#!/bin/bash

##SlackBuild style build script

CWD=`pwd`
NAME=lapack
VERSION=3.1.1
ARCH=i586
BUILD=1vl58
VL_PACKAGER=easuter

if [ "$TMP" = "" ]; then
  TMP=/tmp
fi

if [ $UID != 0 ]; then
	echo "You need to be root to run this script."
	exit
fi

if [ ! -x /usr/bin/requiredbuilder ]; then
	echo "Requiredbuilder not installed, or not executable."
	exit
fi

if [ ! -d $TMP/finished-packages ]; then
	mkdir -p $TMP/finished-packages
fi

PKG=$TMP/package-$NAME
rm -rf $PKG
mkdir -p $PKG/usr
mkdir $PKG/install


if [ "$ARCH" = "i386" ]; then
  export CFLAGS="-O2 -march=i386 -mcpu=i686"
elif [ "$ARCH" = "i486" ]; then
  export CFLAGS="-O2 -march=i486 -mtune=i686"
elif [ "$ARCH" = "i586" ]; then
  export CFLAGS="-O2 -march=i586 -mtune=i686"
elif [ "$ARCH" = "s390" ]; then
  export CFLAGS="-O2"
elif [ "$ARCH" = "x86_64" ]; then
  export CFLAGS="-O2"
fi

CXXFLAGS="$CFLAGS"

cd $TMP
rm -rf $NAME-$VERSION
tar xvf $CWD/$NAME-$VERSION.tgz
cd $NAME-$VERSION/SRC
chown -R root:root .

cp $CWD/gcc-g77_Makefile-patch.diff .
patch -Np0 -i gcc-g77_Makefile-patch.diff

make shared

if ( ! make shared ); then
	echo "make failed"
	exit
fi

cd ..

cp $CWD/slack-desc .

cat >> slack-desc << EOF

#----------------------------------------

BUILDDATE: `date`
PACKAGER:  $VL_PACKAGER
HOST:      `uname -srm`
DISTRO:    `cat /etc/vector-version`
CFLAGS:    $CFLAGS
CONFIGURE: `awk "/\.\/configure\ /" config.log`

EOF


#manually install files
mkdir -p $PKG/usr/lib
mkdir -p $PKG/usr/man/man1
mkdir -p $PKG/usr/doc/$NAME-$VERSION/html
mv SRC/liblapack.so.3.1.1 $PKG/usr/lib
chmod 755 $PKG/usr/lib/liblapack.so.3.1.1
gzip -9  manpages/man/manl/*
mv manpages/man/manl/*.gz $PKG/usr/man/man1/
mv html/* $PKG/usr/doc/$NAME-$VERSION/html/

( cd $PKG/usr/lib

ln -sf liblapack.so.3.1.1 liblapack.so.3
ln -sf liblapack.so.3.1.1 liblapack.so

)

( 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
)

mkdir -p $PKG/usr/doc/$NAME-$VERSION
cp -a \
  AUTHORS COPYING ChangeLog NEWS README TODO \
  $PKG/usr/doc/$NAME-$VERSION
cp slack-desc $PKG/install

cd $PKG
requiredbuilder -v -y .

#prepend symlink info to a "custom" doinst.sh script
cp $CWD/doinst.sh install/
makepkg -p -l y -c n $NAME-$VERSION-$ARCH-$BUILD.tlz

cp $NAME-$VERSION-$ARCH-$BUILD.tlz $TMP/finished-packages
echo "$NAME-$VERSION package is in $TMP/finished-packages"

rm -rf $TMP/$NAME-$VERSION
rm -rf $PKG