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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 dnl pkg.m4 - Macros to locate and utilise pkg-config.   -*- Autoconf -*-
   24 dnl serial 11 (pkg-config-0.29.1)
   25 dnl
   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 # Copyright (C) 2002-2018 Free Software Foundation, Inc.
  300 #
  301 # This file is free software; the Free Software Foundation
  302 # gives unlimited permission to copy and/or distribute it,
  303 # with or without modifications, as long as this notice is preserved.
  304 
  305 # AM_AUTOMAKE_VERSION(VERSION)
  306 # ----------------------------
  307 # Automake X.Y traces this macro to ensure aclocal.m4 has been
  308 # generated from the m4 files accompanying Automake X.Y.
  309 # (This private macro should not be called outside this file.)
  310 AC_DEFUN([AM_AUTOMAKE_VERSION],
  311 [am__api_version='1.16'
  312 dnl Some users find AM_AUTOMAKE_VERSION and mistake it for a way to
  313 dnl require some minimum version.  Point them to the right macro.
  314 m4_if([$1], [1.16.1], [],
  315       [AC_FATAL([Do not call $0, use AM_INIT_AUTOMAKE([$1]).])])dnl
  316 ])
  317 
  318 # _AM_AUTOCONF_VERSION(VERSION)
  319 # -----------------------------
  320 # aclocal traces this macro to find the Autoconf version.
  321 # This is a private macro too.  Using m4_define simplifies
  322 # the logic in aclocal, which can simply ignore this definition.
  323 m4_define([_AM_AUTOCONF_VERSION], [])
  324 
  325 # AM_SET_CURRENT_AUTOMAKE_VERSION
  326 # -------------------------------
  327 # Call AM_AUTOMAKE_VERSION and AM_AUTOMAKE_VERSION so they can be traced.
  328 # This function is AC_REQUIREd by AM_INIT_AUTOMAKE.
  329 AC_DEFUN([AM_SET_CURRENT_AUTOMAKE_VERSION],
  330 [AM_AUTOMAKE_VERSION([1.16.1])dnl
  331 m4_ifndef([AC_AUTOCONF_VERSION],
  332   [m4_copy([m4_PACKAGE_VERSION], [AC_AUTOCONF_VERSION])])dnl
  333 _AM_AUTOCONF_VERSION(m4_defn([AC_AUTOCONF_VERSION]))])
  334 
  335 # AM_AUX_DIR_EXPAND                                         -*- Autoconf -*-
  336 
  337 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
  338 #
  339 # This file is free software; the Free Software Foundation
  340 # gives unlimited permission to copy and/or distribute it,
  341 # with or without modifications, as long as this notice is preserved.
  342 
  343 # For projects using AC_CONFIG_AUX_DIR([foo]), Autoconf sets
  344 # $ac_aux_dir to '$srcdir/foo'.  In other projects, it is set to
  345 # '$srcdir', '$srcdir/..', or '$srcdir/../..'.
  346 #
  347 # Of course, Automake must honor this variable whenever it calls a
  348 # tool from the auxiliary directory.  The problem is that $srcdir (and
  349 # therefore $ac_aux_dir as well) can be either absolute or relative,
  350 # depending on how configure is run.  This is pretty annoying, since
  351 # it makes $ac_aux_dir quite unusable in subdirectories: in the top
  352 # source directory, any form will work fine, but in subdirectories a
  353 # relative path needs to be adjusted first.
  354 #
  355 # $ac_aux_dir/missing
  356 #    fails when called from a subdirectory if $ac_aux_dir is relative
  357 # $top_srcdir/$ac_aux_dir/missing
  358 #    fails if $ac_aux_dir is absolute,
  359 #    fails when called from a subdirectory in a VPATH build with
  360 #          a relative $ac_aux_dir
  361 #
  362 # The reason of the latter failure is that $top_srcdir and $ac_aux_dir
  363 # are both prefixed by $srcdir.  In an in-source build this is usually
  364 # harmless because $srcdir is '.', but things will broke when you
  365 # start a VPATH build or use an absolute $srcdir.
  366 #
  367 # So we could use something similar to $top_srcdir/$ac_aux_dir/missing,
  368 # iff we strip the leading $srcdir from $ac_aux_dir.  That would be:
  369 #   am_aux_dir='\$(top_srcdir)/'`expr "$ac_aux_dir" : "$srcdir//*\(.*\)"`
  370 # and then we would define $MISSING as
  371 #   MISSING="\${SHELL} $am_aux_dir/missing"
  372 # This will work as long as MISSING is not called from configure, because
  373 # unfortunately $(top_srcdir) has no meaning in configure.
  374 # However there are other variables, like CC, which are often used in
  375 # configure, and could therefore not use this "fixed" $ac_aux_dir.
  376 #
  377 # Another solution, used here, is to always expand $ac_aux_dir to an
  378 # absolute PATH.  The drawback is that using absolute paths prevent a
  379 # configured tree to be moved without reconfiguration.
  380 
  381 AC_DEFUN([AM_AUX_DIR_EXPAND],
  382 [AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT])dnl
  383 # Expand $ac_aux_dir to an absolute path.
  384 am_aux_dir=`cd "$ac_aux_dir" && pwd`
  385 ])
  386 
  387 # AM_COND_IF                                            -*- Autoconf -*-
  388 
  389 # Copyright (C) 2008-2018 Free Software Foundation, Inc.
  390 #
  391 # This file is free software; the Free Software Foundation
  392 # gives unlimited permission to copy and/or distribute it,
  393 # with or without modifications, as long as this notice is preserved.
  394 
  395 # _AM_COND_IF
  396 # _AM_COND_ELSE
  397 # _AM_COND_ENDIF
  398 # --------------
  399 # These macros are only used for tracing.
  400 m4_define([_AM_COND_IF])
  401 m4_define([_AM_COND_ELSE])
  402 m4_define([_AM_COND_ENDIF])
  403 
  404 # AM_COND_IF(COND, [IF-TRUE], [IF-FALSE])
  405 # ---------------------------------------
  406 # If the shell condition COND is true, execute IF-TRUE, otherwise execute
  407 # IF-FALSE.  Allow automake to learn about conditional instantiating macros
  408 # (the AC_CONFIG_FOOS).
  409 AC_DEFUN([AM_COND_IF],
  410 [m4_ifndef([_AM_COND_VALUE_$1],
  411 	   [m4_fatal([$0: no such condition "$1"])])dnl
  412 _AM_COND_IF([$1])dnl
  413 if test -z "$$1_TRUE"; then :
  414   m4_n([$2])[]dnl
  415 m4_ifval([$3],
  416 [_AM_COND_ELSE([$1])dnl
  417 else
  418   $3
  419 ])dnl
  420 _AM_COND_ENDIF([$1])dnl
  421 fi[]dnl
  422 ])
  423 
  424 # AM_CONDITIONAL                                            -*- Autoconf -*-
  425 
  426 # Copyright (C) 1997-2018 Free Software Foundation, Inc.
  427 #
  428 # This file is free software; the Free Software Foundation
  429 # gives unlimited permission to copy and/or distribute it,
  430 # with or without modifications, as long as this notice is preserved.
  431 
  432 # AM_CONDITIONAL(NAME, SHELL-CONDITION)
  433 # -------------------------------------
  434 # Define a conditional.
