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- # 00gnulib.m4 serial 2
- dnl Copyright (C) 2009 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 This file must be named something that sorts before all other
- dnl gnulib-provided .m4 files. It is needed until such time as we can
- dnl assume Autoconf 2.64, with its improved AC_DEFUN_ONCE semantics.
- # AC_DEFUN_ONCE([NAME], VALUE)
- # ----------------------------
- # Define NAME to expand to VALUE on the first use (whether by direct
- # expansion, or by AC_REQUIRE), and to nothing on all subsequent uses.
- # Avoid bugs in AC_REQUIRE in Autoconf 2.63 and earlier. This
- # definition is slower than the version in Autoconf 2.64, because it
- # can only use interfaces that existed since 2.59; but it achieves the
- # same effect. Quoting is necessary to avoid confusing Automake.
- m4_version_prereq([2.63.263], [],
- [m4_define([AC][_DEFUN_ONCE],
- [AC][_DEFUN([$1],
- [AC_REQUIRE([_gl_DEFUN_ONCE([$1])],
- [m4_indir([_gl_DEFUN_ONCE([$1])])])])]dnl
- [AC][_DEFUN([_gl_DEFUN_ONCE([$1])], [$2])])])
- # gl_00GNULIB
- # -----------
- # Witness macro that this file has been included. Needed to force
- # Automake to include this file prior to all other gnulib .m4 files.
- AC_DEFUN([gl_00GNULIB])
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