bootstrap - m4 - Git at Google

 #! /bin/sh

 # bootstrap (GNU M4) version 2008-04-15
 # Copyright (C) 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
 # License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
 # This is free software: you are free to change and redistribute it.
 # There is NO WARRANTY, to the extent permitted by law.

 # Written by Gary V. Vaughan  <gary@gnu.org>

 # This file is part of GNU M4.
 #
 # GNU M4 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.
 #
 # GNU M4 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/>.

 # Usage: $progname [options]

 # -f      --force            bootstrap even when sources are not from git
 # -p ARG  --download-po=ARG  whether to download pofiles [yes]
 # -v      --version          print version information
 # -h,-?   --help             print short or long help message

 # For --download-po, ARG can also be `no' to skip pofile downloads,
 # `only' to just update pofiles, or a set of locales to add or update.

 # You can also set the following variables to help $progname
 # locate the right tools:
 #   AUTOPOINT, AUTORECONF, AWK, GNULIB_TOOL, LIBTOOLIZE, M4, RM, SED, WGET

 # This script bootstraps a git or CVS checkout of GNU M4 by correctly calling
 # out to parts of the GNU Build Platform.  Currently this requires GNU
 # Gettext 0.16 or better, Autoconf 2.62 or better, GNU M4 1.4.5 or better,
 # Automake 1.10.1 or better, Libtool 2.2 or better,
 # and the latest git or CVS checkout of Gnulib.
 # Libtool must be installed; either with the same --prefix as
 # automake, or made accessible to aclocal's search path via
 # $AUTOMAKE_prefix/share/aclocal/dirlist.

 # Report bugs to <bug-m4@gnu.org>

 : ${AUTOPOINT=autopoint}
 : ${AUTORECONF=autoreconf}
 : ${AWK=awk}
 : ${GNULIB_TOOL=gnulib-tool}
 : ${LIBTOOLIZE=libtoolize}
 : ${M4=m4}
 : ${RM=rm -f}
 : ${SED=sed}
 : ${WGET=wget}
 export WGET

 : ${DOWNLOAD_PO=yes}

 # Ensure file names are sorted consistently across platforms.
 # Also, ensure diagnostics are in English, e.g., "wget --help" below.
 LC_ALL=C
 export LC_ALL

 package=m4
 ltdldir=ltdl
 config_aux_dir=build-aux
 config_macro_dir=$ltdldir/m4
 bailout_cb=:

 # List dependencies here too; we don't extract them, otherwise dependent
 # modules could end up being imported to src/ *and* gnu/!
 src_modules='getopt version-etc-fsf version-etc xstrtol'

 dirname="s,/[^/]*$,,"
 basename="s,^.*/,,g"

 # Work around backward compatibility issue on IRIX 6.5. On IRIX 6.4+, sh
 # is ksh but when the shell is invoked as "sh" and the current value of
 # the _XPG environment variable is not equal to 1 (one), the special
 # positional parameter $0, within a function call, is the name of the
 # function.
 progpath="$0"

 # The name of this program:
 progname=`echo "$progpath" | $SED "$basename"`
 PROGRAM=bootstrap

 # Detect whether this is a version control system checkout or a tarball
 vcs_only_file=HACKING

 # func_echo arg...
 # Echo program name prefixed message.
 func_echo ()
 {
     echo $progname: ${1+"$@"}
 }

 # func_error arg...
 # Echo program name prefixed message to standard error.
 func_error ()
 {
     echo $progname: ${1+"$@"} >&2
 }

 # func_fatal_error arg...
 # Echo program name prefixed message to standard error, and exit.
 func_fatal_error ()
 {
     func_error ${1+"$@"}
     exit $EXIT_FAILURE
 }

 # func_verbose arg...
 # Echo program name prefixed message in verbose mode only.
 func_verbose ()
 {
     $opt_verbose && func_error ${1+"$@"}
 }

 # func_missing_arg argname
 # Echo program name prefixed message to standard error and set global
 # exit_cmd.
 func_missing_arg ()
 {
    func_error "missing argument for $1"
    exit_cmd=exit
 }

 # func_fatal_help arg...
 # Echo program name prefixed message to standard error, followed by
 # a help hint, and exit.
 func_fatal_help ()
 {
     func_error ${1+"$@"}
     func_fatal_error "Try \`$progname --help' for more information."
 }

 # func_missing_arg argname
 # Echo program name prefixed message to standard error and set global
 # exit_cmd.
 func_missing_arg ()
 {
    func_error "missing argument for $1"
    exit_cmd=exit
 }

