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This PR makes it so that, by default, the sphinx command called (via the Makefile) by
build_docs
treats warnings as errors. The build will still complete, but the exit code will be 1 instead of 0, and the "The HTML pages are in" message won't appear.Users can disable this behavior with the new
-w
/--warnings-as-warnings
flag.Tested in the CTSM repo with deliberately-bad restructuredText (invalid references) with flags:
-d
,-d -w
,-w
, and neither. Additional independent testing would be smart, I think, as I was using a custom Docker container for the-d
tests.