# Copy:right 1999-2004 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $

# TODO:
#   o Warning: CMake is forcing CMAKE_CXX_COMPILER to "/usr/lib/distcc/bin/g++" to
#     match that imported from VTK.  This is required because C++ projects must use
#     the same compiler.  If this message appears for more than one imported
#     project, you have conflicting C++ compilers and will have to re-build one of
#     those projects.
#     I get that type of warning when I use FEATURES="distcc" to emerge vtk
# Mini changelog:
#   o fixed symlinks in /usr/lib/python2.3/site-packages/vtk_python
#   o PATH, and VTK_DATA_ROOT problems not apparrent anymore
#   o java wrapping works now
#   o fixed some style changes according to ebuild guide
#   o FIXME: need to fix Examples/CMakeLists.txt to build other examples
#   o tcl/tk is actually required to compile, still using tcltk use flags for
#     enabling tcltk wrapping
#	o added mpi support
inherit distutils flag-o-matic versionator

DESCRIPTION="visualization toolkit"
HOMEPAGE="http://www.vtk.org"
LICENSE="VTK"

SLOT="0"
KEYWORDS="~x86"

IUSE="doc data example hybrid java mpi parallel patented python tcltk"

RDEPEND="java? ( virtual/jdk )
	mpi? ( sys-cluster/mpich )
	python? ( >=dev-lang/python-2.0 )
	>=dev-lang/tcl-8.2.3
	>=dev-lang/tk-8.2.3
	media-libs/jpeg 
	media-libs/tiff 
	media-libs/libpng 
	sys-libs/zlib 
	dev-libs/expat"
DEPEND="${RDEPEND}
	>=dev-util/cmake-1.8
	virtual/x11
	virtual/opengl"

MY_PV="$(get_version_component_range 1-2)"
SRC_URI="ftp://public.kitware.com/pub/vtk/vtk${MY_PV}/moved_to_sourceforge/VTK-${PV}.tar.gz
	doc? ( ftp://public.kitware.com/pub/vtk/vtk${MY_PV}/moved_to_sourceforge/VTKDocHtml-${MY_PV}.tar.gz )
	data? ( ftp://public.kitware.com/pub/vtk/vtk${MY_PV}/moved_to_sourceforge/VTKData-${MY_PV}.tar.gz )"
S=${WORKDIR}/VTK


src_compile() {
	# gcc versions 3.2.x seem to have sse-related bugs that are triggered
	# by VTK when compiling for pentium3/4
	if [ `get-flag -march` == "-march=pentium4" ] && has_version=sys-libs/glibc-3.2*; then
		filter-mfpmath sse
		filter-flags "-msse -msse2"
	fi

	# build list of config variable define's to pass to cmake
	CMAKE_VARIABLES="-DCMAKE_INSTALL_PREFIX:PATH=/usr"
	CMAKE_VARIABLES="${CMAKE_VARIABLES} -DBUILD_SHARED_LIBS:BOOL=ON"
	CMAKE_VARIABLES="${CMAKE_VARIABLES} -DVTK_USE_SYSTEM_JPEG:BOOL=ON"
	CMAKE_VARIABLES="${CMAKE_VARIABLES} -DVTK_USE_SYSTEM_PNG:BOOL=ON"
	CMAKE_VARIABLES="${CMAKE_VARIABLES} -DVTK_USE_SYSTEM_TIFF:BOOL=ON"
	CMAKE_VARIABLES="${CMAKE_VARIABLES} -DVTK_USE_SYSTEM_ZLIB:BOOL=ON"
	CMAKE_VARIABLES="${CMAKE_VARIABLES} -DVTK_USE_SYSTEM_EXPAT:BOOL=ON"
	CMAKE_VARIABLES="${CMAKE_VARIABLES} -DBUILD_TESTING:BOOL=OFF"
	if use java; then
		CMAKE_VARIABLES="${CMAKE_VARIABLES} -DVTK_WRAP_JAVA:BOOL=ON"
		CMAKE_VARIABLES="${CMAKE_VARIABLES} -DJAVA_AWT_LIBRARY:PATH=`java-config -O`/jre/lib/i386/libjawt.so"
		CMAKE_VARIABLES="${CMAKE_VARIABLES} -DJAVA_AWT_INCLUDE_PATH:PATH=`java-config -O`/include"
		CMAKE_VARIABLES="${CMAKE_VARIABLES} -DJAVA_INCLUDE_PATH:PATH=`java-config -O`/include"
		CMAKE_VARIABLES="${CMAKE_VARIABLES} -DJAVA_INCLUDE_PATH2:PATH=`java-config -O`/include/linux"
	fi
	if use mpi; then
		CMAKE_VARIABLES="${CMAKE_VARIABLES} -DVTK_USE_MPI:BOOL=ON"
		use !parallel && CMAKE_VARIABLES="${CMAKE_VARIABLES} -DVTK_USE_PARALLEL:BOOL=ON"
	fi
	use python && CMAKE_VARIABLES="${CMAKE_VARIABLES} -DVTK_WRAP_PYTHON:BOOL=ON"
	use tcltk && CMAKE_VARIABLES="${CMAKE_VARIABLES} -DVTK_WRAP_TCL:BOOL=ON"
	# local use flags
	use data && CMAKE_VARIABLES="${CMAKE_VARIABLES} -DVTK_DATA_ROOT:PATH=/usr/share/${PN}/data"
	use example && CMAKE_VARIABLES="${CMAKE_VARIABLES} -DBUILD_EXAMPLES:BOOL=ON"
	use hybrid && CMAKE_VARIABLES="${CMAKE_VARIABLES} -DVTK_USE_HYBRID:BOOL=ON"
	use parallel && CMAKE_VARIABLES="${CMAKE_VARIABLES} -DVTK_USE_PARALLEL:BOOL=ON"
	use patented && CMAKE_VARIABLES="${CMAKE_VARIABLES} -DVTK_USE_PATENTED:BOOL=ON"

