Version 2.4.1a delayed.

* NEWS (2.4.1a): Increment release date as there has been a small delay in getting the announcements and tarballs out.
Version 2.4.1a.
2026-08-08 10:15:14 +00:00 · 2010-01-22 13:02:31 -05:00 · 2010-01-21 18:53:58 -05:00 · 2010-01-21 18:52:49 -05:00 · 2010-01-21 16:48:35 -05:00 · 2010-01-20 00:26:05 -05:00
185 changed files with 1954 additions and 1699 deletions
@@ -26,6 +26,7 @@ conftest*
 gnulib
 javacomp.sh
 javaexec.sh
+maint.mk
 patches
 releases
 stamp-h*
@@ -26,6 +26,7 @@
 /gnulib
 /javacomp.sh
 /javaexec.sh
+/maint.mk
 /patches
 /releases
 /stamp-h*
@@ -0,0 +1,6 @@
+COPYING
+^doc/fdl\.texi$
+^doc/gpl-3\.0\.texi$
+^doc/yacc\.1\.in$
+^src/parse-gram\.h$
+^data/m4sugar/
@@ -1,3 +1,406 @@
+2010-01-22  Joel E. Denny  <[email protected]>
+
+	Version 2.4.1a delayed.
+	* NEWS (2.4.1a): Increment release date as there has been a
+	small delay in getting the announcements and tarballs out.
+
+2010-01-21  Joel E. Denny  <[email protected]>
+
+	Version 2.4.1a.
+	* NEWS (2.4.2): Rename to...
+	(2.4.1a): ... this for now.  Set date.
+	* configure.ac (AM_INIT_AUTOMAKE): Disable gnits for now because
+	it does not like this version name.
+
+2010-01-21  Joel E. Denny  <[email protected]>
+
+	* cfg.mk (gnulib_dir): Assume gnulib is a subdirectory.
+
+2010-01-21  Joel E. Denny  <[email protected]>
+
+	maint: automate PACKAGE_COPYRIGHT_YEAR update, and update it.
+	* HACKING (Release Procedure): Update notes on copyright years.
+	* Makefile.am (update-package-copyright-year): New target rule.
+	* build-aux/update-package-copyright-year: New file.
+	* cfg.mk (update-copyright): Add update-package-copyright-year
+	as a dependency.
+
+2010-01-19  Joel E. Denny  <[email protected]>
+
+	* bootstrap: Import improvements from latest gnulib.
+
+2010-01-19  Joel E. Denny  <[email protected]>
+
+	build: require Automake 1.11.1 to avoid a security flaw.
+	* HACKING (Release Procedure): Don't document Automake security
+	flaw here.
+	* configure.ac (AM_INIT_AUTOMAKE): Require 1.11.1, and explain
+	why here.
+
+2010-01-19  Joel E. Denny  <[email protected]>
+
+	gnulib: update to latest.
+
+2010-01-19  Joel E. Denny  <[email protected]>
+
+	ChangeLog (2006-09-15): add Odd Arild Olsen's role for push.c.
+
+2010-01-15  Joel E. Denny  <[email protected]>
+
+	Thank the developer of the initial push parser implementation.
+	This unfortunate oversight is several years old.
+	* THANKS (Odd Arild Olsen): Add.
+
+2010-01-04  Joel E. Denny  <[email protected]>
+
+	maint: run "make update-copyright"
+
+2009-12-30  Joel E. Denny  <[email protected]>
+
+	POSIX: warn if %prec's token was not defined.
+	Reported by Florian Krohm at
+	<http://lists.gnu.org/archive/html/bug-bison/2009-12/msg00005.html>.
+	* NEWS (2.4.2): Document.
+	* src/reader.c (grammar_rule_check): Implement.
+	(grammar_current_rule_prec_set): Add comments explaining that we
+	here assume a %prec identifier is a token, but we still manage
+	to support POSIX.
+	* tests/input.at (%prec's token must be defined): New test
+	group.
+
+2009-12-31  Joel E. Denny  <[email protected]>
+
+	* HACKING (Release Procedure): Recommend a secure automake.
+
+2009-12-21  Joel E. Denny  <[email protected]>
+
+	YYFAIL: deprecate.
+	* NEWS (2.4.2): Document deprecation and the phase-out plan.
+	* data/lalr1.java (parser::YYStack::YYFAIL): Add comment about
+	deprecation.
+	* data/yacc.c (YYFAIL): Likewise, and suppress warnings about
+	YYFAIL from GCC cpp's -Wunused-macros.
+	* doc/bison.texinfo (Java Action Features): Remove YYFAIL
+	documentation.
+
+2009-12-16  Joel E. Denny  <[email protected]>
+
+	Add gcc's -Wundef to test suite and fix another warning from it.
+	* NEWS (2.4.2): Update description of -Wundef fix.
+	* configure.ac (WARN_CXXFLAGS_TEST): New substitution.
+	(WARN_CFLAGS_TEST): New substitution.
+	* data/glr.c: Avoid warning about __STRICT_ANSI__.
+	* tests/atlocal.in (CFLAGS): Use WARN_CFLAGS_TEST instead of
+	WARN_CFLAGS.
+	(CXXFLAGS): Use WARN_CXXFLAGS_TEST instead of WARN_CXXFLAGS.
+
+2009-12-16  Joel E. Denny  <[email protected]>
+
+	Document gcc -Wundef fix.
+	* NEWS (2.4.2): Here.
+	* THANKS (Jonathan Nieder): Add.
+
+2009-12-15  Jonathan Nieder  <[email protected]>  (tiny change)
+
+	Avoid warnings from gcc -Wundef y.tab.c.
+	* data/glr.c: Check if YYENABLE_NLS and YYLTYPE_IS_TRIVIAL are
+	defined before using them.
+	* data/lalr1.cc: Likewise.
+	* data/yacc.c: Likewise.
+
+2009-12-15  Joel E. Denny  <[email protected]>
+
+	Import M4 detection fix from Autoconf.
+	Reported by Eric Blake.
+	* m4/m4.m4: Copy serial 10.
+
+2009-12-14  Joel E. Denny  <[email protected]>
+
+	Enable assertion output and --disable-assert for configure.
+	* bootstrap.conf (gnulib_modules): Add assert module.
+	* src/system.h (aver): Define as assert, and summarize the
+	discussion on this issue.
+
+2009-10-11  Joel E. Denny  <[email protected]>
+
+	portability: use va_start and va_end in the same function.
+	* src/complain.c (error_message): Move va_end from here...
+	(ERROR_MESSAGE): ... to here.
+
+2009-10-04  Joel E. Denny  <[email protected]>
+
+	tests: skip tests of file names that platform does not support.
+	Reported by Michael Raskin at
+	<http://lists.gnu.org/archive/html/bug-bison/2009-09/msg00001.html>.
+	* THANKS (Michael Raskin): Add.
+	* tests/output.at (AT_CHECK_OUTPUT_FILE_NAME): Fix.  Cygwin used
+	to fail at least for file names containing ":" or "\".
+
+2009-09-16  Akim Demaille  <[email protected]>
+
+	doc: spell checking.
+	* doc/bison.texinfo: here.
+
+2009-09-13  Joel E. Denny  <[email protected]>
+
+	tests: clean up push.at test group titles.
+	* tests/push.at: Remove "Push Parsing: " from test group titles
+	because these are already under the banner "Push Parsing Tests".
+
+2009-09-03  Akim Demaille  <[email protected]>
+
+	* NEWS (2.4.2): Add "Internationalization" item.
+
+2009-09-03  Akim Demaille  <[email protected]>
+
+	bootstrap: fix/improve find_tool.
+	* bootstrap (find_tool): Improve error messages.
+	Fix typo about find_tool_names.
+
+2009-08-27  Eric Blake  <[email protected]>
+
+	scan-gram: avoid portability trap with ctype usage.
+	* src/scan-gram.l (<SC_ESCAPED_STRING,SC_ESCAPED_CHARACTER>):
+	Avoid compiler warning.
+
+2009-08-27  Joel E. Denny  <[email protected]>
+
+	tests: use perl for printing special sequences to files.
+	And skip tests if perl is not available.  This is better than
+	playing tricks with shell portability.  Suggested by Akim
+	Demaille.
+	* tests/input.at (Bad character literals): Use it here for
+	omitting final newlines.
+	(Bad escapes in literals): Use it here for special characters.
+
+2009-08-21  Joel E. Denny  <[email protected]>
+
+	Use locale when quoting.
+	* src/scan-gram.l (SC_ESCAPED_STRING, SC_ESCAPED_CHARACTER): Use
+	quote rather than implementing quoting here.
+
+2009-08-20  Eric Blake  <[email protected]>
+
+	Make previous patch more robust.
+	* src/output.c (ARRAY_CARDINALITY): New macro, copied from
+	argmatch.h.
+	(output_skeleton): Use it.
+	Suggested by Akim Demaille.
+
+	Import latest m4/m4.m4.
+	* m4/m4.m4: Copy from autoconf 2.64.
+	* configure.ac (M4_GNU_OPTION): New define.
+	* src/output.c (output_skeleton): Use it to resolve FIXME.
+	* NEWS: Mention this.
+
+2009-08-19  Joel E. Denny  <[email protected]>
+
+	Fix complaints about escape sequences.
+	Discussed starting at
+	<http://lists.gnu.org/archive/html/bison-patches/2009-08/msg00036.html>.
+	* src/scan-gram.l (SC_ESCAPED_STRING, SC_ESCAPED_CHARACTER):
+	For a \0 and similar escape sequences meaning the null
+	character, report an invalid escape sequence instead of an
+	invalid null character because the latter does not actually
+	appear in the user's input.
+	In all escape sequence complaints, don't escape the initial
+	backslash, and don't quote when the sequence appears at the end
+	of the complaint line unless there's whitespace that quotearg
+	won't escape.
+	Consistently say "invalid" not "unrecognized".
+	* tests/input.at (Bad escapes in literals): New.
+
+2009-08-19  Akim Demaille  <[email protected]>
+
+	doc: %initial-action to initialize yylloc.
+	Reported by Bill Allombert.
+	* doc/bison.texinfo: Set fill-column to 76.
+	(Location Type): Document the use of %initial-action to initialize
+	yylloc.
+
+2009-08-18  Joel E. Denny  <[email protected]>
+
+	maint: update for gnulib's recent update-copyright changes
+	* gnulib: Update.
+	* .x-update-copyright (COPYING): Add as it's no longer implied
+	when .x-update-copyright is present.
+	* cfg.mk (update-copyright-local): Remove, now ignored.
+	(update-copyright): Declare update-b4-copyright as a dependency.
+
+2009-08-17  Akim Demaille  <[email protected]>
+
+	build: lower gettext requirements.
+
+	Bison was uselessly requiring the formatstring macros from
+	gettext, which resulted in mo files not being installed on systems
+	that perfectly supported Bison mo files.  Lower the requirement.
+	http://lists.gnu.org/archive/html/bug-bison/2009-08/msg00006.html
+
+	* configure.ac: Require need-ngettext instead of
+	need-formatstring-macros.
+	Reported by Martin Jabocs.
+	Suggested by Bruno Haible.
+	* INSTALL: Restructure.
+	(Internationalization): New.
+
+2009-08-14  Joel E. Denny  <[email protected]>
+
+	maint: fix use of copyright year intervals.
+	* gnulib: Update.
+	* bootstrap.conf (gnulib_modules): Update getopt to getopt-gnu
+	as now recommended in gnulib/NEWS.
+	* build-aux/update-b4-copyright: Fix.
+	* cfg.mk (update-copyright-env): Configure update-copyright.
+
+2009-08-12  Akim Demaille  <[email protected]>
+
+	distcheck: fix.
+
+	* examples/calc++/Makefile.am: (EXTRA_DIST): Ship calc.stamp.
+
+2009-08-06  Joel E. Denny  <[email protected]>
+
+	maint: run "make update-copyright"
+	But first...
+	* .x-update-copyright (^data/m4sugar/): Add, because these
+	files are from Autoconf.
+
+2009-08-06  Joel E. Denny  <[email protected]>
+
+	maint: make update-b4-copyright easier to use
+	* build-aux/update-b4-copyright: In warnings, report line
+	numbers rather than character positions.
+	* cfg.mk (update-copyright-local): Set to update-b4-copyright so
+	that update-copyright runs it.
+	* gnulib: Update.
+
+2009-08-05  Joel E. Denny  <[email protected]>
+
+	maint: clean up update-b4-copyright code
+	* build-aux/update-b4-copyright: Do not accept 2-digit
+	UPDATE_COPYRIGHT_YEAR, which was not handled correctly.
+	Don't accept a `[' in a b4_copyright argument.
+	Format code more consistently.
+	Don't assume b4*copyright never occurs.
+
+2009-08-04  Joel E. Denny  <[email protected]>
+
+	maint: automate b4_copyright updates.
+	* Makefile.am (update-b4-copyright): New target rule.
+	* build-aux/Makefile.am (EXTRA_DIST): Add update-b4-copyright.
+	* build-aux/update-b4-copyright: New.
+	* data/yacc.c: Remove stray characters around b4_copyright
+	invocations.
+
+2009-08-04  Joel E. Denny  <[email protected]>
+
+	maint: automate annual package-wide copyright-year update.
+	* .x-update-copyright: New.
+	* Makefile.am (EXTRA_DIST): Remove maint.mk.
+	* bootstrap.conf (gnulib_modules): Add maintainer-makefile and
+	update-copyright.  Remove gnumakefile, which is implied by
+	maintainer-makefile.
+	* cfg.mk (bootstrap-tools): Copy from old maint.mk.
+	* gnulib: Update.
+	* maint.mk: Remove, now copied from gnulib.
+	* examples/extexi: Add missing "(C)" in copyright statement so
+	update-copyright can recognize it.
+	* src/LR0.h: Likewise.
+	* src/print.h: Likewise.
+	* src/print_graph.h: Likewise.
+	* src/gram.c: Add missing comma in copyright statement.
+	* src/gram.h: Likewise.
+
+2009-08-04  Joel E. Denny  <[email protected]>
+
+	Fix "make distcheck".
+	* examples/calc++/Makefile.am: Say $(srcdir)/calc.stamp instead
+	of just calc.stamp.
+
+2009-08-01  Joel E. Denny  <[email protected]>
+
+	Pacify "gcc -Wunused" for the input function from Flex.
+	Reported by Alex Rozenman.  This warning shows up with gcc-4.3.0
+	and later.
+	* src/scan-code.l: Add "%option noinput", which I cannot find in
+	the Flex manual, but which Flex has supported since at least as
+	far back as 2.5.4.  However, if any of our developers still use
+	Flex 2.5.4, they'll need to stop configuring with
+	--enable-gcc-warnings because "%option noinput" didn't work
+	correctly until Flex 2.5.6.
+	* src/scan-gram.l: Likewise.
+	* src/scan-skel.l: Likewise.
+
+2009-06-29  Akim Demaille  <[email protected]>
+
+	build: avoid concurrent extraction of calc++.
+	* examples/calc++/Makefile.am (calc.stamp): New.
+	Depend on it to create the sources of calc++ so that concurrent
+	builds don't launch several "extexi" in parallel.
+	Not only this is inefficient, this also builds incorrect sources
+	with several extractions mixed together.
+
+2009-06-25  Akim Demaille  <[email protected]>
+
+	hash: check insertion for memory exhaustion.
+	* src/uniqstr.c (uniqstr_new): New.
+
+2009-06-11  Akim Demaille  <[email protected]>
+
+	hash: check insertion for memory exhaustion.
+	* src/muscle-tab.c (muscle_insert, muscle_grow)
+	* src/state.c (state_hash_insert): Check the return value of
+	hash_insert.
+
+2009-06-10  Akim Demaille  <[email protected]>
+
+	gnulib: update.
+	* gnulib: Update to latest.
+	* lib/.cvsignore, lib/.gitignore, m4/.cvsignore,
+	* m4/.gitignore: Regen.
+	* src/symtab.c (symbol_from_uniqstr, semantic_type_from_uniqstr):
+	Call xalloc_die on hash_insert failures.
+	Requested by the new __warn_unused_result__ attribute of
+	hash_insert.
+
+2009-05-22  Joel E. Denny  <[email protected]>
+
+	* data/c++.m4: Update copyright year.
+
+2009-05-19  Joel E. Denny  <[email protected]>
+
+	Handle a trailing `:' in a user-supplied C++ namespace better.
+	* data/c++.m4 (b4_namespace_close): Don't let it be printed
+	among the closing braces here.  This fix might make the
+	generated code easier to debug, but otherwise it should be
+	insignificant because a trailing `:' is a C++ error already.
+
+2009-05-11  Akim Demaille  <[email protected]>
+
+	doc: use C++ headers.
+	* doc/bison.texinfo (Calc++ Scanner): Prefer C++ headers to C
+	headers.
+
+2009-05-01  Joel E. Denny  <[email protected]>
+
+	Declare %code to be a permanent feature.
+	* NEWS (2.4.2): Here.
+	* doc/bison.texinfo (Prologue Alternatives): Don't say it's
+	experimental.
+	(Decl Summary): Likewise.
+
+2009-04-14  Akim Demaille  <[email protected]>
+
+	doc: minor fixes.
+	* doc/bison.texinfo (Decl Summary): Fix entry about %debug.
+	(Table of Symbols): Remove duplicate entry for %debug.
+
+2009-04-06  Eric Blake  <[email protected]>
+
+	Work around autoconf 2.63b bug in testsuite.
+	* tests/output.at (AT_CHECK_OUTPUT_FILE_NAME): Avoid tripping
+	autoconf bug related to # in test.
+
 2009-04-06  Joel E. Denny  <[email protected]>

 	Fix options documentation.
@@ -4064,9 +4467,12 @@

 2006-09-15  Bob Rossi  <[email protected]>

+	Add support for push parsing.  Based on the original work of
+	Odd Arild Olsen <[email protected]>.
 	* data/Makefile.am (dist_pkgdata_DATA): Add push.c.
 	* data/c.m4 (YYPUSH): New.
 	(b4_push_if): New macro.  Use it instead of #ifdef YYPUSH.
+	* data/push.c: New file.
 	* src/getargs.c (push_parser): New var.
 	* src/getargs.h (push_parser): New declaration.
 	* src/output.c (prepare): Add macro insertion of `push_flag'.
@@ -21239,9 +21645,8 @@

 	-----

-	Copyright (C) 1987, 1988, 1991, 1992, 1993, 1994, 1995, 1996,
-	1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
-	2007, 2008, 2009 Free Software Foundation, Inc.
+	Copyright (C) 1987-1988, 1991-2010 Free Software Foundation,
+	Inc.

 	Copying and distribution of this file, with or without
 	modification, are permitted provided the copyright notice and this
@@ -210,9 +210,17 @@ causes it to be rejected by recent Gettext releases; please report
 these to the Translation Project.

 ** Update README
-Make sure the information in this file is current.  Most notably, make sure it
-recommends a version of GNU M4 that is compatible with the latest Bison
-sources.
+Make sure the information in README is current.  Most notably, make sure
+it recommends a version of GNU M4 that is compatible with the latest
+Bison sources.
+
+** Check copyright years.
+We update years in copyright statements throughout Bison once at the
+start of every year by running `make update-copyright'.  However, before
+a release, it's good to verify that it's actually been run.  Besides the
+copyright statement for each Bison file, check the copyright statements
+that the skeletons insert into generated parsers, and check all
+occurrences of PACKAGE_COPYRIGHT_YEAR in configure.ac.

 ** Update NEWS
 The version number, *and* the date of the release (including for
@@ -221,9 +229,6 @@ betas).
 ** Update ChangeLog
 Should have an entry similar to `Version 1.49b.'.

-** Update configure.ac
-Be sure PACKAGE_COPYRIGHT_YEAR is up-to-date.
-
 ** Tag the release
 Before Bison will build with the right version number, you must tag the release
 in git.  Do this after all other changes.  The command is similar to:
@@ -354,8 +359,7 @@ Push these changes.

 -----

-Copyright (C) 2002, 2003, 2004, 2005, 2007, 2008, 2009
-Free Software Foundation, Inc.
+Copyright (C) 2002-2005, 2007-2010 Free Software Foundation, Inc.

 This file is part of GNU Bison.

