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From: "Magnus Granberg" <zorry@gentoo.org>
To: gentoo-commits@lists.gentoo.org
Subject: [gentoo-commits] proj/hardened-dev:testing commit in: eclass/
Date: Wed, 16 Oct 2013 20:09:43 +0000 (UTC)	[thread overview]
Message-ID: <1381954158.c942f76a983643e97f9cf36768193021e87a6d21.zorry@gentoo> (raw)

commit:     c942f76a983643e97f9cf36768193021e87a6d21
Author:     Magnus Granberg <zorry <AT> gentoo <DOT> org>
AuthorDate: Wed Oct 16 20:09:18 2013 +0000
Commit:     Magnus Granberg <zorry <AT> gentoo <DOT> org>
CommitDate: Wed Oct 16 20:09:18 2013 +0000
URL:        http://git.overlays.gentoo.org/gitweb/?p=proj/hardened-dev.git;a=commit;h=c942f76a

Update toolchain eclass to r1

---
 eclass/{toolchain.eclass => toolchain-r1.eclass} | 2037 ++++++++++++++--------
 1 file changed, 1266 insertions(+), 771 deletions(-)

diff --git a/eclass/toolchain.eclass b/eclass/toolchain-r1.eclass
similarity index 52%
rename from eclass/toolchain.eclass
rename to eclass/toolchain-r1.eclass
index 5717a32..a227391 100644
--- a/eclass/toolchain.eclass
+++ b/eclass/toolchain-r1.eclass
@@ -1,15 +1,16 @@
-# Copyright 1999-2012 Gentoo Foundation
+# Copyright 1999-2013 Gentoo Foundation
 # Distributed under the terms of the GNU General Public License v2
-# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain.eclass,v 1.532 2012/03/22 06:07:08 dirtyepic Exp $
-#
+# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain.eclass,v 1.601 2013/10/15 05:36:26 dirtyepic Exp $
+
 # Maintainer: Toolchain Ninjas <toolchain@gentoo.org>
 
 #---->> eclass stuff <<----
+DESCRIPTION="The GNU Compiler Collection"
 HOMEPAGE="http://gcc.gnu.org/"
 LICENSE="GPL-2 LGPL-2.1"
 RESTRICT="strip" # cross-compilers need controlled stripping
 
-inherit eutils versionator libtool toolchain-funcs flag-o-matic gnuconfig multilib fixheadtails pax-utils autotools
+inherit eutils versionator libtool toolchain-funcs flag-o-matic gnuconfig multilib fixheadtails pax-utils
 
 if [[ ${PV} == *_pre9999* ]] ; then
 	EGIT_REPO_URI="git://gcc.gnu.org/git/gcc.git"
@@ -23,9 +24,9 @@ if [[ ${PV} == *_pre9999* ]] ; then
 	inherit git-2
 fi
 
-DESCRIPTION="The GNU Compiler Collection"
-
 FEATURES=${FEATURES/multilib-strict/}
+
+EXPORT_FUNCTIONS pkg_setup src_unpack src_compile src_test src_install pkg_postinst pkg_postrm
 #----<< eclass stuff >>----
 
 #---->> globals <<----
@@ -35,11 +36,19 @@ if [[ ${CTARGET} = ${CHOST} ]] ; then
 		export CTARGET=${CATEGORY/cross-}
 	fi
 fi
+: ${TARGET_ABI:=${ABI}}
+: ${TARGET_MULTILIB_ABIS:=${MULTILIB_ABIS}}
+: ${TARGET_DEFAULT_ABI:=${DEFAULT_ABI}}
+
 is_crosscompile() {
 	[[ ${CHOST} != ${CTARGET} ]]
 }
 
-tc_version_is_at_least() { version_is_at_least "$1" "${2:-${GCC_RELEASE_VER}}" ; }
+# General purpose version check.  Without a second arg matches up to minor version (x.x.x)
+# (ie. 4.6.0_pre9999 matches 4 or 4.6 or 4.6.0 but not 4.6.1)
+tc_version_is_at_least() { 
+	version_is_at_least "$1" "${2:-${GCC_RELEASE_VER}}"
+}
 
 GCC_PV=${TOOLCHAIN_GCC_PV:-${PV}}
 GCC_PVR=${GCC_PV}
@@ -49,7 +58,8 @@ GCC_BRANCH_VER=$(get_version_component_range 1-2 ${GCC_PV})
 GCCMAJOR=$(get_version_component_range 1 ${GCC_PV})
 GCCMINOR=$(get_version_component_range 2 ${GCC_PV})
 GCCMICRO=$(get_version_component_range 3 ${GCC_PV})
-[[ ${BRANCH_UPDATE-notset} == "notset" ]] && BRANCH_UPDATE=$(get_version_component_range 4 ${GCC_PV})
+[[ ${BRANCH_UPDATE-notset} == "notset" ]] && \
+	BRANCH_UPDATE=$(get_version_component_range 4 ${GCC_PV})
 
 # According to gcc/c-cppbuiltin.c, GCC_CONFIG_VER MUST match this regex.
 # ([^0-9]*-)?[0-9]+[.][0-9]+([.][0-9]+)?([- ].*)?
@@ -59,6 +69,7 @@ GCC_CONFIG_VER=${GCC_CONFIG_VER:-$(replace_version_separator 3 '-' ${GCC_PV})}
 if [[ ${GCC_PV} != ${GCC_PV/_pre/-} ]] ; then
 	PRERELEASE=${GCC_PV/_pre/-}
 fi
+
 # make _alpha and _beta ebuilds automatically use a snapshot
 if [[ ${GCC_PV} == *_alpha* ]] ; then
 	SNAPSHOT=${GCC_BRANCH_VER}-${GCC_PV##*_alpha}
@@ -67,91 +78,119 @@ elif [[ ${GCC_PV} == *_beta* ]] ; then
 elif [[ ${GCC_PV} == *_rc* ]] ; then
 	SNAPSHOT=${GCC_PV%_rc*}-RC-${GCC_PV##*_rc}
 fi
-export GCC_FILESDIR=${GCC_FILESDIR:-${FILESDIR}}
 
+export GCC_FILESDIR=${GCC_FILESDIR:-${FILESDIR}}
 PREFIX=${TOOLCHAIN_PREFIX:-/usr}
 
-LIBPATH=${TOOLCHAIN_LIBPATH:-${PREFIX}/lib/gcc/${CTARGET}/${GCC_CONFIG_VER}}
+if tc_version_is_at_least 3.4.0 ; then
+	LIBPATH=${TOOLCHAIN_LIBPATH:-${PREFIX}/lib/gcc/${CTARGET}/${GCC_CONFIG_VER}}
+else
+	LIBPATH=${TOOLCHAIN_LIBPATH:-${PREFIX}/lib/gcc-lib/${CTARGET}/${GCC_CONFIG_VER}}
+fi
 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/\.*/}}
-
 #----<< globals >>----
 
 #---->> SLOT+IUSE logic <<----
-IUSE="build multislot nls nptl test vanilla"
+IUSE="multislot nls nptl regression-test vanilla"
 
 if [[ ${PN} != "kgcc64" && ${PN} != gcc-* ]] ; then
-	IUSE+=" altivec cxx fortran nocxx"
+	IUSE+=" altivec cxx fortran"
 	[[ -n ${PIE_VER} ]] && IUSE+=" nopie"
 	[[ -n ${HTB_VER} ]] && IUSE+=" boundschecking"
 	[[ -n ${D_VER}   ]] && IUSE+=" d"
 	[[ -n ${SPECS_VER} ]] && IUSE+=" nossp"
-	IUSE+=" bootstrap doc gcj gtk hardened multilib objc"
-	IUSE+=" objc-gc mudflap objc++ openmp fixed-point graphite go"
-	[[ ${GCC_BRANCH_VER} == 4.5 ]] && IUSE+=" lto"
+	tc_version_is_at_least 3 && IUSE+=" doc gcj gtk hardened multilib objc"
+	tc_version_is_at_least 4.0 && IUSE+=" objc-gc mudflap"
+	tc_version_is_at_least 4.1 && IUSE+=" libssp objc++"
+	tc_version_is_at_least 4.2 && IUSE+=" openmp"
+	tc_version_is_at_least 4.3 && IUSE+=" fixed-point"
+	tc_version_is_at_least 4.6 && IUSE+=" graphite"
+	tc_version_is_at_least 4.6 && IUSE+=" lto"
+	tc_version_is_at_least 4.7 && IUSE+=" go"
 fi
 
 # Support upgrade paths here or people get pissed
 if use multislot ; then
-	SLOT="${CTARGET}-${GCC_CONFIG_VER}"
-elif is_crosscompile; then
-	SLOT="${CTARGET}-${GCC_BRANCH_VER}"
+	SLOT="${GCC_CONFIG_VER}"
 else
 	SLOT="${GCC_BRANCH_VER}"
 fi
 #----<< SLOT+IUSE logic >>----
 
 #---->> DEPEND <<----
-
 RDEPEND="sys-libs/zlib
-	!build? (
-		nls? ( sys-devel/gettext )
-	)"
-RDEPEND+=" virtual/libiconv"
-RDEPEND+=" >=dev-libs/mpc-0.8.1"
-GMP_MPFR_DEPS=">=dev-libs/gmp-4.3.2 >=dev-libs/mpfr-2.4.2"
-RDEPEND+=" ${GMP_MPFR_DEPS}"
-in_iuse lto && RDEPEND+=" lto? ( || ( >=dev-libs/elfutils-0.143 dev-libs/libelf ) )"
+	nls? ( sys-devel/gettext )"
+
+tc_version_is_at_least 3 && RDEPEND+=" virtual/libiconv"
+
+if tc_version_is_at_least 4 ; then
+	GMP_MPFR_DEPS=">=dev-libs/gmp-4.3.2 >=dev-libs/mpfr-2.4.2"
+	if tc_version_is_at_least 4.3 ; then
+		RDEPEND+=" ${GMP_MPFR_DEPS}"
+	elif in_iuse fortran ; then
+		RDEPEND+=" fortran? ( ${GMP_MPFR_DEPS} )"
+	fi
+fi
+
+tc_version_is_at_least 4.5 && RDEPEND+=" >=dev-libs/mpc-0.8.1"
+
 if in_iuse graphite ; then
-	RDEPEND+="
-	    graphite? (
-	        >=dev-libs/cloog-ppl-0.15.10
-	        >=dev-libs/ppl-0.11
-	    )"
+	if tc_version_is_at_least 4.8 ; then
+		RDEPEND+="
+			graphite? (
+				>=dev-libs/cloog-0.18.0
+				>=dev-libs/isl-0.11.1
+			)"
+	else
+		RDEPEND+="
+			graphite? (
+				>=dev-libs/cloog-ppl-0.15.10
+				>=dev-libs/ppl-0.11
+			)"
+	fi
 fi
 
 DEPEND="${RDEPEND}
-	>=sys-apps/texinfo-4.8
 	>=sys-devel/bison-1.875
 	>=sys-devel/flex-2.5.4
-	test? (
+	regression-test? (
 		>=dev-util/dejagnu-1.4.4
 		>=sys-devel/autogen-5.5.4
 	)"
+
 if in_iuse gcj ; then
+	GCJ_DEPS=">=media-libs/libart_lgpl-2.1"
 	GCJ_GTK_DEPS="
 		x11-libs/libXt
 		x11-libs/libX11
 		x11-libs/libXtst
 		x11-proto/xproto
 		x11-proto/xextproto
-		=x11-libs/gtk+-2*"
-	GCJ_GTK_DEPS+=" x11-libs/pango"
-	GCJ_DEPS=">=media-libs/libart_lgpl-2.1"
-	GCJ_DEPS+=" app-arch/zip app-arch/unzip"
+		=x11-libs/gtk+-2*
+		virtual/pkgconfig
+		amd64? ( multilib? (
+			app-emulation/emul-linux-x86-gtklibs
+			app-emulation/emul-linux-x86-xlibs
+		) )
+	"
+	tc_version_is_at_least 3.4 && GCJ_GTK_DEPS+=" x11-libs/pango"
+	tc_version_is_at_least 4.2 && GCJ_DEPS+=" app-arch/zip app-arch/unzip"
 	DEPEND+=" gcj? ( gtk? ( ${GCJ_GTK_DEPS} ) ${GCJ_DEPS} )"
 fi
 
-PDEPEND=">=sys-devel/gcc-config-1.5"
-
+PDEPEND=">=sys-devel/gcc-config-1.7"
 #----<< DEPEND >>----
 
 #---->> S + SRC_URI essentials <<----
@@ -177,11 +216,10 @@ S=$(
 # can be altered by setting the following:
 #
 #	SNAPSHOT
-#			If set, this variable signals that we should be using a snapshot
-#			of gcc from ftp://sources.redhat.com/pub/gcc/snapshots/. It is
-#			expected to be in the format "YYYY-MM-DD". Note that if the ebuild
-#			has a _pre suffix, this variable is ignored and the prerelease
-#			tarball is used instead.
+#			If set, this variable signals that we should be using a snapshot of
+#			gcc. It is expected to be in the format "YYYY-MM-DD". Note that if
+#			the ebuild has a _pre suffix, this variable is ignored and the
+#			prerelease tarball is used instead.
 #
 #	BRANCH_UPDATE
 #			If set, this variable signals that we should be using the main
@@ -247,7 +285,7 @@ get_gcc_src_uri() {
 	if [[ -n ${PRERELEASE} ]] ; then
 		GCC_SRC_URI="ftp://gcc.gnu.org/pub/gcc/prerelease-${PRERELEASE}/gcc-${PRERELEASE}.tar.bz2"
 	elif [[ -n ${SNAPSHOT} ]] ; then
-		GCC_SRC_URI="ftp://sources.redhat.com/pub/gcc/snapshots/${SNAPSHOT}/gcc-${SNAPSHOT}.tar.bz2"
+		GCC_SRC_URI="ftp://gcc.gnu.org/pub/gcc/snapshots/${SNAPSHOT}/gcc-${SNAPSHOT}.tar.bz2"
 	elif [[ ${PV} != *9999* ]] ; then
 		GCC_SRC_URI="mirror://gnu/gcc/gcc-${GCC_PV}/gcc-${GCC_RELEASE_VER}.tar.bz2"
 		# we want all branch updates to be against the main release
@@ -255,8 +293,10 @@ get_gcc_src_uri() {
 			GCC_SRC_URI+=" $(gentoo_urls gcc-${GCC_RELEASE_VER}-branch-update-${BRANCH_UPDATE}.patch.bz2)"
 	fi
 
