sys-devel/gcc/gcc-9999.ebuild - mirrors/cros/chromiumos/overlays/chromiumos-overlay - Git at Google

 # Copyright 1999-2014 Gentoo Foundation
 # Distributed under the terms of the GNU General Public License v2
 # $Header: /var/cvsroot/gentoo-x86/sys-devel/gcc/gcc-4.4.3-r3.ebuild,v 1.1 2010/06/19 01:53:09 zorry Exp $

 EAPI="7"
 CROS_WORKON_REPO="https://android.googlesource.com"
 CROS_WORKON_PROJECT="toolchain/gcc"
 CROS_WORKON_LOCALNAME=../aosp/toolchain/gcc
 NEXT_GCC="origin/svn-mirror/google/gcc-4_9"
 NEXT_GCC_REPO="https://chromium.googlesource.com/chromiumos/third_party/gcc.git"

 # By default, PREV_GCC points to the parent of current tip of origin/master.
 # If that is a bad commit, override this to point to the last known good commit.
 PREV_GCC="origin/master^"

 inherit eutils cros-workon binutils-funcs

 GCC_FILESDIR="${PORTDIR}/sys-devel/gcc/files"

 DESCRIPTION="The GNU Compiler Collection.  Includes C/C++, java compilers, pie+ssp extensions, Haj Ten Brugge runtime bounds checking. This Compiler is based off of Crosstoolv14."

 LICENSE="GPL-3 LGPL-3 libgcc FDL-1.2"
 KEYWORDS="~*"

 RDEPEND=">=sys-libs/zlib-1.1.4
 	>=sys-devel/gcc-config-1.6
 	virtual/libiconv
 	>=dev-libs/gmp-4.3.2
 	>=dev-libs/mpc-0.8.1
 	>=dev-libs/mpfr-2.4.2
 	graphite? (
 		>=dev-libs/cloog-0.18.0
 		>=dev-libs/isl-0.11.1
 	)"
 DEPEND="${RDEPEND}
 	test? (
 		>=dev-util/dejagnu-1.4.4
 		>=sys-devel/autogen-5.5.4
 	)
 	>=sys-apps/texinfo-4.8
 	>=sys-devel/bison-1.875"
 PDEPEND=">=sys-devel/gcc-config-1.7"
 BDEPEND="${CATEGORY}/binutils"

 RESTRICT="mirror strip"

 IUSE="gcc_repo gcj git_gcc go graphite gtk hardened hardfp llvm-next llvm-tot mounted_gcc multilib
 	nls cxx openmp test tests +thumb upstream_gcc vanilla vtable_verify +wrapper_ccache
 	next_gcc prev_gcc"
 REQUIRED_USE="next_gcc? ( !prev_gcc )"

 is_crosscompile() { [[ ${CHOST} != ${CTARGET} ]] ; }

 export CTARGET=${CTARGET:-${CHOST}}
 if [[ ${CTARGET} = ${CHOST} ]] ; then
 	if [[ ${CATEGORY/cross-} != ${CATEGORY} ]] ; then
 		export CTARGET=${CATEGORY/cross-}
 	fi
 fi

 SLOT="${CTARGET}"

 PREFIX=/usr

 update_location_for_aosp() {
 	# For aosp gcc repository, the actual gcc directory is 1 more
 	# level down, eg. gcc/gcc-4.9, pick up the newest one in this
 	# case.
 	local gccsub=$(find "${S}" -maxdepth 1 -type d -name "gcc-*" | sort -r | head -1)
 	if [[ -d "${gccsub}" ]] && [[ -d "${gccsub}/gcc/config/arm/" ]]; then
 		S="${gccsub}"
 	fi
 	cd "${S}"
 }

 cros_pre_src_prepare_use_gcc() {
 	cros_use_gcc
 }

 src_unpack() {
 	if use mounted_gcc ; then
 		if [[ ! -d "$(get_gcc_dir)" ]] ; then
 			die "gcc dir not mounted/present at: $(get_gcc_dir)"
 		fi
 		S=$(get_gcc_dir)
 	elif use upstream_gcc ; then
 		GCC_MIRROR=ftp://mirrors.kernel.org/gnu/gcc
 		GCC_TARBALL=${GCC_MIRROR}/${P}/${P}.tar.bz2
 		wget $GCC_TARBALL
 		tar xf ${GCC_TARBALL##*/}
 	elif use git_gcc || use next_gcc || use prev_gcc ; then
 		aosp_git="${CROS_WORKON_REPO}/${CROS_WORKON_PROJECT}.git"
 		if use gcc_repo ; then
 			gcc_repository="${GCC_REPO}"
 		elif use next_gcc ; then
 			gcc_repository="${NEXT_GCC_REPO}"
 		else
 			gcc_repository="${aosp_git}"
 		fi
 		git clone --depth 1 --no-single-branch "${gcc_repository}" "${S}"
 		if use next_gcc ; then
 			GCC_GITHASH="${NEXT_GCC}"
 		fi
 		if use prev_gcc ; then
 			GCC_GITHASH="${PREV_GCC}"
 		fi
 		if [[ -n ${GCC_GITHASH} ]] ; then
 			einfo "Checking out: ${GCC_GITHASH}"
 			pushd "$(get_gcc_dir)" >/dev/null
 			git checkout ${GCC_GITHASH} || \
 				die "Couldn't checkout ${GCC_GITHASH}"
 			popd >/dev/null
 		fi
 		if [[ ${gcc_repository} == "${aosp_git}" ]] ; then
 			update_location_for_aosp
 		fi
 	else
 		cros-workon_src_unpack
 		update_location_for_aosp
 		[[ ${ABI} == "x32" ]] && eapply "${FILESDIR}"/90_all_gcc-4.7-x32.patch
 	fi

 	COST_PKG_VERSION="$("${FILESDIR}"/chromeos-version.sh "${S}")_cos_gg"
 	if [[ -d ${S}/.git ]]; then
 		COST_PKG_VERSION+="_$(cd ${S}; git describe --always)"
 	elif [[ -n ${VCSID} ]]; then
 		COST_PKG_VERSION+="_${VCSID}"
 	fi
 	COST_PKG_VERSION+="_${PVR}"
 }

 src_configure() {
 	if use mounted_gcc && [[ -f $(get_gcc_build_dir)/Makefile ]]; then
 		ewarn "Skipping configure due to existing build output"
 		return
 	fi

