[bug-inetutils] [PATCH] Fix ipv6less build

[Graham Gower]

The patch below is required to build against an ipv6less uClibc.

-Graham

diff -ur inetutils-1.8.orig/ping/ping_common.h inetutils-1.8/ping/ping_common.h
--- inetutils-1.8.orig/ping/ping_common.h       2010-05-15 20:55:47.000000000 
+0930
+++ inetutils-1.8/ping/ping_common.h    2010-12-01 12:19:08.000000000 +1030
@@ -17,10 +17,14 @@
   You should have received a copy of the GNU General Public License
   along with this program.  If not, see `http://www.gnu.org/licenses/'. */
 
+#include <config.h>
+
 #include <netinet/in_systm.h>
 #include <netinet/in.h>
 #include <netinet/ip.h>
+#ifdef HAVE_IPV6
 #include <netinet/icmp6.h>
+#endif
 #include <icmp.h>
 #include <error.h>
 #include <progname.h>
@@ -66,13 +70,19 @@
   (t).tv_usec = ((i)%PING_PRECISION)*(1000000/PING_PRECISION) ;\
 } while (0)
 
+#ifdef HAVE_IPV6
 /* Not sure about this step*/
 #define _PING_BUFLEN(p, USE_IPV6) ((USE_IPV6)? ((p)->ping_datalen + sizeof 
(struct icmp6_hdr)) : \
                                   ((p)->ping_datalen + sizeof (icmphdr_t)))
+#else
+#define _PING_BUFLEN(p, USE_IPV6) ((p)->ping_datalen + sizeof (icmphdr_t))
+#endif
 
+#ifdef HAVE_IPV6
 typedef int (*ping_efp6) (int code, void *closure, struct sockaddr_in6 * dest,
                          struct sockaddr_in6 * from, struct icmp6_hdr * icmp,
                          int datalen);
+#endif
 
 typedef int (*ping_efp) (int code,
                         void *closure,
@@ -81,13 +91,17 @@
                         struct ip * ip, icmphdr_t * icmp, int datalen);
 
 union event {
+#ifdef HAVE_IPV6
   ping_efp6 handler6;
+#endif
   ping_efp handler;
 };
 
 union ping_address {
   struct sockaddr_in ping_sockaddr;
+#ifdef HAVE_IPV6
   struct sockaddr_in6 ping_sockaddr6;
+#endif
 };
 
 typedef struct ping_data PING;