[HAVE_UNISTD_H]: Include unistd.h.

diff --git a/src/sysdep.c b/src/sysdep.c
index 177f083d197319eaf112ead3cd166c041b13a4b9..f73562efd5ad0f8ebc1ad4be4ac63092210de372 100644 (file)
--- a/src/sysdep.c
+++ b/src/sysdep.c
@@ -75,6 +75,11 @@ extern int h_errno;
 #include <sys/stat.h>
 #include <errno.h>
 
+/* Get _POSIX_VDISABLE, if it is available.  */
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
 #ifdef MSDOS   /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
 #include <dos.h>
 #include "dosfns.h"