#!/bin/sh

# Slackware build script for Lua

# Written by Menno Duursma
# Modified by the SlackBuilds.org project

PRGNAM=lua
VERSION=5.1.4
ARCH=${ARCH:-i486}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}

CWD=$(pwd)
TMP=${TMP:-/tmp/SBo}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

if [ "$ARCH" = "i486" ]; then
  SLKCFLAGS="-O2 -march=i486 -mtune=i686"
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
fi

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP || exit 1
rm -rf $PRGNAM-$VERSION
tar xvf $CWD/$PRGNAM-$VERSION.tar.gz || exit 1
cd $PRGNAM-$VERSION || exit 1
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 $CWD/$PRGNAM-$VERSION-shared.diff | patch -p1 || exit 1

# Let's use our custom CFLAGS from above
sed -i "s/-DLUA_USE_LINUX/\"-DLUA_USE_LINUX $SLKCFLAGS\"/g" src/Makefile || exit 1

make linux
make install INSTALL_TOP=$PKG/usr || exit 1

# Install the pkg-config file so other apps can find LUA
# Also, fix the prefix path in lua.pc
mkdir -p $PKG/usr/lib/pkgconfig
sed 's|prefix= /usr/local|prefix= /usr|' etc/lua.pc > \
  $PKG/usr/lib/pkgconfig/lua.pc

# Let's make sure all of the library symlinks correctly exist
( cd $PKG/usr/lib
  ln -sf liblua.so.${VERSION} liblua.so.5
  ln -sf liblua.so.${VERSION} liblua.so
  chmod 0755 liblua.so.${VERSION}
)

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

( cd $PKG/usr/man
  find . -type f -exec gzip -9 {} \;
  for i in $(find . -type l) ; do ln -s $(readlink $i).gz $i.gz ; rm $i ; done
)

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

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION/{extras,html}
cp -a COPYRIGHT HISTORY INSTALL README $PKG/usr/doc/$PRGNAM-$VERSION
cp -a doc/*.html doc/logo.gif doc/lua.css $PKG/usr/doc/$PRGNAM-$VERSION/html
cp -a etc test $PKG/usr/doc/$PRGNAM-$VERSION/extras
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc

cd $PKG
/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.tgz