Index: head/lib/libefivar/Makefile
===================================================================
--- head/lib/libefivar/Makefile
+++ head/lib/libefivar/Makefile
@@ -64,4 +64,4 @@
 
 .include <bsd.lib.mk>
 
-CFLAGS+= -Wno-cast-align -Wno-unused-parameter
+CFLAGS+= -fno-strict-aliasing -Wno-cast-align -Wno-unused-parameter