add Xlib.h - needed on Solaris

diff --git a/plugin/gtk/gvdevice_gtk.c b/plugin/gtk/gvdevice_gtk.c
index 22b2e79eb825ed163338d24012ce0a10cd0f1982..9e5447658ae5ba1ec9fde53236d524d02148883c 100644 (file)
--- a/plugin/gtk/gvdevice_gtk.c
+++ b/plugin/gtk/gvdevice_gtk.c
@@ -35,6 +35,7 @@
 
 #include <cairo.h>
 #ifdef CAIRO_HAS_XLIB_SURFACE
+#include <X11/Xlib.h>
 #include <X11/Xutil.h>
 
 #include "interface.h"