FFmpeg/configure

#!/bin/sh
#
# ffmpeg configure script (c) 2000, 2001, 2002 Fabrice Bellard
#
# set temporary file name
if test ! -z "$TMPDIR" ; then
    TMPDIR1="${TMPDIR}"
elif test ! -z "$TEMPDIR" ; then
    TMPDIR1="${TEMPDIR}"
else
    TMPDIR1="/tmp"
fi

TMPC="${TMPDIR1}/ffmpeg-conf-${RANDOM}-$$-${RANDOM}.c"
TMPO="${TMPDIR1}/ffmpeg-conf-${RANDOM}-$$-${RANDOM}.o"
TMPE="${TMPDIR1}/ffmpeg-conf-${RANDOM}-$$-${RANDOM}"
TMPS="${TMPDIR1}/ffmpeg-conf-${RANDOM}-$$-${RANDOM}.S"
TMPH="${TMPDIR1}/ffmpeg-conf-${RANDOM}-$$-${RANDOM}.h"

# default parameters
prefix="/usr/local"
cross_prefix=""
cc="gcc"
ar="ar"
ranlib="ranlib"
make="make"
strip="strip"
cpu=`uname -m`
mmx="default"
altivec="default"
mmi="default"
case "$cpu" in
  i386|i486|i586|i686|i86pc|BePC)
    cpu="x86"
  ;;
  armv4l)
    cpu="armv4l"
  ;;
  alpha)
    cpu="alpha"
  ;;
  "Power Macintosh"|ppc)
    cpu="powerpc"
  ;;
  mips)
    cpu="mips"
  ;;
  *)
    cpu="unknown"
  ;;
esac
gprof="no"
v4l="yes"
audio_oss="yes"
audio_beos="no"
dv1394="yes"
network="yes"
zlib="yes"
mp3lame="no"
vorbis="no"
a52="yes"
a52bin="no"
win32="no"
mingw32="no"
cygwin="no"
os2="no"
lshared="no"
extralibs="-lm"
simpleidct="yes"
bigendian="no"
vhook="no"
dlfcn="no"
dlopen="no"
mpegaudio_hp="yes"
SHFLAGS=-shared
netserver="no"
need_inet_aton="no"
ffserver="yes"
LDFLAGS=-Wl,--warn-common
FFSLDFLAGS=-Wl,-E
LIBPREF="lib"
LIBSUF=".a"
SLIBPREF="lib"
SLIBSUF=".so"

