M4 and dependencies

Lorenzo Di Gregorio <[email protected]>
Newsgroups gmane.comp.gnu.m4.general
Message-ID <[email protected]> 
Hello,

I believe there is no way to generate dependency information with M4 as we
do in CPP with -MD.  Right?

After some searching I've seen that there have been some wishes for this
feature in the past, but it has never been implemented.  I've browsed a bit
in the last version of the sources and I think it could be implemented
within m4_push_file() in input.c.  Do you see any problem with it?

Personally, for a quick and dirty solution I would just dump all 'title'
values in a file and post-process it.

Best Regards,
Lorenzo
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