maint: update copyright

[gnulib.git] / m4 / backupfile.m4

diff --git a/m4/backupfile.m4 b/m4/backupfile.m4
index 0f63f4e..6924944 100644 (file)
--- a/m4/backupfile.m4
+++ b/m4/backupfile.m4
@@ -1,23 +1,13 @@
-# backupfile.m4 serial 1
-dnl Copyright (C) 2002 Free Software Foundation, Inc.
-dnl This file is free software, distributed under the terms of the GNU
-dnl General Public License.  As a special exception to the GNU General
-dnl Public License, this file may be distributed as part of a program
-dnl that contains a configuration script generated by Autoconf, under
-dnl the same distribution terms as the rest of that program.
+# backupfile.m4 serial 14
+dnl Copyright (C) 2002-2006, 2009-2014 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.
 
+dnl Prerequisites of lib/backupfile.c.
 AC_DEFUN([gl_BACKUPFILE],
 [
-  dnl Prerequisites of lib/backupfile.c.
-  AC_REQUIRE([AC_HEADER_DIRENT])
-  AC_REQUIRE([AC_FUNC_CLOSEDIR_VOID])
-  AC_CHECK_HEADERS_ONCE(limits.h stdlib.h string.h)
-  AC_CHECK_DECLS_ONCE(getenv malloc)
-  jm_CHECK_TYPE_STRUCT_DIRENT_D_INO
-
-  dnl Prerequisites of lib/addext.c.
-  AC_REQUIRE([jm_AC_DOS])
-  AC_SYS_LONG_FILE_NAMES
-  AC_CHECK_HEADERS_ONCE(limits.h string.h unistd.h)
-  AC_CHECK_FUNCS(pathconf)
+  AC_REQUIRE([gl_CHECK_TYPE_STRUCT_DIRENT_D_INO])
+  AC_REQUIRE([AC_SYS_LONG_FILE_NAMES])
+  AC_CHECK_FUNCS_ONCE([pathconf])
 ])