#! /bin/sh

# Print a version string.

scriptversion=2019-01-04.17; # UTC

# Bootstrap this package from checked-out sources.

# Copyright (C) 2003-2019 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 <https://www.gnu.org/licenses/>.

# 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.

LC_ALL=C

export LC_ALL

# Ensure that CDPATH is not set.  Otherwise, the output from cd

# would cause trouble in at least one use below.

(unset CDPATH) >/dev/null 2>&1 && unset CDPATH

local_gl_dir=gl

# Honor $PERL, but work even if there is none.

PERL="${PERL-perl}"

me=$0

default_gnulib_url=git://git.sv.gnu.org/gnulib

usage() {

  cat <

Usage: $me [OPTION]...

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.  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

are honored.

Gnulib sources can be fetched in various ways:

 * If this package is in a git repository with a 'gnulib' submodule

   configured, then that submodule is initialized and updated and sources

   are fetched from there.  If \$GNULIB_SRCDIR is set (directly or via

   --gnulib-srcdir) and is a git repository, then it is used as a reference.

 * Otherwise, if \$GNULIB_SRCDIR is set (directly or via --gnulib-srcdir),

   then sources are fetched from that local directory.  If it is a git

   repository and \$GNULIB_REVISION is set, then that revision is checked

   out.

 * Otherwise, if this package is in a git repository with a 'gnulib'

   submodule configured, then that submodule is initialized and updated and

   sources are fetched from there.

 * Otherwise, if the 'gnulib' directory does not exist, Gnulib sources are

   cloned into that directory using git from \$GNULIB_URL, defaulting to

   $default_gnulib_url.

   If \$GNULIB_REVISION is set, then that revision is checked out.

 * Otherwise, the existing Gnulib sources in the 'gnulib' directory are

   used.  If it is a git repository and \$GNULIB_REVISION is set, then that

   revision is checked out.

If you maintain a package and want to pin a particular revision of the

Gnulib sources that has been tested with your package, then there are two

possible approaches: either configure a 'gnulib' submodule with the

appropriate revision, or set \$GNULIB_REVISION (and if necessary

\$GNULIB_URL) in $me.conf.

Running without arguments will suffice in most cases.

EOF

}

# warnf_ FORMAT-STRING ARG1...

warnf_ ()

{

  warnf_format_=$1

  shift

  nl='

'

  case $* in

    *$nl*) me_=$(printf "$me"|tr "$nl|" '??')

       printf "$warnf_format_" "$@" | sed "s|^|$me_: |" ;;

    *) printf "$me: $warnf_format_" "$@" ;;

  esac >&2

}

# warn_ WORD1...

warn_ ()

{

  # If IFS does not start with ' ', set it and emit the warning in a subshell.

  case $IFS in

    ' '*) warnf_ '%s\n' "$*";;

    *)    (IFS=' '; warn_ "$@");;

  esac

}

# die WORD1...

die() { warn_ "$@"; exit 1; }

# Configuration.

# Name of the Makefile.am

gnulib_mk=gnulib.mk

# List of gnulib modules needed.

gnulib_modules=

# 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() { :; }

# The command to download all .po files for a specified domain into a

# specified directory.  Fill in the first %s with the destination

# directory and the second with the domain name.

po_download_command_format=\

"wget --mirror --level=1 -nd -q -A.po -P '%s' \

 https://translationproject.org/latest/%s/"

# Prefer a non-empty tarname (4th argument of AC_INIT if given), else

# fall back to the package name (1st argument with munging)

extract_package_name='

  /^AC_INIT(\[*/{

     s///

     /^[^,]*,[^,]*,[^,]*,[ []*\([^][ ,)]\)/{

       s//\1/

       s/[],)].*//

       p

       q

     }

     s/[],)].*//

     s/^GNU //

     y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/

     s/[^abcdefghijklmnopqrstuvwxyz0123456789_]/-/g

     p

  }

'

package=$(sed -n "$extract_package_name" configure.ac) \

  || die 'cannot find package name in configure.ac'

gnulib_name=lib$package

build_aux=build-aux

source_base=lib

m4_base=m4

doc_base=doc

tests_base=tests

gnulib_extra_files="

        build-aux/install-sh

        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.

