Re: AC_DEFINE

[Bob Lockie]

On 03/13/03 22:31 John Burger spoke thusly

> > From: Bob Lockie <address@hidden>
> >
> > I execute the following in configure.in:
> > AC_DEFINE( [ENABLE_XMMS], [1] )
> >
> > yet this #ifdef in the source code doesn't work:
> > #ifdef ENABLE_XMMS
>
>
> You don't say how you expect this to happen.  Your question gives the 
> impression that you think the AC_DEFINE in configure.ac and the #ifdef 
> in the source file are sufficient, but this is not the case.  (You 
> didn't say if you're using Automake - if so, then the two things you 
> mention may indeed be enough.  Someone who uses Automake will have to 
> comment.)
>
> I can think of a number of ways to make this happen, including but not 
> limited to:
>
>   Having configure generate the source file itself
>
>   Generating a header file that defines ENABLE_XMMS,
>   which the source file includes
>
>   Generating a Makefile (or makefile fragment) that directly or
>   indirectly compiles the source file with -DENABLE_XMMS in the
>   compiler flags, e.g., using @DEFS@
>
> Which, if any, of these routes are you taking?
>
> - John Burger
>   MITRE

The source code #includes "config.h" which autoconf updates the #defines 
in (I think).
Is there anyway that I can trace the include path?


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