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    1 # generated automatically by aclocal 1.16.1 -*- Autoconf -*-
    2 
    3 # Copyright (C) 1996-2018 Free Software Foundation, Inc.
    4 
    5 # This file is free software; the Free Software Foundation
    6 # gives unlimited permission to copy and/or distribute it,
    7 # with or without modifications, as long as this notice is preserved.
    8 
    9 # This program is distributed in the hope that it will be useful,
   10 # but WITHOUT ANY WARRANTY, to the extent permitted by law; without
   11 # even the implied warranty of MERCHANTABILITY or FITNESS FOR A
   12 # PARTICULAR PURPOSE.
   13 
   14 m4_ifndef([AC_CONFIG_MACRO_DIRS], [m4_defun([_AM_CONFIG_MACRO_DIRS], [])m4_defun([AC_CONFIG_MACRO_DIRS], [_AM_CONFIG_MACRO_DIRS($@)])])
   15 m4_ifndef([AC_AUTOCONF_VERSION],
   16   [m4_copy([m4_PACKAGE_VERSION], [AC_AUTOCONF_VERSION])])dnl
   17 m4_if(m4_defn([AC_AUTOCONF_VERSION]), [2.69],,
   18 [m4_warning([this file was generated for autoconf 2.69.
   19 You have another version of autoconf.  It may work, but is not guaranteed to.
   20 If you have problems, you may need to regenerate the build system entirely.
   21 To do so, use the procedure documented by the package, typically 'autoreconf'.])])
   22 
   23 # pkg.m4 - Macros to locate and utilise pkg-config.   -*- Autoconf -*-
   24 # serial 11 (pkg-config-0.29.1)
   25 
   26 dnl Copyright © 2004 Scott James Remnant <scott@netsplit.com>.
   27 dnl Copyright © 2012-2015 Dan Nicholson <dbn.lists@gmail.com>
   28 dnl
   29 dnl This program is free software; you can redistribute it and/or modify
   30 dnl it under the terms of the GNU General Public License as published by
   31 dnl the Free Software Foundation; either version 2 of the License, or
   32 dnl (at your option) any later version.
   33 dnl
   34 dnl This program is distributed in the hope that it will be useful, but
   35 dnl WITHOUT ANY WARRANTY; without even the implied warranty of
   36 dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
   37 dnl General Public License for more details.
   38 dnl
   39 dnl You should have received a copy of the GNU General Public License
   40 dnl along with this program; if not, write to the Free Software
   41 dnl Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
   42 dnl 02111-1307, USA.
   43 dnl
   44 dnl As a special exception to the GNU General Public License, if you
   45 dnl distribute this file as part of a program that contains a
   46 dnl configuration script generated by Autoconf, you may include it under
   47 dnl the same distribution terms that you use for the rest of that
   48 dnl program.
   49 
   50 dnl PKG_PREREQ(MIN-VERSION)
   51 dnl -----------------------
   52 dnl Since: 0.29
   53 dnl
   54 dnl Verify that the version of the pkg-config macros are at least
   55 dnl MIN-VERSION. Unlike PKG_PROG_PKG_CONFIG, which checks the user's
   56 dnl installed version of pkg-config, this checks the developer's version
   57 dnl of pkg.m4 when generating configure.
   58 dnl
   59 dnl To ensure that this macro is defined, also add:
   60 dnl m4_ifndef([PKG_PREREQ],
   61 dnl     [m4_fatal([must install pkg-config 0.29 or later before running autoconf/autogen])])
   62 dnl
   63 dnl See the "Since" comment for each macro you use to see what version
   64 dnl of the macros you require.
   65 m4_defun([PKG_PREREQ],
   66 [m4_define([PKG_MACROS_VERSION], [0.29.1])
   67 m4_if(m4_version_compare(PKG_MACROS_VERSION, [$1]), -1,
   68     [m4_fatal([pkg.m4 version $1 or higher is required but ]PKG_MACROS_VERSION[ found])])
   69 ])dnl PKG_PREREQ
   70 
   71 dnl PKG_PROG_PKG_CONFIG([MIN-VERSION])
   72 dnl ----------------------------------
   73 dnl Since: 0.16
   74 dnl
   75 dnl Search for the pkg-config tool and set the PKG_CONFIG variable to
   76 dnl first found in the path. Checks that the version of pkg-config found
   77 dnl is at least MIN-VERSION. If MIN-VERSION is not specified, 0.9.0 is
   78 dnl used since that's the first version where most current features of
   79 dnl pkg-config existed.
   80 AC_DEFUN([PKG_PROG_PKG_CONFIG],
   81 [m4_pattern_forbid([^_?PKG_[A-Z_]+$])
   82 m4_pattern_allow([^PKG_CONFIG(_(PATH|LIBDIR|SYSROOT_DIR|ALLOW_SYSTEM_(CFLAGS|LIBS)))?$])
   83 m4_pattern_allow([^PKG_CONFIG_(DISABLE_UNINSTALLED|TOP_BUILD_DIR|DEBUG_SPEW)$])
   84 AC_ARG_VAR([PKG_CONFIG], [path to pkg-config utility])
   85 AC_ARG_VAR([PKG_CONFIG_PATH], [directories to add to pkg-config's search path])
   86 AC_ARG_VAR([PKG_CONFIG_LIBDIR], [path overriding pkg-config's built-in search path])
   87 
   88 if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then
   89 	AC_PATH_TOOL([PKG_CONFIG], [pkg-config])
   90 fi
   91 if test -n "$PKG_CONFIG"; then
   92 	_pkg_min_version=m4_default([$1], [0.9.0])
   93 	AC_MSG_CHECKING([pkg-config is at least version $_pkg_min_version])
   94 	if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then
   95 		AC_MSG_RESULT([yes])
   96 	else
   97 		AC_MSG_RESULT([no])
   98 		PKG_CONFIG=""
   99 	fi
  100 fi[]dnl
  101 ])dnl PKG_PROG_PKG_CONFIG
  102 
  103 dnl PKG_CHECK_EXISTS(MODULES, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
  104 dnl -------------------------------------------------------------------
  105 dnl Since: 0.18
  106 dnl
  107 dnl Check to see whether a particular set of modules exists. Similar to
  108 dnl PKG_CHECK_MODULES(), but does not set variables or print errors.
  109 dnl
  110 dnl Please remember that m4 expands AC_REQUIRE([PKG_PROG_PKG_CONFIG])
  111 dnl only at the first occurence in configure.ac, so if the first place
  112 dnl it's called might be skipped (such as if it is within an "if", you
  113 dnl have to call PKG_CHECK_EXISTS manually
  114 AC_DEFUN([PKG_CHECK_EXISTS],
  115 [AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
  116 if test -n "$PKG_CONFIG" && \
  117     AC_RUN_LOG([$PKG_CONFIG --exists --print-errors "$1"]); then
  118   m4_default([$2], [:])
  119 m4_ifvaln([$3], [else
  120   $3])dnl
  121 fi])
  122 
  123 dnl _PKG_CONFIG([VARIABLE], [COMMAND], [MODULES])
  124 dnl ---------------------------------------------
  125 dnl Internal wrapper calling pkg-config via PKG_CONFIG and setting
  126 dnl pkg_failed based on the result.
  127 m4_define([_PKG_CONFIG],
  128 [if test -n "$$1"; then
  129     pkg_cv_[]$1="$$1"
  130  elif test -n "$PKG_CONFIG"; then
  131     PKG_CHECK_EXISTS([$3],
  132                      [pkg_cv_[]$1=`$PKG_CONFIG --[]$2 "$3" 2>/dev/null`
  133 		      test "x$?" != "x0" && pkg_failed=yes ],
  134 		     [pkg_failed=yes])
  135  else
  136     pkg_failed=untried
  137 fi[]dnl
  138 ])dnl _PKG_CONFIG
  139 
  140 dnl _PKG_SHORT_ERRORS_SUPPORTED
  141 dnl ---------------------------
  142 dnl Internal check to see if pkg-config supports short errors.
  143 AC_DEFUN([_PKG_SHORT_ERRORS_SUPPORTED],
  144 [AC_REQUIRE([PKG_PROG_PKG_CONFIG])
  145 if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
  146         _pkg_short_errors_supported=yes
  147 else
  148         _pkg_short_errors_supported=no
  149 fi[]dnl
  150 ])dnl _PKG_SHORT_ERRORS_SUPPORTED
  151 
  152 
  153 dnl PKG_CHECK_MODULES(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND],
  154 dnl   [ACTION-IF-NOT-FOUND])
  155 dnl --------------------------------------------------------------
  156 dnl Since: 0.4.0
  157 dnl
  158 dnl Note that if there is a possibility the first call to
  159 dnl PKG_CHECK_MODULES might not happen, you should be sure to include an
  160 dnl explicit call to PKG_PROG_PKG_CONFIG in your configure.ac
  161 AC_DEFUN([PKG_CHECK_MODULES],
  162 [AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
  163 AC_ARG_VAR([$1][_CFLAGS], [C compiler flags for $1, overriding pkg-config])dnl
  164 AC_ARG_VAR([$1][_LIBS], [linker flags for $1, overriding pkg-config])dnl
  165 
  166 pkg_failed=no
  167 AC_MSG_CHECKING([for $1])
  168 
  169 _PKG_CONFIG([$1][_CFLAGS], [cflags], [$2])
  170 _PKG_CONFIG([$1][_LIBS], [libs], [$2])
  171 
  172 m4_define([_PKG_TEXT], [Alternatively, you may set the environment variables $1[]_CFLAGS
  173 and $1[]_LIBS to avoid the need to call pkg-config.
