# Copyright 1999-2006 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $

inherit eutils
MY_PN=OpenSceneGraph
MY_P=${MY_PN}-${PV}-1

DESCRIPTION="Cross-platform, high performance 3D graphics toolkit"
HOMEPAGE="http://www.openscenegraph.org/"
SRC_URI="${HOMEPAGE}downloads/developer/${MY_P}.tar.gz
		examples? ( ${HOMEPAGE}downloads/data/${MY_PN}-Data-1.0.zip )"

LICENSE="OSGPL free-noncomm"
SLOT="0"
KEYWORDS="~x86"
IUSE="coin doc examples gdal gif glut introspection inventor
	jasper jpeg png producer tiff truetype xine"

DEPEND="virtual/opengl
		>=dev-libs/openthreads-1.4.2
		coin? ( media-libs/coin )
		doc? ( app-doc/doxygen )
		gdal? ( sci-libs/gdal )
		gif? ( media-libs/giflib )
		glut? ( virtual/glut )
		inventor? ( media-libs/openinventor )
		jasper? ( media-libs/jasper )
		jpeg? ( media-libs/jpeg )
		png? ( media-libs/libpng
				sys-libs/zlib )
		producer? ( >=media-libs/openproducer-1.0.1 )
		tiff? ( media-libs/tiff )
		truetype? ( media-libs/freetype )
		xine? ( media-libs/xine-lib )"

S="${WORKDIR}/${MY_P}"

pkg_setup() {
	if use examples && ! use producer ; then
		echo
		eerror "Open Producer is required to build the"
		eerror "examples."
		echo
		eerror "To continue, either remove \"examples\""
		eerror "from your USE flags or add \"producer\"."
		echo
		die
	fi
}

src_unpack() {
	unpack ${A}
	cd "${S}"

	sed -i "s:OPTF.*=.*:OPTF=\"${CXXFLAGS}\":" \
		Make/makedefs \
		|| die "sed CXXFLAGS failed"

	if use gif ; then
		sed -i 's/-lungif/-lgif/' \
			Make/makedefs \
			|| die "sed lgif failed"
	fi

	if use doc ; then
		# Fix OUTPUT_DIRECTORY
		sed -i 's:\$(OSGHOME)/::' \
			doc/Doxyfiles/all_Doxyfile \
			|| die "sed doxyfile failed"
	fi
}

src_compile() {
	# This package has no configure script.
	# Compilation options in the form of
	# 	OPTION ?= yes/no
	# are read from a given file, specified 
	# in ${OSG_DEPENDENCIES}

	function myconf {
		# Write config options to dependencies file
		einfo "${confopt} = ${2}"
		echo "${1} ?= ${2}" >> "${T}/my_dependencies"
	}

		for useopt in ${IUSE} ; do

			# Match each USE flag with a config option
			case ${useopt} in
				coin)
					local confopt=COIN_INSTALLED
					;;
				doc)
					# doc isn't used here
					continue
					;;
				examples)
					local confopt=COMPILE_EXAMPLES
					;;
				gdal)
					local confopt=GDAL_INSTALLED
					;;
				gif)
					local confopt=LIBUNGIF_INSTALLED
					;;
				glut)
					local confopt=GLUT_INSTALLED
					;;
				introspection)
					local confopt=COMPILE_INTROSPECTION
					;;
				inventor)
					local confopt=INVENTOR_INSTALLED
					;;
				jasper)
					local confopt=JASPER_INSTALLED
					;;
				jpeg)
					local confopt=LIBJPEG_INSTALLED
					;;
				png)
					local confopt=LIBPNG_INSTALLED
					;;
				producer)
					local confopt=PRODUCER_INSTALLED
					;;
				tiff)
					local confopt=LIBTIFF_INSTALLED
					;;
				truetype)
					local confopt=FREETYPE_INSTALLED
					;;
				xine)
					local confopt=XINE_INSTALLED
					;;
			esac

			use ${useopt} && \
				myconf ${confopt} yes \
			||	myconf ${confopt} no

		done

		# SGI OpenGL Performer. No ebuild available to test.
		local confopt=PERFORMER_INSTALLED
		myconf ${confopt} no

		# Quicktime support is for Mac OS X Only.
		local confopt=QUICKTIME_INSTALLED
		myconf ${confopt} no

	export OSG_DEPENDENCIES="${T}/my_dependencies"
	emake || die "emake failed"

	use doc && doxygen doc/Doxyfiles/all_Doxyfile
}

src_install() {
	make install \
		"INST_LOCATION=${D}/usr/" \
		"INST_EXAMPLES=${D}/usr/bin/" \
		|| die "make install failed"

	if use doc ; then
		dodoc doc/ProgrammingGuide/ProgrammingGuide.odt
		dohtml -r doc/doxygen/html/
	fi

	dodoc AUTHORS.txt ChangeLog NEWS.txt README.txt

	insinto "${ROOT}/usr/$(get_libdir)/pkgconfig"
	doins "${S}/Make/${PN}.pc"

	if use examples ; then
		cd "${S}/examples"
		for example in $(ls) ; do
			rm -rf ${example}/Linux32.Opt/
		done

		local expath="/usr/share/doc/${PF}/examples/"

		mkdir -p "${D}/${expath}"

		cp -r "${S}/examples" \
			"${D}/${expath}source"
		cp -r "${WORKDIR}/${MY_PN}-Data" \
			"${D}/${expath}data"

		echo "OSG_FILE_PATH=${expath}data" \
			> "${T}/99${PN}"
		doenvd "${T}/99${PN}"
	fi

	rm -rf "${D}/usr/share/${MY_PN}/"
}