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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 # Copyright (C) 2011-2018 Free Software Foundation, Inc.
  404 #
  405 # This file is free software; the Free Software Foundation
  406 # gives unlimited permission to copy and/or distribute it,
  407 # with or without modifications, as long as this notice is preserved.
  408 
  409 # AM_PROG_AR([ACT-IF-FAIL])
  410 # -------------------------
  411 # Try to determine the archiver interface, and trigger the ar-lib wrapper
  412 # if it is needed.  If the detection of archiver interface fails, run
  413 # ACT-IF-FAIL (default is to abort configure with a proper error message).
  414 AC_DEFUN([AM_PROG_AR],
  415 [AC_BEFORE([$0], [LT_INIT])dnl
  416 AC_BEFORE([$0], [AC_PROG_LIBTOOL])dnl
  417 AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
  418 AC_REQUIRE_AUX_FILE([ar-lib])dnl
  419 AC_CHECK_TOOLS([AR], [ar lib "link -lib"], [false])
  420 : ${AR=ar}
  421 
  422 AC_CACHE_CHECK([the archiver ($AR) interface], [am_cv_ar_interface],
  423   [AC_LANG_PUSH([C])
  424    am_cv_ar_interface=ar
  425    AC_COMPILE_IFELSE([AC_LANG_SOURCE([[int some_variable = 0;]])],
  426      [am_ar_try='$AR cru libconftest.a conftest.$ac_objext >&AS_MESSAGE_LOG_FD'
  427       AC_TRY_EVAL([am_ar_try])
  428       if test "$ac_status" -eq 0; then
  429         am_cv_ar_interface=ar
  430       else
  431         am_ar_try='$AR -NOLOGO -OUT:conftest.lib conftest.$ac_objext >&AS_MESSAGE_LOG_FD'
  432         AC_TRY_EVAL([am_ar_try])
  433         if test "$ac_status" -eq 0; then
  434           am_cv_ar_interface=lib
  435         else
  436           am_cv_ar_interface=unknown
  437         fi
  438       fi
  439       rm -f conftest.lib libconftest.a
  440      ])
  441    AC_LANG_POP([C])])
  442 
  443 case $am_cv_ar_interface in
  444 ar)
  445   ;;
  446 lib)
  447   # Microsoft lib, so override with the ar-lib wrapper script.
  448   # FIXME: It is wrong to rewrite AR.
  449   # But if we don't then we get into trouble of one sort or another.
  450   # A longer-term fix would be to have automake use am__AR in this case,
  451   # and then we could set am__AR="$am_aux_dir/ar-lib \$(AR)" or something
  452   # similar.
  453   AR="$am_aux_dir/ar-lib $AR"
  454   ;;
  455 unknown)
  456   m4_default([$1],
  457              [AC_MSG_ERROR([could not determine $AR interface])])
  458   ;;
  459 esac
  460 AC_SUBST([AR])dnl
  461 ])
  462 
  463 # AM_AUX_DIR_EXPAND                                         -*- Autoconf -*-
  464 
  465 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
  466 #
  467 # This file is free software; the Free Software Foundation
  468 # gives unlimited permission to copy and/or distribute it,
  469 # with or without modifications, as long as this notice is preserved.
  470 
  471 # For projects using AC_CONFIG_AUX_DIR([foo]), Autoconf sets
  472 # $ac_aux_dir to '$srcdir/foo'.  In other projects, it is set to
  473 # '$srcdir', '$srcdir/..', or '$srcdir/../..'.
  474 #
  475 # Of course, Automake must honor this variable whenever it calls a
  476 # tool from the auxiliary directory.  The problem is that $srcdir (and
  477 # therefore $ac_aux_dir as well) can be either absolute or relative,
  478 # depending on how configure is run.  This is pretty annoying, since
  479 # it makes $ac_aux_dir quite unusable in subdirectories: in the top
  480 # source directory, any form will work fine, but in subdirectories a
  481 # relative path needs to be adjusted first.
  482 #
  483 # $ac_aux_dir/missing
  484 #    fails when called from a subdirectory if $ac_aux_dir is relative
  485 # $top_srcdir/$ac_aux_dir/missing
  486 #    fails if $ac_aux_dir is absolute,
  487 #    fails when called from a subdirectory in a VPATH build with
  488 #          a relative $ac_aux_dir
  489 #
  490 # The reason of the latter failure is that $top_srcdir and $ac_aux_dir
  491 # are both prefixed by $srcdir.  In an in-source build this is usually
  492 # harmless because $srcdir is '.', but things will broke when you
  493 # start a VPATH build or use an absolute $srcdir.
  494 #
  495 # So we could use something similar to $top_srcdir/$ac_aux_dir/missing,
  496 # iff we strip the leading $srcdir from $ac_aux_dir.  That would be:
  497 #   am_aux_dir='\$(top_srcdir)/'`expr "$ac_aux_dir" : "$srcdir//*\(.*\)"`
  498 # and then we would define $MISSING as
  499 #   MISSING="\${SHELL} $am_aux_dir/missing"
  500 # This will work as long as MISSING is not called from configure, because
  501 # unfortunately $(top_srcdir) has no meaning in configure.
  502 # However there are other variables, like CC, which are often used in
  503 # configure, and could therefore not use this "fixed" $ac_aux_dir.
  504 #
  505 # Another solution, used here, is to always expand $ac_aux_dir to an
  506 # absolute PATH.  The drawback is that using absolute paths prevent a
  507 # configured tree to be moved without reconfiguration.
  508 
  509 AC_DEFUN([AM_AUX_DIR_EXPAND],
  510 [AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT])dnl
  511 # Expand $ac_aux_dir to an absolute path.
  512 am_aux_dir=`cd "$ac_aux_dir" && pwd`
  513 ])
  514 
  515 # AM_CONDITIONAL                                            -*- Autoconf -*-
  516 
  517 # Copyright (C) 1997-2018 Free Software Foundation, Inc.
  518 #
  519 # This file is free software; the Free Software Foundation
  520 # gives unlimited permission to copy and/or distribute it,
  521 # with or without modifications, as long as this notice is preserved.
  522 
  523 # AM_CONDITIONAL(NAME, SHELL-CONDITION)
  524 # -------------------------------------
  525 # Define a conditional.
  526 AC_DEFUN([AM_CONDITIONAL],
  527 [AC_PREREQ([2.52])dnl
  528  m4_if([$1], [TRUE],  [AC_FATAL([$0: invalid condition: $1])],
  529        [$1], [FALSE], [AC_FATAL([$0: invalid condition: $1])])dnl
  530 AC_SUBST([$1_TRUE])dnl
  531 AC_SUBST([$1_FALSE])dnl
  532 _AM_SUBST_NOTMAKE([$1_TRUE])dnl
  533 _AM_SUBST_NOTMAKE([$1_FALSE])dnl
  534 m4_define([_AM_COND_VALUE_$1], [$2])dnl
  535 if $2; then
  536   $1_TRUE=
  537   $1_FALSE='#'
  538 else
  539   $1_TRUE='#'
  540   $1_FALSE=
  541 fi
  542 AC_CONFIG_COMMANDS_PRE(
  543 [if test -z "${$1_TRUE}" && test -z "${$1_FALSE}"; then
  544   AC_MSG_ERROR([[conditional "$1" was never defined.
  545 Usually this means the macro was only invoked conditionally.]])
  546 fi])])
  547 
  548 # Copyright (C) 1999-2018 Free Software Foundation, Inc.
