maint: update gnulib.

[bison.git] / bootstrap

diff --git a/bootstrap b/bootstrap
index e1075502d8af654541c0be033856a37497874df0..edac17e0729bbc4f86f08c703e2991d822a9768e 100755 (executable)
--- a/bootstrap
+++ b/bootstrap
@@ -1,8 +1,10 @@
 #! /bin/sh
 #! /bin/sh

+# Print a version string.
+scriptversion=2012-01-23.10; # UTC

 
 # Bootstrap this package from checked-out sources.
 
 
 # Bootstrap this package from checked-out sources.
 

-# Copyright (C) 2003-2010 Free Software Foundation, Inc.
+# Copyright (C) 2003-2012 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
 
 # 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


@@ -17,40 +19,51 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 

-# Written by Paul Eggert.
+# Originally written by Paul Eggert.  The canonical version of this
+# script is maintained as build-aux/bootstrap in gnulib, however, to
+# be useful to your project, you should place a copy of it under
+# version control in the top-level directory of your project.  The
+# intent is that all customization can be done with a bootstrap.conf
+# file also maintained in your version control; gnulib comes with a
+# template build-aux/bootstrap.conf to get you started.
+
+# Please report bugs or propose patches to bug-gnulib@gnu.org.

 
 nl='
 '
 
 # Ensure file names are sorted consistently across platforms.
 
 nl='
 '
 
 # 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
 
 local_gl_dir=gl
 
 LC_ALL=C
 export LC_ALL
 
 local_gl_dir=gl
 

-# Temporary directory names.
-bt='._bootmp'
-bt_regex=`echo "$bt"| sed 's/\./[.]/g'`
-bt2=${bt}2
+me=$0

 
 usage() {
   cat <<EOF
 
 usage() {
   cat <<EOF

-Usage: $0 [OPTION]...
+Usage: $me [OPTION]...

 Bootstrap this package from the checked-out sources.
 
 Options:
 Bootstrap this package from the checked-out sources.
 
 Options:

- --gnulib-srcdir=DIRNAME  Specify the local directory where gnulib
+ --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
                           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.
- --skip-po                Do not download po files.
-
-If the file $0.conf exists in the same directory as this script, its
+                          them again.  Defaults to \$GNULIB_SRCDIR
+ --bootstrap-sync         if this bootstrap script is not identical to
+                          the version in the local gnulib sources,
+                          update this script, and then restart it with
+                          /bin/sh or the shell \$CONFIG_SHELL
+ --no-bootstrap-sync      do not check whether bootstrap is out of sync
+ --copy                   copy files instead of creating symbolic links
+ --force                  attempt to bootstrap even if the sources seem
+                          not to have been checked out
+ --no-git                 do not use git to update gnulib.  Requires that
+                          --gnulib-srcdir point to a correct gnulib snapshot
+ --skip-po                do not download po files
+
+If the file $me.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
 contents are read as shell variables to configure the bootstrap.
 
 For build prerequisites, environment variables like \$AUTOCONF and \$AMTAR


@@ -71,6 +84,13 @@ gnulib_modules=
 # Any gnulib files needed that are not in modules.
 gnulib_files=
 
 # Any gnulib files needed that are not in modules.
 gnulib_files=
 

+: ${AUTOPOINT=autopoint}
+: ${AUTORECONF=autoreconf}
+
+# A function to be called right after gnulib-tool is run.
+# Override it via your own definition in bootstrap.conf.
+bootstrap_post_import_hook() { :; }
+

 # A function to be called after everything else in this script.
 # Override it via your own definition in bootstrap.conf.
 bootstrap_epilogue() { :; }
 # A function to be called after everything else in this script.
 # Override it via your own definition in bootstrap.conf.
 bootstrap_epilogue() { :; }


@@ -81,7 +101,13 @@ bootstrap_epilogue() { :; }
 # options because the latest/%s directory and the .po files within are
 # all symlinks.
 po_download_command_format=\
 # options because the latest/%s directory and the .po files within are
 # all symlinks.
 po_download_command_format=\

-"rsync -Lrtvz 'translationproject.org::tp/latest/%s/' '%s'"
+"rsync --delete --exclude '*.s1' -Lrtvz \
+ 'translationproject.org::tp/latest/%s/' '%s'"
+
+# Fallback for downloading .po files (if rsync fails).
+po_download_command_format2=\
+"wget --mirror -nd -q -np -A.po -P '%s' \
+ http://translationproject.org/latest/%s/"

 
 extract_package_name='
   /^AC_INIT(/{
 
 extract_package_name='
   /^AC_INIT(/{


@@ -108,21 +134,10 @@ source_base=lib
 m4_base=m4
 doc_base=doc
 tests_base=tests
 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
-"
+gnulib_extra_files=''

 
 # Additional gnulib-tool options to use.  Use "\newline" to break lines.
 
 # Additional gnulib-tool options to use.  Use "\newline" to break lines.

-gnulib_tool_option_extras=
+gnulib_tool_option_extras='--makefile-name=gnulib.mk'

 
 # Other locale categories that need message catalogs.
 EXTRA_LOCALE_CATEGORIES=
 
 # Other locale categories that need message catalogs.
 EXTRA_LOCALE_CATEGORIES=


@@ -134,7 +149,8 @@ XGETTEXT_OPTIONS='\\\
  --flag=error:3:c-format --flag=error_at_line:5:c-format\\\
 '
 
  --flag=error:3:c-format --flag=error_at_line:5:c-format\\\
 '
 

-# Package bug report address for gettext files
+# Package bug report address and copyright holder for gettext files
+COPYRIGHT_HOLDER='Free Software Foundation, Inc.'

