path: root/gnulib-tool

#! /bin/sh
#
# Copyright (C) 2002, 2003, 2004, 2005 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 2, 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, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#

# This program is meant for authors or maintainers which want to import
# modules from gnulib into their packages.

progname=$0
package=gnulib
cvsdatestamp='$Date: 2005-03-04 19:36:42 $'
last_checkin_date=`echo "$cvsdatestamp" | sed -e 's,^\$[D]ate: ,,'`
version=`echo "$last_checkin_date" | sed -e 's/ .*$//' -e 's,/,-,g'`

# You can set AUTOCONFPATH to empty if autoconf 2.57 is already in your PATH.
AUTOCONFPATH=
#case $USER in
#  bruno )
#    AUTOCONFBINDIR=/packages/gnu-inst-autoconf/2.57/bin
#    AUTOCONFPATH="eval env PATH=${AUTOCONFBINDIR}:\$PATH "
#    ;;
#esac

AUTORECONF="${AUTOCONFPATH}autoreconf"

# func_usage
# outputs to stdout the --help usage message.
func_usage ()
{
  echo "\
Usage: gnulib-tool --list
       gnulib-tool --import [module1 ... moduleN]
       gnulib-tool --create-testdir --dir=directory module1 ... moduleN
       gnulib-tool --create-megatestdir --dir=directory [module1 ... moduleN]
       gnulib-tool --test --dir=directory module1 ... moduleN
       gnulib-tool --megatest --dir=directory [module1 ... moduleN]
       gnulib-tool --extract-description module
       gnulib-tool --extract-filelist module
       gnulib-tool --extract-dependencies module
       gnulib-tool --extract-autoconf-snippet module
       gnulib-tool --extract-automake-snippet module
       gnulib-tool --extract-include-directive module
       gnulib-tool --extract-license module
       gnulib-tool --extract-maintainer module

Operation modes:
      --list                print the available module names
      --import              import the given modules into the current package
      --create-testdir      create a scratch package with the given modules
      --create-megatestdir  create a mega scratch package with the given modules
                            one by one and all together
      --test                test the combination of the given modules
                            (recommended to use CC=\"gcc -Wall\" here)
      --megatest            test the given modules one by one and all together
                            (recommended to use CC=\"gcc -Wall\" here)
      --extract-description        extract the description
      --extract-filelist           extract the list of files
      --extract-dependencies       extract the dependencies
      --extract-autoconf-snippet   extract the snippet for configure.ac
      --extract-automake-snippet   extract the snippet for lib/Makefile.am
      --extract-include-directive  extract the #include directive
      --extract-license            report the license terms of the source files
                                   under lib/
      --extract-maintainer         report the maintainer(s) inside gnulib

Options:
      --dir=DIRECTORY       specify the target directory
                            For --import, this specifies where your
                            configure.ac can be found.  Defaults to current
                            directory.
      --lib=LIBRARY         Specify the library name.  Defaults to 'libgnu'.
      --source-base=DIRECTORY
                            Directory relative --dir where source code is
                            placed (default \"lib\"), for --import.
      --m4-base=DIRECTORY   Directory relative --dir where *.m4 macros are
                            placed (default \"m4\"), for --import.
      --lgpl                Abort if modules aren't available under the LGPL.
                            Also modify license template from GPL to LGPL.
      --libtool             Use libtool rules, for --import.
      --no-changelog        don't update or create ChangeLog files
      --dry-run             For --import, only print what would have been done.

Report bugs to <bug-gnulib@gnu.org>."
}

# func_version
# outputs to stdout the --version message.
func_version ()
{
  echo "$progname (GNU $package) $version"
  echo "Copyright (C) 2002 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
  echo "Written by" "Bruno Haible"
}

# func_fatal_error message
# outputs to stderr a fatal error message, and terminates the program.
func_fatal_error ()
{
  echo "gnulib-tool: *** $1" 1>&2
  echo "gnulib-tool: *** Stop." 1>&2
  exit 1
}

# func_cp_if_changed SRC DEST
# Like cp, but avoids munging timestamps if the file hasn't changed.
# Uses also the variables
# - dry_run         true if actions shall only be printed, blank otherwise
func_cp_if_changed ()
{
  if test $# -ne 2; then
    echo "usage: func_cp_if_changed SRC DEST" >&2
  fi
  test -n "$dry_run" && dry=echo
  if cmp "$1" "$2" >/dev/null 2>&1; then
    :
  else
    $dry cp -p "$1" "$2"
  fi
}

