New Equinox application should be created which should start the workbench in the Debug perspective (or simplified one if possible) and the CDT GDB backend should be already attached to a process as given on the command line to that application.
This bug appears to have been reported against 'rawhide' during the Fedora 19 development cycle. Changing version to '19'. (As we did not run this process for some time, it could affect also pre-Fedora 19 development cycle bugs. We are very sorry. It will help us with cleanup during Fedora 19 End Of Life. Thank you.) More information and reason for this action is here: https://fedoraproject.org/wiki/BugZappers/HouseKeeping/Fedora19
Switch to Rawhide. Jeff, shouldn't latest cdt has some launcher in /usr/bin for the standalone debugger?
Closing as fixed now. There is /usr/bin/cdtdebug now.