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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],
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   22 
   23 # Copyright (C) 2002-2018 Free Software Foundation, Inc.
   24 #
   25 # This file is free software; the Free Software Foundation
   26 # gives unlimited permission to copy and/or distribute it,
   27 # with or without modifications, as long as this notice is preserved.
   28 
   29 # AM_AUTOMAKE_VERSION(VERSION)
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   59 # Figure out how to run the assembler.                      -*- Autoconf -*-
   60 
   61 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
   62 #
   63 # This file is free software; the Free Software Foundation
   64 # gives unlimited permission to copy and/or distribute it,
   65 # with or without modifications, as long as this notice is preserved.
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   67 # AM_PROG_AS
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   78 
   79 # AM_AUX_DIR_EXPAND                                         -*- Autoconf -*-
   80 
   81 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
   82 #
   83 # This file is free software; the Free Software Foundation
   84 # gives unlimited permission to copy and/or distribute it,
   85 # with or without modifications, as long as this notice is preserved.
   86 
   87 # For projects using AC_CONFIG_AUX_DIR([foo]), Autoconf sets
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   97 # relative path needs to be adjusted first.
   98 #
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  100 #    fails when called from a subdirectory if $ac_aux_dir is relative
  101 # $top_srcdir/$ac_aux_dir/missing
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  103 #    fails when called from a subdirectory in a VPATH build with
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  130 
  131 # AM_CONDITIONAL                                            -*- Autoconf -*-
  132 
  133 # Copyright (C) 1997-2018 Free Software Foundation, Inc.
  134 #
  135 # This file is free software; the Free Software Foundation
  136 # gives unlimited permission to copy and/or distribute it,
  137 # with or without modifications, as long as this notice is preserved.
  138 
  139 # AM_CONDITIONAL(NAME, SHELL-CONDITION)
  140 # -------------------------------------
  141 # Define a conditional.
  142 AC_DEFUN([AM_CONDITIONAL],
  143 [AC_PREREQ([2.52])dnl
  144  m4_if([$1], [TRUE],  [AC_FATAL([$0: invalid condition: $1])],
  145        [$1], [FALSE], [AC_FATAL([$0: invalid condition: $1])])dnl
  146 AC_SUBST([$1_TRUE])dnl
  147 AC_SUBST([$1_FALSE])dnl
  148 _AM_SUBST_NOTMAKE([$1_TRUE])dnl
  149 _AM_SUBST_NOTMAKE([$1_FALSE])dnl
  150 m4_define([_AM_COND_VALUE_$1], [$2])dnl
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  160   AC_MSG_ERROR([[conditional "$1" was never defined.
  161 Usually this means the macro was only invoked conditionally.]])
  162 fi])])
  163 
  164 # Copyright (C) 1999-2018 Free Software Foundation, Inc.
  165 #
  166 # This file is free software; the Free Software Foundation
  167 # gives unlimited permission to copy and/or distribute it,
  168 # with or without modifications, as long as this notice is preserved.
  169 
  170 
  171 # There are a few dirty hacks below to avoid letting 'AC_PROG_CC' be
  172 # written in clear, in which case automake, when reading aclocal.m4,
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  175 # CC etc. in the Makefile, will ask for an AC_PROG_CC use...
  176 
  177 
  178 # _AM_DEPENDENCIES(NAME)
  179 # ----------------------
  180 # See how the compiler implements dependency checking.
  181 # NAME is "CC", "CXX", "OBJC", "OBJCXX", "UPC", or "GJC".
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  183 #
  184 # We don't AC_REQUIRE the corresponding AC_PROG_CC since the latter was
  185 # modified to invoke _AM_DEPENDENCIES(CC); we would have a circular
  186 # dependency, and given that the user is not expected to run this macro,
  187 # just rely on AC_PROG_CC.
  188 AC_DEFUN([_AM_DEPENDENCIES],
  189 [AC_REQUIRE([AM_SET_DEPDIR])dnl
  190 AC_REQUIRE([AM_OUTPUT_DEPENDENCY_COMMANDS])dnl
  191 AC_REQUIRE([AM_MAKE_INCLUDE])dnl
  192 AC_REQUIRE([AM_DEP_TRACK])dnl
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  194 m4_if([$1], [CC],   [depcc="$CC"   am_compiler_list=],
  195       [$1], [CXX],  [depcc="$CXX"  am_compiler_list=],
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  197       [$1], [OBJCXX], [depcc="$OBJCXX" am_compiler_list='gcc3 gcc'],
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  199       [$1], [GCJ],  [depcc="$GCJ"  am_compiler_list='gcc3 gcc'],
  200                     [depcc="$$1"   am_compiler_list=])
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  202 AC_CACHE_CHECK([dependency style of $depcc],
  203                [am_cv_$1_dependencies_compiler_type],
  204 [if test -z "$AMDEP_TRUE" && test -f "$am_depcomp"; then
  205   # We make a subdir and do the tests there.  Otherwise we can end up
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  208   # making a dummy file named 'D' -- because '-MD' means "put the output
  209   # in D".
  210   rm -rf conftest.dir
  211   mkdir conftest.dir
  212   # Copy depcomp to subdir because otherwise we won't find it if we're
  213   # using a relative directory.
  214   cp "$am_depcomp" conftest.dir
  215   cd conftest.dir
  216   # We will build objects and dependencies in a subdirectory because
  217   # it helps to detect inapplicable dependency modes.  For instance
  218   # both Tru64's cc and ICC support -MD to output dependencies as a
  219   # side effect of compilation, but ICC will put the dependencies in
  220   # the current directory while Tru64 will put them in the object
  221   # directory.
  222   mkdir sub
  223 
  224   am_cv_$1_dependencies_compiler_type=none
  225   if test "$am_compiler_list" = ""; then
  226      am_compiler_list=`sed -n ['s/^#*\([a-zA-Z0-9]*\))$/\1/p'] < ./depcomp`
  227   fi
  228   am__universal=false
  229   m4_case([$1], [CC],
  230     [case " $depcc " in #(
  231      *\ -arch\ *\ -arch\ *) am__universal=true ;;
  232      esac],
  233     [CXX],
  234     [case " $depcc " in #(
  235      *\ -arch\ *\ -arch\ *) am__universal=true ;;
  236      esac])
  237 
  238   for depmode in $am_compiler_list; do
  239     # Setup a source with many dependencies, because some compilers
  240     # like to wrap large dependency lists on column 80 (with \), and
  241     # we should not choose a depcomp mode which is confused by this.
