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kc3-lang/automake/lib/Automake/Options.pm

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  • Author : Alexandre Duret-Lutz
    Date : 2005-05-14 20:28:56
    Hash : 1183efd3
    Message : * COPYING, ChangeLog, ChangeLog.00, ChangeLog.01, ChangeLog.02, ChangeLog.03, ChangeLog.96, ChangeLog.98, HACKING, Makefile.am, NEWS, README, TODO, aclocal.in, automake.in, bootstrap, configure, configure.ac, doc/Makefile.am, doc/fdl.texi, lib/COPYING, lib/Makefile.am, lib/acinstall, lib/compile, lib/config-ml.in, lib/config.guess, lib/config.sub, lib/depcomp, lib/elisp-comp, lib/gnupload, lib/mdate-sh, lib/missing, lib/py-compile, lib/symlink-tree, lib/texinfo.tex, lib/ylwrap, lib/Automake/ChannelDefs.pm, lib/Automake/Channels.pm, lib/Automake/Condition.pm, lib/Automake/Config.in, lib/Automake/Configure_ac.pm, lib/Automake/DisjConditions.pm, lib/Automake/FileUtils.pm, lib/Automake/General.pm, lib/Automake/Item.pm, lib/Automake/ItemDef.pm, lib/Automake/Location.pm, lib/Automake/Makefile.am, lib/Automake/Options.pm, lib/Automake/Rule.pm, lib/Automake/RuleDef.pm, lib/Automake/Struct.pm, lib/Automake/VarDef.pm, lib/Automake/Variable.pm, lib/Automake/Version.pm, lib/Automake/Wrap.pm, lib/Automake/XFile.pm, lib/Automake/tests/Condition.pl, lib/Automake/tests/DisjConditions.pl, lib/Automake/tests/Makefile.am, lib/Automake/tests/Version.pl, lib/Automake/tests/Wrap.pl, lib/am/Makefile.am, lib/am/ansi2knr.am, lib/am/check.am, lib/am/clean-hdr.am, lib/am/clean.am, lib/am/compile.am, lib/am/configure.am, lib/am/data.am, lib/am/dejagnu.am, lib/am/depend.am, lib/am/depend2.am, lib/am/distdir.am, lib/am/footer.am, lib/am/header-vars.am, lib/am/header.am, lib/am/inst-vars.am, lib/am/install.am, lib/am/java.am, lib/am/lang-compile.am, lib/am/lex.am, lib/am/library.am, lib/am/libs.am, lib/am/libtool.am, lib/am/lisp.am, lib/am/ltlib.am, lib/am/ltlibrary.am, lib/am/mans-vars.am, lib/am/mans.am, lib/am/multilib.am, lib/am/program.am, lib/am/progs.am, lib/am/python.am, lib/am/remake-hdr.am, lib/am/scripts.am, lib/am/subdirs.am, lib/am/tags.am, lib/am/texi-vers.am, lib/am/texibuild.am, lib/am/texinfos.am, lib/am/yacc.am, m4/Makefile.am, tests/aclibobj.test, tests/acloca10.test, tests/acloca11.test, tests/acloca12.test, tests/acloca13.test, tests/acloca14.test, tests/acloca15.test, tests/acloca16.test, tests/acloca17.test, tests/acloca18.test, tests/acloca19.test, tests/aclocal.test, tests/aclocal3.test, tests/aclocal4.test, tests/aclocal5.test, tests/aclocal6.test, tests/aclocal7.test, tests/aclocal8.test, tests/aclocal9.test, tests/acoutbs.test, tests/acoutbs2.test, tests/acoutnoq.test, tests/acoutpt.test, tests/acoutpt2.test, tests/acoutqnl.test, tests/acsilent.test, tests/acsubst.test, tests/acsubst2.test, tests/all.test, tests/alloca.test, tests/alloca2.test, tests/alpha.test, tests/alpha2.test, tests/amassign.test, tests/ammissing.test, tests/ansi.test, tests/ansi10.test, tests/ansi2.test, tests/ansi3.test, tests/ansi3b.test, tests/ansi4.test, tests/ansi5.test, tests/ansi6.test, tests/ansi7.test, tests/ansi8.test, tests/ansi9.test, tests/ar.test, tests/ar2.test, tests/asm.test, tests/autohdr.test, tests/autohdr2.test, tests/autohdr3.test, tests/autohdr4.test, tests/automake.test, tests/auxdir.test, tests/auxdir2.test, tests/auxdir3.test, tests/auxdir4.test, tests/backsl.test, tests/backsl2.test, tests/backsl3.test, tests/backsl4.test, tests/badline.test, tests/badopt.test, tests/badprog.test, tests/block.test, tests/bsource.test, tests/canon.test, tests/canon2.test, tests/canon3.test, tests/canon4.test, tests/canon5.test, tests/ccnoco.test, tests/check.test, tests/check2.test, tests/check3.test, tests/check4.test, tests/checkall.test, tests/clean.test, tests/clean2.test, tests/colneq.test, tests/colneq2.test, tests/colon.test, tests/colon2.test, tests/colon3.test, tests/colon4.test, tests/colon5.test, tests/colon6.test, tests/colon7.test, tests/comment.test, tests/comment2.test, tests/comment3.test, tests/comment4.test, tests/comment5.test, tests/comment6.test, tests/comment7.test, tests/comment8.test, tests/comment9.test, tests/compile.test, tests/compile_f90_c_cxx.test, tests/compile_f_c_cxx.test, tests/cond.test, tests/cond10.test, tests/cond11.test, tests/cond13.test, tests/cond14.test, tests/cond15.test, tests/cond16.test, tests/cond17.test, tests/cond18.test, tests/cond19.test, tests/cond2.test, tests/cond20.test, tests/cond21.test, tests/cond22.test, tests/cond23.test, tests/cond24.test, tests/cond25.test, tests/cond26.test, tests/cond27.test, tests/cond28.test, tests/cond29.test, tests/cond3.test, tests/cond30.test, tests/cond31.test, tests/cond32.test, tests/cond33.test, tests/cond34.test, tests/cond35.test, tests/cond36.test, tests/cond37.test, tests/cond4.test, tests/cond5.test, tests/cond6.test, tests/cond7.test, tests/cond8.test, tests/cond9.test, tests/condd.test, tests/condhook.test, tests/condinc.test, tests/condinc2.test, tests/condlib.test, tests/condman.test, tests/condman2.test, tests/conf2.test, tests/confdeps.test, tests/conff.test, tests/conff2.test, tests/confh.test, tests/confh4.test, tests/confh5.test, tests/config.test, tests/confincl.test, tests/conflnk.test, tests/conflnk2.test, tests/conflnk3.test, tests/confsub.test, tests/confvar.test, tests/confvar2.test, tests/copy.test, tests/ctarget1.test, tests/cxx.test, tests/cxx2.test, tests/cxxansi.test, tests/cxxcpp.test, tests/cxxlibobj.test, tests/cxxlink.test, tests/cxxnoc.test, tests/cxxo.test, tests/cygwin32.test, tests/dash.test, tests/defs.in, tests/defun.test, tests/defun2.test, tests/dejagnu.test, tests/dejagnu2.test, tests/dejagnu3.test, tests/dejagnu4.test, tests/dejagnu5.test, tests/dejagnu6.test, tests/dejagnu7.test, tests/depacl2.test, tests/depcomp.test, tests/depcomp2.test, tests/depcomp3.test, tests/depcomp4.test, tests/depcomp5.test, tests/depdist.test, tests/depend.test, tests/depend2.test, tests/depend3.test, tests/depend4.test, tests/destdir.test, tests/dirforbid.test, tests/dirlist.test, tests/discover.test, tests/distcom2.test, tests/distcom3.test, tests/distcom4.test, tests/distcom5.test, tests/distcom6.test, tests/distcom7.test, tests/distdir.test, tests/distname.test, tests/dollar.test, tests/double.test, tests/dup2.test, tests/else.test, tests/empty.test, tests/empty2.test, tests/empty3.test, tests/empty4.test, tests/exdir.test, tests/exdir2.test, tests/exeext.test, tests/exeext2.test, tests/exeext3.test, tests/exeext4.test, tests/exsource.test, tests/ext.test, tests/ext2.test, tests/extra.test, tests/extra2.test, tests/extra3.test, tests/extra4.test, tests/extra5.test, tests/extra6.test, tests/extra7.test, tests/f90only.test, tests/flibs.test, tests/fn99.test, tests/fnoc.test, tests/fo.test, tests/fonly.test, tests/fortdep.test, tests