From 342325db8e1d3ed8053185d9eeb8280fffc6dce2 Mon Sep 17 00:00:00 2001
From: Doug Torrance <dtorrance@piedmont.edu>
Date: Fri, 17 Apr 2020 12:48:48 -0400
Subject: [PATCH] wmifinfo: Use extern when declaring global variables in
 header file.

Avoids a FTBFS when compiling with -fno-common, which will be default in
GCC 10.
---
 wmifinfo/xutils.c |  6 ++++++
 wmifinfo/xutils.h | 10 +++++-----
 2 files changed, 11 insertions(+), 5 deletions(-)

diff --git a/wmifinfo/xutils.c b/wmifinfo/xutils.c
index 92050fd..ed40202 100644
--- a/wmifinfo/xutils.c
+++ b/wmifinfo/xutils.c
@@ -41,6 +41,12 @@
 #include "xutils.h"
 
 
+Display		*display;
+Window          Root;
+Window          iconwin, win;
+int             screen;
+int             DisplayDepth;
+
 
 /*
  *   X11 Variables
diff --git a/wmifinfo/xutils.h b/wmifinfo/xutils.h
index fcd25f6..cf1ef5e 100644
--- a/wmifinfo/xutils.h
+++ b/wmifinfo/xutils.h
@@ -18,11 +18,11 @@ typedef struct {
 /*
  *   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;