	cmake ${CMAKE_VARIABLES} . || die "cmake configuration failed"
	emake || die "emake failed"
}

src_install() {
	make install DESTDIR=${D} || die "make install failed"
	# fix config file
	dosed -i -e "s:${D}:/:g" /usr/lib/${PN}/VTKConfig.cmake

	LDPATH="/usr/lib/${PN}"
	# install python modules
	if use python; then
		distutils_python_version
		LDPATH="${LDPATH}:/usr/lib/python${PYVER}/site-packages/${PN}_python"
		cd ${S}/Wrapping/Python
		docinto vtk_python
		distutils_src_install

		# make symlinks to vtk python modules
		FILES="${D}/usr/lib/vtk/libvtk*Python*.so"
		for file in ${FILES}
			do
				dosym ${file} /usr/lib/python${PYVER}/site-packages/${PN}_python
			done
	fi

	# install jar
	if use java; then
		dodir /usr/share/${PN}
		cp ${S}/bin/vtk.jar ${D}/usr/share/${PN}
		chmod 644 ${D}/usr/share/${PN}/vtk.jar
	fi

	
	# install documentation
	use doc && dohtml -r ${WORKDIR}/html/

	# install examples
	if use example; then
		dodir /usr/share/${PN}
		cp -a ${S}/Examples ${D}/usr/share/${PN}/examples

		# fix example's permissions
		find ${D}/usr/share/${PN}/examples -type d -exec chmod 0755 {} \;
		find ${D}/usr/share/${PN}/examples -type f -exec chmod 0644 {} \;
	fi

	# install data
	if use data; then
		# VTKData uses a hyphen instead of a dot
		MY_PV_HYPHEN=`echo ${MY_PV} | sed -e "s/\./-/"`
		dodir /usr/share/${PN}
		cp -a ${WORKDIR}/VTKData-release-${MY_PV_HYPHEN} ${D}/usr/share/${PN}/data
		
		# fix data's permissions
		find ${D}/usr/share/${PN}/data -type d -exec chmod 0755 {} \;
		find ${D}/usr/share/${PN}/data -type f -exec chmod 0644 {} \;
	fi

	# environment
	echo "LDPATH=${LDPATH}" > ${T}/40${PN}
	use data && echo "VTK_DATA_ROOT=/usr/share/${PN}/data" >> ${T}/40${PN}
	if use java; then
		echo "CLASSPATH=/usr/share/${PN}/${PN}.jar" >> ${T}/40${PN}
		echo "LD_LIBRARY_PATH=/usr/lib/${PN}" >> ${T}/40${PN}
	fi
	use tcltk && echo "TCLLIBPATH=/usr/lib/${PN}/tcl" >> ${T}/40${PN}
	doenvd ${T}/40${PN}
}

pkg_postinst() {
	if use patented ; then
		ewarn "Using patented classes in commercial application requires a licence."
		ewarn "For more information read"
		ewarn "http://public.kitware.com/cgi-bin/vtkfaq?req=show&file=faq07.005.htp"
	fi
}