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Annotation of embedaddon/libiconv/srcm4/00gnulib.m4, revision 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])