  242     #
  243     # We need to recreate these files for each test, as the compiler may
  244     # overwrite some of them when testing with obscure command lines.
  245     # This happens at least with the AIX C compiler.
  246     : > sub/conftest.c
  247     for i in 1 2 3 4 5 6; do
  248       echo '#include "conftst'$i'.h"' >> sub/conftest.c
  249       # Using ": > sub/conftst$i.h" creates only sub/conftst1.h with
  250       # Solaris 10 /bin/sh.
  251       echo '/* dummy */' > sub/conftst$i.h
  252     done
  253     echo "${am__include} ${am__quote}sub/conftest.Po${am__quote}" > confmf
  254 
  255     # We check with '-c' and '-o' for the sake of the "dashmstdout"
  256     # mode.  It turns out that the SunPro C++ compiler does not properly
  257     # handle '-M -o', and we need to detect this.  Also, some Intel
  258     # versions had trouble with output in subdirs.
  259     am__obj=sub/conftest.${OBJEXT-o}
  260     am__minus_obj="-o $am__obj"
  261     case $depmode in
  262     gcc)
  263       # This depmode causes a compiler race in universal mode.
  264       test "$am__universal" = false || continue
  265       ;;
  266     nosideeffect)
  267       # After this tag, mechanisms are not by side-effect, so they'll
  268       # only be used when explicitly requested.
  269       if test "x$enable_dependency_tracking" = xyes; then
  270 	continue
  271       else
  272 	break
  273       fi
  274       ;;
  275     msvc7 | msvc7msys | msvisualcpp | msvcmsys)
  276       # This compiler won't grok '-c -o', but also, the minuso test has
  277       # not run yet.  These depmodes are late enough in the game, and
  278       # so weak that their functioning should not be impacted.
  279       am__obj=conftest.${OBJEXT-o}
  280       am__minus_obj=
  281       ;;
  282     none) break ;;
  283     esac
  284     if depmode=$depmode \
  285        source=sub/conftest.c object=$am__obj \
  286        depfile=sub/conftest.Po tmpdepfile=sub/conftest.TPo \
  287        $SHELL ./depcomp $depcc -c $am__minus_obj sub/conftest.c \
  288          >/dev/null 2>conftest.err &&
  289        grep sub/conftst1.h sub/conftest.Po > /dev/null 2>&1 &&
  290        grep sub/conftst6.h sub/conftest.Po > /dev/null 2>&1 &&
  291        grep $am__obj sub/conftest.Po > /dev/null 2>&1 &&
  292        ${MAKE-make} -s -f confmf > /dev/null 2>&1; then
  293       # icc doesn't choke on unknown options, it will just issue warnings
  294       # or remarks (even with -Werror).  So we grep stderr for any message
  295       # that says an option was ignored or not supported.
  296       # When given -MP, icc 7.0 and 7.1 complain thusly:
  297       #   icc: Command line warning: ignoring option '-M'; no argument required
  298       # The diagnosis changed in icc 8.0:
  299       #   icc: Command line remark: option '-MP' not supported
  300       if (grep 'ignoring option' conftest.err ||
  301           grep 'not supported' conftest.err) >/dev/null 2>&1; then :; else
  302         am_cv_$1_dependencies_compiler_type=$depmode
  303         break
  304       fi
  305     fi
  306   done
  307 
  308   cd ..
  309   rm -rf conftest.dir
  310 else
  311   am_cv_$1_dependencies_compiler_type=none
  312 fi
  313 ])
  314 AC_SUBST([$1DEPMODE], [depmode=$am_cv_$1_dependencies_compiler_type])
  315 AM_CONDITIONAL([am__fastdep$1], [
  316   test "x$enable_dependency_tracking" != xno \
  317   && test "$am_cv_$1_dependencies_compiler_type" = gcc3])
  318 ])
  319 
  320 
  321 # AM_SET_DEPDIR
  322 # -------------
  323 # Choose a directory name for dependency files.
  324 # This macro is AC_REQUIREd in _AM_DEPENDENCIES.
  325 AC_DEFUN([AM_SET_DEPDIR],
  326 [AC_REQUIRE([AM_SET_LEADING_DOT])dnl
  327 AC_SUBST([DEPDIR], ["${am__leading_dot}deps"])dnl
  328 ])
  329 
  330 
  331 # AM_DEP_TRACK
  332 # ------------
  333 AC_DEFUN([AM_DEP_TRACK],
  334 [AC_ARG_ENABLE([dependency-tracking], [dnl
  335 AS_HELP_STRING(
  336   [--enable-dependency-tracking],
  337   [do not reject slow dependency extractors])
  338 AS_HELP_STRING(
  339   [--disable-dependency-tracking],
  340   [speeds up one-time build])])
  341 if test "x$enable_dependency_tracking" != xno; then
  342   am_depcomp="$ac_aux_dir/depcomp"
  343   AMDEPBACKSLASH='\'
  344   am__nodep='_no'
  345 fi
  346 AM_CONDITIONAL([AMDEP], [test "x$enable_dependency_tracking" != xno])
  347 AC_SUBST([AMDEPBACKSLASH])dnl
  348 _AM_SUBST_NOTMAKE([AMDEPBACKSLASH])dnl
  349 AC_SUBST([am__nodep])dnl
  350 _AM_SUBST_NOTMAKE([am__nodep])dnl
  351 ])
  352 
  353 # Generate code to set up dependency tracking.              -*- Autoconf -*-
  354 
  355 # Copyright (C) 1999-2018 Free Software Foundation, Inc.
  356 #
  357 # This file is free software; the Free Software Foundation
  358 # gives unlimited permission to copy and/or distribute it,
  359 # with or without modifications, as long as this notice is preserved.
  360 
  361 # _AM_OUTPUT_DEPENDENCY_COMMANDS
  362 # ------------------------------
  363 AC_DEFUN([_AM_OUTPUT_DEPENDENCY_COMMANDS],
  364 [{
  365   # Older Autoconf quotes --file arguments for eval, but not when files
  366   # are listed without --file.  Let's play safe and only enable the eval
  367   # if we detect the quoting.
  368   # TODO: see whether this extra hack can be removed once we start
  369   # requiring Autoconf 2.70 or later.
