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

inherit eutils

DESCRIPTION=""
HOMEPAGE="http://ati.amd.com/technology/streamcomputing/"
BASE_URI="http://a248.e.akamai.net/f/674/9206/0/www2.ati.com/sdkdwnld"
SRC_URI="amd64? ( ${BASE_URI}/amdstream-${PV}-lnx64.tar.gzip ) 
         x86? ( ${BASE_URI}/amdstream-${PV}-lnx32.tar.gzip )"

LICENSE=""
SLOT="0"
KEYWORDS="~amd64 ~x86"
IUSE="+samples +doc vim-syntax"

DEPEND="
	=dev-libs/amd-stream-cal-1.3*
	"
RDEPEND=""

BROOKROOT="/usr/local/amdbrook"

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

	if use x86; then
		BIT_VERSION="i386"
	else
		BIT_VERSION="x86_64"
	fi
		
	einfo "Unpacking AMD-Brook"
	dd if=${WORKDIR}/amdstream-brook-${PV}.${BIT_VERSION}.run of=${WORKDIR}/amdbrook.tar.gz bs=1 skip=16384 >& /dev/null

	einfo "Extracting tar files"
	tar xvf amdbrook.tar.gz >& /dev/null
	
	einfo "Converting rpm to tar"
	rpm2tar amdstream-brook-${PV}-1.${BIT_VERSION}.rpm

	tar xvf ${WORKDIR}/amdstream-brook-${PV}-1.${BIT_VERSION}.tar >& /dev/null
	
	cd "${WORKDIR}/${BROOKROOT}"
	epatch "${FILESDIR}"/gcc-4.3-amdbrook-platform.patch  || die "epatch failed"

	if use samples; then
		cd "${WORKDIR}/${BROOKROOT}/samples"
		epatch "${FILESDIR}"/gcc-4.3-amdbrook-samples.patch  || die "epatch failed"
	fi
}

src_compile() {
	cd "${WORKDIR}/${BROOKROOT}/platform"
	emake -j1 RELEASE="true" CALROOT="/usr/local/amdcal" || die "make platform failed"

	#if use samples; then
	#	cd "${WORKDIR}/${BROOKROOT}/samples"
	#	emake || die "make samples failed"
	#fi
}

src_install() {
	dodir "${BROOKROOT}"
	
	if use doc; then
		dodoc "${WORKDIR}/${BROOKROOT}/Brook+_Documentation"/* \
				|| die "Doc copy failed"
	fi

	if use vim-syntax; then
		insinto /usr/share/vim/vimfiles/syntax
		doins "${WORKDIR}/${BROOKROOT}/utils/vim_syntaxfile/brook.vim" \
				|| die "Vim syntax file placement failed"
	fi

	insinto "/usr/include/brook/"
	doins "${WORKDIR}/${BROOKROOT}/sdk/include/brook"/*.h* \
				|| die "Headers copy failed"
	insinto "/usr/include/brook/CPU/"
	doins "${WORKDIR}/${BROOKROOT}/sdk/include/brook/CPU"/* \
				|| die "Headers copy failed"

	dobin "${WORKDIR}/${BROOKROOT}/sdk/bin"/* \
				|| die "Bin creation filed"
	dolib.so "${WORKDIR}/${BROOKROOT}/sdk/lib"/* \
				|| die "Lib creation filed"
	
	if use samples; then
		cp -r "${WORKDIR}/${BROOKROOT}/samples" "${D}/${BROOKROOT}" \
				|| die "Samples copy failed"
	fi
}

pkg_postinst() {
	ewarn ""
	ewarn "In order to be able to use Brook+, you may need to set:"
	ewarn "    export CALROOT=/usr/local/amdcal/"

	einfo "Instead, you don't need to set these variables any more:"
	einfo "    export LD_LIBRARY_PATH=\"/usr/local/amdbrook/sdk/lib:\$LD_LIBRARY_PATH\""
	einfo "and"
	einfo "    export PATH=\"/usr/local/amdbrook/sdk/bin:\$PATH\""
	einfo ""
}