# func_mv_if_changed SRC DEST
# Like mv, but avoids munging timestamps if the file hasn't changed.
# Removes SRC if it is not renamed.
# Uses also the variables
# - dry_run         true if actions shall only be printed, blank otherwise
func_mv_if_changed ()
{
  if test $# -ne 2; then
    echo "usage: func_mv_if_changed SRC DEST" >&2
  fi
  test -n "$dry_run" && dry=echo
  if cmp "$1" "$2" >/dev/null 2>&1; then
    $dry rm "$1"
  else
    $dry mv "$1" "$2"
  fi
}

# Command-line option processing.
# Removes the OPTIONS from the arguments. Sets the variables:
# - mode            list or import or create-testdir or create-megatestdir
# - destdir         from --dir
# - libname, supplied_libname  from --lib
# - sourcebase      from --source-base
# - m4base          from --m4-base
# - libtool         true if --libtool was given, blank otherwise
# - lgpl            true if --lgpl was given, blank otherwise
# - do_changelog    false if --no-changelog was given, : otherwise
# - dry_run         true if --dry-run was given, blank otherwise
{
  mode=
  destdir=
  libname=libgnu
  supplied_libname=
  sourcebase=
  m4base=
  libtool=
  lgpl=
  do_changelog=:
  dry_run=
  lgpl=

  supplied_opts="$@"

  while test $# -gt 0; do
    case "$1" in
      --list | --lis )
        mode=list
        shift ;;
      --import | --impor | --impo | --imp | --im | --i )
        mode=import
        shift ;;
      --create-testdir | --create-testdi | --create-testd | --create-test | --create-tes | --create-te | --create-t )
        mode=create-testdir
        shift ;;
      --create-megatestdir | --create-megatestdi | --create-megatestd | --create-megatest | --create-megates | --create-megate | --create-megat | --create-mega | --create-meg | --create-me | --create-m )
        mode=create-megatestdir
        shift ;;
      --test | --tes | --te | --t )
        mode=test
        shift ;;
      --megatest | --megates | --megate | --megat | --mega | --meg | --me | --m )
        mode=megatest
        shift ;;
      --extract-* )
        mode=`echo "X$1" | sed -e 's/^X--//'`
        shift ;;
      --dir )
        shift
        if test $# = 0; then
          func_fatal_error "missing argument for --dir"
        fi
        destdir=$1
        shift ;;
      --dir=* )
        destdir=`echo "X$1" | sed -e 's/^X--dir=//'`
        shift ;;
      --lib )
        shift
        if test $# = 0; then
          func_fatal_error "missing argument for --lib"
        fi
        libname=$1
        supplied_libname=true
        shift ;;
      --lib=* )
        libname=`echo "X$1" | sed -e 's/^X--lib=//'`
        supplied_libname=true
        shift ;;
      --source-base )
        shift
        if test $# = 0; then
          func_fatal_error "missing argument for --source-base"
        fi
        sourcebase=$1
        shift ;;
      --source-base=* )
        sourcebase=`echo "X$1" | sed -e 's/^X--source-base=//'`
        shift ;;
      --m4-base )
        shift
        if test $# = 0; then
          func_fatal_error "missing argument for --m4-base"
        fi
        m4base=$1
        shift ;;
      --m4-base=* )
        m4base=`echo "X$1" | sed -e 's/^X--m4-base=//'`
        shift ;;
      --libtool )
        libtool=true
        shift ;;
      --lgpl )
        lgpl=true
        shift ;;
      --no-changelog | --no-changelo | --no-changel | --no-change | --no-chang | --no-chan | --no-cha | --no-ch | --no-c )
        do_changelog=false
        shift ;;
      --dry-run )
        dry_run=true
        shift ;;
      --help | --hel | --he | --h )
        func_usage
        exit 0 ;;
      --version | --versio | --versi | --vers | --ver | --ve | --v )
        func_version
        exit 0 ;;
      -- )
        # Stop option prcessing
        shift
        break ;;
      -* )
        echo "gnulib-tool: unknown option $1" 1>&2
        echo "Try 'gnulib-tool --help' for more information." 1>&2
        exit 1 ;;
      * )
        break ;;
    esac
  done
}

