configure 67.5 KB
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#!/bin/sh
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#
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# FFmpeg configure script
#
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# Copyright (c) 2000-2002 Fabrice Bellard
# Copyright (c) 2005-2008 Diego Biurrun
# Copyright (c) 2005-2008 Mans Rullgard
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#
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# Prevent locale nonsense from breaking basic text processing.
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LC_ALL=C
export LC_ALL
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# make sure we are running under a compatible shell
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# try to make this part work with most shells

try_exec(){
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    echo "Trying shell $1"
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    type "$1" > /dev/null 2>&1 && exec "$@"
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}

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unset foo
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(: ${foo%%bar}) 2> /dev/null
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E1="$?"

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(: ${foo?}) 2> /dev/null
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E2="$?"

if test "$E1" != 0 || test "$E2" = 0; then
    echo "Broken shell detected.  Trying alternatives."
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    export FF_CONF_EXEC
    if test "0$FF_CONF_EXEC" -lt 1; then
        FF_CONF_EXEC=1
        try_exec bash "$0" "$@"
    fi
    if test "0$FF_CONF_EXEC" -lt 2; then
        FF_CONF_EXEC=2
        try_exec ksh "$0" "$@"
    fi
    if test "0$FF_CONF_EXEC" -lt 3; then
        FF_CONF_EXEC=3
        try_exec /usr/xpg4/bin/sh "$0" "$@"
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    fi
    echo "No compatible shell script interpreter found."
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    echo "This configure script requires a POSIX-compatible shell"
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    echo "such as bash or ksh."
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    echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
    echo "Instead, install a working POSIX-compatible shell."
    echo "Disabling this configure test will create a broken FFmpeg."
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    if test "$BASH_VERSION" = '2.04.0(1)-release'; then
        echo "This bash version ($BASH_VERSION) is broken on your platform."
        echo "Upgrade to a later version if available."
    fi
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    exit 1
fi