 # func_usage
 # Echo short help message to standard output and exit.
 func_usage ()
 {
     $SED '/^# Usage:/,/# -h/ {
 	s/^# //; s/^# *$//;
 	s/\$progname/'$progname'/;
 	p;
     }; d' < "$progpath"
     echo
     echo "run \`$progname --help | more' for full usage"
     exit $EXIT_SUCCESS
 }

 # func_help
 # Echo long help message to standard output and exit.
 func_help ()
 {
     $SED '/^# Usage:/,/# Report bugs to/ {
 	s/^# //; s/^# *$//;
 	s/\$progname/'$progname'/;
 	p;
      }; d' < "$progpath"
     exit $EXIT_SUCCESS
 }

 # func_version
 # Echo version message to standard output and exit.
 func_version ()
 {
     $SED '/^# '$PROGRAM' (GNU /,/# Written by / {
 	s/^# //;
 	s/\((C)\)[ 0-9,-]*\( [1-9][0-9]*\)/\1\2/;
 	p;
      }; d' < "$progpath"
      exit $EXIT_SUCCESS
 }

 # func_update
 # Copy $1 to $2 if it is newer.
 func_update ()
 {
   if test -f "$2" && cmp -s "$1" "$2" ; then
     func_verbose "$2 is up-to-date"
   else
     func_echo "copying $1 -> $2"
     cp "$1" "$2"
   fi
 }

 # Parse options once, thoroughly.  This comes as soon as possible in
 # the script to make things like `bootstrap --version' happen quickly.
 {
   # sed scripts:
   my_sed_single_opt='1s/^\(..\).*$/\1/;q'
   my_sed_single_rest='1s/^..\(.*\)$/\1/;q'
   my_sed_long_opt='1s/^\(--[^=]*\)=.*/\1/;q'
   my_sed_long_arg='1s/^--[^=]*=//'

   # this just eases exit handling
   while test $# -gt 0; do
     opt="$1"
     shift
     case $opt in
       -p|--download-po)
 			test $# = 0 && func_missing_arg $opt && break
 			case $1 in
 			  0|[Nn]*|[Ff]*) DOWNLOAD_PO=no ;;
 			  [Oo]*)	 DOWNLOAD_PO=only ;;
 			esac
 			;;

       # Separate optargs to long options:
       --download-po=*)
 			arg=`echo "$opt" | $SED "$my_sed_long_arg"`
 			opt=`echo "$opt" | $SED "$my_sed_long_opt"`
 			set -- "$opt" "$arg" ${1+"$@"}
 			;;

       # Separate optargs to short options:
       -p*)
 			arg=`echo "$opt" |$SED "$my_sed_single_rest"`
 			opt=`echo "$opt" |$SED "$my_sed_single_opt"`
 			set -- "$opt" "$arg" ${1+"$@"}
 			;;

       -f|--force)	vcs_only_file=					;;
       -\?|-h)		func_usage					;;
       --help)		func_help					;;
       --version)	func_version					;;
       --)		break						;;
       -*)		func_fatal_help "unrecognized option \`$opt'"	;;
       *)		set -- "$opt" ${1+"$@"};	break		;;
     esac
   done

   # Bail if the options were screwed
   $exit_cmd $EXIT_FAILURE

   if test -n "$vcs_only_file" && test ! -r "$vcs_only_file"; then
     func_fatal_error \
       "Bootstrapping from a non-version-control distribution is risky."
   fi
 }

 ## ------------------------------ ##
 ## Fetch translations.            ##
 ## (taken from GNU tar bootstrap) ##
 ## ------------------------------ ##

 func_get_translations()
 {
   subdir=$1
   domain=$2
   po_file=$3

   url=http://translationproject.org/domain/$2.html
   baseurl=`expr "$url" : '\(.*\)/.*'`

   func_echo "getting translations into $subdir for $domain..."

   case $po_file in
     '') (cd $subdir && rm -f dummy `ls | sed -n '/\.gmo$/p; /\.po/p'`);;
   esac &&

