--- dx-4.2.0/src/exec/libdx/mem.c~	2003-02-18 20:34:48.000000000 +0100
+++ dx-4.2.0/src/exec/libdx/mem.c	2003-02-18 20:34:48.000000000 +0100
@@ -69,6 +69,7 @@
 #endif
 
 #include <string.h>
+#include <errno.h>
 #include <dx/dx.h>
 #include "../dpexec/dxmain.h"
 
@@ -291,7 +292,6 @@
     uint64 totalsize = 0;
     Pointer tbase, tend;
     int tcount;
-    extern int errno;
     char *cp;
 
     /* decide on shared mem or the data segment */