  174 See the pkg-config man page for more details.])
  175 
  176 if test $pkg_failed = yes; then
  177    	AC_MSG_RESULT([no])
  178         _PKG_SHORT_ERRORS_SUPPORTED
  179         if test $_pkg_short_errors_supported = yes; then
  180 	        $1[]_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "$2" 2>&1`
  181         else 
  182 	        $1[]_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "$2" 2>&1`
  183         fi
  184 	# Put the nasty error message in config.log where it belongs
  185 	echo "$$1[]_PKG_ERRORS" >&AS_MESSAGE_LOG_FD
  186 
  187 	m4_default([$4], [AC_MSG_ERROR(
  188 [Package requirements ($2) were not met:
  189 
  190 $$1_PKG_ERRORS
  191 
  192 Consider adjusting the PKG_CONFIG_PATH environment variable if you
  193 installed software in a non-standard prefix.
  194 
  195 _PKG_TEXT])[]dnl
  196         ])
  197 elif test $pkg_failed = untried; then
  198      	AC_MSG_RESULT([no])
  199 	m4_default([$4], [AC_MSG_FAILURE(
  200 [The pkg-config script could not be found or is too old.  Make sure it
  201 is in your PATH or set the PKG_CONFIG environment variable to the full
  202 path to pkg-config.
  203 
  204 _PKG_TEXT
  205 
  206 To get pkg-config, see <http://pkg-config.freedesktop.org/>.])[]dnl
  207         ])
  208 else
  209 	$1[]_CFLAGS=$pkg_cv_[]$1[]_CFLAGS
  210 	$1[]_LIBS=$pkg_cv_[]$1[]_LIBS
  211         AC_MSG_RESULT([yes])
  212 	$3
  213 fi[]dnl
  214 ])dnl PKG_CHECK_MODULES
  215 
  216 
  217 dnl PKG_CHECK_MODULES_STATIC(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND],
  218 dnl   [ACTION-IF-NOT-FOUND])
  219 dnl ---------------------------------------------------------------------
  220 dnl Since: 0.29
  221 dnl
  222 dnl Checks for existence of MODULES and gathers its build flags with
  223 dnl static libraries enabled. Sets VARIABLE-PREFIX_CFLAGS from --cflags
  224 dnl and VARIABLE-PREFIX_LIBS from --libs.
  225 dnl
  226 dnl Note that if there is a possibility the first call to
  227 dnl PKG_CHECK_MODULES_STATIC might not happen, you should be sure to
  228 dnl include an explicit call to PKG_PROG_PKG_CONFIG in your
  229 dnl configure.ac.
  230 AC_DEFUN([PKG_CHECK_MODULES_STATIC],
  231 [AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
  232 _save_PKG_CONFIG=$PKG_CONFIG
  233 PKG_CONFIG="$PKG_CONFIG --static"
  234 PKG_CHECK_MODULES($@)
  235 PKG_CONFIG=$_save_PKG_CONFIG[]dnl
  236 ])dnl PKG_CHECK_MODULES_STATIC
  237 
  238 
  239 dnl PKG_INSTALLDIR([DIRECTORY])
  240 dnl -------------------------
  241 dnl Since: 0.27
  242 dnl
  243 dnl Substitutes the variable pkgconfigdir as the location where a module
  244 dnl should install pkg-config .pc files. By default the directory is
  245 dnl $libdir/pkgconfig, but the default can be changed by passing
  246 dnl DIRECTORY. The user can override through the --with-pkgconfigdir
  247 dnl parameter.
  248 AC_DEFUN([PKG_INSTALLDIR],
  249 [m4_pushdef([pkg_default], [m4_default([$1], ['${libdir}/pkgconfig'])])
  250 m4_pushdef([pkg_description],
  251     [pkg-config installation directory @<:@]pkg_default[@:>@])
  252 AC_ARG_WITH([pkgconfigdir],
  253     [AS_HELP_STRING([--with-pkgconfigdir], pkg_description)],,
  254     [with_pkgconfigdir=]pkg_default)
  255 AC_SUBST([pkgconfigdir], [$with_pkgconfigdir])
  256 m4_popdef([pkg_default])
  257 m4_popdef([pkg_description])
  258 ])dnl PKG_INSTALLDIR
  259 
  260 
  261 dnl PKG_NOARCH_INSTALLDIR([DIRECTORY])
  262 dnl --------------------------------
  263 dnl Since: 0.27
  264 dnl
  265 dnl Substitutes the variable noarch_pkgconfigdir as the location where a
  266 dnl module should install arch-independent pkg-config .pc files. By
  267 dnl default the directory is $datadir/pkgconfig, but the default can be
  268 dnl changed by passing DIRECTORY. The user can override through the
  269 dnl --with-noarch-pkgconfigdir parameter.
  270 AC_DEFUN([PKG_NOARCH_INSTALLDIR],
  271 [m4_pushdef([pkg_default], [m4_default([$1], ['${datadir}/pkgconfig'])])
  272 m4_pushdef([pkg_description],
  273     [pkg-config arch-independent installation directory @<:@]pkg_default[@:>@])
  274 AC_ARG_WITH([noarch-pkgconfigdir],
  275     [AS_HELP_STRING([--with-noarch-pkgconfigdir], pkg_description)],,
  276     [with_noarch_pkgconfigdir=]pkg_default)
  277 AC_SUBST([noarch_pkgconfigdir], [$with_noarch_pkgconfigdir])
  278 m4_popdef([pkg_default])
  279 m4_popdef([pkg_description])
  280 ])dnl PKG_NOARCH_INSTALLDIR
  281 
  282 
  283 dnl PKG_CHECK_VAR(VARIABLE, MODULE, CONFIG-VARIABLE,
  284 dnl [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
  285 dnl -------------------------------------------
  286 dnl Since: 0.28
  287 dnl
  288 dnl Retrieves the value of the pkg-config variable for the given module.
  289 AC_DEFUN([PKG_CHECK_VAR],
  290 [AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
  291 AC_ARG_VAR([$1], [value of $3 for $2, overriding pkg-config])dnl
  292 
  293 _PKG_CONFIG([$1], [variable="][$3]["], [$2])
  294 AS_VAR_COPY([$1], [pkg_cv_][$1])
  295 
  296 AS_VAR_IF([$1], [""], [$5], [$4])dnl
  297 ])dnl PKG_CHECK_VAR
  298 
  299 dnl PKG_WITH_MODULES(VARIABLE-PREFIX, MODULES,
  300 dnl   [ACTION-IF-FOUND],[ACTION-IF-NOT-FOUND],
  301 dnl   [DESCRIPTION], [DEFAULT])
  302 dnl ------------------------------------------
  303 dnl
  304 dnl Prepare a "--with-" configure option using the lowercase
  305 dnl [VARIABLE-PREFIX] name, merging the behaviour of AC_ARG_WITH and
  306 dnl PKG_CHECK_MODULES in a single macro.
  307 AC_DEFUN([PKG_WITH_MODULES],
  308 [
  309 m4_pushdef([with_arg], m4_tolower([$1]))
  310 
  311 m4_pushdef([description],
  312            [m4_default([$5], [build with ]with_arg[ support])])
  313 
  314 m4_pushdef([def_arg], [m4_default([$6], [auto])])
  315 m4_pushdef([def_action_if_found], [AS_TR_SH([with_]with_arg)=yes])
  316 m4_pushdef([def_action_if_not_found], [AS_TR_SH([with_]with_arg)=no])
  317 
  318 m4_case(def_arg,
  319             [yes],[m4_pushdef([with_without], [--without-]with_arg)],
  320             [m4_pushdef([with_without],[--with-]with_arg)])
  321 
  322 AC_ARG_WITH(with_arg,
  323      AS_HELP_STRING(with_without, description[ @<:@default=]def_arg[@:>@]),,
  324     [AS_TR_SH([with_]with_arg)=def_arg])
  325 
  326 AS_CASE([$AS_TR_SH([with_]with_arg)],
  327             [yes],[PKG_CHECK_MODULES([$1],[$2],$3,$4)],
  328             [auto],[PKG_CHECK_MODULES([$1],[$2],
  329                                         [m4_n([def_action_if_found]) $3],
  330                                         [m4_n([def_action_if_not_found]) $4])])
  331 
  332 m4_popdef([with_arg])
  333 m4_popdef([description])
  334 m4_popdef([def_arg])
  335 
  336 ])dnl PKG_WITH_MODULES
  337 
  338 dnl PKG_HAVE_WITH_MODULES(VARIABLE-PREFIX, MODULES,
  339 dnl   [DESCRIPTION], [DEFAULT])
  340 dnl -----------------------------------------------
  341 dnl
  342 dnl Convenience macro to trigger AM_CONDITIONAL after PKG_WITH_MODULES
  343 dnl check._[VARIABLE-PREFIX] is exported as make variable.
  344 AC_DEFUN([PKG_HAVE_WITH_MODULES],
  345 [
  346 PKG_WITH_MODULES([$1],[$2],,,[$3],[$4])
  347 
  348 AM_CONDITIONAL([HAVE_][$1],
  349                [test "$AS_TR_SH([with_]m4_tolower([$1]))" = "yes"])
  350 ])dnl PKG_HAVE_WITH_MODULES
  351 
  352 dnl PKG_HAVE_DEFINE_WITH_MODULES(VARIABLE-PREFIX, MODULES,
  353 dnl   [DESCRIPTION], [DEFAULT])
  354 dnl ------------------------------------------------------
  355 dnl
  356 dnl Convenience macro to run AM_CONDITIONAL and AC_DEFINE after
  357 dnl PKG_WITH_MODULES check. HAVE_[VARIABLE-PREFIX] is exported as make
  358 dnl and preprocessor variable.
