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Makefile function example

 1 year ago
source link: https://gist.github.com/weshouman/f44f330227972073371e1baa510c0d37
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Usage:

This is an example for a function myfn that:

  • Takes a local input file name FILE
  • Returns an abs_filename, created by using the global variable PATH

Notes:

  • We couldn't replace myfn with another make target as it wouldn't give us a clear return value
  • We had to use ($value ...) to avoid the unwanted expansion described in Eval Function and Value Function
  • When we miss the value function, we get "Missing Separator Stop error"
  • Commenting an ($eval ($call ... ) expression is not possible (even the syntax highlighting showed so -_-).
  • Use this way only if the function expression is complicated and needs multiple lines, otherwise, one could use filters and similar stuff

References:


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