ltmain.sh 316 KB
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#! /bin/sh
## DO NOT EDIT - This file generated from ./build-aux/ltmain.in
##               by inline-source v2014-01-03.01

# libtool (GNU libtool) 2.4.6
# Provide generalized library-building support services.
# Written by Gordon Matzigkeit <gord@gnu.ai.mit.edu>, 1996

# Copyright (C) 1996-2015 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
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# 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.
#
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# 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
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# 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
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# along with this program.  If not, see <http://www.gnu.org/licenses/>.
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PROGRAM=libtool
PACKAGE=libtool
VERSION=2.4.6
package_revision=2.4.6
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## ------ ##
## Usage. ##
## ------ ##
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# Run './libtool --help' for help with using this script from the
# command line.
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## ------------------------------- ##
## User overridable command paths. ##
## ------------------------------- ##
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# After configure completes, it has a better idea of some of the
# shell tools we need than the defaults used by the functions shared
# with bootstrap, so set those here where they can still be over-
# ridden by the user, but otherwise take precedence.
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: ${AUTOCONF="autoconf"}
: ${AUTOMAKE="automake"}
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## -------------------------- ##
## Source external libraries. ##
## -------------------------- ##
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# Much of our low-level functionality needs to be sourced from external
# libraries, which are installed to $pkgauxdir.
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# Set a version string for this script.
scriptversion=2015-01-20.17; # UTC
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# General shell script boiler plate, and helper functions.
# Written by Gary V. Vaughan, 2004
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# Copyright (C) 2004-2015 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.
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# 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 3 of the License, or
# (at your option) any later version.
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# 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.
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# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNES FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
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# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# Please report bugs or propose patches to gary@gnu.org.
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## ------ ##
## Usage. ##
## ------ ##
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# Evaluate this file near the top of your script to gain access to
# the functions and variables defined here:
#
#   . `echo "$0" | ${SED-sed} 's|[^/]*$||'`/build-aux/funclib.sh
#
# If you need to override any of the default environment variable
# settings, do that before evaluating this file.
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## -------------------- ##
## Shell normalisation. ##
## -------------------- ##
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# Some shells need a little help to be as Bourne compatible as possible.
# Before doing anything else, make sure all that help has been provided!
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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 '${1+"$@"}'='"$@"'
  setopt NO_GLOB_SUBST
else
  case `(set -o) 2>/dev/null` in *posix*) set -o posix ;; esac
fi
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# NLS nuisances: We save the old values in case they are required later.
_G_user_locale=
_G_safe_locale=
for _G_var in LANG LANGUAGE LC_ALL LC_CTYPE LC_COLLATE LC_MESSAGES
do
  eval "if test set = \"\${$_G_var+set}\"; then
          save_$_G_var=\$$_G_var
          $_G_var=C
	  export $_G_var
	  _G_user_locale=\"$_G_var=\\\$save_\$_G_var; \$_G_user_locale\"
	  _G_safe_locale=\"$_G_var=C; \$_G_safe_locale\"
	fi"
done
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# CDPATH.
(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
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# Make sure IFS has a sensible default
sp=' '
nl='
'
IFS="$sp	$nl"

# There are apparently some retarded systems that use ';' as a PATH separator!
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
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## ------------------------- ##
## Locate command utilities. ##
## ------------------------- ##
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# func_executable_p FILE
# ----------------------
# Check that FILE is an executable regular file.
func_executable_p ()
{
    test -f "$1" && test -x "$1"
}
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# func_path_progs PROGS_LIST CHECK_FUNC [PATH]
# --------------------------------------------
# Search for either a program that responds to --version with output
# containing "GNU", or else returned by CHECK_FUNC otherwise, by
# trying all the directories in PATH with each of the elements of
# PROGS_LIST.
#
# CHECK_FUNC should accept the path to a candidate program, and
# set $func_check_prog_result if it truncates its output less than
# $_G_path_prog_max characters.
func_path_progs ()
{
    _G_progs_list=$1
    _G_check_func=$2
    _G_PATH=${3-"$PATH"}