  359 AC_DEFUN([PKG_HAVE_DEFINE_WITH_MODULES],
  360 [
  361 PKG_HAVE_WITH_MODULES([$1],[$2],[$3],[$4])
  362 
  363 AS_IF([test "$AS_TR_SH([with_]m4_tolower([$1]))" = "yes"],
  364         [AC_DEFINE([HAVE_][$1], 1, [Enable ]m4_tolower([$1])[ support])])
  365 ])dnl PKG_HAVE_DEFINE_WITH_MODULES
  366 
  367 # Copyright (C) 2002-2018 Free Software Foundation, Inc.
  368 #
  369 # This file is free software; the Free Software Foundation
  370 # gives unlimited permission to copy and/or distribute it,
  371 # with or without modifications, as long as this notice is preserved.
  372 
  373 # AM_AUTOMAKE_VERSION(VERSION)
  374 # ----------------------------
  375 # Automake X.Y traces this macro to ensure aclocal.m4 has been
  376 # generated from the m4 files accompanying Automake X.Y.
  377 # (This private macro should not be called outside this file.)
  378 AC_DEFUN([AM_AUTOMAKE_VERSION],
  379 [am__api_version='1.16'
  380 dnl Some users find AM_AUTOMAKE_VERSION and mistake it for a way to
  381 dnl require some minimum version.  Point them to the right macro.
  382 m4_if([$1], [1.16.1], [],
  383       [AC_FATAL([Do not call $0, use AM_INIT_AUTOMAKE([$1]).])])dnl
  384 ])
  385 
  386 # _AM_AUTOCONF_VERSION(VERSION)
  387 # -----------------------------
  388 # aclocal traces this macro to find the Autoconf version.
  389 # This is a private macro too.  Using m4_define simplifies
  390 # the logic in aclocal, which can simply ignore this definition.
  391 m4_define([_AM_AUTOCONF_VERSION], [])
  392 
  393 # AM_SET_CURRENT_AUTOMAKE_VERSION
  394 # -------------------------------
  395 # Call AM_AUTOMAKE_VERSION and AM_AUTOMAKE_VERSION so they can be traced.
  396 # This function is AC_REQUIREd by AM_INIT_AUTOMAKE.
  397 AC_DEFUN([AM_SET_CURRENT_AUTOMAKE_VERSION],
  398 [AM_AUTOMAKE_VERSION([1.16.1])dnl
  399 m4_ifndef([AC_AUTOCONF_VERSION],
  400   [m4_copy([m4_PACKAGE_VERSION], [AC_AUTOCONF_VERSION])])dnl
  401 _AM_AUTOCONF_VERSION(m4_defn([AC_AUTOCONF_VERSION]))])
  402 
  403 # Figure out how to run the assembler.                      -*- Autoconf -*-
  404 
  405 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
  406 #
  407 # This file is free software; the Free Software Foundation
  408 # gives unlimited permission to copy and/or distribute it,
  409 # with or without modifications, as long as this notice is preserved.
  410 
  411 # AM_PROG_AS
  412 # ----------
  413 AC_DEFUN([AM_PROG_AS],
  414 [# By default we simply use the C compiler to build assembly code.
  415 AC_REQUIRE([AC_PROG_CC])
  416 test "${CCAS+set}" = set || CCAS=$CC
  417 test "${CCASFLAGS+set}" = set || CCASFLAGS=$CFLAGS
  418 AC_ARG_VAR([CCAS],      [assembler compiler command (defaults to CC)])
  419 AC_ARG_VAR([CCASFLAGS], [assembler compiler flags (defaults to CFLAGS)])
  420 _AM_IF_OPTION([no-dependencies],, [_AM_DEPENDENCIES([CCAS])])dnl
  421 ])
  422 
  423 # AM_AUX_DIR_EXPAND                                         -*- Autoconf -*-
  424 
  425 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
  426 #
  427 # This file is free software; the Free Software Foundation
  428 # gives unlimited permission to copy and/or distribute it,
  429 # with or without modifications, as long as this notice is preserved.
  430 
  431 # For projects using AC_CONFIG_AUX_DIR([foo]), Autoconf sets
  432 # $ac_aux_dir to '$srcdir/foo'.  In other projects, it is set to
  433 # '$srcdir', '$srcdir/..', or '$srcdir/../..'.
  434 #
  435 # Of course, Automake must honor this variable whenever it calls a
  436 # tool from the auxiliary directory.  The problem is that $srcdir (and
  437 # therefore $ac_aux_dir as well) can be either absolute or relative,
  438 # depending on how configure is run.  This is pretty annoying, since
  439 # it makes $ac_aux_dir quite unusable in subdirectories: in the top
  440 # source directory, any form will work fine, but in subdirectories a
  441 # relative path needs to be adjusted first.
  442 #
  443 # $ac_aux_dir/missing
  444 #    fails when called from a subdirectory if $ac_aux_dir is relative
  445 # $top_srcdir/$ac_aux_dir/missing
  446 #    fails if $ac_aux_dir is absolute,
  447 #    fails when called from a subdirectory in a VPATH build with
  448 #          a relative $ac_aux_dir
  449 #
  450 # The reason of the latter failure is that $top_srcdir and $ac_aux_dir
  451 # are both prefixed by $srcdir.  In an in-source build this is usually
  452 # harmless because $srcdir is '.', but things will broke when you
  453 # start a VPATH build or use an absolute $srcdir.
  454 #
  455 # So we could use something similar to $top_srcdir/$ac_aux_dir/missing,
  456 # iff we strip the leading $srcdir from $ac_aux_dir.  That would be:
  457 #   am_aux_dir='\$(top_srcdir)/'`expr "$ac_aux_dir" : "$srcdir//*\(.*\)"`
  458 # and then we would define $MISSING as
  459 #   MISSING="\${SHELL} $am_aux_dir/missing"
  460 # This will work as long as MISSING is not called from configure, because
  461 # unfortunately $(top_srcdir) has no meaning in configure.
  462 # However there are other variables, like CC, which are often used in
  463 # configure, and could therefore not use this "fixed" $ac_aux_dir.
  464 #
  465 # Another solution, used here, is to always expand $ac_aux_dir to an
  466 # absolute PATH.  The drawback is that using absolute paths prevent a
  467 # configured tree to be moved without reconfiguration.
  468 
  469 AC_DEFUN([AM_AUX_DIR_EXPAND],
  470 [AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT])dnl
  471 # Expand $ac_aux_dir to an absolute path.
  472 am_aux_dir=`cd "$ac_aux_dir" && pwd`
  473 ])
  474 
  475 # AM_CONDITIONAL                                            -*- Autoconf -*-
  476 
  477 # Copyright (C) 1997-2018 Free Software Foundation, Inc.
  478 #
  479 # This file is free software; the Free Software Foundation
  480 # gives unlimited permission to copy and/or distribute it,
  481 # with or without modifications, as long as this notice is preserved.
  482 
  483 # AM_CONDITIONAL(NAME, SHELL-CONDITION)
  484 # -------------------------------------
  485 # Define a conditional.
  486 AC_DEFUN([AM_CONDITIONAL],
  487 [AC_PREREQ([2.52])dnl
  488  m4_if([$1], [TRUE],  [AC_FATAL([$0: invalid condition: $1])],
  489        [$1], [FALSE], [AC_FATAL([$0: invalid condition: $1])])dnl
  490 AC_SUBST([$1_TRUE])dnl
  491 AC_SUBST([$1_FALSE])dnl
  492 _AM_SUBST_NOTMAKE([$1_TRUE])dnl
  493 _AM_SUBST_NOTMAKE([$1_FALSE])dnl
  494 m4_define([_AM_COND_VALUE_$1], [$2])dnl
  495 if $2; then
  496   $1_TRUE=
  497   $1_FALSE='#'
  498 else
  499   $1_TRUE='#'
  500   $1_FALSE=
  501 fi
  502 AC_CONFIG_COMMANDS_PRE(
  503 [if test -z "${$1_TRUE}" && test -z "${$1_FALSE}"; then
  504   AC_MSG_ERROR([[conditional "$1" was never defined.
  505 Usually this means the macro was only invoked conditionally.]])
  506 fi])])
  507 
  508 # Copyright (C) 1999-2018 Free Software Foundation, Inc.
  509 #
  510 # This file is free software; the Free Software Foundation
  511 # gives unlimited permission to copy and/or distribute it,
  512 # with or without modifications, as long as this notice is preserved.
  513 
  514 
  515 # There are a few dirty hacks below to avoid letting 'AC_PROG_CC' be
  516 # written in clear, in which case automake, when reading aclocal.m4,
  517 # will think it sees a *use*, and therefore will trigger all it's
  518 # C support machinery.  Also note that it means that autoscan, seeing
  519 # CC etc. in the Makefile, will ask for an AC_PROG_CC use...
  520 
  521 
  522 # _AM_DEPENDENCIES(NAME)
  523 # ----------------------
  524 # See how the compiler implements dependency checking.
  525 # NAME is "CC", "CXX", "OBJC", "OBJCXX", "UPC", or "GJC".
  526 # We try a few techniques and use that to set a single cache variable.
  527 #
  528 # We don't AC_REQUIRE the corresponding AC_PROG_CC since the latter was
  529 # modified to invoke _AM_DEPENDENCIES(CC); we would have a circular
  530 # dependency, and given that the user is not expected to run this macro,
  531 # just rely on AC_PROG_CC.
