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  #  To support the latter case, we have to write

  #     test -z "$(somedir)" || $(mkdir_p) $(DESTDIR)$(somedir),

  #  so the `.' trick is pointless.

  mkdir_p='mkdir -p --'

else

  # On NextStep and OpenStep, the `mkdir' command does not

  # recognize any option.  It will interpret all options as

  # directories to create, and then abort because `.' already

  # exists.

  for d in ./-p ./--version;

  do

    test -d $d && rmdir $d

  done

  # $(mkinstalldirs) is defined by Automake if mkinstalldirs exists.

  if test -f "$ac_aux_dir/mkinstalldirs"; then

    mkdir_p='$(mkinstalldirs)'

  else

    mkdir_p='$(install_sh) -d'

  fi

fi

AC_SUBST([mkdir_p])])

# Helper functions for option handling.                     -*- Autoconf -*-

# Copyright (C) 2001, 2002, 2003, 2005  Free Software Foundation, Inc.

#

# This file is free software; the Free Software Foundation

# gives unlimited permission to copy and/or distribute it,

# with or without modifications, as long as this notice is preserved.

# serial 3

# _AM_MANGLE_OPTION(NAME)

# -----------------------

AC_DEFUN([_AM_MANGLE_OPTION],

[[_AM_OPTION_]m4_bpatsubst($1, [[^a-zA-Z0-9_]], [_])])

# _AM_SET_OPTION(NAME)

# ------------------------------

# Set option NAME.  Presently that only means defining a flag for this option.

AC_DEFUN([_AM_SET_OPTION],

[m4_define(_AM_MANGLE_OPTION([$1]), 1)])

# _AM_SET_OPTIONS(OPTIONS)

# ----------------------------------

# OPTIONS is a space-separated list of Automake options.

AC_DEFUN([_AM_SET_OPTIONS],

[AC_FOREACH([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])])

# _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET])

# -------------------------------------------

# Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.

AC_DEFUN([_AM_IF_OPTION],

[m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])

# Check to make sure that the build environment is sane.    -*- Autoconf -*-

# Copyright (C) 1996, 1997, 2000, 2001, 2003, 2005

# Free Software Foundation, Inc.

#

# This file is free software; the Free Software Foundation

# gives unlimited permission to copy and/or distribute it,

# with or without modifications, as long as this notice is preserved.

# serial 4

# AM_SANITY_CHECK

# ---------------

AC_DEFUN([AM_SANITY_CHECK],

[AC_MSG_CHECKING([whether build environment is sane])

# Just in case

sleep 1

echo timestamp > conftest.file

# Do `set' in a subshell so we don't clobber the current shell's

# arguments.  Must try -L first in case configure is actually a

# symlink; some systems play weird games with the mod time of symlinks

# (eg FreeBSD returns the mod time of the symlink's containing

# directory).

if (

   set X `ls -Lt $srcdir/configure conftest.file 2> /dev/null`

   if test "$[*]" = "X"; then

      # -L didn't work.

      set X `ls -t $srcdir/configure conftest.file`

   fi

   rm -f conftest.file

   if test "$[*]" != "X $srcdir/configure conftest.file" \

      && test "$[*]" != "X conftest.file $srcdir/configure"; then

      # If neither matched, then we have a broken ls.  This can happen

      # if, for instance, CONFIG_SHELL is bash and it inherits a

      # broken ls alias from the environment.  This has actually

      # happened.  Such a system could not be considered "sane".

      AC_MSG_ERROR([ls -t appears to fail.  Make sure there is not a broken

alias in your environment])

   fi

   test "$[2]" = conftest.file

   )

then

   # Ok.

   :

else

   AC_MSG_ERROR([newly created file is older than distributed files!