gnulib_tool_option_extras=

# Other locale categories that need message catalogs.

EXTRA_LOCALE_CATEGORIES=

# Additional xgettext options to use.  Use "\\\newline" to break lines.

XGETTEXT_OPTIONS='\\\

 --flag=_:1:pass-c-format\\\

 --flag=N_:1:pass-c-format\\\

 --flag=error:3:c-format --flag=error_at_line:5:c-format\\\

'

# 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.

excluded_files=

# File that should exist in the top directory of a checked out hierarchy,

# but not in a distribution tarball.

checkout_only_file=README-hacking

# Whether to use copies instead of symlinks.

copy=false

# Set this to '.cvsignore .gitignore' in bootstrap.conf if you want

# those files to be generated in directories like lib/, m4/, and po/.

# Or set it to 'auto' to make this script select which to use based

# 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

check_exists() {

  if test "$1" = "--verbose"; then

    ($2 --version </dev/null) >/dev/null 2>&1

    if test $? -ge 126; then

      # If not found, run with diagnostics as one may be

      # presented with env variables to set to find the right version

      ($2 --version 

    fi

  else

    ($1 --version </dev/null) >/dev/null 2>&1

  fi

  test $? -lt 126

}

# 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.

# If found, set ENVVAR to the program name, die otherwise.

#

# FIXME: code duplication, see also gnu-web-doc-update.

find_tool ()

{

  find_tool_envvar=$1

  shift

  find_tool_names=$@

  eval "find_tool_res=\$$find_tool_envvar"

  if test x"$find_tool_res" = x; then

    for i; do

      if check_exists $i; then

        find_tool_res=$i

        break

      fi

    done

  fi

  if test x"$find_tool_res" = x; then

    warn_ "one of these is required: $find_tool_names;"

    die   "alternatively set $find_tool_envvar to a compatible tool"

  fi

  eval "$find_tool_envvar=\$find_tool_res"

  eval "export $find_tool_envvar"

}

# Override the default configuration, if necessary.

# 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=

  test -d .git && vc_ignore=.gitignore

  test -d CVS && vc_ignore="$vc_ignore .cvsignore"

fi

if test x"$gnulib_modules$gnulib_files$gnulib_extra_files" = x; then

  use_gnulib=false

else

  use_gnulib=true

fi

# Translate configuration into internal form.

# Parse options.

for option

do

  case $option in

  --help)

    usage

    exit;;

  --gnulib-srcdir=*)

    GNULIB_SRCDIR=${option#--gnulib-srcdir=};;

  --skip-po)

    SKIP_PO=t;;

  --force)

    checkout_only_file=;;

  --copy)

    copy=true;;

  --bootstrap-sync)

    bootstrap_sync=true;;

  --no-bootstrap-sync)

    bootstrap_sync=false;;

  --no-git)

    use_git=false;;

  *)

    die "$option: unknown option";;

  esac

done

$use_git || test -d "$GNULIB_SRCDIR" \

  || die "Error: --no-git requires --gnulib-srcdir"

if test -n "$checkout_only_file" && test ! -r "$checkout_only_file"; then

  die "Bootstrapping from a non-checked-out distribution is risky."

fi

# Strip blank and comment lines to leave significant entries.

gitignore_entries() {

  sed '/^#/d; /^$/d' "$@"

}

# If $STR is not already on a line by itself in $FILE, insert it at the start.

# Entries are inserted at the start of the ignore list to ensure existing

# entries starting with ! are not overridden.  Such entries support

# whitelisting exceptions after a more generic blacklist pattern.

insert_if_absent() {

  file=$1

  str=$2

  test -f $file || touch $file

  test -r $file || die "Error: failed to read ignore file: $file"

  duplicate_entries=$(gitignore_entries $file | sort | uniq -d)

  if [ "$duplicate_entries" ] ; then

    die "Error: Duplicate entries in $file: " $duplicate_entries

  fi

  linesold=$(gitignore_entries $file | wc -l)

  linesnew=$( { echo "$str"; cat $file; } | gitignore_entries | sort -u | wc -l)

  if [ $linesold != $linesnew ] ; then

    { echo "$str" | cat - $file > $file.bak && mv $file.bak $file; } \

      || die "insert_if_absent $file $str: failed"

  fi

}

# Adjust $PATTERN for $VC_IGNORE_FILE and insert it with

# insert_if_absent.

insert_vc_ignore() {

  vc_ignore_file="$1"

  pattern="$2"

