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    1 # generated automatically by aclocal 1.16.3 -*- Autoconf -*-
    2 
    3 # Copyright (C) 1996-2020 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) 2002-2020 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], [1.16.3], [],
  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([1.16.3])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) 2011-2020 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) 2001-2020 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_COND_IF                                            -*- Autoconf -*-
  516 
  517 # Copyright (C) 2008-2020 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_COND_IF
  524 # _AM_COND_ELSE
  525 # _AM_COND_ENDIF
  526 # --------------
  527 # These macros are only used for tracing.
  528 m4_define([_AM_COND_IF])
  529 m4_define([_AM_COND_ELSE])
  530 m4_define([_AM_COND_ENDIF])
  531 
  532 # AM_COND_IF(COND, [IF-TRUE], [IF-FALSE])
  533 # ---------------------------------------
  534 # If the shell condition COND is true, execute IF-TRUE, otherwise execute
  535 # IF-FALSE.  Allow automake to learn about conditional instantiating macros
  536 # (the AC_CONFIG_FOOS).
  537 AC_DEFUN([AM_COND_IF],
  538 [m4_ifndef([_AM_COND_VALUE_$1],
  539 	   [m4_fatal([$0: no such condition "$1"])])dnl
  540 _AM_COND_IF([$1])dnl
  541 if test -z "$$1_TRUE"; then :
  542   m4_n([$2])[]dnl
  543 m4_ifval([$3],
  544 [_AM_COND_ELSE([$1])dnl
  545 else
  546   $3
  547 ])dnl
  548 _AM_COND_ENDIF([$1])dnl
  549 fi[]dnl
  550 ])
  551 
  552 # AM_CONDITIONAL                                            -*- Autoconf -*-
  553 
  554 # Copyright (C) 1997-2020 Free Software Foundation, Inc.
  555 #
  556 # This file is free software; the Free Software Foundation
  557 # gives unlimited permission to copy and/or distribute it,
  558 # with or without modifications, as long as this notice is preserved.
  559 
  560 # AM_CONDITIONAL(NAME, SHELL-CONDITION)
  561 # -------------------------------------
  562 # Define a conditional.
  563 AC_DEFUN([AM_CONDITIONAL],
  564 [AC_PREREQ([2.52])dnl
  565  m4_if([$1], [TRUE],  [AC_FATAL([$0: invalid condition: $1])],
  566        [$1], [FALSE], [AC_FATAL([$0: invalid condition: $1])])dnl
  567 AC_SUBST([$1_TRUE])dnl
  568 AC_SUBST([$1_FALSE])dnl
  569 _AM_SUBST_NOTMAKE([$1_TRUE])dnl
  570 _AM_SUBST_NOTMAKE([$1_FALSE])dnl
  571 m4_define([_AM_COND_VALUE_$1], [$2])dnl
  572 if $2; then
  573   $1_TRUE=
  574   $1_FALSE='#'
  575 else
  576   $1_TRUE='#'
  577   $1_FALSE=
  578 fi
  579 AC_CONFIG_COMMANDS_PRE(
  580 [if test -z "${$1_TRUE}" && test -z "${$1_FALSE}"; then
  581   AC_MSG_ERROR([[conditional "$1" was never defined.
  582 Usually this means the macro was only invoked conditionally.]])
  583 fi])])
  584 
  585 # Copyright (C) 1999-2020 Free Software Foundation, Inc.
  586 #
  587 # This file is free software; the Free Software Foundation
  588 # gives unlimited permission to copy and/or distribute it,
  589 # with or without modifications, as long as this notice is preserved.
  590 
  591 
  592 # There are a few dirty hacks below to avoid letting 'AC_PROG_CC' be
  593 # written in clear, in which case automake, when reading aclocal.m4,
  594 # will think it sees a *use*, and therefore will trigger all it's
  595 # C support machinery.  Also note that it means that autoscan, seeing
  596 # CC etc. in the Makefile, will ask for an AC_PROG_CC use...
  597 
  598 
  599 # _AM_DEPENDENCIES(NAME)
  600 # ----------------------
  601 # See how the compiler implements dependency checking.
  602 # NAME is "CC", "CXX", "OBJC", "OBJCXX", "UPC", or "GJC".
  603 # We try a few techniques and use that to set a single cache variable.
  604 #
  605 # We don't AC_REQUIRE the corresponding AC_PROG_CC since the latter was
  606 # modified to invoke _AM_DEPENDENCIES(CC); we would have a circular
  607 # dependency, and given that the user is not expected to run this macro,
  608 # just rely on AC_PROG_CC.
  609 AC_DEFUN([_AM_DEPENDENCIES],
  610 [AC_REQUIRE([AM_SET_DEPDIR])dnl
  611 AC_REQUIRE([AM_OUTPUT_DEPENDENCY_COMMANDS])dnl
  612 AC_REQUIRE([AM_MAKE_INCLUDE])dnl
  613 AC_REQUIRE([AM_DEP_TRACK])dnl
  614 
  615 m4_if([$1], [CC],   [depcc="$CC"   am_compiler_list=],
  616       [$1], [CXX],  [depcc="$CXX"  am_compiler_list=],
  617       [$1], [OBJC], [depcc="$OBJC" am_compiler_list='gcc3 gcc'],
  618       [$1], [OBJCXX], [depcc="$OBJCXX" am_compiler_list='gcc3 gcc'],
  619       [$1], [UPC],  [depcc="$UPC"  am_compiler_list=],
  620       [$1], [GCJ],  [depcc="$GCJ"  am_compiler_list='gcc3 gcc'],
  621                     [depcc="$$1"   am_compiler_list=])
  622 
  623 AC_CACHE_CHECK([dependency style of $depcc],
  624                [am_cv_$1_dependencies_compiler_type],
  625 [if test -z "$AMDEP_TRUE" && test -f "$am_depcomp"; then
  626   # We make a subdir and do the tests there.  Otherwise we can end up
  627   # making bogus files that we don't know about and never remove.  For
  628   # instance it was reported that on HP-UX the gcc test will end up
  629   # making a dummy file named 'D' -- because '-MD' means "put the output
  630   # in D".
  631   rm -rf conftest.dir
  632   mkdir conftest.dir
  633   # Copy depcomp to subdir because otherwise we won't find it if we're
  634   # using a relative directory.
  635   cp "$am_depcomp" conftest.dir
  636   cd conftest.dir
  637   # We will build objects and dependencies in a subdirectory because
  638   # it helps to detect inapplicable dependency modes.  For instance
  639   # both Tru64's cc and ICC support -MD to output dependencies as a
  640   # side effect of compilation, but ICC will put the dependencies in
  641   # the current directory while Tru64 will put them in the object
  642   # directory.
