(null) #+ˆl–Ým_JJn-jy@·q·. bÑ¿Í „„'ÝÃÊ?÷+divert(-1)# -*- Autoconf -*- # This file is part of Autoconf. # Base M4 layer. # Requires GNU M4. # # Copyright (C) 1999-2017 Free Software Foundation, Inc. # This file is part of Autoconf. This program is free # software; you can redistribute it and/or modify it under the # terms of the GNU General Public License as published by the # Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # Under Section 7 of GPL version 3, you are granted additional # permissions described in the Autoconf Configure Script Exception, # version 3.0, as published by the Free Software Foundation. # # You should have received a copy of the GNU General Public License # and a copy of the Autoconf Configure Script Exception along with # this program; see the files COPYINGv3 and COPYING.EXCEPTION # respectively. If not, see . # Written by Akim Demaille. # Set the quotes, whatever the current quoting system. changequote() changequote([, ]) # Some old m4's don't support m4exit. But they provide # equivalent functionality by core dumping because of the # long macros we define. ifdef([__gnu__], , [errprint(M4sugar requires GNU M4. Install it before installing M4sugar or set the M4 environment variable to its absolute file name.) m4exit(2)]) ## ------------------------------- ## ## 1. Simulate --prefix-builtins. ## ## ------------------------------- ## # m4_define # m4_defn # m4_undefine define([m4_define], defn([define])) define([m4_defn], defn([defn])) define([m4_undefine], defn([undefine])) m4_undefine([define]) m4_undefine([defn]) m4_undefine([undefine]) # m4_copy(SRC, DST) # ----------------- # Define DST as the definition of SRC. # What's the difference between: # 1. m4_copy([from], [to]) # 2. m4_define([to], [from($@)]) # Well, obviously 1 is more expensive in space. Maybe 2 is more expensive # in time, but because of the space cost of 1, it's not that obvious. # Nevertheless, one huge difference is the handling of `$0'. If `from' # uses `$0', then with 1, `to''s `$0' is `to', while it is `from' in 2. # The user would certainly prefer to see `to'. # # This definition is in effect during m4sugar initialization, when # there are no pushdef stacks; later on, we redefine it to something # more powerful for all other clients to use. m4_define([m4_copy], [m4_define([$2], m4_defn([$1]))]) # m4_rename(SRC, DST) # ------------------- # Rename the macro SRC to DST. m4_define([m4_rename], [m4_copy([$1], [$2])m4_undefine([$1])]) # m4_rename_m4(MACRO-NAME) # ------------------------ # Rename MACRO-NAME to m4_MACRO-NAME. m4_define([m4_rename_m4], [m4_rename([$1], [m4_$1])]) # m4_copy_unm4(m4_MACRO-NAME) # --------------------------- # Copy m4_MACRO-NAME to MACRO-NAME. m4_define([m4_copy_unm4], [m4_copy([$1], m4_bpatsubst([$1], [^m4_\(.*\)], [[\1]]))]) # Some m4 internals have names colliding with tokens we might use. # Rename them a` la `m4 --prefix-builtins'. Conditionals first, since # some subsequent renames are conditional. m4_rename_m4([ifdef]) m4_rename([ifelse], [m4_if]) m4_rename_m4([builtin]) m4_rename_m4([changecom]) m4_rename_m4([changequote]) m4_ifdef([changeword],dnl conditionally available in 1.4.x [m4_undefine([changeword])]) m4_rename_m4([debugfile]) m4_rename_m4([debugmode]) m4_rename_m4([decr]) m4_rename_m4([divnum]) m4_rename_m4([dumpdef]) m4_rename_m4([errprint]) m4_rename_m4([esyscmd]) m4_rename_m4([eval]) m4_rename_m4([format]) m4_undefine([include]) m4_rename_m4([incr]) m4_rename_m4([index]) m4_rename_m4([indir]) m4_rename_m4([len]) m4_rename([m4exit], [m4_exit]) m4_undefine([m4wrap]) m4_ifdef([mkstemp],dnl added in M4 1.4.8 [m4_rename_m4([mkstemp]) m4_copy([m4_mkstemp], [m4_make