File: wx-config.in

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#!/bin/sh
#
# Name:        wx-config{.in,}
# Purpose:     wx configuration search and query tool {template,}
# Author:      Ron <ron@debian.org>
# Modified by:
# Created:     8/9/2004
# Copyright:   (c) 2004 Ron <ron@debian.org>
#              Essentially a fresh start this time around, but for maximum
#              compatibility basic code was taken from, and heavy reference
#              made to, the previously unattributed wx-config from cvs.
#              All the usual suspects contributed to the dicussion that led
#              to this new work and likewise to the ideas and content in the
#              original (which was probably influenced by gtk), among them:
#              Robert Roebling, Vadim Zeitlin, Vaclav Slavik, Robin Dunn
# Licence:     wxWindows licence
############################################################################

# Extra^2 debug mode, for if things ever get really weird.
[ -z "$WXDEBUG_X" ] || set -x


# On with some basic stuff, like the ability to die gracefully,
# and to tell people what we are about.
# ------------------------------------------------------------------

# decho _message
# Output a message to stderr.
decho() { echo "$*" 1>&2; }

# Debian-specific code:
debian_specific_webview_handling() {
    # If the -dev package for webview isn't installed, make wx-config behave as
    # if webview was disabled at build time.
    if dpkg -s libwxgtk-webview3.0-gtk3-dev > /dev/null 2>&1 ; then
	BUILT_WX_LIBS='@BUILT_WX_LIBS@'
	STD_GUI_LIBS='@STD_GUI_LIBS@'
    else
	BUILT_WX_LIBS=`echo '@BUILT_WX_LIBS@'|sed 's/\<webview\>//;s/  / /'`
	STD_GUI_LIBS=`echo '@STD_GUI_LIBS@'|sed 's/\<webview\>//'`
	ldlibs_webview=
    fi
}

# usage _exitcode
# Outputs a usage message to stderr and exits with _exitcode.
# Try to keep this to a single page (ie. < 25 lines).  We can add
# alternate or interactive help targets if people want more detail.
#
# Exit codes are now subject to a more strict interpretation.
# wx-config should return 0 upon successful operation, 1 if the
# reqested operation could not be completed successfully, and 2
# if the requested operation is not supported by this version of
# wx-config.
usage()
{
    debian_specific_webview_handling
    cat 1>&2 <<EOF

 wx-config [--prefix[=DIR]] [--exec-prefix[=DIR]] [--release] [--version-full]
           [--list] [--selected-config] [--host=HOST] [--toolkit=TOOLKIT]
           [--universal[=yes|no]] [--unicode[=yes|no]] [--static[=yes|no]]
           [--debug[=yes|no]] [--version[=VERSION]] [--basename] [--cc] [--cxx]
           [--cppflags [base]] [--cxxflags [base]] [--cflags]
           [--rescomp] [--linkdeps] [--ld] [--utility=UTIL]
           [--libs [LIBS...]] [--optional-libs [LIBS...]]

    wx-config returns information about the wxWidgets libraries available on
  your system.  It may be used to retrieve the information required to build
  applications using these libraries using --cppflags, --cxxflags, --cflags,
  and --libs options. And you may query the properties of this configuration
  using --query-{host,toolkit,widgetset,chartype,debugtype,version,linkage}.

    NOTE:    Usage of --debug and --query-debugtype are only relevant if you
  have any  versions prior to 2.9 installed  and use the --version option to
  select an earlier version.

    If multiple builds of wxWidgets  are available,  you can use the options
  --prefix, --host, --toolkit, --unicode, --static, --universal or --version
  to select from them.  The  --selected-config  option shows the name of the
  current configuration and --list  shows available alternatives which match
  specified criteria.  The  --utility  option returns the correct version of
  UTIL to use with the selected build.  The  --linkdeps  option returns only
  static libraries for your makefile link rule dependencies.

    The LIBS arguments (comma or space separated) may be used to specify the
  wxWidgets libraries that  you wish to use. The "std" label may be used  to
  import all libraries that would be used by default if none were  specified
  explicitly, e.g. wx-config --libs core,base. The "all" label may  be  used
  to  import  all libraries that have been compiled which are shown  in  the
  list  below.  The  --optional-libs parameter should be followed by  a list
  of  libs that should be linked to, but only if they are available.

  Available libraries in this build are:
  $BUILT_WX_LIBS

EOF

    exit $1
}

# Unfussy people are the easiest to deal with, get them out of the way now.
[ $# -gt 0 ] || usage 1


# Contentious tools determined by configure.
EGREP="@EGREP@"


# For the people who know what they want, or think they do:
# Divide the valid arguments into functional groups for later examination,
# then parse all command line arguments completely, deferring action on
# output options until all significant input has been processed and any
# decision about delegation has been taken.

# Note early, that '-' is a complete no-no for use in option names below.
# It totally falls apart as soon as it becomes part of a variable name.
# Use '_' instead, and by the magic of it all just being bits, you'll
# be able to use --my-option or --my_option from the command line at
# your discretion.  They are synonymous as user input, but _ALWAYS_ use
# underscores for compound names in the code here, never a dash.