  532 AC_DEFUN([_AM_DEPENDENCIES],
  533 [AC_REQUIRE([AM_SET_DEPDIR])dnl
  534 AC_REQUIRE([AM_OUTPUT_DEPENDENCY_COMMANDS])dnl
  535 AC_REQUIRE([AM_MAKE_INCLUDE])dnl
  536 AC_REQUIRE([AM_DEP_TRACK])dnl
  537 
  538 m4_if([$1], [CC],   [depcc="$CC"   am_compiler_list=],
  539       [$1], [CXX],  [depcc="$CXX"  am_compiler_list=],
  540       [$1], [OBJC], [depcc="$OBJC" am_compiler_list='gcc3 gcc'],
  541       [$1], [OBJCXX], [depcc="$OBJCXX" am_compiler_list='gcc3 gcc'],
  542       [$1], [UPC],  [depcc="$UPC"  am_compiler_list=],
  543       [$1], [GCJ],  [depcc="$GCJ"  am_compiler_list='gcc3 gcc'],
  544                     [depcc="$$1"   am_compiler_list=])
  545 
  546 AC_CACHE_CHECK([dependency style of $depcc],
  547                [am_cv_$1_dependencies_compiler_type],
  548 [if test -z "$AMDEP_TRUE" && test -f "$am_depcomp"; then
  549   # We make a subdir and do the tests there.  Otherwise we can end up
  550   # making bogus files that we don't know about and never remove.  For
  551   # instance it was reported that on HP-UX the gcc test will end up
  552   # making a dummy file named 'D' -- because '-MD' means "put the output
  553   # in D".
  554   rm -rf conftest.dir
  555   mkdir conftest.dir
  556   # Copy depcomp to subdir because otherwise we won't find it if we're
  557   # using a relative directory.
  558   cp "$am_depcomp" conftest.dir
  559   cd conftest.dir
  560   # We will build objects and dependencies in a subdirectory because
  561   # it helps to detect inapplicable dependency modes.  For instance
  562   # both Tru64's cc and ICC support -MD to output dependencies as a
  563   # side effect of compilation, but ICC will put the dependencies in
  564   # the current directory while Tru64 will put them in the object
  565   # directory.
  566   mkdir sub
  567 
  568   am_cv_$1_dependencies_compiler_type=none
  569   if test "$am_compiler_list" = ""; then
  570      am_compiler_list=`sed -n ['s/^#*\([a-zA-Z0-9]*\))$/\1/p'] < ./depcomp`
  571   fi
  572   am__universal=false
  573   m4_case([$1], [CC],
  574     [case " $depcc " in #(
  575      *\ -arch\ *\ -arch\ *) am__universal=true ;;
  576      esac],
  577     [CXX],
  578     [case " $depcc " in #(
  579      *\ -arch\ *\ -arch\ *) am__universal=true ;;
  580      esac])
  581 
  582   for depmode in $am_compiler_list; do
  583     # Setup a source with many dependencies, because some compilers
  584     # like to wrap large dependency lists on column 80 (with \), and
  585     # we should not choose a depcomp mode which is confused by this.
  586     #
  587     # We need to recreate these files for each test, as the compiler may
  588     # overwrite some of them when testing with obscure command lines.
  589     # This happens at least with the AIX C compiler.
  590     : > sub/conftest.c
  591     for i in 1 2 3 4 5 6; do
  592       echo '#include "conftst'$i'.h"' >> sub/conftest.c
  593       # Using ": > sub/conftst$i.h" creates only sub/conftst1.h with
  594       # Solaris 10 /bin/sh.
  595       echo '/* dummy */' > sub/conftst$i.h
  596     done
  597     echo "${am__include} ${am__quote}sub/conftest.Po${am__quote}" > confmf
  598 
  599     # We check with '-c' and '-o' for the sake of the "dashmstdout"
  600     # mode.  It turns out that the SunPro C++ compiler does not properly
  601     # handle '-M -o', and we need to detect this.  Also, some Intel
  602     # versions had trouble with output in subdirs.
  603     am__obj=sub/conftest.${OBJEXT-o}
  604     am__minus_obj="-o $am__obj"
  605     case $depmode in
  606     gcc)
  607       # This depmode causes a compiler race in universal mode.
  608       test "$am__universal" = false || continue
  609       ;;
  610     nosideeffect)
  611       # After this tag, mechanisms are not by side-effect, so they'll
  612       # only be used when explicitly requested.
  613       if test "x$enable_dependency_tracking" = xyes; then
  614 	continue
  615       else
  616 	break
  617       fi
  618       ;;
  619     msvc7 | msvc7msys | msvisualcpp | msvcmsys)
  620       # This compiler won't grok '-c -o', but also, the minuso test has
  621       # not run yet.  These depmodes are late enough in the game, and
  622       # so weak that their functioning should not be impacted.
  623       am__obj=conftest.${OBJEXT-o}
  624       am__minus_obj=
  625       ;;
  626     none) break ;;
  627     esac
  628     if depmode=$depmode \
  629        source=sub/conftest.c object=$am__obj \
  630        depfile=sub/conftest.Po tmpdepfile=sub/conftest.TPo \
  631        $SHELL ./depcomp $depcc -c $am__minus_obj sub/conftest.c \
  632          >/dev/null 2>conftest.err &&
  633        grep sub/conftst1.h sub/conftest.Po > /dev/null 2>&1 &&
  634        grep sub/conftst6.h sub/conftest.Po > /dev/null 2>&1 &&
  635        grep $am__obj sub/conftest.Po > /dev/null 2>&1 &&
  636        ${MAKE-make} -s -f confmf > /dev/null 2>&1; then
  637       # icc doesn't choke on unknown options, it will just issue warnings
  638       # or remarks (even with -Werror).  So we grep stderr for any message
  639       # that says an option was ignored or not supported.
  640       # When given -MP, icc 7.0 and 7.1 complain thusly:
  641       #   icc: Command line warning: ignoring option '-M'; no argument required
  642       # The diagnosis changed in icc 8.0:
  643       #   icc: Command line remark: option '-MP' not supported
  644       if (grep 'ignoring option' conftest.err ||
  645           grep 'not supported' conftest.err) >/dev/null 2>&1; then :; else
  646         am_cv_$1_dependencies_compiler_type=$depmode
  647         break
  648       fi
  649     fi
  650   done
  651 
  652   cd ..
  653   rm -rf conftest.dir
  654 else
  655   am_cv_$1_dependencies_compiler_type=none
  656 fi
  657 ])
  658 AC_SUBST([$1DEPMODE], [depmode=$am_cv_$1_dependencies_compiler_type])
  659 AM_CONDITIONAL([am__fastdep$1], [
  660   test "x$enable_dependency_tracking" != xno \
  661   && test "$am_cv_$1_dependencies_compiler_type" = gcc3])
  662 ])
  663 
  664 
  665 # AM_SET_DEPDIR
  666 # -------------
  667 # Choose a directory name for dependency files.
  668 # This macro is AC_REQUIREd in _AM_DEPENDENCIES.
  669 AC_DEFUN([AM_SET_DEPDIR],
  670 [AC_REQUIRE([AM_SET_LEADING_DOT])dnl
  671 AC_SUBST([DEPDIR], ["${am__leading_dot}deps"])dnl
  672 ])
  673 
  674 
  675 # AM_DEP_TRACK
  676 # ------------
  677 AC_DEFUN([AM_DEP_TRACK],
  678 [AC_ARG_ENABLE([dependency-tracking], [dnl
  679 AS_HELP_STRING(
  680   [--enable-dependency-tracking],
  681   [do not reject slow dependency extractors])
  682 AS_HELP_STRING(
  683   [--disable-dependency-tracking],
  684   [speeds up one-time build])])
  685 if test "x$enable_dependency_tracking" != xno; then
  686   am_depcomp="$ac_aux_dir/depcomp"
  687   AMDEPBACKSLASH='\'
  688   am__nodep='_no'
  689 fi
  690 AM_CONDITIONAL([AMDEP], [test "x$enable_dependency_tracking" != xno])
  691 AC_SUBST([AMDEPBACKSLASH])dnl
  692 _AM_SUBST_NOTMAKE([AMDEPBACKSLASH])dnl
  693 AC_SUBST([am__nodep])dnl
  694 _AM_SUBST_NOTMAKE([am__nodep])dnl
  695 ])
  696 
  697 # Generate code to set up dependency tracking.              -*- Autoconf -*-
  698 
  699 # Copyright (C) 1999-2018 Free Software Foundation, Inc.
  700 #
  701 # This file is free software; the Free Software Foundation
  702 # gives unlimited permission to copy and/or distribute it,
  703 # with or without modifications, as long as this notice is preserved.
  704 
  705 # _AM_OUTPUT_DEPENDENCY_COMMANDS
  706 # ------------------------------
  707 AC_DEFUN([_AM_OUTPUT_DEPENDENCY_COMMANDS],
  708 [{
  709   # Older Autoconf quotes --file arguments for eval, but not when files
  710   # are listed without --file.  Let's play safe and only enable the eval
  711   # if we detect the quoting.
  712   # TODO: see whether this extra hack can be removed once we start
  713   # requiring Autoconf 2.70 or later.
  714   AS_CASE([$CONFIG_FILES],
  715           [*\'*], [eval set x "$CONFIG_FILES"],
  716           [*], [set x $CONFIG_FILES])
  717   shift
  718   # Used to flag and report bootstrapping failures.
  719   am_rc=0
  720   for am_mf
  721   do
  722     # Strip MF so we end up with the name of the file.
  723     am_mf=`AS_ECHO(["$am_mf"]) | sed -e 's/:.*$//'`
  724     # Check whether this is an Automake generated Makefile which includes
  725     # dependency-tracking related rules and includes.
