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50749d2ac3
Recent commits of DTC introduced new warnings checking PCI and simple buses, unit address formatting, and stricter node and property name checking. Disable the new DTC warnings by default. As before, warnings are enabled with W=*. The strict node and property name checks are a bit subjective, so they are only enabled for W=2. (This policy reflects the commit 8654cb8d0371 of Linux.) Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
81 lines
2.7 KiB
Makefile
81 lines
2.7 KiB
Makefile
# ==========================================================================
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#
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# make W=... settings
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#
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# W=1 - warnings that may be relevant and does not occur too often
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# W=2 - warnings that occur quite often but may still be relevant
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# W=3 - the more obscure warnings, can most likely be ignored
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#
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# $(call cc-option, -W...) handles gcc -W.. options which
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# are not supported by all versions of the compiler
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# ==========================================================================
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#
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# SPDX-License-Identifier: GPL-2.0
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#
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ifeq ("$(origin W)", "command line")
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export KBUILD_ENABLE_EXTRA_GCC_CHECKS := $(W)
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endif
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ifdef KBUILD_ENABLE_EXTRA_GCC_CHECKS
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warning- := $(empty)
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warning-1 := -Wextra -Wunused -Wno-unused-parameter
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warning-1 += -Wmissing-declarations
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warning-1 += -Wmissing-format-attribute
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warning-1 += $(call cc-option, -Wmissing-prototypes)
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warning-1 += -Wold-style-definition
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warning-1 += $(call cc-option, -Wmissing-include-dirs)
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warning-1 += $(call cc-option, -Wunused-but-set-variable)
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warning-1 += $(call cc-disable-warning, missing-field-initializers)
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warning-2 := -Waggregate-return
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warning-2 += -Wcast-align
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warning-2 += -Wdisabled-optimization
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warning-2 += -Wnested-externs
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warning-2 += -Wshadow
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warning-2 += $(call cc-option, -Wlogical-op)
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warning-2 += $(call cc-option, -Wmissing-field-initializers)
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warning-3 := -Wbad-function-cast
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warning-3 += -Wcast-qual
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warning-3 += -Wconversion
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warning-3 += -Wpacked
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warning-3 += -Wpadded
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warning-3 += -Wpointer-arith
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warning-3 += -Wredundant-decls
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warning-3 += -Wswitch-default
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warning-3 += $(call cc-option, -Wpacked-bitfield-compat)
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warning-3 += $(call cc-option, -Wvla)
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warning := $(warning-$(findstring 1, $(KBUILD_ENABLE_EXTRA_GCC_CHECKS)))
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warning += $(warning-$(findstring 2, $(KBUILD_ENABLE_EXTRA_GCC_CHECKS)))
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warning += $(warning-$(findstring 3, $(KBUILD_ENABLE_EXTRA_GCC_CHECKS)))
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ifeq ("$(strip $(warning))","")
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$(error W=$(KBUILD_ENABLE_EXTRA_GCC_CHECKS) is unknown)
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endif
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KBUILD_CFLAGS += $(warning)
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dtc-warning-2 += $(call dtc-option,-Wnode_name_chars_strict)
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dtc-warning-2 += $(call dtc-option,-Wproperty_name_chars_strict)
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dtc-warning := $(dtc-warning-$(findstring 1, $(KBUILD_ENABLE_EXTRA_GCC_CHECKS)))
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dtc-warning += $(dtc-warning-$(findstring 2, $(KBUILD_ENABLE_EXTRA_GCC_CHECKS)))
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dtc-warning += $(dtc-warning-$(findstring 3, $(KBUILD_ENABLE_EXTRA_GCC_CHECKS)))
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DTC_FLAGS += $(dtc-warning)
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else
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# Disable noisy checks by default
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DTC_FLAGS += $(call dtc-option,-Wno-unit_address_vs_reg)
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DTC_FLAGS += $(call dtc-option,-Wno-simple_bus_reg)
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DTC_FLAGS += $(call dtc-option,-Wno-unit_address_format)
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DTC_FLAGS += $(call dtc-option,-Wno-pci_bridge)
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DTC_FLAGS += $(call dtc-option,-Wno-pci_device_bus_num)
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DTC_FLAGS += $(call dtc-option,-Wno-pci_device_reg)
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endif
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