--- dx-4.4.4/src/exec/libdx/mem.c.errno	2006-01-05 23:55:49.000000000 +0100
+++ dx-4.4.4/src/exec/libdx/mem.c	2009-01-31 15:17:32.000000000 +0100
@@ -77,6 +77,7 @@
 #endif
 
 #include <string.h>
+#include <errno.h>
 #include <dx/dx.h>
 #include "../dpexec/dxmain.h"
 
@@ -332,7 +333,6 @@
     ulong totalsize = 0;
     Pointer tbase, tend;
     int tcount;
-    extern int errno;
     char *cp;
 
     /* decide on shared mem or the data segment */