gdb problem - Remote (spawn error): No such file or director

I downloaded the qnx rtp and installed it in a win98 harddisk. I am
impressed by the easiness of installation and later the capability to
update packakes. Also the similarity between qnxrtp and Linux, with
familiar gnu tools, enables me to start development immediately without
much training or reading manuals.

However, I do have a serious problem now: gdb does not work. If I type
run, it will say:

Remote(spawn error): No such file or directory

Does anybody know what is missing?

Thanks. Please cc your reply to my email box.