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    1 # generated automatically by aclocal 1.16.1 -*- Autoconf -*-
    2 
    3 # Copyright (C) 1996-2018 Free Software Foundation, Inc.
    4 
    5 # This file is free software; the Free Software Foundation
    6 # gives unlimited permission to copy and/or distribute it,
    7 # with or without modifications, as long as this notice is preserved.
    8 
    9 # This program is distributed in the hope that it will be useful,
   10 # but WITHOUT ANY WARRANTY, to the extent permitted by law; without
   11 # even the implied warranty of MERCHANTABILITY or FITNESS FOR A
   12 # PARTICULAR PURPOSE.
   13 
   14 m4_ifndef([AC_CONFIG_MACRO_DIRS], [m4_defun([_AM_CONFIG_MACRO_DIRS], [])m4_defun([AC_CONFIG_MACRO_DIRS], [_AM_CONFIG_MACRO_DIRS($@)])])
   15 m4_ifndef([AC_AUTOCONF_VERSION],
   16   [m4_copy([m4_PACKAGE_VERSION], [AC_AUTOCONF_VERSION])])dnl
   17 m4_if(m4_defn([AC_AUTOCONF_VERSION]), [2.69],,
   18 [m4_warning([this file was generated for autoconf 2.69.
   19 You have another version of autoconf.  It may work, but is not guaranteed to.
   20 If you have problems, you may need to regenerate the build system entirely.
   21 To do so, use the procedure documented by the package, typically 'autoreconf'.])])
   22 
   23 dnl pkg.m4 - Macros to locate and utilise pkg-config.   -*- Autoconf -*-
   24 dnl serial 11 (pkg-config-0.29.1)
   25 dnl
   26 dnl Copyright © 2004 Scott James Remnant <scott@netsplit.com>.
   27 dnl Copyright © 2012-2015 Dan Nicholson <dbn.lists@gmail.com>
   28 dnl
   29 dnl This program is free software; you can redistribute it and/or modify
   30 dnl it under the terms of the GNU General Public License as published by
   31 dnl the Free Software Foundation; either version 2 of the License, or
   32 dnl (at your option) any later version.
   33 dnl
   34 dnl This program is distributed in the hope that it will be useful, but
   35 dnl WITHOUT ANY WARRANTY; without even the implied warranty of
   36 dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
   37 dnl General Public License for more details.
   38 dnl
   39 dnl You should have received a copy of the GNU General Public License
   40 dnl along with this program; if not, write to the Free Software
   41 dnl Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
   42 dnl 02111-1307, USA.
   43 dnl
   44 dnl As a special exception to the GNU General Public License, if you
   45 dnl distribute this file as part of a program that contains a
   46 dnl configuration script generated by Autoconf, you may include it under
   47 dnl the same distribution terms that you use for the rest of that
   48 dnl program.
   49 
   50 dnl PKG_PREREQ(MIN-VERSION)
   51 dnl -----------------------
   52 dnl Since: 0.29
   53 dnl
   54 dnl Verify that the version of the pkg-config macros are at least
   55 dnl MIN-VERSION. Unlike PKG_PROG_PKG_CONFIG, which checks the user's
   56 dnl installed version of pkg-config, this checks the developer's version
   57 dnl of pkg.m4 when generating configure.
   58 dnl
   59 dnl To ensure that this macro is defined, also add:
   60 dnl m4_ifndef([PKG_PREREQ],
   61 dnl     [m4_fatal([must install pkg-config 0.29 or later before running autoconf/autogen])])
   62 dnl
   63 dnl See the "Since" comment for each macro you use to see what version
   64 dnl of the macros you require.
   65 m4_defun([PKG_PREREQ],
   66 [m4_define([PKG_MACROS_VERSION], [0.29.1])
   67 m4_if(m4_version_compare(PKG_MACROS_VERSION, [$1]), -1,
   68     [m4_fatal([pkg.m4 version $1 or higher is required but ]PKG_MACROS_VERSION[ found])])
   69 ])dnl PKG_PREREQ
   70 
   71 dnl PKG_PROG_PKG_CONFIG([MIN-VERSION])
   72 dnl ----------------------------------
   73 dnl Since: 0.16
   74 dnl
   75 dnl Search for the pkg-config tool and set the PKG_CONFIG variable to
   76 dnl first found in the path. Checks that the version of pkg-config found
   77 dnl is at least MIN-VERSION. If MIN-VERSION is not specified, 0.9.0 is
   78 dnl used since that's the first version where most current features of
   79 dnl pkg-config existed.
   80 AC_DEFUN([PKG_PROG_PKG_CONFIG],
   81 [m4_pattern_forbid([^_?PKG_[A-Z_]+$])
   82 m4_pattern_allow([^PKG_CONFIG(_(PATH|LIBDIR|SYSROOT_DIR|ALLOW_SYSTEM_(CFLAGS|LIBS)))?$])
   83 m4_pattern_allow([^PKG_CONFIG_(DISABLE_UNINSTALLED|TOP_BUILD_DIR|DEBUG_SPEW)$])
   84 AC_ARG_VAR([PKG_CONFIG], [path to pkg-config utility])
   85 AC_ARG_VAR([PKG_CONFIG_PATH], [directories to add to pkg-config's search path])
   86 AC_ARG_VAR([PKG_CONFIG_LIBDIR], [path overriding pkg-config's built-in search path])
   87 
   88 if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then
   89 	AC_PATH_TOOL([PKG_CONFIG], [pkg-config])
   90 fi
   91 if test -n "$PKG_CONFIG"; then
   92 	_pkg_min_version=m4_default([$1], [0.9.0])
   93 	AC_MSG_CHECKING([pkg-config is at least version $_pkg_min_version])
   94 	if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then
   95 		AC_MSG_RESULT([yes])
   96 	else
   97 		AC_MSG_RESULT([no])
   98 		PKG_CONFIG=""
   99 	fi
  100 fi[]dnl
  101 ])dnl PKG_PROG_PKG_CONFIG
  102 
  103 dnl PKG_CHECK_EXISTS(MODULES, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
  104 dnl -------------------------------------------------------------------
  105 dnl Since: 0.18
  106 dnl
  107 dnl Check to see whether a particular set of modules exists. Similar to
  108 dnl PKG_CHECK_MODULES(), but does not set variables or print errors.
  109 dnl
  110 dnl Please remember that m4 expands AC_REQUIRE([PKG_PROG_PKG_CONFIG])
  111 dnl only at the first occurence in configure.ac, so if the first place
  112 dnl it's called might be skipped (such as if it is within an "if", you
  113 dnl have to call PKG_CHECK_EXISTS manually
  114 AC_DEFUN([PKG_CHECK_EXISTS],
  115 [AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
  116 if test -n "$PKG_CONFIG" && \
  117     AC_RUN_LOG([$PKG_CONFIG --exists --print-errors "$1"]); then
  118   m4_default([$2], [:])
  119 m4_ifvaln([$3], [else
  120   $3])dnl
  121 fi])
  122 
  123 dnl _PKG_CONFIG([VARIABLE], [COMMAND], [MODULES])
  124 dnl ---------------------------------------------
  125 dnl Internal wrapper calling pkg-config via PKG_CONFIG and setting
  126 dnl pkg_failed based on the result.
  127 m4_define([_PKG_CONFIG],
  128 [if test -n "$$1"; then
  129     pkg_cv_[]$1="$$1"
  130  elif test -n "$PKG_CONFIG"; then
  131     PKG_CHECK_EXISTS([$3],
  132                      [pkg_cv_[]$1=`$PKG_CONFIG --[]$2 "$3" 2>/dev/null`
  133 		      test "x$?" != "x0" && pkg_failed=yes ],
  134 		     [pkg_failed=yes])
  135  else
  136     pkg_failed=untried
  137 fi[]dnl
  138 ])dnl _PKG_CONFIG
  139 
  140 dnl _PKG_SHORT_ERRORS_SUPPORTED
  141 dnl ---------------------------
  142 dnl Internal check to see if pkg-config supports short errors.
  143 AC_DEFUN([_PKG_SHORT_ERRORS_SUPPORTED],
  144 [AC_REQUIRE([PKG_PROG_PKG_CONFIG])
  145 if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
  146         _pkg_short_errors_supported=yes
  147 else
  148         _pkg_short_errors_supported=no
  149 fi[]dnl
  150 ])dnl _PKG_SHORT_ERRORS_SUPPORTED
  151 
  152 
  153 dnl PKG_CHECK_MODULES(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND],
  154 dnl   [ACTION-IF-NOT-FOUND])
  155 dnl --------------------------------------------------------------
  156 dnl Since: 0.4.0
  157 dnl
  158 dnl Note that if there is a possibility the first call to
  159 dnl PKG_CHECK_MODULES might not happen, you should be sure to include an
  160 dnl explicit call to PKG_PROG_PKG_CONFIG in your configure.ac
  161 AC_DEFUN([PKG_CHECK_MODULES],
  162 [AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
  163 AC_ARG_VAR([$1][_CFLAGS], [C compiler flags for $1, overriding pkg-config])dnl
  164 AC_ARG_VAR([$1][_LIBS], [linker flags for $1, overriding pkg-config])dnl
  165 
  166 pkg_failed=no
  167 AC_MSG_CHECKING([for $1])
  168 
  169 _PKG_CONFIG([$1][_CFLAGS], [cflags], [$2])
  170 _PKG_CONFIG([$1][_LIBS], [libs], [$2])
  171 
  172 m4_define([_PKG_TEXT], [Alternatively, you may set the environment variables $1[]_CFLAGS
  173 and $1[]_LIBS to avoid the need to call pkg-config.
  174 See the pkg-config man page for more details.])
  175 
  176 if test $pkg_failed = yes; then
  177    	AC_MSG_RESULT([no])
  178         _PKG_SHORT_ERRORS_SUPPORTED
  179         if test $_pkg_short_errors_supported = yes; then
  180 	        $1[]_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "$2" 2>&1`
  181         else 
  182 	        $1[]_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "$2" 2>&1`
  183         fi
  184 	# Put the nasty error message in config.log where it belongs
  185 	echo "$$1[]_PKG_ERRORS" >&AS_MESSAGE_LOG_FD
  186 
  187 	m4_default([$4], [AC_MSG_ERROR(
  188 [Package requirements ($2) were not met:
  189 
  190 $$1_PKG_ERRORS
  191 
  192 Consider adjusting the PKG_CONFIG_PATH environment variable if you
  193 installed software in a non-standard prefix.
