[PATCH v2 1/3] kbuild: add CONFIG_LD_IS_LLD

Nathan Chancellor
2020-04-19T20:21:46Z

From: Sami Tolvanen <samitolvanen@google.com>

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>
[nc: Reword commit message]
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
---

v1 -> v2:

* No changes.

Sami, please scream if you are unhappy with how I worded this commit.

init/Kconfig | 3 +++
1 file changed, 3 insertions(+)

diff --git a/init/Kconfig b/init/Kconfig
index 9e22ee8fbd75..c15ee42b8272 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -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))

base-commit: 50cc09c18985eacbbd666acfd7be2391394733f5
--
2.26.1