#!/bin/sh

# Slackware build script for octave

# Copyright 2012 Kyle Guinn <elyk03@gmail.com>, 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=octave
VERSION=${VERSION:-3.6.3}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}

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}

DOCS="AUTHORS BUGS COPYING ChangeLog INSTALL* NEWS README"

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

# Default to use ImageMagick (shipped with Slackware) instead of
# GraphicsMagick so that octave will have at least some sort of image
# reading capabilities.  It's unclear if one is recommended over the other.
#
# ImageMagick uses 16 bits per pixel quantum (each of the red, green, blue,
# and alpha components) by default; GraphicsMagick uses 8 bits by default.
# If you require more, add '--with-quantum-depth=N' (where N is 8, 16, or 32)
# to the ./configure step of either Magick package when you build it.
# Larger values will make your Magick package slower and use more memory.
WITH_MAGICK=${WITH_MAGICK:-ImageMagick} # alternatively, "GraphicsMagick"

set -e

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-$VERSION
tar xvf $CWD/$PRGNAM-$VERSION.tar.bz2
cd $PRGNAM-$VERSION
chown -R root:root .
chmod -R u+w,go+r-w,a-st .

# Several configure checks look for headers in the 'amd' directory
# instead of 'cxsparse', 'camd', 'colamd', and 'ccolamd' directories
# as liboctave/oct-sparse.h expects.  Fix the typos and reconfigure.
# Note that camd.h doesn't appear to be included anywhere, but is used
# to determine if the CAMD library is present.
sed -i -e 's| amd/cs\.h| cxsparse/cs.h|' \
       -e 's| amd/camd\.h| camd/camd.h|' \
       -e 's| amd/colamd\.h| colamd/colamd.h|' \
       -e 's| amd/ccolamd\.h| ccolamd/ccolamd.h|' configure.ac
autoreconf -vif
# If you have amd.h in some non-default location (e.g. /usr/include/amd/amd.h)
# now the check for umfpack.h will fail because umfpack.h includes "amd.h"
# instead of "amd/amd.h".  The --with-amd-includedir option below fixes this.

CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \
FFLAGS="$SLKCFLAGS" \
./configure \
  --prefix=/usr \
  --libdir=/usr/lib${LIBDIRSUFFIX} \
  --sysconfdir=/etc \
  --localstatedir=/var \
  --mandir=/usr/man \
  --infodir=/usr/info \
  --docdir=/usr/doc/$PRGNAM-$VERSION \
  --enable-shared \
  --disable-static \
  --enable-strict-warning-flags \
  --with-magick=$WITH_MAGICK \
  --with-amd-includedir=/usr/include/amd \
  --build=$ARCH-slackware-linux

make
make install-strip DESTDIR=$PKG

find $PKG/usr/man -type f -exec gzip -9 {} \;

rm -f $PKG/usr/info/dir
gzip -9 $PKG/usr/info/*.info*

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

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

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