/fpinst2.test, tests/fpinstall.test, tests/gcj.test, tests/gcj2.test, tests/gcj3.test, tests/gcj4.test, tests/gcj5.test, tests/getopt.test, tests/gettext.test, tests/gettext2.test, tests/gnits.test, tests/gnits2.test, tests/gnits3.test, tests/gnumake.test, tests/gnuwarn.test, tests/gnuwarn2.test, tests/header.test, tests/help.test, tests/hfs.test, tests/hosts.test, tests/implicit.test, tests/include.test, tests/include2.test, tests/info.test, tests/insh2.test, tests/install2.test, tests/installdir.test, tests/instdat.test, tests/instdat2.test, tests/instexec.test, tests/insthook.test, tests/instman.test, tests/instman2.test, tests/instsh.test, tests/instsh2.test, tests/instspc.test, tests/interp.test, tests/interp2.test, tests/java.test, tests/java2.test, tests/java3.test, tests/javaprim.test, tests/javasubst.test, tests/ldadd.test, tests/ldflags.test, tests/lex.test, tests/lex2.test, tests/lex3.test, tests/lex4.test, tests/lex5.test, tests/libobj10.test, tests/libobj11.test, tests/libobj12.test, tests/libobj13.test, tests/libobj14.test, tests/libobj2.test, tests/libobj3.test, tests/libobj4.test, tests/libobj5.test, tests/libobj7.test, tests/libobj8.test, tests/library.test, tests/library2.test, tests/library3.test, tests/libtool.test, tests/libtool2.test, tests/libtool3.test, tests/libtool4.test, tests/libtool5.test, tests/libtool6.test, tests/libtool7.test, tests/libtool8.test, tests/libtool9.test, tests/license.test, tests/link_c_cxx.test, tests/link_dist.test, tests/link_f90_only.test, tests/link_f_only.test, tests/link_fc.test, tests/link_fccxx.test, tests/link_fcxx.test, tests/lisp2.test, tests/lisp3.test, tests/lisp4.test, tests/lisp5.test, tests/lisp6.test, tests/lisp7.test, tests/lisp8.test, tests/listval.test, tests/location.test, tests/longlin2.test, tests/longline.test, tests/ltcond.test, tests/ltcond2.test, tests/ltconv.test, tests/ltdeps.test, tests/ltlibobjs.test, tests/ltlibsrc.test, tests/maintclean.test, tests/make.test, tests/makej.test, tests/makevars.test, tests/man.test, tests/man2.test, tests/mclean.test, tests/mdate.test, tests/mdate2.test, tests/mdate3.test, tests/mdate4.test, tests/missing.test, tests/missing2.test, tests/missing3.test, tests/mkinst2.test, tests/mkinstall.test, tests/mmodely.test, tests/multlib.test, tests/nobase.test, tests/nodef.test, tests/nodef2.test, tests/nodep.test, tests/nodepcomp.test, tests/nodist.test, tests/nodist2.test, tests/nodist3.test, tests/nogzip.test, tests/nogzip2.test, tests/noinst.test, tests/noinstdir.test, tests/nolink.test, tests/nostdinc.test, tests/number.test, tests/obsolete.test, tests/order.test, tests/outdir.test, tests/output.test, tests/output10.test, tests/output11.test, tests/output12.test, tests/output2.test, tests/output3.test, tests/output4.test, tests/output5.test, tests/output6.test, tests/output7.test, tests/output8.test, tests/output9.test, tests/overrid.test, tests/parse.test, tests/percent.test, tests/percent2.test, tests/phony.test, tests/pluseq.test, tests/pluseq10.test, tests/pluseq2.test, tests/pluseq3.test, tests/pluseq4.test, tests/pluseq5.test, tests/pluseq6.test, tests/pluseq7.test, tests/pluseq8.test, tests/pluseq9.test, tests/postproc.test, tests/ppf77.test, tests/pr2.test, tests/pr204.test, tests/pr211.test, tests/pr220.test, tests/pr224.test, tests/pr229.test, tests/pr243.test, tests/pr266.test, tests/pr279-2.test, tests/pr279.test, tests/pr287.test, tests/pr300-lib.test, tests/pr300-ltlib.test, tests/pr300-prog.test, tests/pr307.test, tests/pr401.test, tests/pr401b.test, tests/pr401c.test, tests/pr72.test, tests/pr87.test, tests/pr9.test, tests/prefix.test, tests/primary.test, tests/primary2.test, tests/primary3.test, tests/proginst.test, tests/python.test, tests/python10.test, tests/python11.test, tests/python12.test, tests/python2.test, tests/python3.test, tests/python4.test, tests/python5.test, tests/python6.test, tests/python7.test, tests/python8.test, tests/python9.test, tests/recurs.test, tests/recurs2.test, tests/regex.test, tests/remake.test, tests/remake2.test, tests/remake3.test, tests/remake4.test, tests/remake5.test, tests/req.test, tests/reqd.test, tests/reqd2.test, tests/rulepat.test, tests/scripts.test, tests/seenc.test, tests/sinclude.test, tests/space.test, tests/specflg.test, tests/specflg2.test, tests/specflg3.test, tests/specflg6.test, tests/specflg7.test, tests/specflg8.test, tests/specflg9.test, tests/spell.test, tests/spell2.test, tests/spell3.test, tests/spelling.test, tests/spy.test, tests/srcsub.test, tests/srcsub2.test, tests/stamph2.test, tests/stdlib.test, tests/stdlib2.test, tests/strip.test, tests/subcond.test, tests/subcond2.test, tests/subcond3.test, tests/subdir.test, tests/subdir2.test, tests/subdir3.test, tests/subdir4.test, tests/subdir5.test, tests/subdir6.test, tests/subdir7.test, tests/subdir8.test, tests/subdir9.test, tests/subdirbuiltsources.test, tests/subobj.test, tests/subobj2.test, tests/subobj3.test, tests/subobj4.test, tests/subobj5.test, tests/subobj6.test, tests/subobj7.test, tests/subobj8.test, tests/subobj9.test, tests/subobjname.test, tests/subpkg.test, tests/subpkg2.test, tests/subst.test, tests/subst2.test, tests/substre2.test, tests/substref.test, tests/substtarg.test, tests/suffix.test, tests/suffix10.test, tests/suffix11.test, tests/suffix2.test, tests/suffix3.test, tests/suffix4.test, tests/suffix5.test, tests/suffix6.test, tests/suffix7.test, tests/suffix8.test, tests/suffix9.test, tests/symlink.test, tests/symlink2.test, tests/symlink3.test, tests/syntax.test, tests/tags.test, tests/tagsub.test, tests/tar.test, tests/tar2.test, tests/tar3.test, tests/target-cflags.test, tests/targetclash.test, tests/transform.test, tests/txinfo.test, tests/txinfo10.test, tests/txinfo13.test, tests/txinfo16.test, tests/txinfo17.test, tests/txinfo18.test, tests/txinfo19.test, tests/txinfo2.test, tests/txinfo20.test, tests/txinfo21.test, tests/txinfo22.test, tests/txinfo23.test, tests/txinfo24.test, tests/txinfo25.test, tests/txinfo26.test, tests/txinfo27.test, tests/txinfo28.test, tests/txinfo29.test, tests/txinfo3.test, tests/txinfo4.test, tests/txinfo5.test, tests/txinfo6.test, tests/txinfo7.test, tests/txinfo8.test, tests/txinfo9.test, tests/unused.test, tests/vars.test, tests/vars3.test, tests/vartar.test, tests/version.test, tests/version2.test, tests/version3.test, tests/version4.test, tests/version6.test, tests/version7.test, tests/version8.test, tests/vpath.test, tests/vtexi.test, tests/vtexi2.test, tests/warnopts.test, tests/werror.test, tests/werror2.test, tests/whoami.test, tests/xsource.test, tests/yacc.test, tests/yacc2.test, tests/yacc3.test, tests/yacc4.test, tests/yacc5.test, tests/yacc6.test, tests/yacc7.test, tests/yacc8.test, tests/yaccpp.test, tests/yaccvpath.test: Update FSF postal mail address.

