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#!/bin/sh
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#
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# ffmpeg configure script (c) 2000, 2001, 2002 Fabrice Bellard
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#
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# set temporary file name
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if test ! -z "$TMPDIR" ; then
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    TMPDIR1="${TMPDIR}"
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elif test ! -z "$TEMPDIR" ; then
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    TMPDIR1="${TEMPDIR}"
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else
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    TMPDIR1="/tmp"
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fi
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TMPC="${TMPDIR1}/ffmpeg-conf-${RANDOM}-$$-${RANDOM}.c"
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TMPO="${TMPDIR1}/ffmpeg-conf-${RANDOM}-$$-${RANDOM}.o"
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TMPS="${TMPDIR1}/ffmpeg-conf-${RANDOM}-$$-${RANDOM}.S"
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TMPH="${TMPDIR1}/ffmpeg-conf-${RANDOM}-$$-${RANDOM}.h"
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# default parameters
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prefix="/usr/local"
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cross_prefix=""
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cc="gcc"
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ar="ar"
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make="make"
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strip="strip"
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cpu=`uname -m`
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mmx="default"
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case "$cpu" in
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  i386|i486|i586|i686|i86pc|BePC)
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    cpu="x86"
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  ;;
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  armv4l)
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    cpu="armv4l"
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  ;;
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  alpha)
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    cpu="alpha"
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  ;;
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  *)
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    cpu="unknown"
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  ;;
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esac
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gprof="no"
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v4l="yes"
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audio_oss="yes"
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network="yes"
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mp3lame="no"
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a52="yes"
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a52bin="no"
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win32="no"
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lshared="no"
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extralibs="-lm"
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simpleidct="yes"
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bigendian="no"
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mpegaudio_hp="yes"
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# OS specific
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targetos=`uname -s`
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case $targetos in
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BeOS)
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prefix="/boot/home/config"
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# helps building libavcodec
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CFLAGS="-O2 -DPIC"
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v4l="no"
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# no need for libm, but the inet stuff
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# Check for BONE
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if (echo $BEINCLUDES|grep 'headers/be/bone' >/dev/null); then
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extralibs="-lbind -lsocket"
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else
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echo "Not sure building for net_server will succeed... good luck."
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extralibs="-lsocket"
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fi ;;
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BSD/OS)
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v4l="no"
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audio_oss="yes"
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extralibs="-lpoll -lgnugetopt -lm"
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make="gmake"
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;;
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*) ;;
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esac
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# find source path
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# XXX: we assume an absolute path is given when launching configure, 
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# except in './configure' case.
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source_path=${0%configure}
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source_path=${source_path%/}
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source_path_used="yes"
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if test -z "$source_path" -o "$source_path" = "." ; then
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    source_path=`pwd`
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    source_path_used="no"
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fi
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for opt do
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  case "$opt" in
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  --prefix=*) prefix=`echo $opt | cut -d '=' -f 2`
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  ;;
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  --source-path=*) source_path=`echo $opt | cut -d '=' -f 2`
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  ;;
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  --cross-prefix=*) cross_prefix=`echo $opt | cut -d '=' -f 2`
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  ;;
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  --cc=*) cc=`echo $opt | cut -d '=' -f 2`
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  ;;
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  --make=*) make=`echo $opt | cut -d '=' -f 2`
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  ;;
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  --extra-cflags=*) CFLAGS="${opt#--extra-cflags=}"
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  ;;
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  --extra-ldflags=*) LDFLAGS=${opt#--extra-ldflags=}
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  ;;
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  --extra-libs=*) extralibs=${opt#--extra-libs=}
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  ;;
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  --cpu=*) cpu=`echo $opt | cut -d '=' -f 2`
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  ;;
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  --disable-mmx) mmx="no"
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  ;;
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  --enable-gprof) gprof="yes"
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  ;;
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  --disable-v4l) v4l="no"
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  ;;
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  --disable-audio-oss) audio_oss="no"
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  ;;
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  --disable-network) network="no"
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  ;;
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  --disable-a52) a52="no"
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  ;;
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  --enable-a52bin) a52bin="yes" ; extralibs="-ldl $extralibs"
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  ;;
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  --enable-mp3lame) mp3lame="yes"
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  ;;
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  --disable-simple_idct) simpleidct="no"
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  ;;
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  --enable-win32) win32="yes"
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  ;;
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  --enable-shared) lshared="yes"
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  ;;
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  --disable-mpegaudio-hp) mpegaudio_hp="no"
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  ;;
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  esac
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done
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# compute mmx state
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if test $mmx = "default"; then
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    if test $cpu = "x86"; then
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        mmx="yes"
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    else
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        mmx="no"
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    fi
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fi
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# Checking for CFLAGS
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if test -z "$CFLAGS"; then
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    CFLAGS="-O2"
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fi
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if test "$win32" = "yes" ; then
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    cross_prefix="i386-mingw32msvc-"
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    v4l="no"
