# reason: rpcsvc/ypclnt.h is only present in glibc, so check for it

--- a/configure.in
+++ b/configure.in
@@ -19,6 +19,7 @@
 dnl Checks for header files.
 AC_HEADER_STDC
 AC_CHECK_HEADERS(fcntl.h sys/time.h unistd.h)
+AC_CHECK_HEADERS(rpcsvc/ypclnt.h)
 
 dnl Checks for typedefs, structures, and compiler characteristics.
 AC_CHECK_SIZEOF(short)

--- a/host2ip.c
+++ b/host2ip.c
@@ -4,7 +4,9 @@
 #include <netdb.h>           /* gethostbyname() */
 #include <netinet/in.h>      /* sockaddr_in */
 #include <arpa/inet.h>       /* inet_addr() */
+#ifdef HAVE_RPCSVC_YPCLNT_H
 #include <rpcsvc/ypclnt.h>   /* YP */
+#endif
 #include <ctype.h>           /* isspace() */
 #include <string.h>          /* strlen() */
 
@@ -27,6 +29,8 @@
     while (*host && isspace((int)*host)) host++;  
   }
 
+  /* pre-set */
+  in.s_addr = INADDR_ANY;
   /* Check whether this is a dotted decimal. */
   if (!host) {
     in.s_addr = INADDR_ANY;
@@ -38,6 +42,7 @@
   else if ((hep = gethostbyname(host))) {
     in = *(struct in_addr *)(hep->h_addr_list[0]);
   }
+#ifdef HAVE_RPCSVC_YPCLNT_H && USE_NIS
   /* As a last resort, try YP. */
   else {
     static char *domain = 0;  /* YP domain */
@@ -47,10 +52,8 @@
     if (!domain) yp_get_default_domain(&domain);
     if (yp_match(domain, "hosts.byname", host, strlen(host), &value, &value_len) == 0) {
       in.s_addr = inet_addr(value);
-    } else {
-      /* Everything failed */
-      in.s_addr = INADDR_ANY;
     }
   }
+#endif
   return in;
 } /* host2ip */