Re: exit codes from gnu make

[Paul D. Smith]

%% "Mark Brandyberry" <address@hidden> writes:

  mb> The gnu make documentation specifies that only return codes of
  mb> 0,1, and 2 will occur.  I am currently getting "512" as a return
  mb> code for a build I'm doing.  Does that make sense, and/or what
  mb> would it mean?

It sounds like you're getting the exit code in a program, say from a
waitpid() or similar, and you're not massaging it properly (see the
WIFEXITSTATUS() macro, for example, typically found in the waitpid() man
page).

In the return code from waitpid(), etc., only the least 8 bits of the
code are the exit code of the process; the rest of the value tells you
other things.  So if you want the 0, 1, or 2 you have to take only the
least 8 bits.

-- 
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