mirror of
https://github.com/u-boot/u-boot.git
synced 2025-04-11 07:24:46 +00:00
9805321dfd
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>
71 lines
2.5 KiB
Text
71 lines
2.5 KiB
Text
# SPDX-License-Identifier: GPL-2.0
|
|
# ==========================================================================
|
|
#
|
|
# make W=... settings
|
|
#
|
|
# W=1 - warnings that may be relevant and does not occur too often
|
|
# W=2 - warnings that occur quite often but may still be relevant
|
|
# W=3 - the more obscure warnings, can most likely be ignored
|
|
#
|
|
# $(call cc-option, -W...) handles gcc -W.. options which
|
|
# are not supported by all versions of the compiler
|
|
# ==========================================================================
|
|
|
|
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
|
|
|
|
ifdef KBUILD_ENABLE_EXTRA_GCC_CHECKS
|
|
warning- := $(empty)
|
|
|
|
warning-1 := -Wextra -Wunused -Wno-unused-parameter
|
|
warning-1 += -Wmissing-declarations
|
|
warning-1 += -Wmissing-format-attribute
|
|
warning-1 += $(call cc-option, -Wmissing-prototypes)
|
|
warning-1 += -Wold-style-definition
|
|
warning-1 += $(call cc-option, -Wmissing-include-dirs)
|
|
warning-1 += $(call cc-option, -Wunused-but-set-variable)
|
|
warning-1 += $(call cc-option, -Wunused-const-variable)
|
|
warning-1 += $(call cc-option, -Wpacked-not-aligned)
|
|
warning-1 += $(call cc-option, -Wstringop-truncation)
|
|
warning-1 += $(call cc-disable-warning, missing-field-initializers)
|
|
warning-1 += $(call cc-disable-warning, sign-compare)
|
|
|
|
warning-2 := -Waggregate-return
|
|
warning-2 += -Wcast-align
|
|
warning-2 += -Wdisabled-optimization
|
|
warning-2 += -Wnested-externs
|
|
warning-2 += -Wshadow
|
|
warning-2 += $(call cc-option, -Wlogical-op)
|
|
warning-2 += $(call cc-option, -Wmissing-field-initializers)
|
|
warning-2 += $(call cc-option, -Wsign-compare)
|
|
warning-2 += $(call cc-option, -Wmaybe-uninitialized)
|
|
warning-2 += $(call cc-option, -Wunused-macros)
|
|
|
|
warning-3 := -Wbad-function-cast
|
|
warning-3 += -Wcast-qual
|
|
warning-3 += -Wconversion
|
|
warning-3 += -Wpacked
|
|
warning-3 += -Wpadded
|
|
warning-3 += -Wpointer-arith
|
|
warning-3 += -Wredundant-decls
|
|
warning-3 += -Wswitch-default
|
|
warning-3 += $(call cc-option, -Wpacked-bitfield-compat)
|
|
warning-3 += $(call cc-option, -Wvla)
|
|
|
|
warning := $(warning-$(findstring 1, $(KBUILD_ENABLE_EXTRA_GCC_CHECKS)))
|
|
warning += $(warning-$(findstring 2, $(KBUILD_ENABLE_EXTRA_GCC_CHECKS)))
|
|
warning += $(warning-$(findstring 3, $(KBUILD_ENABLE_EXTRA_GCC_CHECKS)))
|
|
|
|
ifeq ("$(strip $(warning))","")
|
|
$(error W=$(KBUILD_ENABLE_EXTRA_GCC_CHECKS) is unknown)
|
|
endif
|
|
|
|
KBUILD_CFLAGS += $(warning)
|
|
|
|
endif
|