https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69953
--- Comment #17 from john.frankish at outlook dot com --- This is perhaps worse than I thought - I went back and re-compiled libsigc++, glibmm, atkmm, cairomm, pangomm and gtkmm using gcc-5.2.0 without "-flto -fuse-linker-plugin". I then compiled inkscape-0.91 again and it fails at the final linking stage in a similar fashion as that when I compiled all of the above using lto: CXXLD inkscape widgets/gradient-selector.o: In function `Gtk::TreeViewColumn::TreeViewColumn<int>(Glib::ustring const&, Gtk::TreeModelColumn<int> const&)': gradient-selector.cpp:(.text._ZN3Gtk14TreeViewColumnC1IiEERKN4Glib7ustringERKNS_15TreeModelColumnIT_EE[_ZN3Gtk14TreeViewColumnC5IiEERKN4Glib7ustringERKNS_15TreeModelColumnIT_EE]+0x29): undefined reference to `VTT for Gtk::TreeViewColumn' gradient-selector.cpp:(.text._ZN3Gtk14TreeViewColumnC1IiEERKN4Glib7ustringERKNS_15TreeModelColumnIT_EE[_ZN3Gtk14TreeViewColumnC5IiEERKN4Glib7ustringERKNS_15TreeModelColumnIT_EE]+0x65): undefined reference to `VTT for Gtk::TreeViewColumn' gradient-selector.cpp:(.text._ZN3Gtk14TreeViewColumnC1IiEERKN4Glib7ustringERKNS_15TreeModelColumnIT_EE[_ZN3Gtk14TreeViewColumnC5IiEERKN4Glib7ustringERKNS_15TreeModelColumnIT_EE]+0x81): undefined reference to `VTT for Gtk::TreeViewColumn' gradient-selector.cpp:(.text._ZN3Gtk14TreeViewColumnC1IiEERKN4Glib7ustringERKNS_15TreeModelColumnIT_EE[_ZN3Gtk14TreeViewColumnC5IiEERKN4Glib7ustringERKNS_15TreeModelColumnIT_EE]+0x91): undefined reference to `vtable for Gtk::TreeViewColumn' gradient-selector.cpp:(.text._ZN3Gtk14TreeViewColumnC1IiEERKN4Glib7ustringERKNS_15TreeModelColumnIT_EE[_ZN3Gtk14TreeViewColumnC5IiEERKN4Glib7ustringERKNS_15TreeModelColumnIT_EE]+0x9a): undefined reference to `vtable for Gtk::TreeViewColumn' gradient-selector.cpp:(.text._ZN3Gtk14TreeViewColumnC1IiEERKN4Glib7ustringERKNS_15TreeModelColumnIT_EE[_ZN3Gtk14TreeViewColumnC5IiEERKN4Glib7ustringERKNS_15TreeModelColumnIT_EE]+0xa8): undefined reference to `vtable for Gtk::TreeViewColumn' gradient-selector.cpp:(.text._ZN3Gtk14TreeViewColumnC1IiEERKN4Glib7ustringERKNS_15TreeModelColumnIT_EE[_ZN3Gtk14TreeViewColumnC5IiEERKN4Glib7ustringERKNS_15TreeModelColumnIT_EE]+0xda): undefined reference to `VTT for Gtk::TreeViewColumn' gradient-selector.cpp:(.text._ZN3Gtk14TreeViewColumnC1IiEERKN4Glib7ustringERKNS_15TreeModelColumnIT_EE[_ZN3Gtk14TreeViewColumnC5IiEERKN4Glib7ustringERKNS_15TreeModelColumnIT_EE]+0xef): undefined reference to `VTT for Gtk::TreeViewColumn' gradient-selector.cpp:(.text._ZN3Gtk14TreeViewColumnC1IiEERKN4Glib7ustringERKNS_15TreeModelColumnIT_EE[_ZN3Gtk14TreeViewColumnC5IiEERKN4Glib7ustringERKNS_15TreeModelColumnIT_EE]+0x104): undefined reference to `VTT for Gtk::TreeViewColumn' ... input.cpp:(.text._ZN3Gtk14TreeViewColumnC1IN4Glib6RefPtrIN3Gdk6PixbufEEEEERKNS2_7ustringERKNS_15TreeModelColumnIT_EE[_ZN3Gtk14TreeViewColumnC5IN4Glib6RefPtrIN3Gdk6PixbufEEEEERKNS2_7ustringERKNS_15TreeModelColumnIT_EE]+0x104): undefined reference to `VTT for Gtk::TreeViewColumn' collect2: error: ld returned 1 exit status Makefile:6891: recipe for target 'inkscape' failed make[3]: *** [inkscape] Error 1 make[3]: Leaving directory '/usr/src/inkscape-0.91/src' Makefile:5048: recipe for target 'all' failed make[2]: *** [all] Error 2 make[2]: Leaving directory '/usr/src/inkscape-0.91/src' Makefile:1401: recipe for target 'all-recursive' failed make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory '/usr/src/inkscape-0.91' Makefile:1096: recipe for target 'all' failed make: *** [all] Error 2
