" in
5209         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5210             disable fast_clz
5211         ;;
5212     esac
5213
5214 fi
5215
5216 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5217
5218 check_ldflags -Wl,--as-needed
5219 check_ldflags -Wl,-z,noexecstack
5220
5221 if check_func dlopen; then
5222     ldl=
5223 elif check_func dlopen -ldl; then
5224     ldl=-ldl
5225 fi
5226
5227 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5228 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5229 frei0r_filter_extralibs='$ldl'
5230 frei0r_src_filter_extralibs='$ldl'
5231 ladspa_filter_extralibs='$ldl'
5232 nvenc_encoder_extralibs='$ldl'
5233
5234 if ! disabled network; then
5235     check_func getaddrinfo $network_extralibs
5236     check_func inet_aton $network_extralibs
5237
5238     check_type netdb.h "struct addrinfo"
5239     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5240     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5241     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5242     check_type poll.h "struct pollfd"
5243     check_type netinet/sctp.h "struct sctp_event_subscribe"
5244     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5245     check_type netinet/in.h "struct sockaddr_in6"
5246     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5247     check_type "sys/types.h sys/socket.h" socklen_t
5248
5249     # Prefer arpa/inet.h over winsock2
5250     if check_header arpa/inet.h ; then
5251         check_func closesocket
5252     elif check_header winsock2.h ; then
5253         check_func_headers winsock2.h closesocket -lws2 &&
5254             network_extralibs="-lws2" ||
5255         { check_func_headers winsock2.h closesocket -lws2_32 &&
5256             network_extralibs="-lws2_32"; } || disable winsock2_h network
5257         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5258
5259         check_type ws2tcpip.h socklen_t
5260         check_type ws2tcpip.h "struct addrinfo"
5261         check_type ws2tcpip.h "struct group_source_req"
5262         check_type ws2tcpip.h "struct ip_mreq_source"
5263         check_type ws2tcpip.h "struct ipv6_mreq"
5264         check_type winsock2.h "struct pollfd"
5265         check_struct winsock2.h "struct sockaddr" sa_len
5266         check_type ws2tcpip.h "struct sockaddr_in6"
5267         check_type ws2tcpip.h "struct sockaddr_storage"
5268     else
5269         disable network
5270     fi
5271 fi
5272
5273 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5274 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
5275 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5276 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5277 check_builtin sarestart signal.h "SA_RESTART"
5278 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5279 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5280 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5281 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5282
5283 case "$custom_allocator" in
5284     jemalloc)
5285         # jemalloc by default does not use a prefix
5286         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5287     ;;
5288     tcmalloc)
5289         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5290         malloc_prefix=tc_
5291     ;;
5292 esac
5293
5294 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5295 check_func  ${malloc_prefix}memalign            && enable memalign
5296 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5297
5298 check_func  access
5299 check_func  arc4random
5300 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5301 check_func  fcntl
5302 check_func  fork
5303 check_func  gethrtime
5304 check_func  getopt
5305 check_func  getrusage
5306 check_func  gettimeofday
5307 check_func  isatty
5308 check_func  mach_absolute_time
5309 check_func  mkstemp
5310 check_func  mmap
5311 check_func  mprotect
5312 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5313 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5314 check_func  sched_getaffinity
5315 check_func  setrlimit
5316 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5317 check_func  strerror_r
5318 check_func  sysconf
5319 check_func  sysctl
5320 check_func  usleep
5321
5322 check_func_headers conio.h kbhit
5323 check_func_headers io.h setmode
5324 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5325 check_func_headers stdlib.h getenv
5326 check_func_headers sys/stat.h lstat
5327
5328 check_func_headers windows.h CoTaskMemFree -lole32
5329 check_func_headers windows.h GetProcessAffinityMask
5330 check_func_headers windows.h GetProcessTimes
5331 check_func_headers windows.h GetSystemTimeAsFileTime
5332 check_func_headers windows.h MapViewOfFile
5333 check_func_headers windows.h PeekNamedPipe
5334 check_func_headers windows.h SetConsoleTextAttribute
5335 check_func_headers windows.h SetConsoleCtrlHandler
5336 check_func_headers windows.h Sleep
5337 check_func_headers windows.h VirtualAlloc
5338 check_struct windows.h "CONDITION_VARIABLE" Ptr
5339 check_func_headers glob.h glob
5340 enabled xlib &&
5341     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5342
5343 check_header dispatch/dispatch.h
5344 check_header direct.h
5345 check_header dirent.h
5346 check_header dlfcn.h
5347 check_header d3d11.h
5348 check_header dxva.h
5349 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5350 check_header io.h
5351 check_header libcrystalhd/libcrystalhd_if.h
5352 check_header mach/mach_time.h
5353 check_header malloc.h
5354 check_header net/udplite.h
5355 check_header poll.h
5356 check_header sys/mman.h
5357 check_header sys/param.h
5358 check_header sys/resource.h
5359 check_header sys/select.h
5360 check_header sys/time.h
5361 check_header sys/un.h
5362 check_header termios.h
5363 check_header unistd.h
5364 check_header valgrind/valgrind.h
5365 check_header vdpau/vdpau.h
5366 check_header vdpau/vdpau_x11.h
5367 check_header VideoDecodeAcceleration/VDADecoder.h
5368 check_header VideoToolbox/VideoToolbox.h
5369 check_header windows.h
5370 check_header X11/extensions/XvMClib.h
5371 check_header asm/types.h
5372
5373 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
5374 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
5375 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
5376 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5377
5378 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5379
5380 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5381 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5382 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5383 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5384 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5385
5386 check_type "va/va.h" "VAPictureParameterBufferHEVC"
5387 check_type "va/va.h" "VADecPictureParameterBufferVP9"
5388
5389 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5390
5391 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5392
5393 if ! disabled w32threads && ! enabled pthreads; then
5394     check_func_headers "windows.h process.h" _beginthreadex &&
5395         enable w32threads || disable w32threads
5396     if ! enabled w32threads && enabled winrt; then
5397         check_func_headers "windows.h" CreateThread &&
5398             enable w32threads || disable w32threads
5399     fi
5400 fi
5401
5402 # check for some common methods of building with pthread support
5403 # do this before the optional library checks as some of them require pthreads
5404 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5405     enable pthreads
5406     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5407         add_cflags -pthread
5408         add_extralibs -pthread
5409     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5410         add_cflags -pthreads
5411         add_extralibs -pthreads
5412     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5413         add_cflags -ldl -pthread
5414         add_extralibs -ldl -pthread
5415     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5416         add_extralibs -lpthreadGC2
5417     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5418         :
5419     elif ! check_func pthread_join && ! check_func pthread_create; then
5420         disable pthreads
5421     fi
5422     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5423 fi
5424
5425
5426 if enabled pthreads; then
5427   check_func pthread_cancel
5428 fi
5429
5430 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
5431 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
5432 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
5433
5434 check_lib math.h sin -lm && LIBM="-lm"
5435 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5436
5437 atan2f_args=2
5438 copysign_args=2
5439 hypot_args=2
5440 ldexpf_args=2
5441 powf_args=2
5442
5443 for func in $MATH_FUNCS; do
5444     eval check_mathfunc $func \${${func}_args:-1}
5445 done
5446
5447 for func in $COMPLEX_FUNCS; do
5448     eval check_complexfunc $func \${${func}_args:-1}
5449 done
5450
5451 # these are off by default, so fail if requested and not available
5452 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5453 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5454                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5455 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