    _G_path_prog_max=0
    _G_path_prog_found=false
    _G_save_IFS=$IFS; IFS=${PATH_SEPARATOR-:}
    for _G_dir in $_G_PATH; do
      IFS=$_G_save_IFS
      test -z "$_G_dir" && _G_dir=.
      for _G_prog_name in $_G_progs_list; do
        for _exeext in '' .EXE; do
          _G_path_prog=$_G_dir/$_G_prog_name$_exeext
          func_executable_p "$_G_path_prog" || continue
          case `"$_G_path_prog" --version 2>&1` in
            *GNU*) func_path_progs_result=$_G_path_prog _G_path_prog_found=: ;;
            *)     $_G_check_func $_G_path_prog
		   func_path_progs_result=$func_check_prog_result
		   ;;
          esac
          $_G_path_prog_found && break 3
        done
      done
    done
    IFS=$_G_save_IFS
    test -z "$func_path_progs_result" && {
      echo "no acceptable sed could be found in \$PATH" >&2
      exit 1
    }
}
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# We want to be able to use the functions in this file before configure
# has figured out where the best binaries are kept, which means we have
# to search for them ourselves - except when the results are already set
# where we skip the searches.
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# Unless the user overrides by setting SED, search the path for either GNU
# sed, or the sed that truncates its output the least.
test -z "$SED" && {
  _G_sed_script=s/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb/
  for _G_i in 1 2 3 4 5 6 7; do
    _G_sed_script=$_G_sed_script$nl$_G_sed_script
  done
  echo "$_G_sed_script" 2>/dev/null | sed 99q >conftest.sed
  _G_sed_script=
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  func_check_prog_sed ()
  {
    _G_path_prog=$1
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    _G_count=0
    printf 0123456789 >conftest.in
    while :
    do
      cat conftest.in conftest.in >conftest.tmp
      mv conftest.tmp conftest.in
      cp conftest.in conftest.nl
      echo '' >> conftest.nl
      "$_G_path_prog" -f conftest.sed <conftest.nl >conftest.out 2>/dev/null || break
      diff conftest.out conftest.nl >/dev/null 2>&1 || break
      _G_count=`expr $_G_count + 1`
      if test "$_G_count" -gt "$_G_path_prog_max"; then
        # Best one so far, save it but keep looking for a better one
        func_check_prog_result=$_G_path_prog
        _G_path_prog_max=$_G_count
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      fi
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      # 10*(2^10) chars as input seems more than enough
      test 10 -lt "$_G_count" && break
    done
    rm -f conftest.in conftest.tmp conftest.nl conftest.out
  }
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  func_path_progs "sed gsed" func_check_prog_sed $PATH:/usr/xpg4/bin
  rm -f conftest.sed
  SED=$func_path_progs_result
}
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# Unless the user overrides by setting GREP, search the path for either GNU
# grep, or the grep that truncates its output the least.
test -z "$GREP" && {
  func_check_prog_grep ()
  {
    _G_path_prog=$1
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    _G_count=0
    _G_path_prog_max=0
    printf 0123456789 >conftest.in
    while :
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    do
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      cat conftest.in conftest.in >conftest.tmp
      mv conftest.tmp conftest.in
      cp conftest.in conftest.nl
      echo 'GREP' >> conftest.nl
      "$_G_path_prog" -e 'GREP$' -e '-(cannot match)-' <conftest.nl >conftest.out 2>/dev/null || break
      diff conftest.out conftest.nl >/dev/null 2>&1 || break
      _G_count=`expr $_G_count + 1`
      if test "$_G_count" -gt "$_G_path_prog_max"; then
        # Best one so far, save it but keep looking for a better one
        func_check_prog_result=$_G_path_prog
        _G_path_prog_max=$_G_count
      fi
      # 10*(2^10) chars as input seems more than enough
      test 10 -lt "$_G_count" && break
    done
    rm -f conftest.in conftest.tmp conftest.nl conftest.out
  }
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  func_path_progs "grep ggrep" func_check_prog_grep $PATH:/usr/xpg4/bin
  GREP=$func_path_progs_result
}
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## ------------------------------- ##
## User overridable command paths. ##
## ------------------------------- ##
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# All uppercase variable names are used for environment variables.  These
# variables can be overridden by the user before calling a script that
# uses them if a suitable command of that name is not already available
# in the command search PATH.
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: ${CP="cp -f"}
: ${ECHO="printf %s\n"}
: ${EGREP="$GREP -E"}
: ${FGREP="$GREP -F"}
: ${LN_S="ln -s"}
: ${MAKE="make"}
: ${MKDIR="mkdir"}
: ${MV="mv -f"}
: ${RM="rm -f"}
: ${SHELL="${CONFIG_SHELL-/bin/sh}"}
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## -------------------- ##
## Useful sed snippets. ##
## -------------------- ##
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sed_dirname='s|/[^/]*$||'
sed_basename='s|^.*/||'
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# Sed substitution that helps us do robust quoting.  It backslashifies
# metacharacters that are still active within double-quoted strings.
sed_quote_subst='s|\([`"$\\]\)|\\\1|g'

# Same as above, but do not quote variable references.
sed_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
# that contains forward slashes, into one that contains
# (escaped) backslashes.  A very naive implementation.
sed_naive_backslashify='s|\\\\*|\\|g;s|/|\\|g;s|\\|\\\\|g'

# Re-'\' parameter expansions in output of sed_double_quote_subst that
# were '\'-ed in input to the same.  If an odd number of '\' preceded a
# '$' in input to sed_double_quote_subst, that '$' 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 '$'.  '\' that '$'.
_G_bs='\\'
_G_bs2='\\\\'
_G_bs4='\\\\\\\\'
_G_dollar='\$'
sed_double_backslash="\
  s/$_G_bs4/&\\
/g
  s/^$_G_bs2$_G_dollar/$_G_bs&/
  s/\\([^$_G_bs]\\)$_G_bs2$_G_dollar/\\1$_G_bs2$_G_bs$_G_dollar/g
  s/\n//g"


## ----------------- ##
## Global variables. ##
## ----------------- ##

# Except for the global variables explicitly listed below, the following
# functions in the '^func_' namespace, and the '^require_' namespace
# variables initialised in the 'Resource management' section, sourcing
# this file will not pollute your global namespace with anything
# else. There's no portable way to scope variables in Bourne shell
# though, so actually running these functions will sometimes place
# results into a variable named after the function, and often use
# temporary variables in the '^_G_' namespace. If you are careful to
# avoid using those namespaces casually in your sourcing script, things
# should continue to work as you expect. And, of course, you can freely
# overwrite any of the functions or variables defined here before
# calling anything to customize them.
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EXIT_SUCCESS=0
EXIT_FAILURE=1
EXIT_MISMATCH=63  # $? = 63 is used to indicate version mismatch to missing.
EXIT_SKIP=77	  # $? = 77 is used to indicate a skipped test to automake.
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# Allow overriding, eg assuming that you follow the convention of
# putting '$debug_cmd' at the start of all your functions, you can get
# bash to show function call trace with:
#
#    debug_cmd='eval echo "${FUNCNAME[0]} $*" >&2' bash your-script-name
debug_cmd=${debug_cmd-":"}
exit_cmd=:
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# By convention, finish your script with:
#
#    exit $exit_status
#
# so that you can set exit_status to non-zero if you want to indicate
# something went wrong during execution without actually bailing out at
# the point of failure.
exit_status=$EXIT_SUCCESS
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# 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

# The name of this program.
progname=`$ECHO "$progpath" |$SED "$sed_basename"`

# Make sure we have an absolute progpath for reexecution:
case $progpath in
  [\\/]*|[A-Za-z]:\\*) ;;
  *[\\/]*)
     progdir=`$ECHO "$progpath" |$SED "$sed_dirname"`
     progdir=`cd "$progdir" && pwd`
     progpath=$progdir/$progname
     ;;
  *)
     _G_IFS=$IFS
     IFS=${PATH_SEPARATOR-:}
     for progdir in $PATH; do
       IFS=$_G_IFS
       test -x "$progdir/$progname" && break
     done
     IFS=$_G_IFS
     test -n "$progdir" || progdir=`pwd`
     progpath=$progdir/$progname
     ;;
esac
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## ----------------- ##
## Standard options. ##
## ----------------- ##
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# The following options affect the operation of the functions defined
# below, and should be set appropriately depending on run-time para-
# meters passed on the command line.
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opt_dry_run=false
opt_quiet=false
opt_verbose=false
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# Categories 'all' and 'none' are always available.  Append any others
# you will pass as the first argument to func_warning from your own
# code.
warning_categories=
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# By default, display warnings according to 'opt_warning_types'.  Set
# 'warning_func'  to ':' to elide all warnings, or func_fatal_error to
# treat the next displayed warning as a fatal error.
warning_func=func_warn_and_continue
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# Set to 'all' to display all warnings, 'none' to suppress all
# warnings, or a space delimited list of some subset of
# 'warning_categories' to display only the listed warnings.
opt_warning_types=all
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## -------------------- ##
## Resource management. ##
## -------------------- ##
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# This section contains definitions for functions that each ensure a
# particular resource (a file, or a non-empty configuration variable for
# example) is available, and if appropriate to extract default values
# from pertinent package files. Call them using their associated
# 'require_*' variable to ensure that they are executed, at most, once.
#
# It's entirely deliberate that calling these functions can set
# variables that don't obey the namespace limitations obeyed by the rest
# of this file, in order that that they be as useful as possible to
# callers.
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# require_term_colors
# -------------------
# Allow display of bold text on terminals that support it.
require_term_colors=func_require_term_colors
func_require_term_colors ()
{
    $debug_cmd

