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      1 # generated automatically by aclocal 1.15.1 -*- Autoconf -*-
      2 
      3 # Copyright (C) 1996-2017 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 # Copyright (C) 2002-2017 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)
     30 # ----------------------------
     31 # Automake X.Y traces this macro to ensure aclocal.m4 has been
     32 # generated from the m4 files accompanying Automake X.Y.
     33 # (This private macro should not be called outside this file.)
     34 AC_DEFUN([AM_AUTOMAKE_VERSION],
     35 [am__api_version='1.15'
     36 dnl Some users find AM_AUTOMAKE_VERSION and mistake it for a way to
     37 dnl require some minimum version.  Point them to the right macro.
     38 m4_if([$1], [1.15.1], [],
     39       [AC_FATAL([Do not call $0, use AM_INIT_AUTOMAKE([$1]).])])dnl
     40 ])
     41 
     42 # _AM_AUTOCONF_VERSION(VERSION)
     43 # -----------------------------
     44 # aclocal traces this macro to find the Autoconf version.
     45 # This is a private macro too.  Using m4_define simplifies
     46 # the logic in aclocal, which can simply ignore this definition.
     47 m4_define([_AM_AUTOCONF_VERSION], [])
     48 
     49 # AM_SET_CURRENT_AUTOMAKE_VERSION
     50 # -------------------------------
     51 # Call AM_AUTOMAKE_VERSION and AM_AUTOMAKE_VERSION so they can be traced.
     52 # This function is AC_REQUIREd by AM_INIT_AUTOMAKE.
     53 AC_DEFUN([AM_SET_CURRENT_AUTOMAKE_VERSION],
     54 [AM_AUTOMAKE_VERSION([1.15.1])dnl
     55 m4_ifndef([AC_AUTOCONF_VERSION],
     56   [m4_copy([m4_PACKAGE_VERSION], [AC_AUTOCONF_VERSION])])dnl
     57 _AM_AUTOCONF_VERSION(m4_defn([AC_AUTOCONF_VERSION]))])
     58 
     59 # AM_AUX_DIR_EXPAND                                         -*- Autoconf -*-
     60 
     61 # Copyright (C) 2001-2017 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.
     66 
     67 # For projects using AC_CONFIG_AUX_DIR([foo]), Autoconf sets
     68 # $ac_aux_dir to '$srcdir/foo'.  In other projects, it is set to
     69 # '$srcdir', '$srcdir/..', or '$srcdir/../..'.
     70 #
     71 # Of course, Automake must honor this variable whenever it calls a
     72 # tool from the auxiliary directory.  The problem is that $srcdir (and
     73 # therefore $ac_aux_dir as well) can be either absolute or relative,
     74 # depending on how configure is run.  This is pretty annoying, since
     75 # it makes $ac_aux_dir quite unusable in subdirectories: in the top
     76 # source directory, any form will work fine, but in subdirectories a
     77 # relative path needs to be adjusted first.
     78 #
     79 # $ac_aux_dir/missing
     80 #    fails when called from a subdirectory if $ac_aux_dir is relative
     81 # $top_srcdir/$ac_aux_dir/missing
     82 #    fails if $ac_aux_dir is absolute,
     83 #    fails when called from a subdirectory in a VPATH build with
     84 #          a relative $ac_aux_dir
     85 #
     86 # The reason of the latter failure is that $top_srcdir and $ac_aux_dir
     87 # are both prefixed by $srcdir.  In an in-source build this is usually
     88 # harmless because $srcdir is '.', but things will broke when you
     89 # start a VPATH build or use an absolute $srcdir.
     90 #
     91 # So we could use something similar to $top_srcdir/$ac_aux_dir/missing,
     92 # iff we strip the leading $srcdir from $ac_aux_dir.  That would be:
     93 #   am_aux_dir='\$(top_srcdir)/'`expr "$ac_aux_dir" : "$srcdir//*\(.*\)"`
     94 # and then we would define $MISSING as
     95 #   MISSING="\${SHELL} $am_aux_dir/missing"
     96 # This will work as long as MISSING is not called from configure, because
     97 # unfortunately $(top_srcdir) has no meaning in configure.
     98 # However there are other variables, like CC, which are often used in
     99 # configure, and could therefore not use this "fixed" $ac_aux_dir.
