#!/bin/sh

# Slackware build script for OpenCASCADE
# With some inspiration from the Arch PKGBUILD script
# revision date: 2010/04/26

PRGNAM=OpenCASCADE
VERSION=6.3.0
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}

SRCVERSION=_src

# Automatically determine the architecture we're building on:
if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) ARCH=i486 ;;
    arm*) ARCH=arm ;;
    # Unless $ARCH is already set, use uname -m for all other archs:
       *) ARCH=$( 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	 # Exit on most errors

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

# Apply Service Pack 6 from http://www.salome-platform.org/
patch -p1 < $CWD/opencascade-6.3.0sp6.diff

# Apply patch from debian to correct the release number of the libraries
patch -p1 < $CWD/lib-release.patch

# Change to the directory where we'll build from
cd ros

# Set correct location for libraries
sed \
  -e "s|/lib /usr/lib|/lib${LIBDIRSUFFIX} /usr/lib${LIBDIRSUFFIX}|g" \
  -i aclocal.m4

autoreconf -f -i

CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \
./configure \
  --prefix=/usr \
  --libdir=/usr/lib${LIBDIRSUFFIX} \
  --sysconfdir=/etc \
  --localstatedir=/var \
  --mandir=/usr/man \
  --with-tcl=/usr/lib${LIBDIRSUFFIX} \
  --with-tk=/usr/lib${LIBDIRSUFFIX} \
  --disable-debug \
  --enable-production \
  --build=$ARCH-slackware-linux

# Change the resulting Makefile so that we can use DESTDIR
sed -e "s|\$(prefix)|\$(DESTDIR)\$(prefix)|g" -i Makefile

make 
make install DESTDIR=$PKG

cd ..

# Correct path of include files
mkdir -p $PKG/usr/include
mv $PKG/usr/inc $PKG/usr/include/$PRGNAM

# Correct path of source files
mkdir -p $PKG/usr/src/$PRGNAM
( set -e
  cd $PKG/usr
  mv config.h src/$PRGNAM/
  cd src
  for d in *; do
    if [ "$d" != "$PRGNAM" ]; then 
      mv $d $PRGNAM/
    fi
  done
) || exit 1

# Remove unnecessary (and confusing) files
rm -r $PKG/usr/{lin,Linux,env_DRAW.sh}

mkdir -p $PKG/usr/share/$PRGNAM
cp -a data samples $PKG/usr/share/$PRGNAM

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

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a \
  README LICENSE ros/README.txt \
  doc/Overview doc/ReferenceDocumentation \
  $PKG/usr/doc/$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

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