+PKG_CHECK_MODULES(GLIB, glib-2.0 >= 2.14 gobject-2.0 gthread-2.0 gmodule-export-2.0)
+PKG_CHECK_MODULES(GTK, gtk+-2.0 >= 2.16 gtkglext-1.0)
+PKG_CHECK_MODULES(SOUP, libsoup-2.4 >= 2.26)
+
+# Define odd RSL install location
+AC_CHECK_LIB(rsl, RSL_wsr88d_to_radar, RLS_LIBS="-lrsl")
+AM_CONDITIONAL(HAVE_RSL, test "$RSL_LIBS" != "")