At some stage in your development process, you might come across a situation where you want to use GDB to see what’s going on inside the server process. Doing this is really simple as described in the Drizzle wiki:

$ cd /path/to/drizzle_source/tests
$ ./dtr --start-and-exit --gdb

However, you will find that the Server process will always fail to start. Don’t stress yet, the issue is simple. The --gdb startup routine fails because it tries to interact with a X server which you haven’t loaded.

Does this sound familiar? what you want to do in this case is use X11.app instead of Terminal.app (or iTerm) and ssh into the remote box with the -X option. You should then be able to simply follow the instructions on the Drizzle wiki.

That’s it, easy :)