diff -Naur wmXName-0.01.orig/xutils.c wmXName-0.01/xutils.c
--- wmXName-0.01.orig/xutils.c	2002-06-28 11:34:26.000000000 +0200
+++ wmXName-0.01/xutils.c	2020-06-13 11:02:20.393108819 +0200
@@ -52,6 +52,11 @@
 GC		NormalGC;
 XpmIcon		wmgen;
 Pixmap		pixmask;
+Display		*display;
+Window          Root;
+Window          iconwin, win;
+int             screen; 
+int             DisplayDepth;
 
 
 
diff -Naur wmXName-0.01.orig/xutils.h wmXName-0.01/xutils.h
--- wmXName-0.01.orig/xutils.h	2002-06-28 11:34:59.000000000 +0200
+++ wmXName-0.01/xutils.h	2020-06-13 11:02:25.886113159 +0200
@@ -18,11 +18,11 @@
 /*
  *   Global variable
  */
-Display		*display;
-Window          Root;
-Window          iconwin, win;
-int             screen; 
-int             DisplayDepth;
+extern Display		*display;
+extern Window          Root;
+extern Window          iconwin, win;
+extern int             screen; 
+extern int             DisplayDepth;