RFR: 8368273: LIBPTHREAD dependency is not needed for some jdk libs

[Magnus Ihse Bursie]

On Mon, 22 Sep 2025 12:38:45 GMT, Matthias Baesken <mbaesken at openjdk.org> wrote:

> A couple of JDK native libs link to $(LIBPTHREAD) but the dependency is not needed.
> 
> libsctp has no `pthread*` calls so most likely we can omit $(LIBPTHREAD).
> libawt_xawt only uses `pthread_self()` ; so on Linux it links without adding $(LIBPTHREAD) because it then uses `pthread_self() `from glibc;  however it might still be better to link $(LIBPTHREAD) in this special case.

Looks good!

I agree that it is better to keep libpthread for libawt_xawt.

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Marked as reviewed by ihse (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/27426#pullrequestreview-3258186230