When compiling cb without precompiled headers on FC4 (gcc 4.0.2) I get this error:
configmanager.h: In member function 'void ConfigManager::Read(const wxString&, std::map<wxString, T*, std::less<wxString>, std::allocator<std::pair<const wxString, T*> > >*)':
configmanager.h:252: error: there are no arguments to 'cbC2U' that depend on a template parameter, so a declaration of 'cbC2U' must be available
configmanager.h:252: error: (if you use '-fpermissive', G++ will accept your code, but allowing the use of an undeclared name is deprecated)
configmanager.h:253: error: there are no arguments to 'cbC2U' that depend on a template parameter, so a declaration of 'cbC2U' must be available
With pch enabled everything compiles fine.