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From:   Nathan Chancellor <natechancellor@gmail.com>
To:     Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
        Masahiro Yamada <masahiroy@kernel.org>
Cc:     linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org,
        clang-built-linux@googlegroups.com, linux-kbuild@vger.kernel.org,
        Nick Desaulniers <ndesaulniers@google.com>,
        Fangrui Song <maskray@google.com>,
        Sami Tolvanen <samitolvanen@google.com>,
        Dmitry Golovin <dima@golovin.in>,
        Sedat Dilek <sedat.dilek@gmail.com>,
        Nathan Chancellor <natechancellor@gmail.com>
Subject: [PATCH v4 1/5] kbuild: add CONFIG_LD_IS_LLD
Date:   Tue, 28 Apr 2020 15:14:15 -0700
Message-Id: <20200428221419.2530697-2-natechancellor@gmail.com>
In-Reply-To: <20200428221419.2530697-1-natechancellor@gmail.com>
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 <20200428221419.2530697-1-natechancellor@gmail.com>
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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>
Acked-by: Masahiro Yamada <masahiroy@kernel.org>
[nc: Reword commit message]
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
---

v3 -> v4:

* No changes.

v2 -> v3:

* Add Masahiro's ack.

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 9e22ee8fbd75e..c15ee42b82726 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: 96c9a7802af7d500a582d89a8b864584fe878c1b
-- 
2.26.2