5456                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
5457                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
5458 enabled cuda              && check_lib cuda.h cuInit -lcuda
5459 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5460 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
5461 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5462 enabled gmp               && require2 gmp gmp.h mpz_export -lgmp
5463 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5464 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5465 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5466 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5467 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5468 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5469 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5470                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5471                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5472 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5473 enabled libdcadec         && require_pkg_config "dcadec >= 0.1.0" libdcadec/dca_context.h dcadec_context_create
5474 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
5475 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5476                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5477                                  warn "using libfdk without pkg-config"; } }
5478 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"
5479 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5480 enabled fontconfig        && enable libfontconfig
5481 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5482 enabled libfreetype       && require_libfreetype
5483 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5484 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5485 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5486                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5487                                done || die "ERROR: libgsm not found"; }
5488 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5489 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5490 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5491 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5492 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5493 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5494 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5495 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5496 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5497                                require_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5498                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5499 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5500 enabled libopenjpeg       && { check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC ||
5501                                check_lib openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC ||
5502                                check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5503                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
5504                                die "ERROR: libopenjpeg not found"; }
5505 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5506 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5507 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5508 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5509 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5510 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5511 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5512                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5513 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5514 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5515 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5516 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5517 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5518 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5519 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5520                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5521                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5522 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
5523 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5524 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5525 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5526 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5527
5528 enabled libvpx            && {
5529     enabled libvpx_vp8_decoder && {
5530         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5531             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5532                 die "ERROR: libvpx decoder version must be >=0.9.1";
5533     }
5534     enabled libvpx_vp8_encoder && {
5535         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5536             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5537                 die "ERROR: libvpx encoder version must be >=0.9.7";
5538     }
5539     enabled libvpx_vp9_decoder && {
5540         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5541             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5542                 disable libvpx_vp9_decoder;
5543     }
5544     enabled libvpx_vp9_encoder && {
5545         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5546             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5547                 disable libvpx_vp9_encoder;
5548     }
5549     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5550         die "libvpx enabled but no supported decoders found"
5551     fi
5552 }
5553
5554 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5555 enabled libwebp           && {
5556     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5557     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5558 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5559                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5560                                  warn "using libx264 without pkg-config"; } } &&
5561                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5562                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5563                              { check_cpp_condition x264.h "X264_MPEG2" &&
5564                                enable libx262; }
5565 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5566                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5567                                die "ERROR: libx265 version must be >= 68."; }
5568 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5569 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5570 enabled libzimg           && require_pkg_config zimg zimg.h zimg_get_api_version
5571 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5572 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5573                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5574                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5575 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5576                                 { ! enabled cross_compile && {
5577                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5578                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5579                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5580                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5581                                die "ERROR: mmal not found"; }
5582 enabled mmal &&
5583     (check_code cc interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS" ||
5584      die "ERROR: mmal firmware headers too old")
5585
5586 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5587 enabled nvenc             && { check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."; } &&
5588                              { check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 5" ||
5589                                die "ERROR: NVENC API version 4 or older is not supported"; } &&
5590                              { [ $target_os != cygwin ] || die "ERROR: NVENC is not supported on Cygwin currently."; }
5591 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5592                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5593                                die "ERROR: openal not found"; } &&
5594                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5595                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5596 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5597                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5598                                die "ERROR: opencl not found"; } &&
5599                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5600                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5601                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5602 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5603                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5604                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5605                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5606                                die "ERROR: opengl not found."
