Ensure pid_t gets defined.

[gnulib.git] / m4 / time_h.m4

diff --git a/m4/time_h.m4 b/m4/time_h.m4
index 615da1c..6e6394f 100644 (file)
--- a/m4/time_h.m4
+++ b/m4/time_h.m4
@@ -2,7 +2,7 @@
 
 # Copyright (C) 2000-2001, 2003-2007, 2009-2011 Free Software Foundation, Inc.
 
-# serial 4
+# serial 5
 
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -23,6 +23,9 @@ AC_DEFUN([gl_HEADER_TIME_H_BODY],
   AC_REQUIRE([gl_HEADER_TIME_H_DEFAULTS])
   gl_NEXT_HEADERS([time.h])
   AC_REQUIRE([gl_CHECK_TYPE_STRUCT_TIMESPEC])
+
+  dnl Ensure the type pid_t gets defined.
+  AC_REQUIRE([AC_TYPE_PID_T])
 ])
 
 dnl Define HAVE_STRUCT_TIMESPEC if `struct timespec' is declared