  435 AC_DEFUN([AM_CONDITIONAL],
  436 [AC_PREREQ([2.52])dnl
  437  m4_if([$1], [TRUE],  [AC_FATAL([$0: invalid condition: $1])],
  438        [$1], [FALSE], [AC_FATAL([$0: invalid condition: $1])])dnl
  439 AC_SUBST([$1_TRUE])dnl
  440 AC_SUBST([$1_FALSE])dnl
  441 _AM_SUBST_NOTMAKE([$1_TRUE])dnl
  442 _AM_SUBST_NOTMAKE([$1_FALSE])dnl
  443 m4_define([_AM_COND_VALUE_$1], [$2])dnl
  444 if $2; then
  445   $1_TRUE=
  446   $1_FALSE='#'
  447 else
  448   $1_TRUE='#'
  449   $1_FALSE=
  450 fi
  451 AC_CONFIG_COMMANDS_PRE(
  452 [if test -z "${$1_TRUE}" && test -z "${$1_FALSE}"; then
  453   AC_MSG_ERROR([[conditional "$1" was never defined.
  454 Usually this means the macro was only invoked conditionally.]])
  455 fi])])
  456 
  457 # Copyright (C) 1999-2018 Free Software Foundation, Inc.
  458 #
  459 # This file is free software; the Free Software Foundation
  460 # gives unlimited permission to copy and/or distribute it,
  461 # with or without modifications, as long as this notice is preserved.
  462 
  463 
  464 # There are a few dirty hacks below to avoid letting 'AC_PROG_CC' be
  465 # written in clear, in which case automake, when reading aclocal.m4,
  466 # will think it sees a *use*, and therefore will trigger all it's
  467 # C support machinery.  Also note that it means that autoscan, seeing
  468 # CC etc. in the Makefile, will ask for an AC_PROG_CC use...
  469 
  470 
  471 # _AM_DEPENDENCIES(NAME)
  472 # ----------------------
  473 # See how the compiler implements dependency checking.
  474 # NAME is "CC", "CXX", "OBJC", "OBJCXX", "UPC", or "GJC".
  475 # We try a few techniques and use that to set a single cache variable.
  476 #
  477 # We don't AC_REQUIRE the corresponding AC_PROG_CC since the latter was
  478 # modified to invoke _AM_DEPENDENCIES(CC); we would have a circular
  479 # dependency, and given that the user is not expected to run this macro,
  480 # just rely on AC_PROG_CC.
  481 AC_DEFUN([_AM_DEPENDENCIES],
  482 [AC_REQUIRE([AM_SET_DEPDIR])dnl
  483 AC_REQUIRE([AM_OUTPUT_DEPENDENCY_COMMANDS])dnl
  484 AC_REQUIRE([AM_MAKE_INCLUDE])dnl
  485 AC_REQUIRE([AM_DEP_TRACK])dnl
  486 
  487 m4_if([$1], [CC],   [depcc="$CC"   am_compiler_list=],
  488       [$1], [CXX],  [depcc="$CXX"  am_compiler_list=],
  489       [$1], [OBJC], [depcc="$OBJC" am_compiler_list='gcc3 gcc'],
  490       [$1], [OBJCXX], [depcc="$OBJCXX" am_compiler_list='gcc3 gcc'],
  491       [$1], [UPC],  [depcc="$UPC"  am_compiler_list=],
  492       [$1], [GCJ],  [depcc="$GCJ"  am_compiler_list='gcc3 gcc'],
  493                     [depcc="$$1"   am_compiler_list=])
  494 
  495 AC_CACHE_CHECK([dependency style of $depcc],
  496                [am_cv_$1_dependencies_compiler_type],
  497 [if test -z "$AMDEP_TRUE" && test -f "$am_depcomp"; then
  498   # We make a subdir and do the tests there.  Otherwise we can end up
  499   # making bogus files that we don't know about and never remove.  For
  500   # instance it was reported that on HP-UX the gcc test will end up
  501   # making a dummy file named 'D' -- because '-MD' means "put the output
  502   # in D".
  503   rm -rf conftest.dir
  504   mkdir conftest.dir
  505   # Copy depcomp to subdir because otherwise we won't find it if we're
  506   # using a relative directory.
  507   cp "$am_depcomp" conftest.dir
  508   cd conftest.dir
  509   # We will build objects and dependencies in a subdirectory because
  510   # it helps to detect inapplicable dependency modes.  For instance
  511   # both Tru64's cc and ICC support -MD to output dependencies as a
  512   # side effect of compilation, but ICC will put the dependencies in
  513   # the current directory while Tru64 will put them in the object
  514   # directory.
  515   mkdir sub
  516 
  517   am_cv_$1_dependencies_compiler_type=none
  518   if test "$am_compiler_list" = ""; then
  519      am_compiler_list=`sed -n ['s/^#*\([a-zA-Z0-9]*\))$/\1/p'] < ./depcomp`
  520   fi
  521   am__universal=false
  522   m4_case([$1], [CC],
  523     [case " $depcc " in #(
  524      *\ -arch\ *\ -arch\ *) am__universal=true ;;
  525      esac],
  526     [CXX],
  527     [case " $depcc " in #(
  528      *\ -arch\ *\ -arch\ *) am__universal=true ;;
  529      esac])
  530 
  531   for depmode in $am_compiler_list; do
  532     # Setup a source with many dependencies, because some compilers
  533     # like to wrap large dependency lists on column 80 (with \), and
  534     # we should not choose a depcomp mode which is confused by this.
  535     #
  536     # We need to recreate these files for each test, as the compiler may
  537     # overwrite some of them when testing with obscure command lines.
  538     # This happens at least with the AIX C compiler.
  539     : > sub/conftest.c
  540     for i in 1 2 3 4 5 6; do
  541       echo '#include "conftst'$i'.h"' >> sub/conftest.c
  542       # Using ": > sub/conftst$i.h" creates only sub/conftst1.h with
  543       # Solaris 10 /bin/sh.
  544       echo '/* dummy */' > sub/conftst$i.h
  545     done
  546     echo "${am__include} ${am__quote}sub/conftest.Po${am__quote}" > confmf
  547 
  548     # We check with '-c' and '-o' for the sake of the "dashmstdout"
  549     # mode.  It turns out that the SunPro C++ compiler does not properly
  550     # handle '-M -o', and we need to detect this.  Also, some Intel
  551     # versions had trouble with output in subdirs.
  552     am__obj=sub/conftest.${OBJEXT-o}
  553     am__minus_obj="-o $am__obj"
  554     case $depmode in
  555     gcc)
  556       # This depmode causes a compiler race in universal mode.
  557       test "$am__universal" = false || continue
  558       ;;
  559     nosideeffect)
  560       # After this tag, mechanisms are not by side-effect, so they'll
  561       # only be used when explicitly requested.
  562       if test "x$enable_dependency_tracking" = xyes; then
  563 	continue
  564       else
  565 	break
  566       fi
  567       ;;
  568     msvc7 | msvc7msys | msvisualcpp | msvcmsys)
  569       # This compiler won't grok '-c -o', but also, the minuso test has
  570       # not run yet.  These depmodes are late enough in the game, and
  571       # so weak that their functioning should not be impacted.