5607                              }
5608 enabled openssl           && { use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5609                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5610                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5611                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5612                                die "ERROR: openssl not found"; }
5613 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5614
5615 # libdc1394 check
5616 if enabled libdc1394; then
5617     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5618         enable libdc1394_2; } ||
5619     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5620         enable libdc1394_1; } ||
5621     die "ERROR: No version of libdc1394 found "
5622 fi
5623
5624 if enabled gcrypt; then
5625     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5626     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5627         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5628         gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
5629         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
5630             die "ERROR: gcrypt not found"
5631         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
5632     else
5633         require2 gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5634     fi
5635 fi
5636
5637 if ! disabled sdl; then
5638     SDL_CONFIG="${cross_prefix}sdl-config"
5639     if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
5640         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5641         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5642         enable sdl
5643     else
5644         if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
5645             sdl_cflags=$("${SDL_CONFIG}" --cflags)
5646             sdl_libs=$("${SDL_CONFIG}" --libs)
5647             check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
5648             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
5649             check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
5650             enable sdl
5651         elif enabled sdl ; then
5652             die "ERROR: SDL not found"
5653         else
5654             disable sdl
5655         fi
5656     fi
5657     if test $target_os = "mingw32"; then
5658         sdl_libs="$sdl_libs -mconsole"
5659     fi
5660 fi
5661 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
5662
5663 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5664     check_lib2 "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5665     enable securetransport; }
5666
5667 disabled schannel || { check_func_headers "windows.h Security.h" InitializeSecurityContext -DSECURITY_WIN32 -lSecur32 &&
5668                        enable schannel && add_extralibs -lSecur32; }
5669
5670 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5671 enabled makeinfo \
5672     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5673     && enable makeinfo_html || disable makeinfo_html
5674 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5675 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5676 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5677 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5678
5679 check_header linux/fb.h
5680 check_header linux/videodev.h
5681 check_header linux/videodev2.h
5682 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5683
5684 check_header sys/videoio.h
5685 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5686
5687 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5688 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5689 # w32api 3.12 had it defined wrong
5690 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5691
5692 check_type "dshow.h" IBaseFilter
5693
5694 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5695 { check_header dev/bktr/ioctl_meteor.h &&
5696   check_header dev/bktr/ioctl_bt848.h; } ||
5697 { check_header machine/ioctl_meteor.h &&
5698   check_header machine/ioctl_bt848.h; } ||
5699 { check_header dev/video/meteor/ioctl_meteor.h &&
5700   check_header dev/video/bktr/ioctl_bt848.h; } ||
5701 check_header dev/ic/bt8xx.h
5702
5703 check_header sndio.h
5704 if check_struct sys/soundcard.h audio_buf_info bytes; then
5705     enable_safe sys/soundcard.h
5706 else
5707     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5708     #include <sys/soundcard.h>
5709     audio_buf_info abc;
5710 EOF
5711 fi
5712 check_header soundcard.h
5713
5714 enabled_any alsa_indev alsa_outdev &&
5715     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5716
5717 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
5718     check_func jack_port_get_latency_range -ljack
5719
5720 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
5721
5722 if enabled libcdio; then
5723     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5724     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5725     die "ERROR: No usable libcdio/cdparanoia found"
5726 fi
5727
5728 enabled xlib &&
5729     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
5730
5731 if ! disabled libxcb; then
5732     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
5733         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
5734     } && disable x11grab && enable libxcb
5735
5736 if enabled libxcb; then
5737     disabled libxcb_shm || {
5738         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
5739             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
5740         } && check_header sys/shm.h && enable libxcb_shm; }
5741
5742     disabled libxcb_xfixes || {
5743         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
5744             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
5745         } && enable libxcb_xfixes; }
5746
5747     disabled libxcb_shape || {
5748         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
5749             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
5750         } && enable libxcb_shape; }
5751
5752     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
5753     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
5754 fi
5755 fi
5756
5757 if enabled x11grab; then
5758     enabled xlib || die "ERROR: Xlib not found"
5759     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
5760     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
5761 fi
5762
5763 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
5764
5765 enabled dxva2api_h &&
5766     check_cc <<EOF && enable dxva2api_cobj
5767 #define _WIN32_WINNT 0x0600
5768 #define COBJMACROS
5769 #include <windows.h>
5770 #include <d3d9.h>
5771 #include <dxva2api.h>
5772 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
5773 EOF
5774
5775 enabled vaapi &&
5776     check_lib va/va.h vaInitialize -lva ||
5777     disable vaapi
5778
5779 enabled vaapi && enabled xlib &&
5780     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
5781     enable vaapi_x11
5782
5783 enabled vdpau &&
5784     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
5785     disable vdpau
5786
5787 enabled vdpau && enabled xlib &&
5788     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
5789     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
5790     enable vdpau_x11
5791
5792 # Funny iconv installations are not unusual, so check it after all flags have been set
5793 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
5794
5795 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
5796
5797 # add some useful compiler flags if supported
5798 check_cflags -Wdeclaration-after-statement
5799 check_cflags -Wall
5800 check_cflags -Wdisabled-optimization
5801 check_cflags -Wpointer-arith
5802 check_cflags -Wredundant-decls
5803 check_cflags -Wwrite-strings
5804 check_cflags -Wtype-limits
5805 check_cflags -Wundef
5806 check_cflags -Wmissing-prototypes
5807 check_cflags -Wno-pointer-to-int-cast
5808 check_cflags -Wstrict-prototypes
5809 check_cflags -Wempty-body
5810 enabled extra_warnings && check_cflags -Winline
5811 enabled extra_warnings && check_cflags -Wcast-qual
5812
5813 check_disable_warning(){
5814     warning_flag=-W${1#-Wno-}
5815     test_cflags $warning_flag && add_cflags $1
5816 }
5817
5818 check_disable_warning -Wno-parentheses
5819 check_disable_warning -Wno-switch
5820 check_disable_warning -Wno-format-zero-length
5821 check_disable_warning -Wno-pointer-sign
5822 check_disable_warning -Wno-unused-const-variable
5823
5824 # add some linker flags
5825 check_ldflags -Wl,--warn-common
5826 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
5827 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
5828 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
5829 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
5830
5831 # add some strip flags
5832 # -wN '..@*' is more selective than -x, but not available everywhere.