-	[[ -n ${UCLIBC_VER} ]] && GCC_SRC_URI+=" $(gentoo_urls gcc-${UCLIBC_GCC_VER}-uclibc-patches-${UCLIBC_VER}.tar.bz2)"
-	[[ -n ${PATCH_VER} ]] && GCC_SRC_URI+=" $(gentoo_urls gcc-${PATCH_GCC_VER}-patches-${PATCH_VER}.tar.bz2)"
+	[[ -n ${UCLIBC_VER} ]] && \
+		GCC_SRC_URI+=" $(gentoo_urls gcc-${UCLIBC_GCC_VER}-uclibc-patches-${UCLIBC_VER}.tar.bz2)"
+	[[ -n ${PATCH_VER} ]] && \
+		GCC_SRC_URI+=" $(gentoo_urls gcc-${PATCH_GCC_VER}-patches-${PATCH_VER}.tar.bz2)"
 
 	# strawberry pie, Cappuccino and a Gauloises (it's a good thing)
 	[[ -n ${PIE_VER} ]] && \
@@ -264,7 +304,8 @@ get_gcc_src_uri() {
 		GCC_SRC_URI+=" $(gentoo_urls ${PIE_CORE})"
 
 	# gcc minispec for the hardened gcc 4 compiler
-	[[ -n ${SPECS_VER} ]] && GCC_SRC_URI+=" $(gentoo_urls gcc-${SPECS_GCC_VER}-specs-${SPECS_VER}.tar.bz2)"
+	[[ -n ${SPECS_VER} ]] && \
+		GCC_SRC_URI+=" $(gentoo_urls gcc-${SPECS_GCC_VER}-specs-${SPECS_VER}.tar.bz2)"
 
 	# gcc bounds checking patch
 	if [[ -n ${HTB_VER} ]] ; then
@@ -276,10 +317,15 @@ get_gcc_src_uri() {
 			)"
 	fi
 
-	[[ -n ${D_VER} ]] && GCC_SRC_URI+=" d? ( mirror://sourceforge/dgcc/gdc-${D_VER}-src.tar.bz2 )"
+	[[ -n ${D_VER} ]] && \
+		GCC_SRC_URI+=" d? ( mirror://sourceforge/dgcc/gdc-${D_VER}-src.tar.bz2 )"
 
-	if [[ ${PN} != "kgcc64" && ${PN} != gcc-* ]] ; then
-		GCC_SRC_URI+=" gcj? ( ftp://sourceware.org/pub/java/ecj-4.5.jar )"
+	if in_iuse gcj ; then
+		if tc_version_is_at_least 4.5 ; then
+			GCC_SRC_URI+=" gcj? ( ftp://sourceware.org/pub/java/ecj-4.5.jar )"
+		elif tc_version_is_at_least 4.3 ; then
+			GCC_SRC_URI+=" gcj? ( ftp://sourceware.org/pub/java/ecj-4.3.jar )"
+		fi
 	fi
 
 	echo "${GCC_SRC_URI}"
@@ -297,6 +343,85 @@ get_make_var() {
 }
 XGCC() { get_make_var GCC_FOR_TARGET ; }
 
+# The gentoo piessp patches allow for 3 configurations:
+# 1) PIE+SSP by default
+# 2) PIE by default
+# 3) SSP by default
+hardened_gcc_works() {
+	if [[ $1 == "pie" ]] ; then
+		# $gcc_cv_ld_pie is unreliable as it simply take the output of
+		# `ld --help | grep -- -pie`, that reports the option in all cases, also if
+		# the loader doesn't actually load the resulting executables.
+		# To avoid breakage, blacklist FreeBSD here at least
+		[[ ${CTARGET} == *-freebsd* ]] && return 1
+
+		want_pie || return 1
+		use_if_iuse nopie && return 1
+		hardened_gcc_is_stable pie
+		return $?
+	elif [[ $1 == "ssp" ]] ; then
+		[[ -n ${SPECS_VER} ]] || return 1
+		use_if_iuse nossp && return 1
+		hardened_gcc_is_stable ssp
+		return $?
+	else
+		# laziness ;)
+		hardened_gcc_works pie || return 1
+		hardened_gcc_works ssp || return 1
+		return 0
+	fi
+}
+
+hardened_gcc_is_stable() {
+	local tocheck
+	if [[ $1 == "pie" ]] ; then
+		if [[ ${CTARGET} == *-uclibc* ]] ; then
+			tocheck=${PIE_UCLIBC_STABLE}
+		else
+			tocheck=${PIE_GLIBC_STABLE}
+		fi
+	elif [[ $1 == "ssp" ]] ; then
+		if [[ ${CTARGET} == *-uclibc* ]] ; then
+			tocheck=${SSP_UCLIBC_STABLE}
+		else
+			tocheck=${SSP_STABLE}
+		fi
+	else
+		die "hardened_gcc_stable needs to be called with pie or ssp"
+	fi
+
+	has $(tc-arch) ${tocheck} && return 0
+	return 1
+}
+
+want_pie() {
+	! use hardened && [[ -n ${PIE_VER} ]] && use nopie && return 1
+	[[ -n ${PIE_VER} ]] && [[ -n ${SPECS_VER} ]] && return 0
+	tc_version_is_at_least 4.3.2 && return 1
+	[[ -z ${PIE_VER} ]] && return 1
+	use !nopie && return 0
+	return 1
+}
+
+want_minispecs() {
+	if tc_version_is_at_least 4.3.2 && use hardened ; then
+		if ! want_pie ; then
+			ewarn "PIE_VER or SPECS_VER is not defined in the GCC ebuild."
+		elif use vanilla ; then
+			ewarn "You will not get hardened features if you have the vanilla USE-flag."
+		elif use nopie && use nossp ; then
+			ewarn "You will not get hardened features if you have the nopie and nossp USE-flag."
+		elif ! hardened_gcc_works ; then
+			ewarn "Your $(tc-arch) arch is not supported."
+		else
+			return 0
+		fi
+		ewarn "Hope you know what you are doing. Hardened will not work."
+		return 0
+	fi
+	return 1
+}
+
 # This is to make sure we don't accidentally try to enable support for a
 # language that doesnt exist. GCC 3.4 supports f77, while 4.0 supports f95, etc.
 #
@@ -307,58 +432,109 @@ gcc-lang-supported() {
 	[[ -z ${TOOLCHAIN_ALLOWED_LANGS} ]] && return 0
 	has $1 ${TOOLCHAIN_ALLOWED_LANGS}
 }
-
 #----<< support checks >>----
 
 #---->> specs + env.d logic <<----
 
+# configure to build with the hardened GCC specs as the default
+make_gcc_hard() {
+	# defaults to enable for all hardened toolchains
+	local gcc_hard_flags="-DEFAULT_RELRO -DEFAULT_BIND_NOW"
+
+	if hardened_gcc_works ; then
+		einfo "Updating gcc to use automatic PIE + SSP building ..."
+		gcc_hard_flags+=" -DEFAULT_PIE_SSP"
+	elif hardened_gcc_works pie ; then
+		einfo "Updating gcc to use automatic PIE building ..."
+		ewarn "SSP has not been enabled by default"
+		gcc_hard_flags+=" -DEFAULT_PIE"
+	elif hardened_gcc_works ssp ; then
+		einfo "Updating gcc to use automatic SSP building ..."
+		ewarn "PIE has not been enabled by default"
+		gcc_hard_flags+=" -DEFAULT_SSP"
+	else
+		# do nothing if hardened isnt supported, but dont die either
+		ewarn "hardened is not supported for this arch in this gcc version"
+		ebeep
+		return 0
+	fi
+
+	sed -i \
+		-e "/^HARD_CFLAGS = /s|=|= ${gcc_hard_flags} |" \
+		"${S}"/gcc/Makefile.in || die
+
+	# rebrand to make bug reports easier
+	BRANDING_GCC_PKGVERSION=${BRANDING_GCC_PKGVERSION/Gentoo/Gentoo Hardened}
+}
+
 create_gcc_env_entry() {
 	dodir /etc/env.d/gcc
 	local gcc_envd_base="/etc/env.d/gcc/${CTARGET}-${GCC_CONFIG_VER}"
 
+	local gcc_specs_file
+	local gcc_envd_file="${D}${gcc_envd_base}"
 	if [[ -z $1 ]] ; then
-		gcc_envd_file="${D}${gcc_envd_base}"
 		# I'm leaving the following commented out to remind me that it
 		# was an insanely -bad- idea. Stuff broke. GCC_SPECS isnt unset
 		# on chroot or in non-toolchain.eclass gcc ebuilds!
 		#gcc_specs_file="${LIBPATH}/specs"
 		gcc_specs_file=""
 	else
-		gcc_envd_file="${D}${gcc_envd_base}-$1"
+		gcc_envd_file+="-$1"
 		gcc_specs_file="${LIBPATH}/$1.specs"
 	fi
 
-	# phase PATH/ROOTPATH out ...
-	echo "PATH=\"${BINPATH}\"" > ${gcc_envd_file}
-	echo "ROOTPATH=\"${BINPATH}\"" >> ${gcc_envd_file}
-	echo "GCC_PATH=\"${BINPATH}\"" >> ${gcc_envd_file}
-
 	# We want to list the default ABI's LIBPATH first so libtool
 	# searches that directory first.  This is a temporary
 	# workaround for libtool being stupid and using .la's from
 	# conflicting ABIs by using the first one in the search path
-	local abi=${DEFAULT_ABI}
-	local MULTIDIR=$($(XGCC) $(get_abi_CFLAGS ${abi}) --print-multi-directory)
-	local LDPATH=${LIBPATH}
-	[[ ${MULTIDIR} != "." ]] && LDPATH+=/${MULTIDIR}
-	for abi in $(get_all_abis) ; do
-		[[ ${abi} == ${DEFAULT_ABI} ]] && continue
-
-		MULTIDIR=$($(XGCC) $(get_abi_CFLAGS ${abi}) --print-multi-directory)
-		LDPATH+=:${LIBPATH}
-		[[ ${MULTIDIR} != "." ]] && LDPATH+=/${MULTIDIR}
-	done
-
-	echo "LDPATH=\"${LDPATH}\"" >> ${gcc_envd_file}
-	echo "MANPATH=\"${DATAPATH}/man\"" >> ${gcc_envd_file}
-	echo "INFOPATH=\"${DATAPATH}/info\"" >> ${gcc_envd_file}
-	echo "STDCXX_INCDIR=\"${STDCXX_INCDIR##*/}\"" >> ${gcc_envd_file}
+	local ldpaths mosdirs
+	if tc_version_is_at_least 3.2 ; then
+		local mdir mosdir abi ldpath
+		for abi in $(get_all_abis TARGET) ; do
+			mdir=$($(XGCC) $(get_abi_CFLAGS ${abi}) --print-multi-directory)
+			ldpath=${LIBPATH}
+			[[ ${mdir} != "." ]] && ldpath+="/${mdir}"
+			ldpaths="${ldpath}${ldpaths:+:${ldpaths}}"
+
+			mosdir=$($(XGCC) $(get_abi_CFLAGS ${abi}) -print-multi-os-directory)
+			mosdirs="${mosdir}${mosdirs:+:${mosdirs}}"
+		done
+	else
+		# Older gcc's didn't do multilib, so logic is simple.
+		ldpaths=${LIBPATH}
+	fi
 
-	is_crosscompile && echo "CTARGET=${CTARGET}" >> ${gcc_envd_file}
+	cat <<-EOF > ${gcc_envd_file}
+	PATH="${BINPATH}"
+	ROOTPATH="${BINPATH}"
+	GCC_PATH="${BINPATH}"
+	LDPATH="${ldpaths}"
+	MANPATH="${DATAPATH}/man"
+	INFOPATH="${DATAPATH}/info"
+	STDCXX_INCDIR="${STDCXX_INCDIR##*/}"
+	CTARGET="${CTARGET}"
+	GCC_SPECS="${gcc_specs_file}"
+	MULTIOSDIRS="${mosdirs}"
+	EOF
+}
 
-	# Set which specs file to use
-	[[ -n ${gcc_specs_file} ]] && echo "GCC_SPECS=\"${gcc_specs_file}\"" >> ${gcc_envd_file}
+setup_minispecs_gcc_build_specs() {
+	# Setup the "build.specs" file for gcc 4.3 to use when building.
+	if hardened_gcc_works pie ; then
+		cat "${WORKDIR}"/specs/pie.specs >> "${WORKDIR}"/build.specs
+	fi
+	if hardened_gcc_works ssp ; then
+		for s in ssp sspall ; do
+			cat "${WORKDIR}"/specs/${s}.specs >> "${WORKDIR}"/build.specs
+		done
+	fi
+	for s in nostrict znow ; do
+		cat "${WORKDIR}"/specs/${s}.specs >> "${WORKDIR}"/build.specs
+	done
+	export GCC_SPECS="${WORKDIR}"/build.specs
 }
+
 copy_minispecs_gcc_specs() {
 	# setup the hardenedno* specs files and the vanilla specs file.
 	if hardened_gcc_works ; then
@@ -373,20 +549,23 @@ copy_minispecs_gcc_specs() {
 	create_gcc_env_entry vanilla
 	insinto ${LIBPATH}
 	doins "${WORKDIR}"/specs/*.specs || die "failed to install specs"
+	# Build system specs file which, if it exists, must be a complete set of
+	# specs as it completely and unconditionally overrides the builtin specs.
+	if ! tc_version_is_at_least 4.4 ; then
+		$(XGCC) -dumpspecs > "${WORKDIR}"/specs/specs
+		cat "${WORKDIR}"/build.specs >> "${WORKDIR}"/specs/specs
+		doins "${WORKDIR}"/specs/specs || die "failed to install the specs file"
+	fi
 }
 
 #----<< specs + env.d logic >>----
 
 #---->> pkg_* <<----
-
-pkg_setup() {
-
-	# Setup variables which would normally be in the profile
-	if is_crosscompile ; then
-		multilib_env ${CTARGET}
-		if ! is_multilib ; then
-			MULTILIB_ABIS=${DEFAULT_ABI}
-		fi
+toolchain_pkg_setup() {
+	if [[ -n ${PRERELEASE}${SNAPSHOT} || ${PV} == *9999* ]] &&
+	   [[ -z ${I_PROMISE_TO_SUPPLY_PATCHES_WITH_BUGS} ]] ; 	then
+		die "Please \`export I_PROMISE_TO_SUPPLY_PATCHES_WITH_BUGS=1\` or define it" \
+			"in your make.conf if you want to use this version."
 	fi
 
