portability fixes
diff --git a/libasn1fix/asn1fix_internal.h b/libasn1fix/asn1fix_internal.h
index 040750d..6b15778 100644
--- a/libasn1fix/asn1fix_internal.h
+++ b/libasn1fix/asn1fix_internal.h
@@ -10,13 +10,29 @@
*/
#include <stdio.h>
#include <stdlib.h>
+#include <stdarg.h>
#include <string.h>
#include <ctype.h> /* isupper() */
#include <errno.h>
#include <assert.h>
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
#include <asn1parser.h> /* Our lovely ASN.1 parser module */
-#include <asn1fix.h>
+#include "asn1fix.h"
+
+#ifdef WIN32
+#define EX_NOINPUT 66
+#define EX_DATAERR 65
+#define snprintf _snprintf
+#define strcasecmp stricmp
+#endif
+
+#ifndef ETOOMANYREFS
+#define ETOOMANYREFS 144
+#endif
/*
* A definition of a function that will log error messages.