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kbuild: add CONFIG_LD_IS_LLD 

Similarly to the CC_IS_CLANG config, add LD_IS_LLD to avoid GNU ld
specific logic such as ld-version or ld-ifversion and gain the
ability to select potential features that depend on the linker at
configuration time such as LTO.

Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Acked-by: Masahiro Yamada <masahiroy@kernel.org>
[nc: Reword commit message]
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
Reviewed-by: Sedat Dilek <sedat.dilek@gmail.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
This commit is contained in:
Sami Tolvanen 2020-04-28 15:14:15 -07:00 committed by Thomas Bogendoerfer
parent 1bec48982c
commit b744b43f79
1 changed files with 3 additions and 0 deletions
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3
init/Kconfig
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@ -23,6 +23,9 @@ config LD_VERSION
config CC_IS_CLANG
def_bool $(success,$(CC) --version | head -n 1 | grep -q clang)
config LD_IS_LLD
def_bool $(success,$(LD) -v | head -n 1 | grep -q LLD)
config CLANG_VERSION
int
default $(shell,$(srctree)/scripts/clang-version.sh $(CC))