automake.in: Move out var/const declarationsgsoc-refactoring

This is the first step in modularizing Automake for the Summer of Code project
"Modularize Automake to improve its test-suite".  The goal here is to move out
as much as possible from bin/automake.in in order for it to eventually only
call methods from the different modules.

* lib/Automake/Global.pm: The Automake::Global package will now hold variable
  and constant declarations in order to move subroutines that use them out of
  the main package.
* bin/automake.in: The $gen_copyright var/constant was left here because it
  uses a variable passed directly by the Makefile here.  This needs to be
  looked at later.  Te rest of the declarations was moved.

3 files changed, 497 insertions, 434 deletions

diff --git a/bin/automake.in b/bin/automake.in
index b4ae8f43f..ce2bc8919 100644..100755
--- a/bin/automake.in
+++ b/bin/automake.in
@@ -50,6 +50,7 @@ BEGIN
       import Thread::Queue;
     }
 }
+use Automake::Global;
 use Automake::General;
 use Automake::XFile;
 use Automake::Channels;
@@ -130,97 +131,9 @@ sub usage ();
 sub version ();
 sub yacc_lex_finish_helper ();
 
-## ----------- ##
-## Constants.  ##
-## ----------- ##
-
-# Some regular expressions.  One reason to put them here is that it
-# makes indentation work better in Emacs.
-
-# Writing singled-quoted-$-terminated regexes is a pain because
-# perl-mode thinks of $' as the ${'} variable (instead of a $ followed
-# by a closing quote.  Letting perl-mode think the quote is not closed
-# leads to all sort of misindentations.  On the other hand, defining
-# regexes as double-quoted strings is far less readable.  So usually
-# we will write:
-#
-#  $REGEX = '^regex_value' . "\$";
-
-my $IGNORE_PATTERN = '^\s*##([^#\n].*)?\n';
-my $WHITE_PATTERN = '^\s*' . "\$";
-my $COMMENT_PATTERN = '^#';
-my $TARGET_PATTERN='[$a-zA-Z0-9_.@%][-.a-zA-Z0-9_(){}/$+@%]*';
-# A rule has three parts: a list of targets, a list of dependencies,
-# and optionally actions.
-my $RULE_PATTERN =
-  "^($TARGET_PATTERN(?:(?:\\\\\n|\\s)+$TARGET_PATTERN)*) *:([^=].*|)\$";
-
-# Only recognize leading spaces, not leading tabs.  If we recognize
-# leading tabs here then we need to make the reader smarter, because
-# otherwise it will think rules like 'foo=bar; \' are errors.
-my $ASSIGNMENT_PATTERN = '^ *([^ \t=:+]*)\s*([:+]?)=\s*(.*)' . "\$";
-# This pattern recognizes a Gnits version id and sets $1 if the
-# release is an alpha release.  We also allow a suffix which can be
-# used to extend the version number with a "fork" identifier.
-my $GNITS_VERSION_PATTERN = '\d+\.\d+([a-z]|\.\d+)?(-[A-Za-z0-9]+)?';
-
-my $IF_PATTERN = '^if\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*)\s*(?:#.*)?' . "\$";
-my $ELSE_PATTERN =
-  '^else(?:\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*))?\s*(?:#.*)?' . "\$";
-my $ENDIF_PATTERN =
-  '^endif(?:\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*))?\s*(?:#.*)?' . "\$";
-my $PATH_PATTERN = '(\w|[+/.-])+';
-# This will pass through anything not of the prescribed form.
-my $INCLUDE_PATTERN = ('^include\s+'
-		       . '((\$\(top_srcdir\)/' . $PATH_PATTERN . ')'
-		       . '|(\$\(srcdir\)/' . $PATH_PATTERN . ')'
-		       . '|([^/\$]' . $PATH_PATTERN . '))\s*(#.*)?' . "\$");
-
-# Directories installed during 'install-exec' phase.
-my $EXEC_DIR_PATTERN =
-  '^(?:bin|sbin|libexec|sysconf|localstate|lib|pkglib|.*exec.*)' . "\$";
-
-# Values for AC_CANONICAL_*
-use constant AC_CANONICAL_BUILD  => 1;
-use constant AC_CANONICAL_HOST   => 2;
-use constant AC_CANONICAL_TARGET => 3;
-
-# Values indicating when something should be cleaned.
-use constant MOSTLY_CLEAN     => 0;
-use constant CLEAN            => 1;
-use constant DIST_CLEAN       => 2;
-use constant MAINTAINER_CLEAN => 3;
-
-# Libtool files.
-my @libtool_files = qw(ltmain.sh config.guess config.sub);
-# ltconfig appears here for compatibility with old versions of libtool.
