From ae494d4be80df2aff50a2ac46fdc0c23de109ea3 Mon Sep 17 00:00:00 2001
From: Giuseppe Scrivano <gscrivano@gnu.org>
Date: Tue, 2 Jun 2009 08:28:23 +0200
Subject: tail: use inotify if it is available

* NEWS: Document the new feature.
* m4/jm-macros.m4: Check if inotify is present.
* src/tail.c (tail_forever_inotify): New function.
(main): Use the inotify-based function, if possible.
* tests/Makefile.am: Add new tests for tail.
* tests/test-lib.sh (require_proc_pid_status_, get_process_status_):
New functions.
* tests/tail-2/pid: New file.
* tests/tail-2/wait: New file.
* tests/tail-2/tail-n0f: Refactor code into the test-lib.sh
require_proc_pid_status_ function.
---
 m4/jm-macros.m4 | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'm4')

diff --git a/m4/jm-macros.m4 b/m4/jm-macros.m4
index 90c55bfd9..f14d6a382 100644
--- a/m4/jm-macros.m4
+++ b/m4/jm-macros.m4
@@ -52,6 +52,11 @@ AC_DEFUN([coreutils_MACROS],
   # Used by sort.c.
   AC_CHECK_FUNCS_ONCE([nl_langinfo])
 
+  # Used by tail.c.
+  AC_CHECK_FUNCS([inotify_init],
+    [AC_DEFINE([HAVE_INOTIFY], [1],
+     [Define to 1 if you have usable inotify support.])])
+
   AC_CHECK_FUNCS_ONCE( \
     endgrent \
     endpwent \
-- 
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