Lpc2000

Hi:
I 'm using Keil with GNU Compiler, and when I try to create a new 
App, I get this error when I build:

linking...
startup.o (.text+0x12c):/cygdrive/c/ARMApp/Startup.s:400: undefined 
reference to '_start'
collect2: ld returned 1 exit status
Target not created

The startup.s file was copied automatically by Keil from 
C:\Keil\ARM\GNU\Startup\Philips\Startup.s and it is supposed it comes 
with GNU.
When I replaced the startup.s file with one that comes in others 
example, the program build fine.
Do I have to setup other(s) parameter(s) in order to have 
the "original startup.s" working?

Gus