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 [PREFIX/lib]
  88   --incdir=DIR             install includes in DIR [PREFIX/include]
  89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  90   --enable-rpath           use rpath to allow installing libraries in paths
  91                            not part of the dynamic linker search path
  92                            use rpath when linking programs [USE WITH CARE]
  93
  94 Licensing options:
  95   --enable-gpl             allow use of GPL code, the resulting libs
  96                            and binaries will be under GPL [no]
  97   --enable-version3        upgrade (L)GPL to version 3 [no]
  98   --enable-nonfree         allow use of nonfree code, the resulting libs
  99                            and binaries will be unredistributable [no]
 100
 101 Configuration options:
 102   --disable-static         do not build static libraries [no]
 103   --enable-shared          build shared libraries [no]
 104   --enable-small           optimize for size instead of speed
 105   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
 106   --enable-gray            enable full grayscale support (slower color)
 107   --disable-swscale-alpha  disable alpha channel support in swscale
 108   --disable-all            disable building components, libraries and programs
 109   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
 110   --enable-raise-major     increase major version numbers in sonames [no]
 111
 112 Program options:
 113   --disable-programs       do not build command line programs
 114   --disable-ffmpeg         disable ffmpeg build
 115   --disable-ffplay         disable ffplay build
 116   --disable-ffprobe        disable ffprobe build
 117   --disable-ffserver       disable ffserver build
 118
 119 Documentation options:
 120   --disable-doc            do not build documentation
 121   --disable-htmlpages      do not build HTML documentation pages
 122   --disable-manpages       do not build man documentation pages
 123   --disable-podpages       do not build POD documentation pages
 124   --disable-txtpages       do not build text documentation pages
 125
 126 Component options:
 127   --disable-avdevice       disable libavdevice build
 128   --disable-avcodec        disable libavcodec build
 129   --disable-avformat       disable libavformat build
 130   --disable-avutil         disable libavutil 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 [auto]
 137   --disable-w32threads     disable Win32 threads [auto]
 138   --disable-os2threads     disable OS/2 threads [auto]
 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-dxva2          disable DXVA2 code [autodetect]
 153   --disable-vaapi          disable VAAPI code [autodetect]
 154   --disable-vda            disable VDA code [autodetect]
 155   --disable-vdpau          disable VDPAU code [autodetect]
 156
 157 Individual component options:
 158   --disable-everything     disable all components listed below
 159   --disable-encoder=NAME   disable encoder NAME
 160   --enable-encoder=NAME    enable encoder NAME
 161   --disable-encoders       disable all encoders
 162   --disable-decoder=NAME   disable decoder NAME
 163   --enable-decoder=NAME    enable decoder NAME
 164   --disable-decoders       disable all decoders
 165   --disable-hwaccel=NAME   disable hwaccel NAME
 166   --enable-hwaccel=NAME    enable hwaccel NAME
 167   --disable-hwaccels       disable all hwaccels
 168   --disable-muxer=NAME     disable muxer NAME
 169   --enable-muxer=NAME      enable muxer NAME
 170   --disable-muxers         disable all muxers
 171   --disable-demuxer=NAME   disable demuxer NAME
 172   --enable-demuxer=NAME    enable demuxer NAME
 173   --disable-demuxers       disable all demuxers
 174   --enable-parser=NAME     enable parser NAME
 175   --disable-parser=NAME    disable parser NAME
 176   --disable-parsers        disable all parsers
 177   --enable-bsf=NAME        enable bitstream filter NAME
 178   --disable-bsf=NAME       disable bitstream filter NAME
 179   --disable-bsfs           disable all bitstream filters
 180   --enable-protocol=NAME   enable protocol NAME
 181   --disable-protocol=NAME  disable protocol NAME
 182   --disable-protocols      disable all protocols
 183   --enable-indev=NAME      enable input device NAME
 184   --disable-indev=NAME     disable input device NAME
 185   --disable-indevs         disable input devices
 186   --enable-outdev=NAME     enable output device NAME
 187   --disable-outdev=NAME    disable output device NAME
 188   --disable-outdevs        disable output devices
 189   --disable-devices        disable all devices
 190   --enable-filter=NAME     enable filter NAME
 191   --disable-filter=NAME    disable filter NAME
 192   --disable-filters        disable all filters
 193
 194 External library support:
 195   --enable-avisynth        enable reading of AviSynth script files [no]
 196   --disable-bzlib          disable bzlib [autodetect]
 197   --enable-fontconfig      enable fontconfig
 198   --enable-frei0r          enable frei0r video filtering
 199   --enable-gnutls          enable gnutls [no]
 200   --disable-iconv          disable iconv [autodetect]
 201   --enable-ladspa          enable LADSPA audio filtering
 202   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
 203   --enable-libass          enable libass subtitles rendering [no]
 204   --enable-libbluray       enable BluRay reading using libbluray [no]
 205   --enable-libbs2b         enable bs2b DSP library [no]
 206   --enable-libcaca         enable textual display using libcaca
 207   --enable-libcelt         enable CELT decoding via libcelt [no]
 208   --enable-libcdio         enable audio CD grabbing with libcdio
 209   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 210                            and libraw1394 [no]
 211   --enable-libfaac         enable AAC encoding via libfaac [no]
 212   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 213   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 214   --enable-libfreetype     enable libfreetype [no]
 215   --enable-libfribidi      enable libfribidi [no]
 216   --enable-libgme          enable Game Music Emu via libgme [no]
 217   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 218   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 219   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 220   --enable-libmodplug      enable ModPlug via libmodplug [no]
 221   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 222   --enable-libnut          enable NUT (de)muxing via libnut,
 223                            native (de)muxer exists [no]
 224   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 225   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 226   --enable-libopencv       enable video filtering via libopencv [no]
 227   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 228   --enable-libopus         enable Opus de/encoding via libopus [no]
 229   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 230   --enable-libquvi         enable quvi input via libquvi [no]
 231   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 232   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 233   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 234   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 235   --enable-libsoxr         enable Include libsoxr resampling [no]
 236   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 237   --enable-libssh          enable SFTP protocol via libssh [no]
 238   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
 239   --enable-libtheora       enable Theora encoding via libtheora [no]
 240   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 241   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 242   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 243   --enable-libvidstab      enable video stabilization using vid.stab [no]
 244   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 245   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 246   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 247                            native implementation exists [no]
 248   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 249   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 250   --enable-libwebp         enable WebP encoding via libwebp [no]
 251   --enable-libx264         enable H.264 encoding via x264 [no]
 252   --enable-libx265         enable HEVC encoding via x265 [no]
 253   --enable-libxavs         enable AVS encoding via xavs [no]
 254   --enable-libxvid         enable Xvid encoding via xvidcore,
 255                            native MPEG-4/Xvid encoder exists [no]
 256   --enable-libzmq          enable message passing via libzmq [no]
 257   --enable-libzvbi         enable teletext support via libzvbi [no]
 258   --disable-lzma           disable lzma [autodetect]
 259   --enable-decklink        enable Blackmagick DeckLink output [no]
 260   --enable-openal          enable OpenAL 1.1 capture support [no]
 261   --enable-opencl          enable OpenCL code
 262   --enable-opengl          enable OpenGL rendering [no]
 263   --enable-openssl         enable openssl [no]
 264   --enable-x11grab         enable X11 grabbing [no]
 265   --disable-xlib           disable xlib [autodetect]
 266   --disable-zlib           disable zlib [autodetect]
 267
 268 Toolchain options:
 269   --arch=ARCH              select architecture [$arch]
 270   --cpu=CPU                select the minimum required CPU (affects
 271                            instruction selection, may crash on older CPUs)
 272   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 273   --progs-suffix=SUFFIX    program name suffix []
 274   --enable-cross-compile   assume a cross-compiler is used
 275   --sysroot=PATH           root of cross-build tree
 276   --sysinclude=PATH        location of cross-build system headers
 277   --target-os=OS           compiler targets OS [$target_os]
 278   --target-exec=CMD        command to run executables on target
 279   --target-path=DIR        path to view of build directory on target
 280   --target-samples=DIR     path to samples directory on target
 281   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 282   --toolchain=NAME         set tool defaults according to NAME
 283   --nm=NM                  use nm tool NM [$nm_default]
 284   --ar=AR                  use archive tool AR [$ar_default]
 285   --as=AS                  use assembler AS [$as_default]
 286   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 287   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 288   --cc=CC                  use C compiler CC [$cc_default]
 289   --cxx=CXX                use C compiler CXX [$cxx_default]
 290   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 291   --ld=LD                  use linker LD [$ld_default]
 292   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 293   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 294   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 295   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 296   --host-cc=HOSTCC         use host C compiler HOSTCC
 297   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 298   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 299   --host-ld=HOSTLD         use host linker HOSTLD
 300   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 301   --host-libs=HLIBS        use libs HLIBS when linking for host
 302   --host-os=OS             compiler host OS [$target_os]
 303   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 304   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 305   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 306   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 307   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 308   --extra-version=STRING   version string suffix []
 309   --optflags=OPTFLAGS      override optimization-related compiler flags
 310   --build-suffix=SUFFIX    library name suffix []
 311   --enable-pic             build position-independent code
 312   --enable-thumb           compile for Thumb instruction set
 313   --enable-lto             use link-time optimization
 314
 315 Advanced options (experts only):
 316   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 317   --disable-symver         disable symbol versioning
 318   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 319   --disable-safe-bitstream-reader
 320                            disable buffer boundary checking in bitreaders
 321                            (faster, but may crash)
 322   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 323   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 324
 325 Optimization options (experts only):
 326   --disable-asm            disable all assembly optimizations
 327   --disable-altivec        disable AltiVec optimizations
 328   --disable-amd3dnow       disable 3DNow! optimizations
 329   --disable-amd3dnowext    disable 3DNow! extended optimizations
 330   --disable-mmx            disable MMX optimizations
 331   --disable-mmxext         disable MMXEXT optimizations
 332   --disable-sse            disable SSE optimizations
 333   --disable-sse2           disable SSE2 optimizations
 334   --disable-sse3           disable SSE3 optimizations
 335   --disable-ssse3          disable SSSE3 optimizations
 336   --disable-sse4           disable SSE4 optimizations
 337   --disable-sse42          disable SSE4.2 optimizations
 338   --disable-avx            disable AVX optimizations
 339   --disable-xop            disable XOP optimizations
 340   --disable-fma3           disable FMA3 optimizations
 341   --disable-fma4           disable FMA4 optimizations
 342   --disable-avx2           disable AVX2 optimizations
 343   --disable-armv5te        disable armv5te optimizations
 344   --disable-armv6          disable armv6 optimizations
 345   --disable-armv6t2        disable armv6t2 optimizations
 346   --disable-vfp            disable VFP optimizations
 347   --disable-neon           disable NEON optimizations
 348   --disable-inline-asm     disable use of inline assembly
 349   --disable-yasm           disable use of nasm/yasm assembly
 350   --disable-mips32r2       disable MIPS32R2 optimizations
 351   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
 352   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 353   --disable-mipsfpu        disable floating point MIPS optimizations
 354   --disable-fast-unaligned consider unaligned accesses slow
 355
 356 Developer options (useful when working on FFmpeg itself):
 357   --disable-debug          disable debugging symbols
 358   --enable-debug=LEVEL     set the debug level [$debuglevel]
 359   --disable-optimizations  disable compiler optimizations
 360   --enable-extra-warnings  enable more compiler warnings
 361   --disable-stripping      disable stripping of executables and shared libraries
 362   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 363                            2 causes a slowdown at runtime.
 364   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 365   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 366                            leaks and errors, using the specified valgrind binary.
 367                            Cannot be combined with --target-exec
 368   --enable-ftrapv          Trap arithmetic overflows
 369   --samples=PATH           location of test samples for FATE, if not set use
 370                            \$FATE_SAMPLES at make invocation time.
 371   --enable-neon-clobber-test check NEON registers for clobbering (should be
 372                            used only for debugging purposes)
 373   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 374                            should be used only for debugging purposes)
 375   --enable-random          randomly enable/disable components
 376   --disable-random
 377   --enable-random=LIST     randomly enable/disable specific components or
 378   --disable-random=LIST    component groups. LIST is a comma-separated list
 379                            of NAME[:PROB] entries where NAME is a component
 380                            (group) and PROB the probability associated with
 381                            NAME (default 0.5).
 382   --random-seed=VALUE      seed value for --enable/disable-random
 383
 384 NOTE: Object files are built at the place where configure is launched.
 385 EOF
 386   exit 0
 387 }
 388
 389 quotes='""'
 390
 391 log(){
 392     echo "$@" >> $logfile
 393 }
 394
 395 log_file(){
 396     log BEGIN $1
 397     pr -n -t $1 >> $logfile
 398     log END $1
 399 }
 400
 401 echolog(){
 402     log "$@"
 403     echo "$@"
 404 }
 405
 406 warn(){
 407     log "WARNING: $*"
 408     WARNINGS="${WARNINGS}WARNING: $*\n"
 409 }
 410
 411 die(){
 412     echolog "$@"
 413     cat <<EOF
 414
 415 If you think configure made a mistake, make sure you are using the latest
 416 version from Git.  If the latest version fails, report the problem to the
 417 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 418 EOF
 419     if disabled logging; then
 420         cat <<EOF
 421 Rerun configure with logging enabled (do not use --disable-logging), and
 422 include the log this produces with your report.
 423 EOF
 424     else
 425         cat <<EOF
 426 Include the log file "$logfile" produced by configure as this will help
 427 solve the problem.
 428 EOF
 429     fi
 430     exit 1
 431 }
 432
 433 # Avoid locale weirdness, besides we really just want to translate ASCII.