 	# we dont want to use the installed compiler's specs to build gcc!
@@ -398,14 +577,12 @@ pkg_setup() {
 		use_if_iuse gcj && ewarn 'GCJ requires a C++ compiler, disabled due to USE="-cxx"'
 	fi
 
-	unset LANGUAGES #265283
-}
+	want_minispecs
 
-pkg_preinst() {
-	:
+	unset LANGUAGES #265283
 }
 
-pkg_postinst() {
+toolchain_pkg_postinst() {
 	do_gcc_config
 
 	if ! is_crosscompile ; then
@@ -417,36 +594,27 @@ pkg_postinst() {
 		ewarn "major versions (like 4.2 to 4.3):"
 		ewarn "http://www.gentoo.org/doc/en/gcc-upgrading.xml"
 		echo
-	fi
 
-	if ! is_crosscompile ; then
-		# hack to prevent collisions between SLOT
-		[[ ! -d ${ROOT}/$(get_libdir)/rcscripts/awk ]] \
-			&& mkdir -p "${ROOT}"/$(get_libdir)/rcscripts/awk
-		[[ ! -d ${ROOT}/sbin ]] \
-			&& mkdir -p "${ROOT}"/sbin
-		cp "${ROOT}/${DATAPATH}"/fixlafiles.awk "${ROOT}"/$(get_libdir)/rcscripts/awk/ || die "installing fixlafiles.awk"
-		cp "${ROOT}/${DATAPATH}"/fix_libtool_files.sh "${ROOT}"/sbin/ || die "installing fix_libtool_files.sh"
-
-		[[ ! -d ${ROOT}/usr/bin ]] \
-			&& mkdir -p "${ROOT}"/usr/bin
+		# Clean up old paths
+		rm -f "${ROOT}"/*/rcscripts/awk/fixlafiles.awk "${ROOT}"/sbin/fix_libtool_files.sh
+		rmdir "${ROOT}"/*/rcscripts{/awk,} 2>/dev/null
+
+		mkdir -p "${ROOT}"/usr/{share/gcc-data,sbin,bin}
+		cp "${ROOT}/${DATAPATH}"/fixlafiles.awk "${ROOT}"/usr/share/gcc-data/ || die
+		cp "${ROOT}/${DATAPATH}"/fix_libtool_files.sh "${ROOT}"/usr/sbin/ || die
+
 		# Since these aren't critical files and portage sucks with
 		# handling of binpkgs, don't require these to be found
-		for x in "${ROOT}/${DATAPATH}"/c{89,99} ; do
-			if [[ -e ${x} ]]; then
-				cp ${x} "${ROOT}"/usr/bin/ || die "installing c89/c99"
-			fi
-		done
+		cp "${ROOT}/${DATAPATH}"/c{89,99} "${ROOT}"/usr/bin/ 2>/dev/null
 	fi
-}
 
-pkg_prerm() {
-	# Don't let these files be uninstalled #87647
-	touch -c "${ROOT}"/sbin/fix_libtool_files.sh \
-		"${ROOT}"/$(get_libdir)/rcscripts/awk/fixlafiles.awk
+	if use regression-test ; then
+		elog "Testsuite results have been installed into /usr/share/doc/${PF}/testsuite"
+		echo
+	fi
 }
 
-pkg_postrm() {
+toolchain_pkg_postrm() {
 	# to make our lives easier (and saner), we do the fix_libtool stuff here.
 	# rather than checking SLOT's and trying in upgrade paths, we just see if
 	# the common libstdc++.la exists in the ${LIBPATH} of the gcc that we are
@@ -470,10 +638,10 @@ pkg_postrm() {
 		do_gcc_config
 
 		einfo "Running 'fix_libtool_files.sh ${GCC_RELEASE_VER}'"
-		/sbin/fix_libtool_files.sh ${GCC_RELEASE_VER}
+		/usr/sbin/fix_libtool_files.sh ${GCC_RELEASE_VER}
 		if [[ -n ${BRANCH_UPDATE} ]] ; then
 			einfo "Running 'fix_libtool_files.sh ${GCC_RELEASE_VER}-${BRANCH_UPDATE}'"
-			/sbin/fix_libtool_files.sh ${GCC_RELEASE_VER}-${BRANCH_UPDATE}
+			/usr/sbin/fix_libtool_files.sh ${GCC_RELEASE_VER}-${BRANCH_UPDATE}
 		fi
 	fi
 
@@ -482,13 +650,175 @@ pkg_postrm() {
 
 #---->> pkg_* <<----
 
-#---->> some function for src_* <<----
+#---->> src_* <<----
 
 guess_patch_type_in_dir() {
 	[[ -n $(ls "$1"/*.bz2 2>/dev/null) ]] \
 		&& EPATCH_SUFFIX="patch.bz2" \
 		|| EPATCH_SUFFIX="patch"
 }
+
+do_gcc_rename_java_bins() {
+	# bug #139918 - conflict between gcc and java-config-2 for ownership of
+	# /usr/bin/rmi{c,registry}.	 Done with mv & sed rather than a patch
+	# because patches would be large (thanks to the rename of man files),
+	# and it's clear from the sed invocations that all that changes is the
+	# rmi{c,registry} names to grmi{c,registry} names.
+	# Kevin F. Quinn 2006-07-12
+	einfo "Renaming jdk executables rmic and rmiregistry to grmic and grmiregistry."
+	# 1) Move the man files if present (missing prior to gcc-3.4)
+	for manfile in rmic rmiregistry ; do
+		[[ -f ${S}/gcc/doc/${manfile}.1 ]] || continue
+		mv "${S}"/gcc/doc/${manfile}.1 "${S}"/gcc/doc/g${manfile}.1
+	done
+	# 2) Fixup references in the docs if present (mission prior to gcc-3.4)
+	for jfile in gcc/doc/gcj.info gcc/doc/grmic.1 gcc/doc/grmiregistry.1 gcc/java/gcj.texi ; do
+		[[ -f ${S}/${jfile} ]] || continue
+		sed -i -e 's:rmiregistry:grmiregistry:g' "${S}"/${jfile} ||
+			die "Failed to fixup file ${jfile} for rename to grmiregistry"
+		sed -i -e 's:rmic:grmic:g' "${S}"/${jfile} ||
+			die "Failed to fixup file ${jfile} for rename to grmic"
+	done
+	# 3) Fixup Makefiles to build the changed executable names
+	#	 These are present in all 3.x versions, and are the important bit
+	#	 to get gcc to build with the new names.
+	for jfile in libjava/Makefile.am libjava/Makefile.in gcc/java/Make-lang.in ; do
+		sed -i -e 's:rmiregistry:grmiregistry:g' "${S}"/${jfile} ||
+			die "Failed to fixup file ${jfile} for rename to grmiregistry"
+		# Careful with rmic on these files; it's also the name of a directory
+		# which should be left unchanged.  Replace occurrences of 'rmic$',
+		# 'rmic_' and 'rmic '.
+		sed -i -e 's:rmic\([$_ ]\):grmic\1:g' "${S}"/${jfile} ||
+			die "Failed to fixup file ${jfile} for rename to grmic"
+	done
+}
+
+toolchain_src_unpack() {
+	[[ -z ${UCLIBC_VER} ]] && [[ ${CTARGET} == *-uclibc* ]] && \
+		die "Sorry, this version does not support uClibc"
+
+	if [[ ${PV} == *9999* ]]; then
+		git-2_src_unpack
+	else
+		gcc_quick_unpack
+	fi
+
+	export BRANDING_GCC_PKGVERSION="Gentoo ${GCC_PVR}"
+	cd "${S}"
+
+	if ! use vanilla ; then
+		if [[ -n ${PATCH_VER} ]] ; then
+			guess_patch_type_in_dir "${WORKDIR}"/patch
+			EPATCH_MULTI_MSG="Applying Gentoo patches ..." \
+			epatch "${WORKDIR}"/patch
+			BRANDING_GCC_PKGVERSION="${BRANDING_GCC_PKGVERSION} p${PATCH_VER}"
+		fi
+		if [[ -n ${UCLIBC_VER} ]] ; then
+			guess_patch_type_in_dir "${WORKDIR}"/uclibc
+			EPATCH_MULTI_MSG="Applying uClibc patches ..." \
+			epatch "${WORKDIR}"/uclibc
+		fi
+	fi
+	do_gcc_HTB_patches
+	do_gcc_PIE_patches
+	epatch_user
+
+	use hardened && make_gcc_hard
+
+	# install the libstdc++ python into the right location
+	# http://gcc.gnu.org/PR51368
+	if tc_version_is_at_least 4.5 && ! tc_version_is_at_least 4.7 ; then
+		sed -i \
+			'/^pythondir =/s:=.*:= $(datadir)/python:' \
+			"${S}"/libstdc++-v3/python/Makefile.in || die
+	fi
+
+	# make sure the pkg config files install into multilib dirs.
+	# since we configure with just one --libdir, we can't use that
+	# (as gcc itself takes care of building multilibs).  #435728
+	find "${S}" -name Makefile.in \
+		-exec sed -i '/^pkgconfigdir/s:=.*:=$(toolexeclibdir)/pkgconfig:' {} +
+
+	# No idea when this first started being fixed, but let's go with 4.3.x for now
+	if ! tc_version_is_at_least 4.3 ; then
+		fix_files=""
+		for x in contrib/test_summary libstdc++-v3/scripts/check_survey.in ; do
+			[[ -e ${x} ]] && fix_files="${fix_files} ${x}"
+		done
+		ht_fix_file ${fix_files} */configure *.sh */Makefile.in
+	fi
+
+	setup_multilib_osdirnames
+	gcc_version_patch
+
+	if tc_version_is_at_least 4.1 ; then
+		if [[ -n ${SNAPSHOT} || -n ${PRERELEASE} ]] ; then
+			# BASE-VER must be a three-digit version number
+			# followed by an optional -pre string
+			#   eg. 4.5.1, 4.6.2-pre20120213, 4.7.0-pre9999
+			# If BASE-VER differs from ${PV/_/-} then libraries get installed in
+			# the wrong directory.
+			echo ${PV/_/-} > "${S}"/gcc/BASE-VER
+		fi
+	fi
+
+	# >= gcc-4.3 doesn't bundle ecj.jar, so copy it
+	if tc_version_is_at_least 4.3 && use gcj ; then
+		if tc_version_is_at_least 4.5 ; then
+			einfo "Copying ecj-4.5.jar"
+			cp -pPR "${DISTDIR}/ecj-4.5.jar" "${S}/ecj.jar" || die
+		else
+			einfo "Copying ecj-4.3.jar"
+			cp -pPR "${DISTDIR}/ecj-4.3.jar" "${S}/ecj.jar" || die
+		fi
+	fi
+
+	# disable --as-needed from being compiled into gcc specs
+	# natively when using a gcc version < 3.4.4
+	# http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14992
+	if ! tc_version_is_at_least 3.4.4 ; then
+		sed -i -e s/HAVE_LD_AS_NEEDED/USE_LD_AS_NEEDED/g "${S}"/gcc/config.in
+	fi
+
+	# In gcc 3.3.x and 3.4.x, rename the java bins to gcc-specific names
+	# in line with gcc-4.
+	if tc_version_is_at_least 3.3 && ! tc_version_is_at_least 4.0 ; then
+		do_gcc_rename_java_bins
+	fi
+
+	# Prevent libffi from being installed
+	if tc_version_is_at_least 3.0 && ! tc_version_is_at_least 4.8 ; then
+		sed -i -e 's/\(install.*:\) install-.*recursive/\1/' "${S}"/libffi/Makefile.in || die
+		sed -i -e 's/\(install-data-am:\).*/\1/' "${S}"/libffi/include/Makefile.in || die
+	fi
+
+	# Fixup libtool to correctly generate .la files with portage
+	elibtoolize --portage --shallow --no-uclibc
+
+	gnuconfig_update
+
+	# update configure files
+	local f
+	einfo "Fixing misc issues in configure files"
+	# TODO - check if we can drop this now that we don't gen info files
+	tc_version_is_at_least 4.1 && epatch "${GCC_FILESDIR}"/gcc-configure-texinfo.patch
+	for f in $(grep -l 'autoconf version 2.13' $(find "${S}" -name configure)) ; do
+		ebegin "  Updating ${f/${S}\/} [LANG]"
+		patch "${f}" "${GCC_FILESDIR}"/gcc-configure-LANG.patch >& "${T}"/configure-patch.log \
+			|| eerror "Please file a bug about this"
+		eend $?
+	done
+	sed -i 's|A-Za-z0-9|[:alnum:]|g' "${S}"/gcc/*.awk #215828
+
+	if [[ -x contrib/gcc_update ]] ; then
+		einfo "Touching generated files"
+		./contrib/gcc_update --touch | \
+			while read f ; do
+				einfo "  ${f%%...}"
+			done
+	fi
+}
+
 gcc-abi-map() {
 	# Convert the ABI name we use in Gentoo to what gcc uses
 	local map=()
@@ -503,141 +833,191 @@ gcc-abi-map() {
 		[[ $1 == ${l[0]} ]] && echo ${l[1]} && break
 	done
 }
+
 gcc-multilib-configure() {
-	# if multilib is disabled, get out quick!
 	if ! is_multilib ; then
-		confgcc+=" --disable-multilib"
-		return
+		confgcc+=( --disable-multilib )
+		# Fun times: if we are building for a target that has multiple
+		# possible ABI formats, and the user has told us to pick one
+		# that isn't the default, then not specifying it via the list
+		# below will break that on us.
 	else
-		confgcc+=" --enable-multilib"
+		confgcc+=( --enable-multilib )
 	fi
 
 	# translate our notion of multilibs into gcc's
 	local abi list
-	for abi in $(get_all_abis) ; do
+	for abi in $(get_all_abis TARGET) ; do
 		local l=$(gcc-abi-map ${abi})
 		[[ -n ${l} ]] && list+=",${l}"
 	done
 	if [[ -n ${list} ]] ; then
 		case ${CTARGET} in
 		x86_64*)
-			confgcc+=" --with-multilib-list=${list:1}"
+			tc_version_is_at_least 4.7 && confgcc+=( --with-multilib-list=${list:1} )
 			;;
 		esac
 	fi
 }
+
 gcc-compiler-configure() {
 	gcc-multilib-configure
 
