Hi Ed,
* Ed Hartnett wrote on Mon, Feb 06, 2006 at 04:42:01PM CET:
>
> I have a configure script which needs to know whether it is dealing
> with the f95 distributed with gcc-4.x, or the g95, which is apparently
> an independent project, which handles slightly differently.
What are the differences that are important to you? Can they be
recognized by a suitable test to be done in `configure'? Without
running generated executables? What if one of the compiler changes
in one of the interesting features (fixes some bug, or so)?
> In both cases ac_cv_fc_compiler_gnu is set to yes.
>
> At the moment I am distinguishing them base on name ("f95" vs. "g95")
> but this can easily break.
AFAIK the gcc-4.x Fortran compiler is named gfortran.
> Does anyone know of a better way?
Depending on above questions, yes: test for features, not names.
Testing for names and versions is very maintenance-intensive, see
Libtool; names and versions are a last resort when one
- cannot test the feature, or
- there are so many different details or possible results that it
would take far too long to test.
Cheers,
Ralf
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