 	# GCC builds do not like LD being set, it will find correct LD to use.
 	unset LD BUILD_LD

 	local gcc_langs="c"
 	use cxx && gcc_langs+=",c++"
 	use go && gcc_langs+=",go"

 	# Set configuration based on path variables
 	local DATAPATH=$(get_data_dir)
 	local confgcc=(
 		--prefix=${PREFIX}
 		--bindir=$(get_bin_dir)
 		--datadir=${DATAPATH}
 		--includedir=$(get_lib_dir)/include
 		--with-gxx-include-dir=$(get_stdcxx_incdir)
 		--mandir=${DATAPATH}/man
 		--infodir=${DATAPATH}/info
 		--with-python-dir=${DATAPATH#${PREFIX}}/python

 		--build=${CBUILD}
 		--host=${CHOST}
 		--target=${CTARGET}
 		--enable-languages=${gcc_langs}
 		--enable-__cxa_atexit
 		--disable-canonical-system-headers
 		--enable-checking=release
 		--enable-linker-build-id

 		--with-bugurl='http://code.google.com/p/chromium-os/issues/entry'
 		--with-pkgversion="${COST_PKG_VERSION}"

 		$(use_enable go libatomic)
 		$(use_enable multilib)
 		$(use_enable openmp libgomp)

 		# Disable libs we don't care about.
 		--disable-libcilkrts
 		--disable-libitm
 		--disable-libmudflap
 		--disable-libquadmath
 		--disable-libssp
 		--disable-libsanitizer

 		# Enable frame pointer by default for all the boards.
 		# originally only enabled for i686 for chromium-os:23321.
 		--enable-frame-pointer
 	)

 	if use vtable_verify; then
 		confgcc+=(
 			--enable-cxx-flags=-Wl,-L../libsupc++/.libs
 			--enable-vtable-verify
 		)
 	fi

 	# Handle target-specific options.
 	case ${CTARGET} in
 	arm*)	#264534
 		local arm_arch="${CTARGET%%-*}"
 		# Only do this if arm_arch is armv*
 		if [[ ${arm_arch} == armv* ]]; then
 			# Convert armv7{a,r,m} to armv7-{a,r,m}
 			[[ ${arm_arch} == armv7? ]] && arm_arch=${arm_arch/7/7-}
 			# Remove endian ('l' / 'eb')
 			[[ ${arm_arch} == *l ]] && arm_arch=${arm_arch%l}
 			[[ ${arm_arch} == *eb ]] && arm_arch=${arm_arch%eb}
 			confgcc+=(
 				--with-arch=${arm_arch}
 				--disable-esp
 			)
 		fi
 		use hardfp && confgcc+=( --with-float=hard )
 		use thumb && confgcc+=( --with-mode=thumb )
 		;;
 	i?86*)
 		# Hardened is enabled for x86, but disabled for ARM.
 		confgcc+=(
 			--enable-esp
 			--with-arch=atom
 			--with-tune=atom
 		)
 		;;
 	x86_64*-gnux32)
 		confgcc+=( --with-abi=x32 --with-multilib-list=mx32 )
 		;;
 	esac

 	if is_crosscompile; then
 		confgcc+=( --enable-poison-system-directories )

 		local needed_libc="glibc"
 		if [[ -n ${needed_libc} ]]; then
 			if ! has_version ${CATEGORY}/${needed_libc}; then
 				confgcc+=( --disable-shared --disable-threads --without-headers )
 			elif has_version "${CATEGORY}/${needed_libc}[crosscompile_opts_headers-only]"; then
 				confgcc+=( --disable-shared --with-sysroot=/usr/${CTARGET} )
 			else
 				confgcc+=( --with-sysroot=/usr/${CTARGET} )
 			fi
 		fi
 	else
 		confgcc+=( --enable-shared --enable-threads=posix )
 	fi

 	# Finally add the user options (if any).
 	confgcc+=( ${EXTRA_ECONF} )

 	# Build in a separate build tree
 	mkdir -p $(get_gcc_build_dir) || die
 	cd $(get_gcc_build_dir) || die

 	# and now to do the actual configuration
 	addwrite /dev/zero
 	echo "Running this:"
 	echo "$(get_gcc_dir)"/configure "${confgcc[@]}"
 	"$(get_gcc_dir)"/configure "${confgcc[@]}" || die
 }

 src_compile() {
 	cd "$(get_gcc_build_dir)"
 	GCC_CFLAGS="$(portageq envvar CFLAGS)"
 	TARGET_FLAGS=""
 	TARGET_GO_FLAGS=""

 	if use hardened ; then
 		TARGET_FLAGS="${TARGET_FLAGS} -fstack-protector-strong -D_FORTIFY_SOURCE=2"
 	fi

 	EXTRA_CFLAGS_FOR_TARGET="${TARGET_FLAGS} ${CFLAGS_FOR_TARGET}"
 	EXTRA_CXXFLAGS_FOR_TARGET="${TARGET_FLAGS} ${CXXFLAGS_FOR_TARGET}"

 	if use vtable_verify ; then
 		EXTRA_CXXFLAGS_FOR_TARGET+=" -fvtable-verify=std"
 	fi

 	# libgo on arm must be compiled with -marm. Go's panic/recover functionality
 	# is broken in thumb mode.
 	if [[ ${CTARGET} == arm* ]]; then
 		TARGET_GO_FLAGS="${TARGET_GO_FLAGS} -marm"
 	fi
 	EXTRA_GOCFLAGS_FOR_TARGET="${TARGET_GO_FLAGS} ${GOCFLAGS_FOR_TARGET}"

 	# Do not link libgcc with gold. That is known to fail on internal linker
 	# errors. See crosbug.com/16719
 	local LD_NON_GOLD="$(get_binutils_path_ld ${CTARGET})/ld"

 	emake CFLAGS="${GCC_CFLAGS}" \
 		LDFLAGS="-Wl,-O1" \
 		STAGE1_CFLAGS="-O2 -pipe" \
 		BOOT_CFLAGS="-O2" \
 		CFLAGS_FOR_TARGET="$(get_make_var CFLAGS_FOR_TARGET) ${EXTRA_CFLAGS_FOR_TARGET}" \
 		CXXFLAGS_FOR_TARGET="$(get_make_var CXXFLAGS_FOR_TARGET) ${EXTRA_CXXFLAGS_FOR_TARGET}" \
 		GOCFLAGS_FOR_TARGET="$(get_make_var GOCFLAGS_FOR_TARGET) ${EXTRA_GOCFLAGS_FOR_TARGET}" \
 		LD_FOR_TARGET="${LD_NON_GOLD}" \
 		all
 }