# OS specific
targetos=`uname -s`
case $targetos in
BeOS)
prefix="/boot/home/config"
# helps building libavcodec
CFLAGS="-O3 -DPIC -fomit-frame-pointer"
# 3 gcc releases known for BeOS, each with ugly bugs
gcc_version="$($cc -v 2>&1 | grep version | cut -d ' ' -f3-)"
case "$gcc_version" in
2.9-beos-991026*|2.9-beos-000224*) echo "R5/GG gcc"
mmx="no"
;;
*20010315*) echo "BeBits gcc"
CFLAGS="$CFLAGS -fno-expensive-optimizations"
;;
esac
SHFLAGS=-nostart
# disable linux things
audio_oss="no"
v4l="no"
dv1394="no"
# enable beos things
audio_beos="yes"
# no need for libm, but the inet stuff
# Check for BONE
if (echo $BEINCLUDES|grep 'headers/be/bone' >/dev/null); then
extralibs="-lbind -lsocket"
else
netserver="yes"
need_inet_aton="yes"
extralibs="-lnet"
fi ;;
SunOS)
v4l="no"
audio_oss="no"
dv1394="no"
make="gmake"
LDFLAGS=""
FFSLDFLAGS=""
need_inet_aton="yes"
extralibs="$extralibs -lsocket -lnsl"
;;
FreeBSD)
v4l="no"
audio_oss="yes"
dv1394="no"
make="gmake"
LDFLAGS="$LDFLAGS -export-dynamic"
;;
BSD/OS)
v4l="no"
audio_oss="yes"
dv1394="no"
extralibs="-lpoll -lgnugetopt -lm"
make="gmake"
;;
Darwin)
cc="cc"
v4l="no"
audio_oss="no"
dv1394="no"
SHFLAGS="-dynamiclib"
extralibs=""
darwin="yes"
strip="strip -x"
LDFLAGS="-d"
FFSLDFLAGS=-Wl,-bind_at_load
gcc_version="$($cc -v 2>&1 | grep version | cut -d ' ' -f4-)"
case "$gcc_version" in
*2.95*) 
CFLAGS="-no-cpp-precomp -pipe -O3 -fomit-frame-pointer"
;;
*) 
CFLAGS="-no-cpp-precomp -pipe -O3 -fomit-frame-pointer -mdynamic-no-pic"
;;
esac
;;
MINGW32*)
v4l="no"
audio_oss="no"
dv1394="no"
ffserver="no"
network="no"
mingw32="yes"
;;
CYGWIN*)
v4l="no"
audio_oss="yes"
dv1394="no"
extralibs=""
cygwin="yes"
test -f /usr/include/inttypes.h || \
test -f /usr/local/include/inttypes.h || \
echo "Missing inttypes.h, please copy cygwin_inttypes.h to" \
     "/usr/include/inttypes.h !!!"
;;
Linux)
LDFLAGS="$LDFLAGS -rdynamic"
;;
OS/2)
TMPE=$TMPE".exe"
ar="emxomfar -p32"
strip="echo ignore strip"
CFLAGS="-Zomf"
LDFLAGS="-Zomf -Zstack 16384"
SHFLAGS=""
FFSLDFLAGS=""
LIBPREF=""
LIBSUF=".lib"
SLIBPREF=""
SLIBSUF=".dll"
extralibs=""
v4l="no"
audio_oss="no"
dv1394="no"
network="no"
ffserver="no"
os2="yes"
;;
*) ;;
esac

# find source path
# XXX: we assume an absolute path is given when launching configure, 
# except in './configure' case.
source_path=${0%configure}
source_path=${source_path%/}
source_path_used="yes"
if test -z "$source_path" -o "$source_path" = "." ; then
    source_path=`pwd`
    source_path_used="no"
fi

cat > $TMPC << EOF
#include <dlfcn.h>
int main( void ) { return (int) dlopen("foo", 0); }
EOF

ldl=-ldl

if $cc -o $TMPE $TMPC -ldl 2> /dev/null  ; then
vhook=yes
dlfcn=yes
dlopen=yes
fi

if $cc -o $TMPE $TMPC 2> /dev/null  ; then
vhook=yes
dlfcn=yes
dlopen=yes
ldl=""
fi

cat > $TMPC << EOF
int main( void ) { return (int) dlopen("foo", 0); }
EOF

if $cc -o $TMPE $TMPC -ldl 2> /dev/null  ; then
vhook=yes
dlopen=yes
fi

if $cc -o $TMPE $TMPC 2> /dev/null  ; then
vhook=yes
dlopen=yes
ldl=""
fi


cat > $TMPC << EOF
#include <X11/Xlib.h>
#include <Imlib2.h>
int main( void ) { return (int) imlib_load_font("foo"); }
EOF