5833 check_stripflags -wN \'..@*\' || check_stripflags -x
5834
5835 enabled neon_clobber_test &&
5836     check_ldflags -Wl,--wrap,avcodec_open2              \
5837                   -Wl,--wrap,avcodec_decode_audio4      \
5838                   -Wl,--wrap,avcodec_decode_video2      \
5839                   -Wl,--wrap,avcodec_decode_subtitle2   \
5840                   -Wl,--wrap,avcodec_encode_audio2      \
5841                   -Wl,--wrap,avcodec_encode_video2      \
5842                   -Wl,--wrap,avcodec_encode_subtitle    \
5843                   -Wl,--wrap,swr_convert                \
5844                   -Wl,--wrap,avresample_convert ||
5845     disable neon_clobber_test
5846
5847 enabled xmm_clobber_test &&
5848     check_ldflags -Wl,--wrap,avcodec_open2              \
5849                   -Wl,--wrap,avcodec_decode_audio4      \
5850                   -Wl,--wrap,avcodec_decode_video2      \
5851                   -Wl,--wrap,avcodec_decode_subtitle2   \
5852                   -Wl,--wrap,avcodec_encode_audio2      \
5853                   -Wl,--wrap,avcodec_encode_video2      \
5854                   -Wl,--wrap,avcodec_encode_subtitle    \
5855                   -Wl,--wrap,swr_convert                \
5856                   -Wl,--wrap,avresample_convert         \
5857                   -Wl,--wrap,sws_scale ||
5858     disable xmm_clobber_test
5859
5860 echo "X { local: *; };" > $TMPV
5861 if test_ldflags -Wl,--version-script,$TMPV; then
5862     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
5863 elif test_ldflags -Wl,-M,$TMPV; then
5864     append SHFLAGS '-Wl,-M,\$(SUBDIR)lib\$(NAME).ver-sol2'
5865 fi
5866
5867 check_cc <<EOF && enable symver_asm_label
5868 void ff_foo(void) __asm__ ("av_foo@VERSION");
5869 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
5870 EOF
5871     check_cc <<EOF && enable symver_gnu_asm
5872 __asm__(".symver ff_foo,av_foo@VERSION");
5873 void ff_foo(void) {}
5874 EOF
5875
5876 if [ -z "$optflags" ]; then
5877     if enabled small; then
5878         optflags=$cflags_size
5879     elif enabled optimizations; then
5880         optflags=$cflags_speed
5881     else
5882         optflags=$cflags_noopt
5883     fi
5884 fi
5885
5886 check_optflags(){
5887     check_cflags "$@"
5888     enabled lto && check_ldflags "$@"
5889 }
5890
5891
5892 if enabled lto; then
5893     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
5894     check_cflags  -flto
5895     check_ldflags -flto $cpuflags
5896     disable inline_asm_direct_symbol_refs
5897 fi
5898
5899 check_optflags $optflags
5900 check_optflags -fno-math-errno
5901 check_optflags -fno-signed-zeros
5902
5903 enabled ftrapv && check_cflags -ftrapv
5904
5905 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
5906 int x;
5907 EOF
5908
5909
5910 if enabled icc; then
5911     # Just warnings, no remarks
5912     check_cflags -w1
5913     # -wd: Disable following warnings
5914     # 144, 167, 556: -Wno-pointer-sign
5915     # 188: enumerated type mixed with another type
5916     # 1292: attribute "foo" ignored
5917     # 1419: external declaration in primary source file
5918     # 10006: ignoring unknown option -fno-signed-zeros
5919     # 10148: ignoring unknown option -Wno-parentheses
5920     # 10156: ignoring option '-W'; no argument required
5921     # 13200: No EMMS instruction before call to function
5922     # 13203: No EMMS instruction before return from function
5923     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
5924     # 11030: Warning unknown option --as-needed
5925     # 10156: ignoring option '-export'; no argument required
5926     check_ldflags -wd10156,11030
5927     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
5928     enable ebp_available
5929     # The test above does not test linking
5930     enabled lto && disable symver_asm_label
5931     if enabled x86_32; then
5932         icc_version=$($cc -dumpversion)
5933         test ${icc_version%%.*} -ge 11 &&
5934             check_cflags -falign-stack=maintain-16-byte ||
5935             disable aligned_stack
5936     fi
5937 elif enabled ccc; then
5938     # disable some annoying warnings
5939     add_cflags -msg_disable bitnotint
5940     add_cflags -msg_disable mixfuncvoid
5941     add_cflags -msg_disable nonstandcast
5942     add_cflags -msg_disable unsupieee
5943 elif enabled gcc; then
5944     case $gcc_basever in
5945         4.9*) enabled x86 || check_optflags -fno-tree-vectorize ;;
5946         4.*)                 check_optflags -fno-tree-vectorize ;;
5947         *)    enabled x86 || check_optflags -fno-tree-vectorize ;;
5948     esac
5949     check_cflags -Werror=format-security
5950     check_cflags -Werror=implicit-function-declaration
5951     check_cflags -Werror=missing-prototypes
5952     check_cflags -Werror=return-type
5953     check_cflags -Werror=vla
5954     check_cflags -Wformat
5955     check_cflags -fdiagnostics-color=auto
5956     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
5957 elif enabled llvm_gcc; then
5958     check_cflags -mllvm -stack-alignment=16
5959 elif enabled clang; then
5960     check_cflags -mllvm -stack-alignment=16
5961     check_cflags -Qunused-arguments
5962     check_cflags -Werror=implicit-function-declaration
5963     check_cflags -Werror=missing-prototypes
5964     check_cflags -Werror=return-type
5965 elif enabled cparser; then
5966     add_cflags -Wno-missing-variable-declarations
5967     add_cflags -Wno-empty-statement
5968 elif enabled armcc; then
5969     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
5970     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
5971     # 2523: use of inline assembly is deprecated
5972     add_cflags -W${armcc_opt},--diag_suppress=2523