case "$0" in
  /*) self_abspathname="$0" ;;
  */*) self_abspathname=`pwd`/"$0" ;;
  *) for d in `echo ":$PATH:" | sed -e 's/:::*/:.:/g' | sed -e 's/:/ /g'`; do
       if test -x "$d/$0" && test ! -d "$d/$0"; then
         self_abspathname="$d/$0"
         break
       fi
     done
     if test -z "$self_abspathname"; then
       func_fatal_error "could not locate the gnulib-tool program - how did you invoke it?"
     fi
     ;;
esac
while test -h "$self_abspathname"; do
  # Resolve symbolic link.
  sedexpr1='s, -> ,#%%#,'
  sedexpr2='s,^.*#%%#\(.*\)$,\1,p'
  linkval=`LC_ALL=C ls -l "$self_abspathname" | sed -e "$sedexpr1" | sed -n -e "$sedexpr2"`
  test -n "$linkval" || break
  case "$linkval" in
    /* ) self_abspathname="$linkval" ;;
    * ) self_abspathname=`echo "$self_abspathname" | sed -e 's,/[^/]*$,,'`/"$linkval" ;;
  esac
done
gnulib_dir=`echo "$self_abspathname" | sed -e 's,/[^/]*$,,'`

# func_all_modules
func_all_modules ()
{
  (cd "$gnulib_dir/modules" && ls -1) \
      | sed -e '/^CVS$/d' -e '/^ChangeLog$/d' -e '/^README$/d' -e '/^TEMPLATE$/d' -e '/~$/d' \
      | sort
}

# func_verify_module
# verifies a module name
func_verify_module ()
{
  if test ! -f "$gnulib_dir/modules/$module" \
     || test "CVS" = "$module" \
     || test "ChangeLog" = "$module" \
     || test "README" = "$module" \
     || test "TEMPLATE" = "$module"; then
    echo "gnulib-tool: module $module doesn't exist" 1>&2
    module=
  fi
}

sed_extract_prog=':[ 	]*$/ {
  :a
    n
    s/^Description:[ 	]*$//
    s/^Files:[ 	]*$//
    s/^Depends-on:[ 	]*$//
    s/^configure\.ac:[ 	]*$//
    s/^Makefile\.am:[ 	]*$//
    s/^Include:[ 	]*$//
    s/^License:[ 	]*$//
    s/^Maintainer:[ 	]*$//
    tb
    p
    ba
  :b
}'

# func_get_description module
func_get_description ()
{
  sed -n -e "/^Description$sed_extract_prog" < "$gnulib_dir/modules/$1"
}

# func_get_filelist module
func_get_filelist ()
{
  sed -n -e "/^Files$sed_extract_prog" < "$gnulib_dir/modules/$1"
  #echo m4/onceonly.m4
  echo m4/onceonly_2_57.m4
}

# func_get_dependencies module
func_get_dependencies ()
{
  sed -n -e "/^Depends-on$sed_extract_prog" < "$gnulib_dir/modules/$1"
}

# func_get_autoconf_snippet module
func_get_autoconf_snippet ()
{
  sed -n -e "/^configure\.ac$sed_extract_prog" < "$gnulib_dir/modules/$1"
}

# func_get_automake_snippet module
func_get_automake_snippet ()
{
  sed -n -e "/^Makefile\.am$sed_extract_prog" < "$gnulib_dir/modules/$1"
}

# func_get_include_directive module
func_get_include_directive ()
{
  sed -n -e "/^Include$sed_extract_prog" < "$gnulib_dir/modules/$1" | \
  sed -e 's/^\(["<]\)/#include \1/'
}

# func_get_license module
func_get_license ()
{
  sed -n -e "/^License$sed_extract_prog" < "$gnulib_dir/modules/$1"
}

# func_get_maintainer module
func_get_maintainer ()
{
  sed -n -e "/^Maintainer$sed_extract_prog" < "$gnulib_dir/modules/$1"
}