   $WGET -nv --cache=off -O "$subdir/$domain.html" "$url" &&

   sed -n 's|.*href="\(.*\)/\([^/][^/]*\)/'"$domain"'-\([^/"]*\)\.[^."]*\.po".*|\2:\3:\1|p' <"$subdir/$domain.html" |
   sort -t: -k 1,1 -k 2,2n -k2,2 -k3,3n -k3,3 -k4,4n -k4,4 -k5,5n -k5.5 |
   $AWK -F: '
     { if (lang && $1 != lang) print lang, ver, subdir }
     { lang = $1; ver = $2; subdir = $3 }
     END { if (lang) print lang, ver, subdir }
   ' | $AWK -v domain="$domain" -v po_file="$po_file" -v baseurl="$baseurl" -v subdir="$subdir" '
     {
       lang = $1
       if (po_file == (lang ".po")) next

       ver = $2
       urlfmt = ""
       printf "$WGET -nv --cache=off -O %s/%s.po %s/%s/%s/%s-%s.%s.po &&\n", subdir, lang, baseurl, $3, lang, domain, ver, lang
     }
     END { print ":" }
   ' |
   sh &&
   ls "$subdir"/*.po | sed 's|.*/||; s|\.po$||' >"$subdir/LINGUAS" &&
   rm "$subdir/$domain.html"
 }

 ## ------------------------------ ##
 ## Update translations.           ##
 ## (taken from GNU tar bootstrap) ##
 ## ------------------------------ ##

 func_update_po ()
 {
     if test $# = 1; then
       case $1 in
 	*.po)  POFILE=$1    ;;
 	*)     POFILE=$1.po ;;
       esac
       func_get_translations ./po $package "$POFILE" &&
       LANG=`expr $POFILE : '\(.*\)\.po'` &&
       { grep -q $LANG po/LINGUAS ||
 	(echo $LANG; cat po/LINGUAS) | sort -o po/LINGUAS; }
     else
       func_get_translations ./po $package
     fi
 }

 case $DOWNLOAD_PO in
   no)   ;;
   only) func_update_po; exit 0 ;;
   yes)  func_update_po ;;
   *)    func_update_po $DOWNLOAD_PO ;;
 esac

 ## ---------------- ##
 ## Version control. ##
 ## ---------------- ##

 # gnulib-tool updates ltdl/m4/.{git,cvs}ignore and gnu/.{git,cvs}ignore, and
 # keeping generated files under version control does not make sense.  Since
 # gnu is entirely ignored, we only need to prepopulate the ltdl/m4 ignore
 # files with generated files not tracked by gnulib-tool.
 if test -f $config_macro_dir/.gitignore ; then
   :
 else
   func_echo "creating initial $config_macro_dir/.cvsignore"
   cat > $config_macro_dir/.cvsignore <<\EOF
 # files created by gnulib, but that gnulib doesn't track
 *~
 .cvsignore
 .gitignore
 gnulib-comp.m4
 # files manually imported, rather than using gnulib-tool
 getopt.m4
 xstrtol.m4
 # files created by autopoint
 codeset.m4
 gettext.m4
 glibc2.m4
 glibc21.m4
 iconv.m4
 intdiv0.m4
 intl.m4
 intldir.m4
 intmax.m4
 inttypes-pri.m4
 inttypes_h.m4
 lcmessage.m4
 lib-ld.m4
 lib-link.m4
 lib-prefix.m4
 lock.m4
 longdouble.m4
 longlong.m4
 nls.m4
 po.m4
 printf-posix.m4
 progtest.m4
 size_max.m4
 stdint_h.m4
 uintmax_t.m4
 ulonglong.m4
 visibility.m4
 wchar_t.m4
 wint_t.m4
 xsize.m4
 # files created by libtoolize
 argz.m4
 libtool.m4
 ltdl.m4
 ltoptions.m4
 ltsugar.m4
 ltversion.m4
 lt~obsolete.m4
 # gnulib-tool edits below here
 EOF
   func_echo "creating initial $config_macro_dir/.gitignore"
   cp $config_macro_dir/.cvsignore $config_macro_dir/.gitignore
 fi

 # 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
     :
   elif (git-merge-changelog --version) >/dev/null 2>/dev/null ; then
     func_echo "initializing git-merge-changelog driver"
     git config merge.merge-changelog.name 'GNU-style ChangeLog merge driver'
     git config merge.merge-changelog.driver 'git-merge-changelog %O %A %B'
   else
     func_echo "consider installing git-merge-changelog from gnulib"
   fi
 fi

 ## ---------- ##
 ## Autopoint. ##
 ## ---------- ##

 # Released autopoint has the tendency to install macros that have been
 # obsoleted in current gnulib, so run this before gnulib-tool.
 func_echo "running: $AUTOPOINT --force"
 $AUTOPOINT --force

