FreeTDS Development Group

[Sam Denton <denton AT wantec.com>]

Re: INADDR_NONE, here are a couple of threads that may be useful.  The first
is a bit quick-and-dirty, the second one is fancier, but seems to cover more
architectures.  (Note: I am not an autoconf guru, so don't ask me for help
with actually implementing any of these.)
http://sources.redhat.com/ml/autoconf/1999-03/msg00081.html

    * To: autoconf AT gnu.org
    * Subject: INADDR_NONE
    * From: lars brinkhoff <lars AT nocrew.org>
    * Date: 29 Mar 1999 16:58:41 +0200

Some systems don't define INADDR_NONE.  This macro might be helpful.
There might be a better name for it.

AC_DEFUN(AC_HAVE_INADDR_NONE,
[AC_CACHE_CHECK([whether INADDR_NONE is defined], ac_cv_have_inaddr_none,
 [AC_TRY_COMPILE(
  [#include <sys/types.h>
#include <netinet/in.h>],
  [return INADDR_NONE;],
  ac_cv_have_inaddr_none=yes,
  ac_cv_have_inaddr_none=no)])
 if test $ac_cv_have_inaddr_none != yes; then
   AC_DEFINE(INADDR_NONE, 0xffffffff)
 fi])

http://www.apachelabs.org/apache-mbox/199912.mbox/%3C19991225194053.A28315@s
chumann.cx%3E
From: Sascha Schumann <sascha AT schumann.cx>
Subject: [PATCH] improved INADDR_NONE check
Date: Sat, 25 Dec 1999 18:40:53 GMT

--J/dobhs11T7y2rNN
Content-Type: text/plain; charset=us-ascii

    Hi,

    this patch fixes some portability issues in the INADDR_NONE
    m4 macro. In particular, some platforms need to include
    <sys/types.h>.

--

          Regards,

                            Sascha Schumann
                                 Consultant

--J/dobhs11T7y2rNN
Content-Type: text/plain; charset=us-ascii
Content-Disposition: attachment; filename=inaddr-none-patch

Index: acinclude.m4
===================================================================
RCS file: /cvs/apache/apache-2.0/src/acinclude.m4,v
retrieving revision 1.12
diff -u -r1.12 acinclude.m4
--- acinclude.m4        1999/12/24 21:22:27     1.12
+++ acinclude.m4        1999/12/25 18:36:09
@@ -147,9 +147,18 @@
 dnl
 AC_DEFUN(APACHE_INADDR_NONE,[
   AC_TRY_COMPILE([
+#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+#ifdef HAVE_SYS_SOCKET_H
 #include <sys/socket.h>
+#endif
+#ifdef HAVE_NETINET_IN_H
 #include <netinet/in.h>
+#endif
+#ifdef HAVE_ARPA_INET_H
 #include <arpa/inet.h>
+#endif
 ],[
 unsigned long foo = INADDR_NONE;
 ],[

--J/dobhs11T7y2rNN--



Sam Denton, WAN Technologies, INC.
(314) 428-0888 / (800) 926-7771 Main Office


-----Original Message-----
From: Steve Langasek [mailto:vorlon AT netexpress.net] 
Sent: Thursday, April 04, 2002 1:59 PM
To: TDS Development Group
Subject: [freetds] Re: Problem compiling current snapshot


Hello,

On Thu, Apr 04, 2002 at 12:54:33PM -0700, Steven J. Backus wrote:
>   I'm having a problem with dblib, thought I'd try the current
> snapshot to see if it was fixed.  I get:

> config.c: In function `lookup_host':
> config.c:523: `INADDR_NONE' undeclared (first use in this function)
> config.c:523: (Each undeclared identifier is reported only once
> config.c:523: for each function it appears in.)

> I'm on Intel Solaris 2.8 using gcc 2.95.2.  I've looked everywhere
> for this variable and can't find it declared.  TIA for any help.

On Linux, INADDR_NONE is defined to ((in_addr_t) 0xffffffff); I believe 
this is also the correct value on other platforms.

If you can't find it anywhere in /usr/include (netinet/in.h is the right 
file here), then perhaps this should be conditionally defined in 
FreeTDS.

Steve Langasek
postmodern programmer