# Copyright 1999-2008 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $

inherit eutils

DESCRIPTION=""
HOMEPAGE="http://developer.amd.com/stream"
BASE_URI="http://download2-developer.amd.com/amd/GPU/executables"
SRC_URI="amd64? ( ${BASE_URI}/atistream-${PV}-lnx64.tar.gzip ) 
         x86? ( ${BASE_URI}/atistream-${PV}-lnx32.tar.gzip )"

LICENSE=""
SLOT="0"
KEYWORDS="~amd64 ~x86"
IUSE="+samples +doc +tools"

DEPEND=""
RDEPEND="
	>=x11-drivers/ati-drivers-8.561
	virtual/libstdc++
	"
CALROOT="/usr/local/atical"

src_unpack() {
	tar xf ${DISTDIR}/${A} -C ${WORKDIR}
	cd ${WORKDIR}

	if use x86; then
		BIT_VERSION="i386"
	else
		BIT_VERSION="x86_64"
	fi
		
	einfo "Unpacking AMD-Cal"
	dd if=${WORKDIR}/atistream-cal-${PV}.${BIT_VERSION}.run of=${WORKDIR}/atistream-cal.tar.gz bs=16384 skip=1 || die "unpacking failed"

	einfo "Extracting tar files"
	tar xzf atistream-cal.tar.gz || die "extracting failed"

	einfo "Converting rpm to tar"
	rpm2tar atistream-cal-${PV}-1.${BIT_VERSION}.rpm || die "converting failed"

	einfo "Extracting files"
	tar xf ${WORKDIR}/atistream-cal-${PV}-1.${BIT_VERSION}.tar || die "extracting failed"

	# let's patch them, for gcc >= 4.3
	cd "${WORKDIR}/${CALROOT}"
	epatch "${FILESDIR}/gcc-4.3-atical.patch"
}

src_install() {
	dodir "${CALROOT}"

	if use doc; then
		dodoc "${WORKDIR}/${CALROOT}/CAL_Documentation"/*.pdf \
				|| die "Doc copy failed"
		dohtml "${WORKDIR}/${CALROOT}/CAL_Documentation/html"/* \
				|| die "Html copy failed"
	fi
	
	insinto "/usr/include/atical/"
	doins "${WORKDIR}/${CALROOT}/include"/* \
				|| die "Include copy failed"
	
	insinto "${CALROOT}"
	dosym "/usr/include/atical" "${CALROOT}/include" \
				|| die "Symlink to includes failed"

	if use samples; then
		cp -r "${WORKDIR}/${CALROOT}/samples" "${D}/${CALROOT}" \
				|| die "Samples copy failed"
		fperms -R a-x "${CALROOT}/samples"
		fperms -R a+X "${CALROOT}/samples"
		cp "${WORKDIR}/${CALROOT}/Makefile.common" "${D}/${CALROOT}/" \
				|| die "Samples copy failed"
		fperms a-x "${CALROOT}/Makefile.common"
	fi

	if use tools; then
		cp -r "${WORKDIR}/${CALROOT}/tools" "${D}/${CALROOT}" \
				|| die "Tools copy failed"
		cp -r "${WORKDIR}/${CALROOT}/utilities" "${D}/${CALROOT}" \
				|| die "Utilities copy failed"
	fi
}

pkg_postinst() {
	ewarn ""
	ewarn "In order to be able to use CAL, you will need to set"
	ewarn "    export CALROOT=\"${CALROOT}\""
	ewarn ""
}