183d290c5STom Rini# SPDX-License-Identifier: GPL-2.0 26419e144SMasahiro Yamada# ========================================================================== 36419e144SMasahiro Yamada# 46419e144SMasahiro Yamada# make W=... settings 56419e144SMasahiro Yamada# 66419e144SMasahiro Yamada# W=1 - warnings that may be relevant and does not occur too often 76419e144SMasahiro Yamada# W=2 - warnings that occur quite often but may still be relevant 86419e144SMasahiro Yamada# W=3 - the more obscure warnings, can most likely be ignored 96419e144SMasahiro Yamada# 106419e144SMasahiro Yamada# $(call cc-option, -W...) handles gcc -W.. options which 116419e144SMasahiro Yamada# are not supported by all versions of the compiler 126419e144SMasahiro Yamada# ========================================================================== 136419e144SMasahiro Yamada 146419e144SMasahiro Yamadaifeq ("$(origin W)", "command line") 156419e144SMasahiro Yamada export KBUILD_ENABLE_EXTRA_GCC_CHECKS := $(W) 166419e144SMasahiro Yamadaendif 176419e144SMasahiro Yamada 186419e144SMasahiro Yamadaifdef KBUILD_ENABLE_EXTRA_GCC_CHECKS 196419e144SMasahiro Yamadawarning- := $(empty) 206419e144SMasahiro Yamada 216419e144SMasahiro Yamadawarning-1 := -Wextra -Wunused -Wno-unused-parameter 226419e144SMasahiro Yamadawarning-1 += -Wmissing-declarations 236419e144SMasahiro Yamadawarning-1 += -Wmissing-format-attribute 246419e144SMasahiro Yamadawarning-1 += $(call cc-option, -Wmissing-prototypes) 256419e144SMasahiro Yamadawarning-1 += -Wold-style-definition 266419e144SMasahiro Yamadawarning-1 += $(call cc-option, -Wmissing-include-dirs) 276419e144SMasahiro Yamadawarning-1 += $(call cc-option, -Wunused-but-set-variable) 286419e144SMasahiro Yamadawarning-1 += $(call cc-disable-warning, missing-field-initializers) 296419e144SMasahiro Yamada 306419e144SMasahiro Yamadawarning-2 := -Waggregate-return 316419e144SMasahiro Yamadawarning-2 += -Wcast-align 326419e144SMasahiro Yamadawarning-2 += -Wdisabled-optimization 336419e144SMasahiro Yamadawarning-2 += -Wnested-externs 346419e144SMasahiro Yamadawarning-2 += -Wshadow 356419e144SMasahiro Yamadawarning-2 += $(call cc-option, -Wlogical-op) 366419e144SMasahiro Yamadawarning-2 += $(call cc-option, -Wmissing-field-initializers) 376419e144SMasahiro Yamada 386419e144SMasahiro Yamadawarning-3 := -Wbad-function-cast 396419e144SMasahiro Yamadawarning-3 += -Wcast-qual 406419e144SMasahiro Yamadawarning-3 += -Wconversion 416419e144SMasahiro Yamadawarning-3 += -Wpacked 426419e144SMasahiro Yamadawarning-3 += -Wpadded 436419e144SMasahiro Yamadawarning-3 += -Wpointer-arith 446419e144SMasahiro Yamadawarning-3 += -Wredundant-decls 456419e144SMasahiro Yamadawarning-3 += -Wswitch-default 466419e144SMasahiro Yamadawarning-3 += $(call cc-option, -Wpacked-bitfield-compat) 476419e144SMasahiro Yamadawarning-3 += $(call cc-option, -Wvla) 486419e144SMasahiro Yamada 496419e144SMasahiro Yamadawarning := $(warning-$(findstring 1, $(KBUILD_ENABLE_EXTRA_GCC_CHECKS))) 506419e144SMasahiro Yamadawarning += $(warning-$(findstring 2, $(KBUILD_ENABLE_EXTRA_GCC_CHECKS))) 516419e144SMasahiro Yamadawarning += $(warning-$(findstring 3, $(KBUILD_ENABLE_EXTRA_GCC_CHECKS))) 526419e144SMasahiro Yamada 536419e144SMasahiro Yamadaifeq ("$(strip $(warning))","") 546419e144SMasahiro Yamada $(error W=$(KBUILD_ENABLE_EXTRA_GCC_CHECKS) is unknown) 556419e144SMasahiro Yamadaendif 566419e144SMasahiro Yamada 576419e144SMasahiro YamadaKBUILD_CFLAGS += $(warning) 584b83f0d9SMasahiro Yamada 59c0e032e0STom Rinidtc-warning-2 += -Wnode_name_chars_strict 60c0e032e0STom Rinidtc-warning-2 += -Wproperty_name_chars_strict 6150749d2aSMasahiro Yamada 6250749d2aSMasahiro Yamadadtc-warning := $(dtc-warning-$(findstring 1, $(KBUILD_ENABLE_EXTRA_GCC_CHECKS))) 6350749d2aSMasahiro Yamadadtc-warning += $(dtc-warning-$(findstring 2, $(KBUILD_ENABLE_EXTRA_GCC_CHECKS))) 6450749d2aSMasahiro Yamadadtc-warning += $(dtc-warning-$(findstring 3, $(KBUILD_ENABLE_EXTRA_GCC_CHECKS))) 6550749d2aSMasahiro Yamada 6650749d2aSMasahiro YamadaDTC_FLAGS += $(dtc-warning) 6750749d2aSMasahiro Yamada 684b83f0d9SMasahiro Yamadaelse 694b83f0d9SMasahiro Yamada 704b83f0d9SMasahiro Yamada# Disable noisy checks by default 71c0e032e0STom RiniDTC_FLAGS += -Wno-unit_address_vs_reg 72c0e032e0STom RiniDTC_FLAGS += -Wno-simple_bus_reg 73c0e032e0STom RiniDTC_FLAGS += -Wno-unit_address_format 74c0e032e0STom RiniDTC_FLAGS += -Wno-pci_bridge 75c0e032e0STom RiniDTC_FLAGS += -Wno-pci_device_bus_num 76c0e032e0STom RiniDTC_FLAGS += -Wno-pci_device_reg 77*00717b00STom RiniDTC_FLAGS += -Wno-avoid_unnecessary_addr_size 78*00717b00STom RiniDTC_FLAGS += -Wno-alias_paths 794b83f0d9SMasahiro Yamada 806419e144SMasahiro Yamadaendif 81