@@ -1,6 +1,5 @@
 ## Process this file with automake to produce Makefile.in -*-Makefile-*-
-## Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software
-## Foundation, Inc.
+## Copyright (C) 2001-2010 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
@@ -23,7 +22,7 @@ SUBDIRS = build-aux po runtime-po lib data src doc examples tests etc
 aclocaldir = @aclocaldir@
 aclocal_DATA = m4/bison-i18n.m4

-EXTRA_DIST = .prev-version .version cfg.mk maint.mk \
+EXTRA_DIST = .prev-version .version cfg.mk \
  OChangeLog PACKAGING \
  djgpp/Makefile.maint djgpp/README.in djgpp/config.bat \
  djgpp/config.sed djgpp/config.site djgpp/config_h.sed \
@@ -57,3 +56,12 @@ $(top_srcdir)/.version: configure
 	echo $(VERSION) > $@-t && mv $@-t $@
 dist-hook:
 	echo $(VERSION) > $(distdir)/.tarball-version
+
+.PHONY: update-b4-copyright update-package-copyright-year
+update-b4-copyright:
+	find data -type f                    \
+	  | grep -v -E '^data/bison.m4$$'    \
+	  | xargs $(build_aux)/$@
+	@echo 'warning: src/parse-gram.[hc] may need to be regenerated.'
+update-package-copyright-year:
+	$(build_aux)/$@ configure.ac
@@ -1,7 +1,91 @@
 Bison News
 ----------

-* Changes in version 2.4.2 (????-??-??):
+* Changes in version 2.4.1a (2010-01-22):
+
+** `%prec IDENTIFIER' requires IDENTIFIER to be defined separately.
+
+  POSIX specifies that an error be reported for any identifier that does
+  not appear on the LHS of a grammar rule and that is not defined by
+  %token, %left, %right, or %nonassoc.  Bison 2.3b and later lost this
+  error report for the case when an identifier appears only after a
+  %prec directive.  It is now restored.  However, for backward
+  compatibility with recent Bison releases, it is only a warning for
+  now.  In Bison 2.5 and later, it will return to being an error.
+
+** Detection of GNU M4 1.4.6 or newer during configure is improved.
+
+** Warnings from gcc's -Wundef option about undefined YYENABLE_NLS,
+   YYLTYPE_IS_TRIVIAL, and __STRICT_ANSI__ in C/C++ parsers are now
+   avoided.
+
+** %code is now a permanent feature.
+
+  A traditional Yacc prologue directive is written in the form:
+
+    %{CODE%}
+
+  To provide a more flexible alternative, Bison 2.3b introduced the
+  %code directive with the following forms for C/C++:
+
+    %code          {CODE}
+    %code requires {CODE}
+    %code provides {CODE}
+    %code top      {CODE}
+
+  These forms are now considered permanent features of Bison.  See the
+  %code entries in the section "Bison Declaration Summary" in the Bison
+  manual for a summary of their functionality.  See the section
+  "Prologue Alternatives" for a detailed discussion including the
+  advantages of %code over the traditional Yacc prologue directive.
+
+  Bison's Java feature as a whole including its current usage of %code
+  is still considered experimental.
+
+** YYFAIL is deprecated and will eventually be removed.
+
+  YYFAIL has existed for many years as an undocumented feature of
+  deterministic parsers in C generated by Bison.  Previously, it was
+  documented for Bison's experimental Java parsers.  YYFAIL is no longer
+  documented for Java parsers and is formally deprecated in both cases.
+  Users are strongly encouraged to migrate to YYERROR, which is
+  specified by POSIX.
+
+  Like YYERROR, you can invoke YYFAIL from a semantic action in order to
+  induce a syntax error.  The most obvious difference from YYERROR is
+  that YYFAIL will automatically invoke yyerror to report the syntax
+  error so that you don't have to.  However, there are several other
+  subtle differences between YYERROR and YYFAIL, and YYFAIL suffers from
+  inherent flaws when %error-verbose or `#define YYERROR_VERBOSE' is
+  used.  For a more detailed discussion, see:
+
+    http://lists.gnu.org/archive/html/bison-patches/2009-12/msg00024.html
+
+  The upcoming Bison 2.5 will remove YYFAIL from Java parsers, but
+  deterministic parsers in C will continue to implement it.  However,
+  because YYFAIL is already flawed, it seems futile to try to make new
+  Bison features compatible with it.  Thus, during parser generation,
+  Bison 2.5 will produce a warning whenever it discovers YYFAIL in a
+  rule action.  In a later release, YYFAIL will be disabled for
+  %error-verbose and `#define YYERROR_VERBOSE'.  Eventually, YYFAIL will
+  be removed altogether.
+
+  There exists at least one case where Bison 2.5's YYFAIL warning will
+  be a false positive.  Some projects add phony uses of YYFAIL and other
+  Bison-defined macros for the sole purpose of suppressing C
+  preprocessor warnings (from GCC cpp's -Wunused-macros, for example).
+  To avoid Bison's future warning, such YYFAIL uses can be moved to the
+  epilogue (that is, after the second `%%') in the Bison input file.  In
+  this release (2.4.1a), Bison already generates its own code to suppress
+  C preprocessor warnings for YYFAIL, so projects can remove their own
+  phony uses of YYFAIL if compatibility with Bison releases prior to
+  2.4.1a is not necessary.
+
+** Internationalization.
+
+  Fix a regression introduced in Bison 2.4: Under some circumstances,
+  message translations were not installed although supported by the
+  host system.

 * Changes in version 2.4.1 (2008-12-11):

@@ -1050,8 +1134,7 @@ End:

 -----

-Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
+Copyright (C) 1995-2010 Free Software Foundation, Inc.

 This file is part of Bison, the GNU Parser Generator.

@@ -36,7 +36,7 @@ to the bison package.

 -----

-Copyright (C) 2002, 2005 Free Software Foundation, Inc.
+Copyright (C) 2002, 2005, 2009-2010 Free Software Foundation, Inc.

 This file is part of Bison, the GNU Compiler Compiler.

@@ -1,31 +1,47 @@
 This package contains the GNU Bison parser generator.

-See the file INSTALL for generic compilation and installation instructions.
+* Installation
+** Build
+See the file INSTALL for generic compilation and installation
+instructions.

+Bison requires GNU m4 1.4.6 or later.  See:
+
+      ftp://ftp.gnu.org/gnu/m4/m4-1.4.6.tar.gz
+
+** Internationalization
+Bison supports two catalogues: one for Bison itself (i.e., for the
+maintainer-side parser generation), and one for the generated parsers
+(i.e., for the user-side parser execution).  The requirements between
+both differ: bison needs ngettext, the generated parsers do not.  To
+simplify the build system, neither are installed if ngettext is not
+supported, even if generated parsers could have been localized.  See
+http://lists.gnu.org/archive/html/bug-bison/2009-08/msg00006.html for
+more details.
+
+* Questions
 See the section FAQ in the documentation (doc/bison.info) for
 frequently asked questions.  The documentation is also available in
 PDF and HTML, provided you have a recent version of Texinfo installed:
 run "make pdf" or "make html".

-Bison requires GNU m4 1.4.6 or later.  See:
-
-ftp://ftp.gnu.org/gnu/m4/m4-1.4.6.tar.gz
-
-Bison can work with pre-1.4.6 distributions of GNU m4 if they are
-sufficiently patched, but if you encounter a bug with an older
-distribution and report a bug we will probably suggest that you
-upgrade to 1.4.6 as the first step in trying to fix it.
+If you have questions about using Bison and the documentation does
+not answer them, please send mail to <[email protected]>.

+* Bug reports
 Please send bug reports to <[email protected]>.  Please include the
 version number from `bison --version', and a complete, self-contained
 test case in each bug report.

-If you have questions about using Bison and the documentation does
-not answer them, please send mail to <[email protected]>.
+
+Local Variables:
+mode: outline
+End:

 -----

-Copyright (C) 1992, 1998, 1999, 2003, 2004, 2005, 2008 Free Software Foundation, Inc.
+Copyright (C) 1992, 1998-1999, 2003-2005, 2008-2010 Free Software
+Foundation, Inc.

 This file is part of Bison, the GNU Compiler Compiler.

@@ -12,7 +12,7 @@ the problems you encounter.

 -----

-Copyright (C) 2002, 2004 Free Software Foundation, Inc.
+Copyright (C) 2002, 2004, 2009-2010 Free Software Foundation, Inc.

 This file is part of GNU Bison.

@@ -14,6 +14,7 @@ Art Haas                  [email protected]
 Baron Schwartz            [email protected]
 Benoit Perrot             [email protected]
 Bert Deknuydt             [email protected]
+Bill Allombert            [email protected]
 Bob Rossi                 [email protected]
 Brandon Lucia             [email protected]
 Bruce Lilly               [email protected]
@@ -45,17 +46,20 @@ Jesse Thilo               [email protected]
 Jim Kent                  [email protected]
 Jim Meyering              [email protected]
 Joel E. Denny             [email protected]
+Jonathan Nieder           [email protected]
 Juan Manuel Guerrero      [email protected]
 Kees Zeelenberg           [email protected]
 Keith Browne              [email protected]
 Laurent Mascherpa         [email protected]
 Magnus Fromreide          [email protected]
 Marc Autret               [email protected]
+Martin Jacobs             [email protected]
 Martin Mokrejs            [email protected]
 Martin Nylin              [email protected]
 Matt Kraai                [email protected]
 Matt Rosing               [email protected]
 Michael Hayes             [email protected]
+Michael Raskin            [email protected]
 Mickael Labau             [email protected]
 Mike Castle               [email protected]
 Neil Booth                [email protected]
@@ -63,6 +67,7 @@ Nelson H. F. Beebe        [email protected]
 Nicolas Burrus            [email protected]
 Nicolas Tisserand         [email protected]
 Noah Friedman             [email protected]
+Odd Arild Olsen           [email protected]
 Oleg Smolsky              [email protected]
 Paolo Bonzini             [email protected]
 Pascal Bart               [email protected]
@@ -290,8 +290,7 @@ Equip the parser with a means to create the (visual) parse tree.

 -----

-Copyright (C) 2001, 2002, 2003, 2004, 2006 Free Software Foundation,
-Inc.
+Copyright (C) 2001-2004, 2006, 2009-2010 Free Software Foundation, Inc.

 This file is part of Bison, the GNU Compiler Compiler.

@@ -2,8 +2,7 @@

 # Bootstrap this package from checked-out sources.

-# Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009
-# Free Software Foundation, Inc.
+# Copyright (C) 2003-2010 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
@@ -42,20 +41,21 @@ Bootstrap this package from the checked-out sources.

 Options:
 --gnulib-srcdir=DIRNAME  Specify the local directory where gnulib
-			  sources reside.  Use this if you already
-			  have gnulib sources on your machine, and
-			  do not want to waste your bandwidth downloading
-			  them again.
+                          sources reside.  Use this if you already
+                          have gnulib sources on your machine, and
+                          do not want to waste your bandwidth downloading
+                          them again.
 --copy                   Copy files instead of creating symbolic links.
 --force                  Attempt to bootstrap even if the sources seem
-			  not to have been checked out.
+                          not to have been checked out.
 --skip-po                Do not download po files.
- --cvs-user=USERNAME      Set the username to use when checking out
-			  sources from the gnulib repository.

-If the file bootstrap.conf exists in the current working directory, its
+If the file $0.conf exists in the same directory as this script, its
 contents are read as shell variables to configure the bootstrap.

+For build prerequisites, environment variables like \$AUTOCONF and \$AMTAR
+are honored.
+
 Running without arguments will suffice in most cases.
 EOF
 }
@@ -71,6 +71,10 @@ gnulib_modules=
 # Any gnulib files needed that are not in modules.
 gnulib_files=

+# A function to be called after everything else in this script.
+# Override it via your own definition in bootstrap.conf.
+bootstrap_epilogue() { :; }
+
 # The command to download all .po files for a specified domain into
 # a specified directory.  Fill in the first %s is the domain name, and
 # the second with the destination directory.  Use rsync's -L and -r
@@ -81,9 +85,10 @@ po_download_command_format=\

 extract_package_name='
  /^AC_INIT(/{
-     /.*,.*,.*,/{
+     /.*,.*,.*, */{
       s///
       s/[][]//g
+       s/)$//
       p
       q
     }
@@ -99,16 +104,21 @@ package=`sed -n "$extract_package_name" configure.ac` || exit
 gnulib_name=lib$package

 build_aux=build-aux
+source_base=lib
+m4_base=m4
+doc_base=doc
+tests_base=tests
+
 # Extra files from gnulib, which override files from other sources.
 gnulib_extra_files="
-	$build_aux/install-sh
-	$build_aux/missing
-	$build_aux/mdate-sh
-	$build_aux/texinfo.tex
-	$build_aux/depcomp
-	$build_aux/config.guess
-	$build_aux/config.sub
-	doc/INSTALL
+        $build_aux/install-sh
+        $build_aux/missing
+        $build_aux/mdate-sh
+        $build_aux/texinfo.tex
+        $build_aux/depcomp
+        $build_aux/config.guess
+        $build_aux/config.sub
+        doc/INSTALL
 "

 # Additional gnulib-tool options to use.  Use "\newline" to break lines.
@@ -124,6 +134,9 @@ XGETTEXT_OPTIONS='\\\
 --flag=error:3:c-format --flag=error_at_line:5:c-format\\\
 '

+# Package bug report address for gettext files
+[email protected]
+
 # Files we don't want to import.
 excluded_files=

@@ -142,29 +155,37 @@ vc_ignore=auto

 # find_tool ENVVAR NAMES...
 # -------------------------
+# Search for a required program.  Use the value of ENVVAR, if set,
+# otherwise find the first of the NAMES that can be run (i.e.,
+# supports --version).  If found, set ENVVAR to the program name,
+# die otherwise.
 find_tool ()
 {
  # Find sha1sum, named gsha1sum on MacPorts.
  find_tool_envvar=$1
  shift
-  if eval test x"\$$find_tool_envvar" = x; then
+  find_tool_names=$@
+  eval "find_tool_res=\$$find_tool_envvar"
+  if test x"$find_tool_res" = x; then
    for i
    do
      if ($i --version </dev/null) >/dev/null 2>&1; then
-	find_tool_res=$i
-	break
+       find_tool_res=$i
+       break
      fi
    done
+  else
+    find_tool_error_prefix="\$$find_tool_envvar: "
  fi
  if test x"$find_tool_res" = x; then
-    echo >&2 "$0: $find_tool_name is required"
+    echo >&2 "$0: one of these is required: $find_tool_names"
    exit 1
  fi
  ($find_tool_res --version </dev/null) >/dev/null 2>&1 || {
-    echo >&2 "$0: cannot run $find_tool_res --version"
+    echo >&2 "$0: ${find_tool_error_prefix}cannot run $find_tool_res --version"
    exit 1
  }
-  eval "$find_tool_envvar=\"$find_tool_res\""
+  eval "$find_tool_envvar=\$find_tool_res"
  eval "export $find_tool_envvar"
 }

@@ -172,7 +193,13 @@ find_tool ()
 find_tool SHA1SUM sha1sum gsha1sum

 # Override the default configuration, if necessary.
-test -r bootstrap.conf && . ./bootstrap.conf
+# Make sure that bootstrap.conf is sourced from the current directory
+# if we were invoked as "sh bootstrap".
+case "$0" in
+  */*) test -r "$0.conf" && . "$0.conf" ;;
+  *) test -r "$0.conf" && . ./"$0.conf" ;;
+esac
+

 if test "$vc_ignore" = auto; then
  vc_ignore=
@@ -191,9 +218,7 @@ do
    usage
    exit;;
  --gnulib-srcdir=*)
-    GNULIB_SRCDIR=`expr "$option" : '--gnulib-srcdir=\(.*\)'`;;
-  --cvs-user=*)
-    CVS_USER=`expr "$option" : '--cvs-user=\(.*\)'`;;
+    GNULIB_SRCDIR=`expr "X$option" : 'X--gnulib-srcdir=\(.*\)'`;;
  --skip-po)
    SKIP_PO=t;;
  --force)
@@ -211,13 +236,13 @@ if test -n "$checkout_only_file" && test ! -r "$checkout_only_file"; then
  exit 1
 fi

-# If each line in $STR is not already on a line by itself in $FILE, insert it,
+# If $STR is not already on a line by itself in $FILE, insert it,
 # sorting the new contents of the file and replacing $FILE with the result.
 insert_sorted_if_absent() {
  file=$1
  str=$2
  test -f $file || touch $file
-  echo "$str" | sort -u - $file | cmp -s - $file \
+  echo "$str" | sort -u - $file | cmp - $file > /dev/null \
    || echo "$str" | sort -u - $file -o $file \
    || exit 1
 }
@@ -259,16 +284,113 @@ if test ! -d $build_aux; then
  done
 fi

-echo "$0: Bootstrapping from checked-out $package sources..."
+# Note this deviates from the version comparison in automake
+# in that it treats 1.5 < 1.5.0, and treats 1.4.4a < 1.4-p3a
+# but this should suffice as we won't be specifying old
+# version formats or redundant trailing .0 in bootstrap.conf.
+# If we did want full compatibility then we should probably
+# use m4_version_compare from autoconf.
+sort_ver() { # sort -V is not generally available
+  ver1="$1"
+  ver2="$2"

-cleanup_gnulib() {
-  status=$?
-  rm -fr gnulib
-  exit $status
+  # split on '.' and compare each component
+  i=1
+  while : ; do
+    p1=$(echo "$ver1" | cut -d. -f$i)
+    p2=$(echo "$ver2" | cut -d. -f$i)
+    if [ ! "$p1" ]; then
+      echo "$1 $2"
+      break
+    elif [ ! "$p2" ]; then
+      echo "$2 $1"
+      break
+    elif [ ! "$p1" = "$p2" ]; then
+      if [ "$p1" -gt "$p2" ] 2>/dev/null; then # numeric comparison
+        echo "$2 $1"
+      elif [ "$p2" -gt "$p1" ] 2>/dev/null; then # numeric comparison
+        echo "$1 $2"
+      else # numeric, then lexicographic comparison
+        lp=$(printf "$p1\n$p2\n" | LANG=C sort -n | tail -n1)
+        if [ "$lp" = "$p2" ]; then
+          echo "$1 $2"
+        else
+          echo "$2 $1"
+        fi
+      fi
+      break
+    fi
+    i=$(($i+1))
+  done
 }

-# See if we can use gnulib's git-merge-changelog merge driver.
+get_version() {
+  app=$1

+  $app --version >/dev/null 2>&1 || return 1
+
+  $app --version 2>&1 |
+  sed -n '# extract version within line
+          s/.*[v ]\{1,\}\([0-9]\{1,\}\.[.a-z0-9-]*\).*/\1/
+          t done
+
+          # extract version at start of line
+          s/^\([0-9]\{1,\}\.[.a-z0-9-]*\).*/\1/
+          t done
+
+          d
+
+          :done
+          #the following essentially does s/5.005/5.5/
+          s/\.0*\([1-9]\)/.\1/g
+          p
+          q'
+}
+
+check_versions() {
+  ret=0
+
+  while read app req_ver; do
+    # Honor $APP variables ($TAR, $AUTOCONF, etc.)
+    appvar=`echo $app | tr '[a-z]' '[A-Z]'`
+    test "$appvar" = TAR && appvar=AMTAR
+    eval "app=\${$appvar-$app}"
+    inst_ver=$(get_version $app)
+    if [ ! "$inst_ver" ]; then
+      echo "Error: '$app' not found" >&2
+      ret=1
+    elif [ ! "$req_ver" = "-" ]; then
+      latest_ver=$(sort_ver $req_ver $inst_ver | cut -d' ' -f2)
+      if [ ! "$latest_ver" = "$inst_ver" ]; then
+        echo "Error: '$app' version == $inst_ver is too old" >&2
+        echo "       '$app' version >= $req_ver is required" >&2
+        ret=1
+      fi
+    fi
+  done
+
+  return $ret
+}
+
+print_versions() {
+  echo "Program    Min_version"
+  echo "----------------------"
+  printf "$buildreq"
+  echo "----------------------"
+  # can't depend on column -t
+}
+
+if ! printf "$buildreq" | check_versions; then
+  test -f README-prereq &&
+  echo "See README-prereq for notes on obtaining these prerequisite programs:" >&2
+  echo
+  print_versions
+  exit 1
+fi
+
+echo "$0: Bootstrapping from checked-out $package sources..."
+
+# See if we can use gnulib's git-merge-changelog merge driver.
 if test -d .git && (git --version) >/dev/null 2>/dev/null ; then
  if git config merge.merge-changelog.driver >/dev/null ; then
    :
@@ -281,35 +403,52 @@ if test -d .git && (git --version) >/dev/null 2>/dev/null ; then
  fi
 fi

+
+cleanup_gnulib() {
+  status=$?
+  rm -fr gnulib
+  exit $status
+}
+
+git_modules_config () {
+  test -f .gitmodules && git config --file .gitmodules "$@"
+}
+
 # Get gnulib files.

 case ${GNULIB_SRCDIR--} in
 -)
-  if [ ! -d gnulib ]; then
+  if git_modules_config submodule.gnulib.url >/dev/null; then
    echo "$0: getting gnulib files..."
+    git submodule init || exit $?
+    git submodule update || exit $?

