#!/bin/bash

# Slackware build script for parmetis

# Copyright 2015 William PC (Slack-it)- Seattle, USA
# All rights reserved.
#
# 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.

PRGNAM=parmetis
VERSION=${VERSION:-4.0.3}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}

SRCNAM="$(printf $PRGNAM | cut -d- -f2-)"

if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) ARCH=i486 ;;
    arm*) ARCH=arm ;;
       *) ARCH=$( uname -m ) ;;
  esac
fi

CWD=$(pwd)
TMP=${TMP:-/tmp/SBo}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

if [ "$ARCH" = "i486" ]; then
  SLKCFLAGS="-O2 -march=i486 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
fi

set -e

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf parmetis-$VERSION
tar xvf $CWD/parmetis-$VERSION.tar.gz
cd parmetis-$VERSION

chown -R root:root .
find -L . \
 \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 \
  -o -perm 511 \) -exec chmod 755 {} \; -o \
 \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
  -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;

# Use double-precision floating-point format
if [ "${DP:-no}" == "yes" ]; then
  sed -i 's/#define IDXTYPEWIDTH 32/\#define IDXTYPEWIDTH 64/' metis/include/metis.h
fi

### Build without MPI doesn't make sense. METIS can also be build
### from suitesparce slackbuilds.
# Manual set for MPI implementation goes here
# defaults is the MPI wrapper
if [ "${MPI:-yes}" == "no" ]; then
  OPT_BUILD="cc=mpicc cxx=mpicxx f77=mpif77"
fi

CFLAGS="$SLKCFLAGS" \
make config prefix="/usr" shared=1 $OPT_BUILD
make
make install DESTDIR=$PKG

cd metis
CFLAGS="$SLKCFLAGS" \
make config prefix="/usr" shared=1 $OPT_BUILD
make
make install DESTDIR=$PKG
cd -

# Installing library and include files for version > 4.0, don't
# have rule to set install location.
if [ "$ARCH" = "x86_64" ]; then
  mv $PKG/usr/lib $PKG/usr/lib${LIBDIRSUFFIX}
fi

mkdir -p $PKG/usr/include/parmetis
mv $PKG/usr/include/{parmetis,metis}.h $PKG/usr/include/parmetis/

find $PKG -print0 | xargs -0 file | grep -e "executable" -e "shared object" | grep ELF \
  | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true

find $PKG -depth -type d -empty -delete || true

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a LICENSE.txt $PKG/usr/doc/$PRGNAM-$VERSION
cat $CWD/parmetis.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc

cd $PKG
/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.${PKGTYPE:-tgz}