 # Logic copied from Gentoo's toolchain.eclass.
 toolchain_src_install() {
 	BINPATH=$(get_bin_dir) # cros to Gentoo glue

 	# These should be symlinks
 	dodir /usr/bin
 	cd "${D}"${BINPATH}
 	for x in cpp gcc g++ c++ gcov g77 gcj gcjh gfortran gccgo ; do
 		# For some reason, g77 gets made instead of ${CTARGET}-g77...
 		# this should take care of that
 		[[ -f ${x} ]] && mv ${x} ${CTARGET}-${x}

 		if [[ -f ${CTARGET}-${x} ]] ; then
 			if ! is_crosscompile ; then
 				ln -sf ${CTARGET}-${x} ${x}
 				dosym ${BINPATH}/${CTARGET}-${x} \
 					/usr/bin/${x}-${GCC_CONFIG_VER}
 			fi

 			# Create version-ed symlinks
 			dosym ${BINPATH}/${CTARGET}-${x} \
 				/usr/bin/${CTARGET}-${x}-${GCC_CONFIG_VER}
 		fi

 		if [[ -f ${CTARGET}-${x}-${GCC_CONFIG_VER} ]] ; then
 			rm -f ${CTARGET}-${x}-${GCC_CONFIG_VER}
 			ln -sf ${CTARGET}-${x} ${CTARGET}-${x}-${GCC_CONFIG_VER}
 		fi
 	done
 }

 src_install() {
 	cd "$(get_gcc_build_dir)"
 	emake DESTDIR="${D}" install

 	find "${D}" -name libiberty.a -exec rm -f "{}" \;

 	# Move the libraries to the proper location
 	gcc_movelibs

 	# Move pretty-printers to gdb datadir to shut ldconfig up
 	gcc_move_pretty_printers

 	GCC_CONFIG_VER=$(get_gcc_base_ver)
 	dodir /etc/env.d/gcc
 	insinto /etc/env.d/gcc

 	local LDPATH=$(get_lib_dir)
 	for SUBDIR in 32 64 ; do
 		if [[ -d ${D}/${LDPATH}/${SUBDIR} ]]
 		then
 			LDPATH="${LDPATH}:${LDPATH}/${SUBDIR}"
 		fi
 	done

 	cat <<-EOF > env.d
 LDPATH="${LDPATH}"
 MANPATH="$(get_data_dir)/man"
 INFOPATH="$(get_data_dir)/info"
 STDCXX_INCDIR="$(get_stdcxx_incdir)"
 CTARGET=${CTARGET}
 GCC_PATH="$(get_bin_dir)"
 GCC_VER="$(get_gcc_base_ver)"
 EOF
 	newins env.d $(get_gcc_config_file)
 	cd -

 	toolchain_src_install

 	cd "${D}$(get_bin_dir)"

 	local use_llvm_next=false
 	if use llvm-next || use llvm-tot
 	then
 		use_llvm_next=true
 	fi

 	if is_crosscompile ; then
 		local sysroot_wrapper_file_prefix
 		local sysroot_wrapper_config
 		if use hardened
 		then
 			sysroot_wrapper_file_prefix=sysroot_wrapper.hardened
 			sysroot_wrapper_config=cros.hardened
 		else
 			sysroot_wrapper_file_prefix=sysroot_wrapper
 			sysroot_wrapper_config=cros.nonhardened
 		fi

 		exeinto "$(get_bin_dir)"
 		cat "${FILESDIR}/bisect_driver.py" > \
 			"${D}$(get_bin_dir)/bisect_driver.py" || die

 		# Note: We are always producing both versions, with and without ccache,
 		# so we can replace the behavior of the wrapper without rebuilding it.
 		# Used e.g. in chromite/scripts/cros_setup_toolchains.py to disable the
 		# ccache for simplechrome toolchains.
 		local ccache_suffixes=(noccache ccache)
 		local ccache_option_values=(false true)
 		for ccache_index in {0,1}; do
 			local ccache_suffix="${ccache_suffixes[${ccache_index}]}"
 			local ccache_option="${ccache_option_values[${ccache_index}]}"
 			# Build new golang wrapper
 			"${FILESDIR}/compiler_wrapper/build.py" --config="${sysroot_wrapper_config}" \
 				--use_ccache="${ccache_option}" \
 				--use_llvm_next="${use_llvm_next}" \
 				--output_file="${D}$(get_bin_dir)/${sysroot_wrapper_file_prefix}.${ccache_suffix}" || die
 		done

 		local use_ccache_index
 		use_ccache_index="$(usex wrapper_ccache 1 0)"
 		local sysroot_wrapper_file="${sysroot_wrapper_file_prefix}.${ccache_suffixes[${use_ccache_index}]}"

 		for x in c++ g++ gcc; do
 			if [[ -f "${CTARGET}-${x}" ]]; then
 				mv "${CTARGET}-${x}" "${CTARGET}-${x}.real"
 				dosym "${sysroot_wrapper_file}" "$(get_bin_dir)/${CTARGET}-${x}" || die
 			fi
 		done
 		for x in clang clang++; do
 			dosym "${sysroot_wrapper_file}" "$(get_bin_dir)/${CTARGET}-${x}" || die
 		done
 		if use go; then
 			local wrapper="sysroot_wrapper.gccgo"
 			doexe "${FILESDIR}/${wrapper}" || die
 			mv "${CTARGET}-gccgo" "${CTARGET}-gccgo.real" || die
 			dosym "${wrapper}" "$(get_bin_dir)/${CTARGET}-gccgo" || die
 		fi
 	else
 		local sysroot_wrapper_file=host_wrapper

 		exeinto "$(get_bin_dir)"