 MSGID_BUGS_ADDRESS=bug-$package@gnu.org
 
 # Files we don't want to import.
 MSGID_BUGS_ADDRESS=bug-$package@gnu.org
 
 # Files we don't want to import.


@@ -142,7 +158,7 @@ excluded_files=
 
 # File that should exist in the top directory of a checked out hierarchy,
 # but not in a distribution tarball.
 
 # File that should exist in the top directory of a checked out hierarchy,
 # but not in a distribution tarball.

-checkout_only_file=HACKING
+checkout_only_file=README-hacking

 
 # Whether to use copies instead of symlinks.
 copy=false
 
 # Whether to use copies instead of symlinks.
 copy=false


@@ -153,6 +169,13 @@ copy=false
 # on which version control system (if any) is used in the source directory.
 vc_ignore=auto
 
 # on which version control system (if any) is used in the source directory.
 vc_ignore=auto
 

+# Set this to true in bootstrap.conf to enable --bootstrap-sync by
+# default.
+bootstrap_sync=false
+
+# Use git to update gnulib sources
+use_git=true
+

 # find_tool ENVVAR NAMES...
 # -------------------------
 # Search for a required program.  Use the value of ENVVAR, if set,
 # find_tool ENVVAR NAMES...
 # -------------------------
 # Search for a required program.  Use the value of ENVVAR, if set,


@@ -161,7 +184,6 @@ vc_ignore=auto
 # die otherwise.
 find_tool ()
 {
 # die otherwise.
 find_tool ()
 {

-  # Find sha1sum, named gsha1sum on MacPorts.

   find_tool_envvar=$1
   shift
   find_tool_names=$@
   find_tool_envvar=$1
   shift
   find_tool_names=$@


@@ -178,19 +200,19 @@ find_tool ()
     find_tool_error_prefix="\$$find_tool_envvar: "
   fi
   if test x"$find_tool_res" = x; then
     find_tool_error_prefix="\$$find_tool_envvar: "
   fi
   if test x"$find_tool_res" = x; then

-    echo >&2 "$0: one of these is required: $find_tool_names"
+    echo >&2 "$me: one of these is required: $find_tool_names"

     exit 1
   fi
   ($find_tool_res --version </dev/null) >/dev/null 2>&1 || {
     exit 1
   fi
   ($find_tool_res --version </dev/null) >/dev/null 2>&1 || {

-    echo >&2 "$0: ${find_tool_error_prefix}cannot run $find_tool_res --version"
+    echo >&2 "$me: ${find_tool_error_prefix}cannot run $find_tool_res --version"

     exit 1
   }
   eval "$find_tool_envvar=\$find_tool_res"
   eval "export $find_tool_envvar"
 }
 
     exit 1
   }
   eval "$find_tool_envvar=\$find_tool_res"
   eval "export $find_tool_envvar"
 }
 

-# Find sha1sum, named gsha1sum on MacPorts.
-find_tool SHA1SUM sha1sum gsha1sum
+# Find sha1sum, named gsha1sum on MacPorts, and shasum on MacOS 10.6.
+find_tool SHA1SUM sha1sum gsha1sum shasum

 
 # Override the default configuration, if necessary.
 # Make sure that bootstrap.conf is sourced from the current directory
 
 # Override the default configuration, if necessary.
 # Make sure that bootstrap.conf is sourced from the current directory


@@ -200,6 +222,18 @@ case "$0" in
   *) test -r "$0.conf" && . ./"$0.conf" ;;
 esac
 
   *) test -r "$0.conf" && . ./"$0.conf" ;;
 esac
 

+# Extra files from gnulib, which override files from other sources.
+test -z "${gnulib_extra_files}" && \
+  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
+"

 
 if test "$vc_ignore" = auto; then
   vc_ignore=
 
 if test "$vc_ignore" = auto; then
   vc_ignore=


@@ -225,25 +259,53 @@ do
     checkout_only_file=;;
   --copy)
     copy=true;;
     checkout_only_file=;;
   --copy)
     copy=true;;

+  --bootstrap-sync)
+    bootstrap_sync=true;;
+  --no-bootstrap-sync)
+    bootstrap_sync=false;;
+  --no-git)
+    use_git=false;;

