From e766a681aa4df604b20ce2d23cd131b74af9eaf7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bodo=20M=C3=B6ller?= <bodo@openssl.org>
Date: Wed, 9 Jun 1999 13:23:38 +0000
Subject: Some pre-POSIX systems don't have unistd.h (but e.g. lib.c). Allow
 configuring the name of that header file.

---
 e_os2.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'e_os2.h')

diff --git a/e_os2.h b/e_os2.h
index 2bc0b48798..bd97b921a8 100644
--- a/e_os2.h
+++ b/e_os2.h
@@ -7,6 +7,16 @@
 extern "C" {
 #endif
 
+#include <openssl/opensslconf.h> /* OPENSSL_UNISTD */
+
+#ifdef MSDOS
+# define OPENSSL_UNISTD_IO <io.h>
+# define OPENSSL_DECLARE_EXIT extern void exit(int);
+#else
+# define OPENSSL_UNISTD_IO OPENSSL_UNISTD
+# define OPENSSL_DECLARE_EXIT /* declared in unistd.h */
+#endif
+
 /* Definitions of OPENSSL_GLOBAL and OPENSSL_EXTERN,
    to define and declare certain global
    symbols that, with some compilers under VMS, have to be defined and
-- 
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