-my @libtool_sometimes = qw(ltconfig ltcf-c.sh ltcf-cxx.sh ltcf-gcj.sh);
-
-# Commonly found files we look for and automatically include in
-# DISTFILES.
-my @common_files =
-    (qw(ABOUT-GNU ABOUT-NLS AUTHORS BACKLOG COPYING COPYING.DOC COPYING.LIB
-	COPYING.LESSER ChangeLog INSTALL NEWS README THANKS TODO
-	ar-lib compile config.guess config.rpath
-	config.sub depcomp install-sh libversion.in mdate-sh
-	missing mkinstalldirs py-compile texinfo.tex ylwrap),
-     @libtool_files, @libtool_sometimes);
-
-# Commonly used files we auto-include, but only sometimes.  This list
-# is used for the --help output only.
-my @common_sometimes =
-  qw(aclocal.m4 acconfig.h config.h.top config.h.bot configure
-     configure.ac configure.in stamp-vti);
-
-# Standard directories from the GNU Coding Standards, and additional
-# pkg* directories from Automake.  Stored in a hash for fast member check.
-my %standard_prefix =
-    map { $_ => 1 } (qw(bin data dataroot doc dvi exec html include info
-			lib libexec lisp locale localstate man man1 man2
-			man3 man4 man5 man6 man7 man8 man9 oldinclude pdf
-			pkgdata pkginclude pkglib pkglibexec ps sbin
-			sharedstate sysconf));
-
+# This variable was kept here because it uses the \$RELEASE_YEAR variable
+# which is passed directly to this script by the Makefile. We need to find a
+# better solution.
 # Copyright on generated Makefile.ins.
 my $gen_copyright = "\
 # Copyright (C) 1994-$RELEASE_YEAR Free Software Foundation, Inc.
@@ -235,349 +148,6 @@ my $gen_copyright = "\
 # PARTICULAR PURPOSE.
 ";
 
-# These constants are returned by the lang_*_rewrite functions.
-# LANG_SUBDIR means that the resulting object file should be in a
-# subdir if the source file is.  In this case the file name cannot
-# have '..' components.
-use constant LANG_IGNORE  => 0;
-use constant LANG_PROCESS => 1;
-use constant LANG_SUBDIR  => 2;
-
-# These are used when keeping track of whether an object can be built
-# by two different paths.
-use constant COMPILE_LIBTOOL  => 1;
-use constant COMPILE_ORDINARY => 2;
-
-# We can't always associate a location to a variable or a rule,
-# when it's defined by Automake.  We use INTERNAL in this case.
-use constant INTERNAL => new Automake::Location;
-
-# Serialization keys for message queues.
-use constant QUEUE_MESSAGE   => "msg";
-use constant QUEUE_CONF_FILE => "conf file";
-use constant QUEUE_LOCATION  => "location";
-use constant QUEUE_STRING    => "string";
-
-## ---------------------------------- ##
-## Variables related to the options.  ##
-## ---------------------------------- ##
-
-# TRUE if we should always generate Makefile.in.
-my $force_generation = 1;
-
-# From the Perl manual.
-my $symlink_exists = (eval 'symlink ("", "");', $@ eq '');
-
-# TRUE if missing standard files should be installed.
-my $add_missing = 0;
-
-# TRUE if we should copy missing files; otherwise symlink if possible.
-my $copy_missing = 0;
-
-# TRUE if we should always update files that we know about.
-my $force_missing = 0;
-
-
-## ---------------------------------------- ##
-## Variables filled during files scanning.  ##
-## ---------------------------------------- ##
-
-# Name of the configure.ac file.
-my $configure_ac;
-
-# Files found by scanning configure.ac for LIBOBJS.
-my %libsources = ();
-
-# Names used in AC_CONFIG_HEADERS call.
-my @config_headers = ();
-
-# Names used in AC_CONFIG_LINKS call.
-my @config_links = ();
-
-# List of Makefile.am's to process, and their corresponding outputs.
-my @input_files = ();
-my %output_files = ();
-
-# Complete list of Makefile.am's that exist.
-my @configure_input_files = ();
-
-# List of files in AC_CONFIG_FILES/AC_OUTPUT without Makefile.am's,
-# and their outputs.
-my @other_input_files = ();
-# Where each AC_CONFIG_FILES/AC_OUTPUT/AC_CONFIG_LINK/AC_CONFIG_HEADERS
-# appears.  The keys are the files created by these macros.
-my %ac_config_files_location = ();
-# The condition under which AC_CONFIG_FOOS appears.
-my %ac_config_files_condition = ();
-
-# Directory to search for configure-required files.  This
-# will be computed by locate_aux_dir() and can be set using
-# AC_CONFIG_AUX_DIR in configure.ac.
-# $CONFIG_AUX_DIR is the 'raw' directory, valid only in the source-tree.
