Compiling and Linking

I am in the process of moving our software from QNX 4 to 6.3. We’ve
developed this software using the Photon Application builder.
Our software looks for include files and certain libraries whose path we
specify in the Makefile under the src/default directory.

Now, in QNX 6.3 in which Makefile do i specify the paths of my include
directory and libraries so that when i build my code, it knows where to look
for the include files and library functions?