/ltmain.sh

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# libtool (GNU libtool) 2.4.2
# Written by Gordon Matzigkeit <gord@gnu.ai.mit.edu>, 1996

# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005, 2006,
# 2007, 2008, 2009, 2010, 2011 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.

# GNU Libtool 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 of the License, or
# (at your option) any later version.
#
# As a special exception to the GNU General Public License,
# if you distribute this file as part of a program or library that
# is built using GNU Libtool, you may include this file under the
# same distribution terms that you use for the rest of that program.
#
# GNU Libtool 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 GNU Libtool; see the file COPYING.  If not, a copy
# can be downloaded from http://www.gnu.org/licenses/gpl.html,
# or obtained by writing to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

# Usage: $progname [OPTION]... [MODE-ARG]...
#
# Provide generalized library-building support services.
#
#       --config             show all configuration variables
#       --debug              enable verbose shell tracing
#   -n, --dry-run            display commands without modifying any files
#       --features           display basic configuration information and exit
#       --mode=MODE          use operation mode MODE
#       --preserve-dup-deps  don't remove duplicate dependency libraries
#       --quiet, --silent    don't print informational messages
#       --no-quiet, --no-silent
#                            print informational messages (default)
#       --no-warn            don't display warning messages
#       --tag=TAG            use configuration variables from tag TAG
#   -v, --verbose            print more informational messages than default
#       --no-verbose         don't print the extra informational messages
#       --version            print version information
#   -h, --help, --help-all   print short, long, or detailed help message
#
# MODE must be one of the following:
#
#         clean              remove files from the build directory
#         compile            compile a source file into a libtool object
#         execute            automatically set library path, then run a program
#         finish             complete the installation of libtool libraries
#         install            install libraries or executables
#         link               create a library or an executable
#         uninstall          remove libraries from an installed directory
#
# MODE-ARGS vary depending on the MODE.  When passed as first option,
# `--mode=MODE' may be abbreviated as `MODE' or a unique abbreviation of that.
# Try `$progname --help --mode=MODE' for a more detailed description of MODE.
#
# When reporting a bug, please describe a test case to reproduce it and
# include the following information:
#
#         host-triplet:	$host
#         shell:		$SHELL
#         compiler:		$LTCC
#         compiler flags:		$LTCFLAGS
#         linker:		$LD (gnu? $with_gnu_ld)
#         $progname:	(GNU libtool) 2.4.2
#         automake:	$automake_version
#         autoconf:	$autoconf_version
#
# Report bugs to <bug-libtool@gnu.org>.
# GNU libtool home page: <http://www.gnu.org/software/libtool/>.
# General help using GNU software: <http://www.gnu.org/gethelp/>.

PROGRAM=libtool
PACKAGE=libtool
VERSION=2.4.2
TIMESTAMP=""
package_revision=1.3337

# Be Bourne compatible
if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then
  emulate sh
  NULLCMD=:
  # Zsh 3.x and 4.x performs 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
BIN_SH=xpg4; export BIN_SH # for Tru64
DUALCASE=1; export DUALCASE # for MKS sh

# A function that is used when there is no print builtin or printf.
func_fallback_echo ()
{
  eval 'cat <<_LTECHO_EOF
$1
_LTECHO_EOF'
}

# NLS nuisances: We save the old values to restore during execute mode.
lt_user_locale=
lt_safe_locale=
for lt_var in LANG LANGUAGE LC_ALL LC_CTYPE LC_COLLATE LC_MESSAGES
do
  eval "if test \"\${$lt_var+set}\" = set; then
          save_$lt_var=\$$lt_var
          $lt_var=C
	  export $lt_var
	  lt_user_locale=\"$lt_var=\\\$save_\$lt_var; \$lt_user_locale\"
	  lt_safe_locale=\"$lt_var=C; \$lt_safe_locale\"
	fi"
done
LC_ALL=C
LANGUAGE=C
export LANGUAGE LC_ALL

$lt_unset CDPATH


# Work around backward compatibility issue on IRIX 6.5. On IRIX 6.4+, sh
# is ksh but when the shell is invoked as "sh" and the current value of
# the _XPG environment variable is not equal to 1 (one), the special
# positional parameter $0, within a function call, is the name of the
# function.
progpath="$0"



: ${CP="cp -f"}
test "${ECHO+set}" = set || ECHO=${as_echo-'printf %s\n'}
: ${MAKE="make"}
: ${MKDIR="mkdir"}
: ${MV="mv -f"}
: ${RM="rm -f"}
: ${SHELL="${CONFIG_SHELL-/bin/sh}"}
: ${Xsed="$SED -e 1s/^X//"}

# Global variables:
EXIT_SUCCESS=0
EXIT_FAILURE=1
EXIT_MISMATCH=63  # $? = 63 is used to indicate version mismatch to missing.
EXIT_SKIP=77	  # $? = 77 is used to indicate a skipped test to automake.

exit_status=$EXIT_SUCCESS

# Make sure IFS has a sensible default
lt_nl='
'
IFS=" 	$lt_nl"

dirname="s,/[^/]*$,,"
basename="s,^.*/,,"

# func_dirname file append nondir_replacement
# Compute the dirname of FILE.  If nonempty, add APPEND to the result,
# otherwise set result to NONDIR_REPLACEMENT.
func_dirname ()
{
    func_dirname_result=`$ECHO "${1}" | $SED "$dirname"`
    if test "X$func_dirname_result" = "X${1}"; then
      func_dirname_result="${3}"
    else
      func_dirname_result="$func_dirname_result${2}"
    fi
} # func_dirname may be replaced by extended shell implementation


# func_basename file
func_basename ()
{
    func_basename_result=`$ECHO "${1}" | $SED "$basename"`
} # func_basename may be replaced by extended shell implementation


# func_dirname_and_basename file append nondir_replacement
# perform func_basename and func_dirname in a single function
# call:
#   dirname:  Compute the dirname of FILE.  If nonempty,
#             add APPEND to the result, otherwise set result
#             to NONDIR_REPLACEMENT.
#             value returned in "$func_dirname_result"
#   basename: Compute filename of FILE.
#             value retuned in "$func_basename_result"
# Implementation must be kept synchronized with func_dirname
# and func_basename. For efficiency, we do not delegate to
# those functions but instead duplicate the functionality here.
func_dirname_and_basename ()
{
    # Extract subdirectory from the argument.
    func_dirname_result=`$ECHO "${1}" | $SED -e "$dirname"`
    if test "X$func_dirname_result" = "X${1}"; then
      func_dirname_result="${3}"
    else
      func_dirname_result="$func_dirname_result${2}"
    fi
    func_basename_result=`$ECHO "${1}" | $SED -e "$basename"`
} # func_dirname_and_basename may be replaced by extended shell implementation


