Suppose I have a file A that is dependent on B and C. I have a tool, mytool,
that can create B and C at one time from their respective sources. When making
A, I would want make to do "mytool B C" as one of its steps.
A.y: B.z C.z
... steps for A ...
mytool B.z C.z
... steps for A...
%.z:
mytool ...
mytool has a big startup time, so the time to do two runs, one for B and one
for C, is *much* longer than doing them both at once (which is why the tool was
created to create multiple outputs in one run).
If I try to use the pattern for %.y, then I get multiple runs for mytool. If I
hardcode the target A, then I can get it to work since I have control over
everything.
How can I do this?
Thanks in advance,
James
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