tc-ld-disable-gold-for-libtool

# @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

}