-    case ${CVS_AUTH-pserver} in
-    pserver)
-      CVS_PREFIX=':pserver:anonymous@';;
-    ssh)
-      CVS_PREFIX="$CVS_USER${CVS_USER+@}";;
-    *)
-      echo "$0: $CVS_AUTH: Unknown CVS access method" >&2
-      exit 1;;
-    esac
-
-    case $CVS_RSH in
-    '') CVS_RSH=ssh; export CVS_RSH;;
-    esac
+  elif [ ! -d gnulib ]; then
+    echo "$0: getting gnulib files..."

    trap cleanup_gnulib 1 2 13 15

-    cvs -z3 -q -d ${CVS_PREFIX}pserver.git.sv.gnu.org:/gnulib.git co -d gnulib HEAD ||
+    git clone --help|grep depth > /dev/null && shallow='--depth 2' || shallow=
+    git clone $shallow git://git.sv.gnu.org/gnulib ||
      cleanup_gnulib

    trap - 1 2 13 15
  fi
  GNULIB_SRCDIR=gnulib
+  ;;
+*)
+  # Redirect the gnulib submodule to the directory on the command line
+  # if possible.
+  if test -d "$GNULIB_SRCDIR"/.git && \
+        git_modules_config submodule.gnulib.url >/dev/null; then
+    git submodule init
+    GNULIB_SRCDIR=`cd $GNULIB_SRCDIR && pwd`
+    git_modules_config --replace-all submodule.gnulib.url $GNULIB_SRCDIR
+    echo "$0: getting gnulib files..."
+    git submodule update || exit $?
+    GNULIB_SRCDIR=gnulib
+  fi
+  ;;
 esac

 gnulib_tool=$GNULIB_SRCDIR/gnulib-tool
@@ -342,13 +481,20 @@ update_po_files() {
    && ls "$ref_po_dir"/*.po 2>/dev/null |
      sed 's|.*/||; s|\.po$||' > "$po_dir/LINGUAS"

-  for po in `cd $ref_po_dir && echo *.po|sed 's/\.po//g'`; do
-     new_po="$ref_po_dir/$po.po"
-     cksum_file="$ref_po_dir/$po.s1"
-     if ! "$SHA1SUM" -c --status "$cksum_file" < "$new_po" > /dev/null; then
-       echo "updated $po_dir/$po.po..."
-       cp "$new_po" "$po_dir/$po.po" && "$SHA1SUM" < "$new_po" > "$cksum_file"
-     fi
+  langs=`cd $ref_po_dir && echo *.po|sed 's/\.po//g'`
+  test "$langs" = '*' && langs=x
+  for po in $langs; do
+    case $po in x) continue;; esac
+    new_po="$ref_po_dir/$po.po"
+    cksum_file="$ref_po_dir/$po.s1"
+    if ! test -f "$cksum_file" ||
+        ! test -f "$po_dir/$po.po" ||
+        ! $SHA1SUM -c --status "$cksum_file" \
+            < "$new_po" > /dev/null; then
+      echo "updated $po_dir/$po.po..."
+      cp "$new_po" "$po_dir/$po.po" \
+          && $SHA1SUM < "$new_po" > "$cksum_file"
+    fi
  done
 }

@@ -395,37 +541,37 @@ symlink_to_dir()

    if $copy; then
      {
-	test ! -h "$dst" || {
-	  echo "$0: rm -f $dst" &&
-	  rm -f "$dst"
-	}
+        test ! -h "$dst" || {
+          echo "$0: rm -f $dst" &&
+          rm -f "$dst"
+        }
      } &&
      test -f "$dst" &&
      cmp -s "$src" "$dst" || {
-	echo "$0: cp -fp $src $dst" &&
-	cp -fp "$src" "$dst"
+        echo "$0: cp -fp $src $dst" &&
+        cp -fp "$src" "$dst"
      }
    else
      test -h "$dst" &&
      src_ls=`ls -diL "$src" 2>/dev/null` && set $src_ls && src_i=$1 &&
      dst_ls=`ls -diL "$dst" 2>/dev/null` && set $dst_ls && dst_i=$1 &&
      test "$src_i" = "$dst_i" || {
-	dot_dots=
-	case $src in
-	/*) ;;
-	*)
-	  case /$dst/ in
-	  *//* | */../* | */./* | /*/*/*/*/*/)
-	     echo >&2 "$0: invalid symlink calculation: $src -> $dst"
-	     exit 1;;
-	  /*/*/*/*/)	dot_dots=../../../;;
-	  /*/*/*/)	dot_dots=../../;;
-	  /*/*/)	dot_dots=../;;
-	  esac;;
-	esac
+        dot_dots=
+        case $src in
+        /*) ;;
+        *)
+          case /$dst/ in
+          *//* | */../* | */./* | /*/*/*/*/*/)
+             echo >&2 "$0: invalid symlink calculation: $src -> $dst"
+             exit 1;;
+          /*/*/*/*/)	dot_dots=../../../;;
+          /*/*/*/)	dot_dots=../../;;
+          /*/*/)	dot_dots=../;;
+          esac;;
+        esac

-	echo "$0: ln -fs $dot_dots$src $dst" &&
-	ln -fs "$dot_dots$src" "$dst"
+        echo "$0: ln -fs $dot_dots$src $dst" &&
+        ln -fs "$dot_dots$src" "$dst"
      }
    fi
  }
@@ -450,9 +596,13 @@ cp_mark_as_generated()

    if test -z "$c1"; then
      cmp -s "$cp_src" "$cp_dst" || {
-	echo "$0: cp -f $cp_src $cp_dst" &&
-	rm -f "$cp_dst" &&
-	sed "s!$bt_regex/!!g" "$cp_src" > "$cp_dst"
+        # Copy the file first to get proper permissions if it
+        # doesn't already exist.  Then overwrite the copy.
+        echo "$0: cp -f $cp_src $cp_dst" &&
+        rm -f "$cp_dst" &&
+        cp "$cp_src" "$cp_dst-t" &&
+        sed "s!$bt_regex/!!g" "$cp_src" > "$cp_dst-t" &&
+        mv -f "$cp_dst-t" "$cp_dst"
      }
    else
      check_dst_dir "$cp_dst"
@@ -460,15 +610,15 @@ cp_mark_as_generated()
      # doesn't already exist.  Then overwrite the copy.
      cp "$cp_src" "$cp_dst-t" &&
      (
-	echo "$c1-*- buffer-read-only: t -*- vi: set ro:$c2" &&
-	echo "${c1}DO NOT EDIT! GENERATED AUTOMATICALLY!$c2" &&
-	sed "s!$bt_regex/!!g" "$cp_src"
+        echo "$c1-*- buffer-read-only: t -*- vi: set ro:$c2" &&
+        echo "${c1}DO NOT EDIT! GENERATED AUTOMATICALLY!$c2" &&
+        sed "s!$bt_regex/!!g" "$cp_src"
      ) > $cp_dst-t &&
      if cmp -s "$cp_dst-t" "$cp_dst"; then
-	rm -f "$cp_dst-t"
+        rm -f "$cp_dst-t"
      else
-	echo "$0: cp $cp_src $cp_dst # with edits" &&
-	mv -f "$cp_dst-t" "$cp_dst"
+        echo "$0: cp $cp_src $cp_dst # with edits" &&
+        mv -f "$cp_dst-t" "$cp_dst"
      fi
    fi
  fi
@@ -480,9 +630,11 @@ version_controlled_file() {
  found=no
  if test -d CVS; then
    grep -F "/$file/" $dir/CVS/Entries 2>/dev/null |
-	     grep '^/[^/]*/[0-9]' > /dev/null && found=yes
+             grep '^/[^/]*/[0-9]' > /dev/null && found=yes
  elif test -d .git; then
-    git-rm -n "$dir/$file" > /dev/null 2>&1 && found=yes
+    git rm -n "$dir/$file" > /dev/null 2>&1 && found=yes
+  elif test -d .svn; then
+    svn log -r HEAD "$dir/$file" > /dev/null 2>&1 && found=yes
  else
    echo "$0: no version control for $dir/$file?" >&2
  fi
@@ -500,35 +652,35 @@ slurp() {
      esac
      test -d $1/$dir/$file && continue
      for excluded_file in $excluded_files; do
-	test "$dir/$file" = "$excluded_file" && continue 2
+        test "$dir/$file" = "$excluded_file" && continue 2
      done
      if test $file = Makefile.am; then
-	copied=$copied${sep}$gnulib_mk; sep=$nl
-	remove_intl='/^[^#].*\/intl/s/^/#/;'"s!$bt_regex/!!g"
-	sed "$remove_intl" $1/$dir/$file | cmp -s - $dir/$gnulib_mk || {
-	  echo "$0: Copying $1/$dir/$file to $dir/$gnulib_mk ..." &&
-	  rm -f $dir/$gnulib_mk &&
-	  sed "$remove_intl" $1/$dir/$file >$dir/$gnulib_mk
-	}
+        copied=$copied${sep}$gnulib_mk; sep=$nl
+        remove_intl='/^[^#].*\/intl/s/^/#/;'"s!$bt_regex/!!g"
+        sed "$remove_intl" $1/$dir/$file | cmp - $dir/$gnulib_mk > /dev/null || {
+          echo "$0: Copying $1/$dir/$file to $dir/$gnulib_mk ..." &&
+          rm -f $dir/$gnulib_mk &&
+          sed "$remove_intl" $1/$dir/$file >$dir/$gnulib_mk
+        }
      elif { test "${2+set}" = set && test -r $2/$dir/$file; } ||
-	   version_controlled_file $dir $file; then
-	echo "$0: $dir/$file overrides $1/$dir/$file"
+           version_controlled_file $dir $file; then
+        echo "$0: $dir/$file overrides $1/$dir/$file"
      else
-	copied=$copied$sep$file; sep=$nl
-	if test $file = gettext.m4; then
-	  echo "$0: patching m4/gettext.m4 to remove need for intl/* ..."
-	  rm -f $dir/$file
-	  sed '
-	    /^AC_DEFUN(\[AM_INTL_SUBDIR],/,/^]/c\
-	      AC_DEFUN([AM_INTL_SUBDIR], [
-	    /^AC_DEFUN(\[gt_INTL_SUBDIR_CORE],/,/^]/c\
-	      AC_DEFUN([gt_INTL_SUBDIR_CORE], [])
-	    $a\
-	      AC_DEFUN([gl_LOCK_EARLY], [])
-	  ' $1/$dir/$file >$dir/$file
-	else
-	  cp_mark_as_generated $1/$dir/$file $dir/$file
-	fi
+        copied=$copied$sep$file; sep=$nl
+        if test $file = gettext.m4; then
+          echo "$0: patching m4/gettext.m4 to remove need for intl/* ..."
+          rm -f $dir/$file
+          sed '
+            /^AC_DEFUN(\[AM_INTL_SUBDIR],/,/^]/c\
+              AC_DEFUN([AM_INTL_SUBDIR], [
+            /^AC_DEFUN(\[gt_INTL_SUBDIR_CORE],/,/^]/c\
+              AC_DEFUN([gt_INTL_SUBDIR_CORE], [])
+            $a\
+              AC_DEFUN([gl_LOCK_EARLY], [])
+          ' $1/$dir/$file >$dir/$file
+        else
+          cp_mark_as_generated $1/$dir/$file $dir/$file
+        fi
      fi || exit
    done

@@ -536,18 +688,18 @@ slurp() {
      test $dot_ig = x && continue
      ig=$dir/$dot_ig
      if test -n "$copied"; then
-	insert_vc_ignore $ig "$copied"
-	# If an ignored file name ends with _.h, then also add
-	# the name with just ".h".  Many gnulib headers are generated,
-	# e.g., stdint_.h -> stdint.h, dirent_.h ->..., etc.
-	# Likewise for .gperf -> .h, .y -> .c, and .sin -> .sed
-	f=`echo "$copied"|sed 's/_\.h$/.h/;s/\.sin$/.sed/;s/\.y$/.c/;s/\.gperf$/.h/'`
-	insert_vc_ignore $ig "$f"
+        insert_vc_ignore $ig "$copied"
+        # If an ignored file name ends with .in.h, then also add
+        # the name with just ".h".  Many gnulib headers are generated,
+        # e.g., stdint.in.h -> stdint.h, dirent.in.h ->..., etc.
+        # Likewise for .gperf -> .h, .y -> .c, and .sin -> .sed
+        f=`echo "$copied"|sed 's/\.in\.h$/.h/;s/\.sin$/.sed/;s/\.y$/.c/;s/\.gperf$/.h/'`
+        insert_vc_ignore $ig "$f"

-	# For files like sys_stat_.h and sys_time_.h, record as
-	# ignorable the directory we might eventually create: sys/.
-	f=`echo "$copied"|sed 's/sys_.*_\.h$/sys/'`
-	insert_vc_ignore $ig "$f"
+        # For files like sys_stat.in.h and sys_time.in.h, record as
+        # ignorable the directory we might eventually create: sys/.
+        f=`echo "$copied"|sed 's/sys_.*\.in\.h$/sys/'`
+        insert_vc_ignore $ig "$f"
      fi
    done
  done
@@ -564,13 +716,13 @@ gnulib_tool_options="\
 --import\
 --no-changelog\
 --aux-dir $bt/$build_aux\
- --doc-base $bt/doc\
+ --doc-base $bt/$doc_base\
 --lib $gnulib_name\
- --m4-base $bt/m4/\
- --source-base $bt/lib/\
- --tests-base $bt/tests\
+ --m4-base $bt/$m4_base/\
+ --source-base $bt/$source_base/\
+ --tests-base $bt/$tests_base\
 --local-dir $local_gl_dir\
-$gnulib_tool_option_extras\
+ $gnulib_tool_option_extras\
 "
 echo "$0: $gnulib_tool $gnulib_tool_options --import ..."
 $gnulib_tool $gnulib_tool_options --import $gnulib_modules &&
@@ -587,46 +739,50 @@ grep '^[	 ]*AM_GNU_GETTEXT_VERSION(' configure.ac >/dev/null || \
    with_gettext=no

 if test $with_gettext = yes; then
-  echo "$0: (cd $bt2; autopoint) ..."
+  echo "$0: (cd $bt2; ${AUTOPOINT-autopoint}) ..."
  cp configure.ac $bt2 &&
-  (cd $bt2 && autopoint && rm configure.ac) &&
+  (cd $bt2 && ${AUTOPOINT-autopoint} && rm configure.ac) &&
  slurp $bt2 $bt || exit
-
-  rm -fr $bt $bt2 || exit
 fi
+rm -fr $bt $bt2 || exit

-# Coreutils is unusual in that it generates some of its test-related
-# Makefile.am files.  That must be done before invoking automake.
-mam_template=tests/Makefile.am.in
-if test -f $mam_template; then
-  PERL=perl
-  for tool in cut head join pr sort tac tail test tr uniq wc; do
-    m=tests/$tool/Makefile.am
-    t=${m}t
-    rm -f $m $t
-    sed -n '1,/^##test-files-begin/p' $mam_template > $t
-    echo "x = $tool" >> $t
-    srcdir=tests/$tool
-    $PERL -I$srcdir -w -- tests/mk-script $srcdir --list >> $t
-    sed -n '/^##test-files-end/,$p' $mam_template >> $t
-    chmod -w $t
-    mv $t $m
-  done
-fi
+# Remove any dangling symlink matching "*.m4" or "*.[ch]" in some
+# gnulib-populated directories.  Such .m4 files would cause aclocal to fail.
+# The following requires GNU find 4.2.3 or newer.  Considering the usual
+# portability constraints of this script, that may seem a very demanding
+# requirement, but it should be ok.  Ignore any failure, which is fine,
+# since this is only a convenience to help developers avoid the relatively
+# unusual case in which a symlinked-to .m4 file is git-removed from gnulib
+# between successive runs of this script.
+find "$m4_base" "$source_base" \
+  -depth \( -name '*.m4' -o -name '*.[ch]' \) \
+  -type l -xtype l -delete > /dev/null 2>&1

 # Reconfigure, getting other files.

+# Skip autoheader if it's not needed.
+grep -E '^[	 ]*AC_CONFIG_HEADERS?\>' configure.ac >/dev/null ||
+  AUTOHEADER=true
+
 for command in \
  libtool \
-  'aclocal --force -I m4' \
-  'autoconf --force' \
-  'autoheader --force' \
-  'automake --add-missing --copy --force-missing';
+  "${ACLOCAL-aclocal} --force -I m4" \
+  "${AUTOCONF-autoconf} --force" \
+  "${AUTOHEADER-autoheader} --force" \
+  "${AUTOMAKE-automake} --add-missing --copy --force-missing"
 do
  if test "$command" = libtool; then
-    grep '^[	 ]*AM_PROG_LIBTOOL\>' configure.ac >/dev/null ||
-      continue
-    command='libtoolize -c -f'
+    use_libtool=0
+    # We'd like to use grep -E, to see if any of LT_INIT,
+    # AC_PROG_LIBTOOL, AM_PROG_LIBTOOL is used in configure.ac,
+    # but that's not portable enough (e.g., for Solaris).
+    grep '^[	 ]*A[CM]_PROG_LIBTOOL' configure.ac >/dev/null \
+      && use_libtool=1
+    grep '^[	 ]*LT_INIT' configure.ac >/dev/null \
+      && use_libtool=1
+    test $use_libtool = 0 \
+      && continue
+    command="${LIBTOOLIZE-libtoolize} -c -f"
  fi
  echo "$0: $command ..."
  $command || exit
@@ -649,11 +805,11 @@ if test $with_gettext = yes; then
  rm -f po/Makevars
  sed '
    /^EXTRA_LOCALE_CATEGORIES *=/s/=.*/= '"$EXTRA_LOCALE_CATEGORIES"'/
-    /^MSGID_BUGS_ADDRESS *=/s/=.*/= bug-'"$package"'@gnu.org/
+    /^MSGID_BUGS_ADDRESS *=/s/=.*/= '"$MSGID_BUGS_ADDRESS"'/
    /^XGETTEXT_OPTIONS *=/{
      s/$/ \\/
      a\
-	  '"$XGETTEXT_OPTIONS"' $${end_of_xgettext_options+}
+          '"$XGETTEXT_OPTIONS"' $${end_of_xgettext_options+}
    }
  ' po/Makevars.template >po/Makevars

@@ -665,9 +821,9 @@ if test $with_gettext = yes; then
      /^subdir *=.*/s/=.*/= runtime-po/
      /^MSGID_BUGS_ADDRESS *=/s/=.*/= bug-'"$package"'@gnu.org/
      /^XGETTEXT_OPTIONS *=/{
-	s/$/ \\/
-	a\
-	    '"$XGETTEXT_OPTIONS_RUNTIME"' $${end_of_xgettext_options+}
+        s/$/ \\/
+        a\
+            '"$XGETTEXT_OPTIONS_RUNTIME"' $${end_of_xgettext_options+}
      }
    ' <po/Makevars.template >runtime-po/Makevars

@@ -676,4 +832,10 @@ if test $with_gettext = yes; then
  fi
 fi

+bootstrap_epilogue
+
 echo "$0: done.  Now you can run './configure'."
+
+# Local Variables:
+# indent-tabs-mode: nil
+# End:
@@ -1,6 +1,6 @@
 # Bootstrap configuration.

-# Copyright (C) 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
+# Copyright (C) 2006-2010 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
@@ -17,12 +17,12 @@

 # gnulib modules used by this package.
 gnulib_modules='
-  announce-gen argmatch config-h c-strcase configmake dirname error
-  extensions fopen-safer gendocs getopt gettext git-version-gen
-  gnumakefile hash inttypes javacomp-script javaexec-script malloc
-  mbswidth obstack quote quotearg stdbool stpcpy strerror strtoul
-  strverscmp unistd unistd-safer unlocked-io unsetenv verify warnings
-  xalloc xalloc-die xstrndup
+  announce-gen argmatch assert config-h c-strcase configmake dirname
+  error extensions fopen-safer gendocs getopt-gnu gettext
+  git-version-gen hash inttypes javacomp-script javaexec-script
+  maintainer-makefile malloc mbswidth obstack quote quotearg stdbool
+  stpcpy strerror strtoul strverscmp unistd unistd-safer unlocked-io
+  update-copyright unsetenv verify warnings xalloc xalloc-die xstrndup
 '

 # Additional xgettext options to use.  Use "\\\newline" to break lines.
@@ -1,6 +1,7 @@
 Makefile
 Makefile.in
 announce-gen
+arg-nonnull.h
 compile
 config.guess
 config.rpath
@@ -15,4 +16,8 @@ link-warning.h
 mdate-sh
 missing
 texinfo.tex
+update-copyright
+useless-if-before-free
+vc-list-files
+warn-on-use.h
 ylwrap
@@ -1,6 +1,7 @@
 /Makefile
 /Makefile.in
 /announce-gen
+/arg-nonnull.h
 /compile
 /config.guess
 /config.rpath
@@ -15,4 +16,8 @@
 /mdate-sh
 /missing
 /texinfo.tex
+/update-copyright
+/useless-if-before-free
+/vc-list-files
+/warn-on-use.h
 /ylwrap
@@ -1,2 +1,2 @@
 ## Process this file with automake to produce Makefile.in -*-Makefile-*-
-EXTRA_DIST = prev-version.txt cross-options.pl
+EXTRA_DIST = prev-version.txt cross-options.pl update-b4-copyright
@@ -0,0 +1,152 @@
+#!/usr/bin/perl -0777 -pi
+
+# Update b4_copyright invocations or b4_copyright_years definitions to
+# include the current year.
+
+# Copyright (C) 2009-2010 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, 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/>.
+
+use strict;
+use warnings;
+
+my $margin = 72;
+
+my $this_year = $ENV{UPDATE_COPYRIGHT_YEAR};
+if (!$this_year || $this_year !~ m/^\d{4}$/)
+  {
+    my ($sec, $min, $hour, $mday, $month, $year) = localtime (time ());
+    $this_year = $year + 1900;
+  }
+my $old_re = <<'EOF'
+  (
+    (?:^|\n)
+    #BEFORE
+    (?:
+      b4_copyright\(\[[^][]*]
+      | m4_(?:push|pop)def\(\[b4_copyright_years]
+    )
+    #AFTER
+  )
+  (?:
+    ,\s*
+    (
+      \[\s* (?:\d{4}(?:,\s*|-))* (\d{4}) \s*]
+    )
+  )?
+  \)
+EOF
+  ;
+
+while (/($old_re)/gx)
+  {
+    my $start = pos() - length ($1);
+    my $b4_copyright_line = $2;
+    my $year_lines = $3;
+    my $final_year = $4;
+    $year_lines .= ')';
+
+    # If there was a second argument, it contains years, so update them.
+    if ($final_year)
+      {
+        $b4_copyright_line .= ',';
+        if ($final_year != $this_year)
+          {
+            # Update the year.
+            $year_lines =~ s/$final_year/$final_year, $this_year/;
+          }
+
+        # Normalize all whitespace.
+        $year_lines =~ s/\s+/ /g;
+
+        # Put spaces after commas.
+        $year_lines =~ s/, ?/, /g;
+
+        # Compress to intervals.
+        $year_lines =~
+          s/
+            (\d{4})
+            (?:
+              (,\ |-)
+              ((??{
+                if    ($2 eq '-') { '\d{4}'; }
+                elsif (!$3)       { $1 + 1;  }
+                else              { $3 + 1;  }
+              }))
+            )+
+          /$1-$3/gx;
+
+        # Format within margin.
+        my $year_lines_new;
+        my $indent = index ($b4_copyright_line, '[');
+        --$indent if ($b4_copyright_line =~ m/^\n/);
+        while (length $year_lines)
+          {
+            my $text_margin = $margin - $indent;
+            if (($year_lines =~ s/^(.{1,$text_margin})(?: |$)//)
+                || ($year_lines =~ s/^([\S]+)(?: |$)//))
+              {
+                my $line = "\n" . (' 'x$indent) . $1;
+                ++$indent if (!$year_lines_new);
+                $year_lines_new .= $line;
+              }
+            else
+              {
+                # Should be unreachable, but we don't want an infinite
+                # loop if it can be reached.
+                die;
+              }
+          }
+
+        # Replace the old invocation.  Should never die.
+        die if (!s/$old_re\G/$b4_copyright_line$year_lines_new/x);
+
+        # Prepare for the next search.
+        pos () = $start + length ("$b4_copyright_line$year_lines_new");
+      }
+  }
+
+while (/(\bb4_copyright\()/g)
+  {
+    my $start = pos () - length ($1);
+    my $end = pos ();
+    my $re = $old_re;
+    pos () = $start;
+    $re =~ s/\#BEFORE/\\G/;
+    if (!/$re/x)
+      {
+        my $line = (substr ($_, 0, $start) =~ s/\n/\n/g) + 1;
+        print STDERR
+          "$ARGV:$line: warning: failed to update a b4_copyright\n";
+      }
+    pos () = $end;
+  }
+
+while (/(\[b4_copyright_years])/g)
+  {
+    my $start = pos () - length ($1);
+    my $end = pos ();
+    my $re = $old_re;
+    $re =~ s/\#AFTER/\\G/;
+    if (!/$re/x)
+      {
+        # The substr operation blows away pos (), so restoring pos ()
+        # at the end is necessary.
+        my $line = (substr ($_, 0, $start) =~ s/\n/\n/g) + 1;
+        print STDERR
+          "$ARGV:$line: warning: failed to update a"
+          . " b4_copyright_years\n";
+      }
+    pos () = $end;
+  }
@@ -0,0 +1,49 @@
+#!/usr/bin/perl -0777 -pi
+
+# In configure.ac, update PACKAGE_COPYRIGHT_YEAR to the current year.
+
+# Copyright (C) 2010 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, 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/>.
+
+use strict;
+use warnings;
+
+my $this_year = $ENV{UPDATE_COPYRIGHT_YEAR};
+if (!$this_year || $this_year !~ m/^\d{4}$/)
+  {
+    my ($sec, $min, $hour, $mday, $month, $year) = localtime (time ());
+    $this_year = $year + 1900;
+  }
+my $old_re = <<'EOF'
+  (
+    MACRO\(
+    \[PACKAGE_COPYRIGHT_YEAR],
+    \s*\[
+  )
+  (\d{4})
+  (?=])
+EOF
+  ;
+foreach my $macro ("AC_DEFINE", "AC_SUBST")
+  {
+    my $this_old_re = $old_re;
+    $this_old_re =~ s/MACRO/$macro/;
+    if (!s/$this_old_re/$1$this_year/x)
+      {
+        print STDERR
+          "$ARGV: warning: failed to update PACKAGE_COPYRIGHT_YEAR in"
+          . " $macro.\n";
+      }
+  }
@@ -1,5 +1,5 @@
 # Customize maint.mk                           -*- makefile -*-
-# Copyright (C) 2008 Free Software Foundation, Inc.
+# Copyright (C) 2008-2010 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
@@ -39,4 +39,10 @@ local-checks-to-skip = changelog-check