  549 #
  550 # This file is free software; the Free Software Foundation
  551 # gives unlimited permission to copy and/or distribute it,
  552 # with or without modifications, as long as this notice is preserved.
  553 
  554 
  555 # There are a few dirty hacks below to avoid letting 'AC_PROG_CC' be
  556 # written in clear, in which case automake, when reading aclocal.m4,
  557 # will think it sees a *use*, and therefore will trigger all it's
  558 # C support machinery.  Also note that it means that autoscan, seeing
  559 # CC etc. in the Makefile, will ask for an AC_PROG_CC use...
  560 
  561 
  562 # _AM_DEPENDENCIES(NAME)
  563 # ----------------------
  564 # See how the compiler implements dependency checking.
  565 # NAME is "CC", "CXX", "OBJC", "OBJCXX", "UPC", or "GJC".
  566 # We try a few techniques and use that to set a single cache variable.
  567 #
  568 # We don't AC_REQUIRE the corresponding AC_PROG_CC since the latter was
  569 # modified to invoke _AM_DEPENDENCIES(CC); we would have a circular
  570 # dependency, and given that the user is not expected to run this macro,
  571 # just rely on AC_PROG_CC.
  572 AC_DEFUN([_AM_DEPENDENCIES],
  573 [AC_REQUIRE([AM_SET_DEPDIR])dnl
  574 AC_REQUIRE([AM_OUTPUT_DEPENDENCY_COMMANDS])dnl
  575 AC_REQUIRE([AM_MAKE_INCLUDE])dnl
  576 AC_REQUIRE([AM_DEP_TRACK])dnl
  577 
  578 m4_if([$1], [CC],   [depcc="$CC"   am_compiler_list=],
  579       [$1], [CXX],  [depcc="$CXX"  am_compiler_list=],
  580       [$1], [OBJC], [depcc="$OBJC" am_compiler_list='gcc3 gcc'],
  581       [$1], [OBJCXX], [depcc="$OBJCXX" am_compiler_list='gcc3 gcc'],
  582       [$1], [UPC],  [depcc="$UPC"  am_compiler_list=],
  583       [$1], [GCJ],  [depcc="$GCJ"  am_compiler_list='gcc3 gcc'],
  584                     [depcc="$$1"   am_compiler_list=])
  585 
  586 AC_CACHE_CHECK([dependency style of $depcc],
  587                [am_cv_$1_dependencies_compiler_type],
  588 [if test -z "$AMDEP_TRUE" && test -f "$am_depcomp"; then
  589   # We make a subdir and do the tests there.  Otherwise we can end up
  590   # making bogus files that we don't know about and never remove.  For
  591   # instance it was reported that on HP-UX the gcc test will end up
  592   # making a dummy file named 'D' -- because '-MD' means "put the output
  593   # in D".
  594   rm -rf conftest.dir
  595   mkdir conftest.dir
  596   # Copy depcomp to subdir because otherwise we won't find it if we're
  597   # using a relative directory.
  598   cp "$am_depcomp" conftest.dir
  599   cd conftest.dir
  600   # We will build objects and dependencies in a subdirectory because
  601   # it helps to detect inapplicable dependency modes.  For instance
  602   # both Tru64's cc and ICC support -MD to output dependencies as a
  603   # side effect of compilation, but ICC will put the dependencies in
  604   # the current directory while Tru64 will put them in the object
  605   # directory.
  606   mkdir sub
  607 
  608   am_cv_$1_dependencies_compiler_type=none
  609   if test "$am_compiler_list" = ""; then
  610      am_compiler_list=`sed -n ['s/^#*\([a-zA-Z0-9]*\))$/\1/p'] < ./depcomp`
  611   fi
  612   am__universal=false
  613   m4_case([$1], [CC],
  614     [case " $depcc " in #(
  615      *\ -arch\ *\ -arch\ *) am__universal=true ;;
  616      esac],
  617     [CXX],
  618     [case " $depcc " in #(
  619      *\ -arch\ *\ -arch\ *) am__universal=true ;;
  620      esac])
  621 
  622   for depmode in $am_compiler_list; do
  623     # Setup a source with many dependencies, because some compilers
  624     # like to wrap large dependency lists on column 80 (with \), and
  625     # we should not choose a depcomp mode which is confused by this.
  626     #
  627     # We need to recreate these files for each test, as the compiler may
  628     # overwrite some of them when testing with obscure command lines.
  629     # This happens at least with the AIX C compiler.
  630     : > sub/conftest.c
  631     for i in 1 2 3 4 5 6; do
  632       echo '#include "conftst'$i'.h"' >> sub/conftest.c
  633       # Using ": > sub/conftst$i.h" creates only sub/conftst1.h with
  634       # Solaris 10 /bin/sh.
  635       echo '/* dummy */' > sub/conftst$i.h
  636     done
  637     echo "${am__include} ${am__quote}sub/conftest.Po${am__quote}" > confmf
  638 
  639     # We check with '-c' and '-o' for the sake of the "dashmstdout"
  640     # mode.  It turns out that the SunPro C++ compiler does not properly
  641     # handle '-M -o', and we need to detect this.  Also, some Intel
  642     # versions had trouble with output in subdirs.
  643     am__obj=sub/conftest.${OBJEXT-o}
  644     am__minus_obj="-o $am__obj"
  645     case $depmode in
  646     gcc)
  647       # This depmode causes a compiler race in universal mode.
  648       test "$am__universal" = false || continue
  649       ;;
  650     nosideeffect)
  651       # After this tag, mechanisms are not by side-effect, so they'll
  652       # only be used when explicitly requested.
  653       if test "x$enable_dependency_tracking" = xyes; then
  654 	continue
  655       else
  656 	break
  657       fi
  658       ;;
  659     msvc7 | msvc7msys | msvisualcpp | msvcmsys)
  660       # This compiler won't grok '-c -o', but also, the minuso test has
  661       # not run yet.  These depmodes are late enough in the game, and
  662       # so weak that their functioning should not be impacted.
  663       am__obj=conftest.${OBJEXT-o}
  664       am__minus_obj=
  665       ;;
  666     none) break ;;
  667     esac
  668     if depmode=$depmode \
  669        source=sub/conftest.c object=$am__obj \
  670        depfile=sub/conftest.Po tmpdepfile=sub/conftest.TPo \
  671        $SHELL ./depcomp $depcc -c $am__minus_obj sub/conftest.c \
  672          >/dev/null 2>conftest.err &&
  673        grep sub/conftst1.h sub/conftest.Po > /dev/null 2>&1 &&
  674        grep sub/conftst6.h sub/conftest.Po > /dev/null 2>&1 &&
  675        grep $am__obj sub/conftest.Po > /dev/null 2>&1 &&
  676        ${MAKE-make} -s -f confmf > /dev/null 2>&1; then
  677       # icc doesn't choke on unknown options, it will just issue warnings
  678       # or remarks (even with -Werror).  So we grep stderr for any message
  679       # that says an option was ignored or not supported.
