#! /bin/sh

# Guess values for system-dependent variables and create Makefiles.

# Generated by GNU Autoconf 2.65 for libpng 1.4.0.

#

# Report bugs to <png-mng-implement@lists.sourceforge.net>.

#

#

# Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,

# 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation,

# Inc.

#

#

# This configure script is free software; the Free Software Foundation

# gives unlimited permission to copy, distribute and modify it.

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

## M4sh Initialization. ##

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

# Be more Bourne compatible

DUALCASE=1; export DUALCASE # for MKS sh

if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then :

  emulate sh

  NULLCMD=:

  # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which

  # is contrary to our usage.  Disable this feature.

  alias -g '${1+"$@"}'='"$@"'

  setopt NO_GLOB_SUBST

else

  case `(set -o) 2>/dev/null` in #(

  *posix*) :

    set -o posix ;; #(

  *) :

     ;;

esac

fi

as_nl='

'

export as_nl

# Printing a long string crashes Solaris 7 /usr/bin/printf.

as_echo='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'

as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo

as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo$as_echo

# Prefer a ksh shell builtin over an external printf program on Solaris,

# but without wasting forks for bash or zsh.

if test -z "$BASH_VERSION$ZSH_VERSION" \

    && (test "X`print -r -- $as_echo`" = "X$as_echo") 2>/dev/null; then

  as_echo='print -r --'

  as_echo_n='print -rn --'

elif (test "X`printf %s $as_echo`" = "X$as_echo") 2>/dev/null; then

  as_echo='printf %s\n'

  as_echo_n='printf %s'

else

  if test "X`(/usr/ucb/echo -n -n $as_echo) 2>/dev/null`" = "X-n $as_echo"; then

    as_echo_body='eval /usr/ucb/echo -n "$1$as_nl"'

    as_echo_n='/usr/ucb/echo -n'

  else

    as_echo_body='eval expr "X$1" : "X\\(.*\\)"'

    as_echo_n_body='eval

      arg=$1;

      case $arg in #(

      *"$as_nl"*)

	expr "X$arg" : "X\\(.*\\)$as_nl";

	arg=`expr "X$arg" : ".*$as_nl\\(.*\\)"`;;

      esac;

      expr "X$arg" : "X\\(.*\\)" | tr -d "$as_nl"

    '

    export as_echo_n_body

    as_echo_n='sh -c $as_echo_n_body as_echo'

  fi

  export as_echo_body

  as_echo='sh -c $as_echo_body as_echo'

fi

# The user is always right.

if test "${PATH_SEPARATOR+set}" != set; then

  PATH_SEPARATOR=:

  (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 && {

    (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 ||

      PATH_SEPARATOR=';'

  }

fi

# IFS

# We need space, tab and new line, in precisely that order.  Quoting is

# there to prevent editors from complaining about space-tab.

# (If _AS_PATH_WALK were called with IFS unset, it would disable word

# splitting by setting IFS to empty value.)

IFS=" ""	$as_nl"

# Find who we are.  Look in the path if we contain no directory separator.

case $0 in #((

  *[\\/]* ) as_myself=$0 ;;

  *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR

for as_dir in $PATH

do

  IFS=$as_save_IFS

  test -z "$as_dir" && as_dir=.

    test -r "$as_dir/$0" && as_myself=$as_dir/$0 && break

  done

IFS=$as_save_IFS

     ;;

esac

# We did not find ourselves, most probably we were run as `sh COMMAND'

# in which case we are not to be found in the path.

if test "x$as_myself" = x; then

  as_myself=$0

fi

if test ! -f "$as_myself"; then

  $as_echo "$as_myself: error: cannot find myself; rerun with an absolute file name" >&2

  exit 1

fi

# Unset variables that we do not need and which cause bugs (e.g. in

# pre-3.0 UWIN ksh).  But do not cause bugs in bash 2.01; the "|| exit 1"

# suppresses any "Segmentation fault" message there.  '((' could

# trigger a bug in pdksh 5.2.14.

for as_var in BASH_ENV ENV MAIL MAILPATH

do eval test x\${$as_var+set} = xset \

  && ( (unset $as_var) || exit 1) >/dev/null 2>&1 && unset $as_var || :

done

PS1='$ '

PS2='> '

PS4='+ '

