define _OSF_SOURCE when compiling under OSFx.y (x `elem` [1,3])
# define NON_POSIX_SOURCE
#endif
# define NON_POSIX_SOURCE
#endif
-#if defined(osf1_TARGET_OS)
+#if defined(osf3_TARGET_OS) || defined(osf1_TARGET_OS)
/* The include files for OSF1 do not normally define SA_SIGINFO */
# define _OSF_SOURCE 1
#endif
/* The include files for OSF1 do not normally define SA_SIGINFO */
# define _OSF_SOURCE 1
#endif