Re: checking Mac OS X headers

[Vincent Torri]

On Fri, 12 Feb 2010, Braden McDaniel wrote:

> On Fri, 2010-02-12 at 11:04 +0100, Vincent Torri wrote:
> > Hey,
> >
> > I restart this thread.
> >
> > So, what I would like to do is checking Mac OS X headers in an m4 macro.
> > If the objective C compiler is installed, no problem. If it is not, i
> > would like that, in the m4 macro, the test not to be done.
>
> Why do you want the test to be conditional?
>
> My experience is that, in general, conditional tests add complexity with
> very little return.  Why not just let the test fail where the requisite
> bits are missing and decide if that actually matters later in the
> script?

i think that you didn't understood the problem or i didn't explain it 
very well.

I *have to* use AC_LANG_PUSH([ObjectiveC]), or else mac os x systems will 
not detect the headers.

But, now that the macro contains AC_LANG_PUSH([ObjectiveC]), if a user 
launch configure and if he does not have an Objective C compiler, 
configure *fails*. It exits, stops, does not finish.

Vincent Torri