 434 toupper(){
 435     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 436 }
 437
 438 tolower(){
 439     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 440 }
 441
 442 c_escape(){
 443     echo "$*" | sed 's/["\\]/\\\0/g'
 444 }
 445
 446 sh_quote(){
 447     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 448     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 449     echo "$v"
 450 }
 451
 452 cleanws(){
 453     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\\r//g'
 454 }
 455
 456 filter(){
 457     pat=$1
 458     shift
 459     for v; do
 460         eval "case $v in $pat) echo $v ;; esac"
 461     done
 462 }
 463
 464 filter_out(){
 465     pat=$1
 466     shift
 467     for v; do
 468         eval "case $v in $pat) ;; *) echo $v ;; esac"
 469     done
 470 }
 471
 472 map(){
 473     m=$1
 474     shift
 475     for v; do eval $m; done
 476 }
 477
 478 add_suffix(){
 479     suffix=$1
 480     shift
 481     for v; do echo ${v}${suffix}; done
 482 }
 483
 484 set_all(){
 485     value=$1
 486     shift
 487     for var in $*; do
 488         eval $var=$value
 489     done
 490 }
 491
 492 set_weak(){
 493     value=$1
 494     shift
 495     for var; do
 496         eval : \${$var:=$value}
 497     done
 498 }
 499
 500 sanitize_var_name(){
 501     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 502 }
 503
 504 set_safe(){
 505     var=$1
 506     shift
 507     eval $(sanitize_var_name "$var")='$*'
 508 }
 509
 510 get_safe(){
 511     eval echo \$$(sanitize_var_name "$1")
 512 }
 513
 514 pushvar(){
 515     for pvar in $*; do
 516         eval level=\${${pvar}_level:=0}
 517         eval ${pvar}_${level}="\$$pvar"
 518         eval ${pvar}_level=$(($level+1))
 519     done
 520 }
 521
 522 popvar(){
 523     for pvar in $*; do
 524         eval level=\${${pvar}_level:-0}
 525         test $level = 0 && continue
 526         eval level=$(($level-1))
 527         eval $pvar="\${${pvar}_${level}}"
 528         eval ${pvar}_level=$level
 529         eval unset ${pvar}_${level}
 530     done
 531 }
 532
 533 enable(){
 534     set_all yes $*
 535 }
 536
 537 disable(){
 538     set_all no $*
 539 }
 540
 541 enable_weak(){
 542     set_weak yes $*
 543 }
 544
 545 disable_weak(){
 546     set_weak no $*
 547 }
 548
 549 enable_safe(){
 550     for var; do
 551         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 552     done
 553 }
 554
 555 disable_safe(){
 556     for var; do
 557         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 558     done
 559 }
 560
 561 do_enable_deep(){
 562     for var; do
 563         enabled $var && continue
 564         eval sel="\$${var}_select"
 565         eval sgs="\$${var}_suggest"
 566         pushvar var sgs
 567         enable_deep $sel
 568         popvar sgs
 569         enable_deep_weak $sgs
 570         popvar var
 571     done
 572 }
 573
 574 enable_deep(){
 575     do_enable_deep $*
 576     enable $*
 577 }
 578
 579 enable_deep_weak(){
 580     for var; do
 581         disabled $var && continue
 582         pushvar var
 583         do_enable_deep $var
 584         popvar var
 585         enable_weak $var
 586     done
 587 }
 588
 589 enabled(){
 590     test "${1#!}" = "$1" && op== || op=!=
 591     eval test "x\$${1#!}" $op "xyes"
 592 }
 593
 594 disabled(){
 595     test "${1#!}" = "$1" && op== || op=!=
 596     eval test "x\$${1#!}" $op "xno"
 597 }
 598
 599 enabled_all(){
 600     for opt; do
 601         enabled $opt || return 1
 602     done
 603 }
 604
 605 disabled_all(){
 606     for opt; do
 607         disabled $opt || return 1
 608     done
 609 }
 610
 611 enabled_any(){
 612     for opt; do
 613         enabled $opt && return 0
 614     done
 615 }
 616
 617 disabled_any(){
 618     for opt; do
 619         disabled $opt && return 0
 620     done
 621     return 1
 622 }
 623
 624 set_default(){
 625     for opt; do
 626         eval : \${$opt:=\$${opt}_default}
 627     done
 628 }
 629
 630 is_in(){
 631     value=$1
 632     shift
 633     for var in $*; do
 634         [ $var = $value ] && return 0
 635     done
 636     return 1
 637 }
 638
 639 do_check_deps(){
 640     for cfg; do
 641         cfg="${cfg#!}"
 642         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 643         disabled ${cfg}_checking && continue
 644         enable ${cfg}_checking
 645         append allopts $cfg
 646
 647         eval dep_all="\$${cfg}_deps"
 648         eval dep_any="\$${cfg}_deps_any"
 649         eval dep_sel="\$${cfg}_select"
 650         eval dep_sgs="\$${cfg}_suggest"
 651         eval dep_ifa="\$${cfg}_if"
 652         eval dep_ifn="\$${cfg}_if_any"
 653
 654         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 655         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 656         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 657
 658         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 659         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 660         enabled_all  $dep_all || disable $cfg
 661         enabled_any  $dep_any || disable $cfg
 662         disabled_any $dep_sel && disable $cfg
 663
 664         if enabled $cfg; then
 665             enable_deep $dep_sel
 666             enable_deep_weak $dep_sgs
 667         fi
 668
 669         disable ${cfg}_checking
 670     done
 671 }
 672
 673 check_deps(){
 674     unset allopts
 675
 676     do_check_deps "$@"
 677
 678     for cfg in $allopts; do
 679         enabled $cfg || continue
 680         eval dep_extralibs="\$${cfg}_extralibs"
 681         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 682     done
 683 }
 684
 685 print_config(){
 686     pfx=$1
 687     files=$2
 688     shift 2
 689     map 'eval echo "$v \${$v:-no}"' "$@" |
 690     awk "BEGIN { split(\"$files\", files) }
 691         {
 692             c = \"$pfx\" toupper(\$1);
 693             v = \$2;
 694             sub(/yes/, 1, v);
 695             sub(/no/,  0, v);
 696             for (f in files) {
 697                 file = files[f];
 698                 if (file ~ /\\.h\$/) {
 699                     printf(\"#define %s %d\\n\", c, v) >>file;
 700                 } else if (file ~ /\\.asm\$/) {
 701                     printf(\"%%define %s %d\\n\", c, v) >>file;
 702                 } else if (file ~ /\\.mak\$/) {
 703                     n = -v ? \"\" : \"!\";
 704                     printf(\"%s%s=yes\\n\", n, c) >>file;
 705                 } else if (file ~ /\\.texi\$/) {
 706                     pre = -v ? \"\" : \"@c \";
 707                     yesno = \$2;
 708                     c2 = tolower(c);
 709                     gsub(/_/, \"-\", c2);
 710                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 711                 }
 712             }
 713         }"
 714 }
 715
 716 print_enabled(){
 717     suf=$1
 718     shift
 719     for v; do
 720         enabled $v && printf "%s\n" ${v%$suf};
 721     done
 722 }
 723
 724 append(){
 725     var=$1
 726     shift
 727     eval "$var=\"\$$var $*\""
 728 }
 729
 730 prepend(){
 731     var=$1
 732     shift
 733     eval "$var=\"$* \$$var\""
 734 }
 735
 736 unique(){
 737     var=$1
 738     uniq_list=""
 739     for tok in $(eval echo \$$var); do
 740         uniq_list="$(filter_out $tok $uniq_list) $tok"
 741     done
 742     eval "$var=\"${uniq_list}\""
 743 }
 744
 745 add_cppflags(){
 746     append CPPFLAGS "$@"
 747 }
 748
 749 add_cflags(){
 750     append CFLAGS $($cflags_filter "$@")
 751 }
 752
 753 add_cxxflags(){
 754     append CXXFLAGS $($cflags_filter "$@")
 755 }
 756
 757 add_asflags(){
 758     append ASFLAGS $($asflags_filter "$@")
 759 }
 760
 761 add_ldflags(){
 762     append LDFLAGS $($ldflags_filter "$@")
 763 }
 764
 765 add_ldexeflags(){
 766     append LDEXEFLAGS $($ldflags_filter "$@")
 767 }
 768
 769 add_stripflags(){
 770     append ASMSTRIPFLAGS "$@"
 771 }
 772
 773 add_extralibs(){
 774     prepend extralibs $($ldflags_filter "$@")
 775 }
 776
 777 add_host_cppflags(){
 778     append host_cppflags "$@"
 779 }
 780
 781 add_host_cflags(){
 782     append host_cflags $($host_cflags_filter "$@")
 783 }
 784
 785 add_host_ldflags(){
 786     append host_ldflags $($host_ldflags_filter "$@")
 787 }
 788
 789 add_compat(){
 790     append compat_objs $1
 791     shift
 792     map 'add_cppflags -D$v' "$@"
 793 }
 794
 795 check_cmd(){
 796     log "$@"
 797     "$@" >> $logfile 2>&1
 798 }
 799
 800 check_stat(){
 801     log check_stat "$@"
 802     stat "$1" >> $logfile 2>&1
 803 }
 804
 805 cc_o(){
 806     eval printf '%s\\n' $CC_O
 807 }
 808
 809 cc_e(){
 810     eval printf '%s\\n' $CC_E
 811 }
 812
 813 check_cc(){
 814     log check_cc "$@"
 815     cat > $TMPC
 816     log_file $TMPC
 817     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 818 }
 819
 820 check_cxx(){
 821     log check_cxx "$@"
 822     cat > $TMPCPP
 823     log_file $TMPCPP
 824     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 825 }
 826
 827 check_oc(){
 828     log check_oc "$@"
 829     cat > $TMPM
 830     log_file $TMPM
 831     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
 832 }
 833
 834 check_cpp(){
 835     log check_cpp "$@"
 836     cat > $TMPC
 837     log_file $TMPC
 838     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 839 }
 840
 841 as_o(){
 842     eval printf '%s\\n' $AS_O
 843 }
 844
 845 check_as(){
 846     log check_as "$@"
 847     cat > $TMPS
 848     log_file $TMPS
 849     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 850 }
 851
 852 check_inline_asm(){
 853     log check_inline_asm "$@"
 854     name="$1"
 855     code="$2"
 856     shift 2
 857     disable $name
 858     check_cc "$@" <<EOF && enable $name
 859 void foo(void){ __asm__ volatile($code); }
 860 EOF
 861 }
 862
 863 check_insn(){
 864     log check_insn "$@"
 865     check_inline_asm ${1}_inline "\"$2\""
 866     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 867 }
 868
 869 check_yasm(){
 870     log check_yasm "$@"
 871     echo "$1" > $TMPS
 872     log_file $TMPS
 873     shift 1
 874     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 875 }
 876
 877 ld_o(){
 878     eval printf '%s\\n' $LD_O
 879 }
 880
 881 check_ld(){
 882     log check_ld "$@"
 883     type=$1
 884     shift 1
 885     flags=$(filter_out '-l*|*.so' $@)
 886     libs=$(filter '-l*|*.so' $@)
 887     check_$type $($cflags_filter $flags) || return
 888     flags=$($ldflags_filter $flags)
 889     libs=$($ldflags_filter $libs)
 890     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 891 }
 892
 893 print_include(){
 894     hdr=$1
 895     test "${hdr%.h}" = "${hdr}" &&
 896         echo "#include $hdr"    ||
 897         echo "#include <$hdr>"
 898 }
 899
 900 check_code(){
 901     log check_code "$@"
 902     check=$1
 903     headers=$2
 904     code=$3
 905     shift 3
 906     {
 907         for hdr in $headers; do
 908             print_include $hdr
 909         done
 910         echo "int main(void) { $code; return 0; }"
 911     } | check_$check "$@"
 912 }
 913
 914 check_cppflags(){
 915     log check_cppflags "$@"
 916     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 917 int x;
 918 EOF
 919 }
 920
 921 test_cflags(){
 922     log test_cflags "$@"
 923     set -- $($cflags_filter "$@")
 924     check_cc "$@" <<EOF
 925 int x;
 926 EOF
 927 }
 928
 929 check_cflags(){
 930     log check_cflags "$@"
 931     test_cflags "$@" && add_cflags "$@"
 932 }
 933
 934 check_cxxflags(){
 935     log check_cxxflags "$@"
 936     set -- $($cflags_filter "$@")
 937     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
 938 int x;
 939 EOF
 940 }
 941
 942 test_ldflags(){
 943     log test_ldflags "$@"
 944     check_ld "cc" "$@" <<EOF
 945 int main(void){ return 0; }
 946 EOF
 947 }
 948
 949 check_ldflags(){
 950     log check_ldflags "$@"
 951     test_ldflags "$@" && add_ldflags "$@"
 952 }
 953
 954 test_stripflags(){
 955     log test_stripflags "$@"
 956     # call check_cc to get a fresh TMPO
 957     check_cc <<EOF
 958 int main(void) { return 0; }
 959 EOF
 960     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
 961 }
 962
 963 check_stripflags(){
 964     log check_stripflags "$@"
 965     test_stripflags "$@" && add_stripflags "$@"
 966 }
 967
 968 check_header(){
 969     log check_header "$@"
 970     header=$1
 971     shift
 972     disable_safe $header
 973     check_cpp "$@" <<EOF && enable_safe $header
 974 #include <$header>
 975 int x;
 976 EOF
 977 }
 978
 979 check_header_oc(){
 980     log check_header_oc "$@"
 981     rm -f -- "$TMPO"
 982     header=$1
 983     shift
 984     disable_safe $header
 985     {
 986        echo "#include <$header>"
 987        echo "int main(void) { return 0; }"
 988     } | check_oc && check_stat "$TMPO" && enable_safe $headers
 989 }
 990
 991 check_func(){
 992     log check_func "$@"
 993     func=$1
 994     shift
 995     disable $func
 996     check_ld "cc" "$@" <<EOF && enable $func
 997 extern int $func();
 998 int main(void){ $func(); }
 999 EOF
1000 }
1001
1002 check_mathfunc(){
1003     log check_mathfunc "$@"
1004     func=$1
1005     narg=$2
1006     shift 2
1007     test $narg = 2 && args="f, g" || args="f"
1008     disable $func
1009     check_ld "cc" "$@" <<EOF && enable $func
1010 #include <math.h>
1011 float foo(float f, float g) { return $func($args); }
1012 int main(void){ return (int) foo; }
1013 EOF
1014 }
1015
1016 check_func_headers(){
1017     log check_func_headers "$@"
1018     headers=$1
1019     funcs=$2
1020     shift 2
1021     {
1022         for hdr in $headers; do
1023             print_include $hdr
1024         done
1025         for func in $funcs; do
1026             echo "long check_$func(void) { return (long) $func; }"
1027         done
1028         echo "int main(void) { return 0; }"
1029     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1030 }
1031
1032 check_class_headers_cpp(){
1033     log check_class_headers_cpp "$@"
1034     headers=$1
1035     classes=$2
1036     shift 2
1037     {
1038         for hdr in $headers; do
1039             echo "#include <$hdr>"
1040         done
1041         echo "int main(void) { "
1042         i=1
1043         for class in $classes; do
1044             echo "$class obj$i;"
1045             i=$(expr $i + 1)
1046         done
1047         echo "return 0; }"
1048     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1049 }
1050
1051 check_cpp_condition(){
1052     log check_cpp_condition "$@"
1053     header=$1
1054     condition=$2
1055     shift 2
1056     check_cpp "$@" <<EOF
1057 #include <$header>
1058 #if !($condition)
1059 #error "unsatisfied condition: $condition"
1060 #endif
1061 EOF
1062 }
1063
1064 check_lib(){
1065     log check_lib "$@"
1066     header="$1"
1067     func="$2"
1068     shift 2
1069     check_header $header && check_func $func "$@" && add_extralibs "$@"
1070 }
1071
1072 check_lib2(){
1073     log check_lib2 "$@"
1074     headers="$1"
1075     funcs="$2"
1076     shift 2
1077     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1078 }
1079
1080 check_lib_cpp(){
1081     log check_lib_cpp "$@"
1082     headers="$1"
1083     classes="$2"
1084     shift 2
1085     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1086 }
1087
1088 check_pkg_config(){
1089     log check_pkg_config "$@"
1090     pkgandversion="$1"
1091     pkg="${1%% *}"
1092     headers="$2"
1093     funcs="$3"
1094     shift 3
1095     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1096     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1097     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1098     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1099         set_safe ${pkg}_cflags $pkg_cflags   &&
1100         set_safe ${pkg}_libs   $pkg_libs
1101 }
1102
1103 check_exec(){
1104     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1105 }
1106
1107 check_exec_crash(){
1108     code=$(cat)
1109
1110     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1111     # are safe but may not be available everywhere.  Thus we use
1112     # raise(SIGTERM) instead.  The check is run in a subshell so we
1113     # can redirect the "Terminated" message from the shell.  SIGBUS
1114     # is not defined by standard C so it is used conditionally.
1115
1116     (check_exec "$@") >> $logfile 2>&1 <<EOF
1117 #include <signal.h>
1118 static void sighandler(int sig){
1119     raise(SIGTERM);
1120 }
1121 int foo(void){
1122     $code
1123 }
1124 int (*func_ptr)(void) = foo;
1125 int main(void){
1126     signal(SIGILL, sighandler);
1127     signal(SIGFPE, sighandler);
1128     signal(SIGSEGV, sighandler);
1129 #ifdef SIGBUS
1130     signal(SIGBUS, sighandler);
1131 #endif
1132     return func_ptr();
1133 }
1134 EOF
1135 }
1136
1137 check_type(){
1138     log check_type "$@"
1139     headers=$1
1140     type=$2
1141     shift 2
1142     disable_safe "$type"
1143     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1144 }
1145
1146 check_struct(){
1147     log check_struct "$@"
1148     headers=$1
1149     struct=$2
1150     member=$3
1151     shift 3
1152     disable_safe "${struct}_${member}"
1153     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1154         enable_safe "${struct}_${member}"
1155 }
1156
1157 check_builtin(){
1158     log check_builtin "$@"
1159     name=$1
1160     headers=$2
1161     builtin=$3
1162     shift 3
1163     disable "$name"
1164     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1165 }
1166
1167 check_compile_assert(){
1168     log check_compile_assert "$@"
1169     name=$1
1170     headers=$2
1171     condition=$3
1172     shift 3
1173     disable "$name"
1174     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1175 }
1176
1177 require(){
1178     name="$1"
1179     header="$2"
1180     func="$3"
1181     shift 3
1182     check_lib $header $func "$@" || die "ERROR: $name not found"
1183 }
1184
1185 require2(){
1186     name="$1"
1187     headers="$2"
1188     func="$3"
1189     shift 3
1190     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1191 }
1192
1193 require_cpp(){
1194     name="$1"
1195     headers="$2"
1196     classes="$3"
1197     shift 3
1198     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1199 }
1200
1201 require_pkg_config(){
1202     pkg="$1"
1203     check_pkg_config "$@" || die "ERROR: $pkg not found"
1204     add_cflags    $(get_safe ${pkg}_cflags)
1205     add_extralibs $(get_safe ${pkg}_libs)
1206 }
1207
1208 require_libfreetype(){
1209     log require_libfreetype "$@"
1210     pkg="freetype2"
1211     check_cmd $pkg_config --exists --print-errors $pkg \
1212       || die "ERROR: $pkg not found"
1213     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1214     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1215     {
1216         echo "#include <ft2build.h>"
1217         echo "#include FT_FREETYPE_H"
1218         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1219         echo "int main(void) { return 0; }"
1220     } | check_ld "cc" $pkg_cflags $pkg_libs \
1221       && set_safe ${pkg}_cflags $pkg_cflags \
1222       && set_safe ${pkg}_libs   $pkg_libs \
1223       || die "ERROR: $pkg not found"
1224     add_cflags    $(get_safe ${pkg}_cflags)
1225     add_extralibs $(get_safe ${pkg}_libs)
1226 }
1227
1228 hostcc_e(){
1229     eval printf '%s\\n' $HOSTCC_E
1230 }
1231
1232 hostcc_o(){
1233     eval printf '%s\\n' $HOSTCC_O
1234 }
1235
1236 check_host_cc(){
1237     log check_host_cc "$@"
1238     cat > $TMPC
1239     log_file $TMPC
1240     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1241 }
1242
1243 check_host_cpp(){
1244     log check_host_cpp "$@"
1245     cat > $TMPC
1246     log_file $TMPC
1247     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1248 }
1249
1250 check_host_cppflags(){
1251     log check_host_cppflags "$@"
1252     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1253 int x;
1254 EOF
1255 }
1256
1257 check_host_cflags(){
1258     log check_host_cflags "$@"
1259     set -- $($host_cflags_filter "$@")
1260     check_host_cc "$@" <<EOF && append host_cflags "$@"
1261 int x;
1262 EOF
1263 }
1264
1265 check_host_cpp_condition(){
1266     log check_host_cpp_condition "$@"
1267     header=$1
1268     condition=$2
1269     shift 2
1270     check_host_cpp "$@" <<EOF
1271 #include <$header>
1272 #if !($condition)
1273 #error "unsatisfied condition: $condition"
1274 #endif
1275 EOF
1276 }
1277
1278 apply(){
1279     file=$1
1280     shift
1281     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1282 }
1283
1284 cp_if_changed(){
1285     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1286     mkdir -p "$(dirname $2)"
1287     $cp_f "$1" "$2"
1288 }
1289
1290 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1291 # system-dependent things.
