Re: conditional macro definitions

[Paul D. Smith]

%% bill <address@hidden> writes:

  b> The syntax
  b> foo:=CFLAGS=-DFOO
  b> for redefining CFLAGS for the target foo seems like a great thing, but 
  b> it's not valid in gnu-make.  I'm currently setting up my make files so 
  b> that I type "make DEBUG=1" and then defining CFLAGS conditionally based 
  b> on the definition of DEBUG.  I'd much rather type "make debug" and use 
  b> the syntax given above.  2 questions:

  b> 1)  Is it possible to do something like:
  b> if target==debug;    CFLAGS = -DDEBUG; end if
  b> rather than:
  b>  ifdef DEBUG; CFLAGS = -DDEBUG; end if

  b> 2) Why is the conditional macro definition syntax not incorporated into 
  b> gnu-make?  It seems like a good idea.

Look up target-specific variables in the GNU make manual.

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