-my $config_aux_dir = '';
-my $config_aux_dir_set_in_configure_ac = 0;
-# $AM_CONFIG_AUX_DIR is prefixed with $(top_srcdir), so it can be used
-# in Makefiles.
-my $am_config_aux_dir = '';
-
-# Directory to search for AC_LIBSOURCE files, as set by AC_CONFIG_LIBOBJ_DIR
-# in configure.ac.
-my $config_libobj_dir = '';
-
-# Whether AM_GNU_GETTEXT has been seen in configure.ac.
-my $seen_gettext = 0;
-# Whether AM_GNU_GETTEXT([external]) is used.
-my $seen_gettext_external = 0;
-# Where AM_GNU_GETTEXT appears.
-my $ac_gettext_location;
-# Whether AM_GNU_GETTEXT_INTL_SUBDIR has been seen.
-my $seen_gettext_intl = 0;
-
-# The arguments of the AM_EXTRA_RECURSIVE_TARGETS call (if any).
-my @extra_recursive_targets = ();
-
-# Lists of tags supported by Libtool.
-my %libtool_tags = ();
-# 1 if Libtool uses LT_SUPPORTED_TAG.  If it does, then it also
-# uses AC_REQUIRE_AUX_FILE.
-my $libtool_new_api = 0;
-
-# Most important AC_CANONICAL_* macro seen so far.
-my $seen_canonical = 0;
-
-# Where AM_MAINTAINER_MODE appears.
-my $seen_maint_mode;
-
-# Actual version we've seen.
-my $package_version = '';
-
-# Where version is defined.
-my $package_version_location;
-
-# TRUE if we've seen AM_PROG_AR
-my $seen_ar = 0;
-
-# Location of AC_REQUIRE_AUX_FILE calls, indexed by their argument.
-my %required_aux_file = ();
-
-# Where AM_INIT_AUTOMAKE is called.
-my $seen_init_automake = 0;
-
-# TRUE if we've seen AM_AUTOMAKE_VERSION.
-my $seen_automake_version = 0;
-
-# Hash table of discovered configure substitutions.  Keys are names,
-# values are 'FILE:LINE' strings which are used by error message
-# generation.
-my %configure_vars = ();
-
-# Ignored configure substitutions (i.e., variables not to be output in
-# Makefile.in)
-my %ignored_configure_vars = ();
-
-# Files included by $configure_ac.
-my @configure_deps = ();
-
-# Greatest timestamp of configure's dependencies.
-my $configure_deps_greatest_timestamp = 0;
-
-# Hash table of AM_CONDITIONAL variables seen in configure.
-my %configure_cond = ();
-
-# This maps extensions onto language names.
-my %extension_map = ();
-
-# List of the DIST_COMMON files we discovered while reading
-# configure.ac.
-my @configure_dist_common = ();
-
-# This maps languages names onto objects.
-my %languages = ();
-# Maps each linker variable onto a language object.
-my %link_languages = ();
-
-# maps extensions to needed source flags.
-my %sourceflags = ();
-
-# List of targets we must always output.
-# FIXME: Complete, and remove falsely required targets.
-my %required_targets =
-  (
-   'all'          => 1,
-   'dvi'	  => 1,
-   'pdf'	  => 1,
-   'ps'		  => 1,
-   'info'	  => 1,
-   'install-info' => 1,
-   'install'      => 1,
-   'install-data' => 1,
-   'install-exec' => 1,
-   'uninstall'    => 1,
-
-   # FIXME: Not required, temporary hacks.
-   # Well, actually they are sort of required: the -recursive
-   # targets will run them anyway...
-   'html-am'         => 1,
-   'dvi-am'          => 1,
-   'pdf-am'          => 1,
-   'ps-am'           => 1,
-   'info-am'         => 1,
-   'install-data-am' => 1,
-   'install-exec-am' => 1,
-   'install-html-am' => 1,
-   'install-dvi-am'  => 1,
-   'install-pdf-am'  => 1,
-   'install-ps-am'   => 1,
-   'install-info-am' => 1,
-   'installcheck-am' => 1,
-   'uninstall-am'    => 1,
-   'tags-am'         => 1,
-   'ctags-am'        => 1,
-   'cscopelist-am'   => 1,
-   'install-man'     => 1,
-  );
-
-# Queue to push require_conf_file requirements to.
-my $required_conf_file_queue;
-
-# The name of the Makefile currently being processed.
-my $am_file = 'BUG';
-
-################################################################
-
-## ------------------------------------------ ##
-## Variables reset by &initialize_per_input.  ##
-## ------------------------------------------ ##
-
-# Relative dir of the output makefile.
-my $relative_dir;
-
-# Greatest timestamp of the output's dependencies (excluding
-# configure's dependencies).