-	if in_iuse mudflap ; then
-		confgcc+=" $(use_enable mudflap libmudflap)"
-	else
-		confgcc+=" --disable-libmudflap"
-	fi
-	if use hardened ; then
-		confgcc+=" --enable-espf=all"
-	else
-		confgcc+=" --enable-espf=no"
-	fi
-
-	if in_iuse openmp ; then
-		# Make sure target has pthreads support. #326757 #335883
-		# There shouldn't be a chicken&egg problem here as openmp won't
-		# build without a C library, and you can't build that w/out
-		# already having a compiler ...
-		if ! is_crosscompile || \
-			   $(tc-getCPP ${CTARGET}) -E - <<<"#include <pthread.h>" >& /dev/null
-			then
-				confgcc+=" $(use_enable openmp libgomp)"
+	if tc_version_is_at_least 4.0 ; then
+		if in_iuse mudflap ; then
+			confgcc+=( $(use_enable mudflap libmudflap) )
 		else
-			# Force disable as the configure script can be dumb #359855
-			confgcc+=" --disable-libgomp"
+			confgcc+=( --disable-libmudflap )
+		fi
+
+		if use_if_iuse libssp ; then
+			confgcc+=( --enable-libssp )
+		else
+			export gcc_cv_libc_provides_ssp=yes
+			confgcc+=( --disable-libssp )
+		fi
+
+		# If we want hardened support with the newer piepatchset for >=gcc 4.4
+		if tc_version_is_at_least 4.4 && want_minispecs ; then
+			confgcc+=( $(use_enable hardened esp) )
+		fi
+
+		if tc_version_is_at_least 4.2 ; then
+			if in_iuse openmp ; then
+				# Make sure target has pthreads support. #326757 #335883
+				# There shouldn't be a chicken&egg problem here as openmp won't
+				# build without a C library, and you can't build that w/out
+				# already having a compiler ...
+				if ! is_crosscompile || \
+				   $(tc-getCPP ${CTARGET}) -E - <<<"#include <pthread.h>" >& /dev/null
+				then
+					confgcc+=( $(use_enable openmp libgomp) )
+				else
+					# Force disable as the configure script can be dumb #359855
+					confgcc+=( --disable-libgomp )
+				fi
+			else
+				# For gcc variants where we don't want openmp (e.g. kgcc)
+				confgcc+=( --disable-libgomp )
+			fi
+		fi
+
+		# Stick the python scripts in their own slotted directory
+		# bug #279252
+		#
+		#  --with-python-dir=DIR
+		#  Specifies where to install the Python modules used for aot-compile. DIR
+		#  should not include the prefix used in installation. For example, if the
+		#  Python modules are to be installed in /usr/lib/python2.5/site-packages,
+		#  then --with-python-dir=/lib/python2.5/site-packages should be passed.
+		#
+		# This should translate into "/share/gcc-data/${CTARGET}/${GCC_CONFIG_VER}/python"
+		if tc_version_is_at_least 4.4 ; then
+			confgcc+=( --with-python-dir=${DATAPATH/$PREFIX/}/python )
 		fi
-	else
-		# For gcc variants where we don't want openmp (e.g. kgcc)
-		confgcc+=" --disable-libgomp"
 	fi
-	# Stick the python scripts in their own slotted directory
-	# bug #279252
-	#
-	#  --with-python-dir=DIR
-	#  Specifies where to install the Python modules used for aot-compile. DIR
-	#  should not include the prefix used in installation. For example, if the
-	#  Python modules are to be installed in /usr/lib/python2.5/site-packages,
-	#  then --with-python-dir=/lib/python2.5/site-packages should be passed.
-	#
-	# This should translate into "/share/gcc-data/${CTARGET}/${GCC_CONFIG_VER}/python"
-	confgcc+=" --with-python-dir=${DATAPATH/$PREFIX/}/python"
+
+	# Enable build warnings by default with cross-compilers when system
+	# paths are included (e.g. via -I flags).
+	is_crosscompile && confgcc+=( --enable-poison-system-directories )
 
 	# For newer versions of gcc, use the default ("release"), because no
 	# one (even upstream apparently) tests with it disabled. #317217
-	confgcc+=" --enable-checking=${GCC_CHECKS_LIST:-release}"
-	
+	if tc_version_is_at_least 4 || [[ -n ${GCC_CHECKS_LIST} ]] ; then
+		confgcc+=( --enable-checking=${GCC_CHECKS_LIST:-release} )
+	else
+		confgcc+=( --disable-checking )
+	fi
+
 	# GTK+ is preferred over xlib in 3.4.x (xlib is unmaintained
 	# right now). Much thanks to <csm@gnu.org> for the heads up.
 	# Travis Tilley <lv@gentoo.org>	 (11 Jul 2004)
 	if ! is_gcj ; then
-		confgcc+=" --disable-libgcj"
+		confgcc+=( --disable-libgcj )
 	elif use gtk ; then
-		confgcc+=" --enable-java-awt=gtk"
+		confgcc+=( --enable-java-awt=gtk )
+	fi
+
+	# allow gcc to search for clock funcs in the main C lib.
+	# if it can't find them, then tough cookies -- we aren't
+	# going to link in -lrt to all C++ apps.  #411681
+	if tc_version_is_at_least 4.4 && is_cxx ; then
+		confgcc+=( --enable-libstdcxx-time )
 	fi
 
 	# newer gcc versions like to bootstrap themselves with C++,
 	# so we need to manually disable it ourselves
-	if ! is_cxx ; then
-		confgcc+=" --disable-build-with-cxx --disable-build-poststage1-with-cxx"
+	if tc_version_is_at_least 4.7 && ! is_cxx ; then
+		confgcc+=( --disable-build-with-cxx --disable-build-poststage1-with-cxx )
 	fi
 
 	# newer gcc's come with libquadmath, but only fortran uses
 	# it, so auto punt it when we don't care
-	if ! is_fortran ; then
-		confgcc+=" --disable-libquadmath"
+	if tc_version_is_at_least 4.6 && ! is_fortran ; then
+		confgcc+=( --disable-libquadmath )
 	fi
 
 	local with_abi_map=()
 	case $(tc-arch) in
-		arm)	#264534
-			local arm_arch="${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=${arm_arch}"
+	arm)	#264534 #414395
+		local a arm_arch=${CTARGET%%-*}
+		# Remove trailing endian variations first: eb el be bl b l
+		for a in e{b,l} {b,l}e b l ; do
+			if [[ ${arm_arch} == *${a} ]] ; then
+				arm_arch=${arm_arch%${a}}
+				break
 			fi
+		done
+		# Convert armv7{a,r,m} to armv7-{a,r,m}
+		[[ ${arm_arch} == armv7? ]] && arm_arch=${arm_arch/7/7-}
+		# See if this is a valid --with-arch flag
+		if (srcdir=${S}/gcc target=${CTARGET} with_arch=${arm_arch};
+		    . "${srcdir}"/config.gcc) &>/dev/null
+		then
+			confgcc+=( --with-arch=${arm_arch} )
+		fi
 
-			# Enable hardvfp
-			if [[ ${CTARGET##*-} == *eabi ]] && [[ $(tc-is-hardfloat) == yes ]] ; then
-			        confgcc+=" --with-float=hard"
-			fi
-			;;
+		# Make default mode thumb for microcontroller classes #418209
+		[[ ${arm_arch} == *-m ]] && confgcc+=( --with-mode=thumb )
+
+		# Enable hardvfp
+		if [[ $(tc-is-softfloat) == "no" ]] && \
+		   [[ ${CTARGET} == armv[67]* ]] && \
+		   tc_version_is_at_least 4.5
+		then
+			# Follow the new arm hardfp distro standard by default
+			confgcc+=( --with-float=hard )
+			case ${CTARGET} in
+			armv6*) confgcc+=( --with-fpu=vfp ) ;;
+			armv7*) confgcc+=( --with-fpu=vfpv3-d16 ) ;;
+			esac
+		fi
+		;;
+	mips)
 		# Add --with-abi flags to set default ABI
-		mips)
-			confgcc+=" --with-abi=$(gcc-abi-map ${DEFAULT_ABI})"
-			;;
-		amd64)
-			# drop the older/ABI checks once this get's merged into some
-			# version of gcc upstream
-			if [[ ${PV} == "4.6.2" ]] && has x32 $(get_all_abis) ; then
-				confgcc+=" --with-abi=$(gcc-abi-map ${DEFAULT_ABI})"
-			fi
-			;;
+		confgcc+=( --with-abi=$(gcc-abi-map ${TARGET_DEFAULT_ABI}) )
+		;;
+	amd64)
+		# drop the older/ABI checks once this get's merged into some
+		# version of gcc upstream
+		if tc_version_is_at_least 4.7 && has x32 $(get_all_abis TARGET) ; then
+			confgcc+=( --with-abi=$(gcc-abi-map ${TARGET_DEFAULT_ABI}) )
+		fi
+		;;
+	x86)
 		# Default arch for x86 is normally i386, lets give it a bump
 		# since glibc will do so based on CTARGET anyways
-		x86)
-			confgcc+=" --with-arch=${CTARGET%%-*}"
-			;;
+		confgcc+=( --with-arch=${CTARGET%%-*} )
+		;;
+	hppa)
 		# Enable sjlj exceptions for backward compatibility on hppa
-		hppa)
-			[[ ${GCCMAJOR} == "3" ]] && confgcc+=" --enable-sjlj-exceptions"
-			;;
+		[[ ${GCCMAJOR} == "3" ]] && confgcc+=( --enable-sjlj-exceptions )
+		;;
+	ppc)
 		# Set up defaults based on current CFLAGS
-		ppc)
-			is-flagq -mfloat-gprs=double && confgcc+=" --enable-e500-double"
-			[[ ${CTARGET//_/-} == *-e500v2-* ]] && confgcc+=" --enable-e500-double"
-			;;
+		is-flagq -mfloat-gprs=double && confgcc+=( --enable-e500-double )
+		[[ ${CTARGET//_/-} == *-e500v2-* ]] && confgcc+=( --enable-e500-double )
+		;;
 	esac
 
 	local GCC_LANG="c"
@@ -647,7 +1027,9 @@ gcc-compiler-configure() {
 	is_go  && GCC_LANG+=",go"
 	if is_objc || is_objcxx ; then
 		GCC_LANG+=",objc"
-		use objc-gc && confgcc+=" --enable-objc-gc"
+		if tc_version_is_at_least 4 ; then
+			use objc-gc && confgcc+=( --enable-objc-gc )
+		fi
 		is_objcxx && GCC_LANG+=",obj-c++"
 	fi
 	is_treelang && GCC_LANG+=",treelang"
@@ -663,415 +1045,94 @@ gcc-compiler-configure() {
 	# is_ada && GCC_LANG+=",ada"
 
 	einfo "configuring for GCC_LANG: ${GCC_LANG}"
-	confgcc+=" --enable-languages=${GCC_LANG}"
-}
-has toolchain_death_notice ${EBUILD_DEATH_HOOKS} || EBUILD_DEATH_HOOKS+=" toolchain_death_notice"
-toolchain_death_notice() {
-	pushd "${WORKDIR}"/build >/dev/null
-	tar jcf gcc-build-logs.tar.bz2 $(find -name config.log)
-	eerror
-	eerror "Please include ${PWD}/gcc-build-logs.tar.bz2 in your bug report"
-	eerror
-	popd >/dev/null
+	confgcc+=( --enable-languages=${GCC_LANG} )
 }
-# This is mostly a stub function to be overwritten in an ebuild
-gcc_do_filter_flags() {
-	strip-flags
 
-	# In general gcc does not like optimization, and add -O2 where
-	# it is safe.  This is especially true for gcc 3.3 + 3.4
-	replace-flags -O? -O2
+gcc_do_configure() {
+	local confgcc=(
+		# Set configuration based on path variables
+		--prefix="${PREFIX}"
+		--bindir="${BINPATH}"
+		--includedir="${INCLUDEPATH}"
+		--datadir="${DATAPATH}"
+		--mandir="${DATAPATH}/man"
+		--infodir="${DATAPATH}/info"
+		--with-gxx-include-dir="${STDCXX_INCDIR}"
+	)
+	# On Darwin we need libdir to be set in order to get correct install names
+	# for things like libobjc-gnu, libgcj and libfortran.  If we enable it on
+	# non-Darwin we screw up the behaviour this eclass relies on.  We in
+	# particular need this over --libdir for bug #255315.
+	[[ ${CTARGET} == *-darwin* ]] && \
+		confgcc+=( --enable-version-specific-runtime-libs )
 