  572       am__obj=conftest.${OBJEXT-o}
  573       am__minus_obj=
  574       ;;
  575     none) break ;;
  576     esac
  577     if depmode=$depmode \
  578        source=sub/conftest.c object=$am__obj \
  579        depfile=sub/conftest.Po tmpdepfile=sub/conftest.TPo \
  580        $SHELL ./depcomp $depcc -c $am__minus_obj sub/conftest.c \
  581          >/dev/null 2>conftest.err &&
  582        grep sub/conftst1.h sub/conftest.Po > /dev/null 2>&1 &&
  583        grep sub/conftst6.h sub/conftest.Po > /dev/null 2>&1 &&
  584        grep $am__obj sub/conftest.Po > /dev/null 2>&1 &&
  585        ${MAKE-make} -s -f confmf > /dev/null 2>&1; then
  586       # icc doesn't choke on unknown options, it will just issue warnings
  587       # or remarks (even with -Werror).  So we grep stderr for any message
  588       # that says an option was ignored or not supported.
  589       # When given -MP, icc 7.0 and 7.1 complain thusly:
  590       #   icc: Command line warning: ignoring option '-M'; no argument required
  591       # The diagnosis changed in icc 8.0:
  592       #   icc: Command line remark: option '-MP' not supported
  593       if (grep 'ignoring option' conftest.err ||
  594           grep 'not supported' conftest.err) >/dev/null 2>&1; then :; else
  595         am_cv_$1_dependencies_compiler_type=$depmode
  596         break
  597       fi
  598     fi
  599   done
  600 
  601   cd ..
  602   rm -rf conftest.dir
  603 else
  604   am_cv_$1_dependencies_compiler_type=none
  605 fi
  606 ])
  607 AC_SUBST([$1DEPMODE], [depmode=$am_cv_$1_dependencies_compiler_type])
  608 AM_CONDITIONAL([am__fastdep$1], [
  609   test "x$enable_dependency_tracking" != xno \
  610   && test "$am_cv_$1_dependencies_compiler_type" = gcc3])
  611 ])
  612 
  613 
  614 # AM_SET_DEPDIR
  615 # -------------
  616 # Choose a directory name for dependency files.
  617 # This macro is AC_REQUIREd in _AM_DEPENDENCIES.
  618 AC_DEFUN([AM_SET_DEPDIR],
  619 [AC_REQUIRE([AM_SET_LEADING_DOT])dnl
  620 AC_SUBST([DEPDIR], ["${am__leading_dot}deps"])dnl
  621 ])
  622 
  623 
  624 # AM_DEP_TRACK
  625 # ------------
  626 AC_DEFUN([AM_DEP_TRACK],
  627 [AC_ARG_ENABLE([dependency-tracking], [dnl
  628 AS_HELP_STRING(
  629   [--enable-dependency-tracking],
  630   [do not reject slow dependency extractors])
  631 AS_HELP_STRING(
  632   [--disable-dependency-tracking],
  633   [speeds up one-time build])])
  634 if test "x$enable_dependency_tracking" != xno; then
  635   am_depcomp="$ac_aux_dir/depcomp"
  636   AMDEPBACKSLASH='\'
  637   am__nodep='_no'
  638 fi
  639 AM_CONDITIONAL([AMDEP], [test "x$enable_dependency_tracking" != xno])
  640 AC_SUBST([AMDEPBACKSLASH])dnl
  641 _AM_SUBST_NOTMAKE([AMDEPBACKSLASH])dnl
  642 AC_SUBST([am__nodep])dnl
  643 _AM_SUBST_NOTMAKE([am__nodep])dnl
  644 ])
  645 
  646 # Generate code to set up dependency tracking.              -*- Autoconf -*-
  647 
  648 # Copyright (C) 1999-2018 Free Software Foundation, Inc.
  649 #
  650 # This file is free software; the Free Software Foundation
  651 # gives unlimited permission to copy and/or distribute it,
  652 # with or without modifications, as long as this notice is preserved.
  653 
  654 # _AM_OUTPUT_DEPENDENCY_COMMANDS
  655 # ------------------------------
  656 AC_DEFUN([_AM_OUTPUT_DEPENDENCY_COMMANDS],
  657 [{
  658   # Older Autoconf quotes --file arguments for eval, but not when files
  659   # are listed without --file.  Let's play safe and only enable the eval
  660   # if we detect the quoting.
  661   # TODO: see whether this extra hack can be removed once we start
  662   # requiring Autoconf 2.70 or later.
  663   AS_CASE([$CONFIG_FILES],
  664           [*\'*], [eval set x "$CONFIG_FILES"],
  665           [*], [set x $CONFIG_FILES])
  666   shift
  667   # Used to flag and report bootstrapping failures.
  668   am_rc=0
  669   for am_mf
  670   do
  671     # Strip MF so we end up with the name of the file.
  672     am_mf=`AS_ECHO(["$am_mf"]) | sed -e 's/:.*$//'`
  673     # Check whether this is an Automake generated Makefile which includes
  674     # dependency-tracking related rules and includes.
  675     # Grep'ing the whole file directly is not great: AIX grep has a line
  676     # limit of 2048, but all sed's we know have understand at least 4000.
  677     sed -n 's,^am--depfiles:.*,X,p' "$am_mf" | grep X >/dev/null 2>&1 \
  678       || continue
  679     am_dirpart=`AS_DIRNAME(["$am_mf"])`
  680     am_filepart=`AS_BASENAME(["$am_mf"])`
  681     AM_RUN_LOG([cd "$am_dirpart" \
  682       && sed -e '/# am--include-marker/d' "$am_filepart" \
  683         | $MAKE -f - am--depfiles]) || am_rc=$?
  684   done
  685   if test $am_rc -ne 0; then
  686     AC_MSG_FAILURE([Something went wrong bootstrapping makefile fragments
  687     for automatic dependency tracking.  Try re-running configure with the
  688     '--disable-dependency-tracking' option to at least be able to build
  689     the package (albeit without support for automatic dependency tracking).])
  690   fi
  691   AS_UNSET([am_dirpart])
  692   AS_UNSET([am_filepart])
  693   AS_UNSET([am_mf])
  694   AS_UNSET([am_rc])
  695   rm -f conftest-deps.mk
  696 }
  697 ])# _AM_OUTPUT_DEPENDENCY_COMMANDS
  698 
  699 
  700 # AM_OUTPUT_DEPENDENCY_COMMANDS
  701 # -----------------------------
  702 # This macro should only be invoked once -- use via AC_REQUIRE.
  703 #
  704 # This code is only required when automatic dependency tracking is enabled.
  705 # This creates each '.Po' and '.Plo' makefile fragment that we'll need in
  706 # order to bootstrap the dependency handling code.
  707 AC_DEFUN([AM_OUTPUT_DEPENDENCY_COMMANDS],
  708 [AC_CONFIG_COMMANDS([depfiles],
  709      [test x"$AMDEP_TRUE" != x"" || _AM_OUTPUT_DEPENDENCY_COMMANDS],
  710      [AMDEP_TRUE="$AMDEP_TRUE" MAKE="${MAKE-make}"])])
  711 
  712 # Do all the work for Automake.                             -*- Autoconf -*-
  713 
  714 # Copyright (C) 1996-2018 Free Software Foundation, Inc.
  715 #
  716 # This file is free software; the Free Software Foundation
  717 # gives unlimited permission to copy and/or distribute it,
  718 # with or without modifications, as long as this notice is preserved.
  719 
  720 # This macro actually does too much.  Some checks are only needed if
  721 # your package does certain things.  But this isn't really a big deal.
  722 
  723 dnl Redefine AC_PROG_CC to automatically invoke _AM_PROG_CC_C_O.