  680       # When given -MP, icc 7.0 and 7.1 complain thusly:
  681       #   icc: Command line warning: ignoring option '-M'; no argument required
  682       # The diagnosis changed in icc 8.0:
  683       #   icc: Command line remark: option '-MP' not supported
  684       if (grep 'ignoring option' conftest.err ||
  685           grep 'not supported' conftest.err) >/dev/null 2>&1; then :; else
  686         am_cv_$1_dependencies_compiler_type=$depmode
  687         break
  688       fi
  689     fi
  690   done
  691 
  692   cd ..
  693   rm -rf conftest.dir
  694 else
  695   am_cv_$1_dependencies_compiler_type=none
  696 fi
  697 ])
  698 AC_SUBST([$1DEPMODE], [depmode=$am_cv_$1_dependencies_compiler_type])
  699 AM_CONDITIONAL([am__fastdep$1], [
  700   test "x$enable_dependency_tracking" != xno \
  701   && test "$am_cv_$1_dependencies_compiler_type" = gcc3])
  702 ])
  703 
  704 
  705 # AM_SET_DEPDIR
  706 # -------------
  707 # Choose a directory name for dependency files.
  708 # This macro is AC_REQUIREd in _AM_DEPENDENCIES.
  709 AC_DEFUN([AM_SET_DEPDIR],
  710 [AC_REQUIRE([AM_SET_LEADING_DOT])dnl
  711 AC_SUBST([DEPDIR], ["${am__leading_dot}deps"])dnl
  712 ])
  713 
  714 
  715 # AM_DEP_TRACK
  716 # ------------
  717 AC_DEFUN([AM_DEP_TRACK],
  718 [AC_ARG_ENABLE([dependency-tracking], [dnl
  719 AS_HELP_STRING(
  720   [--enable-dependency-tracking],
  721   [do not reject slow dependency extractors])
  722 AS_HELP_STRING(
  723   [--disable-dependency-tracking],
  724   [speeds up one-time build])])
  725 if test "x$enable_dependency_tracking" != xno; then
  726   am_depcomp="$ac_aux_dir/depcomp"
  727   AMDEPBACKSLASH='\'
  728   am__nodep='_no'
  729 fi
  730 AM_CONDITIONAL([AMDEP], [test "x$enable_dependency_tracking" != xno])
  731 AC_SUBST([AMDEPBACKSLASH])dnl
  732 _AM_SUBST_NOTMAKE([AMDEPBACKSLASH])dnl
  733 AC_SUBST([am__nodep])dnl
  734 _AM_SUBST_NOTMAKE([am__nodep])dnl
  735 ])
  736 
  737 # Generate code to set up dependency tracking.              -*- Autoconf -*-
  738 
  739 # Copyright (C) 1999-2018 Free Software Foundation, Inc.
  740 #
  741 # This file is free software; the Free Software Foundation
  742 # gives unlimited permission to copy and/or distribute it,
  743 # with or without modifications, as long as this notice is preserved.
  744 
  745 # _AM_OUTPUT_DEPENDENCY_COMMANDS
  746 # ------------------------------
  747 AC_DEFUN([_AM_OUTPUT_DEPENDENCY_COMMANDS],
  748 [{
  749   # Older Autoconf quotes --file arguments for eval, but not when files
  750   # are listed without --file.  Let's play safe and only enable the eval
  751   # if we detect the quoting.
  752   # TODO: see whether this extra hack can be removed once we start
  753   # requiring Autoconf 2.70 or later.
  754   AS_CASE([$CONFIG_FILES],
  755           [*\'*], [eval set x "$CONFIG_FILES"],
  756           [*], [set x $CONFIG_FILES])
  757   shift
  758   # Used to flag and report bootstrapping failures.
  759   am_rc=0
  760   for am_mf
  761   do
  762     # Strip MF so we end up with the name of the file.
  763     am_mf=`AS_ECHO(["$am_mf"]) | sed -e 's/:.*$//'`
  764     # Check whether this is an Automake generated Makefile which includes
  765     # dependency-tracking related rules and includes.
  766     # Grep'ing the whole file directly is not great: AIX grep has a line
  767     # limit of 2048, but all sed's we know have understand at least 4000.
  768     sed -n 's,^am--depfiles:.*,X,p' "$am_mf" | grep X >/dev/null 2>&1 \
  769       || continue
  770     am_dirpart=`AS_DIRNAME(["$am_mf"])`
  771     am_filepart=`AS_BASENAME(["$am_mf"])`
  772     AM_RUN_LOG([cd "$am_dirpart" \
  773       && sed -e '/# am--include-marker/d' "$am_filepart" \
  774         | $MAKE -f - am--depfiles]) || am_rc=$?
  775   done
  776   if test $am_rc -ne 0; then
  777     AC_MSG_FAILURE([Something went wrong bootstrapping makefile fragments
  778     for automatic dependency tracking.  Try re-running configure with the
  779     '--disable-dependency-tracking' option to at least be able to build
  780     the package (albeit without support for automatic dependency tracking).])
  781   fi
  782   AS_UNSET([am_dirpart])
  783   AS_UNSET([am_filepart])
  784   AS_UNSET([am_mf])
  785   AS_UNSET([am_rc])
  786   rm -f conftest-deps.mk
  787 }
  788 ])# _AM_OUTPUT_DEPENDENCY_COMMANDS
  789 
  790 
  791 # AM_OUTPUT_DEPENDENCY_COMMANDS
  792 # -----------------------------
  793 # This macro should only be invoked once -- use via AC_REQUIRE.
  794 #
  795 # This code is only required when automatic dependency tracking is enabled.
  796 # This creates each '.Po' and '.Plo' makefile fragment that we'll need in
  797 # order to bootstrap the dependency handling code.
  798 AC_DEFUN([AM_OUTPUT_DEPENDENCY_COMMANDS],
  799 [AC_CONFIG_COMMANDS([depfiles],
  800      [test x"$AMDEP_TRUE" != x"" || _AM_OUTPUT_DEPENDENCY_COMMANDS],
  801      [AMDEP_TRUE="$AMDEP_TRUE" MAKE="${MAKE-make}"])])
  802 
  803 # Do all the work for Automake.                             -*- Autoconf -*-
  804 
  805 # Copyright (C) 1996-2018 Free Software Foundation, Inc.
  806 #
  807 # This file is free software; the Free Software Foundation
  808 # gives unlimited permission to copy and/or distribute it,
  809 # with or without modifications, as long as this notice is preserved.
  810 
  811 # This macro actually does too much.  Some checks are only needed if
  812 # your package does certain things.  But this isn't really a big deal.
  813 
  814 dnl Redefine AC_PROG_CC to automatically invoke _AM_PROG_CC_C_O.
  815 m4_define([AC_PROG_CC],
  816 m4_defn([AC_PROG_CC])
  817 [_AM_PROG_CC_C_O
  818 ])
  819 
  820 # AM_INIT_AUTOMAKE(PACKAGE, VERSION, [NO-DEFINE])
  821 # AM_INIT_AUTOMAKE([OPTIONS])
  822 # -----------------------------------------------
  823 # The call with PACKAGE and VERSION arguments is the old style
  824 # call (pre autoconf-2.50), which is being phased out.  PACKAGE
  825 # and VERSION should now be passed to AC_INIT and removed from
  826 # the call to AM_INIT_AUTOMAKE.
