The gtkmm version 2.24.3 has an upstream bug which will cause the compilation of applications which use gtkmm to break.

https://bugzilla.gnome.org/show_bug.cgi?id=697835

So, upgrading the gtkmm recipe in meta-oe layer to 2.24.4 solves the problem, there are no dependency changes when bumping the version to 2.24.4