  643   mkdir sub
  644 
  645   am_cv_$1_dependencies_compiler_type=none
  646   if test "$am_compiler_list" = ""; then
  647      am_compiler_list=`sed -n ['s/^#*\([a-zA-Z0-9]*\))$/\1/p'] < ./depcomp`
  648   fi
  649   am__universal=false
  650   m4_case([$1], [CC],
  651     [case " $depcc " in #(
  652      *\ -arch\ *\ -arch\ *) am__universal=true ;;
  653      esac],
  654     [CXX],
  655     [case " $depcc " in #(
  656      *\ -arch\ *\ -arch\ *) am__universal=true ;;
  657      esac])
  658 
  659   for depmode in $am_compiler_list; do
  660     # Setup a source with many dependencies, because some compilers
  661     # like to wrap large dependency lists on column 80 (with \), and
  662     # we should not choose a depcomp mode which is confused by this.
  663     #
  664     # We need to recreate these files for each test, as the compiler may
  665     # overwrite some of them when testing with obscure command lines.
  666     # This happens at least with the AIX C compiler.
  667     : > sub/conftest.c
  668     for i in 1 2 3 4 5 6; do
  669       echo '#include "conftst'$i'.h"' >> sub/conftest.c
  670       # Using ": > sub/conftst$i.h" creates only sub/conftst1.h with
  671       # Solaris 10 /bin/sh.
  672       echo '/* dummy */' > sub/conftst$i.h
  673     done
  674     echo "${am__include} ${am__quote}sub/conftest.Po${am__quote}" > confmf
  675 
  676     # We check with '-c' and '-o' for the sake of the "dashmstdout"
  677     # mode.  It turns out that the SunPro C++ compiler does not properly
  678     # handle '-M -o', and we need to detect this.  Also, some Intel
  679     # versions had trouble with output in subdirs.
  680     am__obj=sub/conftest.${OBJEXT-o}
  681     am__minus_obj="-o $am__obj"
  682     case $depmode in
  683     gcc)
  684       # This depmode causes a compiler race in universal mode.
  685       test "$am__universal" = false || continue
  686       ;;
  687     nosideeffect)
  688       # After this tag, mechanisms are not by side-effect, so they'll
  689       # only be used when explicitly requested.
  690       if test "x$enable_dependency_tracking" = xyes; then
  691 	continue
  692       else
  693 	break
  694       fi
  695       ;;
  696     msvc7 | msvc7msys | msvisualcpp | msvcmsys)
  697       # This compiler won't grok '-c -o', but also, the minuso test has
  698       # not run yet.  These depmodes are late enough in the game, and
  699       # so weak that their functioning should not be impacted.
  700       am__obj=conftest.${OBJEXT-o}
  701       am__minus_obj=
  702       ;;
  703     none) break ;;
  704     esac
  705     if depmode=$depmode \
  706        source=sub/conftest.c object=$am__obj \
  707        depfile=sub/conftest.Po tmpdepfile=sub/conftest.TPo \
  708        $SHELL ./depcomp $depcc -c $am__minus_obj sub/conftest.c \
  709          >/dev/null 2>conftest.err &&
  710        grep sub/conftst1.h sub/conftest.Po > /dev/null 2>&1 &&
  711        grep sub/conftst6.h sub/conftest.Po > /dev/null 2>&1 &&
  712        grep $am__obj sub/conftest.Po > /dev/null 2>&1 &&
  713        ${MAKE-make} -s -f confmf > /dev/null 2>&1; then
  714       # icc doesn't choke on unknown options, it will just issue warnings
  715       # or remarks (even with -Werror).  So we grep stderr for any message
  716       # that says an option was ignored or not supported.
  717       # When given -MP, icc 7.0 and 7.1 complain thusly:
  718       #   icc: Command line warning: ignoring option '-M'; no argument required
  719       # The diagnosis changed in icc 8.0:
  720       #   icc: Command line remark: option '-MP' not supported
  721       if (grep 'ignoring option' conftest.err ||
  722           grep 'not supported' conftest.err) >/dev/null 2>&1; then :; else
  723         am_cv_$1_dependencies_compiler_type=$depmode
  724         break
  725       fi
  726     fi
  727   done
  728 
  729   cd ..
  730   rm -rf conftest.dir
  731 else
  732   am_cv_$1_dependencies_compiler_type=none
  733 fi
  734 ])
  735 AC_SUBST([$1DEPMODE], [depmode=$am_cv_$1_dependencies_compiler_type])
  736 AM_CONDITIONAL([am__fastdep$1], [
  737   test "x$enable_dependency_tracking" != xno \
  738   && test "$am_cv_$1_dependencies_compiler_type" = gcc3])
  739 ])
  740 
  741 
  742 # AM_SET_DEPDIR
  743 # -------------
  744 # Choose a directory name for dependency files.
  745 # This macro is AC_REQUIREd in _AM_DEPENDENCIES.
  746 AC_DEFUN([AM_SET_DEPDIR],
  747 [AC_REQUIRE([AM_SET_LEADING_DOT])dnl
  748 AC_SUBST([DEPDIR], ["${am__leading_dot}deps"])dnl
  749 ])
  750 
  751 
  752 # AM_DEP_TRACK
  753 # ------------
  754 AC_DEFUN([AM_DEP_TRACK],
  755 [AC_ARG_ENABLE([dependency-tracking], [dnl
  756 AS_HELP_STRING(
  757   [--enable-dependency-tracking],
  758   [do not reject slow dependency extractors])
  759 AS_HELP_STRING(
  760   [--disable-dependency-tracking],
  761   [speeds up one-time build])])
  762 if test "x$enable_dependency_tracking" != xno; then
  763   am_depcomp="$ac_aux_dir/depcomp"
  764   AMDEPBACKSLASH='\'
  765   am__nodep='_no'
  766 fi
  767 AM_CONDITIONAL([AMDEP], [test "x$enable_dependency_tracking" != xno])
  768 AC_SUBST([AMDEPBACKSLASH])dnl
  769 _AM_SUBST_NOTMAKE([AMDEPBACKSLASH])dnl
  770 AC_SUBST([am__nodep])dnl
  771 _AM_SUBST_NOTMAKE([am__nodep])dnl
  772 ])
  773 
  774 # Generate code to set up dependency tracking.              -*- Autoconf -*-
  775 
  776 # Copyright (C) 1999-2020 Free Software Foundation, Inc.
  777 #
  778 # This file is free software; the Free Software Foundation
  779 # gives unlimited permission to copy and/or distribute it,
  780 # with or without modifications, as long as this notice is preserved.
  781 
  782 # _AM_OUTPUT_DEPENDENCY_COMMANDS
  783 # ------------------------------
  784 AC_DEFUN([_AM_OUTPUT_DEPENDENCY_COMMANDS],
  785 [{
  786   # Older Autoconf quotes --file arguments for eval, but not when files
  787   # are listed without --file.  Let's play safe and only enable the eval
  788   # if we detect the quoting.
  789   # TODO: see whether this extra hack can be removed once we start
  790   # requiring Autoconf 2.70 or later.