# NLS nuisances.

LC_ALL=C

export LC_ALL

LANGUAGE=C

export LANGUAGE

# CDPATH.

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

if test "x$CONFIG_SHELL" = x; then

  as_bourne_compatible="if test -n \"\${ZSH_VERSION+set}\" && (emulate sh) >/dev/null 2>&1; then :

  emulate sh

  NULLCMD=:

  # Pre-4.2 versions of Zsh do word splitting on \${1+\"\$@\"}, which

  # is contrary to our usage.  Disable this feature.

  alias -g '\${1+\"\$@\"}'='\"\$@\"'

  setopt NO_GLOB_SUBST

else

  case \`(set -o) 2>/dev/null\` in #(

  *posix*) :

    set -o posix ;; #(

  *) :

     ;;

esac

fi

"

  as_required="as_fn_return () { (exit \$1); }

as_fn_success () { as_fn_return 0; }

as_fn_failure () { as_fn_return 1; }

as_fn_ret_success () { return 0; }

as_fn_ret_failure () { return 1; }

exitcode=0

as_fn_success || { exitcode=1; echo as_fn_success failed.; }

as_fn_failure && { exitcode=1; echo as_fn_failure succeeded.; }

as_fn_ret_success || { exitcode=1; echo as_fn_ret_success failed.; }

as_fn_ret_failure && { exitcode=1; echo as_fn_ret_failure succeeded.; }

if ( set x; as_fn_ret_success y && test x = \"\$1\" ); then :

else

  exitcode=1; echo positional parameters were not saved.

fi

test x\$exitcode = x0 || exit 1"

  as_suggested="  as_lineno_1=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_1a=\$LINENO

  as_lineno_2=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_2a=\$LINENO

  eval 'test \"x\$as_lineno_1'\$as_run'\" != \"x\$as_lineno_2'\$as_run'\" &&

  test \"x\`expr \$as_lineno_1'\$as_run' + 1\`\" = \"x\$as_lineno_2'\$as_run'\"' || exit 1

test \$(( 1 + 1 )) = 2 || exit 1"

  if (eval "$as_required") 2>/dev/null; then :

  as_have_required=yes

else

  as_have_required=no

fi

  if test x$as_have_required = xyes && (eval "$as_suggested") 2>/dev/null; then :

else

  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR

as_found=false

for as_dir in /bin$PATH_SEPARATOR/usr/bin$PATH_SEPARATOR$PATH

do

  IFS=$as_save_IFS

  test -z "$as_dir" && as_dir=.

  as_found=:

  case $as_dir in #(

	 /*)

	   for as_base in sh bash ksh sh5; do

	     # Try only shells that exist, to save several forks.

	     as_shell=$as_dir/$as_base

	     if { test -f "$as_shell" || test -f "$as_shell.exe"; } &&

		    { $as_echo "$as_bourne_compatible""$as_required" | as_run=a "$as_shell"; } 2>/dev/null; then :

  CONFIG_SHELL=$as_shell as_have_required=yes

		   if { $as_echo "$as_bourne_compatible""$as_suggested" | as_run=a "$as_shell"; } 2>/dev/null; then :

  break 2

fi

fi

	   done;;

       esac

  as_found=false

done

$as_found || { if { test -f "$SHELL" || test -f "$SHELL.exe"; } &&

	      { $as_echo "$as_bourne_compatible""$as_required" | as_run=a "$SHELL"; } 2>/dev/null; then :

  CONFIG_SHELL=$SHELL as_have_required=yes

fi; }

IFS=$as_save_IFS

      if test "x$CONFIG_SHELL" != x; then :

  # We cannot yet assume a decent shell, so we have to provide a

	# neutralization value for shells without unset; and this also

	# works around shells that cannot unset nonexistent variables.

	BASH_ENV=/dev/null

	ENV=/dev/null

	(unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV

	export CONFIG_SHELL

	exec "$CONFIG_SHELL" "$as_myself" ${1+"$@"}

fi

    if test x$as_have_required = xno; then :

  $as_echo "$0: This script requires a shell more modern than all"

  $as_echo "$0: the shells that I found on your system."

  if test x${ZSH_VERSION+set} = xset ; then

    $as_echo "$0: In particular, zsh $ZSH_VERSION has bugs and should"

    $as_echo "$0: be upgraded to zsh 4.3.4 or later."