-	# ... sure, why not?
-	strip-unsupported-flags
-
-	# dont want to funk ourselves
-	filter-flags '-mabi*' -m31 -m32 -m64
-
-	case ${GCC_BRANCH_VER} in
-	4.*)
-		case $(tc-arch) in
-			x86|amd64) filter-flags '-mcpu=*';;
-			*-macos)
-				# http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25127
-				[[ ${GCC_BRANCH_VER} == 4.0 || ${GCC_BRANCH_VER}  == 4.1 ]] && \
-					filter-flags '-mcpu=*' '-march=*' '-mtune=*'
-			;;
-		esac
-		;;
-	esac
-
-	# Compile problems with these (bug #6641 among others)...
-	#filter-flags "-fno-exceptions -fomit-frame-pointer -fforce-addr"
-
-	# CFLAGS logic (verified with 3.4.3):
-	# CFLAGS:
-	#	This conflicts when creating a crosscompiler, so set to a sane
-	#	  default in this case:
-	#	used in ./configure and elsewhere for the native compiler
-	#	used by gcc when creating libiberty.a
-	#	used by xgcc when creating libstdc++ (and probably others)!
-	#	  this behavior should be removed...
-	#
-	# CXXFLAGS:
-	#	used by xgcc when creating libstdc++
-	#
-	# STAGE1_CFLAGS (not used in creating a crosscompile gcc):
-	#	used by ${CHOST}-gcc for building stage1 compiler
-	#
-	# BOOT_CFLAGS (not used in creating a crosscompile gcc):
-	#	used by xgcc for building stage2/3 compiler
-
-	if is_crosscompile ; then
-		# Set this to something sane for both native and target
-		CFLAGS="-O2 -pipe"
-
-		local VAR="CFLAGS_"${CTARGET//-/_}
-		CXXFLAGS=${!VAR}
-	fi
-
-	export GCJFLAGS=${GCJFLAGS:-${CFLAGS}}
-}
-gcc_slot_java() {
-	local x
-
-	# Move Java headers to compiler-specific dir
-	for x in "${D}"${PREFIX}/include/gc*.h "${D}"${PREFIX}/include/j*.h ; do
-		[[ -f ${x} ]] && mv -f "${x}" "${D}"${LIBPATH}/include/
-	done
-	for x in gcj gnu java javax org ; do
-		if [[ -d ${D}${PREFIX}/include/${x} ]] ; then
-			dodir /${LIBPATH}/include/${x}
-			mv -f "${D}"${PREFIX}/include/${x}/* "${D}"${LIBPATH}/include/${x}/
-			rm -rf "${D}"${PREFIX}/include/${x}
-		fi
-	done
-
-	if [[ -d ${D}${PREFIX}/lib/security ]] || [[ -d ${D}${PREFIX}/$(get_libdir)/security ]] ; then
-		dodir /${LIBPATH}/security
-		mv -f "${D}"${PREFIX}/lib*/security/* "${D}"${LIBPATH}/security
-		rm -rf "${D}"${PREFIX}/lib*/security
-	fi
-
-	# Move random gcj files to compiler-specific directories
-	for x in libgcj.spec logging.properties ; do
-		x="${D}${PREFIX}/lib/${x}"
-		[[ -f ${x} ]] && mv -f "${x}" "${D}"${LIBPATH}/
-	done
-
-	# SLOT up libgcj.pc if it's available (and let gcc-config worry about links)
-	for x in "${D}"${PREFIX}/lib*/pkgconfig/libgcj*.pc ; do
-		[[ -f ${x} ]] || continue
-		sed -i "/^libdir=/s:=.*:=${LIBPATH}:" "${x}"
-		mv "${x}" "${D}"/usr/lib/pkgconfig/libgcj-${GCC_PV}.pc || die
-	done
-
-	# Rename jar because it could clash with Kaffe's jar if this gcc is
-	# primary compiler (aka don't have the -<version> extension)
-	cd "${D}"${BINPATH}
-	[[ -f jar ]] && mv -f jar gcj-jar
-}
-
-# 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() {
-	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
-}
-
-#---->> some function for src_* <<----
-
-#---->> src_* <<----
-src_unpack() {
-	[[ -z ${UCLIBC_VER} ]] && [[ ${CTARGET} == *-uclibc* ]] && \
-		die "Sorry, this version does not support uClibc"
-
-	if [[ ${PV} == *9999* ]]; then
-		git-2_src_unpack
-		return
-	fi
-
-	pushd "${WORKDIR}" > /dev/null
-	export PATCH_GCC_VER=${PATCH_GCC_VER:-${GCC_RELEASE_VER}}
-	export UCLIBC_GCC_VER=${UCLIBC_GCC_VER:-${PATCH_GCC_VER}}
-	export PIE_GCC_VER=${PIE_GCC_VER:-${GCC_RELEASE_VER}}
-	export HTB_GCC_VER=${HTB_GCC_VER:-${GCC_RELEASE_VER}}
-	export SPECS_GCC_VER=${SPECS_GCC_VER:-${GCC_RELEASE_VER}}
-
-	if [[ -n ${GCC_A_FAKEIT} ]] ; then
-		unpack ${GCC_A_FAKEIT}
-	elif [[ -n ${PRERELEASE} ]] ; then
-		unpack gcc-${PRERELEASE}.tar.bz2
-	elif [[ -n ${SNAPSHOT} ]] ; then
-		unpack gcc-${SNAPSHOT}.tar.bz2
-	elif [[ ${PV} != *9999* ]] ; then
-		unpack gcc-${GCC_RELEASE_VER}.tar.bz2
-		# We want branch updates to be against a release tarball
-		if [[ -n ${BRANCH_UPDATE} ]] ; then
-			pushd "${S}" > /dev/null
-			epatch "${DISTDIR}"/gcc-${GCC_RELEASE_VER}-branch-update-${BRANCH_UPDATE}.patch.bz2
-			popd > /dev/null
-		fi
-	fi
-
-	if [[ -n ${D_VER} ]] && use d ; then
-		pushd "${S}"/gcc > /dev/null
-		unpack gdc-${D_VER}-src.tar.bz2
-		cd ..
-		ebegin "Adding support for the D language"
-		./gcc/d/setup-gcc.sh >& "${T}"/dgcc.log
-		if ! eend $? ; then
-			eerror "The D gcc package failed to apply"
-			eerror "Please include this log file when posting a bug report:"
-			eerror "  ${T}/dgcc.log"
-			die "failed to include the D language"
-		fi
-		popd > /dev/null
-	fi
-
-	[[ -n ${PATCH_VER} ]] && \
-		unpack gcc-${PATCH_GCC_VER}-patches-${PATCH_VER}.tar.bz2
-
-	[[ -n ${UCLIBC_VER} ]] && \
-		unpack gcc-${UCLIBC_GCC_VER}-uclibc-patches-${UCLIBC_VER}.tar.bz2
-
-	[[ -n ${PIE_VER} ]] && \
-		unpack gcc-${PIE_GCC_VER}-piepatches-v${PIE_VER}.tar.bz2
-	[[ -n ${SPECS_VER} ]] && \
-		unpack gcc-${SPECS_GCC_VER}-specs-${SPECS_VER}.tar.bz2
-
-	use_if_iuse boundschecking && unpack "bounds-checking-gcc-${HTB_GCC_VER}-${HTB_VER}.patch.bz2"
-
-	popd > /dev/null
-
-}
-src_prepare() {
-	export BRANDING_GCC_PKGVERSION="Gentoo ${GCC_PVR}"
-	cd "${S}"
-
-	if ! use vanilla ; then
-		if [[ -n ${PATCH_VER} ]] ; then
-			guess_patch_type_in_dir "${WORKDIR}"/patch
-			EPATCH_MULTI_MSG="Applying Gentoo patches ..." \
-			epatch "${WORKDIR}"/patch
-			BRANDING_GCC_PKGVERSION="${BRANDING_GCC_PKGVERSION} p${PATCH_VER}"
-		fi
-		if [[ -n ${UCLIBC_VER} ]] ; then
-			guess_patch_type_in_dir "${WORKDIR}"/uclibc
-			EPATCH_MULTI_MSG="Applying uClibc patches ..." \
-			epatch "${WORKDIR}"/uclibc
-		fi
-		if use_if_iuse boundschecking ; then
-			# modify the bounds checking patch with a regression patch
-			epatch "${WORKDIR}/bounds-checking-gcc-${HTB_GCC_VER}-${HTB_VER}.patch"
-			BRANDING_GCC_PKGVERSION="${BRANDING_GCC_PKGVERSION}, HTB-${HTB_GCC_VER}-${HTB_VER}"
-		fi
-		if use_if_iuse hardened && ! use_if_iuse nopie && [[ -n ${PIE_VER} ]] ; then
-			guess_patch_type_in_dir "${WORKDIR}"/piepatch/
-			EPATCH_MULTI_MSG="Applying pie patches ..." \
-			epatch "${WORKDIR}"/piepatch/
-			BRANDING_GCC_PKGVERSION="${BRANDING_GCC_PKGVERSION}, pie-${PIE_VER}"
-		fi
-	fi
-	epatch_user
-
-	if use_if_iuse hardened ; then
-		BRANDING_GCC_PKGVERSION=${BRANDING_GCC_PKGVERSION/Gentoo/Gentoo Hardened}
-	fi
-
-	# install the libstdc++ python into the right location
-	# http://gcc.gnu.org/PR51368
-	sed -i \
-		'/^pythondir =/s:=.*:= $(datadir)/python:' \
-		"${S}"/libstdc++-v3/python/Makefile.in || die
-	
-	setup_multilib_osdirnames
-
-	if [[ -n ${SNAPSHOT} || -n ${PRERELEASE} ]] ; then
-		# BASE-VER must be a three-digit version number
-		# followed by an optional -pre string
-		#   eg. 4.5.1, 4.6.2-pre20120213, 4.7.0-pre9999
-		# If BASE-VER differs from ${PV/_/-} then libraries get installed in
-		# the wrong directory.
-		echo ${PV/_/-} > "${S}"/gcc/BASE-VER
-	fi
-	
-	# >= gcc-4.3 doesn't bundle ecj.jar, so copy it
-	if use gcj ; then
-		einfo "Copying ecj-4.5.jar"
-		cp -pPR "${DISTDIR}/ecj-4.5.jar" "${S}/ecj.jar" || die
-	fi
-	
-	# Prevent libffi from being installed
-	sed -i -e 's/\(install.*:\) install-.*recursive/\1/' "${S}"/libffi/Makefile.in
-	sed -i -e 's/\(install-data-am:\).*/\1/' "${S}"/libffi/include/Makefile.in
-
-	# Fixup libtool to correctly generate .la files with portage
-	cd "${S}"
-	eautoreconf
-	for subdirs in gcc libccp ; do
-		cd "${S}/${subdirs}/"
-		eautoreconf
-	done
-	cd "${S}"
-	autogen Makefile.def
-	elibtoolize --portage --shallow --no-uclibc
-
-	gnuconfig_update
-
-	# update configure files
-	local f
-	einfo "Fixing misc issues in configure files"
-	epatch "${GCC_FILESDIR}"/gcc-configure-texinfo.patch
-	for f in $(grep -l 'autoconf version 2.13' $(find "${S}" -name configure)) ; do
-		ebegin "  Updating ${f/${S}\/} [LANG]"
-		patch "${f}" "${GCC_FILESDIR}"/gcc-configure-LANG.patch >& "${T}"/configure-patch.log \
-			|| eerror "Please file a bug about this"
-		eend $?
-	done
-	sed -i 's|A-Za-z0-9|[:alnum:]|g' "${S}"/gcc/*.awk #215828
-
-	if [[ -x contrib/gcc_update ]] ; then
-		einfo "Touching generated files"
-		./contrib/gcc_update --touch | \
-			while read f ; do
-				einfo "  ${f%%...}"
-			done
-	fi
-
-	disable_multilib_libjava || die "failed to disable multilib java"
-}
-src_configure() {
-
-	multilib_env ${CTARGET}
-	gcc_do_filter_flags
-	einfo "CFLAGS=\"${CFLAGS}\""
-	einfo "CXXFLAGS=\"${CXXFLAGS}\""
-
-	# Force internal zip based jar script to avoid random
-	# issues with 3rd party jar implementations.  #384291
-	export JAR=no
-
-	# Build in a separate build tree
-	mkdir -p "${WORKDIR}"/build
-	pushd "${WORKDIR}"/build > /dev/null
-
-	local confgcc
-
-	# Sanity check for USE=nocxx -> USE=cxx migration
-	if in_iuse cxx && in_iuse nocxx ; then
-		if (use cxx && use nocxx) || (use !cxx && use !nocxx) ; then
-			eerror "We are migrating USE=nocxx to USE=cxx, but your USE settings do not make"
-			eerror "sense.  Please make sure these two flags line up logically in your setup."
-			die "USE='cxx nocxx' and USE='-cxx -nocxx' make no sense"
-		fi
-	fi
-
-	# Set configuration based on path variables
-	confgcc+=" \
-		--prefix=${PREFIX} \
-		--bindir=${BINPATH} \
-		--includedir=${INCLUDEPATH} \
-		--datadir=${DATAPATH} \
-		--mandir=${DATAPATH}/man \
-		--infodir=${DATAPATH}/info \
-		--with-gxx-include-dir=${STDCXX_INCDIR}"
-	# On Darwin we need libdir to be set in order to get correct install names
-	# for things like libobjc-gnu, libgcj and libfortran.  If we enable it on
-	# non-Darwin we screw up the behaviour this eclass relies on.  We in
-	# particular need this over --libdir for bug #255315.
-	[[ ${CTARGET} == *-darwin* ]] && \
-		confgcc+=" --enable-version-specific-runtime-libs"
-
-	# All our cross-compile logic goes here !  woo !
-	confgcc+=" --host=${CHOST}"
-	if is_crosscompile || tc-is-cross-compiler ; then
-		# Straight from the GCC install doc:
-		# "GCC has code to correctly determine the correct value for target
-		# for nearly all native systems. Therefore, we highly recommend you
-		# not provide a configure target when configuring a native compiler."
-		confgcc+=" --target=${CTARGET}"
-	fi
-	[[ -n ${CBUILD} ]] && confgcc+=" --build=${CBUILD}"
+	# All our cross-compile logic goes here !  woo !
+	confgcc+=( --host=${CHOST} )
+	if is_crosscompile || tc-is-cross-compiler ; then
+		# Straight from the GCC install doc:
+		# "GCC has code to correctly determine the correct value for target
+		# for nearly all native systems. Therefore, we highly recommend you
+		# not provide a configure target when configuring a native compiler."
+		confgcc+=( --target=${CTARGET} )
+	fi
+	[[ -n ${CBUILD} ]] && confgcc+=( --build=${CBUILD} )
 
 	# ppc altivec support
-	confgcc+=" $(use_enable altivec)"
+	confgcc+=( $(use_enable altivec) )
 
 	# gcc has fixed-point arithmetic support in 4.3 for mips targets that can
 	# significantly increase compile time by several hours.  This will allow
 	# users to control this feature in the event they need the support.
-	confgcc+=" $(use_enable fixed-point)"
-
-	# Graphite support was added in 4.4, which depends on external libraries
-	# for optimizations.  Current versions use cloog-ppl (cloog fork with Parma
-	# PPL backend).  Sometime in the future we will use upstream cloog with the
-	# ISL backend (note: PPL will still be a requirement).  cloog-ppl's include
-	# path was modified to prevent collisions between the two packages (library
-	# names are different).
-	#
-	# We disable the PPL version check so we can use >=ppl-0.11.
-	confgcc+=" $(use_with graphite ppl)"
-	confgcc+=" $(use_with graphite cloog)"
-	if use graphite; then
-		confgcc+=" --disable-ppl-version-check"
-		confgcc+=" --with-cloog-include=/usr/include/cloog-ppl"
+	tc_version_is_at_least 4.3 && confgcc+=( $(use_enable fixed-point) )
+
+	# graphite was added in 4.4 but we only support it in 4.6+ due to external
+	# library issues.  4.6/4.7 uses cloog-ppl which is a fork of CLooG with a
+	# PPL backend.  4.8+ uses upstream CLooG with the ISL backend.  We install
+	# cloog-ppl into a non-standard location to prevent collisions.
+	if tc_version_is_at_least 4.8 ; then
+		confgcc+=( $(use_with graphite cloog) )
+		use graphite && confgcc+=( --disable-isl-version-check )
+	elif tc_version_is_at_least 4.6 ; then
+		confgcc+=( $(use_with graphite cloog) )
+		confgcc+=( $(use_with graphite ppl) )
+		use graphite && confgcc+=( --with-cloog-include=/usr/include/cloog-ppl )
+		use graphite && confgcc+=( --disable-ppl-version-check )
+	elif tc_version_is_at_least 4.4 ; then
+		confgcc+=( --without-cloog )
+		confgcc+=( --without-ppl )
+	fi
+
+	if tc_version_is_at_least 4.6 ; then
+		confgcc+=( $(use_enable lto) )
+	elif tc_version_is_at_least 4.5 ; then
+		confgcc+=( --disable-lto )
 	fi
-	
-	# LTO support was added in 4.5, which depends upon elfutils.  This allows
-	# users to enable that option, and pull in the additional library.  In 4.6,
-	# the dependency is no longer required.
-	confgcc+=" --enable-lto"
+
+	case $(tc-is-softfloat) in
+	yes)    confgcc+=( --with-float=soft ) ;;
+	softfp) confgcc+=( --with-float=softfp ) ;;
+	*)
+		# If they've explicitly opt-ed in, do hardfloat,
+		# otherwise let the gcc default kick in.
+		[[ ${CTARGET//_/-} == *-hardfloat-* ]] \
+			&& confgcc+=( --with-float=hard )
+		;;
+	esac
 