    test -t 1 && {
      # COLORTERM and USE_ANSI_COLORS environment variables take
      # precedence, because most terminfo databases neglect to describe
      # whether color sequences are supported.
      test -n "${COLORTERM+set}" && : ${USE_ANSI_COLORS="1"}

      if test 1 = "$USE_ANSI_COLORS"; then
        # Standard ANSI escape sequences
        tc_reset=''
        tc_bold='';   tc_standout=''
        tc_red='';   tc_green=''
        tc_blue='';  tc_cyan=''
      else
        # Otherwise trust the terminfo database after all.
        test -n "`tput sgr0 2>/dev/null`" && {
          tc_reset=`tput sgr0`
          test -n "`tput bold 2>/dev/null`" && tc_bold=`tput bold`
          tc_standout=$tc_bold
          test -n "`tput smso 2>/dev/null`" && tc_standout=`tput smso`
          test -n "`tput setaf 1 2>/dev/null`" && tc_red=`tput setaf 1`
          test -n "`tput setaf 2 2>/dev/null`" && tc_green=`tput setaf 2`
          test -n "`tput setaf 4 2>/dev/null`" && tc_blue=`tput setaf 4`
          test -n "`tput setaf 5 2>/dev/null`" && tc_cyan=`tput setaf 5`
        }
      fi
    }

    require_term_colors=:
}


## ----------------- ##
## Function library. ##
## ----------------- ##

# This section contains a variety of useful functions to call in your
# scripts. Take note of the portable wrappers for features provided by
# some modern shells, which will fall back to slower equivalents on
# less featureful shells.


# func_append VAR VALUE
# ---------------------
# Append VALUE onto the existing contents of VAR.

  # We should try to minimise forks, especially on Windows where they are
  # unreasonably slow, so skip the feature probes when bash or zsh are
  # being used:
  if test set = "${BASH_VERSION+set}${ZSH_VERSION+set}"; then
    : ${_G_HAVE_ARITH_OP="yes"}
    : ${_G_HAVE_XSI_OPS="yes"}
    # The += operator was introduced in bash 3.1
    case $BASH_VERSION in
      [12].* | 3.0 | 3.0*) ;;
      *)
        : ${_G_HAVE_PLUSEQ_OP="yes"}
        ;;
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    esac
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  fi
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  # _G_HAVE_PLUSEQ_OP
  # Can be empty, in which case the shell is probed, "yes" if += is
  # useable or anything else if it does not work.
  test -z "$_G_HAVE_PLUSEQ_OP" \
    && (eval 'x=a; x+=" b"; test "a b" = "$x"') 2>/dev/null \
    && _G_HAVE_PLUSEQ_OP=yes

if test yes = "$_G_HAVE_PLUSEQ_OP"
then
  # This is an XSI compatible shell, allowing a faster implementation...
  eval 'func_append ()
  {
    $debug_cmd
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    eval "$1+=\$2"
  }'
else
  # ...otherwise fall back to using expr, which is often a shell builtin.
  func_append ()
  {
    $debug_cmd
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    eval "$1=\$$1\$2"
  }
fi
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# func_append_quoted VAR VALUE
# ----------------------------
# Quote VALUE and append to the end of shell variable VAR, separated
# by a space.
if test yes = "$_G_HAVE_PLUSEQ_OP"; then
  eval 'func_append_quoted ()
  {
    $debug_cmd

    func_quote_for_eval "$2"
    eval "$1+=\\ \$func_quote_for_eval_result"
  }'
else
  func_append_quoted ()
  {
    $debug_cmd

    func_quote_for_eval "$2"
    eval "$1=\$$1\\ \$func_quote_for_eval_result"
  }
fi
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# func_append_uniq VAR VALUE
# --------------------------
# Append unique VALUE onto the existing contents of VAR, assuming
# entries are delimited by the first character of VALUE.  For example:
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#
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#   func_append_uniq options " --another-option option-argument"
#
# will only append to $options if " --another-option option-argument "
# is not already present somewhere in $options already (note spaces at
# each end implied by leading space in second argument).
func_append_uniq ()
{
    $debug_cmd
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    eval _G_current_value='`$ECHO $'$1'`'
    _G_delim=`expr "$2" : '\(.\)'`
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    case $_G_delim$_G_current_value$_G_delim in
      *"$2$_G_delim"*) ;;
      *) func_append "$@" ;;
    esac
}
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# func_arith TERM...
# ------------------
# Set func_arith_result to the result of evaluating TERMs.
  test -z "$_G_HAVE_ARITH_OP" \
    && (eval 'test 2 = $(( 1 + 1 ))') 2>/dev/null \
    && _G_HAVE_ARITH_OP=yes
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if test yes = "$_G_HAVE_ARITH_OP"; then
  eval 'func_arith ()
  {
    $debug_cmd
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    func_arith_result=$(( $* ))
  }'
else
  func_arith ()
  {
    $debug_cmd
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    func_arith_result=`expr "$@"`
  }
fi
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# func_basename FILE
# ------------------
# Set func_basename_result to FILE with everything up to and including
# the last / stripped.
if test yes = "$_G_HAVE_XSI_OPS"; then
  # If this shell supports suffix pattern removal, then use it to avoid
  # forking. Hide the definitions single quotes in case the shell chokes
  # on unsupported syntax...
  _b='func_basename_result=${1##*/}'
  _d='case $1 in
        */*) func_dirname_result=${1%/*}$2 ;;
        *  ) func_dirname_result=$3        ;;
      esac'
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else
  # ...otherwise fall back to using sed.
  _b='func_basename_result=`$ECHO "$1" |$SED "$sed_basename"`'
  _d='func_dirname_result=`$ECHO "$1"  |$SED "$sed_dirname"`
      if test "X$func_dirname_result" = "X$1"; then
        func_dirname_result=$3
      else
        func_append func_dirname_result "$2"
      fi'
fi
669

