On 06/05/2014 11:07 AM, Eli Zaretskii wrote:
> Some Autoconf expert should comment on that;
> if they approve, we should do that, because config.guess is reliable.

We can invoke AC_CANONICAL_HOST early in configure.ac, right after 
AC_INIT_AUTOMAKE.  The attached patch, for example, should work fine on 
non-Microsoft platforms (I haven't tested it on MingW though).