-my $output_deps_greatest_timestamp;
-
-# These variables are used when generating each Makefile.in.
-# They hold the Makefile.in until it is ready to be printed.
-my $output_vars;
-my $output_all;
-my $output_header;
-my $output_rules;
-my $output_trailer;
-
-# This is the conditional stack, updated on if/else/endif, and
-# used to build Condition objects.
-my @cond_stack;
-
-# This holds the set of included files.
-my @include_stack;
-
-# List of dependencies for the obvious targets.
-my @all;
-my @check;
-my @check_tests;
-
-# Keys in this hash table are files to delete.  The associated
-# value tells when this should happen (MOSTLY_CLEAN, DIST_CLEAN, etc.)
-my %clean_files;
-
-# Keys in this hash table are object files or other files in
-# subdirectories which need to be removed.  This only holds files
-# which are created by compilations.  The value in the hash indicates
-# when the file should be removed.
-my %compile_clean_files;
-
-# Keys in this hash table are directories where we expect to build a
-# libtool object.  We use this information to decide what directories
-# to delete.
-my %libtool_clean_directories;
-
-# Value of $(SOURCES), used by tags.am.
-my @sources;
-# Sources which go in the distribution.
-my @dist_sources;
-
-# This hash maps object file names onto their corresponding source
-# file names.  This is used to ensure that each object is created
-# by a single source file.
-my %object_map;
-
-# This hash maps object file names onto an integer value representing
-# whether this object has been built via ordinary compilation or
-# libtool compilation (the COMPILE_* constants).
-my %object_compilation_map;
-
-
-# This keeps track of the directories for which we've already
-# created dirstamp code.  Keys are directories, values are stamp files.
-# Several keys can share the same stamp files if they are equivalent
-# (as are './/foo' and 'foo').
-my %directory_map;
-
-# All .P files.
-my %dep_files;
-
-# This is a list of all targets to run during "make dist".
-my @dist_targets;
-
-# List of all programs, libraries and ltlibraries as returned
-# by am_install_var
-my @proglist;
-my @liblist;
-my @ltliblist;
-# Blacklist of targets (as canonical base name) for which object file names
-# may not be automatically shortened
-my @dup_shortnames;
-
-# Keep track of all programs declared in this Makefile, without
-# $(EXEEXT).  @substitutions@ are not listed.
-my %known_programs;
-my %known_libraries;
-
-# This keeps track of which extensions we've seen (that we care
-# about).
-my %extension_seen;
-
-# This is random scratch space for the language finish functions.
-# Don't randomly overwrite it; examine other uses of keys first.
-my %language_scratch;
-
-# We keep track of which objects need special (per-executable)
-# handling on a per-language basis.
-my %lang_specific_files;
-
-# List of distributed files to be put in DIST_COMMON.
-my @dist_common;
-
-# This is set when 'handle_dist' has finished.  Once this happens,
-# we should no longer push on dist_common.
-my $handle_dist_run;
-
-# Used to store a set of linkers needed to generate the sources currently
-# under consideration.
-my %linkers_used;
-
-# True if we need 'LINK' defined.  This is a hack.
-my $need_link;
-
-# Does the generated Makefile have to build some compiled object
-# (for binary programs, or plain or libtool libraries)?
-my $must_handle_compiled_objects;
-
-# Record each file processed by make_paragraphs.
-my %transformed_files;
-
-################################################################
-
-## ---------------------------------------------- ##
-## Variables not reset by &initialize_per_input.  ##
-## ---------------------------------------------- ##
-
-# Cache each file processed by make_paragraphs.
-# (This is different from %transformed_files because
-# %transformed_files is reset for each file while %am_file_cache
-# it global to the run.)
