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SubjectRe: [PATCH v2] kbuild: check the minimum compiler version in Kconfig
On Thu, Jan 14, 2021 at 4:55 PM Ilie Halip <ilie.halip@gmail.com> wrote:
>
> 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.

Thanks.

The following is the result from godbolt
(except the beta releases of 21.1.*)


version __INTEL_COMPILER __INTEL_COMPILER_UPDATE
13.0.1 1300 (unsupported)
16.0.3 1600 3
17.0.0 1700 0
18.0.0 1800 0
19.0.0 1900 0
19.0.1 1900 0



Presumably, the version string xx.yy.zz corresponds to
__INTEL_COMPILER=xxyy
__INTEL_COMPILER_UPDATE=zz

The output from 19.0.1 does not make sense, though.



BTW, when I tried ICC a few years ago,
I could not build the kernel with it.


--
Best Regards
Masahiro Yamada

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