compile it, once you have compiled it you will get some (maybe a lot) of errors and look at the first one. You may find that Tasking has a keyword Bitdefine and this gives you an error in Keil. Ok you then realize that Bitdefine is sbit in Keil and you do a global reolace. Then repear the compile, realize the reason for one error do a global replace, repeat, repeat and eventually the thing will compile without errors and warnings under Keil. been there, done that

Erik