> See <bsd.sys.mk>, which defines .y.h in terms of .y.c (I added this).

I tried that, at it almost works.  Two minor problems:
- If you remove the .h file it cannot get rebuilt.
- The .y.c rule might leave the .c file newer than the .h file.

> ParallelMake on Solaris uses `+' for this sort of thing; perhaps something
> to add to ours:
> 
> x + y: d
> 	cmd

Or some sort on .ONCE somewhere...

	David

-- 
David Laight: david@l8s.co.uk