Gentoo's Bugzilla –
Attachment 387124 Details for
Bug 526212media-gfx/hugin with sys-devel/gcc-4.9.? x11-libs/wxGTK-3.0 - CMakeFiles/PTBatcherGUI.dir/Batch.cpp.o: In function `wxEvtHandler::AddPendingEvent(wxEvent const&)': /usr/include/wx-3.0/wx/event.h:3395: undefined reference to `wxCommandEvent::Clone() const'