Comment # 4 on bug 1185203 from Aaron Puchert

(In reply to Aaron Puchert from comment #3)
> I don't have it installed but kdevelop builds fine locally.
Ah, I guess it might be missing some features then:

-- Could NOT find Qt5Help (missing: Qt5Help_DIR)

But I'm not sure whether we need (lib)clang to build the QtHelp plugin.