gtk: Issue warning if `make check' cannot open DISPLAY.

diff --git a/src/gtk/check.scm b/src/gtk/check.scm
index a4b6100370adca8379fb678473125ae7a387b16a..20fb553261c3f30524e1a2ce9c9d12395f6aa642 100644 (file)
--- a/src/gtk/check.scm
+++ b/src/gtk/check.scm
@@ -10,4 +10,5 @@
 
 (load-option 'GTK)
 (if (gtk-thread-running?)
-    (load "gtk-check" (->environment '(GTK))))
\ No newline at end of file
+    (load "gtk-check" (->environment '(GTK)))
+    (warn "Could not test the GTK subsystem without a DISPLAY."))
\ No newline at end of file