I have installed the gnu gcc compiler and have compiled a test program. Unfortunately it gives me unresolved externals during run time. The only #include is for "iostream". Does anyone have any insite on what is wrong? Carl McNamee Systems Administrator Billing Concepts shell/iX> gcc test.cpp -o carl shell/iX> ll total 523 -rwxrwx--- 1 MANAGER.SYS SYS 133120 Jun 30 14:31 carl -rw------- 1 MANAGER.SYS SYS 1040 Jun 30 13:50 test.cpp shell/iX> ./carl UNRESOLVED EXTERNALS: __ls__7ostreamPCc (LDRERR 512) UNRESOLVED EXTERNALS: __ls__7ostreamPFR7ostream_R7ostream (LDRERR 512) UNRESOLVED EXTERNALS: __ls__7ostreami (LDRERR 512) UNRESOLVED EXTERNALS: endl__FR7ostream (LDRERR 512) **** EXEC FUNCTION FAILED; subsys =517; info = 48 ABORT: /SYS/CARL/c++/carl NM SYS a.00ab24a0 dbg_abort_trace+$24 [1] + Done(134) ./carl 4391024 Abort ./carl shell/iX> Billing Concepts Corp., a NASDAQ listed Company, Symbol:BILL