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f434ba03 | 1 | # 00gnulib.m4 serial 2 |
7b6bb8da | 2 | dnl Copyright (C) 2009-2011 Free Software Foundation, Inc. |
f434ba03 PA |
3 | dnl This file is free software; the Free Software Foundation |
4 | dnl gives unlimited permission to copy and/or distribute it, | |
5 | dnl with or without modifications, as long as this notice is preserved. | |
6 | ||
7 | dnl This file must be named something that sorts before all other | |
8 | dnl gnulib-provided .m4 files. It is needed until such time as we can | |
9 | dnl assume Autoconf 2.64, with its improved AC_DEFUN_ONCE semantics. | |
10 | ||
11 | # AC_DEFUN_ONCE([NAME], VALUE) | |
12 | # ---------------------------- | |
13 | # Define NAME to expand to VALUE on the first use (whether by direct | |
14 | # expansion, or by AC_REQUIRE), and to nothing on all subsequent uses. | |
15 | # Avoid bugs in AC_REQUIRE in Autoconf 2.63 and earlier. This | |
16 | # definition is slower than the version in Autoconf 2.64, because it | |
17 | # can only use interfaces that existed since 2.59; but it achieves the | |
18 | # same effect. Quoting is necessary to avoid confusing Automake. | |
19 | m4_version_prereq([2.63.263], [], | |
20 | [m4_define([AC][_DEFUN_ONCE], | |
21 | [AC][_DEFUN([$1], | |
22 | [AC_REQUIRE([_gl_DEFUN_ONCE([$1])], | |
23 | [m4_indir([_gl_DEFUN_ONCE([$1])])])])]dnl | |
24 | [AC][_DEFUN([_gl_DEFUN_ONCE([$1])], [$2])])]) | |
25 | ||
26 | # gl_00GNULIB | |
27 | # ----------- | |
28 | # Witness macro that this file has been included. Needed to force | |
29 | # Automake to include this file prior to all other gnulib .m4 files. | |
30 | AC_DEFUN([gl_00GNULIB]) |