host2ip.c: disable NIS support when building with uClibc

uClibc doesn't have NIS support, so simply disable the fallback.

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
---
 host2ip.c |   11 +++++++++++
 1 file changed, 11 insertions(+)

Index: rtptools-1.20/host2ip.c
===================================================================
--- rtptools-1.20.orig/host2ip.c
+++ rtptools-1.20/host2ip.c
@@ -3,7 +3,16 @@
 #include <netdb.h>           /* gethostbyname() */
 #include <netinet/in.h>      /* sockaddr_in */
 #include <arpa/inet.h>       /* inet_addr() */
+
+#include <features.h>
+#ifndef __UCLIBC__
+#define HAVE_YP
+#endif
+
+#ifdef HAVE_YP
 #include <rpcsvc/ypclnt.h>   /* YP */
+#endif
+
 #include <string.h>          /* strlen() added by Akira 12/27/01 */ 
 #include "sysdep.h"
 
@@ -28,6 +37,7 @@
   else if ((hep = gethostbyname(host))) {
     in = *(struct in_addr *)(hep->h_addr_list[0]);
   }
+#ifdef HAVE_YP
   /* As a last resort, try YP. */
   else {
     static char *domain = 0;  /* YP domain */
@@ -39,5 +49,6 @@
       in.s_addr = inet_addr(value);
     }
   }
+#endif
   return in;
 } /* host2ip */