Tools build can fail because -stack-protector-all is missing

--- a/tools/Makefile.am.orig	2019-12-25 18:51:48.947959673 +0800
+++ b/tools/Makefile.am	2019-12-25 18:51:56.165952726 +0800
@@ -8,6 +8,7 @@ AM_CPPFLAGS = \
 
 AM_LDFLAGS = \
 	$(LIBRT) \
+	$(WARN_LDFLAGS) \
 	$(NULL)
 
 noinst_PROGRAMS = \