  • lib/Automake/Options.pm
  • # Copyright (C) 2003, 2004  Free Software Foundation, Inc.
    
    # 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 2, 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.
    
    # You should have received a copy of the GNU General Public License
    # along with this program; if not, write to the Free Software
    # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
    # 02110-1301, USA.
    
    package Automake::Options;
    
    use strict;
    use Exporter;
    use Automake::Config;
    use Automake::ChannelDefs;
    use Automake::Channels;
    use Automake::Version;
    
    use vars qw (@ISA @EXPORT);
    
    @ISA = qw (Exporter);
    @EXPORT = qw (option global_option
    	      set_option set_global_option
    	      unset_option unset_global_option
    	      process_option_list process_global_option_list
    	      set_strictness $strictness $strictness_name
    	      &FOREIGN &GNU &GNITS);
    
    =head1 NAME
    
    Automake::Options - keep track of Automake options
    
    =head1 SYNOPSIS
    
      use Automake::Options;
    
      # Option lookup and setting.
      $opt = option 'name';
      $opt = global_option 'name';
      set_option 'name', 'value';
      set_global_option 'name', 'value';
      unset_option 'name';
      unset_global_option 'name';
    
      # Batch option setting.
      process_option_list $location, @names;
      process_global_option_list $location, @names;
    
      # Strictness lookup and setting.
      set_strictness 'foreign';
      set_strictness 'gnu';
      set_strictness 'gnits';
      if ($strictness >= GNU) { ... }
      print "$strictness_name\n";
    
    =head1 DESCRIPTION
    
    This packages manages Automake's options and strictness settings.
    Options can be either local or global.  Local options are set using an
    C<AUTOMAKE_OPTIONS> variable in a F<Makefile.am> and apply only to
    this F<Makefile.am>.  Global options are set from the command line or
    passed as an argument to C<AM_INIT_AUTOMAKE>, they apply to all
    F<Makefile.am>s.
    
    =cut
    
    # Values are the Automake::Location of the definition, except
    # for 'ansi2knr' whose value is a pair [filename, Location].
    use vars '%_options';		# From AUTOMAKE_OPTIONS
    use vars '%_global_options';	# from AM_INIT_AUTOMAKE or the command line.
    
    =head2 Constants
    
    =over 4
    
    =item FOREIGN
    
    =item GNU
    
    =item GNITS
    
    Strictness constants used as values for C<$strictness>.
    
    =back
    
    =cut
    
    # Constants to define the "strictness" level.
    use constant FOREIGN => 0;
    use constant GNU     => 1;
    use constant GNITS   => 2;
    
    =head2 Variables
    
    =over 4
    
    =item C<$strictness>
    
    The current stricness.  One of C<FOREIGN>, C<GNU>, or C<GNITS>.
    
    =item C<$strictness_name>
    
    The current stricness name.  One of C<'foreign'>, C<'gnu'>, or C<'gnits'>.
    