  194 
  195 _PKG_TEXT])[]dnl
  196         ])
  197 elif test $pkg_failed = untried; then
  198      	AC_MSG_RESULT([no])
  199 	m4_default([$4], [AC_MSG_FAILURE(
  200 [The pkg-config script could not be found or is too old.  Make sure it
  201 is in your PATH or set the PKG_CONFIG environment variable to the full
  202 path to pkg-config.
  203 
  204 _PKG_TEXT
  205 
  206 To get pkg-config, see <http://pkg-config.freedesktop.org/>.])[]dnl
  207         ])
  208 else
  209 	$1[]_CFLAGS=$pkg_cv_[]$1[]_CFLAGS
  210 	$1[]_LIBS=$pkg_cv_[]$1[]_LIBS
  211         AC_MSG_RESULT([yes])
  212 	$3
  213 fi[]dnl
  214 ])dnl PKG_CHECK_MODULES
  215 
  216 
  217 dnl PKG_CHECK_MODULES_STATIC(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND],
  218 dnl   [ACTION-IF-NOT-FOUND])
  219 dnl ---------------------------------------------------------------------
  220 dnl Since: 0.29
  221 dnl
  222 dnl Checks for existence of MODULES and gathers its build flags with
  223 dnl static libraries enabled. Sets VARIABLE-PREFIX_CFLAGS from --cflags
  224 dnl and VARIABLE-PREFIX_LIBS from --libs.
  225 dnl
  226 dnl Note that if there is a possibility the first call to
  227 dnl PKG_CHECK_MODULES_STATIC might not happen, you should be sure to
  228 dnl include an explicit call to PKG_PROG_PKG_CONFIG in your
  229 dnl configure.ac.
  230 AC_DEFUN([PKG_CHECK_MODULES_STATIC],
  231 [AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
  232 _save_PKG_CONFIG=$PKG_CONFIG
  233 PKG_CONFIG="$PKG_CONFIG --static"
  234 PKG_CHECK_MODULES($@)
  235 PKG_CONFIG=$_save_PKG_CONFIG[]dnl
  236 ])dnl PKG_CHECK_MODULES_STATIC
  237 
  238 
  239 dnl PKG_INSTALLDIR([DIRECTORY])
  240 dnl -------------------------
  241 dnl Since: 0.27
  242 dnl
  243 dnl Substitutes the variable pkgconfigdir as the location where a module
  244 dnl should install pkg-config .pc files. By default the directory is
  245 dnl $libdir/pkgconfig, but the default can be changed by passing
  246 dnl DIRECTORY. The user can override through the --with-pkgconfigdir
  247 dnl parameter.
  248 AC_DEFUN([PKG_INSTALLDIR],
  249 [m4_pushdef([pkg_default], [m4_default([$1], ['${libdir}/pkgconfig'])])
  250 m4_pushdef([pkg_description],
  251     [pkg-config installation directory @<:@]pkg_default[@:>@])
  252 AC_ARG_WITH([pkgconfigdir],
  253     [AS_HELP_STRING([--with-pkgconfigdir], pkg_description)],,
  254     [with_pkgconfigdir=]pkg_default)
  255 AC_SUBST([pkgconfigdir], [$with_pkgconfigdir])
  256 m4_popdef([pkg_default])
  257 m4_popdef([pkg_description])
  258 ])dnl PKG_INSTALLDIR
  259 
  260 
  261 dnl PKG_NOARCH_INSTALLDIR([DIRECTORY])
  262 dnl --------------------------------
  263 dnl Since: 0.27
  264 dnl
  265 dnl Substitutes the variable noarch_pkgconfigdir as the location where a
  266 dnl module should install arch-independent pkg-config .pc files. By
  267 dnl default the directory is $datadir/pkgconfig, but the default can be
  268 dnl changed by passing DIRECTORY. The user can override through the
  269 dnl --with-noarch-pkgconfigdir parameter.
  270 AC_DEFUN([PKG_NOARCH_INSTALLDIR],
  271 [m4_pushdef([pkg_default], [m4_default([$1], ['${datadir}/pkgconfig'])])
  272 m4_pushdef([pkg_description],
  273     [pkg-config arch-independent installation directory @<:@]pkg_default[@:>@])
  274 AC_ARG_WITH([noarch-pkgconfigdir],
  275     [AS_HELP_STRING([--with-noarch-pkgconfigdir], pkg_description)],,
  276     [with_noarch_pkgconfigdir=]pkg_default)
  277 AC_SUBST([noarch_pkgconfigdir], [$with_noarch_pkgconfigdir])
  278 m4_popdef([pkg_default])
  279 m4_popdef([pkg_description])
  280 ])dnl PKG_NOARCH_INSTALLDIR
  281 
  282 
  283 dnl PKG_CHECK_VAR(VARIABLE, MODULE, CONFIG-VARIABLE,
  284 dnl [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
  285 dnl -------------------------------------------
  286 dnl Since: 0.28
  287 dnl
  288 dnl Retrieves the value of the pkg-config variable for the given module.
  289 AC_DEFUN([PKG_CHECK_VAR],
  290 [AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
  291 AC_ARG_VAR([$1], [value of $3 for $2, overriding pkg-config])dnl
  292 
  293 _PKG_CONFIG([$1], [variable="][$3]["], [$2])
  294 AS_VAR_COPY([$1], [pkg_cv_][$1])
  295 
  296 AS_VAR_IF([$1], [""], [$5], [$4])dnl
  297 ])dnl PKG_CHECK_VAR
  298 
  299 # Copyright (C) 2002-2018 Free Software Foundation, Inc.
  300 #
  301 # This file is free software; the Free Software Foundation
  302 # gives unlimited permission to copy and/or distribute it,
  303 # with or without modifications, as long as this notice is preserved.
  304 
  305 # AM_AUTOMAKE_VERSION(VERSION)
  306 # ----------------------------
  307 # Automake X.Y traces this macro to ensure aclocal.m4 has been
  308 # generated from the m4 files accompanying Automake X.Y.
  309 # (This private macro should not be called outside this file.)
  310 AC_DEFUN([AM_AUTOMAKE_VERSION],
  311 [am__api_version='1.16'
  312 dnl Some users find AM_AUTOMAKE_VERSION and mistake it for a way to
  313 dnl require some minimum version.  Point them to the right macro.
  314 m4_if([$1], [1.16.1], [],
  315       [AC_FATAL([Do not call $0, use AM_INIT_AUTOMAKE([$1]).])])dnl
  316 ])
  317 
  318 # _AM_AUTOCONF_VERSION(VERSION)
  319 # -----------------------------
  320 # aclocal traces this macro to find the Autoconf version.
  321 # This is a private macro too.  Using m4_define simplifies
  322 # the logic in aclocal, which can simply ignore this definition.
  323 m4_define([_AM_AUTOCONF_VERSION], [])
  324 
  325 # AM_SET_CURRENT_AUTOMAKE_VERSION
  326 # -------------------------------
  327 # Call AM_AUTOMAKE_VERSION and AM_AUTOMAKE_VERSION so they can be traced.
  328 # This function is AC_REQUIREd by AM_INIT_AUTOMAKE.
  329 AC_DEFUN([AM_SET_CURRENT_AUTOMAKE_VERSION],
  330 [AM_AUTOMAKE_VERSION([1.16.1])dnl
  331 m4_ifndef([AC_AUTOCONF_VERSION],
  332   [m4_copy([m4_PACKAGE_VERSION], [AC_AUTOCONF_VERSION])])dnl
  333 _AM_AUTOCONF_VERSION(m4_defn([AC_AUTOCONF_VERSION]))])
  334 
  335 # AM_AUX_DIR_EXPAND                                         -*- Autoconf -*-
  336 
  337 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
  338 #
  339 # This file is free software; the Free Software Foundation
  340 # gives unlimited permission to copy and/or distribute it,
  341 # with or without modifications, as long as this notice is preserved.
  342 
  343 # For projects using AC_CONFIG_AUX_DIR([foo]), Autoconf sets
  344 # $ac_aux_dir to '$srcdir/foo'.  In other projects, it is set to
  345 # '$srcdir', '$srcdir/..', or '$srcdir/../..'.
  346 #
  347 # Of course, Automake must honor this variable whenever it calls a
  348 # tool from the auxiliary directory.  The problem is that $srcdir (and
  349 # therefore $ac_aux_dir as well) can be either absolute or relative,
  350 # depending on how configure is run.  This is pretty annoying, since
  351 # it makes $ac_aux_dir quite unusable in subdirectories: in the top
  352 # source directory, any form will work fine, but in subdirectories a
  353 # relative path needs to be adjusted first.
  354 #
  355 # $ac_aux_dir/missing
  356 #    fails when called from a subdirectory if $ac_aux_dir is relative
  357 # $top_srcdir/$ac_aux_dir/missing
  358 #    fails if $ac_aux_dir is absolute,
  359 #    fails when called from a subdirectory in a VPATH build with
  360 #          a relative $ac_aux_dir
  361 #
  362 # The reason of the latter failure is that $top_srcdir and $ac_aux_dir
  363 # are both prefixed by $srcdir.  In an in-source build this is usually
  364 # harmless because $srcdir is '.', but things will broke when you
  365 # start a VPATH build or use an absolute $srcdir.
  366 #
  367 # So we could use something similar to $top_srcdir/$ac_aux_dir/missing,
  368 # iff we strip the leading $srcdir from $ac_aux_dir.  That would be:
  369 #   am_aux_dir='\$(top_srcdir)/'`expr "$ac_aux_dir" : "$srcdir//*\(.*\)"`
  370 # and then we would define $MISSING as
  371 #   MISSING="\${SHELL} $am_aux_dir/missing"
  372 # This will work as long as MISSING is not called from configure, because
  373 # unfortunately $(top_srcdir) has no meaning in configure.
  374 # However there are other variables, like CC, which are often used in
  375 # configure, and could therefore not use this "fixed" $ac_aux_dir.
  376 #
  377 # Another solution, used here, is to always expand $ac_aux_dir to an
  378 # absolute PATH.  The drawback is that using absolute paths prevent a
  379 # configured tree to be moved without reconfiguration.
  380 
  381 AC_DEFUN([AM_AUX_DIR_EXPAND],
  382 [AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT])dnl
  383 # Expand $ac_aux_dir to an absolute path.
  384 am_aux_dir=`cd "$ac_aux_dir" && pwd`
  385 ])
  386 
  387 # AM_CONDITIONAL                                            -*- Autoconf -*-
  388 
  389 # Copyright (C) 1997-2018 Free Software Foundation, Inc.
