Added feature test macros to SYNOPSIS.

diff --git a/man2/wait4.2 b/man2/wait4.2
index 7cedb797bd11e4c1fee1c7bc300fa1054feeb2ee..5014914818789e34360c3d5fbf60d898400a097e 100644 (file)
--- a/man2/wait4.2
+++ b/man2/wait4.2
@@ -36,6 +36,8 @@
 wait3, wait4 \- wait for process to change state, BSD style
 .SH SYNOPSIS
 .nf
+.B #define _BSD_SOURCE          
+                /* Or #define _XOPEN_SOURCE 500 for wait3() */
 .B #include <sys/types.h>
 .B #include <sys/time.h>
 .B #include <sys/resource.h>
@@ -124,10 +126,6 @@ structure with fields of type
 .I struct timeval
 defined in
 .IR <sys/time.h> .)
-.LP
-The prototype for these functions is only available if
-.B _BSD_SOURCE
-is defined.
 .SH "CONFORMING TO"
 4.3BSD
 .SH "SEE ALSO"