#!/bin/sh
# Copyright Loris Vincenzi (http://www.slacky.eu)
# All rights reserved.
#
# Heavily based on the Slackware 12.2 SlackBuild
# http://www.netlib.org/lapack/
#
# 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.

CWD=`pwd`
TMP=${TMP:-/tmp/tgz}
PKG=$TMP/package-lapack
NAME=lapack
VERSION=3.2.1
ARCH=${ARCH:-i686}
BUILD=1sl

rm -rf $PKG
mkdir -p $PKG

cd $TMP/
tar xzvf $CWD/$NAME.tgz
cd $TMP/$NAME-$VERSION
chmod -R u+w,go+r-w,a-s .
zcat $CWD/lapack.diff.gz | patch -p1 -E --backup --verbose
chown -R root:root .
mv make.inc.example make.inc
make cleanlib
make blaslib PICOPTS=-fPIC
mv blas_LINUX.a libblas_pic.a
mkdir comp
( cd comp; ar x ../libblas_pic.a )
gfortran -shared -Wl,-soname=libblas.so.3 -o libblas.so.$VERSION comp/*.o
ln -s libblas.so.$VERSION libblas.so
rm -rf comp
make cleanlib
make blaslib
mv blas_LINUX.a libblas.a
make cleanlib
make lapacklib PICOPTS=-fPIC
mv lapack_LINUX.a liblapack_pic.a
mkdir comp
( cd comp; ar x ../liblapack_pic.a )
gfortran -shared -Wl,-soname=liblapack.so.3 -o liblapack.so.$VERSION comp/*.o -L. -lblas
ln -s liblapack.so.$VERSION liblapack.so
rm -rf comp
make cleanlib
make lapacklib
mv lapack_LINUX.a liblapack.a
mkdir -p $PKG/usr/lib
cp liblapack.a $PKG/usr/lib/liblapack.a
cp libblas.a $PKG/usr/lib/libblas.a
cp liblapack.so.$VERSION $PKG/usr/lib/liblapack.so.$VERSION
( cd $PKG/usr/lib; ln -s liblapack.so.$VERSION liblapack.so )
cp libblas.so.$VERSION $PKG/usr/lib/libblas.so.$VERSION
( cd $PKG/usr/lib; ln -s libblas.so.$VERSION libblas.so )
mkdir -p $PKG/usr/doc/$NAME-$VERSION
cp -a README INSTALL/lawn81.pdf $PKG/usr/doc/$NAME-$VERSION
cd $PKG
find . | xargs file | grep "shared object" | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null
find . | xargs file | grep "current ar archive" | cut -f 1 -d : | xargs strip -g 2> /dev/null
mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc
cat $CWD/slack-desc > $PKG/usr/doc/$NAME-$VERSION/slack-desc
cat $CWD/$NAME.SlackBuild > $PKG/usr/doc/$NAME-$VERSION/$NAME.SlackBuild
requiredbuilder -v -y -s $CWD $PKG
makepkg -l y -c n $CWD/$NAME-$VERSION-$ARCH-$BUILD.tgz

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