#!/bin/sh

# Slackware build script for cwp (customizable weather plasmoid)

# Written by M.Dinslage  contact: daedra1980@gmail.com
# Big thanks to ponce for the patches.

PRGNAM=opencv
SRCNAM=OpenCV
VERSION=${VERSION:-2.1.0}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}

# 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 [ "$ARCH" = "i486" ]; then
  SLKCFLAGS="-O2 -march=i486 -mtune=i686"
  LIBDIRSUFFIX=""
  SLKLDFLAGS="-L/usr/lib -L/lib"
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
  LIBDIRSUFFIX=""
  SLKLDFLAGS="-L/usr/lib -L/lib"
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
  SLKLDFLAGS="-L/usr/lib64 -L/lib64"
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
  SLKLDFLAGS="-L/usr/lib -L/lib"
fi

set -e

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $SRCNAM-$VERSION
tar xvf $CWD/$SRCNAM-$VERSION.tar.bz2
cd $SRCNAM-$VERSION
chown -R root:root .
find . \
 \( -perm 777 -o -perm 775 -o -perm 711 -o -perm 555 -o -perm 511 \) \
 -exec chmod 755 {} \; -o \
 \( -perm 666 -o -perm 664 -o -perm 600 -o -perm 444 -o -perm 440 -o -perm 400 \) \
 -exec chmod 644 {} \;

# patch for libpng-1.4
patch -p1 < $CWD/libpng-1.4.patch

# Honor LIB_SUFFIX http://sourceforge.net/tracker/index.php?func=detail&aid=2876292&group_id=22870&atid=376679
# rewritten by ponce for 2.1.0
patch -p1 < $CWD/libopencv-2.1.0-libdir.patch

mkdir -p build
cd build
  LDFLAGS=$SLKLDFLAGS cmake \
    -DCMAKE_C_FLAGS="$SLKCFLAGS" \
    -DCMAKE_CXX_FLAGS="$SLKCFLAGS" \
    -DCMAKE_BUILD_TYPE="Release" \
    -DCMAKE_INSTALL_PREFIX=/usr \
    -DINSTALL_MAN_DIR=man \
    -DINSTALL_DOC_DIR=doc/$PRGNAM-$VERSION \
    -DBUILD_SHARED_LIBS=ON \
    -DLIB_SUFFIX=$LIBDIRSUFFIX \
    -DLIB_INSTALL_DIR=/usr/lib$LIBDIRSUFFIX \
    ..
  make VERBOSE=1
  make install DESTDIR=$PKG

cd -

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

mkdir $PKG/usr/doc
mv $PKG/usr/share/$PRGNAM/doc $PKG/usr/doc/$PRGNAM-$VERSION
cp -a README doc/opencv.pdf $PKG/usr/doc/$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}