imlib2=no
if $cc -o $TMPE $TMPC -lImlib2 2> /dev/null  ; then
imlib2=yes
fi

for opt do
  case "$opt" in
  --prefix=*) prefix=`echo $opt | cut -d '=' -f 2`
  ;;
  --source-path=*) source_path=`echo $opt | cut -d '=' -f 2`
  ;;
  --cross-prefix=*) cross_prefix=`echo $opt | cut -d '=' -f 2`
  ;;
  --cc=*) cc=`echo $opt | cut -d '=' -f 2`
  ;;
  --make=*) make=`echo $opt | cut -d '=' -f 2`
  ;;
  --extra-cflags=*) CFLAGS="${opt#--extra-cflags=}"
  ;;
  --extra-ldflags=*) LDFLAGS=${opt#--extra-ldflags=}
  ;;
  --extra-libs=*) extralibs=${opt#--extra-libs=}
  ;;
  --cpu=*) cpu=`echo $opt | cut -d '=' -f 2`
  ;;
  --disable-mmx) mmx="no"
  ;;
  --disable-altivec) altivec="no"
  ;;
  --enable-gprof) gprof="yes"
  ;;
  --disable-v4l) v4l="no"
  ;;
  --disable-audio-oss) audio_oss="no"
  ;;
  --disable-audio-beos) audio_beos="no"
  ;;
  --disable-dv1394) dv1394="no"
  ;;
  --disable-network) network="no"
  ;;
  --disable-zlib) zlib="no"
  ;;
  --disable-a52) a52="no"
  ;;
  --enable-a52bin) a52bin="yes" ; extralibs="$ldl $extralibs"
  ;;
  --enable-mp3lame) mp3lame="yes"
  ;;
  --enable-vorbis) vorbis="yes"
  ;;
  --disable-vhook) vhook="no"
  ;;
  --disable-simple_idct) simpleidct="no"
  ;;
  --enable-win32) win32="yes"
  ;;
  --enable-mingw32) mingw32="yes"
  ;;
  --enable-shared) lshared="yes"
  ;;
  --disable-mpegaudio-hp) mpegaudio_hp="no"
  ;;
  --disable-ffserver) ffserver="no"
  ;;
  esac
done

# compute mmx state
if test $mmx = "default"; then
    if test $cpu = "x86"; then
        mmx="yes"
    else
        mmx="no"
    fi
fi

# Can only do AltiVec on PowerPC
if test $altivec = "default"; then
    if test $cpu = "powerpc"; then
        altivec="yes"
    else
        altivec="no"
    fi
fi

# See does our compiler support Motorola AltiVec C API
if test $altivec = "yes"; then
cat > $TMPC << EOF
int main(void) {
    vector signed int v1, v2, v3;
    v1 = vec_add(v2,v3);
    return 0;
}
EOF
$cc -o $TMPE $TMPC -faltivec 2> /dev/null || altivec="no"
fi

# Can only do mmi on mips
if test $mmi = "default"; then
    if test $cpu = "mips"; then
        mmi="yes"
    else
        mmi="no"
    fi
fi

# See does our compiler support mmi
if test $mmi = "yes"; then
cat > $TMPC << EOF
int main(void) {
    __asm__ ("lq \$2, 0(\$2)");
    return 0;
}
EOF
$cc -o $TMPE $TMPC 2> /dev/null || mmi="no"
fi

# Checking for CFLAGS
if test -z "$CFLAGS"; then
    CFLAGS="-O3"
fi

if test "$win32" = "yes" ; then
    cross_prefix="i386-mingw32msvc-"
    v4l="no"
    audio_oss="no"
    dv1394="no"
    network="no"
fi

if test "$mingw32" = "yes" ; then
    cross_prefix=""
    v4l="no"
    audio_oss="no"
    dv1394="no"
    network="no"
fi

cc="${cross_prefix}${cc}"
ar="${cross_prefix}${ar}"
ranlib="${cross_prefix}${ranlib}"
strip="${cross_prefix}${strip}"

if test -z "$cross_prefix" ; then

# ---
# big/little endian test
cat > $TMPC << EOF
#include <inttypes.h>
int main(int argc, char ** argv){
	volatile uint32_t i=0x01234567;
	return (*((uint8_t*)(&i))) == 0x67;
}
EOF

if $cc -o $TMPE $TMPC 2>/dev/null ; then
$TMPE && bigendian="yes"
else
echo big/little test failed
fi

else

# if cross compiling, cannot launch a program, so make a static guess
if test "$cpu" = "powerpc" -o "$cpu" = "mips" ; then
    bigendian="yes"
fi