   *)
     echo >&2 "$0: $option: unknown option"
     exit 1;;
   esac
 done
 
   *)
     echo >&2 "$0: $option: unknown option"
     exit 1;;
   esac
 done
 

+if $use_git || test -d "$GNULIB_SRCDIR"; then
+  :
+else
+  echo "$0: Error: --no-git requires --gnulib-srcdir" >&2
+  exit 1
+fi
+

 if test -n "$checkout_only_file" && test ! -r "$checkout_only_file"; then
   echo "$0: Bootstrapping from a non-checked-out distribution is risky." >&2
   exit 1
 fi
 
 if test -n "$checkout_only_file" && test ! -r "$checkout_only_file"; then
   echo "$0: Bootstrapping from a non-checked-out distribution is risky." >&2
   exit 1
 fi
 

+# Ensure that lines starting with ! sort last, per gitignore conventions
+# for whitelisting exceptions after a more generic blacklist pattern.
+sort_patterns() {
+  sort -u "$@" | sed '/^!/ {
+    H
+    d
+  }
+  $ {
+    P
+    x
+    s/^\n//
+  }' | sed '/^$/d'
+}
+

 # 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
 # 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 - $file > /dev/null \
-    || echo "$str" | sort -u - $file -o $file \
+  echo "$str" | sort_patterns - $file | cmp - $file > /dev/null \
+    || { echo "$str" | sort_patterns - $file > $file.bak \
+      && mv $file.bak $file; } \

     || exit 1
 }
 
     || exit 1
 }
 


@@ -251,13 +313,13 @@ insert_sorted_if_absent() {
 # insert_sorted_if_absent.
 insert_vc_ignore() {
   vc_ignore_file="$1"
 # insert_sorted_if_absent.
 insert_vc_ignore() {
   vc_ignore_file="$1"

+  pattern="$2"

   case $vc_ignore_file in
   *.gitignore)
   case $vc_ignore_file in
   *.gitignore)

-    # A .gitignore entry that does not start with `/' applies recursively to
-    # subdirectories, so prepend `/' to every .gitignore entry.
-    pattern=`echo "$2" | sed s,^,/,`;;
-  *)
-    pattern="$2";;
+    # A .gitignore entry that does not start with '/' applies
+    # recursively to subdirectories, so prepend '/' to every
+    # .gitignore entry.
+    pattern=`echo "$pattern" | sed s,^,/,`;;

   esac
   insert_sorted_if_absent "$vc_ignore_file" "$pattern"
 }
   esac
   insert_sorted_if_absent "$vc_ignore_file" "$pattern"
 }


@@ -330,17 +392,18 @@ get_version() {
   $app --version >/dev/null 2>&1 || return 1
 
   $app --version 2>&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
+  sed -n '# Move version to start of line.
+          s/.*[v ]\([0-9]\)/\1/

 
 

-          # extract version at start of line
-          s/^\([0-9]\{1,\}\.[.a-z0-9-]*\).*/\1/
-          t done
+          # Skip lines that do not start with version.
+          /^[0-9]/!d

 
 

-          d
+          # Remove characters after the version.
+          s/[^.a-z0-9-].*//
+
+          # The first component must be digits only.
+          s/^\([0-9]*\)[a-z-].*/\1/

 
 

-          :done

           #the following essentially does s/5.005/5.5/
           s/\.0*\([1-9]\)/.\1/g
           p
           #the following essentially does s/5.005/5.5/
           s/\.0*\([1-9]\)/.\1/g
           p


@@ -351,21 +414,43 @@ check_versions() {
   ret=0
 
   while read app req_ver; do
   ret=0
 
   while read app req_ver; do

+    # We only need libtoolize from the libtool package.
+    if test "$app" = libtool; then
+      app=libtoolize
+    fi
+    # Exempt git if --no-git is in effect.
+    if test "$app" = git; then
+      $use_git || continue
+    fi

     # Honor $APP variables ($TAR, $AUTOCONF, etc.)
     # Honor $APP variables ($TAR, $AUTOCONF, etc.)

-    appvar=`echo $app | tr '[a-z]' '[A-Z]'`
+    appvar=`echo $app | tr '[a-z]-' '[A-Z]_'`

     test "$appvar" = TAR && appvar=AMTAR
     test "$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
+    case $appvar in
+        GZIP) ;; # Do not use $GZIP:  it contains gzip options.
+        *) eval "app=\${$appvar-$app}" ;;
+    esac
+    if [ "$req_ver" = "-" ]; then
+      # Merely require app to exist; not all prereq apps are well-behaved
+      # so we have to rely on $? rather than get_version.
+      $app --version >/dev/null 2>&1
+      if [ 126 -le $? ]; then
+        echo "$me: Error: '$app' not found" >&2

         ret=1
       fi
         ret=1
       fi

+    else
+      # Require app to produce a new enough version string.
+      inst_ver=$(get_version $app)
+      if [ ! "$inst_ver" ]; then
+        echo "$me: Error: '$app' not found" >&2
+        ret=1
+      else
+        latest_ver=$(sort_ver $req_ver $inst_ver | cut -d' ' -f2)
+        if [ ! "$latest_ver" = "$inst_ver" ]; then
+          echo "$me: Error: '$app' version == $inst_ver is too old" >&2
+          echo "       '$app' version >= $req_ver is required" >&2
+          ret=1
+        fi
+      fi

     fi
   done
 
     fi
   done
 


@@ -375,16 +460,56 @@ check_versions() {
 print_versions() {
   echo "Program    Min_version"
   echo "----------------------"
 print_versions() {
   echo "Program    Min_version"
   echo "----------------------"