  724 m4_define([AC_PROG_CC],
  725 m4_defn([AC_PROG_CC])
  726 [_AM_PROG_CC_C_O
  727 ])
  728 
  729 # AM_INIT_AUTOMAKE(PACKAGE, VERSION, [NO-DEFINE])
  730 # AM_INIT_AUTOMAKE([OPTIONS])
  731 # -----------------------------------------------
  732 # The call with PACKAGE and VERSION arguments is the old style
  733 # call (pre autoconf-2.50), which is being phased out.  PACKAGE
  734 # and VERSION should now be passed to AC_INIT and removed from
  735 # the call to AM_INIT_AUTOMAKE.
  736 # We support both call styles for the transition.  After
  737 # the next Automake release, Autoconf can make the AC_INIT
  738 # arguments mandatory, and then we can depend on a new Autoconf
  739 # release and drop the old call support.
  740 AC_DEFUN([AM_INIT_AUTOMAKE],
  741 [AC_PREREQ([2.65])dnl
  742 dnl Autoconf wants to disallow AM_ names.  We explicitly allow
  743 dnl the ones we care about.
  744 m4_pattern_allow([^AM_[A-Z]+FLAGS$])dnl
  745 AC_REQUIRE([AM_SET_CURRENT_AUTOMAKE_VERSION])dnl
  746 AC_REQUIRE([AC_PROG_INSTALL])dnl
  747 if test "`cd $srcdir && pwd`" != "`pwd`"; then
  748   # Use -I$(srcdir) only when $(srcdir) != ., so that make's output
  749   # is not polluted with repeated "-I."
  750   AC_SUBST([am__isrc], [' -I$(srcdir)'])_AM_SUBST_NOTMAKE([am__isrc])dnl
  751   # test to see if srcdir already configured
  752   if test -f $srcdir/config.status; then
  753     AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
  754   fi
  755 fi
  756 
  757 # test whether we have cygpath
  758 if test -z "$CYGPATH_W"; then
  759   if (cygpath --version) >/dev/null 2>/dev/null; then
  760     CYGPATH_W='cygpath -w'
  761   else
  762     CYGPATH_W=echo
  763   fi
  764 fi
  765 AC_SUBST([CYGPATH_W])
  766 
  767 # Define the identity of the package.
  768 dnl Distinguish between old-style and new-style calls.
  769 m4_ifval([$2],
  770 [AC_DIAGNOSE([obsolete],
  771              [$0: two- and three-arguments forms are deprecated.])
  772 m4_ifval([$3], [_AM_SET_OPTION([no-define])])dnl
  773  AC_SUBST([PACKAGE], [$1])dnl
  774  AC_SUBST([VERSION], [$2])],
  775 [_AM_SET_OPTIONS([$1])dnl
  776 dnl Diagnose old-style AC_INIT with new-style AM_AUTOMAKE_INIT.
  777 m4_if(
  778   m4_ifdef([AC_PACKAGE_NAME], [ok]):m4_ifdef([AC_PACKAGE_VERSION], [ok]),
  779   [ok:ok],,
  780   [m4_fatal([AC_INIT should be called with package and version arguments])])dnl
  781  AC_SUBST([PACKAGE], ['AC_PACKAGE_TARNAME'])dnl
  782  AC_SUBST([VERSION], ['AC_PACKAGE_VERSION'])])dnl
  783 
  784 _AM_IF_OPTION([no-define],,
  785 [AC_DEFINE_UNQUOTED([PACKAGE], ["$PACKAGE"], [Name of package])
  786  AC_DEFINE_UNQUOTED([VERSION], ["$VERSION"], [Version number of package])])dnl
  787 
  788 # Some tools Automake needs.
  789 AC_REQUIRE([AM_SANITY_CHECK])dnl
  790 AC_REQUIRE([AC_ARG_PROGRAM])dnl
  791 AM_MISSING_PROG([ACLOCAL], [aclocal-${am__api_version}])
  792 AM_MISSING_PROG([AUTOCONF], [autoconf])
  793 AM_MISSING_PROG([AUTOMAKE], [automake-${am__api_version}])
  794 AM_MISSING_PROG([AUTOHEADER], [autoheader])
  795 AM_MISSING_PROG([MAKEINFO], [makeinfo])
  796 AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
  797 AC_REQUIRE([AM_PROG_INSTALL_STRIP])dnl
  798 AC_REQUIRE([AC_PROG_MKDIR_P])dnl
  799 # For better backward compatibility.  To be removed once Automake 1.9.x
  800 # dies out for good.  For more background, see:
  801 # <https://lists.gnu.org/archive/html/automake/2012-07/msg00001.html>
  802 # <https://lists.gnu.org/archive/html/automake/2012-07/msg00014.html>
  803 AC_SUBST([mkdir_p], ['$(MKDIR_P)'])
  804 # We need awk for the "check" target (and possibly the TAP driver).  The
  805 # system "awk" is bad on some platforms.
  806 AC_REQUIRE([AC_PROG_AWK])dnl
  807 AC_REQUIRE([AC_PROG_MAKE_SET])dnl
  808 AC_REQUIRE([AM_SET_LEADING_DOT])dnl
  809 _AM_IF_OPTION([tar-ustar], [_AM_PROG_TAR([ustar])],
  810 	      [_AM_IF_OPTION([tar-pax], [_AM_PROG_TAR([pax])],
  811 			     [_AM_PROG_TAR([v7])])])
  812 _AM_IF_OPTION([no-dependencies],,
  813 [AC_PROVIDE_IFELSE([AC_PROG_CC],
  814 		  [_AM_DEPENDENCIES([CC])],
  815 		  [m4_define([AC_PROG_CC],
  816 			     m4_defn([AC_PROG_CC])[_AM_DEPENDENCIES([CC])])])dnl
  817 AC_PROVIDE_IFELSE([AC_PROG_CXX],
  818 		  [_AM_DEPENDENCIES([CXX])],
  819 		  [m4_define([AC_PROG_CXX],
  820 			     m4_defn([AC_PROG_CXX])[_AM_DEPENDENCIES([CXX])])])dnl
  821 AC_PROVIDE_IFELSE([AC_PROG_OBJC],
  822 		  [_AM_DEPENDENCIES([OBJC])],
  823 		  [m4_define([AC_PROG_OBJC],
  824 			     m4_defn([AC_PROG_OBJC])[_AM_DEPENDENCIES([OBJC])])])dnl
  825 AC_PROVIDE_IFELSE([AC_PROG_OBJCXX],
  826 		  [_AM_DEPENDENCIES([OBJCXX])],
  827 		  [m4_define([AC_PROG_OBJCXX],
  828 			     m4_defn([AC_PROG_OBJCXX])[_AM_DEPENDENCIES([OBJCXX])])])dnl
  829 ])
  830 AC_REQUIRE([AM_SILENT_RULES])dnl
  831 dnl The testsuite driver may need to know about EXEEXT, so add the
  832 dnl 'am__EXEEXT' conditional if _AM_COMPILER_EXEEXT was seen.  This
  833 dnl macro is hooked onto _AC_COMPILER_EXEEXT early, see below.
  834 AC_CONFIG_COMMANDS_PRE(dnl
  835 [m4_provide_if([_AM_COMPILER_EXEEXT],
  836   [AM_CONDITIONAL([am__EXEEXT], [test -n "$EXEEXT"])])])dnl
  837 
  838 # POSIX will say in a future version that running "rm -f" with no argument
  839 # is OK; and we want to be able to make that assumption in our Makefile
  840 # recipes.  So use an aggressive probe to check that the usage we want is
  841 # actually supported "in the wild" to an acceptable degree.
  842 # See automake bug#10828.
  843 # To make any issue more visible, cause the running configure to be aborted
  844 # by default if the 'rm' program in use doesn't match our expectations; the
  845 # user can still override this though.