# func_modules_transitive_closure
# Input:
# - modules         list of specified modules
# Output:
# - modules         list of modules, including dependencies
func_modules_transitive_closure ()
{
  while true; do
    xmodules=
    for module in $modules; do
      func_verify_module
      if test -n "$module"; then
        # Duplicate dependenies are harmless, but Jim wants a warning.
        duplicated_deps=`func_get_dependencies $module | sort | uniq -d`
        if test -n "$duplicated_deps"; then
          echo "warning: module $module has duplicated dependencies: "`echo $duplicated_deps` 1>&2
        fi
        xmodules="$xmodules $module "`func_get_dependencies $module`
      fi
    done
    xmodules=`for m in $xmodules; do echo $m; done | sort | uniq`
    if test "$xmodules" = "$modules"; then
      break
    fi
    modules="$xmodules"
  done
}

# func_modules_to_filelist
# Input:
# - modules         list of modules, including dependencies
# Output:
# - files           list of files
func_modules_to_filelist ()
{
  files=
  for module in $modules; do
    func_verify_module
    if test -n "$module"; then
      files="$files "`func_get_filelist $module`
    fi
  done
  files=`for f in $files; do echo $f; done | sort | uniq`
}

# func_emit_lib_Makefile_am
# emits the contents of lib/Makefile.am to standard output.
# Input:
# - modules         list of modules, including dependencies
# - libname         library name
# - libtool         true if libtool will be used, blank otherwise
# - cmd             (optional) command that led to this invocation
# - actioncmd       (optional) command that will reproduce this invocation
func_emit_lib_Makefile_am ()
{
  if test -n "$libtool"; then
    libext=la
    perhapsLT=LT
  else
    libext=a
    perhapsLT=
  fi
  echo "## Process this file with automake to produce Makefile.in."
  echo "# Copyright (C) 2004 Free Software Foundation, Inc."
  echo "#"
  echo "# This file is free software, distributed under the terms of the GNU"
  echo "# General Public License.  As a special exception to the GNU General"
  echo "# Public License, this file may be distributed as part of a program"
  echo "# that contains a configuration script generated by Automake, under"
  echo "# the same distribution terms as the rest of that program."
  echo "#"
  echo "# Generated by gnulib-tool."
  if test -n "$cmd"; then
    echo "# Invoked as: $cmd"
  fi
  if test -n "$actioncmd"; then
    echo "# Reproduce by: $actioncmd"
  fi
  echo
  # No need to generate dependencies since the sources are in gnulib, not here.
  echo "AUTOMAKE_OPTIONS = 1.5 gnits no-dependencies"
  echo
  echo "noinst_${perhapsLT}LIBRARIES = $libname.$libext"
  echo
  echo "${libname}_${libext}_SOURCES ="
  echo "${libname}_${libext}_LIBADD = @${perhapsLT}LIBOBJS@"
  echo "EXTRA_DIST ="
  echo "BUILT_SOURCES ="
  echo "SUFFIXES ="
  echo "MOSTLYCLEANFILES ="
  echo "CLEANFILES ="
  echo "DISTCLEANFILES ="
  echo "MAINTAINERCLEANFILES ="
  echo
  for module in $modules; do
    func_verify_module
    if test -n "$module"; then
      {
        func_get_automake_snippet "$module" |
          sed -e 's,lib_\([A-Z][A-Z]*\),'"${libname}_${libext}"'_\1,g'
        if test "$module" = 'alloca'; then
          echo "${libname}_${libext}_LIBADD += @${perhapsLT}ALLOCA@"
        fi
      } > amsnippet.tmp
      # Skip the contents if its entirely empty.
      if grep '[^ 	]' amsnippet.tmp > /dev/null ; then
        echo "## begin gnulib module $module"
        echo
        cat amsnippet.tmp
        echo "## end   gnulib module $module"
        echo
      fi
      rm -f amsnippet.tmp
    fi
  done
  echo
  echo "# Makefile.am ends here"
}

# func_import modules
# Uses also the variables
# - destdir         target directory
# - libname         library name
# - sourcebase      directory relative to destdir where to place source code
# - m4base          directory relative to destdir where to place *.m4 macros
# - libtool         true if libtool will be used, blank otherwise
# - lgpl            true if library's license shall be LGPL, blank otherwise
# - dry_run         true if actions shall only be printed, blank otherwise
# - supplied_opts   all options passed to gnulib-tool
func_import ()
{
  modules="$1"
  modules=`for m in $modules; do echo $m; done | sort | uniq`

  # Determine final module list.
  func_modules_transitive_closure
  echo "Module list with included dependencies:"
  echo "$modules" | sed -e 's/^/  /'

