--- xen-4.4.0/Config.mk.orig 2014-04-29 20:54:43.117010822 +0100
+++ xen-4.4.0/Config.mk 2014-04-29 20:58:23.100055325 +0100
@@ -188,6 +188,8 @@
CFLAGS += -std=gnu99
CFLAGS += -Wall -Wstrict-prototypes
+# add temporary build flags to identify build issues using gcc 4.9.0
+CFLAGS += -Wno-error=maybe-uninitialized
# Clang complains about macros that expand to 'if ( ( foo == bar ) ) ...'
# and is over-zealous with the printf format lint