sys-devel/gcc/gcc-10.2.0.ebuild - third_party/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"

 PATCH_VER="6"
 PATCH_DEV=${PATCH_DEV:-slyfox}

 inherit eutils binutils-funcs

 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="${RDEPEND}
 	test? (
 		>=dev-util/dejagnu-1.4.4
 		>=sys-devel/autogen-5.5.4
 	)
 	>=sys-apps/texinfo-4.8
 	>=sys-devel/bison-1.875"
 PDEPEND=">=sys-devel/gcc-config-2.3"
 BDEPEND="${CATEGORY}/binutils"

 RESTRICT="strip"

 IUSE="cet 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"

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

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

 GCC_PV=${TOOLCHAIN_GCC_PV:-${PV}}
 GCC_PVR=${GCC_PV}
 [[ ${PR} != "r0" ]] && GCC_PVR=${GCC_PVR}-${PR}

 # GCC_RELEASE_VER must always match 'gcc/BASE-VER' value.
 # It's an internal representation of gcc version used for:
 # - versioned paths on disk
 # - 'gcc -dumpversion' output. Must always match <digit>.<digit>.<digit>.
 GCC_RELEASE_VER=$(ver_cut 1-3 "${GCC_PV}")

 GCC_BRANCH_VER=$(ver_cut 1-2 "${GCC_PV}")

 # Ideally this variable should allow for custom gentoo versioning
 # of binary and gcc-config names not directly tied to upstream
 # versioning. In practive it's hard to untangle from gcc/BASE-VER
 # (GCC_RELEASE_VER) value.
 GCC_CONFIG_VER=${GCC_RELEASE_VER}

 PREFIX=${TOOLCHAIN_PREFIX:-${EPREFIX}/usr}

 LIBPATH=${TOOLCHAIN_LIBPATH:-${PREFIX}/lib/gcc/${CTARGET}/${GCC_CONFIG_VER}}
 INCLUDEPATH=${TOOLCHAIN_INCLUDEPATH:-${LIBPATH}/include}

 if is_crosscompile ; then
 	BINPATH=${TOOLCHAIN_BINPATH:-${PREFIX}/${CHOST}/${CTARGET}/gcc-bin/${GCC_CONFIG_VER}}
 else
 	BINPATH=${TOOLCHAIN_BINPATH:-${PREFIX}/${CTARGET}/gcc-bin/${GCC_CONFIG_VER}}
 fi

 DATAPATH=${TOOLCHAIN_DATAPATH:-${PREFIX}/share/gcc-data/${CTARGET}/${GCC_CONFIG_VER}}

 # Dont install in /usr/include/g++-v3/, but in gcc internal directory.
 # We will handle /usr/include/g++-v3/ with gcc-config ...
 STDCXX_INCDIR=${TOOLCHAIN_STDCXX_INCDIR:-${LIBPATH}/include/g++-v${GCC_BRANCH_VER/\.*/}}

 SLOT="${CTARGET}"

 PREFIX="/usr"

 SRC_URI="mirror://gnu/gcc/gcc-${PV}/gcc-${PV}.tar.xz
 	https://dev.gentoo.org/~${PATCH_DEV}/distfiles/gcc-${GCC_RELEASE_VER}-patches-${PATCH_VER}.tar.bz2"

 PATCHES=(
 	"${FILESDIR}/0001-Fix-emutls.c-to-not-leak-pthread-keys.patch"
 )

 S="${WORKDIR}/gcc-${PV}"
 MY_BUILDDIR="${WORKDIR}/build-${CTARGET}"

 src_prepare() {
 	einfo "Applying Gentoo GCC patches"
 	eapply "${WORKDIR}/patch"

 	# Apply things from PATCHES and user dirs
 	default
 }

 src_configure() {
 	if [[ -f ${MY_BUILDDIR}/Makefile ]]; then
 		ewarn "Skipping configure due to existing build output"
 		return
 	fi
 	cros_use_gcc

 	# 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 confgcc=(
 		--prefix="${PREFIX}"
 		--bindir="${BINPATH}"
 		--datadir="${DATAPATH}"
 		--includedir="${INCLUDEPATH}"
 		--with-gxx-include-dir="${STDCXX_INCDIR}"
 		--mandir="${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='https://bugs.chromium.org'

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

 		# Disable libs we don't care about.
 		--disable-libcilkrts
 		--disable-libitm
 		--disable-libcc1
 		--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