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show_help(){
  echo "Usage: configure [options]"
  echo "Options: [defaults in brackets after descriptions]"
  echo
  echo "Standard options:"
  echo "  --help                   print this message"
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  echo "  --logfile=FILE           log tests and output to FILE [config.err]"
  echo "  --disable-logging        do not log configure debug information"
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  echo "  --prefix=PREFIX          install in PREFIX [$prefix]"
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  echo "  --bindir=DIR             install binaries in DIR [PREFIX/bin]"
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  echo "  --libdir=DIR             install libs in DIR [PREFIX/lib]"
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  echo "  --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]"
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  echo "  --incdir=DIR             install includes in DIR [PREFIX/include]"
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  echo "  --mandir=DIR             install man page in DIR [PREFIX/share/man]"
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  echo "  --enable-static          build static libraries [default=yes]"
  echo "  --disable-static         do not build static libraries [default=no]"
  echo "  --enable-shared          build shared libraries [default=no]"
  echo "  --disable-shared         do not build shared libraries [default=yes]"
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  echo "  --enable-gpl             allow use of GPL code, the resulting libav*"
  echo "                           and ffmpeg will be under GPL [default=no]"
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  echo "  --enable-nonfree         allow use of nonfree code, the resulting libav*"
  echo "                           and ffmpeg will be unredistributable [default=no]"
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  echo "  --enable-postproc        enable GPLed postprocessing support [default=no]"
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  echo "  --enable-swscale         software scaler support [default=no]"
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  echo "  --enable-avfilter        video filter support (replaces vhook) [default=no]"
  echo "  --enable-avfilter-lavf   video filters dependant on avformat [default=no]"
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  echo "  --enable-beosthreads     use BeOS threads [default=no]"
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  echo "  --enable-os2threads      use OS/2 threads [default=no]"
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  echo "  --enable-pthreads        use pthreads [default=no]"
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  echo "  --enable-w32threads      use Win32 threads [default=no]"
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  echo "  --enable-x11grab         enable X11 grabbing [default=no]"
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  echo
  echo "External library support:"
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  echo "  --enable-mlib            use Sun medialib [default=no]"
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  echo "  --enable-avisynth        allow reading AVISynth script files [default=no]"
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  echo "  --enable-libamr-nb       enable libamr-nb floating point audio codec"
  echo "  --enable-libamr-wb       enable libamr-wb floating point audio codec"
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  echo "  --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394"
  echo "                           and libraw1394 [default=no]"
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  echo "  --enable-libdirac        enable Dirac support via libdirac [default=no]"
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  echo "  --enable-libfaac         enable FAAC support via libfaac [default=no]"
  echo "  --enable-libfaad         enable FAAD support via libfaad [default=no]"
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  echo "  --enable-libfaadbin      open libfaad.so.0 at runtime [default=no]"
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  echo "  --enable-libgsm          enable GSM support via libgsm [default=no]"
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  echo "  --enable-libmp3lame      enable MP3 encoding via libmp3lame [default=no]"
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  echo "  --enable-libnut          enable NUT (de)muxing via libnut,"
  echo "                           native demuxer exists [default=no]"
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  echo "  --enable-libschroedinger enable Dirac support via libschroedinger [default=no]"
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  echo "  --enable-libspeex        enable Speex decoding via libspeex [default=no]"
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  echo "  --enable-libtheora       enable Theora encoding via libtheora [default=no]"
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  echo "  --enable-libvorbis       enable Vorbis encoding via libvorbis,"
  echo "                           native implementation exists [default=no]"
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  echo "  --enable-libx264         enable H.264 encoding via x264 [default=no]"
  echo "  --enable-libxvid         enable Xvid encoding via xvidcore,"
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  echo "                           native MPEG-4/Xvid encoder exists [default=no]"
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  echo ""
  echo "Advanced options (experts only):"
  echo "  --source-path=PATH       path to source code [$source_path]"
  echo "  --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]"
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  echo "  --enable-cross-compile   assume a cross-compiler is used"
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  echo "  --target-os=OS           compiler targets OS [$target_os]"
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  echo "  --cc=CC                  use C compiler CC [$cc]"
  echo "  --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]"
  echo "  --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]"
  echo "  --extra-libs=ELIBS       add ELIBS [$ELIBS]"
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  echo "  --extra-version=STRING   version string suffix []"
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  echo "  --build-suffix=SUFFIX    suffix for application specific build []"
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  echo "  --arch=ARCH              select architecture  [$arch]"
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  echo "  --cpu=CPU                selects the minimum cpu required (affects"
  echo "                           instruction selection, may crash on older CPUs)"
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  echo "  --enable-powerpc-perf    enable performance report on PPC"
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  echo "                           (requires enabling PMC)"
  echo "  --disable-mmx            disable MMX usage"
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  echo "  --disable-mmx2           disable MMX2 usage"
  echo "  --disable-ssse3          disable SSSE3 usage"
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  echo "  --disable-armv5te        disable armv5te usage"
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  echo "  --disable-armv6          disable armv6 usage"
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  echo "  --disable-armvfp         disable ARM VFP usage"
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  echo "  --disable-iwmmxt         disable iwmmxt usage"
  echo "  --disable-altivec        disable AltiVec usage"
  echo "  --disable-network        disable network support [default=no]"
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  echo "  --disable-ipv6           disable ipv6 support [default=no]"
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  echo "  --disable-zlib           disable zlib [default=no]"
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  echo "  --disable-bzlib          disable bzlib [default=no]"
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  echo "  --disable-vhook          disable video hooking support"
  echo "  --disable-mpegaudio-hp   faster (but less accurate)"
  echo "                           MPEG audio decoding [default=no]"
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  echo "  --enable-gray            enable full grayscale support (slower color)"
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  echo "  --disable-ffmpeg         disable ffmpeg build"
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  echo "  --disable-ffserver       disable ffserver build"
  echo "  --disable-ffplay         disable ffplay build"
  echo "  --enable-small           optimize for size instead of speed"
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  echo "  --enable-hardcoded-tables use hardcoded tables instead of runtime generation"
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  echo "  --enable-memalign-hack   emulate memalign, interferes with memory debuggers"
  echo "  --disable-encoder=NAME   disables encoder NAME"
  echo "  --enable-encoder=NAME    enables encoder NAME"
  echo "  --disable-decoder=NAME   disables decoder NAME"
  echo "  --enable-decoder=NAME    enables decoder NAME"
  echo "  --disable-encoders       disables all encoders"
  echo "  --disable-decoders       disables all decoders"
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  echo "  --disable-muxer=NAME     disables muxer NAME"
  echo "  --enable-muxer=NAME      enables muxer NAME"
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  echo "  --disable-muxers         disables all muxers"
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  echo "  --disable-demuxer=NAME   disables demuxer NAME"
  echo "  --enable-demuxer=NAME    enables demuxer NAME"
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  echo "  --disable-demuxers       disables all demuxers"
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  echo "  --enable-parser=NAME     enables parser NAME"
  echo "  --disable-parser=NAME    disables parser NAME"
  echo "  --disable-parsers        disables all parsers"
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  echo "  --enable-bsf=NAME        enables bitstream filter NAME"
  echo "  --disable-bsf=NAME       disables bitstream filter NAME"
  echo "  --disable-bsfs           disables all bitstream filters"
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  echo "  --enable-protocol=NAME   enables protocol NAME"
  echo "  --disable-protocol=NAME  disables protocol NAME"
  echo "  --disable-protocols      disables all protocols"
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  echo "  --disable-devices        disables all devices"
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  echo "  --enable-filter=NAME     enables filter NAME"
  echo "  --disable-filter=NAME    disables filter NAME"
  echo "  --disable-filters        disables all filters"
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  echo "  --list-decoders          show all available decoders"
  echo "  --list-encoders          show all available encoders"
  echo "  --list-muxers            show all available muxers"
  echo "  --list-demuxers          show all available demuxers"
  echo "  --list-parsers           show all available parsers"
  echo "  --list-protocols         show all available protocols"
  echo "  --list-bsfs              show all available bitstream filters"
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  echo "  --list-indevs            show all available input devices"
  echo "  --list-outdevs           show all available output devices"
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  echo "  --list-filters           show all available filters"
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  echo
  echo "Developer options (useful when working on FFmpeg itself):"
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  echo "  --disable-debug          disable debugging symbols"
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  echo "  --enable-debug=LEVEL     set the debug level [$debuglevel]"
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  echo "  --enable-gprof           enable profiling with gprof [$gprof]"
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  echo "  --disable-optimizations  disable compiler optimizations"
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  echo "  --enable-extra-warnings  enable more compiler warnings"
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  echo "  --disable-stripping      disable stripping of executables and shared libraries"
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  echo ""
  echo "NOTE: Object files are built at the place where configure is launched."
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  exit 0
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}
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log(){
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    echo "$@" >> $logfile
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}

