#!/bin/sh
# Heavily based on the Slackware 13.1 SlackBuild
# http://www.mono-project.com
# Packager Andrea Sciucca ( gohanz at infinito.it)
# Thanks to  Menno Duursma SlackBuilds.org project
# Modified by Aaron W. Hsu
# Thanks to gustavo.zuliani at iet.unipi.it
# http://www.slacky.eu
#
# Redistribution and use of this script, with or without modification, is
# permitted provided that the following conditions are met:
#
# 1. Redistributions of this script must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ''AS IS'' AND ANY EXPRESS OR IMPLIED
# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
# EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
#
#
# Exit on most errors
set -e 


# Set variables:
CWD=`pwd`
OUTPUT=${OUTPUT:-$CWD}
PKGNAME=lua
TMP=${TMP:-/tmp/txz/$PKGNAME}
PKG=$TMP/package
VERSION=${VERSION:-5.1.4}
PATCH=${PATCH:-2}
ARCH=${ARCH:-i486}
JOBS=${JOBS:--j2}
BUILD=${BUILD:-1}
TAG=${TAG:-sl}

SOURCE="http://www.lua.org/ftp/$PKGNAME-$VERSION.tar.gz"

# Download sorce tarball if still not present
if [ ! -e $PKGNAME-$VERSION.tar.gz ]; then
wget -c $SOURCE
fi

SOURCE="http://www.lua.org/ftp/patch-$PKGNAME-$VERSION-2"

# Download Patch if still not present
if [ ! -e patch-$PKGNAME-$VERSION-2 ]; then
wget -c $SOURCE
fi


# Set compiling FLAGS
if [ "$ARCH" = "i486" ]; then
  SLKCFLAGS="-O2 -march=i486 -mtune=i686"; SLKLDFLAGS=""; LIBDIRSUFFIX=""; CHOST="i486"
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"; SLKLDFLAGS=""; LIBDIRSUFFIX=""; CHOST="i686"
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"; SLKLDFLAGS="-L/usr/lib64"; LIBDIRSUFFIX="64"; CHOST="x86_64"
fi

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT

# Decompress the source tarball
cd $TMP
tar xvzf $CWD/$PKGNAME-$VERSION.tar.gz

echo -e "\E[0;32m+----------------------+\E[0;0m"
echo -e "\E[0;32m| Start SlackBuild Lua |\E[0;0m"
echo -e "\E[0;32m+----------------------+\E[0;0m"

# Patch the source -A bug-fix-
cd $PKGNAME-$VERSION/src
patch  < $CWD/patch-$PKGNAME-$VERSION-2

# Adjust permissions and ownerships
cd ..
chmod -R u+w,go+r-w,a-s .
chown -R root:root .


# Fix up a to-be-installed header and the pkgconfig file
sed -i "s|/usr/local|/usr|" src/luaconf.h
sed -i "s|lib/lua|lib$LIBDIRSUFFIX/lua|" src/luaconf.h
sed -i "s|/usr/local|/usr|" etc/lua.pc
sed -i "s|prefix}/lib|prefix}/lib${LIBDIRSUFFIX}|g" etc/lua.pc


# Building Lua  package
make linux \
  CFLAGS="$SLKCFLAGS \$(MYCFLAGS)" \
  INSTALL_TOP=/usr \
  INSTALL_LIB=/usr/lib${LIBDIRSUFFIX} \
  INSTALL_LMOD=/usr/share/lua/5.1 \
  INSTALL_CMOD=/usr/lib${LIBDIRSUFFIX}/lua/5.1

make linux install \
  CFLAGS="$SLKCFLAGS \$(MYCFLAGS)" \
  INSTALL_TOP=$PKG/usr \
  INSTALL_LIB=$PKG/usr/lib${LIBDIRSUFFIX} \
  INSTALL_LMOD=$PKG/usr/share/lua/5.1 \
  INSTALL_CMOD=$PKG/usr/lib${LIBDIRSUFFIX}/lua/5.1

# Now let's build the shared library
mkdir -p shared
cd shared
  ar -x $PKG/usr/lib${LIBDIRSUFFIX}/liblua.a
  gcc -ldl -lreadline -lhistory -lncurses -lm -shared *.o -o liblua.so.5.1.4
  cp -a liblua.so.5.1.4 $PKG/usr/lib${LIBDIRSUFFIX}
  ( cd $PKG/usr/lib${LIBDIRSUFFIX}
    ln -s liblua.so.5.1.4 liblua.so.5.1
    ln -s liblua.so.5.1.4 liblua.so.5
    ln -s liblua.so.5.1.4 liblua.so
  )
cd -

# Installing  the pkgconfig file
mkdir -p $PKG/usr/lib${LIBDIRSUFFIX}/pkgconfig
cat etc/lua.pc > $PKG/usr/lib${LIBDIRSUFFIX}/pkgconfig/lua.pc



# Strip binaries and shared objects, if present
( cd $PKG
  find . | xargs file | grep "executable" | grep ELF | cut -f 1 -d : | xargs -r strip --strip-unneeded 2> /dev/null || true
  find . | xargs file | grep "shared object" | grep ELF | cut -f 1 -d : | xargs -r strip --strip-unneeded 2> /dev/null || true
  find . | xargs file | grep "current ar archive" | cut -f 1 -d : | xargs -r strip --strip-unneeded 2> /dev/null || true
)



# Compress the man pages if present
if [ -d $PKG/usr/man ]; then
    ( 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
    )
fi


#Add documentation files: readme, changelog and so on
mkdir -p $PKG/usr/doc/$PKGNAME-$VERSION/{SlackBuild,extras,html}
cp -a COPYRIGHT HISTORY INSTALL README $PKG/usr/doc/$PKGNAME-$VERSION
cp -a doc/*.html doc/logo.gif doc/lua.css $PKG/usr/doc/$PKGNAME-$VERSION/html
cp -a etc test $PKG/usr/doc/$PKGNAME-$VERSION/extras
chmod -R 644 $PKG/usr/doc/$PKGNAME-$VERSION/*



# Also add the slack-desk file and this slackbuild to the package
mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc
cat $CWD/slack-desc > $PKG/usr/doc/$PKGNAME-$VERSION/SlackBuild/slack-desc
cat $CWD/$PKGNAME.SlackBuild > $PKG/usr/doc/$PKGNAME-$VERSION/SlackBuild/$PKGNAME.SlackBuild



# Find and print dependencies into slack-required file
cd $PKG
chown -R root:root $PKG
if [ -x /usr/bin/requiredbuilder ];then
requiredbuilder -y -v -s  $CWD $PKG
fi
# Create txz package
/sbin/makepkg -l y -c n $OUTPUT/$PKGNAME-$VERSION.$PATCH-$ARCH-$BUILD$TAG.${PKGTYPE:-txz}


# Cleanup if enabled
if [ "$1" = "--cleanup" ]; then
 rm -rf $TMP
fi