--- a/gcc/configure	2017-07-01 14:49:57.209440088 +0200
+++ b/gcc/configure	2017-07-01 15:17:58.873173992 +0200
@@ -7345,11 +7345,11 @@
 		# the assembler.  Perhaps it's better to figure out whether
 		# arbitrary sections are supported and try the test.
 		as_ver=`$gcc_cv_as --version 2>/dev/null | head -n 1`
-		if echo "$as_ver" | grep GNU > /dev/null; then
-			as_ver=`echo $as_ver | sed -e 's/GNU assembler \([0-9.][0-9.]*\).*/\1/'`
-			as_major=`echo $as_ver | sed 's/\..*//'`
-			as_minor=`echo $as_ver | sed 's/[^.]*\.\([0-9]*\).*/\1/'`
-			if test $as_major -eq 2 -a $as_minor -lt 11; then
+		if echo "$as_ver" | grep -q GNU; then
+			if echo "${as_ver##* }" | {
+				IFS=. read -r as_major as_minor _
+				test "$as_major" -eq 2 -a "$as_minor" -lt 11
+			} then
 				gcc_cv_as_leb128="no"
 			fi
 		fi