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# This file is part of Autoconf.                       -*- Autoconf -*-
# Parameterizing and creating config.status.
# Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
# 2002, 2003 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.

# As a special exception, the Free Software Foundation gives unlimited
# permission to copy, distribute and modify the configure scripts that
# are the output of Autoconf.  You need not follow the terms of the GNU
# General Public License when using or distributing such scripts, even
# though portions of the text of Autoconf appear in them.  The GNU
# General Public License (GPL) does govern all other use of the material
# that constitutes the Autoconf program.
#
# Certain portions of the Autoconf source text are designed to be copied
# (in certain cases, depending on the input) into the output of
# Autoconf.  We call these the "data" portions.  The rest of the Autoconf
# source text consists of comments plus executable code that decides which
# of the data portions to output in any given case.  We call these
# comments and executable code the "non-data" portions.  Autoconf never
# copies any of the non-data portions into its output.
#
# This special exception to the GPL applies to versions of Autoconf
# released by the Free Software Foundation.  When you make and
# distribute a modified version of Autoconf, you may extend this special
# exception to the GPL to apply to your modified version as well, *unless*
# your modified version has the potential to copy into its output some
# of the text that was the non-data portion of the version that you started
# with.  (In other words, unless your change moves or copies text from
# the non-data portions to the data portions.)  If your modification has
# such potential, you must delete any notice of this special exception
# to the GPL from your modified version.
#
# Written by David MacKenzie, with help from
# Franc,ois Pinard, Karl Berry, Richard Pixley, Ian Lance Taylor,
# Roland McGrath, Noah Friedman, david d zuhn, and many others.


# This file handles about all the preparation aspects for
# `config.status': registering the configuration files, the headers,
# the links, and the commands `config.status' will run.  There is a
# little mixture though of things actually handled by `configure',
# such as running the `configure' in the sub directories.  Minor
# detail.
#
# There are two kinds of commands:
#
# COMMANDS:
#
#   They are output into `config.status' via a quoted here doc.  These
#   commands are always associated to a tag which the user can use to
#   tell `config.status' what are the commands she wants to run.
#
# INIT-CMDS:
#
#   They are output via an *unquoted* here-doc.  As a consequence $var
#   will be output as the value of VAR.  This is typically used by
#   `configure' to give `config,.status' some variables it needs to run
#   the COMMANDS.  At the difference of `COMMANDS', the INIT-CMDS are
#   always run.
#
#
# Some uniformity exists around here, please respect it!
#
# A macro named AC_CONFIG_FOOS has three args: the `TAG...' (or
# `FILE...'  when it applies), the `COMMANDS' and the `INIT-CMDS'.  It
# first checks that TAG was not registered elsewhere thanks to
# AC_CONFIG_UNIQUE.  Then it registers `TAG...' in AC_LIST_FOOS, and for
# each `TAG', a special line in AC_LIST_FOOS_COMMANDS which is used in
# `config.status' like this:
#
#         case $ac_tag in
#           AC_LIST_FOOS_COMMANDS
#         esac
#
# Finally, the `INIT-CMDS' are dumped into a special diversion, via
# `_AC_CONFIG_COMMANDS_INIT'.  While `COMMANDS' are output once per TAG,
# `INIT-CMDS' are dumped only once per call to AC_CONFIG_FOOS.
#
# It also leave the TAG in the shell variable ac_config_foo which contains
# those which will actually be executed.  In other words:
#
#       if false; then
#         AC_CONFIG_FOOS(bar, [touch bar])
#       fi
#
# will not create bar.
#
# AC_CONFIG_FOOS can be called several times (with different TAGs of
# course).
#
# Because these macros should not output anything, there should be `dnl'
# everywhere.  A pain my friend, a pain.  So instead in each macro we
# divert(-1) and restore the diversion at the end.
#
#
# Honorable members of this family are AC_CONFIG_FILES,
# AC_CONFIG_HEADERS, AC_CONFIG_LINKS and AC_CONFIG_COMMANDS.  Bad boys
# are AC_LINK_FILES, AC_OUTPUT_COMMANDS and AC_OUTPUT when used with
# arguments.  False members are AC_CONFIG_SRCDIR, AC_CONFIG_SUBDIRS
# and AC_CONFIG_AUX_DIR.  Cousins are AC_CONFIG_COMMANDS_PRE and
# AC_CONFIG_COMMANDS_POST.


## ------------------ ##
## Auxiliary macros.  ##
## ------------------ ##

# _AC_SRCPATHS(BUILD-DIR-NAME)
# ----------------------------
# Inputs:
#   - BUILD-DIR-NAME is `top-build -> build' and `top-src -> src'
#   - `$srcdir' is `top-build -> top-src'
#
# Ouputs:
# - `ac_builddir' is `.', for symmetry only.
# - `ac_top_builddir' is `build -> top_build'.
#      If not empty, has a trailing slash.
# - `ac_srcdir' is `build -> src'.
# - `ac_top_srcdir' is `build -> top-src'.
#
# and `ac_abs_builddir' etc., the absolute paths.
m4_define([_AC_SRCPATHS],
[ac_builddir=.

if test $1 != .; then
  ac_dir_suffix=/`echo $1 | sed 's,^\.[[\\/]],,'`
  # A "../" for each directory in $ac_dir_suffix.
  ac_top_builddir=`echo "$ac_dir_suffix" | sed 's,/[[^\\/]]*,../,g'`
else
  ac_dir_suffix= ac_top_builddir=
fi

case $srcdir in
  .)  # No --srcdir option.  We are building in place.
    ac_srcdir=.
    if test -z "$ac_top_builddir"; then
       ac_top_srcdir=.
    else
       ac_top_srcdir=`echo $ac_top_builddir | sed 's,/$,,'`
    fi ;;
  [[\\/]]* | ?:[[\\/]]* )  # Absolute path.
    ac_srcdir=$srcdir$ac_dir_suffix;
    ac_top_srcdir=$srcdir ;;
  *) # Relative path.
    ac_srcdir=$ac_top_builddir$srcdir$ac_dir_suffix
    ac_top_srcdir=$ac_top_builddir$srcdir ;;
esac

# Do not use `cd foo && pwd` to compute absolute paths, because
# the directories may not exist.
AS_SET_CATFILE([ac_abs_builddir],   [`pwd`],            [$1])
AS_SET_CATFILE([ac_abs_top_builddir],
                                    [$ac_abs_builddir], [${ac_top_builddir}.])
AS_SET_CATFILE([ac_abs_srcdir],     [$ac_abs_builddir], [$ac_srcdir])
AS_SET_CATFILE([ac_abs_top_srcdir], [$ac_abs_builddir], [$ac_top_srcdir])
])# _AC_SRCPATHS



## ------------------------------------- ##
## Ensuring the uniqueness of the tags.  ##
## ------------------------------------- ##

# AC_CONFIG_IF_MEMBER(DEST, LIST-NAME, ACTION-IF-TRUE, ACTION-IF-FALSE)
# ----------------------------------------------------------------
# If DEST is member of LIST-NAME, expand to ACTION-IF-TRUE, else
# ACTION-IF-FALSE.
#
# LIST is an AC_CONFIG list, i.e., a list of DEST[:SOURCE], separated
# with spaces.
#
# FIXME: This macro is badly designed, but I'm not guilty: m4 is.  There
# is just no way to simply compare two strings in m4, but to use pattern
# matching.  The big problem is then that the active characters should
# be quoted.  Currently `+*.' are quoted.
m4_define([AC_CONFIG_IF_MEMBER],
[m4_bmatch(m4_defn([$2]), [\(^\| \)]m4_re_escape([$1])[\([: ]\|$\)],
           [$3], [$4])])


# AC_FILE_DEPENDENCY_TRACE(DEST, SOURCE1, [SOURCE2...])
# -----------------------------------------------------
# This macro does nothing, it's a hook to be read with `autoconf --trace'.
# It announces DEST depends upon the SOURCE1 etc.
m4_define([AC_FILE_DEPENDENCY_TRACE], [])


# _AC_CONFIG_DEPENDENCY(DEST, [SOURCE1], [SOURCE2...])
# ----------------------------------------------------
# Be sure that a missing dependency is expressed as a dependency upon
# `DEST.in'.
m4_define([_AC_CONFIG_DEPENDENCY],
[m4_ifval([$2],
          [AC_FILE_DEPENDENCY_TRACE($@)],
          [AC_FILE_DEPENDENCY_TRACE([$1], [$1.in])])])


