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RE: bug with multiple targets in pattern rules?


From: Reich, Hannes
Subject: RE: bug with multiple targets in pattern rules?
Date: Fri, 27 Jun 2003 10:59:06 +0100

> Paul D. Smith [mailto:address@hidden said:
> %% Mike Gibson <address@hidden> writes:
> 
>   mg> The behavior you're getting is correct.  When you list two
>   mg> targets, it isn't just for convienience so you don't 
> have to type
>   mg> the rule twice.  If a rule creates both targets for some reason,
>   mg> you only want the rule to run once.  This is for rules 
> that create
>   mg> multiple files.
> 
> Note the above is only true for _pattern rules_.  Explicit rules work
> the opposite way: multiple targets means each target is built
> individually using the listed prerequisites and command script.
> 

Ah, that's what was confusing me. I'll use the method suggested by Mike,

and try to RTFM more diligently in future. Many thanks for your help.

/Hannes




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