#!/bin/bash

# variables
CWD=$(pwd)

PRGNAM=$(basename $CWD)

VERSION=${VERSION:-latest}
ARCH=${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 git://c9x.me/qbe.git $REPOSITORY
cd $REPOSITORY
git pull --all

cp -R $REPOSITORY $TMP/$PRGNAM
cd $TMP/$PRGNAM
[ "x$VERSION" == "xlatest" ] && VERSION=$(git describe --tags --abbrev=0)
[ "x$VERSION" == "x" ] && VERSION=trunk
[ "x$VERSION" == "xdevelop" ] && git checkout develop && VERSION=trunk
[ "x$VERSION" == "xtrunk" ] && VERSION="git_r$(git rev-list --count HEAD)_$(git log -1 --format=%h)" || git checkout $VERSION

# compilation
make -j3

# installation
make install DESTDIR=$PKG PREFIX=$PREFIX

mkdir -p $PKG$PREFIX/doc/$PRGNAM
cp -R doc/ LICENSE README $PKG$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 (Compiler Backend)
$PRGNAM:
$PRGNAM: QBE aims to be a pure C embeddable backend that provides 70% of the performance
$PRGNAM: of advanced compilers in 10% of the code. Its small size serves both its
$PRGNAM: aspirations of correctness and our ability to understand, fix, and improve it.
$PRGNAM: It also serves its users by providing trivial integration and great flexibility.
$PRGNAM:
$PRGNAM:
$PRGNAM: https://c9x.me/compile/
$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