=== modified file 'include/snmp_debug.h'
--- include/snmp_debug.h	2010-11-21 04:40:05 +0000
+++ include/snmp_debug.h	2010-11-30 09:06:48 +0000
@@ -5,5 +5,6 @@
 #define SQUID_SNMP_DEBUG_H
 
 SQUIDCEXTERN void snmplib_debug(int, const char *,...) PRINTF_FORMAT_ARG2;
+SQUIDCEXTERN void (*snmplib_debug_hook) (int, char *,...);
 
 #endif /* SQUID_SNMP_DEBUG_H */

=== modified file 'src/snmp_core.cc'
--- src/snmp_core.cc	2010-08-01 06:16:06 +0000
+++ src/snmp_core.cc	2010-11-30 09:19:06 +0000
@@ -86,7 +86,6 @@
 static oid *snmpCreateOid(int length,...);
 mib_tree_entry * snmpLookupNodeStr(mib_tree_entry *entry, const char *str);
 int snmpCreateOidFromStr(const char *str, oid **name, int *nl);
-SQUIDCEXTERN void (*snmplib_debug_hook) (int, char *);
 static oid *static_Inst(oid * name, snint * len, mib_tree_entry * current, oid_ParseFn ** Fn);
 static oid *time_Inst(oid * name, snint * len, mib_tree_entry * current, oid_ParseFn ** Fn);
 static oid *peer_Inst(oid * name, snint * len, mib_tree_entry * current, oid_ParseFn ** Fn);
@@ -99,7 +98,9 @@
 static oid_ParseFn *snmpTreeGet(oid * Current, snint CurrentLen);
 static mib_tree_entry *snmpTreeEntry(oid entry, snint len, mib_tree_entry * current);
 static mib_tree_entry *snmpTreeSiblingEntry(oid entry, snint len, mib_tree_entry * current);
-static void snmpSnmplibDebug(int lvl, char *buf);
+
+// This is a callback used by snmplib (a C library). Thanks Sun...
+extern "C" void snmpSnmplibDebug(int lvl, char *buf);
 
 /*
  * The functions used during startup: