update copyright

[gnulib.git] / m4 / sleep.m4

diff --git a/m4/sleep.m4 b/m4/sleep.m4
index c59b383..7e736d4 100644 (file)
--- a/m4/sleep.m4
+++ b/m4/sleep.m4
@@ -1,5 +1,5 @@
-# sleep.m4 serial 3
-dnl Copyright (C) 2007-2009 Free Software Foundation, Inc.
+# sleep.m4 serial 6
+dnl Copyright (C) 2007-2012 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.
@@ -12,11 +12,10 @@ AC_DEFUN([gl_FUNC_SLEEP],
   dnl _sleep() in MSVCRT. It has a different signature than POSIX sleep():
   dnl it takes the number of milliseconds as argument and returns void.
   dnl mingw does not declare this function.
-  AC_CHECK_DECLS([sleep], , , [#include <unistd.h>])
+  AC_CHECK_DECLS([sleep], , , [[#include <unistd.h>]])
   AC_CHECK_FUNCS_ONCE([sleep])
   if test $ac_cv_have_decl_sleep != yes; then
     HAVE_SLEEP=0
-    AC_LIBOBJ([sleep])
   else
     dnl Cygwin 1.5.x has a bug where sleep can't exceed 49.7 days.
     AC_CACHE_CHECK([for working sleep], [gl_cv_func_sleep_works],
@@ -38,12 +37,16 @@ handle_alarm (int sig)
     signal (SIGALRM, handle_alarm);
     alarm (1);
     remaining = sleep (pentecost);
-    return !(pentecost - 10 < remaining && remaining <= pentecost);]])],
+    if (remaining > pentecost)
+      return 3;
+    if (remaining <= pentecost - 10)
+      return 4;
+    return 0;
+    ]])],
       [gl_cv_func_sleep_works=yes], [gl_cv_func_sleep_works=no],
       [gl_cv_func_sleep_works="guessing no"])])
     if test "$gl_cv_func_sleep_works" != yes; then
       REPLACE_SLEEP=1
-      AC_LIBOBJ([sleep])
     fi
   fi
 ])