Gentoo Packages

# Copyright 1999-2020 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI=7

inherit toolchain-funcs

DESCRIPTION="Portable Implementation of the Linpack Benchmark for Distributed-Memory Clusters"
HOMEPAGE="http://www.netlib.org/benchmark/hpl/"
SRC_URI="http://www.netlib.org/benchmark/hpl/hpl-${PV}.tar.gz"

SLOT="0"
LICENSE="HPL"
KEYWORDS="~amd64 ~x86"
IUSE="doc"

BDEPEND="virtual/pkgconfig"
RDEPEND="
	virtual/blas
	virtual/lapack
	virtual/mpi"
DEPEND="${RDEPEND}"

src_prepare() {
	local a=""
	local locallib="${EPREFIX}/usr/$(get_libdir)/lib"
	local localblas="$(for i in $($(tc-getPKG_CONFIG) --libs-only-l blas lapack);do a="${a} ${i/-l/${locallib}}.so "; done; echo ${a})"

	cp setup/Make.Linux_PII_FBLAS Make.gentoo_hpl_fblas_x86 || die
	sed -i \
		-e "/^TOPdir/s,= .*,= ${S}," \
		-e '/^HPL_OPTS\>/s,=,= -DHPL_DETAILED_TIMING -DHPL_COPY_L,' \
		-e '/^ARCH\>/s,= .*,= gentoo_hpl_fblas_x86,' \
		-e '/^MPdir\>/s,= .*,=,' \
		-e '/^MPlib\>/s,= .*,=,' \
		-e "/^LAlib\>/s,= .*,= ${localblas}," \
		-e '/^LINKER\>/s,= .*,= mpicc,' \
		-e '/^CC\>/s,= .*,= mpicc,' \
		-e '/^CCFLAGS\>/s|= .*|= $(HPL_DEFS) ${CFLAGS}|' \
		-e "/^LINKFLAGS\>/s|= .*|= ${LDFLAGS}|" \
		-e "/^ARCHIVER\>/s|= .*|= $(tc-getAR)|" \
		Make.gentoo_hpl_fblas_x86 || die

	default
}

src_compile() {
	# parallel make failure bug #321539
	HOME="${WORKDIR}" emake -j1 arch=gentoo_hpl_fblas_x86
}

src_install() {
	dobin bin/gentoo_hpl_fblas_x86/xhpl
	dolib.a lib/gentoo_hpl_fblas_x86/libhpl.a

	dodoc INSTALL BUGS COPYRIGHT HISTORY README TUNING \
		bin/gentoo_hpl_fblas_x86/HPL.dat
	doman man/man3/*.3

	if use doc; then
		docinto html
		dodoc -r www/*
	fi
}

pkg_postinst() {
	einfo "Remember to copy ${EROOT}/usr/share/hpl/HPL.dat to your working directory"
	einfo "before running xhpl.  Typically one may run hpl by executing:"
	einfo "\"mpiexec -np 4 ${EROOT}/usr/bin/xhpl\""
	einfo "where -np specifies the number of processes."
}