RFR: JDK-8269031: linux x86_64 check for binutils 2.25 or higher after 8265783 [v2]

[Erik Joelsson]

On Tue, 22 Jun 2021 11:18:47 GMT, Matthias Baesken <mbaesken at openjdk.org> wrote:

>> This change adds a check for binutils 2.25 or higher after 8265783. The change 8265783 introduced on linux x86_64 a minimum requirement for binutils : "Minimum required would be binutils 2.25 where AVX512 support was added for Skylake."  (see https://bugs.openjdk.java.net/browse/JDK-8265783 )
>> I adjusted the existing check that already checked the binutils version by looking at the linker output (we do not look at the assembler version and it seems to me we do not really invoke the assembler directly, just indirectly via gcc).
>
> Matthias Baesken has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Add comment about as version

Marked as reviewed by erikj (Reviewer).

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PR: https://git.openjdk.java.net/jdk/pull/4548