  390 #
  391 # This file is free software; the Free Software Foundation
  392 # gives unlimited permission to copy and/or distribute it,
  393 # with or without modifications, as long as this notice is preserved.
  394 
  395 # AM_CONDITIONAL(NAME, SHELL-CONDITION)
  396 # -------------------------------------
  397 # Define a conditional.
  398 AC_DEFUN([AM_CONDITIONAL],
  399 [AC_PREREQ([2.52])dnl
  400  m4_if([$1], [TRUE],  [AC_FATAL([$0: invalid condition: $1])],
  401        [$1], [FALSE], [AC_FATAL([$0: invalid condition: $1])])dnl
  402 AC_SUBST([$1_TRUE])dnl
  403 AC_SUBST([$1_FALSE])dnl
  404 _AM_SUBST_NOTMAKE([$1_TRUE])dnl
  405 _AM_SUBST_NOTMAKE([$1_FALSE])dnl
  406 m4_define([_AM_COND_VALUE_$1], [$2])dnl
  407 if $2; then
  408   $1_TRUE=
  409   $1_FALSE='#'
  410 else
  411   $1_TRUE='#'
  412   $1_FALSE=
  413 fi
  414 AC_CONFIG_COMMANDS_PRE(
  415 [if test -z "${$1_TRUE}" && test -z "${$1_FALSE}"; then
  416   AC_MSG_ERROR([[conditional "$1" was never defined.
  417 Usually this means the macro was only invoked conditionally.]])
  418 fi])])
  419 
  420 # Copyright (C) 1999-2018 Free Software Foundation, Inc.
  421 #
  422 # This file is free software; the Free Software Foundation
  423 # gives unlimited permission to copy and/or distribute it,
  424 # with or without modifications, as long as this notice is preserved.
  425 
  426 
  427 # There are a few dirty hacks below to avoid letting 'AC_PROG_CC' be
  428 # written in clear, in which case automake, when reading aclocal.m4,
  429 # will think it sees a *use*, and therefore will trigger all it's
  430 # C support machinery.  Also note that it means that autoscan, seeing
  431 # CC etc. in the Makefile, will ask for an AC_PROG_CC use...
  432 
  433 
  434 # _AM_DEPENDENCIES(NAME)
  435 # ----------------------
  436 # See how the compiler implements dependency checking.
  437 # NAME is "CC", "CXX", "OBJC", "OBJCXX", "UPC", or "GJC".
  438 # We try a few techniques and use that to set a single cache variable.
  439 #
  440 # We don't AC_REQUIRE the corresponding AC_PROG_CC since the latter was
  441 # modified to invoke _AM_DEPENDENCIES(CC); we would have a circular
  442 # dependency, and given that the user is not expected to run this macro,
  443 # just rely on AC_PROG_CC.
  444 AC_DEFUN([_AM_DEPENDENCIES],
  445 [AC_REQUIRE([AM_SET_DEPDIR])dnl
  446 AC_REQUIRE([AM_OUTPUT_DEPENDENCY_COMMANDS])dnl
  447 AC_REQUIRE([AM_MAKE_INCLUDE])dnl
  448 AC_REQUIRE([AM_DEP_TRACK])dnl
  449 
  450 m4_if([$1], [CC],   [depcc="$CC"   am_compiler_list=],
  451       [$1], [CXX],  [depcc="$CXX"  am_compiler_list=],
  452       [$1], [OBJC], [depcc="$OBJC" am_compiler_list='gcc3 gcc'],
  453       [$1], [OBJCXX], [depcc="$OBJCXX" am_compiler_list='gcc3 gcc'],
  454       [$1], [UPC],  [depcc="$UPC"  am_compiler_list=],
  455       [$1], [GCJ],  [depcc="$GCJ"  am_compiler_list='gcc3 gcc'],
  456                     [depcc="$$1"   am_compiler_list=])
  457 
  458 AC_CACHE_CHECK([dependency style of $depcc],
  459                [am_cv_$1_dependencies_compiler_type],
  460 [if test -z "$AMDEP_TRUE" && test -f "$am_depcomp"; then
  461   # We make a subdir and do the tests there.  Otherwise we can end up
  462   # making bogus files that we don't know about and never remove.  For
  463   # instance it was reported that on HP-UX the gcc test will end up
  464   # making a dummy file named 'D' -- because '-MD' means "put the output
  465   # in D".
  466   rm -rf conftest.dir
  467   mkdir conftest.dir
  468   # Copy depcomp to subdir because otherwise we won't find it if we're
  469   # using a relative directory.
  470   cp "$am_depcomp" conftest.dir
  471   cd conftest.dir
  472   # We will build objects and dependencies in a subdirectory because
  473   # it helps to detect inapplicable dependency modes.  For instance
  474   # both Tru64's cc and ICC support -MD to output dependencies as a
  475   # side effect of compilation, but ICC will put the dependencies in
  476   # the current directory while Tru64 will put them in the object
  477   # directory.
  478   mkdir sub
  479 
  480   am_cv_$1_dependencies_compiler_type=none
  481   if test "$am_compiler_list" = ""; then
  482      am_compiler_list=`sed -n ['s/^#*\([a-zA-Z0-9]*\))$/\1/p'] < ./depcomp`
  483   fi
  484   am__universal=false
  485   m4_case([$1], [CC],
  486     [case " $depcc " in #(
  487      *\ -arch\ *\ -arch\ *) am__universal=true ;;
  488      esac],
  489     [CXX],
  490     [case " $depcc " in #(
  491      *\ -arch\ *\ -arch\ *) am__universal=true ;;
  492      esac])
  493 
  494   for depmode in $am_compiler_list; do
  495     # Setup a source with many dependencies, because some compilers
  496     # like to wrap large dependency lists on column 80 (with \), and
  497     # we should not choose a depcomp mode which is confused by this.
  498     #
  499     # We need to recreate these files for each test, as the compiler may
  500     # overwrite some of them when testing with obscure command lines.
  501     # This happens at least with the AIX C compiler.
  502     : > sub/conftest.c
  503     for i in 1 2 3 4 5 6; do
  504       echo '#include "conftst'$i'.h"' >> sub/conftest.c
  505       # Using ": > sub/conftst$i.h" creates only sub/conftst1.h with
  506       # Solaris 10 /bin/sh.
  507       echo '/* dummy */' > sub/conftst$i.h
  508     done
  509     echo "${am__include} ${am__quote}sub/conftest.Po${am__quote}" > confmf
  510 
  511     # We check with '-c' and '-o' for the sake of the "dashmstdout"
  512     # mode.  It turns out that the SunPro C++ compiler does not properly
  513     # handle '-M -o', and we need to detect this.  Also, some Intel
  514     # versions had trouble with output in subdirs.
  515     am__obj=sub/conftest.${OBJEXT-o}
  516     am__minus_obj="-o $am__obj"
  517     case $depmode in
  518     gcc)
  519       # This depmode causes a compiler race in universal mode.
  520       test "$am__universal" = false || continue
  521       ;;
  522     nosideeffect)
  523       # After this tag, mechanisms are not by side-effect, so they'll
  524       # only be used when explicitly requested.
  525       if test "x$enable_dependency_tracking" = xyes; then
  526 	continue
  527       else
  528 	break
  529       fi
  530       ;;
  531     msvc7 | msvc7msys | msvisualcpp | msvcmsys)
  532       # This compiler won't grok '-c -o', but also, the minuso test has
  533       # not run yet.  These depmodes are late enough in the game, and
  534       # so weak that their functioning should not be impacted.
  535       am__obj=conftest.${OBJEXT-o}
  536       am__minus_obj=
  537       ;;
  538     none) break ;;
  539     esac
  540     if depmode=$depmode \
  541        source=sub/conftest.c object=$am__obj \
  542        depfile=sub/conftest.Po tmpdepfile=sub/conftest.TPo \
  543        $SHELL ./depcomp $depcc -c $am__minus_obj sub/conftest.c \
  544          >/dev/null 2>conftest.err &&
  545        grep sub/conftst1.h sub/conftest.Po > /dev/null 2>&1 &&
  546        grep sub/conftst6.h sub/conftest.Po > /dev/null 2>&1 &&
  547        grep $am__obj sub/conftest.Po > /dev/null 2>&1 &&
  548        ${MAKE-make} -s -f confmf > /dev/null 2>&1; then
  549       # icc doesn't choke on unknown options, it will just issue warnings
  550       # or remarks (even with -Werror).  So we grep stderr for any message
  551       # that says an option was ignored or not supported.
  552       # When given -MP, icc 7.0 and 7.1 complain thusly:
  553       #   icc: Command line warning: ignoring option '-M'; no argument required
  554       # The diagnosis changed in icc 8.0:
  555       #   icc: Command line remark: option '-MP' not supported
  556       if (grep 'ignoring option' conftest.err ||
  557           grep 'not supported' conftest.err) >/dev/null 2>&1; then :; else
  558         am_cv_$1_dependencies_compiler_type=$depmode
  559         break
  560       fi
  561     fi
  562   done
  563 
  564   cd ..
  565   rm -rf conftest.dir
  566 else
  567   am_cv_$1_dependencies_compiler_type=none
  568 fi
  569 ])
  570 AC_SUBST([$1DEPMODE], [depmode=$am_cv_$1_dependencies_compiler_type])
  571 AM_CONDITIONAL([am__fastdep$1], [
  572   test "x$enable_dependency_tracking" != xno \
  573   && test "$am_cv_$1_dependencies_compiler_type" = gcc3])
  574 ])
  575 
  576 
  577 # AM_SET_DEPDIR
  578 # -------------
  579 # Choose a directory name for dependency files.
  580 # This macro is AC_REQUIREd in _AM_DEPENDENCIES.
  581 AC_DEFUN([AM_SET_DEPDIR],
  582 [AC_REQUIRE([AM_SET_LEADING_DOT])dnl
  583 AC_SUBST([DEPDIR], ["${am__leading_dot}deps"])dnl
  584 ])
  585 
  586 
  587 # AM_DEP_TRACK
  588 # ------------
  589 AC_DEFUN([AM_DEP_TRACK],
  590 [AC_ARG_ENABLE([dependency-tracking], [dnl
  591 AS_HELP_STRING(
  592   [--enable-dependency-tracking],
  593   [do not reject slow dependency extractors])
  594 AS_HELP_STRING(
  595   [--disable-dependency-tracking],
  596   [speeds up one-time build])])
  597 if test "x$enable_dependency_tracking" != xno; then
  598   am_depcomp="$ac_aux_dir/depcomp"
  599   AMDEPBACKSLASH='\'
  600   am__nodep='_no'
  601 fi
  602 AM_CONDITIONAL([AMDEP], [test "x$enable_dependency_tracking" != xno])
  603 AC_SUBST([AMDEPBACKSLASH])dnl
  604 _AM_SUBST_NOTMAKE([AMDEPBACKSLASH])dnl
  605 AC_SUBST([am__nodep])dnl
  606 _AM_SUBST_NOTMAKE([am__nodep])dnl
  607 ])
  608 
  609 # Generate code to set up dependency tracking.              -*- Autoconf -*-
  610 
  611 # Copyright (C) 1999-2018 Free Software Foundation, Inc.