Check your system clock])

fi

AC_MSG_RESULT(yes)])

# Copyright (C) 2001, 2003, 2005  Free Software Foundation, Inc.

#

# This file is free software; the Free Software Foundation

# gives unlimited permission to copy and/or distribute it,

# with or without modifications, as long as this notice is preserved.

# AM_PROG_INSTALL_STRIP

# ---------------------

# One issue with vendor `install' (even GNU) is that you can't

# specify the program used to strip binaries.  This is especially

# annoying in cross-compiling environments, where the build's strip

# is unlikely to handle the host's binaries.

# Fortunately install-sh will honor a STRIPPROG variable, so we

# always use install-sh in `make install-strip', and initialize

# STRIPPROG with the value of the STRIP variable (set by the user).

AC_DEFUN([AM_PROG_INSTALL_STRIP],

[AC_REQUIRE([AM_PROG_INSTALL_SH])dnl

# Installed binaries are usually stripped using `strip' when the user

# run `make install-strip'.  However `strip' might not be the right

# tool to use in cross-compilation environments, therefore Automake

# will honor the `STRIP' environment variable to overrule this program.

dnl Don't test for $cross_compiling = yes, because it might be `maybe'.

if test "$cross_compiling" != no; then

  AC_CHECK_TOOL([STRIP], [strip], :)

fi

INSTALL_STRIP_PROGRAM="\${SHELL} \$(install_sh) -c -s"

AC_SUBST([INSTALL_STRIP_PROGRAM])])

# Check how to create a tarball.                            -*- Autoconf -*-

# Copyright (C) 2004, 2005  Free Software Foundation, Inc.

#

# This file is free software; the Free Software Foundation

# gives unlimited permission to copy and/or distribute it,

# with or without modifications, as long as this notice is preserved.

# serial 2

# _AM_PROG_TAR(FORMAT)

# --------------------

# Check how to create a tarball in format FORMAT.

# FORMAT should be one of `v7', `ustar', or `pax'.

#

# Substitute a variable $(am__tar) that is a command

# writing to stdout a FORMAT-tarball containing the directory

# $tardir.

#     tardir=directory && $(am__tar) > result.tar

#

# Substitute a variable $(am__untar) that extract such

# a tarball read from stdin.

#     $(am__untar) < result.tar

AC_DEFUN([_AM_PROG_TAR],

[# Always define AMTAR for backward compatibility.

AM_MISSING_PROG([AMTAR], [tar])

m4_if([$1], [v7],

     [am__tar='${AMTAR} chof - "$$tardir"'; am__untar='${AMTAR} xf -'],

     [m4_case([$1], [ustar],, [pax],,

              [m4_fatal([Unknown tar format])])

AC_MSG_CHECKING([how to create a $1 tar archive])

# Loop over all known methods to create a tar archive until one works.

_am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'

_am_tools=${am_cv_prog_tar_$1-$_am_tools}

# Do not fold the above two line into one, because Tru64 sh and

# Solaris sh will not grok spaces in the rhs of `-'.

for _am_tool in $_am_tools

do

  case $_am_tool in

  gnutar)

    for _am_tar in tar gnutar gtar;

    do

      AM_RUN_LOG([$_am_tar --version]) && break

    done

    am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"'

    am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"'

    am__untar="$_am_tar -xf -"

    ;;

  plaintar)

    # Must skip GNU tar: if it does not support --format= it doesn't create

    # ustar tarball either.

    (tar --version) >/dev/null 2>&1 && continue

    am__tar='tar chf - "$$tardir"'

    am__tar_='tar chf - "$tardir"'

    am__untar='tar xf -'

    ;;

  pax)

    am__tar='pax -L -x $1 -w "$$tardir"'

    am__tar_='pax -L -x $1 -w "$tardir"'

    am__untar='pax -r'

    ;;

  cpio)

    am__tar='find "$$tardir" -print | cpio -o -H $1 -L'

    am__tar_='find "$tardir" -print | cpio -o -H $1 -L'

    am__untar='cpio -i -H $1 -d'

    ;;

  none)

    am__tar=false

    am__tar_=false

    am__untar=false

    ;;

  esac

  # If the value was cached, stop now.  We just wanted to have am__tar

  # and am__untar set.

  test -n "${am_cv_prog_tar_$1}" && break

  # tar/untar a dummy directory, and stop if the command works

  rm -rf conftest.dir

  mkdir conftest.dir

  echo GrepMe > conftest.dir/file

  AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar])

  rm -rf conftest.dir

  if test -s conftest.tar; then

    AM_RUN_LOG([$am__untar <conftest.tar])

    grep GrepMe conftest.dir/file >/dev/null 2>&1 && break

  fi

done

rm -rf conftest.dir

AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])

AC_MSG_RESULT([$am_cv_prog_tar_$1])])

AC_SUBST([am__tar])

AC_SUBST([am__untar])

]) # _AM_PROG_TAR

m4_include([acinclude.m4])