  726     # Grep'ing the whole file directly is not great: AIX grep has a line
  727     # limit of 2048, but all sed's we know have understand at least 4000.
  728     sed -n 's,^am--depfiles:.*,X,p' "$am_mf" | grep X >/dev/null 2>&1 \
  729       || continue
  730     am_dirpart=`AS_DIRNAME(["$am_mf"])`
  731     am_filepart=`AS_BASENAME(["$am_mf"])`
  732     AM_RUN_LOG([cd "$am_dirpart" \
  733       && sed -e '/# am--include-marker/d' "$am_filepart" \
  734         | $MAKE -f - am--depfiles]) || am_rc=$?
  735   done
  736   if test $am_rc -ne 0; then
  737     AC_MSG_FAILURE([Something went wrong bootstrapping makefile fragments
  738     for automatic dependency tracking.  Try re-running configure with the
  739     '--disable-dependency-tracking' option to at least be able to build
  740     the package (albeit without support for automatic dependency tracking).])
  741   fi
  742   AS_UNSET([am_dirpart])
  743   AS_UNSET([am_filepart])
  744   AS_UNSET([am_mf])
  745   AS_UNSET([am_rc])
  746   rm -f conftest-deps.mk
  747 }
  748 ])# _AM_OUTPUT_DEPENDENCY_COMMANDS
  749 
  750 
  751 # AM_OUTPUT_DEPENDENCY_COMMANDS
  752 # -----------------------------
  753 # This macro should only be invoked once -- use via AC_REQUIRE.
  754 #
  755 # This code is only required when automatic dependency tracking is enabled.
  756 # This creates each '.Po' and '.Plo' makefile fragment that we'll need in
  757 # order to bootstrap the dependency handling code.
  758 AC_DEFUN([AM_OUTPUT_DEPENDENCY_COMMANDS],
  759 [AC_CONFIG_COMMANDS([depfiles],
  760      [test x"$AMDEP_TRUE" != x"" || _AM_OUTPUT_DEPENDENCY_COMMANDS],
  761      [AMDEP_TRUE="$AMDEP_TRUE" MAKE="${MAKE-make}"])])
  762 
  763 # Do all the work for Automake.                             -*- Autoconf -*-
  764 
  765 # Copyright (C) 1996-2018 Free Software Foundation, Inc.
  766 #
  767 # This file is free software; the Free Software Foundation
  768 # gives unlimited permission to copy and/or distribute it,
  769 # with or without modifications, as long as this notice is preserved.
  770 
  771 # This macro actually does too much.  Some checks are only needed if
  772 # your package does certain things.  But this isn't really a big deal.
  773 
  774 dnl Redefine AC_PROG_CC to automatically invoke _AM_PROG_CC_C_O.
  775 m4_define([AC_PROG_CC],
  776 m4_defn([AC_PROG_CC])
  777 [_AM_PROG_CC_C_O
  778 ])
  779 
  780 # AM_INIT_AUTOMAKE(PACKAGE, VERSION, [NO-DEFINE])
  781 # AM_INIT_AUTOMAKE([OPTIONS])
  782 # -----------------------------------------------
  783 # The call with PACKAGE and VERSION arguments is the old style
  784 # call (pre autoconf-2.50), which is being phased out.  PACKAGE
  785 # and VERSION should now be passed to AC_INIT and removed from
  786 # the call to AM_INIT_AUTOMAKE.
  787 # We support both call styles for the transition.  After
  788 # the next Automake release, Autoconf can make the AC_INIT
  789 # arguments mandatory, and then we can depend on a new Autoconf
  790 # release and drop the old call support.
  791 AC_DEFUN([AM_INIT_AUTOMAKE],
  792 [AC_PREREQ([2.65])dnl
  793 dnl Autoconf wants to disallow AM_ names.  We explicitly allow
  794 dnl the ones we care about.
  795 m4_pattern_allow([^AM_[A-Z]+FLAGS$])dnl
  796 AC_REQUIRE([AM_SET_CURRENT_AUTOMAKE_VERSION])dnl
  797 AC_REQUIRE([AC_PROG_INSTALL])dnl
  798 if test "`cd $srcdir && pwd`" != "`pwd`"; then
  799   # Use -I$(srcdir) only when $(srcdir) != ., so that make's output
  800   # is not polluted with repeated "-I."
  801   AC_SUBST([am__isrc], [' -I$(srcdir)'])_AM_SUBST_NOTMAKE([am__isrc])dnl
  802   # test to see if srcdir already configured
  803   if test -f $srcdir/config.status; then
  804     AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
  805   fi
  806 fi
  807 
  808 # test whether we have cygpath
  809 if test -z "$CYGPATH_W"; then
  810   if (cygpath --version) >/dev/null 2>/dev/null; then
  811     CYGPATH_W='cygpath -w'
  812   else
  813     CYGPATH_W=echo
  814   fi
  815 fi
  816 AC_SUBST([CYGPATH_W])
  817 
  818 # Define the identity of the package.
  819 dnl Distinguish between old-style and new-style calls.
  820 m4_ifval([$2],
  821 [AC_DIAGNOSE([obsolete],
  822              [$0: two- and three-arguments forms are deprecated.])
  823 m4_ifval([$3], [_AM_SET_OPTION([no-define])])dnl
  824  AC_SUBST([PACKAGE], [$1])dnl
  825  AC_SUBST([VERSION], [$2])],
  826 [_AM_SET_OPTIONS([$1])dnl
  827 dnl Diagnose old-style AC_INIT with new-style AM_AUTOMAKE_INIT.
  828 m4_if(
  829   m4_ifdef([AC_PACKAGE_NAME], [ok]):m4_ifdef([AC_PACKAGE_VERSION], [ok]),
  830   [ok:ok],,
  831   [m4_fatal([AC_INIT should be called with package and version arguments])])dnl
  832  AC_SUBST([PACKAGE], ['AC_PACKAGE_TARNAME'])dnl
  833  AC_SUBST([VERSION], ['AC_PACKAGE_VERSION'])])dnl
  834 
  835 _AM_IF_OPTION([no-define],,
  836 [AC_DEFINE_UNQUOTED([PACKAGE], ["$PACKAGE"], [Name of package])
  837  AC_DEFINE_UNQUOTED([VERSION], ["$VERSION"], [Version number of package])])dnl
  838 
  839 # Some tools Automake needs.
  840 AC_REQUIRE([AM_SANITY_CHECK])dnl
  841 AC_REQUIRE([AC_ARG_PROGRAM])dnl
  842 AM_MISSING_PROG([ACLOCAL], [aclocal-${am__api_version}])
  843 AM_MISSING_PROG([AUTOCONF], [autoconf])
  844 AM_MISSING_PROG([AUTOMAKE], [automake-${am__api_version}])
  845 AM_MISSING_PROG([AUTOHEADER], [autoheader])
  846 AM_MISSING_PROG([MAKEINFO], [makeinfo])
  847 AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
  848 AC_REQUIRE([AM_PROG_INSTALL_STRIP])dnl
  849 AC_REQUIRE([AC_PROG_MKDIR_P])dnl
  850 # For better backward compatibility.  To be removed once Automake 1.9.x
  851 # dies out for good.  For more background, see:
  852 # <https://lists.gnu.org/archive/html/automake/2012-07/msg00001.html>
  853 # <https://lists.gnu.org/archive/html/automake/2012-07/msg00014.html>
  854 AC_SUBST([mkdir_p], ['$(MKDIR_P)'])
  855 # We need awk for the "check" target (and possibly the TAP driver).  The
  856 # system "awk" is bad on some platforms.
  857 AC_REQUIRE([AC_PROG_AWK])dnl
  858 AC_REQUIRE([AC_PROG_MAKE_SET])dnl
  859 AC_REQUIRE([AM_SET_LEADING_DOT])dnl
  860 _AM_IF_OPTION([tar-ustar], [_AM_PROG_TAR([ustar])],
  861 	      [_AM_IF_OPTION([tar-pax], [_AM_PROG_TAR([pax])],
  862 			     [_AM_PROG_TAR([v7])])])
  863 _AM_IF_OPTION([no-dependencies],,
  864 [AC_PROVIDE_IFELSE([AC_PROG_CC],
  865 		  [_AM_DEPENDENCIES([CC])],
  866 		  [m4_define([AC_PROG_CC],
  867 			     m4_defn([AC_PROG_CC])[_AM_DEPENDENCIES([CC])])])dnl
  868 AC_PROVIDE_IFELSE([AC_PROG_CXX],
  869 		  [_AM_DEPENDENCIES([CXX])],
  870 		  [m4_define([AC_PROG_CXX],
  871 			     m4_defn([AC_PROG_CXX])[_AM_DEPENDENCIES([CXX])])])dnl
  872 AC_PROVIDE_IFELSE([AC_PROG_OBJC],
  873 		  [_AM_DEPENDENCIES([OBJC])],
  874 		  [m4_define([AC_PROG_OBJC],
  875 			     m4_defn([AC_PROG_OBJC])[_AM_DEPENDENCIES([OBJC])])])dnl
  876 AC_PROVIDE_IFELSE([AC_PROG_OBJCXX],
  877 		  [_AM_DEPENDENCIES([OBJCXX])],
  878 		  [m4_define([AC_PROG_OBJCXX],
  879 			     m4_defn([AC_PROG_OBJCXX])[_AM_DEPENDENCIES([OBJCXX])])])dnl
  880 ])
  881 AC_REQUIRE([AM_SILENT_RULES])dnl
  882 dnl The testsuite driver may need to know about EXEEXT, so add the
  883 dnl 'am__EXEEXT' conditional if _AM_COMPILER_EXEEXT was seen.  This
  884 dnl macro is hooked onto _AC_COMPILER_EXEEXT early, see below.
