pull in string prototypes
--- gdk/gdkinputcommon.h
+++ gdk/gdkinputcommon.h
@@ -24,6 +24,8 @@
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
+#include <string.h>
+
#if defined(XINPUT_GXI) || defined(XINPUT_XFREE)
/* Forward declarations */