    =back
    
    =cut
    
    # Strictness levels.
    use vars qw ($strictness $strictness_name);
    
    # Strictness level as set on command line.
    use vars qw ($_default_strictness $_default_strictness_name);
    
    
    =head2 Functions
    
    =over 4
    
    =item C<Automake::Options::reset>
    
    Reset the options variables for the next F<Makefile.am>.
    
    In other words, this gets rid of all local options in use by the
    previous F<Makefile.am>.
    
    =cut
    
    sub reset ()
    {
      %_options = %_global_options;
      # The first time we are run,
      # remember the current setting as the default.
      if (defined $_default_strictness)
        {
          $strictness = $_default_strictness;
          $strictness_name = $_default_strictness_name;
        }
      else
        {
          $_default_strictness = $strictness;
          $_default_strictness_name = $strictness_name;
        }
    }
    
    =item C<$value = option ($name)>
    
    =item C<$value = global_option ($name)>
    
    Query the state of an option.  If the option is unset, this
    returns the empty list.  Otherwise it returns the option's value,
    as set by C<set_option> or C<set_global_option>.
    
    Not that C<global_option> should be used only when it is
    important to make sure an option hasn't been set locally.
    Otherwise C<option> should be the standard function to
    check for options (be they global or local).
    
    =cut
    
    sub option ($)
    {
      my ($name) = @_;
      return () unless defined $_options{$name};
      return $_options{$name};
    }
    
    sub global_option ($)
    {
      my ($name) = @_;
      return () unless defined $_global_options{$name};
      return $_global_options{$name};
    }
    
    =item C<set_option ($name, $value)>
    
    =item C<set_global_option ($name, $value)>
    
    Set an option.  By convention, C<$value> is usually the location
    of the option definition.
    
    =cut
    
    sub set_option ($$)
    {
      my ($name, $value) = @_;
      $_options{$name} = $value;
    }
    
    sub set_global_option ($$)
    {
      my ($name, $value) = @_;
      $_global_options{$name} = $value;
    }
    
    
    =item C<unset_option ($name)>
    
    =item C<unset_global_option ($name)>
    
    Unset an option.
    
    =cut
    
    sub unset_option ($)
    {
      my ($name) = @_;
      delete $_options{$name};
    }
    
    sub unset_global_option ($)
    {
      my ($name) = @_;
      delete $_global_options{$name};
    }
    
    
    =item C<process_option_list ($where, @options)>
    
    =item C<process_global_option_list ($where, @options)>
    
    Process Automake's option lists.  C<@options> should be a list of
    words, as they occur in C<AUTOMAKE_OPTIONS> or C<AM_INIT_AUTOMAKE>.
    
    Return 1 on error, 0 otherwise.
    
    =cut
    
    # $BOOL
    # _process_option_list (\%OPTIONS, $WHERE, @OPTIONS)
    # -------------------------------------------------
    # Process a list of options.  Return 1 on error, 0 otherwise.
    # \%OPTIONS is the hash to fill with options data, $WHERE is
    # the location where @OPTIONS occured.
    sub _process_option_list (\%$@)
    {
      my ($options, $where, @list) = @_;
    