    100 #
    101 # Another solution, used here, is to always expand $ac_aux_dir to an
    102 # absolute PATH.  The drawback is that using absolute paths prevent a
    103 # configured tree to be moved without reconfiguration.
    104 
    105 AC_DEFUN([AM_AUX_DIR_EXPAND],
    106 [AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT])dnl
    107 # Expand $ac_aux_dir to an absolute path.
    108 am_aux_dir=`cd "$ac_aux_dir" && pwd`
    109 ])
    110 
    111 # AM_CONDITIONAL                                            -*- Autoconf -*-
    112 
    113 # Copyright (C) 1997-2017 Free Software Foundation, Inc.
    114 #
    115 # This file is free software; the Free Software Foundation
    116 # gives unlimited permission to copy and/or distribute it,
    117 # with or without modifications, as long as this notice is preserved.
    118 
    119 # AM_CONDITIONAL(NAME, SHELL-CONDITION)
    120 # -------------------------------------
    121 # Define a conditional.
    122 AC_DEFUN([AM_CONDITIONAL],
    123 [AC_PREREQ([2.52])dnl
    124  m4_if([$1], [TRUE],  [AC_FATAL([$0: invalid condition: $1])],
    125        [$1], [FALSE], [AC_FATAL([$0: invalid condition: $1])])dnl
    126 AC_SUBST([$1_TRUE])dnl
    127 AC_SUBST([$1_FALSE])dnl
    128 _AM_SUBST_NOTMAKE([$1_TRUE])dnl
    129 _AM_SUBST_NOTMAKE([$1_FALSE])dnl
    130 m4_define([_AM_COND_VALUE_$1], [$2])dnl
    131 if $2; then
    132   $1_TRUE=
    133   $1_FALSE='#'
    134 else
    135   $1_TRUE='#'
    136   $1_FALSE=
    137 fi
    138 AC_CONFIG_COMMANDS_PRE(
    139 [if test -z "${$1_TRUE}" && test -z "${$1_FALSE}"; then
    140   AC_MSG_ERROR([[conditional "$1" was never defined.
    141 Usually this means the macro was only invoked conditionally.]])
    142 fi])])
    143 
    144 # Do all the work for Automake.                             -*- Autoconf -*-
    145 
    146 # Copyright (C) 1996-2017 Free Software Foundation, Inc.
    147 #
    148 # This file is free software; the Free Software Foundation
    149 # gives unlimited permission to copy and/or distribute it,
    150 # with or without modifications, as long as this notice is preserved.
    151 
    152 # This macro actually does too much.  Some checks are only needed if
    153 # your package does certain things.  But this isn't really a big deal.
    154 
    155 dnl Redefine AC_PROG_CC to automatically invoke _AM_PROG_CC_C_O.
    156 m4_define([AC_PROG_CC],
    157 m4_defn([AC_PROG_CC])
    158 [_AM_PROG_CC_C_O
    159 ])
    160 
    161 # AM_INIT_AUTOMAKE(PACKAGE, VERSION, [NO-DEFINE])
    162 # AM_INIT_AUTOMAKE([OPTIONS])
    163 # -----------------------------------------------
    164 # The call with PACKAGE and VERSION arguments is the old style
    165 # call (pre autoconf-2.50), which is being phased out.  PACKAGE
    166 # and VERSION should now be passed to AC_INIT and removed from
    167 # the call to AM_INIT_AUTOMAKE.
    168 # We support both call styles for the transition.  After
    169 # the next Automake release, Autoconf can make the AC_INIT
    170 # arguments mandatory, and then we can depend on a new Autoconf
    171 # release and drop the old call support.
    172 AC_DEFUN([AM_INIT_AUTOMAKE],
    173 [AC_PREREQ([2.65])dnl
    174 dnl Autoconf wants to disallow AM_ names.  We explicitly allow
    175 dnl the ones we care about.
    176 m4_pattern_allow([^AM_[A-Z]+FLAGS$])dnl
    177 AC_REQUIRE([AM_SET_CURRENT_AUTOMAKE_VERSION])dnl
    178 AC_REQUIRE([AC_PROG_INSTALL])dnl
    179 if test "`cd $srcdir && pwd`" != "`pwd`"; then
    180   # Use -I$(srcdir) only when $(srcdir) != ., so that make's output
    181   # is not polluted with repeated "-I."