# _AC_CONFIG_DEPENDENCIES(DEST[:SOURCE1[:SOURCE2...]]...)
# -------------------------------------------------------
# Declare the DESTs depend upon their SOURCE1 etc.
m4_define([_AC_CONFIG_DEPENDENCIES],
[AC_FOREACH([AC_File], [$1],
  [_AC_CONFIG_DEPENDENCY(m4_bpatsubst(AC_File, [:], [,]))])dnl
])


# _AC_CONFIG_UNIQUE(DEST[:SOURCE]...)
# -----------------------------------
#
# Verify that there is no double definition of an output file
# (precisely, guarantees there is no common elements between
# CONFIG_HEADERS, CONFIG_FILES, CONFIG_LINKS, and CONFIG_SUBDIRS).
#
# Note that this macro does not check if the list $[1] itself
# contains doubles.
m4_define([_AC_CONFIG_UNIQUE],
[AC_FOREACH([AC_File], [$1],
[m4_pushdef([AC_Dest], m4_bpatsubst(AC_File, [:.*]))dnl
  AC_CONFIG_IF_MEMBER(AC_Dest, [AC_LIST_HEADERS],
     [AC_FATAL(`AC_Dest' [is already registered with AC_CONFIG_HEADERS.])])dnl
  AC_CONFIG_IF_MEMBER(AC_Dest, [AC_LIST_LINKS],
     [AC_FATAL(`AC_Dest' [is already registered with AC_CONFIG_LINKS.])])dnl
  AC_CONFIG_IF_MEMBER(AC_Dest, [_AC_LIST_SUBDIRS],
     [AC_FATAL(`AC_Dest' [is already registered with AC_CONFIG_SUBDIRS.])])dnl
  AC_CONFIG_IF_MEMBER(AC_Dest, [AC_LIST_COMMANDS],
     [AC_FATAL(`AC_Dest' [is already registered with AC_CONFIG_COMMANDS.])])dnl
  AC_CONFIG_IF_MEMBER(AC_Dest, [AC_LIST_FILES],
     [AC_FATAL(`AC_Dest' [is already registered with AC_CONFIG_FILES.])])dnl
m4_popdef([AC_Dest])])dnl
])



## ------------------------ ##
## Configuration commands.  ##
## ------------------------ ##


# _AC_CONFIG_COMMANDS_INIT([INIT-COMMANDS])
# -----------------------------------------
#
# Register INIT-COMMANDS as command pasted *unquoted* in
# `config.status'.  This is typically used to pass variables from
# `configure' to `config.status'.  Note that $[1] is not over quoted as
# was the case in AC_OUTPUT_COMMANDS.
m4_define([_AC_CONFIG_COMMANDS_INIT],
[m4_ifval([$1],
          [m4_append([_AC_OUTPUT_COMMANDS_INIT],
                     [$1
])])])

# Initialize.
m4_define([_AC_OUTPUT_COMMANDS_INIT])


# _AC_CONFIG_COMMAND(NAME, [COMMANDS])
# ------------------------------------
# See below.
m4_define([_AC_CONFIG_COMMAND],
[_AC_CONFIG_UNIQUE([$1])dnl
m4_append([AC_LIST_COMMANDS], [ $1])dnl
m4_ifval([$2],
[m4_append([AC_LIST_COMMANDS_COMMANDS],
[    ]m4_bpatsubst([$1], [:.*])[ ) $2 ;;
])])dnl
])

# AC_CONFIG_COMMANDS(NAME...,[COMMANDS], [INIT-CMDS])
# ---------------------------------------------------
#
# Specify additional commands to be run by config.status.  This
# commands must be associated with a NAME, which should be thought
# as the name of a file the COMMANDS create.
AC_DEFUN([AC_CONFIG_COMMANDS],
[AC_FOREACH([AC_Name], [$1], [_AC_CONFIG_COMMAND(m4_defn([AC_Name]), [$2])])dnl
_AC_CONFIG_COMMANDS_INIT([$3])dnl
ac_config_commands="$ac_config_commands $1"
])

# Initialize the lists.
m4_define([AC_LIST_COMMANDS])
m4_define([AC_LIST_COMMANDS_COMMANDS])


# AC_OUTPUT_COMMANDS(EXTRA-CMDS, INIT-CMDS)
# -----------------------------------------
#
# Add additional commands for AC_OUTPUT to put into config.status.
#
# This macro is an obsolete version of AC_CONFIG_COMMANDS.  The only
# difficulty in mapping AC_OUTPUT_COMMANDS to AC_CONFIG_COMMANDS is
# to give a unique key.  The scheme we have chosen is `default-1',
# `default-2' etc. for each call.
#
# Unfortunately this scheme is fragile: bad things might happen
# if you update an included file and configure.ac: you might have
# clashes :(  On the other hand, I'd like to avoid weird keys (e.g.,
# depending upon __file__ or the pid).
AU_DEFUN([AC_OUTPUT_COMMANDS],
[m4_define([_AC_OUTPUT_COMMANDS_CNT], m4_incr(_AC_OUTPUT_COMMANDS_CNT))dnl
dnl Double quoted since that was the case in the original macro.
AC_CONFIG_COMMANDS([default-]_AC_OUTPUT_COMMANDS_CNT, [[$1]], [[$2]])dnl
])

# Initialize.
AU_DEFUN([_AC_OUTPUT_COMMANDS_CNT], 0)


# AC_CONFIG_COMMANDS_PRE(CMDS)
# ----------------------------
# Commands to run right before config.status is created. Accumulates.
AC_DEFUN([AC_CONFIG_COMMANDS_PRE],
[m4_append([AC_OUTPUT_COMMANDS_PRE], [$1
])])


# AC_OUTPUT_COMMANDS_PRE
# ----------------------
# A *variable* in which we append all the actions that must be
# performed before *creating* config.status.  For a start, clean
# up all the LIBOBJ mess.
m4_define([AC_OUTPUT_COMMANDS_PRE],
[_AC_LIBOBJS_NORMALIZE()
])


# AC_CONFIG_COMMANDS_POST(CMDS)
# -----------------------------
# Commands to run after config.status was created.  Accumulates.
AC_DEFUN([AC_CONFIG_COMMANDS_POST],
[m4_append([AC_OUTPUT_COMMANDS_POST], [$1
])])

# Initialize.
m4_define([AC_OUTPUT_COMMANDS_POST])



# _AC_OUTPUT_COMMANDS
# -------------------
# This is a subroutine of AC_OUTPUT, in charge of issuing the code
# related to AC_CONFIG_COMMANDS.
#
# It has to send itself into $CONFIG_STATUS (eg, via here documents).
# Upon exit, no here document shall be opened.
m4_define([_AC_OUTPUT_COMMANDS],
[cat >>$CONFIG_STATUS <<\_ACEOF

#
# CONFIG_COMMANDS section.
#
for ac_file in : $CONFIG_COMMANDS; do test "x$ac_file" = x: && continue
  ac_dest=`echo "$ac_file" | sed 's,:.*,,'`
  ac_source=`echo "$ac_file" | sed 's,[[^:]]*:,,'`
  ac_dir=`AS_DIRNAME(["$ac_dest"])`
  AS_MKDIR_P(["$ac_dir"])
  _AC_SRCPATHS(["$ac_dir"])

  AC_MSG_NOTICE([executing $ac_dest commands])
dnl Some shells don't like empty case/esac
m4_ifset([AC_LIST_COMMANDS_COMMANDS],
[  case $ac_dest in
AC_LIST_COMMANDS_COMMANDS()dnl
  esac
])dnl
done
_ACEOF
])# _AC_OUTPUT_COMMANDS




## ----------------------- ##
## Configuration headers.  ##
## ----------------------- ##


# _AC_CONFIG_HEADER(HEADER, [COMMANDS])
# -------------------------------------
# See below.
m4_define([_AC_CONFIG_HEADER],
[_AC_CONFIG_UNIQUE([$1])dnl
m4_append([AC_LIST_HEADERS], [ $1])dnl
_AC_CONFIG_DEPENDENCIES([$1])dnl
dnl Register the commands
m4_ifval([$2],
[m4_append([AC_LIST_HEADERS_COMMANDS],
[    ]m4_bpatsubst([$1], [:.*])[ ) $2 ;;
])])dnl
])