# The list of all options we recognise.  If it is not in here, then
# it is not something we want to handle.
# ------------------------------------------------------------------

# Options that specify a distinct library build.
#
# Note also that order in this list is significant later on, as this sets
# the precedence with which we will try to gauge the similarity of other
# configs to this one.  Options earlier in the list should be more crucial
# to match well than those that follow.  Options specified by the user will
# always take precedence and are not subject to any partial ordering here.
wxconfig_schema="host toolkit widgetset chartype debugtype flavour version linkage"

# Options that are expected to generate some output.
wxconfig_output_options="prefix exec_prefix
                         list
                         release version version_full
                         basename
                         cppflags cflags cxxflags
                         rescomp
                         rezflags
                         libs
                         optional_libs
                         linkdeps
                         cc cxx ld
                         gl_libs"

# Options that permit the user to supply hints that may affect the output.
# These options all accept arbitrary values, to interpret as they please.
wxconfig_input_options="prefix exec_prefix utility $wxconfig_schema"

# Input options that accept only a yes or no argument.
#
# Notice that this includes "debug" but it is done only for compatibility, this
# options (i.e. --debug[=yes] or --debug=no) is completely ignored as there is
# no distinction between debug and release builds in wx any more
wxconfig_yesno_options="universal unicode debug static"

# Boolean options that do something or not.
wxconfig_flag_options="$wxconfig_yesno_options selected_config no_rpath inplace"



# Some simple sugar coating to keep things more readable below.
# --------------------------------------------------------------

# option_name _string
# Returns NAME if _string is of the form: --NAME[=...]
option_name()
{
    echo "$1" | sed -e 's/^--//' -e 's/=.*//' -e s/-/_/g
}

# option_value _string
# Returns FOO if _string is of the form: --option=FOO
option_value()
{
    echo "$1" | sed 's/^[^=]*=//'
}

# match_field _value _list
# Returns true if _value is a field in _list
match_field()
{
    _match_field_match="$1"
    shift
    for _match_field_i do
        [ "x$_match_field_i" != "x$_match_field_match" ] || return 0
    done
    false
}

# remove_field _value _list
# Returns _list minus any field(s) that match _value.
remove_field()
{
    _remf_value="$1"
    _remf_list=''
    shift
    if [ -n "$_remf_value" ]; then
        for _remf_item do
            [ "x$_remf_item" = "x$_remf_value" ] ||
                _remf_list="${_remf_list:+$_remf_list }$_remf_item"
        done
        echo "$_remf_list"
    else
        echo $*
    fi
}

# validate_arg _domain _set _name _value
# Boilerplate to validate an argument and initialise a pseudo-hash.
# This one is almost reduction into absurdity, and perhaps makes the
# precise action of the argument parser below just a little more
# obscure, but oh so neat and compact to use for multiple option
# groups.  It expands to replace repetitive clauses of the form:
#
#        i="$(option_name $arg)"
#        if match_field "$i" $wxconfig_input_options; then
#            input_options="${input_options:+$input_options }$i"
#            eval "input_option_$i=$(option_value $arg)"
#            continue
#        fi
#
# with the one liners you see on the page below.
validate_arg()
{
    if match_field "$3" `eval echo \"\\\$$1_$2_options\"`; then
        eval "$2_options=\"\${$2_options:+\$$2_options }$3\""
        eval "$2_option_$3=\"$4\""
        return
    fi
    false
}

# check_yesno_option _ynoption _option _yesval _noval
# This one might be made more generic and/or incorporated into
# validate_arg above at some later stage, but right now we just
# condition any specialist options into a generic one for later
# handling.  Once they are sanity checked there is no difference
# in any case.
check_yesno_option()
{
    eval "case \${yesno_option_$1-\${flag_option_$1-unset}} in
            unset)                          ;;
            y*|Y*)  input_option_$2=\"$3\"  ;;
            n*|N*)  input_option_$2=\"$4\"  ;;
            *)
                decho
                decho \" *** Error: Invalid request '--$1=\$yesno_option_$1'\"
                decho \" Valid arguments for --$1 are: [ yes, no ]\"
                decho
                exit 1
                ;;
         esac"
}


MAC_FRAMEWORK=
MAC_FRAMEWORK_PREFIX=


# Now we are ready to find out what the user wants from us.
# --------------------------------------------------------------

# With just a little more complexity here we could have shortest
# unique string matching for options, but that is probably overkill
# today, so let's just get the job done.
#
# The important thing now then is that we simply read all input from
# the user and don't try to act prematurely on partial information.
# --help or an illegal argument are the only shortcuts out of here
# at this point, otherwise, it's time to just shut up and listen for
# a moment.

for arg do
  case "$arg" in
    --help|-h)
        usage
        ;;

    --*=*)
        _name=`option_name $arg`
        _value=`option_value $arg`
        if validate_arg wxconfig input "$_name" "$_value" ||
           validate_arg wxconfig yesno "$_name" "$_value"
        then
            continue
        fi
        ;;

    --query-*)
        _name=`echo $arg | sed 's/^--query-//'`
        if match_field "$_name" $wxconfig_schema
        then
            query_options="${query_options:+$query_options }$_name"
            continue
        fi
        ;;

    --*)
        _name=`option_name $arg`
        if validate_arg wxconfig flag   "$_name" yes ||
           validate_arg wxconfig output "$_name" yes
        then
            continue
        fi
        ;;

    *)
        # We validate the parameters later ...

        if [ "$_name" = "cxxflags" ] || [ "$_name" = "cppflags" ] || [ "$_name" = "cflags" ]; then
            cxx_parameters="${cxx_parameters:+$cxx_parameters }$arg"
        elif [ "$_name" = "libs" ]; then
            libs_parameters="${libs_parameters:+$libs_parameters }$arg"
        elif [ "$_name" = "optional_libs" ]; then
            optional_libs_parameters="${optional_libs_parameters:+$optional_libs_parameters }$arg"
        else
            # normally anything here are unattached arguments and signify an
            # error but for compatibility with the 2.8 wx-config and,
            # especially, configure scripts generated using 2.8 wxwin.m4 and
            # hence doing `wx-config --version base,std`, we ignore anything
            # following this option, just as 2.8 version used to do
            if [ "$_name" != "version" ]; then
                input_parameters="${input_parameters:+$input_parameters }$arg"
            fi
        fi
        continue
        ;;
  esac
  decho "  *** Error: Unrecognised option: '$arg'"
  decho "Use wx-config --help for information on command line options."
  exit 2
done

# validate_arg only checks and decomposes form.  Sanity check the yes/no
# options now too and push their respective mask values into place.

check_yesno_option universal widgetset univ
check_yesno_option unicode chartype unicode ansi
check_yesno_option static linkage static
check_yesno_option debug debugtype debug release