  846 if rm -f && rm -fr && rm -rf; then : OK; else
  847   cat >&2 <<'END'
  848 Oops!
  849 
  850 Your 'rm' program seems unable to run without file operands specified
  851 on the command line, even when the '-f' option is present.  This is contrary
  852 to the behaviour of most rm programs out there, and not conforming with
  853 the upcoming POSIX standard: <http://austingroupbugs.net/view.php?id=542>
  854 
  855 Please tell bug-automake@gnu.org about your system, including the value
  856 of your $PATH and any error possibly output before this message.  This
  857 can help us improve future automake versions.
  858 
  859 END
  860   if test x"$ACCEPT_INFERIOR_RM_PROGRAM" = x"yes"; then
  861     echo 'Configuration will proceed anyway, since you have set the' >&2
  862     echo 'ACCEPT_INFERIOR_RM_PROGRAM variable to "yes"' >&2
  863     echo >&2
  864   else
  865     cat >&2 <<'END'
  866 Aborting the configuration process, to ensure you take notice of the issue.
  867 
  868 You can download and install GNU coreutils to get an 'rm' implementation
  869 that behaves properly: <https://www.gnu.org/software/coreutils/>.
  870 
  871 If you want to complete the configuration process using your problematic
  872 'rm' anyway, export the environment variable ACCEPT_INFERIOR_RM_PROGRAM
  873 to "yes", and re-run configure.
  874 
  875 END
  876     AC_MSG_ERROR([Your 'rm' program is bad, sorry.])
  877   fi
  878 fi
  879 dnl The trailing newline in this macro's definition is deliberate, for
  880 dnl backward compatibility and to allow trailing 'dnl'-style comments
  881 dnl after the AM_INIT_AUTOMAKE invocation. See automake bug#16841.
  882 ])
  883 
  884 dnl Hook into '_AC_COMPILER_EXEEXT' early to learn its expansion.  Do not
  885 dnl add the conditional right here, as _AC_COMPILER_EXEEXT may be further
  886 dnl mangled by Autoconf and run in a shell conditional statement.
  887 m4_define([_AC_COMPILER_EXEEXT],
  888 m4_defn([_AC_COMPILER_EXEEXT])[m4_provide([_AM_COMPILER_EXEEXT])])
  889 
  890 # When config.status generates a header, we must update the stamp-h file.
  891 # This file resides in the same directory as the config header
  892 # that is generated.  The stamp files are numbered to have different names.
  893 
  894 # Autoconf calls _AC_AM_CONFIG_HEADER_HOOK (when defined) in the
  895 # loop where config.status creates the headers, so we can generate
  896 # our stamp files there.
  897 AC_DEFUN([_AC_AM_CONFIG_HEADER_HOOK],
  898 [# Compute $1's index in $config_headers.
  899 _am_arg=$1
  900 _am_stamp_count=1
  901 for _am_header in $config_headers :; do
  902   case $_am_header in
  903     $_am_arg | $_am_arg:* )
  904       break ;;
  905     * )
  906       _am_stamp_count=`expr $_am_stamp_count + 1` ;;
  907   esac
  908 done
  909 echo "timestamp for $_am_arg" >`AS_DIRNAME(["$_am_arg"])`/stamp-h[]$_am_stamp_count])
  910 
  911 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
  912 #
  913 # This file is free software; the Free Software Foundation
  914 # gives unlimited permission to copy and/or distribute it,
  915 # with or without modifications, as long as this notice is preserved.
  916 
  917 # AM_PROG_INSTALL_SH
  918 # ------------------
  919 # Define $install_sh.
  920 AC_DEFUN([AM_PROG_INSTALL_SH],
  921 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
  922 if test x"${install_sh+set}" != xset; then
  923   case $am_aux_dir in
  924   *\ * | *\	*)
  925     install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
  926   *)
  927     install_sh="\${SHELL} $am_aux_dir/install-sh"
  928   esac
  929 fi
  930 AC_SUBST([install_sh])])
  931 
  932 # Copyright (C) 2003-2018 Free Software Foundation, Inc.
  933 #
  934 # This file is free software; the Free Software Foundation
  935 # gives unlimited permission to copy and/or distribute it,
  936 # with or without modifications, as long as this notice is preserved.
  937 
  938 # Check whether the underlying file-system supports filenames
  939 # with a leading dot.  For instance MS-DOS doesn't.
  940 AC_DEFUN([AM_SET_LEADING_DOT],
  941 [rm -rf .tst 2>/dev/null
  942 mkdir .tst 2>/dev/null
  943 if test -d .tst; then
  944   am__leading_dot=.
  945 else
  946   am__leading_dot=_
  947 fi
  948 rmdir .tst 2>/dev/null
  949 AC_SUBST([am__leading_dot])])
  950 
  951 # Add --enable-maintainer-mode option to configure.         -*- Autoconf -*-
  952 # From Jim Meyering
  953 
  954 # Copyright (C) 1996-2018 Free Software Foundation, Inc.
  955 #
  956 # This file is free software; the Free Software Foundation
  957 # gives unlimited permission to copy and/or distribute it,
  958 # with or without modifications, as long as this notice is preserved.
  959 
  960 # AM_MAINTAINER_MODE([DEFAULT-MODE])
  961 # ----------------------------------
  962 # Control maintainer-specific portions of Makefiles.
  963 # Default is to disable them, unless 'enable' is passed literally.
  964 # For symmetry, 'disable' may be passed as well.  Anyway, the user
  965 # can override the default with the --enable/--disable switch.
  966 AC_DEFUN([AM_MAINTAINER_MODE],
  967 [m4_case(m4_default([$1], [disable]),
  968        [enable], [m4_define([am_maintainer_other], [disable])],
  969        [disable], [m4_define([am_maintainer_other], [enable])],
  970        [m4_define([am_maintainer_other], [enable])
  971         m4_warn([syntax], [unexpected argument to AM@&t@_MAINTAINER_MODE: $1])])
  972 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
  973   dnl maintainer-mode's default is 'disable' unless 'enable' is passed
  974   AC_ARG_ENABLE([maintainer-mode],
  975     [AS_HELP_STRING([--]am_maintainer_other[-maintainer-mode],
  976       am_maintainer_other[ make rules and dependencies not useful
  977       (and sometimes confusing) to the casual installer])],
  978     [USE_MAINTAINER_MODE=$enableval],
  979     [USE_MAINTAINER_MODE=]m4_if(am_maintainer_other, [enable], [no], [yes]))
  980   AC_MSG_RESULT([$USE_MAINTAINER_MODE])
  981   AM_CONDITIONAL([MAINTAINER_MODE], [test $USE_MAINTAINER_MODE = yes])
  982   MAINT=$MAINTAINER_MODE_TRUE
  983   AC_SUBST([MAINT])dnl
  984 ]
  985 )
  986 
  987 # Check to see how 'make' treats includes.	            -*- Autoconf -*-
  988 
  989 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
  990 #
  991 # This file is free software; the Free Software Foundation
  992 # gives unlimited permission to copy and/or distribute it,
  993 # with or without modifications, as long as this notice is preserved.
  994 
  995 # AM_MAKE_INCLUDE()
  996 # -----------------
  997 # Check whether make has an 'include' directive that can support all
  998 # the idioms we need for our automatic dependency tracking code.