1292
1293 COMPONENT_LIST="
1294     bsfs
1295     decoders
1296     demuxers
1297     encoders
1298     filters
1299     hwaccels
1300     indevs
1301     muxers
1302     outdevs
1303     parsers
1304     protocols
1305 "
1306
1307 EXAMPLE_LIST="
1308     avio_reading_example
1309     decoding_encoding_example
1310     demuxing_decoding_example
1311     extract_mvs_example
1312     filter_audio_example
1313     filtering_audio_example
1314     filtering_video_example
1315     metadata_example
1316     muxing_example
1317     remuxing_example
1318     resampling_audio_example
1319     scaling_video_example
1320     transcode_aac_example
1321     transcoding_example
1322 "
1323
1324 EXTERNAL_LIBRARY_LIST="
1325     avisynth
1326     bzlib
1327     crystalhd
1328     decklink
1329     frei0r
1330     gnutls
1331     iconv
1332     ladspa
1333     libaacplus
1334     libass
1335     libbluray
1336     libbs2b
1337     libcaca
1338     libcdio
1339     libcelt
1340     libdc1394
1341     libfaac
1342     libfdk_aac
1343     libflite
1344     libfontconfig
1345     libfreetype
1346     libfribidi
1347     libgme
1348     libgsm
1349     libiec61883
1350     libilbc
1351     libmodplug
1352     libmp3lame
1353     libnut
1354     libopencore_amrnb
1355     libopencore_amrwb
1356     libopencv
1357     libopenjpeg
1358     libopus
1359     libpulse
1360     libquvi
1361     librtmp
1362     libschroedinger
1363     libshine
1364     libsmbclient
1365     libsoxr
1366     libspeex
1367     libssh
1368     libstagefright_h264
1369     libtheora
1370     libtwolame
1371     libutvideo
1372     libv4l2
1373     libvidstab
1374     libvo_aacenc
1375     libvo_amrwbenc
1376     libvorbis
1377     libvpx
1378     libwavpack
1379     libwebp
1380     libx264
1381     libx265
1382     libxavs
1383     libxvid
1384     libzmq
1385     libzvbi
1386     lzma
1387     openal
1388     opencl
1389     opengl
1390     openssl
1391     x11grab
1392     xlib
1393     zlib
1394 "
1395
1396 DOCUMENT_LIST="
1397     doc
1398     htmlpages
1399     manpages
1400     podpages
1401     txtpages
1402 "
1403
1404 FEATURE_LIST="
1405     ftrapv
1406     gray
1407     hardcoded_tables
1408     runtime_cpudetect
1409     safe_bitstream_reader
1410     shared
1411     small
1412     static
1413     swscale_alpha
1414 "
1415
1416 HWACCEL_LIST="
1417     dxva2
1418     vaapi
1419     vda
1420     vdpau
1421     xvmc
1422 "
1423
1424 LIBRARY_LIST="
1425     avcodec
1426     avdevice
1427     avfilter
1428     avformat
1429     avresample
1430     avutil
1431     postproc
1432     swresample
1433     swscale
1434 "
1435
1436 LICENSE_LIST="
1437     gpl
1438     nonfree
1439     version3
1440 "
1441
1442 PROGRAM_LIST="
1443     ffplay
1444     ffprobe
1445     ffserver
1446     ffmpeg
1447 "
1448
1449 SUBSYSTEM_LIST="
1450     dct
1451     dwt
1452     error_resilience
1453     faan
1454     fast_unaligned
1455     fft
1456     lsp
1457     lzo
1458     mdct
1459     pixelutils
1460     network
1461     rdft
1462 "
1463
1464 CONFIG_LIST="
1465     $COMPONENT_LIST
1466     $DOCUMENT_LIST
1467     $EXAMPLE_LIST
1468     $EXTERNAL_LIBRARY_LIST
1469     $FEATURE_LIST
1470     $HWACCEL_LIST
1471     $LICENSE_LIST
1472     $LIBRARY_LIST
1473     $PROGRAM_LIST
1474     $SUBSYSTEM_LIST
1475     fontconfig
1476     incompatible_libav_abi
1477     memalign_hack
1478     memory_poisoning
1479     neon_clobber_test
1480     pic
1481     pod2man
1482     raise_major
1483     thumb
1484     xmm_clobber_test
1485 "
1486
1487 THREADS_LIST="
1488     pthreads
1489     os2threads
1490     w32threads
1491 "
1492
1493 ATOMICS_LIST="
1494     atomics_gcc
1495     atomics_suncc
1496     atomics_win32
1497 "
1498
1499 ARCH_LIST="
1500     aarch64
1501     alpha
1502     arm
1503     avr32
1504     avr32_ap
1505     avr32_uc
1506     bfin
1507     ia64
1508     m68k
1509     mips
1510     mips64
1511     parisc
1512     ppc
1513     ppc64
1514     s390
1515     sh4
1516     sparc
1517     sparc64
1518     tilegx
1519     tilepro
1520     tomi
1521     x86
1522     x86_32
1523     x86_64
1524 "
1525
1526 ARCH_EXT_LIST_ARM="
1527     armv5te
1528     armv6
1529     armv6t2
1530     armv8
1531     neon
1532     vfp
1533     vfpv3
1534     setend
1535 "
1536
1537 ARCH_EXT_LIST_MIPS="
1538     mipsfpu
1539     mips32r2
1540     mipsdspr1
1541     mipsdspr2
1542 "
1543
1544 ARCH_EXT_LIST_X86_SIMD="
1545     amd3dnow
1546     amd3dnowext
1547     avx
1548     avx2
1549     fma3
1550     fma4
1551     mmx
1552     mmxext
1553     sse
1554     sse2
1555     sse3
1556     sse4
1557     sse42
1558     ssse3
1559     xop
1560 "
1561
1562 ARCH_EXT_LIST_PPC="
1563     altivec
1564     dcbzl
1565     ldbrx
1566     ppc4xx
1567     vsx
1568 "
1569
1570 ARCH_EXT_LIST_X86="
1571     $ARCH_EXT_LIST_X86_SIMD
1572     cpunop
1573     i686
1574 "
1575
1576 ARCH_EXT_LIST="
1577     $ARCH_EXT_LIST_ARM
1578     $ARCH_EXT_LIST_PPC
1579     $ARCH_EXT_LIST_X86
1580     $ARCH_EXT_LIST_MIPS
1581     loongson
1582 "
1583
1584 ARCH_FEATURES="
1585     aligned_stack
1586     fast_64bit
1587     fast_clz
1588     fast_cmov
1589     local_aligned_8
1590     local_aligned_16
1591     local_aligned_32
1592     simd_align_16
1593 "
1594
1595 BUILTIN_LIST="
1596     atomic_cas_ptr
1597     machine_rw_barrier
1598     MemoryBarrier
1599     mm_empty
1600     rdtsc
1601     sarestart
1602     sync_val_compare_and_swap
1603 "
1604 HAVE_LIST_CMDLINE="
1605     inline_asm
1606     symver
1607     yasm
1608 "
1609
1610 HAVE_LIST_PUB="
1611     bigendian
1612     fast_unaligned
1613     incompatible_libav_abi
1614 "
1615
1616 HEADERS_LIST="
1617     alsa_asoundlib_h
1618     altivec_h
1619     arpa_inet_h
1620     asm_types_h
1621     cdio_paranoia_h
1622     cdio_paranoia_paranoia_h
1623     CL_cl_h
1624     dev_bktr_ioctl_bt848_h
1625     dev_bktr_ioctl_meteor_h
1626     dev_ic_bt8xx_h
1627     dev_video_bktr_ioctl_bt848_h
1628     dev_video_meteor_ioctl_meteor_h
1629     direct_h
1630     dlfcn_h
1631     dxva_h
1632     ES2_gl_h
1633     gsm_h
1634     io_h
1635     mach_mach_time_h
1636     machine_ioctl_bt848_h
1637     machine_ioctl_meteor_h
1638     malloc_h
1639     openjpeg_1_5_openjpeg_h
1640     OpenGL_gl3_h
1641     poll_h
1642     sndio_h
1643     soundcard_h
1644     sys_mman_h
1645     sys_param_h
1646     sys_resource_h
1647     sys_select_h
1648     sys_soundcard_h
1649     sys_time_h
1650     sys_un_h
1651     sys_videoio_h
1652     termios_h
1653     unistd_h
1654     windows_h
1655     winsock2_h
1656 "
1657
1658 INTRINSICS_LIST="
1659     intrinsics_neon
1660 "
1661
1662 MATH_FUNCS="
1663     atanf
1664     atan2f
1665     cbrt
1666     cbrtf
1667     cosf
1668     exp2
1669     exp2f
1670     expf
1671     fminf
1672     isinf
1673     isnan
1674     ldexpf
1675     llrint
1676     llrintf
1677     log2
1678     log2f
1679     log10f
1680     lrint
1681     lrintf
1682     powf
1683     rint
1684     round
1685     roundf
1686     sinf
1687     trunc
1688     truncf
1689 "
1690
1691 SYSTEM_FUNCS="
1692     access
1693     aligned_malloc
1694     clock_gettime
1695     closesocket
1696     CommandLineToArgvW
1697     CoTaskMemFree
1698     CryptGenRandom
1699     dlopen
1700     fcntl
1701     flt_lim
1702     fork
1703     getaddrinfo
1704     gethrtime
1705     getopt
1706     GetProcessAffinityMask
1707     GetProcessMemoryInfo
1708     GetProcessTimes
1709     getrusage
1710     getservbyport
1711     GetSystemTimeAsFileTime
1712     gettimeofday
1713     glob
1714     glXGetProcAddress
1715     inet_aton
1716     isatty
1717     jack_port_get_latency_range
1718     kbhit
1719     localtime_r
1720     lzo1x_999_compress
1721     mach_absolute_time
1722     MapViewOfFile
1723     memalign
1724     mkstemp
1725     mmap
1726     mprotect
1727     nanosleep
1728     PeekNamedPipe
1729     posix_memalign
1730     pthread_cancel
1731     sched_getaffinity
1732     SetConsoleTextAttribute
1733     setmode
1734     setrlimit
1735     Sleep
1736     strerror_r
1737     sysconf
1738     sysctl
1739     usleep
1740     VirtualAlloc
1741     wglGetProcAddress
1742 "
1743
1744 TOOLCHAIN_FEATURES="
1745     as_dn_directive
1746     as_func
1747     asm_mod_q
1748     attribute_may_alias
1749     attribute_packed
1750     ebp_available
1751     ebx_available
1752     gnu_as
1753     gnu_windres
1754     ibm_asm
1755     inline_asm_labels
1756     inline_asm_nonlocal_labels
1757     inline_asm_direct_symbol_refs
1758     pragma_deprecated
1759     rsync_contimeout
1760     symver_asm_label
1761     symver_gnu_asm
1762     vfp_args
1763     xform_asm
1764     xmm_clobbers
1765 "
1766
1767 TYPES_LIST="
1768     socklen_t
1769     struct_addrinfo
1770     struct_group_source_req
1771     struct_ip_mreq_source
1772     struct_ipv6_mreq
1773     struct_pollfd
1774     struct_rusage_ru_maxrss
1775     struct_sctp_event_subscribe
1776     struct_sockaddr_in6
1777     struct_sockaddr_sa_len
1778     struct_sockaddr_storage
1779     struct_stat_st_mtim_tv_nsec
1780     struct_v4l2_frmivalenum_discrete
1781 "
1782
1783 HAVE_LIST="
1784     $ARCH_EXT_LIST
1785     $(add_suffix _external $ARCH_EXT_LIST)
1786     $(add_suffix _inline   $ARCH_EXT_LIST)
1787     $ARCH_FEATURES
1788     $ATOMICS_LIST
1789     $BUILTIN_LIST
1790     $HAVE_LIST_CMDLINE
1791     $HAVE_LIST_PUB
1792     $HEADERS_LIST
1793     $INTRINSICS_LIST
1794     $MATH_FUNCS
1795     $SYSTEM_FUNCS
1796     $THREADS_LIST
1797     $TOOLCHAIN_FEATURES
1798     $TYPES_LIST
1799     atomics_native
1800     dos_paths
1801     dxva2api_cobj
1802     dxva2_lib
1803     libc_msvcrt
1804     libdc1394_1
1805     libdc1394_2
1806     makeinfo
1807     makeinfo_html
1808     perl
1809     pod2man
1810     sdl
1811     texi2html
1812     threads
1813     vdpau_x11
1814     xlib
1815 "
1816
1817 # options emitted with CONFIG_ prefix but not available on the command line
1818 CONFIG_EXTRA="
1819     aandcttables
1820     ac3dsp
1821     audio_frame_queue
1822     audiodsp
1823     blockdsp
1824     bswapdsp
1825     cabac
1826     dvprofile
1827     exif
1828     faandct
1829     faanidct
1830     fdctdsp
1831     frame_thread_encoder
1832     gcrypt
1833     golomb
1834     gplv3
1835     h263dsp
1836     h264chroma
1837     h264dsp
1838     h264pred
1839     h264qpel
1840     hpeldsp
1841     huffman
1842     huffyuvdsp
1843     huffyuvencdsp
1844     idctdsp
1845     iirfilter
1846     intrax8
1847     lgplv3
1848     llauddsp
1849     llviddsp
1850     lpc
1851     me_cmp
1852     mpeg_er
1853     mpegaudio
1854     mpegaudiodsp
1855     mpegvideo
1856     mpegvideoenc
1857     nettle
1858     pixblockdsp
1859     qpeldsp
1860     rangecoder
1861     riffdec
1862     riffenc
1863     rtpdec
1864     rtpenc_chain
1865     sinewin
1866     startcode
1867     tpeldsp
1868     videodsp
1869     vp3dsp
1870     wma_freqs
1871 "
1872
1873 CMDLINE_SELECT="
1874     $ARCH_EXT_LIST
1875     $CONFIG_LIST
1876     $HAVE_LIST_CMDLINE
1877     $THREADS_LIST
1878     asm
1879     cross_compile
1880     debug
1881     extra_warnings
1882     logging
1883     lto
1884     optimizations
1885     rpath
1886     stripping
1887 "
1888
1889 PATHS_LIST="
1890     bindir
1891     datadir
1892     docdir
1893     incdir
1894     libdir
1895     mandir
1896     prefix
1897     shlibdir
1898 "
1899
1900 CMDLINE_SET="
1901     $PATHS_LIST
1902     ar
1903     arch
1904     as
1905     assert_level
1906     build_suffix
1907     cc
1908     cpu
1909     cross_prefix
1910     cxx
1911     dep_cc
1912     doxygen
1913     extra_version
1914     gas
1915     host_cc
1916     host_cflags
1917     host_ld
1918     host_ldflags
1919     host_libs
1920     host_os
1921     install
1922     ld
1923     logfile
1924     malloc_prefix
1925     nm
1926     optflags
1927     pkg_config
1928     pkg_config_flags
1929     progs_suffix
1930     random_seed
1931     ranlib
1932     samples
1933     strip
1934     sws_max_filter_size
1935     sysinclude
1936     sysroot
1937     target_exec
1938     target_os
1939     target_path
1940     target_samples
1941     tempprefix
1942     toolchain
1943     valgrind
1944     yasmexe
1945 "
1946
1947 CMDLINE_APPEND="
1948     extra_cflags
1949     extra_cxxflags
1950     host_cppflags
1951 "
1952
1953 # code dependency declarations
1954
1955 # architecture extensions
1956
1957 armv5te_deps="arm"
1958 armv6_deps="arm"
1959 armv6t2_deps="arm"
1960 armv8_deps="aarch64"
1961 neon_deps_any="aarch64 arm"
1962 intrinsics_neon_deps="neon"
1963 vfp_deps_any="aarch64 arm"
1964 vfpv3_deps="vfp"
1965 setend_deps="arm"
1966
1967 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1968
1969 mipsfpu_deps="mips"
1970 mips32r2_deps="mips"
1971 mipsdspr1_deps="mips"
1972 mipsdspr2_deps="mips"
1973
1974 altivec_deps="ppc"
1975 ppc4xx_deps="ppc"
1976 vsx_deps="ppc"
1977
1978 cpunop_deps="i686"
1979 x86_64_select="i686"
1980 x86_64_suggest="fast_cmov"
1981
1982 amd3dnow_deps="mmx"
1983 amd3dnowext_deps="amd3dnow"
1984 i686_deps="x86"
1985 mmx_deps="x86"
1986 mmxext_deps="mmx"
1987 sse_deps="mmxext"
1988 sse2_deps="sse"
1989 sse3_deps="sse2"
1990 ssse3_deps="sse3"
1991 sse4_deps="ssse3"
1992 sse42_deps="sse4"
1993 avx_deps="sse42"
1994 xop_deps="avx"
1995 fma3_deps="avx"
1996 fma4_deps="avx"
1997 avx2_deps="avx"
1998
1999 mmx_external_deps="yasm"
2000 mmx_inline_deps="inline_asm"
2001 mmx_suggest="mmx_external mmx_inline"
2002
2003 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2004     eval dep=\$${ext}_deps
2005     eval ${ext}_external_deps='"${dep}_external"'
2006     eval ${ext}_inline_deps='"${dep}_inline"'
2007     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2008 done
2009
2010 aligned_stack_if_any="aarch64 ppc x86"
2011 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2012 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2013 fast_unaligned_if_any="aarch64 ppc x86"
2014 simd_align_16_if_any="altivec neon sse"
2015
2016 # system capabilities
2017
2018 symver_if_any="symver_asm_label symver_gnu_asm"
2019
2020 # threading support
2021 atomics_gcc_if="sync_val_compare_and_swap"
2022 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2023 atomics_win32_if="MemoryBarrier"
2024 atomics_native_if_any="$ATOMICS_LIST"
2025 w32threads_deps="atomics_native"
2026 threads_if_any="$THREADS_LIST"
2027
2028 # subsystems
2029 dct_select="rdft"
2030 error_resilience_select="me_cmp"
2031 faandct_deps="faan fdctdsp"
2032 faanidct_deps="faan idctdsp"
2033 frame_thread_encoder_deps="encoders threads"
2034 intrax8_select="error_resilience"
2035 mdct_select="fft"
2036 rdft_select="fft"
2037 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2038 mpeg_er_select="error_resilience"
2039 mpegaudio_select="mpegaudiodsp"
2040 mpegaudiodsp_select="dct"
2041 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp videodsp"
2042 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2043
2044 # decoders / encoders
2045 aac_decoder_select="mdct sinewin"
2046 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
2047 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2048 ac3_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2049 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2050 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2051 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2052 aic_decoder_select="golomb idctdsp"
2053 alac_encoder_select="lpc"
2054 als_decoder_select="bswapdsp"
2055 amrnb_decoder_select="lsp"
2056 amrwb_decoder_select="lsp"
2057 amv_decoder_select="sp5x_decoder exif"
2058 amv_encoder_select="aandcttables mpegvideoenc"
2059 ape_decoder_select="bswapdsp llauddsp"
2060 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2061 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2062 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2063 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2064 atrac1_decoder_select="mdct sinewin"
2065 atrac3_decoder_select="mdct"
2066 atrac3p_decoder_select="mdct sinewin"
2067 avrn_decoder_select="exif"
2068 bink_decoder_select="blockdsp hpeldsp"
2069 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2070 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2071 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2072 cllc_decoder_select="bswapdsp"
2073 comfortnoise_encoder_select="lpc"
2074 cook_decoder_select="audiodsp mdct sinewin"
2075 cscd_decoder_select="lzo"
2076 cscd_decoder_suggest="zlib"
2077 dca_decoder_select="mdct"
2078 dirac_decoder_select="dwt golomb videodsp mpegvideoenc"
2079 dnxhd_decoder_select="blockdsp idctdsp"
2080 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2081 dvvideo_decoder_select="dvprofile idctdsp"
2082 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2083 dxa_decoder_select="zlib"
2084 eac3_decoder_select="ac3_decoder"
2085 eac3_encoder_select="ac3_encoder"
2086 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2087 eatgq_decoder_select="aandcttables"
2088 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2089 exr_decoder_select="zlib"
2090 ffv1_decoder_select="golomb rangecoder"
2091 ffv1_encoder_select="rangecoder"