  791   AS_CASE([$CONFIG_FILES],
  792           [*\'*], [eval set x "$CONFIG_FILES"],
  793           [*], [set x $CONFIG_FILES])
  794   shift
  795   # Used to flag and report bootstrapping failures.
  796   am_rc=0
  797   for am_mf
  798   do
  799     # Strip MF so we end up with the name of the file.
  800     am_mf=`AS_ECHO(["$am_mf"]) | sed -e 's/:.*$//'`
  801     # Check whether this is an Automake generated Makefile which includes
  802     # dependency-tracking related rules and includes.
  803     # Grep'ing the whole file directly is not great: AIX grep has a line
  804     # limit of 2048, but all sed's we know have understand at least 4000.
  805     sed -n 's,^am--depfiles:.*,X,p' "$am_mf" | grep X >/dev/null 2>&1 \
  806       || continue
  807     am_dirpart=`AS_DIRNAME(["$am_mf"])`
  808     am_filepart=`AS_BASENAME(["$am_mf"])`
  809     AM_RUN_LOG([cd "$am_dirpart" \
  810       && sed -e '/# am--include-marker/d' "$am_filepart" \
  811         | $MAKE -f - am--depfiles]) || am_rc=$?
  812   done
  813   if test $am_rc -ne 0; then
  814     AC_MSG_FAILURE([Something went wrong bootstrapping makefile fragments
  815     for automatic dependency tracking.  If GNU make was not used, consider
  816     re-running the configure script with MAKE="gmake" (or whatever is
  817     necessary).  You can also try re-running configure with the
  818     '--disable-dependency-tracking' option to at least be able to build
  819     the package (albeit without support for automatic dependency tracking).])
  820   fi
  821   AS_UNSET([am_dirpart])
  822   AS_UNSET([am_filepart])
  823   AS_UNSET([am_mf])
  824   AS_UNSET([am_rc])
  825   rm -f conftest-deps.mk
  826 }
  827 ])# _AM_OUTPUT_DEPENDENCY_COMMANDS
  828 
  829 
  830 # AM_OUTPUT_DEPENDENCY_COMMANDS
  831 # -----------------------------
  832 # This macro should only be invoked once -- use via AC_REQUIRE.
  833 #
  834 # This code is only required when automatic dependency tracking is enabled.
  835 # This creates each '.Po' and '.Plo' makefile fragment that we'll need in
  836 # order to bootstrap the dependency handling code.
  837 AC_DEFUN([AM_OUTPUT_DEPENDENCY_COMMANDS],
  838 [AC_CONFIG_COMMANDS([depfiles],
  839      [test x"$AMDEP_TRUE" != x"" || _AM_OUTPUT_DEPENDENCY_COMMANDS],
  840      [AMDEP_TRUE="$AMDEP_TRUE" MAKE="${MAKE-make}"])])
  841 
  842 # Do all the work for Automake.                             -*- Autoconf -*-
  843 
  844 # Copyright (C) 1996-2020 Free Software Foundation, Inc.
  845 #
  846 # This file is free software; the Free Software Foundation
  847 # gives unlimited permission to copy and/or distribute it,
  848 # with or without modifications, as long as this notice is preserved.
  849 
  850 # This macro actually does too much.  Some checks are only needed if
  851 # your package does certain things.  But this isn't really a big deal.
  852 
  853 dnl Redefine AC_PROG_CC to automatically invoke _AM_PROG_CC_C_O.
  854 m4_define([AC_PROG_CC],
  855 m4_defn([AC_PROG_CC])
  856 [_AM_PROG_CC_C_O
  857 ])
  858 
  859 # AM_INIT_AUTOMAKE(PACKAGE, VERSION, [NO-DEFINE])
  860 # AM_INIT_AUTOMAKE([OPTIONS])
  861 # -----------------------------------------------
  862 # The call with PACKAGE and VERSION arguments is the old style
  863 # call (pre autoconf-2.50), which is being phased out.  PACKAGE
  864 # and VERSION should now be passed to AC_INIT and removed from
  865 # the call to AM_INIT_AUTOMAKE.
  866 # We support both call styles for the transition.  After
  867 # the next Automake release, Autoconf can make the AC_INIT
  868 # arguments mandatory, and then we can depend on a new Autoconf
  869 # release and drop the old call support.
  870 AC_DEFUN([AM_INIT_AUTOMAKE],
  871 [AC_PREREQ([2.65])dnl
  872 dnl Autoconf wants to disallow AM_ names.  We explicitly allow
  873 dnl the ones we care about.
  874 m4_pattern_allow([^AM_[A-Z]+FLAGS$])dnl
  875 AC_REQUIRE([AM_SET_CURRENT_AUTOMAKE_VERSION])dnl
  876 AC_REQUIRE([AC_PROG_INSTALL])dnl
  877 if test "`cd $srcdir && pwd`" != "`pwd`"; then
  878   # Use -I$(srcdir) only when $(srcdir) != ., so that make's output
  879   # is not polluted with repeated "-I."
  880   AC_SUBST([am__isrc], [' -I$(srcdir)'])_AM_SUBST_NOTMAKE([am__isrc])dnl
  881   # test to see if srcdir already configured
  882   if test -f $srcdir/config.status; then
  883     AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
  884   fi
  885 fi
  886 
  887 # test whether we have cygpath
  888 if test -z "$CYGPATH_W"; then
  889   if (cygpath --version) >/dev/null 2>/dev/null; then
  890     CYGPATH_W='cygpath -w'
  891   else
  892     CYGPATH_W=echo
  893   fi
  894 fi
  895 AC_SUBST([CYGPATH_W])
  896 
  897 # Define the identity of the package.
  898 dnl Distinguish between old-style and new-style calls.
  899 m4_ifval([$2],
  900 [AC_DIAGNOSE([obsolete],
  901              [$0: two- and three-arguments forms are deprecated.])
  902 m4_ifval([$3], [_AM_SET_OPTION([no-define])])dnl
  903  AC_SUBST([PACKAGE], [$1])dnl
  904  AC_SUBST([VERSION], [$2])],
  905 [_AM_SET_OPTIONS([$1])dnl
  906 dnl Diagnose old-style AC_INIT with new-style AM_AUTOMAKE_INIT.
  907 m4_if(
  908   m4_ifset([AC_PACKAGE_NAME], [ok]):m4_ifset([AC_PACKAGE_VERSION], [ok]),
  909   [ok:ok],,
  910   [m4_fatal([AC_INIT should be called with package and version arguments])])dnl
  911  AC_SUBST([PACKAGE], ['AC_PACKAGE_TARNAME'])dnl
  912  AC_SUBST([VERSION], ['AC_PACKAGE_VERSION'])])dnl
  913 
  914 _AM_IF_OPTION([no-define],,
  915 [AC_DEFINE_UNQUOTED([PACKAGE], ["$PACKAGE"], [Name of package])
  916  AC_DEFINE_UNQUOTED([VERSION], ["$VERSION"], [Version number of package])])dnl
  917 
  918 # Some tools Automake needs.