-  printf "$buildreq"
+  printf %s "$buildreq"

   echo "----------------------"
   # can't depend on column -t
 }
 
   echo "----------------------"
   # can't depend on column -t
 }
 

+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
+if test $use_libtool = 1; then
+  find_tool LIBTOOLIZE glibtoolize libtoolize
+fi
+
+# gnulib-tool requires at least automake and autoconf.
+# If either is not listed, add it (with minimum version) as a prerequisite.
+case $buildreq in
+  *automake*) ;;
+  *) buildreq="automake 1.9
+$buildreq" ;;
+esac
+case $buildreq in
+  *autoconf*) ;;
+  *) buildreq="autoconf 2.59
+$buildreq" ;;
+esac
+
+# When we can deduce that gnulib-tool will require patch,
+# and when patch is not already listed as a prerequisite, add it, too.
+if test ! -d "$local_gl_dir" \
+    || find "$local_gl_dir" -name '*.diff' -exec false {} +; then
+  :
+else
+  case $buildreq in
+    *patch*) ;;
+    *) buildreq="patch -
+$buildreq" ;;
+  esac
+fi
+

 if ! printf "$buildreq" | check_versions; then
 if ! printf "$buildreq" | check_versions; then

-  test -f README-prereq &&
-  echo "See README-prereq for notes on obtaining these prerequisite programs:" >&2
-  echo
-  print_versions
+  echo >&2
+  if test -f README-prereq; then
+    echo "$0: See README-prereq for how to get the prerequisite programs" >&2
+  else
+    echo "$0: Please install the prerequisite programs" >&2
+  fi

   exit 1
 fi
 
   exit 1
 fi
 


@@ -395,18 +520,18 @@ 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
   if git config merge.merge-changelog.driver >/dev/null ; then
     :
   elif (git-merge-changelog --version) >/dev/null 2>/dev/null ; then

-    echo "initializing git-merge-changelog driver"
+    echo "$0: 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
     git config merge.merge-changelog.name 'GNU-style ChangeLog merge driver'
     git config merge.merge-changelog.driver 'git-merge-changelog %O %A %B'
   else

-    echo "consider installing git-merge-changelog from gnulib"
+    echo "$0: consider installing git-merge-changelog from gnulib"

   fi
 fi
 
 
 cleanup_gnulib() {
   status=$?
   fi
 fi
 
 
 cleanup_gnulib() {
   status=$?

-  rm -fr gnulib
+  rm -fr "$gnulib_path"

   exit $status
 }
 
   exit $status
 }
 


@@ -414,6 +539,9 @@ git_modules_config () {
   test -f .gitmodules && git config --file .gitmodules "$@"
 }
 
   test -f .gitmodules && git config --file .gitmodules "$@"
 }
 

+gnulib_path=`git_modules_config submodule.gnulib.path`
+test -z "$gnulib_path" && gnulib_path=gnulib
+

 # Get gnulib files.
 
 case ${GNULIB_SRCDIR--} in
 # Get gnulib files.
 
 case ${GNULIB_SRCDIR--} in


@@ -423,34 +551,58 @@ case ${GNULIB_SRCDIR--} in
     git submodule init || exit $?
     git submodule update || exit $?
 
     git submodule init || exit $?
     git submodule update || exit $?
 

-  elif [ ! -d gnulib ]; then
+  elif [ ! -d "$gnulib_path" ]; then

     echo "$0: getting gnulib files..."
 
     trap cleanup_gnulib 1 2 13 15
 
     echo "$0: getting gnulib files..."
 
     trap cleanup_gnulib 1 2 13 15
 

-    git clone --help|grep depth > /dev/null && shallow='--depth 2' || shallow=
-    git clone $shallow git://git.sv.gnu.org/gnulib ||
+    shallow=
+    git clone -h 2>&1 | grep -- --depth > /dev/null && shallow='--depth 2'
+    git clone $shallow git://git.sv.gnu.org/gnulib "$gnulib_path" ||

       cleanup_gnulib
 
     trap - 1 2 13 15
   fi
       cleanup_gnulib
 
     trap - 1 2 13 15
   fi

-  GNULIB_SRCDIR=gnulib
+  GNULIB_SRCDIR=$gnulib_path

   ;;
 *)
   ;;
 *)

-  # Redirect the gnulib submodule to the directory on the command line
-  # if possible.
+  # Use GNULIB_SRCDIR as a reference.

   if test -d "$GNULIB_SRCDIR"/.git && \
         git_modules_config submodule.gnulib.url >/dev/null; then
   if test -d "$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..."
     echo "$0: getting gnulib files..."

