--- mstools/h/errno.h	2018/08/09 18:20:01	1.1.1.1
+++ mstools/h/errno.h	2018/08/09 18:23:02	1.1.1.4
@@ -1,7 +1,7 @@
 /***
 *errno.h - system wide error numbers (set by system calls)
 *
-*	Copyright (c) 1985-1990, Microsoft Corporation. All rights reserved.
+*	Copyright (c) 1985-1993, Microsoft Corporation. All rights reserved.
 *
 *Purpose:
 *	This file defines the system-wide error numbers (set by
@@ -18,14 +18,33 @@ extern "C" {
 #endif
 
 
-#if (_MSC_VER <= 600)
-#define __cdecl _cdecl
+/*
+ * Conditional macro definition for function calling type and variable type
+ * qualifiers.
+ */
+#if   ( (_MSC_VER >= 800) && (_M_IX86 >= 300) )
+
+/*
+ * Definitions for MS C8-32 (386/486) compiler
+ */
+#define _CRTAPI1 __cdecl
+#define _CRTAPI2 __cdecl
+
+#else
+
+/*
+ * Other compilers (e.g., MIPS)
+ */
+#define _CRTAPI1
+#define _CRTAPI2
+
 #endif
 
+
 /* declare reference to errno */
 
 #ifdef	_MT
-extern int * _errno(void);
+extern int * _CRTAPI1 _errno(void);
 #define errno	(*_errno())
 #else
 extern int errno;
@@ -33,7 +52,6 @@ extern int errno;
 
 /* Error Codes */
 
-#define EZERO		0
 #define EPERM		1
 #define ENOENT		2
 #define ESRCH		3
@@ -48,7 +66,6 @@ extern int errno;
 #define ENOMEM		12
 #define EACCES		13
 #define EFAULT		14
-#define ENOTBLK 	15
 #define EBUSY		16
 #define EEXIST		17
 #define EXDEV		18
@@ -59,7 +76,6 @@ extern int errno;
 #define ENFILE		23
 #define EMFILE		24
 #define ENOTTY		25
-#define ETXTBSY 	26
 #define EFBIG		27
 #define ENOSPC		28
 #define ESPIPE		29
@@ -68,8 +84,17 @@ extern int errno;
 #define EPIPE		32
 #define EDOM		33
 #define ERANGE		34
-#define EUCLEAN 	35
-#define EDEADLOCK	36
+#define EDEADLK		36
+#define ENAMETOOLONG	38
+#define ENOLCK		39
+#define ENOSYS		40
+#define ENOTEMPTY	41
+#define EILSEQ		42
+
+/*
+ * Support EDEADLOCK for compatibiity with older MS-C versions.
+ */
+#define EDEADLOCK	EDEADLK
 
 #ifdef __cplusplus
 }