670 671 672
eval 'func_basename ()
{
    $debug_cmd
673

674 675
    '"$_b"'
}'
676 677


678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704
# func_dirname FILE APPEND NONDIR_REPLACEMENT
# -------------------------------------------
# Compute the dirname of FILE.  If nonempty, add APPEND to the result,
# otherwise set result to NONDIR_REPLACEMENT.
eval 'func_dirname ()
{
    $debug_cmd

    '"$_d"'
}'


# 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"
# For efficiency, we do not delegate to the functions above but instead
# duplicate the functionality here.
eval 'func_dirname_and_basename ()
{
    $debug_cmd
705

706 707 708
    '"$_b"'
    '"$_d"'
}'
709 710


711 712 713 714 715 716
# func_echo ARG...
# ----------------
# Echo program name prefixed message.
func_echo ()
{
    $debug_cmd
717

718
    _G_message=$*
719

720 721 722 723 724 725 726 727
    func_echo_IFS=$IFS
    IFS=$nl
    for _G_line in $_G_message; do
      IFS=$func_echo_IFS
      $ECHO "$progname: $_G_line"
    done
    IFS=$func_echo_IFS
}
728 729


730 731 732 733 734 735 736
# func_echo_all ARG...
# --------------------
# Invoke $ECHO with all args, space-separated.
func_echo_all ()
{
    $ECHO "$*"
}
737 738


739 740 741 742 743 744 745
# func_echo_infix_1 INFIX ARG...
# ------------------------------
# Echo program name, followed by INFIX on the first line, with any
# additional lines not showing INFIX.
func_echo_infix_1 ()
{
    $debug_cmd
746

747
    $require_term_colors
748

749 750 751 752
    _G_infix=$1; shift
    _G_indent=$_G_infix
    _G_prefix="$progname: $_G_infix: "
    _G_message=$*
753

754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772
    # Strip color escape sequences before counting printable length
    for _G_tc in "$tc_reset" "$tc_bold" "$tc_standout" "$tc_red" "$tc_green" "$tc_blue" "$tc_cyan"
    do
      test -n "$_G_tc" && {
        _G_esc_tc=`$ECHO "$_G_tc" | $SED "$sed_make_literal_regex"`
        _G_indent=`$ECHO "$_G_indent" | $SED "s|$_G_esc_tc||g"`
      }
    done
    _G_indent="$progname: "`echo "$_G_indent" | $SED 's|.| |g'`"  " ## exclude from sc_prohibit_nested_quotes

    func_echo_infix_1_IFS=$IFS
    IFS=$nl
    for _G_line in $_G_message; do
      IFS=$func_echo_infix_1_IFS
      $ECHO "$_G_prefix$tc_bold$_G_line$tc_reset" >&2
      _G_prefix=$_G_indent
    done
    IFS=$func_echo_infix_1_IFS
}
773 774


775 776 777 778 779 780
# func_error ARG...
# -----------------
# Echo program name prefixed message to standard error.
func_error ()
{
    $debug_cmd
781

782
    $require_term_colors
783

784 785
    func_echo_infix_1 "  $tc_standout${tc_red}error$tc_reset" "$*" >&2
}
786 787


788 789 790 791 792 793
# func_fatal_error ARG...
# -----------------------
# Echo program name prefixed message to standard error, and exit.
func_fatal_error ()
{
    $debug_cmd
794

795 796 797
    func_error "$*"
    exit $EXIT_FAILURE
}
798 799


800 801 802 803 804 805
# func_grep EXPRESSION FILENAME
# -----------------------------
# Check whether EXPRESSION matches any line of FILENAME, without output.
func_grep ()
{
    $debug_cmd
806

807 808
    $GREP "$1" "$2" >/dev/null 2>&1
}
809 810


811 812 813 814 815 816 817 818
# func_len STRING
# ---------------
# Set func_len_result to the length of STRING. STRING may not
# start with a hyphen.
  test -z "$_G_HAVE_XSI_OPS" \
    && (eval 'x=a/b/c;
      test 5aa/bb/cc = "${#x}${x%%/*}${x%/*}${x#*/}${x##*/}"') 2>/dev/null \
    && _G_HAVE_XSI_OPS=yes
819

820 821 822 823
if test yes = "$_G_HAVE_XSI_OPS"; then
  eval 'func_len ()
  {
    $debug_cmd
824

825 826 827 828 829 830
    func_len_result=${#1}
  }'
else
  func_len ()
  {
    $debug_cmd
831

832 833 834
    func_len_result=`expr "$1" : ".*" 2>/dev/null || echo $max_cmd_len`
  }
fi
835 836


837 838 839 840 841 842
# func_mkdir_p DIRECTORY-PATH
# ---------------------------
# Make sure the entire path to DIRECTORY-PATH is available.
func_mkdir_p ()
{
    $debug_cmd
843

844 845
    _G_directory_path=$1
    _G_dir_list=
846

847
    if test -n "$_G_directory_path" && test : != "$opt_dry_run"; then
848

849 850 851 852
      # Protect directory names starting with '-'
      case $_G_directory_path in
        -*) _G_directory_path=./$_G_directory_path ;;
      esac
853

854 855 856 857 858
      # While some portion of DIR does not yet exist...
      while test ! -d "$_G_directory_path"; do
        # ...make a list in topmost first order.  Use a colon delimited
	# list incase some portion of path contains whitespace.
        _G_dir_list=$_G_directory_path:$_G_dir_list
859

860 861
        # If the last portion added has no slash in it, the list is done
        case $_G_directory_path in */*) ;; *) break ;; esac
862

863 864 865 866 867 868 869 870 871 872 873 874 875 876
        # ...otherwise throw away the child directory and loop
        _G_directory_path=`$ECHO "$_G_directory_path" | $SED -e "$sed_dirname"`
      done
      _G_dir_list=`$ECHO "$_G_dir_list" | $SED 's|:*$||'`

      func_mkdir_p_IFS=$IFS; IFS=:
      for _G_dir in $_G_dir_list; do
	IFS=$func_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!
        $MKDIR "$_G_dir" 2>/dev/null || :
      done
      IFS=$func_mkdir_p_IFS
877

878 879 880 881 882
      # Bail out if we (or some other process) failed to create a directory.
      test -d "$_G_directory_path" || \
        func_fatal_error "Failed to create '$1'"
    fi
}
883 884


