gh-128042: configure warns when CFLAGS=-O0 and --enable-optimizations

[taegyunkim]

• Issue: PGO/LTO Build Fails With -O0 #128042

[bedevere-app]

Most changes to Python require a NEWS entry. Add one using the blurb_it web app or the blurb command-line tool.

If this change has little impact on Python users, wait for a maintainer to apply the skip news label instead.

[bedevere-app]

A Python core developer has requested some changes be made to your pull request before we can consider merging it. If you could please address their requests along with any other requests in other reviews from core developers that would be appreciated.

Once you have made the requested changes, please leave a comment on this pull request containing the phrase I have made the requested changes; please review again. I will then notify any core developers who have left a review that you're ready for them to take another look at this pull request.

[bedevere-app]

Most changes to Python require a NEWS entry. Add one using the blurb_it web app or the blurb command-line tool.

If this change has little impact on Python users, wait for a maintainer to apply the skip news label instead.

[taegyunkim]

I have made the requested changes; please review again

[bedevere-app]

Thanks for making the requested changes!

@AA-Turner: please review the changes made to this pull request.

[python-cla-bot]

All commit authors signed the Contributor License Agreement.

[bedevere-app]

Most changes to Python require a NEWS entry. Add one using the blurb_it web app or the blurb command-line tool.

If this change has little impact on Python users, wait for a maintainer to apply the skip news label instead.

[taegyunkim]

@AA-Turner Could you please take a look again?

[bedevere-app]

Most changes to Python require a NEWS entry. Add one using the blurb_it web app or the blurb command-line tool.

If this change has little impact on Python users, wait for a maintainer to apply the skip news label instead.

[bedevere-app]

Most changes to Python require a NEWS entry. Add one using the blurb_it web app or the blurb command-line tool.

If this change has little impact on Python users, wait for a maintainer to apply the skip news label instead.

[hauntsaninja]

Since this is a change visible to users, could you add a news entry? The app https://blurb-it.herokuapp.com/ is useful for this

[taegyunkim]

@hauntsaninja Done!
Could you remove skip news flag then?

[hauntsaninja]

Thanks, done! Hm I think Adam's line break suggestion causes this to get printed out with the whitespace mid sentence

[taegyunkim]

Updated to use m4_normalize and it looks as the following now

[AA-Turner]

Thanks, done! Hm I think Adam's line break suggestion causes this to get printed out with the whitespace mid sentence

Oh, the joys of autoconf... Thanks for noticing!

A

[hauntsaninja]

Great, thank you!! :-)