    182   AC_SUBST([am__isrc], [' -I$(srcdir)'])_AM_SUBST_NOTMAKE([am__isrc])dnl
    183   # test to see if srcdir already configured
    184   if test -f $srcdir/config.status; then
    185     AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
    186   fi
    187 fi
    188 
    189 # test whether we have cygpath
    190 if test -z "$CYGPATH_W"; then
    191   if (cygpath --version) >/dev/null 2>/dev/null; then
    192     CYGPATH_W='cygpath -w'
    193   else
    194     CYGPATH_W=echo
    195   fi
    196 fi
    197 AC_SUBST([CYGPATH_W])
    198 
    199 # Define the identity of the package.
    200 dnl Distinguish between old-style and new-style calls.
    201 m4_ifval([$2],
    202 [AC_DIAGNOSE([obsolete],
    203              [$0: two- and three-arguments forms are deprecated.])
    204 m4_ifval([$3], [_AM_SET_OPTION([no-define])])dnl
    205  AC_SUBST([PACKAGE], [$1])dnl
    206  AC_SUBST([VERSION], [$2])],
    207 [_AM_SET_OPTIONS([$1])dnl
    208 dnl Diagnose old-style AC_INIT with new-style AM_AUTOMAKE_INIT.
    209 m4_if(
    210   m4_ifdef([AC_PACKAGE_NAME], [ok]):m4_ifdef([AC_PACKAGE_VERSION], [ok]),
    211   [ok:ok],,
    212   [m4_fatal([AC_INIT should be called with package and version arguments])])dnl
    213  AC_SUBST([PACKAGE], ['AC_PACKAGE_TARNAME'])dnl
    214  AC_SUBST([VERSION], ['AC_PACKAGE_VERSION'])])dnl
    215 
    216 _AM_IF_OPTION([no-define],,
    217 [AC_DEFINE_UNQUOTED([PACKAGE], ["$PACKAGE"], [Name of package])
    218  AC_DEFINE_UNQUOTED([VERSION], ["$VERSION"], [Version number of package])])dnl
    219 
    220 # Some tools Automake needs.
    221 AC_REQUIRE([AM_SANITY_CHECK])dnl
    222 AC_REQUIRE([AC_ARG_PROGRAM])dnl
    223 AM_MISSING_PROG([ACLOCAL], [aclocal-${am__api_version}])
    224 AM_MISSING_PROG([AUTOCONF], [autoconf])
    225 AM_MISSING_PROG([AUTOMAKE], [automake-${am__api_version}])
    226 AM_MISSING_PROG([AUTOHEADER], [autoheader])
    227 AM_MISSING_PROG([MAKEINFO], [makeinfo])
    228 AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
    229 AC_REQUIRE([AM_PROG_INSTALL_STRIP])dnl
    230 AC_REQUIRE([AC_PROG_MKDIR_P])dnl
    231 # For better backward compatibility.  To be removed once Automake 1.9.x
    232 # dies out for good.  For more background, see:
    233 # <http://lists.gnu.org/archive/html/automake/2012-07/msg00001.html>
    234 # <http://lists.gnu.org/archive/html/automake/2012-07/msg00014.html>
    235 AC_SUBST([mkdir_p], ['$(MKDIR_P)'])
    236 # We need awk for the "check" target (and possibly the TAP driver).  The
    237 # system "awk" is bad on some platforms.
