diff --git a/Makefile b/Makefile
index 4d88157..9e46e28 100644
--- a/Makefile
+++ b/Makefile
@@ -16,7 +16,7 @@ EXTRAVERSION =
 LOCAL_VERSION =
 CONFIG_LOCALVERSION =
 
-CPPFLAGS = -I libfdt -I .
+CPPFLAGS = -I libfdt -I . $(EXTRA_CXXFLAGS)
 WARNINGS = -Wall -Wpointer-arith -Wcast-qual -Wnested-externs \
 	-Wstrict-prototypes -Wmissing-prototypes -Wredundant-decls -Wshadow
 CFLAGS = -g -Os $(SHAREDLIB_CFLAGS) -Werror $(WARNINGS) $(EXTRA_CFLAGS)