Hello, I was using C API under mysql-3.22.32. and I was forced to reinstall the mysql servr. Unfotunately I found only the version 3.23.23. Thw big problem is that the same sources give me under Mysql C API 3.33.23 the following message link error: In function my_compres_alloc my_compress. o (text +0x120) undefuned reference to 'compress'. And I'm completely stuck ! Anyhelp would be greatly appreciated ! Daniel