# Dump everything we just read in debug mode.
if [ -n "$WXDEBUG" ]; then

    decho
    decho "  input parameters          = $input_parameters"
    decho "  libs parameters           = $libs_parameters"
    decho "  optional-libs parameters  = $optional_libs_parameters"
    decho "  input options     = $input_options"
    for i in $input_options; do
        decho "    $i = `eval echo \"\\\$input_option_$i\"`"
    done
    decho "  yes/no options    = $yesno_options"
    for y in $yesno_options; do
        decho "    $y = `eval echo \"\\\$yesno_option_$y\"`"
    done
    decho "  flag options      = $flag_options"
    for f in $flag_options; do
        decho "    $f = `eval echo \"\\\$flag_option_$f\"`"
    done
    decho "  output options    = $output_options"
    for o in $output_options; do
        decho "    $o = `eval echo \"\\\$output_option_$o\"`"
    done
    decho "  query options     = $query_options"

fi



# Everything came in as a legal argument then, let's put some of
# the pieces together with a little self knowledge to see what
# we should do next.
# --------------------------------------------------------------

# get_mask [ _hash ]
# Construct a config filename mask from a pseudo-hash of component variables.
# The optional argument is the prefix of the hash to use.  If not specified
# this will return a mask derived from the command line options that were used.
get_mask()
{
    [ $# -gt 0 ] || set m

    case "$m_ourversion" in
        2.9)
            is29orlater=1
            ;;
        2.*)
            # there is no 2.10 so currently everything else is <= 2.8
            is29orlater=0
            ;;
        *)
            # 3.x and later "is29orlater" too
            is29orlater=1
            ;;
    esac

    # use 2.8 or 2.9 version of the mask: the difference is the presence of
    # debug type in pre-2.9
    if [ $is29orlater = 1 ]; then
        eval echo "\${$1_host:+\$$1_host-}\${$1_toolkit}\${$1_widgetset}-\${$1_chartype}\${$1_linkage:+-\$$1_linkage}-\${$1_version}\${$1_flavour}"
    else
        eval echo "\${$1_host:+\$$1_host-}\${$1_toolkit}\${$1_widgetset}-\${$1_chartype}-\${$1_debugtype}\${$1_linkage:+-\$$1_linkage}-\${$1_version}\${$1_flavour}"
    fi
}

# Returns true if this script is for a cross compiled config.
is_cross()  { [ "x@cross_compiling@" = "xyes" ]; }


# Determine the base directories we require.
prefix=${input_option_prefix-${this_prefix:-@prefix@}}
exec_prefix=${input_option_exec_prefix-${input_option_prefix-${this_exec_prefix:-@exec_prefix@}}}
wxconfdir="@libdir@/wx/config"

installed_configs=`cd "$wxconfdir" 2> /dev/null && ls | grep -v "^inplace-"`

is_cross && target="@host_alias@"

# Define a pseudo-hash to contain the specification of this wx-config
# instance and its associated library.
this_host="${target:+${target}}"
this_toolkit="@TOOLKIT_DIR@@TOOLKIT_VERSION@"
this_widgetset="@WIDGET_SET@"
this_chartype="@WX_CHARTYPE@"
this_debugtype="release"
this_flavour="@WX_FLAVOUR@"
this_version="@WX_RELEASE@"
this_linkage=`[ "x@SHARED@" = "x1" ] || echo 'static'`


# Extract the user specification from the options parsed.
m_host=${input_option_host:+"${input_option_host}-?"}
m_host=${m_host:-$this_host}
m_toolkit=${input_option_toolkit:-'[^-]+'}
m_widgetset=${input_option_widgetset-'(univ)?'}
m_chartype=${input_option_chartype:-'(unicode|ansi)'}
m_debugtype=${input_option_debugtype:-'(debug|release)'}
m_flavour=${input_option_flavour:+-$input_option_flavour}
m_flavour=${m_flavour:-${input_option_flavour-'(-[^-]+)?'}}
m_version=${input_option_version:-'[0-9]+\.[0-9]+'}
m_linkage=${input_option_linkage-'?(static)?'}

# Test whether or not --version has been specified
#
# This must be done after getting the input options so get_mask works correctly
# since it is version-dependent

if [ -z "$input_option_version" ]; then
    m_ourversion="2.9"
else
    m_ourversion=$m_version
fi

this_config=`get_mask this`

configmask="^`get_mask`$"


# Dump the user specification in debug mode.
if [ -n "$WXDEBUG" ]; then

    decho
    decho "  prefix       = '$prefix'"
    decho "  exec_prefix  = '$exec_prefix'"
    decho "  wxconfdir    = '$wxconfdir'"

    decho "  m_host       = '$m_host'"
    decho "  m_toolkit    = '$m_toolkit'"
    decho "  m_widgetset  = '$m_widgetset'"
    decho "  m_chartype   = '$m_chartype'"
    decho "  m_debugtype  = '$m_debugtype'"
    decho "  m_flavour    = '$m_flavour'"
    decho "  m_version    = '$m_version'"
    decho "  m_linkage    = '$m_linkage'"

    decho "  configmask   = '$configmask'"
    decho "  this config  = '$this_config'"
    decho

fi



# From here on, we'll need to be able to figure out a delegation target.
# -----------------------------------------------------------------------

# The rules for delegation are:
#
# 1. If the specification is so general that it matches the default config
#    (ie. this one on a first pass), then the default config will be used
#    even if other installed libs would also match the spec.
#
# 2. If the default config does not match, find a list of all installed
#    libraries that do match.
#       a. If that list is empty, the specification is incompatible
#          with any installed lib.  Warn and abort.
#       b. If that list contains exactly one candidate.  Delegate to
#          that candidate.
#       c. If the list contains multiple candidates, pass on to step 3.
#
# 3. Attempt to discriminate among rival candidates by their similarity
#    to the default configuration (ie. this one).  If we can find a unique
#    candidate in this way, delegate to it.  If not, present a list of
#    options to the user and request that they disambiguate it with one or
#    more additional fields.
#
#    To refine the specified pattern, we specialise each unbound field
#    using the default value from this config file.  If that results in
#    no matches, we unbind it again and try the next field.  If it still
#    results in multiple matches we try binding the next field as well
#    until a unique or null result again occurs.
#
# A more general way to look at this, is the feature specifiers are all
# modifiers of the wx-config you are calling.  If you supply none, the
# default for that build configuration will be used.  If you supply one
# or more that the default build cannot satisfy, it will try to find the
# config most like itself with the desired feature(s) enabled.
# The features configured into the first wx-config called will be taken
# as implicitly specified if it is necessary to disambiguate likely
# candidates from the information that was explicitly provided.


# But first, more sugar to keep what follows clear and legible.
# --------------------------------------------------------------

# find_eligible_delegates _mask
# Outputs all the config files installed which match the
# (extended regex) _mask passed as an argument.
find_eligible_delegates() { echo "$installed_configs" | $EGREP "$1" 2> /dev/null; }

# user_mask_fits _config
# Returns true if the string _config satisfies the user specified mask.
user_mask_fits()          { echo "$1" | $EGREP "$configmask" > /dev/null 2>&1; }

# count_fields _word
# Returns the number of IFS split fields in _word
count_fields()      { return $#; }

# count_delegates _mask
# Return the number of eligible config files that match _mask
count_delegates()   { count_fields `find_eligible_delegates $1`; }

# is_set _variablename
# Returns true if $_variablename is initialised.
is_set()            { [ "x`eval echo \"\\\${$1-unset}\"`" != "xunset" ]; }

# not _cmd _args...
# true iff _cmd is false
not()               { if "$@"; then false; else true; fi; }

# do_find_best_delegate _unbound-options
# The real worker part of find_best_delegate below.  Recurses though all
# unbound options binding them one at a time to the default derived from
# this file until a unique match is made or no alternatives remain that
# may be sensibly guessed at.  It will preferentially bind the unspecified
# options in the order they are listed in wxconfig_schema.  Using this
# partial ordering it should find the first match with the most significant
# similarity to this file that unambiguously meets the user specification.
# If such a match exists it will be output to stdout.
#
# Be careful if you modify this function.  If the pruning logic is rendered
# inoperative it will simply recurse over every permutation in the search
# space, which may still appear to work, but add a couple more options (or
# explicitly specify a few less) and you may not live long enough to learn
# the result.  WXDEBUG=findprogress is your friend here, it will show you
# how many nodes get searched before a result.  If you start seeing
# increases in that number for the same input, check your work.
# Raising the number of discriminating options from 6 to 8 raised the worst
# case time for this to run (without pruning) from 3 to nearly 15 seconds
# and its downhill fast from here if we have to ride that boat.
# Early pruning still gets that down to under half a second (up from about
# .25), so we have some breathing space yet before a different search method
# will be called for, but let's not squander it.
do_find_best_delegate()
{
  (
    if [ "x$WXDEBUG" = "xverbose" ]; then
        _fbd_indent="${_fbd_indent}. "
        decho "  $_fbd_indent---> unbound options: $*"
    fi

    for i do

        if [ "x$WXDEBUG" = "xverbose" ]; then
            decho "  ${_fbd_indent}binding '$i' with '`remove_field $i $*`' still free"
            [ -z "$_pruned" ] || decho "  ${_fbd_indent}  --- pruned: $_pruned ---"
        fi

        if (
            eval m_$i=\$this_$i
            _mask="^`get_mask`$"

            if [ "x$WXDEBUG" = "xverbose" ]; then
                decho "  ${_fbd_indent}  checking: $_mask"
                count_delegates "$_mask"
                decho "  $_fbd_indent  $? eligible delegates"
                for d in `find_eligible_delegates "$_mask"`; do
                    decho "  ${_fbd_indent}    $d"
                done
            fi

            count_delegates "$_mask"
            _still_eligible=$?

            if [ $_still_eligible -eq 1 ]; then
                echo `find_eligible_delegates "$_mask"`
                return
            fi

            [ "x$WXDEBUG" != "xfindprogress" ] || printf "." 1>&2

            [ $_still_eligible -gt 1 ] && [ $# -gt 1 ] &&
                do_find_best_delegate `remove_field $i $*`
           )
        then

            return

        elif [ $# -gt 1 ]; then

            if [ "x$WXDEBUG" = "xverbose" ]; then
                decho "  ${_fbd_indent}pruning: $i"
                _pruned="${_pruned:+$_pruned }$i"
            fi
            set `remove_field $i $*`

        fi

    done
    false
  )
}

# find_best_delegate
# A simple wrapper around do_find_best_delegate that first determines
# the unbound options (ie. the ones that the user did not explicitly
# declare a preference for on the command line)
find_best_delegate()
{
    for _fbdi in $wxconfig_schema; do
        is_set input_option_$_fbdi ||
            _unbound_options="${_unbound_options:+$_unbound_options }$_fbdi"
    done
    do_find_best_delegate $_unbound_options
}


# Legacy wx-config helpers.
# -------------------------

# get_legacy_mask
# Returns a mask in the format used by wx2.4.
get_legacy_mask()
{
    [ $# -gt 0 ] || set m
    eval [ "x\${$1_chartype}" != "xunicode" ] || _unicode_flag=u
    eval echo "wx\${$1_toolkit}${_unicode_flag}-\${$1_version}\${$1_host}-config"
}

# find_legacy_configs
# Returns a list of configs installed by wx2.4 releases.
find_legacy_configs()
{
  (
    cd "$prefix/bin" &&
      {
        ls wx*-2.4-config | grep -v ^wxbase
        ls wx*-2.4-config | grep ^wxbase
      }
  ) 2> /dev/null
}

