https://sourceforge.net/tracker/?func=detail&aid=3314009&group_id=172030&atid=860196
http://bugs.gentoo.org/370655

--- src/nfsmount_clnt.c
+++ src/nfsmount_clnt.c
@@ -3,6 +3,9 @@
  * It was generated using rpcgen.
  */
 
+#include "config.h"
+#if HAVE_NFS
+
 #include "nfsmount.h"
 /*
  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
@@ -279,3 +282,5 @@
 	}
 	return (&clnt_res);
 }
+
+#endif
--- src/nfsmount.c
+++ src/nfsmount.c
@@ -34,6 +34,10 @@
  * nfsmount.c,v 1.1.1.1 1993/11/18 08:40:51 jrs Exp
  */
 
+#include "config.h"
+
+#if HAVE_NFS
+
 #include <unistd.h>
 #include <stdio.h>
 #include <string.h>
@@ -865,3 +869,5 @@
         return port;
 }
 #endif
+
+#endif
--- src/nfsmount_xdr.c
+++ src/nfsmount_xdr.c
@@ -3,6 +3,9 @@
  * It was generated using rpcgen.
  */
 
+#include "config.h"
+#if HAVE_NFS
+
 #include "nfsmount.h"
 /*
  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
@@ -300,3 +303,5 @@
 		 return FALSE;
 	return TRUE;
 }
+
+#endif
--- src/shutdown.c
+++ src/shutdown.c
@@ -24,7 +24,6 @@
 #include <sys/types.h>
 #include <unistd.h>
 #include <time.h>
-#include <rpc/types.h>         /* for caddr_t */
 
 #include "watch_err.h"
 #include "extern.h"
--- src/sundries.c
+++ src/sundries.c
@@ -12,7 +12,6 @@
 #include <mntent.h>		/* for MNTTYPE_SWAP */
 #include "fstab.h"
 #include "sundries.h"
-#include "nfsmount.h"
 
 
 /* String list constructor.  (car() and cdr() are defined in "sundries.h").  */