Steps:
1. Create compiler1
2. Create compiler2
3. Create debugger config1 (Settings -> Debugger->GDB Debugger->Create config)
4. Create debugger config2
5. Change the default debug config in the toolchain executable tab for compiler1 to config1
6. Change the default debug config in the toolchain executable tab for compiler2 to config2
7. Debug->Active debugger's -> Target's default
8. Use compiler1 for target1
9. Use compiler2 for target2
10. Report any problems