 		"${FILESDIR}/compiler_wrapper/build.py" --config=cros.host --use_ccache=false \
 			--use_llvm_next="${use_llvm_next}" \
 			--output_file="${D}$(get_bin_dir)/${sysroot_wrapper_file}" || die

 		for x in c++ g++ gcc; do
 			if [[ -f "${CTARGET}-${x}" ]]; then
 				mv "${CTARGET}-${x}" "${CTARGET}-${x}.real"
 				dosym "${sysroot_wrapper_file}" "$(get_bin_dir)/${CTARGET}-${x}" || die
 			fi
 			if [[ -f "${x}" ]]; then
 				ln "${CTARGET}-${x}.real" "${x}.real" || die
 				rm "${x}" || die
 				dosym "${sysroot_wrapper_file}" "$(get_bin_dir)/${x}" || die
 				# Add a cc.real symlink that points to gcc.real, https://crbug.com/1090449
 				if [[ "${x}" == "gcc" ]]; then
 					dosym "${x}.real" "$(get_bin_dir)/cc.real"
 				fi
 			fi
 		done
 	fi

 	if use tests
 	then
 		TEST_INSTALL_DIR="usr/local/dejagnu/gcc"
 		dodir ${TEST_INSTALL_DIR}
 		cd ${D}/${TEST_INSTALL_DIR}
 		tar -czf "tests.tar.gz" ${WORKDIR}
 	fi
 }

 pkg_postinst() {
 	gcc-config $(get_gcc_config_file)
 }

 pkg_postrm() {
 	if is_crosscompile ; then
 		if [[ -z $(ls "${ROOT}"/etc/env.d/gcc/${CTARGET}* 2>/dev/null) ]] ; then
 			rm -f "${ROOT}"/etc/env.d/gcc/config-${CTARGET}
 			rm -f "${ROOT}"/etc/env.d/??gcc-${CTARGET}
 			rm -f "${ROOT}"/usr/bin/${CTARGET}-{gcc,{g,c}++}{,32,64}
 		fi
 	fi
 }

 get_gcc_dir() {
 	local GCCDIR
 	if use mounted_gcc ; then
 		GCCDIR=${GCC_SOURCE_PATH:=/usr/local/toolchain_root/gcc}
 	elif use upstream_gcc ; then
 		GCCDIR=${P}
 	else
 		GCCDIR=${S}
 	fi
 	echo "${GCCDIR}"
 }

 get_gcc_build_dir() {
 	echo "$(get_gcc_dir)-build-${CTARGET}"
 }

 get_gcc_base_ver() {
 	cat "$(get_gcc_dir)/gcc/BASE-VER"
 }

 get_stdcxx_incdir() {
 	echo "$(get_lib_dir)/include/g++-v4"
 }

 get_lib_dir() {
 	echo "${PREFIX}/lib/gcc/${CTARGET}/$(get_gcc_base_ver)"
 }

 get_bin_dir() {
 	if is_crosscompile ; then
 		echo ${PREFIX}/${CHOST}/${CTARGET}/gcc-bin/$(get_gcc_base_ver)
 	else
 		echo ${PREFIX}/${CTARGET}/gcc-bin/$(get_gcc_base_ver)
 	fi
 }

 get_data_dir() {
 	echo "${PREFIX}/share/gcc-data/${CTARGET}/$(get_gcc_base_ver)"
 }

 get_gcc_config_file() {
 	echo ${CTARGET}-${PV}
 }

 # Grab a variable from the build system (taken from linux-info.eclass)
 get_make_var() {
 	local var=$1 makefile=${2:-$(get_gcc_build_dir)/Makefile}
 	echo -e "e:\\n\\t@echo \$(${var})\\ninclude ${makefile}" | \
 		r=${makefile%/*} emake --no-print-directory -s -f - 2>/dev/null
 }
 XGCC() { get_make_var GCC_FOR_TARGET ; }

 gcc_move_pretty_printers() {
 	LIBPATH=$(get_lib_dir)  # cros to Gentoo glue

 	local py gdbdir=/usr/share/gdb/auto-load${LIBPATH}
 	pushd "${D}"${LIBPATH} >/dev/null
 	for py in $(find . -name '*-gdb.py') ; do
 		local multidir=${py%/*}
 		insinto "${gdbdir}/${multidir}"
 		sed -i "/^libdir =/s:=.*:= '${LIBPATH}/${multidir}':" "${py}" || die #348128
 		doins "${py}" || die
 		rm "${py}" || die
 	done
 	popd >/dev/null
 }

 # make sure the libtool archives have libdir set to where they actually
 # -are-, and not where they -used- to be.  also, any dependencies we have
 # on our own .la files need to be updated.
 fix_libtool_libdir_paths() {
 	pushd "${D}" >/dev/null

 	pushd "./${1}" >/dev/null
 	local dir="${PWD#${D%/}}"
 	local allarchives=$(echo *.la)
 	allarchives="\(${allarchives// /\\|}\)"
 	popd >/dev/null

 	sed -i \
 		-e "/^libdir=/s:=.*:='${dir}':" \
 		./${dir}/*.la
 	sed -i \
 		-e "/^dependency_libs=/s:/[^ ]*/${allarchives}:${LIBPATH}/\1:g" \
 		$(find ./${PREFIX}/lib* -maxdepth 3 -name '*.la') \
 		./${dir}/*.la

 	popd >/dev/null
 }

 gcc_movelibs() {
 	LIBPATH=$(get_lib_dir)	# cros to Gentoo glue

 	local multiarg removedirs=""
 	for multiarg in $($(XGCC) -print-multi-lib) ; do
 		multiarg=${multiarg#*;}
 		multiarg=${multiarg//@/ -}

 		local OS_MULTIDIR=$($(XGCC) ${multiarg} --print-multi-os-directory)
 		local MULTIDIR=$($(XGCC) ${multiarg} --print-multi-directory)
 		local TODIR=${D}${LIBPATH}/${MULTIDIR}
 		local FROMDIR=

 		[[ -d ${TODIR} ]] || mkdir -p ${TODIR}

 		for FROMDIR in \
 			${LIBPATH}/${OS_MULTIDIR} \
 			${LIBPATH}/../${MULTIDIR} \
 			${PREFIX}/lib/${OS_MULTIDIR} \
 			${PREFIX}/${CTARGET}/lib/${OS_MULTIDIR}
 		do
 			removedirs="${removedirs} ${FROMDIR}"
 			FROMDIR=${D}${FROMDIR}
 			if [[ ${FROMDIR} != "${TODIR}" && -d ${FROMDIR} ]] ; then
 				local files=$(find "${FROMDIR}" -maxdepth 1 ! -type d 2>/dev/null)
 				if [[ -n ${files} ]] ; then
 					mv ${files} "${TODIR}"
 				fi
 			fi
 		done
 		fix_libtool_libdir_paths "${LIBPATH}/${MULTIDIR}"
 	done

