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[89.204.155.209]) by smtp.gmail.com with ESMTPSA id k184sm15681118wmf.9.2020.04.19.06.19.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 19 Apr 2020 06:19:55 -0700 (PDT) From: Sedat Dilek To: Masahiro Yamada , Masami Hiramatsu , "Steven Rostedt (VMware)" , "Peter Zijlstra (Intel)" , Tejun Heo , Mauro Carvalho Chehab , "Joel Fernandes (Google)" , Patrick Bellasi , Krzysztof Kozlowski , Dan Williams , "Eric W. Biederman" , linux-kernel@vger.kernel.org, clang-built-linux@googlegroups.com Cc: Sedat Dilek Subject: [RFC PATCH 1/2] kbuild: add CONFIG_LD_IS_BINUTILS Date: Sun, 19 Apr 2020 15:19:47 +0200 Message-Id: <20200419131947.173685-1-sedat.dilek@gmail.com> X-Mailer: git-send-email 2.26.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch is currently not mandatory but a prerequisites for the second one. Folks from ClangBuiltLinux project like the combination of Clang compiler and LLD linker from LLVM project to build their Linux kernels. Sami Tolvanen has a patch for using LD_IS_LLD (see [1]). Documentation/process/changes.rst says and uses "binutils" that's why I called it LD_IS_BINUTILS (see [2] and [3]). The second patch will rename existing LD_VERSION to BINUTILS_VERSION to have a consistent naming convention like: 1. CC_IS_GCC and GCC_VERSION 2. CC_IS_CLANG and CLANG_VERSION 3. LD_IS_BINUTILS and BINUTILS_VERSION [1] https://github.com/samitolvanen/linux/commit/61889e01f0ed4f07a9d631f163bba6c6637bfa46 [2] https://git.kernel.org/linus/tree/Documentation/process/changes.rst#n34 [3] https://git.kernel.org/linus/tree/Documentation/process/changes.rst#n76 Signed-off-by: Sedat Dilek --- init/Kconfig | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/init/Kconfig b/init/Kconfig index 9e22ee8fbd75..520116efea0f 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -16,9 +16,12 @@ config GCC_VERSION default $(shell,$(srctree)/scripts/gcc-version.sh $(CC)) if CC_IS_GCC default 0 +config LD_IS_BINUTILS + def_bool $(success,$(LD) -v | head -n 1 | grep -q 'GNU ld') + config LD_VERSION int - default $(shell,$(LD) --version | $(srctree)/scripts/ld-version.sh) + default $(shell,$(LD) --version | $(srctree)/scripts/ld-version.sh) if LD_IS_BINUTILS config CC_IS_CLANG def_bool $(success,$(CC) --version | head -n 1 | grep -q clang) -- 2.26.1