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| author | Kees Cook <kees@kernel.org> | 2026-09-18 17:59:27 -0700 |
|---|---|---|
| committer | Nathan Chancellor <nathan@kernel.org> | 2026-09-24 11:37:05 -0400 |
| commit | cfcc465018818fb4f08148a28adb5b0cb40a9ec1 (patch) | |
| tree | 0a74916617a2364cc2ad8abde50f9a75e082b3ee /scripts/Kconfig.include | |
| parent | 889a621272f9b7e19f35efa3d836347b4e209290 (diff) | |
| download | linux-cfcc465018818fb4f08148a28adb5b0cb40a9ec1.tar.gz linux-cfcc465018818fb4f08148a28adb5b0cb40a9ec1.zip | |
kconfig: Add "ld-option-str"
Add the linker counterpart to $(cc-option-str), sharing a $(ld-probe)
with $(ld-option) the way the compiler macros share $(cc-probe). Like
$(cc-option-str), it can now be used as:
config LD_OPT_FOO
def_string "$(ld-option-str,--new-option,--old-option)"
An omitted fallback expands to the empty string.
Build tested ARCH=x86_64 defconfig with GCC 16.2.0, and checked against
GNU ld 2.47.
Assisted-by: LLM
Signed-off-by: Kees Cook <kees@kernel.org>
Tested-by: Julian Braha <julianbraha@gmail.com>
Reviewed-by: Julian Braha <julianbraha@gmail.com>
Link: https://patch.msgid.link/20260919005929.4077729-3-kees@kernel.org
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Diffstat (limited to 'scripts/Kconfig.include')
| -rw-r--r-- | scripts/Kconfig.include | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/scripts/Kconfig.include b/scripts/Kconfig.include index 4ef2b64e97be..622d21e6953f 100644 --- a/scripts/Kconfig.include +++ b/scripts/Kconfig.include @@ -37,9 +37,19 @@ cc-option = $(success,$(cc-probe,$(1))) # <fallback> defaults to an empty string and is returned untested. cc-option-str = $(if-success,$(cc-probe,$(1)),$(1),$(2)) +# $(ld-probe,<flag>) +# The command $(ld-option) and $(ld-option-str) test <flag> with. Not meant +# to be called directly; use one of those two instead. +ld-probe = $(LD) -v $(1) + # $(ld-option,<flag>) # Return y if the linker supports <flag>, n otherwise -ld-option = $(success,$(LD) -v $(1)) +ld-option = $(success,$(ld-probe,$(1))) + +# $(ld-option-str,<flag>[,<fallback>]) +# Return <flag> if the linker supports it, <fallback> otherwise. +# <fallback> defaults to an empty string and is returned untested. +ld-option-str = $(if-success,$(ld-probe,$(1)),$(1),$(2)) # $(as-instr,<instr>) # Return y if the assembler supports <instr>, n otherwise |