  885 AC_CONFIG_COMMANDS_PRE(dnl
  886 [m4_provide_if([_AM_COMPILER_EXEEXT],
  887   [AM_CONDITIONAL([am__EXEEXT], [test -n "$EXEEXT"])])])dnl
  888 
  889 # POSIX will say in a future version that running "rm -f" with no argument
  890 # is OK; and we want to be able to make that assumption in our Makefile
  891 # recipes.  So use an aggressive probe to check that the usage we want is
  892 # actually supported "in the wild" to an acceptable degree.
  893 # See automake bug#10828.
  894 # To make any issue more visible, cause the running configure to be aborted
  895 # by default if the 'rm' program in use doesn't match our expectations; the
  896 # user can still override this though.
  897 if rm -f && rm -fr && rm -rf; then : OK; else
  898   cat >&2 <<'END'
  899 Oops!
  900 
  901 Your 'rm' program seems unable to run without file operands specified
  902 on the command line, even when the '-f' option is present.  This is contrary
  903 to the behaviour of most rm programs out there, and not conforming with
  904 the upcoming POSIX standard: <http://austingroupbugs.net/view.php?id=542>
  905 
  906 Please tell bug-automake@gnu.org about your system, including the value
  907 of your $PATH and any error possibly output before this message.  This
  908 can help us improve future automake versions.
  909 
  910 END
  911   if test x"$ACCEPT_INFERIOR_RM_PROGRAM" = x"yes"; then
  912     echo 'Configuration will proceed anyway, since you have set the' >&2
  913     echo 'ACCEPT_INFERIOR_RM_PROGRAM variable to "yes"' >&2
  914     echo >&2
  915   else
  916     cat >&2 <<'END'
  917 Aborting the configuration process, to ensure you take notice of the issue.
  918 
  919 You can download and install GNU coreutils to get an 'rm' implementation
  920 that behaves properly: <https://www.gnu.org/software/coreutils/>.
  921 
  922 If you want to complete the configuration process using your problematic
  923 'rm' anyway, export the environment variable ACCEPT_INFERIOR_RM_PROGRAM
  924 to "yes", and re-run configure.
  925 
  926 END
  927     AC_MSG_ERROR([Your 'rm' program is bad, sorry.])
  928   fi
  929 fi
  930 dnl The trailing newline in this macro's definition is deliberate, for
  931 dnl backward compatibility and to allow trailing 'dnl'-style comments
  932 dnl after the AM_INIT_AUTOMAKE invocation. See automake bug#16841.
  933 ])
  934 
  935 dnl Hook into '_AC_COMPILER_EXEEXT' early to learn its expansion.  Do not
  936 dnl add the conditional right here, as _AC_COMPILER_EXEEXT may be further
  937 dnl mangled by Autoconf and run in a shell conditional statement.
  938 m4_define([_AC_COMPILER_EXEEXT],
  939 m4_defn([_AC_COMPILER_EXEEXT])[m4_provide([_AM_COMPILER_EXEEXT])])
  940 
  941 # When config.status generates a header, we must update the stamp-h file.
  942 # This file resides in the same directory as the config header
  943 # that is generated.  The stamp files are numbered to have different names.
  944 
  945 # Autoconf calls _AC_AM_CONFIG_HEADER_HOOK (when defined) in the
  946 # loop where config.status creates the headers, so we can generate
  947 # our stamp files there.
  948 AC_DEFUN([_AC_AM_CONFIG_HEADER_HOOK],
  949 [# Compute $1's index in $config_headers.
  950 _am_arg=$1
  951 _am_stamp_count=1
  952 for _am_header in $config_headers :; do
  953   case $_am_header in
  954     $_am_arg | $_am_arg:* )
  955       break ;;
  956     * )
  957       _am_stamp_count=`expr $_am_stamp_count + 1` ;;
  958   esac
  959 done
  960 echo "timestamp for $_am_arg" >`AS_DIRNAME(["$_am_arg"])`/stamp-h[]$_am_stamp_count])
  961 
  962 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
  963 #
  964 # This file is free software; the Free Software Foundation
  965 # gives unlimited permission to copy and/or distribute it,
  966 # with or without modifications, as long as this notice is preserved.
  967 
  968 # AM_PROG_INSTALL_SH
  969 # ------------------
  970 # Define $install_sh.
  971 AC_DEFUN([AM_PROG_INSTALL_SH],
  972 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
  973 if test x"${install_sh+set}" != xset; then
  974   case $am_aux_dir in
  975   *\ * | *\	*)
  976     install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
  977   *)
  978     install_sh="\${SHELL} $am_aux_dir/install-sh"
  979   esac
  980 fi
  981 AC_SUBST([install_sh])])
  982 
  983 # Copyright (C) 2003-2018 Free Software Foundation, Inc.
  984 #
  985 # This file is free software; the Free Software Foundation
  986 # gives unlimited permission to copy and/or distribute it,
  987 # with or without modifications, as long as this notice is preserved.
  988 
  989 # Check whether the underlying file-system supports filenames
  990 # with a leading dot.  For instance MS-DOS doesn't.
  991 AC_DEFUN([AM_SET_LEADING_DOT],
  992 [rm -rf .tst 2>/dev/null
  993 mkdir .tst 2>/dev/null
  994 if test -d .tst; then
  995   am__leading_dot=.
  996 else
  997   am__leading_dot=_
  998 fi
  999 rmdir .tst 2>/dev/null
 1000 AC_SUBST([am__leading_dot])])
 1001 
 1002 # Check to see how 'make' treats includes.	            -*- Autoconf -*-
 1003 
 1004 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
 1005 #
 1006 # This file is free software; the Free Software Foundation
 1007 # gives unlimited permission to copy and/or distribute it,
 1008 # with or without modifications, as long as this notice is preserved.
 1009 
 1010 # AM_MAKE_INCLUDE()
 1011 # -----------------
 1012 # Check whether make has an 'include' directive that can support all
 1013 # the idioms we need for our automatic dependency tracking code.
 1014 AC_DEFUN([AM_MAKE_INCLUDE],
 1015 [AC_MSG_CHECKING([whether ${MAKE-make} supports the include directive])
 1016 cat > confinc.mk << 'END'
 1017 am__doit:
 1018 	@echo this is the am__doit target >confinc.out
 1019 .PHONY: am__doit
 1020 END
 1021 am__include="#"
 1022 am__quote=
 1023 # BSD make does it like this.
 1024 echo '.include "confinc.mk" # ignored' > confmf.BSD
 1025 # Other make implementations (GNU, Solaris 10, AIX) do it like this.
 1026 echo 'include confinc.mk # ignored' > confmf.GNU
 1027 _am_result=no
 1028 for s in GNU BSD; do
 1029   AM_RUN_LOG([${MAKE-make} -f confmf.$s && cat confinc.out])
 1030   AS_CASE([$?:`cat confinc.out 2>/dev/null`],
 1031       ['0:this is the am__doit target'],
 1032       [AS_CASE([$s],
 1033           [BSD], [am__include='.include' am__quote='"'],
 1034           [am__include='include' am__quote=''])])
 1035   if test "$am__include" != "#"; then
 1036     _am_result="yes ($s style)"
 1037     break
 1038   fi
 1039 done
 1040 rm -f confinc.* confmf.*
 1041 AC_MSG_RESULT([${_am_result}])
 1042 AC_SUBST([am__include])])
 1043 AC_SUBST([am__quote])])
 1044 
 1045 # Fake the existence of programs that GNU maintainers use.  -*- Autoconf -*-
 1046 
 1047 # Copyright (C) 1997-2018 Free Software Foundation, Inc.
 1048 #
 1049 # This file is free software; the Free Software Foundation
 1050 # gives unlimited permission to copy and/or distribute it,
 1051 # with or without modifications, as long as this notice is preserved.
 1052 
 1053 # AM_MISSING_PROG(NAME, PROGRAM)
 1054 # ------------------------------
 1055 AC_DEFUN([AM_MISSING_PROG],
 1056 [AC_REQUIRE([AM_MISSING_HAS_RUN])
 1057 $1=${$1-"${am_missing_run}$2"}
 1058 AC_SUBST($1)])
 1059 
 1060 # AM_MISSING_HAS_RUN
 1061 # ------------------
 1062 # Define MISSING if not defined so far and test if it is modern enough.
 1063 # If it is, set am_missing_run to use it, otherwise, to nothing.
 1064 AC_DEFUN([AM_MISSING_HAS_RUN],
 1065 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
 1066 AC_REQUIRE_AUX_FILE([missing])dnl
 1067 if test x"${MISSING+set}" != xset; then
 1068   case $am_aux_dir in
 1069   *\ * | *\	*)
 1070     MISSING="\${SHELL} \"$am_aux_dir/missing\"" ;;
 1071   *)
 1072     MISSING="\${SHELL} $am_aux_dir/missing" ;;
 1073   esac
 1074 fi
 1075 # Use eval to expand $SHELL
 1076 if eval "$MISSING --is-lightweight"; then
 1077   am_missing_run="$MISSING "
 1078 else
 1079   am_missing_run=
 1080   AC_MSG_WARN(['missing' script is too old or missing])
 1081 fi
 1082 ])
 1083 
 1084 # Helper functions for option handling.                     -*- Autoconf -*-
 1085 
 1086 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
 1087 #
 1088 # This file is free software; the Free Software Foundation
 1089 # gives unlimited permission to copy and/or distribute it,
 1090 # with or without modifications, as long as this notice is preserved.
