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Subject[PATCH] kbuild: Add DTC_CPP_FLAGS
Date
With this Patch we are able to change cpp-preprocessor options
(e.g. -D...) for using conditions (#ifdef) in devicetree files
and dynamically add include searchpaths

Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
---
scripts/Makefile.lib | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index 3fa32f83b2d7..c722a6c7786a 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -177,7 +177,7 @@ DTC_INCLUDE := $(srctree)/scripts/dtc/include-prefixes

dtc_cpp_flags = -Wp,-MD,$(depfile).pre.tmp -nostdinc \
$(addprefix -I,$(DTC_INCLUDE)) \
- -undef -D__DTS__
+ -undef -D__DTS__ $(DTC_CPP_FLAGS)

# Useful for describing the dependency of composite objects
# Usage:
--
2.17.1
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