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

inherit autotools eutils fortran-2 multilib toolchain-funcs

MyPN="${PN/-reference/}"

DESCRIPTION="C wrapper interface to the F77 reference BLAS implementation"
HOMEPAGE="http://www.netlib.org/blas/"
SRC_URI="http://www.netlib.org/blas/blast-forum/${MyPN}.tgz"

SLOT="0"
LICENSE="public-domain"
IUSE=""
KEYWORDS="alpha amd64 hppa ppc ppc64 s390 sparc x86 ~x86-fbsd"

RDEPEND="
	virtual/blas
	app-eselect/eselect-cblas"
DEPEND="${RDEPEND}
	virtual/pkgconfig"

ESELECT_PROF=reference
S="${WORKDIR}/CBLAS"

src_unpack() {
	unpack ${A}
	cd "${S}"
	epatch "${FILESDIR}"/${P}-autotool.patch
	eautoreconf
}

src_compile() {
	econf \
		--libdir=/usr/$(get_libdir)/blas/reference \
		--with-blas="$($(tc-getPKG_CONFIG) --libs blas)"
	emake || die "emake failed"
}

src_install() {
	emake DESTDIR="${D}" install || die "emake install failed"
	dodoc README || die "failed to install docs"
	insinto /usr/share/doc/${PF}
	doins cblas_example*c || die "install examples failed"
	eselect cblas add $(get_libdir) "${FILESDIR}"/eselect.cblas.reference ${ESELECT_PROF}
}

pkg_postinst() {
	local p=cblas
	local current_lib=$(eselect ${p} show | cut -d' ' -f2)
	if [[ ${current_lib} == ${ESELECT_PROF} || -z ${current_lib} ]]; then
		# work around eselect bug #189942
		local configfile="${ROOT}"/etc/env.d/${p}/$(get_libdir)/config
		[[ -e ${configfile} ]] && rm -f ${configfile}
		eselect ${p} set ${ESELECT_PROF}
		elog "${p} has been eselected to ${ESELECT_PROF}"
	else
		elog "Current eselected ${p} is ${current_lib}"
		elog "To use ${p} ${ESELECT_PROF} implementation, you have to issue (as root):"
		elog "\t eselect ${p} set ${ESELECT_PROF}"
	fi
}