Hi, if I open a .h file and go to a function declaration and execute semantic-analyze-proto-impl-toggle , I find that it is not able to find the implementation if Emacs has not visited it yet.  For example, if I open only Util.h then it won't find the function implementation in Util.cc.  But if I open Util.h and Util.cc in Emacs, then it does.

I imagine it's because I haven't indicated to EDE a way to find .cc files.

The directory structure is like this:
   (common-sub-root)/inc/Util.h
   (common-sub-root)/src/Util.cc
How may I customize my EDE project to know where to find .cc files?  I've observed semantic-analyze-proto-impl-toggle does not lead to a call to ede-expand-filename-impl which calls locate-fcn .