[linux-yocto] [PATCH 18/25] kbuild: Enable DT symbols when CONFIG_OF_OVERLAY is used

[Meng.Li at windriver.com]

From: Geert Uytterhoeven <geert+renesas at glider.be>

commit  ed1eb10b8dd43ea1447e5adc47bcd52ddc3b5c25 from
https://github.com/altera-opensource/linux-socfpga.git

Signed-off-by: Geert Uytterhoeven <geert+renesas at glider.be>
Signed-off-by: Meng Li <Meng.Li at windriver.com>
---
 scripts/Makefile.lib |    4 ++++
 1 file changed, 4 insertions(+)

diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index 58c05e5..c35bbaa 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -313,6 +313,10 @@ cmd_dt_S_dtb=						\
 $(obj)/%.dtb.S: $(obj)/%.dtb
 	$(call cmd,dt_S_dtb)
 
+ifeq ($(CONFIG_OF_OVERLAY),y)
+DTC_FLAGS += -@
+endif
+
 quiet_cmd_dtc = DTC     $@
 cmd_dtc = mkdir -p $(dir ${dtc-tmp}) ; \
 	$(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \
-- 
1.7.9.5