  919 AC_REQUIRE([AM_SANITY_CHECK])dnl
  920 AC_REQUIRE([AC_ARG_PROGRAM])dnl
  921 AM_MISSING_PROG([ACLOCAL], [aclocal-${am__api_version}])
  922 AM_MISSING_PROG([AUTOCONF], [autoconf])
  923 AM_MISSING_PROG([AUTOMAKE], [automake-${am__api_version}])
  924 AM_MISSING_PROG([AUTOHEADER], [autoheader])
  925 AM_MISSING_PROG([MAKEINFO], [makeinfo])
  926 AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
  927 AC_REQUIRE([AM_PROG_INSTALL_STRIP])dnl
  928 AC_REQUIRE([AC_PROG_MKDIR_P])dnl
  929 # For better backward compatibility.  To be removed once Automake 1.9.x
  930 # dies out for good.  For more background, see:
  931 # <https://lists.gnu.org/archive/html/automake/2012-07/msg00001.html>
  932 # <https://lists.gnu.org/archive/html/automake/2012-07/msg00014.html>
  933 AC_SUBST([mkdir_p], ['$(MKDIR_P)'])
  934 # We need awk for the "check" target (and possibly the TAP driver).  The
  935 # system "awk" is bad on some platforms.
  936 AC_REQUIRE([AC_PROG_AWK])dnl
  937 AC_REQUIRE([AC_PROG_MAKE_SET])dnl
  938 AC_REQUIRE([AM_SET_LEADING_DOT])dnl
  939 _AM_IF_OPTION([tar-ustar], [_AM_PROG_TAR([ustar])],
  940 	      [_AM_IF_OPTION([tar-pax], [_AM_PROG_TAR([pax])],
  941 			     [_AM_PROG_TAR([v7])])])
  942 _AM_IF_OPTION([no-dependencies],,
  943 [AC_PROVIDE_IFELSE([AC_PROG_CC],
  944 		  [_AM_DEPENDENCIES([CC])],
  945 		  [m4_define([AC_PROG_CC],
  946 			     m4_defn([AC_PROG_CC])[_AM_DEPENDENCIES([CC])])])dnl
  947 AC_PROVIDE_IFELSE([AC_PROG_CXX],
  948 		  [_AM_DEPENDENCIES([CXX])],
  949 		  [m4_define([AC_PROG_CXX],
  950 			     m4_defn([AC_PROG_CXX])[_AM_DEPENDENCIES([CXX])])])dnl
  951 AC_PROVIDE_IFELSE([AC_PROG_OBJC],
  952 		  [_AM_DEPENDENCIES([OBJC])],
  953 		  [m4_define([AC_PROG_OBJC],
  954 			     m4_defn([AC_PROG_OBJC])[_AM_DEPENDENCIES([OBJC])])])dnl
  955 AC_PROVIDE_IFELSE([AC_PROG_OBJCXX],
  956 		  [_AM_DEPENDENCIES([OBJCXX])],
  957 		  [m4_define([AC_PROG_OBJCXX],
  958 			     m4_defn([AC_PROG_OBJCXX])[_AM_DEPENDENCIES([OBJCXX])])])dnl
  959 ])
  960 AC_REQUIRE([AM_SILENT_RULES])dnl
  961 dnl The testsuite driver may need to know about EXEEXT, so add the
  962 dnl 'am__EXEEXT' conditional if _AM_COMPILER_EXEEXT was seen.  This
  963 dnl macro is hooked onto _AC_COMPILER_EXEEXT early, see below.
  964 AC_CONFIG_COMMANDS_PRE(dnl
  965 [m4_provide_if([_AM_COMPILER_EXEEXT],
  966   [AM_CONDITIONAL([am__EXEEXT], [test -n "$EXEEXT"])])])dnl
  967 
  968 # POSIX will say in a future version that running "rm -f" with no argument
  969 # is OK; and we want to be able to make that assumption in our Makefile
  970 # recipes.  So use an aggressive probe to check that the usage we want is
  971 # actually supported "in the wild" to an acceptable degree.
  972 # See automake bug#10828.
  973 # To make any issue more visible, cause the running configure to be aborted
  974 # by default if the 'rm' program in use doesn't match our expectations; the
  975 # user can still override this though.
  976 if rm -f && rm -fr && rm -rf; then : OK; else
  977   cat >&2 <<'END'
  978 Oops!
  979 
  980 Your 'rm' program seems unable to run without file operands specified
  981 on the command line, even when the '-f' option is present.  This is contrary
  982 to the behaviour of most rm programs out there, and not conforming with
  983 the upcoming POSIX standard: <http://austingroupbugs.net/view.php?id=542>
  984 
  985 Please tell bug-automake@gnu.org about your system, including the value
  986 of your $PATH and any error possibly output before this message.  This
  987 can help us improve future automake versions.
  988 
  989 END
  990   if test x"$ACCEPT_INFERIOR_RM_PROGRAM" = x"yes"; then
  991     echo 'Configuration will proceed anyway, since you have set the' >&2
  992     echo 'ACCEPT_INFERIOR_RM_PROGRAM variable to "yes"' >&2
  993     echo >&2
  994   else
  995     cat >&2 <<'END'
  996 Aborting the configuration process, to ensure you take notice of the issue.
  997 
  998 You can download and install GNU coreutils to get an 'rm' implementation
  999 that behaves properly: <https://www.gnu.org/software/coreutils/>.
 1000 
 1001 If you want to complete the configuration process using your problematic
 1002 'rm' anyway, export the environment variable ACCEPT_INFERIOR_RM_PROGRAM
 1003 to "yes", and re-run configure.
 1004 
 1005 END
 1006     AC_MSG_ERROR([Your 'rm' program is bad, sorry.])
 1007   fi
 1008 fi
 1009 dnl The trailing newline in this macro's definition is deliberate, for
 1010 dnl backward compatibility and to allow trailing 'dnl'-style comments
 1011 dnl after the AM_INIT_AUTOMAKE invocation. See automake bug#16841.
 1012 ])
 1013 
 1014 dnl Hook into '_AC_COMPILER_EXEEXT' early to learn its expansion.  Do not
 1015 dnl add the conditional right here, as _AC_COMPILER_EXEEXT may be further
 1016 dnl mangled by Autoconf and run in a shell conditional statement.
 1017 m4_define([_AC_COMPILER_EXEEXT],
 1018 m4_defn([_AC_COMPILER_EXEEXT])[m4_provide([_AM_COMPILER_EXEEXT])])
 1019 
 1020 # When config.status generates a header, we must update the stamp-h file.
 1021 # This file resides in the same directory as the config header
 1022 # that is generated.  The stamp files are numbered to have different names.
