RFR: 8366777: Build fails unknown pseudo-op with old AS on linux-aarch64 [v12]

[SendaoYan]

On Thu, 11 Sep 2025 13:09:32 GMT, Erik Joelsson <erikj at openjdk.org> wrote:

> I would suggest creating a separate `FLAGS_SETUP_SVE`, called from `FLAGS_SETUP_FLAGS` and put the whole thing in there.

Thanks, I have created a separate macro `FLAGS_SETUP_SVE` located in make/autoconf/flags-other.m4. I am not quite sure which file should be belonged.

> make/autoconf/flags.m4 line 377:
> 
>> 375:       # libvectormath. Apple Silicon does not support SVE; use macOS as a proxy for
>> 376:       # that check.
>> 377:       if test "x$FLAGS_CPU" = "xaarch64" && test "x$FLAGS_OS" = "xlinux"; then
> 
> If moving this outside of `FLAGS_SETUP_CFLAGS_CPU_DEP`, then these variables don't exist anymore.

Thanks, fixed.

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PR Comment: https://git.openjdk.org/jdk/pull/27073#issuecomment-3280953137
PR Review Comment: https://git.openjdk.org/jdk/pull/27073#discussion_r2341043906