Re: _AC_PROG_CXX_EXIT_DECLARATION: don't `#include <stdlib.h>'

[Paul Eggert]

David Thompson <address@hidden> writes:

> I am having a recent problem with autoconf due to the following patch
> <http://lists.gnu.org/archive/html/autoconf-patches/2003-05/msg00072.html>. 
> The
> problem is that I'm using Microsoft's Visual C++. It has a problem
> that it still doesn't find a valid match for 'exit' in the list given
> with . When stdlib.h was included, it did find the valid one. Its due
> to Microsoft's linkage issues.

I.e. the Microsoft compilers don't conform to the C standard, which
requires that you must be able to use standard functions by declaring
them (you needn't include the corresponding headers).

> Is there a solution other than to keep including stdlib.h?

Not that I can think of.

> Is there a way to make stdlib.h get included for tests that have the
> exit function added?

Automatically?  I'd rather not go down that path.  config.h should not
include any other file.

For particular tests, you can modify them to include stdlib.h.