2092 ffvhuff_decoder_select="huffyuv_decoder"
2093 ffvhuff_encoder_select="huffyuv_encoder"
2094 fic_decoder_select="golomb"
2095 flac_decoder_select="golomb"
2096 flac_encoder_select="bswapdsp golomb lpc"
2097 flashsv_decoder_select="zlib"
2098 flashsv_encoder_select="zlib"
2099 flashsv2_encoder_select="zlib"
2100 flashsv2_decoder_select="zlib"
2101 flv_decoder_select="h263_decoder"
2102 flv_encoder_select="h263_encoder"
2103 fourxm_decoder_select="blockdsp bswapdsp"
2104 fraps_decoder_select="bswapdsp huffman"
2105 g2m_decoder_select="blockdsp idctdsp zlib"
2106 g729_decoder_select="audiodsp"
2107 h261_decoder_select="mpeg_er mpegvideo"
2108 h261_encoder_select="aandcttables mpegvideoenc"
2109 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2110 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2111 h263i_decoder_select="h263_decoder"
2112 h263p_encoder_select="h263_encoder"
2113 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2114 h264_decoder_suggest="error_resilience"
2115 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2116 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2117 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2118 iac_decoder_select="imc_decoder"
2119 imc_decoder_select="bswapdsp fft mdct sinewin"
2120 indeo3_decoder_select="hpeldsp"
2121 interplay_video_decoder_select="hpeldsp"
2122 jpegls_decoder_select="golomb mjpeg_decoder"
2123 jpegls_encoder_select="golomb"
2124 jv_decoder_select="blockdsp"
2125 lagarith_decoder_select="huffyuvdsp"
2126 ljpeg_encoder_select="aandcttables idctdsp"
2127 loco_decoder_select="golomb"
2128 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2129 metasound_decoder_select="lsp mdct sinewin"
2130 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2131 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp"
2132 mjpeg_encoder_select="aandcttables mpegvideoenc"
2133 mjpegb_decoder_select="mjpeg_decoder"
2134 mlp_decoder_select="mlp_parser"
2135 motionpixels_decoder_select="bswapdsp"
2136 mp1_decoder_select="mpegaudio"
2137 mp1float_decoder_select="mpegaudio"
2138 mp2_decoder_select="mpegaudio"
2139 mp2float_decoder_select="mpegaudio"
2140 mp3_decoder_select="mpegaudio"
2141 mp3adu_decoder_select="mpegaudio"
2142 mp3adufloat_decoder_select="mpegaudio"
2143 mp3float_decoder_select="mpegaudio"
2144 mp3on4_decoder_select="mpegaudio"
2145 mp3on4float_decoder_select="mpegaudio"
2146 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2147 mpc8_decoder_select="mpegaudiodsp"
2148 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2149 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2150 mpegvideo_decoder_select="error_resilience mpeg_er mpegvideo"
2151 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2152 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2153 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2154 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2155 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2156 mpeg4_encoder_select="h263_encoder"
2157 msmpeg4v1_decoder_select="h263_decoder"
2158 msmpeg4v2_decoder_select="h263_decoder"
2159 msmpeg4v2_encoder_select="h263_encoder"
2160 msmpeg4v3_decoder_select="h263_decoder"
2161 msmpeg4v3_encoder_select="h263_encoder"
2162 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
2163 mxpeg_decoder_select="mjpeg_decoder"
2164 nellymoser_decoder_select="mdct sinewin"
2165 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2166 nuv_decoder_select="idctdsp lzo"
2167 on2avc_decoder_select="mdct"
2168 opus_decoder_deps="swresample"
2169 png_decoder_select="zlib"
2170 png_encoder_select="huffyuvencdsp zlib"
2171 prores_decoder_select="blockdsp idctdsp"
2172 prores_encoder_select="fdctdsp"
2173 qcelp_decoder_select="lsp"
2174 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2175 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2176 ra_144_decoder_select="audiodsp"
2177 ralf_decoder_select="golomb"
2178 rawvideo_decoder_select="bswapdsp"
2179 rtjpeg_decoder_select="me_cmp"
2180 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2181 rv10_encoder_select="h263_encoder"
2182 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2183 rv20_encoder_select="h263_encoder"
2184 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2185 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2186 shorten_decoder_select="golomb"
2187 sipr_decoder_select="lsp"
2188 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2189 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2190 sonic_decoder_select="golomb rangecoder"
2191 sonic_encoder_select="golomb rangecoder"
2192 sonic_ls_encoder_select="golomb rangecoder"
2193 sp5x_decoder_select="mjpeg_decoder"
2194 svq1_decoder_select="hpeldsp"
2195 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2196 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2197 svq3_decoder_suggest="zlib"
2198 tak_decoder_select="audiodsp"
2199 theora_decoder_select="vp3_decoder"
2200 thp_decoder_select="mjpeg_decoder"
2201 tiff_decoder_suggest="zlib lzma"
2202 tiff_encoder_suggest="zlib"
2203 truehd_decoder_select="mlp_parser"
2204 truemotion2_decoder_select="bswapdsp"
2205 truespeech_decoder_select="bswapdsp"
2206 tscc_decoder_select="zlib"
2207 twinvq_decoder_select="mdct lsp sinewin"
2208 utvideo_decoder_select="bswapdsp"
2209 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2210 vble_decoder_select="huffyuvdsp"
2211 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
2212 vc1image_decoder_select="vc1_decoder"
2213 vorbis_decoder_select="mdct"
2214 vorbis_encoder_select="mdct"
2215 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2216 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2217 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2218 vp6a_decoder_select="vp6_decoder"
2219 vp6f_decoder_select="vp6_decoder"
2220 vp7_decoder_select="h264pred videodsp"
2221 vp8_decoder_select="h264pred videodsp"
2222 vp9_decoder_select="videodsp vp9_parser"
2223 webp_decoder_select="vp8_decoder"
2224 wmalossless_decoder_select="llauddsp"
2225 wmapro_decoder_select="mdct sinewin wma_freqs"
2226 wmav1_decoder_select="mdct sinewin wma_freqs"
2227 wmav1_encoder_select="mdct sinewin wma_freqs"
2228 wmav2_decoder_select="mdct sinewin wma_freqs"
2229 wmav2_encoder_select="mdct sinewin wma_freqs"
2230 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2231 wmv1_decoder_select="h263_decoder"
2232 wmv1_encoder_select="h263_encoder"
2233 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
2234 wmv2_encoder_select="h263_encoder"
2235 wmv3_decoder_select="vc1_decoder"
2236 wmv3image_decoder_select="wmv3_decoder"
2237 zerocodec_decoder_select="zlib"
2238 zlib_decoder_select="zlib"
2239 zlib_encoder_select="zlib"
2240 zmbv_decoder_select="zlib"
2241 zmbv_encoder_select="zlib"
2242
2243 # hardware accelerators
2244 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2245 dxva2_deps="dxva2api_h"
2246 vaapi_deps="va_va_h"
2247 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2248 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2249 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2250 xvmc_deps="X11_extensions_XvMClib_h"
2251
2252 h263_vaapi_hwaccel_deps="vaapi"
2253 h263_vaapi_hwaccel_select="h263_decoder"
2254 h263_vdpau_hwaccel_deps="vdpau"
2255 h263_vdpau_hwaccel_select="h263_decoder"
2256 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2257 h264_dxva2_hwaccel_deps="dxva2"
2258 h264_dxva2_hwaccel_select="h264_decoder"
2259 h264_vaapi_hwaccel_deps="vaapi"
2260 h264_vaapi_hwaccel_select="h264_decoder"
2261 h264_vda_decoder_deps="vda"
2262 h264_vda_decoder_select="h264_decoder"
2263 h264_vda_hwaccel_deps="vda"
2264 h264_vda_hwaccel_select="h264_decoder"
2265 h264_vda_old_hwaccel_deps="vda"
2266 h264_vda_old_hwaccel_select="h264_decoder"
2267 h264_vdpau_decoder_deps="vdpau"
2268 h264_vdpau_decoder_select="h264_decoder"
2269 h264_vdpau_hwaccel_deps="vdpau"
2270 h264_vdpau_hwaccel_select="h264_decoder"
2271 mpeg_vdpau_decoder_deps="vdpau"
2272 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2273 mpeg_xvmc_hwaccel_deps="xvmc"
2274 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2275 mpeg1_vdpau_decoder_deps="vdpau"
2276 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2277 mpeg1_vdpau_hwaccel_deps="vdpau"
2278 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2279 mpeg1_xvmc_hwaccel_deps="xvmc"
2280 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2281 mpeg2_crystalhd_decoder_select="crystalhd"
2282 mpeg2_dxva2_hwaccel_deps="dxva2"
2283 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2284 mpeg2_vaapi_hwaccel_deps="vaapi"
2285 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2286 mpeg2_vdpau_hwaccel_deps="vdpau"
2287 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2288 mpeg2_xvmc_hwaccel_deps="xvmc"
2289 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2290 mpeg4_crystalhd_decoder_select="crystalhd"
2291 mpeg4_vaapi_hwaccel_deps="vaapi"
2292 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2293 mpeg4_vdpau_decoder_deps="vdpau"
2294 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2295 mpeg4_vdpau_hwaccel_deps="vdpau"
2296 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2297 msmpeg4_crystalhd_decoder_select="crystalhd"
2298 vc1_crystalhd_decoder_select="crystalhd"
2299 vc1_dxva2_hwaccel_deps="dxva2"
2300 vc1_dxva2_hwaccel_select="vc1_decoder"
2301 vc1_vaapi_hwaccel_deps="vaapi"
2302 vc1_vaapi_hwaccel_select="vc1_decoder"
2303 vc1_vdpau_decoder_deps="vdpau"
2304 vc1_vdpau_decoder_select="vc1_decoder"
2305 vc1_vdpau_hwaccel_deps="vdpau"
2306 vc1_vdpau_hwaccel_select="vc1_decoder"
2307 wmv3_crystalhd_decoder_select="crystalhd"
2308 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2309 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2310 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2311 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2312
2313 # parsers
2314 h264_parser_select="h264_decoder"
2315 hevc_parser_select="hevc_decoder"
2316 mpegvideo_parser_select="mpegvideo"
2317 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2318 vc1_parser_select="mpegvideo startcode vc1_decoder"
2319
2320 # external libraries
2321 libaacplus_encoder_deps="libaacplus"
2322 libcelt_decoder_deps="libcelt"
2323 libfaac_encoder_deps="libfaac"
2324 libfaac_encoder_select="audio_frame_queue"
2325 libfdk_aac_decoder_deps="libfdk_aac"
2326 libfdk_aac_encoder_deps="libfdk_aac"
2327 libfdk_aac_encoder_select="audio_frame_queue"
2328 libgme_demuxer_deps="libgme"
2329 libgsm_decoder_deps="libgsm"
2330 libgsm_encoder_deps="libgsm"
2331 libgsm_ms_decoder_deps="libgsm"
2332 libgsm_ms_encoder_deps="libgsm"
2333 libilbc_decoder_deps="libilbc"
2334 libilbc_encoder_deps="libilbc"
2335 libmodplug_demuxer_deps="libmodplug"
2336 libmp3lame_encoder_deps="libmp3lame"
2337 libmp3lame_encoder_select="audio_frame_queue"
2338 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2339 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2340 libopencore_amrnb_encoder_select="audio_frame_queue"
2341 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2342 libopenjpeg_decoder_deps="libopenjpeg"
2343 libopenjpeg_encoder_deps="libopenjpeg"
2344 libopus_decoder_deps="libopus"
2345 libopus_encoder_deps="libopus"
2346 libopus_encoder_select="audio_frame_queue"
2347 libquvi_demuxer_deps="libquvi"
2348 libschroedinger_decoder_deps="libschroedinger"
2349 libschroedinger_encoder_deps="libschroedinger"
2350 libshine_encoder_deps="libshine"
2351 libshine_encoder_select="audio_frame_queue"
2352 libspeex_decoder_deps="libspeex"
2353 libspeex_encoder_deps="libspeex"
2354 libspeex_encoder_select="audio_frame_queue"
2355 libstagefright_h264_decoder_deps="libstagefright_h264"
2356 libtheora_encoder_deps="libtheora"
2357 libtwolame_encoder_deps="libtwolame"
2358 libvo_aacenc_encoder_deps="libvo_aacenc"
2359 libvo_aacenc_encoder_select="audio_frame_queue"
2360 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2361 libvorbis_decoder_deps="libvorbis"
2362 libvorbis_encoder_deps="libvorbis"
2363 libvorbis_encoder_select="audio_frame_queue"
2364 libvpx_vp8_decoder_deps="libvpx"
2365 libvpx_vp8_encoder_deps="libvpx"
2366 libvpx_vp9_decoder_deps="libvpx"
2367 libvpx_vp9_encoder_deps="libvpx"
2368 libwavpack_encoder_deps="libwavpack"
2369 libwebp_encoder_deps="libwebp"
2370 libx264_encoder_deps="libx264"
2371 libx264rgb_encoder_deps="libx264"
2372 libx265_encoder_deps="libx265"
2373 libxavs_encoder_deps="libxavs"
2374 libxvid_encoder_deps="libxvid"
2375 libutvideo_decoder_deps="libutvideo"
2376 libutvideo_encoder_deps="libutvideo"
2377 libzvbi_teletext_decoder_deps="libzvbi"
2378
2379 # demuxers / muxers
2380 ac3_demuxer_select="ac3_parser"
2381 asf_demuxer_select="riffdec"
2382 asf_muxer_select="riffenc"
2383 asf_stream_muxer_select="asf_muxer"
2384 avi_demuxer_select="riffdec exif"
2385 avi_muxer_select="riffenc"
2386 avisynth_demuxer_deps="avisynth"
2387 avisynth_demuxer_select="riffdec"
2388 caf_demuxer_select="riffdec"
2389 dirac_demuxer_select="dirac_parser"
2390 dts_demuxer_select="dca_parser"
2391 dtshd_demuxer_select="dca_parser"
2392 dv_demuxer_select="dvprofile"
2393 dv_muxer_select="dvprofile"
2394 dxa_demuxer_select="riffdec"
2395 eac3_demuxer_select="ac3_parser"
2396 f4v_muxer_select="mov_muxer"
2397 flac_demuxer_select="flac_parser"
2398 hds_muxer_select="flv_muxer"
2399 hls_muxer_select="mpegts_muxer"
2400 image2_alias_pix_demuxer_select="image2_demuxer"
2401 image2_brender_pix_demuxer_select="image2_demuxer"
2402 ipod_muxer_select="mov_muxer"
2403 ismv_muxer_select="mov_muxer"
2404 libnut_demuxer_deps="libnut"
2405 libnut_muxer_deps="libnut"
2406 matroska_audio_muxer_select="matroska_muxer"
2407 matroska_demuxer_select="riffdec"
2408 matroska_demuxer_suggest="bzlib lzo zlib"
2409 matroska_muxer_select="riffenc"
2410 mmf_muxer_select="riffenc"
2411 mov_demuxer_select="riffdec"
2412 mov_demuxer_suggest="zlib"
2413 mov_muxer_select="riffenc rtpenc_chain"
2414 mp3_demuxer_select="mpegaudio_parser"
2415 mp4_muxer_select="mov_muxer"
2416 mpegts_muxer_select="adts_muxer latm_muxer"
2417 mpegtsraw_demuxer_select="mpegts_demuxer"
2418 mxf_d10_muxer_select="mxf_muxer"
2419 nut_muxer_select="riffenc"
2420 nuv_demuxer_select="riffdec"
2421 oga_muxer_select="ogg_muxer"
2422 ogg_demuxer_select="golomb"
2423 opus_muxer_select="ogg_muxer"
2424 psp_muxer_select="mov_muxer"
2425 rtp_demuxer_select="sdp_demuxer"
2426 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2427 rtsp_demuxer_select="http_protocol rtpdec"
2428 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2429 sap_demuxer_select="sdp_demuxer"
2430 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2431 sdp_demuxer_select="rtpdec"
2432 smoothstreaming_muxer_select="ismv_muxer"
2433 spdif_muxer_select="aac_parser"
2434 spx_muxer_select="ogg_muxer"
2435 tak_demuxer_select="tak_parser"
2436 tg2_muxer_select="mov_muxer"
2437 tgp_muxer_select="mov_muxer"
2438 vobsub_demuxer_select="mpegps_demuxer"
2439 w64_demuxer_select="wav_demuxer"
2440 w64_muxer_select="wav_muxer"
2441 wav_demuxer_select="riffdec"
2442 wav_muxer_select="riffenc"
2443 webm_muxer_select="riffenc"
2444 wtv_demuxer_select="riffdec"
2445 wtv_muxer_select="riffenc"
2446 xmv_demuxer_select="riffdec"
2447 xwma_demuxer_select="riffdec"
2448
2449 # indevs / outdevs
2450 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2451 alsa_outdev_deps="alsa_asoundlib_h"
2452 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2453 avfoundation_indev_select="avfoundation"
2454 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2455 caca_outdev_deps="libcaca"
2456 decklink_outdev_deps="decklink pthreads"
2457 decklink_outdev_extralibs="-lstdc++"
2458 dshow_indev_deps="IBaseFilter"
2459 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2460 dv1394_indev_deps="dv1394"
2461 dv1394_indev_select="dv_demuxer"
2462 fbdev_indev_deps="linux_fb_h"
2463 fbdev_outdev_deps="linux_fb_h"
2464 gdigrab_indev_deps="CreateDIBSection"
2465 gdigrab_indev_extralibs="-lgdi32"
2466 gdigrab_indev_select="bmp_decoder"
2467 iec61883_indev_deps="libiec61883"
2468 jack_indev_deps="jack_jack_h sem_timedwait"
2469 lavfi_indev_deps="avfilter"
2470 libcdio_indev_deps="libcdio"
2471 libdc1394_indev_deps="libdc1394"
2472 libv4l2_indev_deps="libv4l2"
2473 openal_indev_deps="openal"
2474 opengl_outdev_deps="opengl"
2475 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2476 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2477 pulse_indev_deps="libpulse"
2478 pulse_outdev_deps="libpulse"
2479 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2480 qtkit_indev_select="qtkit"
2481 sdl_outdev_deps="sdl"
2482 sndio_indev_deps="sndio_h"
2483 sndio_outdev_deps="sndio_h"
2484 v4l_indev_deps="linux_videodev_h"
2485 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2486 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2487 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2488 vfwcap_indev_extralibs="-lavicap32"
2489 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2490 xv_outdev_extralibs="-lXv -lX11 -lXext"
2491 x11grab_indev_deps="x11grab"
2492
2493 # protocols