 	# Native Language Support
 	if use nls ; then
-		confgcc+=" --enable-nls --without-included-gettext"
+		confgcc+=( --enable-nls --without-included-gettext )
 	else
-		confgcc+=" --disable-nls"
+		confgcc+=( --disable-nls )
 	fi
 
 	# reasonably sane globals (hopefully)
-	confgcc+=" \
-		--with-system-zlib \
-		--enable-secureplt"
-
-# 		--disable-werror \
+	confgcc+=(
+		--with-system-zlib
+		--enable-obsolete
+		--disable-werror
+		--enable-secureplt
+	)
 
 	gcc-compiler-configure || die
 
@@ -1080,193 +1141,413 @@ src_configure() {
 		# disable a bunch of features or gcc goes boom
 		local needed_libc=""
 		case ${CTARGET} in
-			*-linux)		 needed_libc=no-fucking-clue;;
-			*-dietlibc)		 needed_libc=dietlibc;;
-			*-elf|*-eabi)	 needed_libc=newlib;;
-			*-freebsd*)		 needed_libc=freebsd-lib;;
-			*-gnu*)			 needed_libc=glibc;;
-			*-klibc)		 needed_libc=klibc;;
-			*-uclibc*)		 needed_libc=uclibc;;
-			*-cygwin)        needed_libc=cygwin;;
-			mingw*|*-mingw*) needed_libc=mingw-runtime;;
-			avr)			 confgcc+=" --enable-shared --disable-threads";;
+		*-linux)		 needed_libc=no-fucking-clue;;
+		*-dietlibc)		 needed_libc=dietlibc;;
+		*-elf|*-eabi)	 needed_libc=newlib;;
+		*-freebsd*)		 needed_libc=freebsd-lib;;
+		*-gnu*)			 needed_libc=glibc;;
+		*-klibc)		 needed_libc=klibc;;
+		*-musl*)		 needed_libc=musl;;
+		*-uclibc*)
+			if ! echo '#include <features.h>' | \
+			   $(tc-getCPP ${CTARGET}) -E -dD - 2>/dev/null | \
+			   grep -q __HAVE_SHARED__
+			then #291870
+				confgcc+=( --disable-shared )
+			fi
+			needed_libc=uclibc
+			;;
+		*-cygwin)		 needed_libc=cygwin;;
+		x86_64-*-mingw*|\
+		*-w64-mingw*)	 needed_libc=mingw64-runtime;;
+		mingw*|*-mingw*) needed_libc=mingw-runtime;;
+		avr)			 confgcc+=( --enable-shared --disable-threads );;
 		esac
 		if [[ -n ${needed_libc} ]] ; then
+			local confgcc_no_libc=( --disable-shared )
+			tc_version_is_at_least 4.8 && confgcc_no_libc+=( --disable-libatomic )
 			if ! has_version ${CATEGORY}/${needed_libc} ; then
-				confgcc+=" --disable-shared --disable-threads --without-headers"
+				confgcc+=(
+					"${confgcc_no_libc[@]}"
+					--disable-threads
+					--without-headers
+				)
 			elif built_with_use --hidden --missing false ${CATEGORY}/${needed_libc} crosscompile_opts_headers-only ; then
-				confgcc+=" --disable-shared --with-sysroot=${PREFIX}/${CTARGET}"
+				confgcc+=(
+					"${confgcc_no_libc[@]}"
+					--with-sysroot=${PREFIX}/${CTARGET}
+				)
 			else
-				confgcc+=" --with-sysroot=${PREFIX}/${CTARGET}"
+				confgcc+=( --with-sysroot=${PREFIX}/${CTARGET} )
 			fi
 		fi
 
-		confgcc+=" --disable-bootstrap"
+		tc_version_is_at_least 4.2 && confgcc+=( --disable-bootstrap )
 	else
 		if tc-is-static-only ; then
-			confgcc+=" --disable-shared"
+			confgcc+=( --disable-shared )
 		else
-			confgcc+=" --enable-shared"
+			confgcc+=( --enable-shared )
 		fi
 		case ${CHOST} in
-			mingw*|*-mingw*|*-cygwin)
-				confgcc+=" --enable-threads=win32" ;;
-			*)
-				confgcc+=" --enable-threads=posix" ;;
+		mingw*|*-mingw*|*-cygwin)
+			confgcc+=( --enable-threads=win32 ) ;;
+		*)
+			confgcc+=( --enable-threads=posix ) ;;
 		esac
-	in_iuse bootstrap && confgcc+=" --enable-bootstrap"
 	fi
 	# __cxa_atexit is "essential for fully standards-compliant handling of
 	# destructors", but apparently requires glibc.
 	case ${CTARGET} in
 	*-uclibc*)
-		confgcc+=" --disable-__cxa_atexit --enable-target-optspace $(use_enable nptl tls)"
+		confgcc+=(
+			--disable-__cxa_atexit
+			$(use_enable nptl tls)
+		)
+		[[ ${GCCMAJOR}.${GCCMINOR} == 3.3 ]] && confgcc+=( --enable-sjlj-exceptions )
+		if tc_version_is_at_least 3.4 && ! tc_version_is_at_least 4.3 ; then
+			confgcc+=( --enable-clocale=uclibc )
+		fi
 		;;
 	*-elf|*-eabi)
-		confgcc+=" --with-newlib"
+		confgcc+=( --with-newlib )
 		;;
 	*-gnu*)
-		confgcc+=" --enable-__cxa_atexit"
-		confgcc+=" --enable-clocale=gnu"
+		confgcc+=(
+			--enable-__cxa_atexit
+			--enable-clocale=gnu
+		)
 		;;
 	*-freebsd*)
-		confgcc+=" --enable-__cxa_atexit"
+		confgcc+=( --enable-__cxa_atexit )
 		;;
 	*-solaris*)
-		confgcc+=" --enable-__cxa_atexit"
+		confgcc+=( --enable-__cxa_atexit )
 		;;
 	esac
-	
+
+	tc_version_is_at_least 3.4 || confgcc+=( --disable-libunwind-exceptions )
+
 	# if the target can do biarch (-m32/-m64), enable it.  overhead should
 	# be small, and should simplify building of 64bit kernels in a 32bit
 	# userland by not needing sys-devel/kgcc64.  #349405
 	case $(tc-arch) in
-	ppc|ppc64) confgcc+=" --enable-targets=all" ;;
-	sparc)     confgcc+=" --enable-targets=all" ;;
-	amd64|x86) confgcc+=" --enable-targets=all" ;;
+	ppc|ppc64) tc_version_is_at_least 3.4 && confgcc+=( --enable-targets=all ) ;;
+	sparc)     tc_version_is_at_least 4.4 && confgcc+=( --enable-targets=all ) ;;
+	amd64|x86) tc_version_is_at_least 4.3 && confgcc+=( --enable-targets=all ) ;;
 	esac
 
-	set -- "$@" \
-		--with-bugurl=http://bugs.gentoo.org/ \
-		--with-pkgversion="${BRANDING_GCC_PKGVERSION}"
-	set -- ${confgcc} "$@" ${EXTRA_ECONF}
+	tc_version_is_at_least 4.3 && confgcc+=(
+		--with-bugurl=http://bugs.gentoo.org/
+		--with-pkgversion="${BRANDING_GCC_PKGVERSION}"
+	)
+
+	confgcc+=(
+		"$@"
+		${EXTRA_ECONF}
+	)
+
+	# Disable gcc info regeneration -- it ships with generated info pages
+	# already.  Our custom version/urls/etc... trigger it.  #464008
+	export gcc_cv_prog_makeinfo_modern=no
+
+	# Do not let the X detection get in our way.  We know things can be found
+	# via system paths, so no need to hardcode things that'll break multilib.
+	# Older gcc versions will detect ac_x_libraries=/usr/lib64 which ends up
+	# killing the 32bit builds which want /usr/lib.
+	export ac_cv_have_x='have_x=yes ac_x_includes= ac_x_libraries='
+
+	# Nothing wrong with a good dose of verbosity
+	echo
+	einfo "PREFIX:			${PREFIX}"
+	einfo "BINPATH:			${BINPATH}"
+	einfo "LIBPATH:			${LIBPATH}"
+	einfo "DATAPATH:		${DATAPATH}"
+	einfo "STDCXX_INCDIR:	${STDCXX_INCDIR}"
+	echo
+	einfo "Configuring GCC with: ${confgcc[@]//--/\n\t--}"
+	echo
+
+	# Build in a separate build tree
+	mkdir -p "${WORKDIR}"/build
+	pushd "${WORKDIR}"/build > /dev/null
+
+	# and now to do the actual configuration
+	addwrite /dev/zero
+	echo "${S}"/configure "${confgcc[@]}"
+	"${S}"/configure "${confgcc[@]}" || die "failed to run configure"
+
+	# return to whatever directory we were in before
+	popd > /dev/null
+}
+
+has toolchain_death_notice ${EBUILD_DEATH_HOOKS} || EBUILD_DEATH_HOOKS+=" toolchain_death_notice"
+toolchain_death_notice() {
+	pushd "${WORKDIR}"/build >/dev/null
+	tar jcf gcc-build-logs.tar.bz2 $(find -name config.log)
+	eerror
+	eerror "Please include ${PWD}/gcc-build-logs.tar.bz2 in your bug report"
+	eerror
+	popd >/dev/null
+}
+
+# This function accepts one optional argument, the make target to be used.
+# If ommitted, gcc_do_make will try to guess whether it should use all,
+# profiledbootstrap, or bootstrap-lean depending on CTARGET and arch. An
+# example of how to use this function:
+#
+#	gcc_do_make all-target-libstdc++-v3
+#
+# In addition to the target to be used, the following variables alter the
+# behavior of this function:
+#
+#	LDFLAGS
+#			Flags to pass to ld
+#
+#	STAGE1_CFLAGS
+#			CFLAGS to use during stage1 of a gcc bootstrap
+#
+#	BOOT_CFLAGS
+#			CFLAGS to use during stages 2+3 of a gcc bootstrap.
+#
+# Travis Tilley <lv@gentoo.org> (04 Sep 2004)
+#
+gcc_do_make() {
+	# Set make target to $1 if passed
+	[[ -n $1 ]] && GCC_MAKE_TARGET=$1
+	# default target
+	if is_crosscompile || tc-is-cross-compiler ; then
+		# 3 stage bootstrapping doesnt quite work when you cant run the
+		# resulting binaries natively ^^;
+		GCC_MAKE_TARGET=${GCC_MAKE_TARGET-all}
+	else
+		GCC_MAKE_TARGET=${GCC_MAKE_TARGET-bootstrap-lean}
+	fi
+
+	# the gcc docs state that parallel make isnt supported for the
+	# profiledbootstrap target, as collisions in profile collecting may occur.
+	# boundschecking also seems to introduce parallel build issues.
+	if [[ ${GCC_MAKE_TARGET} == "profiledbootstrap" ]] ||
+	   use_if_iuse boundschecking
+	then
+		export MAKEOPTS="${MAKEOPTS} -j1"
+	fi
+
+	if [[ ${GCC_MAKE_TARGET} == "all" ]] ; then
+		STAGE1_CFLAGS=${STAGE1_CFLAGS-"${CFLAGS}"}
+	elif [[ $(gcc-version) == "3.4" && ${GCC_BRANCH_VER} == "3.4" ]] && gcc-specs-ssp ; then
+		# See bug #79852
+		STAGE1_CFLAGS=${STAGE1_CFLAGS-"-O2"}
+	fi
+
+	if is_crosscompile; then
+		# In 3.4, BOOT_CFLAGS is never used on a crosscompile...
+		# but I'll leave this in anyways as someone might have had
+		# some reason for putting it in here... --eradicator
+		BOOT_CFLAGS=${BOOT_CFLAGS-"-O2"}
+	else
+		# we only want to use the system's CFLAGS if not building a
+		# cross-compiler.
+		BOOT_CFLAGS=${BOOT_CFLAGS-"$(get_abi_CFLAGS ${TARGET_DEFAULT_ABI}) ${CFLAGS}"}
+	fi
+
+	pushd "${WORKDIR}"/build >/dev/null
+
+	emake \
+		LDFLAGS="${LDFLAGS}" \
+		STAGE1_CFLAGS="${STAGE1_CFLAGS}" \
+		LIBPATH="${LIBPATH}" \
+		BOOT_CFLAGS="${BOOT_CFLAGS}" \
+		${GCC_MAKE_TARGET} \
+		|| die "emake failed with ${GCC_MAKE_TARGET}"
+
+	if ! is_crosscompile && use cxx && use_if_iuse doc ; then
+		if type -p doxygen > /dev/null ; then
+			if tc_version_is_at_least 4.3 ; then
+				cd "${CTARGET}"/libstdc++-v3/doc
+				emake doc-man-doxygen || ewarn "failed to make docs"
+			elif tc_version_is_at_least 3.0 ; then
+				cd "${CTARGET}"/libstdc++-v3
+				emake doxygen-man || ewarn "failed to make docs"
+			fi
+		else
+			ewarn "Skipping libstdc++ manpage generation since you don't have doxygen installed"
+		fi
+	fi
+
+	popd >/dev/null
+}
+
+gcc_do_filter_flags() {
+	strip-flags
+
+	# In general gcc does not like optimization, and adds -O2 where
+	# it is safe.  This is especially true for gcc 3.3 + 3.4
+	replace-flags -O? -O2
+
+	# dont want to funk ourselves
+	filter-flags '-mabi*' -m31 -m32 -m64
+
+	case ${GCC_BRANCH_VER} in
+		3.2|3.3)
+			replace-cpu-flags k8 athlon64 opteron x86-64
+			replace-cpu-flags pentium-m pentium3m pentium3
+			replace-cpu-flags G3 750
+			replace-cpu-flags G4 7400
+			replace-cpu-flags G5 7400
+	
+			case $(tc-arch) in
+				amd64)
+					replace-cpu-flags core2 nocona
+					filter-flags '-mtune=*'
+					;;
+				x86)
+					replace-cpu-flags core2 prescott
+					filter-flags '-mtune=*'
+					;;
+			esac
+
+			# XXX: should add a sed or something to query all supported flags
+			#      from the gcc source and trim everything else ...
+			filter-flags -f{no-,}unit-at-a-time -f{no-,}web -mno-tls-direct-seg-refs
+			filter-flags -f{no-,}stack-protector{,-all}
+			filter-flags -fvisibility-inlines-hidden -fvisibility=hidden
+			;;
+		3.4|4.*)
+			case $(tc-arch) in
+				amd64|x86)
+					filter-flags '-mcpu=*'
+					;;
+				alpha)
+					# https://bugs.gentoo.org/454426
+					append-ldflags -Wl,--no-relax
+					;;
+				*-macos)
+					# http://gcc.gnu.org/PR25127
+					[[ ${GCC_BRANCH_VER} == 4.0 || ${GCC_BRANCH_VER}  == 4.1 ]] && \
+						filter-flags '-mcpu=*' '-march=*' '-mtune=*'
+					;;
+			esac
+			;;
+	esac
+
+	case ${GCC_BRANCH_VER} in
+		4.6)
+			case $(tc-arch) in
+				amd64|x86)
+					# https://bugs.gentoo.org/411333
+					# https://bugs.gentoo.org/466454
+					replace-cpu-flags c3-2 pentium2 pentium3 pentium3m pentium-m i686
+					;;
+			esac
+			;;
+	esac
+
+	strip-unsupported-flags
+	
+	# TODO: Move to gcc_do_make()
+
+	# CFLAGS logic (verified with 3.4.3):
+	# CFLAGS:
+	#	This conflicts when creating a crosscompiler, so set to a sane
+	#	  default in this case:
+	#	used in ./configure and elsewhere for the native compiler
+	#	used by gcc when creating libiberty.a
+	#	used by xgcc when creating libstdc++ (and probably others)!
+	#	  this behavior should be removed...
+	#
+	# CXXFLAGS:
+	#	used by xgcc when creating libstdc++
+	#
+	# STAGE1_CFLAGS (not used in creating a crosscompile gcc):
+	#	used by ${CHOST}-gcc for building stage1 compiler
+	#
+	# BOOT_CFLAGS (not used in creating a crosscompile gcc):
+	#	used by xgcc for building stage2/3 compiler
+
+	if is_crosscompile ; then
+		# Set this to something sane for both native and target
+		CFLAGS="-O2 -pipe"
+		FFLAGS=${CFLAGS}
+		FCFLAGS=${CFLAGS}
+
+		local VAR="CFLAGS_"${CTARGET//-/_}
+		CXXFLAGS=${!VAR}
+	fi
+
+	export GCJFLAGS=${GCJFLAGS:-${CFLAGS}}
+}
 