 1023 
 1024 # Autoconf calls _AC_AM_CONFIG_HEADER_HOOK (when defined) in the
 1025 # loop where config.status creates the headers, so we can generate
 1026 # our stamp files there.
 1027 AC_DEFUN([_AC_AM_CONFIG_HEADER_HOOK],
 1028 [# Compute $1's index in $config_headers.
 1029 _am_arg=$1
 1030 _am_stamp_count=1
 1031 for _am_header in $config_headers :; do
 1032   case $_am_header in
 1033     $_am_arg | $_am_arg:* )
 1034       break ;;
 1035     * )
 1036       _am_stamp_count=`expr $_am_stamp_count + 1` ;;
 1037   esac
 1038 done
 1039 echo "timestamp for $_am_arg" >`AS_DIRNAME(["$_am_arg"])`/stamp-h[]$_am_stamp_count])
 1040 
 1041 # Copyright (C) 2001-2020 Free Software Foundation, Inc.
 1042 #
 1043 # This file is free software; the Free Software Foundation
 1044 # gives unlimited permission to copy and/or distribute it,
 1045 # with or without modifications, as long as this notice is preserved.
 1046 
 1047 # AM_PROG_INSTALL_SH
 1048 # ------------------
 1049 # Define $install_sh.
 1050 AC_DEFUN([AM_PROG_INSTALL_SH],
 1051 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
 1052 if test x"${install_sh+set}" != xset; then
 1053   case $am_aux_dir in
 1054   *\ * | *\	*)
 1055     install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
 1056   *)
 1057     install_sh="\${SHELL} $am_aux_dir/install-sh"
 1058   esac
 1059 fi
 1060 AC_SUBST([install_sh])])
 1061 
 1062 # Copyright (C) 2003-2020 Free Software Foundation, Inc.
 1063 #
 1064 # This file is free software; the Free Software Foundation
 1065 # gives unlimited permission to copy and/or distribute it,
 1066 # with or without modifications, as long as this notice is preserved.
 1067 
 1068 # Check whether the underlying file-system supports filenames
 1069 # with a leading dot.  For instance MS-DOS doesn't.
 1070 AC_DEFUN([AM_SET_LEADING_DOT],
 1071 [rm -rf .tst 2>/dev/null
 1072 mkdir .tst 2>/dev/null
 1073 if test -d .tst; then
 1074   am__leading_dot=.
 1075 else
 1076   am__leading_dot=_
 1077 fi
 1078 rmdir .tst 2>/dev/null
 1079 AC_SUBST([am__leading_dot])])
 1080 
 1081 # Check to see how 'make' treats includes.	            -*- Autoconf -*-
 1082 
 1083 # Copyright (C) 2001-2020 Free Software Foundation, Inc.
 1084 #
 1085 # This file is free software; the Free Software Foundation
 1086 # gives unlimited permission to copy and/or distribute it,
 1087 # with or without modifications, as long as this notice is preserved.
 1088 
 1089 # AM_MAKE_INCLUDE()
 1090 # -----------------
 1091 # Check whether make has an 'include' directive that can support all
 1092 # the idioms we need for our automatic dependency tracking code.
 1093 AC_DEFUN([AM_MAKE_INCLUDE],
 1094 [AC_MSG_CHECKING([whether ${MAKE-make} supports the include directive])
 1095 cat > confinc.mk << 'END'
 1096 am__doit:
 1097 	@echo this is the am__doit target >confinc.out
 1098 .PHONY: am__doit
 1099 END
 1100 am__include="#"
 1101 am__quote=
 1102 # BSD make does it like this.
 1103 echo '.include "confinc.mk" # ignored' > confmf.BSD
 1104 # Other make implementations (GNU, Solaris 10, AIX) do it like this.
 1105 echo 'include confinc.mk # ignored' > confmf.GNU
 1106 _am_result=no
 1107 for s in GNU BSD; do
 1108   AM_RUN_LOG([${MAKE-make} -f confmf.$s && cat confinc.out])
 1109   AS_CASE([$?:`cat confinc.out 2>/dev/null`],
 1110       ['0:this is the am__doit target'],
 1111       [AS_CASE([$s],
 1112           [BSD], [am__include='.include' am__quote='"'],
 1113           [am__include='include' am__quote=''])])
 1114   if test "$am__include" != "#"; then
 1115     _am_result="yes ($s style)"
 1116     break
 1117   fi
 1118 done
 1119 rm -f confinc.* confmf.*
 1120 AC_MSG_RESULT([${_am_result}])
 1121 AC_SUBST([am__include])])
 1122 AC_SUBST([am__quote])])
 1123 
 1124 # Fake the existence of programs that GNU maintainers use.  -*- Autoconf -*-
 1125 
 1126 # Copyright (C) 1997-2020 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_MISSING_PROG(NAME, PROGRAM)
 1133 # ------------------------------
 1134 AC_DEFUN([AM_MISSING_PROG],
 1135 [AC_REQUIRE([AM_MISSING_HAS_RUN])
 1136 $1=${$1-"${am_missing_run}$2"}
 1137 AC_SUBST($1)])
 1138 
 1139 # AM_MISSING_HAS_RUN
 1140 # ------------------
 1141 # Define MISSING if not defined so far and test if it is modern enough.
 1142 # If it is, set am_missing_run to use it, otherwise, to nothing.
 1143 AC_DEFUN([AM_MISSING_HAS_RUN],
 1144 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
 1145 AC_REQUIRE_AUX_FILE([missing])dnl
 1146 if test x"${MISSING+set}" != xset; then
 1147   MISSING="\${SHELL} '$am_aux_dir/missing'"
 1148 fi
 1149 # Use eval to expand $SHELL
 1150 if eval "$MISSING --is-lightweight"; then
 1151   am_missing_run="$MISSING "
 1152 else
 1153   am_missing_run=
 1154   AC_MSG_WARN(['missing' script is too old or missing])
 1155 fi
 1156 ])
 1157 
 1158 # Helper functions for option handling.                     -*- Autoconf -*-
 1159 
 1160 # Copyright (C) 2001-2020 Free Software Foundation, Inc.
 1161 #
 1162 # This file is free software; the Free Software Foundation
 1163 # gives unlimited permission to copy and/or distribute it,
 1164 # with or without modifications, as long as this notice is preserved.
 1165 
 1166 # _AM_MANGLE_OPTION(NAME)
 1167 # -----------------------
 1168 AC_DEFUN([_AM_MANGLE_OPTION],
 1169 [[_AM_OPTION_]m4_bpatsubst($1, [[^a-zA-Z0-9_]], [_])])
 1170 
 1171 # _AM_SET_OPTION(NAME)
 1172 # --------------------
 1173 # Set option NAME.  Presently that only means defining a flag for this option.
 1174 AC_DEFUN([_AM_SET_OPTION],
 1175 [m4_define(_AM_MANGLE_OPTION([$1]), [1])])
 1176 
 1177 # _AM_SET_OPTIONS(OPTIONS)
 1178 # ------------------------
 1179 # OPTIONS is a space-separated list of Automake options.