 ## ----------- ##
 ## Libtoolize. ##
 ## ----------- ##

 # Autoreconf runs aclocal before libtoolize, which causes spurious
 # warnings if the initial aclocal is confused by the libtoolized
 # (or worse out-of-date) macro directory.
 func_echo "running: $LIBTOOLIZE --force --copy --install"
 ${LIBTOOLIZE} --force --copy --install

 ## ---------------------------- ##
 ## Find the gnulib module tree. ##
 ## ---------------------------- ##

 case $GNULIB_TOOL in
     /*  )  gnulibdir=$GNULIB_TOOL ;;		# absolute
     */* )  gnulibdir=`pwd`/$GNULIB_TOOL ;;	# relative
     *   )  gnulibdir=`which "$GNULIB_TOOL"` ;;	# PATH search
 esac

 # Follow symlinks
 while test -h "$gnulibdir"; do

     # Resolve symbolic link.
     sedexpr1='s, -> ,#%%#,'
     sedexpr2='s,^.*#%%#\(.*\)$,\1,p'
     linkval=`ls -l "$gnulibdir" | $SED "$sedexpr1" | $SED -n "$sedexpr2"`
     test -n "$linkval" || break

     case "$linkval" in
 	/* ) gnulibdir="$linkval" ;;
 	* )  gnulibdir=`echo "$gnulibdir" | sed -e 's,/[^/]*$,,'`/"$linkval" ;;
     esac

 done

 gnulibdir=`echo "$gnulibdir" | $SED "$dirname"`


 ## ---------------------- ##
 ## Import Gnulib modules. ##
 ## ---------------------- ##

 func_echo "running: ${GNULIB_TOOL} --update"
 ${GNULIB_TOOL} --update


 ## --------------------------------- ##
 ## Copy additional src only modules. ##
 ## --------------------------------- ##

 func_echo "fetching modules for src directory"

 for file in `${GNULIB_TOOL} --extract-filelist $src_modules`; do

     dest=`echo $file | $SED "$basename"`
     case $file in
 	lib/*) dest=src/$dest ;;
 	m4/*)  dest=$config_macro_dir/$dest ;;
 	*)     func_echo "Unknown file: $file"
 	       exit 1
 	       ;;
     esac

     # Be sure to show all copying errors before bailing out
     if test -f $gnulibdir/$file; then
 	func_echo "copying file \`$dest'"
 	cp $gnulibdir/$file $dest
     else
 	func_error "$gnulibdir/$file does not exist"
 	bailout_cb="exit 1"
     fi
 done
 $bailout_cb


 ## ----------- ##
 ## Autoreconf. ##
 ## ----------- ##

 # Disable autopoint and libtoolize, since they were already done above.
 func_echo "running: AUTOPOINT=true LIBTOOLIZE=true " \
     "$AUTORECONF --force --verbose --install --no-recursive"
 AUTOPOINT=true LIBTOOLIZE=true \
   $AUTORECONF --force --verbose --install --no-recursive


 ## ---------------------------------------- ##
 ## Gnulib is more up-to-date than automake. ##
 ## ---------------------------------------- ##

 func_update "$gnulibdir"/build-aux/config.guess $config_aux_dir/config.guess
 func_update "$gnulibdir"/build-aux/config.sub $config_aux_dir/config.sub
 func_update "$gnulibdir"/build-aux/depcomp $config_aux_dir/depcomp
 func_update "$gnulibdir"/build-aux/install-sh $config_aux_dir/install-sh
 func_update "$gnulibdir"/build-aux/mdate-sh $config_aux_dir/mdate-sh
 func_update "$gnulibdir"/build-aux/missing $config_aux_dir/missing
 func_update "$gnulibdir"/build-aux/texinfo.tex $config_aux_dir/texinfo.tex
 func_update "$gnulibdir"/build-aux/po/Makefile.in.in po/Makefile.in.in
 func_update "$gnulibdir"/build-aux/po/remove-potcdate.sin po/remove-potcdate.sin
 func_update "$gnulibdir"/doc/COPYINGv3 COPYING
 func_update "$gnulibdir"/doc/INSTALL INSTALL


 ## ------- ##
 ## Wrapup. ##
 ## ------- ##

 if test x"$DOWNLOAD_PO" != xno; then
   func_echo "If your pofiles are up-to-date, you can rerun bootstrap"
   func_echo "as \`DOWNLOAD_PO=no $progname' to avoid redownloading."
 fi

 exit 0

 # Local variables:
 # eval: (add-hook 'write-file-hooks 'time-stamp)
 # time-stamp-start: "# bootstrap (GNU M4) version "
 # time-stamp-format: "%:y-%02m-%02d"
 # time-stamp-end: "$"
 # End:
	#! /bin/sh

	# bootstrap (GNU M4) version 2008-04-15
	# Copyright (C) 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
	# License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
	# This is free software: you are free to change and redistribute it.
	# There is NO WARRANTY, to the extent permitted by law.