  # If --lgpl, check the license of modules are compatible.
  if test -n "$lgpl"; then
    for module in $modules; do
      license=`func_get_license $module`
      if test $license != LGPL; then
        func_fatal_error "incompatible license on module \`$module\`: $license"
      fi
    done
  fi

  # Determine final file list.
  func_modules_to_filelist
  echo "File list:"
  echo "$files" | sed -e 's/^/  /'

  test -n "$files" \
    || func_fatal_error "refusing to do nothing"

  # Copy files.
  for f in $files; do
    source=
    case "$f" in
      config/*) g=`echo "$f" | sed -e 's,^config/,,'` ;;
      lib/*) g=`echo "$f" | sed -e "s,^lib/,$sourcebase/,"`; source=true ;;
      m4/*) g=`echo "$f" | sed -e "s,^m4/,$m4base/,"` ;;
      *) g="$f" ;;
    esac
    func_cp_if_changed "$gnulib_dir/$f" "$destdir/$g"
    # Update license.
    if test -z "$dry_run" && test -n "$lgpl" && test -n "$source"; then
      perl -pi -e 's/GNU General/GNU Lesser General/g;' \
               -e 's/version 2([ ,])/version 2.1\1/g' \
               $destdir/$g
    fi
  done

  # Commands printed in a comment in generated files.
  cmd="gnulib-tool $supplied_opts"
  opt_libtool=
  if test -n "$libtool"; then
    opt_libtool="--libtool"
  fi
  opt_lgpl=
  if test -n "$lgpl"; then
    opt_lgpl="--lgpl"
  fi
  actioncmd="gnulib-tool --import --dir=$destdir --lib=$libname --source-base=$sourcebase --m4-base=$m4base $opt_libtool $opt_lgpl `echo $modules`"

  # Create lib/Makefile.am.
  echo "Creating $destdir/$sourcebase/Makefile.am..."
  if test -z "$dry_run"; then
    func_emit_lib_Makefile_am > $destdir/$sourcebase/Makefile.am.new
  else
    func_emit_lib_Makefile_am
  fi
  func_mv_if_changed $destdir/$sourcebase/Makefile.am.new \
                     $destdir/$sourcebase/Makefile.am

  # Create gnulib.m4.
  echo "Creating $destdir/$m4base/gnulib.m4..."
  (
    if test -z "$dry_run"; then
      exec > $destdir/$m4base/gnulib.m4.new
    else
      echo "# $destdir/$m4base/gnulib.m4"
    fi
    echo "# Copyright (C) 2004 Free Software Foundation, Inc."
    echo "# This file is free software, distributed under the terms of the GNU"
    echo "# General Public License.  As a special exception to the GNU General"
    echo "# Public License, this file may be distributed as part of a program"
    echo "# that contains a configuration script generated by Autoconf, under"
    echo "# the same distribution terms as the rest of that program."
    echo "#"
    echo "# Generated by gnulib-tool."
    echo "#"
    echo "# Invoked as: $cmd"
    echo "# Reproduce by: $actioncmd"
    echo
    echo "AC_DEFUN([gl_EARLY],"
    echo "["
    if grep AC_GNU_SOURCE "$destdir"/$m4base/*.m4 > /dev/null; then
      echo "  AC_GNU_SOURCE"
    fi
    if grep gl_USE_SYSTEM_EXTENSIONS "$destdir"/$m4base/*.m4 > /dev/null; then
      echo "  gl_USE_SYSTEM_EXTENSIONS"
    fi
    echo "])"
    echo
    echo "AC_DEFUN([gl_INIT],"
    echo "["
    for module in $modules; do
      func_verify_module
      if test -n "$module"; then
        func_get_autoconf_snippet "$module" | sed -e '/^$/d;' -e 's/^/  /' -e 's/AM_GNU_GETTEXT(\[external\])/dnl you must add AM_GNU_GETTEXT([external]) or similar to configure.ac./'
        if test "$module" = 'alloca' && test -n "$libtool"; then
          echo 'changequote(,)dnl'
          echo 'LTALLOCA=`echo "$ALLOCA" | sed '"'"'s/\.[^.]* /.lo /g;s/\.[^.]*$/.lo/'"'"'`'
          echo 'changequote([, ])dnl'
          echo 'AC_SUBST(LTALLOCA)'
        fi
      fi
    done
    echo "])"
    echo
    echo "dnl Usage: gl_MODULES(module1 module2 ...)"
    echo "AC_DEFUN([gl_MODULES], [])"
    echo
    echo "dnl Usage: gl_SOURCE_BASE(DIR)"
    echo "AC_DEFUN([gl_SOURCE_BASE], [])"
    echo
    echo "dnl Usage: gl_M4_BASE(DIR)"
    echo "AC_DEFUN([gl_M4_BASE], [])"
    echo
    echo "dnl Usage: gl_LIB(LIBNAME)"
    echo "AC_DEFUN([gl_LIB], [])"
    echo
    echo "dnl Usage: gl_LGPL"
    echo "AC_DEFUN([gl_LGPL], [])"
    echo
    echo "# gnulib.m4 ends here"
  )
  func_mv_if_changed $destdir/$m4base/gnulib.m4.new $destdir/$m4base/gnulib.m4
  echo "Finished."
  echo
  echo "You may need to add #include directives for the following .h files."
  for module in $modules; do
    func_get_include_directive "$module" | sed -e '/^$/d;' -e 's/^/  /'
  done
  echo
  echo "Don't forget to add \"$sourcebase/Makefile\""
  echo "to AC_CONFIG_FILES in \"$configure_ac\" and to mention"
  echo "\"`basename $sourcebase`\" in SUBDIRS in some Makefile.am."
}

