Re: M4 version macro

[Gary V. Vaughan]

Hallo Hans,

Hans Aberg wrote:
> Does M4 have a macro, expanding to its version number (I suspect not)? 
> This might be useful when using M4 to generate parser/lexer files in 
> Bison/Flex, and stamp them with the M4 version used, so it becomes 
> clearly visible in debug reports.

CVS M4 (soon to be m4-2.0) has __m4_version__.

Release versions of GNU m4 could use syscmd(`m4 --version') if PATH is
set reasonably...

Cheers,
        Gary.
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