# AC_CONFIG_HEADERS(HEADERS..., [COMMANDS], [INIT-CMDS])
# ------------------------------------------------------
# Specify that the HEADERS are to be created by instantiation of the
# AC_DEFINEs.  Associate the COMMANDS to the HEADERS.  This macro
# accumulates if called several times.
#
# The commands are stored in a growing string AC_LIST_HEADERS_COMMANDS
# which should be used like this:
#
#      case $ac_file in
#        AC_LIST_HEADERS_COMMANDS
#      esac
AC_DEFUN([AC_CONFIG_HEADERS],
[AC_FOREACH([AC_File], [$1], [_AC_CONFIG_HEADER(m4_defn([AC_File]), [$2])])dnl
_AC_CONFIG_COMMANDS_INIT([$3])dnl
ac_config_headers="$ac_config_headers m4_normalize([$1])"
])

# Initialize to empty.  It is much easier and uniform to have a config
# list expand to empty when undefined, instead of special casing when
# not defined (since in this case, AC_CONFIG_FOO expands to AC_CONFIG_FOO).
m4_define([AC_LIST_HEADERS])
m4_define([AC_LIST_HEADERS_COMMANDS])


# AC_CONFIG_HEADER(HEADER-TO-CREATE ...)
# --------------------------------------
# FIXME: Make it obsolete?
AC_DEFUN([AC_CONFIG_HEADER],
[AC_CONFIG_HEADERS([$1])])


# _AC_OUTPUT_HEADERS
# ------------------
#
# Output the code which instantiates the `config.h' files from their
# `config.h.in'.
#
# This is a subroutine of _AC_OUTPUT_CONFIG_STATUS.  It has to send
# itself into $CONFIG_STATUS (eg, via here documents).  Upon exit, no
# here document shall be opened.
#
#
# The code produced used to be extremely costly: there are was a
# single sed script (n lines) handling both `#define' templates,
# `#undef' templates with trailing space, and `#undef' templates
# without trailing spaces.  The full script was run on each of the m
# lines of `config.h.in', i.e., about n x m.
#
# Now there are two scripts: `conftest.defines' for the `#define'
# templates, and `conftest.undef' for the `#undef' templates.
#
# Optimization 1.  It is incredibly costly to run two `#undef'
# scripts, so just remove trailing spaces first.  Removes about a
# third of the cost.
#
# Optimization 2.  Since `#define' are rare and obsoleted,
# `conftest.defines' is built and run only if grep says there are
# `#define'.  Improves by at least a factor 2, since in addition we
# avoid the cost of *producing* the sed script.
#
# Optimization 3.  In each script, first check that the current input
# line is a template.  This avoids running the full sed script on
# empty lines and comments (divides the cost by about 3 since each
# template chunk is typically a comment, a template, an empty line).
#
# Optimization 4.  Once a substitution performed, since there can be
# only one per line, immediately restart the script on the next input
# line (using the `t' sed instruction).  Divides by about 2.
# *Note:* In the case of the AC_SUBST sed script (_AC_OUTPUT_FILES)
# this optimization cannot be applied as is, because there can be
# several substitutions per line.
#
#
# The result is about, hm, ... times blah... plus....  Ahem.  The
# result is about much faster.
m4_define([_AC_OUTPUT_HEADERS],
[cat >>$CONFIG_STATUS <<\_ACEOF

#
# CONFIG_HEADER section.
#

# These sed commands are passed to sed as "A NAME B NAME C VALUE D", where
# NAME is the cpp macro being defined and VALUE is the value it is being given.
#
# ac_d sets the value in "#define NAME VALUE" lines.
dnl Double quote for the `[ ]' and `define'.
[ac_dA='s,^\([   ]*\)#\([        ]*define[       ][      ]*\)'
ac_dB='[         ].*$,\1#\2'
ac_dC=' '
ac_dD=',;t'
# ac_u turns "#undef NAME" without trailing blanks into "#define NAME VALUE".
ac_uA='s,^\([    ]*\)#\([        ]*\)undef\([    ][      ]*\)'
ac_uB='$,\1#\2define\3'
ac_uC=' '
ac_uD=',;t']

for ac_file in : $CONFIG_HEADERS; do test "x$ac_file" = x: && continue
  # Support "outfile[:infile[:infile...]]", defaulting infile="outfile.in".
  case $ac_file in
  - | *:- | *:-:* ) # input from stdin
        cat >$tmp/stdin
        ac_file_in=`echo "$ac_file" | sed 's,[[^:]]*:,,'`
        ac_file=`echo "$ac_file" | sed 's,:.*,,'` ;;
  *:* ) ac_file_in=`echo "$ac_file" | sed 's,[[^:]]*:,,'`
        ac_file=`echo "$ac_file" | sed 's,:.*,,'` ;;
  * )   ac_file_in=$ac_file.in ;;
  esac

  test x"$ac_file" != x- && AC_MSG_NOTICE([creating $ac_file])

  # First look for the input files in the build tree, otherwise in the
  # src tree.
  ac_file_inputs=`IFS=:
    for f in $ac_file_in; do
      case $f in
      -) echo $tmp/stdin ;;
      [[\\/$]]*)
         # Absolute (can't be DOS-style, as IFS=:)
         test -f "$f" || AC_MSG_ERROR([cannot find input file: $f])
         # Do quote $f, to prevent DOS paths from being IFS'd.
         echo "$f";;
      *) # Relative
         if test -f "$f"; then
           # Build tree
           echo "$f"
         elif test -f "$srcdir/$f"; then
           # Source tree
           echo "$srcdir/$f"
         else
           # /dev/null tree
           AC_MSG_ERROR([cannot find input file: $f])
         fi;;
      esac
    done` || AS_EXIT([1])
  # Remove the trailing spaces.
  sed 's/[[      ]]*$//' $ac_file_inputs >$tmp/in

_ACEOF

# Transform confdefs.h into two sed scripts, `conftest.defines' and
# `conftest.undefs', that substitutes the proper values into
# config.h.in to produce config.h.  The first handles `#define'
# templates, and the second `#undef' templates.
# And first: Protect against being on the right side of a sed subst in
# config.status.  Protect against being in an unquoted here document
# in config.status.
rm -f conftest.defines conftest.undefs
# Using a here document instead of a string reduces the quoting nightmare.
# Putting comments in sed scripts is not portable.
#
# `end' is used to avoid that the second main sed command (meant for
# 0-ary CPP macros) applies to n-ary macro definitions.
# See the Autoconf documentation for `clear'.
cat >confdef2sed.sed <<\_ACEOF
dnl Double quote for `[ ]' and `define'.
[s/[\\&,]/\\&/g
s,[\\$`],\\&,g
t clear
: clear
s,^[     ]*#[    ]*define[       ][      ]*\([^  (][^    (]*\)\(([^)]*)\)[       ]*\(.*\)$,${ac_dA}\1${ac_dB}\1\2${ac_dC}\3${ac_dD},gp
t end
s,^[     ]*#[    ]*define[       ][      ]*\([^  ][^     ]*\)[   ]*\(.*\)$,${ac_dA}\1${ac_dB}\1${ac_dC}\2${ac_dD},gp
: end]
_ACEOF
# If some macros were called several times there might be several times
# the same #defines, which is useless.  Nevertheless, we may not want to
# sort them, since we want the *last* AC-DEFINE to be honored.
uniq confdefs.h | sed -n -f confdef2sed.sed >conftest.defines
sed 's/ac_d/ac_u/g' conftest.defines >conftest.undefs
rm -f confdef2sed.sed

# This sed command replaces #undef with comments.  This is necessary, for
# example, in the case of _POSIX_SOURCE, which is predefined and required
# on some systems where configure will not decide to define it.
cat >>conftest.undefs <<\_ACEOF
[s,^[    ]*#[    ]*undef[        ][      ]*[a-zA-Z_][a-zA-Z_0-9]*,/* & */,]
_ACEOF