	# Written by Gary V. Vaughan <gary@gnu.org>

	# This file is part of GNU M4.
	#
	# GNU M4 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.
	#
	# GNU M4 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/>.

	# Usage: $progname [options]

	# -f --force bootstrap even when sources are not from git
	# -p ARG --download-po=ARG whether to download pofiles [yes]
	# -v --version print version information
	# -h,-? --help print short or long help message

	# For --download-po, ARG can also be `no' to skip pofile downloads,
	# `only' to just update pofiles, or a set of locales to add or update.

	# You can also set the following variables to help $progname
	# locate the right tools:
	# AUTOPOINT, AUTORECONF, AWK, GNULIB_TOOL, LIBTOOLIZE, M4, RM, SED, WGET

	# This script bootstraps a git or CVS checkout of GNU M4 by correctly calling
	# out to parts of the GNU Build Platform. Currently this requires GNU
	# Gettext 0.16 or better, Autoconf 2.62 or better, GNU M4 1.4.5 or better,
	# Automake 1.10.1 or better, Libtool 2.2 or better,
	# and the latest git or CVS checkout of Gnulib.
	# Libtool must be installed; either with the same --prefix as
	# automake, or made accessible to aclocal's search path via
	# $AUTOMAKE_prefix/share/aclocal/dirlist.

	# Report bugs to <bug-m4@gnu.org>

	: ${AUTOPOINT=autopoint}
	: ${AUTORECONF=autoreconf}
	: ${AWK=awk}
	: ${GNULIB_TOOL=gnulib-tool}
	: ${LIBTOOLIZE=libtoolize}
	: ${M4=m4}
	: ${RM=rm -f}
	: ${SED=sed}
	: ${WGET=wget}
	export WGET

	: ${DOWNLOAD_PO=yes}

	# Ensure file names are sorted consistently across platforms.
	# Also, ensure diagnostics are in English, e.g., "wget --help" below.
	LC_ALL=C
	export LC_ALL

	package=m4
	ltdldir=ltdl
	config_aux_dir=build-aux
	config_macro_dir=$ltdldir/m4
	bailout_cb=:

	# List dependencies here too; we don't extract them, otherwise dependent
	# modules could end up being imported to src/ and gnu/!
	src_modules='getopt version-etc-fsf version-etc xstrtol'

	dirname="s,/[^/]*$,,"
	basename="s,^.*/,,g"

	# Work around backward compatibility issue on IRIX 6.5. On IRIX 6.4+, sh
	# is ksh but when the shell is invoked as "sh" and the current value of
	# the _XPG environment variable is not equal to 1 (one), the special
	# positional parameter $0, within a function call, is the name of the
	# function.
	progpath="$0"

	# The name of this program:
	progname=`echo "$progpath" \| $SED "$basename"`
	PROGRAM=bootstrap

	# Detect whether this is a version control system checkout or a tarball
	vcs_only_file=HACKING

	# func_echo arg...
	# Echo program name prefixed message.
	func_echo ()
	{
	echo $progname: ${1+"$@"}
	}

	# func_error arg...
	# Echo program name prefixed message to standard error.
	func_error ()
	{
	echo $progname: ${1+"$@"} >&2
	}

	# func_fatal_error arg...
	# Echo program name prefixed message to standard error, and exit.
	func_fatal_error ()
	{
	func_error ${1+"$@"}
	exit $EXIT_FAILURE
	}

	# func_verbose arg...
	# Echo program name prefixed message in verbose mode only.
	func_verbose ()
	{
	$opt_verbose && func_error ${1+"$@"}
	}

	# func_missing_arg argname
	# Echo program name prefixed message to standard error and set global
	# exit_cmd.
	func_missing_arg ()
	{
	func_error "missing argument for $1"
	exit_cmd=exit
	}

	# func_fatal_help arg...
	# Echo program name prefixed message to standard error, followed by
	# a help hint, and exit.
	func_fatal_help ()
	{
	func_error ${1+"$@"}
	func_fatal_error "Try \`$progname --help' for more information."
	}

