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

inherit fortran eutils java-utils-2 mpi

MY_P=${P/_/}
DESCRIPTION="MPI development tools"
HOMEPAGE="http://www-unix.mcs.anl.gov/perfvis/download/index.htm"
SRC_URI="ftp://ftp.mcs.anl.gov/pub/mpi/${PN%2}/${MY_P}.tar.gz"

LICENSE="as-is"
SLOT="0"
KEYWORDS="~amd64"
IUSE="minimal fortran threads debug"

MPI_EMPI_COMPAT="openmpi mpich2"

COMMON_DEPEND="$(mpi_pkg_deplist)
	!minimal? ( x11-libs/libXtst
		x11-libs/libXi )"

DEPEND="!minimal? ( >=virtual/jdk-1.4 )
	${COMMON_DEPEND}"

RDEPEND="!minimal? ( >=virtual/jre-1.4 )
	${COMMON_DEPEND}"

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


# README:
# This ebuild is created to handle building with both mpich2 and openmpi.
# However, without empi (in the science overlay), and some further
# conversion to use mpi.eclass, we can only handle one implementation
# at a time.  I still believe it's better to have the ebuild setup
# correctly in preperation.

pkg_setup() {
	local i

	mpi_pkg_setup
	MPE_IMP=$(mpi_built_with)

	if use fortran ; then
		FORTRAN="g77 gfortran ifort ifc"
		fortran_pkg_setup
	fi

	if use threads; then
		if ! built_with_use ${CATEGORY}/${MPE_IMP} threads; then
			eerror "Thread logging support in ${P} requires you build"
			eerror "${CATEGORY}/${MPE_IMP} with threading support."
			die "Fix your USE flags."
		fi
	fi

	export JFLAGS="${JFLAGS} $(java-pkg_javac-args)"

	if [[ "${MPE_IMP}" == openmpi* ]] && [ -z "${MPE2_FORCE_OPENMPI_TEST}" ]; then
		elog ""
		elog "Currently src_test fails on collchk with openmpi, hence"
		elog "testing is disabled by default.  If you would like to"
		elog "force testing, please add MPE_FORCE_OPENMPI_TEST=1"
		elog "to your environment."
		elog ""
	fi

	einfo "Building with support for: ${CATEGORY}/${MPE_IMP}"
}

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

	# Don't assume path contains ./
	sed -i 's,\($MPERUN\) $pgm,\1 ./$pgm,' sbin/mpetestexeclog.in
}

src_compile() {
	local c="--with-mpicc=$(get_eselect_var MPI_CC)"
	local d=$(get_mpi_dir)

	if [ -n "${FORTRANC}" ]; then
		c="${c} --with-mpif77=$(get_eselect_var MPI_F77)"
		export F77=${FORTRANC}
	else
		c="${c} --disable-f77"
	fi

	if use minimal; then
		c="${c} --enable-slog2=no --disable-rlog --disable-sample"
	else
		c="${c} --with-java2=$(java-config --jdk-home) --enable-slog2=build"
	fi

	if [[ "${MPE_IMP}" == openmpi* ]]; then
		c="${c} --disable-rlog --disable-sample"
	fi

	mpi_conf_args="${c}
		--sysconfdir=/etc/${PN}
		--with-htmldir=${d}/usr/share/${PN}
		--with-docdir=${d}/usr/share/${PN}
		--enable-collchk
		--enable-wrappers
		$(use_enable !minimal graphics)
		$(use_enable threads threadlogging )
		$(use_enable debug g)"
	mpi_src_compile

#--with-mpicc=/usr/bin/mpicc \
#--with-mpif77=/usr/bin/mpif77 \
}

src_test() {
	local rc
	local d=$(get_mpi_dir)

	cd "${S}"

	if [[ "${MPE_IMP}" == mpich2* ]]; then
		"${ROOT}"${d}/usr/bin/mpd -d --pidfile="${T}"/mpd.pid
	elif [[ "${MPE_IMP}" == openmpi* ]] && [ -z "${MPE2_FORCE_OPENMPI_TEST}" ]; then
		elog
		elog "Skipping tests for openmpi"
		elog
		return 0
	fi

	emake \
		CC="${S}"/bin/mpecc \
		FC="${S}"/bin/mpefc \
		MPERUN="${ROOT}${d}/usr/bin/mpiexec -n 4" \
		CLOG2TOSLOG2="${S}/src/slog2sdk/bin/clog2TOslog2" \
		check;
		rc=${?}
	if [[ "${MPE_IMP}" == mpich2* ]]; then
		"${ROOT}"${d}/usr/bin/mpdallexit || kill $(<"${T}"/mpd.pid)
	fi

	return ${rc}
}

src_install() {
	local d=$(get_mpi_dir)
	cd "${S}"
	emake DESTDIR="${D}" install || die
	rm -f "${D}"/${d}/usr/sbin/mpeuninstall
}