2494 bluray_protocol_deps="libbluray"
2495 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2496 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2497 ffrtmpcrypt_protocol_select="tcp_protocol"
2498 ffrtmphttp_protocol_deps="!librtmp_protocol"
2499 ffrtmphttp_protocol_select="http_protocol"
2500 ftp_protocol_select="tcp_protocol"
2501 gopher_protocol_select="network"
2502 http_protocol_select="tcp_protocol"
2503 httpproxy_protocol_select="tcp_protocol"
2504 https_protocol_select="tls_protocol"
2505 icecast_protocol_select="http_protocol"
2506 librtmp_protocol_deps="librtmp"
2507 librtmpe_protocol_deps="librtmp"
2508 librtmps_protocol_deps="librtmp"
2509 librtmpt_protocol_deps="librtmp"
2510 librtmpte_protocol_deps="librtmp"
2511 libsmbclient_protocol_deps="libsmbclient gplv3"
2512 libssh_protocol_deps="libssh"
2513 mmsh_protocol_select="http_protocol"
2514 mmst_protocol_select="network"
2515 rtmp_protocol_deps="!librtmp_protocol"
2516 rtmp_protocol_select="tcp_protocol"
2517 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2518 rtmps_protocol_deps="!librtmp_protocol"
2519 rtmps_protocol_select="tls_protocol"
2520 rtmpt_protocol_select="ffrtmphttp_protocol"
2521 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2522 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2523 rtp_protocol_select="udp_protocol"
2524 sctp_protocol_deps="struct_sctp_event_subscribe"
2525 sctp_protocol_select="network"
2526 srtp_protocol_select="rtp_protocol"
2527 tcp_protocol_select="network"
2528 tls_protocol_deps_any="openssl gnutls"
2529 tls_protocol_select="tcp_protocol"
2530 udp_protocol_select="network"
2531 unix_protocol_deps="sys_un_h"
2532 unix_protocol_select="network"
2533
2534 # filters
2535 amovie_filter_deps="avcodec avformat"
2536 aresample_filter_deps="swresample"
2537 ass_filter_deps="libass"
2538 asyncts_filter_deps="avresample"
2539 atempo_filter_deps="avcodec"
2540 atempo_filter_select="rdft"
2541 azmq_filter_deps="libzmq"
2542 blackframe_filter_deps="gpl"
2543 boxblur_filter_deps="gpl"
2544 bs2b_filter_deps="libbs2b"
2545 colormatrix_filter_deps="gpl"
2546 cropdetect_filter_deps="gpl"
2547 delogo_filter_deps="gpl"
2548 deshake_filter_select="pixelutils"
2549 drawtext_filter_deps="libfreetype"
2550 ebur128_filter_deps="gpl"
2551 flite_filter_deps="libflite"
2552 frei0r_filter_deps="frei0r dlopen"
2553 frei0r_filter_extralibs='$ldl'
2554 frei0r_src_filter_deps="frei0r dlopen"
2555 frei0r_src_filter_extralibs='$ldl'
2556 geq_filter_deps="gpl"
2557 histeq_filter_deps="gpl"
2558 hqdn3d_filter_deps="gpl"
2559 interlace_filter_deps="gpl"
2560 kerndeint_filter_deps="gpl"
2561 ladspa_filter_deps="ladspa dlopen"
2562 ladspa_filter_extralibs='$ldl'
2563 mcdeint_filter_deps="avcodec gpl"
2564 movie_filter_deps="avcodec avformat"
2565 mp_filter_deps="gpl avcodec swscale inline_asm"
2566 mpdecimate_filter_deps="gpl"
2567 mpdecimate_filter_select="pixelutils"
2568 mptestsrc_filter_deps="gpl"
2569 negate_filter_deps="lut_filter"
2570 perspective_filter_deps="gpl"
2571 ocv_filter_deps="libopencv"
2572 owdenoise_filter_deps="gpl"
2573 pan_filter_deps="swresample"
2574 phase_filter_deps="gpl"
2575 pp_filter_deps="gpl postproc"
2576 pullup_filter_deps="gpl"
2577 removelogo_filter_deps="avcodec avformat swscale"
2578 resample_filter_deps="avresample"
2579 sab_filter_deps="gpl swscale"
2580 scale_filter_deps="swscale"
2581 select_filter_select="pixelutils"
2582 smartblur_filter_deps="gpl swscale"
2583 showspectrum_filter_deps="avcodec"
2584 showspectrum_filter_select="rdft"
2585 spp_filter_deps="gpl avcodec"
2586 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2587 stereo3d_filter_deps="gpl"
2588 subtitles_filter_deps="avformat avcodec libass"
2589 super2xsai_filter_deps="gpl"
2590 tinterlace_filter_deps="gpl"
2591 vidstabdetect_filter_deps="libvidstab"
2592 vidstabtransform_filter_deps="libvidstab"
2593 pixfmts_super2xsai_test_deps="super2xsai_filter"
2594 tinterlace_merge_test_deps="tinterlace_filter"
2595 tinterlace_pad_test_deps="tinterlace_filter"
2596 zmq_filter_deps="libzmq"
2597 zoompan_filter_deps="swscale"
2598
2599 # examples
2600 avio_reading="avformat avcodec avutil"
2601 avcodec_example_deps="avcodec avutil"
2602 decoding_encoding_example_deps="avcodec avformat avutil"
2603 demuxing_decoding_example_deps="avcodec avformat avutil"
2604 extract_mvs_example_deps="avcodec avformat avutil"
2605 filter_audio_example_deps="avfilter avutil"
2606 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2607 filtering_video_example_deps="avfilter avcodec avformat avutil"
2608 metadata_example_deps="avformat avutil"
2609 muxing_example_deps="avcodec avformat avutil swscale"
2610 remuxing_example_deps="avcodec avformat avutil"
2611 resampling_audio_example_deps="avutil swresample"
2612 scaling_video_example_deps="avutil swscale"
2613 transcode_aac_example_deps="avcodec avformat swresample"
2614 transcoding_example_deps="avfilter avcodec avformat avutil"
2615
2616 # libraries, in linking order
2617 avcodec_deps="avutil"
2618 avdevice_deps="avformat avcodec avutil"
2619 avfilter_deps="avutil"
2620 avformat_deps="avcodec avutil"
2621 avresample_deps="avutil"
2622 postproc_deps="avutil gpl"
2623 swresample_deps="avutil"
2624 swscale_deps="avutil"
2625
2626 # programs
2627 ffmpeg_deps="avcodec avfilter avformat swresample"
2628 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2629                null_filter
2630                setpts_filter trim_filter"
2631 ffplay_deps="avcodec avformat swscale swresample sdl"
2632 ffplay_libs='$sdl_libs'
2633 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2634 ffprobe_deps="avcodec avformat"
2635 ffserver_deps="avformat fork sarestart"
2636 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2637
2638 # documentation
2639 podpages_deps="perl"
2640 manpages_deps="perl pod2man"
2641 htmlpages_deps="perl"
2642 htmlpages_deps_any="makeinfo_html texi2html"
2643 txtpages_deps="perl makeinfo"
2644 doc_deps_any="manpages htmlpages podpages txtpages"
2645
2646 # default parameters
2647
2648 logfile="config.log"
2649
2650 # installation paths
2651 prefix_default="/usr/local"
2652 bindir_default='${prefix}/bin'
2653 datadir_default='${prefix}/share/ffmpeg'
2654 docdir_default='${prefix}/share/doc/ffmpeg'
2655 incdir_default='${prefix}/include'
2656 libdir_default='${prefix}/lib'
2657 mandir_default='${prefix}/share/man'
2658 shlibdir_default="$libdir_default"
2659
2660 # toolchain
2661 ar_default="ar"
2662 cc_default="gcc"
2663 cxx_default="g++"
2664 host_cc_default="gcc"
2665 cp_f="cp -f"
2666 doxygen_default="doxygen"
2667 install="install"
2668 ln_s="ln -s -f"
2669 nm_default="nm -g"
2670 objformat="elf"
2671 pkg_config_default=pkg-config
2672 ranlib_default="ranlib"
2673 strip_default="strip"
2674 yasmexe_default="yasm"
2675 windres_default="windres"
2676
2677 # OS
2678 target_os_default=$(tolower $(uname -s))
2679 host_os=$target_os_default
2680
2681 # machine
2682 if test "$target_os_default" = aix; then
2683     arch_default=$(uname -p)
2684     strip_default="strip -X32_64"
2685 else
2686     arch_default=$(uname -m)
2687 fi
2688 cpu="generic"
2689 intrinsics="none"
2690
2691 # configurable options
2692 enable $PROGRAM_LIST
2693 enable $DOCUMENT_LIST
2694 enable $EXAMPLE_LIST
2695 enable $(filter_out avresample $LIBRARY_LIST)
2696 enable stripping
2697
2698 enable asm
2699 enable debug
2700 enable doc
2701 enable faan faandct faanidct
2702 enable optimizations
2703 enable runtime_cpudetect
2704 enable safe_bitstream_reader
2705 enable static
2706 enable swscale_alpha
2707
2708 sws_max_filter_size_default=256
2709 set_default sws_max_filter_size
2710
2711 # Enable hwaccels by default.
2712 enable dxva2 vaapi vda vdpau xvmc
2713 enable xlib
2714
2715 # build settings
2716 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2717 LIBPREF="lib"
2718 LIBSUF=".a"
2719 FULLNAME='$(NAME)$(BUILDSUF)'
2720 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2721 SLIBPREF="lib"
2722 SLIBSUF=".so"
2723 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2724 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2725 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2726 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2727 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2728 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2729
2730 asflags_filter=echo
2731 cflags_filter=echo
2732 ldflags_filter=echo
2733
2734 AS_C='-c'
2735 AS_O='-o $@'
2736 CC_C='-c'
2737 CC_E='-E -o $@'
2738 CC_O='-o $@'
2739 CXX_C='-c'
2740 CXX_O='-o $@'
2741 LD_O='-o $@'
2742 LD_LIB='-l%'
2743 LD_PATH='-L'
2744 HOSTCC_C='-c'
2745 HOSTCC_E='-E -o $@'
2746 HOSTCC_O='-o $@'
2747 HOSTLD_O='-o $@'
2748
2749 host_libs='-lm'
2750 host_cflags_filter=echo
2751 host_ldflags_filter=echo
2752
2753 target_path='$(CURDIR)'
2754
2755 # since the object filename is not given with the -MM flag, the compiler
2756 # is only able to print the basename, and we must add the path ourselves
2757 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2758 DEPFLAGS='-MM'
2759
2760 # find source path
2761 if test -f configure; then
2762     source_path=.
2763 else
2764     source_path=$(cd $(dirname "$0"); pwd)
2765     echo "$source_path" | grep -q '[[:blank:]]' &&
2766         die "Out of tree builds are impossible with whitespace in source path."
2767     test -e "$source_path/config.h" &&
2768         die "Out of tree builds are impossible with config.h in source dir."
2769 fi
2770
2771 for v in "$@"; do
2772     r=${v#*=}
2773     l=${v%"$r"}
2774     r=$(sh_quote "$r")
2775     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2776 done
2777
2778 find_things(){
2779     thing=$1
2780     pattern=$2
2781     file=$source_path/$3
2782     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2783 }
2784
2785 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2786 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2787 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2788 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2789 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2790 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2791 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2792 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2793 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2794 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2795 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2796
2797 ALL_COMPONENTS="
2798     $BSF_LIST
2799     $DECODER_LIST
2800     $DEMUXER_LIST
2801     $ENCODER_LIST
2802     $FILTER_LIST
2803     $HWACCEL_LIST
2804     $INDEV_LIST
2805     $MUXER_LIST
2806     $OUTDEV_LIST
2807     $PARSER_LIST
2808     $PROTOCOL_LIST
2809 "
2810
2811 for n in $COMPONENT_LIST; do
2812     v=$(toupper ${n%s})_LIST
2813     eval enable \$$v
2814     eval ${n}_if_any="\$$v"
2815 done
2816
2817 enable $ARCH_EXT_LIST
2818
2819 die_unknown(){
2820     echo "Unknown option \"$1\"."
2821     echo "See $0 --help for available options."
2822     exit 1
2823 }
2824
2825 print_3_columns() {
2826     cat | tr ' ' '\n' | sort | pr -r -3 -t
2827 }
2828
2829 show_list() {
2830     suffix=_$1
2831     shift
2832     echo $* | sed s/$suffix//g | print_3_columns
2833     exit 0
2834 }
2835
2836 rand_list(){
2837     IFS=', '
2838     set -- $*
2839     unset IFS
2840     for thing; do
2841         comp=${thing%:*}
2842         prob=${thing#$comp}
2843         prob=${prob#:}
2844         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2845         echo "prob ${prob:-0.5}"
2846         printf '%s\n' $comp
2847     done
2848 }
2849
2850 do_random(){
2851     action=$1
2852     shift
2853     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2854     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2855 }
2856
2857 for opt do
2858     optval="${opt#*=}"
2859     case "$opt" in
2860         --extra-ldflags=*)
2861             add_ldflags $optval
2862         ;;
2863         --extra-ldexeflags=*)
2864             add_ldexeflags $optval
2865         ;;
2866         --extra-libs=*)
2867             add_extralibs $optval
2868         ;;
2869         --disable-devices)
2870             disable $INDEV_LIST $OUTDEV_LIST
2871         ;;
2872         --enable-debug=*)
2873             debuglevel="$optval"
2874         ;;
2875         --disable-programs)
2876             disable $PROGRAM_LIST
2877         ;;
2878         --disable-everything)
2879             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2880         ;;
2881         --disable-all)
2882             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2883             disable $LIBRARY_LIST $PROGRAM_LIST doc
2884         ;;
2885         --enable-random|--disable-random)
2886             action=${opt%%-random}
2887             do_random ${action#--} $COMPONENT_LIST
2888         ;;
2889         --enable-random=*|--disable-random=*)
2890             action=${opt%%-random=*}
2891             do_random ${action#--} $optval
2892         ;;
2893         --enable-*=*|--disable-*=*)
2894             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2895             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2896             eval list=\$$(toupper $thing)_LIST
2897             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2898             list=$(filter "$name" $list)
2899             [ "$list" = "" ] && warn "Option $opt did not match anything"
2900             $action $list
2901         ;;
2902         --enable-?*|--disable-?*)
2903             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2904             if is_in $option $COMPONENT_LIST; then
2905                 test $action = disable && action=unset
2906                 eval $action \$$(toupper ${option%s})_LIST
2907             elif is_in $option $CMDLINE_SELECT; then
2908                 $action $option
2909             else
2910                 die_unknown $opt
2911             fi
2912         ;;
2913         --list-*)
2914             NAME="${opt#--list-}"
2915             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2916             NAME=${NAME%s}
2917             eval show_list $NAME \$$(toupper $NAME)_LIST
2918         ;;
2919         --help|-h) show_help
2920         ;;
2921         --fatal-warnings) enable fatal_warnings
2922         ;;
2923         *)
2924             optname="${opt%%=*}"
2925             optname="${optname#--}"
2926             optname=$(echo "$optname" | sed 's/-/_/g')
2927             if is_in $optname $CMDLINE_SET; then
2928                 eval $optname='$optval'
2929             elif is_in $optname $CMDLINE_APPEND; then
2930                 append $optname "$optval"
2931             else
2932                 die_unknown $opt
2933             fi
2934         ;;
2935     esac
2936 done
2937
2938 disabled logging && logfile=/dev/null
2939
2940 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2941 set >> $logfile
2942
2943 test -n "$cross_prefix" && enable cross_compile
2944
2945 if enabled cross_compile; then
2946     test -n "$arch" && test -n "$target_os" ||
2947         die "Must specify target arch and OS when cross-compiling"
2948 fi
2949
2950 ar_default="${cross_prefix}${ar_default}"
2951 cc_default="${cross_prefix}${cc_default}"
2952 cxx_default="${cross_prefix}${cxx_default}"
2953 nm_default="${cross_prefix}${nm_default}"
2954 pkg_config_default="${cross_prefix}${pkg_config_default}"
2955 ranlib_default="${cross_prefix}${ranlib_default}"
2956 strip_default="${cross_prefix}${strip_default}"
2957 windres_default="${cross_prefix}${windres_default}"
2958
2959 sysinclude_default="${sysroot}/usr/include"
2960
2961 test -n "$valgrind" && toolchain="valgrind-memcheck"
2962
2963 case "$toolchain" in
2964     clang-asan)
2965         cc_default="clang"
2966         add_cflags  -fsanitize=address
2967         add_ldflags -fsanitize=address
2968     ;;
2969     clang-tsan)
2970         cc_default="clang"
2971         add_cflags  -fsanitize=thread -pie
2972         add_ldflags -fsanitize=thread -pie
2973     ;;
2974     clang-usan)
2975         cc_default="clang"
2976         add_cflags  -fsanitize=undefined
2977         add_ldflags -fsanitize=undefined
2978     ;;
2979     gcc-asan)
2980         cc_default="gcc"
2981         add_cflags  -fsanitize=address
2982         add_ldflags -fsanitize=address
2983     ;;
2984     gcc-tsan)
2985         cc_default="gcc"
2986         add_cflags  -fsanitize=thread -pie -fPIC
2987         add_ldflags -fsanitize=thread -pie -fPIC
2988     ;;
2989     gcc-usan)
2990         cc_default="gcc"
2991         add_cflags  -fsanitize=undefined
2992         add_ldflags -fsanitize=undefined
2993     ;;
2994     valgrind-massif)
2995         target_exec_default=${valgrind:-"valgrind"}
2996         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"
2997     ;;
2998     valgrind-memcheck)
2999         target_exec_default=${valgrind:-"valgrind"}
3000         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3001     ;;
3002     msvc)
3003         # Check whether the current MSVC version needs the C99 converter.