  370   AS_CASE([$CONFIG_FILES],
  371           [*\'*], [eval set x "$CONFIG_FILES"],
  372           [*], [set x $CONFIG_FILES])
  373   shift
  374   # Used to flag and report bootstrapping failures.
  375   am_rc=0
  376   for am_mf
  377   do
  378     # Strip MF so we end up with the name of the file.
  379     am_mf=`AS_ECHO(["$am_mf"]) | sed -e 's/:.*$//'`
  380     # Check whether this is an Automake generated Makefile which includes
  381     # dependency-tracking related rules and includes.
  382     # Grep'ing the whole file directly is not great: AIX grep has a line
  383     # limit of 2048, but all sed's we know have understand at least 4000.
  384     sed -n 's,^am--depfiles:.*,X,p' "$am_mf" | grep X >/dev/null 2>&1 \
  385       || continue
  386     am_dirpart=`AS_DIRNAME(["$am_mf"])`
  387     am_filepart=`AS_BASENAME(["$am_mf"])`
  388     AM_RUN_LOG([cd "$am_dirpart" \
  389       && sed -e '/# am--include-marker/d' "$am_filepart" \
  390         | $MAKE -f - am--depfiles]) || am_rc=$?
  391   done
  392   if test $am_rc -ne 0; then
  393     AC_MSG_FAILURE([Something went wrong bootstrapping makefile fragments
  394     for automatic dependency tracking.  Try re-running configure with the
  395     '--disable-dependency-tracking' option to at least be able to build
  396     the package (albeit without support for automatic dependency tracking).])
  397   fi
  398   AS_UNSET([am_dirpart])
  399   AS_UNSET([am_filepart])
  400   AS_UNSET([am_mf])
  401   AS_UNSET([am_rc])
  402   rm -f conftest-deps.mk
  403 }
  404 ])# _AM_OUTPUT_DEPENDENCY_COMMANDS
  405 
  406 
  407 # AM_OUTPUT_DEPENDENCY_COMMANDS
  408 # -----------------------------
  409 # This macro should only be invoked once -- use via AC_REQUIRE.
  410 #
  411 # This code is only required when automatic dependency tracking is enabled.
  412 # This creates each '.Po' and '.Plo' makefile fragment that we'll need in
  413 # order to bootstrap the dependency handling code.
  414 AC_DEFUN([AM_OUTPUT_DEPENDENCY_COMMANDS],
  415 [AC_CONFIG_COMMANDS([depfiles],
  416      [test x"$AMDEP_TRUE" != x"" || _AM_OUTPUT_DEPENDENCY_COMMANDS],
  417      [AMDEP_TRUE="$AMDEP_TRUE" MAKE="${MAKE-make}"])])
  418 
  419 # Do all the work for Automake.                             -*- Autoconf -*-
  420 
  421 # Copyright (C) 1996-2018 Free Software Foundation, Inc.
  422 #
  423 # This file is free software; the Free Software Foundation
  424 # gives unlimited permission to copy and/or distribute it,
  425 # with or without modifications, as long as this notice is preserved.
  426 
  427 # This macro actually does too much.  Some checks are only needed if
  428 # your package does certain things.  But this isn't really a big deal.
  429 
  430 dnl Redefine AC_PROG_CC to automatically invoke _AM_PROG_CC_C_O.
  431 m4_define([AC_PROG_CC],
  432 m4_defn([AC_PROG_CC])
  433 [_AM_PROG_CC_C_O
  434 ])
  435 
  436 # AM_INIT_AUTOMAKE(PACKAGE, VERSION, [NO-DEFINE])
  437 # AM_INIT_AUTOMAKE([OPTIONS])
  438 # -----------------------------------------------
  439 # The call with PACKAGE and VERSION arguments is the old style
  440 # call (pre autoconf-2.50), which is being phased out.  PACKAGE
  441 # and VERSION should now be passed to AC_INIT and removed from
  442 # the call to AM_INIT_AUTOMAKE.
  443 # We support both call styles for the transition.  After
  444 # the next Automake release, Autoconf can make the AC_INIT
  445 # arguments mandatory, and then we can depend on a new Autoconf
  446 # release and drop the old call support.
  447 AC_DEFUN([AM_INIT_AUTOMAKE],
  448 [AC_PREREQ([2.65])dnl
  449 dnl Autoconf wants to disallow AM_ names.  We explicitly allow
  450 dnl the ones we care about.
  451 m4_pattern_allow([^AM_[A-Z]+FLAGS$])dnl
  452 AC_REQUIRE([AM_SET_CURRENT_AUTOMAKE_VERSION])dnl
  453 AC_REQUIRE([AC_PROG_INSTALL])dnl
  454 if test "`cd $srcdir && pwd`" != "`pwd`"; then
  455   # Use -I$(srcdir) only when $(srcdir) != ., so that make's output
  456   # is not polluted with repeated "-I."
  457   AC_SUBST([am__isrc], [' -I$(srcdir)'])_AM_SUBST_NOTMAKE([am__isrc])dnl
  458   # test to see if srcdir already configured
  459   if test -f $srcdir/config.status; then
  460     AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
  461   fi
  462 fi
  463 
  464 # test whether we have cygpath
  465 if test -z "$CYGPATH_W"; then
  466   if (cygpath --version) >/dev/null 2>/dev/null; then
  467     CYGPATH_W='cygpath -w'
  468   else
  469     CYGPATH_W=echo
  470   fi
  471 fi
  472 AC_SUBST([CYGPATH_W])
  473 
  474 # Define the identity of the package.
  475 dnl Distinguish between old-style and new-style calls.
  476 m4_ifval([$2],
  477 [AC_DIAGNOSE([obsolete],
  478              [$0: two- and three-arguments forms are deprecated.])
  479 m4_ifval([$3], [_AM_SET_OPTION([no-define])])dnl
  480  AC_SUBST([PACKAGE], [$1])dnl
  481  AC_SUBST([VERSION], [$2])],
  482 [_AM_SET_OPTIONS([$1])dnl
  483 dnl Diagnose old-style AC_INIT with new-style AM_AUTOMAKE_INIT.
  484 m4_if(
  485   m4_ifdef([AC_PACKAGE_NAME], [ok]):m4_ifdef([AC_PACKAGE_VERSION], [ok]),
  486   [ok:ok],,
  487   [m4_fatal([AC_INIT should be called with package and version arguments])])dnl
  488  AC_SUBST([PACKAGE], ['AC_PACKAGE_TARNAME'])dnl
  489  AC_SUBST([VERSION], ['AC_PACKAGE_VERSION'])])dnl
  490 
  491 _AM_IF_OPTION([no-define],,
  492 [AC_DEFINE_UNQUOTED([PACKAGE], ["$PACKAGE"], [Name of package])
  493  AC_DEFINE_UNQUOTED([VERSION], ["$VERSION"], [Version number of package])])dnl
  494 
  495 # Some tools Automake needs.
