diff --git a/common/Xregion/Xlibint.h b/common/Xregion/Xlibint.h
new file mode 100644
index 0000000..9b9ae28
--- /dev/null
+++ b/common/Xregion/Xlibint.h
@@ -0,0 +1,48 @@
+
+/*
+
+Copyright 1984, 1985, 1987, 1989, 1998  The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of The Open Group shall
+not be used in advertising or otherwise to promote the sale, use or
+other dealings in this Software without prior written authorization
+from The Open Group.
+
+*/
+
+#ifndef _X11_XLIBINT_H_
+#define _X11_XLIBINT_H_ 1
+
+/*
+ *	Xlibint.h - Header definition and support file for the internal
+ *	support routines used by the C subroutine interface
+ *	library (Xlib) to the X Window System.
+ *
+ *	Warning, there be dragons here....
+ */
+
+#include <stdlib.h>
+
+#define Xfree(ptr) free((ptr))
+#define Xmalloc(size) malloc((size))
+#define Xrealloc(ptr, size) realloc((ptr), (size))
+#define Xcalloc(nelem, elsize) calloc((nelem), (elsize))
+
+#endif /* _X11_XLIBINT_H_ */