	# func_missing_arg argname
	# Echo program name prefixed message to standard error and set global
	# exit_cmd.
	func_missing_arg ()
	{
	func_error "missing argument for $1"
	exit_cmd=exit
	}

	# func_usage
	# Echo short help message to standard output and exit.
	func_usage ()
	{
	$SED '/^# Usage:/,/# -h/ {
	s/^# //; s/^# *$//;
	s/\$progname/'$progname'/;
	p;
	}; d' < "$progpath"
	echo
	echo "run \`$progname --help \| more' for full usage"
	exit $EXIT_SUCCESS
	}

	# func_help
	# Echo long help message to standard output and exit.
	func_help ()
	{
	$SED '/^# Usage:/,/# Report bugs to/ {
	s/^# //; s/^# *$//;
	s/\$progname/'$progname'/;
	p;
	}; d' < "$progpath"
	exit $EXIT_SUCCESS
	}

	# func_version
	# Echo version message to standard output and exit.
	func_version ()
	{
	$SED '/^# '$PROGRAM' (GNU /,/# Written by / {
	s/^# //;
	s/\((C)\)[ 0-9,-]\( [1-9][0-9]\)/\1\2/;
	p;
	}; d' < "$progpath"
	exit $EXIT_SUCCESS
	}

	# func_update
	# Copy $1 to $2 if it is newer.
	func_update ()
	{
	if test -f "$2" && cmp -s "$1" "$2" ; then
	func_verbose "$2 is up-to-date"
	else
	func_echo "copying $1 -> $2"
	cp "$1" "$2"
	fi
	}

	# Parse options once, thoroughly. This comes as soon as possible in
	# the script to make things like `bootstrap --version' happen quickly.
	{
	# sed scripts:
	my_sed_single_opt='1s/^\(..\).*$/\1/;q'
	my_sed_single_rest='1s/^..\(.*\)$/\1/;q'
	my_sed_long_opt='1s/^\(--[^=]\)=./\1/;q'
	my_sed_long_arg='1s/^--[^=]*=//'

	# this just eases exit handling
	while test $# -gt 0; do
	opt="$1"
	shift
	case $opt in
	-p\|--download-po)
	test $# = 0 && func_missing_arg $opt && break
	case $1 in
	0\|[Nn]\|[Ff]) DOWNLOAD_PO=no ;;
	[Oo]*) DOWNLOAD_PO=only ;;
	esac
	;;

	# Separate optargs to long options:
	--download-po=*)
	arg=`echo "$opt" \| $SED "$my_sed_long_arg"`
	opt=`echo "$opt" \| $SED "$my_sed_long_opt"`
	set -- "$opt" "$arg" ${1+"$@"}
	;;

	# Separate optargs to short options:
	-p*)
	arg=`echo "$opt" \|$SED "$my_sed_single_rest"`
	opt=`echo "$opt" \|$SED "$my_sed_single_opt"`
	set -- "$opt" "$arg" ${1+"$@"}
	;;

	-f\|--force) vcs_only_file= ;;
	-\?\|-h) func_usage ;;
	--help) func_help ;;
	--version) func_version ;;
	--) break ;;
	-*) func_fatal_help "unrecognized option \`$opt'" ;;
	*) set -- "$opt" ${1+"$@"}; break ;;
	esac
	done

	# Bail if the options were screwed
	$exit_cmd $EXIT_FAILURE

	if test -n "$vcs_only_file" && test ! -r "$vcs_only_file"; then
	func_fatal_error \
	"Bootstrapping from a non-version-control distribution is risky."
	fi
	}

	## ------------------------------ ##
	## Fetch translations. ##
	## (taken from GNU tar bootstrap) ##
	## ------------------------------ ##

	func_get_translations()
	{
	subdir=$1
	domain=$2
	po_file=$3

	url=http://translationproject.org/domain/$2.html
	baseurl=`expr "$url" : '\(.\)/.'`

	func_echo "getting translations into $subdir for $domain..."

	case $po_file in
	'') (cd $subdir && rm -f dummy `ls \| sed -n '/\.gmo$/p; /\.po/p'`);;
	esac &&