fi

# ---
# check availability of some header files

cat > $TMPC << EOF
#include <malloc.h>
int main( void ) { return 0; }
EOF

_memalign=no
_malloc_h=no
if $cc -o $TMPE $TMPC 2> /dev/null ; then
_malloc_h=yes
_memalign=yes
# check for memalign - atmos
cat > $TMPC << EOF
#include <malloc.h>
int main ( void ) {
char *string = NULL;
string = memalign(64, sizeof(char));
return 0;
}
EOF
$cc -o $TMPE $TMPC 2> /dev/null || _memalign=no
fi

cat > $TMPC << EOF
#define _GNU_SOURCE
#include <time.h>
int main( void ) { return *strptime("", "", 0); }
EOF

strptime=no
if $cc -o $TMPE $TMPC 2> /dev/null ; then
  strptime=yes
fi

if test "$zlib" = "yes"; then
# check for zlib - mmu_man
cat > $TMPC << EOF
#include <zlib.h>
int main ( void ) {
if (zlibVersion() != ZLIB_VERSION)
   puts("zlib version differs !!!");
   return 1;
return 0;
}
EOF
$cc -o $TMPE $TMPC -lz 2> /dev/null || zlib="no"
# $TMPE 2> /dev/null > /dev/null || zlib="no"
# XXX: more tests needed - runtime test
fi
if test "$zlib" = "yes"; then
extralibs="$extralibs -lz"
fi

# test for lrintf in math.h
cat > $TMPC << EOF
#define _ISOC9X_SOURCE  1
#include <math.h>
int main( void ) { return (lrintf(3.999f) > 0)?0:1; }
EOF

have_lrintf="no"
if $cc $extralibs -o $TMPE $TMPC 2> /dev/null ; then
  have_lrintf="yes"
  $TMPE 2> /dev/null > /dev/null || have_lrintf="no"
fi

_restrict=
for restrict_keyword in restrict __restrict__ __restrict; do
  echo "void foo(char * $restrict_keyword p);" > $TMPC
  if $cc -c -o $TMPO $TMPC 2> /dev/null; then
    _restrict=$restrict_keyword
    break;
  fi
done

# test gcc version to see if vector builtins can be used
# currently only used on i386 for MMX builtins
cat > $TMPC << EOF
int main(void) { 
#if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 2)
return 0;
#else
#error no vector builtins
#endif
}
EOF

builtin_vector=no
if $cc -o $TMPO $TMPC 2> /dev/null ; then
  builtin_vector=yes
fi

if test x"$1" = x"-h" -o x"$1" = x"--help" ; then
cat << EOF

Usage: configure [options]
Options: [defaults in brackets after descriptions]

EOF
echo "Standard options:"
echo "  --help                   print this message"
echo "  --prefix=PREFIX          install in PREFIX [$prefix]"
echo "  --enable-mp3lame         enable mp3 encoding via libmp3lame [default=no]"
echo "  --enable-vorbis          enable vorbis support via libvorbisenc [default=no]"
echo "  --enable-win32           enable win32 cross compile"
echo "  --enable-mingw32         enable mingw32 native windows compile"
echo "  --disable-a52            disable GPL'ed A52 support [default=no]"
echo "  --enable-a52bin          open liba52.so.0 at runtime [default=no]"
echo "  --enable-shared          build shared libraries [default=no]"
echo ""
echo "Advanced options (experts only):"
echo "  --source-path=PATH       path of source code [$source_path]"
echo "  --cross-prefix=PREFIX    use PREFIX for compile tools [$cross_prefix]"
echo "  --cc=CC                  use C compiler CC [$cc]"
echo "  --make=MAKE              use specified make [$make]"
echo "  --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]"
echo "  --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]"
echo "  --extra-libs=ELIBS       add ELIBS [$ELIBS]"
echo "  --cpu=CPU                force cpu to CPU  [$cpu]"
echo "  --disable-mmx            disable mmx usage"
echo "  --disable-altivec        disable AltiVec usage"
echo "  --disable-audio-oss      disable OSS audio support [default=no]"
echo "  --disable-audio-beos     disable BeOS audio support [default=no]"
echo "  --disable-v4l            disable video4linux grabbing [default=no]"
echo "  --disable-dv1394         disable DV1394 grabbing [default=no]"
echo "  --disable-network        disable network support [default=no]"
echo "  --disable-zlib           disable zlib [default=no]"
echo "  --disable-simple_idct    disable simple IDCT routines [default=no]"
echo "  --disable-vhook          disable video hooking support"
echo "  --enable-gprof           enable profiling with gprof [$gprof]"
echo "  --disable-mpegaudio-hp   faster (but less accurate)"
echo "                           mpegaudio decoding [default=no]"
echo "  --disable-ffserver       disable ffserver build"
echo ""
echo "NOTE: The object files are build at the place where configure is launched"
exit 1
fi

