RFR: 8203290: [PPC64, s390] Check functionality of JDK-8199712 (Flight Recorder) [v5]

[Erik Joelsson]

On Mon, 3 Jan 2022 13:57:59 GMT, Erik Joelsson <erikj at openjdk.org> wrote:

>> Tyler Steele has refreshed the contents of this pull request, and previous commits have been removed. Incremental views are not available.
>
> Build changes look ok. You will also need ok from someone in the component team.

> @erikj79 Regarding the TOC warning I mentioned above:
> 
> * I now believe the TOC warning has been present while building the master branch (so this PR probably isn't the root cause).
> * I've also noticed that the addition of `-qpic=large` in [flags-cflags.m4](https://github.com/backwaterred/jdk/blob/79bfca43a729675da9c95a59fead373f76e9feac/make/autoconf/flags-cflags.m4#L429) hasn't removed the build warning about a TOC overflow.
> 
> For the above reasons, I've removed `-qpic=large` from the line linked above.

I can't really comment on any AIX specific compiler flags as I'm not familiar with AIX and not representing a company that supports it. All I can say is that the build changes look sane from a structural point of view. I don't know if anyone here is able to judge the choice of AIX specific flags better than yourself.

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PR: https://git.openjdk.java.net/jdk/pull/6885