# find_best_legacy_config
# Returns the best legacy config for a given specification.
# This assumes no matching new style config has been found.
find_best_legacy_config()
{
    _legacy_configs=`find_legacy_configs`
    if [ -n "$_legacy_configs" ]; then
        _legacy_mask=`get_legacy_mask`
        for d in $_legacy_configs; do
            if echo $d | $EGREP $_legacy_mask > /dev/null 2>&1 ; then
                echo "$d"
                return
            fi
        done
    fi
    false
}



# The only action we can perform authoritatively prior to delegation
# is to list all the possible delegates.
# --------------------------------------------------------------

config_spec="$0 $*"
[ -z "$WXDEBUG" ] || config_spec=$configmask

# Next chance for another satisfied customer then
#
# If we want to get really polished here we can do plural checking,
# but we should probably leave that until the day we gettextise it.
if [ -n "$output_option_list" ]; then

    _remains_in_prefix=$installed_configs
    _delegates=`find_eligible_delegates $configmask`
    _best_delegate=`find_best_delegate`

    if [ "x$WXDEBUG" = "xverbose" ]; then
        decho
        decho " all      = $_remains_in_prefix"
        decho " matching = $_delegates"
        decho " best     = $_best_delegate"
        decho " this     = $this_config"
    fi

    for d in $_delegates; do
        _remains_in_prefix=`remove_field $d $_remains_in_prefix`
    done

    echo
    echo "    Default config is $this_config"
    echo

    if user_mask_fits "$this_config" ; then

        echo "  Default config ${this_exec_prefix+in $this_exec_prefix }will be used for output"

        if match_field "$this_config" $_delegates ; then
            _delegates=`remove_field $this_config $_delegates`
        else
            echo "  though it is not installed in: $prefix"
            if [ -n "$_best_delegate" ] && [ "x$_best_delegate" != "x$this_config" ]; then
                echo
                echo "  Best alternate in $prefix:"
                echo "    $_best_delegate"
            fi
        fi

    elif [ -n "$_best_delegate" ]; then

        echo "  Specification best match: $_best_delegate"

    elif [ -z "$_delegates" ]; then

        _last_chance=`find_best_legacy_config`
        if [ -n "$_last_chance" ]; then

            echo "  Specification matches legacy config: $_last_chance"

        else

            cat <<-EOF
          No config found to match: $config_spec
          in $wxconfdir

          Please install the desired library build, or specify a different
          prefix where it may be found.  If the library is not installed
          you may call its wx-config directly by specifying its full path.

EOF

        fi

    else
        echo " Specification was ambiguous.  Use additional feature options"
        echo " to choose between alternate matches."
    fi

    _delegates=`remove_field "$_best_delegate" $_delegates`

    if [ -n "$_delegates" ]; then
        echo
        echo "  Alternate matches:"
        for d in $_delegates; do
            echo "    $d"
        done
    fi
    if [ -n "$_remains_in_prefix" ]; then
        echo
        echo "  Also available in $prefix:"
        for d in $_remains_in_prefix; do
            echo "    $d"
        done
    fi

    _legacy_configs=`find_legacy_configs`
    if [ -n "$_legacy_configs" ]; then
        echo
        echo "  Legacy configs available in $prefix:"
        for d in $_legacy_configs; do
            echo "    $d" | sed 's/-config$//'
        done
    fi

    echo
    exit
fi



# ... so if that wasn't what they wanted, then we need to know for
# certain, can this config satisfy the user specification?
# --------------------------------------------------------------

if not user_mask_fits "$this_config" ; then

    # No?  Then let's see if it knows anybody who can.
    # But first, just be sure someone hasn't typo'd us into a loop.
    # In present day wx, correct delegation should never need more
    # than one hop so this is trivial to detect.

    if [ -n "$WXCONFIG_DELEGATED" ]; then
        decho
        decho " *** Error: Bad config delegation"
        decho
        decho " to: $0"
        decho " ($this_config) cannot satisfy:"
        decho " $config_spec"
        decho " Someone has been terribly careless."
        decho
        exit 1
    fi

    count_delegates "$configmask"
    _numdelegates=$?

    if [ -n "$WXDEBUG" ]; then
        decho "  must delegate to an alternate config"
        decho "  potential delegates ($_numdelegates):"
        for i in `find_eligible_delegates "$configmask"`; do
            decho "    $i"
        done
    fi

    if [ $_numdelegates -eq 0 ]; then

        _last_chance=`find_best_legacy_config`
        if [ -n "$_last_chance" ]; then

            for arg do
                case "$arg" in
                    --prefix*|--exec-prefix*|               \
                    --version|--release|--basename|         \
                    --static|--libs|--gl_libs|              \
                    --cppflags|--cflags|--cxxflags|         \
                    --cc|--cxx|--ld|                        \
                    --rezflags|--inplace)
                        _legacy_args="$_legacy_args $arg"
                        ;;

                    --static|--static=y*|--static=Y*)
                        _legacy_args="$_legacy_args --static"
                        ;;
                esac
            done

            if [ -n "$WXDEBUG" ]; then
                decho "  found a suitable legacy delegate: $_last_chance"
                decho "--> $prefix/bin/$_last_chance $_legacy_args"
            fi

            WXCONFIG_DELEGATED=yes
            export WXCONFIG_DELEGATED
            $prefix/bin/$_last_chance $_legacy_args
            exit

        else

            cat 1>&2 <<-EOF

          Warning: No config found to match: $config_spec
                   in $wxconfdir
          If you require this configuration, please install the desired
          library build.  If this is part of an automated configuration
          test and no other errors occur, you may safely ignore it.
          You may use wx-config --list to see all configs available in
          the default prefix.

