#!/bin/bash

# variables
CWD=$(pwd)

PRGNAM=$(basename $CWD)
VERSION=${VERSION:-"trunk"} # or VERSION=trunk
ARCH=${ARCH:-$(uname -m)}
BUILD=1

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

REPOSITORY=/home/installs/SlackBuilds/repositories/$PRGNAM

PREFIX=/usr

SLCKFLAGS=" -O "

# nettoyage préalable
rm -fr $PKG $TMP/$PRGNAM-*

mkdir -p $PKG

# mise en place
cd $TMP
[ ! -e $REPOSITORY ] && git clone https://git.savannah.gnu.org/git/gforth.git $REPOSITORY

cp -R $REPOSITORY $TMP/$PRGNAM-$VERSION
cd $TMP/$PRGNAM-$VERSION
[ "x$VERSION" == "xlatest" ] && VERSION=$(git for-each-ref --sort=taggerdate --format '%(tag)' | tail -n1)
[ "x$VERSION" == "x" ] && VERSION=trunk
[ "x$VERSION" == "xtrunk" ] && VERSION="git_$(git log -1 --format=%h_%ad --date=format:%Y.%m.%d)" || git checkout $VERSION

# configuration
./BUILD-FROM-SCRATCH --prefix=${PREFIX} \
                     --mandir=${PREFIX}/man \
                     --infodir=${PREFIX}/info \
                     --libdir=${PREFIX}/lib$(uname -m | grep -o 64)

# compilation
make -j3

# installation
make install DESTDIR=$PKG

rm $PKG$PREFIX/info/dir

mkdir -p $PKG$PREFIX/doc/$PRGNAM
cp -R test/ doc/ *.md LICENSE $PKG$PREFIX/doc/$PRGNAM

# 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 (implementation of the Forth 2012 language.)
$PRGNAM:
$PRGNAM: A free, fast, featureful and portable implementation of the Forth 2012
$PRGNAM: language.
$PRGNAM:
$PRGNAM:
$PRGNAM:
$PRGNAM:
$PRGNAM: https://gforth.org
$PRGNAM:
EOF

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