Re: qeustion about make

["Paul D. Smith" <psmith at gnu dot org>]

%% Mohammad Saleem <mosa@enea.se> writes:

  ms> I am using gnu make 3.79.1.
  ms> I have a question regarding make. My question is that I want to define a
  ms> symbol on command line. How to do with make?
  ms> For example if I want to define MYOBJECT symbol, how to write?
  ms> I even tried with
  ms> prompt> make -D MYOBJECT  test.c
  ms> didn't work.

This is not actually an automake question; you should better address it
to help-make@gnu.org.

The answer to your question is that the make variable CPPFLAGS is used
to hole C preprocessor flags.  So, if you want to change or the flags
that are passed to the preprocessor, you would override that make
variable on the command line, like this:

  $ make CPPFLAGS='-D MYOBJECT'

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