  827 # We support both call styles for the transition.  After
  828 # the next Automake release, Autoconf can make the AC_INIT
  829 # arguments mandatory, and then we can depend on a new Autoconf
  830 # release and drop the old call support.
  831 AC_DEFUN([AM_INIT_AUTOMAKE],
  832 [AC_PREREQ([2.65])dnl
  833 dnl Autoconf wants to disallow AM_ names.  We explicitly allow
  834 dnl the ones we care about.
  835 m4_pattern_allow([^AM_[A-Z]+FLAGS$])dnl
  836 AC_REQUIRE([AM_SET_CURRENT_AUTOMAKE_VERSION])dnl
  837 AC_REQUIRE([AC_PROG_INSTALL])dnl
  838 if test "`cd $srcdir && pwd`" != "`pwd`"; then
  839   # Use -I$(srcdir) only when $(srcdir) != ., so that make's output
  840   # is not polluted with repeated "-I."
  841   AC_SUBST([am__isrc], [' -I$(srcdir)'])_AM_SUBST_NOTMAKE([am__isrc])dnl
  842   # test to see if srcdir already configured
  843   if test -f $srcdir/config.status; then
  844     AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
  845   fi
  846 fi
  847 
  848 # test whether we have cygpath
  849 if test -z "$CYGPATH_W"; then
  850   if (cygpath --version) >/dev/null 2>/dev/null; then
  851     CYGPATH_W='cygpath -w'
  852   else
  853     CYGPATH_W=echo
  854   fi
  855 fi
  856 AC_SUBST([CYGPATH_W])
  857 
  858 # Define the identity of the package.
  859 dnl Distinguish between old-style and new-style calls.
  860 m4_ifval([$2],
  861 [AC_DIAGNOSE([obsolete],
  862              [$0: two- and three-arguments forms are deprecated.])
  863 m4_ifval([$3], [_AM_SET_OPTION([no-define])])dnl
  864  AC_SUBST([PACKAGE], [$1])dnl
  865  AC_SUBST([VERSION], [$2])],
  866 [_AM_SET_OPTIONS([$1])dnl
  867 dnl Diagnose old-style AC_INIT with new-style AM_AUTOMAKE_INIT.
  868 m4_if(
  869   m4_ifdef([AC_PACKAGE_NAME], [ok]):m4_ifdef([AC_PACKAGE_VERSION], [ok]),
  870   [ok:ok],,
  871   [m4_fatal([AC_INIT should be called with package and version arguments])])dnl
  872  AC_SUBST([PACKAGE], ['AC_PACKAGE_TARNAME'])dnl
  873  AC_SUBST([VERSION], ['AC_PACKAGE_VERSION'])])dnl
  874 
  875 _AM_IF_OPTION([no-define],,
  876 [AC_DEFINE_UNQUOTED([PACKAGE], ["$PACKAGE"], [Name of package])
  877  AC_DEFINE_UNQUOTED([VERSION], ["$VERSION"], [Version number of package])])dnl
  878 
  879 # Some tools Automake needs.
  880 AC_REQUIRE([AM_SANITY_CHECK])dnl
  881 AC_REQUIRE([AC_ARG_PROGRAM])dnl
  882 AM_MISSING_PROG([ACLOCAL], [aclocal-${am__api_version}])
  883 AM_MISSING_PROG([AUTOCONF], [autoconf])
  884 AM_MISSING_PROG([AUTOMAKE], [automake-${am__api_version}])
  885 AM_MISSING_PROG([AUTOHEADER], [autoheader])
  886 AM_MISSING_PROG([MAKEINFO], [makeinfo])
  887 AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
  888 AC_REQUIRE([AM_PROG_INSTALL_STRIP])dnl
  889 AC_REQUIRE([AC_PROG_MKDIR_P])dnl
  890 # For better backward compatibility.  To be removed once Automake 1.9.x
  891 # dies out for good.  For more background, see:
  892 # <https://lists.gnu.org/archive/html/automake/2012-07/msg00001.html>
  893 # <https://lists.gnu.org/archive/html/automake/2012-07/msg00014.html>
  894 AC_SUBST([mkdir_p], ['$(MKDIR_P)'])
  895 # We need awk for the "check" target (and possibly the TAP driver).  The
  896 # system "awk" is bad on some platforms.
  897 AC_REQUIRE([AC_PROG_AWK])dnl
  898 AC_REQUIRE([AC_PROG_MAKE_SET])dnl
  899 AC_REQUIRE([AM_SET_LEADING_DOT])dnl
  900 _AM_IF_OPTION([tar-ustar], [_AM_PROG_TAR([ustar])],
  901 	      [_AM_IF_OPTION([tar-pax], [_AM_PROG_TAR([pax])],
  902 			     [_AM_PROG_TAR([v7])])])
  903 _AM_IF_OPTION([no-dependencies],,
  904 [AC_PROVIDE_IFELSE([AC_PROG_CC],
  905 		  [_AM_DEPENDENCIES([CC])],
  906 		  [m4_define([AC_PROG_CC],
  907 			     m4_defn([AC_PROG_CC])[_AM_DEPENDENCIES([CC])])])dnl
  908 AC_PROVIDE_IFELSE([AC_PROG_CXX],
  909 		  [_AM_DEPENDENCIES([CXX])],
  910 		  [m4_define([AC_PROG_CXX],
  911 			     m4_defn([AC_PROG_CXX])[_AM_DEPENDENCIES([CXX])])])dnl
  912 AC_PROVIDE_IFELSE([AC_PROG_OBJC],
  913 		  [_AM_DEPENDENCIES([OBJC])],
  914 		  [m4_define([AC_PROG_OBJC],
  915 			     m4_defn([AC_PROG_OBJC])[_AM_DEPENDENCIES([OBJC])])])dnl
  916 AC_PROVIDE_IFELSE([AC_PROG_OBJCXX],
  917 		  [_AM_DEPENDENCIES([OBJCXX])],
  918 		  [m4_define([AC_PROG_OBJCXX],
  919 			     m4_defn([AC_PROG_OBJCXX])[_AM_DEPENDENCIES([OBJCXX])])])dnl
  920 ])
  921 AC_REQUIRE([AM_SILENT_RULES])dnl
  922 dnl The testsuite driver may need to know about EXEEXT, so add the
  923 dnl 'am__EXEEXT' conditional if _AM_COMPILER_EXEEXT was seen.  This
  924 dnl macro is hooked onto _AC_COMPILER_EXEEXT early, see below.
  925 AC_CONFIG_COMMANDS_PRE(dnl
  926 [m4_provide_if([_AM_COMPILER_EXEEXT],
  927   [AM_CONDITIONAL([am__EXEEXT], [test -n "$EXEEXT"])])])dnl
  928 
  929 # POSIX will say in a future version that running "rm -f" with no argument
  930 # is OK; and we want to be able to make that assumption in our Makefile
  931 # recipes.  So use an aggressive probe to check that the usage we want is
  932 # actually supported "in the wild" to an acceptable degree.
