build_ffmpeg_osx.sh

symbian下ffmpeg编程。。废了好大劲下下来的！。

#!/bin/sh

cd ..
if [ ! -d ffmpeg ]; then
	svn co -r7430 svn://svn.mplayerhq.hu/ffmpeg/trunk ffmpeg || exit 1
fi

cd ffmpeg

# the snow encoder is added since the i386 version can't be compiled without it, in r7430
FLAGS="--disable-encoders --disable-decoders --disable-protocols --disable-muxers --disable-demuxers --disable-parsers --enable-decoder=mpeg1video --enable-encoder=mpeg1video --enable-encoder=mp2 --enable-muxer=mpeg1system --enable-encoder=snow"


FLAGS="--enable-shared $FLAGS"

./configure \
	--arch=powerpc --cross-compile \
	--extra-cflags="-isysroot /Developer/SDKs/MacOSX10.4u.sdk -arch ppc $EXTRA_CFLAGS" \
	--extra-ldflags="-Wl,-syslibroot,/Developer/SDKs/MacOSX10.4u.sdk -arch ppc $EXTRA_LDFLAGS" \
	$FLAGS || exit 1
[ -f .depend ] || make depend
make clean lib || exit 1
cp libavcodec/libavcodec.a libavcodec/libavcodec.a.ppc
cp libavformat/libavformat.a libavformat/libavformat.a.ppc
cp libavutil/libavutil.a libavutil/libavutil.a.ppc
[ -f libswscale/libswscale.a ] && cp libswscale/libswscale.a libswscale/libswscale.a.ppc
cp libavcodec/libavcodec.dylib libavcodec/libavcodec.dylib.ppc
cp libavformat/libavformat.dylib libavformat/libavformat.dylib.ppc
cp libavutil/libavutil.dylib libavutil/libavutil.dylib.ppc
[ -f libswscale/libswscale.dylib ] && cp libswscale/libswscale.dylib libswscale/libswscale.dylib.ppc

./configure \
	--arch=x86_32 --cross-compile \
	--extra-cflags="-isysroot /Developer/SDKs/MacOSX10.4u.sdk -arch i386 $EXTRA_CFLAGS" \
	--extra-ldflags="-Wl,-syslibroot,/Developer/SDKs/MacOSX10.4u.sdk -arch i386 $EXTRA_LDFLAGS" \
	$FLAGS || exit 1
make clean lib || exit 1
cp libavcodec/libavcodec.a libavcodec/libavcodec.a.i386
cp libavformat/libavformat.a libavformat/libavformat.a.i386
cp libavutil/libavutil.a libavutil/libavutil.a.i386
[ -f libswscale/libswscale.a ] && cp libswscale/libswscale.a libswscale/libswscale.a.i386
cp libavcodec/libavcodec.dylib libavcodec/libavcodec.dylib.i386
cp libavformat/libavformat.dylib libavformat/libavformat.dylib.i386
cp libavutil/libavutil.dylib libavutil/libavutil.dylib.i386
[ -f libswscale/libswscale.dylib ] && cp libswscale/libswscale.dylib libswscale/libswscale.dylib.i386

make clean

(cd libavcodec && lipo -create -output libavcodec.a libavcodec.a.ppc libavcodec.a.i386 && ranlib libavcodec.a)
(cd libavformat && lipo -create -output libavformat.a libavformat.a.ppc libavformat.a.i386 && ranlib libavformat.a)
(cd libavutil && lipo -create -output libavutil.a libavutil.a.ppc libavutil.a.i386 && ranlib libavutil.a)
[ -f libswscale/libswscale.a.ppc ] && (cd libswscale && lipo -create -output libswscale.a libswscale.a.ppc libswscale.a.i386 && ranlib libswscale.a)

function fix_dylib {
	name=$1
	if [ ! -f $name/$name.dylib.ppc ] ; then
		return
	fi
	lipo -create -output $name/$name.dylib $name/$name.dylib.ppc $name/$name.dylib.i386
	PREFIX=@loader_path/../Frameworks
	install_name_tool -id $PREFIX/$name.dylib $name/$name.dylib
	install_name_tool -change /usr/local/lib/libavutil.dylib $PREFIX/libavutil.dylib $name/$name.dylib
	install_name_tool -change /usr/local/lib/libavcodec.dylib $PREFIX/libavcodec.dylib $name/$name.dylib
	install_name_tool -change /usr/local/lib/libavformat.dylib $PREFIX/libavformat.dylib $name/$name.dylib
}

fix_dylib libavutil
fix_dylib libavcodec
fix_dylib libavformat
fix_dylib libswscale