# Break up conftest.defines because some shells have a limit on the size
# of here documents, and old seds have small limits too (100 cmds).
echo '  # Handle all the #define templates only if necessary.' >>$CONFIG_STATUS
echo '  if grep ["^[     ]*#[    ]*define"] $tmp/in >/dev/null; then' >>$CONFIG_STATUS
echo '  # If there are no defines, we may have an empty if/fi' >>$CONFIG_STATUS
echo '  :' >>$CONFIG_STATUS
rm -f conftest.tail
while grep . conftest.defines >/dev/null
do
  # Write a limited-size here document to $tmp/defines.sed.
  echo '  cat >$tmp/defines.sed <<CEOF' >>$CONFIG_STATUS
  # Speed up: don't consider the non `#define' lines.
  echo ['/^[     ]*#[    ]*define/!b'] >>$CONFIG_STATUS
  # Work around the forget-to-reset-the-flag bug.
  echo 't clr' >>$CONFIG_STATUS
  echo ': clr' >>$CONFIG_STATUS
  sed ${ac_max_here_lines}q conftest.defines >>$CONFIG_STATUS
  echo 'CEOF
  sed -f $tmp/defines.sed $tmp/in >$tmp/out
  rm -f $tmp/in
  mv $tmp/out $tmp/in
' >>$CONFIG_STATUS
  sed 1,${ac_max_here_lines}d conftest.defines >conftest.tail
  rm -f conftest.defines
  mv conftest.tail conftest.defines
done
rm -f conftest.defines
echo '  fi # grep' >>$CONFIG_STATUS
echo >>$CONFIG_STATUS

# Break up conftest.undefs because some shells have a limit on the size
# of here documents, and old seds have small limits too (100 cmds).
echo '  # Handle all the #undef templates' >>$CONFIG_STATUS
rm -f conftest.tail
while grep . conftest.undefs >/dev/null
do
  # Write a limited-size here document to $tmp/undefs.sed.
  echo '  cat >$tmp/undefs.sed <<CEOF' >>$CONFIG_STATUS
  # Speed up: don't consider the non `#undef'
  echo ['/^[     ]*#[    ]*undef/!b'] >>$CONFIG_STATUS
  # Work around the forget-to-reset-the-flag bug.
  echo 't clr' >>$CONFIG_STATUS
  echo ': clr' >>$CONFIG_STATUS
  sed ${ac_max_here_lines}q conftest.undefs >>$CONFIG_STATUS
  echo 'CEOF
  sed -f $tmp/undefs.sed $tmp/in >$tmp/out
  rm -f $tmp/in
  mv $tmp/out $tmp/in
' >>$CONFIG_STATUS
  sed 1,${ac_max_here_lines}d conftest.undefs >conftest.tail
  rm -f conftest.undefs
  mv conftest.tail conftest.undefs
done
rm -f conftest.undefs

dnl Now back to your regularly scheduled config.status.
cat >>$CONFIG_STATUS <<\_ACEOF
  # Let's still pretend it is `configure' which instantiates (i.e., don't
  # use $as_me), people would be surprised to read:
  #    /* config.h.  Generated by config.status.  */
  if test x"$ac_file" = x-; then
    echo "/* Generated by configure.  */" >$tmp/config.h
  else
    echo "/* $ac_file.  Generated by configure.  */" >$tmp/config.h
  fi
  cat $tmp/in >>$tmp/config.h
  rm -f $tmp/in
  if test x"$ac_file" != x-; then
    if diff $ac_file $tmp/config.h >/dev/null 2>&1; then
      AC_MSG_NOTICE([$ac_file is unchanged])
    else
      ac_dir=`AS_DIRNAME(["$ac_file"])`
      AS_MKDIR_P(["$ac_dir"])
      rm -f $ac_file
      mv $tmp/config.h $ac_file
    fi
  else
    cat $tmp/config.h
    rm -f $tmp/config.h
  fi
dnl If running for Automake, be ready to perform additional
dnl commands to set up the timestamp files.
m4_ifdef([_AC_AM_CONFIG_HEADER_HOOK],
         [_AC_AM_CONFIG_HEADER_HOOK([$ac_file])
])dnl
m4_ifset([AC_LIST_HEADERS_COMMANDS],
[  # Run the commands associated with the file.
  case $ac_file in
AC_LIST_HEADERS_COMMANDS()dnl
  esac
])dnl
done
_ACEOF
])# _AC_OUTPUT_HEADERS



## --------------------- ##
## Configuration links.  ##
## --------------------- ##


# _AC_CONFIG_LINK(DEST:SOURCE, [COMMANDS])
# ----------------------------------------
# See below.
m4_define([_AC_CONFIG_LINK],
[_AC_CONFIG_UNIQUE([$1])dnl
m4_append([AC_LIST_LINKS], [ $1])dnl
_AC_CONFIG_DEPENDENCIES([$1])dnl
m4_bmatch([$1], [^\.:\| \.:], [m4_fatal([$0: invalid destination: `.'])])dnl
dnl Register the commands
m4_ifval([$2],
[m4_append([AC_LIST_LINKS_COMMANDS],
[    ]m4_bpatsubst([$1], [:.*])[ ) $2 ;;
])])dnl
])

# AC_CONFIG_LINKS(DEST:SOURCE..., [COMMANDS], [INIT-CMDS])
# --------------------------------------------------------
# Specify that config.status should establish a (symbolic if possible)
# link from TOP_SRCDIR/SOURCE to TOP_SRCDIR/DEST.
# Reject DEST=., because it is makes it hard for ./config.status
# to guess the links to establish (`./config.status .').
AC_DEFUN([AC_CONFIG_LINKS],
[AC_FOREACH([AC_File], [$1], [_AC_CONFIG_LINK(m4_defn([AC_File]), [$2])])dnl
_AC_CONFIG_COMMANDS_INIT([$3])dnl
ac_config_links="$ac_config_links m4_normalize([$1])"
])


# Initialize the list.
m4_define([AC_LIST_LINKS])
m4_define([AC_LIST_LINKS_COMMANDS])


# AC_LINK_FILES(SOURCE..., DEST...)
# ---------------------------------
# Link each of the existing files SOURCE... to the corresponding
# link name in DEST...
#
# Unfortunately we can't provide a very good autoupdate service here,
# since in `AC_LINK_FILES($from, $to)' it is possible that `$from'
# and `$to' are actually lists.  It would then be completely wrong to
# replace it with `AC_CONFIG_LINKS($to:$from).  It is possible in the
# case of literal values though, but because I don't think there is any
# interest in creating config links with literal values, no special
# mechanism is implemented to handle them.
#
# _AC_LINK_CNT is used to be robust to multiple calls.
AU_DEFUN([AC_LINK_FILES],
[m4_if($#, 2, ,
       [m4_fatal([$0: incorrect number of arguments])])dnl
m4_define([_AC_LINK_FILES_CNT], m4_incr(_AC_LINK_FILES_CNT))dnl
ac_sources="$1"
ac_dests="$2"
while test -n "$ac_sources"; do
  set $ac_dests; ac_dest=$[1]; shift; ac_dests=$[*]
  set $ac_sources; ac_source=$[1]; shift; ac_sources=$[*]
  [ac_config_links_]_AC_LINK_FILES_CNT="$[ac_config_links_]_AC_LINK_FILES_CNT $ac_dest:$ac_source"
done
AC_CONFIG_LINKS($[ac_config_links_]_AC_LINK_FILES_CNT)dnl
],
[
  It is technically impossible to `autoupdate' cleanly from AC_LINK_FILES
  to AC_CONFIG_FILES.  `autoupdate' provides a functional but inelegant
  update, you should probably tune the result yourself.])# AC_LINK_FILES


# Initialize.
AU_DEFUN([_AC_LINK_FILES_CNT], 0)

# _AC_OUTPUT_LINKS
# ----------------
# This is a subroutine of AC_OUTPUT.
#
# It has to send itself into $CONFIG_STATUS (eg, via here documents).
# Upon exit, no here document shall be opened.
m4_define([_AC_OUTPUT_LINKS],
[cat >>$CONFIG_STATUS <<\_ACEOF

#
# CONFIG_LINKS section.
#

dnl Here we use : instead of .. because if AC_LINK_FILES was used
dnl with empty parameters (as in gettext.m4), then we obtain here
dnl `:', which we want to skip.  So let's keep a single exception: `:'.
for ac_file in : $CONFIG_LINKS; do test "x$ac_file" = x: && continue
  ac_dest=`echo "$ac_file" | sed 's,:.*,,'`
  ac_source=`echo "$ac_file" | sed 's,[[^:]]*:,,'`

  AC_MSG_NOTICE([linking $srcdir/$ac_source to $ac_dest])

  if test ! -r $srcdir/$ac_source; then
    AC_MSG_ERROR([$srcdir/$ac_source: file not found])
  fi
  rm -f $ac_dest

