# Copyright 1999-2009 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/dev-cpp/eigen/eigen-2.0.4-r1.ebuild,v 1.1 2009/08/21 16:00:02 cryos Exp $

EAPI="2"

inherit cmake-utils

DESCRIPTION="Lightweight C++ template library for vector and matrix math, a.k.a. linear algebra"
HOMEPAGE="http://eigen.tuxfamily.org/"
SRC_URI="http://bitbucket.org/eigen/eigen2/get/${PV}.tar.bz2"

LICENSE="GPL-3"
KEYWORDS="~alpha ~amd64 ~hppa ~ia64 ~ppc ~ppc64 ~x86"
SLOT="2"
IUSE="debug doc examples"

DEPEND="
	examples? (
		x11-libs/qt-gui:4
		x11-libs/qt-opengl:4
	)
"
RDEPEND="${DEPEND}
	!dev-cpp/eigen:0
"

S="${WORKDIR}/eigen2"

src_prepare() {
	# fix compilation agains eigen on the PPC platform:
	epatch "${FILESDIR}/${PN}-ppc-define.patch"
	epatch "${FILESDIR}/${P}-qt-test.patch"
	epatch "${FILESDIR}/${P}-gcc-4-1.patch"
}

src_configure() {
	# benchmarks (BTL) brings up damn load of external deps including fortran
	# compiler
	# library hangs up complete compilation proccess, test later
	mycmakeargs="
		-DEIGEN_BUILD_LIB=OFF
		-DEIGEN_BUILD_BTL=OFF
		$(cmake-utils_use examples EIGEN_BUILD_DEMOS)
	"
	cmake-utils_src_configure
}

src_compile() {
	cmake-utils_src_compile
	if use doc; then
		cd "${CMAKE_BUILD_DIR}"
		emake doc || die "building documentation failed"
	fi
}

src_install() {
	cmake-utils_src_install
	if use doc; then
		cd "${CMAKE_BUILD_DIR}"/doc
		dohtml -r html/* || die "dohtml failed"
	fi
	if use examples; then
		cd "${CMAKE_BUILD_DIR}"/demos
		dobin mandelbrot/mandelbrot opengl/quaternion_demo || die "dobin failed"
	fi
}

src_test() {
	mycmakeargs="${mycmakeargs}
		-DEIGEN_BUILD_TESTS=ON
		-DEIGEN_TEST_NO_FORTRAN=ON"
	cmake-utils_src_configure
	cmake-utils_src_compile
	cmake-utils_src_test
}