Re: ac_check_funcs(getloadavg) with gcc 3.3

[Thomas Dickey]

On Mon, 19 Jan 2004, Hanspeter Roth wrote:

>   On Jan 19 at 12:58, Thomas Dickey spoke:
>
> > On Mon, 19 Jan 2004, Hanspeter Roth wrote:
> >
> > >   On Jan 19 at 08:58, Bob Friesenhahn spoke:
> > >
> > > > The key is to not use C++ to execute these tests.  Use C while
> > > > checking for library functions.  Only set the language to C++ while
> > > > testing C++ related features.
> > >
> > > Does it make sense to run test in C while the function getloadavg() is
> > > used in a C++ Module?
> >
> > no.  He's telling you how to get some use out of the tool as it is
> > written.  (Another one for the unwritten autoconf-FAQ).  Some of the
> > autoconf tests for C functions may happen to work when run from C++.
>
> So should the invokation of getloadavg() be moved to a separate C
> module and then call the C function that calls getloadavg() from a
> C++ module?

That might be a better design - it would at least get rid of the problem
of C++ breaking the configure test.  Since it's not standard, there's
no guarantee that its prototype is the same across all implementations.

The various Linux and *BSD platforms tend to make random uncoordinated
changes to the legacy BSD functions, sprinking const's in their
prototypes.

-- 
Thomas E. Dickey
http://invisible-island.net
ftp://invisible-island.net