 # The local directory containing the checked-out copy of gnulib used in
 # this release.  Used solely to get a date for the "announcement" target.
-gnulib_dir = $(srcdir)/../../gnulib
+gnulib_dir = $(srcdir)/gnulib
+
+bootstrap-tools = autoconf,automake,flex,gnulib
+
+update-copyright: update-b4-copyright update-package-copyright-year
+update-copyright-env = \
+  UPDATE_COPYRIGHT_FORCE=1 UPDATE_COPYRIGHT_USE_INTERVALS=1
@@ -1,7 +1,6 @@
 # Configure template for GNU Bison.                   -*-Autoconf-*-
 #
-# Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
-# Free Software Foundation, Inc.
+# Copyright (C) 2001-2010 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
@@ -22,19 +21,24 @@ AC_PREREQ(2.61)
 AC_INIT([GNU Bison],
        m4_esyscmd([build-aux/git-version-gen .tarball-version]),
        [[email protected]])
-AC_DEFINE([PACKAGE_COPYRIGHT_YEAR], [2008],
+AC_DEFINE([PACKAGE_COPYRIGHT_YEAR], [2010],
          [The copyright year for this package])
-AC_SUBST([PACKAGE_COPYRIGHT_YEAR], [2008])
+AC_SUBST([PACKAGE_COPYRIGHT_YEAR], [2010])

 AC_CONFIG_AUX_DIR([build-aux])
 AC_CONFIG_MACRO_DIR([m4])

-# We don't have a file m4/Makefile.am, so we need Automake 1.8 or later.
+# Automake 1.10.3 and 1.11.1 fix a security flaw discussed here:
+#
+#   http://thread.gmane.org/gmane.comp.sysutils.autotools.announce/131
+#
+# To avoid 1.11, we make 1.11.1 the minimum version.
+#
 # We want gnits strictness only when rolling a formal release so that we can,
 # for example, run make dist at other times without being required to add a
 # bogus NEWS entry.
-AM_INIT_AUTOMAKE([1.8 dist-bzip2]
-                 m4_bmatch(m4_defn([AC_PACKAGE_VERSION]), [-], [gnu], [gnits]))
+AM_INIT_AUTOMAKE([1.11.1 dist-bzip2]
+                 m4_bmatch(m4_defn([AC_PACKAGE_VERSION]), [-], [gnu], [gnu]))
 AC_CONFIG_HEADERS([lib/config.h:lib/config.hin])

 # Checks for the compiler.
@@ -68,6 +72,12 @@ if test "${enableval}" = yes; then
  gl_WARN_ADD([-Wshadow])
  gl_WARN_ADD([-Wstrict-prototypes])
  AC_SUBST([WARN_CFLAGS])
+  # Warnings for the test suite only.
+  gl_WARN_ADD([-Wundef], [WARN_CFLAGS_TEST])
+  WARN_CXXFLAGS_TEST="$WARN_CXXFLAGS $WARN_CFLAGS_TEST"
+  WARN_CFLAGS_TEST="$WARN_CFLAGS $WARN_CFLAGS_TEST"
+  AC_SUBST([WARN_CXXFLAGS_TEST])
+  AC_SUBST([WARN_CFLAGS_TEST])
  AC_DEFINE([lint], 1, [Define to 1 if the compiler is checking for lint.])
 fi

@@ -94,6 +104,8 @@ AC_PROG_YACC
 AC_PROG_RANLIB
 AC_PROG_GNU_M4
 AC_DEFINE_UNQUOTED([M4], ["$M4"], [Define to the GNU M4 executable name.])
+AC_DEFINE_UNQUOTED([M4_GNU_OPTION], ["$M4_GNU"], [Define to "-g" if GNU M4
+supports -g, otherwise to "".])
 AM_MISSING_PROG([HELP2MAN], [help2man])
 AC_PATH_PROG([XSLTPROC], [xsltproc])
 AC_SUBST([XSLTPROC])
@@ -116,7 +128,7 @@ BISON_PREREQ_TIMEVAR

 # Gettext.
 # We've never tested with gettext versions before 0.15, so play it safe.
-AM_GNU_GETTEXT([external], [need-formatstring-macros])
+AM_GNU_GETTEXT([external], [need-ngettext])
 AM_GNU_GETTEXT_VERSION([0.15])
 BISON_I18N

@@ -1,4 +1,4 @@
-## Copyright (C) 2002, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+## Copyright (C) 2002, 2005-2010 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
@@ -52,7 +52,7 @@ into various formats.

 -----

-Copyright (C) 2002, 2008 Free Software Foundation, Inc.
+Copyright (C) 2002, 2008-2010 Free Software Foundation, Inc.

 This file is part of GNU Bison.

@@ -1,8 +1,7 @@
                                                            -*- Autoconf -*-

 # Language-independent M4 Macros for Bison.
-# Copyright (C) 2002, 2004, 2005, 2006, 2007, 2008, 2009 Free Software
-# Foundation, Inc.
+# Copyright (C) 2002, 2004-2010 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
@@ -1,7 +1,7 @@
                                                            -*- Autoconf -*-

 # C++ skeleton dispatching for Bison.
-# Copyright (C) 2006, 2007 Free Software Foundation, Inc.
+# Copyright (C) 2006-2007, 2009-2010 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
@@ -2,8 +2,7 @@

 # C++ skeleton for Bison

-# Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation,
-# Inc.
+# Copyright (C) 2002-2010 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
@@ -74,7 +73,7 @@ m4_define([b4_namespace_open],

 m4_define([b4_namespace_close],
 [b4_user_code([b4_percent_define_get_syncline([[namespace]])
-m4_bpatsubst(m4_dquote(m4_bpatsubst(m4_dquote(b4_namespace_ref),
+m4_bpatsubst(m4_dquote(m4_bpatsubst(m4_dquote(b4_namespace_ref[ ]),
                                    [^\(.\)[	 ]*\(::\)?\([^][:]\|:[^][:]\)*],
                                    [\1])),
             [::\([^][:]\|:[^][:]\)*], [} ])[} // ]b4_namespace_ref])])
@@ -1,7 +1,7 @@
                                                            -*- Autoconf -*-

 # C skeleton dispatching for Bison.
-# Copyright (C) 2006, 2007 Free Software Foundation, Inc.
+# Copyright (C) 2006-2007, 2009-2010 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
@@ -1,8 +1,7 @@
                                                            -*- Autoconf -*-

 # C M4 Macros for Bison.
-# Copyright (C) 2002, 2004, 2005, 2006, 2007, 2008 Free Software
-# Foundation, Inc.
+# Copyright (C) 2002, 2004-2010 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
@@ -1,8 +1,7 @@
                                                                    -*- C -*-

 # GLR skeleton for Bison
-# Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software
-# Foundation, Inc.
+# Copyright (C) 2002-2010 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
@@ -150,7 +149,7 @@ m4_changecom()
 m4_divert_push(0)dnl
@output(b4_parser_file_name@)@
 b4_copyright([Skeleton implementation for Bison GLR parsers in C],
-  [2002, 2003, 2004, 2005, 2006])
+             [2002-2006, 2009-2010])
 [
 /* C GLR parser skeleton written by Paul Hilfinger.  */

@@ -248,7 +247,7 @@ b4_percent_code_get[]dnl
 #include <string.h>

 #ifndef YY_
-# if YYENABLE_NLS
+# if defined YYENABLE_NLS && YYENABLE_NLS
 #  if ENABLE_NLS
 #   include <libintl.h> /* INFRINGES ON USER NAME SPACE */
 #   define YY_(msgid) dgettext ("bison-runtime", msgid)
@@ -310,7 +309,8 @@ b4_percent_code_get[]dnl
 #ifndef __attribute__
 /* This feature is available in gcc versions 2.5 and later.  */
 # if (! defined __GNUC__ || __GNUC__ < 2 \
-      || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__)
+      || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) \
+      || (defined __STRICT_ANSI__ && __STRICT_ANSI__))
 #  define __attribute__(Spec) /* empty */
 # endif
 #endif
@@ -2323,7 +2323,7 @@ yyrecoverSyntaxError (yyGLRStack* yystackp]b4_user_formals[)
  yychar = YYEMPTY;
  yylval = yyval_default;
 ]b4_locations_if([
-#if YYLTYPE_IS_TRIVIAL
+#if defined YYLTYPE_IS_TRIVIAL && YYLTYPE_IS_TRIVIAL
  yylloc.first_line   = yylloc.last_line   = ]b4_location_initial_line[;
  yylloc.first_column = yylloc.last_column = ]b4_location_initial_column[;
 #endif
@@ -2639,7 +2639,7 @@ m4_if(b4_skeleton, ["glr.c"],
 [b4_defines_if(
 [@output(b4_spec_defines_file@)@
 b4_copyright([Skeleton interface for Bison GLR parsers in C],
-  [2002, 2003, 2004, 2005, 2006])
+             [2002-2006, 2009-2010])

 b4_shared_declarations

@@ -1,8 +1,7 @@
                                                                    -*- C -*-

 # C++ GLR skeleton for Bison
-# Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation,
-# Inc.
+# Copyright (C) 2002-2010 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
@@ -219,7 +218,7 @@ m4_popdef([b4_parse_param])
 m4_divert_push(0)
@output(b4_spec_defines_file@)@
 b4_copyright([Skeleton interface for Bison GLR parsers in C++],
-  [2002, 2003, 2004, 2005, 2006])[
+             [2002-2006, 2009-2010])[

 /* C++ GLR parser skeleton written by Akim Demaille.  */

@@ -1,7 +1,7 @@
                                                            -*- Autoconf -*-

 # Java skeleton dispatching for Bison.
-# Copyright (C) 2007 Free Software Foundation, Inc.
+# Copyright (C) 2007, 2009-2010 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
@@ -2,7 +2,7 @@

 # Java language support for Bison

-# Copyright (C) 2007, 2008 Free Software Foundation, Inc.
+# Copyright (C) 2007-2010 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
@@ -1,7 +1,6 @@
 # C++ skeleton for Bison

-# Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008
-# Free Software Foundation, Inc.
+# Copyright (C) 2002-2010 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
@@ -35,7 +34,7 @@ m4_divert_push(0)dnl
 b4_defines_if(
 [@output(b4_spec_defines_file@)@
 b4_copyright([Skeleton interface for Bison LALR(1) parsers in C++],
-             [2002, 2003, 2004, 2005, 2006, 2007, 2008])
+             [2002-2010])
 dnl FIXME: This is wrong, we want computed header guards.
 [
 /* C++ LALR(1) parser skeleton written by Akim Demaille.  */
@@ -300,7 +299,7 @@ b4_percent_code_get([[provides]])[]dnl
 ])dnl
@output(b4_parser_file_name@)@
 b4_copyright([Skeleton implementation for Bison LALR(1) parsers in C++],
-             [2002, 2003, 2004, 2005, 2006, 2007, 2008])
+             [2002-2010])
 b4_percent_code_get([[top]])[]dnl
 m4_if(b4_prefix, [yy], [],
 [
@@ -318,7 +317,7 @@ b4_defines_if([[
 b4_percent_code_get[]dnl

 [#ifndef YY_
-# if YYENABLE_NLS
+# if defined YYENABLE_NLS && YYENABLE_NLS
 #  if ENABLE_NLS
 #   include <libintl.h> /* FIXME: INFRINGES ON USER NAME SPACE */
 #   define YY_(msgid) dgettext ("bison-runtime", msgid)
@@ -1057,7 +1056,7 @@ b4_error_verbose_if([, int tok])[)
 dnl
@output(b4_dir_prefix[]stack.hh@)@
 b4_copyright([Stack handling for Bison parsers in C++],
-             [2002, 2003, 2004, 2005, 2006, 2007, 2008])[
+             [2002-2010])[

 #ifndef BISON_STACK_HH
 # define BISON_STACK_HH
@@ -1,6 +1,6 @@
 # Java skeleton for Bison -*- autoconf -*-

-# Copyright (C) 2007, 2008 Free Software Foundation, Inc.
+# Copyright (C) 2007-2010 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
@@ -25,7 +25,7 @@ m4_ifval(m4_defn([b4_symbol_destructors]),
 m4_divert_push(0)dnl
@output(b4_parser_file_name@)@
 b4_copyright([Skeleton implementation for Bison LALR(1) parsers in Java],
-  [2007, 2008])
+             [2007-2010])

 b4_percent_define_ifdef([package], [package b4_percent_define_get([package]);
 ])[/* First part of user declarations.  */
@@ -310,7 +310,8 @@ b4_lexer_if([[

  /**
   * Returned by a Bison action in order to print an error message and start
-   * error recovery.  */
+   * error recovery.  Formally deprecated in Bison 2.4.2's NEWS entry, where
+   * a plan to phase it out is discussed.  */
  public static final int YYFAIL = 3;

  private static final int YYNEWSTATE = 4;
@@ -1,7 +1,6 @@
 # C++ skeleton for Bison

-# Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2009
-# Free Software Foundation, Inc.
+# Copyright (C) 2002-2007, 2009-2010 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
@@ -21,7 +20,7 @@ m4_changecom()
 m4_divert_push(0)dnl
@output(b4_dir_prefix[]position.hh@)@
 b4_copyright([Positions for Bison parsers in C++],
-             [2002, 2003, 2004, 2005, 2006, 2007, 2009])[
+             [2002-2007, 2009-2010])[

 /**
 ** \file position.hh
@@ -146,7 +145,7 @@ b4_copyright([Positions for Bison parsers in C++],
 #endif // not BISON_POSITION_HH]
@output(b4_dir_prefix[]location.hh@)@
 b4_copyright([Locations for Bison parsers in C++],
-             [2002, 2003, 2004, 2005, 2006, 2007, 2009])[
+             [2002-2007, 2009-2010])[

 /**
 ** \file location.hh
@@ -3,7 +3,7 @@
 <!--
    bison.xsl - common templates for Bison XSLT.

-    Copyright (C) 2007, 2008 Free Software Foundation, Inc.
+    Copyright (C) 2007-2010 Free Software Foundation, Inc.

    This file is part of Bison, the GNU Compiler Compiler.

@@ -3,7 +3,7 @@
 <!--
    xml2dot.xsl - transform Bison XML Report into DOT.

-    Copyright (C) 2007, 2008 Free Software Foundation, Inc.
+    Copyright (C) 2007-2010 Free Software Foundation, Inc.

    This file is part of Bison, the GNU Compiler Compiler.

@@ -3,7 +3,7 @@
 <!--
    xml2text.xsl - transform Bison XML Report into plain text.

-    Copyright (C) 2007, 2008 Free Software Foundation, Inc.
+    Copyright (C) 2007-2010 Free Software Foundation, Inc.

    This file is part of Bison, the GNU Compiler Compiler.

@@ -3,7 +3,7 @@
 <!--
    xml2html.xsl - transform Bison XML Report into XHTML.

-    Copyright (C) 2007, 2008 Free Software Foundation, Inc.
+    Copyright (C) 2007-2010 Free Software Foundation, Inc.

    This file is part of Bison, the GNU Compiler Compiler.

@@ -2,8 +2,8 @@

 # Yacc compatible skeleton for Bison

-# Copyright (C) 1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
-# 2007, 2008 Free Software Foundation, Inc.
+# Copyright (C) 1984, 1989-1990, 2000-2010 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
@@ -154,8 +154,8 @@ m4_define([b4_rhs_location],
 m4_changecom()
 m4_divert_push(0)dnl
@output(b4_parser_file_name@)@
-b4_copyright([Skeleton implementation for Bison's Yacc-like parsers in C],dnl '
-  [1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2006])[
+b4_copyright([Skeleton implementation for Bison's Yacc-like parsers in C],
+             [1984, 1989-1990, 2000-2006, 2009-2010])[

 /* C LALR(1) parser skeleton written by Richard Stallman, by
   simplifying the original so-called "semantic" parser.  */
@@ -310,7 +310,7 @@ typedef short int yytype_int16;
 #define YYSIZE_MAXIMUM ((YYSIZE_T) -1)

 #ifndef YY_
-# if YYENABLE_NLS
+# if defined YYENABLE_NLS && YYENABLE_NLS
 #  if ENABLE_NLS
 #   include <libintl.h> /* INFRINGES ON USER NAME SPACE */
 #   define YY_(msgid) dgettext ("bison-runtime", msgid)
@@ -609,9 +609,18 @@ static const ]b4_int_type_for([b4_stos])[ yystos[] =

 /* Like YYERROR except do call yyerror.  This remains here temporarily
   to ease the transition to the new meaning of YYERROR, for GCC.
-   Once GCC version 2 has supplanted version 1, this can go.  */
+   Once GCC version 2 has supplanted version 1, this can go.  However,
+   YYFAIL appears to be in use.  Nevertheless, it is formally deprecated
+   in Bison 2.4.2's NEWS entry, where a plan to phase it out is
+   discussed.  */

 #define YYFAIL		goto yyerrlab
+#if defined YYFAIL
+  /* This is here to suppress warnings from the GCC cpp's
+     -Wunused-macros.  Normally we don't worry about that warning, but
+     some users do, and we want to make it easy for users to remove
+     YYFAIL uses, which will produce warnings from Bison 2.5.  */
+#endif

 #define YYRECOVERING()  (!!yyerrstatus)

@@ -668,7 +677,7 @@ while (YYID (0))
   we won't break user code: when these are the locations we know.  */

 #ifndef YY_LOCATION_PRINT
-# if YYLTYPE_IS_TRIVIAL
+# if defined YYLTYPE_IS_TRIVIAL && YYLTYPE_IS_TRIVIAL
 #  define YY_LOCATION_PRINT(File, Loc)			\
     fprintf (File, "%d.%d-%d.%d",			\
 	      (Loc).first_line, (Loc).first_column,	\
@@ -1234,7 +1243,7 @@ b4_push_if([b4_pure_if([], [[  int yypushed_char = yychar;
  yyvsp = yyvs;]b4_locations_if([[
  yylsp = yyls;

-#if YYLTYPE_IS_TRIVIAL
+#if defined YYLTYPE_IS_TRIVIAL && YYLTYPE_IS_TRIVIAL
  /* Initialize the default location before parsing starts.  */
  yylloc.first_line   = yylloc.last_line   = ]b4_location_initial_line[;
  yylloc.first_column = yylloc.last_column = ]b4_location_initial_column[;
@@ -1675,8 +1684,8 @@ yypushreturn:
 ]b4_epilogue
 b4_defines_if(
 [@output(b4_spec_defines_file@)@
-b4_copyright([Skeleton interface for Bison's Yacc-like parsers in C],dnl '
-  [1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2006])
+b4_copyright([Skeleton interface for Bison's Yacc-like parsers in C],
+             [1984, 1989-1990, 2000-2006, 2009-2010])

 b4_percent_code_get([[requires]])[]dnl

@@ -1,7 +1,7 @@
 # DJGPP Maintainer's Makefile                                    -*-Makefile-*-
 # Requires GNU sed

-## Copyright (C) 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+## Copyright (C) 2005-2010 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
@@ -1,6 +1,6 @@
 This is a port of GNU Bison @VERSION@ to MSDOS/DJGPP.

-Copyright (C) 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+Copyright (C) 2005-2010 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
@@ -4,7 +4,7 @@ Rem Configure Bison for DJGPP.
 Rem WARNING WARNING WARNING: This file needs to have DOS CRLF end-of-line
 Rem format, or else stock DOS/Windows shells will refuse to run it.

-Rem Copyright (C) 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+Rem Copyright (C) 2005-2010 Free Software Foundation, Inc.

 Rem This program is free software: you can redistribute it and/or modify
 Rem it under the terms of the GNU General Public License as published by
@@ -3,7 +3,7 @@
 # of the configure script generated by autoconf 2.62.


-# Copyright (C) 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+# Copyright (C) 2005-2010 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
@@ -3,7 +3,7 @@
 # This is the config.site file for configuring GNU packages
 # which are to be built with DJGPP tools.

