[PATCH] kbuild: use -E instead of -c for __cc-option

[Masahiro Yamada]

Use -E instead of -c like scripts/Kconfig.include
This makes the compiler flag evaluation slightly faster.

Signed-off-by: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx>
---

 scripts/Kbuild.include | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/Kbuild.include b/scripts/Kbuild.include
index f641bb0aa63f..e4329b92d165 100644
--- a/scripts/Kbuild.include
+++ b/scripts/Kbuild.include
@@ -113,7 +113,7 @@ as-instr = $(call try-run,\
 # __cc-option
 # Usage: MY_CFLAGS += $(call __cc-option,$(CC),$(MY_CFLAGS),-march=winchip-c6,-march=i586)
 __cc-option = $(call try-run,\
-	$(1) -Werror $(2) $(3) -c -x c /dev/null -o "$$TMP",$(3),$(4))
+	$(1) -Werror $(2) $(3) -E -x c /dev/null -o "$$TMP",$(3),$(4))
 
 # Do not attempt to build with gcc plugins during cc-option tests.
 # (And this uses delayed resolution so the flags will be up to date.)
-- 
2.17.1