-my %am_file_cache;
-
 ################################################################
 
 # var_SUFFIXES_trigger ($TYPE, $VALUE)
diff --git a/lib/Automake/Global.pm b/lib/Automake/Global.pm
new file mode 100644
index 000000000..2288d655a
--- /dev/null
+++ b/lib/Automake/Global.pm
@@ -0,0 +1,492 @@
+# Copyright (C) 2018  Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+package Automake::Global;
+
+use 5.006;
+use strict;
+use Exporter;
+
+use Automake::Location;
+
+use vars qw (@ISA @EXPORT);
+
+@ISA = qw (Exporter);
+
+@EXPORT = qw ($IGNORE_PATTERN $WHITE_PATTERN $COMMENT_PATTERN $RULE_PATTERN
+    $ASSIGNMENT_PATTERN $GNITS_VERSION_PATTERN $IF_PATTERN $ELSE_PATTERN
+    $ENDIF_PATTERN $PATH_PATTERN $INCLUDE_PATTERN $EXEC_DIR_PATTERN
+    @libtool_files @libtool_sometimes @common_files @common_sometimes
+    %standard_prefix $force_generation $symlink_exists $add_missing
+    $copy_missing $force_missing %libsources @config_headers @config_links
+    @input_files %output_files @configure_input_files @other_input_files
+    %ac_config_files_location %ac_config_files_condition $config_aux_dir
+    $config_aux_dir_set_in_configure_ac $am_config_aux_dir $config_libobj_dir
+    $seen_gettext $seen_gettext_external $seen_gettext_intl
+    @extra_recursive_targets %libtool_tags $libtool_new_api $seen_canonical
+    $package_version $seen_ar %required_aux_file $seen_init_automake
+    $seen_automake_version %configure_vars %ignored_configure_vars
+    @configure_deps $configure_deps_greatest_timestamp %configure_cond
+    %extension_map @configure_dist_common %languages %link_languages
+    %sourceflags %required_targets $am_file $configure_ac $ac_gettext_location
+    $seen_maint_mode $package_version_location $required_conf_file_queue
+    $relative_dir $output_deps_greatest_timestamp $output_vars $output_all
+    $output_header $output_rules $output_trailer @cond_stack @include_stack
+    @all @check @check_tests %clean_files %compile_clean_files
+    %libtool_clean_directories @sources @dist_sources %object_map
+    %object_compilation_map %directory_map %dep_files @dist_targets @proglist
+    @liblist @ltliblist @dup_shortnames %known_programs %known_libraries
+    %extension_seen %language_scratch %lang_specific_files @dist_common
+    $handle_dist_run %linkers_used $need_link $must_handle_compiled_objects
+    %transformed_files %am_file_cache AC_CANONICAL_BUILD AC_CANONICAL_HOST
+    AC_CANONICAL_TARGET MOSTLY_CLEAN CLEAN DIST_CLEAN MAINTAINER_CLEAN
+    LANG_IGNORE LANG_PROCESS LANG_SUBDIR COMPILE_LIBTOOL COMPILE_ORDINARY
+    INTERNAL QUEUE_MESSAGE QUEUE_CONF_FILE QUEUE_LOCATION QUEUE_STRING);
+
+## ----------- ##
+## Constants.  ##
+## ----------- ##
+
+# Some regular expressions.  One reason to put them here is that it
+# makes indentation work better in Emacs.
+
+# Writing singled-quoted-$-terminated regexes is a pain because
+# perl-mode thinks of $' as the ${'} variable (instead of a $ followed
+# by a closing quote.  Letting perl-mode think the quote is not closed
+# leads to all sort of misindentations.  On the other hand, defining
+# regexes as double-quoted strings is far less readable.  So usually
+# we will write:
+#
+#  $REGEX = '^regex_value' . "\$";
+
+our $IGNORE_PATTERN = '^\s*##([^#\n].*)?\n';
+our $WHITE_PATTERN = '^\s*' . "\$";
+our $COMMENT_PATTERN = '^#';
+our $TARGET_PATTERN='[$a-zA-Z0-9_.@%][-.a-zA-Z0-9_(){}/$+@%]*';
+# A rule has three parts: a list of targets, a list of dependencies,
+# and optionally actions.
+our $RULE_PATTERN =
+  "^($TARGET_PATTERN(?:(?:\\\\\n|\\s)+$TARGET_PATTERN)*) *:([^=].*|)\$";
+
+# Only recognize leading spaces, not leading tabs.  If we recognize
+# leading tabs here then we need to make the reader smarter, because
+# otherwise it will think rules like 'foo=bar; \' are errors.
+our $ASSIGNMENT_PATTERN = '^ *([^ \t=:+]*)\s*([:+]?)=\s*(.*)' . "\$";
+# This pattern recognizes a Gnits version id and sets $1 if the
+# release is an alpha release.  We also allow a suffix which can be
+# used to extend the version number with a "fork" identifier.
+our $GNITS_VERSION_PATTERN = '\d+\.\d+([a-z]|\.\d+)?(-[A-Za-z0-9]+)?';
+
+our $IF_PATTERN = '^if\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*)\s*(?:#.*)?' . "\$";
+our $ELSE_PATTERN =
+  '^else(?:\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*))?\s*(?:#.*)?' . "\$";
+our $ENDIF_PATTERN =
+  '^endif(?:\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*))?\s*(?:#.*)?' . "\$";
+our $PATH_PATTERN = '(\w|[+/.-])+';
+# This will pass through anything not of the prescribed form.
+our $INCLUDE_PATTERN = ('^include\s+'
+		       . '((\$\(top_srcdir\)/' . $PATH_PATTERN . ')'
+		       . '|(\$\(srcdir\)/' . $PATH_PATTERN . ')'
+		       . '|([^/\$]' . $PATH_PATTERN . '))\s*(#.*)?' . "\$");
+
+# Directories installed during 'install-exec' phase.