    238 AC_REQUIRE([AC_PROG_AWK])dnl
    239 AC_REQUIRE([AC_PROG_MAKE_SET])dnl
    240 AC_REQUIRE([AM_SET_LEADING_DOT])dnl
    241 _AM_IF_OPTION([tar-ustar], [_AM_PROG_TAR([ustar])],
    242 	      [_AM_IF_OPTION([tar-pax], [_AM_PROG_TAR([pax])],
    243 			     [_AM_PROG_TAR([v7])])])
    244 _AM_IF_OPTION([no-dependencies],,
    245 [AC_PROVIDE_IFELSE([AC_PROG_CC],
    246 		  [_AM_DEPENDENCIES([CC])],
    247 		  [m4_define([AC_PROG_CC],
    248 			     m4_defn([AC_PROG_CC])[_AM_DEPENDENCIES([CC])])])dnl
    249 AC_PROVIDE_IFELSE([AC_PROG_CXX],
    250 		  [_AM_DEPENDENCIES([CXX])],
    251 		  [m4_define([AC_PROG_CXX],
    252 			     m4_defn([AC_PROG_CXX])[_AM_DEPENDENCIES([CXX])])])dnl
    253 AC_PROVIDE_IFELSE([AC_PROG_OBJC],
    254 		  [_AM_DEPENDENCIES([OBJC])],
    255 		  [m4_define([AC_PROG_OBJC],
    256 			     m4_defn([AC_PROG_OBJC])[_AM_DEPENDENCIES([OBJC])])])dnl
    257 AC_PROVIDE_IFELSE([AC_PROG_OBJCXX],
    258 		  [_AM_DEPENDENCIES([OBJCXX])],
    259 		  [m4_define([AC_PROG_OBJCXX],
    260 			     m4_defn([AC_PROG_OBJCXX])[_AM_DEPENDENCIES([OBJCXX])])])dnl
    261 ])
    262 AC_REQUIRE([AM_SILENT_RULES])dnl
    263 dnl The testsuite driver may need to know about EXEEXT, so add the
    264 dnl 'am__EXEEXT' conditional if _AM_COMPILER_EXEEXT was seen.  This
    265 dnl macro is hooked onto _AC_COMPILER_EXEEXT early, see below.
    266 AC_CONFIG_COMMANDS_PRE(dnl
    267 [m4_provide_if([_AM_COMPILER_EXEEXT],
    268   [AM_CONDITIONAL([am__EXEEXT], [test -n "$EXEEXT"])])])dnl
    269 
    270 # POSIX will say in a future version that running "rm -f" with no argument
    271 # is OK; and we want to be able to make that assumption in our Makefile
    272 # recipes.  So use an aggressive probe to check that the usage we want is
    273 # actually supported "in the wild" to an acceptable degree.
    274 # See automake bug#10828.
    275 # To make any issue more visible, cause the running configure to be aborted
    276 # by default if the 'rm' program in use doesn't match our expectations; the
    277 # user can still override this though.
    278 if rm -f && rm -fr && rm -rf; then : OK; else
    279   cat >&2 <<'END'
    280 Oops!
    281 
    282 Your 'rm' program seems unable to run without file operands specified
    283 on the command line, even when the '-f' option is present.  This is contrary
    284 to the behaviour of most rm programs out there, and not conforming with
    285 the upcoming POSIX standard: <http://austingroupbugs.net/view.php?id=542>
    286 
    287 Please tell bug-automake (a] gnu.org about your system, including the value
    288 of your $PATH and any error possibly output before this message.  This
    289 can help us improve future automake versions.
    290 
    291 END
    292   if test x"$ACCEPT_INFERIOR_RM_PROGRAM" = x"yes"; then
    293     echo 'Configuration will proceed anyway, since you have set the' >&2
    294     echo 'ACCEPT_INFERIOR_RM_PROGRAM variable to "yes"' >&2
    295     echo >&2
    296   else
    297     cat >&2 <<'END'
    298 Aborting the configuration process, to ensure you take notice of the issue.
    299 
    300 You can download and install GNU coreutils to get an 'rm' implementation
    301 that behaves properly: <http://www.gnu.org/software/coreutils/>.
    302 
    303 If you want to complete the configuration process using your problematic
    304 'rm' anyway, export the environment variable ACCEPT_INFERIOR_RM_PROGRAM
    305 to "yes", and re-run configure.
    306 
    307 END
    308     AC_MSG_ERROR([Your 'rm' program is bad, sorry.])
    309   fi
    310 fi
    311 dnl The trailing newline in this macro's definition is deliberate, for
    312 dnl backward compatibility and to allow trailing 'dnl'-style comments
    313 dnl after the AM_INIT_AUTOMAKE invocation. See automake bug#16841.
    314 ])
    315 
    316 dnl Hook into '_AC_COMPILER_EXEEXT' early to learn its expansion.  Do not
    317 dnl add the conditional right here, as _AC_COMPILER_EXEEXT may be further
    318 dnl mangled by Autoconf and run in a shell conditional statement.