  # Make relative symlinks.
  ac_dest_dir=`AS_DIRNAME(["$ac_dest"])`
  AS_MKDIR_P(["$ac_dest_dir"])
  _AC_SRCPATHS(["$ac_dest_dir"])

  case $srcdir in
  [[\\/$]]* | ?:[[\\/]]* ) ac_rel_source=$srcdir/$ac_source ;;
      *) ac_rel_source=$ac_top_builddir$srcdir/$ac_source ;;
  esac

  # Try a symlink, then a hard link, then a copy.
  ln -s $ac_rel_source $ac_dest 2>/dev/null ||
    ln $srcdir/$ac_source $ac_dest 2>/dev/null ||
    cp -p $srcdir/$ac_source $ac_dest ||
    AC_MSG_ERROR([cannot link or copy $srcdir/$ac_source to $ac_dest])
m4_ifset([AC_LIST_LINKS_COMMANDS],
[  # Run the commands associated with the file.
  case $ac_file in
AC_LIST_LINKS_COMMANDS()dnl
  esac
])dnl
done
_ACEOF
])# _AC_OUTPUT_LINKS



## --------------------- ##
## Configuration files.  ##
## --------------------- ##


# _AC_CONFIG_FILE(FILE..., [COMMANDS])
# ------------------------------------
# See below.
m4_define([_AC_CONFIG_FILE],
[_AC_CONFIG_UNIQUE([$1])dnl
m4_append([AC_LIST_FILES], [ $1])dnl
_AC_CONFIG_DEPENDENCIES([$1])dnl
dnl Register the commands.
m4_ifval([$2],
[m4_append([AC_LIST_FILES_COMMANDS],
[    ]m4_bpatsubst([$1], [:.*])[ ) $2 ;;
])])dnl
])

# AC_CONFIG_FILES(FILE..., [COMMANDS], [INIT-CMDS])
# -------------------------------------------------
# Specify output files, as with AC_OUTPUT, i.e., files that are
# configured with AC_SUBST.  Associate the COMMANDS to each FILE,
# i.e., when config.status creates FILE, run COMMANDS afterwards.
#
# The commands are stored in a growing string AC_LIST_FILES_COMMANDS
# which should be used like this:
#
#      case $ac_file in
#        AC_LIST_FILES_COMMANDS
#      esac
AC_DEFUN([AC_CONFIG_FILES],
[AC_FOREACH([AC_File], [$1], [_AC_CONFIG_FILE(m4_defn([AC_File]), [$2])])dnl
_AC_CONFIG_COMMANDS_INIT([$3])dnl
ac_config_files="$ac_config_files m4_normalize([$1])"
])

# Initialize the lists.
m4_define([AC_LIST_FILES])
m4_define([AC_LIST_FILES_COMMANDS])



# _AC_OUTPUT_FILES
# ----------------
# Do the variable substitutions to create the Makefiles or whatever.
# This is a subroutine of AC_OUTPUT.
#
# It has to send itself into $CONFIG_STATUS (eg, via here documents).
# Upon exit, no here document shall be opened.
m4_define([_AC_OUTPUT_FILES],
[cat >>$CONFIG_STATUS <<_ACEOF

#
# CONFIG_FILES section.
#

# No need to generate the scripts if there are no CONFIG_FILES.
# This happens for instance when ./config.status config.h
if test -n "\$CONFIG_FILES"; then
  # Protect against being on the right side of a sed subst in config.status.
dnl Please, pay attention that this sed code depends a lot on the shape
dnl of the sed commands issued by AC_SUBST.  So if you change one, change
dnl the other too.
[  sed 's/,@/@@/; s/@,/@@/; s/,;t t\$/@;t t/; /@;t t\$/s/[\\\\&,]/\\\\&/g;
   s/@@/,@/; s/@@/@,/; s/@;t t\$/,;t t/' >\$tmp/subs.sed <<\\CEOF]
dnl These here document variables are unquoted when configure runs
dnl but quoted when config.status runs, so variables are expanded once.
dnl Insert the sed substitutions of variables.
m4_ifdef([_AC_SUBST_VARS],
         [AC_FOREACH([AC_Var], m4_defn([_AC_SUBST_VARS]),
[s,@AC_Var@,$AC_Var,;t t
])])dnl
m4_ifdef([_AC_SUBST_FILES],
         [AC_FOREACH([AC_Var], m4_defn([_AC_SUBST_FILES]),
[/@AC_Var@/r $AC_Var
s,@AC_Var@,,;t t
])])dnl
CEOF

_ACEOF

  cat >>$CONFIG_STATUS <<\_ACEOF
  # Split the substitutions into bite-sized pieces for seds with
  # small command number limits, like on Digital OSF/1 and HP-UX.
dnl One cannot portably go further than 100 commands because of HP-UX.
dnl Here, there are 2 cmd per line, and two cmd are added later.
  ac_max_sed_lines=48
  ac_sed_frag=1 # Number of current file.
  ac_beg=1 # First line for current file.
  ac_end=$ac_max_sed_lines # Line after last line for current file.
  ac_more_lines=:
  ac_sed_cmds=
  while $ac_more_lines; do
    if test $ac_beg -gt 1; then
      sed "1,${ac_beg}d; ${ac_end}q" $tmp/subs.sed >$tmp/subs.frag
    else
      sed "${ac_end}q" $tmp/subs.sed >$tmp/subs.frag
    fi
    if test ! -s $tmp/subs.frag; then
      ac_more_lines=false
    else
      # The purpose of the label and of the branching condition is to
      # speed up the sed processing (if there are no `@' at all, there
      # is no need to browse any of the substitutions).
      # These are the two extra sed commands mentioned above.
      (echo [':t
  /@[a-zA-Z_][a-zA-Z_0-9]*@/!b'] && cat $tmp/subs.frag) >$tmp/subs-$ac_sed_frag.sed
      if test -z "$ac_sed_cmds"; then
        ac_sed_cmds="sed -f $tmp/subs-$ac_sed_frag.sed"
      else
        ac_sed_cmds="$ac_sed_cmds | sed -f $tmp/subs-$ac_sed_frag.sed"
      fi
      ac_sed_frag=`expr $ac_sed_frag + 1`
      ac_beg=$ac_end
      ac_end=`expr $ac_end + $ac_max_sed_lines`
    fi
  done
  if test -z "$ac_sed_cmds"; then
    ac_sed_cmds=cat
  fi
fi # test -n "$CONFIG_FILES"

_ACEOF
cat >>$CONFIG_STATUS <<\_ACEOF
for ac_file in : $CONFIG_FILES; do test "x$ac_file" = x: && continue
  # Support "outfile[:infile[:infile...]]", defaulting infile="outfile.in".
  case $ac_file in
  - | *:- | *:-:* ) # input from stdin
        cat >$tmp/stdin
        ac_file_in=`echo "$ac_file" | sed 's,[[^:]]*:,,'`
        ac_file=`echo "$ac_file" | sed 's,:.*,,'` ;;
  *:* ) ac_file_in=`echo "$ac_file" | sed 's,[[^:]]*:,,'`
        ac_file=`echo "$ac_file" | sed 's,:.*,,'` ;;
  * )   ac_file_in=$ac_file.in ;;
  esac

  # Compute @srcdir@, @top_srcdir@, and @INSTALL@ for subdirectories.
  ac_dir=`AS_DIRNAME(["$ac_file"])`
  AS_MKDIR_P(["$ac_dir"])
  _AC_SRCPATHS(["$ac_dir"])

AC_PROVIDE_IFELSE([AC_PROG_INSTALL],
[  case $INSTALL in
  [[\\/$]]* | ?:[[\\/]]* ) ac_INSTALL=$INSTALL ;;
  *) ac_INSTALL=$ac_top_builddir$INSTALL ;;
  esac
])dnl

  # Let's still pretend it is `configure' which instantiates (i.e., don't
  # use $as_me), people would be surprised to read:
  #    /* config.h.  Generated by config.status.  */
  if test x"$ac_file" = x-; then
    configure_input=
  else
    configure_input="$ac_file.  "
  fi
  configure_input=$configure_input"Generated from `echo $ac_file_in |
                                     sed 's,.*/,,'` by configure."