+our $EXEC_DIR_PATTERN =
+  '^(?:bin|sbin|libexec|sysconf|localstate|lib|pkglib|.*exec.*)' . "\$";
+
+# Values for AC_CANONICAL_*
+use constant AC_CANONICAL_BUILD  => 1;
+use constant AC_CANONICAL_HOST   => 2;
+use constant AC_CANONICAL_TARGET => 3;
+
+# Values indicating when something should be cleaned.
+use constant MOSTLY_CLEAN     => 0;
+use constant CLEAN            => 1;
+use constant DIST_CLEAN       => 2;
+use constant MAINTAINER_CLEAN => 3;
+
+# Libtool files.
+our @libtool_files = qw(ltmain.sh config.guess config.sub);
+# ltconfig appears here for compatibility with old versions of libtool.
+our @libtool_sometimes = qw(ltconfig ltcf-c.sh ltcf-cxx.sh ltcf-gcj.sh);
+
+# Commonly found files we look for and automatically include in
+# DISTFILES.
+our @common_files =
+    (qw(ABOUT-GNU ABOUT-NLS AUTHORS BACKLOG COPYING COPYING.DOC COPYING.LIB
+	COPYING.LESSER ChangeLog INSTALL NEWS README THANKS TODO
+	ar-lib compile config.guess config.rpath
+	config.sub depcomp install-sh libversion.in mdate-sh
+	missing mkinstalldirs py-compile texinfo.tex ylwrap),
+     @libtool_files, @libtool_sometimes);
+
+# Commonly used files we auto-include, but only sometimes.  This list
+# is used for the --help output only.
+our @common_sometimes =
+  qw(aclocal.m4 acconfig.h config.h.top config.h.bot configure
+     configure.ac configure.in stamp-vti);
+
+# Standard directories from the GNU Coding Standards, and additional
+# pkg* directories from Automake.  Stored in a hash for fast member check.
+our %standard_prefix =
+    map { $_ => 1 } (qw(bin data dataroot doc dvi exec html include info
+			lib libexec lisp locale localstate man man1 man2
+			man3 man4 man5 man6 man7 man8 man9 oldinclude pdf
+			pkgdata pkginclude pkglib pkglibexec ps sbin
+			sharedstate sysconf));
+
+# These constants are returned by the lang_*_rewrite functions.
+# LANG_SUBDIR means that the resulting object file should be in a
+# subdir if the source file is.  In this case the file name cannot
+# have '..' components.
+use constant LANG_IGNORE  => 0;
+use constant LANG_PROCESS => 1;
+use constant LANG_SUBDIR  => 2;
+
+# These are used when keeping track of whether an object can be built
+# by two different paths.
+use constant COMPILE_LIBTOOL  => 1;
+use constant COMPILE_ORDINARY => 2;
+
+# We can't always associate a location to a variable or a rule,
+# when it's defined by Automake.  We use INTERNAL in this case.
+use constant INTERNAL => new Automake::Location;
+
+# Serialization keys for message queues.
+use constant QUEUE_MESSAGE   => "msg";
+use constant QUEUE_CONF_FILE => "conf file";
+use constant QUEUE_LOCATION  => "location";
+use constant QUEUE_STRING    => "string";
+
+## ---------------------------------- ##
+## Variables related to the options.  ##
+## ---------------------------------- ##
+
+# TRUE if we should always generate Makefile.in.
+our $force_generation = 1;
+
+# From the Perl manual.
+our $symlink_exists = (eval 'symlink ("", "");', $@ eq '');
+
+# TRUE if missing standard files should be installed.
+our $add_missing = 0;
+
+# TRUE if we should copy missing files; otherwise symlink if possible.
+our $copy_missing = 0;
+
+# TRUE if we should always update files that we know about.
+our $force_missing = 0;
+
+
+## ---------------------------------------- ##
+## Variables filled during files scanning.  ##
+## ---------------------------------------- ##
+
+# Name of the configure.ac file.
+our $configure_ac;
+
+# Files found by scanning configure.ac for LIBOBJS.
+our %libsources = ();
+
+# Names used in AC_CONFIG_HEADERS call.
+our @config_headers = ();
+
+# Names used in AC_CONFIG_LINKS call.
+our @config_links = ();
+
+# List of Makefile.am's to process, and their corresponding outputs.
+our @input_files = ();
+our %output_files = ();
+
+# Complete list of Makefile.am's that exist.
+our @configure_input_files = ();
+
+# List of files in AC_CONFIG_FILES/AC_OUTPUT without Makefile.am's,
+# and their outputs.
