--- src/lib/OS/string.c.orig	Tue Jul 14 02:54:03 1992
+++ src/lib/OS/string.c	Sun Jan 17 17:48:19 1999
@@ -31,11 +31,13 @@
  */
 
 extern "C" {
+#ifndef __FreeBSD__
 #ifndef tolower
     extern int tolower(int);
 #endif
 #ifndef toupper
     extern int toupper(int);
+#endif
 #endif
     extern long int strtol(const char*, char**, int);
     extern double strtod(const char*, char**);