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log_file(){
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    log BEGIN $1
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    pr -n -t $1 >> $logfile
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    log END $1
}

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echolog(){
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    log "$@"
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    echo "$@"
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}

die(){
    echolog "$@"
    cat <<EOF
If you think configure made a mistake, make sure you are using the latest
version from SVN.  If the latest version fails, report the problem to the
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ffmpeg-user@mplayerhq.hu mailing list or IRC #ffmpeg on irc.freenode.net.
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EOF
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    if disabled logging; then
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        cat <<EOF
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Rerun configure with logging enabled (do not use --disable-logging), and
include the log this produces with your report.
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EOF
    else
cat <<EOF
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Include the log file "$logfile" produced by configure as this will help
solving the problem.
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EOF
    fi
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    rm -f $TMPC $TMPE $TMPH $TMPO $TMPS $TMPSH
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    exit 1
}

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# Avoid locale weirdness, besides we really just want to translate ASCII.
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toupper(){
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    echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
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}

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tolower(){
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    echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
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}

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set_all(){
    value=$1
    shift
    for var in $*; do
        eval $var=$value
    done
}

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pushvar(){
    for var in $*; do
        eval level=\${${var}_level:=0}
        eval ${var}_${level}="\$$var"
        eval ${var}_level=$(($level+1))
    done
}

popvar(){
    for var in $*; do
        eval level=\${${var}_level:-0}
        test $level = 0 && continue
        eval level=$(($level-1))
        eval $var="\${${var}_${level}}"
        eval ${var}_level=$level
        eval unset ${var}_${level}
    done
}

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enable(){
    set_all yes $*
}

disable(){
    set_all no $*
}

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do_enable_deep(){
    for var; do
        enabled $var && continue
        eval sel="\$${var}_select"
        pushvar var
        enable_deep $sel
        popvar var
    done
}

enable_deep(){
    do_enable_deep $*
    enable $*
}

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enabled(){
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    test "${1#!}" = "$1" && op== || op=!=
    eval test "x\$${1#!}" $op "xyes"
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}

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disabled(){
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    test "${1#!}" = "$1" && op== || op=!=
    eval test "x\$${1#!}" $op "xno"
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}

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enabled_all(){
    for opt; do
        enabled $opt || return 1
    done
}

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disabled_all(){
    for opt; do
        disabled $opt || return 1
    done
}