# func_stripname prefix suffix name
# strip PREFIX and SUFFIX off of NAME.
# PREFIX and SUFFIX must not contain globbing or regex special
# characters, hashes, percent signs, but SUFFIX may contain a leading
# dot (in which case that matches only a dot).
# func_strip_suffix prefix name
func_stripname ()
{
    case ${2} in
      .*) func_stripname_result=`$ECHO "${3}" | $SED "s%^${1}%%; s%\\\\${2}\$%%"`;;
      *)  func_stripname_result=`$ECHO "${3}" | $SED "s%^${1}%%; s%${2}\$%%"`;;
    esac
} # func_stripname may be replaced by extended shell implementation


# These SED scripts presuppose an absolute path with a trailing slash.
pathcar='s,^/\([^/]*\).*$,\1,'
pathcdr='s,^/[^/]*,,'
removedotparts=':dotsl
		s@/\./@/@g
		t dotsl
		s,/\.$,/,'
collapseslashes='s@/\{1,\}@/@g'
finalslash='s,/*$,/,'

# func_normal_abspath PATH
# Remove doubled-up and trailing slashes, "." path components,
# and cancel out any ".." path components in PATH after making
# it an absolute path.
#             value returned in "$func_normal_abspath_result"
func_normal_abspath ()
{
  # Start from root dir and reassemble the path.
  func_normal_abspath_result=
  func_normal_abspath_tpath=$1
  func_normal_abspath_altnamespace=
  case $func_normal_abspath_tpath in
    "")
      # Empty path, that just means $cwd.
      func_stripname '' '/' "`pwd`"
      func_normal_abspath_result=$func_stripname_result
      return
    ;;
    # The next three entries are used to spot a run of precisely
    # two leading slashes without using negated character classes;
    # we take advantage of case's first-match behaviour.
    ///*)
      # Unusual form of absolute path, do nothing.
    ;;
    //*)
      # Not necessarily an ordinary path; POSIX reserves leading '//'
      # and for example Cygwin uses it to access remote file shares
      # over CIFS/SMB, so we conserve a leading double slash if found.
      func_normal_abspath_altnamespace=/
    ;;
    /*)
      # Absolute path, do nothing.
    ;;
    *)
      # Relative path, prepend $cwd.
      func_normal_abspath_tpath=`pwd`/$func_normal_abspath_tpath
    ;;
  esac
  # Cancel out all the simple stuff to save iterations.  We also want
  # the path to end with a slash for ease of parsing, so make sure
  # there is one (and only one) here.
  func_normal_abspath_tpath=`$ECHO "$func_normal_abspath_tpath" | $SED \
        -e "$removedotparts" -e "$collapseslashes" -e "$finalslash"`
  while :; do
    # Processed it all yet?
    if test "$func_normal_abspath_tpath" = / ; then
      # If we ascended to the root using ".." the result may be empty now.
      if test -z "$func_normal_abspath_result" ; then
        func_normal_abspath_result=/
      fi
      break
    fi
    func_normal_abspath_tcomponent=`$ECHO "$func_normal_abspath_tpath" | $SED \
        -e "$pathcar"`
    func_normal_abspath_tpath=`$ECHO "$func_normal_abspath_tpath" | $SED \
        -e "$pathcdr"`
    # Figure out what to do with it
    case $func_normal_abspath_tcomponent in
      "")
        # Trailing empty path component, ignore it.
      ;;
      ..)
        # Parent dir; strip last assembled component from result.
        func_dirname "$func_normal_abspath_result"
        func_normal_abspath_result=$func_dirname_result
      ;;
      *)
        # Actual path component, append it.
        func_normal_abspath_result=$func_normal_abspath_result/$func_normal_abspath_tcomponent
      ;;
    esac
  done
  # Restore leading double-slash if one was found on entry.
  func_normal_abspath_result=$func_normal_abspath_altnamespace$func_normal_abspath_result
}

# func_relative_path SRCDIR DSTDIR
# generates a relative path from SRCDIR to DSTDIR, with a trailing
# slash if non-empty, suitable for immediately appending a filename
# without needing to append a separator.
#             value returned in "$func_relative_path_result"
func_relative_path ()
{
  func_relative_path_result=
  func_normal_abspath "$1"
  func_relative_path_tlibdir=$func_normal_abspath_result
  func_normal_abspath "$2"
  func_relative_path_tbindir=$func_normal_abspath_result

  # Ascend the tree starting from libdir
  while :; do
    # check if we have found a prefix of bindir
    case $func_relative_path_tbindir in
      $func_relative_path_tlibdir)
        # found an exact match
        func_relative_path_tcancelled=
        break
        ;;
      $func_relative_path_tlibdir*)
        # found a matching prefix
        func_stripname "$func_relative_path_tlibdir" '' "$func_relative_path_tbindir"
        func_relative_path_tcancelled=$func_stripname_result
        if test -z "$func_relative_path_result"; then
          func_relative_path_result=.
        fi
        break
        ;;
      *)
        func_dirname $func_relative_path_tlibdir
        func_relative_path_tlibdir=${func_dirname_result}
        if test "x$func_relative_path_tlibdir" = x ; then
          # Have to descend all the way to the root!
          func_relative_path_result=../$func_relative_path_result
          func_relative_path_tcancelled=$func_relative_path_tbindir
          break
        fi
        func_relative_path_result=../$func_relative_path_result
        ;;
    esac
  done

  # Now calculate path; take care to avoid doubling-up slashes.
  func_stripname '' '/' "$func_relative_path_result"
  func_relative_path_result=$func_stripname_result
  func_stripname '/' '/' "$func_relative_path_tcancelled"
  if test "x$func_stripname_result" != x ; then
    func_relative_path_result=${func_relative_path_result}/${func_stripname_result}
  fi

  # Normalisation. If bindir is libdir, return empty string,
  # else relative path ending with a slash; either way, target
  # file name can be directly appended.
  if test ! -z "$func_relative_path_result"; then
    func_stripname './' '' "$func_relative_path_result/"
    func_relative_path_result=$func_stripname_result
  fi
}

# The name of this program:
func_dirname_and_basename "$progpath"
progname=$func_basename_result

# Make sure we have an absolute path for reexecution:
case $progpath in
  [\\/]*|[A-Za-z]:\\*) ;;
  *[\\/]*)
     progdir=$func_dirname_result
     progdir=`cd "$progdir" && pwd`
     progpath="$progdir/$progname"
     ;;
  *)
     save_IFS="$IFS"
     IFS=${PATH_SEPARATOR-:}
     for progdir in $PATH; do
       IFS="$save_IFS"
       test -x "$progdir/$progname" && break
     done
     IFS="$save_IFS"
     test -n "$progdir" || progdir=`pwd`
     progpath="$progdir/$progname"
     ;;
esac