  933 # See automake bug#10828.
  934 # To make any issue more visible, cause the running configure to be aborted
  935 # by default if the 'rm' program in use doesn't match our expectations; the
  936 # user can still override this though.
  937 if rm -f && rm -fr && rm -rf; then : OK; else
  938   cat >&2 <<'END'
  939 Oops!
  940 
  941 Your 'rm' program seems unable to run without file operands specified
  942 on the command line, even when the '-f' option is present.  This is contrary
  943 to the behaviour of most rm programs out there, and not conforming with
  944 the upcoming POSIX standard: <http://austingroupbugs.net/view.php?id=542>
  945 
  946 Please tell bug-automake@gnu.org about your system, including the value
  947 of your $PATH and any error possibly output before this message.  This
  948 can help us improve future automake versions.
  949 
  950 END
  951   if test x"$ACCEPT_INFERIOR_RM_PROGRAM" = x"yes"; then
  952     echo 'Configuration will proceed anyway, since you have set the' >&2
  953     echo 'ACCEPT_INFERIOR_RM_PROGRAM variable to "yes"' >&2
  954     echo >&2
  955   else
  956     cat >&2 <<'END'
  957 Aborting the configuration process, to ensure you take notice of the issue.
  958 
  959 You can download and install GNU coreutils to get an 'rm' implementation
  960 that behaves properly: <https://www.gnu.org/software/coreutils/>.
  961 
  962 If you want to complete the configuration process using your problematic
  963 'rm' anyway, export the environment variable ACCEPT_INFERIOR_RM_PROGRAM
  964 to "yes", and re-run configure.
  965 
  966 END
  967     AC_MSG_ERROR([Your 'rm' program is bad, sorry.])
  968   fi
  969 fi
  970 dnl The trailing newline in this macro's definition is deliberate, for
  971 dnl backward compatibility and to allow trailing 'dnl'-style comments
  972 dnl after the AM_INIT_AUTOMAKE invocation. See automake bug#16841.
  973 ])
  974 
  975 dnl Hook into '_AC_COMPILER_EXEEXT' early to learn its expansion.  Do not
  976 dnl add the conditional right here, as _AC_COMPILER_EXEEXT may be further
  977 dnl mangled by Autoconf and run in a shell conditional statement.
  978 m4_define([_AC_COMPILER_EXEEXT],
  979 m4_defn([_AC_COMPILER_EXEEXT])[m4_provide([_AM_COMPILER_EXEEXT])])
  980 
  981 # When config.status generates a header, we must update the stamp-h file.
  982 # This file resides in the same directory as the config header
  983 # that is generated.  The stamp files are numbered to have different names.
  984 
  985 # Autoconf calls _AC_AM_CONFIG_HEADER_HOOK (when defined) in the
  986 # loop where config.status creates the headers, so we can generate
  987 # our stamp files there.
  988 AC_DEFUN([_AC_AM_CONFIG_HEADER_HOOK],
  989 [# Compute $1's index in $config_headers.
  990 _am_arg=$1
  991 _am_stamp_count=1
  992 for _am_header in $config_headers :; do
  993   case $_am_header in
  994     $_am_arg | $_am_arg:* )
  995       break ;;
  996     * )
  997       _am_stamp_count=`expr $_am_stamp_count + 1` ;;
  998   esac
  999 done
 1000 echo "timestamp for $_am_arg" >`AS_DIRNAME(["$_am_arg"])`/stamp-h[]$_am_stamp_count])
 1001 
 1002 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
 1003 #
 1004 # This file is free software; the Free Software Foundation
 1005 # gives unlimited permission to copy and/or distribute it,
 1006 # with or without modifications, as long as this notice is preserved.
 1007 
 1008 # AM_PROG_INSTALL_SH
 1009 # ------------------
 1010 # Define $install_sh.
 1011 AC_DEFUN([AM_PROG_INSTALL_SH],
 1012 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
 1013 if test x"${install_sh+set}" != xset; then
 1014   case $am_aux_dir in
 1015   *\ * | *\	*)
 1016     install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
 1017   *)
 1018     install_sh="\${SHELL} $am_aux_dir/install-sh"
 1019   esac
 1020 fi
 1021 AC_SUBST([install_sh])])
 1022 
 1023 # Copyright (C) 2003-2018 Free Software Foundation, Inc.
 1024 #
 1025 # This file is free software; the Free Software Foundation
 1026 # gives unlimited permission to copy and/or distribute it,
 1027 # with or without modifications, as long as this notice is preserved.
 1028 
 1029 # Check whether the underlying file-system supports filenames
 1030 # with a leading dot.  For instance MS-DOS doesn't.
 1031 AC_DEFUN([AM_SET_LEADING_DOT],
 1032 [rm -rf .tst 2>/dev/null
 1033 mkdir .tst 2>/dev/null
 1034 if test -d .tst; then
 1035   am__leading_dot=.
 1036 else
 1037   am__leading_dot=_
 1038 fi
 1039 rmdir .tst 2>/dev/null
 1040 AC_SUBST([am__leading_dot])])
 1041 
 1042 # Check to see how 'make' treats includes.	            -*- Autoconf -*-
 1043 
 1044 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
 1045 #
 1046 # This file is free software; the Free Software Foundation
 1047 # gives unlimited permission to copy and/or distribute it,
 1048 # with or without modifications, as long as this notice is preserved.
 1049 
 1050 # AM_MAKE_INCLUDE()
 1051 # -----------------
 1052 # Check whether make has an 'include' directive that can support all
 1053 # the idioms we need for our automatic dependency tracking code.
 1054 AC_DEFUN([AM_MAKE_INCLUDE],
 1055 [AC_MSG_CHECKING([whether ${MAKE-make} supports the include directive])
 1056 cat > confinc.mk << 'END'
 1057 am__doit:
 1058 	@echo this is the am__doit target >confinc.out
 1059 .PHONY: am__doit
 1060 END
 1061 am__include="#"
 1062 am__quote=
 1063 # BSD make does it like this.
 1064 echo '.include "confinc.mk" # ignored' > confmf.BSD
 1065 # Other make implementations (GNU, Solaris 10, AIX) do it like this.
 1066 echo 'include confinc.mk # ignored' > confmf.GNU
 1067 _am_result=no
 1068 for s in GNU BSD; do
 1069   AM_RUN_LOG([${MAKE-make} -f confmf.$s && cat confinc.out])
 1070   AS_CASE([$?:`cat confinc.out 2>/dev/null`],
 1071       ['0:this is the am__doit target'],
 1072       [AS_CASE([$s],
 1073           [BSD], [am__include='.include' am__quote='"'],
 1074           [am__include='include' am__quote=''])])
 1075   if test "$am__include" != "#"; then
 1076     _am_result="yes ($s style)"
 1077     break
 1078   fi
 1079 done
 1080 rm -f confinc.* confmf.*
 1081 AC_MSG_RESULT([${_am_result}])
 1082 AC_SUBST([am__include])])
 1083 AC_SUBST([am__quote])])
 1084 
 1085 # Fake the existence of programs that GNU maintainers use.  -*- Autoconf -*-
 1086 
 1087 # Copyright (C) 1997-2018 Free Software Foundation, Inc.