 	# We remove directories separately to avoid this case:
 	#	mv SRC/lib/../lib/*.o DEST
 	#	rmdir SRC/lib/../lib/
 	#	mv SRC/lib/../lib32/*.o DEST  # Bork
 	for FROMDIR in ${removedirs} ; do
 		rmdir "${D}"${FROMDIR} >& /dev/null
 	done
 	find "${D}" -type d | xargs rmdir >& /dev/null
 }

 # If you need to force a cros_workon uprev, change this number (you can use next
 # uprev): 271
	# Copyright 1999-2014 Gentoo Foundation
	# Distributed under the terms of the GNU General Public License v2
	# $Header: /var/cvsroot/gentoo-x86/sys-devel/gcc/gcc-4.4.3-r3.ebuild,v 1.1 2010/06/19 01:53:09 zorry Exp $

	EAPI="7"
	CROS_WORKON_REPO="https://android.googlesource.com"
	CROS_WORKON_PROJECT="toolchain/gcc"
	CROS_WORKON_LOCALNAME=../aosp/toolchain/gcc
	NEXT_GCC="origin/svn-mirror/google/gcc-4_9"
	NEXT_GCC_REPO="https://chromium.googlesource.com/chromiumos/third_party/gcc.git"

	# By default, PREV_GCC points to the parent of current tip of origin/master.
	# If that is a bad commit, override this to point to the last known good commit.
	PREV_GCC="origin/master^"

	inherit eutils cros-workon binutils-funcs

	GCC_FILESDIR="${PORTDIR}/sys-devel/gcc/files"

	DESCRIPTION="The GNU Compiler Collection. Includes C/C++, java compilers, pie+ssp extensions, Haj Ten Brugge runtime bounds checking. This Compiler is based off of Crosstoolv14."

	LICENSE="GPL-3 LGPL-3 libgcc FDL-1.2"
	KEYWORDS="~*"

	RDEPEND=">=sys-libs/zlib-1.1.4
	>=sys-devel/gcc-config-1.6
	virtual/libiconv
	>=dev-libs/gmp-4.3.2
	>=dev-libs/mpc-0.8.1
	>=dev-libs/mpfr-2.4.2
	graphite? (
	>=dev-libs/cloog-0.18.0
	>=dev-libs/isl-0.11.1
	)"
	DEPEND="${RDEPEND}
	test? (
	>=dev-util/dejagnu-1.4.4
	>=sys-devel/autogen-5.5.4
	)
	>=sys-apps/texinfo-4.8
	>=sys-devel/bison-1.875"
	PDEPEND=">=sys-devel/gcc-config-1.7"
	BDEPEND="${CATEGORY}/binutils"

	RESTRICT="mirror strip"

	IUSE="gcc_repo gcj git_gcc go graphite gtk hardened hardfp llvm-next llvm-tot mounted_gcc multilib
	nls cxx openmp test tests +thumb upstream_gcc vanilla vtable_verify +wrapper_ccache
	next_gcc prev_gcc"
	REQUIRED_USE="next_gcc? ( !prev_gcc )"

	is_crosscompile() { [[ ${CHOST} != ${CTARGET} ]] ; }

	export CTARGET=${CTARGET:-${CHOST}}
	if [[ ${CTARGET} = ${CHOST} ]] ; then
	if [[ ${CATEGORY/cross-} != ${CATEGORY} ]] ; then
	export CTARGET=${CATEGORY/cross-}
	fi
	fi

	SLOT="${CTARGET}"

	PREFIX=/usr

	update_location_for_aosp() {
	# For aosp gcc repository, the actual gcc directory is 1 more
	# level down, eg. gcc/gcc-4.9, pick up the newest one in this
	# case.
	local gccsub=$(find "${S}" -maxdepth 1 -type d -name "gcc-*" \| sort -r \| head -1)
	if [[ -d "${gccsub}" ]] && [[ -d "${gccsub}/gcc/config/arm/" ]]; then
	S="${gccsub}"
	fi
	cd "${S}"
	}

	cros_pre_src_prepare_use_gcc() {
	cros_use_gcc
	}

	src_unpack() {
	if use mounted_gcc ; then
	if [[ ! -d "$(get_gcc_dir)" ]] ; then
	die "gcc dir not mounted/present at: $(get_gcc_dir)"
	fi
	S=$(get_gcc_dir)
	elif use upstream_gcc ; then
	GCC_MIRROR=ftp://mirrors.kernel.org/gnu/gcc
	GCC_TARBALL=${GCC_MIRROR}/${P}/${P}.tar.bz2
	wget $GCC_TARBALL
	tar xf ${GCC_TARBALL##*/}
	elif use git_gcc \|\| use next_gcc \|\| use prev_gcc ; then
	aosp_git="${CROS_WORKON_REPO}/${CROS_WORKON_PROJECT}.git"
	if use gcc_repo ; then
	gcc_repository="${GCC_REPO}"
	elif use next_gcc ; then
	gcc_repository="${NEXT_GCC_REPO}"
	else
	gcc_repository="${aosp_git}"
	fi
	git clone --depth 1 --no-single-branch "${gcc_repository}" "${S}"
	if use next_gcc ; then
	GCC_GITHASH="${NEXT_GCC}"
	fi
	if use prev_gcc ; then
	GCC_GITHASH="${PREV_GCC}"
	fi
	if [[ -n ${GCC_GITHASH} ]] ; then
	einfo "Checking out: ${GCC_GITHASH}"
	pushd "$(get_gcc_dir)" >/dev/null
	git checkout ${GCC_GITHASH} \|\| \
	die "Couldn't checkout ${GCC_GITHASH}"
	popd >/dev/null
	fi
	if [[ ${gcc_repository} == "${aosp_git}" ]] ; then
	update_location_for_aosp
	fi
	else
	cros-workon_src_unpack
	update_location_for_aosp
	[[ ${ABI} == "x32" ]] && eapply "${FILESDIR}"/90_all_gcc-4.7-x32.patch
	fi

	COST_PKG_VERSION="$("${FILESDIR}"/chromeos-version.sh "${S}")_cos_gg"
	if [[ -d ${S}/.git ]]; then
	COST_PKG_VERSION+="_$(cd ${S}; git describe --always)"
	elif [[ -n ${VCSID} ]]; then
	COST_PKG_VERSION+="_${VCSID}"
	fi
	COST_PKG_VERSION+="_${PVR}"
	}

	src_configure() {
	if use mounted_gcc && [[ -f $(get_gcc_build_dir)/Makefile ]]; then
	ewarn "Skipping configure due to existing build output"
	return
	fi