  496 AC_REQUIRE([AM_SANITY_CHECK])dnl
  497 AC_REQUIRE([AC_ARG_PROGRAM])dnl
  498 AM_MISSING_PROG([ACLOCAL], [aclocal-${am__api_version}])
  499 AM_MISSING_PROG([AUTOCONF], [autoconf])
  500 AM_MISSING_PROG([AUTOMAKE], [automake-${am__api_version}])
  501 AM_MISSING_PROG([AUTOHEADER], [autoheader])
  502 AM_MISSING_PROG([MAKEINFO], [makeinfo])
  503 AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
  504 AC_REQUIRE([AM_PROG_INSTALL_STRIP])dnl
  505 AC_REQUIRE([AC_PROG_MKDIR_P])dnl
  506 # For better backward compatibility.  To be removed once Automake 1.9.x
  507 # dies out for good.  For more background, see:
  508 # <https://lists.gnu.org/archive/html/automake/2012-07/msg00001.html>
  509 # <https://lists.gnu.org/archive/html/automake/2012-07/msg00014.html>
  510 AC_SUBST([mkdir_p], ['$(MKDIR_P)'])
  511 # We need awk for the "check" target (and possibly the TAP driver).  The
  512 # system "awk" is bad on some platforms.
  513 AC_REQUIRE([AC_PROG_AWK])dnl
  514 AC_REQUIRE([AC_PROG_MAKE_SET])dnl
  515 AC_REQUIRE([AM_SET_LEADING_DOT])dnl
  516 _AM_IF_OPTION([tar-ustar], [_AM_PROG_TAR([ustar])],
  517 	      [_AM_IF_OPTION([tar-pax], [_AM_PROG_TAR([pax])],
  518 			     [_AM_PROG_TAR([v7])])])
  519 _AM_IF_OPTION([no-dependencies],,
  520 [AC_PROVIDE_IFELSE([AC_PROG_CC],
  521 		  [_AM_DEPENDENCIES([CC])],
  522 		  [m4_define([AC_PROG_CC],
  523 			     m4_defn([AC_PROG_CC])[_AM_DEPENDENCIES([CC])])])dnl
  524 AC_PROVIDE_IFELSE([AC_PROG_CXX],
  525 		  [_AM_DEPENDENCIES([CXX])],
  526 		  [m4_define([AC_PROG_CXX],
  527 			     m4_defn([AC_PROG_CXX])[_AM_DEPENDENCIES([CXX])])])dnl
  528 AC_PROVIDE_IFELSE([AC_PROG_OBJC],
  529 		  [_AM_DEPENDENCIES([OBJC])],
  530 		  [m4_define([AC_PROG_OBJC],
  531 			     m4_defn([AC_PROG_OBJC])[_AM_DEPENDENCIES([OBJC])])])dnl
  532 AC_PROVIDE_IFELSE([AC_PROG_OBJCXX],
  533 		  [_AM_DEPENDENCIES([OBJCXX])],
  534 		  [m4_define([AC_PROG_OBJCXX],
  535 			     m4_defn([AC_PROG_OBJCXX])[_AM_DEPENDENCIES([OBJCXX])])])dnl
  536 ])
  537 AC_REQUIRE([AM_SILENT_RULES])dnl
  538 dnl The testsuite driver may need to know about EXEEXT, so add the
  539 dnl 'am__EXEEXT' conditional if _AM_COMPILER_EXEEXT was seen.  This
  540 dnl macro is hooked onto _AC_COMPILER_EXEEXT early, see below.
  541 AC_CONFIG_COMMANDS_PRE(dnl
  542 [m4_provide_if([_AM_COMPILER_EXEEXT],
  543   [AM_CONDITIONAL([am__EXEEXT], [test -n "$EXEEXT"])])])dnl
  544 
  545 # POSIX will say in a future version that running "rm -f" with no argument
  546 # is OK; and we want to be able to make that assumption in our Makefile
  547 # recipes.  So use an aggressive probe to check that the usage we want is
  548 # actually supported "in the wild" to an acceptable degree.
  549 # See automake bug#10828.
  550 # To make any issue more visible, cause the running configure to be aborted
  551 # by default if the 'rm' program in use doesn't match our expectations; the
  552 # user can still override this though.
  553 if rm -f && rm -fr && rm -rf; then : OK; else
  554   cat >&2 <<'END'
  555 Oops!
  556 
  557 Your 'rm' program seems unable to run without file operands specified
  558 on the command line, even when the '-f' option is present.  This is contrary
  559 to the behaviour of most rm programs out there, and not conforming with
  560 the upcoming POSIX standard: <http://austingroupbugs.net/view.php?id=542>
  561 
  562 Please tell bug-automake@gnu.org about your system, including the value
  563 of your $PATH and any error possibly output before this message.  This
  564 can help us improve future automake versions.
  565 
  566 END
  567   if test x"$ACCEPT_INFERIOR_RM_PROGRAM" = x"yes"; then
  568     echo 'Configuration will proceed anyway, since you have set the' >&2
  569     echo 'ACCEPT_INFERIOR_RM_PROGRAM variable to "yes"' >&2
  570     echo >&2
  571   else
  572     cat >&2 <<'END'
  573 Aborting the configuration process, to ensure you take notice of the issue.
  574 
  575 You can download and install GNU coreutils to get an 'rm' implementation
  576 that behaves properly: <https://www.gnu.org/software/coreutils/>.
  577 
  578 If you want to complete the configuration process using your problematic
  579 'rm' anyway, export the environment variable ACCEPT_INFERIOR_RM_PROGRAM
  580 to "yes", and re-run configure.
  581 
  582 END
  583     AC_MSG_ERROR([Your 'rm' program is bad, sorry.])
  584   fi
  585 fi
  586 dnl The trailing newline in this macro's definition is deliberate, for
  587 dnl backward compatibility and to allow trailing 'dnl'-style comments
  588 dnl after the AM_INIT_AUTOMAKE invocation. See automake bug#16841.
