sde-build-tools: make sure we don't can't a .a for fl_wrapper

Signed-off-by: Alejandro Mery <amery@jpi.io>

bin/sde-build-tools

@@ -286,8 +286,9 @@ if [ ! -f $TOOLSDIR/.lastupdate ] ; then
 	# Flist Wrapper Library
 	#
 	if [ "$SDECFG_FLIST" = "flwrapper" ] ; then
-		FLWRAPPER_LIBC=$(ls -1 "$xroot"/{lib64,lib}/libc[.-]* \
-			"$xroot"/{lib64,lib}/*/libc[.-]* 2>/dev/null |
+		FLWRAPPER_LIBC=$(ls -1 \
+			"$xroot"/lib*/{*/,}libc[.-]* 2> /dev/null |
+			grep -v '\.a$' | grep '\.so' |
 			sort -V | head -n1 )
 		if [ ! -f "$FLWRAPPER_LIBC" ]; then
 			abort 'Unable to detect /lib/libc.* for flwrapper'