Eclipse-CDT: Base class ” not in include paths for current project

eclipseDon’t you just hate weird things like this? You have a nice little project in Eclipse, it’s all is working fine, auto-complete, build, everything.

BUT:

When you try to add a new class using the File -> New -> Class menu, you get this error:

Base class 'myclassname' not in include paths for current project.

Doh!

This one is easy to fix.

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