 		# Allow user to opt into CET. Ideally this should be auto-enabled
 		# based on binutils config via the default --enable-cet=auto but it
 		# does not alawys work and binutils has its own problems for which it
 		# added its own cet use flag, so also add it here to be safe and explicit.
 		$(use_enable cet)
 	)

 	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
 		if use hardfp; then
 			confgcc+=( --with-float=hard )
 			case ${CTARGET} in
 				armv6*) confgcc+=( --with-fpu=vfp ) ;;
 				armv7a*) confgcc+=( --with-fpu=vfpv3 ) ;;
 				armv7m*) confgcc+=( --with-fpu=vfpv2 ) ;;
 			esac
 		fi
 		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 "${MY_BUILDDIR}" || die
 	cd "${MY_BUILDDIR}" || die

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

 src_compile() {
 	cd "${MY_BUILDDIR}" || die
 	GCC_CFLAGS="$(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="${TARGET_FLAGS}"
 	EXTRA_CXXFLAGS_FOR_TARGET="${TARGET_FLAGS}"

 	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}"

 	# 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() {
 	# These should be symlinks
 	dodir /usr/bin
 	cd "${D}${BINPATH}" || die
 	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 "${MY_BUILDDIR}" || die

 	# Don't allow symlinks in private gcc include dir as this can break the build
 	find gcc/include*/ -type l -delete

 	S="${MY_BUILDDIR}" emake DESTDIR="${D}" install || die

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

 	# Punt some tools which are really only useful while building gcc
 	find "${ED}" -name install-tools -prune -type d -exec rm -rf "{}" \;
 	# Move the libraries to the proper location
 	gcc_movelibs

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

 	dodir /etc/env.d/gcc
 	insinto /etc/env.d/gcc

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

 	cat <<-EOF > env.d
 LDPATH="${LDPATH}"
 MANPATH="${DATAPATH}/man"
 INFOPATH="${DATAPATH}/info"
 STDCXX_INCDIR="${STDCXX_INCDIR##*/}"
 CTARGET=${CTARGET}
 GCC_PATH="${BINPATH}"
 GCC_VER="${GCC_RELEASE_VER}"
 EOF
 	newins env.d "$(get_gcc_config_file)"
 	cd - || die

 	toolchain_src_install

 	cd "${D}${BINPATH}" || die

 	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 "${BINPATH}"
 		cat "${FILESDIR}/bisect_driver.py" > \
 			"${D}${BINPATH}/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="${D}${BINPATH}/${sysroot_wrapper_file_prefix}.${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 "${sysroot_wrapper_file}" "${BINPATH}/${CTARGET}-${x}" || die
 			fi
 		done
 		if use go; then
 			local wrapper="sysroot_wrapper.gccgo"
 			doexe "${FILESDIR}/${wrapper}" || die
 			mv "${CTARGET}-gccgo" "${CTARGET}-gccgo.real" || die
 			dosym "${wrapper}" "${BINPATH}/${CTARGET}-gccgo" || die
 		fi
 	else
 		local sysroot_wrapper_file=host_wrapper

 		exeinto "${BINPATH}"

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

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

 	if use tests
 	then
 		TEST_INSTALL_DIR="usr/local/dejagnu/gcc"
 		dodir ${TEST_INSTALL_DIR}
 		cd "${D}/${TEST_INSTALL_DIR}" || die
 		tar -czf "tests.tar.gz" "${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_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:-${MY_BUILDDIR}/Makefile}
 	echo -e "e:\\n\\t@echo \$(${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() {
 	local py gdbdir=/usr/share/gdb/auto-load${LIBPATH}
 	pushd "${D}${LIBPATH}" >/dev/null || die
 	while IFS= read -r -d '' py; do
 		local multidir=${py%/*}
 		insinto "${gdbdir}/${multidir}"
 		sed -i "/^libdir =/s:=.*:= '${LIBPATH}/${multidir}':" "${py}" || die #348128
 		doins "${py}" || die
 		rm "${py}" || die
 	done <   <(find . -name '*-gdb.py' -print0)
 	popd >/dev/null || die
 }

 # Move around the libs to the right location.  For some reason,
 # when installing gcc, it dumps internal libraries into /usr/lib
 # instead of the private gcc lib path
 gcc_movelibs() {
 	# For all the libs that are built for CTARGET, move them into the
 	# compiler-specific CTARGET internal dir.
 	local x multiarg removedirs=""
 	for multiarg in $($(XGCC) -print-multi-lib) ; do
 		multiarg=${multiarg#*;}
 		multiarg=${multiarg//@/ -}

