--- xen-4.5.0-testing/tools/blktap/drivers/Makefile.orig 2015-04-08 09:20:08.817373085 +0000
+++ xen-4.5.0-testing/tools/blktap/drivers/Makefile 2015-04-08 09:20:55.738897365 +0000
@@ -6,6 +6,9 @@
CFLAGS += -Werror
CFLAGS += -Wno-unused
+ifeq ($(call cc-ver,$(CC),0x040900),y)
+$(call cc-option-add,CFLAGS,CC,-Wno-error=maybe-uninitialized)
+endif
CFLAGS += -I../lib
CFLAGS += $(CFLAGS_libxenctrl)
CFLAGS += $(CFLAGS_libxenstore)
--- xen-4.5.0-testing/tools/blktap2/drivers/Makefile.orig 2015-04-08 11:25:54.974241326 +0200
+++ xen-4.5.0-testing/tools/blktap2/drivers/Makefile 2015-04-08 11:26:10.150411238 +0200
@@ -11,6 +11,7 @@
+$(call cc-option-add,CFLAGS,CC,-Wno-error=array-bounds)
CFLAGS += -fno-strict-aliasing
CFLAGS += -I$(BLKTAP_ROOT)/include -I$(BLKTAP_ROOT)/drivers