-# Copyright (C) 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+# Copyright (C) 2005-2010 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
@@ -1,6 +1,6 @@
 # sed script for DJGPP specific editing of config.hin

-# Copyright (C) 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+# Copyright (C) 2005-2010 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
@@ -7,7 +7,7 @@ Rem This batch file unpacks the Bison distribution while simultaneously
 Rem renaming some of the files whose names are invalid on DOS or conflict
 Rem with other file names after truncation to DOS 8+3 namespace.
 Rem
-Rem Copyright (C) 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+Rem Copyright (C) 2005-2010 Free Software Foundation, Inc.
 Rem
 Rem This program is free software: you can redistribute it and/or modify
 Rem it under the terms of the GNU General Public License as published by
@@ -1,6 +1,6 @@
 /* Subprocesses with pipes.

-   Copyright (C) 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+   Copyright (C) 2005-2010 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
@@ -1,5 +1,5 @@
 /* Subprocesses with pipes.
-   Copyright (C) 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+   Copyright (C) 2005-2010 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
@@ -3,7 +3,7 @@
 # of the testsuite script generated by autoconf 2.61.


-# Copyright (C) 2007, 2008 Free Software Foundation, Inc.
+# Copyright (C) 2007-2010 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
@@ -1,6 +1,5 @@
 ## Process this file with automake to produce Makefile.in -*-Makefile-*-
-## Copyright (C) 2001, 2002, 2003, 2005, 2006, 2007, 2008 Free Software
-## Foundation, Inc.
+## Copyright (C) 2001-2003, 2005-2010 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
@@ -33,9 +33,8 @@
 This manual (@value{UPDATED}) is for @acronym{GNU} Bison (version
@value{VERSION}), the @acronym{GNU} parser generator.

-Copyright @copyright{} 1988, 1989, 1990, 1991, 1992, 1993, 1995, 1998,
-1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free
-Software Foundation, Inc.
+Copyright @copyright{} 1988-1993, 1995, 1998-2010 Free Software
+Foundation, Inc.

@quotation
 Permission is granted to copy, distribute and/or modify this document
@@ -2704,9 +2703,6 @@ feature test macros can affect the behavior of Bison-generated
@findex %code requires
@findex %code provides
@findex %code top
-(The prologue alternatives described here are experimental.
-More user feedback will help to determine whether they should become permanent
-features.)

 The functionality of @var{Prologue} sections can often be subtle and
 inflexible.
@@ -3803,8 +3799,11 @@ typedef struct YYLTYPE
@} YYLTYPE;
@end example

-At the beginning of the parsing, Bison initializes all these fields to 1
-for @code{yylloc}.
+When @code{YYLTYPE} is not defined, at the beginning of the parsing, Bison
+initializes all these fields to 1 for @code{yylloc}.  To initialize
+@code{yylloc} with a custom location type (or to chose a different
+initialization), use the @code{%initial-action} directive.  @xref{Initial
+Action Decl, , Performing Actions before Parsing}.

@node Actions and Locations
@subsection Actions and Locations
@@ -4741,10 +4740,6 @@ Thus, @code{%code} replaces the traditional Yacc prologue,
 For a detailed discussion, see @ref{Prologue Alternatives}.

 For Java, the default location is inside the parser class.
-
-(Like all the Yacc prologue alternatives, this directive is experimental.
-More user feedback will help to determine whether it should become a permanent
-feature.)
@end deffn

@deffn {Directive} %code @var{qualifier} @{@var{code}@}
@@ -4822,10 +4817,6 @@ before any class definitions.
@end itemize
@end itemize

-(Like all the Yacc prologue alternatives, this directive is experimental.
-More user feedback will help to determine whether it should become a permanent
-feature.)
-
@cindex Prologue
 For a detailed discussion of how to use @code{%code} in place of the
 traditional Yacc prologue for C/C++, see @ref{Prologue Alternatives}.
@@ -4834,8 +4825,8 @@ traditional Yacc prologue for C/C++, see @ref{Prologue Alternatives}.
@deffn {Directive} %debug
 In the parser file, define the macro @code{YYDEBUG} to 1 if it is not
 already defined, so that the debugging facilities are compiled.
-@end deffn
@xref{Tracing, ,Tracing Your Parser}.
+@end deffn

@deffn {Directive} %define @var{variable}
@deffnx {Directive} %define @var{variable} "@var{value}"
@@ -5359,7 +5350,7 @@ This function is available if either the @code{%define api.push_pull "push"} or
@xref{Push Decl, ,A Push Parser}.

@deftypefun yypstate *yypstate_new (void)
-The fuction will return a valid parser instance if there was memory available
+The function will return a valid parser instance if there was memory available
 or 0 if no memory was available.
 In impure mode, it will also return 0 if a parser instance is currently
 allocated.
@@ -6816,7 +6807,7 @@ that allows variable-length arrays.  The default is 200.
 Do not allow @code{YYINITDEPTH} to be greater than @code{YYMAXDEPTH}.

@c FIXME: C++ output.
-Because of semantical differences between C and C++, the
+Because of semantic differences between C and C++, the
@acronym{LALR}(1) parsers in C produced by Bison cannot grow when compiled
 by C++ compilers.  In this precise case (compiling a C parser as C++) you are
 suggested to grow @code{YYINITDEPTH}.  The Bison maintainers hope to fix
@@ -8455,7 +8446,7 @@ global variables.

@noindent
 Then we request the location tracking feature, and initialize the
-first location's file name.  Afterwards new locations are computed
+first location's file name.  Afterward new locations are computed
 relatively to the previous locations: the file name will be
 automatically propagated.

@@ -8586,8 +8577,8 @@ parser's to get the set of defined tokens.
@example
 %@{                                            /* -*- C++ -*- */
 # include <cstdlib>
-# include <errno.h>
-# include <limits.h>
+# include <cerrno>
+# include <climits>
 # include <string>
 # include "calc++-driver.hh"
 # include "calc++-parser.hh"
@@ -8989,7 +8980,7 @@ changed using @code{%define location_type "@var{class-name}".}

@deftypemethod {Lexer} {int} yylex ()
 Return the next token.  Its type is the return value, its semantic
-value and location are saved and returned by the ther methods in the
+value and location are saved and returned by the their methods in the
 interface.

 Use @code{%define lex_throws} to specify any uncaught exceptions.
@@ -9007,7 +8998,7 @@ The return type can be changed using @code{%define position_type
@end deftypemethod

@deftypemethod {Lexer} {Object} getLVal ()
-Return the semantical value of the last token that yylex returned.
+Return the semantic value of the last token that yylex returned.

 The return type can be changed using @code{%define stype
 "@var{class-name}".}
@@ -9077,11 +9068,6 @@ Start error recovery without printing an error message.
@xref{Error Recovery}.
@end deffn

-@deffn {Statement} {return YYFAIL;}
-Print an error message and start error recovery. 
-@xref{Error Recovery}.
-@end deffn
-
@deftypefn {Function} {boolean} recovering ()
 Return whether error recovery is being done. In this state, the parser
 reads token until it reaches a known state, and then restarts normal
@@ -9123,7 +9109,7 @@ corresponds to these C macros.}.
@item
 Java lacks unions, so @code{%union} has no effect.  Instead, semantic
 values have a common base type: @code{Object} or as specified by
-@code{%define stype}.  Angle backets on @code{%token}, @code{type},
+@samp{%define stype}.  Angle brackets on @code{%token}, @code{type},
@code{$@var{n}} and @code{$$} specify subtypes rather than fields of
 an union.  The type of @code{$$}, even with angle brackets, is the base
 type since Java casts are not allow on the left-hand side of assignments.
@@ -9132,7 +9118,7 @@ left-hand side of assignments. See @pxref{Java Semantic Values} and
@pxref{Java Action Features}.

@item
-The prolog declarations have a different meaning than in C/C++ code.
+The prologue declarations have a different meaning than in C/C++ code.
@table @asis
@item @code{%code imports}
 blocks are placed at the beginning of the Java source code.  They may
@@ -9778,10 +9764,6 @@ Insert @var{code} verbatim into output parser source.
 Equip the parser for debugging.  @xref{Decl Summary}.
@end deffn

-@deffn {Directive} %debug
-Equip the parser for debugging.  @xref{Decl Summary}.
-@end deffn
-
@ifset defaultprec
@deffn {Directive} %default-prec
 Assign a precedence to rules that lack an explicit @samp{%prec}
@@ -10354,6 +10336,10 @@ grammatically indivisible.  The piece of text it represents is a token.

@bye

+@c Local Variables:
+@c fill-column: 76
+@c End:
+
@c LocalWords: texinfo setfilename settitle setchapternewpage finalout
@c LocalWords: ifinfo smallbook shorttitlepage titlepage GPL FIXME iftex
@c LocalWords: akim fn cp syncodeindex vr tp synindex dircategory direntry
@@ -19,7 +19,7 @@
 \def\finalout{\overfullrule=0pt}
 %\finalout

-% Copyright (c) 1998, 2001  Free Software Foundation, Inc.
+% Copyright (c) 1998, 2001, 2009-2010 Free Software Foundation, Inc.
 %
 % This file is part of Bison.
 %
@@ -1,4 +1,4 @@
-## Copyright (C) 2006 Free Software Foundation, Inc.
+## Copyright (C) 2006, 2009-2010 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
@@ -19,7 +19,7 @@ straightforward use of _build/src/bison would.)

 --

-Copyright (C) 2006 Free Software Foundation, Inc.
+Copyright (C) 2006, 2009-2010 Free Software Foundation, Inc.

 This file is part of Bison, the GNU Compiler Compiler.

@@ -1,6 +1,6 @@
 #! /usr/bin/perl -w

-# Copyright (C) 2006, 2008 Free Software Foundation, Inc.
+# Copyright (C) 2006, 2008-2010 Free Software Foundation, Inc.
 #
 # This file is part of Bison, the GNU Compiler Compiler.
 #
@@ -1,5 +1,5 @@
 ## Process this file with automake to produce Makefile.in -*-Makefile-*-
-## Copyright (C) 2005 Free Software Foundation, Inc.
+## Copyright (C) 2005, 2009-2010 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
@@ -1,5 +1,5 @@
 ## Process this file with automake to produce Makefile.in -*-Makefile-*-
-## Copyright (C) 2005, 2006 Free Software Foundation, Inc.
+## Copyright (C) 2005-2006, 2009-2010 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
@@ -31,12 +31,16 @@ $(BISON): $(BISON_IN)
 doc = $(top_srcdir)/doc/bison.texinfo
 extexi = $(top_srcdir)/examples/extexi
 # Extract in src.
-$(calc_extracted): $(doc) $(extexi)
+$(srcdir)/calc.stamp: $(doc) $(extexi)
+	rm -f $@ $@.tmp
+	touch $@.tmp
 	cd $(srcdir) && \
 	   $(AWK) -f ../extexi -v VERSION="$(VERSION)" \
 	     ../../doc/bison.texinfo -- calc++-parser.yy \
 	     calc++-scanner.ll calc++.cc calc++-driver.hh calc++-driver.cc
+	mv $@.tmp $@

+$(calc_extracted): $(srcdir)/calc.stamp

 ## ------------------- ##
 ## Parser generation.  ##
@@ -50,7 +54,10 @@ MAINTAINERCLEANFILES = $(srcdir)/*.stamp $(BUILT_SOURCES)
 # Compile the parser and save cycles.
 # This code comes from "Handling Tools that Produce Many Outputs",
 # from the Automake documentation.
-EXTRA_DIST = $(srcdir)/calc++-parser.stamp $(srcdir)/calc++-parser.yy
+EXTRA_DIST =					\
+  $(srcdir)/calc++-parser.stamp			\
+  $(srcdir)/calc++-parser.yy			\
+  $(srcdir)/calc.stamp
 # Don't depend on $(BISON) otherwise we would rebuild these files
 # in srcdir, including during distcheck, which is forbidden.
 $(srcdir)/calc++-parser.stamp: $(srcdir)/calc++-parser.yy $(BISON_IN)
@@ -1,7 +1,8 @@
 # Extract all examples from the manual source.            -*- AWK -*-

 # This file is part of GNU Bison
-# Copyright 1992, 2000, 2001, 2005, 2006 Free Software Foundation, Inc.
+# Copyright (C) 1992, 2000-2001, 2005-2006, 2009-2010 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
@@ -3,7 +3,9 @@ Makefile
 Makefile.in
 argmatch.c
 argmatch.h
+basename-lgpl.c
 basename.c
+bitrotate.h
 c-ctype.c
 c-ctype.h
 c-strcase.h
@@ -14,22 +16,30 @@ config.charset
 config.h
 config.hin
 configmake.h
+dirname-lgpl.c
 dirname.c
 dirname.h
 dup-safer.c
+dup2.c
+errno.h
 errno.in.h
 error.c
 error.h
 exitfail.c
 exitfail.h
+fcntl.c
+fcntl.h
+fcntl.in.h
 fd-safer.c
 fopen-safer.c
+fopen.c
 getopt.c
 getopt.h
 getopt.in.h
 getopt1.c
 getopt_.h
 getopt_int.h
+getpagesize.c
 gettext.h
 gnulib.mk
 hash.c
@@ -45,6 +55,8 @@ mbrtowc.c
 mbsinit.c
 mbswidth.c
 mbswidth.h
+memchr.c
+memchr.valgrind
 obstack.c
 obstack.h
 pipe-safer.c
@@ -60,11 +72,16 @@ stamp-h1
 stdbool.h
 stdbool.in.h
 stdbool_.h
+stddef.h
+stddef.in.h
 stdint.h
 stdint.in.h
 stdint_.h
 stdio--.h
 stdio-safer.h
+stdio-write.c
+stdio.h
+stdio.in.h
 stdlib.h
 stdlib.in.h
 stdlib_.h
@@ -6,7 +6,9 @@
 /Makefile.in
 /argmatch.c
 /argmatch.h
+/basename-lgpl.c
 /basename.c
+/bitrotate.h
 /c-ctype.c
 /c-ctype.h
 /c-strcase.h
@@ -17,22 +19,30 @@
 /config.h
 /config.hin
 /configmake.h
+/dirname-lgpl.c
 /dirname.c
 /dirname.h
 /dup-safer.c
+/dup2.c
+/errno.h
 /errno.in.h
 /error.c
 /error.h
 /exitfail.c
 /exitfail.h
+/fcntl.c
+/fcntl.h
+/fcntl.in.h
 /fd-safer.c
 /fopen-safer.c
+/fopen.c
 /getopt.c
 /getopt.h
 /getopt.in.h
 /getopt1.c
 /getopt_.h
 /getopt_int.h
+/getpagesize.c
 /gettext.h
 /gnulib.mk
 /hash.c
@@ -48,6 +58,8 @@
 /mbsinit.c
 /mbswidth.c
 /mbswidth.h
+/memchr.c
+/memchr.valgrind
 /obstack.c
 /obstack.h
 /pipe-safer.c
@@ -63,11 +75,16 @@
 /stdbool.h
 /stdbool.in.h
 /stdbool_.h
+/stddef.h
+/stddef.in.h
 /stdint.h
 /stdint.in.h
 /stdint_.h
 /stdio--.h
 /stdio-safer.h
+/stdio-write.c
+/stdio.h
+/stdio.in.h
 /stdlib.h
 /stdlib.in.h
 /stdlib_.h
@@ -1,7 +1,7 @@
 # Make bison/lib.

-# Copyright (C) 2001, 2002, 2003, 2004, 2006, 2008, 2009
-# Free Software Foundation, Inc.
+# Copyright (C) 2001-2004, 2006, 2008-2010 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
@@ -1,5 +1,6 @@
 /* Array bitsets.
-   Copyright (C) 2002, 2003, 2006 Free Software Foundation, Inc.
+   Copyright (C) 2002-2003, 2006, 2009-2010 Free Software Foundation,
+   Inc.
   Contributed by Michael Hayes ([email protected]).

   This program is free software: you can redistribute it and/or modify
@@ -1,5 +1,5 @@
 /* Functions to support abitsets.
-   Copyright (C) 2002, 2004 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2004, 2009-2010 Free Software Foundation, Inc.
   Contributed by Michael Hayes ([email protected]).

   This program is free software: you can redistribute it and/or modify
@@ -1,5 +1,6 @@
 /* Base bitset stuff.
-   Copyright (C) 2002, 2003, 2004, 2006 Free Software Foundation, Inc.
+   Copyright (C) 2002-2004, 2006, 2009-2010 Free Software Foundation,
+   Inc.
   Contributed by Michael Hayes ([email protected]).

   This program is free software: you can redistribute it and/or modify
@@ -1,5 +1,5 @@
 /* General bitsets.
-   Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
+   Copyright (C) 2002-2006, 2009-2010 Free Software Foundation, Inc.
   Contributed by Michael Hayes ([email protected]).

   This program is free software: you can redistribute it and/or modify
@@ -1,5 +1,5 @@
 /* Generic bitsets.
-   Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
+   Copyright (C) 2002-2004, 2009-2010 Free Software Foundation, Inc.
   Contributed by Michael Hayes ([email protected]).

   This program is free software: you can redistribute it and/or modify
@@ -1,5 +1,5 @@
 /* Bitset statistics.
-   Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
+   Copyright (C) 2002-2006, 2009-2010 Free Software Foundation, Inc.
   Contributed by Michael Hayes ([email protected]).

   This program is free software: you can redistribute it and/or modify
@@ -1,5 +1,5 @@
 /* Functions to support bitset statistics.
-   Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
+   Copyright (C) 2002-2004, 2009-2010 Free Software Foundation, Inc.
   Contributed by Michael Hayes ([email protected]).

   This program is free software: you can redistribute it and/or modify
@@ -1,5 +1,6 @@
 /* Bitset vectors.
-   Copyright (C) 2001, 2002, 2004, 2006 Free Software Foundation, Inc.
+   Copyright (C) 2001-2002, 2004, 2006, 2009-2010 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
@@ -1,5 +1,5 @@
 /* Bitset vectors.
-   Copyright (C) 2002, 2004 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2004, 2009-2010 Free Software Foundation, Inc.
   Contributed by Akim Demaille (akim@freefriends.org).

   This program is free software: you can redistribute it and/or modify
@@ -1,5 +1,6 @@
 /* Bitset vectors.
-   Copyright (C) 2001, 2002, 2004, 2005, 2006 Free Software Foundation, Inc.
+   Copyright (C) 2001-2002, 2004-2006, 2009-2010 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
@@ -1,5 +1,5 @@
 /* Bitset vectors.
-   Copyright (C) 2002, 2004 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2004, 2009-2010 Free Software Foundation, Inc.
   Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).

   This program is free software: you can redistribute it and/or modify
@@ -1,5 +1,5 @@
 /* Functions to support expandable bitsets.
-   Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
+   Copyright (C) 2002-2006, 2009-2010 Free Software Foundation, Inc.
   Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).

   This program is free software: you can redistribute it and/or modify
@@ -1,5 +1,5 @@
 /* Functions to support ebitsets.
-   Copyright (C) 2002, 2004 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2004, 2009-2010 Free Software Foundation, Inc.
   Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).

   This program is free software: you can redistribute it and/or modify
@@ -1,6 +1,6 @@
 /* get-errno.c - get and set errno.

-   Copyright (C) 2002, 2006 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2010 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
@@ -1,6 +1,6 @@
 /* get-errno.h - get and set errno.

-   Copyright (C) 2002 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2009-2010 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
@@ -1,5 +1,6 @@
 /* Functions to support link list bitsets.
-   Copyright (C) 2002, 2003, 2004, 2006 Free Software Foundation, Inc.
+   Copyright (C) 2002-2004, 2006, 2009-2010 Free Software Foundation,
+   Inc.
   Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).

   This program is free software: you can redistribute it and/or modify
@@ -1,5 +1,5 @@
 /* Functions to support lbitsets.
-   Copyright (C) 2002, 2004 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2004, 2009-2010 Free Software Foundation, Inc.
   Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).

   This program is free software: you can redistribute it and/or modify
@@ -1,5 +1,5 @@
 /* Fake libiberty.h for Bison.
-   Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
+   Copyright (C) 2002-2004, 2009-2010 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
@@ -1,6 +1,6 @@
 /* Yacc library main function.

-   Copyright (C) 2002 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2009-2010 Free Software Foundation, Inc.

   This file is part of Bison, the GNU Compiler Compiler.

@@ -1,6 +1,7 @@
 /* Subprocesses with pipes.

-   Copyright (C) 2002, 2004, 2005, 2006 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2004-2006, 2009-2010 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
@@ -1,5 +1,6 @@
 /* Subprocesses with pipes.
-   Copyright (C) 2002, 2004, 2005 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2004-2005, 2009-2010 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
@@ -1,5 +1,6 @@
 /* Timing variables for measuring compiler performance.
-   Copyright (C) 2000, 2002, 2004, 2005, 2006 Free Software Foundation, Inc.
+   Copyright (C) 2000, 2002, 2004-2006, 2009-2010 Free Software
+   Foundation, Inc.
   Contributed by Alex Samuel <samuel@codesourcery.com>

   This program is free software: you can redistribute it and/or modify
@@ -1,6 +1,6 @@
 /* This file contains the definitions for timing variables used to -*- C -*-
   measure run-time performance of the compiler.
-   Copyright (C) 2002, 2007 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2007, 2009-2010 Free Software Foundation, Inc.
   Contributed by Akim Demaille <akim@freefriends.org>.

   This file is part of Bison, the GNU Compiler Compiler.
@@ -1,5 +1,6 @@
 /* Timing variables for measuring compiler performance.
-   Copyright (C) 2000, 2002, 2004 Free Software Foundation, Inc.
+   Copyright (C) 2000, 2002, 2004, 2009-2010 Free Software Foundation,
+   Inc.
   Contributed by Alex Samuel <samuel@codesourcery.com>

   This program is free software: you can redistribute it and/or modify
@@ -1,5 +1,5 @@
 /* Variable array bitsets.
-   Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
+   Copyright (C) 2002-2006, 2009-2010 Free Software Foundation, Inc.
   Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).

   This program is free software: you can redistribute it and/or modify
@@ -1,5 +1,5 @@
 /* Functions to support vbitsets.
-   Copyright (C) 2002, 2004 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2004, 2009-2010 Free Software Foundation, Inc.
   Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).

   This program is free software: you can redistribute it and/or modify
@@ -1,6 +1,6 @@
 /* Yacc library error-printing function.