EOF

            # PIPEDREAM: from here we are actually just a teensy step
            # from simply building the missing config for the user
            # on the fly if this is an in tree wx-config.

            exit 1
        fi
    fi

    if [ $_numdelegates -gt 1 ]; then

        [ -z "$WXDEBUG" ] || decho "  must prune the list of eligible delegates"

        best_delegate=`find_best_delegate`

        if [ -n "$best_delegate" ]; then

            if [ -n "$WXDEBUG" ]; then
                decho "  found a suitable delegate: $best_delegate"
                decho "--> $wxconfdir/$best_delegate $*"
            fi

            WXCONFIG_DELEGATED=yes
            export WXCONFIG_DELEGATED
            $wxconfdir/$best_delegate $*
            exit
        fi

        decho
        decho " *** Error: Specification is ambiguous"
        decho "            as $config_spec"
        decho " Use additional feature options to choose between:"
        for i in `find_eligible_delegates "$configmask"`; do
            decho "  $i"
        done
        decho

        exit 1
    fi

    if [ -n "$WXDEBUG" ]; then
        decho "  using the only suitable delegate"
        decho "--> $wxconfdir/`find_eligible_delegates $configmask` $*"
    fi

    WXCONFIG_DELEGATED=yes
    export WXCONFIG_DELEGATED
    $wxconfdir/`find_eligible_delegates $configmask` $*
    exit
fi



# If we are still here, then from now on we are responsible for
# all the user's needs.  Time to rustle up some output for them.
# --------------------------------------------------------------

[ -z "$WXDEBUG" ] || decho "  using this config"

# If the user supplied a prefix, and the in tree config did not
# delegate out to anything in that prefix, then reset the build
# tree prefix to provide the correct output for using this
# uninstalled wx build.  Or put more simply:
prefix=${this_prefix-$prefix}
exec_prefix=${this_exec_prefix-$exec_prefix}

includedir="@includedir@"
libdir="@libdir@"
bindir="@bindir@"

# Trivial queries we can answer now.
[ -z "$output_option_prefix"        ] || echo $prefix
[ -z "$output_option_exec_prefix"   ] || echo $exec_prefix
[ -z "$output_option_release"       ] || echo "@WX_RELEASE@"
[ -z "$output_option_version"       ] || echo "@WX_VERSION@"
[ -z "$output_option_version_full"  ] || echo "@WX_SUBVERSION@"
[ -z "$output_option_basename"      ] || echo "@WX_LIBRARY_BASENAME_GUI@"
[ -z "$output_option_cc"            ] || echo "@CC@"
[ -z "$output_option_cxx"           ] || echo "@CXX@"
[ -z "$output_option_ld"            ] || echo "@CXX@ -o"
[ -z "$flag_option_selected_config" ] || echo "$this_config"

for q in $query_options; do
    eval echo "\$this_$q"
done

# --rezflags is deprecated and disabled (2005/11/29)
if [ -n "$output_option_rezflags" ]; then
    echo "@true"
    decho "Warning: --rezflags, along with Mac OS classic resource building" \
          "is deprecated.  You should remove this from your Makefile and" \
          "build .app bundles instead."
fi


# The rest are going to need a little more work.
# --------------------------------------------------------------

is_monolithic() { [ "x@MONOLITHIC@" = "x1" ]; }
is_static()     { [ -n "$this_linkage" ]; }
is_installed()  { [ -z "$this_prefix" ]; }


# Is the user after a support utility?
# If this is a cross build, we need to find and return a suitable
# native utility for the job, so we search:
#
#   1. local build dir (for native uninstalled builds only).
#   2. (optional) user supplied prefix.
#   3. configured install prefix.
#   4. environment $PATH.
#
# and if such a thing still cannot be found, exit signalling an error.
if [ -n "$input_option_utility" ]; then

    # This is dumb, in tree binaries should be in a standard location
    # like the libs, but work with what we've got for now.
    is_cross || _util="$exec_prefix/utils/$input_option_utility/$input_option_utility"

    if not is_installed && [ -x "$_util" ]; then
        is_static || _preload="eval LD_LIBRARY_PATH=$exec_prefix/lib"
        echo $_preload $_util
        exit
    fi

    IFS=':'
    _user_prefix=${input_option_exec_prefix:-$input_option_prefix}

    for _util in "${input_option_utility}-@WX_RELEASE@@WX_FLAVOUR@" \
                 "${input_option_utility}-@WX_RELEASE@"             \
                 "${input_option_utility}"
    do
        for p in ${_user_prefix:+$_user_prefix/bin} $bindir $PATH; do

            [ -z "$WXDEBUG" ] || decho "  checking for: '$p/$_util'"

            if [ -x "$p/$_util" ]; then
                echo "$p/$_util"
                exit
            fi

        done
    done
    exit 1

fi


# Still here?  Then get the options together for building an app.
# ----------------------------------------------------------------

# Additional configuration for individual library components.
ldflags_gl="@LDFLAGS_GL@"

ldlibs_base="@WXCONFIG_LIBS@"
ldlibs_core="@EXTRALIBS_GUI@"
ldlibs_gl="@OPENGL_LIBS@"
ldlibs_html="@EXTRALIBS_HTML@"
ldlibs_xml="@EXTRALIBS_XML@"
ldlibs_adv="@EXTRALIBS_SDL@"
ldlibs_stc="@EXTRALIBS_STC@"
ldlibs_webview="@EXTRALIBS_WEBVIEW@"


# Order the libraries passed to us correctly for static linking.
#
# While the libraries order doesn't matter when linking dynamically, we must
# put the libraries depending on other libraries in front of their dependencies
# when linking statically or the dependencies wouldn't be resolved by the
# standard UNIX linkers.
order_libs()
{
    if is_static; then
        for lib do
            # Distinguish between the libraries that may need to be moved to
            # the end of the list (because other ones may depend on them) and
            # those that can be output immediately because no other libraries
            # depend on them.
            case "$lib" in
                base|core|html|xml|adv) eval "use_$lib=1" ;;
                *)                      libs="$libs $lib" ;;
            esac
        done

