GTK+ now requires GLib 2.37.1 since it uses g_test_trap_subprocess,
which is new in that GLib version.
m4_define([gtk_binary_version], [3.0.0])
# required versions of other packages
-m4_define([glib_required_version], [2.37.0])
+m4_define([glib_required_version], [2.37.1])
m4_define([pango_required_version], [1.32.4])
m4_define([atk_required_version], [2.7.5])
m4_define([cairo_required_version], [1.10.0])