On Thu, Apr 11, 2002 at 03:03:11PM -0400, Peter Eisentraut wrote:
 
> You could ask that question about AC_CHECK_FUNC, too.  The reasons are,
> the variable might not be declared anywhere or where you are looking for
> it (e.g., optind on hosts without unistd.h), or it might be declared and
> you don't have the right libraries.  To be sure, you must link.

your test does not distinguish between variables and functions which happen
to have global addresses which are linkable.

-- 
Thomas E. Dickey <[EMAIL PROTECTED]>
http://invisible-island.net
ftp://invisible-island.net

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