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

inherit eutils toolchain-funcs flag-o-matic

DESCRIPTION="Charm++ is a message-passing parallel language and runtime system."
LICENSE="charm"
HOMEPAGE="http://charm.cs.uiuc.edu/"
SRC_URI="${PN}_src.tar.gz"
S="${WORKDIR}/${PN}"
SLOT="0"
KEYWORDS="~amd64 ~x86"
IUSE="cmkopt tcp smp doc icc"

RESTRICT="fetch"

DEPEND="icc? ( >=dev-lang/icc-8.1 )
	doc? (
		app-text/poppler
		dev-tex/latex2html
		virtual/tetex
	)"

case ${ARCH} in

	x86)
		CHARM_ARCH="net-linux" ;;

	amd64)
		CHARM_ARCH="net-linux-amd64" ;;
esac

CHARM_DOWNLOAD="http://charm.cs.uiuc.edu/download/"

pkg_nofetch() {
	echo
	einfo "Please download the daily ${PN}_src.tar.gz from"
	einfo "${CHARM_DOWNLOAD}"
	einfo "and then move it to ${DISTDIR}"
	echo
}

src_unpack() {
	unpack ${A}

	# TCP instead of default UDP for socket comunication
	# protocol
	if use tcp; then
		CHARM_OPTS="${CHARM_OPTS} tcp"
	fi

	# enable direct SMP support using shared memory
	if [ use smp ] && [ -x ${ARCH} != amd64 ]; then
		CHARM_OPTS="${CHARM_OPTS} smp"
	fi

	# compile with icc if requested
	if use icc; then
		if [ $(tc-getCC) != "icc" ]; then
			die "You cannot use $(tc-getCC) with USE='icc'"
		fi
		CHARM_OPTS="${CHARM_OPTS} icc"
	fi

	# CMK optimization
	if use cmkopt; then
		append-flags -DCMK_OPTIMIZE=1
	fi
}

src_compile() {
	# build charmm++ first
pwd
cd "${S}"
	./build charm++ ${CHARM_ARCH} ${CHARM_OPTS} ${CFLAGS} || \
		die "Failed to build charm++"

	# make pdf/html docs
	if use doc; then
		cd "${S}"/doc
		make doc || die "failed to create pdf/html docs"
	fi
}

src_install() {
	# make charmc play well with gentoo before
	# we move it into /usr/bin
	einfo "Fixing paths in charmc wrapper"
	epatch "${FILESDIR}"/${P}-charmc-gentoo.patch

	cd "${S}"
	sed -e "s/gentoo-include/${P}/" -i ./src/scripts/charmc || \
		die "failed patching charmc script"

	# install binaries
	cd "${S}"/bin
	dobin ./charmd ./charmd_faceless ./charmr* ./charmc ./charmxi \
		./conv-cpm ./dep.pl || die "Failed to install binaries"

	# install headers
	cd "${S}"/include
	insinto /usr/include/${P}
	doins * || die "failed to install header files"

	# install static libs
	cd "${S}"/lib
	dolib.a * || die "failed to install static libs"

	# install shared libs
	cd "${S}"/lib_so
	dolib.so * || die "failed to install shared libs"

	# basic docs
	cd "${S}"
	dodoc CHANGES README  || die "Failed to install docs"

	# install examples after fixing path to charmc
	find examples/ -name 'Makefile' | xargs sed \
		-r "s:(../)+bin/charmc:/usr/bin/charmc:" -i || \
		die "Failed to fix examples"
	find examples/ -name 'Makefile' | xargs sed \
		-r "s:./charmrun:./charmrun ++local:" -i || \
		die "Failed to fix examples"
	insinto /usr/share/doc/${PF}/examples
	doins -r examples/charm++/*

	# pdf/html docs
	if use doc; then
		cd "${S}"/doc
		# install pdfs
		insinto /usr/share/doc/${PF}/pdf
		doins  doc/pdf/* || die "failed to install pdf docs"
		# install html
		docinto html
		dohtml -r doc/html/* || die "failed to install html docs"
	fi
}

pkg_postinst() {
	echo
	einfo "Please test your charm installation by copying the"
	einfo "content of /usr/share/doc/${PF}/examples to a"
	einfo "temporary location and run 'make test'."
	echo
}