VDSP allowed a link to a file rather than a CCES copy

Lets suppose I have

Project1  with files  P1.c P1.1.c P1.1.c

Project2 with file P2.c P2.1.c P2.2.c

and I want to use P1.c inside  Project 2

with VDSP I could

Make Project 2 active -- add file P1.c to project

with CCES

I seem to need to do 'IMPORT' P1.c  which makes a second copy of P1.c inside Project 2

which is not what I want to

With CCES -- do I have to access a copy of P1.c from say a CVS and place into Project 2

and then update P1.c from CVS everytime I want to recompile Project2

or do I have to do something else

I have used 'advanced' as option during import -- and generated virtual link (which is not a copy) inside src

but then make complains there is no rule to make P1.c when Project2 is compiled

however if I just has a virtual link that was not inside a directory -- it seemed to work

Is this the way CCES is supposed to work?