  612 #
  613 # This file is free software; the Free Software Foundation
  614 # gives unlimited permission to copy and/or distribute it,
  615 # with or without modifications, as long as this notice is preserved.
  616 
  617 # _AM_OUTPUT_DEPENDENCY_COMMANDS
  618 # ------------------------------
  619 AC_DEFUN([_AM_OUTPUT_DEPENDENCY_COMMANDS],
  620 [{
  621   # Older Autoconf quotes --file arguments for eval, but not when files
  622   # are listed without --file.  Let's play safe and only enable the eval
  623   # if we detect the quoting.
  624   # TODO: see whether this extra hack can be removed once we start
  625   # requiring Autoconf 2.70 or later.
  626   AS_CASE([$CONFIG_FILES],
  627           [*\'*], [eval set x "$CONFIG_FILES"],
  628           [*], [set x $CONFIG_FILES])
  629   shift
  630   # Used to flag and report bootstrapping failures.
  631   am_rc=0
  632   for am_mf
  633   do
  634     # Strip MF so we end up with the name of the file.
  635     am_mf=`AS_ECHO(["$am_mf"]) | sed -e 's/:.*$//'`
  636     # Check whether this is an Automake generated Makefile which includes
  637     # dependency-tracking related rules and includes.
  638     # Grep'ing the whole file directly is not great: AIX grep has a line
  639     # limit of 2048, but all sed's we know have understand at least 4000.
  640     sed -n 's,^am--depfiles:.*,X,p' "$am_mf" | grep X >/dev/null 2>&1 \
  641       || continue
  642     am_dirpart=`AS_DIRNAME(["$am_mf"])`
  643     am_filepart=`AS_BASENAME(["$am_mf"])`
  644     AM_RUN_LOG([cd "$am_dirpart" \
  645       && sed -e '/# am--include-marker/d' "$am_filepart" \
  646         | $MAKE -f - am--depfiles]) || am_rc=$?
  647   done
  648   if test $am_rc -ne 0; then
  649     AC_MSG_FAILURE([Something went wrong bootstrapping makefile fragments
  650     for automatic dependency tracking.  Try re-running configure with the
  651     '--disable-dependency-tracking' option to at least be able to build
  652     the package (albeit without support for automatic dependency tracking).])
  653   fi
  654   AS_UNSET([am_dirpart])
  655   AS_UNSET([am_filepart])
  656   AS_UNSET([am_mf])
  657   AS_UNSET([am_rc])
  658   rm -f conftest-deps.mk
  659 }
  660 ])# _AM_OUTPUT_DEPENDENCY_COMMANDS
  661 
  662 
  663 # AM_OUTPUT_DEPENDENCY_COMMANDS
  664 # -----------------------------
  665 # This macro should only be invoked once -- use via AC_REQUIRE.
  666 #
  667 # This code is only required when automatic dependency tracking is enabled.
  668 # This creates each '.Po' and '.Plo' makefile fragment that we'll need in
  669 # order to bootstrap the dependency handling code.
  670 AC_DEFUN([AM_OUTPUT_DEPENDENCY_COMMANDS],
  671 [AC_CONFIG_COMMANDS([depfiles],
  672      [test x"$AMDEP_TRUE" != x"" || _AM_OUTPUT_DEPENDENCY_COMMANDS],
  673      [AMDEP_TRUE="$AMDEP_TRUE" MAKE="${MAKE-make}"])])
  674 
  675 # Do all the work for Automake.                             -*- Autoconf -*-
  676 
  677 # Copyright (C) 1996-2018 Free Software Foundation, Inc.
  678 #
  679 # This file is free software; the Free Software Foundation
  680 # gives unlimited permission to copy and/or distribute it,
  681 # with or without modifications, as long as this notice is preserved.
  682 
  683 # This macro actually does too much.  Some checks are only needed if
  684 # your package does certain things.  But this isn't really a big deal.
  685 
  686 dnl Redefine AC_PROG_CC to automatically invoke _AM_PROG_CC_C_O.
  687 m4_define([AC_PROG_CC],
  688 m4_defn([AC_PROG_CC])
  689 [_AM_PROG_CC_C_O
  690 ])
  691 
  692 # AM_INIT_AUTOMAKE(PACKAGE, VERSION, [NO-DEFINE])
  693 # AM_INIT_AUTOMAKE([OPTIONS])
  694 # -----------------------------------------------
  695 # The call with PACKAGE and VERSION arguments is the old style
  696 # call (pre autoconf-2.50), which is being phased out.  PACKAGE
  697 # and VERSION should now be passed to AC_INIT and removed from
  698 # the call to AM_INIT_AUTOMAKE.
  699 # We support both call styles for the transition.  After
  700 # the next Automake release, Autoconf can make the AC_INIT
  701 # arguments mandatory, and then we can depend on a new Autoconf
  702 # release and drop the old call support.
  703 AC_DEFUN([AM_INIT_AUTOMAKE],
  704 [AC_PREREQ([2.65])dnl
  705 dnl Autoconf wants to disallow AM_ names.  We explicitly allow
  706 dnl the ones we care about.
  707 m4_pattern_allow([^AM_[A-Z]+FLAGS$])dnl
  708 AC_REQUIRE([AM_SET_CURRENT_AUTOMAKE_VERSION])dnl
  709 AC_REQUIRE([AC_PROG_INSTALL])dnl
  710 if test "`cd $srcdir && pwd`" != "`pwd`"; then
  711   # Use -I$(srcdir) only when $(srcdir) != ., so that make's output
  712   # is not polluted with repeated "-I."
  713   AC_SUBST([am__isrc], [' -I$(srcdir)'])_AM_SUBST_NOTMAKE([am__isrc])dnl
  714   # test to see if srcdir already configured
  715   if test -f $srcdir/config.status; then
  716     AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
  717   fi
  718 fi
  719 
  720 # test whether we have cygpath
  721 if test -z "$CYGPATH_W"; then
  722   if (cygpath --version) >/dev/null 2>/dev/null; then
  723     CYGPATH_W='cygpath -w'
  724   else
  725     CYGPATH_W=echo
  726   fi
  727 fi
  728 AC_SUBST([CYGPATH_W])
  729 
  730 # Define the identity of the package.
  731 dnl Distinguish between old-style and new-style calls.
  732 m4_ifval([$2],
  733 [AC_DIAGNOSE([obsolete],
  734              [$0: two- and three-arguments forms are deprecated.])
  735 m4_ifval([$3], [_AM_SET_OPTION([no-define])])dnl
  736  AC_SUBST([PACKAGE], [$1])dnl
  737  AC_SUBST([VERSION], [$2])],
  738 [_AM_SET_OPTIONS([$1])dnl
  739 dnl Diagnose old-style AC_INIT with new-style AM_AUTOMAKE_INIT.
  740 m4_if(
  741   m4_ifdef([AC_PACKAGE_NAME], [ok]):m4_ifdef([AC_PACKAGE_VERSION], [ok]),
  742   [ok:ok],,
  743   [m4_fatal([AC_INIT should be called with package and version arguments])])dnl
  744  AC_SUBST([PACKAGE], ['AC_PACKAGE_TARNAME'])dnl
  745  AC_SUBST([VERSION], ['AC_PACKAGE_VERSION'])])dnl
  746 
  747 _AM_IF_OPTION([no-define],,
  748 [AC_DEFINE_UNQUOTED([PACKAGE], ["$PACKAGE"], [Name of package])
  749  AC_DEFINE_UNQUOTED([VERSION], ["$VERSION"], [Version number of package])])dnl
  750 
  751 # Some tools Automake needs.
  752 AC_REQUIRE([AM_SANITY_CHECK])dnl
  753 AC_REQUIRE([AC_ARG_PROGRAM])dnl
  754 AM_MISSING_PROG([ACLOCAL], [aclocal-${am__api_version}])
  755 AM_MISSING_PROG([AUTOCONF], [autoconf])
  756 AM_MISSING_PROG([AUTOMAKE], [automake-${am__api_version}])
  757 AM_MISSING_PROG([AUTOHEADER], [autoheader])
  758 AM_MISSING_PROG([MAKEINFO], [makeinfo])
  759 AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
  760 AC_REQUIRE([AM_PROG_INSTALL_STRIP])dnl
  761 AC_REQUIRE([AC_PROG_MKDIR_P])dnl
  762 # For better backward compatibility.  To be removed once Automake 1.9.x
  763 # dies out for good.  For more background, see:
  764 # <https://lists.gnu.org/archive/html/automake/2012-07/msg00001.html>
  765 # <https://lists.gnu.org/archive/html/automake/2012-07/msg00014.html>
  766 AC_SUBST([mkdir_p], ['$(MKDIR_P)'])
  767 # We need awk for the "check" target (and possibly the TAP driver).  The
  768 # system "awk" is bad on some platforms.
