Gentoo bug report - https://bugs.gentoo.org/show_bug.cgi?id=399433
Patch from http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=321229

--- include/radiusclient.h.orig	2005-08-04 10:50:19.636354682 +0200
+++ include/radiusclient.h	2005-08-04 10:48:47.955569910 +0200
@@ -38,8 +38,13 @@
 # define __P(protos) ()
 #endif
 
+#if !(defined(__x86_64__))
 typedef unsigned long UINT4;
 typedef long 	      INT4;
+#else
+typedef unsigned int UINT4;
+typedef int 	     INT4;
+#endif
 
 #define AUTH_VECTOR_LEN		16
 #define AUTH_PASS_LEN		(3 * 16) /* multiple of 16 */