# func_create_testdir testdir modules
func_create_testdir ()
{
  testdir="$1"
  modules="$2"
  modules=`for m in $modules; do echo $m; done | sort | uniq`

  # Determine final module list.
  func_modules_transitive_closure
  echo "Module list with included dependencies:"
  echo "$modules" | sed -e 's/^/  /'

  # Determine final file list.
  func_modules_to_filelist
  echo "File list:"
  echo "$files" | sed -e 's/^/  /'

  # Create directories.
  for d in `echo "$files" | sed -n -e 's,^\(.*\)/[^/]*,\1,p'`; do
    if test "$d" != config; then
      mkdir -p "$testdir/$d"
    fi
  done

  # Copy files.
  for f in $files; do
    case "$f" in
      config/*) g=`echo "$f" | sed -e 's,^config/,,'` ;;
      *) g="$f" ;;
    esac
    ln "$gnulib_dir/$f" "$testdir/$g" 2>/dev/null ||
    cp -p "$gnulib_dir/$f" "$testdir/$g"
  done

  # Create lib/Makefile.am.
  mkdir -p "$testdir/lib"
  func_emit_lib_Makefile_am > "$testdir/lib/Makefile.am"

  # Create m4/Makefile.am.
  mkdir -p "$testdir/m4"
  (echo "## Process this file with automake to produce Makefile.in."
   echo
   echo "EXTRA_DIST ="
   for f in $files; do
     case "$f" in
       m4/* )
         echo "EXTRA_DIST += "`echo "$f" | sed -e 's,^m4/,,'` ;;
     esac
   done
  ) > "$testdir/m4/Makefile.am"

  subdirs="lib m4"

  if test -f "$testdir"/m4/gettext.m4; then
    # Avoid stupid error message from automake:
    # "AM_GNU_GETTEXT used but `po' not in SUBDIRS"
    mkdir -p "$testdir/po"
    (echo "## Process this file with automake to produce Makefile.in."
    ) > "$testdir/po/Makefile.am"
    subdirs="$subdirs po"
  fi

  # Create Makefile.am.
  (echo "## Process this file with automake to produce Makefile.in."
   echo
   echo "AUTOMAKE_OPTIONS = 1.5 foreign"
   echo
   echo "SUBDIRS = $subdirs"
   echo
   echo "ACLOCAL_AMFLAGS = -I m4"
  ) > "$testdir/Makefile.am"

  # Create configure.ac.
  (echo "# Process this file with autoconf to produce a configure script."
   echo "AC_INIT(dummy,0)"
   echo "AM_INIT_AUTOMAKE"
   echo
   echo "AM_CONFIG_HEADER(config.h)"
   echo
   echo "AC_PROG_CC"
   echo "AC_PROG_INSTALL"
   echo "AC_PROG_MAKE_SET"
   echo "AC_PROG_RANLIB"
   echo
   if grep AC_GNU_SOURCE "$testdir"/m4/*.m4 > /dev/null; then
     echo "AC_GNU_SOURCE"
     echo
   fi
   if grep gl_USE_SYSTEM_EXTENSIONS "$testdir"/m4/*.m4 > /dev/null; then
     echo "gl_USE_SYSTEM_EXTENSIONS"
     echo
   fi
   for module in $modules; do
     func_verify_module
     if test -n "$module"; then
       func_get_autoconf_snippet "$module"
     fi
   done
   echo
   makefiles="Makefile"
   for d in $subdirs; do
     makefiles="$makefiles $d/Makefile"
   done
   echo "AC_OUTPUT([$makefiles])"
  ) > "$testdir/configure.ac"