  769 AC_REQUIRE([AC_PROG_AWK])dnl
  770 AC_REQUIRE([AC_PROG_MAKE_SET])dnl
  771 AC_REQUIRE([AM_SET_LEADING_DOT])dnl
  772 _AM_IF_OPTION([tar-ustar], [_AM_PROG_TAR([ustar])],
  773 	      [_AM_IF_OPTION([tar-pax], [_AM_PROG_TAR([pax])],
  774 			     [_AM_PROG_TAR([v7])])])
  775 _AM_IF_OPTION([no-dependencies],,
  776 [AC_PROVIDE_IFELSE([AC_PROG_CC],
  777 		  [_AM_DEPENDENCIES([CC])],
  778 		  [m4_define([AC_PROG_CC],
  779 			     m4_defn([AC_PROG_CC])[_AM_DEPENDENCIES([CC])])])dnl
  780 AC_PROVIDE_IFELSE([AC_PROG_CXX],
  781 		  [_AM_DEPENDENCIES([CXX])],
  782 		  [m4_define([AC_PROG_CXX],
  783 			     m4_defn([AC_PROG_CXX])[_AM_DEPENDENCIES([CXX])])])dnl
  784 AC_PROVIDE_IFELSE([AC_PROG_OBJC],
  785 		  [_AM_DEPENDENCIES([OBJC])],
  786 		  [m4_define([AC_PROG_OBJC],
  787 			     m4_defn([AC_PROG_OBJC])[_AM_DEPENDENCIES([OBJC])])])dnl
  788 AC_PROVIDE_IFELSE([AC_PROG_OBJCXX],
  789 		  [_AM_DEPENDENCIES([OBJCXX])],
  790 		  [m4_define([AC_PROG_OBJCXX],
  791 			     m4_defn([AC_PROG_OBJCXX])[_AM_DEPENDENCIES([OBJCXX])])])dnl
  792 ])
  793 AC_REQUIRE([AM_SILENT_RULES])dnl
  794 dnl The testsuite driver may need to know about EXEEXT, so add the
  795 dnl 'am__EXEEXT' conditional if _AM_COMPILER_EXEEXT was seen.  This
  796 dnl macro is hooked onto _AC_COMPILER_EXEEXT early, see below.
  797 AC_CONFIG_COMMANDS_PRE(dnl
  798 [m4_provide_if([_AM_COMPILER_EXEEXT],
  799   [AM_CONDITIONAL([am__EXEEXT], [test -n "$EXEEXT"])])])dnl
  800 
  801 # POSIX will say in a future version that running "rm -f" with no argument
  802 # is OK; and we want to be able to make that assumption in our Makefile
  803 # recipes.  So use an aggressive probe to check that the usage we want is
  804 # actually supported "in the wild" to an acceptable degree.
  805 # See automake bug#10828.
  806 # To make any issue more visible, cause the running configure to be aborted
  807 # by default if the 'rm' program in use doesn't match our expectations; the
  808 # user can still override this though.
  809 if rm -f && rm -fr && rm -rf; then : OK; else
  810   cat >&2 <<'END'
  811 Oops!
  812 
  813 Your 'rm' program seems unable to run without file operands specified
  814 on the command line, even when the '-f' option is present.  This is contrary
  815 to the behaviour of most rm programs out there, and not conforming with
  816 the upcoming POSIX standard: <http://austingroupbugs.net/view.php?id=542>
  817 
  818 Please tell bug-automake@gnu.org about your system, including the value
  819 of your $PATH and any error possibly output before this message.  This
  820 can help us improve future automake versions.
  821 
  822 END
  823   if test x"$ACCEPT_INFERIOR_RM_PROGRAM" = x"yes"; then
  824     echo 'Configuration will proceed anyway, since you have set the' >&2
  825     echo 'ACCEPT_INFERIOR_RM_PROGRAM variable to "yes"' >&2
  826     echo >&2
  827   else
  828     cat >&2 <<'END'
  829 Aborting the configuration process, to ensure you take notice of the issue.
  830 
  831 You can download and install GNU coreutils to get an 'rm' implementation
  832 that behaves properly: <https://www.gnu.org/software/coreutils/>.
  833 
  834 If you want to complete the configuration process using your problematic
  835 'rm' anyway, export the environment variable ACCEPT_INFERIOR_RM_PROGRAM
  836 to "yes", and re-run configure.
  837 
  838 END
  839     AC_MSG_ERROR([Your 'rm' program is bad, sorry.])
  840   fi
  841 fi
  842 dnl The trailing newline in this macro's definition is deliberate, for
  843 dnl backward compatibility and to allow trailing 'dnl'-style comments
  844 dnl after the AM_INIT_AUTOMAKE invocation. See automake bug#16841.
  845 ])
  846 
  847 dnl Hook into '_AC_COMPILER_EXEEXT' early to learn its expansion.  Do not
  848 dnl add the conditional right here, as _AC_COMPILER_EXEEXT may be further
  849 dnl mangled by Autoconf and run in a shell conditional statement.
  850 m4_define([_AC_COMPILER_EXEEXT],
  851 m4_defn([_AC_COMPILER_EXEEXT])[m4_provide([_AM_COMPILER_EXEEXT])])
  852 
  853 # When config.status generates a header, we must update the stamp-h file.
  854 # This file resides in the same directory as the config header
  855 # that is generated.  The stamp files are numbered to have different names.
  856 
  857 # Autoconf calls _AC_AM_CONFIG_HEADER_HOOK (when defined) in the
  858 # loop where config.status creates the headers, so we can generate
  859 # our stamp files there.
  860 AC_DEFUN([_AC_AM_CONFIG_HEADER_HOOK],
  861 [# Compute $1's index in $config_headers.
  862 _am_arg=$1
  863 _am_stamp_count=1
  864 for _am_header in $config_headers :; do
  865   case $_am_header in
  866     $_am_arg | $_am_arg:* )
  867       break ;;
  868     * )
  869       _am_stamp_count=`expr $_am_stamp_count + 1` ;;
  870   esac
  871 done
  872 echo "timestamp for $_am_arg" >`AS_DIRNAME(["$_am_arg"])`/stamp-h[]$_am_stamp_count])
  873 
  874 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
  875 #
  876 # This file is free software; the Free Software Foundation
  877 # gives unlimited permission to copy and/or distribute it,
  878 # with or without modifications, as long as this notice is preserved.
  879 
  880 # AM_PROG_INSTALL_SH
  881 # ------------------
  882 # Define $install_sh.
  883 AC_DEFUN([AM_PROG_INSTALL_SH],
  884 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
  885 if test x"${install_sh+set}" != xset; then
  886   case $am_aux_dir in
  887   *\ * | *\	*)
  888     install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
  889   *)
  890     install_sh="\${SHELL} $am_aux_dir/install-sh"
  891   esac
  892 fi
  893 AC_SUBST([install_sh])])
  894 
  895 # Copyright (C) 2003-2018 Free Software Foundation, Inc.
  896 #
  897 # This file is free software; the Free Software Foundation
  898 # gives unlimited permission to copy and/or distribute it,
  899 # with or without modifications, as long as this notice is preserved.
  900 
  901 # Check whether the underlying file-system supports filenames
  902 # with a leading dot.  For instance MS-DOS doesn't.
  903 AC_DEFUN([AM_SET_LEADING_DOT],
  904 [rm -rf .tst 2>/dev/null
  905 mkdir .tst 2>/dev/null
  906 if test -d .tst; then
  907   am__leading_dot=.
  908 else
  909   am__leading_dot=_
  910 fi
  911 rmdir .tst 2>/dev/null
  912 AC_SUBST([am__leading_dot])])
  913 
  914 # Check to see how 'make' treats includes.	            -*- Autoconf -*-
  915 
  916 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
  917 #
  918 # This file is free software; the Free Software Foundation
  919 # gives unlimited permission to copy and/or distribute it,
  920 # with or without modifications, as long as this notice is preserved.
  921 
  922 # AM_MAKE_INCLUDE()
  923 # -----------------
  924 # Check whether make has an 'include' directive that can support all
  925 # the idioms we need for our automatic dependency tracking code.
  926 AC_DEFUN([AM_MAKE_INCLUDE],
  927 [AC_MSG_CHECKING([whether ${MAKE-make} supports the include directive])
  928 cat > confinc.mk << 'END'
  929 am__doit:
  930 	@echo this is the am__doit target >confinc.out
  931 .PHONY: am__doit
  932 END
  933 am__include="#"
  934 am__quote=
  935 # BSD make does it like this.
  936 echo '.include "confinc.mk" # ignored' > confmf.BSD
  937 # Other make implementations (GNU, Solaris 10, AIX) do it like this.
  938 echo 'include confinc.mk # ignored' > confmf.GNU
  939 _am_result=no
  940 for s in GNU BSD; do
  941   AM_RUN_LOG([${MAKE-make} -f confmf.$s && cat confinc.out])
  942   AS_CASE([$?:`cat confinc.out 2>/dev/null`],
  943       ['0:this is the am__doit target'],
  944       [AS_CASE([$s],
  945           [BSD], [am__include='.include' am__quote='"'],
  946           [am__include='include' am__quote=''])])
  947   if test "$am__include" != "#"; then
  948     _am_result="yes ($s style)"
  949     break
  950   fi
  951 done
  952 rm -f confinc.* confmf.*
  953 AC_MSG_RESULT([${_am_result}])
  954 AC_SUBST([am__include])])
  955 AC_SUBST([am__quote])])
  956 
  957 # Fake the existence of programs that GNU maintainers use.  -*- Autoconf -*-
  958 
  959 # Copyright (C) 1997-2018 Free Software Foundation, Inc.
  960 #
  961 # This file is free software; the Free Software Foundation
  962 # gives unlimited permission to copy and/or distribute it,
  963 # with or without modifications, as long as this notice is preserved.
  964 
  965 # AM_MISSING_PROG(NAME, PROGRAM)
  966 # ------------------------------
  967 AC_DEFUN([AM_MISSING_PROG],
  968 [AC_REQUIRE([AM_MISSING_HAS_RUN])
  969 $1=${$1-"${am_missing_run}$2"}
  970 AC_SUBST($1)])
  971 
  972 # AM_MISSING_HAS_RUN
  973 # ------------------
  974 # Define MISSING if not defined so far and test if it is modern enough.
  975 # If it is, set am_missing_run to use it, otherwise, to nothing.
  976 AC_DEFUN([AM_MISSING_HAS_RUN],
  977 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
  978 AC_REQUIRE_AUX_FILE([missing])dnl
  979 if test x"${MISSING+set}" != xset; then
  980   case $am_aux_dir in
  981   *\ * | *\	*)
  982     MISSING="\${SHELL} \"$am_aux_dir/missing\"" ;;
  983   *)
  984     MISSING="\${SHELL} $am_aux_dir/missing" ;;
  985   esac
  986 fi
  987 # Use eval to expand $SHELL
  988 if eval "$MISSING --is-lightweight"; then
  989   am_missing_run="$MISSING "
  990 else
  991   am_missing_run=
  992   AC_MSG_WARN(['missing' script is too old or missing])
  993 fi
  994 ])
  995 
  996 # Helper functions for option handling.                     -*- Autoconf -*-
  997 
  998 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
  999 #
 1000 # This file is free software; the Free Software Foundation
 1001 # gives unlimited permission to copy and/or distribute it,
 1002 # with or without modifications, as long as this notice is preserved.