 1180 AC_DEFUN([_AM_SET_OPTIONS],
 1181 [m4_foreach_w([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])])
 1182 
 1183 # _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET])
 1184 # -------------------------------------------
 1185 # Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
 1186 AC_DEFUN([_AM_IF_OPTION],
 1187 [m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])
 1188 
 1189 # Copyright (C) 1999-2020 Free Software Foundation, Inc.
 1190 #
 1191 # This file is free software; the Free Software Foundation
 1192 # gives unlimited permission to copy and/or distribute it,
 1193 # with or without modifications, as long as this notice is preserved.
 1194 
 1195 # _AM_PROG_CC_C_O
 1196 # ---------------
 1197 # Like AC_PROG_CC_C_O, but changed for automake.  We rewrite AC_PROG_CC
 1198 # to automatically call this.
 1199 AC_DEFUN([_AM_PROG_CC_C_O],
 1200 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
 1201 AC_REQUIRE_AUX_FILE([compile])dnl
 1202 AC_LANG_PUSH([C])dnl
 1203 AC_CACHE_CHECK(
 1204   [whether $CC understands -c and -o together],
 1205   [am_cv_prog_cc_c_o],
 1206   [AC_LANG_CONFTEST([AC_LANG_PROGRAM([])])
 1207   # Make sure it works both with $CC and with simple cc.
 1208   # Following AC_PROG_CC_C_O, we do the test twice because some
 1209   # compilers refuse to overwrite an existing .o file with -o,
 1210   # though they will create one.
 1211   am_cv_prog_cc_c_o=yes
 1212   for am_i in 1 2; do
 1213     if AM_RUN_LOG([$CC -c conftest.$ac_ext -o conftest2.$ac_objext]) \
 1214          && test -f conftest2.$ac_objext; then
 1215       : OK
 1216     else
 1217       am_cv_prog_cc_c_o=no
 1218       break
 1219     fi
 1220   done
 1221   rm -f core conftest*
 1222   unset am_i])
 1223 if test "$am_cv_prog_cc_c_o" != yes; then
 1224    # Losing compiler, so override with the script.
 1225    # FIXME: It is wrong to rewrite CC.
 1226    # But if we don't then we get into trouble of one sort or another.
 1227    # A longer-term fix would be to have automake use am__CC in this case,
 1228    # and then we could set am__CC="\$(top_srcdir)/compile \$(CC)"
 1229    CC="$am_aux_dir/compile $CC"
 1230 fi
 1231 AC_LANG_POP([C])])
 1232 
 1233 # For backward compatibility.
 1234 AC_DEFUN_ONCE([AM_PROG_CC_C_O], [AC_REQUIRE([AC_PROG_CC])])
 1235 
 1236 # Copyright (C) 2001-2020 Free Software Foundation, Inc.
 1237 #
 1238 # This file is free software; the Free Software Foundation
 1239 # gives unlimited permission to copy and/or distribute it,
 1240 # with or without modifications, as long as this notice is preserved.
 1241 
 1242 # AM_RUN_LOG(COMMAND)
 1243 # -------------------
 1244 # Run COMMAND, save the exit status in ac_status, and log it.
 1245 # (This has been adapted from Autoconf's _AC_RUN_LOG macro.)
 1246 AC_DEFUN([AM_RUN_LOG],
 1247 [{ echo "$as_me:$LINENO: $1" >&AS_MESSAGE_LOG_FD
 1248    ($1) >&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD
 1249    ac_status=$?
 1250    echo "$as_me:$LINENO: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
 1251    (exit $ac_status); }])
 1252 
 1253 # Check to make sure that the build environment is sane.    -*- Autoconf -*-
 1254 
 1255 # Copyright (C) 1996-2020 Free Software Foundation, Inc.
 1256 #
 1257 # This file is free software; the Free Software Foundation
 1258 # gives unlimited permission to copy and/or distribute it,
 1259 # with or without modifications, as long as this notice is preserved.
 1260 
 1261 # AM_SANITY_CHECK
 1262 # ---------------
 1263 AC_DEFUN([AM_SANITY_CHECK],
 1264 [AC_MSG_CHECKING([whether build environment is sane])
 1265 # Reject unsafe characters in $srcdir or the absolute working directory
 1266 # name.  Accept space and tab only in the latter.
 1267 am_lf='
 1268 '
 1269 case `pwd` in
 1270   *[[\\\"\#\$\&\'\`$am_lf]]*)
 1271     AC_MSG_ERROR([unsafe absolute working directory name]);;
 1272 esac
 1273 case $srcdir in
 1274   *[[\\\"\#\$\&\'\`$am_lf\ \	]]*)
 1275     AC_MSG_ERROR([unsafe srcdir value: '$srcdir']);;
 1276 esac
 1277 
 1278 # Do 'set' in a subshell so we don't clobber the current shell's
 1279 # arguments.  Must try -L first in case configure is actually a
 1280 # symlink; some systems play weird games with the mod time of symlinks
 1281 # (eg FreeBSD returns the mod time of the symlink's containing
 1282 # directory).
 1283 if (
 1284    am_has_slept=no
 1285    for am_try in 1 2; do
 1286      echo "timestamp, slept: $am_has_slept" > conftest.file
 1287      set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
 1288      if test "$[*]" = "X"; then
 1289 	# -L didn't work.
 1290 	set X `ls -t "$srcdir/configure" conftest.file`
 1291      fi
 1292      if test "$[*]" != "X $srcdir/configure conftest.file" \
 1293 	&& test "$[*]" != "X conftest.file $srcdir/configure"; then
 1294 
 1295 	# If neither matched, then we have a broken ls.  This can happen
 1296 	# if, for instance, CONFIG_SHELL is bash and it inherits a
 1297 	# broken ls alias from the environment.  This has actually
 1298 	# happened.  Such a system could not be considered "sane".
 1299 	AC_MSG_ERROR([ls -t appears to fail.  Make sure there is not a broken
 1300   alias in your environment])
 1301      fi
 1302      if test "$[2]" = conftest.file || test $am_try -eq 2; then
 1303        break
 1304      fi
 1305      # Just in case.
 1306      sleep 1
 1307      am_has_slept=yes
 1308    done
 1309    test "$[2]" = conftest.file
 1310    )
 1311 then
 1312    # Ok.
 1313    :
 1314 else
 1315    AC_MSG_ERROR([newly created file is older than distributed files!
 1316 Check your system clock])
 1317 fi
 1318 AC_MSG_RESULT([yes])
 1319 # If we didn't sleep, we still need to ensure time stamps of config.status and
 1320 # generated files are strictly newer.
 1321 am_sleep_pid=
 1322 if grep 'slept: no' conftest.file >/dev/null 2>&1; then
 1323   ( sleep 1 ) &
 1324   am_sleep_pid=$!