-	# Nothing wrong with a good dose of verbosity
-	echo
-	einfo "PREFIX:			${PREFIX}"
-	einfo "BINPATH:			${BINPATH}"
-	einfo "LIBPATH:			${LIBPATH}"
-	einfo "DATAPATH:		${DATAPATH}"
-	einfo "STDCXX_INCDIR:	${STDCXX_INCDIR}"
-	echo
-	einfo "Configuring GCC with: ${@//--/\n\t--}"
-	echo
+toolchain_src_compile() {
+	gcc_do_filter_flags
+	einfo "CFLAGS=\"${CFLAGS}\""
+	einfo "CXXFLAGS=\"${CXXFLAGS}\""
+
+	# Force internal zip based jar script to avoid random
+	# issues with 3rd party jar implementations.  #384291
+	export JAR=no
 
+	# For hardened gcc 4.3 piepatchset to build the hardened specs
+	# file (build.specs) to use when building gcc.
+	if ! tc_version_is_at_least 4.4 && want_minispecs ; then
+		setup_minispecs_gcc_build_specs
+	fi
 	# Build in a separate build tree
 	mkdir -p "${WORKDIR}"/build
 	pushd "${WORKDIR}"/build > /dev/null
 
-	# and now to do the actual configuration
-	addwrite /dev/zero
-	echo "${S}"/configure "$@"
-	"${S}"/configure "$@" || die "failed to run configure."
-	# return to whatever directory we were in before
-	popd > /dev/null
+	einfo "Configuring ${PN} ..."
+	gcc_do_configure
 
 	touch "${S}"/gcc/c-gperf.h
-}
 
-src_compile() {
 	# Do not make manpages if we do not have perl ...
 	[[ ! -x /usr/bin/perl ]] \
 		&& find "${WORKDIR}"/build -name '*.[17]' | xargs touch
 
 	einfo "Compiling ${PN} ..."
-	# Fix for libtool-portage.patch
-	local OLDS=${S}
-	S=${WORKDIR}/build
-
-	# Set make target to $1 if passed
-	[[ -n $1 ]] && GCC_MAKE_TARGET=$1
-	# default target
-	if is_crosscompile || tc-is-cross-compiler ; then
-		# 3 stage bootstrapping doesnt quite work when you cant run the
-		# resulting binaries natively ^^;
-		GCC_MAKE_TARGET=${GCC_MAKE_TARGET-all}
-	else
-		GCC_MAKE_TARGET=${GCC_MAKE_TARGET-bootstrap-lean}
-	fi
-
-	# the gcc docs state that parallel make isnt supported for the
-	# profiledbootstrap target, as collisions in profile collecting may occur.
-	# boundschecking also seems to introduce parallel build issues.
-	if [[ ${GCC_MAKE_TARGET} == "profiledbootstrap" ]] ||
-	   use_if_iuse boundschecking
-	then
-		export MAKEOPTS="${MAKEOPTS} -j1"
-	fi
+	gcc_do_make ${GCC_MAKE_TARGET}
 
-	if [[ ${GCC_MAKE_TARGET} == "all" ]] ; then
-		STAGE1_CFLAGS=${STAGE1_CFLAGS-"${CFLAGS}"}
-	fi
-
-	if is_crosscompile; then
-		# In 3.4, BOOT_CFLAGS is never used on a crosscompile...
-		# but I'll leave this in anyways as someone might have had
-		# some reason for putting it in here... --eradicator
-		BOOT_CFLAGS=${BOOT_CFLAGS-"-O2"}
-	else
-		# we only want to use the system's CFLAGS if not building a
-		# cross-compiler.
-		BOOT_CFLAGS=${BOOT_CFLAGS-"$(get_abi_CFLAGS) ${CFLAGS}"}
-	fi
-
-	pushd "${WORKDIR}"/build
-
-	emake \
-		LDFLAGS="${LDFLAGS}" \
-		STAGE1_CFLAGS="${STAGE1_CFLAGS}" \
-		LIBPATH="${LIBPATH}" \
-		BOOT_CFLAGS="${BOOT_CFLAGS}" \
-		${GCC_MAKE_TARGET} \
-		|| die "emake failed with ${GCC_MAKE_TARGET}"
+	popd > /dev/null
+}
 
-	if ! is_crosscompile && use cxx && use doc ; then
-		if type -p doxygen > /dev/null ; then
-			cd "${CTARGET}"/libstdc++-v3/doc
-			emake doc-man-doxygen || ewarn "failed to make docs"
-		else
-			ewarn "Skipping libstdc++ manpage generation since you don't have doxygen installed"
-		fi
+toolchain_src_test() {
+	if use regression-test ; then
+		cd "${WORKDIR}"/build
+		emake -k check
 	fi
-
-	popd > /dev/null
 }
 
-src_test() {
+toolchain_src_install() {
 	cd "${WORKDIR}"/build
-	emake -k check || ewarn "check failed and that sucks :("
-}
 
-src_install() {
+	# Do allow symlinks in private gcc include dir as this can break the build
+	find gcc/include*/ -type l -delete
+
+	# Copy over the info pages.  We disabled their generation earlier, but the
+	# build system only expects to install out of the build dir, not the source.  #464008
+	mkdir -p gcc/doc
 	local x=
+	for x in "${S}"/gcc/doc/*.info* ; do
+		if [[ -f ${x} ]] ; then
+			cp "${x}" gcc/doc/ || die
+		fi
+	done
 
-	cd "${WORKDIR}"/build
-	# Do allow symlinks in private gcc include dir as this can break the build
-	find gcc/include*/ -type l -print0 | xargs -0 rm -f
 	# Remove generated headers, as they can cause things to break
 	# (ncurses, openssl, etc).
-	for x in $(find gcc/include*/ -name '*.h') ; do
+	while read x ; do
 		grep -q 'It has been auto-edited by fixincludes from' "${x}" \
 			&& rm -f "${x}"
-	done
+	done < <(find gcc/include*/ -name '*.h')
+
 	# Do the 'make install' from the build directory
-	S=${WORKDIR}/build \
-	emake -j1 DESTDIR="${D}" install || die
+	S="${WORKDIR}"/build emake -j1 DESTDIR="${D}" install || die
+
 	# Punt some tools which are really only useful while building gcc
 	find "${D}" -name install-tools -prune -type d -exec rm -rf "{}" \;
 	# This one comes with binutils
-	find "${D}" -name libiberty.a -exec rm -f "{}" \;
+	find "${D}" -name libiberty.a -delete
 
 	# Move the libraries to the proper location
 	gcc_movelibs
@@ -1282,15 +1563,12 @@ src_install() {
 	create_gcc_env_entry
 
 	# Setup the gcc_env_entry for hardened gcc 4 with minispecs
-	#if want_minispecs ; then
-	#	copy_minispecs_gcc_specs
-	#fi
+	want_minispecs && copy_minispecs_gcc_specs
+
 	# Make sure we dont have stuff lying around that
 	# can nuke multiple versions of gcc
-
 	gcc_slot_java
 
-	# These should be symlinks
 	dodir /usr/bin
 	cd "${D}"${BINPATH}
 	# Ugh: we really need to auto-detect this list.
@@ -1306,8 +1584,7 @@ src_install() {
 				dosym ${BINPATH}/${CTARGET}-${x} \
 					/usr/bin/${x}-${GCC_CONFIG_VER}
 			fi
-
-			# Create version-ed symlinks
+			# Create versioned symlinks
 			dosym ${BINPATH}/${CTARGET}-${x} \
 				/usr/bin/${CTARGET}-${x}-${GCC_CONFIG_VER}
 		fi
@@ -1330,11 +1607,13 @@ src_install() {
 		rm -rf "${D}"/usr/share/{man,info}
 		rm -rf "${D}"${DATAPATH}/{man,info}
 	else
-		local cxx_mandir=$(find "${WORKDIR}/build/${CTARGET}/libstdc++-v3" -name man)
-		if [[ -d ${cxx_mandir} ]] ; then
-			# clean bogus manpages #113902
-			find "${cxx_mandir}" -name '*_build_*' -exec rm {} \;
-			cp -r "${cxx_mandir}"/man? "${D}/${DATAPATH}"/man/
+		if tc_version_is_at_least 3.0 ; then
+			local cxx_mandir=$(find "${WORKDIR}/build/${CTARGET}/libstdc++-v3" -name man)
+			if [[ -d ${cxx_mandir} ]] ; then
+				# clean bogus manpages #113902
+				find "${cxx_mandir}" -name '*_build_*' -exec rm {} \;
+				cp -r "${cxx_mandir}"/man? "${D}/${DATAPATH}"/man/
+			fi
 		fi
 		has noinfo ${FEATURES} \
 			&& rm -r "${D}/${DATAPATH}"/info \
@@ -1347,7 +1626,7 @@ src_install() {
 	find "${D}" -depth -type d -delete 2>/dev/null
 
 	# install testsuite results
-	if use test; then
+	if use regression-test; then
 		docinto testsuite
 		find "${WORKDIR}"/build -type f -name "*.sum" -print0 | xargs -0 dodoc
 		find "${WORKDIR}"/build -type f -path "*/testsuite/*.log" -print0 \
@@ -1361,6 +1640,7 @@ src_install() {
 		if tc_version_is_at_least 4.0 ; then
 			newins "${GCC_FILESDIR}"/awk/fixlafiles.awk-no_gcc_la fixlafiles.awk || die
 			find "${D}/${LIBPATH}" -name libstdc++.la -type f -exec rm "{}" \;
+			find "${D}/${LIBPATH}" -name "lib?san.la" -type f -exec rm "{}" \; # 487550
 		else
 			doins "${GCC_FILESDIR}"/awk/fixlafiles.awk || die
 		fi
@@ -1391,20 +1671,217 @@ src_install() {
 	export QA_WX_LOAD="usr/lib*/go/*/*.gox"
 
 	# Disable RANDMMAP so PCH works. #301299
-	pax-mark -r "${D}${PREFIX}/libexec/gcc/${CTARGET}/${GCC_CONFIG_VER}/cc1"
-	pax-mark -r "${D}${PREFIX}/libexec/gcc/${CTARGET}/${GCC_CONFIG_VER}/cc1plus"
+	if tc_version_is_at_least 4.3 ; then
+		pax-mark -r "${D}${PREFIX}/libexec/gcc/${CTARGET}/${GCC_CONFIG_VER}/cc1"
+		pax-mark -r "${D}${PREFIX}/libexec/gcc/${CTARGET}/${GCC_CONFIG_VER}/cc1plus"
+	fi
+}
+
+gcc_slot_java() {
+	local x
+
+	# Move Java headers to compiler-specific dir
+	for x in "${D}"${PREFIX}/include/gc*.h "${D}"${PREFIX}/include/j*.h ; do
+		[[ -f ${x} ]] && mv -f "${x}" "${D}"${LIBPATH}/include/
+	done
+	for x in gcj gnu java javax org ; do
+		if [[ -d ${D}${PREFIX}/include/${x} ]] ; then
+			dodir /${LIBPATH}/include/${x}
+			mv -f "${D}"${PREFIX}/include/${x}/* "${D}"${LIBPATH}/include/${x}/
+			rm -rf "${D}"${PREFIX}/include/${x}
+		fi
+	done
+
+	if [[ -d ${D}${PREFIX}/lib/security ]] || [[ -d ${D}${PREFIX}/$(get_libdir)/security ]] ; then
+		dodir /${LIBPATH}/security
+		mv -f "${D}"${PREFIX}/lib*/security/* "${D}"${LIBPATH}/security
+		rm -rf "${D}"${PREFIX}/lib*/security
+	fi
+
+	# Move random gcj files to compiler-specific directories
+	for x in libgcj.spec logging.properties ; do
+		x="${D}${PREFIX}/lib/${x}"
+		[[ -f ${x} ]] && mv -f "${x}" "${D}"${LIBPATH}/
+	done
+
+	# Rename jar because it could clash with Kaffe's jar if this gcc is
+	# primary compiler (aka don't have the -<version> extension)
+	cd "${D}"${BINPATH}
+	[[ -f jar ]] && mv -f jar gcj-jar
 }
 
