pipe: Set errno upon failure.

[gnulib.git] / m4 / sys_wait_h.m4

diff --git a/m4/sys_wait_h.m4 b/m4/sys_wait_h.m4
index a161ff7..8417420 100644 (file)
--- a/m4/sys_wait_h.m4
+++ b/m4/sys_wait_h.m4
@@ -1,5 +1,5 @@
-# sys_wait_h.m4 serial 2
-dnl Copyright (C) 2008, 2009, 2010 Free Software Foundation, Inc.
+# sys_wait_h.m4 serial 3
+dnl Copyright (C) 2008-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -8,6 +8,7 @@ AC_DEFUN([gl_SYS_WAIT_H],
 [
   AC_REQUIRE([gl_SYS_WAIT_H_DEFAULTS])
 
+  dnl <sys/wait.h> is always overridden, because of GNULIB_POSIXCHECK.
   gl_CHECK_NEXT_HEADERS([sys/wait.h])
 ])