  999 AC_DEFUN([AM_MAKE_INCLUDE],
 1000 [AC_MSG_CHECKING([whether ${MAKE-make} supports the include directive])
 1001 cat > confinc.mk << 'END'
 1002 am__doit:
 1003 	@echo this is the am__doit target >confinc.out
 1004 .PHONY: am__doit
 1005 END
 1006 am__include="#"
 1007 am__quote=
 1008 # BSD make does it like this.
 1009 echo '.include "confinc.mk" # ignored' > confmf.BSD
 1010 # Other make implementations (GNU, Solaris 10, AIX) do it like this.
 1011 echo 'include confinc.mk # ignored' > confmf.GNU
 1012 _am_result=no
 1013 for s in GNU BSD; do
 1014   AM_RUN_LOG([${MAKE-make} -f confmf.$s && cat confinc.out])
 1015   AS_CASE([$?:`cat confinc.out 2>/dev/null`],
 1016       ['0:this is the am__doit target'],
 1017       [AS_CASE([$s],
 1018           [BSD], [am__include='.include' am__quote='"'],
 1019           [am__include='include' am__quote=''])])
 1020   if test "$am__include" != "#"; then
 1021     _am_result="yes ($s style)"
 1022     break
 1023   fi
 1024 done
 1025 rm -f confinc.* confmf.*
 1026 AC_MSG_RESULT([${_am_result}])
 1027 AC_SUBST([am__include])])
 1028 AC_SUBST([am__quote])])
 1029 
 1030 # Fake the existence of programs that GNU maintainers use.  -*- Autoconf -*-
 1031 
 1032 # Copyright (C) 1997-2018 Free Software Foundation, Inc.
 1033 #
 1034 # This file is free software; the Free Software Foundation
 1035 # gives unlimited permission to copy and/or distribute it,
 1036 # with or without modifications, as long as this notice is preserved.
 1037 
 1038 # AM_MISSING_PROG(NAME, PROGRAM)
 1039 # ------------------------------
 1040 AC_DEFUN([AM_MISSING_PROG],
 1041 [AC_REQUIRE([AM_MISSING_HAS_RUN])
 1042 $1=${$1-"${am_missing_run}$2"}
 1043 AC_SUBST($1)])
 1044 
 1045 # AM_MISSING_HAS_RUN
 1046 # ------------------
 1047 # Define MISSING if not defined so far and test if it is modern enough.
 1048 # If it is, set am_missing_run to use it, otherwise, to nothing.
 1049 AC_DEFUN([AM_MISSING_HAS_RUN],
 1050 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
 1051 AC_REQUIRE_AUX_FILE([missing])dnl
 1052 if test x"${MISSING+set}" != xset; then
 1053   case $am_aux_dir in
 1054   *\ * | *\	*)
 1055     MISSING="\${SHELL} \"$am_aux_dir/missing\"" ;;
 1056   *)
 1057     MISSING="\${SHELL} $am_aux_dir/missing" ;;
 1058   esac
 1059 fi
 1060 # Use eval to expand $SHELL
 1061 if eval "$MISSING --is-lightweight"; then
 1062   am_missing_run="$MISSING "
 1063 else
 1064   am_missing_run=
 1065   AC_MSG_WARN(['missing' script is too old or missing])
 1066 fi
 1067 ])
 1068 
 1069 # Helper functions for option handling.                     -*- Autoconf -*-
 1070 
 1071 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
 1072 #
 1073 # This file is free software; the Free Software Foundation
 1074 # gives unlimited permission to copy and/or distribute it,
 1075 # with or without modifications, as long as this notice is preserved.
 1076 
 1077 # _AM_MANGLE_OPTION(NAME)
 1078 # -----------------------
 1079 AC_DEFUN([_AM_MANGLE_OPTION],
 1080 [[_AM_OPTION_]m4_bpatsubst($1, [[^a-zA-Z0-9_]], [_])])
 1081 
 1082 # _AM_SET_OPTION(NAME)
 1083 # --------------------
 1084 # Set option NAME.  Presently that only means defining a flag for this option.
 1085 AC_DEFUN([_AM_SET_OPTION],
 1086 [m4_define(_AM_MANGLE_OPTION([$1]), [1])])
 1087 
 1088 # _AM_SET_OPTIONS(OPTIONS)
 1089 # ------------------------
 1090 # OPTIONS is a space-separated list of Automake options.
 1091 AC_DEFUN([_AM_SET_OPTIONS],
 1092 [m4_foreach_w([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])])
 1093 
 1094 # _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET])
 1095 # -------------------------------------------
 1096 # Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
 1097 AC_DEFUN([_AM_IF_OPTION],
 1098 [m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])
 1099 
 1100 # Copyright (C) 1999-2018 Free Software Foundation, Inc.
 1101 #
 1102 # This file is free software; the Free Software Foundation
 1103 # gives unlimited permission to copy and/or distribute it,
 1104 # with or without modifications, as long as this notice is preserved.
 1105 
 1106 # _AM_PROG_CC_C_O
 1107 # ---------------
 1108 # Like AC_PROG_CC_C_O, but changed for automake.  We rewrite AC_PROG_CC
 1109 # to automatically call this.
 1110 AC_DEFUN([_AM_PROG_CC_C_O],
 1111 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
 1112 AC_REQUIRE_AUX_FILE([compile])dnl
 1113 AC_LANG_PUSH([C])dnl
 1114 AC_CACHE_CHECK(
 1115   [whether $CC understands -c and -o together],
 1116   [am_cv_prog_cc_c_o],
 1117   [AC_LANG_CONFTEST([AC_LANG_PROGRAM([])])
 1118   # Make sure it works both with $CC and with simple cc.
 1119   # Following AC_PROG_CC_C_O, we do the test twice because some
 1120   # compilers refuse to overwrite an existing .o file with -o,
 1121   # though they will create one.
 1122   am_cv_prog_cc_c_o=yes
 1123   for am_i in 1 2; do
 1124     if AM_RUN_LOG([$CC -c conftest.$ac_ext -o conftest2.$ac_objext]) \
 1125          && test -f conftest2.$ac_objext; then
 1126       : OK
 1127     else
 1128       am_cv_prog_cc_c_o=no
 1129       break
 1130     fi
 1131   done
 1132   rm -f core conftest*
 1133   unset am_i])
 1134 if test "$am_cv_prog_cc_c_o" != yes; then
 1135    # Losing compiler, so override with the script.
 1136    # FIXME: It is wrong to rewrite CC.
 1137    # But if we don't then we get into trouble of one sort or another.
 1138    # A longer-term fix would be to have automake use am__CC in this case,
 1139    # and then we could set am__CC="\$(top_srcdir)/compile \$(CC)"
 1140    CC="$am_aux_dir/compile $CC"
 1141 fi
 1142 AC_LANG_POP([C])])
 1143 
 1144 # For backward compatibility.
 1145 AC_DEFUN_ONCE([AM_PROG_CC_C_O], [AC_REQUIRE([AC_PROG_CC])])
 1146 
 1147 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
 1148 #
 1149 # This file is free software; the Free Software Foundation
 1150 # gives unlimited permission to copy and/or distribute it,
 1151 # with or without modifications, as long as this notice is preserved.
 1152 
 1153 # AM_RUN_LOG(COMMAND)
 1154 # -------------------
 1155 # Run COMMAND, save the exit status in ac_status, and log it.
 1156 # (This has been adapted from Autoconf's _AC_RUN_LOG macro.)
 1157 AC_DEFUN([AM_RUN_LOG],
 1158 [{ echo "$as_me:$LINENO: $1" >&AS_MESSAGE_LOG_FD
 1159    ($1) >&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD
 1160    ac_status=$?