 1325 fi
 1326 AC_CONFIG_COMMANDS_PRE(
 1327   [AC_MSG_CHECKING([that generated files are newer than configure])
 1328    if test -n "$am_sleep_pid"; then
 1329      # Hide warnings about reused PIDs.
 1330      wait $am_sleep_pid 2>/dev/null
 1331    fi
 1332    AC_MSG_RESULT([done])])
 1333 rm -f conftest.file
 1334 ])
 1335 
 1336 # Copyright (C) 2009-2020 Free Software Foundation, Inc.
 1337 #
 1338 # This file is free software; the Free Software Foundation
 1339 # gives unlimited permission to copy and/or distribute it,
 1340 # with or without modifications, as long as this notice is preserved.
 1341 
 1342 # AM_SILENT_RULES([DEFAULT])
 1343 # --------------------------
 1344 # Enable less verbose build rules; with the default set to DEFAULT
 1345 # ("yes" being less verbose, "no" or empty being verbose).
 1346 AC_DEFUN([AM_SILENT_RULES],
 1347 [AC_ARG_ENABLE([silent-rules], [dnl
 1348 AS_HELP_STRING(
 1349   [--enable-silent-rules],
 1350   [less verbose build output (undo: "make V=1")])
 1351 AS_HELP_STRING(
 1352   [--disable-silent-rules],
 1353   [verbose build output (undo: "make V=0")])dnl
 1354 ])
 1355 case $enable_silent_rules in @%:@ (((
 1356   yes) AM_DEFAULT_VERBOSITY=0;;
 1357    no) AM_DEFAULT_VERBOSITY=1;;
 1358     *) AM_DEFAULT_VERBOSITY=m4_if([$1], [yes], [0], [1]);;
 1359 esac
 1360 dnl
 1361 dnl A few 'make' implementations (e.g., NonStop OS and NextStep)
 1362 dnl do not support nested variable expansions.
 1363 dnl See automake bug#9928 and bug#10237.
 1364 am_make=${MAKE-make}
 1365 AC_CACHE_CHECK([whether $am_make supports nested variables],
 1366    [am_cv_make_support_nested_variables],
 1367    [if AS_ECHO([['TRUE=$(BAR$(V))
 1368 BAR0=false
 1369 BAR1=true
 1370 V=1
 1371 am__doit:
 1372 	@$(TRUE)
 1373 .PHONY: am__doit']]) | $am_make -f - >/dev/null 2>&1; then
 1374   am_cv_make_support_nested_variables=yes
 1375 else
 1376   am_cv_make_support_nested_variables=no
 1377 fi])
 1378 if test $am_cv_make_support_nested_variables = yes; then
 1379   dnl Using '$V' instead of '$(V)' breaks IRIX make.
 1380   AM_V='$(V)'
 1381   AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
 1382 else
 1383   AM_V=$AM_DEFAULT_VERBOSITY
 1384   AM_DEFAULT_V=$AM_DEFAULT_VERBOSITY
 1385 fi
 1386 AC_SUBST([AM_V])dnl
 1387 AM_SUBST_NOTMAKE([AM_V])dnl
 1388 AC_SUBST([AM_DEFAULT_V])dnl
 1389 AM_SUBST_NOTMAKE([AM_DEFAULT_V])dnl
 1390 AC_SUBST([AM_DEFAULT_VERBOSITY])dnl
 1391 AM_BACKSLASH='\'
 1392 AC_SUBST([AM_BACKSLASH])dnl
 1393 _AM_SUBST_NOTMAKE([AM_BACKSLASH])dnl
 1394 ])
 1395 
 1396 # Copyright (C) 2001-2020 Free Software Foundation, Inc.
 1397 #
 1398 # This file is free software; the Free Software Foundation
 1399 # gives unlimited permission to copy and/or distribute it,
 1400 # with or without modifications, as long as this notice is preserved.
 1401 
 1402 # AM_PROG_INSTALL_STRIP
 1403 # ---------------------
 1404 # One issue with vendor 'install' (even GNU) is that you can't
 1405 # specify the program used to strip binaries.  This is especially
 1406 # annoying in cross-compiling environments, where the build's strip
 1407 # is unlikely to handle the host's binaries.
 1408 # Fortunately install-sh will honor a STRIPPROG variable, so we
 1409 # always use install-sh in "make install-strip", and initialize
 1410 # STRIPPROG with the value of the STRIP variable (set by the user).
 1411 AC_DEFUN([AM_PROG_INSTALL_STRIP],
 1412 [AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
 1413 # Installed binaries are usually stripped using 'strip' when the user
 1414 # run "make install-strip".  However 'strip' might not be the right
 1415 # tool to use in cross-compilation environments, therefore Automake
 1416 # will honor the 'STRIP' environment variable to overrule this program.
 1417 dnl Don't test for $cross_compiling = yes, because it might be 'maybe'.
 1418 if test "$cross_compiling" != no; then
 1419   AC_CHECK_TOOL([STRIP], [strip], :)
 1420 fi
 1421 INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
 1422 AC_SUBST([INSTALL_STRIP_PROGRAM])])
 1423 
 1424 # Copyright (C) 2006-2020 Free Software Foundation, Inc.
 1425 #
 1426 # This file is free software; the Free Software Foundation
 1427 # gives unlimited permission to copy and/or distribute it,
 1428 # with or without modifications, as long as this notice is preserved.
 1429 
 1430 # _AM_SUBST_NOTMAKE(VARIABLE)
 1431 # ---------------------------
 1432 # Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in.
 1433 # This macro is traced by Automake.
 1434 AC_DEFUN([_AM_SUBST_NOTMAKE])
 1435 
 1436 # AM_SUBST_NOTMAKE(VARIABLE)
 1437 # --------------------------
 1438 # Public sister of _AM_SUBST_NOTMAKE.
 1439 AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
 1440 
 1441 # Check how to create a tarball.                            -*- Autoconf -*-
 1442 
 1443 # Copyright (C) 2004-2020 Free Software Foundation, Inc.
 1444 #
 1445 # This file is free software; the Free Software Foundation
 1446 # gives unlimited permission to copy and/or distribute it,
 1447 # with or without modifications, as long as this notice is preserved.
 1448 
 1449 # _AM_PROG_TAR(FORMAT)
 1450 # --------------------
 1451 # Check how to create a tarball in format FORMAT.
 1452 # FORMAT should be one of 'v7', 'ustar', or 'pax'.
 1453 #
 1454 # Substitute a variable $(am__tar) that is a command
 1455 # writing to stdout a FORMAT-tarball containing the directory
 1456 # $tardir.
 1457 #     tardir=directory && $(am__tar) > result.tar
 1458 #
 1459 # Substitute a variable $(am__untar) that extract such
 1460 # a tarball read from stdin.
 1461 #     $(am__untar) < result.tar
 1462 #
 1463 AC_DEFUN([_AM_PROG_TAR],
 1464 [# Always define AMTAR for backward compatibility.  Yes, it's still used
 1465 # in the wild :-(  We should find a proper way to deprecate it ...
