# Copyright 1999-2008 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $

EAPI="2"

inherit versionator multilib toolchain-funcs eutils

MV=$(get_major_version)

DESCRIPTION="Virtual Monte Carlo"
HOMEPAGE="http://root.cern.ch/root/vmc/VirtualMC.html"
SRC_URI="ftp://root.cern.ch/root/vmc/geant4_vmc.${PV}.tar.gz"

LICENSE="public domain"
SLOT="0"
KEYWORDS="~x86 ~amd64"
IUSE="doc examples vgm"

DEPEND="sci-physics/root
		sci-physics/clhep
		sci-physics/geant:4[examples?]
		vgm? ( sci-physics/vgm )
		doc? ( app-doc/doxygen )"
RDEPEND="${DEPEND}"

S="${WORKDIR}/geant4_vmc"

pkg_setup() {
	use vgm && [ -z USE_VGM ] && \
		die "USE_VGM is not set, check your environment anf sci-physics/vgm installation."

	if [ -z ${G4SYSTEM} ]; then
		elog "Your Geant-4 environment is not set."
		has_version ">=sci-physics/geant-4.9.4" && \
			elog "Yo use Geant4 version 4.9.4 or newer." && \
			elog "Use script /usr/share/geant4/config/geant-*.{sh|csh} to setup" && \
			elog "your backward compability environment in following way:" && \
			elog "	source /usr/share/geant4/config/geant-xxxx.sh" && \
			elog "where xxxx is your geant version."
		die "Installation broken"
	fi
}

src_compile() {
	cd "${S}/g4root"
	emake || die "emake failed"
	cd "${S}/source"
	emake || die "emake failed"
	use doc && doxygen
}

src_install() {
	cd ${S}
	PLATFORM=$(root-config --arch)
	insinto /usr/$(get_libdir)/
	doins lib/tgt_${PLATFORM}/{libg4root,libgeant4vmc}.so

	insinto /usr/include/
	doins -r include/*

	insinto /usr/share/doc/${PF}
	dodoc README LICENSE
	if use doc; then
		doins Geant4VMC.html
		doins -r doc/*
	fi
	use examples &&	doins -r examples
}