How to handle differrnt modules which has same file name ?

[z_axis]

For ezample, the directory is as below:
d:\src\p1\a.d
d:\src\p2\a.d

d:\src\test.d

import p1.a;
import p2.a;

void main(char[][] args) {
//...
}


d:\src\dmd -O -release -w -L/SUBSYSTEM:windows:5 test.d p1\a.d p2\a.d

compling is ok however cannot link !!!  because p2.a.obj will overwrite  
p1.a.obj. then there is only one a.obj in d:\src !!!
what is the best way to solve this problem ?


regards!