 		# disable overzealous shellcheck because multiarg can be empty and passing
 		# "" as an argument modifies the behaviour of xgcc breaking install paths.
 		# shellcheck disable=SC2086
 		local OS_MULTIDIR=$($(XGCC) ${multiarg} --print-multi-os-directory)
 		# shellcheck disable=SC2086
 		local MULTIDIR=$($(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 ${FROMDIR} ]] ; then
 				find "${FROMDIR}" -maxdepth 1 ! -type d -exec \
 					mv -ft "${TODIR}" {} +
 			fi
 		done
 		fix_libtool_libdir_paths "${LIBPATH}/${MULTIDIR}"

 		# SLOT up libgcj.pc if it's available (and let gcc-config worry about links)
 		FROMDIR="${PREFIX}/lib/${OS_MULTIDIR}"
 		for x in "${D}${FROMDIR}"/pkgconfig/libgcj*.pc ; do
 			[[ -f ${x} ]] || continue
 			sed -i "/^libdir=/s:=.*:=${LIBPATH}/${MULTIDIR}:" "${x}" || die
 			mv "${x}" "${D}${FROMDIR}/pkgconfig/libgcj-${GCC_PV}.pc" || die
 		done
 	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}${FROMDIR}" >& /dev/null
 	done
 	find -depth "${ED}" -type d -exec rmdir {} + >& /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() {
 	local libpath="$1"

 	pushd "${D}" >/dev/null || die

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

 	# The libdir might not have any .la files. #548782
 	find "./${dir}" -maxdepth 1 -name '*.la' \
 		-exec sed -i -e "/^libdir=/s:=.*:='${dir}':" {} + || die
 	# Would be nice to combine these, but -maxdepth can not be specified
 	# on sub-expressions.
 	find "./${PREFIX}"/lib* -maxdepth 3 -name '*.la' \
 		-exec sed -i -e "/^dependency_libs=/s:/[^ ]*/${allarchives}:${libpath}/\1:g" {} + || die
 	find "./${dir}/" -maxdepth 1 -name '*.la' \
 		-exec sed -i -e "/^dependency_libs=/s:/[^ ]*/${allarchives}:${libpath}/\1:g" {} + || die

 	popd >/dev/null || die
 }
	# 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"

	PATCH_VER="6"
	PATCH_DEV=${PATCH_DEV:-slyfox}

	inherit eutils binutils-funcs

	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="${RDEPEND}
	test? (
	>=dev-util/dejagnu-1.4.4
	>=sys-devel/autogen-5.5.4
	)
	>=sys-apps/texinfo-4.8
	>=sys-devel/bison-1.875"
	PDEPEND=">=sys-devel/gcc-config-2.3"
	BDEPEND="${CATEGORY}/binutils"

	RESTRICT="strip"

	IUSE="cet 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"

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

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

	GCC_PV=${TOOLCHAIN_GCC_PV:-${PV}}
	GCC_PVR=${GCC_PV}
	[[ ${PR} != "r0" ]] && GCC_PVR=${GCC_PVR}-${PR}

	# GCC_RELEASE_VER must always match 'gcc/BASE-VER' value.
	# It's an internal representation of gcc version used for:
	# - versioned paths on disk
	# - 'gcc -dumpversion' output. Must always match <digit>.<digit>.<digit>.
	GCC_RELEASE_VER=$(ver_cut 1-3 "${GCC_PV}")

	GCC_BRANCH_VER=$(ver_cut 1-2 "${GCC_PV}")

	# Ideally this variable should allow for custom gentoo versioning
	# of binary and gcc-config names not directly tied to upstream
	# versioning. In practive it's hard to untangle from gcc/BASE-VER
	# (GCC_RELEASE_VER) value.
	GCC_CONFIG_VER=${GCC_RELEASE_VER}

	PREFIX=${TOOLCHAIN_PREFIX:-${EPREFIX}/usr}

	LIBPATH=${TOOLCHAIN_LIBPATH:-${PREFIX}/lib/gcc/${CTARGET}/${GCC_CONFIG_VER}}
	INCLUDEPATH=${TOOLCHAIN_INCLUDEPATH:-${LIBPATH}/include}

	if is_crosscompile ; then
	BINPATH=${TOOLCHAIN_BINPATH:-${PREFIX}/${CHOST}/${CTARGET}/gcc-bin/${GCC_CONFIG_VER}}
	else
	BINPATH=${TOOLCHAIN_BINPATH:-${PREFIX}/${CTARGET}/gcc-bin/${GCC_CONFIG_VER}}
	fi

