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diff --git a/m4/prereq.m4 b/m4/prereq.m4
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+#serial 73
+
+dnl We use gl_ for non Autoconf macros.
+m4_pattern_forbid([^gl_[ABCDEFGHIJKLMNOPQRSTUVXYZ]])dnl
+
+# These are the prerequisite macros for files in the lib/
+# directory of the coreutils package.
+
+
+# Copyright (C) 1998, 2000, 2001, 2003, 2004, 2005, 2006 Free Software
+# Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software Foundation,
+# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+
+# Written by Jim Meyering.
+
+
+AC_DEFUN([gl_PREREQ],
+[
+  # gnulib settings.
+  AC_REQUIRE([gl_FUNC_NONREENTRANT_EUIDACCESS])
+
+  # We don't use c-stack.c.
+  # AC_REQUIRE([gl_C_STACK])
+
+  # Invoke macros of modules that may migrate into gnulib.
+  # There's no need to list gnulib modules here, since gnulib-tool
+  # handles that; see ../bootstrap.conf.
+  AC_REQUIRE([gl_EUIDACCESS_STAT])
+  AC_REQUIRE([gl_FD_REOPEN])
+  AC_REQUIRE([gl_FUNC_XFTS])
+  AC_REQUIRE([gl_MEMXFRM])
+  AC_REQUIRE([gl_RANDINT])
+  AC_REQUIRE([gl_RANDPERM])
+  AC_REQUIRE([gl_RANDREAD])
+  AC_REQUIRE([gl_ROOT_DEV_INO])
+  AC_REQUIRE([gl_SHA256])
+  AC_REQUIRE([gl_SHA512])
+  AC_REQUIRE([gl_STRINTCMP])
+  AC_REQUIRE([gl_STRNUMCMP])
+])