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enabled_any(){
    for opt; do
        enabled $opt && return 0
    done
}

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disabled_any(){
    for opt; do
        disabled $opt && return 0
    done
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    return 1
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}

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set_default(){
    for opt; do
        eval test -z "\$$opt" && eval $opt=\$${opt}_default
    done
}

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is_in(){
    value=$1
    shift
    for var in $*; do
        [ $var = $value ] && return 0
    done
    return 1
}

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check_deps(){
    for cfg; do
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        cfg="${cfg#!}"
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        enabled ${cfg}_checking && die "Circular dependency for $cfg."
        disabled ${cfg}_checking && continue
        enable ${cfg}_checking

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        eval dep_all="\$${cfg}_deps"
        eval dep_any="\$${cfg}_deps_any"
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        eval dep_sel="\$${cfg}_select"
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        pushvar cfg dep_all dep_any dep_sel
        check_deps $dep_all $dep_any $dep_sel
        popvar cfg dep_all dep_any dep_sel
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        enabled_all  $dep_all || disable $cfg
        enabled_any  $dep_any || disable $cfg
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        disabled_any $dep_sel && disable $cfg
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        if enabled $cfg; then
            eval dep_extralibs="\$${cfg}_extralibs"
            test -n "$dep_extralibs" && add_extralibs $dep_extralibs
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            enable_deep $dep_sel
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        fi

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        disable ${cfg}_checking
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    done
}

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print_config(){
    pfx=$1
    header=$2
    makefile=$3
    shift 3
    for cfg; do
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        ucname="`toupper $cfg`"
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        if enabled $cfg; then
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            echo "#define ${pfx}${ucname} 1" >> $header
            echo "#define ENABLE_${ucname} 1" >> $header
            echo "${pfx}${ucname}=yes" >> $makefile
        else
            echo "#define ENABLE_${ucname} 0" >> $header
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        fi
    done
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}

flags_saved(){
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    (: ${SAVE_CFLAGS?}) 2> /dev/null
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}

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save_flags(){
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    flags_saved && return
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    SAVE_CFLAGS="$CFLAGS"
    SAVE_LDFLAGS="$LDFLAGS"
    SAVE_extralibs="$extralibs"
}

restore_flags(){
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    flags_saved || return
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    CFLAGS="$SAVE_CFLAGS"
    LDFLAGS="$SAVE_LDFLAGS"
    extralibs="$SAVE_extralibs"
    unset SAVE_CFLAGS
    unset SAVE_LDFLAGS
    unset SAVE_extralibs
}

temp_cflags(){
    save_flags
    CFLAGS="$CFLAGS $*"
}

temp_ldflags(){
    save_flags
    LDFLAGS="$LDFLAGS $*"
}

temp_extralibs(){
    save_flags
    extralibs="$extralibs $*"
}

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append(){
    var=$1
    shift
    flags_saved && eval "SAVE_$var=\"\$SAVE_$var $*\""
    eval "$var=\"\$$var $*\""
}

add_cflags(){
    append CFLAGS "$@"
}

add_ldflags(){
    append LDFLAGS "$@"
}

add_extralibs(){
    append extralibs "$@"
}

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check_cmd(){
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    log "$@"
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    "$@" >> $logfile 2>&1
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}

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check_cc(){
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    log check_cc "$@"
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    cat > $TMPC
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    log_file $TMPC
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    check_cmd $cc $CFLAGS "$@" -c -o $TMPO $TMPC
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}

check_cpp(){
    log check_cpp "$@"
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    cat > $TMPC
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    log_file $TMPC
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    check_cmd $cc $CFLAGS "$@" -E -o $TMPO $TMPC
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}

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check_asm(){
    log check_asm "$@"
    name="$1"
    asm="$2"
    shift 2
    check_cc "$@" <<EOF && enable $name || disable $name
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int foo(void){ __asm__ volatile($asm); }
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EOF
}

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check_yasm(){
    log check_yasm "$@"
    echo "$1" > $TMPS
    log_file $TMPS
    shift 1
    check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
}

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check_ld(){
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    log check_ld "$@"
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    check_cc || return
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    flags=''
    libs=''
    for f; do
        test "${f}" = "${f#-l}" && flags="$flags $f" || libs="$libs $f"
    done
    check_cmd $cc $LDFLAGS $flags -o $TMPE $TMPO $extralibs $libs
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}

check_cflags(){
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    log check_cflags "$@"
    check_cc "$@" <<EOF && add_cflags "$@"
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int x;
EOF
}

check_ldflags(){
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    log check_ldflags "$@"
    check_ld "$@" <<EOF && add_ldflags "$@"
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int main(void){ return 0; }
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EOF
}

check_header(){
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    log check_header "$@"
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    header=$1
    shift
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    var=`echo $header | sed 's/[^A-Za-z0-9_]/_/g'`
    disable $var
    check_cpp "$@" <<EOF && enable $var
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#include <$header>
int x;
EOF
}

check_func(){
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    log check_func "$@"
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    func=$1
    shift
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    disable $func
    check_ld "$@" <<EOF && enable $func
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extern int $func();
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int main(void){ $func(); }
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EOF
}

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check_func_headers(){
    log check_func_headers "$@"
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    headers=$1
    func=$2
    shift 2
    disable $func
    incs=""
    for hdr in $headers; do
        incs="$incs
#include <$hdr>"
    done
    check_ld "$@" <<EOF && enable $func
$incs
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int main(int argc, char **argv){
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    (void) $func;
    return 0;
}
EOF
}

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check_cpp_condition(){
    log check_cpp_condition "$@"
    header=$1
    condition=$2
    check_cpp <<EOF
#include <$header>
#if !($condition)
#error "unsatisfied condition: $condition"
#endif
EOF
}

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check_lib(){
    log check_lib "$@"
    header="$1"
    func="$2"
    shift 2
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    temp_extralibs "$@"
    check_header $header && check_func $func && add_extralibs "$@"
    err=$?
    restore_flags
    return $err
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}

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check_lib2(){
    log check_lib2 "$@"
    headers="$1"
    func="$2"
    shift 2
    temp_extralibs "$@"
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    check_func_headers "$headers" $func && add_extralibs "$@"
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    err=$?
    restore_flags
    return $err
}

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check_exec(){
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    check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
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}

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check_exec_crash(){
    code=`cat`

    # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
    # are safe but may not be available everywhere.  Thus we use
    # raise(SIGTERM) instead.  The check is run in a subshell so we
    # can redirect the "Terminated" message from the shell.  SIGBUS
    # is not defined by standard C so it is used conditionally.

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    (check_exec "$@") >> $logfile 2>&1 <<EOF
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#include <signal.h>
static void sighandler(int sig){
    raise(SIGTERM);
}
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int main(void){
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    signal(SIGILL, sighandler);
    signal(SIGFPE, sighandler);
    signal(SIGSEGV, sighandler);
#ifdef SIGBUS
    signal(SIGBUS, sighandler);
#endif
    { $code }
}
EOF
}

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check_type(){
    log check_type "$@"
    headers=$1
    type=$2
    shift 2
    disable $type
    incs=""
    for hdr in $headers; do
        incs="$incs
#include <$hdr>"
    done
    check_cc "$@" <<EOF && enable $type
$incs
$type v;
EOF
}

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require(){
    name="$1"
    header="$2"
    func="$3"
    shift 3
    check_lib $header $func "$@" || die "ERROR: $name not found"
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}

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require2(){
    name="$1"
    headers="$2"
    func="$3"
    shift 3
    check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
}

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check_foo_config(){
    cfg=$1
    pkg=$2
    header=$3
    func=$4
    shift 4
    disable $cfg
    check_cmd ${pkg}-config --version
    err=$?
    if test "$err" = 0; then
        temp_cflags `${pkg}-config --cflags`
        temp_extralibs `${pkg}-config --libs`
        check_lib "$@" $header $func && enable $cfg
    fi
    return $err
}

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apply(){
    file=$1
    shift
    "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
}

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# CONFIG_LIST contains configurable options, while HAVE_LIST is for
# system-dependent things.

