kbuild: Check for unknown options with cc-option usage in Kconfig and clang

[linux.git] / scripts / Kconfig.include

diff --git a/scripts/Kconfig.include b/scripts/Kconfig.include
index 8a5c4d645eb140447de07224a7566643a96386c2..4bbf4fc163a297064f12f8d24531da537fe849fc 100644 (file)
--- a/scripts/Kconfig.include
+++ b/scripts/Kconfig.include
@@ -25,7 +25,7 @@ failure = $(if-success,$(1),n,y)
 
 # $(cc-option,<flag>)
 # Return y if the compiler supports <flag>, n otherwise
-cc-option = $(success,$(CC) -Werror $(1) -E -x c /dev/null -o /dev/null)
+cc-option = $(success,$(CC) -Werror $(CLANG_FLAGS) $(1) -E -x c /dev/null -o /dev/null)
 
 # $(ld-option,<flag>)
 # Return y if the linker supports <flag>, n otherwise