+our @other_input_files = ();
+# Where each AC_CONFIG_FILES/AC_OUTPUT/AC_CONFIG_LINK/AC_CONFIG_HEADERS
+# appears.  The keys are the files created by these macros.
+our %ac_config_files_location = ();
+# The condition under which AC_CONFIG_FOOS appears.
+our %ac_config_files_condition = ();
+
+# Directory to search for configure-required files.  This
+# will be computed by locate_aux_dir() and can be set using
+# AC_CONFIG_AUX_DIR in configure.ac.
+# $CONFIG_AUX_DIR is the 'raw' directory, valid only in the source-tree.
+our $config_aux_dir = '';
+our $config_aux_dir_set_in_configure_ac = 0;
+# $AM_CONFIG_AUX_DIR is prefixed with $(top_srcdir), so it can be used
+# in Makefiles.
+our $am_config_aux_dir = '';
+
+# Directory to search for AC_LIBSOURCE files, as set by AC_CONFIG_LIBOBJ_DIR
+# in configure.ac.
+our $config_libobj_dir = '';
+
+# Whether AM_GNU_GETTEXT has been seen in configure.ac.
+our $seen_gettext = 0;
+# Whether AM_GNU_GETTEXT([external]) is used.
+our $seen_gettext_external = 0;
+# Where AM_GNU_GETTEXT appears.
+our $ac_gettext_location;
+# Whether AM_GNU_GETTEXT_INTL_SUBDIR has been seen.
+our $seen_gettext_intl = 0;
+
+# The arguments of the AM_EXTRA_RECURSIVE_TARGETS call (if any).
+our @extra_recursive_targets = ();
+
+# Lists of tags supported by Libtool.
+our %libtool_tags = ();
+# 1 if Libtool uses LT_SUPPORTED_TAG.  If it does, then it also
+# uses AC_REQUIRE_AUX_FILE.
+our $libtool_new_api = 0;
+
+# Most important AC_CANONICAL_* macro seen so far.
+our $seen_canonical = 0;
+
+# Where AM_MAINTAINER_MODE appears.
+our $seen_maint_mode;
+
+# Actual version we've seen.
+our $package_version = '';
+
+# Where version is defined.
+our $package_version_location;
+
+# TRUE if we've seen AM_PROG_AR
+our $seen_ar = 0;
+
+# Location of AC_REQUIRE_AUX_FILE calls, indexed by their argument.
+our %required_aux_file = ();
+
+# Where AM_INIT_AUTOMAKE is called.
+our $seen_init_automake = 0;
+
+# TRUE if we've seen AM_AUTOMAKE_VERSION.
+our $seen_automake_version = 0;
+
+# Hash table of discovered configure substitutions.  Keys are names,
+# values are 'FILE:LINE' strings which are used by error message
+# generation.
+our %configure_vars = ();
+
+# Ignored configure substitutions (i.e., variables not to be output in
+# Makefile.in)
+our %ignored_configure_vars = ();
+
+# Files included by $configure_ac.
+our @configure_deps = ();
+
+# Greatest timestamp of configure's dependencies.
+our $configure_deps_greatest_timestamp = 0;
+
+# Hash table of AM_CONDITIONAL variables seen in configure.
+our %configure_cond = ();
+
+# This maps extensions onto language names.
+our %extension_map = ();
+
+# List of the DIST_COMMON files we discovered while reading
+# configure.ac.
+our @configure_dist_common = ();
+
+# This maps languages names onto objects.
+our %languages = ();
+# Maps each linker variable onto a language object.
+our %link_languages = ();
+
+# maps extensions to needed source flags.
+our %sourceflags = ();
+
+# List of targets we must always output.
+# FIXME: Complete, and remove falsely required targets.
+our %required_targets =
+  (
+   'all'          => 1,
+   'dvi'	  => 1,
+   'pdf'	  => 1,
+   'ps'		  => 1,
+   'info'	  => 1,
+   'install-info' => 1,
+   'install'      => 1,
+   'install-data' => 1,
+   'install-exec' => 1,
+   'uninstall'    => 1,
+
+   # FIXME: Not required, temporary hacks.
+   # Well, actually they are sort of required: the -recursive
+   # targets will run them anyway...
+   'html-am'         => 1,
+   'dvi-am'          => 1,
+   'pdf-am'          => 1,
+   'ps-am'           => 1,
+   'info-am'         => 1,
+   'install-data-am' => 1,
+   'install-exec-am' => 1,
+   'install-html-am' => 1,
+   'install-dvi-am'  => 1,
+   'install-pdf-am'  => 1,
+   'install-ps-am'   => 1,
+   'install-info-am' => 1,
+   'installcheck-am' => 1,
+   'uninstall-am'    => 1,
+   'tags-am'         => 1,
+   'ctags-am'        => 1,
+   'cscopelist-am'   => 1,
+   'install-man'     => 1,
+  );
+
+# Queue to push require_conf_file requirements to.
