* sigaction and fileno included. -pedantic would be more appropriate for
* the intended purposes, but we can't prevent users from adding -ansi.
*/
-#ifndef _POSIX_C_SOURCE
+#if !defined(_POSIX_C_SOURCE) && defined(OPENSSL_SYS_VMS)
#define _POSIX_C_SOURCE 2
#endif
#include <signal.h>