	$WGET -nv --cache=off -O "$subdir/$domain.html" "$url" &&

	sed -n 's\|.href="\(.\)/\([^/][^/]\)/'"$domain"'-\([^/"]\)\.[^."]\.po".\|\2:\3:\1\|p' <"$subdir/$domain.html" \|
	sort -t: -k 1,1 -k 2,2n -k2,2 -k3,3n -k3,3 -k4,4n -k4,4 -k5,5n -k5.5 \|
	$AWK -F: '
	{ if (lang && $1 != lang) print lang, ver, subdir }
	{ lang = $1; ver = $2; subdir = $3 }
	END { if (lang) print lang, ver, subdir }
	' \| $AWK -v domain="$domain" -v po_file="$po_file" -v baseurl="$baseurl" -v subdir="$subdir" '
	{
	lang = $1
	if (po_file == (lang ".po")) next

	ver = $2
	urlfmt = ""
	printf "$WGET -nv --cache=off -O %s/%s.po %s/%s/%s/%s-%s.%s.po &&\n", subdir, lang, baseurl, $3, lang, domain, ver, lang
	}
	END { print ":" }
	' \|
	sh &&
	ls "$subdir"/.po \| sed 's\|./\|\|; s\|\.po$\|\|' >"$subdir/LINGUAS" &&
	rm "$subdir/$domain.html"
	}

	## ------------------------------ ##
	## Update translations. ##
	## (taken from GNU tar bootstrap) ##
	## ------------------------------ ##

	func_update_po ()
	{
	if test $# = 1; then
	case $1 in
	*.po) POFILE=$1 ;;
	*) POFILE=$1.po ;;
	esac
	func_get_translations ./po $package "$POFILE" &&
	LANG=`expr $POFILE : '\(.*\)\.po'` &&
	{ grep -q $LANG po/LINGUAS \|\|
	(echo $LANG; cat po/LINGUAS) \| sort -o po/LINGUAS; }
	else
	func_get_translations ./po $package
	fi
	}

	case $DOWNLOAD_PO in
	no) ;;
	only) func_update_po; exit 0 ;;
	yes) func_update_po ;;
	*) func_update_po $DOWNLOAD_PO ;;
	esac

	## ---------------- ##
	## Version control. ##
	## ---------------- ##

	# gnulib-tool updates ltdl/m4/.{git,cvs}ignore and gnu/.{git,cvs}ignore, and
	# keeping generated files under version control does not make sense. Since
	# gnu is entirely ignored, we only need to prepopulate the ltdl/m4 ignore
	# files with generated files not tracked by gnulib-tool.
	if test -f $config_macro_dir/.gitignore ; then
	:
	else
	func_echo "creating initial $config_macro_dir/.cvsignore"
	cat > $config_macro_dir/.cvsignore <<\EOF
	# files created by gnulib, but that gnulib doesn't track
	*~
	.cvsignore
	.gitignore
	gnulib-comp.m4
	# files manually imported, rather than using gnulib-tool
	getopt.m4
	xstrtol.m4
	# files created by autopoint
	codeset.m4
	gettext.m4
	glibc2.m4
	glibc21.m4
	iconv.m4
	intdiv0.m4
	intl.m4
	intldir.m4
	intmax.m4
	inttypes-pri.m4
	inttypes_h.m4
	lcmessage.m4
	lib-ld.m4
	lib-link.m4
	lib-prefix.m4
	lock.m4
	longdouble.m4
	longlong.m4
	nls.m4
	po.m4
	printf-posix.m4
	progtest.m4
	size_max.m4
	stdint_h.m4
	uintmax_t.m4
	ulonglong.m4
	visibility.m4
	wchar_t.m4
	wint_t.m4
	xsize.m4
	# files created by libtoolize
	argz.m4
	libtool.m4
	ltdl.m4
	ltoptions.m4
	ltsugar.m4
	ltversion.m4
	lt~obsolete.m4
	# gnulib-tool edits below here
	EOF
	func_echo "creating initial $config_macro_dir/.gitignore"
	cp $config_macro_dir/.cvsignore $config_macro_dir/.gitignore
	fi

	# 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
	:
	elif (git-merge-changelog --version) >/dev/null 2>/dev/null ; then
	func_echo "initializing git-merge-changelog driver"
	git config merge.merge-changelog.name 'GNU-style ChangeLog merge driver'
	git config merge.merge-changelog.driver 'git-merge-changelog %O %A %B'
	else
	func_echo "consider installing git-merge-changelog from gnulib"
	fi
	fi

	## ---------- ##
	## Autopoint. ##
	## ---------- ##

	# Released autopoint has the tendency to install macros that have been
	# obsoleted in current gnulib, so run this before gnulib-tool.
	func_echo "running: $AUTOPOINT --force"
	$AUTOPOINT --force