 1466 AC_SUBST([AMTAR], ['$${TAR-tar}'])
 1467 
 1468 # We'll loop over all known methods to create a tar archive until one works.
 1469 _am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
 1470 
 1471 m4_if([$1], [v7],
 1472   [am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'],
 1473 
 1474   [m4_case([$1],
 1475     [ustar],
 1476      [# The POSIX 1988 'ustar' format is defined with fixed-size fields.
 1477       # There is notably a 21 bits limit for the UID and the GID.  In fact,
 1478       # the 'pax' utility can hang on bigger UID/GID (see automake bug#8343
 1479       # and bug#13588).
 1480       am_max_uid=2097151 # 2^21 - 1
 1481       am_max_gid=$am_max_uid
 1482       # The $UID and $GID variables are not portable, so we need to resort
 1483       # to the POSIX-mandated id(1) utility.  Errors in the 'id' calls
 1484       # below are definitely unexpected, so allow the users to see them
 1485       # (that is, avoid stderr redirection).
 1486       am_uid=`id -u || echo unknown`
 1487       am_gid=`id -g || echo unknown`
 1488       AC_MSG_CHECKING([whether UID '$am_uid' is supported by ustar format])
 1489       if test $am_uid -le $am_max_uid; then
 1490          AC_MSG_RESULT([yes])
 1491       else
 1492          AC_MSG_RESULT([no])
 1493          _am_tools=none
 1494       fi
 1495       AC_MSG_CHECKING([whether GID '$am_gid' is supported by ustar format])
 1496       if test $am_gid -le $am_max_gid; then
 1497          AC_MSG_RESULT([yes])
 1498       else
 1499         AC_MSG_RESULT([no])
 1500         _am_tools=none
 1501       fi],
 1502 
 1503   [pax],
 1504     [],
 1505 
 1506   [m4_fatal([Unknown tar format])])
 1507 
 1508   AC_MSG_CHECKING([how to create a $1 tar archive])
 1509 
 1510   # Go ahead even if we have the value already cached.  We do so because we
 1511   # need to set the values for the 'am__tar' and 'am__untar' variables.
 1512   _am_tools=${am_cv_prog_tar_$1-$_am_tools}
 1513 
 1514   for _am_tool in $_am_tools; do
 1515     case $_am_tool in
 1516     gnutar)
 1517       for _am_tar in tar gnutar gtar; do
 1518         AM_RUN_LOG([$_am_tar --version]) && break
 1519       done
 1520       am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"'
 1521       am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"'
 1522       am__untar="$_am_tar -xf -"
 1523       ;;
 1524     plaintar)
 1525       # Must skip GNU tar: if it does not support --format= it doesn't create
 1526       # ustar tarball either.
 1527       (tar --version) >/dev/null 2>&1 && continue
 1528       am__tar='tar chf - "$$tardir"'
 1529       am__tar_='tar chf - "$tardir"'
 1530       am__untar='tar xf -'
 1531       ;;
 1532     pax)
 1533       am__tar='pax -L -x $1 -w "$$tardir"'
 1534       am__tar_='pax -L -x $1 -w "$tardir"'
 1535       am__untar='pax -r'
 1536       ;;
 1537     cpio)
 1538       am__tar='find "$$tardir" -print | cpio -o -H $1 -L'
 1539       am__tar_='find "$tardir" -print | cpio -o -H $1 -L'
 1540       am__untar='cpio -i -H $1 -d'
 1541       ;;
 1542     none)
 1543       am__tar=false
 1544       am__tar_=false
 1545       am__untar=false
 1546       ;;
 1547     esac
 1548 
 1549     # If the value was cached, stop now.  We just wanted to have am__tar
 1550     # and am__untar set.
 1551     test -n "${am_cv_prog_tar_$1}" && break
 1552 
 1553     # tar/untar a dummy directory, and stop if the command works.
 1554     rm -rf conftest.dir
 1555     mkdir conftest.dir
 1556     echo GrepMe > conftest.dir/file
 1557     AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar])
 1558     rm -rf conftest.dir
 1559     if test -s conftest.tar; then
 1560       AM_RUN_LOG([$am__untar <conftest.tar])
 1561       AM_RUN_LOG([cat conftest.dir/file])
 1562       grep GrepMe conftest.dir/file >/dev/null 2>&1 && break
 1563     fi
 1564   done
 1565   rm -rf conftest.dir
 1566 
 1567   AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])
 1568   AC_MSG_RESULT([$am_cv_prog_tar_$1])])
 1569 
 1570 AC_SUBST([am__tar])
 1571 AC_SUBST([am__untar])
 1572 ]) # _AM_PROG_TAR
 1573 
 1574 m4_include([gphoto-m4/gp-byteorder.m4])
 1575 m4_include([gphoto-m4/gp-camlibs.m4])
 1576 m4_include([gphoto-m4/gp-check-doxygen.m4])
 1577 m4_include([gphoto-m4/gp-check-library.m4])
 1578 m4_include([gphoto-m4/gp-check-shell-environment.m4])
 1579 m4_include([gphoto-m4/gp-config-msg.m4])
 1580 m4_include([gphoto-m4/gp-documentation.m4])
 1581 m4_include([gphoto-m4/gp-gettext-hack.m4])
 1582 m4_include([gphoto-m4/gp-internal-docs.m4])
 1583 m4_include([gphoto-m4/gp-libltdl.m4])
 1584 m4_include([gphoto-m4/gp-packaging.m4])
 1585 m4_include([gphoto-m4/gp-pedantic-compiler-flags.m4])
 1586 m4_include([gphoto-m4/gp-progs.m4])
 1587 m4_include([gphoto-m4/gp-references.m4])
 1588 m4_include([gphoto-m4/gp-set.m4])
 1589 m4_include([gphoto-m4/gp-sleep.m4])
 1590 m4_include([gphoto-m4/gp-stdint.m4])
 1591 m4_include([gphoto-m4/gp-udev.m4])
 1592 m4_include([gphoto-m4/gp-va-copy.m4])
 1593 m4_include([auto-m4/gettext.m4])
 1594 m4_include([auto-m4/iconv.m4])
 1595 m4_include([auto-m4/lib-ld.m4])
 1596 m4_include([auto-m4/lib-link.m4])
 1597 m4_include([auto-m4/lib-prefix.m4])
 1598 m4_include([auto-m4/libtool.m4])
 1599 m4_include([auto-m4/ltoptions.m4])
 1600 m4_include([auto-m4/ltsugar.m4])
 1601 m4_include([auto-m4/ltversion.m4])
 1602 m4_include([auto-m4/lt~obsolete.m4])
 1603 m4_include([auto-m4/nls.m4])
 1604 m4_include([auto-m4/po.m4])
 1605 m4_include([auto-m4/progtest.m4])