  # First look for the input files in the build tree, otherwise in the
  # src tree.
  ac_file_inputs=`IFS=:
    for f in $ac_file_in; do
      case $f in
      -) echo $tmp/stdin ;;
      [[\\/$]]*)
         # Absolute (can't be DOS-style, as IFS=:)
         test -f "$f" || AC_MSG_ERROR([cannot find input file: $f])
         echo "$f";;
      *) # Relative
         if test -f "$f"; then
           # Build tree
           echo "$f"
         elif test -f "$srcdir/$f"; then
           # Source tree
           echo "$srcdir/$f"
         else
           # /dev/null tree
           AC_MSG_ERROR([cannot find input file: $f])
         fi;;
      esac
    done` || AS_EXIT([1])

  if test x"$ac_file" != x-; then
    AC_MSG_NOTICE([creating $ac_file])
    rm -f "$ac_file"
  fi
_ACEOF
cat >>$CONFIG_STATUS <<_ACEOF
dnl Neutralize VPATH when `$srcdir' = `.'.
  sed "$ac_vpsub
dnl Shell code in configure.ac might set extrasub.
dnl FIXME: do we really want to maintain this feature?
$extrasub
_ACEOF
cat >>$CONFIG_STATUS <<\_ACEOF
:t
[/@[a-zA-Z_][a-zA-Z_0-9]*@/!b]
s,@configure_input@,$configure_input,;t t
s,@srcdir@,$ac_srcdir,;t t
s,@abs_srcdir@,$ac_abs_srcdir,;t t
s,@top_srcdir@,$ac_top_srcdir,;t t
s,@abs_top_srcdir@,$ac_abs_top_srcdir,;t t
s,@builddir@,$ac_builddir,;t t
s,@abs_builddir@,$ac_abs_builddir,;t t
s,@top_builddir@,$ac_top_builddir,;t t
s,@abs_top_builddir@,$ac_abs_top_builddir,;t t
AC_PROVIDE_IFELSE([AC_PROG_INSTALL], [s,@INSTALL@,$ac_INSTALL,;t t
])dnl
dnl The parens around the eval prevent an "illegal io" in Ultrix sh.
" $ac_file_inputs | (eval "$ac_sed_cmds") >$tmp/out
  rm -f $tmp/stdin
dnl This would break Makefile dependencies.
dnl  if diff $ac_file $tmp/out >/dev/null 2>&1; then
dnl    echo "$ac_file is unchanged"
dnl   else
dnl     rm -f $ac_file
dnl    mv $tmp/out $ac_file
dnl  fi
  if test x"$ac_file" != x-; then
    mv $tmp/out $ac_file
  else
    cat $tmp/out
    rm -f $tmp/out
  fi

m4_ifset([AC_LIST_FILES_COMMANDS],
[  # Run the commands associated with the file.
  case $ac_file in
AC_LIST_FILES_COMMANDS()dnl
  esac
])dnl
done
_ACEOF
])# _AC_OUTPUT_FILES



## ----------------------- ##
## Configuration subdirs.  ##
## ----------------------- ##


# AC_CONFIG_SUBDIRS(DIR ...)
# --------------------------
# We define two variables:
# - ac_subdirs_all
#   is built in the `default' section, and should contain *all*
#   the arguments of AC_CONFIG_SUBDIRS.  It is used for --help=recursive.
#   It makes no sense for arguments which are sh variables.
# - subdirs
#   which is built at runtime, so some of these dirs might not be
#   included, if for instance the user refused a part of the tree.
#   This is used in _AC_OUTPUT_SUBDIRS.
# _AC_LIST_SUBDIRS is used only for _AC_CONFIG_UNIQUE.
AC_DEFUN([AC_CONFIG_SUBDIRS],
[_AC_CONFIG_UNIQUE([$1])dnl
AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT])dnl
m4_append([_AC_LIST_SUBDIRS], [ $1])dnl
AS_LITERAL_IF([$1], [],
              [AC_DIAGNOSE(syntax, [$0: you should use literals])])
m4_divert_text([DEFAULTS],
               [ac_subdirs_all="$ac_subdirs_all m4_normalize([$1])"])
AC_SUBST(subdirs, "$subdirs $1")dnl
])

# Initialize the list.
m4_define([_AC_LIST_SUBDIRS])


# _AC_OUTPUT_SUBDIRS
# ------------------
# This is a subroutine of AC_OUTPUT, but it does not go into
# config.status, rather, it is called after running config.status.
m4_define([_AC_OUTPUT_SUBDIRS],
[
#
# CONFIG_SUBDIRS section.
#
if test "$no_recursion" != yes; then

  # Remove --cache-file and --srcdir arguments so they do not pile up.
  ac_sub_configure_args=
  ac_prev=
  for ac_arg in $ac_configure_args; do
    if test -n "$ac_prev"; then
      ac_prev=
      continue
    fi
    case $ac_arg in
    -cache-file | --cache-file | --cache-fil | --cache-fi \
    | --cache-f | --cache- | --cache | --cach | --cac | --ca | --c)
      ac_prev=cache_file ;;
    -cache-file=* | --cache-file=* | --cache-fil=* | --cache-fi=* \
    | --cache-f=* | --cache-=* | --cache=* | --cach=* | --cac=* | --ca=* \
    | --c=*)
      ;;
    --config-cache | -C)
      ;;
    -srcdir | --srcdir | --srcdi | --srcd | --src | --sr)
      ac_prev=srcdir ;;
    -srcdir=* | --srcdir=* | --srcdi=* | --srcd=* | --src=* | --sr=*)
      ;;
    -prefix | --prefix | --prefi | --pref | --pre | --pr | --p)
      ac_prev=prefix ;;
    -prefix=* | --prefix=* | --prefi=* | --pref=* | --pre=* | --pr=* | --p=*)
      ;;
    *) ac_sub_configure_args="$ac_sub_configure_args $ac_arg" ;;
    esac
  done

  # Always prepend --prefix to ensure using the same prefix
  # in subdir configurations.
  ac_sub_configure_args="--prefix=$prefix $ac_sub_configure_args"

  ac_popdir=`pwd`
  for ac_dir in : $subdirs; do test "x$ac_dir" = x: && continue

    # Do not complain, so a configure script can configure whichever
    # parts of a large source tree are present.
    test -d $srcdir/$ac_dir || continue

    AC_MSG_NOTICE([configuring in $ac_dir])
    AS_MKDIR_P(["$ac_dir"])
    _AC_SRCPATHS(["$ac_dir"])

    cd $ac_dir

    # Check for guested configure; otherwise get Cygnus style configure.
    if test -f $ac_srcdir/configure.gnu; then
      ac_sub_configure="$SHELL '$ac_srcdir/configure.gnu'"
    elif test -f $ac_srcdir/configure; then
      ac_sub_configure="$SHELL '$ac_srcdir/configure'"
    elif test -f $ac_srcdir/configure.in; then
      ac_sub_configure=$ac_configure
    else
      AC_MSG_WARN([no configuration information is in $ac_dir])
      ac_sub_configure=
    fi

    # The recursion is here.
    if test -n "$ac_sub_configure"; then
      # Make the cache file name correct relative to the subdirectory.
      case $cache_file in
      [[\\/]]* | ?:[[\\/]]* ) ac_sub_cache_file=$cache_file ;;
      *) # Relative path.
        ac_sub_cache_file=$ac_top_builddir$cache_file ;;
      esac

      AC_MSG_NOTICE([running $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir])
      # The eval makes quoting arguments work.
      eval $ac_sub_configure $ac_sub_configure_args \
           --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir ||
        AC_MSG_ERROR([$ac_sub_configure failed for $ac_dir])
    fi

    cd "$ac_popdir"
  done
fi
])# _AC_OUTPUT_SUBDIRS




## -------------------------- ##
## Outputting config.status.  ##
## -------------------------- ##


# autoupdate::AC_OUTPUT([CONFIG_FILES...], [EXTRA-CMDS], [INIT-CMDS])
# -------------------------------------------------------------------
#
# If there are arguments given to AC_OUTPUT, dispatch them to the
# proper modern macros.
AU_DEFUN([AC_OUTPUT],
[m4_ifvaln([$1],
           [AC_CONFIG_FILES([$1])])dnl
m4_ifvaln([$2$3],
          [AC_CONFIG_COMMANDS(default, [[$2]], [[$3]])])dnl
[AC_OUTPUT]])


