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Re: bug with multiple targets in pattern rules?
From: |
Paul D. Smith |
Subject: |
Re: bug with multiple targets in pattern rules? |
Date: |
Thu, 26 Jun 2003 16:21:38 -0400 |
%% 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.
Confusing, perhaps, but that's the way it is.
--
-------------------------------------------------------------------------------
Paul D. Smith <address@hidden> Find some GNU make tips at:
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"Please remain calm...I may be mad, but I am a professional." --Mad Scientist