  589 ])
  590 
  591 dnl Hook into '_AC_COMPILER_EXEEXT' early to learn its expansion.  Do not
  592 dnl add the conditional right here, as _AC_COMPILER_EXEEXT may be further
  593 dnl mangled by Autoconf and run in a shell conditional statement.
  594 m4_define([_AC_COMPILER_EXEEXT],
  595 m4_defn([_AC_COMPILER_EXEEXT])[m4_provide([_AM_COMPILER_EXEEXT])])
  596 
  597 # When config.status generates a header, we must update the stamp-h file.
  598 # This file resides in the same directory as the config header
  599 # that is generated.  The stamp files are numbered to have different names.
  600 
  601 # Autoconf calls _AC_AM_CONFIG_HEADER_HOOK (when defined) in the
  602 # loop where config.status creates the headers, so we can generate
  603 # our stamp files there.
  604 AC_DEFUN([_AC_AM_CONFIG_HEADER_HOOK],
  605 [# Compute $1's index in $config_headers.
  606 _am_arg=$1
  607 _am_stamp_count=1
  608 for _am_header in $config_headers :; do
  609   case $_am_header in
  610     $_am_arg | $_am_arg:* )
  611       break ;;
  612     * )
  613       _am_stamp_count=`expr $_am_stamp_count + 1` ;;
  614   esac
  615 done
  616 echo "timestamp for $_am_arg" >`AS_DIRNAME(["$_am_arg"])`/stamp-h[]$_am_stamp_count])
  617 
  618 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
  619 #
  620 # This file is free software; the Free Software Foundation
  621 # gives unlimited permission to copy and/or distribute it,
  622 # with or without modifications, as long as this notice is preserved.
  623 
  624 # AM_PROG_INSTALL_SH
  625 # ------------------
  626 # Define $install_sh.
  627 AC_DEFUN([AM_PROG_INSTALL_SH],
  628 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
  629 if test x"${install_sh+set}" != xset; then
  630   case $am_aux_dir in
  631   *\ * | *\	*)
  632     install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
  633   *)
  634     install_sh="\${SHELL} $am_aux_dir/install-sh"
  635   esac
  636 fi
  637 AC_SUBST([install_sh])])
  638 
  639 # Copyright (C) 2003-2018 Free Software Foundation, Inc.
  640 #
  641 # This file is free software; the Free Software Foundation
  642 # gives unlimited permission to copy and/or distribute it,
  643 # with or without modifications, as long as this notice is preserved.
  644 
  645 # Check whether the underlying file-system supports filenames
  646 # with a leading dot.  For instance MS-DOS doesn't.
  647 AC_DEFUN([AM_SET_LEADING_DOT],
  648 [rm -rf .tst 2>/dev/null
  649 mkdir .tst 2>/dev/null
  650 if test -d .tst; then
  651   am__leading_dot=.
  652 else
  653   am__leading_dot=_
  654 fi
  655 rmdir .tst 2>/dev/null
  656 AC_SUBST([am__leading_dot])])
  657 
  658 # Check to see how 'make' treats includes.	            -*- Autoconf -*-
  659 
  660 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
  661 #
  662 # This file is free software; the Free Software Foundation
  663 # gives unlimited permission to copy and/or distribute it,
  664 # with or without modifications, as long as this notice is preserved.
  665 
  666 # AM_MAKE_INCLUDE()
  667 # -----------------
  668 # Check whether make has an 'include' directive that can support all
  669 # the idioms we need for our automatic dependency tracking code.
  670 AC_DEFUN([AM_MAKE_INCLUDE],
  671 [AC_MSG_CHECKING([whether ${MAKE-make} supports the include directive])
  672 cat > confinc.mk << 'END'
  673 am__doit:
  674 	@echo this is the am__doit target >confinc.out
  675 .PHONY: am__doit
  676 END
  677 am__include="#"
  678 am__quote=
  679 # BSD make does it like this.
  680 echo '.include "confinc.mk" # ignored' > confmf.BSD
  681 # Other make implementations (GNU, Solaris 10, AIX) do it like this.
  682 echo 'include confinc.mk # ignored' > confmf.GNU
  683 _am_result=no
  684 for s in GNU BSD; do
  685   AM_RUN_LOG([${MAKE-make} -f confmf.$s && cat confinc.out])
  686   AS_CASE([$?:`cat confinc.out 2>/dev/null`],
  687       ['0:this is the am__doit target'],
  688       [AS_CASE([$s],
  689           [BSD], [am__include='.include' am__quote='"'],
  690           [am__include='include' am__quote=''])])
  691   if test "$am__include" != "#"; then
  692     _am_result="yes ($s style)"
  693     break
  694   fi
  695 done
  696 rm -f confinc.* confmf.*
  697 AC_MSG_RESULT([${_am_result}])
  698 AC_SUBST([am__include])])
  699 AC_SUBST([am__quote])])
  700 
  701 # Fake the existence of programs that GNU maintainers use.  -*- Autoconf -*-
  702 
  703 # Copyright (C) 1997-2018 Free Software Foundation, Inc.
  704 #
  705 # This file is free software; the Free Software Foundation
  706 # gives unlimited permission to copy and/or distribute it,
  707 # with or without modifications, as long as this notice is preserved.
  708 
  709 # AM_MISSING_PROG(NAME, PROGRAM)
  710 # ------------------------------
  711 AC_DEFUN([AM_MISSING_PROG],
  712 [AC_REQUIRE([AM_MISSING_HAS_RUN])
  713 $1=${$1-"${am_missing_run}$2"}
  714 AC_SUBST($1)])
  715 
  716 # AM_MISSING_HAS_RUN
  717 # ------------------
  718 # Define MISSING if not defined so far and test if it is modern enough.
  719 # If it is, set am_missing_run to use it, otherwise, to nothing.
  720 AC_DEFUN([AM_MISSING_HAS_RUN],
  721 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
  722 AC_REQUIRE_AUX_FILE([missing])dnl
  723 if test x"${MISSING+set}" != xset; then
  724   case $am_aux_dir in
  725   *\ * | *\	*)
  726     MISSING="\${SHELL} \"$am_aux_dir/missing\"" ;;
  727   *)
  728     MISSING="\${SHELL} $am_aux_dir/missing" ;;
  729   esac
  730 fi
  731 # Use eval to expand $SHELL
  732 if eval "$MISSING --is-lightweight"; then
  733   am_missing_run="$MISSING "
  734 else
  735   am_missing_run=
  736   AC_MSG_WARN(['missing' script is too old or missing])
  737 fi
  738 ])
  739 
  740 # Helper functions for option handling.                     -*- Autoconf -*-
  741 
  742 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
  743 #
  744 # This file is free software; the Free Software Foundation
  745 # gives unlimited permission to copy and/or distribute it,
  746 # with or without modifications, as long as this notice is preserved.
