From: Stephen Warren <swar...@nvidia.com>
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 <swar...@nvidia.com>
Acked-by: Simon Glass <s...@chromium.org>
---
dts/Makefile | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/dts/Makefile b/dts/Makefile
index 805d2cc..b125bd3 100644
--- a/dts/Makefile
+++ b/dts/Makefile
@@ -37,7 +37,7 @@ 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 \
--
1.7.10.4
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