31 lines
1.3 KiB
Text
31 lines
1.3 KiB
Text
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# 00gnulib.m4 serial 2
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dnl Copyright (C) 2009-2010 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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dnl This file must be named something that sorts before all other
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dnl gnulib-provided .m4 files. It is needed until such time as we can
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dnl assume Autoconf 2.64, with its improved AC_DEFUN_ONCE semantics.
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# AC_DEFUN_ONCE([NAME], VALUE)
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# ----------------------------
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# Define NAME to expand to VALUE on the first use (whether by direct
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# expansion, or by AC_REQUIRE), and to nothing on all subsequent uses.
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# Avoid bugs in AC_REQUIRE in Autoconf 2.63 and earlier. This
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# definition is slower than the version in Autoconf 2.64, because it
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# can only use interfaces that existed since 2.59; but it achieves the
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# same effect. Quoting is necessary to avoid confusing Automake.
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m4_version_prereq([2.63.263], [],
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[m4_define([AC][_DEFUN_ONCE],
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[AC][_DEFUN([$1],
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[AC_REQUIRE([_gl_DEFUN_ONCE([$1])],
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[m4_indir([_gl_DEFUN_ONCE([$1])])])])]dnl
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[AC][_DEFUN([_gl_DEFUN_ONCE([$1])], [$2])])])
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# gl_00GNULIB
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# -----------
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# Witness macro that this file has been included. Needed to force
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# Automake to include this file prior to all other gnulib .m4 files.
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AC_DEFUN([gl_00GNULIB])
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