	DATAPATH=${TOOLCHAIN_DATAPATH:-${PREFIX}/share/gcc-data/${CTARGET}/${GCC_CONFIG_VER}}

	# Dont install in /usr/include/g++-v3/, but in gcc internal directory.
	# We will handle /usr/include/g++-v3/ with gcc-config ...
	STDCXX_INCDIR=${TOOLCHAIN_STDCXX_INCDIR:-${LIBPATH}/include/g++-v${GCC_BRANCH_VER/\.*/}}

	SLOT="${CTARGET}"

	PREFIX="/usr"

	SRC_URI="mirror://gnu/gcc/gcc-${PV}/gcc-${PV}.tar.xz
	https://dev.gentoo.org/~${PATCH_DEV}/distfiles/gcc-${GCC_RELEASE_VER}-patches-${PATCH_VER}.tar.bz2"

	PATCHES=(
	"${FILESDIR}/0001-Fix-emutls.c-to-not-leak-pthread-keys.patch"
	)

	S="${WORKDIR}/gcc-${PV}"
	MY_BUILDDIR="${WORKDIR}/build-${CTARGET}"

	src_prepare() {
	einfo "Applying Gentoo GCC patches"
	eapply "${WORKDIR}/patch"

	# Apply things from PATCHES and user dirs
	default
	}

	src_configure() {
	if [[ -f ${MY_BUILDDIR}/Makefile ]]; then
	ewarn "Skipping configure due to existing build output"
	return
	fi
	cros_use_gcc

	# 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 confgcc=(
	--prefix="${PREFIX}"
	--bindir="${BINPATH}"
	--datadir="${DATAPATH}"
	--includedir="${INCLUDEPATH}"
	--with-gxx-include-dir="${STDCXX_INCDIR}"
	--mandir="${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='https://bugs.chromium.org'

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

	# Disable libs we don't care about.
	--disable-libcilkrts
	--disable-libitm
	--disable-libcc1
	--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

	# Allow user to opt into CET. Ideally this should be auto-enabled
	# based on binutils config via the default --enable-cet=auto but it
	# does not alawys work and binutils has its own problems for which it
	# added its own cet use flag, so also add it here to be safe and explicit.
	$(use_enable cet)
	)

	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
	if use hardfp; then
	confgcc+=( --with-float=hard )
	case ${CTARGET} in
	armv6*) confgcc+=( --with-fpu=vfp ) ;;
	armv7a*) confgcc+=( --with-fpu=vfpv3 ) ;;
	armv7m*) confgcc+=( --with-fpu=vfpv2 ) ;;
	esac
	fi
	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 "${MY_BUILDDIR}" \|\| die
	cd "${MY_BUILDDIR}" \|\| die

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

	src_compile() {
	cd "${MY_BUILDDIR}" \|\| die
	GCC_CFLAGS="$(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="${TARGET_FLAGS}"
	EXTRA_CXXFLAGS_FOR_TARGET="${TARGET_FLAGS}"

	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}"

	# 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() {
	# These should be symlinks
	dodir /usr/bin
	cd "${D}${BINPATH}" \|\| die
	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 "${MY_BUILDDIR}" \|\| die

	# Don't allow symlinks in private gcc include dir as this can break the build
	find gcc/include*/ -type l -delete

	S="${MY_BUILDDIR}" emake DESTDIR="${D}" install \|\| die

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

	# Punt some tools which are really only useful while building gcc
	find "${ED}" -name install-tools -prune -type d -exec rm -rf "{}" \;
	# Move the libraries to the proper location
	gcc_movelibs

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

	dodir /etc/env.d/gcc
	insinto /etc/env.d/gcc

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

	cat <<-EOF > env.d
	LDPATH="${LDPATH}"
	MANPATH="${DATAPATH}/man"
	INFOPATH="${DATAPATH}/info"
	STDCXX_INCDIR="${STDCXX_INCDIR##*/}"
	CTARGET=${CTARGET}
	GCC_PATH="${BINPATH}"
	GCC_VER="${GCC_RELEASE_VER}"
	EOF
	newins env.d "$(get_gcc_config_file)"
	cd - \|\| die