 1088 #
 1089 # This file is free software; the Free Software Foundation
 1090 # gives unlimited permission to copy and/or distribute it,
 1091 # with or without modifications, as long as this notice is preserved.
 1092 
 1093 # AM_MISSING_PROG(NAME, PROGRAM)
 1094 # ------------------------------
 1095 AC_DEFUN([AM_MISSING_PROG],
 1096 [AC_REQUIRE([AM_MISSING_HAS_RUN])
 1097 $1=${$1-"${am_missing_run}$2"}
 1098 AC_SUBST($1)])
 1099 
 1100 # AM_MISSING_HAS_RUN
 1101 # ------------------
 1102 # Define MISSING if not defined so far and test if it is modern enough.
 1103 # If it is, set am_missing_run to use it, otherwise, to nothing.
 1104 AC_DEFUN([AM_MISSING_HAS_RUN],
 1105 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
 1106 AC_REQUIRE_AUX_FILE([missing])dnl
 1107 if test x"${MISSING+set}" != xset; then
 1108   case $am_aux_dir in
 1109   *\ * | *\	*)
 1110     MISSING="\${SHELL} \"$am_aux_dir/missing\"" ;;
 1111   *)
 1112     MISSING="\${SHELL} $am_aux_dir/missing" ;;
 1113   esac
 1114 fi
 1115 # Use eval to expand $SHELL
 1116 if eval "$MISSING --is-lightweight"; then
 1117   am_missing_run="$MISSING "
 1118 else
 1119   am_missing_run=
 1120   AC_MSG_WARN(['missing' script is too old or missing])
 1121 fi
 1122 ])
 1123 
 1124 # Helper functions for option handling.                     -*- Autoconf -*-
 1125 
 1126 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
 1127 #
 1128 # This file is free software; the Free Software Foundation
 1129 # gives unlimited permission to copy and/or distribute it,
 1130 # with or without modifications, as long as this notice is preserved.
 1131 
 1132 # _AM_MANGLE_OPTION(NAME)
 1133 # -----------------------
 1134 AC_DEFUN([_AM_MANGLE_OPTION],
 1135 [[_AM_OPTION_]m4_bpatsubst($1, [[^a-zA-Z0-9_]], [_])])
 1136 
 1137 # _AM_SET_OPTION(NAME)
 1138 # --------------------
 1139 # Set option NAME.  Presently that only means defining a flag for this option.
 1140 AC_DEFUN([_AM_SET_OPTION],
 1141 [m4_define(_AM_MANGLE_OPTION([$1]), [1])])
 1142 
 1143 # _AM_SET_OPTIONS(OPTIONS)
 1144 # ------------------------
 1145 # OPTIONS is a space-separated list of Automake options.
 1146 AC_DEFUN([_AM_SET_OPTIONS],
 1147 [m4_foreach_w([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])])
 1148 
 1149 # _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET])
 1150 # -------------------------------------------
 1151 # Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
 1152 AC_DEFUN([_AM_IF_OPTION],
 1153 [m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])
 1154 
 1155 # Copyright (C) 1999-2018 Free Software Foundation, Inc.
 1156 #
 1157 # This file is free software; the Free Software Foundation
 1158 # gives unlimited permission to copy and/or distribute it,
 1159 # with or without modifications, as long as this notice is preserved.
 1160 
 1161 # _AM_PROG_CC_C_O
 1162 # ---------------
 1163 # Like AC_PROG_CC_C_O, but changed for automake.  We rewrite AC_PROG_CC
 1164 # to automatically call this.
 1165 AC_DEFUN([_AM_PROG_CC_C_O],
 1166 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
 1167 AC_REQUIRE_AUX_FILE([compile])dnl
 1168 AC_LANG_PUSH([C])dnl
 1169 AC_CACHE_CHECK(
 1170   [whether $CC understands -c and -o together],
 1171   [am_cv_prog_cc_c_o],
 1172   [AC_LANG_CONFTEST([AC_LANG_PROGRAM([])])
 1173   # Make sure it works both with $CC and with simple cc.
 1174   # Following AC_PROG_CC_C_O, we do the test twice because some
 1175   # compilers refuse to overwrite an existing .o file with -o,
 1176   # though they will create one.
 1177   am_cv_prog_cc_c_o=yes
 1178   for am_i in 1 2; do
 1179     if AM_RUN_LOG([$CC -c conftest.$ac_ext -o conftest2.$ac_objext]) \
 1180          && test -f conftest2.$ac_objext; then
 1181       : OK
 1182     else
 1183       am_cv_prog_cc_c_o=no
 1184       break
 1185     fi
 1186   done
 1187   rm -f core conftest*
 1188   unset am_i])
 1189 if test "$am_cv_prog_cc_c_o" != yes; then
 1190    # Losing compiler, so override with the script.
 1191    # FIXME: It is wrong to rewrite CC.
 1192    # But if we don't then we get into trouble of one sort or another.
 1193    # A longer-term fix would be to have automake use am__CC in this case,
 1194    # and then we could set am__CC="\$(top_srcdir)/compile \$(CC)"
 1195    CC="$am_aux_dir/compile $CC"
 1196 fi
 1197 AC_LANG_POP([C])])
 1198 
 1199 # For backward compatibility.
 1200 AC_DEFUN_ONCE([AM_PROG_CC_C_O], [AC_REQUIRE([AC_PROG_CC])])
 1201 
 1202 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
 1203 #
 1204 # This file is free software; the Free Software Foundation
 1205 # gives unlimited permission to copy and/or distribute it,
 1206 # with or without modifications, as long as this notice is preserved.
 1207 
 1208 # AM_RUN_LOG(COMMAND)
 1209 # -------------------
 1210 # Run COMMAND, save the exit status in ac_status, and log it.
 1211 # (This has been adapted from Autoconf's _AC_RUN_LOG macro.)
 1212 AC_DEFUN([AM_RUN_LOG],
 1213 [{ echo "$as_me:$LINENO: $1" >&AS_MESSAGE_LOG_FD
 1214    ($1) >&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD
 1215    ac_status=$?
 1216    echo "$as_me:$LINENO: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
 1217    (exit $ac_status); }])
 1218 
 1219 # Check to make sure that the build environment is sane.    -*- Autoconf -*-
 1220 
 1221 # Copyright (C) 1996-2018 Free Software Foundation, Inc.
 1222 #
 1223 # This file is free software; the Free Software Foundation
 1224 # gives unlimited permission to copy and/or distribute it,
 1225 # with or without modifications, as long as this notice is preserved.
 1226 
 1227 # AM_SANITY_CHECK
 1228 # ---------------
 1229 AC_DEFUN([AM_SANITY_CHECK],
 1230 [AC_MSG_CHECKING([whether build environment is sane])
 1231 # Reject unsafe characters in $srcdir or the absolute working directory
 1232 # name.  Accept space and tab only in the latter.
