dts/Makefile: pass -undef -D__DTS__ to cpp
authorStephen Warren <swarren@nvidia.com>
Wed, 24 Jul 2013 17:09:24 +0000 (10:09 -0700)
committerTom Rini <trini@ti.com>
Fri, 2 Aug 2013 22:30:11 +0000 (18:30 -0400)
This brings U-Boot's cpp invocation into line with the way the Linux
kernel invokes cpp on device trees. Consistency will be useful to ensure
*.dts is portable between the two.

-undef also has the added advantage of not defining "linux", so DT
property names such as "linux,keymap" don't get mangled.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Simon Glass <sjg@chromium.org>
dts/Makefile

index ccd552f..3cf991e 100644 (file)
@@ -21,7 +21,7 @@ DTS_INCDIRS =  $(SRCTREE)/board/$(VENDOR)/$(BOARD)/dts
 DTS_INCDIRS += $(SRCTREE)/board/$(VENDOR)/dts
 DTS_INCDIRS += $(SRCTREE)/arch/$(ARCH)/dts
 
-DTS_CPPFLAGS := -x assembler-with-cpp \
+DTS_CPPFLAGS := -x assembler-with-cpp -undef -D__DTS__ \
                -nostdinc $(addprefix -I,$(DTS_INCDIRS))
 
 DTC_FLAGS := -R 4 -p 0x1000 \