+# 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() {
+	# older versions of gcc did not support --print-multi-os-directory
+	tc_version_is_at_least 3.2 || return 0
+
+	local x 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}"
+
+		# 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}"
+			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}"${FROMDIR} >& /dev/null
+	done
+	find "${D}" -type d | xargs rmdir >& /dev/null
+}
 #----<< src_* >>----
 
 #---->> unorganized crap in need of refactoring follows
 
-should_we_gcc_config() {
-	# we always want to run gcc-config if we're bootstrapping, otherwise
-	# we might get stuck with the c-only stage1 compiler
-	use bootstrap && return 0
-	use build && return 0
+# gcc_quick_unpack will unpack the gcc tarball and patches in a way that is
+# consistant with the behavior of get_gcc_src_uri. The only patch it applies
+# itself is the branch update if present.
+#
+# Travis Tilley <lv@gentoo.org> (03 Sep 2004)
+#
+gcc_quick_unpack() {
+	pushd "${WORKDIR}" > /dev/null
+	export PATCH_GCC_VER=${PATCH_GCC_VER:-${GCC_RELEASE_VER}}
+	export UCLIBC_GCC_VER=${UCLIBC_GCC_VER:-${PATCH_GCC_VER}}
+	export PIE_GCC_VER=${PIE_GCC_VER:-${GCC_RELEASE_VER}}
+	export HTB_GCC_VER=${HTB_GCC_VER:-${GCC_RELEASE_VER}}
+	export SPECS_GCC_VER=${SPECS_GCC_VER:-${GCC_RELEASE_VER}}
+
+	if [[ -n ${GCC_A_FAKEIT} ]] ; then
+		unpack ${GCC_A_FAKEIT}
+	elif [[ -n ${PRERELEASE} ]] ; then
+		unpack gcc-${PRERELEASE}.tar.bz2
+	elif [[ -n ${SNAPSHOT} ]] ; then
+		unpack gcc-${SNAPSHOT}.tar.bz2
+	elif [[ ${PV} != *9999* ]] ; then
+		unpack gcc-${GCC_RELEASE_VER}.tar.bz2
+		# We want branch updates to be against a release tarball
+		if [[ -n ${BRANCH_UPDATE} ]] ; then
+			pushd "${S}" > /dev/null
+			epatch "${DISTDIR}"/gcc-${GCC_RELEASE_VER}-branch-update-${BRANCH_UPDATE}.patch.bz2
+			popd > /dev/null
+		fi
+	fi
+
+	if [[ -n ${D_VER} ]] && use d ; then
+		pushd "${S}"/gcc > /dev/null
+		unpack gdc-${D_VER}-src.tar.bz2
+		cd ..
+		ebegin "Adding support for the D language"
+		./gcc/d/setup-gcc.sh >& "${T}"/dgcc.log
+		if ! eend $? ; then
+			eerror "The D gcc package failed to apply"
+			eerror "Please include this log file when posting a bug report:"
+			eerror "  ${T}/dgcc.log"
+			die "failed to include the D language"
+		fi
+		popd > /dev/null
+	fi
+
+	[[ -n ${PATCH_VER} ]] && \
+		unpack gcc-${PATCH_GCC_VER}-patches-${PATCH_VER}.tar.bz2
+
+	[[ -n ${UCLIBC_VER} ]] && \
+		unpack gcc-${UCLIBC_GCC_VER}-uclibc-patches-${UCLIBC_VER}.tar.bz2
+
+	if want_pie ; then
+		if [[ -n ${PIE_CORE} ]] ; then
+			unpack ${PIE_CORE}
+		else
+			unpack gcc-${PIE_GCC_VER}-piepatches-v${PIE_VER}.tar.bz2
+		fi
+		[[ -n ${SPECS_VER} ]] && \
+			unpack gcc-${SPECS_GCC_VER}-specs-${SPECS_VER}.tar.bz2
+	fi
+
+	use_if_iuse boundschecking && unpack "bounds-checking-gcc-${HTB_GCC_VER}-${HTB_VER}.patch.bz2"
+
+	popd > /dev/null
+}
+
+do_gcc_HTB_patches() {
+	use_if_iuse boundschecking || return 0
+
+	# modify the bounds checking patch with a regression patch
+	epatch "${WORKDIR}/bounds-checking-gcc-${HTB_GCC_VER}-${HTB_VER}.patch"
+	BRANDING_GCC_PKGVERSION="${BRANDING_GCC_PKGVERSION}, HTB-${HTB_GCC_VER}-${HTB_VER}"
+}
+
+# do various updates to PIE logic
+do_gcc_PIE_patches() {
+	want_pie || return 0
+
+	use vanilla && return 0
+
+	if tc_version_is_at_least 4.3.2 ; then
+		guess_patch_type_in_dir "${WORKDIR}"/piepatch/
+		EPATCH_MULTI_MSG="Applying pie patches ..." \
+		epatch "${WORKDIR}"/piepatch/
+	else
+		guess_patch_type_in_dir "${WORKDIR}"/piepatch/upstream
+
+		# corrects startfile/endfile selection and shared/static/pie flag usage
+		EPATCH_MULTI_MSG="Applying upstream pie patches ..." \
+		epatch "${WORKDIR}"/piepatch/upstream
+		# adds non-default pie support (rs6000)
+		EPATCH_MULTI_MSG="Applying non-default pie patches ..." \
+		epatch "${WORKDIR}"/piepatch/nondef
+		# adds default pie support (rs6000 too) if DEFAULT_PIE[_SSP] is defined
+		EPATCH_MULTI_MSG="Applying default pie patches ..." \
+		epatch "${WORKDIR}"/piepatch/def
+	fi
+
+	# we want to be able to control the pie patch logic via something other
+	# than ALL_CFLAGS...
+	sed -e '/^ALL_CFLAGS/iHARD_CFLAGS = ' \
+		-e 's|^ALL_CFLAGS = |ALL_CFLAGS = $(HARD_CFLAGS) |' \
+		-i "${S}"/gcc/Makefile.in
+	# Need to add HARD_CFLAGS to ALL_CXXFLAGS on >= 4.7
+	if tc_version_is_at_least 4.7 ; then
+		sed -e '/^ALL_CXXFLAGS/iHARD_CFLAGS = ' \
+                        -e 's|^ALL_CXXFLAGS = |ALL_CXXFLAGS = $(HARD_CFLAGS) |' \
+                        -i "${S}"/gcc/Makefile.in
+	fi
 
+	BRANDING_GCC_PKGVERSION="${BRANDING_GCC_PKGVERSION}, pie-${PIE_VER}"
+}
+
+should_we_gcc_config() {
 	# if the current config is invalid, we definitely want a new one
 	# Note: due to bash quirkiness, the following must not be 1 line
 	local curr_config
@@ -1430,15 +1907,18 @@ should_we_gcc_config() {
 		# We don't want to switch from say gcc-3.3 to gcc-3.4 right in
 		# the middle of an emerge operation (like an 'emerge -e world'
 		# which could install multiple gcc versions).
-		einfo "The current gcc config appears valid, so it will not be"
-		einfo "automatically switched for you.	If you would like to"
-		einfo "switch to the newly installed gcc version, do the"
-		einfo "following:"
-		echo
-		einfo "gcc-config ${CTARGET}-${GCC_CONFIG_VER}"
-		einfo "source /etc/profile"
-		echo
-		ebeep
+		# Only warn if we're installing a pkg as we might be called from
+		# the pkg_{pre,post}rm steps.  #446830
+		if [[ ${EBUILD_PHASE} == *"inst" ]] ; then
+			einfo "The current gcc config appears valid, so it will not be"
+			einfo "automatically switched for you.  If you would like to"
+			einfo "switch to the newly installed gcc version, do the"
+			einfo "following:"
+			echo
+			einfo "gcc-config ${CTARGET}-${GCC_CONFIG_VER}"
+			einfo "source /etc/profile"
+			echo
+		fi
 		return 1
 	fi
 }
@@ -1465,14 +1945,33 @@ do_gcc_config() {
 		ewarn "due to enabling/disabling hardened or switching to a version"
 		ewarn "of gcc that doesnt create multiple specs files. The default"
 		ewarn "config will be used, and the previous preference forgotten."
-		ebeep
-		epause
 		use_specs=""
 	fi
 
 	gcc-config ${CTARGET}-${GCC_CONFIG_VER}${use_specs}
 }
 
+# This function allows us to gentoo-ize GCCs version number and bugzilla
+# URL without needing to use patches.
+gcc_version_patch() {
+	# gcc-4.3+ has configure flags (whoo!)
+	tc_version_is_at_least 4.3 && return 0
+
+	local version_string=${GCC_CONFIG_VER}
+	[[ -n ${BRANCH_UPDATE} ]] && version_string+=" ${BRANCH_UPDATE}"
+
+	einfo "patching gcc version: ${version_string} (${BRANDING_GCC_PKGVERSION})"
+
+	local gcc_sed=( -e 's:gcc\.gnu\.org/bugs\.html:bugs\.gentoo\.org/:' )
+	if grep -qs VERSUFFIX "${S}"/gcc/version.c ; then
+		gcc_sed+=( -e "/VERSUFFIX \"\"/s:\"\":\" (${BRANDING_GCC_PKGVERSION})\":" )
+	else
+		version_string="${version_string} (${BRANDING_GCC_PKGVERSION})"
+		gcc_sed+=( -e "/const char version_string\[\] = /s:= \".*\":= \"${version_string}\":" )
+	fi
+	sed -i "${gcc_sed[@]}" "${S}"/gcc/version.c || die
+}
+
 # This is a historical wart.  The original Gentoo/amd64 port used:
 #    lib32 - 32bit binaries (x86)
 #    lib64 - 64bit binaries (x86_64)
@@ -1495,35 +1994,30 @@ setup_multilib_osdirnames() {
 
 	# this only makes sense for some Linux targets
 	case ${CTARGET} in
-		x86_64*-linux*)    config="i386" ;;
-		powerpc64*-linux*) config="rs6000" ;;
-		sparc64*-linux*)   config="sparc" ;;
-		s390x*-linux*)     config="s390" ;;
-		*)	               return 0 ;;
+	x86_64*-linux*)    config="i386" ;;
+	powerpc64*-linux*) config="rs6000" ;;
+	sparc64*-linux*)   config="sparc" ;;
+	s390x*-linux*)     config="s390" ;;
+	*)	               return 0 ;;
 	esac
 	config+="/t-linux64"
 
+	local sed_args=()
+	if tc_version_is_at_least 4.6 ; then
+		sed_args+=( -e 's:$[(]call if_multiarch[^)]*[)]::g' )
+	fi
 	if [[ ${SYMLINK_LIB} == "yes" ]] ; then
 		einfo "updating multilib directories to be: ${libdirs}"
-		# drop the 4.6.2 stuff once 4.7 goes stable
-		set -- -e '/^MULTILIB_OSDIRNAMES.*lib32/s:[$][(]if.*):../lib32:'
+		if tc_version_is_at_least 4.6.4 || tc_version_is_at_least 4.7 ; then
+			sed_args+=( -e '/^MULTILIB_OSDIRNAMES.*lib32/s:[$][(]if.*):../lib32:' )
+		else
+			sed_args+=( -e "/^MULTILIB_OSDIRNAMES/s:=.*:= ${libdirs}:" )
+		fi
 	else
 		einfo "using upstream multilib; disabling lib32 autodetection"
-		set -- -r -e 's:[$][(]if.*,(.*)[)]:\1:'
+		sed_args+=( -r -e 's:[$][(]if.*,(.*)[)]:\1:' )
 	fi
-	sed -i "$@" "${S}"/gcc/config/${config} || die
-}
-
-disable_multilib_libjava() {
-	# We dont want a multilib libjava, so lets use this hack taken from fedora
-	sed -i -r \
-		-e 's/^((all:) all-redirect)/ifeq (\$(MULTISUBDIR),)\n\1\nelse\n\2\n\techo Multilib libjava disabled\nendif/' \
-		-e 's/^((install:) install-redirect)/ifeq (\$(MULTISUBDIR),)\n\1\nelse\n\2\n\techo Multilib libjava disabled\nendif/' \
-		-e 's/^((check:) check-redirect)/ifeq (\$(MULTISUBDIR),)\n\1\nelse\n\2\n\techo Multilib libjava disabled\nendif/' \
-		-e 's/^((all:) all-recursive)/ifeq (\$(MULTISUBDIR),)\n\1\nelse\n\2\n\techo Multilib libjava disabled\nendif/' \
-		-e 's/^((install:) install-recursive)/ifeq (\$(MULTISUBDIR),)\n\1\nelse\n\2\n\techo Multilib libjava disabled\nendif/' \
-		-e 's/^((check:) check-recursive)/ifeq (\$(MULTISUBDIR),)\n\1\nelse\n\2\n\techo Multilib libjava disabled\nendif/' \
-		"${S}"/libjava/Makefile.in || die
+	sed -i "${sed_args[@]}" "${S}"/gcc/config/${config} || die
 }
 
 # make sure the libtool archives have libdir set to where they actually
@@ -1550,6 +2044,7 @@ fix_libtool_libdir_paths() {
 }
 
 is_multilib() {
+	tc_version_is_at_least 3 || return 1
 	use multilib
 }
 


             reply	other threads:[~2013-10-16 20:09 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-10-16 20:09 Magnus Granberg [this message]
  -- strict thread matches above, loose matches on Subject: below --
2013-12-31 10:57 [gentoo-commits] proj/hardened-dev:testing commit in: eclass/ Magnus Granberg
2013-10-20 19:13 Magnus Granberg
2012-04-17 17:43 Magnus Granberg
2012-04-07 23:58 Magnus Granberg

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