  # Create autogenerated files.
  (cd "$testdir"
   echo "executing ${AUTORECONF} --force --install"
   ${AUTORECONF} --force --install
  )
  if grep '^BUILT_SOURCES *+=' "$testdir/lib/Makefile.am" > /dev/null; then
    (cd "$testdir"
     ./configure
       cd lib
       built_sources=`grep '^BUILT_SOURCES *=' Makefile.in | sed -e 's/^BUILT_SOURCES *=//'`
       if test -n "$built_sources"; then
         make $built_sources
       fi
       cd ..
     make distclean
    )
  fi
}

# func_create_megatestdir megatestdir allmodules
func_create_megatestdir ()
{
  megatestdir="$1"
  allmodules="$2"
  if test -z "$allmodules"; then
    allmodules=`func_all_modules`
  fi

  megasubdirs=
  # First, all modules one by one.
  for onemodule in $allmodules; do
    func_create_testdir "$megatestdir/$onemodule" $onemodule
    megasubdirs="${megasubdirs}$onemodule "
  done
  # Then, all modules all together.
  # Except fnmatch-posix, which conflicts with fnmatch-gnu. FIXME.
  allmodules=`for m in $allmodules; do if test $m != fnmatch-posix; then echo $m; fi; done`
  func_create_testdir "$megatestdir/ALL" "$allmodules"
  megasubdirs="${megasubdirs}ALL"

  # Create Makefile.am.
  (echo "## Process this file with automake to produce Makefile.in."
   echo
   echo "AUTOMAKE_OPTIONS = 1.5 foreign"
   echo
   echo "SUBDIRS = $megasubdirs"
  ) > "$megatestdir/Makefile.am"

  # Create configure.ac.
  (echo "# Process this file with autoconf to produce a configure script."
   echo "AC_INIT(dummy,0)"
   echo "AM_INIT_AUTOMAKE"
   echo
   echo "AC_PROG_MAKE_SET"
   echo
   echo "AC_CONFIG_SUBDIRS([$megasubdirs])"
   echo "AC_OUTPUT([Makefile])"
  ) > "$megatestdir/configure.ac"

  # Create autogenerated files.
  (cd "$megatestdir"
   echo "executing ${AUTORECONF} --force --install"
   ${AUTORECONF} --force --install
  )
}

case $mode in
  "" )
    func_fatal_error "no mode specified" ;;

  list )
    func_all_modules
    ;;

  import )
    # Where to import.
    if test -z "$destdir"; then
      destdir=.
    fi
    test -d "$destdir" \
      || func_fatal_error "destination directory does not exist: $destdir"

    # Prefer configure.ac to configure.in
    test -f $destdir/configure.in && configure_ac=$destdir/configure.in
    test -f $destdir/configure.ac && configure_ac=$destdir/configure.ac
    test -f "$configure_ac" \
      || func_fatal_error "cannot find $destdir/configure.ac"

    # Get settings.
    my_sed_traces='s,#.*$,,; s,^dnl .*$,,; s, dnl .*$,,;
      /gl_MODULES[^_]/  {
        s,^.*gl_MODULES([[   ]*\([^])]*\).*$,ac_modules="\1",; p;
      };
      /gl_SOURCE_BASE/   {
        s,^.*gl_SOURCE_BASE([[         ]*\([^])]*\).*$,ac_sourcebase="\1",; p;
      };
      /gl_M4_BASE/   {
        s,^.*gl_M4_BASE([[         ]*\([^])]*\).*$,ac_m4base="\1",; p;
      };
      /gl_LIB/   {
        s,^.*gl_LIB([[         ]*\([^])]*\).*$,ac_libname="\1",; p;
      };
      /A[CM]_PROG_LIBTOOL/ { s,^.*$,seen_libtool=:,; p; };
      /LT_INIT/            { s,^.*$,seen_libtool=:,; p; };
      /gl_LGPL/            { s,^.*$,lgpl=true,; p; };
      d;'
    eval `cat $configure_ac | sed "$my_sed_traces"`