3004         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3005         # support enough of C99 to build ffmpeg. Default to the new
3006         # behaviour if the regexp was unable to match anything, since this
3007         # successfully parses the version number of existing supported
3008         # versions that require the converter (MSVC 2010 and 2012).
3009         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3010         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3011             cc_default="cl"
3012         else
3013             cc_default="c99wrap cl"
3014         fi
3015         ld_default="link"
3016         nm_default="dumpbin -symbols"
3017         ar_default="lib"
3018         target_os_default="win32"
3019         # Use a relative path for TMPDIR. This makes sure all the
3020         # ffconf temp files are written with a relative path, avoiding
3021         # issues with msys/win32 path conversion for MSVC parameters
3022         # such as -Fo<file> or -out:<file>.
3023         TMPDIR=.
3024     ;;
3025     icl)
3026         cc_default="icl"
3027         ld_default="xilink"
3028         nm_default="dumpbin -symbols"
3029         ar_default="xilib"
3030         target_os_default="win32"
3031         TMPDIR=.
3032     ;;
3033     gcov)
3034         add_cflags  -fprofile-arcs -ftest-coverage
3035         add_ldflags -fprofile-arcs -ftest-coverage
3036     ;;
3037     hardened)
3038         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3039         add_cflags   -fno-strict-overflow -fstack-protector-all
3040         add_ldflags  -Wl,-z,relro -Wl,-z,now
3041     ;;
3042     ?*)
3043         die "Unknown toolchain $toolchain"
3044     ;;
3045 esac
3046
3047 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3048     target_exec target_os yasmexe
3049 enabled cross_compile || host_cc_default=$cc
3050 set_default host_cc
3051
3052 if ! $pkg_config --version >/dev/null 2>&1; then
3053     warn "$pkg_config not found, library detection may fail."
3054     pkg_config=false
3055 fi
3056
3057 if test $doxygen != $doxygen_default && \
3058   ! $doxygen --version >/dev/null 2>&1; then
3059     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3060 fi
3061
3062 exesuf() {
3063     case $1 in
3064         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3065     esac
3066 }
3067
3068 EXESUF=$(exesuf $target_os)
3069 HOSTEXESUF=$(exesuf $host_os)
3070
3071 # set temporary file name
3072 : ${TMPDIR:=$TEMPDIR}
3073 : ${TMPDIR:=$TMP}
3074 : ${TMPDIR:=/tmp}
3075
3076 if [ -n "$tempprefix" ] ; then
3077     mktemp(){
3078         echo $tempprefix.${HOSTNAME}.${UID}
3079     }
3080 elif ! check_cmd mktemp -u XXXXXX; then
3081     # simple replacement for missing mktemp
3082     # NOT SAFE FOR GENERAL USE
3083     mktemp(){
3084         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3085     }
3086 fi
3087
3088 tmpfile(){
3089     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3090         (set -C; exec > $tmp) 2>/dev/null ||
3091         die "Unable to create temporary file in $TMPDIR."
3092     append TMPFILES $tmp
3093     eval $1=$tmp
3094 }
3095
3096 trap 'rm -f -- $TMPFILES' EXIT
3097
3098 tmpfile TMPASM .asm
3099 tmpfile TMPC   .c
3100 tmpfile TMPCPP .cpp
3101 tmpfile TMPE   $EXESUF
3102 tmpfile TMPH   .h
3103 tmpfile TMPM   .m
3104 tmpfile TMPO   .o
3105 tmpfile TMPS   .S
3106 tmpfile TMPSH  .sh
3107 tmpfile TMPV   .ver
3108
3109 unset -f mktemp
3110
3111 chmod +x $TMPE
3112
3113 # make sure we can execute files in $TMPDIR
3114 cat > $TMPSH 2>> $logfile <<EOF
3115 #! /bin/sh
3116 EOF
3117 chmod +x $TMPSH >> $logfile 2>&1
3118 if ! $TMPSH >> $logfile 2>&1; then
3119     cat <<EOF
3120 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3121 variable to another directory and make sure that it is not mounted noexec.
3122 EOF
3123     die "Sanity test failed."
3124 fi
3125
3126 armasm_flags(){
3127     for flag; do
3128         case $flag in
3129             # Filter out MSVC cl.exe options from cflags that shouldn't
3130             # be passed to gas-preprocessor
3131             -M[TD]*)                                            ;;
3132             *)                  echo $flag                      ;;
3133         esac
3134    done
3135 }
3136
3137 ccc_flags(){
3138     for flag; do
3139         case $flag in
3140             -std=c99)           echo -c99                       ;;
3141             -mcpu=*)            echo -arch ${flag#*=}           ;;
3142             -mieee)             echo -ieee                      ;;
3143             -O*|-fast)          echo $flag                      ;;
3144             -fno-math-errno)    echo -assume nomath_errno       ;;
3145             -g)                 echo -g3                        ;;
3146             -Wall)              echo -msg_enable level2         ;;
3147             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3148             -Wl,*)              echo $flag                      ;;
3149             -f*|-W*)                                            ;;
3150             *)                  echo $flag                      ;;
3151         esac
3152    done
3153 }
3154
3155 cparser_flags(){
3156     for flag; do
3157         case $flag in
3158             -Wno-switch)             echo -Wno-switch-enum ;;
3159             -Wno-format-zero-length) ;;
3160             -Wdisabled-optimization) ;;
3161             -Wno-pointer-sign)       echo -Wno-other ;;
3162             *)                       echo $flag ;;
3163         esac
3164     done
3165 }
3166
3167 msvc_common_flags(){
3168     for flag; do
3169         case $flag in
3170             # In addition to specifying certain flags under the compiler
3171             # specific filters, they must be specified here as well or else the
3172             # generic catch all at the bottom will print the original flag.
3173             -Wall)                ;;
3174             -std=c99)             ;;
3175             # Common flags
3176             -fomit-frame-pointer) ;;
3177             -g)                   echo -Z7 ;;
3178             -fno-math-errno)      ;;
3179             -fno-common)          ;;
3180             -fno-signed-zeros)    ;;
3181             -fPIC)                ;;
3182             -mthumb)              ;;
3183             -march=*)             ;;
3184             -lz)                  echo zlib.lib ;;
3185             -lavifil32)           echo vfw32.lib ;;
3186             -lavicap32)           echo vfw32.lib user32.lib ;;
3187             -l*)                  echo ${flag#-l}.lib ;;
3188             *)                    echo $flag ;;
3189         esac
3190     done
3191 }
3192
3193 msvc_flags(){
3194     msvc_common_flags "$@"
3195     for flag; do
3196         case $flag in
3197             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3198                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3199                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3200                                        -wd4554 \
3201                                        -wd4273 -wd4701 ;;
3202         esac
3203     done
3204 }
3205
3206 icl_flags(){
3207     msvc_common_flags "$@"
3208     for flag; do
3209         case $flag in
3210             # Despite what Intel's documentation says -Wall, which is supported
3211             # on Windows, does enable remarks so disable them here.
3212             -Wall)                echo $flag -Qdiag-disable:remark ;;
3213             -std=c99)             echo -Qstd=c99 ;;
3214             -flto)                echo -ipo ;;
3215         esac
3216     done
3217 }
3218
3219 icc_flags(){
3220     for flag; do
3221         case $flag in
3222             -flto)                echo -ipo ;;
3223             *)                    echo $flag ;;
3224         esac
3225     done
3226 }
3227
3228 pgi_flags(){
3229     for flag; do
3230         case $flag in
3231             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3232             -fomit-frame-pointer) echo -Mnoframe ;;
3233             -g)                   echo -gopt ;;
3234             *)                    echo $flag ;;
3235         esac
3236     done
3237 }
3238
3239 suncc_flags(){
3240     for flag; do
3241         case $flag in
3242             -march=*|-mcpu=*)
3243                 case "${flag#*=}" in
3244                     native)                   echo -xtarget=native       ;;
3245                     v9|niagara)               echo -xarch=sparc          ;;
3246                     ultrasparc)               echo -xarch=sparcvis       ;;
3247                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3248                     i586|pentium)             echo -xchip=pentium        ;;
3249                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3250                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3251                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3252                     pentium4*)          echo -xtarget=pentium4           ;;
3253                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3254                     *-sse3)             echo -xarch=sse3                 ;;
3255                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3256                     bonnell)                   echo -xarch=ssse3         ;;
3257                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3258                     westmere)                  echo -xtarget=westmere    ;;
3259                     silvermont)                echo -xarch=sse4_2        ;;
3260                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3261                     core-avx*|ivybridge|haswell|broadwell)
3262                                                echo -xarch=avx           ;;
3263                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3264                     btver1)                    echo -xarch=amdsse4a      ;;
3265                     btver2|bdver*)             echo -xarch=avx           ;;
3266                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3267                     k8|opteron|athlon64|athlon-fx)
3268                                                echo -xarch=sse2a         ;;
3269                     athlon*)                   echo -xarch=pentium_proa  ;;
3270                 esac
3271                 ;;
3272             -std=c99)             echo -xc99              ;;
3273             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3274             -fPIC)                echo -KPIC -xcode=pic32 ;;
3275             -W*,*)                echo $flag              ;;
3276             -f*-*|-W*|-mimpure-text)                      ;;
3277             -shared)              echo -G                 ;;
3278             *)                    echo $flag              ;;
3279         esac
3280     done
3281 }
3282
3283 tms470_flags(){
3284     for flag; do
3285         case $flag in
3286             -march=*|-mcpu=*)
3287                 case "${flag#*=}" in
3288                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3289                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3290                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3291                     armv6*|arm11*)          echo -mv=6   ;;
3292                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3293                                             echo -mv=5e  ;;
3294                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3295                 esac
3296                 ;;
3297             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3298             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3299             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3300             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3301             -msoft-float)   echo --float_support=vfplib       ;;
3302             -O[0-3]|-mf=*)  echo $flag                        ;;
3303             -g)             echo -g -mn                       ;;
3304             -pds=*)         echo $flag                        ;;
3305             -D*|-I*)        echo $flag                        ;;
3306             --gcc|--abi=*)  echo $flag                        ;;
3307             -me)            echo $flag                        ;;
3308         esac
3309     done
3310 }
3311
3312 probe_cc(){
3313     pfx=$1
3314     _cc=$2
3315
3316     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3317     unset _ld_o _ldflags _ld_lib _ld_path
3318     unset _depflags _DEPCMD _DEPFLAGS
3319     _flags_filter=echo
3320
3321     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3322         true # no-op to avoid reading stdin in following checks
3323     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3324         _type=llvm_gcc
3325         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3326         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3327         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3328         _cflags_speed='-O3'
3329         _cflags_size='-Os'
3330     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3331         _type=gcc
3332         gcc_version=$($_cc --version | head -n1)
3333         gcc_basever=$($_cc -dumpversion)
3334         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3335         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3336         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3337         if ! $_cc -dumpversion | grep -q '^2\.'; then
3338             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3339         fi
3340         _cflags_speed='-O3'
3341         _cflags_size='-Os'
3342     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3343         _type=icc
3344         _ident=$($_cc --version | head -n1)
3345         _depflags='-MMD'
3346         _cflags_speed='-O3'
3347         _cflags_size='-Os'
3348         _cflags_noopt='-O1'
3349         _flags_filter=icc_flags
3350     elif $_cc -v 2>&1 | grep -q xlc; then
3351         _type=xlc
3352         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3353         _cflags_speed='-O5'
3354         _cflags_size='-O5 -qcompact'
3355     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3356         _type=ccc
3357         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3358         _DEPFLAGS='-M'
3359         _cflags_speed='-fast'
3360         _cflags_size='-O1'
3361         _flags_filter=ccc_flags
3362     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3363         test -d "$sysroot" || die "No valid sysroot specified."
3364         _type=armcc
3365         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3366         armcc_conf="$PWD/armcc.conf"
3367         $_cc --arm_linux_configure                 \
3368              --arm_linux_config_file="$armcc_conf" \
3369              --configure_sysroot="$sysroot"        \
3370              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3371              die "Error creating armcc configuration file."
3372         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3373         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3374         as_default="${cross_prefix}gcc"
3375         _depflags='-MMD'
3376         _cflags_speed='-O3'
3377         _cflags_size='-Os'
3378     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3379         _type=tms470
3380         _ident=$($_cc -version | head -n1 | tr -s ' ')
3381         _flags='--gcc --abi=eabi -me'
3382         _cc_e='-ppl -fe=$@'
3383         _cc_o='-fe=$@'
3384         _depflags='-ppa -ppd=$(@:.o=.d)'
3385         _cflags_speed='-O3 -mf=5'
3386         _cflags_size='-O3 -mf=2'
3387         _flags_filter=tms470_flags
3388     elif $_cc -v 2>&1 | grep -q clang; then
3389         _type=clang
3390         _ident=$($_cc --version | head -n1)
3391         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3392         _cflags_speed='-O3'
3393         _cflags_size='-Os'
3394     elif $_cc -V 2>&1 | grep -q Sun; then
3395         _type=suncc
3396         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3397         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3398         _DEPFLAGS='-xM1 -xc99'
3399         _ldflags='-std=c99'
3400         _cflags_speed='-O5'
3401         _cflags_size='-O5 -xspace'
3402         _flags_filter=suncc_flags
3403     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3404         _type=pathscale
3405         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3406         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3407         _cflags_speed='-O2'
3408         _cflags_size='-Os'
3409         _flags_filter='filter_out -Wdisabled-optimization'
3410     elif $_cc -v 2>&1 | grep -q Open64; then
3411         _type=open64
3412         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3413         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3414         _cflags_speed='-O2'
3415         _cflags_size='-Os'
3416         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3417     elif $_cc -V 2>&1 | grep -q Portland; then
3418         _type=pgi
3419         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3420         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3421         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3422         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3423         _cflags_noopt="-O"
3424         _flags_filter=pgi_flags
3425     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3426         _type=armasm
3427         _ident=$($_cc | head -n1)
3428         # 4509: "This form of conditional instruction is deprecated"
3429         _flags="-nologo -ignore 4509"
3430         _flags_filter=armasm_flags
3431     elif $_cc 2>&1 | grep -q Microsoft; then
3432         _type=msvc
3433         _ident=$($cc 2>&1 | head -n1)
3434         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3435         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3436         _cflags_speed="-O2"
3437         _cflags_size="-O1"
3438         if $_cc 2>&1 | grep -q Linker; then
3439             _ld_o='-out:$@'
3440         else
3441             _ld_o='-Fe$@'
3442         fi
3443         _cc_o='-Fo$@'
3444         _cc_e='-P -Fi$@'
3445         _flags_filter=msvc_flags
3446         _ld_lib='lib%.a'
3447         _ld_path='-libpath:'
3448         _flags='-nologo'
3449         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3450         if [ $pfx = hostcc ]; then
3451             append _cflags -Dsnprintf=_snprintf
3452         fi
3453         disable stripping
3454     elif $_cc 2>&1 | grep -q Intel; then
3455         _type=icl
3456         _ident=$($cc 2>&1 | head -n1)
3457         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3458         # Not only is O3 broken on 13.x+ but it is slower on all previous
3459         # versions (tested) as well.
3460         _cflags_speed="-O2"
3461         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3462         if $_cc 2>&1 | grep -q Linker; then
3463             _ld_o='-out:$@'
3464         else
3465             _ld_o='-Fe$@'
3466         fi
3467         _cc_o='-Fo$@'
3468         _cc_e='-P'
3469         _flags_filter=icl_flags
3470         _ld_lib='lib%.a'
3471         _ld_path='-libpath:'
3472         # -Qdiag-error to make icl error when seeing certain unknown arguments
3473         _flags='-nologo -Qdiag-error:4044,10157'
3474         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3475         # with MSVC which enables it by default.
3476         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3477         if [ $pfx = hostcc ]; then
3478             append _cflags -Dsnprintf=_snprintf
3479         fi
3480     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3481         _type=cparser
3482         _ident=$($_cc --version | head -n1)
3483         _depflags='-MMD'
3484         _cflags_speed='-O4'
3485         _cflags_size='-O2'
3486         _flags_filter=cparser_flags
3487     fi
3488
3489     eval ${pfx}_type=\$_type
3490     eval ${pfx}_ident=\$_ident
3491 }
3492
3493 set_ccvars(){
3494     eval ${1}_C=\${_cc_c-\${${1}_C}}
3495     eval ${1}_E=\${_cc_e-\${${1}_E}}
3496     eval ${1}_O=\${_cc_o-\${${1}_O}}
3497
3498     if [ -n "$_depflags" ]; then
3499         eval ${1}_DEPFLAGS=\$_depflags
3500     else
3501         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3502         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3503         eval DEP${1}FLAGS=\$_flags
3504     fi
3505 }
3506
3507 probe_cc cc "$cc"
3508 cflags_filter=$_flags_filter
3509 cflags_speed=$_cflags_speed
3510 cflags_size=$_cflags_size
3511 cflags_noopt=$_cflags_noopt
3512 add_cflags $_flags $_cflags
3513 cc_ldflags=$_ldflags
3514 set_ccvars CC
3515
3516 probe_cc hostcc "$host_cc"
3517 host_cflags_filter=$_flags_filter
3518 add_host_cflags  $_flags $_cflags
3519 set_ccvars HOSTCC
3520
3521 test -n "$cc_type" && enable $cc_type ||
3522     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3523
3524 : ${as_default:=$cc}
3525 : ${dep_cc_default:=$cc}
3526 : ${ld_default:=$cc}
3527 : ${host_ld_default:=$host_cc}
3528 set_default ar as dep_cc ld host_ld windres
3529
3530 probe_cc as "$as"
3531 asflags_filter=$_flags_filter
3532 add_asflags $_flags $_cflags
3533 set_ccvars AS
3534
3535 probe_cc ld "$ld"
3536 ldflags_filter=$_flags_filter
3537 add_ldflags $_flags $_ldflags
3538 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3539 LD_O=${_ld_o-$LD_O}
3540 LD_LIB=${_ld_lib-$LD_LIB}
3541 LD_PATH=${_ld_path-$LD_PATH}
3542
3543 probe_cc hostld "$host_ld"
3544 host_ldflags_filter=$_flags_filter
3545 add_host_ldflags $_flags $_ldflags
3546 HOSTLD_O=${_ld_o-$HOSTLD_O}
3547
3548 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3549     probe_cc depcc "$dep_cc"
3550     CCDEP=${_DEPCMD:-$DEPCMD}
3551     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3552     DEPCCFLAGS=$_flags
3553 fi
3554
3555 if $ar 2>&1 | grep -q Microsoft; then
3556     arflags="-nologo"
3557     ar_o='-out:$@'
3558 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3559     arflags="rq"
3560     ar_o='$@'
3561 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3562     arflags='-Xany -r -c'
3563     ar_o='$@'
3564 else
3565     arflags="rc"
3566     ar_o='$@'
3567 fi
3568
3569 add_cflags $extra_cflags
3570 add_cxxflags $extra_cxxflags
3571 add_asflags $extra_cflags
3572
3573 if test -n "$sysroot"; then
3574     case "$cc_type" in
3575         gcc|llvm_gcc|clang)
3576             add_cppflags --sysroot="$sysroot"
3577             add_ldflags --sysroot="$sysroot"
3578 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3579             add_cppflags -isysroot "$sysroot"
3580             add_ldflags -isysroot "$sysroot"
3581         ;;
3582         tms470)
3583             add_cppflags -I"$sysinclude"
3584             add_ldflags  --sysroot="$sysroot"
3585         ;;
3586     esac
3587 fi
3588
3589 if test "$cpu" = host; then
3590     enabled cross_compile &&
3591         die "--cpu=host makes no sense when cross-compiling."
3592
3593     case "$cc_type" in
3594         gcc|llvm_gcc)
3595             check_native(){
3596                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3597                 sed -n "/cc1.*$1=/{
3598                             s/.*$1=\\([^ ]*\\).*/\\1/
3599                             p
3600                             q
3601                         }" $TMPE
3602             }
3603             cpu=$(check_native -march || check_native -mcpu)
3604         ;;
3605     esac
3606
3607     test "${cpu:-host}" = host &&
3608         die "--cpu=host not supported with compiler $cc"
3609 fi
3610
3611 # Deal with common $arch aliases
3612 case "$arch" in
3613     aarch64|arm64)
3614         arch="aarch64"
3615     ;;
3616     arm*|iPad*|iPhone*)
3617         arch="arm"
3618     ;;
3619     mips*|IP*)
3620         arch="mips"
3621     ;;
3622     parisc*|hppa*)
3623         arch="parisc"
3624     ;;
3625     "Power Macintosh"|ppc*|powerpc*)
3626         arch="ppc"
3627     ;;
3628     s390|s390x)
3629         arch="s390"
3630     ;;
3631     sh4|sh)
3632         arch="sh4"
3633     ;;
3634     sun4u|sparc*)
3635         arch="sparc"
3636     ;;
3637     tilegx|tile-gx)
3638         arch="tilegx"
3639     ;;
3640     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3641         arch="x86"
3642     ;;
3643 esac
3644
3645 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3646 enable $arch
3647
3648 # Add processor-specific flags
3649 if enabled aarch64; then
3650
3651     case $cpu in
3652         armv*)
3653             cpuflags="-march=$cpu"
3654         ;;
3655         *)
3656             cpuflags="-mcpu=$cpu"
3657         ;;
3658     esac
3659
3660 elif enabled alpha; then
3661
3662     cpuflags="-mcpu=$cpu"
3663
3664 elif enabled arm; then
3665
3666     check_arm_arch() {
3667         check_cpp_condition stddef.h \
3668             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3669             $cpuflags
3670     }
3671
3672     probe_arm_arch() {
3673         if   check_arm_arch 4;        then echo armv4;
3674         elif check_arm_arch 4T;       then echo armv4t;
3675         elif check_arm_arch 5;        then echo armv5;
3676         elif check_arm_arch 5E;       then echo armv5e;
3677         elif check_arm_arch 5T;       then echo armv5t;
3678         elif check_arm_arch 5TE;      then echo armv5te;
3679         elif check_arm_arch 5TEJ;     then echo armv5te;
3680         elif check_arm_arch 6;        then echo armv6;
3681         elif check_arm_arch 6J;       then echo armv6j;
3682         elif check_arm_arch 6K;       then echo armv6k;
3683         elif check_arm_arch 6Z;       then echo armv6z;
3684         elif check_arm_arch 6ZK;      then echo armv6zk;
3685         elif check_arm_arch 6T2;      then echo armv6t2;
3686         elif check_arm_arch 7;        then echo armv7;
3687         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3688         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3689         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3690         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3691         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3692         fi
3693     }
3694
3695     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3696
3697     case $cpu in
3698         armv*)
3699             cpuflags="-march=$cpu"
3700             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3701         ;;
3702         *)
3703             cpuflags="-mcpu=$cpu"
3704             case $cpu in
3705                 cortex-a*)                               subarch=armv7a  ;;
3706                 cortex-r*)                               subarch=armv7r  ;;
3707                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3708                 arm11*)                                  subarch=armv6   ;;
3709                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3710                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3711                 *)                             subarch=$(probe_arm_arch) ;;
3712             esac
3713         ;;
3714     esac
3715
3716     case "$subarch" in
3717         armv5t*)    enable fast_clz                ;;
3718         armv[6-8]*)
3719             enable fast_clz
3720             disabled fast_unaligned || enable fast_unaligned
3721             ;;
3722     esac
3723
3724 elif enabled avr32; then
3725
3726     case $cpu in
3727         ap7[02]0[0-2])
3728             subarch="avr32_ap"
3729             cpuflags="-mpart=$cpu"
3730         ;;
3731         ap)
3732             subarch="avr32_ap"
3733             cpuflags="-march=$cpu"
3734         ;;
3735         uc3[ab]*)
3736             subarch="avr32_uc"
3737             cpuflags="-mcpu=$cpu"
3738         ;;
3739         uc)
3740             subarch="avr32_uc"
3741             cpuflags="-march=$cpu"
3742         ;;
3743     esac
3744
3745 elif enabled bfin; then
3746
3747     cpuflags="-mcpu=$cpu"
3748
3749 elif enabled mips; then
3750
3751     cpuflags="-march=$cpu"
3752
3753     case $cpu in
3754         24kc)
3755             disable mipsfpu
3756             disable mipsdspr1
3757             disable mipsdspr2
3758         ;;
3759         24kf*)
3760             disable mipsdspr1
3761             disable mipsdspr2
3762         ;;
3763         24kec|34kc|1004kc)
3764             disable mipsfpu
3765             disable mipsdspr2
3766         ;;
3767         24kef*|34kf*|1004kf*)
3768             disable mipsdspr2
3769         ;;
3770         74kc)
3771             disable mipsfpu
3772         ;;
3773     esac
3774
3775 elif enabled ppc; then
3776
3777     disable ldbrx
3778     disable vsx
3779
3780     case $(tolower $cpu) in
3781         601|ppc601|powerpc601)
3782             cpuflags="-mcpu=601"
3783             disable altivec
3784         ;;
3785         603*|ppc603*|powerpc603*)
3786             cpuflags="-mcpu=603"
3787             disable altivec
3788         ;;
3789         604*|ppc604*|powerpc604*)
3790             cpuflags="-mcpu=604"
3791             disable altivec
3792         ;;
3793         g3|75*|ppc75*|powerpc75*)
3794             cpuflags="-mcpu=750"
3795             disable altivec
3796         ;;
3797         g4|745*|ppc745*|powerpc745*)
3798             cpuflags="-mcpu=7450"
3799         ;;
3800         74*|ppc74*|powerpc74*)
3801             cpuflags="-mcpu=7400"
3802         ;;
3803         g5|970|ppc970|powerpc970)
3804             cpuflags="-mcpu=970"
3805         ;;
3806         power[3-8]*)
3807             cpuflags="-mcpu=$cpu"
3808         ;;
3809         cell)
3810             cpuflags="-mcpu=cell"
3811             enable ldbrx
3812         ;;
3813         e500mc)
3814             cpuflags="-mcpu=e500mc"
3815             disable altivec
3816         ;;
3817         e500v2)
3818             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3819             disable altivec
3820             disable dcbzl
3821         ;;
3822         e500)
3823             cpuflags="-mcpu=8540 -mhard-float"
3824             disable altivec
3825             disable dcbzl
3826         ;;
3827     esac
3828
3829 elif enabled sparc; then
3830
3831     case $cpu in
3832         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3833             cpuflags="-mcpu=$cpu"
3834         ;;
3835         ultrasparc*|niagara[234])
3836             cpuflags="-mcpu=$cpu"
3837         ;;
3838     esac
3839
3840 elif enabled x86; then
3841
3842     case $cpu in
3843         i[345]86|pentium)
3844             cpuflags="-march=$cpu"
3845             disable i686
3846             disable mmx
3847         ;;
3848         # targets that do NOT support nopl and conditional mov (cmov)
3849         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3850             cpuflags="-march=$cpu"
3851             disable i686
3852         ;;
3853         # targets that do support nopl and conditional mov (cmov)
3854         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
3855         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
3856             cpuflags="-march=$cpu"
3857             enable i686
3858             enable fast_cmov
3859         ;;
3860         # targets that do support conditional mov but on which it's slow
3861         pentium4|pentium4m|prescott|nocona)
3862             cpuflags="-march=$cpu"
3863             enable i686
3864             disable fast_cmov
3865         ;;
3866     esac
3867
3868 fi
3869
3870 if [ "$cpu" != generic ]; then
3871     add_cflags  $cpuflags
3872     add_asflags $cpuflags
3873 fi
3874
3875 # compiler sanity check
3876 check_exec <<EOF
3877 int main(void){ return 0; }
3878 EOF
3879 if test "$?" != 0; then
3880     echo "$cc is unable to create an executable file."
3881     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3882         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3883         echo "Only do this if you know what cross compiling means."
3884     fi
3885     die "C compiler test failed."
3886 fi
3887
3888 add_cppflags -D_ISOC99_SOURCE
3889 add_cxxflags -D__STDC_CONSTANT_MACROS
3890 check_cflags -std=c99
3891 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3892 #include <stdlib.h>
3893 EOF
3894 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3895 #include <stdlib.h>
3896 EOF
3897
3898 add_host_cppflags -D_ISOC99_SOURCE
3899 check_host_cflags -std=c99
3900 check_host_cflags -Wall
3901 check_host_cflags -O3
3902
3903 check_64bit(){
3904     arch32=$1
3905     arch64=$2
3906     expr=$3
3907     check_code cc "" "int test[2*($expr) - 1]" &&
3908         subarch=$arch64 || subarch=$arch32
3909 }
3910
3911 case "$arch" in
3912     aarch64|alpha|ia64)
3913         spic=$shared
3914     ;;
3915     mips)
3916         check_64bit mips mips64 '_MIPS_SIM > 1'
3917         spic=$shared
3918     ;;
3919     parisc)
3920         check_64bit parisc parisc64 'sizeof(void *) > 4'
3921         spic=$shared
3922     ;;
3923     ppc)
3924         check_64bit ppc ppc64 'sizeof(void *) > 4'
3925         spic=$shared
3926     ;;
3927     s390)
3928         check_64bit s390 s390x 'sizeof(void *) > 4'
3929         spic=$shared
3930     ;;
3931     sparc)
3932         check_64bit sparc sparc64 'sizeof(void *) > 4'
3933         spic=$shared
3934     ;;
3935     x86)
3936         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3937         if test "$subarch" = "x86_64"; then
3938             spic=$shared
3939         fi
3940     ;;
3941     ppc)
3942         check_cc <<EOF && subarch="ppc64"
3943         int test[(int)sizeof(char*) - 7];
3944 EOF
3945     ;;
3946 esac
3947
3948 enable $subarch
3949 enabled spic && enable_weak pic
3950
3951 # OS specific
3952 case $target_os in
3953     aix)
3954         SHFLAGS=-shared
3955         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3956         enabled shared && add_ldflags -Wl,-brtl
3957         ;;
3958     android)
3959         disable symver
3960         SLIB_INSTALL_NAME='$(SLIBNAME)'
3961         SLIB_INSTALL_LINKS=
3962         # soname not set on purpose
3963         SHFLAGS=-shared
3964         ;;
3965     haiku)
3966         prefix_default="/boot/common"
3967         network_extralibs="-lnetwork"
3968         host_libs=
3969         ;;
3970     sunos)
3971         SHFLAGS='-shared -Wl,-h,$$(@F)'
3972         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3973         network_extralibs="-lsocket -lnsl"
3974         # When using suncc to build, the Solaris linker will mark
3975         # an executable with each instruction set encountered by
3976         # the Solaris assembler.  As our libraries contain their own
3977         # guards for processor-specific code, instead suppress
3978         # generation of the HWCAPS ELF section on Solaris x86 only.
3979         enabled_all suncc x86 &&
3980             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3981             add_ldflags -Wl,-M,mapfile
3982         nm_default='nm -P -g'
3983         ;;
3984     netbsd)
3985         disable symver
3986         oss_indev_extralibs="-lossaudio"
3987         oss_outdev_extralibs="-lossaudio"
3988         enabled gcc || check_ldflags -Wl,-zmuldefs
3989         ;;
3990     openbsd|bitrig)
3991         disable symver
3992         SHFLAGS='-shared'
3993         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3994         SLIB_INSTALL_LINKS=
3995         oss_indev_extralibs="-lossaudio"
3996         oss_outdev_extralibs="-lossaudio"
3997         ;;
3998     dragonfly)
3999         disable symver
4000         ;;
4001     freebsd)
4002         ;;
4003     bsd/os)
4004         add_extralibs -lpoll -lgnugetopt
4005         strip="strip -d"
4006         ;;
4007     darwin)
4008         enabled ppc && add_asflags -force_cpusubtype_ALL
4009         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4010         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4011         strip="${strip} -x"
4012         add_ldflags -Wl,-dynamic,-search_paths_first
4013         SLIBSUF=".dylib"
4014         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4015         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4016         objformat="macho"
4017         enabled x86_64 && objformat="macho64"
4018         enabled_any pic shared ||
4019             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4020         ;;
4021     mingw32*)
4022         if test $target_os = "mingw32ce"; then
4023             disable network
4024         else
4025             target_os=mingw32
4026         fi
4027         LIBTARGET=i386
4028         if enabled x86_64; then
4029             LIBTARGET="i386:x86-64"
4030         elif enabled arm; then
4031             LIBTARGET=arm-wince
4032         fi
4033         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4034         check_ldflags -Wl,--nxcompat
4035         check_ldflags -Wl,--dynamicbase
4036         shlibdir_default="$bindir_default"
4037         SLIBPREF=""
4038         SLIBSUF=".dll"
4039         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4040         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4041         dlltool="${cross_prefix}dlltool"
4042         if check_cmd lib.exe -list; then
4043             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4044             if enabled x86_64; then
4045                 LIBTARGET=x64
4046             fi
4047         elif check_cmd $dlltool --version; then
4048             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4049         fi
4050         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4051         SLIB_INSTALL_LINKS=
4052         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4053         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4054         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
4055         objformat="win32"
4056         ranlib=:
4057         enable dos_paths
4058         ;;
4059     win32|win64)
4060         disable symver
4061         if enabled shared; then
4062             # Link to the import library instead of the normal static library
4063             # for shared libs.
4064             LD_LIB='%.lib'
4065             # Cannot build both shared and static libs with MSVC or icl.
4066             disable static
4067         fi
4068         shlibdir_default="$bindir_default"
4069         SLIBPREF=""
4070         SLIBSUF=".dll"
4071         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4072         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4073         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4074         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4075         SLIB_INSTALL_LINKS=
4076         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4077         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4078         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4079         objformat="win32"
4080         ranlib=:
4081         enable dos_paths
4082         ;;
4083     cygwin*)
4084         target_os=cygwin
4085         shlibdir_default="$bindir_default"
4086         SLIBPREF="cyg"
4087         SLIBSUF=".dll"
4088         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4089         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4090         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4091         SLIB_INSTALL_LINKS=
4092         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4093         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4094         objformat="win32"
4095         enable dos_paths
4096         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4097         ;;
4098     *-dos|freedos|opendos)
4099         network_extralibs="-lsocket"
4100         objformat="coff"
4101         enable dos_paths
4102         add_cppflags -U__STRICT_ANSI__
4103         ;;
4104     linux)
4105         enable dv1394
4106         ;;
4107     irix*)
4108         target_os=irix
4109         ranlib="echo ignoring ranlib"
4110         ;;
4111     os/2*)
4112         strip="lxlite -CS"
4113         ln_s="cp -f"
4114         objformat="aout"
4115         add_cppflags -D_GNU_SOURCE
4116         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4117         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4118         LIBSUF="_s.a"
4119         SLIBPREF=""
4120         SLIBSUF=".dll"
4121         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4122         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4123         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4124             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
4125             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4126             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4127             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4128             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
4129         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4130             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4131         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4132         enable dos_paths
4133         enable_weak os2threads
4134         ;;
4135     gnu/kfreebsd)
4136         add_cppflags -D_BSD_SOURCE
4137         ;;
4138     gnu)
4139         ;;
4140     qnx)
4141         add_cppflags -D_QNX_SOURCE
4142         network_extralibs="-lsocket"
4143         ;;
4144     symbian)
4145         SLIBSUF=".dll"
4146         enable dos_paths
4147         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4148         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4149         add_ldflags -Wl,--target1-abs,--no-undefined \
4150                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4151                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4152         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4153                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4154                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4155         ;;
4156     osf1)
4157         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4158         ;;
4159     minix)
4160         ;;
4161     plan9)
4162         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4163                      -D_REENTRANT_SOURCE        \
4164                      -D_RESEARCH_SOURCE         \
4165                      -DFD_SETSIZE=96            \
4166                      -DHAVE_SOCK_OPTS
4167         add_compat strtod.o strtod=avpriv_strtod
4168         network_extralibs='-lbsd'
4169         exeobjs=compat/plan9/main.o
4170         disable ffserver
4171         cp_f='cp'
4172         ;;
4173     none)
4174         ;;
4175     *)
4176         die "Unknown OS '$target_os'."
4177         ;;
4178 esac
4179
4180 # determine libc flavour
4181
4182 probe_libc(){
4183     pfx=$1
4184     pfx_no_=${pfx%_}
4185     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4186     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4187         eval ${pfx}libc_type=uclibc
4188         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4189     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4190         eval ${pfx}libc_type=glibc
4191         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4192     # MinGW headers can be installed on Cygwin, so check for newlib first.