 1161    echo "$as_me:$LINENO: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
 1162    (exit $ac_status); }])
 1163 
 1164 # Check to make sure that the build environment is sane.    -*- Autoconf -*-
 1165 
 1166 # Copyright (C) 1996-2018 Free Software Foundation, Inc.
 1167 #
 1168 # This file is free software; the Free Software Foundation
 1169 # gives unlimited permission to copy and/or distribute it,
 1170 # with or without modifications, as long as this notice is preserved.
 1171 
 1172 # AM_SANITY_CHECK
 1173 # ---------------
 1174 AC_DEFUN([AM_SANITY_CHECK],
 1175 [AC_MSG_CHECKING([whether build environment is sane])
 1176 # Reject unsafe characters in $srcdir or the absolute working directory
 1177 # name.  Accept space and tab only in the latter.
 1178 am_lf='
 1179 '
 1180 case `pwd` in
 1181   *[[\\\"\#\$\&\'\`$am_lf]]*)
 1182     AC_MSG_ERROR([unsafe absolute working directory name]);;
 1183 esac
 1184 case $srcdir in
 1185   *[[\\\"\#\$\&\'\`$am_lf\ \	]]*)
 1186     AC_MSG_ERROR([unsafe srcdir value: '$srcdir']);;
 1187 esac
 1188 
 1189 # Do 'set' in a subshell so we don't clobber the current shell's
 1190 # arguments.  Must try -L first in case configure is actually a
 1191 # symlink; some systems play weird games with the mod time of symlinks
 1192 # (eg FreeBSD returns the mod time of the symlink's containing
 1193 # directory).
 1194 if (
 1195    am_has_slept=no
 1196    for am_try in 1 2; do
 1197      echo "timestamp, slept: $am_has_slept" > conftest.file
 1198      set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
 1199      if test "$[*]" = "X"; then
 1200 	# -L didn't work.
 1201 	set X `ls -t "$srcdir/configure" conftest.file`
 1202      fi
 1203      if test "$[*]" != "X $srcdir/configure conftest.file" \
 1204 	&& test "$[*]" != "X conftest.file $srcdir/configure"; then
 1205 
 1206 	# If neither matched, then we have a broken ls.  This can happen
 1207 	# if, for instance, CONFIG_SHELL is bash and it inherits a
 1208 	# broken ls alias from the environment.  This has actually
 1209 	# happened.  Such a system could not be considered "sane".
 1210 	AC_MSG_ERROR([ls -t appears to fail.  Make sure there is not a broken
 1211   alias in your environment])
 1212      fi
 1213      if test "$[2]" = conftest.file || test $am_try -eq 2; then
 1214        break
 1215      fi
 1216      # Just in case.
 1217      sleep 1
 1218      am_has_slept=yes
 1219    done
 1220    test "$[2]" = conftest.file
 1221    )
 1222 then
 1223    # Ok.
 1224    :
 1225 else
 1226    AC_MSG_ERROR([newly created file is older than distributed files!
 1227 Check your system clock])
 1228 fi
 1229 AC_MSG_RESULT([yes])
 1230 # If we didn't sleep, we still need to ensure time stamps of config.status and
 1231 # generated files are strictly newer.
 1232 am_sleep_pid=
 1233 if grep 'slept: no' conftest.file >/dev/null 2>&1; then
 1234   ( sleep 1 ) &
 1235   am_sleep_pid=$!
 1236 fi
 1237 AC_CONFIG_COMMANDS_PRE(
 1238   [AC_MSG_CHECKING([that generated files are newer than configure])
 1239    if test -n "$am_sleep_pid"; then
 1240      # Hide warnings about reused PIDs.
 1241      wait $am_sleep_pid 2>/dev/null
 1242    fi
 1243    AC_MSG_RESULT([done])])
 1244 rm -f conftest.file
 1245 ])
 1246 
 1247 # Copyright (C) 2009-2018 Free Software Foundation, Inc.
 1248 #
 1249 # This file is free software; the Free Software Foundation
 1250 # gives unlimited permission to copy and/or distribute it,
 1251 # with or without modifications, as long as this notice is preserved.
 1252 
 1253 # AM_SILENT_RULES([DEFAULT])
 1254 # --------------------------
 1255 # Enable less verbose build rules; with the default set to DEFAULT
 1256 # ("yes" being less verbose, "no" or empty being verbose).
 1257 AC_DEFUN([AM_SILENT_RULES],
 1258 [AC_ARG_ENABLE([silent-rules], [dnl
 1259 AS_HELP_STRING(
 1260   [--enable-silent-rules],
 1261   [less verbose build output (undo: "make V=1")])
 1262 AS_HELP_STRING(
 1263   [--disable-silent-rules],
 1264   [verbose build output (undo: "make V=0")])dnl
 1265 ])
 1266 case $enable_silent_rules in @%:@ (((
 1267   yes) AM_DEFAULT_VERBOSITY=0;;
 1268    no) AM_DEFAULT_VERBOSITY=1;;
 1269     *) AM_DEFAULT_VERBOSITY=m4_if([$1], [yes], [0], [1]);;
 1270 esac
 1271 dnl
 1272 dnl A few 'make' implementations (e.g., NonStop OS and NextStep)
 1273 dnl do not support nested variable expansions.
 1274 dnl See automake bug#9928 and bug#10237.
 1275 am_make=${MAKE-make}
 1276 AC_CACHE_CHECK([whether $am_make supports nested variables],
 1277    [am_cv_make_support_nested_variables],
 1278    [if AS_ECHO([['TRUE=$(BAR$(V))
 1279 BAR0=false
 1280 BAR1=true
 1281 V=1
 1282 am__doit:
 1283 	@$(TRUE)
 1284 .PHONY: am__doit']]) | $am_make -f - >/dev/null 2>&1; then
 1285   am_cv_make_support_nested_variables=yes
 1286 else
 1287   am_cv_make_support_nested_variables=no
 1288 fi])
 1289 if test $am_cv_make_support_nested_variables = yes; then
 1290   dnl Using '$V' instead of '$(V)' breaks IRIX make.
 1291   AM_V='$(V)'
 1292   AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
 1293 else
 1294   AM_V=$AM_DEFAULT_VERBOSITY
 1295   AM_DEFAULT_V=$AM_DEFAULT_VERBOSITY
 1296 fi
 1297 AC_SUBST([AM_V])dnl
 1298 AM_SUBST_NOTMAKE([AM_V])dnl
 1299 AC_SUBST([AM_DEFAULT_V])dnl
 1300 AM_SUBST_NOTMAKE([AM_DEFAULT_V])dnl
 1301 AC_SUBST([AM_DEFAULT_VERBOSITY])dnl
 1302 AM_BACKSLASH='\'
 1303 AC_SUBST([AM_BACKSLASH])dnl
 1304 _AM_SUBST_NOTMAKE([AM_BACKSLASH])dnl
 1305 ])
 1306 
 1307 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
 1308 #
 1309 # This file is free software; the Free Software Foundation
 1310 # gives unlimited permission to copy and/or distribute it,
 1311 # with or without modifications, as long as this notice is preserved.
 1312 
 1313 # AM_PROG_INSTALL_STRIP
 1314 # ---------------------
 1315 # One issue with vendor 'install' (even GNU) is that you can't
 1316 # specify the program used to strip binaries.  This is especially
 1317 # annoying in cross-compiling environments, where the build's strip
 1318 # is unlikely to handle the host's binaries.