  747 
  748 # _AM_MANGLE_OPTION(NAME)
  749 # -----------------------
  750 AC_DEFUN([_AM_MANGLE_OPTION],
  751 [[_AM_OPTION_]m4_bpatsubst($1, [[^a-zA-Z0-9_]], [_])])
  752 
  753 # _AM_SET_OPTION(NAME)
  754 # --------------------
  755 # Set option NAME.  Presently that only means defining a flag for this option.
  756 AC_DEFUN([_AM_SET_OPTION],
  757 [m4_define(_AM_MANGLE_OPTION([$1]), [1])])
  758 
  759 # _AM_SET_OPTIONS(OPTIONS)
  760 # ------------------------
  761 # OPTIONS is a space-separated list of Automake options.
  762 AC_DEFUN([_AM_SET_OPTIONS],
  763 [m4_foreach_w([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])])
  764 
  765 # _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET])
  766 # -------------------------------------------
  767 # Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
  768 AC_DEFUN([_AM_IF_OPTION],
  769 [m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])
  770 
  771 # Copyright (C) 1999-2018 Free Software Foundation, Inc.
  772 #
  773 # This file is free software; the Free Software Foundation
  774 # gives unlimited permission to copy and/or distribute it,
  775 # with or without modifications, as long as this notice is preserved.
  776 
  777 # _AM_PROG_CC_C_O
  778 # ---------------
  779 # Like AC_PROG_CC_C_O, but changed for automake.  We rewrite AC_PROG_CC
  780 # to automatically call this.
  781 AC_DEFUN([_AM_PROG_CC_C_O],
  782 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
  783 AC_REQUIRE_AUX_FILE([compile])dnl
  784 AC_LANG_PUSH([C])dnl
  785 AC_CACHE_CHECK(
  786   [whether $CC understands -c and -o together],
  787   [am_cv_prog_cc_c_o],
  788   [AC_LANG_CONFTEST([AC_LANG_PROGRAM([])])
  789   # Make sure it works both with $CC and with simple cc.
  790   # Following AC_PROG_CC_C_O, we do the test twice because some
  791   # compilers refuse to overwrite an existing .o file with -o,
  792   # though they will create one.
  793   am_cv_prog_cc_c_o=yes
  794   for am_i in 1 2; do
  795     if AM_RUN_LOG([$CC -c conftest.$ac_ext -o conftest2.$ac_objext]) \
  796          && test -f conftest2.$ac_objext; then
  797       : OK
  798     else
  799       am_cv_prog_cc_c_o=no
  800       break
  801     fi
  802   done
  803   rm -f core conftest*
  804   unset am_i])
  805 if test "$am_cv_prog_cc_c_o" != yes; then
  806    # Losing compiler, so override with the script.
  807    # FIXME: It is wrong to rewrite CC.
  808    # But if we don't then we get into trouble of one sort or another.
  809    # A longer-term fix would be to have automake use am__CC in this case,
  810    # and then we could set am__CC="\$(top_srcdir)/compile \$(CC)"
  811    CC="$am_aux_dir/compile $CC"
  812 fi
  813 AC_LANG_POP([C])])
  814 
  815 # For backward compatibility.
  816 AC_DEFUN_ONCE([AM_PROG_CC_C_O], [AC_REQUIRE([AC_PROG_CC])])
  817 
  818 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
  819 #
  820 # This file is free software; the Free Software Foundation
  821 # gives unlimited permission to copy and/or distribute it,
  822 # with or without modifications, as long as this notice is preserved.
  823 
  824 # AM_RUN_LOG(COMMAND)
  825 # -------------------
  826 # Run COMMAND, save the exit status in ac_status, and log it.
  827 # (This has been adapted from Autoconf's _AC_RUN_LOG macro.)
  828 AC_DEFUN([AM_RUN_LOG],
  829 [{ echo "$as_me:$LINENO: $1" >&AS_MESSAGE_LOG_FD
  830    ($1) >&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD
  831    ac_status=$?
  832    echo "$as_me:$LINENO: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
  833    (exit $ac_status); }])
  834 
  835 # Check to make sure that the build environment is sane.    -*- Autoconf -*-
  836 
  837 # Copyright (C) 1996-2018 Free Software Foundation, Inc.
  838 #
  839 # This file is free software; the Free Software Foundation
  840 # gives unlimited permission to copy and/or distribute it,
  841 # with or without modifications, as long as this notice is preserved.
  842 
  843 # AM_SANITY_CHECK
  844 # ---------------
  845 AC_DEFUN([AM_SANITY_CHECK],
  846 [AC_MSG_CHECKING([whether build environment is sane])
  847 # Reject unsafe characters in $srcdir or the absolute working directory
  848 # name.  Accept space and tab only in the latter.
  849 am_lf='
  850 '
  851 case `pwd` in
  852   *[[\\\"\#\$\&\'\`$am_lf]]*)
  853     AC_MSG_ERROR([unsafe absolute working directory name]);;
  854 esac
  855 case $srcdir in
  856   *[[\\\"\#\$\&\'\`$am_lf\ \	]]*)
  857     AC_MSG_ERROR([unsafe srcdir value: '$srcdir']);;
  858 esac
  859 
  860 # Do 'set' in a subshell so we don't clobber the current shell's
  861 # arguments.  Must try -L first in case configure is actually a
  862 # symlink; some systems play weird games with the mod time of symlinks
  863 # (eg FreeBSD returns the mod time of the symlink's containing
  864 # directory).
  865 if (
  866    am_has_slept=no
  867    for am_try in 1 2; do
  868      echo "timestamp, slept: $am_has_slept" > conftest.file
  869      set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
  870      if test "$[*]" = "X"; then
  871 	# -L didn't work.
  872 	set X `ls -t "$srcdir/configure" conftest.file`
  873      fi
  874      if test "$[*]" != "X $srcdir/configure conftest.file" \
  875 	&& test "$[*]" != "X conftest.file $srcdir/configure"; then
  876 
  877 	# If neither matched, then we have a broken ls.  This can happen
  878 	# if, for instance, CONFIG_SHELL is bash and it inherits a
  879 	# broken ls alias from the environment.  This has actually
  880 	# happened.  Such a system could not be considered "sane".