      foreach (@list)
        {
          $options->{$_} = $where;
          if ($_ eq 'gnits' || $_ eq 'gnu' || $_ eq 'foreign')
    	{
    	  set_strictness ($_);
    	}
          elsif (/^(.*\/)?ansi2knr$/)
    	{
    	  # An option like "../lib/ansi2knr" is allowed.  With no
    	  # path prefix, we assume the required programs are in this
    	  # directory.  We save the actual option for later.
    	  $options->{'ansi2knr'} = [$_, $where];
    	}
          elsif ($_ eq 'no-installman' || $_ eq 'no-installinfo'
    	     || $_ eq 'dist-shar' || $_ eq 'dist-zip'
    	     || $_ eq 'dist-tarZ' || $_ eq 'dist-bzip2'
    	     || $_ eq 'no-dist-gzip' || $_ eq 'no-dist'
    	     || $_ eq 'dejagnu' || $_ eq 'no-texinfo.tex'
    	     || $_ eq 'readme-alpha' || $_ eq 'check-news'
    	     || $_ eq 'subdir-objects' || $_ eq 'nostdinc'
    	     || $_ eq 'no-exeext' || $_ eq 'no-define'
    	     || $_ eq 'std-options'
    	     || $_ eq 'cygnus' || $_ eq 'no-dependencies')
    	{
    	  # Explicitly recognize these.
    	}
          elsif ($_ =~ /^filename-length-max=(\d+)$/)
    	{
    	  delete $options->{$_};
    	  $options->{'filename-length-max'} = [$_, $1];
    	}
          elsif ($_ eq 'tar-v7' || $_ eq 'tar-ustar' || $_ eq 'tar-pax')
    	{
    	  error ($where,
    		 "option `$_' must be an argument of AM_INIT_AUTOMAKE")
    	    if $where->get !~ /^configure\./;
    	  for my $opt ('tar-v7', 'tar-ustar', 'tar-pax')
    	    {
    	      next if $opt eq $_;
    	      if (exists $options->{$opt})
    		{
    		  error ($where,
    			 "options `$_' and `$opt' are mutually exclusive");
    		  last;
    		}
    	    }
    	}
          elsif (/^\d+\.\d+(?:\.\d+)?[a-z]?(?:-[A-Za-z0-9]+)?$/)
    	{
    	  # Got a version number.
    	  if (Automake::Version::check ($VERSION, $&))
    	    {
    	      error ($where, "require Automake $_, but have $VERSION",
    		     uniq_scope => US_GLOBAL);
    	      return 1;
    	    }
    	}
          elsif (/^(?:--warnings=|-W)(.*)$/)
    	{
    	  foreach my $cat (split (',', $1))
    	    {
    	      msg 'unsupported', $where, "unknown warning category `$cat'"
    		if switch_warning $cat;
    	    }
    	}
          else
    	{
    	  error ($where, "option `$_' not recognized",
    		 uniq_scope => US_GLOBAL);
    	  return 1;
    	}
        }
      return 0;
    }
    
    sub process_option_list ($@)
    {
      my ($where, @list) = @_;
      return _process_option_list (%_options, $where, @list);
    }
    
    sub process_global_option_list ($@)
    {
      my ($where, @list) = @_;
      return _process_option_list (%_global_options, $where, @list);
    }
    
    =item C<set_strictness ($name)>
    
    Set the current strictness level.
    C<$name> should be one of C<'foreign'>, C<'gnu'>, or C<'gnits'>.
    
    =cut
    
    # Set strictness.
    sub set_strictness ($)
    {
      $strictness_name = $_[0];
    
      Automake::ChannelDefs::set_strictness ($strictness_name);
    
      if ($strictness_name eq 'gnu')
        {
          $strictness = GNU;
        }
      elsif ($strictness_name eq 'gnits')
        {
          $strictness = GNITS;
        }
      elsif ($strictness_name eq 'foreign')
        {
          $strictness = FOREIGN;
        }
      else
        {
          prog_error "level `$strictness_name' not recognized\n";
        }
    }
    
    1;
    
    ### Setup "GNU" style for perl-mode and cperl-mode.
    ## Local Variables:
    ## perl-indent-level: 2
    ## perl-continued-statement-offset: 2
    ## perl-continued-brace-offset: 0
    ## perl-brace-offset: 0
    ## perl-brace-imaginary-offset: 0
    ## perl-label-offset: -2
    ## cperl-indent-level: 2
    ## cperl-brace-offset: 0
    ## cperl-continued-brace-offset: 0
    ## cperl-label-offset: -2
    ## cperl-extra-newline-before-brace: t
    ## cperl-merge-trailing-else: nil
    ## cperl-continued-statement-offset: 2
    ## End: