RFR: 8323672: Suppress unwanted autoconf added flags in CC and CXX

[Erik Joelsson]

On Fri, 12 Jan 2024 16:05:47 GMT, Magnus Ihse Bursie <ihse at openjdk.org> wrote:

> I'm kind of on the fence for this one. On one hand filtering out stuff is really hacky, but so is setting internal undocumented variables. We have done some meddling with internal variable in a few places before, but I'd really like to keep that to a minumum. I'm not sure this is an improvement. I'd like to get input from other build folks on this.

I was holding off for Magnus' opinion here. Both solutions are bad, but we are also trying to work around a pretty bad behavior in autoconf that has met quite a bit of opposition from what I've read. I don't see a clear winner, so I'm leaning towards sticking with the solution that is already integrated for now. If we see more related problems crop up we can re-evaluate then.

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PR Comment: https://git.openjdk.org/jdk/pull/17401#issuecomment-1889706568