CWD=`pwd`
cd /tmp
tar xzvf $CWD/libpng-1.0.11.tar.gz
cd libpng-1.0.11
zcat $CWD/libpng-1.0.11.diff.gz | patch -p1 --verbose --backup --suffix=.orig -E
ln -s scripts/makefile.linux ./Makefile
make
rm -rf /tmp/package-libpng
mkdir /tmp/package-libpng
make install prefix=/tmp/package-libpng/usr
mkdir -p /tmp/package-libpng/usr/man/man{3,5}
install -m 644 libpng.3 /tmp/package-libpng/usr/man/man3
install -m 644 libpngpf.3 /tmp/package-libpng/usr/man/man3
install -m 644 png.5 /tmp/package-libpng/usr/man/man5
gzip -9 /tmp/package-libpng/usr/man/man3/* /tmp/package-libpng/usr/man/man5/*
mkdir -p /tmp/package-libpng/usr/doc/libpng-1.0.11
cp -a ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO libpng.txt \
  example.c /tmp/package-libpng/usr/doc/libpng-1.0.11
chmod 644 /tmp/package-libpng/usr/doc/libpng-1.0.11/*
chown root.root /tmp/package-libpng/usr/doc/libpng-1.0.11/*
cd /tmp/package-libpng
echo "y
n" | makepkg ../libpng.tgz