Annotation of embedaddon/libiconv/srcm4/00gnulib.m4, revision 1.1.1.1
1.1 misho 1: # 00gnulib.m4 serial 2
2: dnl Copyright (C) 2009 Free Software Foundation, Inc.
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])
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