echo "Install prefix   $prefix"
echo "Source path      $source_path"
echo "C compiler       $cc"
echo "make             $make"
echo "CPU              $cpu"
echo "Big Endian       $bigendian"
if test $cpu = "x86"; then
echo "MMX enabled      $mmx"
echo "Vector Builtins  $builtin_vector"
fi
if test $cpu = "mips"; then
echo "MMI enabled      $mmi"
fi
if test $cpu = "powerpc"; then
echo "AltiVec enabled  $altivec"
fi
echo "gprof enabled    $gprof"
echo "zlib enabled     $zlib"
echo "mp3lame enabled  $mp3lame"
echo "vorbis enabled   $vorbis"
echo "a52 support      $a52"
echo "a52 dlopened     $a52bin"
echo "Video hooking    $vhook"

if test "$vhook" = "yes" ; then
echo "Imlib2 support   $imlib2"
fi

echo "Creating config.mak and config.h"

echo "# Automatically generated by configure - do not modify" > config.mak
echo "/* Automatically generated by configure - do not modify */" > $TMPH

echo "prefix=$prefix" >> config.mak
echo "MAKE=$make" >> config.mak
echo "CC=$cc" >> config.mak
echo "AR=$ar" >> config.mak
echo "RANLIB=$ranlib" >> config.mak
echo "STRIP=$strip" >> config.mak
echo "OPTFLAGS=$CFLAGS" >> config.mak
echo "LDFLAGS=$LDFLAGS" >> config.mak
echo "FFSLDFLAGS=$FFSLDFLAGS" >> config.mak
echo "SHFLAGS=$SHFLAGS" >> config.mak
echo "LIBPREF=$LIBPREF" >> config.mak
echo "LIBSUF=$LIBSUF" >> config.mak
echo "SLIBPREF=$SLIBPREF" >> config.mak
echo "SLIBSUF=$SLIBSUF" >> config.mak
if test "$cpu" = "x86" ; then
  echo "TARGET_ARCH_X86=yes" >> config.mak
  echo "#define ARCH_X86 1" >> $TMPH
elif test "$cpu" = "armv4l" ; then
  echo "TARGET_ARCH_ARMV4L=yes" >> config.mak
  echo "#define ARCH_ARMV4L 1" >> $TMPH
elif test "$cpu" = "alpha" ; then
  echo "TARGET_ARCH_ALPHA=yes" >> config.mak
  echo "#define ARCH_ALPHA 1" >> $TMPH
elif test "$cpu" = "sparc64" ; then
  echo "TARGET_ARCH_SPARC64=yes" >> config.mak
  echo "#define ARCH_SPARC64 1" >> $TMPH
elif test "$cpu" = "powerpc" ; then
  echo "TARGET_ARCH_POWERPC=yes" >> config.mak
  echo "#define ARCH_POWERPC 1" >> $TMPH
  echo "// Enable the next line to get PowerPC performance report" >> $TMPH
  echo "// #define POWERPC_TBL_PERFORMANCE_REPORT 1" >> $TMPH
  echo "// Enable the next line to use PMC registers instead of TBL" >> $TMPH
  echo "// #define POWERPC_PERF_USE_PMC 1" >> $TMPH
elif test "$cpu" = "mips" ; then
  echo "TARGET_ARCH_MIPS=yes" >> config.mak
  echo "#define ARCH_MIPS 1" >> $TMPH
fi
if test "$bigendian" = "yes" ; then
  echo "WORDS_BIGENDIAN=yes" >> config.mak
  echo "#define WORDS_BIGENDIAN 1" >> $TMPH
fi
if test "$mmx" = "yes" ; then