-    git submodule update || exit $?
-    GNULIB_SRCDIR=gnulib
+    if git submodule -h|grep -- --reference > /dev/null; then
+      # Prefer the one-liner available in git 1.6.4 or newer.
+      git submodule update --init --reference "$GNULIB_SRCDIR" \
+        "$gnulib_path" || exit $?
+    else
+      # This fallback allows at least git 1.5.5.
+      if test -f "$gnulib_path"/gnulib-tool; then
+        # Since file already exists, assume submodule init already complete.
+        git submodule update || exit $?
+      else
+        # Older git can't clone into an empty directory.
+        rmdir "$gnulib_path" 2>/dev/null
+        git clone --reference "$GNULIB_SRCDIR" \
+          "$(git_modules_config submodule.gnulib.url)" "$gnulib_path" \
+          && git submodule init && git submodule update \
+          || exit $?
+      fi
+    fi
+    GNULIB_SRCDIR=$gnulib_path

   fi
   ;;
 esac
 
   fi
   ;;
 esac
 

+if $bootstrap_sync; then
+  cmp -s "$0" "$GNULIB_SRCDIR/build-aux/bootstrap" || {
+    echo "$0: updating bootstrap and restarting..."
+    exec sh -c \
+      'cp "$1" "$2" && shift && exec "${CONFIG_SHELL-/bin/sh}" "$@"' \
+      -- "$GNULIB_SRCDIR/build-aux/bootstrap" \
+      "$0" "$@" --no-bootstrap-sync
+  }
+fi
+

 gnulib_tool=$GNULIB_SRCDIR/gnulib-tool
 <$gnulib_tool || exit
 
 gnulib_tool=$GNULIB_SRCDIR/gnulib-tool
 <$gnulib_tool || exit
 


@@ -459,27 +611,32 @@ gnulib_tool=$GNULIB_SRCDIR/gnulib-tool
 download_po_files() {
   subdir=$1
   domain=$2
 download_po_files() {
   subdir=$1
   domain=$2

-  echo "$0: getting translations into $subdir for $domain..."
+  echo "$me: getting translations into $subdir for $domain..."

   cmd=`printf "$po_download_command_format" "$domain" "$subdir"`
   cmd=`printf "$po_download_command_format" "$domain" "$subdir"`

+  eval "$cmd" && return
+  # Fallback to HTTP.
+  cmd=`printf "$po_download_command_format2" "$subdir" "$domain"`

   eval "$cmd"
 }
 
   eval "$cmd"
 }
 

-# Download .po files to $po_dir/.reference and copy only the new
+# Mirror .po files to $po_dir/.reference and copy only the new

 # or modified ones into $po_dir.  Also update $po_dir/LINGUAS.
 # or modified ones into $po_dir.  Also update $po_dir/LINGUAS.

+# Note po files that exist locally only are left in $po_dir but will
+# not be included in LINGUAS and hence will not be distributed.

 update_po_files() {
   # Directory containing primary .po files.
   # Overwrite them only when we're sure a .po file is new.
   po_dir=$1
   domain=$2
 
 update_po_files() {
   # Directory containing primary .po files.
   # Overwrite them only when we're sure a .po file is new.
   po_dir=$1
   domain=$2
 

-  # Download *.po files into this dir.
+  # Mirror *.po files into this dir.

   # Usually contains *.s1 checksum files.
   ref_po_dir="$po_dir/.reference"
 
   test -d $ref_po_dir || mkdir $ref_po_dir || return
   download_po_files $ref_po_dir $domain \
     && ls "$ref_po_dir"/*.po 2>/dev/null |
   # Usually contains *.s1 checksum files.
   ref_po_dir="$po_dir/.reference"
 
   test -d $ref_po_dir || mkdir $ref_po_dir || return
   download_po_files $ref_po_dir $domain \
     && ls "$ref_po_dir"/*.po 2>/dev/null |

-      sed 's|.*/||; s|\.po$||' > "$po_dir/LINGUAS"
+      sed 's|.*/||; s|\.po$||' > "$po_dir/LINGUAS" || return

 
   langs=`cd $ref_po_dir && echo *.po|sed 's/\.po//g'`
   test "$langs" = '*' && langs=x
 
   langs=`cd $ref_po_dir && echo *.po|sed 's/\.po//g'`
   test "$langs" = '*' && langs=x


@@ -491,7 +648,7 @@ update_po_files() {
         ! test -f "$po_dir/$po.po" ||
         ! $SHA1SUM -c --status "$cksum_file" \
             < "$new_po" > /dev/null; then
         ! test -f "$po_dir/$po.po" ||
         ! $SHA1SUM -c --status "$cksum_file" \
             < "$new_po" > /dev/null; then

-      echo "updated $po_dir/$po.po..."
+      echo "$me: updated $po_dir/$po.po..."

