Re: configure can not determin 'HAVE_LIMITS'

[Ralf Corsepius]

On Wed, 2005-10-26 at 21:52 +0800, Steven Woody wrote:
> Stepan Kasal <address@hidden> writes:
> 
> > Hello,
> >
> > On Tue, Oct 25, 2005 at 10:23:55PM +0800, Steven Woody wrote:
> >> #ifdef HAVE_LIMITS
> >
> > add line
> >
> > AC_CHECK_HEADERS([limits])
> >
> > to configure.ac (or configure.in).
> >
> > HTH,
> >     Stepan Kasal
> 
> thanks. but still got problem.  if i say, AC_CHECK_HEADERS([limits]) as you
> pointed, the the configure script will complain and the HAVE_LIMITS veriable
> would't be set because my system (Linux) only get limits.h instead of 
> 'limits'.
> 
> so to make 'configure' happy, i changed to AC_CHECK_HEADERS([limits.h]), this
> time, 'configure' feels happy and HAVE_LIMITS_H is set properly. but the
> third-party headers used in my project requires a HAVE_LIMITS that is still 
> not
> set.
> 
> my current solution is add the below line into 'config.h.in':
> 
> #define HAVE_LIMITS 1
> 
> but i think this is not a decent way. any thinking?

You seem to be confused and are outsmarting yourself ;)

limits.h is a POSIX header. On linux it is supplied by GCC.

So if you want to check for "limits", you should use
AC_CHECK_HEADERS([limits])

If this fails, something else is broken and you will have to
investigate. It could be a bug inside of "limits", it could be problem
elsewhere inside of your configure script, or could be a problem with
your include paths.

It's hard to guess what actually goes wrong without having seen your
code.

Ralf