 1091 
 1092 # _AM_MANGLE_OPTION(NAME)
 1093 # -----------------------
 1094 AC_DEFUN([_AM_MANGLE_OPTION],
 1095 [[_AM_OPTION_]m4_bpatsubst($1, [[^a-zA-Z0-9_]], [_])])
 1096 
 1097 # _AM_SET_OPTION(NAME)
 1098 # --------------------
 1099 # Set option NAME.  Presently that only means defining a flag for this option.
 1100 AC_DEFUN([_AM_SET_OPTION],
 1101 [m4_define(_AM_MANGLE_OPTION([$1]), [1])])
 1102 
 1103 # _AM_SET_OPTIONS(OPTIONS)
 1104 # ------------------------
 1105 # OPTIONS is a space-separated list of Automake options.
 1106 AC_DEFUN([_AM_SET_OPTIONS],
 1107 [m4_foreach_w([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])])
 1108 
 1109 # _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET])
 1110 # -------------------------------------------
 1111 # Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
 1112 AC_DEFUN([_AM_IF_OPTION],
 1113 [m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])
 1114 
 1115 # Copyright (C) 1999-2018 Free Software Foundation, Inc.
 1116 #
 1117 # This file is free software; the Free Software Foundation
 1118 # gives unlimited permission to copy and/or distribute it,
 1119 # with or without modifications, as long as this notice is preserved.
 1120 
 1121 # _AM_PROG_CC_C_O
 1122 # ---------------
 1123 # Like AC_PROG_CC_C_O, but changed for automake.  We rewrite AC_PROG_CC
 1124 # to automatically call this.
 1125 AC_DEFUN([_AM_PROG_CC_C_O],
 1126 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
 1127 AC_REQUIRE_AUX_FILE([compile])dnl
 1128 AC_LANG_PUSH([C])dnl
 1129 AC_CACHE_CHECK(
 1130   [whether $CC understands -c and -o together],
 1131   [am_cv_prog_cc_c_o],
 1132   [AC_LANG_CONFTEST([AC_LANG_PROGRAM([])])
 1133   # Make sure it works both with $CC and with simple cc.
 1134   # Following AC_PROG_CC_C_O, we do the test twice because some
 1135   # compilers refuse to overwrite an existing .o file with -o,
 1136   # though they will create one.
 1137   am_cv_prog_cc_c_o=yes
 1138   for am_i in 1 2; do
 1139     if AM_RUN_LOG([$CC -c conftest.$ac_ext -o conftest2.$ac_objext]) \
 1140          && test -f conftest2.$ac_objext; then
 1141       : OK
 1142     else
 1143       am_cv_prog_cc_c_o=no
 1144       break
 1145     fi
 1146   done
 1147   rm -f core conftest*
 1148   unset am_i])
 1149 if test "$am_cv_prog_cc_c_o" != yes; then
 1150    # Losing compiler, so override with the script.
 1151    # FIXME: It is wrong to rewrite CC.
 1152    # But if we don't then we get into trouble of one sort or another.
 1153    # A longer-term fix would be to have automake use am__CC in this case,
 1154    # and then we could set am__CC="\$(top_srcdir)/compile \$(CC)"
 1155    CC="$am_aux_dir/compile $CC"
 1156 fi
 1157 AC_LANG_POP([C])])
 1158 
 1159 # For backward compatibility.
 1160 AC_DEFUN_ONCE([AM_PROG_CC_C_O], [AC_REQUIRE([AC_PROG_CC])])
 1161 
 1162 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
 1163 #
 1164 # This file is free software; the Free Software Foundation
 1165 # gives unlimited permission to copy and/or distribute it,
 1166 # with or without modifications, as long as this notice is preserved.
 1167 
 1168 # AM_RUN_LOG(COMMAND)
 1169 # -------------------
 1170 # Run COMMAND, save the exit status in ac_status, and log it.
 1171 # (This has been adapted from Autoconf's _AC_RUN_LOG macro.)
 1172 AC_DEFUN([AM_RUN_LOG],
 1173 [{ echo "$as_me:$LINENO: $1" >&AS_MESSAGE_LOG_FD
 1174    ($1) >&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD
 1175    ac_status=$?
 1176    echo "$as_me:$LINENO: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
 1177    (exit $ac_status); }])
 1178 
 1179 # Check to make sure that the build environment is sane.    -*- Autoconf -*-
 1180 
 1181 # Copyright (C) 1996-2018 Free Software Foundation, Inc.
 1182 #
 1183 # This file is free software; the Free Software Foundation
 1184 # gives unlimited permission to copy and/or distribute it,
 1185 # with or without modifications, as long as this notice is preserved.
 1186 
 1187 # AM_SANITY_CHECK
 1188 # ---------------
 1189 AC_DEFUN([AM_SANITY_CHECK],
 1190 [AC_MSG_CHECKING([whether build environment is sane])
 1191 # Reject unsafe characters in $srcdir or the absolute working directory
 1192 # name.  Accept space and tab only in the latter.
 1193 am_lf='
 1194 '
 1195 case `pwd` in
 1196   *[[\\\"\#\$\&\'\`$am_lf]]*)
 1197     AC_MSG_ERROR([unsafe absolute working directory name]);;
 1198 esac
 1199 case $srcdir in
 1200   *[[\\\"\#\$\&\'\`$am_lf\ \	]]*)
 1201     AC_MSG_ERROR([unsafe srcdir value: '$srcdir']);;
 1202 esac
 1203 
 1204 # Do 'set' in a subshell so we don't clobber the current shell's
 1205 # arguments.  Must try -L first in case configure is actually a
 1206 # symlink; some systems play weird games with the mod time of symlinks
 1207 # (eg FreeBSD returns the mod time of the symlink's containing
 1208 # directory).
 1209 if (
 1210    am_has_slept=no
 1211    for am_try in 1 2; do
 1212      echo "timestamp, slept: $am_has_slept" > conftest.file
 1213      set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
 1214      if test "$[*]" = "X"; then
 1215 	# -L didn't work.
 1216 	set X `ls -t "$srcdir/configure" conftest.file`
 1217      fi
 1218      if test "$[*]" != "X $srcdir/configure conftest.file" \
 1219 	&& test "$[*]" != "X conftest.file $srcdir/configure"; then
 1220 
 1221 	# If neither matched, then we have a broken ls.  This can happen
 1222 	# if, for instance, CONFIG_SHELL is bash and it inherits a
 1223 	# broken ls alias from the environment.  This has actually
 1224 	# happened.  Such a system could not be considered "sane".
 1225 	AC_MSG_ERROR([ls -t appears to fail.  Make sure there is not a broken
 1226   alias in your environment])
 1227      fi
 1228      if test "$[2]" = conftest.file || test $am_try -eq 2; then
 1229        break
 1230      fi
 1231      # Just in case.
 1232      sleep 1
 1233      am_has_slept=yes
 1234    done
 1235    test "$[2]" = conftest.file
 1236    )
 1237 then
 1238    # Ok.
 1239    :
 1240 else
 1241    AC_MSG_ERROR([newly created file is older than distributed files!
 1242 Check your system clock])
 1243 fi
 1244 AC_MSG_RESULT([yes])
 1245 # If we didn't sleep, we still need to ensure time stamps of config.status and
 1246 # generated files are strictly newer.
 1247 am_sleep_pid=
 1248 if grep 'slept: no' conftest.file >/dev/null 2>&1; then
 1249   ( sleep 1 ) &
 1250   am_sleep_pid=$!
 1251 fi
 1252 AC_CONFIG_COMMANDS_PRE(
 1253   [AC_MSG_CHECKING([that generated files are newer than configure])
 1254    if test -n "$am_sleep_pid"; then
 1255      # Hide warnings about reused PIDs.
 1256      wait $am_sleep_pid 2>/dev/null
 1257    fi
 1258    AC_MSG_RESULT([done])])
 1259 rm -f conftest.file
 1260 ])
 1261 
 1262 # Copyright (C) 2009-2018 Free Software Foundation, Inc.
 1263 #
 1264 # This file is free software; the Free Software Foundation
 1265 # gives unlimited permission to copy and/or distribute it,
 1266 # with or without modifications, as long as this notice is preserved.
 1267 
 1268 # AM_SILENT_RULES([DEFAULT])
 1269 # --------------------------
 1270 # Enable less verbose build rules; with the default set to DEFAULT
 1271 # ("yes" being less verbose, "no" or empty being verbose).
 1272 AC_DEFUN([AM_SILENT_RULES],
 1273 [AC_ARG_ENABLE([silent-rules], [dnl
 1274 AS_HELP_STRING(
 1275   [--enable-silent-rules],
 1276   [less verbose build output (undo: "make V=1")])
 1277 AS_HELP_STRING(
 1278   [--disable-silent-rules],
 1279   [verbose build output (undo: "make V=0")])dnl
 1280 ])
 1281 case $enable_silent_rules in @%:@ (((
 1282   yes) AM_DEFAULT_VERBOSITY=0;;
 1283    no) AM_DEFAULT_VERBOSITY=1;;
 1284     *) AM_DEFAULT_VERBOSITY=m4_if([$1], [yes], [0], [1]);;
 1285 esac
 1286 dnl
 1287 dnl A few 'make' implementations (e.g., NonStop OS and NextStep)
 1288 dnl do not support nested variable expansions.
 1289 dnl See automake bug#9928 and bug#10237.
