#!/bin/bash

##SlackBuild style build script

CWD=`pwd`
NAME=lua
VERSION=5.1.2
ARCH=i586
BUILD=1vl59
VL_PACKAGER=kidd

if [ "$TMP" = "" ]; then
  TMP=/tmp
fi

if [ $UID != 0 ]; then
	echo "You need to be root to run this script."
	exit
fi

if [ ! -x /usr/bin/requiredbuilder ]; then
	echo "Requiredbuilder not installed, or not executable."
	exit
fi

if [ ! -d $TMP/finished-packages ]; then
	mkdir -p $TMP/finished-packages
fi

PKG=$TMP/package-$NAME
rm -rf $PKG
mkdir -p $PKG/usr
mkdir $PKG/install


if [ "$ARCH" = "i386" ]; then
  export CFLAGS="-O2 -march=i386 -mcpu=i686"
elif [ "$ARCH" = "i486" ]; then
  export CFLAGS="-O2 -march=i486 -mtune=i686"
elif [ "$ARCH" = "i586" ]; then
  export CFLAGS="-O2 -march=i586 -mtune=i686"
elif [ "$ARCH" = "s390" ]; then
  export CFLAGS="-O2"
elif [ "$ARCH" = "x86_64" ]; then
  export CFLAGS="-O2"
fi

CXXFLAGS="$CFLAGS"

cd $TMP
rm -rf $NAME-$VERSION
tar zxvf $CWD/$NAME-$VERSION.tar.gz || exit 1
cd $NAME-$VERSION
chown -R root:root .

chmod -R a-s,u+rw,go-w+r .

# Apply patch to make it compile the lib into a shared object
cat $CWD/$NAME-$VERSION-shared.diff | patch -p1 || exit 1

# Let's use our custom CFLAGS from above
sed -i "s/INSTALL_TOP= \/usr\/local/INSTALL_TOP= \/usr/" Makefile || exit 1

make linux

cp $CWD/slack-desc .

cat >> slack-desc << EOF

#----------------------------------------

BUILDDATE: `date`
PACKAGER:  $VL_PACKAGER
HOST:      `uname -srm`
DISTRO:    `cat /etc/vector-version`
CFLAGS:    $CFLAGS
CONFIGURE: `awk "/\.\/configure\ /" config.log`

EOF

make install DESTDIR=$PKG

# Let's make sure all of the library symlinks correctly exist
( cd $PKG/usr/lib
  ln -sf liblua.so.5.1.2 liblua.so
  ln -sf liblua.so.5.1.2 liblua.so.5
)


( cd $PKG
  find . | xargs file | grep "executable" | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null
  find . | xargs file | grep "shared object" | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null
)

# Remove some empty directories, I can't imagine why these are here.
rm -rf $PKG/usr/share $PKG/usr/lib/lua

mkdir -p $PKG/usr/doc/$NAME-$VERSION

cp -a \
  AUTHORS COPYING ChangeLog NEWS README TODO \
  $PKG/usr/doc/$NAME-$VERSION

cp -a doc/*.html doc/logo.gif doc/lua.css $PKG/usr/doc/$NAME-$VERSION/html
cp -a etc test $PKG/usr/doc/$NAME-$VERSION/extras

cp slack-desc $PKG/install

cd $PKG
requiredbuilder -v -y .
makepkg -p -l y -c n $NAME-$VERSION-$ARCH-$BUILD.tlz

cp $NAME-$VERSION-$ARCH-$BUILD.tlz $TMP/finished-packages
echo "$NAME-$VERSION package is in $TMP/finished-packages"

rm -rf $TMP/$NAME-$VERSION
rm -rf $PKG