       cp "$new_po" "$po_dir/$po.po" \
           && $SHA1SUM < "$new_po" > "$cksum_file"
     fi
       cp "$new_po" "$po_dir/$po.po" \
           && $SHA1SUM < "$new_po" > "$cksum_file"
     fi


@@ -509,27 +666,6 @@ case $SKIP_PO in
   fi;;
 esac
 
   fi;;
 esac
 

-check_dst_dir()
-{
-  dst=$1
-  # If the destination directory doesn't exist, create it.
-  # This is required at least for "lib/uniwidth/cjk.h".
-  dst_dir=`dirname "$dst"`
-  if ! test -d "$dst_dir"; then
-    mkdir -p "$dst_dir"
-
-    # If we've just created a directory like lib/uniwidth,
-    # tell version control system(s) it's ignorable.
-    # FIXME: for now, this does only one level
-    parent=`dirname "$dst_dir"`
-    for dot_ig in x $vc_ignore; do
-      test $dot_ig = x && continue
-      ig=$parent/$dot_ig
-      insert_vc_ignore $ig `echo "$dst_dir"|sed 's,.*/,,'`
-    done
-  fi
-}
-

 symlink_to_dir()
 {
   src=$1/$2
 symlink_to_dir()
 {
   src=$1/$2


@@ -537,32 +673,55 @@ symlink_to_dir()
 
   test -f "$src" && {
 
 
   test -f "$src" && {
 

-    check_dst_dir "$dst"
+    # If the destination directory doesn't exist, create it.
+    # This is required at least for "lib/uniwidth/cjk.h".
+    dst_dir=`dirname "$dst"`
+    if ! test -d "$dst_dir"; then
+      mkdir -p "$dst_dir"
+
+      # If we've just created a directory like lib/uniwidth,
+      # tell version control system(s) it's ignorable.
+      # FIXME: for now, this does only one level
+      parent=`dirname "$dst_dir"`
+      for dot_ig in x $vc_ignore; do
+        test $dot_ig = x && continue
+        ig=$parent/$dot_ig
+        insert_vc_ignore $ig `echo "$dst_dir"|sed 's,.*/,,'`
+      done
+    fi

 
     if $copy; then
       {
         test ! -h "$dst" || {
 
     if $copy; then
       {
         test ! -h "$dst" || {

-          echo "$0: rm -f $dst" &&
+          echo "$me: rm -f $dst" &&

           rm -f "$dst"
         }
       } &&
       test -f "$dst" &&
       cmp -s "$src" "$dst" || {
           rm -f "$dst"
         }
       } &&
       test -f "$dst" &&
       cmp -s "$src" "$dst" || {

-        echo "$0: cp -fp $src $dst" &&
+        echo "$me: cp -fp $src $dst" &&

         cp -fp "$src" "$dst"
       }
     else
         cp -fp "$src" "$dst"
       }
     else

+      # Leave any existing symlink alone, if it already points to the source,
+      # so that broken build tools that care about symlink times
+      # aren't confused into doing unnecessary builds.  Conversely, if the
+      # existing symlink's time stamp is older than the source, make it afresh,
+      # so that broken tools aren't confused into skipping needed builds.  See
+      # <http://lists.gnu.org/archive/html/bug-gnulib/2011-05/msg00326.html>.

       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=$1 &&
       test -h "$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" || {
+      test "$src_i" = "$dst_i" &&
+      both_ls=`ls -dt "$src" "$dst"` &&
+      test "X$both_ls" = "X$dst$nl$src" || {

         dot_dots=
         case $src in
         /*) ;;
         *)
           case /$dst/ in
           *//* | */../* | */./* | /*/*/*/*/*/)
         dot_dots=
         case $src in
         /*) ;;
         *)
           case /$dst/ in
           *//* | */../* | */./* | /*/*/*/*/*/)

-             echo >&2 "$0: invalid symlink calculation: $src -> $dst"
+             echo >&2 "$me: invalid symlink calculation: $src -> $dst"

              exit 1;;
           /*/*/*/*/)   dot_dots=../../../;;
           /*/*/*/)     dot_dots=../../;;
              exit 1;;
           /*/*/*/*/)   dot_dots=../../../;;
           /*/*/*/)     dot_dots=../../;;


@@ -570,59 +729,39 @@ symlink_to_dir()
           esac;;
         esac
 
           esac;;
         esac
 

-        echo "$0: ln -fs $dot_dots$src $dst" &&
+        echo "$me: ln -fs $dot_dots$src $dst" &&

         ln -fs "$dot_dots$src" "$dst"
       }
     fi
   }
 }
 
         ln -fs "$dot_dots$src" "$dst"
       }
     fi
   }
 }
 

-cp_mark_as_generated()
-{
-  cp_src=$1
-  cp_dst=$2
+# NOTE: we have to be careful to run both autopoint and libtoolize
+# before gnulib-tool, since gnulib-tool is likely to provide newer
+# versions of files "installed" by these two programs.
+# Then, *after* gnulib-tool (see below), we have to be careful to
+# run autoreconf in such a way that it does not run either of these
+# two just-pre-run programs.

