Qnx 6.4.0 compilation problem

in fact i install qnx 6.4.0 and when i compile whit gcc or qcc he said that NO SUCH FILE OR DIRECTORY FOR UNISTD.H FOR SIGNAL .H etc etc…t
i dont understand what i had to do … how can i install library…? like unistd.h or signal.h or stdio.h or…

Well if you are trying to compile a program that gets an error SIGNAL.H not found, you probably have a Windows program on your hands. Windows doesn’t consider case in file names. If so you will have to change SIGNAL.H to signal.h as it aught to be.