Re: Problem with relative path in rule

[Paul D. Smith]

%% Torleif Sandnes <address@hidden> writes:

  ts> I have a problem with using relative pathnames in make rules.

  ts> This is the rule:
  ts> util.o: ../../utilities/util.c

  ts> This is the output from make

  ts> c:\programs\WinAVR\utils\bin\make.exe: *** No rule to make target 
  ts> `../utilities/util.c', needed by `util.o'.  Stop.

  ts> It seems make removes ../ from my prerequisite.

  ts> Is this a known problem, or am I doing something wrong?

You didn't provide a complete example, so I can't tell for sure.  Also,
please remember to specify which version of GNU make you're using.

However, the debug output you provided gives a clue.

The rule you give above isn't a complete rule: it's just a prerequisite
declaration.  Make still needs to find an actual rule.  After make finds
the ../../utilities/util.c file, it looks for ../utilities/util.c.  So,
there is another prerequisite declaration in your makefile somewhere
that has util.o depending on ../utilities/util.c, or maybe a complete
rule.  It might be a pattern rule but I don't think so given the debug
output.

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