SPDX-FileCopyrightText: 2021 Samuel Tyler <samuel@samuelt.me>

SPDX-License-Identifier: GPL-2.0-or-later

This macro does not exist in newer versions of autoconf and is unrequired.
There is no version of autoconf supporting this project + gnulib + this macro.

--- bison-2.3/m4/po_gl.m4	2021-04-11 18:39:53.353069610 +1000
+++ bison-2.3/m4/po_gl.m4	2021-04-11 18:40:20.422242498 +1000
@@ -24,7 +24,6 @@
 [
   AC_REQUIRE([AC_PROG_MAKE_SET])dnl
   AC_REQUIRE([AC_PROG_INSTALL])dnl
-  AC_REQUIRE([AM_MKINSTALLDIRS])dnl
   AC_REQUIRE([AM_NLS])dnl
 
   dnl Perform the following tests also if --disable-nls has been given,