4193     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4194         eval ${pfx}libc_type=newlib
4195         add_${pfx}cppflags -U__STRICT_ANSI__
4196     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4197     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4198         eval ${pfx}libc_type=mingw64
4199         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4200             add_compat msvcrt/snprintf.o
4201             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4202         fi
4203         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4204         eval test \$${pfx_no_}cc_type = "gcc" &&
4205             add_${pfx}cppflags -D__printf__=__gnu_printf__
4206     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4207          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4208         eval ${pfx}libc_type=mingw32
4209         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4210             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4211             die "ERROR: MinGW32 runtime version must be >= 3.15."
4212         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4213         eval test \$${pfx_no_}cc_type = "gcc" &&
4214             add_${pfx}cppflags -D__printf__=__gnu_printf__
4215     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4216         eval ${pfx}libc_type=msvcrt
4217         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4218         # 0x601 by default unless something else is set by the user.
4219         # This can easily lead to us detecting functions only present
4220         # in such new versions and producing binaries requiring windows 7.0.
4221         # Therefore explicitly set the default to XP unless the user has
4222         # set something else on the command line.
4223         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4224             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4225     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4226         eval ${pfx}libc_type=klibc
4227     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4228         eval ${pfx}libc_type=bionic
4229     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4230         eval ${pfx}libc_type=solaris
4231         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4232     # FFmpeg needs a POSIX.1-2001/XSI compliant C library
4233     else
4234         add_${pfx}cppflags -D_XOPEN_SOURCE=600
4235     fi
4236 }
4237
4238 probe_libc
4239 test -n "$libc_type" && enable libc_$libc_type
4240 probe_libc host_
4241 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4242
4243 case $libc_type in
4244     bionic)
4245         add_compat strtod.o strtod=avpriv_strtod
4246         ;;
4247     msvcrt)
4248         add_compat strtod.o strtod=avpriv_strtod
4249         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4250                                      _snprintf=avpriv_snprintf  \
4251                                      vsnprintf=avpriv_vsnprintf
4252         ;;
4253 esac
4254
4255 # hacks for compiler/libc/os combinations
4256
4257 if enabled_all tms470 libc_glibc; then
4258     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4259     add_cppflags -D__USER_LABEL_PREFIX__=
4260     add_cppflags -D__builtin_memset=memset
4261     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4262     add_cflags   -pds=48    # incompatible redefinition of macro
4263 fi
4264
4265 if enabled_all ccc libc_glibc; then
4266     add_ldflags -Wl,-z,now  # calls to libots crash without this
4267 fi
4268
4269 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4270     add_cppflags '-I\$(SRC_PATH)/compat/float'
4271
4272 esc(){
4273     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4274 }
4275
4276 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4277
4278 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4279
4280 set_default $PATHS_LIST
4281 set_default nm
4282
4283 # we need to build at least one lib type
4284 if ! enabled_any static shared; then
4285     cat <<EOF
4286 At least one library type must be built.
4287 Specify --enable-static to build the static libraries or --enable-shared to
4288 build the shared libraries as well. To only build the shared libraries specify
4289 --disable-static in addition to --enable-shared.
4290 EOF
4291     exit 1;
4292 fi
4293
4294 die_license_disabled() {
4295     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4296 }
4297
4298 die_license_disabled_gpl() {
4299     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4300 }
4301
4302 die_license_disabled gpl frei0r
4303 die_license_disabled gpl libcdio
4304 die_license_disabled gpl libsmbclient
4305 die_license_disabled gpl libutvideo
4306 die_license_disabled gpl libvidstab
4307 die_license_disabled gpl libx264
4308 die_license_disabled gpl libx265
4309 die_license_disabled gpl libxavs
4310 die_license_disabled gpl libxvid
4311 die_license_disabled gpl libzvbi
4312 die_license_disabled gpl x11grab
4313
4314 die_license_disabled nonfree libaacplus
4315 die_license_disabled nonfree libfaac
4316 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4317 enabled gpl && die_license_disabled_gpl nonfree openssl
4318
4319 die_license_disabled version3 libopencore_amrnb
4320 die_license_disabled version3 libopencore_amrwb
4321 die_license_disabled version3 libsmbclient
4322 die_license_disabled version3 libvo_aacenc
4323 die_license_disabled version3 libvo_amrwbenc
4324
4325 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4326
4327 disabled optimizations || check_cflags -fomit-frame-pointer
4328
4329 enable_weak_pic() {
4330     disabled pic && return
4331     enable pic
4332     add_cppflags -DPIC
4333     case "$target_os" in
4334     mingw*|cygwin*)
4335         ;;
4336     *)
4337         add_cflags -fPIC
4338         ;;
4339     esac
4340     add_asflags  -fPIC
4341 }
4342
4343 enabled pic && enable_weak_pic
4344
4345 check_cc <<EOF || die "Symbol mangling check failed."
4346 int ff_extern;
4347 EOF
4348 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4349 extern_prefix=${sym%%ff_extern*}
4350
4351 check_cc <<EOF && enable_weak inline_asm
4352 void foo(void) { __asm__ volatile ("" ::); }
4353 EOF
4354
4355 _restrict=
4356 for restrict_keyword in restrict __restrict__ __restrict; do
4357     check_cc <<EOF && _restrict=$restrict_keyword && break
4358 void foo(char * $restrict_keyword p);
4359 EOF
4360 done
4361
4362 check_cc <<EOF && enable pragma_deprecated
4363 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4364 EOF
4365
4366 check_cc <<EOF && enable attribute_packed
4367 struct { int x; } __attribute__((packed)) x;
4368 EOF
4369
4370 check_cc <<EOF && enable attribute_may_alias
4371 union { int x; } __attribute__((may_alias)) x;
4372 EOF
4373
4374 check_cc <<EOF || die "endian test failed"
4375 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4376 EOF
4377 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4378
4379 if  [ "$cpu" = "power7" ] || [ "$cpu" = "power8" ] ;then
4380     if ! enabled bigendian ;then
4381         enable vsx
4382     fi
4383 fi
4384
4385 check_gas() {
4386     log "check_gas using '$as' as AS"
4387     # :vararg is used on aarch64, arm and ppc altivec
4388     check_as <<EOF || return 1
4389 .macro m n, y:vararg=0
4390 \n: .int \y
4391 .endm
4392 m x
4393 EOF
4394     # .altmacro is only used in arm asm
4395     ! enabled arm || check_as <<EOF || return 1
4396 .altmacro
4397 EOF
4398     enable gnu_as
4399     return 0
4400 }
4401
4402 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4403     nogas=:
4404     enabled_any arm aarch64 && nogas=die
4405     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
4406     as_noop=-v
4407
4408     case $as_type in
4409         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4410         gcc)  gaspp_as_type=gas ;;
4411         *)    gaspp_as_type=$as_type ;;
4412     esac
4413
4414     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4415
4416     test "${as#*gas-preprocessor.pl}" != "$as" ||
4417     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
4418         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
4419
4420     if ! check_gas ; then
4421         as=${gas:=$as}
4422         check_gas || \
4423             $nogas "GNU assembler not found, install/update gas-preprocessor"
4424     fi
4425
4426     check_as <<EOF && enable as_func
4427 .func test
4428 .endfunc
4429 EOF
4430 fi
4431
4432 check_inline_asm inline_asm_labels '"1:\n"'
4433
4434 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4435
4436 if enabled aarch64; then
4437     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4438     # internal assembler in clang 3.3 does not support this instruction
4439     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4440     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4441
4442     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4443
4444 elif enabled alpha; then
4445
4446     check_cflags -mieee
4447
4448 elif enabled arm; then
4449
4450     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4451 float func(float a, float b){ return a+b; }
4452 EOF
4453
4454     enabled thumb && check_cflags -mthumb || check_cflags -marm
4455
4456     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4457         enable vfp_args
4458     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4459         case "${cross_prefix:-$cc}" in
4460             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4461             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4462 __asm__ (".eabi_attribute 28, 1");
4463 int main(void) { return 0; }
4464 EOF
4465         esac
4466         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4467     fi
4468
4469     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4470     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4471     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4472     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4473     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4474     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4475     enabled setend  && check_insn setend  'setend be'
4476
4477     [ $target_os = linux ] || [ $target_os = android ] ||
4478         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4479             $ARCH_EXT_LIST_ARM
4480
4481     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4482
4483     check_as <<EOF && enable as_dn_directive
4484 ra .dn d0.i16
4485 .unreq ra
4486 EOF
4487
4488     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4489
4490 elif enabled mips; then
4491
4492     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4493     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
4494      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
4495     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4496      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4497     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4498      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4499     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4500      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4501
4502 elif enabled parisc; then
4503
4504     if enabled gcc; then
4505         case $($cc -dumpversion) in
4506             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4507         esac
4508     fi
4509
4510 elif enabled ppc; then
4511
4512     enable local_aligned_8 local_aligned_16 local_aligned_32
4513
4514     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4515     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4516     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4517     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4518
4519     # AltiVec flags: The FSF version of GCC differs from the Apple version
4520     if enabled altivec; then
4521         check_cflags -maltivec -mabi=altivec &&
4522         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4523         check_cflags -faltivec
4524
4525         # check if our compiler supports Motorola AltiVec C API
4526         check_cc <<EOF || disable altivec
4527 $inc_altivec_h
4528 int main(void) {
4529     vector signed int v1 = (vector signed int) { 0 };
4530     vector signed int v2 = (vector signed int) { 1 };
4531     v1 = vec_add(v1, v2);
4532     return 0;
4533 }
4534 EOF
4535
4536         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4537     fi
4538
4539     if enabled vsx; then
4540         check_cflags -mvsx
4541     fi
4542 elif enabled x86; then
4543
4544     check_builtin rdtsc    intrin.h   "__rdtsc()"
4545     check_builtin mm_empty mmintrin.h "_mm_empty()"
4546
4547     enable local_aligned_8 local_aligned_16 local_aligned_32
4548
4549     # check whether EBP is available on x86
4550     # As 'i' is stored on the stack, this program will crash
4551     # if the base pointer is used to access it because the
4552     # base pointer is cleared in the inline assembly code.
4553     check_exec_crash <<EOF && enable ebp_available
4554 volatile int i=0;
4555 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4556 return i;
4557 EOF
4558
4559     # check whether EBX is available on x86
4560     check_inline_asm ebx_available '""::"b"(0)' &&
4561         check_inline_asm ebx_available '"":::"%ebx"'
4562
4563     # check whether xmm clobbers are supported
4564     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4565
4566     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4567         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4568
4569     # check whether binutils is new enough to compile SSSE3/MMXEXT
4570     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4571     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4572
4573     if ! disabled_any asm mmx yasm; then
4574         if check_cmd $yasmexe --version; then
4575             enabled x86_64 && yasm_extra="-m amd64"
4576             yasm_debug="-g dwarf2"
4577         elif check_cmd nasm -v; then
4578             yasmexe=nasm
4579             yasm_debug="-g -F dwarf"
4580             if enabled x86_64; then
4581                 case "$objformat" in
4582                     elf)   objformat=elf64 ;;
4583                     win32) objformat=win64 ;;
4584                 esac
4585             fi
4586         fi
4587
4588         YASMFLAGS="-f $objformat $yasm_extra"
4589         enabled pic               && append YASMFLAGS "-DPIC"
4590         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4591         case "$objformat" in
4592             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4593         esac
4594
4595         check_yasm "movbe ecx, [5]" && enable yasm ||
4596             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4597         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4598         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4599         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4600         check_yasm "CPU amdnop" || disable cpunop
4601     fi
4602
4603     case "$cpu" in
4604         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4605             disable fast_clz
4606         ;;
4607     esac
4608
4609 fi
4610
4611 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4612
4613 check_ldflags -Wl,--as-needed
4614
4615 if check_func dlopen; then
4616     ldl=
4617 elif check_func dlopen -ldl; then
4618     ldl=-ldl
4619 fi
4620
4621 if ! disabled network; then
4622     check_func getaddrinfo $network_extralibs
4623     check_func getservbyport $network_extralibs
4624     check_func inet_aton $network_extralibs
4625
4626     check_type netdb.h "struct addrinfo"
4627     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4628     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4629     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4630     check_type poll.h "struct pollfd"
4631     check_type netinet/sctp.h "struct sctp_event_subscribe"
4632     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4633     check_type netinet/in.h "struct sockaddr_in6"
4634     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4635     check_type "sys/types.h sys/socket.h" socklen_t
4636
4637     # Prefer arpa/inet.h over winsock2
4638     if check_header arpa/inet.h ; then
4639         check_func closesocket
4640     elif check_header winsock2.h ; then
4641         check_func_headers winsock2.h closesocket -lws2 &&
4642             network_extralibs="-lws2" ||
4643         { check_func_headers winsock2.h closesocket -lws2_32 &&
4644             network_extralibs="-lws2_32"; } || disable winsock2_h network
4645         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4646
4647         check_type ws2tcpip.h socklen_t
4648         check_type ws2tcpip.h "struct addrinfo"
4649         check_type ws2tcpip.h "struct group_source_req"
4650         check_type ws2tcpip.h "struct ip_mreq_source"
4651         check_type ws2tcpip.h "struct ipv6_mreq"
4652         check_type winsock2.h "struct pollfd"
4653         check_struct winsock2.h "struct sockaddr" sa_len
4654         check_type ws2tcpip.h "struct sockaddr_in6"
4655         check_type ws2tcpip.h "struct sockaddr_storage"
4656     else
4657         disable network
4658     fi
4659 fi
4660
4661 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4662 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4663 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4664 check_builtin sarestart signal.h "SA_RESTART"
4665 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4666
4667 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4668 check_func  ${malloc_prefix}memalign            && enable memalign
4669 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4670
4671 check_func  access
4672 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt; }
4673 check_func  fcntl
4674 check_func  fork
4675 check_func  gethrtime
4676 check_func  getopt
4677 check_func  getrusage
4678 check_func  gettimeofday
4679 check_func  isatty
4680 check_func  localtime_r
4681 check_func  mach_absolute_time
4682 check_func  mkstemp
4683 check_func  mmap
4684 check_func  mprotect
4685 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4686 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt; }
4687 check_func  sched_getaffinity
4688 check_func  setrlimit
4689 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4690 check_func  strerror_r
4691 check_func  sysconf
4692 check_func  sysctl
4693 check_func  usleep
4694
4695 check_func_headers conio.h kbhit
4696 check_func_headers io.h setmode
4697 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4698 check_func_headers stdlib.h getenv
4699
4700 check_func_headers windows.h CoTaskMemFree -lole32
4701 check_func_headers windows.h GetProcessAffinityMask
4702 check_func_headers windows.h GetProcessTimes
4703 check_func_headers windows.h GetSystemTimeAsFileTime
4704 check_func_headers windows.h MapViewOfFile
4705 check_func_headers windows.h PeekNamedPipe
4706 check_func_headers windows.h SetConsoleTextAttribute
4707 check_func_headers windows.h Sleep
4708 check_func_headers windows.h VirtualAlloc
4709 check_func_headers glob.h glob
4710 enabled xlib &&
4711     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4712
4713 check_header cl/cl.h
4714 check_header direct.h
4715 check_header dlfcn.h
4716 check_header dxva.h
4717 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4718 check_header io.h
4719 check_header libcrystalhd/libcrystalhd_if.h
4720 check_header mach/mach_time.h
4721 check_header malloc.h
4722 check_header poll.h
4723 check_header sys/mman.h
4724 check_header sys/param.h
4725 check_header sys/resource.h
4726 check_header sys/select.h
4727 check_header sys/time.h
4728 check_header sys/un.h
4729 check_header termios.h
4730 check_header unistd.h
4731 check_header vdpau/vdpau.h
4732 check_header vdpau/vdpau_x11.h
4733 check_header VideoDecodeAcceleration/VDADecoder.h
4734 check_header windows.h
4735 check_header X11/extensions/XvMClib.h
4736 check_header asm/types.h
4737
4738 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4739 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4740 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4741
4742 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4743
4744 if ! disabled w32threads && ! enabled pthreads; then
4745     check_func_headers "windows.h process.h" _beginthreadex &&
4746         enable w32threads || disable w32threads
4747 fi
4748
4749 # check for some common methods of building with pthread support
4750 # do this before the optional library checks as some of them require pthreads
4751 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4752     enable pthreads
4753     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
4754         add_cflags -pthread
4755         add_extralibs -pthread
4756     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
4757         add_cflags -pthreads
4758         add_extralibs -pthreads
4759     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
4760         add_cflags -ldl -pthread
4761         add_extralibs -ldl -pthread
4762     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
4763         add_extralibs -lpthreadGC2
4764     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
4765         :
4766     elif ! check_func pthread_join && ! check_func pthread_create; then
4767         disable pthreads
4768     fi
4769     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
4770 fi
4771
4772
4773 if enabled pthreads; then
4774   check_func pthread_cancel
4775 fi
4776
4777 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4778 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4779 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
4780
4781 check_lib math.h sin -lm && LIBM="-lm"
4782 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4783
4784 atan2f_args=2
4785 ldexpf_args=2
4786 powf_args=2
4787 fminf_args=2
4788
4789 for func in $MATH_FUNCS; do
4790     eval check_mathfunc $func \${${func}_args:-1}
4791 done
4792
4793 # these are off by default, so fail if requested and not available
4794 enabled avfoundation_indev && { check_header_oc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
4795 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4796                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4797                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4798 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
4799 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4800 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4801 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
4802 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4803 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4804 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4805 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
4806 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4807 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4808                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4809                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4810 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4811 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4812 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4813 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"
4814 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4815 enabled fontconfig        && enable libfontconfig
4816 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4817 enabled libfreetype       && require_libfreetype
4818 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
4819 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
4820 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4821                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4822                                done || die "ERROR: libgsm not found"; }
4823 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4824 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
4825 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4826 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
4827 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4828 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4829 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4830 enabled libopenjpeg       && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4831                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4832                                die "ERROR: libopenjpeg not found"; }
4833 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4834 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
4835 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
4836 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4837 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4838 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
4839 enabled libsmbclient      && { { check_pkg_config smbclient libsmbclient.h smbc_init &&
4840                                  require_pkg_config smbclient libsmbclient.h smbc_init; } ||
4841                                  require smbclient libsmbclient.h smbc_init -lsmbclient; }
4842 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
4843 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
4844 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4845 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4846     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4847     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4848 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4849 enabled libtwolame        && require libtwolame twolame.h&