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make - two wildcards in the target

 
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# 1  
Old 01-30-2011
Question make - two wildcards in the target
Suppose I have a Makefile like this:

Code:
x/Ax: x/Bx
touch x/Ax

y/Ay: y/By
touch y/Ay

z/Az: z/Bz
touch z/Az

It does not look like a proper style for make. I would like to write something like
Code:
%/A%: %/B%
touch %/A%

but make does not accept it.
What is a right way to shorten such a sequence of rules?
# 2  
Old 01-30-2011
Rather, I'd make one general rule which doesn't match all the files but DOES accept the input and output type you want. Then one great big rule that matches all inputs and produces all outputs, which make should deduce needs to call the general rule lots of times.
 
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