        # Add the libraries that we postponed adding above.
        # Order of the checks here is important.
        [ -z "$use_html" ] || libs="$libs html"
        [ -z "$use_adv" ] || libs="$libs adv"
        [ -z "$use_core" ] || libs="$libs core"
        [ -z "$use_xml" ] || libs="$libs xml"
        [ -z "$use_base" ] || libs="$libs base"
    else
        # No need to order them.
        libs="$@"
    fi

    echo $libs
}

# lib_flags_for _liblist
# This function returns a list of flags suitable to return with the
# output of --libs for all of the libraries in _liblist.  You can
# add support for a new library by adding an entry for it in the
# psuedo-hashes above if it requires additional linker options.
lib_flags_for()
{
    [ -z "$WXDEBUG" ] || decho "  fetching lib flags for: '$*'"

    _all_ldflags=''
    _all_libs=''
    _wxlibs=''

    is_cross && _target="-${target}"

    for lib do

        # We evidently can't trust people not to duplicate things in
        # configure, or to keep them in any sort of sane order overall,
        # so only add unique new fields here even if it takes us a while.
        # In the case of libs, we bubble any duplicates to the end,
        # because if multiple libs require it, static linking at least
        # will require it to come after all of them.  So long as local
        # order is ok in configure then we should always be able to
        # massage a correct result here like this.
        #
        # FIXME: ldlibs_core is totally bogus.  Fix the duplication
        # there independently of this.  This covers for it, but we
        # want to do this anyway because some libs may share common
        # deps without a common ancestor in wx.  This is not a licence
        # for sloppy work elsewhere though and @GUI_TK_LIBRARY should
        # be fixed.

        for f in `eval echo \"\\\$ldflags_$lib\"`; do
            match_field "$f" $_all_ldflags || _all_ldflags="$_all_ldflags $f"
        done

        if match_field "$lib" @STD_BASE_LIBS@ ; then
            _libname="@WX_LIBRARY_BASENAME_NOGUI@"
        else
            _libname="@WX_LIBRARY_BASENAME_GUI@"
        fi
        [ $lib = base ] || _libname="${_libname}_$lib"
        _libname="${_libname}-@WX_RELEASE@$_target"

        if is_static; then
            _wxlibs="$_wxlibs ${libdir}/lib${_libname}.a"
            for f in `eval echo \"\\\$ldlibs_$lib\"`; do

                # Only propagate duplicate -libraries to their latest
                # possible position.  Do not eliminate any other
                # duplicates that might occur.  They should be fixed
                # in configure long before they get here.
                # This started as a workaround for Mac -framework,
                # but it seems like a better policy in general, which
                # will let the more heinous bugs in configure shake out.
                # We should maybe filter *.a here too, but not unless
                # we have to.
                case "$f" in
                  -l*)  _all_libs="`remove_field $f $_all_libs` $f"     ;;
                    *)  _all_libs="$_all_libs $f"                       ;;
                esac

            done
        else
            _wxlibs="$_wxlibs -l${_libname}"
        fi

    done

    if [ -n "$WXDEBUG" ]; then
        decho "  retrieved: ldflags = $_all_ldflags"
        decho "             wxlibs  = $_wxlibs"
        decho "             alllibs = $_all_libs"
    fi

    echo $_all_ldflags $_wxlibs $_all_libs
}

# this is the strict subset of the above function which returns only the
# (static) libraries themselves: this is used for linkdeps output which should
# output the list of libraries the main program should depend on
#
# of course, this duplication is bad but I'll leave to somebody else the care
# of refactoring this as I don't see any way to do it - VZ.

# This (and the other cruft to support it) should be removed with
# reference to the FIXME above when configure stops piping us a slurry
# of options that need to be decomposed again for most practical uses - RL.
link_deps_for()
{
    _wxlibs=''

    is_cross && _target="-${target}"

    for lib do
        if match_field "$lib" @STD_BASE_LIBS@ ; then
            _libname="@WX_LIBRARY_BASENAME_NOGUI@"
        else
            _libname="@WX_LIBRARY_BASENAME_GUI@"
        fi
        [ $lib = base ] || _libname="${_libname}_$lib"
        _libname="${_libname}-@WX_RELEASE@$_target"

        _wxlibs="$_wxlibs ${libdir}/lib${_libname}.a"
    done

    echo $_wxlibs
}

# Sanity check the list of libs the user provided us, if any.
# --------------------------------------------------------------

wx_libs=`echo "$libs_parameters" | tr ',' ' '`
wx_optional_libs=`echo "$optional_libs_parameters" | tr ',' ' '`

debian_specific_webview_handling

# Add the --optional-libs, if they've been compiled and aren't already added
for i in $wx_optional_libs; do
    if match_field $i $BUILT_WX_LIBS; then
        if not match_field $i $wx_libs; then
            wx_libs="${wx_libs:+$wx_libs }$i"
        fi
    fi
done

[ -z "$WXDEBUG" ] || decho "  user supplied libs: '$wx_libs'"

# Assume we are using the GUI, unless --libs was specified with no GUI libs
using_gui=yes

if is_monolithic; then

    # Only add additional info if --libs was specified and not just --optional-libs
    if [ -n "$output_option_libs" ]; then
        # The only library we need to add when using monolithic build is the gl
        # one as all the others are already included into the main one.
        if match_field gl $wx_libs; then
            wx_libs=gl
        else
            wx_libs=
        fi

        wx_libs="@WXCONFIG_LDFLAGS_GUI@ `lib_flags_for $wx_libs`"

        # We still need the core lib deps for a static build though
        if is_static; then
            link_deps="${libdir}/libwx_@TOOLCHAIN_NAME@.a"
            wx_libs="$wx_libs $link_deps $ldlibs_core $ldlibs_base"
        else
            wx_libs="$wx_libs -lwx_@TOOLCHAIN_NAME@"
        fi
    fi
else    # MONOLITHIC = 0

