automate checking @internal API tags vs. ifdef guards

Description

Follow-up to ICU-20814: I punted on @internal tags because when some of them (especially low-level config macros in umachine.h and such) are hidden, other definitions in ICU headers don't even pre-process properly any more. If we want to automate checking most of the @internal tags, we may need to somehow annotate the ones that we cannot hide, and have the script ignore them.

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Assignee

Markus Scherer

Reporter

Markus Scherer

Components

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Priority

major

Time Needed

Hours

Fix versions