885 886 887 888 889 890 891 892
# func_mktempdir [BASENAME]
# -------------------------
# Make a temporary directory that won't clash with other running
# libtool processes, and avoids race conditions if possible.  If
# given, BASENAME is the basename for that directory.
func_mktempdir ()
{
    $debug_cmd
893

894
    _G_template=${TMPDIR-/tmp}/${1-$progname}
895

896 897 898 899
    if test : = "$opt_dry_run"; then
      # Return a directory name, but don't create it in dry-run mode
      _G_tmpdir=$_G_template-$$
    else
900

901 902
      # If mktemp works, use that first and foremost
      _G_tmpdir=`mktemp -d "$_G_template-XXXXXXXX" 2>/dev/null`
903

904 905 906
      if test ! -d "$_G_tmpdir"; then
        # Failing that, at least try and use $RANDOM to avoid a race
        _G_tmpdir=$_G_template-${RANDOM-0}$$
907

908 909 910 911 912
        func_mktempdir_umask=`umask`
        umask 0077
        $MKDIR "$_G_tmpdir"
        umask $func_mktempdir_umask
      fi
913

914 915 916 917
      # If we're not in dry-run mode, bomb out on failure
      test -d "$_G_tmpdir" || \
        func_fatal_error "cannot create temporary directory '$_G_tmpdir'"
    fi
918

919 920
    $ECHO "$_G_tmpdir"
}
921 922


923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972
# 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.
func_normal_abspath ()
{
    $debug_cmd

    # These SED scripts presuppose an absolute path with a trailing slash.
    _G_pathcar='s|^/\([^/]*\).*$|\1|'
    _G_pathcdr='s|^/[^/]*||'
    _G_removedotparts=':dotsl
		s|/\./|/|g
		t dotsl
		s|/\.$|/|'
    _G_collapseslashes='s|/\{1,\}|/|g'
    _G_finalslash='s|/*$|/|'

    # 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
973

974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010
    # 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" | $SED \
          -e "$_G_removedotparts" -e "$_G_collapseslashes" -e "$_G_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" | $SED \
          -e "$_G_pathcar"`
      func_normal_abspath_tpath=`$ECHO "$func_normal_abspath_tpath" | $SED \
          -e "$_G_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=$func_dirname_result
          ;;
        *)
          # Actual path component, append it.
          func_append func_normal_abspath_result "/$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
}
1011 1012


1013 1014 1015 1016 1017 1018
# func_notquiet ARG...
# --------------------
# Echo program name prefixed message only when not in quiet mode.
func_notquiet ()
{
    $debug_cmd
1019

1020
    $opt_quiet || func_echo ${1+"$@"}
1021

1022 1023 1024 1025 1026
    # 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:
    :
}
1027 1028


1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072
# func_relative_path SRCDIR DSTDIR
# --------------------------------
# Set func_relative_path_result to the relative path from SRCDIR to DSTDIR.
func_relative_path ()
{
    $debug_cmd

    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 -z "$func_relative_path_tlibdir"; then
            # Have to descend all the way to the root!
            func_relative_path_result=../$func_relative_path_result
            func_relative_path_tcancelled=$func_relative_path_tbindir
            break
          fi
          func_relative_path_result=../$func_relative_path_result
          ;;
      esac
    done
1073

1074 1075 1076 1077 1078 1079 1080
    # 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 '/' '/' "$func_relative_path_tcancelled"
    if test -n "$func_stripname_result"; then
      func_append func_relative_path_result "/$func_stripname_result"
    fi
1081

1082 1083 1084 1085 1086
    # Normalisation. If bindir is libdir, return '.' else relative path.
    if test -n "$func_relative_path_result"; then
      func_stripname './' '' "$func_relative_path_result"
      func_relative_path_result=$func_stripname_result
    fi
1087

1088
    test -n "$func_relative_path_result" || func_relative_path_result=.
1089

1090 1091
    :
}
1092 1093


1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120
# func_quote_for_eval ARG...
# --------------------------
# Aesthetically quote ARGs to be evaled later.
# This function returns two values:
#   i) func_quote_for_eval_result
#      double-quoted, suitable for a subsequent eval
#  ii) func_quote_for_eval_unquoted_result
#      has all characters that are still active within double
#      quotes backslashified.
func_quote_for_eval ()
{
    $debug_cmd

    func_quote_for_eval_unquoted_result=
    func_quote_for_eval_result=
    while test 0 -lt $#; do
      case $1 in
        *[\\\`\"\$]*)
	  _G_unquoted_arg=`printf '%s\n' "$1" |$SED "$sed_quote_subst"` ;;
        *)
          _G_unquoted_arg=$1 ;;
      esac
      if test -n "$func_quote_for_eval_unquoted_result"; then
	func_append func_quote_for_eval_unquoted_result " $_G_unquoted_arg"
      else
        func_append func_quote_for_eval_unquoted_result "$_G_unquoted_arg"
      fi
1121

1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134
      case $_G_unquoted_arg in
        # Double-quote args containing shell metacharacters to delay
        # word splitting, command substitution and variable expansion
        # for a subsequent eval.
        # Many Bourne shells cannot handle close brackets correctly
        # in scan sets, so we specify it separately.
        *[\[\~\#\^\&\*\(\)\{\}\|\;\<\>\?\'\ \	]*|*]*|"")
          _G_quoted_arg=\"$_G_unquoted_arg\"
          ;;
        *)
          _G_quoted_arg=$_G_unquoted_arg
	  ;;
      esac
1135

1136 1137 1138 1139 1140 1141 1142 1143
      if test -n "$func_quote_for_eval_result"; then
	func_append func_quote_for_eval_result " $_G_quoted_arg"
      else
        func_append func_quote_for_eval_result "$_G_quoted_arg"
      fi
      shift
    done
}
1144 1145


1146 1147 1148 1149 1150 1151 1152
# 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 ()
{
    $debug_cmd
1153

1154 1155 1156 1157 1158 1159 1160
    case $1 in
      *[\\\`\"]*)
	_G_arg=`$ECHO "$1" | $SED \
	    -e "$sed_double_quote_subst" -e "$sed_double_backslash"` ;;
      *)
        _G_arg=$1 ;;
    esac
1161

1162 1163 1164 1165 1166 1167 1168 1169 1170
    case $_G_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.
      *[\[\~\#\^\&\*\(\)\{\}\|\;\<\>\?\'\ \	]*|*]*|"")
        _G_arg=\"$_G_arg\"
        ;;
    esac
1171

1172 1173
    func_quote_for_expand_result=$_G_arg
}
1174 1175


1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196
# func_stripname PREFIX SUFFIX NAME
# ---------------------------------
# strip PREFIX and SUFFIX from NAME, and store in func_stripname_result.
# 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).
if test yes = "$_G_HAVE_XSI_OPS"; then
  eval 'func_stripname ()
  {
    $debug_cmd

    # pdksh 5.2.14 does not do ${X%$Y} correctly if both X and Y are
    # positional parameters, so assign one to ordinary variable first.
    func_stripname_result=$3
    func_stripname_result=${func_stripname_result#"$1"}
    func_stripname_result=${func_stripname_result%"$2"}
  }'
else
  func_stripname ()
  {
    $debug_cmd
1197

1198 1199 1200 1201 1202 1203
    case $2 in
      .*) func_stripname_result=`$ECHO "$3" | $SED -e "s%^$1%%" -e "s%\\\\$2\$%%"`;;
      *)  func_stripname_result=`$ECHO "$3" | $SED -e "s%^$1%%" -e "s%$2\$%%"`;;
    esac
  }
fi
1204 1205


1206 1207 1208 1209 1210 1211 1212 1213
# func_show_eval CMD [FAIL_EXP]
# -----------------------------
# Unless opt_quiet 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 ()
{
    $debug_cmd
1214

1215 1216
    _G_cmd=$1
    _G_fail_exp=${2-':'}
1217

1218 1219
    func_quote_for_expand "$_G_cmd"
    eval "func_notquiet $func_quote_for_expand_result"
1220

1221 1222 1223 1224 1225 1226 1227 1228
    $opt_dry_run || {
      eval "$_G_cmd"
      _G_status=$?
      if test 0 -ne "$_G_status"; then
	eval "(exit $_G_status); $_G_fail_exp"
      fi
    }
}
1229 1230


1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257
# func_show_eval_locale CMD [FAIL_EXP]
# ------------------------------------
# Unless opt_quiet 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 ()
{
    $debug_cmd

    _G_cmd=$1
    _G_fail_exp=${2-':'}

    $opt_quiet || {
      func_quote_for_expand "$_G_cmd"
      eval "func_echo $func_quote_for_expand_result"
    }

    $opt_dry_run || {
      eval "$_G_user_locale
	    $_G_cmd"
      _G_status=$?
      eval "$_G_safe_locale"
      if test 0 -ne "$_G_status"; then
	eval "(exit $_G_status); $_G_fail_exp"
      fi
    }
}
1258 1259


1260 1261 1262 1263 1264 1265 1266 1267 1268
# 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 ()
{
    $debug_cmd
1269

1270 1271 1272 1273 1274 1275 1276 1277 1278
    case $1 in
    [0-9]* | *[!a-zA-Z0-9_]*)
      func_tr_sh_result=`$ECHO "$1" | $SED -e 's/^\([0-9]\)/_\1/' -e 's/[^a-zA-Z0-9_]/_/g'`
      ;;
    * )
      func_tr_sh_result=$1
      ;;
    esac
}
1279 1280


1281 1282 1283 1284 1285 1286
# func_verbose ARG...
# -------------------
# Echo program name prefixed message in verbose mode only.
func_verbose ()
{
    $debug_cmd
1287

1288
    $opt_verbose && func_echo "$*"
1289

1290 1291
    :
}
1292 1293


1294 1295 1296 1297 1298 1299
# func_warn_and_continue ARG...
# -----------------------------
# Echo program name prefixed warning message to standard error.
func_warn_and_continue ()
{
    $debug_cmd
1300

1301
    $require_term_colors
1302

1303 1304
    func_echo_infix_1 "${tc_red}warning$tc_reset" "$*" >&2
}
1305 1306


1307 1308 1309 1310 1311 1312 1313 1314 1315
# func_warning CATEGORY ARG...
# ----------------------------
# Echo program name prefixed warning message to standard error. Warning
# messages can be filtered according to CATEGORY, where this function
# elides messages where CATEGORY is not listed in the global variable
# 'opt_warning_types'.
func_warning ()
{
    $debug_cmd
1316

1317 1318 1319 1320 1321
    # CATEGORY must be in the warning_categories list!
    case " $warning_categories " in
      *" $1 "*) ;;
      *) func_internal_error "invalid warning category '$1'" ;;
    esac
1322

1323 1324
    _G_category=$1
    shift
1325

1326 1327 1328 1329
    case " $opt_warning_types " in
      *" $_G_category "*) $warning_func ${1+"$@"} ;;
    esac
}
1330 1331


1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343
# func_sort_ver VER1 VER2
# -----------------------
# 'sort -V' is not generally available.
# Note this deviates from the version comparison in automake
# in that it treats 1.5 < 1.5.0, and treats 1.4.4a < 1.4-p3a
# but this should suffice as we won't be specifying old
# version formats or redundant trailing .0 in bootstrap.conf.
# If we did want full compatibility then we should probably
# use m4_version_compare from autoconf.
func_sort_ver ()
{
    $debug_cmd
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    printf '%s\n%s\n' "$1" "$2" \
      | sort -t. -k 1,1n -k 2,2n -k 3,3n -k 4,4n -k 5,5n -k 6,6n -k 7,7n -k 8,8n -k 9,9n
}
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# func_lt_ver PREV CURR
# ---------------------
# Return true if PREV and CURR are in the correct order according to
# func_sort_ver, otherwise false.  Use it like this:
#
#  func_lt_ver "$prev_ver" "$proposed_ver" || func_fatal_error "..."
func_lt_ver ()
{
    $debug_cmd

    test "x$1" = x`func_sort_ver "$1" "$2" | $SED 1q`
}


# Local variables:
# mode: shell-script
# sh-indentation: 2
# eval: (add-hook 'before-save-hook 'time-stamp)
# time-stamp-pattern: "10/scriptversion=%:y-%02m-%02d.%02H; # UTC"
# time-stamp-time-zone: "UTC"
# End:
#! /bin/sh

# Set a version string for this script.
scriptversion=2014-01-07.03; # UTC

# A portable, pluggable option parser for Bourne shell.
# Written by Gary V. Vaughan, 2010

# Copyright (C) 2010-2015 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.

# 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 3 of the License, 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, see <http://www.gnu.org/licenses/>.