  else

    $as_echo "$0: Please tell bug-autoconf@gnu.org and

$0: png-mng-implement@lists.sourceforge.net about your

$0: system, including any error possibly output before this

$0: message. Then install a modern shell, or manually run

$0: the script under such a shell if you do have one."

  fi

  exit 1

fi

fi

fi

SHELL=${CONFIG_SHELL-/bin/sh}

export SHELL

# Unset more variables known to interfere with behavior of common tools.

CLICOLOR_FORCE= GREP_OPTIONS=

unset CLICOLOR_FORCE GREP_OPTIONS

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

## M4sh Shell Functions. ##

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

# as_fn_unset VAR

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

# Portably unset VAR.

as_fn_unset ()

{

  { eval $1=; unset $1;}

}

as_unset=as_fn_unset

# as_fn_set_status STATUS

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

# Set $? to STATUS, without forking.

as_fn_set_status ()

{

  return $1

} # as_fn_set_status

# as_fn_exit STATUS

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

# Exit the shell with STATUS, even in a "trap 0" or "set -e" context.

as_fn_exit ()

{

  set +e

  as_fn_set_status $1

  exit $1

} # as_fn_exit

# as_fn_mkdir_p

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

# Create "$as_dir" as a directory, including parents if necessary.

as_fn_mkdir_p ()

{

  case $as_dir in #(

  -*) as_dir=./$as_dir;;

  esac

  test -d "$as_dir" || eval $as_mkdir_p || {

    as_dirs=

    while :; do

      case $as_dir in #(

      *\'*) as_qdir=`$as_echo "$as_dir" | sed "s/'/'\\\\\\\\''/g"`;; #'(

      *) as_qdir=$as_dir;;

      esac

      as_dirs="'$as_qdir' $as_dirs"

      as_dir=`$as_dirname -- "$as_dir" ||

$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \

	 X"$as_dir" : 'X\(//\)[^/]' \| \

	 X"$as_dir" : 'X\(//\)$' \| \

	 X"$as_dir" : 'X\(/\)' \| . 2>/dev/null ||

$as_echo X"$as_dir" |

    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{

	    s//\1/

	    q

	  }

	  /^X\(\/\/\)[^/].*/{

	    s//\1/

	    q

	  }

	  /^X\(\/\/\)$/{

	    s//\1/

	    q

	  }

	  /^X\(\/\).*/{

	    s//\1/

	    q

	  }

	  s/.*/./; q'`

      test -d "$as_dir" && break

    done

    test -z "$as_dirs" || eval "mkdir $as_dirs"

  } || test -d "$as_dir" || as_fn_error "cannot create directory $as_dir"

} # as_fn_mkdir_p

# as_fn_append VAR VALUE

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

# Append the text in VALUE to the end of the definition contained in VAR. Take

# advantage of any shell optimizations that allow amortized linear growth over

# repeated appends, instead of the typical quadratic growth present in naive

# implementations.

if (eval "as_var=1; as_var+=2; test x\$as_var = x12") 2>/dev/null; then :

  eval 'as_fn_append ()

  {

    eval $1+=\$2

  }'

else

  as_fn_append ()

  {

    eval $1=\$$1\$2

  }

fi # as_fn_append

# as_fn_arith ARG...

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

# Perform arithmetic evaluation on the ARGs, and store the result in the

# global $as_val. Take advantage of shells that can avoid forks. The arguments

# must be portable across $(()) and expr.

if (eval "test \$(( 1 + 1 )) = 2") 2>/dev/null; then :

  eval 'as_fn_arith ()

  {

    as_val=$(( $* ))

  }'

else

  as_fn_arith ()

  {

    as_val=`expr "$@" || test $? -eq 1`

  }

fi # as_fn_arith

# as_fn_error ERROR [LINENO LOG_FD]

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

# Output "`basename $0`: error: ERROR" to stderr. If LINENO and LOG_FD are

# provided, also output the error to LOG_FD, referencing LINENO. Then exit the

# script with status $?, using 1 if that was 0.

as_fn_error ()