# Sed substitution that helps us do robust quoting.  It backslashifies
# metacharacters that are still active within double-quoted strings.
Xsed="${SED}"' -e 1s/^X//'
sed_quote_subst='s/\([`"$\\]\)/\\\1/g'

# Same as above, but do not quote variable references.
double_quote_subst='s/\(["`\\]\)/\\\1/g'

# Sed substitution that turns a string into a regex matching for the
# string literally.
sed_make_literal_regex='s,[].[^$\\*\/],\\&,g'

# Sed substitution that converts a w32 file name or path
# which contains forward slashes, into one that contains
# (escaped) backslashes.  A very naive implementation.
lt_sed_naive_backslashify='s|\\\\*|\\|g;s|/|\\|g;s|\\|\\\\|g'

# Re-`\' parameter expansions in output of double_quote_subst that were
# `\'-ed in input to the same.  If an odd number of `\' preceded a '$'
# in input to double_quote_subst, that '$' was protected from expansion.
# Since each input `\' is now two `\'s, look for any number of runs of
# four `\'s followed by two `\'s and then a '$'.  `\' that '$'.
bs='\\'
bs2='\\\\'
bs4='\\\\\\\\'
dollar='\$'
sed_double_backslash="\
  s/$bs4/&\\
/g
  s/^$bs2$dollar/$bs&/
  s/\\([^$bs]\\)$bs2$dollar/\\1$bs2$bs$dollar/g
  s/\n//g"

# Standard options:
opt_dry_run=false
opt_help=false
opt_quiet=false
opt_verbose=false
opt_warning=:

# func_echo arg...
# Echo program name prefixed message, along with the current mode
# name if it has been set yet.
func_echo ()
{
    $ECHO "$progname: ${opt_mode+$opt_mode: }$*"
}

# func_verbose arg...
# Echo program name prefixed message in verbose mode only.
func_verbose ()
{
    $opt_verbose && func_echo ${1+"$@"}

    # A bug in bash halts the script if the last line of a function
    # fails when set -e is in force, so we need another command to
    # work around that:
    :
}

# func_echo_all arg...
# Invoke $ECHO with all args, space-separated.
func_echo_all ()
{
    $ECHO "$*"
}

# func_error arg...
# Echo program name prefixed message to standard error.
func_error ()
{
    $ECHO "$progname: ${opt_mode+$opt_mode: }"${1+"$@"} 1>&2
}

# func_warning arg...
# Echo program name prefixed warning message to standard error.
func_warning ()
{
    $opt_warning && $ECHO "$progname: ${opt_mode+$opt_mode: }warning: "${1+"$@"} 1>&2

    # bash bug again:
    :
}

# func_fatal_error arg...
# Echo program name prefixed message to standard error, and exit.
func_fatal_error ()
{
    func_error ${1+"$@"}
    exit $EXIT_FAILURE
}

# func_fatal_help arg...
# Echo program name prefixed message to standard error, followed by
# a help hint, and exit.
func_fatal_help ()
{
    func_error ${1+"$@"}
    func_fatal_error "$help"
}
help="Try \`$progname --help' for more information."  ## default


# func_grep expression filename
# Check whether EXPRESSION matches any line of FILENAME, without output.
func_grep ()
{
    $GREP "$1" "$2" >/dev/null 2>&1
}


# func_mkdir_p directory-path
# Make sure the entire path to DIRECTORY-PATH is available.
func_mkdir_p ()
{
    my_directory_path="$1"
    my_dir_list=

    if test -n "$my_directory_path" && test "$opt_dry_run" != ":"; then

      # Protect directory names starting with `-'
      case $my_directory_path in
        -*) my_directory_path="./$my_directory_path" ;;
      esac

      # While some portion of DIR does not yet exist...
      while test ! -d "$my_directory_path"; do
        # ...make a list in topmost first order.  Use a colon delimited
	# list incase some portion of path contains whitespace.
        my_dir_list="$my_directory_path:$my_dir_list"

        # If the last portion added has no slash in it, the list is done
        case $my_directory_path in */*) ;; *) break ;; esac

        # ...otherwise throw away the child directory and loop
        my_directory_path=`$ECHO "$my_directory_path" | $SED -e "$dirname"`
      done
      my_dir_list=`$ECHO "$my_dir_list" | $SED 's,:*$,,'`

      save_mkdir_p_IFS="$IFS"; IFS=':'
      for my_dir in $my_dir_list; do
	IFS="$save_mkdir_p_IFS"
        # mkdir can fail with a `File exist' error if two processes
        # try to create one of the directories concurrently.  Don't
        # stop in that case!
        $MKDIR "$my_dir" 2>/dev/null || :
      done
      IFS="$save_mkdir_p_IFS"

      # Bail out if we (or some other process) failed to create a directory.
      test -d "$my_directory_path" || \
        func_fatal_error "Failed to create \`$1'"
    fi
}


# func_mktempdir [string]
# Make a temporary directory that won't clash with other running
# libtool processes, and avoids race conditions if possible.  If
# given, STRING is the basename for that directory.
func_mktempdir ()
{
    my_template="${TMPDIR-/tmp}/${1-$progname}"

    if test "$opt_dry_run" = ":"; then
      # Return a directory name, but don't create it in dry-run mode
      my_tmpdir="${my_template}-$$"
    else

      # If mktemp works, use that first and foremost
      my_tmpdir=`mktemp -d "${my_template}-XXXXXXXX" 2>/dev/null`

      if test ! -d "$my_tmpdir"; then
        # Failing that, at least try and use $RANDOM to avoid a race
        my_tmpdir="${my_template}-${RANDOM-0}$$"

        save_mktempdir_umask=`umask`
        umask 0077
        $MKDIR "$my_tmpdir"
        umask $save_mktempdir_umask
      fi

      # If we're not in dry-run mode, bomb out on failure
      test -d "$my_tmpdir" || \
        func_fatal_error "cannot create temporary directory \`$my_tmpdir'"
    fi

    $ECHO "$my_tmpdir"
}


# func_quote_for_eval arg
# Aesthetically quote ARG to be evaled later.
# This function returns two values: FUNC_QUOTE_FOR_EVAL_RESULT
# is double-quoted, suitable for a subsequent eval, whereas
# FUNC_QUOTE_FOR_EVAL_UNQUOTED_RESULT has merely all characters
# which are still active within double quotes backslashified.
func_quote_for_eval ()
{
    case $1 in
      *[\\\`\"\$]*)
	func_quote_for_eval_unquoted_result=`$ECHO "$1" | $SED "$sed_quote_subst"` ;;
      *)
        func_quote_for_eval_unquoted_result="$1" ;;
    esac

    case $func_quote_for_eval_unquoted_result in
      # Double-quote args containing shell metacharacters to delay
      # word splitting, command substitution and and variable
      # expansion for a subsequent eval.
      # Many Bourne shells cannot handle close brackets correctly
      # in scan sets, so we specify it separately.
      *[\[\~\#\^\&\*\(\)\{\}\|\;\<\>\?\'\ \	]*|*]*|"")
        func_quote_for_eval_result="\"$func_quote_for_eval_unquoted_result\""
        ;;
      *)
        func_quote_for_eval_result="$func_quote_for_eval_unquoted_result"
    esac
}


# func_quote_for_expand arg
# Aesthetically quote ARG to be evaled later; same as above,
# but do not quote variable references.
func_quote_for_expand ()
{
    case $1 in
      *[\\\`\"]*)
	my_arg=`$ECHO "$1" | $SED \
	    -e "$double_quote_subst" -e "$sed_double_backslash"` ;;
      *)
        my_arg="$1" ;;
    esac

    case $my_arg in
      # Double-quote args containing shell metacharacters to delay
      # word splitting and command substitution for a subsequent eval.
      # Many Bourne shells cannot handle close brackets correctly
      # in scan sets, so we specify it separately.
      *[\[\~\#\^\&\*\(\)\{\}\|\;\<\>\?\'\ \	]*|*]*|"")
        my_arg="\"$my_arg\""
        ;;
    esac

    func_quote_for_expand_result="$my_arg"
}


# func_show_eval cmd [fail_exp]
# Unless opt_silent is true, then output CMD.  Then, if opt_dryrun is
# not true, evaluate CMD.  If the evaluation of CMD fails, and FAIL_EXP
# is given, then evaluate it.
func_show_eval ()
{
    my_cmd="$1"
    my_fail_exp="${2-:}"

    ${opt_silent-false} || {
      func_quote_for_expand "$my_cmd"
      eval "func_echo $func_quote_for_expand_result"
    }

    if ${opt_dry_run-false}; then :; else
      eval "$my_cmd"
      my_status=$?
      if test "$my_status" -eq 0; then :; else
	eval "(exit $my_status); $my_fail_exp"
      fi
    fi
}


# func_show_eval_locale cmd [fail_exp]
# Unless opt_silent is true, then output CMD.  Then, if opt_dryrun is
# not true, evaluate CMD.  If the evaluation of CMD fails, and FAIL_EXP
# is given, then evaluate it.  Use the saved locale for evaluation.
func_show_eval_locale ()
{
    my_cmd="$1"
    my_fail_exp="${2-:}"

    ${opt_silent-false} || {
      func_quote_for_expand "$my_cmd"
      eval "func_echo $func_quote_for_expand_result"
    }

    if ${opt_dry_run-false}; then :; else
      eval "$lt_user_locale
	    $my_cmd"
      my_status=$?
      eval "$lt_safe_locale"
      if test "$my_status" -eq 0; then :; else
	eval "(exit $my_status); $my_fail_exp"
      fi
    fi
}

# func_tr_sh
# Turn $1 into a string suitable for a shell variable name.
# Result is stored in $func_tr_sh_result.  All characters
# not in the set a-zA-Z0-9_ are replaced with '_'. Further,
# if $1 begins with a digit, a '_' is prepended as well.
func_tr_sh ()
{
  case $1 in
  [0-9]* | *[!a-zA-Z0-9_]*)
    func_tr_sh_result=`$ECHO "$1" | $SED 's/^\([0-9]\)/_\1/; s/[^a-zA-Z0-9_]/_/g'`
    ;;
  * )
    func_tr_sh_result=$1
    ;;
  esac
}


# func_version
# Echo version message to standard output and exit.
func_version ()
{
    $opt_debug

    $SED -n '/(C)/!b go
	:more
	/\./!{
	  N
	  s/\n# / /
	  b more
	}
	:go
	/^# '$PROGRAM' (GNU /,/# warranty; / {
        s/^# //
	s/^# *$//
        s/\((C)\)[ 0-9,-]*\( [1-9][0-9]*\)/\1\2/
        p
     }' < "$progpath"
     exit $?
}

# func_usage
# Echo short help message to standard output and exit.
func_usage ()
{
    $opt_debug

    $SED -n '/^# Usage:/,/^#  *.*--help/ {
        s/^# //
	s/^# *$//
	s/\$progname/'$progname'/
	p
    }' < "$progpath"
    echo
    $ECHO "run \`$progname --help | more' for full usage"
    exit $?
}

# func_help [NOEXIT]
# Echo long help message to standard output and exit,
# unless 'noexit' is passed as argument.
func_help ()
{
    $opt_debug

    $SED -n '/^# Usage:/,/# Report bugs to/ {
	:print
        s/^# //
	s/^# *$//
	s*\$progname*'$progname'*
	s*\$host*'"$host"'*
	s*\$SHELL*'"$SHELL"'*
	s*\$LTCC*'"$LTCC"'*
	s*\$LTCFLAGS*'"$LTCFLAGS"'*
	s*\$LD*'"$LD"'*
	s/\$with_gnu_ld/'"$with_gnu_ld"'/
	s/\$automake_version/'"`(${AUTOMAKE-automake} --version) 2>/dev/null |$SED 1q`"'/
	s/\$autoconf_version/'"`(${AUTOCONF-autoconf} --version) 2>/dev/null |$SED 1q`"'/
	p
	d
     }
     /^# .* home page:/b print
     /^# General help using/b print
     ' < "$progpath"
    ret=$?
    if test -z "$1"; then
      exit $ret
    fi
}

# func_missing_arg argname
# Echo program name prefixed message to standard error and set global
# exit_cmd.
func_missing_arg ()
{
    $opt_debug

    func_error "missing argument for $1."
    exit_cmd=exit
}


# func_split_short_opt shortopt
# Set func_split_short_opt_name and func_split_short_opt_arg shell
# variables after splitting SHORTOPT after the 2nd character.
func_split_short_opt ()
{
    my_sed_short_opt='1s/^\(..\).*$/\1/;q'
    my_sed_short_rest='1s/^..\(.*\)$/\1/;q'

    func_split_short_opt_name=`$ECHO "$1" | $SED "$my_sed_short_opt"`
    func_split_short_opt_arg=`$ECHO "$1" | $SED "$my_sed_short_rest"`
} # func_split_short_opt may be replaced by extended shell implementation


# func_split_long_opt longopt
# Set func_split_long_opt_name and func_split_long_opt_arg shell
# variables after splitting LONGOPT at the `=' sign.
func_split_long_opt ()
{
    my_sed_long_opt='1s/^\(--[^=]*\)=.*/\1/;q'
    my_sed_long_arg='1s/^--[^=]*=//'

    func_split_long_opt_name=`$ECHO "$1" | $SED "$my_sed_long_opt"`
    func_split_long_opt_arg=`$ECHO "$1" | $SED "$my_sed_long_arg"`
} # func_split_long_opt may be replaced by extended shell implementation

exit_cmd=:





magic="%%%MAGIC variable%%%"
magic_exe="%%%MAGIC EXE variable%%%"

