Index: x11vnc-0.9.17/src/Makefile.am
===================================================================
--- x11vnc-0.9.17.orig/src/Makefile.am
+++ x11vnc-0.9.17/src/Makefile.am
@@ -147,3 +147,8 @@ x11vnc_LDADD = \
 	@XI2_LIBS@ \
 	@CAIRO_LIBS@ \
 	$(LD_CYGIPC)
+
+CFLAGS_avahi.c = $(CFLAGS) -fstack-protector
+CFLAGS_connections.c = $(CFLAGS) -fstack-protector
+CFLAGS_uinput.c = $(CFLAGS) -fstack-protector
+CFLAGS_userinput.c = $(CFLAGS) -fstack-protector