-   Copyright (C) 2002 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2009-2010 Free Software Foundation, Inc.

   This file is part of Bison, the GNU Compiler Compiler.

@@ -1,16 +1,23 @@
 00gnulib.m4
 absolute-header.m4
 argmatch.m4
+assert.m4
 config-h.m4
 dirname.m4
 dos.m4
 double-slash-root.m4
+dup2.m4
 environ.m4
 errno_h.m4
 error.m4
 exitfail.m4
 extensions.m4
+fcntl-o.m4
+fcntl.m4
+fcntl_h.m4
+fopen.m4
 getopt.m4
+getpagesize.m4
 gettext.m4
 gnulib-cache.m4
 gnulib-common.m4
@@ -39,6 +46,8 @@ mbrtowc.m4
 mbsinit.m4
 mbstate_t.m4
 mbswidth.m4
+memchr.m4
+mmap-anon.m4
 multiarch.m4
 nls.m4
 po.m4
@@ -47,9 +56,11 @@ quote.m4
 quotearg.m4
 setenv.m4
 stdbool.m4
+stddef_h.m4
 stdint.m4
 stdint_h.m4
 stdio-safer.m4
+stdio_h.m4
 stdlib_h.m4
 stpcpy.m4
 strerror.m4
@@ -63,6 +74,7 @@ threadlib.m4
 unistd-safer.m4
 unistd_h.m4
 unlocked-io.m4
+warn-on-use.m4
 warning.m4
 warnings.m4
 wchar.m4
@@ -1,16 +1,23 @@
 /00gnulib.m4
 /absolute-header.m4
 /argmatch.m4
+/assert.m4
 /config-h.m4
 /dirname.m4
 /dos.m4
 /double-slash-root.m4
+/dup2.m4
 /environ.m4
 /errno_h.m4
 /error.m4
 /exitfail.m4
 /extensions.m4
+/fcntl-o.m4
+/fcntl.m4
+/fcntl_h.m4
+/fopen.m4
 /getopt.m4
+/getpagesize.m4
 /gettext.m4
 /gnulib-cache.m4
 /gnulib-common.m4
@@ -39,6 +46,8 @@
 /mbsinit.m4
 /mbstate_t.m4
 /mbswidth.m4
+/memchr.m4
+/mmap-anon.m4
 /multiarch.m4
 /nls.m4
 /po.m4
@@ -47,9 +56,11 @@
 /quotearg.m4
 /setenv.m4
 /stdbool.m4
+/stddef_h.m4
 /stdint.m4
 /stdint_h.m4
 /stdio-safer.m4
+/stdio_h.m4
 /stdlib_h.m4
 /stpcpy.m4
 /strerror.m4
@@ -63,6 +74,7 @@
 /unistd-safer.m4
 /unistd_h.m4
 /unlocked-io.m4
+/warn-on-use.m4
 /warning.m4
 /warnings.m4
 /wchar.m4
@@ -1,5 +1,5 @@
 # bison-i18n.m4 serial 2
-dnl Copyright (C) 2005-2006 Free Software Foundation, Inc.
+dnl Copyright (C) 2005-2006, 2009-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -1,6 +1,6 @@
 # Sanity test a C compiler.

-# Copyright (C) 2006 Free Software Foundation, Inc.
+# Copyright (C) 2006, 2009-2010 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
@@ -1,7 +1,7 @@
 # -*- Autoconf -*-
 # Sanity-test a C++ compiler.
 #
-# Copyright (C) 2004, 2006 Free Software Foundation, Inc.
+# Copyright (C) 2004, 2006, 2009-2010 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
@@ -1,33 +1,59 @@
-# m4.m4 serial 5
-dnl Copyright (C) 2000, 2006, 2007, 2008 Free Software Foundation, Inc.
-dnl This file is free software; the Free Software Foundation
-dnl gives unlimited permission to copy and/or distribute it,
-dnl with or without modifications, as long as this notice is preserved.
+# m4.m4 serial 10
+
+# Copyright (C) 2000, 2006-2010 Free Software Foundation, Inc.
+
+# Copying and distribution of this file, with or without modification,
+# are permitted in any medium without royalty provided the copyright
+# notice and this notice are preserved.  This file is offered as-is,
+# without warranty of any kind.

