linux-kernel - [PATCH 0/3] Add version macros for clang and fix arm64 for clang <6.0

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Message-Id: <20171129000011.55235-1-samitolvanen@google.com>
Date:   Tue, 28 Nov 2017 16:00:08 -0800
From:   Sami Tolvanen <samitolvanen@...gle.com>
To:     Alex Matveev <alxmtvv@...il.com>, Andi Kleen <ak@...ux.intel.com>,
        Ard Biesheuvel <ard.biesheuvel@...aro.org>,
        Greg Hackmann <ghackmann@...gle.com>,
        Kees Cook <keescook@...omium.org>,
        linux-arm-kernel@...ts.infradead.org, linux-kbuild@...r.kernel.org,
        linux-kernel@...r.kernel.org, Mark Rutland <mark.rutland@....com>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Maxim Kuvyrkov <maxim.kuvyrkov@...aro.org>,
        Michal Marek <michal.lkml@...kovi.net>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Yury Norov <ynorov@...iumnetworks.com>,
        Matthias Kaehlcke <mka@...omium.org>
Cc:     Sami Tolvanen <samitolvanen@...gle.com>
Subject: [PATCH 0/3] Add version macros for clang and fix arm64 for clang <6.0

In order to build an arm64 kernel with clang <6.0, we need to work
around LLVM bug 30792 by using -mno-implicit-float instead of
-mgeneral-regs-only.

This patch set adds macros for checking clang version, and enable the
workaround only for affected compiler versions.

Greg Hackmann (1):
  arm64: use -mno-implicit-float instead of -mgeneral-regs-only

Sami Tolvanen (2):
  kbuild: add clang-version.sh
  kbuild: add cc-if-name-version and compiler-specific variants

 arch/arm64/Makefile      |  5 ++++-
 scripts/Kbuild.include   | 31 +++++++++++++++++++++++++++++++
 scripts/clang-version.sh | 33 +++++++++++++++++++++++++++++++++
 3 files changed, 68 insertions(+), 1 deletion(-)
 create mode 100755 scripts/clang-version.sh

-- 
2.15.0.417.g466bffb3ac-goog