 
 

-  if cmp -s "$cp_src" "$GNULIB_SRCDIR/$cp_dst"; then
-    symlink_to_dir "$GNULIB_SRCDIR" "$cp_dst"
-  elif cmp -s "$cp_src" "$local_gl_dir/$cp_dst"; then
-    symlink_to_dir $local_gl_dir "$cp_dst"
-  else
-    case $cp_dst in
-      *.[ch])             c1='/* '; c2=' */';;
-      *.texi)             c1='@c '; c2=     ;;
-      *.m4|*/Make*|Make*) c1='# ' ; c2=     ;;
-      *)                  c1=     ; c2=     ;;
-    esac
+# Import from gettext.
+with_gettext=yes
+grep '^[        ]*AM_GNU_GETTEXT_VERSION(' configure.ac >/dev/null || \
+    with_gettext=no

 
 

-    if test -z "$c1"; then
-      cmp -s "$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"
-      # Copy the file first to get proper permissions if it
-      # 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"
-      ) > $cp_dst-t &&
-      if cmp -s "$cp_dst-t" "$cp_dst"; then
-        rm -f "$cp_dst-t"
-      else
-        echo "$0: cp $cp_src $cp_dst # with edits" &&
-        mv -f "$cp_dst-t" "$cp_dst"
-      fi
-    fi
-  fi
-}
+if test $with_gettext = yes; then
+  # Released autopoint has the tendency to install macros that have been
+  # obsoleted in current gnulib, so run this before gnulib-tool.
+  echo "$0: $AUTOPOINT --force"
+  $AUTOPOINT --force || exit
+fi
+
+# 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.
+if test $use_libtool = 1; then
+  echo "running: $LIBTOOLIZE --copy --install"
+  $LIBTOOLIZE --copy --install
+fi

 
 version_controlled_file() {
   dir=$1
 
 version_controlled_file() {
   dir=$1


@@ -636,115 +775,39 @@ version_controlled_file() {
   elif test -d .svn; then
     svn log -r HEAD "$dir/$file" > /dev/null 2>&1 && found=yes
   else
   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
+    echo "$me: no version control for $dir/$file?" >&2

   fi
   test $found = yes
 }
 
   fi
   test $found = yes
 }
 

-slurp() {
-  for dir in . `(cd $1 && find * -type d -print)`; do
-    copied=
-    sep=
-    for file in `ls -a $1/$dir`; do
-      case $file in
-      .|..) continue;;
-      .*) continue;; # FIXME: should all file names starting with "." be ignored?
-      esac
-      test -d $1/$dir/$file && continue
-      for excluded_file in $excluded_files; do
-        test "$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 - $dir/$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/$file"
-      else
-        copied=$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
-      fi || exit
-    done
-
-    for dot_ig in x $vc_ignore; do
-      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 .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.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
-}
-
-
-# Create boot temporary directories to import from gnulib and gettext.
-rm -fr $bt $bt2 &&
-mkdir $bt $bt2 || exit
-

 # Import from gnulib.
 
 gnulib_tool_options="\
  --import\
  --no-changelog\
 # Import from gnulib.
 
 gnulib_tool_options="\
  --import\
  --no-changelog\

- --aux-dir $bt/$build_aux\
- --doc-base $bt/$doc_base\
+ --aux-dir $build_aux\
+ --doc-base $doc_base\

  --lib $gnulib_name\
  --lib $gnulib_name\

- --m4-base $bt/$m4_base/\
- --source-base $bt/$source_base/\
- --tests-base $bt/$tests_base\
+ --m4-base $m4_base/\
+ --source-base $source_base/\
+ --tests-base $tests_base\

  --local-dir $local_gl_dir\
  $gnulib_tool_option_extras\
 "
  --local-dir $local_gl_dir\
  $gnulib_tool_option_extras\
 "

+if test $use_libtool = 1; then
+  case "$gnulib_tool_options " in
+    *' --libtool '*) ;;
+    *) gnulib_tool_options="$gnulib_tool_options --libtool" ;;
+  esac
+fi

 echo "$0: $gnulib_tool $gnulib_tool_options --import ..."
 $gnulib_tool $gnulib_tool_options --import $gnulib_modules &&
 echo "$0: $gnulib_tool $gnulib_tool_options --import ..."
 $gnulib_tool $gnulib_tool_options --import $gnulib_modules &&

-slurp $bt || exit

 
 for file in $gnulib_files; do
   symlink_to_dir "$GNULIB_SRCDIR" $file || exit
 done
 
 
 for file in $gnulib_files; do
   symlink_to_dir "$GNULIB_SRCDIR" $file || exit
 done
 

-
-# Import from gettext.
-with_gettext=yes
-grep '^[        ]*AM_GNU_GETTEXT_VERSION(' configure.ac >/dev/null || \
-    with_gettext=no
-
-if test $with_gettext = yes; then
-  echo "$0: (cd $bt2; ${AUTOPOINT-autopoint}) ..."
-  cp configure.ac $bt2 &&
-  (cd $bt2 && ${AUTOPOINT-autopoint} && rm configure.ac) &&
-  slurp $bt2 $bt || exit
-fi
-rm -fr $bt $bt2 || exit
+bootstrap_post_import_hook

 
 # Remove any dangling symlink matching "*.m4" or "*.[ch]" in some
 # gnulib-populated directories.  Such .m4 files would cause aclocal to fail.
 