 # AC_PROG_GNU_M4
 # --------------
-# Check for GNU M4, at least 1.4.5 (all earlier versions had a bug in
-# trace support:
-# http://lists.gnu.org/archive/html/bug-gnu-utils/2006-11/msg00096.html)
+# Check for GNU M4, at least 1.4.6 (all earlier versions had bugs in
+# trace support and regexp support):
+# http://lists.gnu.org/archive/html/bug-gnu-utils/2006-11/msg00096.html
+# http://lists.gnu.org/archive/html/bug-autoconf/2009-07/msg00023.html
 # Also, check whether --error-output (through 1.4.x) or --debugfile (2.0)
 # is supported, and AC_SUBST M4_DEBUGFILE accordingly.
 AC_DEFUN([AC_PROG_GNU_M4],
-  [AC_ARG_VAR([M4], [Location of GNU M4 1.4.5 or later.  Defaults to the first
+  [AC_ARG_VAR([M4], [Location of GNU M4 1.4.6 or later.  Defaults to the first
    program of `m4', `gm4', or `gnum4' on PATH that meets Autoconf needs.])
  AC_CACHE_CHECK([for GNU M4 that supports accurate traces], [ac_cv_path_M4],
    [rm -f conftest.m4f
+ac_had_posixly_correct=${POSIXLY_CORRECT:+yes}
+AS_UNSET([POSIXLY_CORRECT])
 AC_PATH_PROGS_FEATURE_CHECK([M4], [m4 gm4 gnum4],
      [dnl Creative quoting here to avoid raw dnl and ifdef in configure.
-      # Root out GNU M4 1.4.4, as well as non-GNU m4 that ignore -t, -F.
-      ac_snippet=change'quote(<,>)in''dir(<if''def>,mac,bug)d'nl
+      # Root out GNU M4 1.4.5, as well as non-GNU m4 that ignore -t, -F.
+      ac_snippet=change'quote(<,>)in''dir(<if''def>,mac,bug)'
+      ac_snippet=${ac_snippet}pat'subst(a,\(b\)\|\(a\),\1)d'nl
      test -z "`$ac_path_M4 -F conftest.m4f </dev/null 2>&1`" \
-      && test -z "`echo $ac_snippet | $ac_path_M4 --trace=mac 2>&1`" \
+      && test -z "`AS_ECHO([$ac_snippet]) | $ac_path_M4 --trace=mac 2>&1`" \
      && test -f conftest.m4f \
      && ac_cv_path_M4=$ac_path_M4 ac_path_M4_found=:
      rm -f conftest.m4f],
      [AC_MSG_ERROR([no acceptable m4 could be found in \$PATH.
-GNU M4 1.4.5 or later is required; 1.4.11 is recommended])])])
+GNU M4 1.4.6 or later is required; 1.4.13 is recommended])])])
  M4=$ac_cv_path_M4
+  AC_CACHE_CHECK([whether $ac_cv_path_M4 accepts --gnu],
+    [ac_cv_prog_gnu_m4_gnu],
+    [case `$M4 --help < /dev/null 2>&1` in
+      *--gnu*) ac_cv_prog_gnu_m4_gnu=yes ;;
+      *) ac_cv_prog_gnu_m4_gnu=no ;;
+    esac])
+  if test "$ac_cv_prog_gnu_m4_gnu" = yes; then
+    M4_GNU=--gnu
+  else
+    M4_GNU=
+  fi
+  AC_SUBST([M4_GNU])
+  if test x$ac_had_posixly_correct = xyes; then
+    POSIXLY_CORRECT=:
+    if test $ac_cv_prog_gnu_m4_gnu = no; then
+      AC_MSG_WARN([The version of M4 that was found does not support -g.])
+      AC_MSG_WARN([Using it with POSIXLY_CORRECT set may cause problems.])
+    fi
+  fi
  AC_CACHE_CHECK([how m4 supports trace files], [ac_cv_prog_gnu_m4_debugfile],
    [case `$M4 --help < /dev/null 2>&1` in
      *debugfile*) ac_cv_prog_gnu_m4_debugfile=--debugfile ;;
@@ -1,7 +1,8 @@
 # -*- Autoconf -*-
 # Checks required to run `subpipe'.
 #
-# Copyright (C) 2002, 2003, 2005 Free Software Foundation, Inc.
+# Copyright (C) 2002-2003, 2005, 2009-2010 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
@@ -1,7 +1,7 @@
 # -*- Autoconf -*-
 # Checks required to run `timevar', a time tracker.
 #
-# Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+# Copyright (C) 2002-2003, 2009-2010 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
@@ -1,858 +0,0 @@
-# -*-Makefile-*-
-# This Makefile fragment tries to be general-purpose enough to be
-# used by at least coreutils, idutils, CPPI, Bison, and Autoconf.
-
-## Copyright (C) 2001-2008 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/>.
-
-# This is reported not to work with make-3.79.1
-# ME := $(word $(words $(MAKEFILE_LIST)),$(MAKEFILE_LIST))
-ME := maint.mk
-
-# Do not save the original name or timestamp in the .tar.gz file.
-# Use --rsyncable if available.
-gzip_rsyncable := \
-  $(shell gzip --help 2>/dev/null|grep rsyncable >/dev/null && echo --rsyncable)
-GZIP_ENV = '--no-name --best $(gzip_rsyncable)'
-
-GIT = git
-VC = $(GIT)
-VC-tag = git tag -s -m '$(VERSION)'
-
-VC_LIST = build-aux/vc-list-files
-
-VC_LIST_EXCEPT = \
-  $(VC_LIST) | if test -f .x-$@; then grep -vEf .x-$@; else grep -v ChangeLog; fi
-
-ifeq ($(origin prev_version_file), undefined)
-  prev_version_file = $(srcdir)/.prev-version
-endif
-
-PREV_VERSION := $(shell cat $(prev_version_file))
-VERSION_REGEXP = $(subst .,\.,$(VERSION))
-PREV_VERSION_REGEXP = $(subst .,\.,$(PREV_VERSION))
-
-ifeq ($(VC),$(GIT))
-this-vc-tag = v$(VERSION)
-this-vc-tag-regexp = v$(VERSION_REGEXP)
-else
-tag-package = $(shell echo "$(PACKAGE)" | tr '[:lower:]' '[:upper:]')
-tag-this-version = $(subst .,_,$(VERSION))
-this-vc-tag = $(tag-package)-$(tag-this-version)
-this-vc-tag-regexp = $(this-vc-tag)
-endif
-my_distdir = $(PACKAGE)-$(VERSION)
-
-# Old releases are stored here.
-release_archive_dir ?= ../release
-
-# Prevent programs like 'sort' from considering distinct strings to be equal.
-# Doing it here saves us from having to set LC_ALL elsewhere in this file.
-export LC_ALL = C
-
-
-
-## --------------- ##
-## Sanity checks.  ##
-## --------------- ##
-
-# Collect the names of rules starting with `sc_'.
-syntax-check-rules := $(shell sed -n 's/^\(sc_[a-zA-Z0-9_-]*\):.*/\1/p' \
-                        $(srcdir)/$(ME))
-.PHONY: $(syntax-check-rules)
-
-local-checks-available = \
-  po-check copyright-check m4-check author_mark_check \
-  patch-check strftime-check $(syntax-check-rules) \
-  makefile_path_separator_check \
-  makefile-check check-AUTHORS
-.PHONY: $(local-checks-available)
-
-local-check := $(filter-out $(local-checks-to-skip), $(local-checks-available))
-
-syntax-check: $(local-check)
-#	@grep -nE '#  *include <(limits|std(def|arg|bool))\.h>'		\
-#	    $$(find -type f -name '*.[chly]') &&			\
-#	  { echo '$(ME): found conditional include' 1>&2;		\
-#	    exit 1; } || :
-
-#	grep -nE '^#  *include <(string|stdlib)\.h>'			\
-#	    $(srcdir)/{lib,src}/*.[chy] &&				\
-#	  { echo '$(ME): FIXME' 1>&2;					\
-#	    exit 1; } || :
-# FIXME: don't allow `#include .strings\.h' anywhere
-
-sc_avoid_if_before_free:
-	@$(srcdir)/build-aux/useless-if-before-free			\
-		$(useless_free_options)					\
-	    $$($(VC_LIST_EXCEPT)) &&					\
-	  { echo '$(ME): found useless "if" before "free" above' 1>&2;	\
-	    exit 1; } || :
-
-sc_cast_of_argument_to_free:
-	@grep -nE '\<free *\( *\(' $$($(VC_LIST_EXCEPT)) &&		\
-	  { echo '$(ME): don'\''t cast free argument' 1>&2;		\
-	    exit 1; } || :
-
-sc_cast_of_x_alloc_return_value:
-	@grep -nE '\*\) *x(m|c|re)alloc\>' $$($(VC_LIST_EXCEPT)) &&	\
-	  { echo '$(ME): don'\''t cast x*alloc return value' 1>&2;	\
-	    exit 1; } || :
-
-sc_cast_of_alloca_return_value:
-	@grep -nE '\*\) *alloca\>' $$($(VC_LIST_EXCEPT)) &&		\
-	  { echo '$(ME): don'\''t cast alloca return value' 1>&2;	\
-	    exit 1; } || :
-
-sc_space_tab:
-	@grep -n '[ ]	' $$($(VC_LIST_EXCEPT)) &&			\
-	  { echo '$(ME): found SPACE-TAB sequence; remove the SPACE'	\
-		1>&2; exit 1; } || :
-
-# Don't use *scanf or the old ato* functions in `real' code.
-# They provide no error checking mechanism.
-# Instead, use strto* functions.
-sc_prohibit_atoi_atof:
-	@grep -nE '\<([fs]?scanf|ato([filq]|ll))\>' $$($(VC_LIST_EXCEPT)) && \
-	  { echo '$(ME): do not use *scan''f, ato''f, ato''i, ato''l, ato''ll, ato''q, or ss''canf'	\
-		1>&2; exit 1; } || :
-
-# Use STREQ rather than comparing strcmp == 0, or != 0.
-sc_prohibit_strcmp:
-	@grep -nE '! *str''cmp *\(|\<str''cmp *\([^)]+\) *=='		\
-	    $$($(VC_LIST_EXCEPT)) &&					\
-	  { echo '$(ME): use STREQ in place of the above uses of str''cmp' \
-		1>&2; exit 1; } || :
-
-# Using EXIT_SUCCESS as the first argument to error is misleading,
-# since when that parameter is 0, error does not exit.  Use `0' instead.
-sc_error_exit_success:
-	@grep -nF 'error (EXIT_SUCCESS,'				\
-	    $$(find -type f -name '*.[chly]') &&			\
-	  { echo '$(ME): found error (EXIT_SUCCESS' 1>&2;		\
-	    exit 1; } || :
-
-# `FATAL:' should be fully upper-cased in error messages
-# `WARNING:' should be fully upper-cased, or fully lower-cased
-sc_error_message_warn_fatal:
-	@grep -nEA2 '[^rp]error \(' $$($(VC_LIST_EXCEPT))		\
-	    | grep -E '"Warning|"Fatal|"fatal' &&			\
-	  { echo '$(ME): use FATAL, WARNING or warning'	1>&2;		\
-	    exit 1; } || :
-
-# Error messages should not start with a capital letter
-sc_error_message_uppercase:
-	@grep -nEA2 '[^rp]error \(' $$($(VC_LIST_EXCEPT))		\
-	    | grep -E '"[A-Z]'						\
-	    | grep -vE '"FATAL|"WARNING|"Java|"C#|PRIuMAX' &&		\
-	  { echo '$(ME): found capitalized error message' 1>&2;		\
-	    exit 1; } || :
-
-# Error messages should not end with a period
-sc_error_message_period:
-	@grep -nEA2 '[^rp]error \(' $$($(VC_LIST_EXCEPT))		\
-	    | grep -E '[^."]\."' &&					\
-	  { echo '$(ME): found error message ending in period' 1>&2;	\
-	    exit 1; } || :
-
-sc_file_system:
-	@grep -ni 'file''system' $$($(VC_LIST_EXCEPT)) &&		\
-	  { echo '$(ME): found use of "file''system";'			\
-	    'rewrite to use "file system"' 1>&2;			\
-	    exit 1; } || :
-
-# Don't use cpp tests of this symbol.  All code assumes config.h is included.
-sc_no_have_config_h:
-	@grep -n '^# *if.*HAVE''_CONFIG_H' $$($(VC_LIST_EXCEPT)) &&	\
-	  { echo '$(ME): found use of HAVE''_CONFIG_H; remove'		\
-		1>&2; exit 1; } || :
-
-# Nearly all .c files must include <config.h>.
-sc_require_config_h:
-	@if $(VC_LIST_EXCEPT) | grep '\.c$$' > /dev/null; then		\
-	  grep -L '^# *include <config\.h>'				\
-		$$($(VC_LIST_EXCEPT) | grep '\.c$$')			\
-	      | grep . &&						\
-	  { echo '$(ME): the above files do not include <config.h>'	\
-		1>&2; exit 1; } || :;					\
-	else :;								\
-	fi
-
-# To use this "command" macro, you must first define two shell variables:
-# h: the header, enclosed in <> or ""
-# re: a regular expression that matches IFF something provided by $h is used.
-define _header_without_use
-  h_esc=`echo "$$h"|sed 's/\./\\./'`;					\
-  if $(VC_LIST_EXCEPT) | grep '\.c$$' > /dev/null; then			\
-    files=$$(grep -l '^# *include '"$$h_esc"				\
-	     $$($(VC_LIST_EXCEPT) | grep '\.c$$')) &&			\
-    grep -LE "$$re" $$files | grep . &&					\
-      { echo "$(ME): the above files include $$h but don't use it"	\
-	1>&2; exit 1; } || :;						\
-  else :;								\
-  fi
-endef
-
-# Prohibit the inclusion of assert.h without an actual use of assert.
-sc_prohibit_assert_without_use:
-	@h='<assert.h>' re='\<assert *\(' $(_header_without_use)
-
-# Prohibit the inclusion of getopt.h without an actual use.
-sc_prohibit_getopt_without_use:
-	@h='<getopt.h>' re='\<getopt(_long)? *\(' $(_header_without_use)
-
-# Don't include quotearg.h unless you use one of its functions.
-sc_prohibit_quotearg_without_use:
-	@h='"quotearg.h"' re='\<quotearg(_[^ ]+)? *\(' $(_header_without_use)
-
-# Don't include quote.h unless you use one of its functions.
-sc_prohibit_quote_without_use:
-	@h='"quote.h"' re='\<quote(_n)? *\(' $(_header_without_use)
-
-# Don't include this header unless you use one of its functions.
-sc_prohibit_long_options_without_use:
-	@h='"long-options.h"' re='\<parse_long_options *\(' \
-	  $(_header_without_use)
-
-# Don't include this header unless you use one of its functions.
-sc_prohibit_inttostr_without_use:
-	@h='"inttostr.h"' re='\<(off|[iu]max|uint)tostr *\(' \
-	  $(_header_without_use)
-
-# Don't include this header unless you use one of its functions.
-sc_prohibit_error_without_use:
-	@h='"error.h"' \
-	re='\<error(_at_line|_print_progname|_one_per_line|_message_count)? *\('\
-	  $(_header_without_use)
-
-sc_prohibit_safe_read_without_use:
-	@h='"safe-read.h"' re='(\<SAFE_READ_ERROR\>|\<safe_read *\()' \
-	  $(_header_without_use)
-
-sc_prohibit_argmatch_without_use:
-	@h='"argmatch.h"' \
-	re='(\<(ARRAY_CARDINALITY|X?ARGMATCH(|_TO_ARGUMENT|_VERIFY))\>|\<argmatch(_exit_fn|_(in)?valid) *\()' \
-	  $(_header_without_use)
-
-sc_prohibit_root_dev_ino_without_use:
-	@h='"root-dev-ino.h"' \
-	re='(\<ROOT_DEV_INO_(CHECK|WARN)\>|\<get_root_dev_ino *\()' \
-	  $(_header_without_use)
-
-sc_obsolete_symbols:
-	@grep -nE '\<(HAVE''_FCNTL_H|O''_NDELAY)\>'			\
-	     $$($(VC_LIST_EXCEPT)) &&					\
-	  { echo '$(ME): do not use HAVE''_FCNTL_H or O''_NDELAY'	\
-		1>&2; exit 1; } || :
-
-# FIXME: warn about definitions of EXIT_FAILURE, EXIT_SUCCESS, STREQ
-
-# Each nonempty line must start with a year number, or a TAB.
-sc_changelog:
-	@grep -n '^[^12	]' $$(find . -maxdepth 2 -name ChangeLog) &&	\
-	  { echo '$(ME): found unexpected prefix in a ChangeLog' 1>&2;	\
-	    exit 1; } || :
-
-# Ensure that dd's definition of LONGEST_SYMBOL stays in sync
-# with the strings from the two affected variables.
-dd_c = $(srcdir)/src/dd.c
-sc_dd_max_sym_length:
-ifneq ($(wildcard $(dd_c)),)
-	@len=$$( (sed -n '/conversions\[\] =$$/,/^};/p' $(dd_c);\
-		 sed -n '/flags\[\] =$$/,/^};/p' $(dd_c) )	\
-		|sed -n '/"/s/^[^"]*"\([^"]*\)".*/\1/p'		\
-	      | wc --max-line-length);				\
-	max=$$(sed -n '/^#define LONGEST_SYMBOL /s///p' $(dd_c)	\
-	      |tr -d '"' | wc --max-line-length);		\
-	if test "$$len" = "$$max"; then :; else			\
-	  echo 'dd.c: LONGEST_SYMBOL is not longest' 1>&2;	\
-	  exit 1;						\
-	fi
-endif
-
-# Many m4 macros names once began with `jm_'.
-# On 2004-04-13, they were all changed to start with gl_ instead.
-# Make sure that none are inadvertently reintroduced.
-sc_prohibit_jm_in_m4:
-	@grep -nE 'jm_[A-Z]'						\
-		$$($(VC_LIST) m4 |grep '\.m4$$'; echo /dev/null) &&	\
-	    { echo '$(ME): do not use jm_ in m4 macro names'		\
-	      1>&2; exit 1; } || :
-
-# Ensure that each root-requiring test is run via the "check-root" rule.
-sc_root_tests:
-	@if test -d tests \
-	      && grep check-root tests/Makefile.am>/dev/null 2>&1; then \
-	t1=sc-root.expected; t2=sc-root.actual;				\
-	grep -nl '^require_root_$$'					\
-	  $$($(VC_LIST) tests) |sed s,tests/,, |sort > $$t1;		\
-	sed -n '/^root_tests =[	 ]*\\$$/,/[^\]$$/p'			\
-	  $(srcdir)/tests/Makefile.am					\
-	    | sed 's/^  *//;/^root_tests =/d'				\
-	    | tr -s '\012\\' '  ' | fmt -1 | sort > $$t2;		\
-	diff -u $$t1 $$t2 || diff=1;					\
-	rm -f $$t1 $$t2;						\
-	test "$$diff"							\
-	  && { echo 'tests/Makefile.am: missing check-root action'>&2;	\
-	       exit 1; } || :;						\
-	fi
-
-headers_with_interesting_macro_defs = \
-  exit.h	\
-  fcntl_.h	\
-  fnmatch_.h	\
-  intprops.h	\
-  inttypes_.h	\
-  lchown.h	\
-  openat.h	\
-  stat-macros.h	\
-  stdint_.h
-
-# Create a list of regular expressions matching the names
-# of macros that are guaranteed by parts of gnulib to be defined.
-.re-defmac:
-	@(cd $(srcdir)/lib;						\
-	  for f in $(headers_with_interesting_macro_defs); do		\
-	    test -f $$f &&						\
-	      sed -n '/^# *define \([^_ (][^ (]*\)[ (].*/s//\1/p' $$f;	\
-	   done;							\
-	 ) | sort -u							\
-	   | grep -Ev 'ATTRIBUTE_NORETURN|SIZE_MAX'			\
-	   | sed 's/^/^# *define /'					\
-	  > $@-t
-	@mv $@-t $@
-
-# Don't define macros that we already get from gnulib header files.
-sc_always_defined_macros: .re-defmac
-	@if test -f $(srcdir)/src/system.h; then			\
-	  trap 'rc=$$?; rm -f .re-defmac; exit $$rc' 0 1 2 3 15;	\
-	  grep -f .re-defmac $$($(VC_LIST))				\
-	    && { echo '$(ME): define the above via some gnulib .h file'	\
-		  1>&2;  exit 1; } || :;				\
-	fi
-
-# Create a list of regular expressions matching the names
-# of files included from system.h.  Exclude a couple.
-.re-list:
-	@sed -n '/^# *include /s///p' $(srcdir)/src/system.h \
-	  | grep -Ev 'sys/(param|file)\.h' \
-	  | sed 's/ .*//;;s/^["<]/^# *include [<"]/;s/\.h[">]$$/\\.h[">]/' \
-	  > $@-t
-	@mv $@-t $@
-
-# Files in src/ should not include directly any of
-# the headers already included via system.h.
-sc_system_h_headers: .re-list
-	@if test -f $(srcdir)/src/system.h; then			\
-	  trap 'rc=$$?; rm -f .re-list; exit $$rc' 0 1 2 3 15;		\
-	  grep -nE -f .re-list						\
-	      $$($(VC_LIST) src |					\
-		 grep -Ev '((copy|system)\.h|parse-gram\.c)$$')		\
-	    && { echo '$(ME): the above are already included via system.h'\
-		  1>&2;  exit 1; } || :;				\
-	fi
-
-# Ensure that each .c file containing a "main" function also
-# calls set_program_name.
-sc_program_name:
-	@if $(VC_LIST_EXCEPT) | grep '\.c$$' > /dev/null; then		\
-	  files=$$(grep -l '^main *(' $$($(VC_LIST_EXCEPT) | grep '\.c$$')); \
-	  grep -LE 'set_program_name *\(m?argv\[0\]\);' $$files		\
-	      | grep . &&						\
-	  { echo '$(ME): the above files do not call set_program_name'	\
-		1>&2; exit 1; } || :;					\
-	else :;								\
-	fi
-
-# Require that the final line of each test-lib.sh-using test be this one:
-# (exit $fail); exit $fail
-# Note: this test requires GNU grep's --label= option.
-sc_require_test_exit_idiom:
-	@if test -f $(srcdir)/tests/test-lib.sh; then			\
-	  die=0;							\
-	  for i in $$(grep -l -F /../test-lib.sh $$($(VC_LIST) tests)); do \
-	    tail -n1 $$i | grep '^(exit \$$fail); exit \$$fail$$' > /dev/null \
-	      && : || { die=1; echo $$i; }				\
-	  done;								\
-	  test $$die = 1 &&						\
-	    { echo 1>&2 '$(ME): the final line in each of the above is not:'; \
-	      echo 1>&2 '(exit $$fail); exit $$fail';			\
-	      exit 1; } || :;						\
-	fi
-
-sc_sun_os_names:
-	@grep -nEi \
-	    'solaris[^[:alnum:]]*2\.(7|8|9|[1-9][0-9])|sunos[^[:alnum:]][6-9]' \
-	    $$($(VC_LIST_EXCEPT)) &&					\
-	  { echo '$(ME): found misuse of Sun OS version numbers' 1>&2;	\
-	    exit 1; } || :
-
-sc_the_the:
-	@grep -ni '\<the ''the\>' $$($(VC_LIST_EXCEPT)) &&		\
-	  { echo '$(ME): found use of "the ''the";' 1>&2;		\
-	    exit 1; } || :
-
-sc_tight_scope:
-	$(MAKE) -C src $@
-
-sc_trailing_blank:
-	@grep -n '[	 ]$$' $$($(VC_LIST_EXCEPT)) &&			\
-	  { echo '$(ME): found trailing blank(s)'			\
-		1>&2; exit 1; } || :
-
-# Match lines like the following, but where there is only one space
-# between the options and the description:
-#   -D, --all-repeated[=delimit-method]  print all duplicate lines\n
-longopt_re = --[a-z][0-9A-Za-z-]*(\[?=[0-9A-Za-z-]*\]?)?
-sc_two_space_separator_in_usage:
-	@grep -nE '^   *(-[A-Za-z],)? $(longopt_re) [^ ].*\\$$'		\
-	    $$($(VC_LIST_EXCEPT)) &&					\
-	  { echo "$(ME): help2man requires at least two spaces between"; \
-	    echo "$(ME): an option and its description"; \
-		1>&2; exit 1; } || :
-
-# Look for diagnostics that aren't marked for translation.
-# This won't find any for which error's format string is on a separate line.
-sc_unmarked_diagnostics:
-	@grep -nE							\
-	    '\<error \([^"]*"[^"]*[a-z]{3}' $$($(VC_LIST_EXCEPT))	\
-	  | grep -v '_''(' &&						\
-	  { echo '$(ME): found unmarked diagnostic(s)' 1>&2;		\
-	    exit 1; } || :
-
-# Avoid useless parentheses like those in this example:
-# #if defined (SYMBOL) || defined (SYM2)
-sc_useless_cpp_parens:
-	@grep -n '^# *if .*defined *(' $$($(VC_LIST_EXCEPT)) &&		\
-	  { echo '$(ME): found useless parentheses in cpp directive'	\
-		1>&2; exit 1; } || :
-
-# Require the latest GPL.
-sc_GPL_version:
-	@grep -n 'either ''version [^3]' $$($(VC_LIST_EXCEPT)) &&	\
-	  { echo '$(ME): GPL vN, N!=3' 1>&2; exit 1; } || :
-
-# Perl-based tests used to exec perl from a #!/bin/sh script.
-# Now they all start with #!/usr/bin/perl and the portability
-# infrastructure is in tests/Makefile.am.  Make sure no old-style
-# script sneaks back in.
-sc_no_exec_perl_coreutils:
-	@if test -f $(srcdir)/tests/Coreutils.pm; then			\
-	  grep '^exec  *\$$PERL.*MCoreutils' $$($(VC_LIST) tests) &&	\
-	    { echo 1>&2 '$(ME): found anachronistic Perl-based tests';	\
-	      exit 1; } || :;						\
-	fi
-
-NEWS_hash = \
-  $$(sed -n '/^\*.* $(PREV_VERSION_REGEXP) ([0-9-]*)/,$$p' \
-     $(srcdir)/NEWS | md5sum -)
-
-# Ensure that we don't accidentally insert an entry into an old NEWS block.
-sc_immutable_NEWS:
-	@if test -f $(srcdir)/NEWS; then				\
-	  test "$(NEWS_hash)" = '$(old_NEWS_hash)' && : ||		\
-	    { echo '$(ME): you have modified old NEWS' 1>&2; exit 1; };	\
-	fi
-
-# Each program that uses proper_name_utf8 must link with
-# one of the ICONV libraries.
-sc_proper_name_utf8_requires_ICONV:
-	@progs=$$(grep -l 'proper_name_utf8 ''("' $$($(VC_LIST_EXCEPT)));\
-	if test "x$$progs" != x; then					\
-	  fail=0;							\
-	  for p in $$progs; do						\
-	    dir=$$(dirname "$$p");					\
-	    base=$$(basename "$$p" .c);					\
-	    grep "$${base}_LDADD.*ICONV)" $$dir/Makefile.am > /dev/null	\
-	      || { fail=1; echo 1>&2 "$(ME): $$p uses proper_name_utf8"; }; \
-	  done;								\
-	  test $$fail = 1 &&						\
-	    { echo 1>&2 '$(ME): the above do not link with any ICONV library'; \
-	      exit 1; } || :;						\
-	fi
-
-# Warn about "c0nst struct Foo const foo[]",
-# but not about "char const *const foo" or "#define const const".
-sc_redundant_const:
-	@grep -E '\bconst\b[[:space:][:alnum:]]{2,}\bconst\b'		\
-		$$($(VC_LIST_EXCEPT)) &&				\
-	    { echo 1>&2 '$(ME): redundant "const" in declarations';	\
-	      exit 1; } || :
-
-sc_const_long_option:
-	@grep '^ *static.*struct option ' $$($(VC_LIST_EXCEPT))		\
-	  | grep -Ev 'const struct option|struct option const' && {	\
-	      echo 1>&2 '$(ME): add "const" to the above declarations'; \
-	      exit 1; } || :
-
-# Update the hash stored above.  Do this after each release and
-# for any corrections to old entries.
-update-NEWS-hash: NEWS
-	perl -pi -e 's/^(old_NEWS_hash = ).*/$${1}'"$(NEWS_hash)/" \
-	  $(srcdir)/cfg.mk
-
-epoch_date = 1970-01-01 00:00:00.000000000 +0000
-# Ensure that the c99-to-c89 patch applies cleanly.
-patch-check:
-	rm -rf src-c89 $@.1 $@.2
-	cp -a src src-c89
-	(cd src-c89; patch -p1 -V never --fuzz=0) < src/c99-to-c89.diff \
-	  > $@.1 2>&1
-	if test "$(REGEN_PATCH)" = yes; then			\
-	  diff -upr src src-c89 | sed 's,src-c89/,src/,'	\
-	    | grep -vE '^(Only in|File )'			\
-	    | perl -pe 's/^((?:\+\+\+|---) \S+\t).*/$${1}$(epoch_date)/;' \
-	       -e 's/^ $$//'					\
-	    > new-diff || : ; fi
-	grep -v '^patching file ' $@.1 > $@.2 || :
-	msg=ok; test -s $@.2 && msg='fuzzy patch' || : ;	\
-	rm -f src-c89/*.o || msg='rm failed';			\
-	$(MAKE) -C src-c89 CFLAGS='-Wdeclaration-after-statement -Werror' \
-	  || msg='compile failure with extra options';		\
-	test "$$msg" = ok && rm -rf src-c89 $@.1 $@.2 || echo "$$msg" 1>&2; \
-	test "$$msg" = ok
-
-# Ensure that date's --help output stays in sync with the info
-# documentation for GNU strftime.  The only exception is %N,
-# which date accepts but GNU strftime does not.
-extract_char = sed 's/^[^%][^%]*%\(.\).*/\1/'
-strftime-check:
-	if test -f $(srcdir)/src/date.c; then				\
-	  grep '^  %.  ' $(srcdir)/src/date.c | sort			\
-	    | $(extract_char) > $@-src;					\
-	  { echo N;							\
-	    info libc date calendar format | grep '^    `%.'\'		\
-	      | $(extract_char); } | sort > $@-info;			\
-	  diff -u $@-src $@-info || exit 1;				\
-	  rm -f $@-src $@-info;						\
-	fi
-
-check-AUTHORS:
-	$(MAKE) -C src $@
-
-# Ensure that we use only the standard $(VAR) notation,
-# not @...@ in Makefile.am, now that we can rely on automake
-# to emit a definition for each substituted variable.
-makefile-check:
-	@grep -nE '@[A-Z_0-9]+@' `find . -name Makefile.am` \
-	  && { echo '$(ME): use $$(...), not @...@' 1>&2; exit 1; } || :
-
-news-date-check: NEWS
-	today=`date +%Y-%m-%d`;						\
-	if head NEWS | grep '^\*.* $(VERSION_REGEXP) ('$$today')'	\
-	    >/dev/null; then						\
-	  :;								\
-	else								\
-	  echo "version or today's date is not in NEWS" 1>&2;		\
-	  exit 1;							\
-	fi
-
-changelog-check:
-	if head ChangeLog | grep 'Version $(VERSION_REGEXP)\.$$'	\
-	    >/dev/null; then						\
-	  :;								\
-	else								\
-	  echo "$(VERSION) not in ChangeLog" 1>&2;			\
-	  exit 1;							\
-	fi
-
-m4-check:
-	@grep -n 'AC_DEFUN([^[]' m4/*.m4 \
-	  && { echo '$(ME): quote the first arg to AC_DEFUN' 1>&2; \
-	       exit 1; } || :
-
-# Verify that all source files using _() are listed in po/POTFILES.in.
-po-check:
-	@if test -f po/POTFILES.in; then				\
-	  grep -E -v '^(#|$$)' po/POTFILES.in				\
-	    | grep -v '^src/false\.c$$' | sort > $@-1;			\
-	  files=;							\
-	  for file in $$($(VC_LIST_EXCEPT)) lib/*.[ch]; do		\
-	    case $$file in						\
-	      *.?|*.??) ;;						\
-	      *) continue;;						\
-	    esac;							\
-	    case $$file in						\
-	    *.[ch])							\
-	      base=`expr " $$file" : ' \(.*\)\..'`;			\
-	      { test -f $$base.l || test -f $$base.y; } && continue;;	\
-	    esac;							\
-	    files="$$files $$file";					\
-	  done;								\
-	  grep -E -l '\b(N?_|gettext *)\([^)"]*("|$$)' $$files		\
-	    | sort -u > $@-2;						\
-	  diff -u $@-1 $@-2 || exit 1;					\
-	  rm -f $@-1 $@-2;						\
-	fi
-
-# In a definition of #define AUTHORS "... and ..." where the RHS contains
-# the English word `and', the string must be marked with `N_ (...)' so that
-# gettext recognizes it as a string requiring translation.
-author_mark_check:
-	@grep -n '^# *define AUTHORS "[^"]* and ' src/*.c |grep -v ' N_ (' && \
-	  { echo '$(ME): enclose the above strings in N_ (...)' 1>&2; \
-	    exit 1; } || :
-
-# Sometimes it is useful to change the PATH environment variable
-# in Makefiles.  When doing so, it's better not to use the Unix-centric
-# path separator of `:', but rather the automake-provided `@PATH_SEPARATOR@'.
-# It'd be better to use `find -print0 ...|xargs -0 ...', but less portable,
-# and there probably aren't many projects with so many Makefile.am files
-# that we'd have to worry about limits on command line length.
-msg = '$(ME): Do not use `:'\'' above; use @PATH_SEPARATOR@ instead'
-makefile_path_separator_check:
-	@grep -n 'PATH=.*:' `find $(srcdir) -name Makefile.am` \
-	  && { echo $(msg) 1>&2; exit 1; } || :
-
-# Check that `make alpha' will not fail at the end of the process.
-writable-files:
-	if test -d $(release_archive_dir); then :; else			\
-	  for file in $(distdir).tar.gz					\
-	              $(release_archive_dir)/$(distdir).tar.gz; do	\
-	    test -e $$file || continue;					\
-	    test -w $$file						\
-	      || { echo ERROR: $$file is not writable; fail=1; };	\
-	  done;								\
-	  test "$$fail" && exit 1 || : ;				\
-	fi
-
-v_etc_file = lib/version-etc.c
-sample-test = tests/sample-test
-texi = doc/$(PACKAGE).texi
-# Make sure that the copyright date in $(v_etc_file) is up to date.
-# Do the same for the $(sample-test) and the main doc/.texi file.
-copyright-check:
-	@if test -f $(v_etc_file); then \
-	  grep 'enum { COPYRIGHT_YEAR = '$$(date +%Y)' };' $(v_etc_file) \
-	    >/dev/null \
-	  || { echo 'out of date copyright in $(v_etc_file); update it' 1>&2; \
-	       exit 1; }; \
-	fi
-	@if test -f $(sample-test); then \
-	  grep '# Copyright (C) '$$(date +%Y)' Free' $(sample-test) \
-	    >/dev/null \
-	  || { echo 'out of date copyright in $(sample-test); update it' 1>&2; \
-	       exit 1; }; \
-	fi
-	@if test -f $(texi); then \
-	  grep 'Copyright @copyright{} .*'$$(date +%Y)' Free' $(texi) \
-	    >/dev/null \
-	  || { echo 'out of date copyright in $(texi); update it' 1>&2; \
-	       exit 1; }; \
-	fi
-
-vc-diff-check:
-	$(VC) diff > vc-diffs || :
-	if test -s vc-diffs; then				\
-	  cat vc-diffs;						\
-	  echo "Some files are locally modified:" 1>&2;		\
-	  exit 1;						\
-	else							\
-	  rm vc-diffs;						\
-	fi
-
-cvs-check: vc-diff-check
-
-maintainer-distcheck:
-	$(MAKE) distcheck
-	$(MAKE) my-distcheck
-
-
-# Don't make a distribution if checks fail.
-# Also, make sure the NEWS file is up-to-date.
-vc-dist: $(local-check) cvs-check maintainer-distcheck
-	$(MAKE) dist
-
-# Use this to make sure we don't run these programs when building
-# from a virgin tgz file, below.
-null_AM_MAKEFLAGS = \
-  ACLOCAL=false \
-  AUTOCONF=false \
-  AUTOMAKE=false \
-  AUTOHEADER=false \
-  MAKEINFO=false
-
-built_programs = $$(cd src && MAKEFLAGS= $(MAKE) -s built_programs.list)
-
-warn_cflags = -Dlint -O -Werror -Wall -Wformat -Wshadow -Wpointer-arith
-bin=bin-$$$$
-
-write_loser = printf '\#!%s\necho $$0: bad path 1>&2; exit 1\n' '$(SHELL)'
-
-TMPDIR ?= /tmp
-t=$(TMPDIR)/$(PACKAGE)/test
-pfx=$(t)/i
-
-# Verify that a twisted use of --program-transform-name=PROGRAM works.
-define install-transform-check
-  rm -rf $(pfx);					\
-  $(MAKE) program_transform_name='s/.*/zyx/'		\
-      prefix=$(pfx) install				\
-    && test "$$(echo $(pfx)/bin/*)" = "$(pfx)/bin/zyx"	\
-    && test "$$(echo $(pfx)/share/man/man1/*)" =	\
-                    "$(pfx)/share/man/man1/zyx.1"
-endef
-
-# Install, then verify that all binaries and man pages are in place.
-# Note that neither the binary, ginstall, nor the ].1 man page is installed.
-define my-instcheck
-  $(MAKE) prefix=$(pfx) install				\
-    && test ! -f $(pfx)/bin/ginstall			\
-    && { fail=0;					\
-      for i in $(built_programs); do			\
-        test "$$i" = ginstall && i=install;		\
-        for j in "$(pfx)/bin/$$i"			\
-                 "$(pfx)/share/man/man1/$$i.1"; do	\
-          case $$j in *'[.1') continue;; esac;		\
-          test -f "$$j" && :				\
-            || { echo "$$j not installed"; fail=1; };	\
-        done;						\
-      done;						\
-      test $$fail = 1 && exit 1 || :;			\
-    }
-endef
-
-# Use -Wformat -Werror to detect format-string/arg-list mismatches.
-# Also, check for shadowing problems with -Wshadow, and for pointer
-# arithmetic problems with -Wpointer-arith.
-# These CFLAGS are pretty strict.  If you build this target, you probably
-# have to have a recent version of gcc and glibc headers.
-# The hard-linking for-loop below ensures that there is a bin/ directory
-# full of all of the programs under test (except the ones that are required
-# for basic Makefile rules), all symlinked to the just-built "false" program.
-# This is to ensure that if ever a test neglects to make PATH include
-# the build srcdir, these always-failing programs will run.
-# Otherwise, it is too easy to test the wrong programs.
-# Note that "false" itself is a symlink to true, so it too will malfunction.
-my-distcheck: $(DIST_ARCHIVES) $(local-check)
-	$(MAKE) syntax-check
-	$(MAKE) check
-	-rm -rf $(t)
-	mkdir -p $(t)
-	GZIP=$(GZIP_ENV) $(AMTAR) -C $(t) -zxf $(distdir).tar.gz
-	cd $(t)/$(distdir)				\
-	  && ./configure --disable-nls			\
-	  && $(MAKE) CFLAGS='$(warn_cflags)'		\
-	      AM_MAKEFLAGS='$(null_AM_MAKEFLAGS)'	\
-	  && $(MAKE) dvi				\
-	  && $(install-transform-check)			\
-	  && $(my-instcheck)				\
-	  && mkdir $(bin)				\
-	  && ($(write_loser)) > $(bin)/loser            \
-	  && chmod a+x $(bin)/loser                     \
-	  && for i in $(built_programs); do		\
-	       case $$i in				\
-		 rm|expr|basename|echo|sort|ls|tr);;	\
-		 cat|dirname|mv|wc);;			\
-		 *) ln $(bin)/loser $(bin)/$$i;;	\
-	       esac;					\
-	     done					\
-	  && ln -sf ../src/true $(bin)/false		\
-	  && PATH=`pwd`/$(bin):$$PATH $(MAKE) -C tests check \
-	  && { test -d gnulib-tests			\
-	         && $(MAKE) -C gnulib-tests check	\
-	         || :; }				\
-	  && rm -rf $(bin)				\
-	  && $(MAKE) distclean
-	(cd $(t) && mv $(distdir) $(distdir).old	\
-	  && $(AMTAR) -zxf - ) < $(distdir).tar.gz
-	diff -ur $(t)/$(distdir).old $(t)/$(distdir)
-	if test -f $(srcdir)/src/c99-to-c89.diff; then			\
-	  cd $(t)/$(distdir)						\
-	    && (cd src && patch -V never --fuzz=0 <c99-to-c89.diff)	\
-	    && ./configure --disable-largefile				\
-	         CFLAGS='-Werror -ansi -Wno-long-long'			\
-	    && $(MAKE);							\
-	fi
-	-rm -rf $(t)
-	@echo "========================"; \
-	echo "$(distdir).tar.gz is ready for distribution"; \
-	echo "========================"
-
-WGET = wget
-WGETFLAGS = -C off
-
-rel-check:
-	tarz=/tmp/rel-check-tarz-$$$$; \
-	md5_tmp=/tmp/rel-check-md5-$$$$; \
-	set -e; \
-	trap 'status=$$?; rm -f $$tarz $$md5_tmp; exit $$status' 0 1 2 3 15; \
-	$(WGET) $(WGETFLAGS) -q --output-document=$$tarz $(url); \
-	echo "$(md5)  -" > $$md5_tmp; \
-	md5sum -c $$md5_tmp < $$tarz
-
-rel-files = $(DIST_ARCHIVES)
-
-gnulib-version = $$(cd $(gnulib_dir) && git describe)
-
-announcement: NEWS ChangeLog $(rel-files)
-	@./build-aux/announce-gen					\
-	    --release-type=$(RELEASE_TYPE)				\
-	    --package=$(PACKAGE)					\
-	    --prev=$(PREV_VERSION)					\
-	    --curr=$(VERSION)						\
-	    --gpg-key-id=$(gpg_key_ID)					\
-	    --news=NEWS							\
-	    --bootstrap-tools=autoconf,automake,flex,gnulib		\
-	    --gnulib-version=$(gnulib-version)				\
-	    $(addprefix --url-dir=, $(url_dir_list))
-
-## ---------------- ##
-## Updating files.  ##
-## ---------------- ##
-
-ftp-gnu = ftp://ftp.gnu.org/gnu
-www-gnu = http://www.gnu.org
-
-# Use mv, if you don't have/want move-if-change.
-move_if_change ?= move-if-change
-
-emit_upload_commands:
-	@echo =====================================
-	@echo =====================================
-	@echo "$(srcdir)/build-aux/gnupload $(GNUPLOADFLAGS) \\"
-	@echo "    --to $(gnu_rel_host):$(PACKAGE) \\"
-	@echo "  $(rel-files)"
-	@echo '# send the /tmp/announcement e-mail'
-	@echo =====================================
-	@echo =====================================
-
-noteworthy = * Noteworthy changes in release ?.? (????-??-??) [?]
-define emit-commit-log
-  printf '%s\n' 'post-release administrivia' '' \
-    '* NEWS: Add header line for next release.' \
-    '* .prev-version: Record previous version.' \
-    '* cfg.mk (old_NEWS_hash): Auto-update.'
-endef
-
-.PHONY: alpha beta major
-alpha beta major: $(local-check) writable-files
-	test $@ = major						\
-	  && { echo $(VERSION) | grep -E '^[0-9]+(\.[0-9]+)+$$'	\
-	       || { echo "invalid version string: $(VERSION)" 1>&2; exit 1;};}\
-	  || :
-	$(MAKE) vc-dist
-	$(MAKE) news-date-check
-	$(MAKE) -s announcement RELEASE_TYPE=$@ > /tmp/announce-$(my_distdir)
-	if test -d $(release_archive_dir); then			\
-	  ln $(rel-files) $(release_archive_dir);		\
-	  chmod a-w $(rel-files);				\
-	fi
-	$(MAKE) -s emit_upload_commands RELEASE_TYPE=$@
-	echo $(VERSION) > $(prev_version_file)
-	$(MAKE) update-NEWS-hash
-	perl -pi -e '$$. == 3 and print "$(noteworthy)\n\n\n"' NEWS
-	$(emit-commit-log) > .ci-msg
-	$(VC) commit -F .ci-msg
@@ -1,7 +1,7 @@
 /* Generate the nondeterministic finite state machine for Bison.

-   Copyright (C) 1984, 1986, 1989, 2000, 2001, 2002, 2004, 2005, 2006, 2007
-   Free Software Foundation, Inc.
+   Copyright (C) 1984, 1986, 1989, 2000-2002, 2004-2007, 2009-2010 Free
+   Software Foundation, Inc.

   This file is part of Bison, the GNU Compiler Compiler.

--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
Joel E. Denny	2d2a7d608e	Version 2.4.1a delayed. * NEWS (2.4.1a): Increment release date as there has been a small delay in getting the announcements and tarballs out.	2010-01-22 13:02:31 -05:00
Joel E. Denny	5ea72c19da	Version 2.4.1a. * NEWS (2.4.2): Rename to... (2.4.1a): ... this for now. Set date. * configure.ac (AM_INIT_AUTOMAKE): Disable gnits for now because it does not like this version name.	2010-01-21 18:53:58 -05:00
Joel E. Denny	97d520633b	* cfg.mk (gnulib_dir): Assume gnulib is a subdirectory.	2010-01-21 18:52:49 -05:00
Joel E. Denny	af8a609a90	maint: automate PACKAGE_COPYRIGHT_YEAR update, and update it. * HACKING (Release Procedure): Update notes on copyright years. * Makefile.am (update-package-copyright-year): New target rule. * build-aux/update-package-copyright-year: New file. * cfg.mk (update-copyright): Add update-package-copyright-year as a dependency.	2010-01-21 16:48:35 -05:00
Joel E. Denny	73edad9a25	* bootstrap: Import improvements from latest gnulib.	2010-01-20 00:26:05 -05:00
Joel E. Denny	9736697d6d	build: require Automake 1.11.1 to avoid a security flaw. * HACKING (Release Procedure): Don't document Automake security flaw here. * configure.ac (AM_INIT_AUTOMAKE): Require 1.11.1, and explain why here.	2010-01-20 00:17:02 -05:00
Joel E. Denny	e2f3fda11a	gnulib: update to latest.	2010-01-19 14:20:12 -05:00
Joel E. Denny	3c0be43411	ChangeLog (2006-09-15): add Odd Arild Olsen's role for push.c. (cherry picked from commit `d6bdb90a2a`)	2010-01-19 11:52:58 -05:00
Joel E. Denny	d45708d418	Thank the developer of the initial push parser implementation. This unfortunate oversight is several years old. * THANKS (Odd Arild Olsen): Add. (cherry picked from commit `326e5cf81e`)	2010-01-15 13:45:08 -05:00
Joel E. Denny	219c26ea51	maint: run "make update-copyright"	2010-01-04 13:59:11 -05:00
Joel E. Denny	f1ceed0774	POSIX: warn if %prec's token was not defined. Reported by Florian Krohm at <http://lists.gnu.org/archive/html/bug-bison/2009-12/msg00005.html>. * NEWS (2.4.2): Document. * src/reader.c (grammar_rule_check): Implement. (grammar_current_rule_prec_set): Add comments explaining that we here assume a %prec identifier is a token, but we still manage to support POSIX. * tests/input.at (%prec's token must be defined): New test group.	2009-12-31 12:49:42 -05:00
Joel E. Denny	d2829fdc04	* HACKING (Release Procedure): Recommend a secure automake.	2009-12-31 12:43:33 -05:00
Joel E. Denny	43dc3c8bc4	YYFAIL: deprecate. * NEWS (2.4.2): Document deprecation and the phase-out plan. * data/lalr1.java (parser::YYStack::YYFAIL): Add comment about deprecation. * data/yacc.c (YYFAIL): Likewise, and suppress warnings about YYFAIL from GCC cpp's -Wunused-macros. * doc/bison.texinfo (Java Action Features): Remove YYFAIL documentation. (cherry picked from commit `1625df5b18`) Conflicts: doc/bison.texinfo src/parse-gram.c src/parse-gram.h	2009-12-22 13:26:15 -05:00
Joel E. Denny	3d04b5673d	Add gcc's -Wundef to test suite and fix another warning from it. * NEWS (2.4.2): Update description of -Wundef fix. * configure.ac (WARN_CXXFLAGS_TEST): New substitution. (WARN_CFLAGS_TEST): New substitution. * data/glr.c: Avoid warning about __STRICT_ANSI__. * tests/atlocal.in (CFLAGS): Use WARN_CFLAGS_TEST instead of WARN_CFLAGS. (CXXFLAGS): Use WARN_CXXFLAGS_TEST instead of WARN_CXXFLAGS. (cherry picked from commit `a603c6e0bb`) Conflicts: tests/atlocal.in	2009-12-16 13:43:59 -05:00
Joel E. Denny	39c2566994	Document gcc -Wundef fix. * NEWS (2.4.2): Here. * THANKS (Jonathan Nieder): Add. (cherry picked from commit `c938d650db`)	2009-12-16 01:58:38 -05:00
Jonathan NiederandJoel E. Denny	1694ac5cf2	Avoid warnings from gcc -Wundef y.tab.c. * data/glr.c: Check if YYENABLE_NLS and YYLTYPE_IS_TRIVIAL are defined before using them. * data/lalr1.cc: Likewise. * data/yacc.c: Likewise. (cherry picked from commit `ae93128c96`)	2009-12-16 01:58:21 -05:00
Joel E. Denny	dfff662817	Import M4 detection fix from Autoconf. Reported by Eric Blake. * m4/m4.m4: Copy serial 10.	2009-12-15 19:12:16 -05:00
Joel E. Denny	adf1725fdb	Enable assertion output and --disable-assert for configure. * bootstrap.conf (gnulib_modules): Add assert module. * src/system.h (aver): Define as assert, and summarize the discussion on this issue. (cherry picked from commit `ca01f454f0`) Conflicts: src/system.h	2009-12-14 18:23:36 -05:00
Joel E. Denny	7aaf9ce758	portability: use va_start and va_end in the same function. * src/complain.c (error_message): Move va_end from here... (ERROR_MESSAGE): ... to here. (cherry picked from commit `786578e394`)	2009-10-11 16:34:44 -04:00
Joel E. Denny	2ceb8c617c	tests: skip tests of file names that platform does not support. Reported by Michael Raskin at <http://lists.gnu.org/archive/html/bug-bison/2009-09/msg00001.html>. * THANKS (Michael Raskin): Add. * tests/output.at (AT_CHECK_OUTPUT_FILE_NAME): Fix. Cygwin used to fail at least for file names containing ":" or "\".	2009-10-04 23:14:29 -04:00
Akim DemailleandJoel E. Denny	87b9c9bc43	doc: spell checking. * doc/bison.texinfo: here. (cherry picked from commit `c781580d07`) Conflicts: doc/bison.texinfo	2009-09-25 23:36:46 -04:00
Joel E. Denny	dc25ce6bb1	tests: clean up push.at test group titles. * tests/push.at: Remove "Push Parsing: " from test group titles because these are already under the banner "Push Parsing Tests". (cherry picked from commit `00d80a9ced`)	2009-09-13 15:26:34 -04:00
Akim Demaille	ace92a2691	NEWS: Internationalization. * NEWS (2.4.2): Add "Internationalization" item. (cherry picked from commit `2755de8fec`)	2009-09-03 11:09:15 +02:00
Akim Demaille	397bb3932f	bootstrap: fix/improve find_tool. * bootstrap (find_tool): Improve error messages. Fix typo about find_tool_names.	2009-09-03 11:08:57 +02:00
Eric Blake	bbbbe221d7	scan-gram: avoid portability trap with ctype usage. * src/scan-gram.l (<SC_ESCAPED_STRING,SC_ESCAPED_CHARACTER>): Avoid compiler warning. Signed-off-by: Eric Blake <[email protected]>	2009-08-27 20:16:07 -06:00
Joel E. Denny	4d7b57b527	tests: use perl for printing special sequences to files. And skip tests if perl is not available. This is better than playing tricks with shell portability. Suggested by Akim Demaille. * tests/input.at (Bad escapes in literals): Use it here for special characters. (cherry picked from commit `b70c7fb4e1`) Conflicts: tests/input.at	2009-08-27 03:59:06 -04:00
Joel E. Denny	321fe707f4	Use locale when quoting. * src/scan-gram.l (SC_ESCAPED_STRING, SC_ESCAPED_CHARACTER): Use quote rather than implementing quoting here. (cherry picked from commit `e6c849d82a`)	2009-08-21 20:37:26 -04:00
Eric Blake	1266b63674	Make previous patch more robust. * src/output.c (ARRAY_CARDINALITY): New macro, copied from argmatch.h. (output_skeleton): Use it. Suggested by Akim Demaille. Signed-off-by: Eric Blake <[email protected]>	2009-08-20 16:43:07 -06:00
Eric Blake	b9ad39c1fb	Import latest m4/m4.m4. * m4/m4.m4: Copy from autoconf 2.64. * configure.ac (M4_GNU_OPTION): New define. * src/output.c (output_skeleton): Use it to resolve FIXME. * NEWS: Mention this. Signed-off-by: Eric Blake <[email protected]>	2009-08-20 08:44:40 -06:00
Joel E. Denny	b1a4261e6d	Fix complaints about escape sequences. Discussed starting at <http://lists.gnu.org/archive/html/bison-patches/2009-08/msg00036.html>. * src/scan-gram.l (SC_ESCAPED_STRING, SC_ESCAPED_CHARACTER): For a \0 and similar escape sequences meaning the null character, report an invalid escape sequence instead of an invalid null character because the latter does not actually appear in the user's input. In all escape sequence complaints, don't escape the initial backslash, and don't quote when the sequence appears at the end of the complaint line unless there's whitespace that quotearg won't escape. Consistently say "invalid" not "unrecognized". * tests/input.at (Bad escapes in literals): New. (cherry picked from commit `c2724603c9`) Conflicts: tests/input.at	2009-08-19 21:11:35 -04:00
Akim Demaille	a022ff4186	doc: %initial-action to initialize yylloc. Reported by Bill Allombert. * doc/bison.texinfo: Set fill-column to 76. (Location Type): Document the use of %initial-action to initialize yylloc. (cherry picked from commit `d59e456dbf`)	2009-08-19 13:37:20 +02:00
Joel E. Denny	b5b94bd5e6	maint: update for gnulib's recent update-copyright changes * gnulib: Update. * .x-update-copyright (COPYING): Add as it's no longer implied when .x-update-copyright is present. * cfg.mk (update-copyright-local): Remove, now ignored. (update-copyright): Declare update-b4-copyright as a dependency. (cherry picked from commit `c67e466f9d`)	2009-08-18 18:50:59 -04:00
Akim Demaille	b9e42bb439	build: lower gettext requirements. Bison was uselessly requiring the formatstring macros from gettext, which resulted in mo files not being installed on systems that perfectly supported Bison mo files. Lower the requirement. http://lists.gnu.org/archive/html/bug-bison/2009-08/msg00006.html * configure.ac: Require need-ngettext instead of need-formatstring-macros. Reported by Martin Jabocs. Suggested by Bruno Haible. * INSTALL: Restructure. (Internationalization): New.	2009-08-17 09:48:11 +02:00
Joel E. Denny	75ac158b82	maint: fix use of copyright year intervals. * gnulib: Update. * bootstrap.conf (gnulib_modules): Update getopt to getopt-gnu as now recommended in gnulib/NEWS. * build-aux/update-b4-copyright: Fix. * cfg.mk (update-copyright-env): Configure update-copyright.	2009-08-14 18:46:16 -04:00
Akim Demaille	f23cd66008	distcheck: fix. * examples/calc++/Makefile.am: (EXTRA_DIST): Ship calc.stamp.	2009-08-12 14:09:15 +02:00
Joel E. Denny	9874460819	maint: run "make update-copyright" But first... * .x-update-copyright (^data/m4sugar/): Add, because these files are from Autoconf.	2009-08-06 20:17:42 -04:00
Joel E. Denny	915becaa5d	maint: make update-b4-copyright easier to use * build-aux/update-b4-copyright: In warnings, report line numbers rather than character positions. * cfg.mk (update-copyright-local): Set to update-b4-copyright so that update-copyright runs it. * gnulib: Update. (cherry picked from commit `a1a9422d4a`)	2009-08-06 19:29:01 -04:00
Joel E. Denny	ae50972393	maint: clean up update-b4-copyright code * build-aux/update-b4-copyright: Do not accept 2-digit UPDATE_COPYRIGHT_YEAR, which was not handled correctly. Don't accept a `[' in a b4_copyright argument. Format code more consistently. Don't assume b4*copyright never occurs. (cherry picked from commit `0b61a8ec18`)	2009-08-05 20:02:16 -04:00
Joel E. Denny	c9e0a88079	maint: automate b4_copyright updates. * Makefile.am (update-b4-copyright): New target rule. * build-aux/Makefile.am (EXTRA_DIST): Add update-b4-copyright. * build-aux/update-b4-copyright: New. * data/yacc.c: Remove stray characters around b4_copyright invocations. (cherry picked from commit `ac2def5602`) Conflicts: data/yacc.c	2009-08-04 21:44:25 -04:00
Joel E. Denny	50bcb22c4c	maint: automate annual package-wide copyright-year update. * .x-update-copyright: New. * Makefile.am (EXTRA_DIST): Remove maint.mk. * bootstrap.conf (gnulib_modules): Add maintainer-makefile and update-copyright. Remove gnumakefile, which is implied by maintainer-makefile. * cfg.mk (bootstrap-tools): Copy from old maint.mk. * gnulib: Update. * maint.mk: Remove, now copied from gnulib. * examples/extexi: Add missing "(C)" in copyright statement so update-copyright can recognize it. * src/LR0.h: Likewise. * src/print.h: Likewise. * src/print_graph.h: Likewise. * src/gram.c: Add missing comma in copyright statement. * src/gram.h: Likewise.	2009-08-04 18:00:39 -04:00
Joel E. Denny	cfc9e431c3	Fix "make distcheck". * examples/calc++/Makefile.am: Say $(srcdir)/calc.stamp instead of just calc.stamp.	2009-08-04 15:09:53 -04:00
Joel E. Denny	42f8609bbd	Pacify "gcc -Wunused" for the input function from Flex. Reported by Alex Rozenman. This warning shows up with gcc-4.3.0 and later. * src/scan-code.l: Add "%option noinput", which I cannot find in the Flex manual, but which Flex has supported since at least as far back as 2.5.4. However, if any of our developers still use Flex 2.5.4, they'll need to stop configuring with --enable-gcc-warnings because "%option noinput" didn't work correctly until Flex 2.5.6. * src/scan-gram.l: Likewise. * src/scan-skel.l: Likewise.	2009-08-01 18:03:45 -04:00
Akim Demaille	9e408f848d	build: avoid concurrent extraction of calc++. * examples/calc++/Makefile.am (calc.stamp): New. Depend on it to create the sources of calc++ so that concurrent builds don't launch several "extexi" in parallel. Not only this is inefficient, this also builds incorrect sources with several extractions mixed together. Cherry-picked from `5ece73eaa1`.	2009-06-29 20:41:55 +02:00
Akim Demaille	48578d6c12	hash: check insertion for memory exhaustion. * src/uniqstr.c (uniqstr_new): New.	2009-06-25 06:57:26 +02:00
Akim Demaille	914e713d07	hash: check insertion for memory exhaustion. * src/muscle-tab.c (muscle_insert, muscle_grow) * src/state.c (state_hash_insert): Check the return value of hash_insert.	2009-06-25 06:57:26 +02:00
Akim Demaille	94505fb7e2	gnulib: update. * gnulib: Update to latest. * lib/.cvsignore, lib/.gitignore, m4/.cvsignore, * m4/.gitignore: Regen. * src/symtab.c (symbol_from_uniqstr, semantic_type_from_uniqstr): Call xalloc_die on hash_insert failures. Requested by the new __warn_unused_result__ attribute of hash_insert.	2009-06-25 06:57:25 +02:00
Joel E. Denny	1bcbca4368	* data/c++.m4: Update copyright year.	2009-05-22 01:49:01 -04:00
Joel E. Denny	a17352a9da	Handle a trailing `:' in a user-supplied C++ namespace better. * data/c++.m4 (b4_namespace_close): Don't let it be printed among the closing braces here. This fix might make the generated code easier to debug, but otherwise it should be insignificant because a trailing `:' is a C++ error already. (cherry picked from commit `8c221795af`)	2009-05-19 18:21:07 -04:00
Akim Demaille	c984dee8d1	doc: use C++ headers. * doc/bison.texinfo (Calc++ Scanner): Prefer C++ headers to C headers.	2009-05-11 08:52:26 +02:00
Joel E. Denny	cefb18280b	Declare %code to be a permanent feature. * NEWS (2.4.2): Here. * doc/bison.texinfo (Prologue Alternatives): Don't say it's experimental. (Decl Summary): Likewise.	2009-05-01 02:51:31 -04:00
Akim Demaille	2f3064f08e	doc: minor fixes. * doc/bison.texinfo (Decl Summary): Fix entry about %debug. (Table of Symbols): Remove duplicate entry for %debug.	2009-04-14 08:27:55 +02:00
Eric Blake	ab3a683f05	Work around autoconf 2.63b bug in testsuite. * tests/output.at (AT_CHECK_OUTPUT_FILE_NAME): Avoid tripping autoconf bug related to # in test. Signed-off-by: Eric Blake <[email protected]>	2009-04-08 21:29:54 -06:00