  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=$(echo "$pattern" | sed s,^,/,);;

  esac

  insert_if_absent "$vc_ignore_file" "$pattern"

}

# Die if there is no AC_CONFIG_AUX_DIR($build_aux) line in configure.ac.

found_aux_dir=no

grep '^[	 ]*AC_CONFIG_AUX_DIR(\['"$build_aux"'\])' configure.ac \

    >/dev/null && found_aux_dir=yes

grep '^[	 ]*AC_CONFIG_AUX_DIR('"$build_aux"')' configure.ac \

    >/dev/null && found_aux_dir=yes

test $found_aux_dir = yes \

  || die "configure.ac lacks 'AC_CONFIG_AUX_DIR([$build_aux])'; add it"

# If $build_aux doesn't exist, create it now, otherwise some bits

# below will malfunction.  If creating it, also mark it as ignored.

if test ! -d $build_aux; then

  mkdir $build_aux

  for dot_ig in x $vc_ignore; do

    test $dot_ig = x && continue

    insert_vc_ignore $dot_ig $build_aux

  done

fi

# 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"

  # 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

}

get_version_sed='

# Move version to start of line.

s/.*[v ]\([0-9]\)/\1/

# Skip lines that do not start with version.

/^[0-9]/!d

# Remove characters after the version.

s/[^.a-z0-9-].*//

# The first component must be digits only.

s/^\([0-9]*\)[a-z-].*/\1/

#the following essentially does s/5.005/5.5/

s/\.0*\([1-9]\)/.\1/g

p

q'

get_version() {

  app=$1

  $app --version >/dev/null 2>&1 || { $app --version; return 1; }

  $app --version 2>&1 | sed -n "$get_version_sed"

}

check_versions() {

  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.)

    appvar=$(echo $app | LC_ALL=C tr '[a-z]-' '[A-Z]_')

    test "$appvar" = TAR && appvar=AMTAR

    case $appvar in

        GZIP) ;; # Do not use $GZIP:  it contains gzip options.

        PERL::*) ;; # Keep perl modules as-is

        *) eval "app=\${$appvar-$app}" ;;

    esac

    # Handle the still-experimental Automake-NG programs specially.

    # They remain named as the mainstream Automake programs ("automake",

    # and "aclocal") to avoid gratuitous incompatibilities with

    # pre-existing usages (by, say, autoreconf, or custom autogen.sh

    # scripts), but correctly identify themselves (as being part of

    # "GNU automake-ng") when asked their version.

    case $app in

      automake-ng|aclocal-ng)

        app=${app%-ng}

        ($app --version | grep '(GNU automake-ng)') >/dev/null 2>&1 || {

          warn_ "Error: '$app' not found or not from Automake-NG"

          ret=1

          continue

        } ;;

      # Another check is for perl modules.  These can be written as

      # e.g. perl::XML::XPath in case of XML::XPath module, etc.

      perl::*)

        # Extract module name

        app="${app#perl::}"

        if ! $PERL -m"$app" -e 'exit 0' >/dev/null 2>&1; then

          warn_ "Error: perl module '$app' not found"

          ret=1

        fi

        continue

        ;;

    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.

      if ! check_exists --verbose $app; then

        warn_ "Error: '$app' not found"

        ret=1

      fi

    else

      # Require app to produce a new enough version string.

      inst_ver=$(get_version $app)

      if [ ! "$inst_ver" ]; then

        warn_ "Error: '$app' not found"

        ret=1

      else

        latest_ver=$(sort_ver $req_ver $inst_ver | cut -d' ' -f2)

        if [ ! "$latest_ver" = "$inst_ver" ]; then

          warnf_ '%s\n'                                        \

              "Error: '$app' version == $inst_ver is too old"  \

              "       '$app' version >= $req_ver is required"

          ret=1

        fi

      fi

    fi

  done

  return $ret

}

print_versions() {

  echo "Program    Min_version"

  echo "----------------------"

  printf %s "$buildreq"

  echo "----------------------"

