# Copyright 1999-2015 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Id$

EAPI=2

inherit eutils

MYP=HepMC-${PV}

DESCRIPTION="Event Record for Monte Carlo Generators"
HOMEPAGE="http://lcgapp.cern.ch/project/simu/HepMC/"
SRC_URI="http://lcgapp.cern.ch/project/simu/HepMC/download/${MYP}.tar.gz"

LICENSE="GPL-2"
SLOT="0"
KEYWORDS="amd64 x86"
IUSE="doc examples gev cm static-libs"

RDEPEND=""
DEPEND="${RDEPEND}
	doc? ( app-doc/doxygen )"

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

src_prepare() {
	epatch "${FILESDIR}"/${PN}-2.06.04-gcc46.patch
}
src_configure() {
	# use MeV over GeV and mm over cm
	local length_conf="MM"
	use cm && length_conf="CM"
	local momentum_conf="MEV"
	use gev && momentum_conf="GEV"
	econf \
		--with-length=${length_conf} \
		--with-momentum=${momentum_conf} \
		$(use_enable static-libs static)
}

src_compile() {
	emake || die "emake failed"
	if use doc; then
		cd doc
		doxygen doxygen.conf || die "doc building failed"
	fi
}

src_install() {
	emake \
		DESTDIR="${D}" \
		INSTALLDIR=/usr/share/doc/${PF}/examples \
		doc_installdir=/usr/share/doc/${PF} \
		install || die "emake install failed"

	dodoc README AUTHORS ChangeLog
	insinto /usr/share/doc/${PF}
	if use doc; then
		doins -r doc/html doc/*.pdf || die
	else
		rm -f "${D}"/usr/share/doc/${PF}/*pdf
	fi
	use examples || rm -rf "${D}"/usr/share/doc/${PF}/examples
}