building R with debug symbols

[macporter90210@…]

I want to build R with debug symbols so I can more easily debug my C extensions and how they interact with R. I modified the portfile to use apple's gcc and the -g flag. It installed fine, but it seems that the debug symbols aren't found by gdb.

1. What should I do so that when I compile with -g, the symbols can be found?
2. Do I need to use apple's rather than the mp gcc to do this?
3. I think other people might find this useful so it would be nice if the debug variant, after appropriate corrections can be added to the port.

I attach the port diff.

[macporter90210@…]

portfile diff to add debug variant - doesn't seem to work