# AC_OUTPUT([CONFIG_FILES...], [EXTRA-CMDS], [INIT-CMDS])
# -------------------------------------------------------
# The big finish.
# Produce config.status, config.h, and links; and configure subdirs.
# The CONFIG_HEADERS are defined in the m4 variable AC_LIST_HEADERS.
# Pay special attention not to have too long here docs: some old
# shells die.  Unfortunately the limit is not known precisely...
m4_define([AC_OUTPUT],
[dnl Dispatch the extra arguments to their native macros.
m4_ifval([$1],
         [AC_CONFIG_FILES([$1])])dnl
m4_ifval([$2$3],
         [AC_CONFIG_COMMANDS(default, [$2], [$3])])dnl
m4_ifval([$1$2$3],
         [AC_DIAGNOSE([obsolete],
                      [$0 should be used without arguments.
You should run autoupdate.])])dnl
AC_CACHE_SAVE

test "x$prefix" = xNONE && prefix=$ac_default_prefix
# Let make expand exec_prefix.
test "x$exec_prefix" = xNONE && exec_prefix='${prefix}'

# VPATH may cause trouble with some makes, so we remove $(srcdir),
# ${srcdir} and @srcdir@ from VPATH if srcdir is ".", strip leading and
# trailing colons and then remove the whole line if VPATH becomes empty
# (actually we leave an empty line to preserve line numbers).
if test "x$srcdir" = x.; then
  ac_vpsub=['/^[         ]*VPATH[        ]*=/{
s/:*\$(srcdir):*/:/;
s/:*\${srcdir}:*/:/;
s/:*@srcdir@:*/:/;
s/^\([^=]*=[     ]*\):*/\1/;
s/:*$//;
s/^[^=]*=[       ]*$//;
}']
fi

m4_ifset([AC_LIST_HEADERS], [DEFS=-DHAVE_CONFIG_H], [AC_OUTPUT_MAKE_DEFS()])

dnl Commands to run before creating config.status.
AC_OUTPUT_COMMANDS_PRE()dnl

: ${CONFIG_STATUS=./config.status}
ac_clean_files_save=$ac_clean_files
ac_clean_files="$ac_clean_files $CONFIG_STATUS"
_AC_OUTPUT_CONFIG_STATUS()dnl
ac_clean_files=$ac_clean_files_save

dnl Commands to run after config.status was created
AC_OUTPUT_COMMANDS_POST()dnl

# configure is writing to config.log, and then calls config.status.
# config.status does its own redirection, appending to config.log.
# Unfortunately, on DOS this fails, as config.log is still kept open
# by configure, so config.status won't be able to write to it; its
# output is simply discarded.  So we exec the FD to /dev/null,
# effectively closing config.log, so it can be properly (re)opened and
# appended to by config.status.  When coming back to configure, we
# need to make the FD available again.
if test "$no_create" != yes; then
  ac_cs_success=:
  ac_config_status_args=
  test "$silent" = yes &&
    ac_config_status_args="$ac_config_status_args --quiet"
  exec AS_MESSAGE_LOG_FD>/dev/null
  $SHELL $CONFIG_STATUS $ac_config_status_args || ac_cs_success=false
  exec AS_MESSAGE_LOG_FD>>config.log
  # Use ||, not &&, to avoid exiting from the if with $? = 1, which
  # would make configure fail if this is the last instruction.
  $ac_cs_success || AS_EXIT([1])
fi
dnl config.status should not do recursion.
AC_PROVIDE_IFELSE([AC_CONFIG_SUBDIRS], [_AC_OUTPUT_SUBDIRS()])dnl
])# AC_OUTPUT


# _AC_OUTPUT_CONFIG_STATUS
# ------------------------
# Produce config.status.  Called by AC_OUTPUT.
# Pay special attention not to have too long here docs: some old
# shells die.  Unfortunately the limit is not known precisely...
m4_define([_AC_OUTPUT_CONFIG_STATUS],
[AC_MSG_NOTICE([creating $CONFIG_STATUS])
cat >$CONFIG_STATUS <<_ACEOF
#! $SHELL
# Generated by $as_me.
# Run this file to recreate the current configuration.
# Compiler output produced by configure, useful for debugging
# configure, is in config.log if it exists.

debug=false
ac_cs_recheck=false
ac_cs_silent=false
SHELL=\${CONFIG_SHELL-$SHELL}
_ACEOF

cat >>$CONFIG_STATUS <<\_ACEOF
AS_SHELL_SANITIZE
dnl Watch out, this is directly the initializations, do not use
dnl AS_PREPARE, otherwise you'd get it output in the initialization
dnl of configure, not config.status.
_AS_PREPARE
exec AS_MESSAGE_FD>&1

# Open the log real soon, to keep \$[0] and so on meaningful, and to
# report actual input values of CONFIG_FILES etc. instead of their
# values after options handling.  Logging --version etc. is OK.
exec AS_MESSAGE_LOG_FD>>config.log
{
  echo
  AS_BOX([Running $as_me.])
} >&AS_MESSAGE_LOG_FD
cat >&AS_MESSAGE_LOG_FD <<_CSEOF

This file was extended by m4_ifset([AC_PACKAGE_NAME], [AC_PACKAGE_NAME ])dnl
$as_me[]m4_ifset([AC_PACKAGE_VERSION], [ AC_PACKAGE_VERSION]), which was
generated by m4_PACKAGE_STRING.  Invocation command line was

  CONFIG_FILES    = $CONFIG_FILES
  CONFIG_HEADERS  = $CONFIG_HEADERS
  CONFIG_LINKS    = $CONFIG_LINKS
  CONFIG_COMMANDS = $CONFIG_COMMANDS
  $ $[0] $[@]

_CSEOF
echo "on `(hostname || uname -n) 2>/dev/null | sed 1q`" >&AS_MESSAGE_LOG_FD
echo >&AS_MESSAGE_LOG_FD
_ACEOF

# Files that config.status was made for.
if test -n "$ac_config_files"; then
  echo "config_files=\"$ac_config_files\"" >>$CONFIG_STATUS
fi

if test -n "$ac_config_headers"; then
  echo "config_headers=\"$ac_config_headers\"" >>$CONFIG_STATUS
fi

if test -n "$ac_config_links"; then
  echo "config_links=\"$ac_config_links\"" >>$CONFIG_STATUS
fi

if test -n "$ac_config_commands"; then
  echo "config_commands=\"$ac_config_commands\"" >>$CONFIG_STATUS
fi

cat >>$CONFIG_STATUS <<\_ACEOF

ac_cs_usage="\
\`$as_me' instantiates files from templates according to the
current configuration.

Usage: $[0] [[OPTIONS]] [[FILE]]...

  -h, --help       print this help, then exit
  -V, --version    print version number, then exit
  -q, --quiet      do not print progress messages
  -d, --debug      don't remove temporary files
      --recheck    update $as_me by reconfiguring in the same conditions
m4_ifset([AC_LIST_FILES],
[[  --file=FILE[:TEMPLATE]
                   instantiate the configuration file FILE
]])dnl
m4_ifset([AC_LIST_HEADERS],
[[  --header=FILE[:TEMPLATE]
                   instantiate the configuration header FILE
]])dnl

m4_ifset([AC_LIST_FILES],
[Configuration files:
$config_files

])dnl
m4_ifset([AC_LIST_HEADERS],
[Configuration headers:
$config_headers

])dnl
m4_ifset([AC_LIST_LINKS],
[Configuration links:
$config_links

])dnl
m4_ifset([AC_LIST_COMMANDS],
[Configuration commands:
$config_commands

])dnl
Report bugs to <bug-autoconf@gnu.org>."
_ACEOF

cat >>$CONFIG_STATUS <<_ACEOF
ac_cs_version="\\
m4_ifset([AC_PACKAGE_NAME], [AC_PACKAGE_NAME ])config.status[]dnl
m4_ifset([AC_PACKAGE_VERSION], [ AC_PACKAGE_VERSION])
configured by $[0], generated by m4_PACKAGE_STRING,
  with options \\"`echo "$ac_configure_args" | sed 's/[[\\""\`\$]]/\\\\&/g'`\\"

