Index: build/test/test
==================================================================
--- build/test/test
+++ build/test/test
@@ -42,10 +42,16 @@
 	fi
 
 	rm -f "${file}"
 done
 
+# Start Xvfb for X11-based tests
+Xvfb -nolisten tcp :31 >/dev/null 2>/dev/null &
+XVFB_PID="$!"
+DISPLAY=:31
+export DISPLAY
+
 failed=""
 for kit in normal normal-zip normal-threaded normal-threaded-zip normal-statictk normal-notk normal-threaded-notk normal-threaded-zip-notk normal-nomk4 min min-static win32-i586 win32-i586-zip win32-i586-threaded win32-i586-threaded-zip win32-i586-notk win32-i586-threaded-notk win32-i586-nomk4 linux-arm-min; do
 	kitcreator="./kitcreator"
 	args=""
 	runnable="1"
@@ -316,5 +322,8 @@
 done
 
 if [ -n "${failed}" ]; then
 	echo "Failed: ${failed}"
 fi
+
+# Terminate Xvfb
+kill -9 "${XVFB_PID}"

ADDED   build/test/tests/07-tk.tcl
Index: build/test/tests/07-tk.tcl
==================================================================
--- build/test/tests/07-tk.tcl
+++ build/test/tests/07-tk.tcl
@@ -0,0 +1,22 @@
+#! /usr/bin/env tclsh
+
+# Determine if we should have Tk
+set buildflags [split [lindex $argv 1] -]
+foreach flag [list notk min] {
+	if {[lsearch -exact $buildflags $flag] != -1} {
+		exit 0
+	}
+}
+
+package require Tk
+
+label .l
+pack .l
+
+if {[winfo children .] == ".l"} {
+	exit 0
+}
+
+puts "Winfo Children: [winfo children .]"
+
+exit 1