 1233 am_lf='
 1234 '
 1235 case `pwd` in
 1236   *[[\\\"\#\$\&\'\`$am_lf]]*)
 1237     AC_MSG_ERROR([unsafe absolute working directory name]);;
 1238 esac
 1239 case $srcdir in
 1240   *[[\\\"\#\$\&\'\`$am_lf\ \	]]*)
 1241     AC_MSG_ERROR([unsafe srcdir value: '$srcdir']);;
 1242 esac
 1243 
 1244 # Do 'set' in a subshell so we don't clobber the current shell's
 1245 # arguments.  Must try -L first in case configure is actually a
 1246 # symlink; some systems play weird games with the mod time of symlinks
 1247 # (eg FreeBSD returns the mod time of the symlink's containing
 1248 # directory).
 1249 if (
 1250    am_has_slept=no
 1251    for am_try in 1 2; do
 1252      echo "timestamp, slept: $am_has_slept" > conftest.file
 1253      set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
 1254      if test "$[*]" = "X"; then
 1255 	# -L didn't work.
 1256 	set X `ls -t "$srcdir/configure" conftest.file`
 1257      fi
 1258      if test "$[*]" != "X $srcdir/configure conftest.file" \
 1259 	&& test "$[*]" != "X conftest.file $srcdir/configure"; then
 1260 
 1261 	# If neither matched, then we have a broken ls.  This can happen
 1262 	# if, for instance, CONFIG_SHELL is bash and it inherits a
 1263 	# broken ls alias from the environment.  This has actually
 1264 	# happened.  Such a system could not be considered "sane".
 1265 	AC_MSG_ERROR([ls -t appears to fail.  Make sure there is not a broken
 1266   alias in your environment])
 1267      fi
 1268      if test "$[2]" = conftest.file || test $am_try -eq 2; then
 1269        break
 1270      fi
 1271      # Just in case.
 1272      sleep 1
 1273      am_has_slept=yes
 1274    done
 1275    test "$[2]" = conftest.file
 1276    )
 1277 then
 1278    # Ok.
 1279    :
 1280 else
 1281    AC_MSG_ERROR([newly created file is older than distributed files!
 1282 Check your system clock])
 1283 fi
 1284 AC_MSG_RESULT([yes])
 1285 # If we didn't sleep, we still need to ensure time stamps of config.status and
 1286 # generated files are strictly newer.
 1287 am_sleep_pid=
 1288 if grep 'slept: no' conftest.file >/dev/null 2>&1; then
 1289   ( sleep 1 ) &
 1290   am_sleep_pid=$!
 1291 fi
 1292 AC_CONFIG_COMMANDS_PRE(
 1293   [AC_MSG_CHECKING([that generated files are newer than configure])
 1294    if test -n "$am_sleep_pid"; then
 1295      # Hide warnings about reused PIDs.
 1296      wait $am_sleep_pid 2>/dev/null
 1297    fi
 1298    AC_MSG_RESULT([done])])
 1299 rm -f conftest.file
 1300 ])
 1301 
 1302 # Copyright (C) 2009-2018 Free Software Foundation, Inc.
 1303 #
 1304 # This file is free software; the Free Software Foundation
 1305 # gives unlimited permission to copy and/or distribute it,
 1306 # with or without modifications, as long as this notice is preserved.
 1307 
 1308 # AM_SILENT_RULES([DEFAULT])
 1309 # --------------------------
 1310 # Enable less verbose build rules; with the default set to DEFAULT
 1311 # ("yes" being less verbose, "no" or empty being verbose).
 1312 AC_DEFUN([AM_SILENT_RULES],
 1313 [AC_ARG_ENABLE([silent-rules], [dnl
 1314 AS_HELP_STRING(
 1315   [--enable-silent-rules],
 1316   [less verbose build output (undo: "make V=1")])
 1317 AS_HELP_STRING(
 1318   [--disable-silent-rules],
 1319   [verbose build output (undo: "make V=0")])dnl
 1320 ])
 1321 case $enable_silent_rules in @%:@ (((
 1322   yes) AM_DEFAULT_VERBOSITY=0;;
 1323    no) AM_DEFAULT_VERBOSITY=1;;
 1324     *) AM_DEFAULT_VERBOSITY=m4_if([$1], [yes], [0], [1]);;
 1325 esac
 1326 dnl
 1327 dnl A few 'make' implementations (e.g., NonStop OS and NextStep)
 1328 dnl do not support nested variable expansions.
 1329 dnl See automake bug#9928 and bug#10237.
 1330 am_make=${MAKE-make}
 1331 AC_CACHE_CHECK([whether $am_make supports nested variables],
 1332    [am_cv_make_support_nested_variables],
 1333    [if AS_ECHO([['TRUE=$(BAR$(V))
 1334 BAR0=false
 1335 BAR1=true
 1336 V=1
 1337 am__doit:
 1338 	@$(TRUE)
 1339 .PHONY: am__doit']]) | $am_make -f - >/dev/null 2>&1; then
 1340   am_cv_make_support_nested_variables=yes
 1341 else
 1342   am_cv_make_support_nested_variables=no
 1343 fi])
 1344 if test $am_cv_make_support_nested_variables = yes; then
 1345   dnl Using '$V' instead of '$(V)' breaks IRIX make.
 1346   AM_V='$(V)'
 1347   AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
 1348 else
 1349   AM_V=$AM_DEFAULT_VERBOSITY
 1350   AM_DEFAULT_V=$AM_DEFAULT_VERBOSITY
 1351 fi
 1352 AC_SUBST([AM_V])dnl
 1353 AM_SUBST_NOTMAKE([AM_V])dnl
 1354 AC_SUBST([AM_DEFAULT_V])dnl
 1355 AM_SUBST_NOTMAKE([AM_DEFAULT_V])dnl
 1356 AC_SUBST([AM_DEFAULT_VERBOSITY])dnl
 1357 AM_BACKSLASH='\'
 1358 AC_SUBST([AM_BACKSLASH])dnl
 1359 _AM_SUBST_NOTMAKE([AM_BACKSLASH])dnl
 1360 ])
 1361 
 1362 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
 1363 #
 1364 # This file is free software; the Free Software Foundation
 1365 # gives unlimited permission to copy and/or distribute it,
 1366 # with or without modifications, as long as this notice is preserved.
 1367 
 1368 # AM_PROG_INSTALL_STRIP
 1369 # ---------------------
 1370 # One issue with vendor 'install' (even GNU) is that you can't
 1371 # specify the program used to strip binaries.  This is especially
 1372 # annoying in cross-compiling environments, where the build's strip
 1373 # is unlikely to handle the host's binaries.
 1374 # Fortunately install-sh will honor a STRIPPROG variable, so we
 1375 # always use install-sh in "make install-strip", and initialize
 1376 # STRIPPROG with the value of the STRIP variable (set by the user).
 1377 AC_DEFUN([AM_PROG_INSTALL_STRIP],
 1378 [AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
 1379 # Installed binaries are usually stripped using 'strip' when the user
 1380 # run "make install-strip".  However 'strip' might not be the right
 1381 # tool to use in cross-compilation environments, therefore Automake
 1382 # will honor the 'STRIP' environment variable to overrule this program.
 1383 dnl Don't test for $cross_compiling = yes, because it might be 'maybe'.