 # Remove any dangling symlink matching "*.m4" or "*.[ch]" in some
 # gnulib-populated directories.  Such .m4 files would cause aclocal to fail.


@@ -758,36 +821,21 @@ find "$m4_base" "$source_base" \
   -depth \( -name '*.m4' -o -name '*.[ch]' \) \
   -type l -xtype l -delete > /dev/null 2>&1
 
   -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 \
-  "${ACLOCAL-aclocal} --force -I m4" \
-  "${AUTOCONF-autoconf} --force" \
-  "${AUTOHEADER-autoheader} --force" \
-  "${AUTOMAKE-automake} --add-missing --copy --force-missing"
-do
-  if test "$command" = libtool; then
-    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
-done
+# Some systems (RHEL 5) are using ancient autotools, for which the
+# --no-recursive option had not been invented.  Detect that lack and
+# omit the option when it's not supported.  FIXME in 2017: remove this
+# hack when RHEL 5 autotools are updated, or when they become irrelevant.
+no_recursive=
+case $($AUTORECONF --help) in
+  *--no-recursive*) no_recursive=--no-recursive;;
+esac

 
 

+# Tell autoreconf not to invoke autopoint or libtoolize; they were run above.
+echo "running: AUTOPOINT=true LIBTOOLIZE=true " \
+    "$AUTORECONF --verbose --install $no_recursive -I $m4_base $ACLOCAL_FLAGS"
+AUTOPOINT=true LIBTOOLIZE=true \
+    $AUTORECONF --verbose --install $no_recursive -I $m4_base $ACLOCAL_FLAGS \
+  || exit 1

 
 # Get some extra files from gnulib, overriding existing files.
 for file in $gnulib_extra_files; do
 
 # Get some extra files from gnulib, overriding existing files.
 for file in $gnulib_extra_files; do


@@ -805,13 +853,14 @@ if test $with_gettext = yes; then
   rm -f po/Makevars
   sed '
     /^EXTRA_LOCALE_CATEGORIES *=/s/=.*/= '"$EXTRA_LOCALE_CATEGORIES"'/
   rm -f po/Makevars
   sed '
     /^EXTRA_LOCALE_CATEGORIES *=/s/=.*/= '"$EXTRA_LOCALE_CATEGORIES"'/

-    /^MSGID_BUGS_ADDRESS *=/s/=.*/= '"$MSGID_BUGS_ADDRESS"'/
+    /^COPYRIGHT_HOLDER *=/s/=.*/= '"$COPYRIGHT_HOLDER"'/
+    /^MSGID_BUGS_ADDRESS *=/s|=.*|= '"$MSGID_BUGS_ADDRESS"'|

     /^XGETTEXT_OPTIONS *=/{
       s/$/ \\/
       a\
           '"$XGETTEXT_OPTIONS"' $${end_of_xgettext_options+}
     }
     /^XGETTEXT_OPTIONS *=/{
       s/$/ \\/
       a\
           '"$XGETTEXT_OPTIONS"' $${end_of_xgettext_options+}
     }

-  ' po/Makevars.template >po/Makevars
+  ' po/Makevars.template >po/Makevars || exit 1

 
   if test -d runtime-po; then
     # Similarly for runtime-po/Makevars, but not quite the same.
 
   if test -d runtime-po; then
     # Similarly for runtime-po/Makevars, but not quite the same.


@@ -825,7 +874,7 @@ if test $with_gettext = yes; then
         a\
             '"$XGETTEXT_OPTIONS_RUNTIME"' $${end_of_xgettext_options+}
       }
         a\
             '"$XGETTEXT_OPTIONS_RUNTIME"' $${end_of_xgettext_options+}
       }

-    ' <po/Makevars.template >runtime-po/Makevars
+    ' po/Makevars.template >runtime-po/Makevars || exit 1

 
     # Copy identical files from po to runtime-po.
     (cd po && cp -p Makefile.in.in *-quot *.header *.sed *.sin ../runtime-po)
 
     # Copy identical files from po to runtime-po.
     (cd po && cp -p Makefile.in.in *-quot *.header *.sed *.sin ../runtime-po)


@@ -836,6 +885,10 @@ bootstrap_epilogue
 
 echo "$0: done.  Now you can run './configure'."
 
 
 echo "$0: done.  Now you can run './configure'."
 

-# Local Variables:
-# indent-tabs-mode: nil
+# Local variables:
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-time-zone: "UTC"
+# time-stamp-end: "; # UTC"

 # End:
 # End: