# Copyright 1999-2007 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/sci-libs/acml/acml-3.1.0-r1.ebuild,v 1.4 2006/08/17 20:06:58 dberkholz Exp $

inherit eutils fortran

DESCRIPTION="The AMD Core Math Library (ACML) is a set of numerical routines tuned specifically for AMD64 platform processors (including Opteron and Athlon64 )."
HOMEPAGE="http://developer.amd.com/acml.jsp"

MY_PV=${PV//\./\-}
FORTRAN="gfortran g77 ifc"
fortran_pkg_setup >/dev/null

RESTRICT="fetch nostrip"
LICENSE="ACML"
KEYWORDS="~amd64 ~x86"
SLOT="0"
IUSE="$FORTRAN int64 openmp example"
RDEPEND="app-admin/eselect-blas
		app-admin/eselect-cblas
		app-admin/eselect-lapack"

# Configure variables for appropriate ACML build
if use gfortran || [[ ${FORTRANC} = "gfortran" ]] ; then
	need_fortran gfortran >/dev/null && FORT=gfortran 
elif use g77 || [[ ${FORTRANC} = "g77" ]] ; then
	need_fortran g77 >/dev/null && FORT=gnu
elif use ifc || [[ ${FORTRANC} = "ifc" ]] ; then
	need_fortran ifc >/dev/null && FORT=ifort
else
	:
fi

[[ ${ARCH} = "amd64" ]] && BITS=64
[[ ${ARCH} = "x86" ]] && BITS=32

use int64 && use gfortran && INT64="-int64"

# Specific for acml 3.6.1, remove it for other versions!!!
[[ ${PV} = 3.6.1 ]] && [[ $FORT != gfortran ]] && MY_PV=${MY_PV//1/0} 

SRC_URI="acml-${MY_PV}-${FORT}-${BITS}bit${INT64}.tgz"

pkg_nofetch() {
	einfo "Please download the ACML from:"
	einfo "${HOMEPAGE}"
	einfo "and place it in ${DISTDIR}"
	einfo "The previous version could be found at"
	einfo "http://developer.amd.com/acmlarchive.jsp"
}

S=${WORKDIR}
src_unpack() {
	ewarn "From version 3.5.0 on, ACML no longer supports"
	ewarn "hardware without SSE/SSE2 instructions. "
	ewarn "For older 32-bit hardware that does not support SSE/SSE2,"
	ewarn "you must continue to use an older version (ACML 3.1.0 and ealier)."
	epause

	unpack ${A}
	(DISTDIR="${S}" unpack contents-acml-${MY_PV}-${FORT}-${BITS}bit${INT64}.tgz)
}

src_compile() {
	return
}

src_install() {
	use int64 && use gfortran && INT64="_int64"
	use openmp && use gfortran && MP="_mp"
	
	DIR=${S}/${FORT}${BITS}${MP}${INT64}

	# Documentation
	cd ${S}/Doc
	dohtml html/*
	dodoc acml.txt
	doinfo acml.info*
	insinto /usr/share/doc/${PF}
	doins acml.pdf

	# Headers
	dodir /usr/include/acml
	insinto /usr/include/acml
	doins ${DIR}/include/*
	for FILE in `ls /usr/include/acml`;
		do dosym /usr/include/acml/${FILE} /usr/include/${FILE}
	done

	# Libraries
	dolib ${DIR}/lib/*

	# Examples
	if use example ; then
		insinto /usr/share/doc/${PF}/examples
		doins examples/*
	fi

	# eselect files
	eselect blas add $(get_libdir) ${FILESDIR}/eselect.blas acml
	eselect cblas add $(get_libdir) ${FILESDIR}/eselect.cblas acml
	eselect lapack add $(get_libdir) ${FILESDIR}/eselect.lapack acml
}

pkg_postinst() {
	if [[ -z "$(eselect blas show)" ]]; then
		eselect blas set acml
	fi
	if [[ -z "$(eselect cblas show)" ]]; then
		eselect cblas set acml
	fi
	if [[ -z "$(eselect lapack show)" ]]; then
		eselect lapack set acml
	fi

	elog "To use ACML's BLAS features, you have to issue (as root):"
	elog "\n\teselect blas set acml"
	elog "To use ACML's CBLAS features, you have to issue (as root):"
	elog "\n\teselect cblas set acml"
	elog "To use ACML's LAPACK features, you have to issue (as root):"
	elog "\n\teselect lapack set acml"
}