# Please report bugs or propose patches to gary@gnu.org.


## ------ ##
## Usage. ##
## ------ ##

# This file is a library for parsing options in your shell scripts along
# with assorted other useful supporting features that you can make use
# of too.
#
# For the simplest scripts you might need only:
#
#   #!/bin/sh
#   . relative/path/to/funclib.sh
#   . relative/path/to/options-parser
#   scriptversion=1.0
#   func_options ${1+"$@"}
#   eval set dummy "$func_options_result"; shift
#   ...rest of your script...
#
# In order for the '--version' option to work, you will need to have a
# suitably formatted comment like the one at the top of this file
# starting with '# Written by ' and ending with '# warranty; '.
#
# For '-h' and '--help' to work, you will also need a one line
# description of your script's purpose in a comment directly above the
# '# Written by ' line, like the one at the top of this file.
#
# The default options also support '--debug', which will turn on shell
# execution tracing (see the comment above debug_cmd below for another
# use), and '--verbose' and the func_verbose function to allow your script
# to display verbose messages only when your user has specified
# '--verbose'.
#
# After sourcing this file, you can plug processing for additional
# options by amending the variables from the 'Configuration' section
# below, and following the instructions in the 'Option parsing'
# section further down.

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

# You should override these variables in your script after sourcing this
# file so that they reflect the customisations you have added to the
# option parser.

# The usage line for option parsing errors and the start of '-h' and
# '--help' output messages. You can embed shell variables for delayed
# expansion at the time the message is displayed, but you will need to
# quote other shell meta-characters carefully to prevent them being
# expanded when the contents are evaled.
usage='$progpath [OPTION]...'

# Short help message in response to '-h' and '--help'.  Add to this or
# override it after sourcing this library to reflect the full set of
# options your script accepts.
usage_message="\
       --debug        enable verbose shell tracing
   -W, --warnings=CATEGORY
                      report the warnings falling in CATEGORY [all]
   -v, --verbose      verbosely report processing
       --version      print version information and exit
   -h, --help         print short or long help message and exit
"

# Additional text appended to 'usage_message' in response to '--help'.
long_help_message="
Warning categories include:
       'all'          show all warnings
       'none'         turn off all the warnings
       'error'        warnings are treated as fatal errors"

# Help message printed before fatal option parsing errors.
fatal_help="Try '\$progname --help' for more information."



## ------------------------- ##
## Hook function management. ##
## ------------------------- ##

# This section contains functions for adding, removing, and running hooks
# to the main code.  A hook is just a named list of of function, that can
# be run in order later on.

# func_hookable FUNC_NAME
# -----------------------
# Declare that FUNC_NAME will run hooks added with
# 'func_add_hook FUNC_NAME ...'.
func_hookable ()
{
    $debug_cmd

    func_append hookable_fns " $1"
}


# func_add_hook FUNC_NAME HOOK_FUNC
# ---------------------------------
# Request that FUNC_NAME call HOOK_FUNC before it returns.  FUNC_NAME must
# first have been declared "hookable" by a call to 'func_hookable'.
func_add_hook ()
{
    $debug_cmd

    case " $hookable_fns " in
      *" $1 "*) ;;
      *) func_fatal_error "'$1' does not accept hook functions." ;;
1505 1506
    esac

1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535
    eval func_append ${1}_hooks '" $2"'
}


# func_remove_hook FUNC_NAME HOOK_FUNC
# ------------------------------------
# Remove HOOK_FUNC from the list of functions called by FUNC_NAME.
func_remove_hook ()
{
    $debug_cmd

    eval ${1}_hooks='`$ECHO "\$'$1'_hooks" |$SED "s| '$2'||"`'
}


# func_run_hooks FUNC_NAME [ARG]...
# ---------------------------------
# Run all hook functions registered to FUNC_NAME.
# It is assumed that the list of hook functions contains nothing more
# than a whitespace-delimited list of legal shell function names, and
# no effort is wasted trying to catch shell meta-characters or preserve
# whitespace.
func_run_hooks ()
{
    $debug_cmd

    case " $hookable_fns " in
      *" $1 "*) ;;
      *) func_fatal_error "'$1' does not support hook funcions.n" ;;
1536 1537
    esac

1538 1539 1540 1541 1542 1543 1544 1545 1546
    eval _G_hook_fns=\$$1_hooks; shift

    for _G_hook in $_G_hook_fns; do
      eval $_G_hook '"$@"'

      # store returned options list back into positional
      # parameters for next 'cmd' execution.
      eval _G_hook_result=\$${_G_hook}_result
      eval set dummy "$_G_hook_result"; shift
1547 1548
    done

1549 1550 1551
    func_quote_for_eval ${1+"$@"}
    func_run_hooks_result=$func_quote_for_eval_result
}
1552 1553 1554



1555 1556 1557
## --------------- ##
## Option parsing. ##
## --------------- ##
1558

1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621
# In order to add your own option parsing hooks, you must accept the
# full positional parameter list in your hook function, remove any
# options that you action, and then pass back the remaining unprocessed
# options in '<hooked_function_name>_result', escaped suitably for
# 'eval'.  Like this:
#
#    my_options_prep ()
#    {
#        $debug_cmd
#
#        # Extend the existing usage message.
#        usage_message=$usage_message'
#      -s, --silent       don'\''t print informational messages
#    '
#
#        func_quote_for_eval ${1+"$@"}
#        my_options_prep_result=$func_quote_for_eval_result
#    }
#    func_add_hook func_options_prep my_options_prep
#
#
#    my_silent_option ()
#    {
#        $debug_cmd
#
#        # Note that for efficiency, we parse as many options as we can
#        # recognise in a loop before passing the remainder back to the
#        # caller on the first unrecognised argument we encounter.
#        while test $# -gt 0; do
#          opt=$1; shift
#          case $opt in
#            --silent|-s) opt_silent=: ;;
#            # Separate non-argument short options:
#            -s*)         func_split_short_opt "$_G_opt"
#                         set dummy "$func_split_short_opt_name" \
#                             "-$func_split_short_opt_arg" ${1+"$@"}
#                         shift
#                         ;;
#            *)            set dummy "$_G_opt" "$*"; shift; break ;;
#          esac
#        done
#
#        func_quote_for_eval ${1+"$@"}
#        my_silent_option_result=$func_quote_for_eval_result
#    }
#    func_add_hook func_parse_options my_silent_option
#
#
#    my_option_validation ()
#    {
#        $debug_cmd
#
#        $opt_silent && $opt_verbose && func_fatal_help "\
#    '--silent' and '--verbose' options are mutually exclusive."
#
#        func_quote_for_eval ${1+"$@"}
#        my_option_validation_result=$func_quote_for_eval_result
#    }
#    func_add_hook func_validate_options my_option_validation
#
# You'll alse need to manually amend $usage_message to reflect the extra
# options you parse.  It's preferable to append if you can, so that
# multiple option parsing hooks can be added safely.
1622 1623


