Index: libyara/Makefile.am
--- libyara/Makefile.am.orig
+++ libyara/Makefile.am
@@ -107,7 +107,7 @@ AM_CFLAGS+=-g
 endif
 
 if OPTIMIZATION
-AM_CFLAGS+=-O3
+#AM_CFLAGS+=-O3
 else
 AM_CFLAGS+=-O0
 endif
