Hi. I've downloaded the ecos-trunk-20060319 snapshot from eCoscentric and tried to compile it on arm-elf-gcc 4.1.0. I got the errors below: .../include/cyg/kernel/sched.hxx:181: error: extra qualification 'Cyg_Scheduler::' on member 'thread_entry' .../include/cyg/kernel/thread.hxx:315: error: extra qualification 'Cyg_Thread::' on member 'reinitialize' I edited the files in /packages/kernel/current/include and removed the qualifiers. So it compiled OK. sched.hxx from: /// perform thread startup housekeeping/ void Cyg_Scheduler::thread_entry( Cyg_Thread *thread ); to: /// perform thread startup housekeeping/ void thread_entry( Cyg_Thread *thread ); thread.hxx from: /// Re-initialize the thread back to it's initial state./ void Cyg_Thread::reinitialize(); to: /// Re-initialize the thread back to it's initial state./ void reinitialize(); Regards Marco Cruz