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# Copyright 1999-2011 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/sci-libs/cholmod/cholmod-1.7.3.ebuild,v 1.1 2011/02/23 19:53:33 bicatali Exp $

EAPI=2
inherit eutils autotools

MY_PN=CHOLMOD
PPV=1.7.0

DESCRIPTION="Sparse Cholesky factorization and update/downdate library"
HOMEPAGE="http://www.cise.ufl.edu/research/sparse/cholmod"
SRC_URI="http://www.cise.ufl.edu/research/sparse/${PN}/${MY_PN}-${PV}.tar.gz
	mirror://gentoo/${PN}-${PPV}-autotools.patch.bz2"

LICENSE="LGPL-2.1 GPL-2"
SLOT="0"
KEYWORDS="~alpha ~amd64 ~hppa ~ppc ~ppc64 ~sparc ~x86 ~amd64-linux ~x86-linux ~x86-macos"
IUSE="doc metis minimal static-libs +supernodal"

RDEPEND="supernodal? ( virtual/lapack )
	sci-libs/amd
	sci-libs/colamd
	metis? ( sci-libs/camd
			 sci-libs/ccolamd
			 || ( sci-libs/metis sci-libs/parmetis ) )"

DEPEND="${RDEPEND}
	supernodal? ( dev-util/pkgconfig )
	metis? ( dev-util/pkgconfig )"

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

src_prepare() {
	cd "${WORKDIR}"
	epatch "${WORKDIR}"/${PN}-${PPV}-autotools.patch
	cd "${S}"
	# We need to take care of cholmod.h here as well depending on
	# the USE flags, otherwise the installed file will reference
	# headers that we may not have included.
	if use minimal; then
		sed -i '/^#define CHOLMOD_/{N;
		s:\(#define\) \(CHOLMOD_CONFIG_H\)\n:\1 \2\n\1 NMODIFY 1\n\1 NMATRIXOPS 1\n:}' \
		Include/cholmod_config.h
	fi

	if ! use supernodal; then
		sed -i '/^#define CHOLMOD_/{N;
		s:\(#define\) \(CHOLMOD_CONFIG_H\)\n:\1 \2\n\1 NSUPERNODAL 1\n:}' \
		Include/cholmod_config.h
	fi

	if ! use metis; then
		sed -i '/^#define CHOLMOD_/{N;
		s:\(#define\) \(CHOLMOD_CONFIG_H\)\n:\1 \2\n\1 NPARTITION 1\n:}' \
		Include/cholmod_config.h
	fi
	eautoreconf
}

src_configure() {
	local lapack_libs=no
	local blas_libs=no
	if use supernodal; then
		blas_libs=$(pkg-config --libs blas)
		lapack_libs=$(pkg-config --libs lapack)
	fi
	econf \
		--with-blas="${blas_libs}" \
		--with-lapack="${lapack_libs}" \
		$(use_enable supernodal mod-supernodal) \
		$(use_enable !minimal mod-modify) \
		$(use_enable !minimal mod-matrixops) \
		$(use_enable metis mod-partition) \
		$(use_enable static-libs static)
}

src_test() {
	if ! use supernodal || ! use metis || use minimal; then
		ewarn "According to your useflags, some modules were not built on"
		ewarn "purpose. This can cause the tests included with Cholmod"
		ewarn "to fail. Rebuild with USE=\"supernodal metis -minimal\""
		ewarn "if you care."
	fi
	cd "${S}"/Demo
	emake test || die "emake test failed"
}

src_install() {
	emake DESTDIR="${D}" install || die "emake install failed"
	dodoc README.txt Doc/ChangeLog || die "dodoc failed"
	if use doc; then
		dodoc Doc/UserGuide.pdf || die "pdf install failed"
	fi
}