Lines Matching +full:clang +full:- +full:format

1 # SPDX-License-Identifier: GPL-2.0
10 KBUILD_CFLAGS += -Wall
11 KBUILD_CFLAGS += -Wundef
12 KBUILD_CFLAGS += -Werror=implicit-function-declaration
13 KBUILD_CFLAGS += -Werror=implicit-int
14 KBUILD_CFLAGS += -Werror=return-type
15 KBUILD_CFLAGS += -Werror=strict-prototypes
16 KBUILD_CFLAGS += -Wno-format-security
17 KBUILD_CFLAGS += -Wno-trigraphs
18 KBUILD_CFLAGS += $(call cc-disable-warning,frame-address,)
19 KBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member)
20 KBUILD_CFLAGS += -Wmissing-declarations
21 KBUILD_CFLAGS += -Wmissing-prototypes
24 KBUILD_CFLAGS += -Wframe-larger-than=$(CONFIG_FRAME_WARN)
27 KBUILD_CPPFLAGS-$(CONFIG_WERROR) += -Werror
28 KBUILD_CPPFLAGS += $(KBUILD_CPPFLAGS-y)
29 KBUILD_CFLAGS-$(CONFIG_CC_NO_ARRAY_BOUNDS) += -Wno-array-bounds
32 # The kernel builds with '-std=gnu11' so use of GNU extensions is acceptable.
33 KBUILD_CFLAGS += -Wno-gnu
35 # Clang checks for overflow/truncation with '%p', while GCC does not:
37 KBUILD_CFLAGS += $(call cc-disable-warning, format-overflow-non-kprintf)
38 KBUILD_CFLAGS += $(call cc-disable-warning, format-truncation-non-kprintf)
42 KBUILD_CFLAGS += -Wno-main
46 KBUILD_CFLAGS += $(call cc-disable-warning, dangling-pointer)
49 KBUILD_CFLAGS += -Wvla
52 KBUILD_CFLAGS += -Wno-pointer-sign
56 # globally built with -Wcast-function-type.
57 KBUILD_CFLAGS += $(call cc-option, -Wcast-function-type)
61 # -Wno-alloc-size-larger-than would normally be used here, earlier versions
63 # warnings are produced (?!). Using -Walloc-size-larger-than=SIZE_MAX
70 KBUILD_CFLAGS-$(call gcc-min-version, 90100) += -Wno-alloc-size-larger-than
71 KBUILD_CFLAGS += $(KBUILD_CFLAGS-y) $(CONFIG_CC_IMPLICIT_FALLTHROUGH)
73 # Prohibit date/time macros, which would make the build non-deterministic
74 KBUILD_CFLAGS += -Werror=date-time
77 KBUILD_CFLAGS += $(call cc-option,-Werror=incompatible-pointer-types)
80 KBUILD_CFLAGS += $(call cc-option,-Werror=designated-init)
83 KBUILD_CFLAGS += $(call cc-option,-Wenum-conversion)
86 KBUILD_CFLAGS += $(call cc-option,-fzero-init-padding-bits=all)
88 KBUILD_CFLAGS += -Wextra
89 KBUILD_CFLAGS += -Wunused
92 # W=1 - warnings which may be relevant and do not occur too often
96 KBUILD_CFLAGS += -Wmissing-format-attribute
97 KBUILD_CFLAGS += -Wmissing-include-dirs
98 KBUILD_CFLAGS += $(call cc-option, -Wunused-const-variable)
100 KBUILD_CPPFLAGS += -Wundef
101 KBUILD_CPPFLAGS += -DKBUILD_EXTRA_WARN1
106 # Suppress them by using -Wno... except for W=1.
107 KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable)
108 KBUILD_CFLAGS += $(call cc-disable-warning, unused-const-variable)
109 KBUILD_CFLAGS += $(call cc-disable-warning, packed-not-aligned)
110 KBUILD_CFLAGS += $(call cc-disable-warning, format-overflow)
112 KBUILD_CFLAGS += $(call cc-disable-warning, format-truncation)
114 KBUILD_CFLAGS += $(call cc-disable-warning, stringop-truncation)
116 KBUILD_CFLAGS += -Wno-override-init # alias for -Wno-initializer-overrides in clang
119 # Clang before clang-16 would warn on default argument promotions.
120 ifneq ($(call clang-min-version, 160000),y)
121 # Disable -Wformat
122 KBUILD_CFLAGS += -Wno-format
123 # Then re-enable flags that were part of the -Wformat group that aren't
125 KBUILD_CFLAGS += -Wformat-extra-args -Wformat-invalid-specifier
126 KBUILD_CFLAGS += -Wformat-zero-length -Wnonnull
127 # Requires clang-12+.
128 ifeq ($(call clang-min-version, 120000),y)
129 KBUILD_CFLAGS += -Wformat-insufficient-args
132 KBUILD_CFLAGS += $(call cc-disable-warning, pointer-to-enum-cast)
133 KBUILD_CFLAGS += -Wno-tautological-constant-out-of-range-compare
134 KBUILD_CFLAGS += $(call cc-disable-warning, unaligned-access)
135 KBUILD_CFLAGS += -Wno-enum-compare-conditional
141 # W=2 - warnings which occur quite often but may still be relevant
145 KBUILD_CFLAGS += -Wdisabled-optimization
146 KBUILD_CFLAGS += -Wshadow
147 KBUILD_CFLAGS += $(call cc-option, -Wlogical-op)
148 KBUILD_CFLAGS += $(call cc-option, -Wunused-macros)
150 KBUILD_CPPFLAGS += -DKBUILD_EXTRA_WARN2
154 # The following turn off the warnings enabled by -Wextra
155 KBUILD_CFLAGS += -Wno-missing-field-initializers
156 KBUILD_CFLAGS += -Wno-type-limits
157 KBUILD_CFLAGS += -Wno-shift-negative-value
160 KBUILD_CFLAGS += -Wno-enum-enum-conversion
164 KBUILD_CFLAGS += -Wno-maybe-uninitialized
170 # W=3 - more obscure warnings, can most likely be ignored
174 KBUILD_CFLAGS += -Wbad-function-cast
175 KBUILD_CFLAGS += -Wcast-align
176 KBUILD_CFLAGS += -Wcast-qual
177 KBUILD_CFLAGS += -Wconversion
178 KBUILD_CFLAGS += -Wpacked
179 KBUILD_CFLAGS += -Wpadded
180 KBUILD_CFLAGS += -Wpointer-arith
181 KBUILD_CFLAGS += -Wredundant-decls
182 KBUILD_CFLAGS += -Wsign-compare
183 KBUILD_CFLAGS += -Wswitch-default
185 KBUILD_CPPFLAGS += -DKBUILD_EXTRA_WARN3
189 # The following turn off the warnings enabled by -Wextra
190 KBUILD_CFLAGS += -Wno-sign-compare
191 KBUILD_CFLAGS += -Wno-unused-parameter
196 # W=e - error out on warnings
200 KBUILD_CFLAGS += -Werror