projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| a86fe353 MY |
1 | # ========================================================================== |
| 2 | # | |
| 3 | # make W=... settings | |
| 4 | # | |
| 5 | # W=1 - warnings that may be relevant and does not occur too often | |
| 6 | # W=2 - warnings that occur quite often but may still be relevant | |
| 7 | # W=3 - the more obscure warnings, can most likely be ignored | |
| 8 | # | |
| 9 | # $(call cc-option, -W...) handles gcc -W.. options which | |
| 10 | # are not supported by all versions of the compiler | |
| 11 | # ========================================================================== | |
| 12 | ||
| 13 | ifeq ("$(origin W)", "command line") | |
| 14 | export KBUILD_ENABLE_EXTRA_GCC_CHECKS := $(W) | |
| 15 | endif | |
| 16 | ||
| 17 | ifdef KBUILD_ENABLE_EXTRA_GCC_CHECKS | |
| 18 | warning- := $(empty) | |
| 19 | ||
| 20 | warning-1 := -Wextra -Wunused -Wno-unused-parameter | |
| 21 | warning-1 += -Wmissing-declarations | |
| 22 | warning-1 += -Wmissing-format-attribute | |
| 23 | warning-1 += $(call cc-option, -Wmissing-prototypes) | |
| 24 | warning-1 += -Wold-style-definition | |
| 25 | warning-1 += $(call cc-option, -Wmissing-include-dirs) | |
| 26 | warning-1 += $(call cc-option, -Wunused-but-set-variable) | |
| 27 | warning-1 += $(call cc-disable-warning, missing-field-initializers) | |
| 28 | ||
| a86fe353 MY |
29 | warning-2 := -Waggregate-return |
| 30 | warning-2 += -Wcast-align | |
| 31 | warning-2 += -Wdisabled-optimization | |
| 32 | warning-2 += -Wnested-externs | |
| 33 | warning-2 += -Wshadow | |
| 34 | warning-2 += $(call cc-option, -Wlogical-op) | |
| 35 | warning-2 += $(call cc-option, -Wmissing-field-initializers) | |
| 36 | ||
| 37 | warning-3 := -Wbad-function-cast | |
| 38 | warning-3 += -Wcast-qual | |
| 39 | warning-3 += -Wconversion | |
| 40 | warning-3 += -Wpacked | |
| 41 | warning-3 += -Wpadded | |
| 42 | warning-3 += -Wpointer-arith | |
| 43 | warning-3 += -Wredundant-decls | |
| 44 | warning-3 += -Wswitch-default | |
| 45 | warning-3 += $(call cc-option, -Wpacked-bitfield-compat) | |
| 46 | warning-3 += $(call cc-option, -Wvla) | |
| 47 | ||
| 48 | warning := $(warning-$(findstring 1, $(KBUILD_ENABLE_EXTRA_GCC_CHECKS))) | |
| 49 | warning += $(warning-$(findstring 2, $(KBUILD_ENABLE_EXTRA_GCC_CHECKS))) | |
| 50 | warning += $(warning-$(findstring 3, $(KBUILD_ENABLE_EXTRA_GCC_CHECKS))) | |
| 51 | ||
| 52 | ifeq ("$(strip $(warning))","") | |
| 53 | $(error W=$(KBUILD_ENABLE_EXTRA_GCC_CHECKS) is unknown) | |
| 54 | endif | |
| 55 | ||
| 56 | KBUILD_CFLAGS += $(warning) | |
| 26ea6bb1 BW |
57 | else |
| 58 | ||
| 59 | ifeq ($(COMPILER),clang) | |
| 60 | KBUILD_CFLAGS += $(call cc-disable-warning, initializer-overrides) | |
| 61 | KBUILD_CFLAGS += $(call cc-disable-warning, unused-value) | |
| 62 | KBUILD_CFLAGS += $(call cc-disable-warning, format) | |
| 63 | KBUILD_CFLAGS += $(call cc-disable-warning, unknown-warning-option) | |
| 64 | KBUILD_CFLAGS += $(call cc-disable-warning, sign-compare) | |
| 65 | KBUILD_CFLAGS += $(call cc-disable-warning, format-zero-length) | |
| 66 | KBUILD_CFLAGS += $(call cc-disable-warning, uninitialized) | |
| 67 | endif | |
| a86fe353 | 68 | endif |