 1384 if test "$cross_compiling" != no; then
 1385   AC_CHECK_TOOL([STRIP], [strip], :)
 1386 fi
 1387 INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
 1388 AC_SUBST([INSTALL_STRIP_PROGRAM])])
 1389 
 1390 # Copyright (C) 2006-2018 Free Software Foundation, Inc.
 1391 #
 1392 # This file is free software; the Free Software Foundation
 1393 # gives unlimited permission to copy and/or distribute it,
 1394 # with or without modifications, as long as this notice is preserved.
 1395 
 1396 # _AM_SUBST_NOTMAKE(VARIABLE)
 1397 # ---------------------------
 1398 # Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in.
 1399 # This macro is traced by Automake.
 1400 AC_DEFUN([_AM_SUBST_NOTMAKE])
 1401 
 1402 # AM_SUBST_NOTMAKE(VARIABLE)
 1403 # --------------------------
 1404 # Public sister of _AM_SUBST_NOTMAKE.
 1405 AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
 1406 
 1407 # Check how to create a tarball.                            -*- Autoconf -*-
 1408 
 1409 # Copyright (C) 2004-2018 Free Software Foundation, Inc.
 1410 #
 1411 # This file is free software; the Free Software Foundation
 1412 # gives unlimited permission to copy and/or distribute it,
 1413 # with or without modifications, as long as this notice is preserved.
 1414 
 1415 # _AM_PROG_TAR(FORMAT)
 1416 # --------------------
 1417 # Check how to create a tarball in format FORMAT.
 1418 # FORMAT should be one of 'v7', 'ustar', or 'pax'.
 1419 #
 1420 # Substitute a variable $(am__tar) that is a command
 1421 # writing to stdout a FORMAT-tarball containing the directory
 1422 # $tardir.
 1423 #     tardir=directory && $(am__tar) > result.tar
 1424 #
 1425 # Substitute a variable $(am__untar) that extract such
 1426 # a tarball read from stdin.
 1427 #     $(am__untar) < result.tar
 1428 #
 1429 AC_DEFUN([_AM_PROG_TAR],
 1430 [# Always define AMTAR for backward compatibility.  Yes, it's still used
 1431 # in the wild :-(  We should find a proper way to deprecate it ...
 1432 AC_SUBST([AMTAR], ['$${TAR-tar}'])
 1433 
 1434 # We'll loop over all known methods to create a tar archive until one works.
 1435 _am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
 1436 
 1437 m4_if([$1], [v7],
 1438   [am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'],
 1439 
 1440   [m4_case([$1],
 1441     [ustar],
 1442      [# The POSIX 1988 'ustar' format is defined with fixed-size fields.
 1443       # There is notably a 21 bits limit for the UID and the GID.  In fact,
 1444       # the 'pax' utility can hang on bigger UID/GID (see automake bug#8343
 1445       # and bug#13588).
 1446       am_max_uid=2097151 # 2^21 - 1
 1447       am_max_gid=$am_max_uid
 1448       # The $UID and $GID variables are not portable, so we need to resort
 1449       # to the POSIX-mandated id(1) utility.  Errors in the 'id' calls
 1450       # below are definitely unexpected, so allow the users to see them
 1451       # (that is, avoid stderr redirection).
 1452       am_uid=`id -u || echo unknown`
 1453       am_gid=`id -g || echo unknown`
 1454       AC_MSG_CHECKING([whether UID '$am_uid' is supported by ustar format])
 1455       if test $am_uid -le $am_max_uid; then
 1456          AC_MSG_RESULT([yes])
 1457       else
 1458          AC_MSG_RESULT([no])
 1459          _am_tools=none
 1460       fi
 1461       AC_MSG_CHECKING([whether GID '$am_gid' is supported by ustar format])
 1462       if test $am_gid -le $am_max_gid; then
 1463          AC_MSG_RESULT([yes])
 1464       else
 1465         AC_MSG_RESULT([no])
 1466         _am_tools=none
 1467       fi],
 1468 
 1469   [pax],
 1470     [],
 1471 
 1472   [m4_fatal([Unknown tar format])])
 1473 
 1474   AC_MSG_CHECKING([how to create a $1 tar archive])
 1475 
 1476   # Go ahead even if we have the value already cached.  We do so because we
 1477   # need to set the values for the 'am__tar' and 'am__untar' variables.
 1478   _am_tools=${am_cv_prog_tar_$1-$_am_tools}
 1479 
 1480   for _am_tool in $_am_tools; do
 1481     case $_am_tool in
 1482     gnutar)
 1483       for _am_tar in tar gnutar gtar; do
 1484         AM_RUN_LOG([$_am_tar --version]) && break
 1485       done
 1486       am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"'
 1487       am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"'
 1488       am__untar="$_am_tar -xf -"
 1489       ;;
 1490     plaintar)
 1491       # Must skip GNU tar: if it does not support --format= it doesn't create
 1492       # ustar tarball either.
 1493       (tar --version) >/dev/null 2>&1 && continue
 1494       am__tar='tar chf - "$$tardir"'
 1495       am__tar_='tar chf - "$tardir"'
 1496       am__untar='tar xf -'
 1497       ;;
 1498     pax)
 1499       am__tar='pax -L -x $1 -w "$$tardir"'
 1500       am__tar_='pax -L -x $1 -w "$tardir"'
 1501       am__untar='pax -r'
 1502       ;;
 1503     cpio)
 1504       am__tar='find "$$tardir" -print | cpio -o -H $1 -L'
 1505       am__tar_='find "$tardir" -print | cpio -o -H $1 -L'
 1506       am__untar='cpio -i -H $1 -d'
 1507       ;;
 1508     none)
 1509       am__tar=false
 1510       am__tar_=false
 1511       am__untar=false
 1512       ;;
 1513     esac
 1514 
 1515     # If the value was cached, stop now.  We just wanted to have am__tar
 1516     # and am__untar set.
 1517     test -n "${am_cv_prog_tar_$1}" && break
 1518 
 1519     # tar/untar a dummy directory, and stop if the command works.
 1520     rm -rf conftest.dir
 1521     mkdir conftest.dir
 1522     echo GrepMe > conftest.dir/file
 1523     AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar])
 1524     rm -rf conftest.dir
 1525     if test -s conftest.tar; then
 1526       AM_RUN_LOG([$am__untar <conftest.tar])
 1527       AM_RUN_LOG([cat conftest.dir/file])
 1528       grep GrepMe conftest.dir/file >/dev/null 2>&1 && break
 1529     fi
 1530   done
 1531   rm -rf conftest.dir
 1532 
 1533   AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])
 1534   AC_MSG_RESULT([$am_cv_prog_tar_$1])])
 1535 
 1536 AC_SUBST([am__tar])
 1537 AC_SUBST([am__untar])
 1538 ]) # _AM_PROG_TAR
 1539 
 1540 m4_include([m4/ax_pthread.m4])
 1541 m4_include([m4/libtool.m4])
 1542 m4_include([m4/ltoptions.m4])
 1543 m4_include([m4/ltsugar.m4])
 1544 m4_include([m4/ltversion.m4])
 1545 m4_include([m4/lt~obsolete.m4])
 1546 m4_include([m4/pcre_visibility.m4])