diff -urNZ a/configure.ac.in b/configure.ac.in --- a/configure.ac.in 2017-12-16 19:46:13.784914017 +0000 +++ b/configure.ac.in 2017-12-16 19:46:38.612477052 +0000 @@ -53,6 +53,7 @@ dnl *********************************** dnl *** Check for required packages *** dnl *********************************** +XDT_CHECK_PACKAGE([GIO], [gio-unix-2.0], [2.32.0]) XDT_CHECK_PACKAGE([GTHREAD], [gthread-2.0], [2.24.0]) XDT_CHECK_PACKAGE([GTK], [gtk+-3.0], [3.20.0]) XDT_CHECK_PACKAGE([LIBXFCE4UI], [libxfce4ui-2], [4.12.0])