linux-kernel - Re: [PATCH v2] kbuild: check the minimum compiler version in Kconfig

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Date:   Thu, 14 Jan 2021 09:54:51 +0200
From:   Ilie Halip <ilie.halip@...il.com>
To:     Masahiro Yamada <masahiroy@...nel.org>
Cc:     linux-kbuild@...r.kernel.org,
        Paul Gortmaker <paul.gortmaker@...driver.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Nathan Chancellor <natechancellor@...il.com>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Will Deacon <will@...nel.org>,
        clang-built-linux <clang-built-linux@...glegroups.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] kbuild: check the minimum compiler version in Kconfig

Hi Masahiro,

> +       #elif defined(__INTEL_COMPILER)
> +       /* How to get the version of intel compiler? */
> +       ICC     0               0               0

According to Intel documentation[1], this should do the trick:

    ICC     __INTEL_COMPILER  __INTEL_COMPILER_UPDATE
__INTEL_COMPILER_BUILD_DATE

I don't have the compiler installed, but I tested this on godbolt[2] and
looks fine to me. What do you think?

[1] https://software.intel.com/content/www/us/en/develop/documentation/cpp-compiler-developer-guide-and-reference/top/compiler-reference/macros/additional-predefined-macros.html
[2] https://godbolt.org/z/E5PE6f

I.H.