    # Import core libs by default, expand std if specified, or add base if omitted.
    if [ -n "$output_option_libs" ] && [ -z "$libs_parameters" ]; then
        wx_libs="$STD_GUI_LIBS @STD_BASE_LIBS@"
    elif match_field all $wx_libs; then
        wx_libs="$BUILT_WX_LIBS"
    elif match_field std $wx_libs; then
        # Bubble any libs that were already specified to the end
        # of the list and ensure static linking order is retained.
        wx_libs=`remove_field std $wx_libs`
        for i in $STD_GUI_LIBS @STD_BASE_LIBS@; do
            wx_libs="`remove_field $i $wx_libs` $i"
        done
    elif not match_field base $wx_libs ; then
        # Only add base if --libs was specified and not just --optional-libs
        if [ -n "$output_option_libs" ]; then
            wx_libs="$wx_libs base"
        fi
    fi

    if [ -n "$output_option_libs" ]; then
        using_gui=no
        for i in $wx_libs ; do
            if match_field "$i" $STD_GUI_LIBS; then
                _guildflags="@WXCONFIG_LDFLAGS_GUI@"
                using_gui=yes
                break
            fi
            match_field "$i" @STD_BASE_LIBS@ || using_gui=yes
        done
    fi

    if is_static; then
        link_deps=`link_deps_for $wx_libs`
    fi
    wx_libs=`order_libs $wx_libs`
    wx_libs="$_guildflags `lib_flags_for $wx_libs`"
fi


# If they explicitly set "--cxx(pp)flags base" then they don't want the GUI
if [ "$cxx_parameters" = "base" ]; then
    using_gui=no
fi


if [ -n "$WXDEBUG" ]; then
    decho
    decho "  using libs: '$wx_libs'"
    decho "  using_gui = $using_gui"
    decho
fi


# Endgame.  Nothing left to discover now.
# --------------------------------------------------------------

[ "$using_gui" = "yes" ] || _gui_cppflags="-DwxUSE_GUI=0"

if is_installed; then
    _include_cppflags="-I${includedir}/wx-@WX_RELEASE@@WX_FLAVOUR@"
else
    _include_cppflags="-I${includedir}"
fi

_cppflags=`echo "-I${libdir}/wx/include/@TOOLCHAIN_FULLNAME@" $_include_cppflags "@WXCONFIG_CPPFLAGS@" $_gui_cppflags`

# now without further ado, we can answer these too.
[ -z "$output_option_cppflags" ] || echo $_cppflags
[ -z "$output_option_cflags"   ] || echo $_cppflags "@WXCONFIG_CFLAGS@"
[ -z "$output_option_cxxflags" ] || echo $_cppflags "@WXCONFIG_CXXFLAGS@"
[ -z "$output_option_gl_libs"  ] || echo `lib_flags_for gl`
[ -z "$output_option_linkdeps" ] || echo $link_deps

if [ -n "$output_option_libs" ]; then
    # if --libs [--optional-libs] then output the full linker information

    is_cross                                    &&
        [ "x$libdir" = "x/usr/${target}/lib" ]  ||
        [ "x$libdir" = "x/usr/lib" ]            ||
        _ldflags="-L$libdir"

    if [ -n "$MAC_FRAMEWORK" ]; then
	wx_libs="-framework $MAC_FRAMEWORK"
	if [ -n "$MAC_FRAMEWORK_PREFIX" ]; then
	    _ldflags="-F$MAC_FRAMEWORK_PREFIX"
	else
	    _ldflags=""
	fi
    fi

    is_installed || [ -n "$flag_option_no_rpath" ] || _rpath="@WXCONFIG_RPATH@"

    echo $_ldflags "@WXCONFIG_LDFLAGS@" $_rpath $wx_libs "@DMALLOC_LIBS@"

elif [ -n "$output_option_optional_libs" ]; then
    # if only --optional-libs then output just the libs

    echo $wx_libs
fi


# xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
#
# Beyond here reside only machine or tool specific workarounds
# that require knowlege not obtainable prior to this comment.
#
# Please.  Avoid addding things here, wx-config should avoid
# hard coding tool specific details.  Do not use things here
# as an example of other things that should be here,  These
# shouldn't be here either.  This is a place of last resort
# for interim workarounds.  I can but stress as strongly as
# the censor will allow, there are only bad examples of things
# that belong at this level of abstraction to follow.  It is
# a limbo for glitches awaiting the Next Design Repair.  Ok.
#
# With that firmly in mind, our debut dilemma is:

# Resource compilers.  An elusive term that covers some pretty
# dissimilar concepts on various platforms.  The good news is,
# each platform has only one definition of 'resource', compiled
# or not, and so we can abstract that neatly to return a platform
# specific invocation of the appropriate tool.  The bad news is,
# windres (at least) requires knowledge of the wx header files
# location(s) that cannot be predicted reliably before the call to
# wx-config is made.  Currently for all known resource compilers,
# we can simply return a command and some salient configuration
# options in response to a request for --rescomp.  So here we
# top up the options for any tools that may require information
# that was only just determined in the last few machine cycles,
# then output the necessary incantation for the platform.
#
# Most things should already be constant by the time configure
# has run.  Do not add anything here that is already known there.

if [ -n "$output_option_rescomp" ]; then

    case "@RESCOMP@" in
      *windres|wrc)
        # Note that with late model windres, we could just insert
        # _include_cppflags here, but use the old notation for now
        # as it is more universally accepted.
        if is_installed; then
            echo "@RESCOMP@ --include-dir" \
                           "${includedir}/wx-@WX_RELEASE@@WX_FLAVOUR@" \
                           "@WXCONFIG_RESFLAGS@"
        else
            echo "@RESCOMP@ --include-dir ${includedir}" \
                           "@WXCONFIG_RESFLAGS@"
        fi
        ;;

      # neither rez not emxbind have any specific needs from
      # us, so just output what was determined by configure.
      *)
        echo @RESCOMP@ @WXCONFIG_RESFLAGS@
        ;;
    esac

fi

#
# xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

# And so that's it, we're done.  Have a nice build.

exit 0