 1290 am_make=${MAKE-make}
 1291 AC_CACHE_CHECK([whether $am_make supports nested variables],
 1292    [am_cv_make_support_nested_variables],
 1293    [if AS_ECHO([['TRUE=$(BAR$(V))
 1294 BAR0=false
 1295 BAR1=true
 1296 V=1
 1297 am__doit:
 1298 	@$(TRUE)
 1299 .PHONY: am__doit']]) | $am_make -f - >/dev/null 2>&1; then
 1300   am_cv_make_support_nested_variables=yes
 1301 else
 1302   am_cv_make_support_nested_variables=no
 1303 fi])
 1304 if test $am_cv_make_support_nested_variables = yes; then
 1305   dnl Using '$V' instead of '$(V)' breaks IRIX make.
 1306   AM_V='$(V)'
 1307   AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
 1308 else
 1309   AM_V=$AM_DEFAULT_VERBOSITY
 1310   AM_DEFAULT_V=$AM_DEFAULT_VERBOSITY
 1311 fi
 1312 AC_SUBST([AM_V])dnl
 1313 AM_SUBST_NOTMAKE([AM_V])dnl
 1314 AC_SUBST([AM_DEFAULT_V])dnl
 1315 AM_SUBST_NOTMAKE([AM_DEFAULT_V])dnl
 1316 AC_SUBST([AM_DEFAULT_VERBOSITY])dnl
 1317 AM_BACKSLASH='\'
 1318 AC_SUBST([AM_BACKSLASH])dnl
 1319 _AM_SUBST_NOTMAKE([AM_BACKSLASH])dnl
 1320 ])
 1321 
 1322 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
 1323 #
 1324 # This file is free software; the Free Software Foundation
 1325 # gives unlimited permission to copy and/or distribute it,
 1326 # with or without modifications, as long as this notice is preserved.
 1327 
 1328 # AM_PROG_INSTALL_STRIP
 1329 # ---------------------
 1330 # One issue with vendor 'install' (even GNU) is that you can't
 1331 # specify the program used to strip binaries.  This is especially
 1332 # annoying in cross-compiling environments, where the build's strip
 1333 # is unlikely to handle the host's binaries.
 1334 # Fortunately install-sh will honor a STRIPPROG variable, so we
 1335 # always use install-sh in "make install-strip", and initialize
 1336 # STRIPPROG with the value of the STRIP variable (set by the user).
 1337 AC_DEFUN([AM_PROG_INSTALL_STRIP],
 1338 [AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
 1339 # Installed binaries are usually stripped using 'strip' when the user
 1340 # run "make install-strip".  However 'strip' might not be the right
 1341 # tool to use in cross-compilation environments, therefore Automake
 1342 # will honor the 'STRIP' environment variable to overrule this program.
 1343 dnl Don't test for $cross_compiling = yes, because it might be 'maybe'.
 1344 if test "$cross_compiling" != no; then
 1345   AC_CHECK_TOOL([STRIP], [strip], :)
 1346 fi
 1347 INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
 1348 AC_SUBST([INSTALL_STRIP_PROGRAM])])
 1349 
 1350 # Copyright (C) 2006-2018 Free Software Foundation, Inc.
 1351 #
 1352 # This file is free software; the Free Software Foundation
 1353 # gives unlimited permission to copy and/or distribute it,
 1354 # with or without modifications, as long as this notice is preserved.
 1355 
 1356 # _AM_SUBST_NOTMAKE(VARIABLE)
 1357 # ---------------------------
 1358 # Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in.
 1359 # This macro is traced by Automake.
 1360 AC_DEFUN([_AM_SUBST_NOTMAKE])
 1361 
 1362 # AM_SUBST_NOTMAKE(VARIABLE)
 1363 # --------------------------
 1364 # Public sister of _AM_SUBST_NOTMAKE.
 1365 AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
 1366 
 1367 # Check how to create a tarball.                            -*- Autoconf -*-
 1368 
 1369 # Copyright (C) 2004-2018 Free Software Foundation, Inc.
 1370 #
 1371 # This file is free software; the Free Software Foundation
 1372 # gives unlimited permission to copy and/or distribute it,
 1373 # with or without modifications, as long as this notice is preserved.
 1374 
 1375 # _AM_PROG_TAR(FORMAT)
 1376 # --------------------
 1377 # Check how to create a tarball in format FORMAT.
 1378 # FORMAT should be one of 'v7', 'ustar', or 'pax'.
 1379 #
 1380 # Substitute a variable $(am__tar) that is a command
 1381 # writing to stdout a FORMAT-tarball containing the directory
 1382 # $tardir.
 1383 #     tardir=directory && $(am__tar) > result.tar
 1384 #
 1385 # Substitute a variable $(am__untar) that extract such
 1386 # a tarball read from stdin.
 1387 #     $(am__untar) < result.tar
 1388 #
 1389 AC_DEFUN([_AM_PROG_TAR],
 1390 [# Always define AMTAR for backward compatibility.  Yes, it's still used
 1391 # in the wild :-(  We should find a proper way to deprecate it ...
 1392 AC_SUBST([AMTAR], ['$${TAR-tar}'])
 1393 
 1394 # We'll loop over all known methods to create a tar archive until one works.
 1395 _am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
 1396 
 1397 m4_if([$1], [v7],
 1398   [am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'],
 1399 
 1400   [m4_case([$1],
 1401     [ustar],
 1402      [# The POSIX 1988 'ustar' format is defined with fixed-size fields.
 1403       # There is notably a 21 bits limit for the UID and the GID.  In fact,
 1404       # the 'pax' utility can hang on bigger UID/GID (see automake bug#8343
 1405       # and bug#13588).
 1406       am_max_uid=2097151 # 2^21 - 1
 1407       am_max_gid=$am_max_uid
 1408       # The $UID and $GID variables are not portable, so we need to resort
 1409       # to the POSIX-mandated id(1) utility.  Errors in the 'id' calls
 1410       # below are definitely unexpected, so allow the users to see them
 1411       # (that is, avoid stderr redirection).
 1412       am_uid=`id -u || echo unknown`
 1413       am_gid=`id -g || echo unknown`
 1414       AC_MSG_CHECKING([whether UID '$am_uid' is supported by ustar format])
 1415       if test $am_uid -le $am_max_uid; then
 1416          AC_MSG_RESULT([yes])
 1417       else
 1418          AC_MSG_RESULT([no])
 1419          _am_tools=none
 1420       fi
 1421       AC_MSG_CHECKING([whether GID '$am_gid' is supported by ustar format])
 1422       if test $am_gid -le $am_max_gid; then
 1423          AC_MSG_RESULT([yes])
 1424       else
 1425         AC_MSG_RESULT([no])
 1426         _am_tools=none
 1427       fi],
 1428 
 1429   [pax],
 1430     [],
 1431 
 1432   [m4_fatal([Unknown tar format])])
 1433 
 1434   AC_MSG_CHECKING([how to create a $1 tar archive])
 1435 
 1436   # Go ahead even if we have the value already cached.  We do so because we
 1437   # need to set the values for the 'am__tar' and 'am__untar' variables.
 1438   _am_tools=${am_cv_prog_tar_$1-$_am_tools}
 1439 
 1440   for _am_tool in $_am_tools; do
 1441     case $_am_tool in
 1442     gnutar)
 1443       for _am_tar in tar gnutar gtar; do
 1444         AM_RUN_LOG([$_am_tar --version]) && break
 1445       done
 1446       am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"'
 1447       am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"'
 1448       am__untar="$_am_tar -xf -"
 1449       ;;
 1450     plaintar)
 1451       # Must skip GNU tar: if it does not support --format= it doesn't create
 1452       # ustar tarball either.
 1453       (tar --version) >/dev/null 2>&1 && continue
 1454       am__tar='tar chf - "$$tardir"'
 1455       am__tar_='tar chf - "$tardir"'
 1456       am__untar='tar xf -'
 1457       ;;
 1458     pax)
 1459       am__tar='pax -L -x $1 -w "$$tardir"'
 1460       am__tar_='pax -L -x $1 -w "$tardir"'
 1461       am__untar='pax -r'
 1462       ;;
 1463     cpio)
 1464       am__tar='find "$$tardir" -print | cpio -o -H $1 -L'
 1465       am__tar_='find "$tardir" -print | cpio -o -H $1 -L'
 1466       am__untar='cpio -i -H $1 -d'
 1467       ;;
 1468     none)
 1469       am__tar=false
 1470       am__tar_=false
 1471       am__untar=false
 1472       ;;
 1473     esac
 1474 
 1475     # If the value was cached, stop now.  We just wanted to have am__tar
 1476     # and am__untar set.
 1477     test -n "${am_cv_prog_tar_$1}" && break
 1478 
 1479     # tar/untar a dummy directory, and stop if the command works.
 1480     rm -rf conftest.dir
 1481     mkdir conftest.dir
 1482     echo GrepMe > conftest.dir/file
 1483     AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar])
 1484     rm -rf conftest.dir
 1485     if test -s conftest.tar; then
 1486       AM_RUN_LOG([$am__untar <conftest.tar])
 1487       AM_RUN_LOG([cat conftest.dir/file])
 1488       grep GrepMe conftest.dir/file >/dev/null 2>&1 && break
 1489     fi
 1490   done
 1491   rm -rf conftest.dir
 1492 
 1493   AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])
 1494   AC_MSG_RESULT([$am_cv_prog_tar_$1])])
 1495 
 1496 AC_SUBST([am__tar])
 1497 AC_SUBST([am__untar])
 1498 ]) # _AM_PROG_TAR
 1499 
 1500 m4_include([m4/libtool.m4])
 1501 m4_include([m4/ltoptions.m4])
 1502 m4_include([m4/ltsugar.m4])
 1503 m4_include([m4/ltversion.m4])
 1504 m4_include([m4/lt~obsolete.m4])
 1505 m4_include([m4/weston.m4])