{

  as_status=$?; test $as_status -eq 0 && as_status=1

  if test "$3"; then

    as_lineno=${as_lineno-"$2"} as_lineno_stack=as_lineno_stack=$as_lineno_stack

    $as_echo "$as_me:${as_lineno-$LINENO}: error: $1" >&$3

  fi

  $as_echo "$as_me: error: $1" >&2

  as_fn_exit $as_status

} # as_fn_error

if expr a : '\(a\)' >/dev/null 2>&1 &&

   test "X`expr 00001 : '.*\(...\)'`" = X001; then

  as_expr=expr

else

  as_expr=false

fi

if (basename -- /) >/dev/null 2>&1 && test "X`basename -- / 2>&1`" = "X/"; then

  as_basename=basename

else

  as_basename=false

fi

if (as_dir=`dirname -- /` && test "X$as_dir" = X/) >/dev/null 2>&1; then

  as_dirname=dirname

else

  as_dirname=false

fi

as_me=`$as_basename -- "$0" ||

$as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \

	 X"$0" : 'X\(//\)$' \| \

	 X"$0" : 'X\(/\)' \| . 2>/dev/null ||

$as_echo X/"$0" |

    sed '/^.*\/\([^/][^/]*\)\/*$/{

	    s//\1/

	    q

	  }

	  /^X\/\(\/\/\)$/{

	    s//\1/

	    q

	  }

	  /^X\/\(\/\).*/{

	    s//\1/

	    q

	  }

	  s/.*/./; q'`

# Avoid depending upon Character Ranges.

as_cr_letters='abcdefghijklmnopqrstuvwxyz'

as_cr_LETTERS='ABCDEFGHIJKLMNOPQRSTUVWXYZ'

as_cr_Letters=$as_cr_letters$as_cr_LETTERS

as_cr_digits='0123456789'

as_cr_alnum=$as_cr_Letters$as_cr_digits

  as_lineno_1=$LINENO as_lineno_1a=$LINENO

  as_lineno_2=$LINENO as_lineno_2a=$LINENO

  eval 'test "x$as_lineno_1'$as_run'" != "x$as_lineno_2'$as_run'" &&

  test "x`expr $as_lineno_1'$as_run' + 1`" = "x$as_lineno_2'$as_run'"' || {

  # Blame Lee E. McMahon (1931-1989) for sed's syntax.  :-)

  sed -n '

    p

    /[$]LINENO/=

  ' <$as_myself |

    sed '

      s/[$]LINENO.*/&-/

      t lineno

      b

      :lineno

      N

      :loop

      s/[$]LINENO\([^'$as_cr_alnum'_].*\n\)\(.*\)/\2\1\2/

      t loop

      s/-\n.*//

    ' >$as_me.lineno &&

  chmod +x "$as_me.lineno" ||

    { $as_echo "$as_me: error: cannot create $as_me.lineno; rerun with a POSIX shell" >&2; as_fn_exit 1; }

  # Don't try to exec as it changes $[0], causing all sort of problems

  # (the dirname of $[0] is not the place where we might find the

  # original and so on.  Autoconf is especially sensitive to this).

  . "./$as_me.lineno"

  # Exit status is that of the last command.

  exit

}

ECHO_C= ECHO_N= ECHO_T=

case `echo -n x` in #(((((

-n*)

  case `echo 'xy\c'` in

  *c*) ECHO_T='	';;	# ECHO_T is single tab character.

  xy)  ECHO_C='\c';;

  *)   echo `echo ksh88 bug on AIX 6.1` > /dev/null

       ECHO_T='	';;

  esac;;

*)

  ECHO_N='-n';;

esac

rm -f conf$$ conf$$.exe conf$$.file

if test -d conf$$.dir; then

  rm -f conf$$.dir/conf$$.file

else

  rm -f conf$$.dir

  mkdir conf$$.dir 2>/dev/null

fi

if (echo >conf$$.file) 2>/dev/null; then

  if ln -s conf$$.file conf$$ 2>/dev/null; then

    as_ln_s='ln -s'

    # ... but there are two gotchas:

    # 1) On MSYS, both `ln -s file dir' and `ln file dir' fail.

    # 2) DJGPP < 2.04 has no symlinks; `ln -s' creates a wrapper executable.

    # In both cases, we have to default to `cp -p'.

    ln -s conf$$.file conf$$.dir 2>/dev/null && test ! -f conf$$.exe ||

      as_ln_s='cp -p'

  elif ln conf$$.file conf$$ 2>/dev/null; then

    as_ln_s=ln

  else

    as_ln_s='cp -p'

  fi

else

  as_ln_s='cp -p'

fi

rm -f conf$$ conf$$.exe conf$$.dir/conf$$.file conf$$.file

rmdir conf$$.dir 2>/dev/null

if mkdir -p . 2>/dev/null; then