 1319 # Fortunately install-sh will honor a STRIPPROG variable, so we
 1320 # always use install-sh in "make install-strip", and initialize
 1321 # STRIPPROG with the value of the STRIP variable (set by the user).
 1322 AC_DEFUN([AM_PROG_INSTALL_STRIP],
 1323 [AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
 1324 # Installed binaries are usually stripped using 'strip' when the user
 1325 # run "make install-strip".  However 'strip' might not be the right
 1326 # tool to use in cross-compilation environments, therefore Automake
 1327 # will honor the 'STRIP' environment variable to overrule this program.
 1328 dnl Don't test for $cross_compiling = yes, because it might be 'maybe'.
 1329 if test "$cross_compiling" != no; then
 1330   AC_CHECK_TOOL([STRIP], [strip], :)
 1331 fi
 1332 INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
 1333 AC_SUBST([INSTALL_STRIP_PROGRAM])])
 1334 
 1335 # Copyright (C) 2006-2018 Free Software Foundation, Inc.
 1336 #
 1337 # This file is free software; the Free Software Foundation
 1338 # gives unlimited permission to copy and/or distribute it,
 1339 # with or without modifications, as long as this notice is preserved.
 1340 
 1341 # _AM_SUBST_NOTMAKE(VARIABLE)
 1342 # ---------------------------
 1343 # Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in.
 1344 # This macro is traced by Automake.
 1345 AC_DEFUN([_AM_SUBST_NOTMAKE])
 1346 
 1347 # AM_SUBST_NOTMAKE(VARIABLE)
 1348 # --------------------------
 1349 # Public sister of _AM_SUBST_NOTMAKE.
 1350 AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
 1351 
 1352 # Check how to create a tarball.                            -*- Autoconf -*-
 1353 
 1354 # Copyright (C) 2004-2018 Free Software Foundation, Inc.
 1355 #
 1356 # This file is free software; the Free Software Foundation
 1357 # gives unlimited permission to copy and/or distribute it,
 1358 # with or without modifications, as long as this notice is preserved.
 1359 
 1360 # _AM_PROG_TAR(FORMAT)
 1361 # --------------------
 1362 # Check how to create a tarball in format FORMAT.
 1363 # FORMAT should be one of 'v7', 'ustar', or 'pax'.
 1364 #
 1365 # Substitute a variable $(am__tar) that is a command
 1366 # writing to stdout a FORMAT-tarball containing the directory
 1367 # $tardir.
 1368 #     tardir=directory && $(am__tar) > result.tar
 1369 #
 1370 # Substitute a variable $(am__untar) that extract such
 1371 # a tarball read from stdin.
 1372 #     $(am__untar) < result.tar
 1373 #
 1374 AC_DEFUN([_AM_PROG_TAR],
 1375 [# Always define AMTAR for backward compatibility.  Yes, it's still used
 1376 # in the wild :-(  We should find a proper way to deprecate it ...
 1377 AC_SUBST([AMTAR], ['$${TAR-tar}'])
 1378 
 1379 # We'll loop over all known methods to create a tar archive until one works.
 1380 _am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
 1381 
 1382 m4_if([$1], [v7],
 1383   [am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'],
 1384 
 1385   [m4_case([$1],
 1386     [ustar],
 1387      [# The POSIX 1988 'ustar' format is defined with fixed-size fields.
 1388       # There is notably a 21 bits limit for the UID and the GID.  In fact,
 1389       # the 'pax' utility can hang on bigger UID/GID (see automake bug#8343
 1390       # and bug#13588).
 1391       am_max_uid=2097151 # 2^21 - 1
 1392       am_max_gid=$am_max_uid
 1393       # The $UID and $GID variables are not portable, so we need to resort
 1394       # to the POSIX-mandated id(1) utility.  Errors in the 'id' calls
 1395       # below are definitely unexpected, so allow the users to see them
 1396       # (that is, avoid stderr redirection).
 1397       am_uid=`id -u || echo unknown`
 1398       am_gid=`id -g || echo unknown`
 1399       AC_MSG_CHECKING([whether UID '$am_uid' is supported by ustar format])
 1400       if test $am_uid -le $am_max_uid; then
 1401          AC_MSG_RESULT([yes])
 1402       else
 1403          AC_MSG_RESULT([no])
 1404          _am_tools=none
 1405       fi
 1406       AC_MSG_CHECKING([whether GID '$am_gid' is supported by ustar format])
 1407       if test $am_gid -le $am_max_gid; then
 1408          AC_MSG_RESULT([yes])
 1409       else
 1410         AC_MSG_RESULT([no])
 1411         _am_tools=none
 1412       fi],
 1413 
 1414   [pax],
 1415     [],
 1416 
 1417   [m4_fatal([Unknown tar format])])
 1418 
 1419   AC_MSG_CHECKING([how to create a $1 tar archive])
 1420 
 1421   # Go ahead even if we have the value already cached.  We do so because we
 1422   # need to set the values for the 'am__tar' and 'am__untar' variables.
 1423   _am_tools=${am_cv_prog_tar_$1-$_am_tools}
 1424 
 1425   for _am_tool in $_am_tools; do
 1426     case $_am_tool in
 1427     gnutar)
 1428       for _am_tar in tar gnutar gtar; do
 1429         AM_RUN_LOG([$_am_tar --version]) && break
 1430       done
 1431       am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"'
 1432       am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"'
 1433       am__untar="$_am_tar -xf -"
 1434       ;;
 1435     plaintar)
 1436       # Must skip GNU tar: if it does not support --format= it doesn't create
 1437       # ustar tarball either.
 1438       (tar --version) >/dev/null 2>&1 && continue
 1439       am__tar='tar chf - "$$tardir"'
 1440       am__tar_='tar chf - "$tardir"'
 1441       am__untar='tar xf -'
 1442       ;;
 1443     pax)
 1444       am__tar='pax -L -x $1 -w "$$tardir"'
 1445       am__tar_='pax -L -x $1 -w "$tardir"'
 1446       am__untar='pax -r'
 1447       ;;
 1448     cpio)
 1449       am__tar='find "$$tardir" -print | cpio -o -H $1 -L'
 1450       am__tar_='find "$tardir" -print | cpio -o -H $1 -L'
 1451       am__untar='cpio -i -H $1 -d'
 1452       ;;
 1453     none)
 1454       am__tar=false
 1455       am__tar_=false
 1456       am__untar=false
 1457       ;;
 1458     esac
 1459 
 1460     # If the value was cached, stop now.  We just wanted to have am__tar
 1461     # and am__untar set.
 1462     test -n "${am_cv_prog_tar_$1}" && break
 1463 
 1464     # tar/untar a dummy directory, and stop if the command works.
 1465     rm -rf conftest.dir
 1466     mkdir conftest.dir
 1467     echo GrepMe > conftest.dir/file
 1468     AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar])
 1469     rm -rf conftest.dir
 1470     if test -s conftest.tar; then
 1471       AM_RUN_LOG([$am__untar <conftest.tar])
 1472       AM_RUN_LOG([cat conftest.dir/file])
 1473       grep GrepMe conftest.dir/file >/dev/null 2>&1 && break
 1474     fi
 1475   done
 1476   rm -rf conftest.dir
 1477 
 1478   AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])
 1479   AC_MSG_RESULT([$am_cv_prog_tar_$1])])
 1480 
 1481 AC_SUBST([am__tar])
 1482 AC_SUBST([am__untar])
 1483 ]) # _AM_PROG_TAR
 1484