#!/bin/bash

# variables
CWD=$(pwd)

PRGNAM=$(basename $CWD)
VERSION=${VERSION:-4.1.34}
ARCH=${ARCH:-$(uname -m)}
BUILD=1

TAG=gwh
TMP=/tmp/$TAG
PKG=$TMP/pkg-$PRGNAM
OUTPUT=/tmp

REPOSITORY=/var/cache/SlackBuilds.gwh/$PRGNAM

PREFIX=/usr

SLCKFLAGS=" -O "

# nettoyage préalable
rm -fr $PKG $TMP/rpl-$VERSION

mkdir -p $PKG

# mise en place
cd $TMP
mkdir -p $REPOSITORY
[ ! -e $REPOSITORY/$PRGNAM-$VERSION.tar.bz2 ] && wget -c -O $REPOSITORY/$PRGNAM-$VERSION.tar.bz2 http://www.rpl2.fr/download/rpl-${VERSION}.tar.bz2

[ ! -e $REPOSITORY/reference_rpl_french.ps.bz2 ] && wget -c -O $REPOSITORY/reference_rpl_french.ps.bz2 http://www.rpl2.fr/download/reference_rpl_french.ps.bz2

cd $TMP/
tar xvf $REPOSITORY/$PRGNAM-$VERSION.tar.bz2
cd rpl-$VERSION

# configuration
./autogen.sh

./configure \
    --prefix=$PREFIX \
    --mandir=$PREFIX/man \
    --libdir=$PREFIX/lib$(uname -m | grep -o 64) \
    --disable-embedded-gnuplot \
    --disable-dependency-tracking
    # --enable-rplcas \
    # --enable-native \
    # --enable-experimental \
    # --with-x \

# compilation
make -j$(nproc)

# installation
make install DESTDIR=$PKG

mkdir -p $PKG$PREFIX/doc/$PRGNAM
cp -R AUTHORS COPYING ChangeLog HEADER INSTALL LIMITATIONS Licence_CeCILL_V2-en.txt Licence_CeCILL_V2-fr.txt NEWS README doc/ examples/ $PKG$PREFIX/doc/$PRGNAM

bzcat $REPOSITORY/reference_rpl_french.ps.bz2 > $PKG$PREFIX/doc/$PRGNAM/reference_rpl_french.ps

# correction
cd $PKG
chown -R root:root *

find $PKG -name \.git\* -exec rm -fr {} \;

[ -d $PKG/usr/man ] && find $PKG/usr/man -type f -name "*.?" -exec gzip -9f {} \;

# Strip binaries
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

# embaumement
mkdir -p $PKG/install
cat <<EOF > $PKG/install/slack-desc
$PRGNAM: $PRGNAM (a programming language designed for scientific computations)
$PRGNAM:
$PRGNAM: Your goal: improve the portability and facilitate the writing of your numerical
$PRGNAM: algorithms or symbolic computations on parallel calulators.
$PRGNAM: A simple solution: use RPL/2 language and extensions
$PRGNAM:    An functional Turing-equivalent language
$PRGNAM:    A compiled language
$PRGNAM:    A type-inference language
$PRGNAM:    An extensible language
$PRGNAM:
$PRGNAM: http://www.rpl2.fr
EOF

# empaquetage
rm -f $PKG/{,usr/}lib$(uname -m | grep -o 64)/*.la
/sbin/makepkg --linkadd y --chown n --prepend $OUTPUT/$PRGNAM-$(echo $VERSION | sed 's/-//g')-$ARCH-$BUILD$TAG.txz