--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2011-05-22  Bruno Haible  <bruno@clisp.org>
+
+	usleep: Move AC_LIBOBJ invocations to module description.
+	* m4/usleep.m4 (gl_FUNC_USLEEP): Move AC_LIBOBJ invocations from
+	here...
+	* modules/usleep (configure.ac): ... to here.
+
 2011-05-22  Bruno Haible  <bruno@clisp.org>
 
 	unlockpt: Move AC_LIBOBJ invocations to module description.

--- a/m4/usleep.m4
+++ b/m4/usleep.m4
@@ -1,4 +1,4 @@
-# usleep.m4 serial 1
+# usleep.m4 serial 2
 dnl Copyright (C) 2009-2011 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -18,7 +18,6 @@
       type if <sys/types.h> lacks this type.])])
   if test $ac_cv_func_usleep = no; then
     HAVE_USLEEP=0
-    AC_LIBOBJ([usleep])
   else
     dnl POSIX allows implementations to reject arguments larger than
     dnl 999999, but GNU guarantees it will work.
@@ -31,7 +30,6 @@
         [gl_cv_func_usleep_works="guessing no"])])
     if test "$gl_cv_func_usleep_works" != yes; then
       REPLACE_USLEEP=1
-      AC_LIBOBJ([usleep])
     fi
   fi
 ])

--- a/modules/usleep
+++ b/modules/usleep
@@ -12,6 +12,9 @@
 
 configure.ac:
 gl_FUNC_USLEEP
+if test $HAVE_USLEEP = 0 || test $REPLACE_USLEEP = 1; then
+  AC_LIBOBJ([usleep])
+fi
 gl_UNISTD_MODULE_INDICATOR([usleep])
 
 Makefile.am: