lib/autoconf/autoconf.m4

   1 # This file is part of Autoconf.                -*- Autoconf -*-
   2 # Driver that loads the Autoconf macro files.
   3 #
   4 # Copyright (C) 1994, 1999-2002, 2006, 2008-2017, 2020-2022 Free
   5 # Software Foundation, Inc.
   6
   7 # This file is part of Autoconf.  This program is free
   8 # software; you can redistribute it and/or modify it under the
   9 # terms of the GNU General Public License as published by the
  10 # Free Software Foundation, either version 3 of the License, or
  11 # (at your option) any later version.
  12 #
  13 # This program is distributed in the hope that it will be useful,
  14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 # GNU General Public License for more details.
  17 #
  18 # Under Section 7 of GPL version 3, you are granted additional
  19 # permissions described in the Autoconf Configure Script Exception,
  20 # version 3.0, as published by the Free Software Foundation.
  21 #
  22 # You should have received a copy of the GNU General Public License
  23 # and a copy of the Autoconf Configure Script Exception along with
  24 # this program; see the files COPYINGv3 and COPYING.EXCEPTION
  25 # respectively.  If not, see <https://www.gnu.org/licenses/>.
  26
  27 # Written by David MacKenzie and many others.
  28 #
  29 # Do not sinclude acsite.m4 here, because it may not be installed
  30 # yet when Autoconf is frozen.
  31 # Do not sinclude ./aclocal.m4 here, to prevent it from being frozen.
  32
  33 # general includes some AU_DEFUN.
  34 m4_include([autoconf/autoupdate.m4])
  35 m4_include([autoconf/autoscan.m4])
  36 m4_include([autoconf/general.m4])
  37 m4_include([autoconf/status.m4])
  38 m4_include([autoconf/autoheader.m4])
  39 m4_include([autoconf/autotest.m4])
  40 m4_include([autoconf/programs.m4])
  41 m4_include([autoconf/lang.m4])
  42 m4_include([autoconf/c.m4])
  43 m4_include([autoconf/erlang.m4])
  44 m4_include([autoconf/fortran.m4])
  45 m4_include([autoconf/go.m4])
  46 m4_include([autoconf/functions.m4])
  47 m4_include([autoconf/headers.m4])
  48 m4_include([autoconf/types.m4])
  49 m4_include([autoconf/libs.m4])
  50 m4_include([autoconf/specific.m4])
  51 m4_include([autoconf/oldnames.m4])
  52
  53 # We discourage the use of the non prefixed macro names: M4sugar maps
  54 # all the builtins into 'm4_'.  Autoconf has been converted to these
  55 # names too.  But users may still depend upon these, so reestablish
  56 # them.
  57
  58 # In order to copy pushdef stacks, m4_copy temporarily destroys the
  59 # current pushdef stack.  But these builtins are so primitive that:
  60 #   1. they should not have more than one pushdef definition
  61 #   2. undefining the pushdef stack to copy breaks m4_copy
  62 # Hence, we temporarily restore a simpler m4_copy.
  63
  64 m4_pushdef([m4_copy], [m4_define([$2], m4_defn([$1]))])
  65
  66 m4_copy_unm4([m4_builtin])
  67 m4_copy_unm4([m4_changequote])
  68 m4_copy_unm4([m4_decr])
  69 m4_copy_unm4([m4_define])
  70 m4_copy_unm4([m4_defn])
  71 m4_copy_unm4([m4_divert])
  72 m4_copy_unm4([m4_divnum])
  73 m4_copy_unm4([m4_errprint])
  74 m4_copy_unm4([m4_esyscmd])
  75 m4_copy_unm4([m4_ifdef])
  76 m4_copy([m4_if], [ifelse])
  77 m4_copy_unm4([m4_incr])
  78 m4_copy_unm4([m4_index])
  79 m4_copy_unm4([m4_indir])
  80 m4_copy_unm4([m4_len])
  81 m4_copy([m4_bpatsubst], [patsubst])
  82 m4_copy_unm4([m4_popdef])
  83 m4_copy_unm4([m4_pushdef])
  84 m4_copy([m4_bregexp], [regexp])
  85 m4_copy_unm4([m4_sinclude])
  86 m4_copy_unm4([m4_syscmd])
  87 m4_copy_unm4([m4_sysval])
  88 m4_copy_unm4([m4_traceoff])
  89 m4_copy_unm4([m4_traceon])
  90 m4_copy_unm4([m4_translit])
  91 m4_copy_unm4([m4_undefine])
  92 m4_copy_unm4([m4_undivert])
  93
  94 m4_popdef([m4_copy])
  95
  96 # Yet some people have started to use m4_patsubst and m4_regexp.
  97 m4_define([m4_patsubst],
  98 [m4_expand_once([m4_warn([syntax],
  99                  [do not use m4_patsubst: use patsubst or m4_bpatsubst])])dnl
 100 patsubst($@)])
 101
 102 m4_define([m4_regexp],
 103 [m4_expand_once([m4_warn([syntax],
 104                  [do not use m4_regexp: use regexp or m4_bregexp])])dnl
 105 regexp($@)])