   cvs -d:pserver:anoncvs@cvs.digium.com:/usr/cvsroot co asterisk-addons

   cd ../asterisk-addons
   - Add a line into asterisk-addons/Makefile reading:
     CFLAGS+=-DMYSQL_LOGUNIQUEID
   - edit cdr_addon_mysql.c and replace the line reading
       AST_MUTEX_DEFINE_STATIC(mysql_lock);
     with
       static ast_mutex_t  mysql_lock   = AST_MUTEX_INITIALIZER;
   - change the asterisk table name from cdr to asterisk_cdr in 
     cdr_addon_mysql.c

   chmod 644 cdr_addon_mysql.so
   cp cdr_addon_mysql.so /usr/lib/asterisk/modules/
   restart Asterisk
   