  echo "TARGET_MMX=yes" >> config.mak
  echo "#define HAVE_MMX 1" >> $TMPH
fi
if test "$builtin_vector" = "yes" ; then
  echo "TARGET_BUILTIN_VECTOR=yes" >> config.mak
  echo "#define HAVE_BUILTIN_VECTOR 1" >> $TMPH
fi
if test "$mmi" = "yes" ; then
  echo "TARGET_MMI=yes" >> config.mak
  echo "#define HAVE_MMI 1" >> $TMPH
fi
if test "$altivec" = "yes" ; then
  echo "TARGET_ALTIVEC=yes" >> config.mak
  echo "#define HAVE_ALTIVEC 1" >> $TMPH
  echo "// Enable the next line to use the reference C code instead of AltiVec" >> $TMPH
  echo "// #define ALTIVEC_USE_REFERENCE_C_CODE 1" >> $TMPH
fi
if test "$gprof" = "yes" ; then
  echo "TARGET_GPROF=yes" >> config.mak
  echo "#define HAVE_GPROF 1" >> $TMPH
fi
if test "$strptime" = "yes" ; then
  echo "#define HAVE_STRPTIME 1" >> $TMPH
else
  echo "BUILD_STRPTIME=yes" >> config.mak
fi
if test "$imlib2" = "yes" ; then
  echo "HAVE_IMLIB2=yes" >> config.mak
fi
if test "$have_lrintf" = "yes" ; then
  echo "#define HAVE_LRINTF 1" >> $TMPH
fi
if test "$vhook" = "yes" ; then
  echo "BUILD_VHOOK=yes" >> config.mak
  echo "#define HAVE_VHOOK 1" >> $TMPH
  extralibs="$extralibs $ldl"
fi
if test "$lshared" = "yes" ; then
  echo "BUILD_SHARED=yes" >> config.mak
  echo "PIC=-fPIC" >> config.mak
fi
echo "EXTRALIBS=$extralibs" >> config.mak
echo -n "VERSION=" >>config.mak
head $source_path/VERSION >>config.mak
echo "" >>config.mak
# if you do not want to use encoders, disable that.
echo "#define CONFIG_ENCODERS 1" >> $TMPH
echo "CONFIG_ENCODERS=yes" >> config.mak

# if you do not want to use decoders, disable that.
echo "#define CONFIG_DECODERS 1" >> $TMPH
echo "CONFIG_DECODERS=yes" >> config.mak

# AC3
if test "$a52" = "yes" ; then
  echo "#define CONFIG_AC3 1" >> $TMPH
  echo "CONFIG_AC3=yes" >> config.mak

  if test "$a52bin" = "yes" ; then
    echo "#define CONFIG_A52BIN 1" >> $TMPH
    echo "CONFIG_A52BIN=yes" >> config.mak
  fi
fi

# mpeg audio high precision mode
if test "$mpegaudio_hp" = "yes" ; then
  echo "#define CONFIG_MPEGAUDIO_HP 1" >> $TMPH
fi

if test "$v4l" = "yes" ; then
  echo "#define CONFIG_VIDEO4LINUX 1" >> $TMPH
  echo "CONFIG_VIDEO4LINUX=yes" >> config.mak
fi

if test "$dv1394" = "yes" ; then
  echo "#define CONFIG_DV1394 1" >> $TMPH
  echo "CONFIG_DV1394=yes" >> config.mak
fi

if test "$dlopen" = "yes" ; then
  echo "#define CONFIG_HAVE_DLOPEN 1" >> $TMPH
fi

if test "$dlfcn" = "yes" ; then
  echo "#define CONFIG_HAVE_DLFCN 1" >> $TMPH
fi

if test "$audio_oss" = "yes" ; then
  echo "#define CONFIG_AUDIO_OSS 1" >> $TMPH
  echo "CONFIG_AUDIO_OSS=yes" >> config.mak
fi