Copyright (C) 2003 Free Software Foundation, Inc.
This config.status script is free software; the Free Software Foundation
gives unlimited permission to copy, distribute and modify it."
srcdir=$srcdir
AC_PROVIDE_IFELSE([AC_PROG_INSTALL],
[dnl Leave those double quotes here: this $INSTALL is evaluated in a
dnl here document, which might result in `INSTALL=/bin/install -c'.
INSTALL="$INSTALL"
])dnl
_ACEOF

cat >>$CONFIG_STATUS <<\_ACEOF
# If no file are specified by the user, then we need to provide default
# value.  By we need to know if files were specified by the user.
ac_need_defaults=:
while test $[#] != 0
do
  case $[1] in
  --*=*)
    ac_option=`expr "x$[1]" : 'x\([[^=]]*\)='`
    ac_optarg=`expr "x$[1]" : 'x[[^=]]*=\(.*\)'`
    ac_shift=:
    ;;
  -*)
    ac_option=$[1]
    ac_optarg=$[2]
    ac_shift=shift
    ;;
  *) # This is not an option, so the user has probably given explicit
     # arguments.
     ac_option=$[1]
     ac_need_defaults=false;;
  esac

  case $ac_option in
  # Handling of the options.
_ACEOF
cat >>$CONFIG_STATUS <<\_ACEOF
  -recheck | --recheck | --rechec | --reche | --rech | --rec | --re | --r)
    ac_cs_recheck=: ;;
  --version | --vers* | -V )
    echo "$ac_cs_version"; exit 0 ;;
  --he | --h)
    # Conflict between --help and --header
    AC_MSG_ERROR([ambiguous option: $[1]
Try `$[0] --help' for more information.]);;
  --help | --hel | -h )
    echo "$ac_cs_usage"; exit 0 ;;
  --debug | --d* | -d )
    debug=: ;;
  --file | --fil | --fi | --f )
    $ac_shift
    CONFIG_FILES="$CONFIG_FILES $ac_optarg"
    ac_need_defaults=false;;
  --header | --heade | --head | --hea )
    $ac_shift
    CONFIG_HEADERS="$CONFIG_HEADERS $ac_optarg"
    ac_need_defaults=false;;
  -q | -quiet | --quiet | --quie | --qui | --qu | --q \
  | -silent | --silent | --silen | --sile | --sil | --si | --s)
    ac_cs_silent=: ;;

  # This is an error.
  -*) AC_MSG_ERROR([unrecognized option: $[1]
Try `$[0] --help' for more information.]) ;;

  *) ac_config_targets="$ac_config_targets $[1]" ;;

  esac
  shift
done

ac_configure_extra_args=

if $ac_cs_silent; then
  exec AS_MESSAGE_FD>/dev/null
  ac_configure_extra_args="$ac_configure_extra_args --silent"
fi

_ACEOF
cat >>$CONFIG_STATUS <<_ACEOF
if \$ac_cs_recheck; then
  echo "running $SHELL $[0] " $ac_configure_args \$ac_configure_extra_args " --no-create --no-recursion" >&AS_MESSAGE_FD
  exec $SHELL $[0] $ac_configure_args \$ac_configure_extra_args --no-create --no-recursion
fi

_ACEOF

dnl We output the INIT-CMDS first for obvious reasons :)
m4_ifset([_AC_OUTPUT_COMMANDS_INIT],
[cat >>$CONFIG_STATUS <<_ACEOF
#
# INIT-COMMANDS section.
#

_AC_OUTPUT_COMMANDS_INIT()
_ACEOF])


dnl Issue this section only if there were actually config files.
dnl This checks if one of AC_LIST_HEADERS, AC_LIST_FILES, AC_LIST_COMMANDS,
dnl or AC_LIST_LINKS is set.
m4_ifval(AC_LIST_HEADERS()AC_LIST_LINKS()AC_LIST_FILES()AC_LIST_COMMANDS(),
[
cat >>$CONFIG_STATUS <<\_ACEOF
for ac_config_target in $ac_config_targets
do
  case "$ac_config_target" in
  # Handling of arguments.
AC_FOREACH([AC_File], AC_LIST_FILES,
[  "m4_bpatsubst(AC_File, [:.*])" )dnl
 CONFIG_FILES="$CONFIG_FILES AC_File" ;;
])dnl
AC_FOREACH([AC_File], AC_LIST_LINKS,
[  "m4_bpatsubst(AC_File, [:.*])" )dnl
 CONFIG_LINKS="$CONFIG_LINKS AC_File" ;;
])dnl
AC_FOREACH([AC_File], AC_LIST_COMMANDS,
[  "m4_bpatsubst(AC_File, [:.*])" )dnl
 CONFIG_COMMANDS="$CONFIG_COMMANDS AC_File" ;;
])dnl
AC_FOREACH([AC_File], AC_LIST_HEADERS,
[  "m4_bpatsubst(AC_File, [:.*])" )dnl
 CONFIG_HEADERS="$CONFIG_HEADERS AC_File" ;;
])dnl
  *) AC_MSG_ERROR([invalid argument: $ac_config_target]);;
  esac
done

# If the user did not use the arguments to specify the items to instantiate,
# then the envvar interface is used.  Set only those that are not.
# We use the long form for the default assignment because of an extremely
# bizarre bug on SunOS 4.1.3.
if $ac_need_defaults; then
m4_ifset([AC_LIST_FILES],
[  test "${CONFIG_FILES+set}" = set || CONFIG_FILES=$config_files
])dnl
m4_ifset([AC_LIST_HEADERS],
[  test "${CONFIG_HEADERS+set}" = set || CONFIG_HEADERS=$config_headers
])dnl
m4_ifset([AC_LIST_LINKS],
[  test "${CONFIG_LINKS+set}" = set || CONFIG_LINKS=$config_links
])dnl
m4_ifset([AC_LIST_COMMANDS],
[  test "${CONFIG_COMMANDS+set}" = set || CONFIG_COMMANDS=$config_commands
])dnl
fi

# Have a temporary directory for convenience.  Make it in the build tree
# simply because there is no reason to put it here, and in addition,
# creating and moving files from /tmp can sometimes cause problems.
AS_TMPDIR([confstat], [.])

_ACEOF
])[]dnl m4_ifval

dnl The following four sections are in charge of their own here
dnl documenting into $CONFIG_STATUS.
m4_ifset([AC_LIST_FILES],    [_AC_OUTPUT_FILES()])dnl
m4_ifset([AC_LIST_HEADERS],  [_AC_OUTPUT_HEADERS()])dnl
m4_ifset([AC_LIST_LINKS],    [_AC_OUTPUT_LINKS()])dnl
m4_ifset([AC_LIST_COMMANDS], [_AC_OUTPUT_COMMANDS()])dnl

cat >>$CONFIG_STATUS <<\_ACEOF

AS_EXIT(0)
_ACEOF
chmod +x $CONFIG_STATUS
])# _AC_OUTPUT_CONFIG_STATUS


# AC_OUTPUT_MAKE_DEFS
# -------------------
# Set the DEFS variable to the -D options determined earlier.
# This is a subroutine of AC_OUTPUT.
# It is called inside configure, outside of config.status.
# Using a here document instead of a string reduces the quoting nightmare.
m4_define([AC_OUTPUT_MAKE_DEFS],
[[# Transform confdefs.h into DEFS.
# Protect against shell expansion while executing Makefile rules.
# Protect against Makefile macro expansion.
#
# If the first sed substitution is executed (which looks for macros that
# take arguments), then we branch to the quote section.  Otherwise,
# look for a macro that doesn't take arguments.
cat >confdef2opt.sed <<\_ACEOF
t clear
: clear
s,^[     ]*#[    ]*define[       ][      ]*\([^  (][^    (]*([^)]*)\)[   ]*\(.*\),-D\1=\2,g
t quote
s,^[     ]*#[    ]*define[       ][      ]*\([^  ][^     ]*\)[   ]*\(.*\),-D\1=\2,g
t quote
d
: quote
s,[      `~#$^&*(){}\\|;'"<>?],\\&,g
s,\[,\\&,g
s,\],\\&,g
s,\$,$$,g
p
_ACEOF
# We use echo to avoid assuming a particular line-breaking character.
# The extra dot is to prevent the shell from consuming trailing
# line-breaks from the sub-command output.  A line-break within
# single-quotes doesn't work because, if this script is created in a
# platform that uses two characters for line-breaks (e.g., DOS), tr
# would break.
ac_LF_and_DOT=`echo; echo .`
DEFS=`sed -n -f confdef2opt.sed confdefs.h | tr "$ac_LF_and_DOT" ' .'`
rm -f confdef2opt.sed
]])# AC_OUTPUT_MAKE_DEFS