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Kconfig: Introduce CONFIG_WERROR

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Add a new config option under "General setup" to enable the -Werror flag
when building U-Boot. This is useful during development to help catch
mistakes.

This is based on a similar config option added to the Linux kernel by
Linus in 2021 - see Linux commit 3fe617ccafd6 ("Enable '-Werror' by
default for all kernel builds"). The modification of KBUILD_CFLAGS is
done in Makefile.extrawarn, matching where it was moved in the kernel by
Linux commit e88ca24319e4 ("kbuild: consolidate warning flags in
scripts/Makefile.extrawarn").

Signed-off-by: Paul Barker <paul.barker.ct@bp.renesas.com>
This commit is contained in:
Paul Barker
2025-02-28 10:04:33 +00:00
committed by Tom Rini
parent babc6eef2f
commit 9805321dfd
2 changed files with 14 additions and 0 deletions
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3
scripts/Makefile.extrawarn
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@@ -13,6 +13,9 @@
KBUILD_CFLAGS += $(call cc-disable-warning, packed-not-aligned)
KBUILD_CPPFLAGS-$(CONFIG_WERROR) += -Werror
KBUILD_CPPFLAGS += $(KBUILD_CPPFLAGS-y)
ifeq ("$(origin W)", "command line")
export KBUILD_ENABLE_EXTRA_GCC_CHECKS := $(W)
endif