	# GCC builds do not like LD being set, it will find correct LD to use.
	unset LD BUILD_LD

	local gcc_langs="c"
	use cxx && gcc_langs+=",c++"
	use go && gcc_langs+=",go"

	# Set configuration based on path variables
	local DATAPATH=$(get_data_dir)
	local confgcc=(
	--prefix=${PREFIX}
	--bindir=$(get_bin_dir)
	--datadir=${DATAPATH}
	--includedir=$(get_lib_dir)/include
	--with-gxx-include-dir=$(get_stdcxx_incdir)
	--mandir=${DATAPATH}/man
	--infodir=${DATAPATH}/info
	--with-python-dir=${DATAPATH#${PREFIX}}/python

	--build=${CBUILD}
	--host=${CHOST}
	--target=${CTARGET}
	--enable-languages=${gcc_langs}
	--enable-__cxa_atexit
	--disable-canonical-system-headers
	--enable-checking=release
	--enable-linker-build-id

	--with-bugurl='http://code.google.com/p/chromium-os/issues/entry'
	--with-pkgversion="${COST_PKG_VERSION}"

	$(use_enable go libatomic)
	$(use_enable multilib)
	$(use_enable openmp libgomp)

	# Disable libs we don't care about.
	--disable-libcilkrts
	--disable-libitm
	--disable-libmudflap
	--disable-libquadmath
	--disable-libssp
	--disable-libsanitizer

	# Enable frame pointer by default for all the boards.
	# originally only enabled for i686 for chromium-os:23321.
	--enable-frame-pointer
	)

	if use vtable_verify; then
	confgcc+=(
	--enable-cxx-flags=-Wl,-L../libsupc++/.libs
	--enable-vtable-verify
	)
	fi

	# Handle target-specific options.
	case ${CTARGET} in
	arm*) #264534
	local arm_arch="${CTARGET%%-*}"
	# Only do this if arm_arch is armv*
	if [[ ${arm_arch} == armv* ]]; then
	# Convert armv7{a,r,m} to armv7-{a,r,m}
	[[ ${arm_arch} == armv7? ]] && arm_arch=${arm_arch/7/7-}
	# Remove endian ('l' / 'eb')
	[[ ${arm_arch} == *l ]] && arm_arch=${arm_arch%l}
	[[ ${arm_arch} == *eb ]] && arm_arch=${arm_arch%eb}
	confgcc+=(
	--with-arch=${arm_arch}
	--disable-esp
	)
	fi
	use hardfp && confgcc+=( --with-float=hard )
	use thumb && confgcc+=( --with-mode=thumb )
	;;
	i?86*)
	# Hardened is enabled for x86, but disabled for ARM.
	confgcc+=(
	--enable-esp
	--with-arch=atom
	--with-tune=atom
	)
	;;
	x86_64*-gnux32)
	confgcc+=( --with-abi=x32 --with-multilib-list=mx32 )
	;;
	esac

	if is_crosscompile; then
	confgcc+=( --enable-poison-system-directories )

	local needed_libc="glibc"
	if [[ -n ${needed_libc} ]]; then
	if ! has_version ${CATEGORY}/${needed_libc}; then
	confgcc+=( --disable-shared --disable-threads --without-headers )
	elif has_version "${CATEGORY}/${needed_libc}[crosscompile_opts_headers-only]"; then
	confgcc+=( --disable-shared --with-sysroot=/usr/${CTARGET} )
	else
	confgcc+=( --with-sysroot=/usr/${CTARGET} )
	fi
	fi
	else
	confgcc+=( --enable-shared --enable-threads=posix )
	fi

	# Finally add the user options (if any).
	confgcc+=( ${EXTRA_ECONF} )

	# Build in a separate build tree
	mkdir -p $(get_gcc_build_dir) \|\| die
	cd $(get_gcc_build_dir) \|\| die

	# and now to do the actual configuration
	addwrite /dev/zero
	echo "Running this:"
	echo "$(get_gcc_dir)"/configure "${confgcc[@]}"
	"$(get_gcc_dir)"/configure "${confgcc[@]}" \|\| die
	}

	src_compile() {
	cd "$(get_gcc_build_dir)"
	GCC_CFLAGS="$(portageq envvar CFLAGS)"
	TARGET_FLAGS=""
	TARGET_GO_FLAGS=""

	if use hardened ; then
	TARGET_FLAGS="${TARGET_FLAGS} -fstack-protector-strong -D_FORTIFY_SOURCE=2"
	fi

	EXTRA_CFLAGS_FOR_TARGET="${TARGET_FLAGS} ${CFLAGS_FOR_TARGET}"
	EXTRA_CXXFLAGS_FOR_TARGET="${TARGET_FLAGS} ${CXXFLAGS_FOR_TARGET}"

	if use vtable_verify ; then
	EXTRA_CXXFLAGS_FOR_TARGET+=" -fvtable-verify=std"
	fi

	# libgo on arm must be compiled with -marm. Go's panic/recover functionality
	# is broken in thumb mode.
	if [[ ${CTARGET} == arm* ]]; then
	TARGET_GO_FLAGS="${TARGET_GO_FLAGS} -marm"
	fi
	EXTRA_GOCFLAGS_FOR_TARGET="${TARGET_GO_FLAGS} ${GOCFLAGS_FOR_TARGET}"

	# Do not link libgcc with gold. That is known to fail on internal linker
	# errors. See crosbug.com/16719
	local LD_NON_GOLD="$(get_binutils_path_ld ${CTARGET})/ld"

	emake CFLAGS="${GCC_CFLAGS}" \
	LDFLAGS="-Wl,-O1" \
	STAGE1_CFLAGS="-O2 -pipe" \
	BOOT_CFLAGS="-O2" \
	CFLAGS_FOR_TARGET="$(get_make_var CFLAGS_FOR_TARGET) ${EXTRA_CFLAGS_FOR_TARGET}" \
	CXXFLAGS_FOR_TARGET="$(get_make_var CXXFLAGS_FOR_TARGET) ${EXTRA_CXXFLAGS_FOR_TARGET}" \
	GOCFLAGS_FOR_TARGET="$(get_make_var GOCFLAGS_FOR_TARGET) ${EXTRA_GOCFLAGS_FOR_TARGET}" \
	LD_FOR_TARGET="${LD_NON_GOLD}" \
	all
	}

