By default clang will echo a warning if a warning option is unknown. Turning warnings into errors when polling for options also catches such cases and prevents passing arguments to the compiler which cause warnings.
cc: Masahiro Yamada <yamad...@jp.panasonic.com> cc: Tom Rini <tr...@ti.com> Signed-off-by: Jeroen Hofstee <jer...@myspectrum.nl> --- scripts/Kbuild.include | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/scripts/Kbuild.include b/scripts/Kbuild.include index c664e39..4c33359 100644 --- a/scripts/Kbuild.include +++ b/scripts/Kbuild.include @@ -113,12 +113,12 @@ as-instr = $(call try-run,\ # Usage: cflags-y += $(call cc-option,-march=winchip-c6,-march=i586) cc-option = $(call try-run,\ - $(CC) $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) $(1) -c -x c /dev/null -o "$$TMP",$(1),$(2)) + $(CC) -Werror $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) $(1) -c -x c /dev/null -o "$$TMP",$(1),$(2)) # cc-option-yn # Usage: flag := $(call cc-option-yn,-march=winchip-c6) cc-option-yn = $(call try-run,\ - $(CC) $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) $(1) -c -x c /dev/null -o "$$TMP",y,n) + $(CC) -Werror $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) $(1) -c -x c /dev/null -o "$$TMP",y,n) # cc-option-align # Prefix align with either -falign or -malign -- 1.9.1 _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
