RFR: 8304434: [AIX] Update minimum xlclang version [v2]

[Erik Joelsson]

On Fri, 21 Apr 2023 11:54:04 GMT, Matthias Baesken <mbaesken at openjdk.org> wrote:

> seems I have to adjust the separated test script to
> 
> ```
> #!/bin/sh
> 
> COMPILER_VERSION_OUTPUT=`xlclang -qversion 2>&1`
> 
> COMPILER_VERSION_NUMBER=`echo $COMPILER_VERSION_OUTPUT | sed -e 's/^.*Version: ([1-9][0-9.]*).*$/\1/'`
> 
> echo $COMPILER_VERSION_OUTPUT
> echo $COMPILER_VERSION_NUMBER
> ```
> 
> then it works nicely. The bash version check above from our configure however really fails but this is a separated issue.
> 
> So I think it is fine, reviewed !

Yes, the `@<:@` constructs are one way to get `[` into a string in m4. Not very readable. Another solution is to encase the whole expression in `[...]`.

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PR Comment: https://git.openjdk.org/jdk/pull/13086#issuecomment-1517779243