5973     add_cflags -W${armcc_opt},--diag_suppress=1207
5974     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
5975     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
5976     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
5977     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
5978 elif enabled tms470; then
5979     add_cflags -pds=824 -pds=837
5980     disable inline_asm
5981 elif enabled pathscale; then
5982     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
5983 elif enabled_any msvc icl; then
5984     enabled x86_32 && disable aligned_stack
5985     enabled_all x86_32 debug && add_cflags -Oy-
5986     enabled debug && add_ldflags -debug
5987     enable pragma_deprecated
5988     if enabled icl; then
5989         # -Qansi-alias is basically -fstrict-aliasing, but does not work
5990         # (correctly) on icl 13.x.
5991         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
5992             add_cflags -Qansi-alias
5993         # Some inline asm is not compilable in debug
5994         if enabled debug; then
5995             disable ebp_available
5996             disable ebx_available
5997         fi
5998     fi
5999     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6000     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6001     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6002     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6003     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6004     # MSVC 2013 and newer can handle it fine.
6005     # If this declspec fails, force including stdlib.h before the restrict redefinition
6006     # happens in config.h.
6007     if [ $_restrict != restrict ]; then
6008         check_cc <<EOF || add_cflags -FIstdlib.h
6009 __declspec($_restrict) void* foo(int);
6010 EOF
6011     fi
6012     check_func strtoll || add_cflags -Dstrtoll=_strtoi64
6013 fi
6014
6015 for pfx in "" host_; do
6016     varname=${pfx%_}cc_type
6017     eval "type=\$$varname"
6018     if [ $type = "msvc" ]; then
6019         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6020 static inline int foo(int a) { return a; }
6021 EOF
6022     fi
6023 done
6024
6025 case $as_type in
6026     clang)
6027         add_asflags -Qunused-arguments
6028     ;;
6029 esac
6030
6031 case $ld_type in
6032     clang)
6033         check_ldflags -Qunused-arguments
6034     ;;
6035 esac
6036
6037 case $target_os in
6038     osf1)
6039         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6040     ;;
6041     plan9)
6042         add_cppflags -Dmain=plan9_main
6043     ;;
6044 esac
6045
6046 enable frame_thread_encoder
6047
6048 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6049
6050 check_deps $CONFIG_LIST       \
6051            $CONFIG_EXTRA      \
6052            $HAVE_LIST         \
6053            $ALL_COMPONENTS    \
6054
6055 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"
6056
6057
6058 if test $target_os = "haiku"; then
6059     disable memalign
6060     disable posix_memalign
6061 fi
6062
6063 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
6064     prepend ffmpeg_libs $($ldflags_filter "-lole32" "-luser32") &&
6065     enable dxva2_lib
6066
6067 ! enabled_any memalign posix_memalign aligned_malloc &&
6068     enabled simd_align_16 && enable memalign_hack
6069
6070 # add_dep lib dep
6071 # -> enable ${lib}_deps_${dep}
6072 # -> add $dep to ${lib}_deps only once
6073 add_dep() {
6074     lib=$1
6075     dep=$2
6076     enabled "${lib}_deps_${dep}" && return 0
6077     enable  "${lib}_deps_${dep}"
6078     prepend "${lib}_deps" $dep
6079 }
6080
6081 # merge deps lib components
6082 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6083 merge_deps() {
6084     lib=$1
6085     shift
6086     for comp in $*; do
6087         enabled $comp || continue
6088         eval "dep=\"\$${comp}_deps\""
6089         for d in $dep; do
6090             add_dep $lib $d
6091         done
6092     done
6093 }
6094
6095 merge_deps libavfilter $FILTER_LIST
6096
6097 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6098
6099 for thread in $THREADS_LIST; do
6100     if enabled $thread; then
6101         test -n "$thread_type" &&
6102             die "ERROR: Only one thread type must be selected." ||
6103             thread_type="$thread"
6104     fi
6105 done
6106
6107 enabled zlib && add_cppflags -DZLIB_CONST
6108
6109 # conditional library dependencies, in linking order
6110 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6111 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6112 enabled aresample_filter    && prepend avfilter_deps "swresample"
6113 enabled asyncts_filter      && prepend avfilter_deps "avresample"
6114 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6115 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6116 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6117 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6118 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6119 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6120 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6121 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6122 enabled pan_filter          && prepend avfilter_deps "swresample"
6123 enabled pp_filter           && prepend avfilter_deps "postproc"
6124 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6125 enabled resample_filter && prepend avfilter_deps "avresample"
6126 enabled sab_filter          && prepend avfilter_deps "swscale"
6127 enabled scale_filter    && prepend avfilter_deps "swscale"