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COMPONENT_LIST="
    bsfs
    decoders
    demuxers
    encoders
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    filters
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    indevs
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    muxers
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    outdevs
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    parsers
    protocols
"

CONFIG_LIST="
    $COMPONENT_LIST
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    avfilter
    avfilter_lavf
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    avisynth
    beos_netserver
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    bzlib
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    ffmpeg
    ffplay
    ffserver
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    fft
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    gpl
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    gprof
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    gray
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    hardcoded_tables
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    ipv6
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    libamr_nb
    libamr_wb
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    libdc1394
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    libdirac
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    libfaac
    libfaad
    libfaadbin
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    libgsm
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    libmp3lame
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    libnut
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    libschroedinger
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    libspeex
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    libtheora
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    libvorbis
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    libx264
    libxvid
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    memalign_hack
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    mlib
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    mpegaudio_hp
    network
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    nonfree
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    postproc
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    powerpc_perf
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    small
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    swscale
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    vhook
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    x11grab
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    zlib
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"
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THREADS_LIST='
    beosthreads
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    os2threads
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    pthreads
    w32threads
'

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ARCH_LIST='
    alpha
    armv4l
    bfin
    ia64
    m68k
    mips
    parisc
    powerpc
    s390
    sh4
    sparc
    sparc64
    x86
    x86_32
    x86_64
'

ARCH_EXT_LIST='
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    altivec
    armv5te
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    armv6
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    armvfp
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    iwmmxt
    mmi
    mmx
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    mmx2
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    neon
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    ssse3
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    vis
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'

HAVE_LIST="
    $ARCH_EXT_LIST
    $THREADS_LIST
    altivec_h
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    arpa_inet_h
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    bswap
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    closesocket
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    cmov
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    conio_h
783
    dcbzl
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    dev_bktr_ioctl_bt848_h
    dev_bktr_ioctl_meteor_h
    dev_ic_bt8xx_h
    dev_video_meteor_ioctl_meteor_h
    dev_video_bktr_ioctl_bt848_h
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    dlfcn_h
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    dlopen
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    dos_paths
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    ebp_available
    ebx_available
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    fast_64bit
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    fast_cmov
796
    fast_unaligned
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    fork
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    freetype2
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    gethrtime
800
    GetProcessTimes
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801
    getrusage
802
    imlib2
803
    inet_aton
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    inline_asm
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    libdc1394_1
    libdc1394_2
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    llrint
    lrint
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    lrintf
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    machine_ioctl_bt848_h
    machine_ioctl_meteor_h
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    malloc_h
    memalign
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    mkstemp
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    pld
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    ppc64
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    round
    roundf
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    sdl
    sdl_video_size
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    socklen_t
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    soundcard_h
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    poll_h
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    sys_mman_h
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    sys_resource_h
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    sys_select_h
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    sys_soundcard_h
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    sys_videoio_h
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    termios_h
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    threads
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    winsock2_h
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    yasm
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"
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CMDLINE_SELECT="
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    $ARCH_EXT_LIST
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    $CONFIG_LIST
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    $THREADS_LIST
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    cross_compile
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    debug
    extra_warnings
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    logging
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    optimizations
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    shared
    static
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    stripping
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"
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PATHS_LIST='
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    bindir
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    incdir
    libdir
    mandir
    prefix
    shlibdir
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'

CMDLINE_SET="
    $PATHS_LIST
    arch
    build_suffix
    cc
    cpu
    cross_prefix
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    extra_version
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    logfile
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    source_path
    target_os
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"
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# code dependency declarations

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# architecture extensions
altivec_deps="powerpc"
armv5te_deps="armv4l"
armv6_deps="armv4l"
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armvfp_deps="armv4l"
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iwmmxt_deps="armv4l"
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mmi_deps="mips"
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mmx_deps="x86"
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mmx2_deps="x86 mmx"
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neon_deps="armv4l"
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ssse3_deps="x86"
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vis_deps="sparc"
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# decoders / encoders
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aac_decoder_select="fft"
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ac3_decoder_deps="gpl"
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ac3_decoder_select="fft"
ac3_encoder_select="fft"
atrac3_decoder_select="fft"
cook_decoder_select="fft"
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dxa_decoder_deps="zlib"
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eac3_decoder_deps="gpl"
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eac3_decoder_select="fft"
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flashsv_decoder_deps="zlib"
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flashsv_encoder_deps="zlib"
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imc_decoder_select="fft"
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mlp_decoder_deps="mlp_parser"
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mpeg_xvmc_decoder_deps="xvmc"
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nellymoser_decoder_select="fft"
nellymoser_encoder_select="fft"
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png_decoder_deps="zlib"
png_encoder_deps="zlib"
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qdm2_decoder_select="fft"
vorbis_decoder_select="fft"
vorbis_encoder_select="fft"
wmav1_decoder_select="fft"
wmav1_encoder_select="fft"
wmav2_decoder_select="fft"
wmav2_encoder_select="fft"
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zmbv_decoder_deps="zlib"
zmbv_encoder_deps="zlib"

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# external libraries