[autoconf] bugs 162,303,178: Fix 'present but can not be compiled' warnings

2007-05-09 Paul Jakma <paul.jakma@sun.com>

	* configure.ac: sys/conf.h depends on sys/param.h, at least on
	  FBSD 6.2.
	  (bug #363) Should check for in_pktinfo for IRDP

2006-05-27 Paul Jakma <paul.jakma@sun.com>

	* configure.ac: General cleanup of header and type checks, introducing
	  an internal define, QUAGGA_INCLUDES, to build up a list of
	  stuff to include so as to avoid 'present but cant be compiled'
	  warnings.
	  Misc additional checks of things missing according to autoscan.
	  Add LIBM, for bgpd's use of libm, so as to avoid burdening
	  LIBS, and all the binaries, with libm linkage.
	  Remove the bad practice of using m4 changequote(), just
	  quote the []'s in the case statements properly.
	  This should fix bugs 162, 303 and 178.
	* */*.{c,h}: Update all HAVE_* to the standard autoconf namespaced
	  HAVE_* defines. I.e. HAVE_SA_LEN -> HAVE_STRUCT_SOCKADDR_SA_LEN,
	* bgpd/Makefile.am: Add LIBM to bgpd's LDADD, for pow().
diff --git a/lib/zclient.c b/lib/zclient.c
index 09a7d25..10e6b5f 100644
--- a/lib/zclient.c
+++ b/lib/zclient.c
@@ -164,9 +164,9 @@
   memset (&serv, 0, sizeof (struct sockaddr_in));
   serv.sin_family = AF_INET;
   serv.sin_port = htons (ZEBRA_PORT);
-#ifdef HAVE_SIN_LEN
+#ifdef HAVE_STRUCT_SOCKADDR_IN_SIN_LEN
   serv.sin_len = sizeof (struct sockaddr_in);
-#endif /* HAVE_SIN_LEN */
+#endif /* HAVE_STRUCT_SOCKADDR_IN_SIN_LEN */
   serv.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
 
   /* Connect to zebra. */
@@ -197,11 +197,11 @@
   memset (&addr, 0, sizeof (struct sockaddr_un));
   addr.sun_family = AF_UNIX;
   strncpy (addr.sun_path, path, strlen (path));
-#ifdef HAVE_SUN_LEN
+#ifdef HAVE_STRUCT_SOCKADDR_UN_SUN_LEN
   len = addr.sun_len = SUN_LEN(&addr);
 #else
   len = sizeof (addr.sun_family) + strlen (addr.sun_path);
-#endif /* HAVE_SUN_LEN */
+#endif /* HAVE_STRUCT_SOCKADDR_UN_SUN_LEN */
 
   ret = connect (sock, (struct sockaddr *) &addr, len);
   if (ret < 0)
@@ -625,13 +625,13 @@
   ifp->mtu = stream_getl (s);
   ifp->mtu6 = stream_getl (s);
   ifp->bandwidth = stream_getl (s);
-#ifdef HAVE_SOCKADDR_DL
+#ifdef HAVE_STRUCT_SOCKADDR_DL
   stream_get (&ifp->sdl, s, sizeof (ifp->sdl));
 #else
   ifp->hw_addr_len = stream_getl (s);
   if (ifp->hw_addr_len)
     stream_get (ifp->hw_addr, s, ifp->hw_addr_len);
-#endif /* HAVE_SOCKADDR_DL */
+#endif /* HAVE_STRUCT_SOCKADDR_DL */
   
   return ifp;
 }