 1003 
 1004 # _AM_MANGLE_OPTION(NAME)
 1005 # -----------------------
 1006 AC_DEFUN([_AM_MANGLE_OPTION],
 1007 [[_AM_OPTION_]m4_bpatsubst($1, [[^a-zA-Z0-9_]], [_])])
 1008 
 1009 # _AM_SET_OPTION(NAME)
 1010 # --------------------
 1011 # Set option NAME.  Presently that only means defining a flag for this option.
 1012 AC_DEFUN([_AM_SET_OPTION],
 1013 [m4_define(_AM_MANGLE_OPTION([$1]), [1])])
 1014 
 1015 # _AM_SET_OPTIONS(OPTIONS)
 1016 # ------------------------
 1017 # OPTIONS is a space-separated list of Automake options.
 1018 AC_DEFUN([_AM_SET_OPTIONS],
 1019 [m4_foreach_w([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])])
 1020 
 1021 # _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET])
 1022 # -------------------------------------------
 1023 # Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
 1024 AC_DEFUN([_AM_IF_OPTION],
 1025 [m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])
 1026 
 1027 # Copyright (C) 1999-2018 Free Software Foundation, Inc.
 1028 #
 1029 # This file is free software; the Free Software Foundation
 1030 # gives unlimited permission to copy and/or distribute it,
 1031 # with or without modifications, as long as this notice is preserved.
 1032 
 1033 # _AM_PROG_CC_C_O
 1034 # ---------------
 1035 # Like AC_PROG_CC_C_O, but changed for automake.  We rewrite AC_PROG_CC
 1036 # to automatically call this.
 1037 AC_DEFUN([_AM_PROG_CC_C_O],
 1038 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
 1039 AC_REQUIRE_AUX_FILE([compile])dnl
 1040 AC_LANG_PUSH([C])dnl
 1041 AC_CACHE_CHECK(
 1042   [whether $CC understands -c and -o together],
 1043   [am_cv_prog_cc_c_o],
 1044   [AC_LANG_CONFTEST([AC_LANG_PROGRAM([])])
 1045   # Make sure it works both with $CC and with simple cc.
 1046   # Following AC_PROG_CC_C_O, we do the test twice because some
 1047   # compilers refuse to overwrite an existing .o file with -o,
 1048   # though they will create one.
 1049   am_cv_prog_cc_c_o=yes
 1050   for am_i in 1 2; do
 1051     if AM_RUN_LOG([$CC -c conftest.$ac_ext -o conftest2.$ac_objext]) \
 1052          && test -f conftest2.$ac_objext; then
 1053       : OK
 1054     else
 1055       am_cv_prog_cc_c_o=no
 1056       break
 1057     fi
 1058   done
 1059   rm -f core conftest*
 1060   unset am_i])
 1061 if test "$am_cv_prog_cc_c_o" != yes; then
 1062    # Losing compiler, so override with the script.
 1063    # FIXME: It is wrong to rewrite CC.
 1064    # But if we don't then we get into trouble of one sort or another.
 1065    # A longer-term fix would be to have automake use am__CC in this case,
 1066    # and then we could set am__CC="\$(top_srcdir)/compile \$(CC)"
 1067    CC="$am_aux_dir/compile $CC"
 1068 fi
 1069 AC_LANG_POP([C])])
 1070 
 1071 # For backward compatibility.
 1072 AC_DEFUN_ONCE([AM_PROG_CC_C_O], [AC_REQUIRE([AC_PROG_CC])])
 1073 
 1074 # Copyright (C) 1999-2018 Free Software Foundation, Inc.
 1075 #
 1076 # This file is free software; the Free Software Foundation
 1077 # gives unlimited permission to copy and/or distribute it,
 1078 # with or without modifications, as long as this notice is preserved.
 1079 
 1080 
 1081 # AM_PATH_PYTHON([MINIMUM-VERSION], [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
 1082 # ---------------------------------------------------------------------------
 1083 # Adds support for distributing Python modules and packages.  To
 1084 # install modules, copy them to $(pythondir), using the python_PYTHON
 1085 # automake variable.  To install a package with the same name as the
 1086 # automake package, install to $(pkgpythondir), or use the
 1087 # pkgpython_PYTHON automake variable.
 1088 #
 1089 # The variables $(pyexecdir) and $(pkgpyexecdir) are provided as
 1090 # locations to install python extension modules (shared libraries).
 1091 # Another macro is required to find the appropriate flags to compile
 1092 # extension modules.
 1093 #
 1094 # If your package is configured with a different prefix to python,
 1095 # users will have to add the install directory to the PYTHONPATH
 1096 # environment variable, or create a .pth file (see the python
 1097 # documentation for details).
 1098 #
 1099 # If the MINIMUM-VERSION argument is passed, AM_PATH_PYTHON will
 1100 # cause an error if the version of python installed on the system
 1101 # doesn't meet the requirement.  MINIMUM-VERSION should consist of
 1102 # numbers and dots only.
 1103 AC_DEFUN([AM_PATH_PYTHON],
 1104  [
 1105   dnl Find a Python interpreter.  Python versions prior to 2.0 are not
 1106   dnl supported. (2.0 was released on October 16, 2000).
 1107   m4_define_default([_AM_PYTHON_INTERPRETER_LIST],
 1108 [python python2 python3 dnl
 1109  python3.9 python3.8 python3.7 python3.6 python3.5 python3.4 python3.3 dnl
 1110  python3.2 python3.1 python3.0 dnl
 1111  python2.7 python2.6 python2.5 python2.4 python2.3 python2.2 python2.1 dnl
 1112  python2.0])
 1113 
 1114   AC_ARG_VAR([PYTHON], [the Python interpreter])
 1115 
 1116   m4_if([$1],[],[
 1117     dnl No version check is needed.
 1118     # Find any Python interpreter.
 1119     if test -z "$PYTHON"; then
 1120       AC_PATH_PROGS([PYTHON], _AM_PYTHON_INTERPRETER_LIST, :)
 1121     fi
 1122     am_display_PYTHON=python
 1123   ], [
 1124     dnl A version check is needed.
 1125     if test -n "$PYTHON"; then
 1126       # If the user set $PYTHON, use it and don't search something else.
 1127       AC_MSG_CHECKING([whether $PYTHON version is >= $1])
 1128       AM_PYTHON_CHECK_VERSION([$PYTHON], [$1],
 1129 			      [AC_MSG_RESULT([yes])],
 1130 			      [AC_MSG_RESULT([no])
 1131 			       AC_MSG_ERROR([Python interpreter is too old])])
 1132       am_display_PYTHON=$PYTHON
 1133     else
 1134       # Otherwise, try each interpreter until we find one that satisfies
 1135       # VERSION.
 1136       AC_CACHE_CHECK([for a Python interpreter with version >= $1],
 1137 	[am_cv_pathless_PYTHON],[
 1138 	for am_cv_pathless_PYTHON in _AM_PYTHON_INTERPRETER_LIST none; do
 1139 	  test "$am_cv_pathless_PYTHON" = none && break
 1140 	  AM_PYTHON_CHECK_VERSION([$am_cv_pathless_PYTHON], [$1], [break])
 1141 	done])
 1142       # Set $PYTHON to the absolute path of $am_cv_pathless_PYTHON.
 1143       if test "$am_cv_pathless_PYTHON" = none; then
 1144 	PYTHON=:
 1145       else
 1146         AC_PATH_PROG([PYTHON], [$am_cv_pathless_PYTHON])
 1147       fi
 1148       am_display_PYTHON=$am_cv_pathless_PYTHON
 1149     fi
 1150   ])
 1151 
 1152   if test "$PYTHON" = :; then
 1153   dnl Run any user-specified action, or abort.
 1154     m4_default([$3], [AC_MSG_ERROR([no suitable Python interpreter found])])
 1155   else
 1156 
 1157   dnl Query Python for its version number.  Getting [:3] seems to be
 1158   dnl the best way to do this; it's what "site.py" does in the standard
 1159   dnl library.
 1160 
 1161   AC_CACHE_CHECK([for $am_display_PYTHON version], [am_cv_python_version],
 1162     [am_cv_python_version=`$PYTHON -c "import sys; sys.stdout.write(sys.version[[:3]])"`])
 1163   AC_SUBST([PYTHON_VERSION], [$am_cv_python_version])
 1164 
 1165   dnl Use the values of $prefix and $exec_prefix for the corresponding
 1166   dnl values of PYTHON_PREFIX and PYTHON_EXEC_PREFIX.  These are made
 1167   dnl distinct variables so they can be overridden if need be.  However,
 1168   dnl general consensus is that you shouldn't need this ability.
 1169 
 1170   AC_SUBST([PYTHON_PREFIX], ['${prefix}'])
 1171   AC_SUBST([PYTHON_EXEC_PREFIX], ['${exec_prefix}'])
 1172 
 1173   dnl At times (like when building shared libraries) you may want
 1174   dnl to know which OS platform Python thinks this is.
 1175 
 1176   AC_CACHE_CHECK([for $am_display_PYTHON platform], [am_cv_python_platform],
 1177     [am_cv_python_platform=`$PYTHON -c "import sys; sys.stdout.write(sys.platform)"`])
 1178   AC_SUBST([PYTHON_PLATFORM], [$am_cv_python_platform])
 1179 
 1180   # Just factor out some code duplication.
 1181   am_python_setup_sysconfig="\
 1182 import sys
 1183 # Prefer sysconfig over distutils.sysconfig, for better compatibility
 1184 # with python 3.x.  See automake bug#10227.
 1185 try:
 1186     import sysconfig
 1187 except ImportError:
 1188     can_use_sysconfig = 0
 1189 else:
 1190     can_use_sysconfig = 1
 1191 # Can't use sysconfig in CPython 2.7, since it's broken in virtualenvs:
 1192 # <https://github.com/pypa/virtualenv/issues/118>
 1193 try:
 1194     from platform import python_implementation
 1195     if python_implementation() == 'CPython' and sys.version[[:3]] == '2.7':
 1196         can_use_sysconfig = 0
 1197 except ImportError:
 1198     pass"
 1199 
 1200   dnl Set up 4 directories:
 1201 
 1202   dnl pythondir -- where to install python scripts.  This is the
 1203   dnl   site-packages directory, not the python standard library
 1204   dnl   directory like in previous automake betas.  This behavior
 1205   dnl   is more consistent with lispdir.m4 for example.
 1206   dnl Query distutils for this directory.