6128 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6129 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6130 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6131 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6132 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6133 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6134 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6135 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6136 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6137
6138 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6139
6140 enabled opus_decoder    && prepend avcodec_deps "swresample"
6141
6142 expand_deps(){
6143     lib_deps=${1}_deps
6144     eval "deps=\$$lib_deps"
6145     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6146     unique $lib_deps
6147 }
6148
6149 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6150 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6151
6152 map 'expand_deps $v' $LIBRARY_LIST
6153
6154 echo "install prefix            $prefix"
6155 echo "source path               $source_path"
6156 echo "C compiler                $cc"
6157 echo "C library                 $libc_type"
6158 if test "$host_cc" != "$cc"; then
6159     echo "host C compiler           $host_cc"
6160     echo "host C library            $host_libc_type"
6161 fi
6162 echo "ARCH                      $arch ($cpu)"
6163 if test "$build_suffix" != ""; then
6164     echo "build suffix              $build_suffix"
6165 fi
6166 if test "$progs_suffix" != ""; then
6167     echo "progs suffix              $progs_suffix"
6168 fi
6169 if test "$extra_version" != ""; then
6170     echo "version string suffix     $extra_version"
6171 fi
6172 echo "big-endian                ${bigendian-no}"
6173 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6174 if enabled x86; then
6175     echo "${yasmexe}                      ${yasm-no}"
6176     echo "MMX enabled               ${mmx-no}"
6177     echo "MMXEXT enabled            ${mmxext-no}"
6178     echo "3DNow! enabled            ${amd3dnow-no}"
6179     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6180     echo "SSE enabled               ${sse-no}"
6181     echo "SSSE3 enabled             ${ssse3-no}"
6182     echo "AESNI enabled             ${aesni-no}"
6183     echo "AVX enabled               ${avx-no}"
6184     echo "XOP enabled               ${xop-no}"
6185     echo "FMA3 enabled              ${fma3-no}"
6186     echo "FMA4 enabled              ${fma4-no}"
6187     echo "i686 features enabled     ${i686-no}"
6188     echo "CMOV is fast              ${fast_cmov-no}"
6189     echo "EBX available             ${ebx_available-no}"
6190     echo "EBP available             ${ebp_available-no}"
6191 fi
6192 if enabled aarch64; then
6193     echo "NEON enabled              ${neon-no}"
6194     echo "VFP enabled               ${vfp-no}"
6195 fi
6196 if enabled arm; then
6197     echo "ARMv5TE enabled           ${armv5te-no}"
6198     echo "ARMv6 enabled             ${armv6-no}"
6199     echo "ARMv6T2 enabled           ${armv6t2-no}"
6200     echo "VFP enabled               ${vfp-no}"
6201     echo "NEON enabled              ${neon-no}"
6202     echo "THUMB enabled             ${thumb-no}"
6203 fi
6204 if enabled mips; then
6205     echo "MIPS FPU enabled          ${mipsfpu-no}"
6206     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6207     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6208     echo "MIPS MSA enabled          ${msa-no}"
6209     echo "LOONGSON MMI enabled      ${mmi-no}"
6210 fi
6211 if enabled ppc; then
6212     echo "AltiVec enabled           ${altivec-no}"
6213     echo "VSX enabled               ${vsx-no}"
6214     echo "POWER8 enabled            ${power8-no}"
6215     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6216     echo "dcbzl available           ${dcbzl-no}"
6217 fi
6218 echo "debug symbols             ${debug-no}"
6219 echo "strip symbols             ${stripping-no}"
6220 echo "optimize for size         ${small-no}"
6221 echo "optimizations             ${optimizations-no}"
6222 echo "static                    ${static-no}"
6223 echo "shared                    ${shared-no}"
6224 echo "postprocessing support    ${postproc-no}"
6225 echo "new filter support        ${avfilter-no}"
6226 echo "network support           ${network-no}"
6227 echo "threading support         ${thread_type-no}"
6228 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6229 echo "SDL support               ${sdl-no}"
6230 echo "opencl enabled            ${opencl-no}"
6231 echo "texi2html enabled         ${texi2html-no}"
6232 echo "perl enabled              ${perl-no}"
6233 echo "pod2man enabled           ${pod2man-no}"
6234 echo "makeinfo enabled          ${makeinfo-no}"
6235 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6236 test -n "$random_seed" &&
6237     echo "random seed               ${random_seed}"
6238 echo
6239
6240 echo "Enabled programs:"
6241 print_enabled '' $PROGRAM_LIST | print_in_columns
6242 echo
6243
6244 echo "External libraries:"
6245 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6246 echo
6247
6248 echo "Libraries:"
6249 print_enabled '' $LIBRARY_LIST | print_in_columns
6250 echo
6251
6252 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6253     echo "Enabled ${type}s:"
6254     eval list=\$$(toupper $type)_LIST
6255     print_enabled '_*' $list | print_in_columns
6256     echo
6257 done
6258
6259 license="LGPL version 2.1 or later"
6260 if enabled nonfree; then
6261     license="nonfree and unredistributable"
6262 elif enabled gplv3; then
6263     license="GPL version 3 or later"
6264 elif enabled lgplv3; then
6265     license="LGPL version 3 or later"
6266 elif enabled gpl; then
6267     license="GPL version 2 or later"
6268 fi
6269
6270 echo "License: $license"
6271
6272 echo "Creating config.mak, config.h, and doc/config.texi..."