  # can't depend on column -t

}

# Find sha1sum, named gsha1sum on MacPorts, shasum on Mac OS X 10.6.

# Also find the compatible sha1 utility on the BSDs

if test x"$SKIP_PO" = x; then

  find_tool SHA1SUM sha1sum gsha1sum shasum sha1

fi

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

  case $buildreq in

    *patch*) ;;

    *) buildreq="patch -

$buildreq" ;;

  esac

fi

if ! printf "$buildreq" | check_versions; then

  echo >&2

  if test -f README-prereq; then

    die "See README-prereq for how to get the prerequisite programs"

  else

    die "Please install the prerequisite programs"

  fi

fi

# Warn the user if autom4te appears to be broken; this causes known

# issues with at least gettext 0.18.3.

probe=$(echo 'm4_quote([hi])' | autom4te -l M4sugar -t 'm4_quote:$%' -)

if test "x$probe" != xhi; then

  warn_ "WARNING: your autom4te wrapper eats stdin;"

  warn_ "if bootstrap fails, consider upgrading your autotools"

fi

echo "$0: Bootstrapping from checked-out $package sources..."

# See if we can use gnulib's git-merge-changelog merge driver.

if $use_git && test -d .git && check_exists git; then

  if git config merge.merge-changelog.driver >/dev/null ; then

    :

  elif check_exists git-merge-changelog; then

    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

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

  fi

fi

cleanup_gnulib() {

  status=$?

  rm -fr "$gnulib_path"

  exit $status

}

git_modules_config () {

  test -f .gitmodules && git config --file .gitmodules "$@"

}

if $use_gnulib; then

  if $use_git; then

    gnulib_path=$(git_modules_config submodule.gnulib.path)

    test -z "$gnulib_path" && gnulib_path=gnulib

  fi

  # Get gnulib files.  Populate $GNULIB_SRCDIR, possibly updating a

  # submodule, for use in the rest of the script.

  case ${GNULIB_SRCDIR--} in

  -)

    # Note that $use_git is necessarily true in this case.

    if git_modules_config submodule.gnulib.url >/dev/null; then

      echo "$0: getting gnulib files..."

      git submodule init -- "$gnulib_path" || exit $?

      git submodule update -- "$gnulib_path" || exit $?

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

      echo "$0: getting gnulib files..."

      trap cleanup_gnulib 1 2 13 15

      shallow=

      if test -z "$GNULIB_REVISION"; then

        git clone -h 2>&1 | grep -- --depth > /dev/null && shallow='--depth 2'

      fi

      git clone $shallow ${GNULIB_URL:-$default_gnulib_url} "$gnulib_path" \

        || cleanup_gnulib

      trap - 1 2 13 15

    fi

    GNULIB_SRCDIR=$gnulib_path

    ;;

  *)

    # Use GNULIB_SRCDIR directly or as a reference.

    if $use_git && test -d "$GNULIB_SRCDIR"/.git && \

          git_modules_config submodule.gnulib.url >/dev/null; then

      echo "$0: getting gnulib files..."

      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 -- "$gnulib_path" || 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 -- "$gnulib_path" \

            && git submodule update -- "$gnulib_path" \

            || exit $?

        fi

      fi

      GNULIB_SRCDIR=$gnulib_path

    fi

    ;;

  esac

  if test -d "$GNULIB_SRCDIR"/.git && test -n "$GNULIB_REVISION" \

     && ! git_modules_config submodule.gnulib.url >/dev/null; then

    (cd "$GNULIB_SRCDIR" && git checkout "$GNULIB_REVISION") || cleanup_gnulib

  fi

  # $GNULIB_SRCDIR now points to the version of gnulib to use, and

  # we no longer need to use git or $gnulib_path below here.

  if $bootstrap_sync; then

    cmp -s "$0" "$GNULIB_SRCDIR/build-aux/bootstrap" || {

      echo "$0: updating bootstrap and restarting..."

      case $(sh -c 'echo "$1"' -- a) in