Clang: any use of "throw" is flagged as an error

I have a generic C++ project, created with New File or Project - Import Project -> Import Existing Project.

When using the clang code model, any use of throw is flagged as an error as

error: cannot use 'throw' with exceptions disabled

A related problem is that in this version Creator shows lots and lots of warnings (such as narrowing conversion) which I would rather disable. There seems to be no way to disable it.

I could not find a way to specify compiler flags with a generic project.