  881 	AC_MSG_ERROR([ls -t appears to fail.  Make sure there is not a broken
  882   alias in your environment])
  883      fi
  884      if test "$[2]" = conftest.file || test $am_try -eq 2; then
  885        break
  886      fi
  887      # Just in case.
  888      sleep 1
  889      am_has_slept=yes
  890    done
  891    test "$[2]" = conftest.file
  892    )
  893 then
  894    # Ok.
  895    :
  896 else
  897    AC_MSG_ERROR([newly created file is older than distributed files!
  898 Check your system clock])
  899 fi
  900 AC_MSG_RESULT([yes])
  901 # If we didn't sleep, we still need to ensure time stamps of config.status and
  902 # generated files are strictly newer.
  903 am_sleep_pid=
  904 if grep 'slept: no' conftest.file >/dev/null 2>&1; then
  905   ( sleep 1 ) &
  906   am_sleep_pid=$!
  907 fi
  908 AC_CONFIG_COMMANDS_PRE(
  909   [AC_MSG_CHECKING([that generated files are newer than configure])
  910    if test -n "$am_sleep_pid"; then
  911      # Hide warnings about reused PIDs.
  912      wait $am_sleep_pid 2>/dev/null
  913    fi
  914    AC_MSG_RESULT([done])])
  915 rm -f conftest.file
  916 ])
  917 
  918 # Copyright (C) 2009-2018 Free Software Foundation, Inc.
  919 #
  920 # This file is free software; the Free Software Foundation
  921 # gives unlimited permission to copy and/or distribute it,
  922 # with or without modifications, as long as this notice is preserved.
  923 
  924 # AM_SILENT_RULES([DEFAULT])
  925 # --------------------------
  926 # Enable less verbose build rules; with the default set to DEFAULT
  927 # ("yes" being less verbose, "no" or empty being verbose).
  928 AC_DEFUN([AM_SILENT_RULES],
  929 [AC_ARG_ENABLE([silent-rules], [dnl
  930 AS_HELP_STRING(
  931   [--enable-silent-rules],
  932   [less verbose build output (undo: "make V=1")])
  933 AS_HELP_STRING(
  934   [--disable-silent-rules],
  935   [verbose build output (undo: "make V=0")])dnl
  936 ])
  937 case $enable_silent_rules in @%:@ (((
  938   yes) AM_DEFAULT_VERBOSITY=0;;
  939    no) AM_DEFAULT_VERBOSITY=1;;
  940     *) AM_DEFAULT_VERBOSITY=m4_if([$1], [yes], [0], [1]);;
  941 esac
  942 dnl
  943 dnl A few 'make' implementations (e.g., NonStop OS and NextStep)
  944 dnl do not support nested variable expansions.
  945 dnl See automake bug#9928 and bug#10237.
  946 am_make=${MAKE-make}
  947 AC_CACHE_CHECK([whether $am_make supports nested variables],
  948    [am_cv_make_support_nested_variables],
  949    [if AS_ECHO([['TRUE=$(BAR$(V))
  950 BAR0=false
  951 BAR1=true
  952 V=1
  953 am__doit:
  954 	@$(TRUE)
  955 .PHONY: am__doit']]) | $am_make -f - >/dev/null 2>&1; then
  956   am_cv_make_support_nested_variables=yes
  957 else
  958   am_cv_make_support_nested_variables=no
  959 fi])
  960 if test $am_cv_make_support_nested_variables = yes; then
  961   dnl Using '$V' instead of '$(V)' breaks IRIX make.
  962   AM_V='$(V)'
  963   AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
  964 else
  965   AM_V=$AM_DEFAULT_VERBOSITY
  966   AM_DEFAULT_V=$AM_DEFAULT_VERBOSITY
  967 fi
  968 AC_SUBST([AM_V])dnl
  969 AM_SUBST_NOTMAKE([AM_V])dnl
  970 AC_SUBST([AM_DEFAULT_V])dnl
  971 AM_SUBST_NOTMAKE([AM_DEFAULT_V])dnl
  972 AC_SUBST([AM_DEFAULT_VERBOSITY])dnl
  973 AM_BACKSLASH='\'
  974 AC_SUBST([AM_BACKSLASH])dnl
  975 _AM_SUBST_NOTMAKE([AM_BACKSLASH])dnl
  976 ])
  977 
  978 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
  979 #
  980 # This file is free software; the Free Software Foundation
  981 # gives unlimited permission to copy and/or distribute it,
  982 # with or without modifications, as long as this notice is preserved.
  983 
  984 # AM_PROG_INSTALL_STRIP
  985 # ---------------------
  986 # One issue with vendor 'install' (even GNU) is that you can't
  987 # specify the program used to strip binaries.  This is especially
  988 # annoying in cross-compiling environments, where the build's strip
  989 # is unlikely to handle the host's binaries.
  990 # Fortunately install-sh will honor a STRIPPROG variable, so we
  991 # always use install-sh in "make install-strip", and initialize
  992 # STRIPPROG with the value of the STRIP variable (set by the user).
  993 AC_DEFUN([AM_PROG_INSTALL_STRIP],
  994 [AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
  995 # Installed binaries are usually stripped using 'strip' when the user
  996 # run "make install-strip".  However 'strip' might not be the right
  997 # tool to use in cross-compilation environments, therefore Automake
  998 # will honor the 'STRIP' environment variable to overrule this program.
  999 dnl Don't test for $cross_compiling = yes, because it might be 'maybe'.
 1000 if test "$cross_compiling" != no; then
 1001   AC_CHECK_TOOL([STRIP], [strip], :)
 1002 fi
 1003 INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
 1004 AC_SUBST([INSTALL_STRIP_PROGRAM])])
 1005 
 1006 # Copyright (C) 2006-2018 Free Software Foundation, Inc.
 1007 #
 1008 # This file is free software; the Free Software Foundation
 1009 # gives unlimited permission to copy and/or distribute it,
 1010 # with or without modifications, as long as this notice is preserved.
 1011 
 1012 # _AM_SUBST_NOTMAKE(VARIABLE)
 1013 # ---------------------------
 1014 # Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in.
 1015 # This macro is traced by Automake.
