diff --git a/packages/x11/fpmake.pp b/packages/x11/fpmake.pp
index 93379cf9e5..d3f828b9cf 100644
--- a/packages/x11/fpmake.pp
+++ b/packages/x11/fpmake.pp
@@ -188,6 +188,7 @@ begin
           AddUnit('x');
           AddUnit('xlib');
         end;
+    T:=P.Targets.AddUnit('xmd.pp');
 
 {$ifndef ALLPACKAGES}
     Run;
diff --git a/packages/x11/src/xmd.pp b/packages/x11/src/xmd.pp
new file mode 100644
index 0000000000..99ec0b427f
--- /dev/null
+++ b/packages/x11/src/xmd.pp
@@ -0,0 +1,101 @@
+(***********************************************************
+
+Copyright 1987, 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.
+
+
+Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
+
+                        All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its
+documentation for any purpose and without fee is hereby granted,
+provided that the above copyright notice appear in all copies and that
+both that copyright notice and this permission notice appear in
+supporting documentation, and that the name of Digital not be
+used in advertising or publicity pertaining to distribution of the
+software without specific, written prior permission.
+
+DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
+ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
+DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
+ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+SOFTWARE.
+
+******************************************************************)
+
+unit xmd;
+
+interface
+
+(*
+ *  Xmd.h: MACHINE DEPENDENT DECLARATIONS.
+ *)
+
+(*
+ * Bitfield suffixes for the protocol structure elements, if you
+ * need them.  Note that bitfields are not guaranteed to be signed
+ * (or even unsigned) according to ANSI C.
+ *)
+//# define B32 /* bitfield not needed on architectures with native 32-bit type */
+//# define B16 /* bitfield not needed on architectures with native 16-bit type */
+type
+  PPCARD64 = ^PCARD64;
+  PCARD64 = ^CARD64;
+  CARD64 = UInt64;
+
+  PPCARD32 = ^PCARD32;
+  PCARD32 = ^CARD32;
+  CARD32 = UInt32;
+
+  PPCARD16 = ^PCARD16;
+  PCARD16 = ^CARD16;
+  CARD16 = UInt16;
+
+  PPCARD8 = ^PCARD8;
+  PCARD8 = ^CARD8;
+  CARD8 = UInt8;
+
+(*
+ * was definitions for sign-extending bitfields on architectures without
+ * native types smaller than 64-bit, now just backwards compatibility
+ *)
+//# define cvtINT8toInt(val) (val)
+//# define cvtINT16toInt(val) (val)
+//# define cvtINT32toInt(val) (val)
+//# define cvtINT8toShort(val) (val)
+//# define cvtINT16toShort(val) (val)
+//# define cvtINT32toShort(val) (val)
+//# define cvtINT8toLong(val) (val)
+//# define cvtINT16toLong(val) (val)
+//# define cvtINT32toLong(val) (val)
+
+(*
+ * this version should leave result of type (t * ), but that should only be
+ * used when not in MUSTCOPY
+ *)
+//# define NEXTPTR(p,t) (((t *)(p)) + 1)
+
+implementation
+end.