    # Override libname?
    if test -z "$supplied_libname" && test -n "$ac_libname"; then
      libname="$ac_libname"
    fi

    # Set up source base.
    test -z "$sourcebase" && sourcebase="$ac_sourcebase"
    test -z "$sourcebase" && sourcebase="lib"
    test -d "$destdir/$sourcebase" \
      || (test -z "$dry_run" && mkdir "$destdir/$sourcebase") \
      || func_fatal_error "source base $destdir/$sourcebase doesn't exist"

    # Set up m4 base.
    test -z "$m4base" && m4base="$ac_m4base"
    test -z "$m4base" && m4base="m4"
    test -d "$destdir/$m4base" \
      || (test -z "$dry_run" && mkdir "$destdir/$m4base") \
      || func_fatal_error "m4 base $destdir/$m4base doesn't exist"

    # Using libtool?
    if test -n "$seen_libtool"; then
      libtool=true
    fi

    # What modules to extract.
    if test $# = 0; then
      modules="$ac_modules"
    else
      modules="$*"
    fi

    func_import "$modules"
    ;;

  create-testdir )
    if test -z "$destdir"; then
      func_fatal_error "please specify --dir option"
    fi
    mkdir "$destdir"
    test -d "$destdir" \
      || func_fatal_error "could not create destination directory"
    func_create_testdir "$destdir" "$*"
    ;;

  create-megatestdir )
    if test -z "$destdir"; then
      func_fatal_error "please specify --dir option"
    fi
    mkdir "$destdir" || func_fatal_error "could not create destination directory"
    func_create_megatestdir "$destdir" "$*"
    ;;

  test )
    test -n "$destdir" || destdir=testdir$$
    mkdir "$destdir" || func_fatal_error "could not create destination directory"
    func_create_testdir "$destdir" "$*"
    cd "$destdir"
      mkdir build
      cd build
        ../configure
        make
        make check
        make distclean
        remaining=`find . -type f -print`
        if test -n "$remaining"; then
          echo "Remaining files:" $remaining 1>&2
          echo "gnulib-tool: *** Stop." 1>&2
          exit 1
        fi
      cd ..
    cd ..
    rm -rf "$destdir"
    ;;

  megatest )
    test -n "$destdir" || destdir=testdir$$
    mkdir "$destdir" || func_fatal_error "could not create destination directory"
    func_create_megatestdir "$destdir" "$*"
    cd "$destdir"
      mkdir build
      cd build
        ../configure
        make
        make check
        make distclean
        remaining=`find . -type f -print`
        if test -n "$remaining"; then
          echo "Remaining files:" $remaining 1>&2
          echo "gnulib-tool: *** Stop." 1>&2
          exit 1
        fi
      cd ..
    cd ..
    rm -rf "$destdir"
    ;;

  extract-description )
    for module
    do
      func_verify_module
      if test -n "$module"; then
        func_get_description "$module"
      fi
    done
    ;;

  extract-filelist )
    for module
    do
      func_verify_module
      if test -n "$module"; then
        func_get_filelist "$module"
      fi
    done
    ;;

  extract-dependencies )
    for module
    do
      func_verify_module
      if test -n "$module"; then
        func_get_dependencies "$module"
      fi
    done
    ;;

  extract-autoconf-snippet )
    for module
    do
      func_verify_module
      if test -n "$module"; then
        func_get_autoconf_snippet "$module"
      fi
    done
    ;;

  extract-automake-snippet )
    for module
    do
      func_verify_module
      if test -n "$module"; then
        func_get_automake_snippet "$module"
      fi
    done
    ;;

  extract-include-directive )
    for module
    do
      func_verify_module
      if test -n "$module"; then
        func_get_include_directive "$module"
      fi
    done
    ;;

  extract-license )
    for module
    do
      func_verify_module
      if test -n "$module"; then
        func_get_license "$module"
      fi
    done
    ;;

  extract-maintainer )
    for module
    do
      func_verify_module
      if test -n "$module"; then
        func_get_maintainer "$module"
      fi
    done
    ;;

  * )
    func_fatal_error "unknown operation mode --$mode" ;;
esac

exit 0