	## ----------- ##
	## Libtoolize. ##
	## ----------- ##

	# Autoreconf runs aclocal before libtoolize, which causes spurious
	# warnings if the initial aclocal is confused by the libtoolized
	# (or worse out-of-date) macro directory.
	func_echo "running: $LIBTOOLIZE --force --copy --install"
	${LIBTOOLIZE} --force --copy --install

	## ---------------------------- ##
	## Find the gnulib module tree. ##
	## ---------------------------- ##

	case $GNULIB_TOOL in
	/* ) gnulibdir=$GNULIB_TOOL ;; # absolute
	/ ) gnulibdir=`pwd`/$GNULIB_TOOL ;; # relative
	* ) gnulibdir=`which "$GNULIB_TOOL"` ;; # PATH search
	esac

	# Follow symlinks
	while test -h "$gnulibdir"; do

	# Resolve symbolic link.
	sedexpr1='s, -> ,#%%#,'
	sedexpr2='s,^.#%%#\(.\)$,\1,p'
	linkval=`ls -l "$gnulibdir" \| $SED "$sedexpr1" \| $SED -n "$sedexpr2"`
	test -n "$linkval" \|\| break

	case "$linkval" in
	/* ) gnulibdir="$linkval" ;;
	* ) gnulibdir=`echo "$gnulibdir" \| sed -e 's,/[^/]*$,,'`/"$linkval" ;;
	esac

	done

	gnulibdir=`echo "$gnulibdir" \| $SED "$dirname"`


	## ---------------------- ##
	## Import Gnulib modules. ##
	## ---------------------- ##

	func_echo "running: ${GNULIB_TOOL} --update"
	${GNULIB_TOOL} --update


	## --------------------------------- ##
	## Copy additional src only modules. ##
	## --------------------------------- ##

	func_echo "fetching modules for src directory"

	for file in `${GNULIB_TOOL} --extract-filelist $src_modules`; do

	dest=`echo $file \| $SED "$basename"`
	case $file in
	lib/*) dest=src/$dest ;;
	m4/*) dest=$config_macro_dir/$dest ;;
	*) func_echo "Unknown file: $file"
	exit 1
	;;
	esac

	# Be sure to show all copying errors before bailing out
	if test -f $gnulibdir/$file; then
	func_echo "copying file \`$dest'"
	cp $gnulibdir/$file $dest
	else
	func_error "$gnulibdir/$file does not exist"
	bailout_cb="exit 1"
	fi
	done
	$bailout_cb


	## ----------- ##
	## Autoreconf. ##
	## ----------- ##

	# Disable autopoint and libtoolize, since they were already done above.
	func_echo "running: AUTOPOINT=true LIBTOOLIZE=true " \
	"$AUTORECONF --force --verbose --install --no-recursive"
	AUTOPOINT=true LIBTOOLIZE=true \
	$AUTORECONF --force --verbose --install --no-recursive


	## ---------------------------------------- ##
	## Gnulib is more up-to-date than automake. ##
	## ---------------------------------------- ##

	func_update "$gnulibdir"/build-aux/config.guess $config_aux_dir/config.guess
	func_update "$gnulibdir"/build-aux/config.sub $config_aux_dir/config.sub
	func_update "$gnulibdir"/build-aux/depcomp $config_aux_dir/depcomp
	func_update "$gnulibdir"/build-aux/install-sh $config_aux_dir/install-sh
	func_update "$gnulibdir"/build-aux/mdate-sh $config_aux_dir/mdate-sh
	func_update "$gnulibdir"/build-aux/missing $config_aux_dir/missing
	func_update "$gnulibdir"/build-aux/texinfo.tex $config_aux_dir/texinfo.tex
	func_update "$gnulibdir"/build-aux/po/Makefile.in.in po/Makefile.in.in
	func_update "$gnulibdir"/build-aux/po/remove-potcdate.sin po/remove-potcdate.sin
	func_update "$gnulibdir"/doc/COPYINGv3 COPYING
	func_update "$gnulibdir"/doc/INSTALL INSTALL


	## ------- ##
	## Wrapup. ##
	## ------- ##

	if test x"$DOWNLOAD_PO" != xno; then
	func_echo "If your pofiles are up-to-date, you can rerun bootstrap"
	func_echo "as \`DOWNLOAD_PO=no $progname' to avoid redownloading."
	fi

	exit 0

	# Local variables:
	# eval: (add-hook 'write-file-hooks 'time-stamp)
	# time-stamp-start: "# bootstrap (GNU M4) version "
	# time-stamp-format: "%:y-%02m-%02d"
	# time-stamp-end: "$"
	# End: