TCP support for MIT Kerberos in HP-UX IA64

[Simo Sorce]

On Sun, 2014-04-27 at 11:47 -0400, Greg Hudson wrote:
> On 04/26/2014 02:59 PM, Vipul Mehta wrote:
> > As everything is working fine with the change, can someone please commit this change to the repository for get_so_error() in sendto_kdc.c
> > 
> > #if defined(__hpux)
> >  int sockerrlen;
> > #else
> >  socklen_t sockerrlen;
> > #endof
> 
> I don't think we'd want to make that change exactly.  For one thing, it
> seems likely that there are HPUX compilation environments for which
> using socklen_t would work and using int would break.
> 
> Ideally, we want an autoconf test which determines whether the final
> argument of getsockopt should be int * or socklen_t * under the compiler
> and CFLAGS specified by the user.  From that test we would define a type
> in include/port-sockets.h, and use that type when calling getsockopt.
> 
> I'm not immediately sure how to write the autoconf test, though.  My
> hope is that passing socklen_t * as the final getsockopt argument
> generates a warning on HPUX (perhaps you can verify this), and we can
> use that to distinguish.  But AC_COMPILE_IFELSE doesn't appear to fail
> on warnings, so I'm not sure what the best autoconf idiom is to look for
> warnings.

Maybe add -Werror so warnings are fatal ?

> I did find
> http://lists.gnu.org/archive/html/autoconf/2007-05/msg00079.html
> which works by triyng to to redefine prototypes for accept and connect
> to determine whether a system is using socklen_t.  But it's pretty
> complicated and the author wasn't completely confident in its
> correctness at the time.
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-- 
Simo Sorce * Red Hat, Inc * New York