+our $required_conf_file_queue;
+
+# The name of the Makefile currently being processed.
+our $am_file = 'BUG';
+
+################################################################
+
+## ------------------------------------------ ##
+## Variables reset by &initialize_per_input.  ##
+## ------------------------------------------ ##
+
+# Relative dir of the output makefile.
+our $relative_dir;
+
+# Greatest timestamp of the output's dependencies (excluding
+# configure's dependencies).
+our $output_deps_greatest_timestamp;
+
+# These variables are used when generating each Makefile.in.
+# They hold the Makefile.in until it is ready to be printed.
+our $output_vars;
+our $output_all;
+our $output_header;
+our $output_rules;
+our $output_trailer;
+
+# This is the conditional stack, updated on if/else/endif, and
+# used to build Condition objects.
+our @cond_stack;
+
+# This holds the set of included files.
+our @include_stack;
+
+# List of dependencies for the obvious targets.
+our @all;
+our @check;
+our @check_tests;
+
+# Keys in this hash table are files to delete.  The associated
+# value tells when this should happen (MOSTLY_CLEAN, DIST_CLEAN, etc.)
+our %clean_files;
+
+# Keys in this hash table are object files or other files in
+# subdirectories which need to be removed.  This only holds files
+# which are created by compilations.  The value in the hash indicates
+# when the file should be removed.
+our %compile_clean_files;
+
+# Keys in this hash table are directories where we expect to build a
+# libtool object.  We use this information to decide what directories
+# to delete.
+our %libtool_clean_directories;
+
+# Value of $(SOURCES), used by tags.am.
+our @sources;
+# Sources which go in the distribution.
+our @dist_sources;
+
+# This hash maps object file names onto their corresponding source
+# file names.  This is used to ensure that each object is created
+# by a single source file.
+our %object_map;
+
+# This hash maps object file names onto an integer value representing
+# whether this object has been built via ordinary compilation or
+# libtool compilation (the COMPILE_* constants).
+our %object_compilation_map;
+
+
+# This keeps track of the directories for which we've already
+# created dirstamp code.  Keys are directories, values are stamp files.
+# Several keys can share the same stamp files if they are equivalent
+# (as are './/foo' and 'foo').
+our %directory_map;
+
+# All .P files.
+our %dep_files;
+
+# This is a list of all targets to run during "make dist".
+our @dist_targets;
+
+# List of all programs, libraries and ltlibraries as returned
+# by am_install_var
+our @proglist;
+our @liblist;
+our @ltliblist;
+# Blacklist of targets (as canonical base name) for which object file names
+# may not be automatically shortened
+our @dup_shortnames;
+
+# Keep track of all programs declared in this Makefile, without
+# $(EXEEXT).  @substitutions@ are not listed.
+our %known_programs;
+our %known_libraries;
+
+# This keeps track of which extensions we've seen (that we care
+# about).
+our %extension_seen;
+
+# This is random scratch space for the language finish functions.
+# Don't randomly overwrite it; examine other uses of keys first.
+our %language_scratch;
+
+# We keep track of which objects need special (per-executable)
+# handling on a per-language basis.
+our %lang_specific_files;
+
+# List of distributed files to be put in DIST_COMMON.
+our @dist_common;
+
+# This is set when 'handle_dist' has finished.  Once this happens,
+# we should no longer push on dist_common.
+our $handle_dist_run;
+
+# Used to store a set of linkers needed to generate the sources currently
+# under consideration.
+our %linkers_used;
+
+# True if we need 'LINK' defined.  This is a hack.
+our $need_link;
+
+# Does the generated Makefile have to build some compiled object
+# (for binary programs, or plain or libtool libraries)?
+our $must_handle_compiled_objects;
+
+# Record each file processed by make_paragraphs.
+our %transformed_files;
+
+################################################################
+
+## ---------------------------------------------- ##
+## Variables not reset by &initialize_per_input.  ##
+## ---------------------------------------------- ##
+
+# Cache each file processed by make_paragraphs.
+# (This is different from %transformed_files because
+# %transformed_files is reset for each file while %am_file_cache
+# it global to the run.)
+our %am_file_cache;
+
+1;
diff --git a/lib/Automake/local.mk b/lib/Automake/local.mk
index fbb21f3f1..79d28a596 100644
--- a/lib/Automake/local.mk
+++ b/lib/Automake/local.mk
@@ -28,6 +28,7 @@ dist_perllib_DATA = \
   %D%/DisjConditions.pm \
   %D%/FileUtils.pm \
   %D%/General.pm \
+  %D%/Global.pm \
   %D%/Getopt.pm \
   %D%/Item.pm \
   %D%/ItemDef.pm \