[patch] Switch to ld.bfd if ld.gold is in use

patch (text/plain), 1.80 KB, created by Ian Stakenvicius (RETIRED) on 2016-10-05 20:45:07 UTC

diff --git a/sys-fs/fuse/fuse-2.9.7.ebuild b/sys-fs/fuse/fuse-2.9.7.ebuild
index d440951..43c568c 100644
--- a/sys-fs/fuse/fuse-2.9.7.ebuild
+++ b/sys-fs/fuse/fuse-2.9.7.ebuild
@@ -39,6 +39,7 @@ src_prepare() {
 }
 
 src_configure() {
+	tc-ld-disable-gold-for-libtool
 	econf \
 		INIT_D_PATH="${EPREFIX}/etc/init.d" \
 		MOUNT_FUSE_PATH="${EPREFIX}/sbin" \
@@ -82,3 +83,45 @@ src_install() {
 		#user_allow_other
 	EOF
 }
+
+# @FUNCTION: tc-ld-disable-gold-for-libtool
+# @USAGE: [toolchain prefix]
+# @DESCRIPTION:
+# If the gold linker is currently selected, configure the compilation
+# settings so that we use the older bfd linker instead.
+# Special version that prepends '-Xlinker' for libtool
+tc-ld-disable-gold-for-libtool() {
+	if ! tc-ld-is-gold "$@" ; then
+		# They aren't using gold, so nothing to do!
+		return
+	fi
+
+	ewarn "Forcing usage of the BFD linker instead of GOLD"
+
+	# Set up LD to point directly to bfd if it's available.
+	# We need to extract the first word in case there are flags appended
+	# to its value (like multilib).  #545218
+	local ld=$(tc-getLD "$@")
+	local bfd_ld="${ld%% *}.bfd"
+	local path_ld=$(which "${bfd_ld}" 2>/dev/null)
+	[[ -e ${path_ld} ]] && export LD=${bfd_ld}
+
+	# Set up LDFLAGS to select gold based on the gcc version.
+	local major=$(gcc-major-version "$@")
+	local minor=$(gcc-minor-version "$@")
+	if [[ ${major} -lt 4 ]] || [[ ${major} -eq 4 && ${minor} -lt 8 ]] ; then
+		# <=gcc-4.7 requires some coercion.  Only works if bfd exists.
+		if [[ -e ${path_ld} ]] ; then
+			local d="${T}/bfd-linker"
+			mkdir -p "${d}"
+			ln -sf "${path_ld}" "${d}"/ld
+			export LDFLAGS="${LDFLAGS} -Xlinker -B${d}"
+		else
+			die "unable to locate a BFD linker to bypass gold"
+		fi
+	else
+		# gcc-4.8+ supports -fuse-ld directly.
+		export LDFLAGS="${LDFLAGS} -Xlinker -fuse-ld=bfd"
+	fi
+}
+