Is there any way to see the raw output of Doxygen's preprocessor?

[Nick Pelling]

Hi everyone,

I've hit a problem where Doxygen's preprocessor seems to be emitting a couple of strings incorrectly in some complicated macros. However, without seeing what the preprocessor is actually outputting, I'm unable to make any progress debugging this issue. :-(

Is there any way to run Doxygen's preprocessor in a standalone way; or to somehow keep a copy of the preprocessor's "character buffer" output file (as mentioned in various Doxygen internals pages online)?

Thanks, Nick

[Ivan Andrus]

You can run doxygen as doxygen -d Preprocessor as mentioned https://www.stack.nl/~dimitri/doxygen/manual/preprocessing.html. But it will spit out a ton of information, so I highly recommend limiting the FILE_PATTERNS first.