i installed cygwin and GNUARM 4.1, then i open example Blinky under C:\Keil\ARM\GNU\Examples\
also set toolchain as http://www.keil.com/support/docs/3127.htm told.
when i clik rebuild all target, the output window show: Build target 'LPC2106' assembling Startup.s... Target not created
it seems GNUARM working, but the there's nothing in startup.o, just 0 byte length.
and i don't know why assembling Startup.s... followed by Target not created, how about the BLINKY.C?
it's ok now.
i reintalled GNUARM4.1.0, the version i installed before is GNUARM4.1.1.
the latest is not best.
authough i encountered other problem as hardware fp, the above problem was disappear.