RFR: 8366777: Build fails unknown pseudo-op with old AS on linux-aarch64

[SendaoYan]

On Wed, 3 Sep 2025 16:42:40 GMT, Erik Joelsson <erikj at openjdk.org> wrote:

> A common pattern for optionally supported features is to add an explicit --enable/--disable flag that takes 3 values: yes, no and auto, where the default is auto.

Thanks for the advices. I think this will be a good choice. I will try this later.

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PR Comment: https://git.openjdk.org/jdk/pull/27073#issuecomment-3252185602