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Re: (Gnu Make) How to specify *.o depends on common.h?

From: Paul D. Smith
Subject: Re: (Gnu Make) How to specify *.o depends on common.h?
Date: 19 Jul 2005 13:37:46 -0400
User-agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.4

%% Steven Woody <> writes:

  sw> "Paul D. Smith" <> writes:
  >> %% Steven Woody <> writes:

  sw> in gnu make, can i specify a dependency rule which conducts the
  sw> rebuilding of all .o files as long as a common .h file change?
  sw> thanks.

  >> foo.o bar.o baz.o boz.o biz.o : common.h

  sw> i think this is not so ideal.  actually, i've already defined 

  sw> PROGRAM = foo bar baz boz biz

  sw> somewhere, so i thing only suffixing an .o to all above programs
  sw> is not worthy of such re-typing. some kind of reusing of
  sw> $(PROGRAM) is desirable.

Well, if you want an answer to a specific question you have to ask THAT
question, not some other question... we're l33t, but we ain't psychic :-).

If you have a variable PROGRAM containing the names of things without
the .o and you want to avoid retyping, you can do this:

    $(PROGRAM:%=%.o): common.h

 Paul D. Smith <>          Find some GNU make tips at:            
 "Please remain calm...I may be mad, but I am a professional." --Mad Scientist

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