	# Logic copied from Gentoo's toolchain.eclass.
	toolchain_src_install() {
	BINPATH=$(get_bin_dir) # cros to Gentoo glue

	# These should be symlinks
	dodir /usr/bin
	cd "${D}"${BINPATH}
	for x in cpp gcc g++ c++ gcov g77 gcj gcjh gfortran gccgo ; do
	# For some reason, g77 gets made instead of ${CTARGET}-g77...
	# this should take care of that
	[[ -f ${x} ]] && mv ${x} ${CTARGET}-${x}

	if [[ -f ${CTARGET}-${x} ]] ; then
	if ! is_crosscompile ; then
	ln -sf ${CTARGET}-${x} ${x}
	dosym ${BINPATH}/${CTARGET}-${x} \
	/usr/bin/${x}-${GCC_CONFIG_VER}
	fi

	# Create version-ed symlinks
	dosym ${BINPATH}/${CTARGET}-${x} \
	/usr/bin/${CTARGET}-${x}-${GCC_CONFIG_VER}
	fi

	if [[ -f ${CTARGET}-${x}-${GCC_CONFIG_VER} ]] ; then
	rm -f ${CTARGET}-${x}-${GCC_CONFIG_VER}
	ln -sf ${CTARGET}-${x} ${CTARGET}-${x}-${GCC_CONFIG_VER}
	fi
	done
	}

	src_install() {
	cd "$(get_gcc_build_dir)"
	emake DESTDIR="${D}" install

	find "${D}" -name libiberty.a -exec rm -f "{}" \;

	# Move the libraries to the proper location
	gcc_movelibs

	# Move pretty-printers to gdb datadir to shut ldconfig up
	gcc_move_pretty_printers

	GCC_CONFIG_VER=$(get_gcc_base_ver)
	dodir /etc/env.d/gcc
	insinto /etc/env.d/gcc

	local LDPATH=$(get_lib_dir)
	for SUBDIR in 32 64 ; do
	if [[ -d ${D}/${LDPATH}/${SUBDIR} ]]
	then
	LDPATH="${LDPATH}:${LDPATH}/${SUBDIR}"
	fi
	done

	cat <<-EOF > env.d
	LDPATH="${LDPATH}"
	MANPATH="$(get_data_dir)/man"
	INFOPATH="$(get_data_dir)/info"
	STDCXX_INCDIR="$(get_stdcxx_incdir)"
	CTARGET=${CTARGET}
	GCC_PATH="$(get_bin_dir)"
	GCC_VER="$(get_gcc_base_ver)"
	EOF
	newins env.d $(get_gcc_config_file)
	cd -

	toolchain_src_install

	cd "${D}$(get_bin_dir)"

	local use_llvm_next=false
	if use llvm-next \|\| use llvm-tot
	then
	use_llvm_next=true
	fi

	if is_crosscompile ; then
	local sysroot_wrapper_file_prefix
	local sysroot_wrapper_config
	if use hardened
	then
	sysroot_wrapper_file_prefix=sysroot_wrapper.hardened
	sysroot_wrapper_config=cros.hardened
	else
	sysroot_wrapper_file_prefix=sysroot_wrapper
	sysroot_wrapper_config=cros.nonhardened
	fi

	exeinto "$(get_bin_dir)"
	cat "${FILESDIR}/bisect_driver.py" > \
	"${D}$(get_bin_dir)/bisect_driver.py" \|\| die

	# Note: We are always producing both versions, with and without ccache,
	# so we can replace the behavior of the wrapper without rebuilding it.
	# Used e.g. in chromite/scripts/cros_setup_toolchains.py to disable the
	# ccache for simplechrome toolchains.
	local ccache_suffixes=(noccache ccache)
	local ccache_option_values=(false true)
	for ccache_index in {0,1}; do
	local ccache_suffix="${ccache_suffixes[${ccache_index}]}"
	local ccache_option="${ccache_option_values[${ccache_index}]}"
	# Build new golang wrapper
	"${FILESDIR}/compiler_wrapper/build.py" --config="${sysroot_wrapper_config}" \
	--use_ccache="${ccache_option}" \
	--use_llvm_next="${use_llvm_next}" \
	--output_file="${D}$(get_bin_dir)/${sysroot_wrapper_file_prefix}.${ccache_suffix}" \|\| die
	done

	local use_ccache_index
	use_ccache_index="$(usex wrapper_ccache 1 0)"
	local sysroot_wrapper_file="${sysroot_wrapper_file_prefix}.${ccache_suffixes[${use_ccache_index}]}"

	for x in c++ g++ gcc; do
	if [[ -f "${CTARGET}-${x}" ]]; then
	mv "${CTARGET}-${x}" "${CTARGET}-${x}.real"
	dosym "${sysroot_wrapper_file}" "$(get_bin_dir)/${CTARGET}-${x}" \|\| die
	fi
	done
	for x in clang clang++; do
	dosym "${sysroot_wrapper_file}" "$(get_bin_dir)/${CTARGET}-${x}" \|\| die
	done
	if use go; then
	local wrapper="sysroot_wrapper.gccgo"
	doexe "${FILESDIR}/${wrapper}" \|\| die
	mv "${CTARGET}-gccgo" "${CTARGET}-gccgo.real" \|\| die
	dosym "${wrapper}" "$(get_bin_dir)/${CTARGET}-gccgo" \|\| die
	fi
	else
	local sysroot_wrapper_file=host_wrapper

	exeinto "$(get_bin_dir)"

