How can I get Eclipse to index an entire C/C++ source tree that contains multiple "make projects"?

I'm having trouble getting Eclipse to index my source code. I'm using Eclipse Helios on Windows XP at the moment.

I have a directory called src. Within it, I have a bunch of dirs, something like this:

 src
   -include (common headers)
   -lib
     -libIO (source code for this library)
     -libGUI  (source code for this library)
   -pgms
     -pgm1  (source code and headers for this pgm)
     -pgm2  (source code and headers for this pgm)

Each leaf has its own Makefile. There is no top-level Makefile in src. pgm1 can and does include files from include and lib/libIO and lib/libGUI.

Basically, I want Eclipse to index my entire src directory, without having to set up a C/C++ project for every leaf in my tree. I can't seem to find a way to make this happen.

Here's my symptoms; what I'm trying to solve for:

When editing source in the pgm1 dir, it references functions that are declared in my include dir header files and defined in source files found in lib/libIO.

However, when I press F3 to get to the declaration of a function, Eclipse says "Could not find symbol 'X' in index". I can't seem to get Eclipse to find either the header declaration or the source definition for the method under my cursor (like the Java module does perfectly). Is this possible?

Solution

I managed to solve this thanks to comments here.... I ended up recreating my project. I used the Import method to download a project from CVS, and told it to use the New Project wizard to do so. When I got the New Project dialog, I told it this was a C++ Project, and the indexing now works fine.

I still wish I could index files without having to attach a specific project type to it, but at least I found an answer.

Thanks for the help all.