--- gcc/build-make	2018/04/24 18:02:15	1.1.1.1
+++ gcc/build-make	2018/04/24 18:18:57	1.1.1.2
@@ -19,6 +19,10 @@ HOST_ALLOCA=$(ALLOCA)
 HOST_MALLOC=$(MALLOC)
 HOST_OBSTACK=$(OBSTACK)
 
+# To build the native compiler with the cross compiler, the headers 
+# for the target are already fixed. And /usr/include is for host, not
+# target.
+FIXINCLUDES=Makefile.in
 
 # Cause installation using install-build. We do nothing here.
 INSTALL_TARGET = install-build