gtkmm2_files = glob.glob('gtkmm/*.cc')
Import('env libraries install_prefix')
-gtkmm2 = env.Copy()
+gtkmm2 = env.Clone()
gtkmm2.Merge([libraries['glibmm2'], libraries['gtk2'], libraries['sigc2'], libraries['pangomm'], libraries['atkmm'], libraries['gdkmm2'], libraries['cairomm'], libraries['gtk2-unix-print'] ])
gtkmm2.Append(CXXFLAGS = ['-DGLIBMM_DEFAULT_SIGNAL_HANDLERS_ENABLED', '-DGLIBMM_PROPERTIES_ENABLED', '-DGLIBMM_EXCEPTIONS_ENABLED'])