if test "$audio_beos" = "yes" ; then
  echo "#define CONFIG_AUDIO_BEOS 1" >> $TMPH
  echo "CONFIG_AUDIO_BEOS=yes" >> config.mak
fi

if test "$network" = "yes" ; then
  echo "#define CONFIG_NETWORK 1" >> $TMPH
  echo "CONFIG_NETWORK=yes" >> config.mak
fi

if test "$zlib" = "yes" ; then
  echo "#define CONFIG_ZLIB 1" >> $TMPH
  echo "CONFIG_ZLIB=yes" >> config.mak
fi

if test "$mp3lame" = "yes" ; then
  echo "#define CONFIG_MP3LAME 1" >> $TMPH
  echo "CONFIG_MP3LAME=yes" >> config.mak
fi

if test "$vorbis" = "yes" ; then
  echo "#define CONFIG_VORBIS 1" >> $TMPH
  echo "CONFIG_VORBIS=yes" >> config.mak
fi

if test "$win32" = "yes" ; then
  echo "#define CONFIG_WIN32 1" >> $TMPH
  echo "CONFIG_WIN32=yes" >> config.mak
fi

if test "$mingw32" = "yes" ; then
  echo "#define CONFIG_WIN32 1" >> $TMPH
  echo "CONFIG_WIN32=yes" >> config.mak
  echo "#define __MINGW32__ 1" >> $TMPH
  echo "__MINGW32__=1" >> config.mak
fi

if test "$cygwin" = "yes" ; then
  # setup correct exesuffix
  echo "CONFIG_WIN32=yes" >> config.mak
fi

if test "$os2" = "yes" ; then
  echo "#define CONFIG_OS2 1" >> $TMPH
  echo "CONFIG_OS2=yes" >> config.mak
fi

if test "$darwin" = "yes"; then
  echo "#define CONFIG_DARWIN 1"  >> $TMPH
  echo "CONFIG_DARWIN=yes" >> config.mak
fi

if test "$_malloc_h" = "yes" ; then
  echo "#define HAVE_MALLOC_H 1" >> $TMPH
else
  echo "#undef  HAVE_MALLOC_H" >> $TMPH
fi

if test "$_memalign" = "yes" ; then
  echo "#define HAVE_MEMALIGN 1" >> $TMPH
else
  echo "#undef  HAVE_MEMALIGN" >> $TMPH
fi

if test "$netserver" = "yes" ; then
  echo "#define CONFIG_BEOS_NETSERVER 1" >> $TMPH
  echo "CONFIG_BEOS_NETSERVER=yes" >> config.mak
fi

if test "$need_inet_aton" = "yes" ; then
  echo "NEED_INET_ATON=yes" >> config.mak
fi

if test "$simpleidct" = "yes" ; then
  echo "#define SIMPLE_IDCT 1" >> $TMPH
fi

if test "$ffserver" = "yes" ; then
  echo "#define CONFIG_FFSERVER 1" >> $TMPH
  echo "CONFIG_FFSERVER=yes" >> config.mak
fi

echo "#define restrict $_restrict" >> $TMPH

# build tree in object directory if source path is different from current one
if test "$source_path_used" = "yes" ; then
    DIRS="libavformat libavcodec libavcodec/alpha libavcodec/armv4l libavcodec/i386 \
          libavcodec/ppc libavcodec/liba52 libavcodec/mlib tests vhook"
    FILES="Makefile libavformat/Makefile libavcodec/Makefile tests/Makefile vhook/Makefile"
    for dir in $DIRS ; do
            mkdir -p $dir
    done
    for f in $FILES ; do
        ln -sf $source_path/$f $f
    done
fi
echo "SRC_PATH=$source_path" >> config.mak

diff $TMPH config.h >/dev/null 2>&1
if test $? -ne 0 ; then
	mv -f $TMPH config.h
else
	echo "config.h is unchanged"
fi

rm -f $TMPO $TMPC $TMPE $TMPS $TMPH