Re: bug with multiple targets in pattern rules?

[Paul D. Smith]

%% 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.

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