# Global variables.
nonopt=
preserve_args=
lo2o="s/\\.lo\$/.${objext}/"
o2lo="s/\\.${objext}\$/.lo/"
extracted_archives=
extracted_serial=0

# If this variable is set in any of the actions, the command in it
# will be execed at the end.  This prevents here-documents from being
# left over by shells.
exec_cmd=

# func_append var value
# Append VALUE to the end of shell variable VAR.
func_append ()
{
    eval "${1}=\$${1}\${2}"
} # func_append may be replaced by extended shell implementation

# func_append_quoted var value
# Quote VALUE and append to the end of shell variable VAR, separated
# by a space.
func_append_quoted ()
{
    func_quote_for_eval "${2}"
    eval "${1}=\$${1}\\ \$func_quote_for_eval_result"
} # func_append_quoted may be replaced by extended shell implementation


# func_arith arithmetic-term...
func_arith ()
{
    func_arith_result=`expr "${@}"`
} # func_arith may be replaced by extended shell implementation


# func_len string
# STRING may not start with a hyphen.
func_len ()
{
    func_len_result=`expr "${1}" : ".*" 2>/dev/null || echo $max_cmd_len`
} # func_len may be replaced by extended shell implementation


# func_lo2o object
func_lo2o ()
{
    func_lo2o_result=`$ECHO "${1}" | $SED "$lo2o"`
} # func_lo2o may be replaced by extended shell implementation


# func_xform libobj-or-source
func_xform ()
{
    func_xform_result=`$ECHO "${1}" | $SED 's/\.[^.]*$/.lo/'`
} # func_xform may be replaced by extended shell implementation


# func_fatal_configuration arg...
# Echo program name prefixed message to standard error, followed by
# a configuration failure hint, and exit.
func_fatal_configuration ()
{
    func_error ${1+"$@"}
    func_error "See the $PACKAGE documentation for more information."
    func_fatal_error "Fatal configuration error."
}


# func_config
# Display the configuration for all the tags in this script.
func_config ()
{
    re_begincf='^# ### BEGIN LIBTOOL'
    re_endcf='^# ### END LIBTOOL'

    # Default configuration.
    $SED "1,/$re_begincf CONFIG/d;/$re_endcf CONFIG/,\$d" < "$progpath"

    # Now print the configurations for the tags.
    for tagname in $taglist; do
      $SED -n "/$re_begincf TAG CONFIG: $tagname\$/,/$re_endcf TAG CONFIG: $tagname\$/p" < "$progpath"
    done

    exit $?
}

# func_features
# Display the features supported by this script.
func_features ()
{
    echo "host: $host"
    if test "$build_libtool_libs" = yes; then
      echo "enable shared libraries"
    else
      echo "disable shared libraries"
    fi
    if test "$build_old_libs" = yes; then
      echo "enable static libraries"
    else
      echo "disable static libraries"
    fi

    exit $?
}

# func_enable_tag tagname
# Verify that TAGNAME is valid, and either flag an error and exit, or
# enable the TAGNAME tag.  We also add TAGNAME to the global $taglist
# variable here.
func_enable_tag ()
{
  # Global variable:
  tagname="$1"

  re_begincf="^# ### BEGIN LIBTOOL TAG CONFIG: $tagname\$"
  re_endcf="^# ### END LIBTOOL TAG CONFIG: $tagname\$"
  sed_extractcf="/$re_begincf/,/$re_endcf/p"

  # Validate tagname.
  case $tagname in
    *[!-_A-Za-z0-9,/]*)
      func_fatal_error "invalid tag name: $tagname"
      ;;
  esac

  # Don't test for the "default" C tag, as we know it's
  # there but not specially marked.
  case $tagname in
    CC) ;;
    *)
      if $GREP "$re_begincf" "$progpath" >/dev/null 2>&1; then
	taglist="$taglist $tagname"

	# Evaluate the configuration.  Be careful to quote the path
	# and the sed script, to avoid splitting on whitespace, but
	# also don't use non-portable quotes within backquotes within
	# quotes we have to do it in 2 steps:
	extractedcf=`$SED -n -e "$sed_extractcf" < "$progpath"`
	eval "$extractedcf"
      else
	func_error "ignoring unknown tag $tagname"
      fi
      ;;
  esac
}

# func_check_version_match
# Ensure that we are using m4 macros, and libtool script from the same
# release of libtool.
func_check_version_match ()
{
  if test "$package_revision" != "$macro_revision"; then
    if test "$VERSION" != "$macro_version"; then
      if test -z "$macro_version"; then
        cat >&2 <<_LT_EOF
$progname: Version mismatch error.  This is $PACKAGE $VERSION, but the
$progname: definition of this LT_INIT comes from an older release.
$progname: You should recreate aclocal.m4 with macros from $PACKAGE $VERSION
$progname: and run autoconf again.
_LT_EOF
      else
        cat >&2 <<_LT_EOF
$progname: Version mismatch error.  This is $PACKAGE $VERSION, but the
$progname: definition of this LT_INIT comes from $PACKAGE $macro_version.
$progname: You should recreate aclocal.m4 with macros from $PACKAGE $VERSION
$progname: and run autoconf again.
_LT_EOF
      fi
    else
      cat >&2 <<_LT_EOF
$progname: Version mismatch error.  This is $PACKAGE $VERSION, revision $package_revision,
$progname: but the definition of this LT_INIT comes from revision $macro_revision.
$progname: You should recreate aclocal.m4 with macros from revision $package_revision
$progname: of $PACKAGE $VERSION and run autoconf again.
_LT_EOF
    fi

    exit $EXIT_MISMATCH
  fi
}


# Shorthand for --mode=foo, only valid as the first argument
case $1 in
clean|clea|cle|cl)
  shift; set dummy --mode clean ${1+"$@"}; shift
  ;;
compile|compil|compi|comp|com|co|c)
  shift; set dummy --mode compile ${1+"$@"}; shift
  ;;
execute|execut|execu|exec|exe|ex|e)
  shift; set dummy --mode execute ${1+"$@"}; shift
  ;;
finish|finis|fini|fin|fi|f)
  shift; set dummy --mode finish ${1+"$@"}; shift
  ;;
install|instal|insta|inst|ins|in|i)
  shift; set dummy --mode install ${1+"$@"}; shift
  ;;
link|lin|li|l)
  shift; set dummy --mode link ${1+"$@"}; shift
  ;;
uninstall|uninstal|uninsta|uninst|unins|unin|uni|un|u)
  shift; set dummy --mode uninstall ${1+"$@"}; shift
  ;;
esac



# Option defaults:
opt_debug=:
opt_dry_run=false
opt_config=false
opt_preserve_dup_deps=false
opt_features=false
opt_finish=false
opt_help=false
opt_help_all=false
opt_silent=:
opt_warning=:
opt_verbose=:
opt_silent=false
opt_verbose=false


# Parse options once, thoroughly.  This comes as soon as possible in the
# script to make things like `--version' happen as quickly as we can.
{
  # this just eases exit handling
  while test $# -gt 0; do
    opt="$1"
    shift
    case $opt in
      --debug|-x)	opt_debug='set -x'
			func_echo "enabling shell trace mode"
			$opt_debug
			;;
      --dry-run|--dryrun|-n)
			opt_dry_run=:
			;;
      --config)
			opt_config=:
func_config
			;;
      --dlopen|-dlopen)
			optarg="$1"
			opt_dlopen="${opt_dlopen+$opt_dlopen
}$optarg"
			shift
			;;
      --preserve-dup-deps)
			opt_preserve_dup_deps=:
			;;
      --features)
			opt_features=:
func_features
			;;
      --finish)
			opt_finish=:
set dummy --mode finish ${1+"$@"}; shift
			;;
      --help)
			opt_help=:
			;;
      --help-all)
			opt_help_all=:
opt_help=': help-all'
			;;
      --mode)
			test $# = 0 && func_missing_arg $opt && break
			optarg="$1"
			opt_mode="$optarg"
case $optarg in
  # Valid mode arguments:
  clean|compile|execute|finish|install|link|relink|uninstall) ;;

  # Catch anything else as an error
  *) func_error "invalid argument for $opt"
     exit_cmd=exit
     break
     ;;
esac
			shift
			;;
      --no-silent|--no-quiet)
			opt_silent=false
func_append preserve_args " $opt"
			;;
      --no-warning|--no-warn)
			opt_warning=false
func_append preserve_args " $opt"
			;;
      --no-verbose)
			opt_verbose=false
func_append preserve_args " $opt"
			;;
      --silent|--quiet)
			opt_silent=:
func_append preserve_args " $opt"
        opt_verbose=false
			;;
      --verbose|-v)
			opt_verbose=:
func_append preserve_args " $opt"
opt_silent=false
			;;
      --tag)
			test $# = 0 && func_missing_arg $opt && break
			optarg="$1"
			opt_tag="$optarg"
func_append preserve_args " $opt $optarg"
func_enable_tag "$optarg"
			shift
			;;

      -\?|-h)		func_usage				;;
      --help)		func_help				;;
      --version)	func_version				;;

      # Separate optargs to long options:
      --*=*)
			func_split_long_opt "$opt"
			set dummy "$func_split_long_opt_name" "$func_split_long_opt_arg" ${1+"$@"}
			shift
			;;

      # Separate non-argument short options:
      -\?*|-h*|-n*|-v*)
			func_split_short_opt "$opt"
			set dummy "$func_split_short_opt_name" "-$func_split_short_opt_arg" ${1+"$@"}
			shift
			;;

      --)		break					;;
      -*)		func_fatal_help "unrecognized option \`$opt'" ;;
      *)		set dummy "$opt" ${1+"$@"};	shift; break  ;;
    esac
  done

  # Validate options:

  # save first non-option argument
  if test "$#" -gt 0; then
    nonopt="$opt"
    shift
  fi

  # preserve --debug
  test "$opt_debug" = : || func_append preserve_args " --debug"

  case $host in
    *cygwin* | *mingw* | *pw32* | *cegcc*)
      # don't eliminate duplications in $postdeps and $predeps
      opt_duplicate_compiler_generated_deps=:
      ;;
    *)
      opt_duplicate_compiler_generated_deps=$opt_preserve_dup_deps
      ;;
  esac

  $opt_help || {
    # Sanity checks first:
    func_check_version_match

    if test "$build_libtool_libs" != yes && test "$build_old_libs" != yes; then
      func_fatal_configuration "not configured to build any kind of library"
    fi

    # Darwin sucks
    eval std_shrext=\"$shrext_cmds\"

    # Only execute mode is allowed to have -dlopen flags.
    if test -n "$opt_dlopen" && test "$opt_mode" != execute; then
      func_error "unrecognized option \`-dlopen'"
      $ECHO "$help" 1>&2
      exit $EXIT_FAILURE
    fi

    # Change the help message to a mode-specific one.
    generic_help="$help"
    help="Try \`$progname --help --mode=$opt_mode' for more information."
  }


  # Bail if the options were screwed
  $exit_cmd $EXIT_FAILURE
}




## ----------- ##
##    Main.    ##
## ----------- ##

# func_lalib_p file
# True iff FILE is a libtool `.la' library or `.lo' object file.
# This function is only a basic sanity check; it will hardly flush out
# determined imposters.
func_lalib_p ()
{
    test -f "$1" &&
      $SED -e 4q "$1" 2>/dev/null \
        | $GREP "^# Generated by .*$PACKAGE" > /dev/null 2>&1
}

# func_lalib_unsafe_p file
# True iff FILE is a libtool `.la' library or `.lo' object file.
# This function implements the same check as func_lalib_p without
# resorting to external programs.  To this end, it redirects stdin and
# closes it afterwards, without saving the original file descriptor.
# As a safety measure, use it only where a negative result would be
# fatal anyway.  Works if `file' does not exist.
func_lalib_unsafe_p ()
{
    lalib_p=no
    if test -f "$1" && test -r "$1" && exec 5<&0 <"$1"; then
	for lalib_p_l in 1 2 3 4
	do
	    read lalib_p_line
	    case "$lalib_p_line" in
		\#\ Generated\ by\ *$PACKAGE* ) lalib_p=yes; break;;
	    esac
	done
	exec 0<&5 5<&-
    fi
    test "$lalib_p" = yes
}

# func_ltwrapper_script_p file
# True iff FILE is a libtool wrapper script
# This function is only a basic sanity check; it will hardly flush out
# determined imposters.
func_ltwrapper_script_p ()
{
    func_lalib_p "$1"
}

# func_ltwrapper_executable_p file
# True iff FILE is a libtool wrapper executable
# This function is only a basic sanity check; it will hardly flush out
# determined imposters.
func_ltwrapper_executable_p ()
{
    func_ltwrapper_exec_suffix=
    case $1 in
    *.exe) ;;
    *) func_ltwrapper_exec_suffix=.exe ;;
    esac
    $GREP "$magic_exe" "$1$func_ltwrapper_exec_suffix" >/dev/null 2>&1
}

# func_ltwrapper_scriptname file
# Assumes file is an ltwrapper_executable
# uses $file to determine the appropriate filename for a
# temporary ltwrapper_script.
func_ltwrapper_scriptname ()
{
    func_dirname_and_basename "$1" "" "."
    func_stripname '' '.exe' "$func_basename_result"
    func_ltwrapper_scriptname_result="$func_dirname_result/$objdir/${func_stripname_result}_ltshwrapper"
}