6273
6274 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6275
6276 enabled stripping || strip="echo skipping strip"
6277
6278 config_files="$TMPH config.mak doc/config.texi"
6279
6280 cat > config.mak <<EOF
6281 # Automatically generated by configure - do not modify!
6282 ifndef FFMPEG_CONFIG_MAK
6283 FFMPEG_CONFIG_MAK=1
6284 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6285 prefix=$prefix
6286 LIBDIR=\$(DESTDIR)$libdir
6287 SHLIBDIR=\$(DESTDIR)$shlibdir
6288 INCDIR=\$(DESTDIR)$incdir
6289 BINDIR=\$(DESTDIR)$bindir
6290 DATADIR=\$(DESTDIR)$datadir
6291 DOCDIR=\$(DESTDIR)$docdir
6292 MANDIR=\$(DESTDIR)$mandir
6293 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6294 SRC_PATH=$source_path
6295 SRC_LINK=$source_link
6296 ifndef MAIN_MAKEFILE
6297 SRC_PATH:=\$(SRC_PATH:.%=..%)
6298 endif
6299 CC_IDENT=$cc_ident
6300 ARCH=$arch
6301 INTRINSICS=$intrinsics
6302 CC=$cc
6303 CXX=$cxx
6304 AS=$as
6305 OBJCC=$objcc
6306 LD=$ld
6307 DEPCC=$dep_cc
6308 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6309 DEPAS=$as
6310 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6311 YASM=$yasmexe
6312 DEPYASM=$yasmexe
6313 AR=$ar
6314 ARFLAGS=$arflags
6315 AR_O=$ar_o
6316 RANLIB=$ranlib
6317 STRIP=$strip
6318 CP=cp -p
6319 LN_S=$ln_s
6320 CPPFLAGS=$CPPFLAGS
6321 CFLAGS=$CFLAGS
6322 CXXFLAGS=$CXXFLAGS
6323 OBJCFLAGS=$OBJCFLAGS
6324 ASFLAGS=$ASFLAGS
6325 AS_C=$AS_C
6326 AS_O=$AS_O
6327 OBJCC_C=$OBJCC_C
6328 OBJCC_E=$OBJCC_E
6329 OBJCC_O=$OBJCC_O
6330 CC_C=$CC_C
6331 CC_E=$CC_E
6332 CC_O=$CC_O
6333 CXX_C=$CXX_C
6334 CXX_O=$CXX_O
6335 LD_O=$LD_O
6336 LD_LIB=$LD_LIB
6337 LD_PATH=$LD_PATH
6338 DLLTOOL=$dlltool
6339 WINDRES=$windres
6340 DEPWINDRES=$dep_cc
6341 DOXYGEN=$doxygen
6342 LDFLAGS=$LDFLAGS
6343 LDEXEFLAGS=$LDEXEFLAGS
6344 LDLIBFLAGS=$LDLIBFLAGS
6345 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6346 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6347 YASMFLAGS=$YASMFLAGS
6348 BUILDSUF=$build_suffix
6349 PROGSSUF=$progs_suffix
6350 FULLNAME=$FULLNAME
6351 LIBPREF=$LIBPREF
6352 LIBSUF=$LIBSUF
6353 LIBNAME=$LIBNAME
6354 SLIBPREF=$SLIBPREF
6355 SLIBSUF=$SLIBSUF
6356 EXESUF=$EXESUF
6357 EXTRA_VERSION=$extra_version
6358 CCDEP=$CCDEP
6359 CXXDEP=$CXXDEP
6360 CCDEP_FLAGS=$CCDEP_FLAGS
6361 ASDEP=$ASDEP
6362 ASDEP_FLAGS=$ASDEP_FLAGS
6363 CC_DEPFLAGS=$CC_DEPFLAGS
6364 AS_DEPFLAGS=$AS_DEPFLAGS
6365 HOSTCC=$host_cc
6366 HOSTLD=$host_ld
6367 HOSTCFLAGS=$host_cflags
6368 HOSTCPPFLAGS=$host_cppflags
6369 HOSTEXESUF=$HOSTEXESUF
6370 HOSTLDFLAGS=$host_ldflags
6371 HOSTLIBS=$host_libs
6372 DEPHOSTCC=$host_cc
6373 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6374 HOSTCCDEP=$HOSTCCDEP
6375 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6376 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6377 HOSTCC_C=$HOSTCC_C
6378 HOSTCC_O=$HOSTCC_O
6379 HOSTLD_O=$HOSTLD_O
6380 TARGET_EXEC=$target_exec $target_exec_args
6381 TARGET_PATH=$target_path
6382 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6383 CFLAGS-ffplay=$sdl_cflags
6384 ZLIB=$($ldflags_filter -lz)
6385 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6386 EXTRALIBS=$extralibs
6387 COMPAT_OBJS=$compat_objs
6388 EXEOBJS=$exeobjs
6389 INSTALL=$install
6390 LIBTARGET=${LIBTARGET}
6391 SLIBNAME=${SLIBNAME}
6392 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6393 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6394 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6395 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6396 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6397 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6398 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6399 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6400 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6401 NOREDZONE_FLAGS=$noredzone_flags
6402 EOF
6403
6404 get_version(){
6405     lcname=lib${1}
6406     name=$(toupper $lcname)
6407     file=$source_path/$lcname/version.h
6408     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6409     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6410     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6411     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6412     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6413     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6414 }
6415
6416 map 'get_version $v' $LIBRARY_LIST
6417
6418 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6419
6420 print_program_libs(){