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    audio_oss="no"
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    network="no"
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fi
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# endianness : guess with cpu type. Should also use prefix
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if test "$cpu" = "powerpc"; then
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    bigendian="yes"
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fi
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cc="${cross_prefix}${cc}"
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ar="${cross_prefix}${ar}"
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strip="${cross_prefix}${strip}"
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# ---
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# check availability of some header files
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cat > $TMPC << EOF
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#include <malloc.h>
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int main( void ) { return 0; }
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EOF
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_memalign=no
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_malloc_h=no
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if $cc -o $TMPO $TMPC 2> /dev/null ; then
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_malloc_h=yes
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_memalign=yes
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# check for memalign - atmos
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cat > $TMPC << EOF
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#include <malloc.h>
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int main ( void ) {
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char *string = NULL;
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string = memalign(64, sizeof(char));
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return 0;
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}
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EOF
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$cc -o $TMPO $TMPC 2> /dev/null || _memalign=no
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fi
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if test x"$1" = x"-h" -o x"$1" = x"--help" ; then
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cat << EOF
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Usage: configure [options]
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Options: [defaults in brackets after descriptions]
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EOF
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echo "Standard options:"
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echo "  --help                   print this message"
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echo "  --prefix=PREFIX          install in PREFIX [$prefix]"
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echo "  --enable-mp3lame         enable mp3 encoding via libmp3lame [default=no]"
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echo "  --enable-win32           enable win32 cross compile"
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echo "  --disable-a52            disable GPL'ed A52 support [default=no]"
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echo "  --enable-a52bin          open liba52.so.0 at runtime [default=no]"
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echo "  --enable-shared          build shared libraries [default=no]"
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echo ""
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echo "Advanced options (experts only):"
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echo "  --source-path=PATH       path of source code [$source_path]"
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echo "  --cross-prefix=PREFIX    use PREFIX for compile tools [$cross_prefix]"
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echo "  --cc=CC                  use C compiler CC [$cc]"
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echo "  --make=MAKE              use specified make [$make]"
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echo "  --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]"
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echo "  --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]"
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echo "  --extra-libs=ELIBS       add ELIBS [$ELIBS]"
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echo "  --cpu=CPU                force cpu to CPU  [$cpu]"
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echo "  --disable-mmx            disable mmx usage"
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echo "  --disable-audio-oss      disable OSS audio support [default=no]"
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echo "  --disable-v4l            disable video4linux grabbing [default=no]"
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echo "  --disable-network        disable network support [default=no]"
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echo "  --disable-simple_idct    disable simple IDCT routines [default=no]"
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echo "  --enable-gprof           enable profiling with gprof [$gprof]"
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echo "  --disable-mpegaudio-hp   faster (but less accurate)"
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echo "                           mpegaudio decoding [default=no]"
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echo ""
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echo "NOTE: The object files are build at the place where configure is launched"
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exit 1
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fi
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echo "Install prefix   $prefix"
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echo "Source path      $source_path"
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echo "C compiler       $cc"
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echo "make             $make"
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echo "CPU              $cpu"
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echo "Big Endian       $bigendian"
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echo "MMX enabled      $mmx"
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echo "gprof enabled    $gprof"
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echo "mp3lame enabled  $mp3lame"
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echo "a52 support      $a52"
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echo "a52 dlopened     $a52bin"
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echo "Creating config.mak and config.h"
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echo "# Automatically generated by configure - do not modify" > config.mak
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echo "/* Automatically generated by configure - do not modify */" > $TMPH
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echo "prefix=$prefix" >> config.mak
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echo "MAKE=$make" >> config.mak
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echo "CC=$cc" >> config.mak
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echo "AR=$ar" >> config.mak
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echo "STRIP=$strip" >> config.mak
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echo "OPTFLAGS=$CFLAGS" >> config.mak
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echo "LDFLAGS=$LDFLAGS" >> config.mak
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if test "$cpu" = "x86" ; then
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  echo "TARGET_ARCH_X86=yes" >> config.mak
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  echo "#define ARCH_X86 1" >> $TMPH
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elif test "$cpu" = "armv4l" ; then
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  echo "TARGET_ARCH_ARMV4L=yes" >> config.mak
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  echo "#define ARCH_ARMV4L 1" >> $TMPH
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elif test "$cpu" = "alpha" ; then
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  echo "TARGET_ARCH_ALPHA=yes" >> config.mak
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  echo "#define ARCH_ALPHA 1" >> $TMPH
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elif test "$cpu" = "powerpc" ; then
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  echo "TARGET_ARCH_POWERPC=yes" >> config.mak
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  echo "#define ARCH_POWERPC 1" >> $TMPH
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fi
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if test "$bigendian" = "yes" ; then
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  echo "WORDS_BIGENDIAN=yes" >> config.mak
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  echo "#define WORDS_BIGENDIAN 1" >> $TMPH
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fi
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if test "$mmx" = "yes" ; then
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  echo "TARGET_MMX=yes" >> config.mak
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  echo "#define HAVE_MMX 1" >> $TMPH
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fi
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if test "$gprof" = "yes" ; then
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  echo "TARGET_GPROF=yes" >> config.mak
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  echo "#define HAVE_GPROF 1" >> $TMPH
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fi
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if test "$lshared" = "yes" ; then
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  echo "BUILD_SHARED=yes" >> config.mak
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  echo "PIC=-fPIC" >> config.mak
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fi
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echo "EXTRALIBS=$extralibs" >> config.mak
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echo -n "VERSION=" >>config.mak
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head $source_path/VERSION >>config.mak
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echo "" >>config.mak
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# if you do not want to use encoders, disable that.
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echo "#define CONFIG_ENCODERS 1" >> $TMPH
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echo "CONFIG_ENCODERS=yes" >> config.mak
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# if you do not want to use decoders, disable that.
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echo "#define CONFIG_DECODERS 1" >> $TMPH
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echo "CONFIG_DECODERS=yes" >> config.mak
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# AC3
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if test "$a52" = "yes" ; then
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  echo "#define CONFIG_AC3 1" >> $TMPH
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  echo "CONFIG_AC3=yes" >> config.mak
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  if test "$a52bin" = "yes" ; then
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    echo "#define CONFIG_A52BIN 1" >> $TMPH
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    echo "CONFIG_A52BIN=yes" >> config.mak
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  fi
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fi
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# mpeg audio high precision mode
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if test "$mpegaudio_hp" = "yes" ; then
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  echo "#define CONFIG_MPEGAUDIO_HP 1" >> $TMPH
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fi
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if test "$v4l" = "yes" ; then
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  echo "#define CONFIG_VIDEO4LINUX 1" >> $TMPH
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  echo "CONFIG_VIDEO4LINUX=yes" >> config.mak
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fi
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if test "$audio_oss" = "yes" ; then
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  echo "#define CONFIG_AUDIO_OSS 1" >> $TMPH
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  echo "CONFIG_AUDIO_OSS=yes" >> config.mak
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fi
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if test "$network" = "yes" ; then
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  echo "#define CONFIG_NETWORK 1" >> $TMPH
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  echo "CONFIG_NETWORK=yes" >> config.mak
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fi
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if test "$mp3lame" = "yes" ; then
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  echo "#define CONFIG_MP3LAME 1" >> $TMPH
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  echo "CONFIG_MP3LAME=yes" >> config.mak
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fi
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if test "$win32" = "yes" ; then
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  echo "#define CONFIG_WIN32 1" >> $TMPH
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  echo "CONFIG_WIN32=yes" >> config.mak
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fi
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if test "$_malloc_h" = "yes" ; then
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  echo "#define HAVE_MALLOC_H 1" >> $TMPH
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else
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  echo "#undef  HAVE_MALLOC_H" >> $TMPH
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fi
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if test "$_memalign" = "yes" ; then
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  echo "#define HAVE_MEMALIGN 1" >> $TMPH
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else
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  echo "#undef  HAVE_MEMALIGN" >> $TMPH
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fi
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if test "$simpleidct" = "yes" ; then
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  echo "#define SIMPLE_IDCT 1" >> $TMPH
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fi
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# build tree in object directory if source path is different from current one
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if test "$source_path_used" = "yes" ; then
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    DIRS="libav libavcodec libavcodec/alpha libavcodec/armv4l libavcodec/i386 \
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          libavcodec/liba52 libavcodec/mlib tests"
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    FILES="Makefile libav/Makefile libavcodec/Makefile tests/Makefile"
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    for dir in $DIRS ; do
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            mkdir -p $dir
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    done
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    for f in $FILES ; do
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        ln -sf $source_path/$f $f
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    done
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fi
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echo "SRC_PATH=$source_path" >> config.mak
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diff $TMPH config.h >/dev/null 2>&1
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if test $? -ne 0 ; then
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	mv -f $TMPH config.h
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else
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	echo "config.h is unchanged"
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fi
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rm -f $TMPO $TMPC $TMPS $TMPH