 1016 AC_DEFUN([_AM_SUBST_NOTMAKE])
 1017 
 1018 # AM_SUBST_NOTMAKE(VARIABLE)
 1019 # --------------------------
 1020 # Public sister of _AM_SUBST_NOTMAKE.
 1021 AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
 1022 
 1023 # Check how to create a tarball.                            -*- Autoconf -*-
 1024 
 1025 # Copyright (C) 2004-2018 Free Software Foundation, Inc.
 1026 #
 1027 # This file is free software; the Free Software Foundation
 1028 # gives unlimited permission to copy and/or distribute it,
 1029 # with or without modifications, as long as this notice is preserved.
 1030 
 1031 # _AM_PROG_TAR(FORMAT)
 1032 # --------------------
 1033 # Check how to create a tarball in format FORMAT.
 1034 # FORMAT should be one of 'v7', 'ustar', or 'pax'.
 1035 #
 1036 # Substitute a variable $(am__tar) that is a command
 1037 # writing to stdout a FORMAT-tarball containing the directory
 1038 # $tardir.
 1039 #     tardir=directory && $(am__tar) > result.tar
 1040 #
 1041 # Substitute a variable $(am__untar) that extract such
 1042 # a tarball read from stdin.
 1043 #     $(am__untar) < result.tar
 1044 #
 1045 AC_DEFUN([_AM_PROG_TAR],
 1046 [# Always define AMTAR for backward compatibility.  Yes, it's still used
 1047 # in the wild :-(  We should find a proper way to deprecate it ...
 1048 AC_SUBST([AMTAR], ['$${TAR-tar}'])
 1049 
 1050 # We'll loop over all known methods to create a tar archive until one works.
 1051 _am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
 1052 
 1053 m4_if([$1], [v7],
 1054   [am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'],
 1055 
 1056   [m4_case([$1],
 1057     [ustar],
 1058      [# The POSIX 1988 'ustar' format is defined with fixed-size fields.
 1059       # There is notably a 21 bits limit for the UID and the GID.  In fact,
 1060       # the 'pax' utility can hang on bigger UID/GID (see automake bug#8343
 1061       # and bug#13588).
 1062       am_max_uid=2097151 # 2^21 - 1
 1063       am_max_gid=$am_max_uid
 1064       # The $UID and $GID variables are not portable, so we need to resort
 1065       # to the POSIX-mandated id(1) utility.  Errors in the 'id' calls
 1066       # below are definitely unexpected, so allow the users to see them
 1067       # (that is, avoid stderr redirection).
 1068       am_uid=`id -u || echo unknown`
 1069       am_gid=`id -g || echo unknown`
 1070       AC_MSG_CHECKING([whether UID '$am_uid' is supported by ustar format])
 1071       if test $am_uid -le $am_max_uid; then
 1072          AC_MSG_RESULT([yes])
 1073       else
 1074          AC_MSG_RESULT([no])
 1075          _am_tools=none
 1076       fi
 1077       AC_MSG_CHECKING([whether GID '$am_gid' is supported by ustar format])
 1078       if test $am_gid -le $am_max_gid; then
 1079          AC_MSG_RESULT([yes])
 1080       else
 1081         AC_MSG_RESULT([no])
 1082         _am_tools=none
 1083       fi],
 1084 
 1085   [pax],
 1086     [],
 1087 
 1088   [m4_fatal([Unknown tar format])])
 1089 
 1090   AC_MSG_CHECKING([how to create a $1 tar archive])
 1091 
 1092   # Go ahead even if we have the value already cached.  We do so because we
 1093   # need to set the values for the 'am__tar' and 'am__untar' variables.
 1094   _am_tools=${am_cv_prog_tar_$1-$_am_tools}
 1095 
 1096   for _am_tool in $_am_tools; do
 1097     case $_am_tool in
 1098     gnutar)
 1099       for _am_tar in tar gnutar gtar; do
 1100         AM_RUN_LOG([$_am_tar --version]) && break
 1101       done
 1102       am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"'
 1103       am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"'
 1104       am__untar="$_am_tar -xf -"
 1105       ;;
 1106     plaintar)
 1107       # Must skip GNU tar: if it does not support --format= it doesn't create
 1108       # ustar tarball either.
 1109       (tar --version) >/dev/null 2>&1 && continue
 1110       am__tar='tar chf - "$$tardir"'
 1111       am__tar_='tar chf - "$tardir"'
 1112       am__untar='tar xf -'
 1113       ;;
 1114     pax)
 1115       am__tar='pax -L -x $1 -w "$$tardir"'
 1116       am__tar_='pax -L -x $1 -w "$tardir"'
 1117       am__untar='pax -r'
 1118       ;;
 1119     cpio)
 1120       am__tar='find "$$tardir" -print | cpio -o -H $1 -L'
 1121       am__tar_='find "$tardir" -print | cpio -o -H $1 -L'
 1122       am__untar='cpio -i -H $1 -d'
 1123       ;;
 1124     none)
 1125       am__tar=false
 1126       am__tar_=false
 1127       am__untar=false
 1128       ;;
 1129     esac
 1130 
 1131     # If the value was cached, stop now.  We just wanted to have am__tar
 1132     # and am__untar set.
 1133     test -n "${am_cv_prog_tar_$1}" && break
 1134 
 1135     # tar/untar a dummy directory, and stop if the command works.
 1136     rm -rf conftest.dir
 1137     mkdir conftest.dir
 1138     echo GrepMe > conftest.dir/file
 1139     AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar])
 1140     rm -rf conftest.dir
 1141     if test -s conftest.tar; then
 1142       AM_RUN_LOG([$am__untar <conftest.tar])
 1143       AM_RUN_LOG([cat conftest.dir/file])
 1144       grep GrepMe conftest.dir/file >/dev/null 2>&1 && break
 1145     fi
 1146   done
 1147   rm -rf conftest.dir
 1148 
 1149   AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])
 1150   AC_MSG_RESULT([$am_cv_prog_tar_$1])])
 1151 
 1152 AC_SUBST([am__tar])
 1153 AC_SUBST([am__untar])
 1154 ]) # _AM_PROG_TAR
 1155 
 1156 m4_include([m4/libtool.m4])
 1157 m4_include([m4/ltoptions.m4])
 1158 m4_include([m4/ltsugar.m4])
 1159 m4_include([m4/ltversion.m4])
 1160 m4_include([m4/lt~obsolete.m4])
 1161 m4_include([acinclude.m4])