	"${FILESDIR}/compiler_wrapper/build.py" --config=cros.host --use_ccache=false \
	--use_llvm_next="${use_llvm_next}" \
	--output_file="${D}$(get_bin_dir)/${sysroot_wrapper_file}" \|\| die

	for x in c++ g++ gcc; do
	if [[ -f "${CTARGET}-${x}" ]]; then
	mv "${CTARGET}-${x}" "${CTARGET}-${x}.real"
	dosym "${sysroot_wrapper_file}" "$(get_bin_dir)/${CTARGET}-${x}" \|\| die
	fi
	if [[ -f "${x}" ]]; then
	ln "${CTARGET}-${x}.real" "${x}.real" \|\| die
	rm "${x}" \|\| die
	dosym "${sysroot_wrapper_file}" "$(get_bin_dir)/${x}" \|\| die
	# Add a cc.real symlink that points to gcc.real, https://crbug.com/1090449
	if [[ "${x}" == "gcc" ]]; then
	dosym "${x}.real" "$(get_bin_dir)/cc.real"
	fi
	fi
	done
	fi

	if use tests
	then
	TEST_INSTALL_DIR="usr/local/dejagnu/gcc"
	dodir ${TEST_INSTALL_DIR}
	cd ${D}/${TEST_INSTALL_DIR}
	tar -czf "tests.tar.gz" ${WORKDIR}
	fi
	}

	pkg_postinst() {
	gcc-config $(get_gcc_config_file)
	}

	pkg_postrm() {
	if is_crosscompile ; then
	if [[ -z $(ls "${ROOT}"/etc/env.d/gcc/${CTARGET}* 2>/dev/null) ]] ; then
	rm -f "${ROOT}"/etc/env.d/gcc/config-${CTARGET}
	rm -f "${ROOT}"/etc/env.d/??gcc-${CTARGET}
	rm -f "${ROOT}"/usr/bin/${CTARGET}-{gcc,{g,c}++}{,32,64}
	fi
	fi
	}

	get_gcc_dir() {
	local GCCDIR
	if use mounted_gcc ; then
	GCCDIR=${GCC_SOURCE_PATH:=/usr/local/toolchain_root/gcc}
	elif use upstream_gcc ; then
	GCCDIR=${P}
	else
	GCCDIR=${S}
	fi
	echo "${GCCDIR}"
	}

	get_gcc_build_dir() {
	echo "$(get_gcc_dir)-build-${CTARGET}"
	}

	get_gcc_base_ver() {
	cat "$(get_gcc_dir)/gcc/BASE-VER"
	}

	get_stdcxx_incdir() {
	echo "$(get_lib_dir)/include/g++-v4"
	}

	get_lib_dir() {
	echo "${PREFIX}/lib/gcc/${CTARGET}/$(get_gcc_base_ver)"
	}

	get_bin_dir() {
	if is_crosscompile ; then
	echo ${PREFIX}/${CHOST}/${CTARGET}/gcc-bin/$(get_gcc_base_ver)
	else
	echo ${PREFIX}/${CTARGET}/gcc-bin/$(get_gcc_base_ver)
	fi
	}

	get_data_dir() {
	echo "${PREFIX}/share/gcc-data/${CTARGET}/$(get_gcc_base_ver)"
	}

	get_gcc_config_file() {
	echo ${CTARGET}-${PV}
	}

	# Grab a variable from the build system (taken from linux-info.eclass)
	get_make_var() {
	local var=$1 makefile=${2:-$(get_gcc_build_dir)/Makefile}
	echo -e "e:\\n\\t@echo \$(${var})\\ninclude ${makefile}" \| \
	r=${makefile%/*} emake --no-print-directory -s -f - 2>/dev/null
	}
	XGCC() { get_make_var GCC_FOR_TARGET ; }

	gcc_move_pretty_printers() {
	LIBPATH=$(get_lib_dir) # cros to Gentoo glue

	local py gdbdir=/usr/share/gdb/auto-load${LIBPATH}
	pushd "${D}"${LIBPATH} >/dev/null
	for py in $(find . -name '*-gdb.py') ; do
	local multidir=${py%/*}
	insinto "${gdbdir}/${multidir}"
	sed -i "/^libdir =/s:=.*:= '${LIBPATH}/${multidir}':" "${py}" \|\| die #348128
	doins "${py}" \|\| die
	rm "${py}" \|\| die
	done
	popd >/dev/null
	}

	# make sure the libtool archives have libdir set to where they actually
	# -are-, and not where they -used- to be. also, any dependencies we have
	# on our own .la files need to be updated.
	fix_libtool_libdir_paths() {
	pushd "${D}" >/dev/null

	pushd "./${1}" >/dev/null
	local dir="${PWD#${D%/}}"
	local allarchives=$(echo *.la)
	allarchives="\(${allarchives// /\\\|}\)"
	popd >/dev/null

	sed -i \
	-e "/^libdir=/s:=.*:='${dir}':" \
	./${dir}/*.la
	sed -i \
	-e "/^dependency_libs=/s:/[^ ]*/${allarchives}:${LIBPATH}/\1:g" \
	$(find ./${PREFIX}/lib* -maxdepth 3 -name '*.la') \
	./${dir}/*.la

	popd >/dev/null
	}

	gcc_movelibs() {
	LIBPATH=$(get_lib_dir) # cros to Gentoo glue

	local multiarg removedirs=""
	for multiarg in $($(XGCC) -print-multi-lib) ; do
	multiarg=${multiarg#*;}
	multiarg=${multiarg//@/ -}

	local OS_MULTIDIR=$($(XGCC) ${multiarg} --print-multi-os-directory)
	local MULTIDIR=$($(XGCC) ${multiarg} --print-multi-directory)
	local TODIR=${D}${LIBPATH}/${MULTIDIR}
	local FROMDIR=

	[[ -d ${TODIR} ]] \|\| mkdir -p ${TODIR}

	for FROMDIR in \
	${LIBPATH}/${OS_MULTIDIR} \
	${LIBPATH}/../${MULTIDIR} \
	${PREFIX}/lib/${OS_MULTIDIR} \
	${PREFIX}/${CTARGET}/lib/${OS_MULTIDIR}
	do
	removedirs="${removedirs} ${FROMDIR}"
	FROMDIR=${D}${FROMDIR}
	if [[ ${FROMDIR} != "${TODIR}" && -d ${FROMDIR} ]] ; then
	local files=$(find "${FROMDIR}" -maxdepth 1 ! -type d 2>/dev/null)
	if [[ -n ${files} ]] ; then
	mv ${files} "${TODIR}"
	fi
	fi
	done
	fix_libtool_libdir_paths "${LIBPATH}/${MULTIDIR}"
	done

	# We remove directories separately to avoid this case:
	# mv SRC/lib/../lib/*.o DEST
	# rmdir SRC/lib/../lib/
	# mv SRC/lib/../lib32/*.o DEST # Bork
	for FROMDIR in ${removedirs} ; do
	rmdir "${D}"${FROMDIR} >& /dev/null
	done
	find "${D}" -type d \| xargs rmdir >& /dev/null
	}

	# If you need to force a cros_workon uprev, change this number (you can use next
	# uprev): 271