Re: AC_CHECK_DECL+autoheader ==> nothing in config.h.in?

[Sam Steingold]

> * In message <address@hidden>
> * On the subject of "Re: AC_CHECK_DECL+autoheader ==> nothing in config.h.in?"
> * Sent on Mon, 28 Jul 2003 08:07:57 -0400
> * Honorable Derek Robert Price <address@hidden> writes:
>
> Sam Steingold wrote:
> 
> >I put AC_CHECK_DECL(signgam) in configure.in to check for the lgamma()
> >sign indicator.
> >I expected autoheader to place "#undef HAVE_DECL_SIGNGAM" in
> >config.h.in, but it does not do that.
> >Do I _have_ to use the full version, like
> >AC_CHECK_DECL(signgam,
> > AC_DEFINE([HAVE_DECL_SIGNGAM],[1],[lgamma sign is in signgam]),
> > AC_DEFINE([HAVE_DECL_SIGNGAM],[0],[lgamma sign is not available]),
> > [#include <math.h>] )
> >?? [I guess I do - because of math.h, but, still, AC_CHECK_DECL was
> >supposed to put something in config.h.in, right?]
> 
> AC_CHECK_DECLS defines the config.h.in variable automatically.  If you
> want to use AC_CHECK_DECL, yes, you have to use a construct like you
> mentioned.

Thank you very much.
what about <math.h>?
how do I have <math.h> included during the check for signgam without
having to define [ACTION-IF-FOUND] and [ACTION-IF-NOT-FOUND] myself?

-- 
Sam Steingold (http://www.podval.org/~sds) running w2k
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