RFR: 8265192: [macos_aarch64] configure script fails if GNU uname in PATH

[Erik Joelsson]

On Wed, 14 Apr 2021 09:02:49 GMT, Nick Gasson <ngasson at openjdk.org> wrote:

> With GNU coreutils from Homebrew in the PATH, configure fails on Apple
> silicon Macs with:
> 
> 
> checking build system type... Invalid configuration `arm64-apple-darwin20.2.0': machine `arm64-apple' not recognized
> configure: error: /opt/homebrew/bin/bash /Users/nicgas01/jdk/make/autoconf/build-aux/config.sub arm64-apple-darwin20.2.0 failed
> configure exiting with result code 1
> 
> 
> The system `uname -p` prints "arm" but GNU's version prints "arm64".
> This patch just extends config.guess to handle this case.

Marked as reviewed by erikj (Reviewer).

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PR: https://git.openjdk.java.net/jdk/pull/3487