6421     eval "program_libs=\$${1}_libs"
6422     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6423 }
6424
6425 map 'print_program_libs $v' $PROGRAM_LIST
6426
6427 cat > $TMPH <<EOF
6428 /* Automatically generated by configure - do not modify! */
6429 #ifndef FFMPEG_CONFIG_H
6430 #define FFMPEG_CONFIG_H
6431 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6432 #define FFMPEG_LICENSE "$(c_escape $license)"
6433 #define CONFIG_THIS_YEAR 2016
6434 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6435 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6436 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6437 #define av_restrict $_restrict
6438 #define EXTERN_PREFIX "${extern_prefix}"
6439 #define EXTERN_ASM ${extern_prefix}
6440 #define BUILDSUF "$build_suffix"
6441 #define SLIBSUF "$SLIBSUF"
6442 #define HAVE_MMX2 HAVE_MMXEXT
6443 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6444 EOF
6445
6446 test -n "$assert_level" &&
6447     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6448
6449 test -n "$malloc_prefix" &&
6450     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6451
6452 if enabled yasm; then
6453     append config_files $TMPASM
6454     printf '' >$TMPASM
6455 fi
6456
6457 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6458
6459
6460 mkdir -p doc
6461 mkdir -p tests
6462 mkdir -p tests/api
6463 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6464
6465 print_config ARCH_   "$config_files" $ARCH_LIST
6466 print_config HAVE_   "$config_files" $HAVE_LIST
6467 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6468                                      $CONFIG_EXTRA      \
6469                                      $ALL_COMPONENTS    \
6470
6471 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6472 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6473
6474 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6475 cp_if_changed $TMPH config.h
6476 touch .config
6477
6478 enabled yasm && cp_if_changed $TMPASM config.asm
6479
6480 cat > $TMPH <<EOF
6481 /* Generated by ffconf */
6482 #ifndef AVUTIL_AVCONFIG_H
6483 #define AVUTIL_AVCONFIG_H
6484 EOF
6485
6486 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6487
6488 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6489
6490 cp_if_changed $TMPH libavutil/avconfig.h
6491
6492 if test -n "$WARNINGS"; then
6493     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6494     enabled fatal_warnings && exit 1
6495 fi
6496
6497 # build pkg-config files
6498
6499 lib_version(){
6500     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6501 }
6502
6503 pkgconfig_generate(){
6504     name=$1
6505     shortname=${name#lib}${build_suffix}
6506     comment=$2
6507     version=$3
6508     libs=$4
6509     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6510     requires=${requires%, }
6511     enabled ${name#lib} || return 0
6512     mkdir -p $name
6513     cat <<EOF > $name/$name${build_suffix}.pc
6514 prefix=$prefix
6515 exec_prefix=\${prefix}
6516 libdir=$libdir
6517 includedir=$incdir
6518
6519 Name: $name
6520 Description: $comment
6521 Version: $version
6522 Requires: $(enabled shared || echo $requires)
6523 Requires.private: $(enabled shared && echo $requires)
6524 Conflicts:
6525 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6526 Libs.private: $(enabled shared && echo $libs)
6527 Cflags: -I\${includedir}
6528 EOF
6529
6530 mkdir -p doc/examples/pc-uninstalled
6531 includedir=${source_path}
6532 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6533     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
6534 prefix=
6535 exec_prefix=
6536 libdir=\${pcfiledir}/../../../$name
6537 includedir=${includedir}
6538
6539 Name: $name
6540 Description: $comment
6541 Version: $version
6542 Requires: $requires
6543 Conflicts:
6544 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6545 Cflags: -I\${includedir}
6546 EOF
6547 }
6548
6549 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6550 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6551 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6552 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6553 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6554 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6555 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6556 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6557 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"