In particular,
I moved the hunk below forward to "Modify dev warning options to affect
deprecated warnings", the commit where it actually becomes needed
because the default changes.
I'm not sure I follow, which hunk are we talking about here?

Please add a Help/release/dev/cmake-W-options.rst file with release
notes for these changes.
Okay no problem.

This
means that adding "-Wno-dev" on a non-initial configuration will not
disable deprecation warnings because CMAKE_WARN_DEPRECATED is already
cached even though no explicit -W option was given before.
Ah that's a good point, I hadn't considered that set of steps, thanks.

As a user
I may expect those options to be loaded from the current cache in each
build tree I select.
Okay well I'll remove the related patch from the set for now and come back to it after we've got the main sorted out and applied.

Cheers,
Michael



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