#!/bin/sh

# Heavily based on the Slackware 13.1 SlackBuild
# Written by jimmy_page_89 ( jimmy_page_89@hotmail.it ) 
# Last build from jimmy_page_89 ( jimmy_page_89@hotmail.it )

# Slackware build script for opencv
# Official Site: http://opencv.willowgarage.com/wiki/

# 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.

set -e

# Set to YES to enable ffmpeg support
SB_FFMPEG=${SB_FFMPEG:-NO}
# Set to YES to enable gstreamer support (take precedence over ffmpeg)
SB_GST=${SB_GST:-YES}
# Set to YES to enable xine-lib support
SB_XINE=${SB_XINE:-YES}

PKGNAME=opencv
DNAME=OpenCV
VERSION=${VERSION:-2.1.0}
BUILD=${BUILD:-1sl}
ARCH=${ARCH:-x86_64}
SOURCE="http://prdownloads.sourceforge.net/opencvlibrary/$DNAME-$VERSION.tar.bz2"

if [ ! -e $DNAME-$VERSION.tar.bz2 ];then
  wget $SOURCE
fi

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

if [ "$ARCH" = "i486" ]; then
  SLKCFLAGS="-O2 -march=i486 -mtune=i686"
  LIBDIRSUFFIX=""
  SLKLDFLAGS="-L/usr/lib$LIBDIRSUFFIX"
elif [ "$ARCH" = "i586" ]; then
  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
  LIBDIRSUFFIX=""
  SLKLDFLAGS="-L/usr/lib$LIBDIRSUFFIX"
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
  LIBDIRSUFFIX=""
  SLKLDFLAGS="-L/usr/lib$LIBDIRSUFFIX"
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
  SLKLDFLAGS="-L/usr/lib$LIBDIRSUFFIX"
fi

rm -rf $TMP
mkdir -p $TMP $PKG $OUTPUT

cd $TMP
tar xvf $CWD/$DNAME-$VERSION.tar.bz2
cd $DNAME-$VERSION
### installazione patch (se presenti)
patch -p1 -E --backup -z .libdir --verbose -i $CWD/$PKGNAME-cmake-libdir.patch
patch -p1 -E --backup --verbose -i $CWD/$PKGNAME-libpng-1.4.patch

if [ "${SB_FFMPEG}" = "YES" -a "${SB_GST}" = "YES" ] ;then
  SB_FFMPEG=NO
  SB_GST=YES
fi
[ "${SB_FFMPEG}" = "YES" ] || SB_FFMPEG=OFF
[ "${SB_GST}" = "YES" ] || SB_GST=OFF
[ "${SB_XINE}" = "YES" ] || SB_XINE=OFF

export CFLAGS="${SLKCFLAGS}"
export CXXFLAGS="${SLKCFLAGS}"
export FFLAGS="${SLKCFLAGS}"

chown -R root:root .
chmod -R u+w,go+r-w,a-s .

mkdir -p build
( cd build || exit $?

  cmake .. \
    -DCMAKE_INSTALL_PREFIX:PATH=/usr \
    -DSYSCONF_INSTALL_DIR:PATH=/etc \
    -DINCLUDE_INSTALL_DIR:PATH=/usr/include \
    -DLIB_INSTALL_DIR:PATH=/usr/lib${LIBDIRSUFFIX} \
    -DLIB_SUFFIX=${LIBDIRSUFFIX} \
    -DSHARE_INSTALL_PREFIX:PATH=/usr/share \
    -DMAN_INSTALL_DIR:PATH=/usr/man \
    -DCMAKE_BUILD_TYPE=Release \
    -DBUILD_SHARED_LIBS:BOOL=ON \
    -DCMAKE_SKIP_RPATH:BOOL=ON \
    -DCMAKE_VERBOSE_MAKEFILE:BOOL=ON \
    -DUSE_O3:BOOL=OFF \
    -DBUILD_SWIG_PYTHON_SUPPORT=1 \
    -DINSTALL_C_EXAMPLES=1 \
    -DINSTALL_PYTHON_EXAMPLES=1 \
    -DWITH_FFMPEG=${SB_FFMPEG} \
    -DWITH_GSTREAMER=${SB_GST} \
    -DWITH_XINE=${SB_XINE}

  make
  make install DESTDIR=$PKG INSTALL="install -p" CPPROG="cp -p"

) 

### In this section you may remove some not needed files or move that file in other path

rm -f \
  $PKG/usr/share/$PKGNAME/samples/c/build_all.sh \
  $PKG/usr/share/$PKGNAME/samples/c/cvsample.dsp \
  $PKG/usr/share/$PKGNAME/samples/c/cvsample.vcproj \
  $PKG/usr/share/$PKGNAME/samples/c/facedetect.cmd

cat > $PKG/usr/share/$PKGNAME/samples/c/GNUmakefile << 'EOF'
CFLAGS := `pkg-config --cflags opencv` $(CFLAGS)
CXXFLAGS := `pkg-config --cflags opencv` $(CXXFLAGS)
LDFLAGS := `pkg-config --libs opencv` $(LDFLAGS)

PROGRAMS := $(patsubst %.c,%,$(wildcard *.c)) $(patsubst %.cpp,%,$(wildcard *.cpp))

.PHONY: all clean
all: $(PROGRAMS)
clean:
	rm -f $(PROGRAMS)
EOF

install -m644 build/cvconfig.h $PKG/usr/include/$PKGNAME/cvconfig.h || exit 1

rm -rf $PKG/usr/share/$PKGNAME/{samples/octave/,ChangeLog,THANKS}

### copy some documentation files
mkdir -p $PKG/usr/doc/$PKGNAME-$VERSION
cat $CWD/$PKGNAME.SlackBuild > $PKG/usr/doc/$PKGNAME-$VERSION/$PKGNAME.SlackBuild
cat $CWD/slack-desc > $PKG/usr/doc/$PKGNAME-$VERSION/slack-desc

### compress man pages
if [ -d $PKG/usr/man ]; then
    ( cd $PKG/usr/man
      find . -type f -exec gzip -9 {} \;
      for i in $( find . -type l ) ; do ln -s $( readlink $i ).gz $i.gz ; rm $i ; done
    )
fi

### now you must do 'strip' all binary files
( cd $PKG
  find . | xargs file | grep "executable" | grep ELF | cut -f 1 -d : | xargs -r strip --strip-unneeded 2> /dev/null || true
  find . | xargs file | grep "shared object" | grep ELF | cut -f 1 -d : | xargs -r strip --strip-unneeded 2> /dev/null || true
  find . | xargs file | grep "current ar archive" | cut -f 1 -d : | xargs -r strip --strip-unneeded 2> /dev/null || true
)

### popolate the install/ directory
mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc

### reset owner and create slack-required file.
cd $PKG
chown -R root:root $PKG

if [ -x "$(which depfinder 2>/dev/null)" ];then
  depfinder -f -s -a -p $PKG
  mv slack-required $CWD/
elif [ -x "$(which requiredbuilder 2>/dev/null)" ];then
  requiredbuilder -y -v -s $CWD $PKG
else
  touch $CWD/slack-required
fi

### finally make the package. 
/sbin/makepkg -l y -c n $OUTPUT/$PKGNAME-$VERSION-$ARCH-$BUILD.${PKGTYPE:-txz}

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