# func_ltwrapper_p file
# True iff FILE is a libtool wrapper script or wrapper executable
# This function is only a basic sanity check; it will hardly flush out
# determined imposters.
func_ltwrapper_p ()
{
    func_ltwrapper_script_p "$1" || func_ltwrapper_executable_p "$1"
}


# func_execute_cmds commands fail_cmd
# Execute tilde-delimited COMMANDS.
# If FAIL_CMD is given, eval that upon failure.
# FAIL_CMD may read-access the current command in variable CMD!
func_execute_cmds ()
{
    $opt_debug
    save_ifs=$IFS; IFS='~'
    for cmd in $1; do
      IFS=$save_ifs
      eval cmd=\"$cmd\"
      func_show_eval "$cmd" "${2-:}"
    done
    IFS=$save_ifs
}


# func_source file
# Source FILE, adding directory component if necessary.
# Note that it is not necessary on cygwin/mingw to append a dot to
# FILE even if both FILE and FILE.exe exist: automatic-append-.exe
# behavior happens only for exec(3), not for open(2)!  Also, sourcing
# `FILE.' does not work on cygwin managed mounts.
func_source ()
{
    $opt_debug
    case $1 in
    */* | *\\*)	. "$1" ;;
    *)		. "./$1" ;;
    esac
}


# func_resolve_sysroot PATH
# Replace a leading = in PATH with a sysroot.  Store the result into
# func_resolve_sysroot_result
func_resolve_sysroot ()
{
  func_resolve_sysroot_result=$1
  case $func_resolve_sysroot_result in
  =*)
    func_stripname '=' '' "$func_resolve_sysroot_result"
    func_resolve_sysroot_result=$lt_sysroot$func_stripname_result
    ;;
  esac
}

# func_replace_sysroot PATH
# If PATH begins with the sysroot, replace it with = and
# store the result into func_replace_sysroot_result.
func_replace_sysroot ()
{
  case "$lt_sysroot:$1" in
  ?*:"$lt_sysroot"*)
    func_stripname "$lt_sysroot" '' "$1"
    func_replace_sysroot_result="=$func_stripname_result"
    ;;
  *)
    # Including no sysroot.
    func_replace_sysroot_result=$1
    ;;
  esac
}

# func_infer_tag arg
# Infer tagged configuration to use if any are available and
# if one wasn't chosen via the "--tag" command line option.
# Only attempt this if the compiler in the base compile
# command doesn't match the default compiler.
# arg is usually of the form 'gcc ...'
func_infer_tag ()
{
    $opt_debug
    if test -n "$available_tags" && test -z "$tagname"; then
      CC_quoted=
      for arg in $CC; do
	func_append_quoted CC_quoted "$arg"
      done
      CC_expanded=`func_echo_all $CC`
      CC_quoted_expanded=`func_echo_all $CC_quoted`
      case $@ in
      # Blanks in the command may have been stripped by the calling shell,
      # but not from the CC environment variable when configure was run.
      " $CC "* | "$CC "* | " $CC_expanded "* | "$CC_expanded "* | \
      " $CC_quoted"* | "$CC_quoted "* | " $CC_quoted_expanded "* | "$CC_quoted_expanded "*) ;;
      # Blanks at the start of $base_compile will cause this to fail
      # if we don't check for them as well.
      *)
	for z in $available_tags; do
	  if $GREP "^# ### BEGIN LIBTOOL TAG CONFIG: $z$" < "$progpath" > /dev/null; then
	    # Evaluate the configuration.
	    eval "`${SED} -n -e '/^# ### BEGIN LIBTOOL TAG CONFIG: '$z'$/,/^# ### END LIBTOOL TAG CONFIG: '$z'$/p' < $progpath`"
	    CC_quoted=
	    for arg in $CC; do
	      # Double-quote args containing other shell metacharacters.
	      func_append_quoted CC_quoted "$arg"
	    done
	    CC_expanded=`func_echo_all $CC`
	    CC_quoted_expanded=`func_echo_all $CC_quoted`
	    case "$@ " in
	    " $CC "* | "$CC "* | " $CC_expanded "* | "$CC_expanded "* | \
	    " $CC_quoted"* | "$CC_quoted "* | " $CC_quoted_expanded "* | "$CC_quoted_expanded "*)
	      # The compiler in the base compile command matches
	      # the one in the tagged configuration.
	      # Assume this is the tagged configuration we want.
	      tagname=$z
	      break
	      ;;
	    esac
	  fi
	done
	# If $tagname still isn't set, then no tagged configuration
	# was found and let the user know that the "--tag" command
	# line option must be used.
	if test -z "$tagname"; then
	  func_echo "unable to infer tagged configuration"
	  func_fatal_error "specify a tag with \`--tag'"
#	else
#	  func_verbose "using $tagname tagged configuration"
	fi
	;;
      esac
    fi
}



# func_write_libtool_object output_name pic_name nonpic_name
# Create a libtool object file (analogous to a ".la" file),
# but don't create it if we're doing a dry run.
func_write_libtool_object ()
{
    write_libobj=${1}
    if test "$build_libtool_libs" = yes; then
      write_lobj=\'${2}\'
    else
      write_lobj=none
    fi

    if test "$build_old_libs" = yes; then
      write_oldobj=\'${3}\'
    else
      write_oldobj=none
    fi

    $opt_dry_run || {
      cat >${write_libobj}T <<EOF
# $write_libobj - a libtool object file
# Generated by $PROGRAM (GNU $PACKAGE$TIMESTAMP) $VERSION
#
# Please DO NOT delete this file!
# It is necessary for linking the library.

# Name of the PIC object.
pic_object=$write_lobj

# Name of the non-PIC object
non_pic_object=$write_oldobj

EOF
      $MV "${write_libobj}T" "${write_libobj}"
    }
}


##################################################
# FILE NAME AND PATH CONVERSION HELPER FUNCTIONS #
##################################################

# func_convert_core_file_wine_to_w32 ARG
# Helper function used by file name conversion functions when $build is *nix,
# and $host is mingw, cygwin, or some other w32 environment. Relies on a
# correctly configured wine environment available, with the winepath program
# in $build's $PATH.
#
# ARG is the $build file name to be converted to w32 format.
# Result is available in $func_convert_core_file_wine_to_w32_result, and will
# be empty on error (or when ARG is empty)
func_convert_core_file_wine_to_w32 ()
{
  $opt_debug
  func_convert_core_file_wine_to_w32_result="$1"
  if test -n "$1"; then
    # Unfortunately, winepath does not exit with a non-zero error code, so we
    # are forced to check the contents of stdout. On the other hand, if the
    # command is not found, the shell will set an exit code of 127 and print
    # *an error message* to stdout. So we must check for both error code of
    # zero AND non-empty stdout, which explains the odd construction:
    func_convert_core_file_wine_to_w32_tmp=`winepath -w "$1" 2>/dev/null`
    if test "$?" -eq 0 && test -n "${func_convert_core_file_wine_to_w32_tmp}"; then
      func_convert_core_file_wine_to_w32_result=`$ECHO "$func_convert_core_file_wine_to_w32_tmp" |
        $SED -e "$lt_sed_naive_backslashify"`
    else
      func_convert_core_file_wine_to_w32_result=
    fi
  fi
}
# end: func_convert_core_file_wine_to_w32