 1207   AC_CACHE_CHECK([for $am_display_PYTHON script directory],
 1208     [am_cv_python_pythondir],
 1209     [if test "x$prefix" = xNONE
 1210      then
 1211        am_py_prefix=$ac_default_prefix
 1212      else
 1213        am_py_prefix=$prefix
 1214      fi
 1215      am_cv_python_pythondir=`$PYTHON -c "
 1216 $am_python_setup_sysconfig
 1217 if can_use_sysconfig:
 1218     sitedir = sysconfig.get_path('purelib', vars={'base':'$am_py_prefix'})
 1219 else:
 1220     from distutils import sysconfig
 1221     sitedir = sysconfig.get_python_lib(0, 0, prefix='$am_py_prefix')
 1222 sys.stdout.write(sitedir)"`
 1223      case $am_cv_python_pythondir in
 1224      $am_py_prefix*)
 1225        am__strip_prefix=`echo "$am_py_prefix" | sed 's|.|.|g'`
 1226        am_cv_python_pythondir=`echo "$am_cv_python_pythondir" | sed "s,^$am__strip_prefix,$PYTHON_PREFIX,"`
 1227        ;;
 1228      *)
 1229        case $am_py_prefix in
 1230          /usr|/System*) ;;
 1231          *)
 1232 	  am_cv_python_pythondir=$PYTHON_PREFIX/lib/python$PYTHON_VERSION/site-packages
 1233 	  ;;
 1234        esac
 1235        ;;
 1236      esac
 1237     ])
 1238   AC_SUBST([pythondir], [$am_cv_python_pythondir])
 1239 
 1240   dnl pkgpythondir -- $PACKAGE directory under pythondir.  Was
 1241   dnl   PYTHON_SITE_PACKAGE in previous betas, but this naming is
 1242   dnl   more consistent with the rest of automake.
 1243 
 1244   AC_SUBST([pkgpythondir], [\${pythondir}/$PACKAGE])
 1245 
 1246   dnl pyexecdir -- directory for installing python extension modules
 1247   dnl   (shared libraries)
 1248   dnl Query distutils for this directory.
 1249   AC_CACHE_CHECK([for $am_display_PYTHON extension module directory],
 1250     [am_cv_python_pyexecdir],
 1251     [if test "x$exec_prefix" = xNONE
 1252      then
 1253        am_py_exec_prefix=$am_py_prefix
 1254      else
 1255        am_py_exec_prefix=$exec_prefix
 1256      fi
 1257      am_cv_python_pyexecdir=`$PYTHON -c "
 1258 $am_python_setup_sysconfig
 1259 if can_use_sysconfig:
 1260     sitedir = sysconfig.get_path('platlib', vars={'platbase':'$am_py_prefix'})
 1261 else:
 1262     from distutils import sysconfig
 1263     sitedir = sysconfig.get_python_lib(1, 0, prefix='$am_py_prefix')
 1264 sys.stdout.write(sitedir)"`
 1265      case $am_cv_python_pyexecdir in
 1266      $am_py_exec_prefix*)
 1267        am__strip_prefix=`echo "$am_py_exec_prefix" | sed 's|.|.|g'`
 1268        am_cv_python_pyexecdir=`echo "$am_cv_python_pyexecdir" | sed "s,^$am__strip_prefix,$PYTHON_EXEC_PREFIX,"`
 1269        ;;
 1270      *)
 1271        case $am_py_exec_prefix in
 1272          /usr|/System*) ;;
 1273          *)
 1274 	   am_cv_python_pyexecdir=$PYTHON_EXEC_PREFIX/lib/python$PYTHON_VERSION/site-packages
 1275 	   ;;
 1276        esac
 1277        ;;
 1278      esac
 1279     ])
 1280   AC_SUBST([pyexecdir], [$am_cv_python_pyexecdir])
 1281 
 1282   dnl pkgpyexecdir -- $(pyexecdir)/$(PACKAGE)
 1283 
 1284   AC_SUBST([pkgpyexecdir], [\${pyexecdir}/$PACKAGE])
 1285 
 1286   dnl Run any user-specified action.
 1287   $2
 1288   fi
 1289 
 1290 ])
 1291 
 1292 
 1293 # AM_PYTHON_CHECK_VERSION(PROG, VERSION, [ACTION-IF-TRUE], [ACTION-IF-FALSE])
 1294 # ---------------------------------------------------------------------------
 1295 # Run ACTION-IF-TRUE if the Python interpreter PROG has version >= VERSION.
 1296 # Run ACTION-IF-FALSE otherwise.
 1297 # This test uses sys.hexversion instead of the string equivalent (first
 1298 # word of sys.version), in order to cope with versions such as 2.2c1.
 1299 # This supports Python 2.0 or higher. (2.0 was released on October 16, 2000).
 1300 AC_DEFUN([AM_PYTHON_CHECK_VERSION],
 1301  [prog="import sys
 1302 # split strings by '.' and convert to numeric.  Append some zeros
 1303 # because we need at least 4 digits for the hex conversion.
 1304 # map returns an iterator in Python 3.0 and a list in 2.x
 1305 minver = list(map(int, '$2'.split('.'))) + [[0, 0, 0]]
 1306 minverhex = 0
 1307 # xrange is not present in Python 3.0 and range returns an iterator
 1308 for i in list(range(0, 4)): minverhex = (minverhex << 8) + minver[[i]]
 1309 sys.exit(sys.hexversion < minverhex)"
 1310   AS_IF([AM_RUN_LOG([$1 -c "$prog"])], [$3], [$4])])
 1311 
 1312 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
 1313 #
 1314 # This file is free software; the Free Software Foundation
 1315 # gives unlimited permission to copy and/or distribute it,
 1316 # with or without modifications, as long as this notice is preserved.
 1317 
 1318 # AM_RUN_LOG(COMMAND)
 1319 # -------------------
 1320 # Run COMMAND, save the exit status in ac_status, and log it.
 1321 # (This has been adapted from Autoconf's _AC_RUN_LOG macro.)
 1322 AC_DEFUN([AM_RUN_LOG],
 1323 [{ echo "$as_me:$LINENO: $1" >&AS_MESSAGE_LOG_FD
 1324    ($1) >&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD
 1325    ac_status=$?
 1326    echo "$as_me:$LINENO: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
 1327    (exit $ac_status); }])
 1328 
 1329 # Check to make sure that the build environment is sane.    -*- Autoconf -*-
 1330 
 1331 # Copyright (C) 1996-2018 Free Software Foundation, Inc.
 1332 #
 1333 # This file is free software; the Free Software Foundation
 1334 # gives unlimited permission to copy and/or distribute it,
 1335 # with or without modifications, as long as this notice is preserved.
 1336 
 1337 # AM_SANITY_CHECK
 1338 # ---------------
 1339 AC_DEFUN([AM_SANITY_CHECK],
 1340 [AC_MSG_CHECKING([whether build environment is sane])
 1341 # Reject unsafe characters in $srcdir or the absolute working directory
 1342 # name.  Accept space and tab only in the latter.
 1343 am_lf='
 1344 '
 1345 case `pwd` in
 1346   *[[\\\"\#\$\&\'\`$am_lf]]*)
 1347     AC_MSG_ERROR([unsafe absolute working directory name]);;
 1348 esac
 1349 case $srcdir in
 1350   *[[\\\"\#\$\&\'\`$am_lf\ \	]]*)
 1351     AC_MSG_ERROR([unsafe srcdir value: '$srcdir']);;
 1352 esac
 1353 
 1354 # Do 'set' in a subshell so we don't clobber the current shell's
 1355 # arguments.  Must try -L first in case configure is actually a
 1356 # symlink; some systems play weird games with the mod time of symlinks
 1357 # (eg FreeBSD returns the mod time of the symlink's containing
 1358 # directory).
 1359 if (
 1360    am_has_slept=no
 1361    for am_try in 1 2; do
 1362      echo "timestamp, slept: $am_has_slept" > conftest.file
 1363      set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
 1364      if test "$[*]" = "X"; then
 1365 	# -L didn't work.
 1366 	set X `ls -t "$srcdir/configure" conftest.file`
 1367      fi
 1368      if test "$[*]" != "X $srcdir/configure conftest.file" \
 1369 	&& test "$[*]" != "X conftest.file $srcdir/configure"; then
 1370 
 1371 	# If neither matched, then we have a broken ls.  This can happen
 1372 	# if, for instance, CONFIG_SHELL is bash and it inherits a
 1373 	# broken ls alias from the environment.  This has actually
 1374 	# happened.  Such a system could not be considered "sane".
 1375 	AC_MSG_ERROR([ls -t appears to fail.  Make sure there is not a broken
 1376   alias in your environment])
 1377      fi
 1378      if test "$[2]" = conftest.file || test $am_try -eq 2; then
 1379        break
 1380      fi
 1381      # Just in case.
 1382      sleep 1
 1383      am_has_slept=yes
 1384    done
 1385    test "$[2]" = conftest.file
 1386    )
 1387 then
 1388    # Ok.
 1389    :
 1390 else
 1391    AC_MSG_ERROR([newly created file is older than distributed files!
 1392 Check your system clock])
 1393 fi
 1394 AC_MSG_RESULT([yes])
 1395 # If we didn't sleep, we still need to ensure time stamps of config.status and
 1396 # generated files are strictly newer.
 1397 am_sleep_pid=
 1398 if grep 'slept: no' conftest.file >/dev/null 2>&1; then
 1399   ( sleep 1 ) &
 1400   am_sleep_pid=$!
 1401 fi
 1402 AC_CONFIG_COMMANDS_PRE(
 1403   [AC_MSG_CHECKING([that generated files are newer than configure])
 1404    if test -n "$am_sleep_pid"; then
 1405      # Hide warnings about reused PIDs.
 1406      wait $am_sleep_pid 2>/dev/null
 1407    fi
 1408    AC_MSG_RESULT([done])])
 1409 rm -f conftest.file
 1410 ])
 1411 
 1412 # Copyright (C) 2009-2018 Free Software Foundation, Inc.
 1413 #
 1414 # This file is free software; the Free Software Foundation
 1415 # gives unlimited permission to copy and/or distribute it,
 1416 # with or without modifications, as long as this notice is preserved.
 1417 
 1418 # AM_SILENT_RULES([DEFAULT])
 1419 # --------------------------
 1420 # Enable less verbose build rules; with the default set to DEFAULT
 1421 # ("yes" being less verbose, "no" or empty being verbose).
