From: Jeroen Hofstee Date: Wed, 30 Jul 2014 19:54:51 +0000 (+0200) Subject: cc-option: also detect unsupported warnings options X-Git-Tag: KARO-TXA5-2015-06-26~692^2~7 X-Git-Url: https://git.karo-electronics.de/?p=karo-tx-uboot.git;a=commitdiff_plain;h=1401d87b444bf114528e997db552d22142918d33 cc-option: also detect unsupported warnings options 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 cc: Tom Rini Signed-off-by: Jeroen Hofstee --- diff --git a/scripts/Kbuild.include b/scripts/Kbuild.include index c664e39be6..4c333599c1 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