# func_convert_core_path_wine_to_w32 ARG
# Helper function used by path conversion functions when $build is *nix, and
# $host is mingw, cygwin, or some other w32 environment. Relies on a correctly
# configured wine environment available, with the winepath program in $build's
# $PATH. Assumes ARG has no leading or trailing path separator characters.
#
# ARG is path to be converted from $build format to win32.
# Result is available in $func_convert_core_path_wine_to_w32_result.
# Unconvertible file (directory) names in ARG are skipped; if no directory names
# are convertible, then the result may be empty.
func_convert_core_path_wine_to_w32 ()
{
  $opt_debug
  # unfortunately, winepath doesn't convert paths, only file names
  func_convert_core_path_wine_to_w32_result=""
  if test -n "$1"; then
    oldIFS=$IFS
    IFS=:
    for func_convert_core_path_wine_to_w32_f in $1; do
      IFS=$oldIFS
      func_convert_core_file_wine_to_w32 "$func_convert_core_path_wine_to_w32_f"
      if test -n "$func_convert_core_file_wine_to_w32_result" ; then
        if test -z "$func_convert_core_path_wine_to_w32_result"; then
          func_convert_core_path_wine_to_w32_result="$func_convert_core_file_wine_to_w32_result"
        else
          func_append func_convert_core_path_wine_to_w32_result ";$func_convert_core_file_wine_to_w32_result"
        fi
      fi
    done
    IFS=$oldIFS
  fi
}
# end: func_convert_core_path_wine_to_w32


# func_cygpath ARGS...
# Wrapper around calling the cygpath program via LT_CYGPATH. This is used when
# when (1) $build is *nix and Cygwin is hosted via a wine environment; or (2)
# $build is MSYS and $host is Cygwin, or (3) $build is Cygwin. In case (1) or
# (2), returns the Cygwin file name or path in func_cygpath_result (input
# file name or path is assumed to be in w32 format, as previously converted
# from $build's *nix or MSYS format). In case (3), returns the w32 file name
# or path in func_cygpath_result (input file name or path is assumed to be in
# Cygwin format). Returns an empty string on error.
#
# ARGS are passed to cygpath, with the last one being the file name or path to
# be converted.
#
# Specify the absolute *nix (or w32) name to cygpath in the LT_CYGPATH
# environment variable; do not put it in $PATH.
func_cygpath ()
{
  $opt_debug
  if test -n "$LT_CYGPATH" && test -f "$LT_CYGPATH"; then
    func_cygpath_result=`$LT_CYGPATH "$@" 2>/dev/null`
    if test "$?" -ne 0; then
      # on failure, ensure result is empty
      func_cygpath_result=
    fi
  else
    func_cygpath_result=
    func_error "LT_CYGPATH is empty or specifies non-existent file: \`$LT_CYGPATH'"
  fi
}
#end: func_cygpath


# func_convert_core_msys_to_w32 ARG
# Convert file name or path ARG from MSYS format to w32 format.  Return
# result in func_convert_core_msys_to_w32_result.
func_convert_core_msys_to_w32 ()
{
  $opt_debug
  # awkward: cmd appends spaces to result
  func_convert_core_msys_to_w32_result=`( cmd //c echo "$1" ) 2>/dev/null |
    $SED -e 's/[ ]*$//' -e "$lt_sed_naive_backslashify"`
}
#end: func_convert_core_msys_to_w32


# func_convert_file_check ARG1 ARG2
# Verify that ARG1 (a file name in $build format) was converted to $host
# format in ARG2. Otherwise, emit an error message, but continue (resetting
# func_to_host_file_result to ARG1).
func_convert_file_check ()
{
  $opt_debug
  if test -z "$2" && test -n "$1" ; then
    func_error "Could not determine host file name corresponding to"
    func_error "  \`$1'"
    func_error "Continuing, but uninstalled executables may not work."
    # Fallback:
    func_to_host_file_result="$1"
  fi
}
# end func_convert_file_check


# func_convert_path_check FROM_PATHSEP TO_PATHSEP FROM_PATH TO_PATH
# Verify that FROM_PATH (a path in $build format) was converted to $host
# format in TO_PATH. Otherwise, emit an error message, but continue, resetting
# func_to_host_file_result to a simplistic fallback value (see below).
func_convert_path_check ()
{
  $opt_debug
  if test -z "$4" && test -n "$3"; then
    func_error "Could not determine the host path corresponding to"
    func_error "  \`$3'"
    func_error "Continuing, but uninstalled executables may not work."
    # Fallback.  This is a deliberately simplistic "conversion" and
    # should not be "improved".  See libtool.info.
    if test "x$1" != "x$2"; then
      lt_replace_pathsep_chars="s|$1|$2|g"
      func_to_host_path_result=`echo "$3" |
        $SED -e "$lt_replace_pathsep_chars"`
    else
      func_to_host_path_result="$3"
    fi
  fi
}
# end func_convert_path_check


# func_convert_path_front_back_pathsep FRONTPAT BACKPAT REPL ORIG
# Modifies func_to_host_path_result by prepending REPL if ORIG matches FRONTPAT
# and appending REPL if ORIG matches BACKPAT.
func_convert_path_front_back_pathsep ()
{
  $opt_debug
  case $4 in
  $1 ) func_to_host_path_result="$3$func_to_host_path_result"
    ;;
  esac
  case $4 in
  $2 ) func_append func_to_host_path_result "$3"
    ;;
  esac
}
# end func_convert_path_front_back_pathsep


##################################################
# $build to $host FILE NAME CONVERSION FUNCTIONS #
##################################################
# invoked via `$to_host_file_cmd ARG'
#
# In each case, ARG is the path to be converted from $build to $host format.
# Result will be available in $func_to_host_file_result.


# func_to_host_file ARG
# Converts the file name ARG from $build format to $host format. Return result
# in func_to_host_file_result.
func_to_host_file ()
{
  $opt_debug
  $to_host_file_cmd "$1"
}
# end func_to_host_file


# func_to_tool_file ARG LAZY
# converts the file name ARG from $build format to toolchain format. Return
# result in func_to_tool_file_result.  If the conversion in use is listed
# in (the comma separated) LAZY, no conversion takes place.
func_to_tool_file ()
{
  $opt_debug
  case ,$2, in
    *,"$to_tool_file_cmd",*)
      func_to_tool_file_result=$1
      ;;
    *)
      $to_tool_f…

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