	toolchain_src_install

	cd "${D}${BINPATH}" \|\| die

	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 "${BINPATH}"
	cat "${FILESDIR}/bisect_driver.py" > \
	"${D}${BINPATH}/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="${D}${BINPATH}/${sysroot_wrapper_file_prefix}.${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 "${sysroot_wrapper_file}" "${BINPATH}/${CTARGET}-${x}" \|\| die
	fi
	done
	if use go; then
	local wrapper="sysroot_wrapper.gccgo"
	doexe "${FILESDIR}/${wrapper}" \|\| die
	mv "${CTARGET}-gccgo" "${CTARGET}-gccgo.real" \|\| die
	dosym "${wrapper}" "${BINPATH}/${CTARGET}-gccgo" \|\| die
	fi
	else
	local sysroot_wrapper_file=host_wrapper

	exeinto "${BINPATH}"

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

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

	if use tests
	then
	TEST_INSTALL_DIR="usr/local/dejagnu/gcc"
	dodir ${TEST_INSTALL_DIR}
	cd "${D}/${TEST_INSTALL_DIR}" \|\| die
	tar -czf "tests.tar.gz" "${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_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:-${MY_BUILDDIR}/Makefile}
	echo -e "e:\\n\\t@echo \$(${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() {
	local py gdbdir=/usr/share/gdb/auto-load${LIBPATH}
	pushd "${D}${LIBPATH}" >/dev/null \|\| die
	while IFS= read -r -d '' py; do
	local multidir=${py%/*}
	insinto "${gdbdir}/${multidir}"
	sed -i "/^libdir =/s:=.*:= '${LIBPATH}/${multidir}':" "${py}" \|\| die #348128
	doins "${py}" \|\| die
	rm "${py}" \|\| die
	done < <(find . -name '*-gdb.py' -print0)
	popd >/dev/null \|\| die
	}

	# Move around the libs to the right location. For some reason,
	# when installing gcc, it dumps internal libraries into /usr/lib
	# instead of the private gcc lib path
	gcc_movelibs() {
	# For all the libs that are built for CTARGET, move them into the
	# compiler-specific CTARGET internal dir.
	local x multiarg removedirs=""
	for multiarg in $($(XGCC) -print-multi-lib) ; do
	multiarg=${multiarg#*;}
	multiarg=${multiarg//@/ -}

	# disable overzealous shellcheck because multiarg can be empty and passing
	# "" as an argument modifies the behaviour of xgcc breaking install paths.
	# shellcheck disable=SC2086
	local OS_MULTIDIR=$($(XGCC) ${multiarg} --print-multi-os-directory)
	# shellcheck disable=SC2086
	local MULTIDIR=$($(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 ${FROMDIR} ]] ; then
	find "${FROMDIR}" -maxdepth 1 ! -type d -exec \
	mv -ft "${TODIR}" {} +
	fi
	done
	fix_libtool_libdir_paths "${LIBPATH}/${MULTIDIR}"

	# SLOT up libgcj.pc if it's available (and let gcc-config worry about links)
	FROMDIR="${PREFIX}/lib/${OS_MULTIDIR}"
	for x in "${D}${FROMDIR}"/pkgconfig/libgcj*.pc ; do
	[[ -f ${x} ]] \|\| continue
	sed -i "/^libdir=/s:=.*:=${LIBPATH}/${MULTIDIR}:" "${x}" \|\| die
	mv "${x}" "${D}${FROMDIR}/pkgconfig/libgcj-${GCC_PV}.pc" \|\| die
	done
	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}${FROMDIR}" >& /dev/null
	done
	find -depth "${ED}" -type d -exec rmdir {} + >& /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() {
	local libpath="$1"

	pushd "${D}" >/dev/null \|\| die

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

	# The libdir might not have any .la files. #548782
	find "./${dir}" -maxdepth 1 -name '*.la' \
	-exec sed -i -e "/^libdir=/s:=.*:='${dir}':" {} + \|\| die
	# Would be nice to combine these, but -maxdepth can not be specified
	# on sub-expressions.
	find "./${PREFIX}"/lib* -maxdepth 3 -name '*.la' \
	-exec sed -i -e "/^dependency_libs=/s:/[^ ]*/${allarchives}:${libpath}/\1:g" {} + \|\| die
	find "./${dir}/" -maxdepth 1 -name '*.la' \
	-exec sed -i -e "/^dependency_libs=/s:/[^ ]*/${allarchives}:${libpath}/\1:g" {} + \|\| die

	popd >/dev/null \|\| die
	}