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scripts/Kconfig.toolchain: Drop compiler symbols from dependencies

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Commit 454e00cf8e ("kbuild: avoid re-running compiler and linker
probes") moved many cc-option calls from the main Makefile into Kconfig.
In the process, code such as

  ifdef CONFIG_CC_IS_GCC
  KBUILD_CFLAGS += $(call cc-option,-foo)
  endif

was converted into Kconfig as

  config CC_OPT_FOO
      def_string "$(cc-option-str,-foo)" if CC_IS_GCC

The 'if CC_IS_GCC' is generally unnecessary because it does not prevent
the cc-option-str call from running (which is the primary reason the
ifdef guards exists in the Makefile), as cc-option-str and the like are
run before Kconfig even parses the dependency. It only impacts the
symbol's visibility, which does not really matter in the general case,
so remove these dependencies.

Reviewed-by: Nicolas Schier <nsc@kernel.org>
Reviewed-by: Kees Cook <kees@kernel.org>
Link: https://patch.msgid.link/20261007-scripts-kconfig-toolchain-improvements-v1-1-1e524178da11@kernel.org
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
This commit is contained in:
Nathan Chancellor 2026-10-07 17:22:21 +02:00
parent a98db74187
commit c4c24fd63a
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GPG Key ID: 1D6B269171C01A96
1 changed files with 5 additions and 5 deletions
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10
scripts/Kconfig.toolchain
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@ -161,10 +161,10 @@ config CC_OPT_STRICT_FLEX_ARRAYS
# gcc-10 renamed --param=allow-store-data-races=0 to -fno-allow-store-data-races
config CC_OPT_ALLOW_STORE_DATA_RACES_PARAM
def_string "$(cc-option-str,--param=allow-store-data-races=0)" if CC_IS_GCC
def_string "$(cc-option-str,--param=allow-store-data-races=0)"
config CC_OPT_NO_ALLOW_STORE_DATA_RACES
def_string "$(cc-option-str,-fno-allow-store-data-races)" if CC_IS_GCC
def_string "$(cc-option-str,-fno-allow-store-data-races)"
config CC_HAS_MNOP_MCOUNT
def_bool $(cc-option,-mnop-mcount)
@ -183,13 +183,13 @@ config CC_OPT_WNO_ADDRESS_OF_PACKED_MEMBER
def_string "-Wno-address-of-packed-member" if $(cc-option,-Waddress-of-packed-member)
config CC_OPT_WNO_FORMAT_OVERFLOW_NON_KPRINTF
def_string "-Wno-format-overflow-non-kprintf" if CC_IS_CLANG && $(cc-option,-Wformat-overflow-non-kprintf)
def_string "-Wno-format-overflow-non-kprintf" if $(cc-option,-Wformat-overflow-non-kprintf)
config CC_OPT_WNO_FORMAT_TRUNCATION_NON_KPRINTF
def_string "-Wno-format-truncation-non-kprintf" if CC_IS_CLANG && $(cc-option,-Wformat-truncation-non-kprintf)
def_string "-Wno-format-truncation-non-kprintf" if $(cc-option,-Wformat-truncation-non-kprintf)
config CC_OPT_WNO_DEFAULT_CONST_INIT_UNSAFE
def_string "-Wno-default-const-init-unsafe" if CC_IS_CLANG && $(cc-option,-Wdefault-const-init-unsafe)
def_string "-Wno-default-const-init-unsafe" if $(cc-option,-Wdefault-const-init-unsafe)
config CC_OPT_WNO_DANGLING_POINTER
def_string "-Wno-dangling-pointer" if $(cc-option,-Wdangling-pointer)