 1422 AC_DEFUN([AM_SILENT_RULES],
 1423 [AC_ARG_ENABLE([silent-rules], [dnl
 1424 AS_HELP_STRING(
 1425   [--enable-silent-rules],
 1426   [less verbose build output (undo: "make V=1")])
 1427 AS_HELP_STRING(
 1428   [--disable-silent-rules],
 1429   [verbose build output (undo: "make V=0")])dnl
 1430 ])
 1431 case $enable_silent_rules in @%:@ (((
 1432   yes) AM_DEFAULT_VERBOSITY=0;;
 1433    no) AM_DEFAULT_VERBOSITY=1;;
 1434     *) AM_DEFAULT_VERBOSITY=m4_if([$1], [yes], [0], [1]);;
 1435 esac
 1436 dnl
 1437 dnl A few 'make' implementations (e.g., NonStop OS and NextStep)
 1438 dnl do not support nested variable expansions.
 1439 dnl See automake bug#9928 and bug#10237.
 1440 am_make=${MAKE-make}
 1441 AC_CACHE_CHECK([whether $am_make supports nested variables],
 1442    [am_cv_make_support_nested_variables],
 1443    [if AS_ECHO([['TRUE=$(BAR$(V))
 1444 BAR0=false
 1445 BAR1=true
 1446 V=1
 1447 am__doit:
 1448 	@$(TRUE)
 1449 .PHONY: am__doit']]) | $am_make -f - >/dev/null 2>&1; then
 1450   am_cv_make_support_nested_variables=yes
 1451 else
 1452   am_cv_make_support_nested_variables=no
 1453 fi])
 1454 if test $am_cv_make_support_nested_variables = yes; then
 1455   dnl Using '$V' instead of '$(V)' breaks IRIX make.
 1456   AM_V='$(V)'
 1457   AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
 1458 else
 1459   AM_V=$AM_DEFAULT_VERBOSITY
 1460   AM_DEFAULT_V=$AM_DEFAULT_VERBOSITY
 1461 fi
 1462 AC_SUBST([AM_V])dnl
 1463 AM_SUBST_NOTMAKE([AM_V])dnl
 1464 AC_SUBST([AM_DEFAULT_V])dnl
 1465 AM_SUBST_NOTMAKE([AM_DEFAULT_V])dnl
 1466 AC_SUBST([AM_DEFAULT_VERBOSITY])dnl
 1467 AM_BACKSLASH='\'
 1468 AC_SUBST([AM_BACKSLASH])dnl
 1469 _AM_SUBST_NOTMAKE([AM_BACKSLASH])dnl
 1470 ])
 1471 
 1472 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
 1473 #
 1474 # This file is free software; the Free Software Foundation
 1475 # gives unlimited permission to copy and/or distribute it,
 1476 # with or without modifications, as long as this notice is preserved.
 1477 
 1478 # AM_PROG_INSTALL_STRIP
 1479 # ---------------------
 1480 # One issue with vendor 'install' (even GNU) is that you can't
 1481 # specify the program used to strip binaries.  This is especially
 1482 # annoying in cross-compiling environments, where the build's strip
 1483 # is unlikely to handle the host's binaries.
 1484 # Fortunately install-sh will honor a STRIPPROG variable, so we
 1485 # always use install-sh in "make install-strip", and initialize
 1486 # STRIPPROG with the value of the STRIP variable (set by the user).
 1487 AC_DEFUN([AM_PROG_INSTALL_STRIP],
 1488 [AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
 1489 # Installed binaries are usually stripped using 'strip' when the user
 1490 # run "make install-strip".  However 'strip' might not be the right
 1491 # tool to use in cross-compilation environments, therefore Automake
 1492 # will honor the 'STRIP' environment variable to overrule this program.
 1493 dnl Don't test for $cross_compiling = yes, because it might be 'maybe'.
 1494 if test "$cross_compiling" != no; then
 1495   AC_CHECK_TOOL([STRIP], [strip], :)
 1496 fi
 1497 INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
 1498 AC_SUBST([INSTALL_STRIP_PROGRAM])])
 1499 
 1500 # Copyright (C) 2006-2018 Free Software Foundation, Inc.
 1501 #
 1502 # This file is free software; the Free Software Foundation
 1503 # gives unlimited permission to copy and/or distribute it,
 1504 # with or without modifications, as long as this notice is preserved.
 1505 
 1506 # _AM_SUBST_NOTMAKE(VARIABLE)
 1507 # ---------------------------
 1508 # Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in.
 1509 # This macro is traced by Automake.
 1510 AC_DEFUN([_AM_SUBST_NOTMAKE])
 1511 
 1512 # AM_SUBST_NOTMAKE(VARIABLE)
 1513 # --------------------------
 1514 # Public sister of _AM_SUBST_NOTMAKE.
 1515 AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
 1516 
 1517 # Check how to create a tarball.                            -*- Autoconf -*-
 1518 
 1519 # Copyright (C) 2004-2018 Free Software Foundation, Inc.
 1520 #
 1521 # This file is free software; the Free Software Foundation
 1522 # gives unlimited permission to copy and/or distribute it,
 1523 # with or without modifications, as long as this notice is preserved.
 1524 
 1525 # _AM_PROG_TAR(FORMAT)
 1526 # --------------------
 1527 # Check how to create a tarball in format FORMAT.
 1528 # FORMAT should be one of 'v7', 'ustar', or 'pax'.
 1529 #
 1530 # Substitute a variable $(am__tar) that is a command
 1531 # writing to stdout a FORMAT-tarball containing the directory
 1532 # $tardir.
 1533 #     tardir=directory && $(am__tar) > result.tar
 1534 #
 1535 # Substitute a variable $(am__untar) that extract such
 1536 # a tarball read from stdin.
 1537 #     $(am__untar) < result.tar
 1538 #
 1539 AC_DEFUN([_AM_PROG_TAR],
 1540 [# Always define AMTAR for backward compatibility.  Yes, it's still used
 1541 # in the wild :-(  We should find a proper way to deprecate it ...
 1542 AC_SUBST([AMTAR], ['$${TAR-tar}'])
 1543 
 1544 # We'll loop over all known methods to create a tar archive until one works.
 1545 _am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
 1546 
 1547 m4_if([$1], [v7],
 1548   [am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'],
 1549 
 1550   [m4_case([$1],
 1551     [ustar],
 1552      [# The POSIX 1988 'ustar' format is defined with fixed-size fields.
 1553       # There is notably a 21 bits limit for the UID and the GID.  In fact,
 1554       # the 'pax' utility can hang on bigger UID/GID (see automake bug#8343
 1555       # and bug#13588).
 1556       am_max_uid=2097151 # 2^21 - 1
 1557       am_max_gid=$am_max_uid
 1558       # The $UID and $GID variables are not portable, so we need to resort
 1559       # to the POSIX-mandated id(1) utility.  Errors in the 'id' calls
 1560       # below are definitely unexpected, so allow the users to see them
 1561       # (that is, avoid stderr redirection).
 1562       am_uid=`id -u || echo unknown`
 1563       am_gid=`id -g || echo unknown`
 1564       AC_MSG_CHECKING([whether UID '$am_uid' is supported by ustar format])
 1565       if test $am_uid -le $am_max_uid; then
 1566          AC_MSG_RESULT([yes])
 1567       else
 1568          AC_MSG_RESULT([no])
 1569          _am_tools=none
 1570       fi
 1571       AC_MSG_CHECKING([whether GID '$am_gid' is supported by ustar format])
 1572       if test $am_gid -le $am_max_gid; then
 1573          AC_MSG_RESULT([yes])
 1574       else
 1575         AC_MSG_RESULT([no])
 1576         _am_tools=none
 1577       fi],
 1578 
 1579   [pax],
 1580     [],
 1581 
 1582   [m4_fatal([Unknown tar format])])
 1583 
 1584   AC_MSG_CHECKING([how to create a $1 tar archive])
 1585 
 1586   # Go ahead even if we have the value already cached.  We do so because we
 1587   # need to set the values for the 'am__tar' and 'am__untar' variables.
 1588   _am_tools=${am_cv_prog_tar_$1-$_am_tools}
 1589 
 1590   for _am_tool in $_am_tools; do
 1591     case $_am_tool in
 1592     gnutar)
 1593       for _am_tar in tar gnutar gtar; do
 1594         AM_RUN_LOG([$_am_tar --version]) && break
 1595       done
 1596       am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"'
 1597       am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"'
 1598       am__untar="$_am_tar -xf -"
 1599       ;;
 1600     plaintar)
 1601       # Must skip GNU tar: if it does not support --format= it doesn't create
 1602       # ustar tarball either.
 1603       (tar --version) >/dev/null 2>&1 && continue
 1604       am__tar='tar chf - "$$tardir"'
 1605       am__tar_='tar chf - "$tardir"'
 1606       am__untar='tar xf -'
 1607       ;;
 1608     pax)
 1609       am__tar='pax -L -x $1 -w "$$tardir"'
 1610       am__tar_='pax -L -x $1 -w "$tardir"'
 1611       am__untar='pax -r'
 1612       ;;
 1613     cpio)
 1614       am__tar='find "$$tardir" -print | cpio -o -H $1 -L'
 1615       am__tar_='find "$tardir" -print | cpio -o -H $1 -L'
 1616       am__untar='cpio -i -H $1 -d'
 1617       ;;
 1618     none)
 1619       am__tar=false
 1620       am__tar_=false
 1621       am__untar=false
 1622       ;;
 1623     esac
 1624 
 1625     # If the value was cached, stop now.  We just wanted to have am__tar
 1626     # and am__untar set.
 1627     test -n "${am_cv_prog_tar_$1}" && break
 1628 
 1629     # tar/untar a dummy directory, and stop if the command works.
 1630     rm -rf conftest.dir
 1631     mkdir conftest.dir
 1632     echo GrepMe > conftest.dir/file
 1633     AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar])
 1634     rm -rf conftest.dir
 1635     if test -s conftest.tar; then
 1636       AM_RUN_LOG([$am__untar <conftest.tar])
 1637       AM_RUN_LOG([cat conftest.dir/file])
 1638       grep GrepMe conftest.dir/file >/dev/null 2>&1 && break
 1639     fi
 1640   done
 1641   rm -rf conftest.dir
 1642 
 1643   AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])
 1644   AC_MSG_RESULT([$am_cv_prog_tar_$1])])
 1645 
 1646 AC_SUBST([am__tar])
 1647 AC_SUBST([am__untar])
 1648 ]) # _AM_PROG_TAR
 1649 
 1650 m4_include([m4/libtool.m4])
 1651 m4_include([m4/ltoptions.m4])
 1652 m4_include([m4/ltsugar.m4])
 1653 m4_include([m4/ltversion.m4])
 1654 m4_include([m4/lt~obsolete.m4])