1624 1625 1626 1627 1628 1629 1630 1631
# func_options [ARG]...
# ---------------------
# All the functions called inside func_options are hookable. See the
# individual implementations for details.
func_hookable func_options
func_options ()
{
    $debug_cmd
1632

1633 1634 1635 1636 1637
    func_options_prep ${1+"$@"}
    eval func_parse_options \
        ${func_options_prep_result+"$func_options_prep_result"}
    eval func_validate_options \
        ${func_parse_options_result+"$func_parse_options_result"}
1638

1639 1640
    eval func_run_hooks func_options \
        ${func_validate_options_result+"$func_validate_options_result"}
1641

1642 1643 1644
    # save modified positional parameters for caller
    func_options_result=$func_run_hooks_result
}
1645 1646


1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658
# func_options_prep [ARG]...
# --------------------------
# All initialisations required before starting the option parse loop.
# Note that when calling hook functions, we pass through the list of
# positional parameters.  If a hook function modifies that list, and
# needs to propogate that back to rest of this script, then the complete
# modified list must be put in 'func_run_hooks_result' before
# returning.
func_hookable func_options_prep
func_options_prep ()
{
    $debug_cmd
1659

1660 1661 1662
    # Option defaults:
    opt_verbose=false
    opt_warning_types=
1663

1664
    func_run_hooks func_options_prep ${1+"$@"}
1665

1666 1667 1668
    # save modified positional parameters for caller
    func_options_prep_result=$func_run_hooks_result
}
1669 1670


1671 1672 1673 1674 1675 1676 1677
# func_parse_options [ARG]...
# ---------------------------
# The main option parsing loop.
func_hookable func_parse_options
func_parse_options ()
{
    $debug_cmd
1678

1679
    func_parse_options_result=
1680

1681 1682 1683 1684 1685
    # this just eases exit handling
    while test $# -gt 0; do
      # Defer to hook functions for initial option parsing, so they
      # get priority in the event of reusing an option name.
      func_run_hooks func_parse_options ${1+"$@"}
1686

1687 1688
      # Adjust func_parse_options positional parameters to match
      eval set dummy "$func_run_hooks_result"; shift
1689

1690 1691
      # Break out of the loop if we already parsed every option.
      test $# -gt 0 || break
1692

1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704
      _G_opt=$1
      shift
      case $_G_opt in
        --debug|-x)   debug_cmd='set -x'
                      func_echo "enabling shell trace mode"
                      $debug_cmd
                      ;;

        --no-warnings|--no-warning|--no-warn)
                      set dummy --warnings none ${1+"$@"}
                      shift
		      ;;
1705

1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764
        --warnings|--warning|-W)
                      test $# = 0 && func_missing_arg $_G_opt && break
                      case " $warning_categories $1" in
                        *" $1 "*)
                          # trailing space prevents matching last $1 above
                          func_append_uniq opt_warning_types " $1"
                          ;;
                        *all)
                          opt_warning_types=$warning_categories
                          ;;
                        *none)
                          opt_warning_types=none
                          warning_func=:
                          ;;
                        *error)
                          opt_warning_types=$warning_categories
                          warning_func=func_fatal_error
                          ;;
                        *)
                          func_fatal_error \
                             "unsupported warning category: '$1'"
                          ;;
                      esac
                      shift
                      ;;

        --verbose|-v) opt_verbose=: ;;
        --version)    func_version ;;
        -\?|-h)       func_usage ;;
        --help)       func_help ;;

	# Separate optargs to long options (plugins may need this):
	--*=*)        func_split_equals "$_G_opt"
	              set dummy "$func_split_equals_lhs" \
                          "$func_split_equals_rhs" ${1+"$@"}
                      shift
                      ;;

       # Separate optargs to short options:
        -W*)
                      func_split_short_opt "$_G_opt"
                      set dummy "$func_split_short_opt_name" \
                          "$func_split_short_opt_arg" ${1+"$@"}
                      shift
                      ;;

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

        --)           break ;;
        -*)           func_fatal_help "unrecognised option: '$_G_opt'" ;;
        *)            set dummy "$_G_opt" ${1+"$@"}; shift; break ;;
      esac
    done
1765

1766 1767 1768 1769
    # save modified positional parameters for caller
    func_quote_for_eval ${1+"$@"}
    func_parse_options_result=$func_quote_for_eval_result
}
1770 1771


1772 1773 1774 1775 1776 1777 1778 1779
# func_validate_options [ARG]...
# ------------------------------
# Perform any sanity checks on option settings and/or unconsumed
# arguments.
func_hookable func_validate_options
func_validate_options ()
{
    $debug_cmd
1780

1781 1782
    # Display all warnings if -W was not given.
    test -n "$opt_warning_types" || opt_warning_types=" $warning_categories"
1783

1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375 2376 2377 2378 2379 2380 2381 2382 2383 2384 2385 2386 2387 2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485 2486 2487 2488 2489 2490 2491 2492 2493 2494 2495 2496 2497 2498 2499 2500 2501 2502 2503 2504 2505 2506 2507 2508 2509 2510 2511 2512 2513 2514 2515 2516 2517 2518 2519 2520 2521 2522 2523 2524 2525 2526 2527 2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 2547 2548 2549 2550 2551 2552 2553 2554 2555 2556 2557 2558 2559 2560 2561 2562 2563 2564 2565 2566 2567 2568 2569 2570 2571 2572 2573 2574 2575 2576 2577 2578 2579 2580 2581 2582 2583 2584 2585 2586 2587 2588 2589 2590 2591 2592 2593 2594 2595 2596 2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633 2634 2635 2636 2637 2638 2639 2640 2641 2642 2643 2644 2645 2646 2647 2648 2649 2650 2651 2652 2653 2654 2655 2656 2657 2658 2659 2660 2661 2662 2663 2664 2665 2666 2667 2668 2669 2670 2671 2672 2673 2674 2675 2676 2677 2678 2679 2680 2681 2682 2683 2684 2685 2686 2687 2688 2689 2690 2691 2692 2693 2694 2695 2696 2697 2698 2699 2700 2701 2702 2703 2704 2705 2706 2707 2708 2709 2710 2711 2712 2713 2714 2715 2716 2717 2718 2719 2720 2721 2722 2723