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# Copyright 1999-2011 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/app-emulation/xen-pvgrub/xen-pvgrub-4.1.2.ebuild,v 1.2 2011/11/07 17:40:42 alexxy Exp $

EAPI="2"

inherit flag-o-matic eutils multilib toolchain-funcs

XEN_EXTFILES_URL="http://xenbits.xensource.com/xen-extfiles"
OCAML_URL=http://caml.inria.fr/pub/distrib
LIBPCI_URL=ftp://atrey.karlin.mff.cuni.cz/pub/linux/pci
GRUB_URL=http://alpha.gnu.org/gnu/grub
SRC_URI="
		http://bits.xensource.com/oss-xen/release/${PV}/xen-${PV}.tar.gz
		$GRUB_URL/grub-0.97.tar.gz
		$XEN_EXTFILES_URL/zlib-1.2.3.tar.gz
		$LIBPCI_URL/pciutils-2.2.9.tar.bz2
		$XEN_EXTFILES_URL/lwip-1.3.0.tar.gz
		$XEN_EXTFILES_URL/newlib/newlib-1.16.0.tar.gz
                $OCAML_URL/ocaml-3.11
		"

S="${WORKDIR}/xen-${PV}"

DESCRIPTION="allows to boot Xen domU kernels from a menu.lst laying inside guest filesystem"
HOMEPAGE="http://xen.org/"
LICENSE="GPL-2"
SLOT="0"
KEYWORDS="~amd64 ~x86"
IUSE="custom-cflags"

DEPEND="sys-devel/gettext
	sys-devel/gcc"

RDEPEND=">=app-emulation/xen-${PV}"

src_prepare() {
	# Drop .config
	sed -e '/-include $(XEN_ROOT)\/.config/d' -i Config.mk || die "Couldn't drop"
	# if the user *really* wants to use their own custom-cflags, let them
	if use custom-cflags; then
		einfo "User wants their own CFLAGS - removing defaults"
		# try and remove all the default custom-cflags
		find "${S}" -name Makefile -o -name Rules.mk -o -name Config.mk -exec sed \
			-e 's/CFLAGS\(.*\)=\(.*\)-O3\(.*\)/CFLAGS\1=\2\3/' \
			-e 's/CFLAGS\(.*\)=\(.*\)-march=i686\(.*\)/CFLAGS\1=\2\3/' \
			-e 's/CFLAGS\(.*\)=\(.*\)-fomit-frame-pointer\(.*\)/CFLAGS\1=\2\3/' \
			-e 's/CFLAGS\(.*\)=\(.*\)-g3*\s\(.*\)/CFLAGS\1=\2 \3/' \
			-e 's/CFLAGS\(.*\)=\(.*\)-O2\(.*\)/CFLAGS\1=\2\3/' \
			-i {} \;
	fi

	sed -i \
	-e 's/WGET=.*/WGET=cp -t . /' \
	-e "s;\$(XEN_EXTFILES_URL);${DISTDIR};" \
	-e 's/$(LD)/$(LD) LDFLAGS=/' \
	-e 's;install-grub: pv-grub;install-grub:;' \
	"${S}"/stubdom/Makefile || die
	# Fix gcc-4.6
	sed -i \
		-e "s:-Werror::g" \
		-i tools/libxc/Makefile \
		-i extras/mini-os/minios.mk || die

	#Prevent internal downloading
	cp $DISTDIR/zlib-1.2.3.tar.gz \
		$DISTDIR/pciutils-2.2.9.tar.bz2 \
		$DISTDIR/lwip-1.3.0.tar.gz \
		$DISTDIR/ocaml-3.11 \
		$DISTDIR/newlib-1.16.0.tar.gz \
		$DISTDIR/grub-0.97.tar.gz \
		./stubdom/ || die "files not coped to stubdom"

	einfo "files copied to stubdom"

        sed -e 's:^\t$(WGET) $(LWIP_URL):#\t$(WGET) $(LWIP_URL):' \
		-e 's:^\t$(WGET) $(NEWLIB_URL):#\t$(WGET) $(NEWLIB_URL):' \
		-e 's:^\t$(WGET) $(ZLIB_URL):#\t$(WGET) $(ZLIB_URL):' \
		-e 's:^\t$(WGET) $(LIBPCI_URL):#\t$(WGET) $(LIBPCI_URL):' \
		-e 's:^\t$(WGET) $(OCAML_URL):#\t$(WGET) $(OCAML_URL):' \
		-e 's:^\t$(WGET) $(GRUB_URL):#$(WGET) $(GRUB_URL):' \
                -i stubdom/Makefile || die "stubdom/Makefile could not be adjusted"
}

src_compile() {
	use custom-cflags || unset CFLAGS
	if test-flag-CC -fno-strict-overflow; then
		append-flags -fno-strict-overflow
	fi

	emake CC="$(tc-getCC)" LD="$(tc-getLD)" -C tools/include || die "prepare libelf headers failed"

	if use x86; then
		emake -j1 CC="$(tc-getCC)" LD="$(tc-getLD)" \
		XEN_TARGET_ARCH="x86_32" -C stubdom pv-grub || \
		die "compile pv-grub_x86_32 failed"
	fi
	if use amd64; then
		emake -j1 CC="$(tc-getCC)" LD="$(tc-getLD)" \
		XEN_TARGET_ARCH="x86_64" -C stubdom pv-grub || \
		die "compile pv-grub_x86_64 failed"
		if use multilib; then
			multilib_toolchain_setup x86
			emake -j1 \
			XEN_TARGET_ARCH="x86_32" -C stubdom pv-grub || \
			die "compile pv-grub_x86_32 failed"
		fi
	fi
}

src_install() {
	if use x86; then
		emake XEN_TARGET_ARCH="x86_32" DESTDIR="${D}" -C stubdom install-grub || die "install pv-grub_x86_32 failed"
	fi
	if use amd64; then
		emake XEN_TARGET_ARCH="x86_64" DESTDIR="${D}" -C stubdom install-grub || die "install pv-grub_x86_64 failed"
		if use multilib; then
			emake XEN_TARGET_ARCH="x86_32" DESTDIR="${D}" -C stubdom install-grub || die "install pv-grub_x86_32 failed"
		fi
	fi
}

pkg_postinst() {
	elog "Official Xen Guide and the unoffical wiki page:"
	elog " http://www.gentoo.org/doc/en/xen-guide.xml"
	elog " http://en.gentoo-wiki.com/wiki/Xen/"
}