    319 m4_define([_AC_COMPILER_EXEEXT],
    320 m4_defn([_AC_COMPILER_EXEEXT])[m4_provide([_AM_COMPILER_EXEEXT])])
    321 
    322 # When config.status generates a header, we must update the stamp-h file.
    323 # This file resides in the same directory as the config header
    324 # that is generated.  The stamp files are numbered to have different names.
    325 
    326 # Autoconf calls _AC_AM_CONFIG_HEADER_HOOK (when defined) in the
    327 # loop where config.status creates the headers, so we can generate
    328 # our stamp files there.
    329 AC_DEFUN([_AC_AM_CONFIG_HEADER_HOOK],
    330 [# Compute $1's index in $config_headers.
    331 _am_arg=$1
    332 _am_stamp_count=1
    333 for _am_header in $config_headers :; do
    334   case $_am_header in
    335     $_am_arg | $_am_arg:* )
    336       break ;;
    337     * )
    338       _am_stamp_count=`expr $_am_stamp_count + 1` ;;
    339   esac
    340 done
    341 echo "timestamp for $_am_arg" >`AS_DIRNAME(["$_am_arg"])`/stamp-h[]$_am_stamp_count])
    342 
    343 # Copyright (C) 2001-2017 Free Software Foundation, Inc.
    344 #
    345 # This file is free software; the Free Software Foundation
    346 # gives unlimited permission to copy and/or distribute it,
    347 # with or without modifications, as long as this notice is preserved.
    348 
    349 # AM_PROG_INSTALL_SH
    350 # ------------------
    351 # Define $install_sh.
    352 AC_DEFUN([AM_PROG_INSTALL_SH],
    353 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
    354 if test x"${install_sh+set}" != xset; then
    355   case $am_aux_dir in
    356   *\ * | *\	*)
    357     install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
    358   *)
    359     install_sh="\${SHELL} $am_aux_dir/install-sh"
    360   esac
    361 fi
    362 AC_SUBST([install_sh])])
    363 
    364 # Add --enable-maintainer-mode option to configure.         -*- Autoconf -*-
    365 # From Jim Meyering
    366 
    367 # Copyright (C) 1996-2017 Free Software Foundation, Inc.
    368 #
    369 # This file is free software; the Free Software Foundation
    370 # gives unlimited permission to copy and/or distribute it,
    371 # with or without modifications, as long as this notice is preserved.
    372 
    373 # AM_MAINTAINER_MODE([DEFAULT-MODE])
    374 # ----------------------------------
    375 # Control maintainer-specific portions of Makefiles.
    376 # Default is to disable them, unless 'enable' is passed literally.
    377 # For symmetry, 'disable' may be passed as well.  Anyway, the user
    378 # can override the default with the --enable/--disable switch.
    379 AC_DEFUN([AM_MAINTAINER_MODE],
    380 [m4_case(m4_default([$1], [disable]),
    381        [enable], [m4_define([am_maintainer_other], [disable])],
    382        [disable], [m4_define([am_maintainer_other], [enable])],
    383        [m4_define([am_maintainer_other], [enable])
    384         m4_warn([syntax], [unexpected argument to AM@&t@_MAINTAINER_MODE: $1])])
    385 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
    386   dnl maintainer-mode's default is 'disable' unless 'enable' is passed
    387   AC_ARG_ENABLE([maintainer-mode],
    388     [AS_HELP_STRING([--]am_maintainer_other[-maintainer-mode],
    389       am_maintainer_other[ make rules and dependencies not useful
    390       (and sometimes confusing) to the casual installer])],
    391     [USE_MAINTAINER_MODE=$enableval],
    392     [USE_MAINTAINER_MODE=]m4_if(am_maintainer_other, [enable], [no], [yes]))
    393   AC_MSG_RESULT([$USE_MAINTAINER_MODE])
    394   AM_CONDITIONAL([MAINTAINER_MODE], [test $USE_MAINTAINER_MODE = yes])
    395   MAINT=$MAINTAINER_MODE_TRUE
    396   AC_SUBST([MAINT])dnl
    397 ]
    398 )
    399 
    400 # Fake the existence of programs that GNU maintainers use.  -*- Autoconf -*-
    401 
    402 # Copyright (C) 1997-2017 Free Software Foundation, Inc.
    403 #
    404 # This file is free software; the Free Software Foundation
    405 # gives unlimited permission to copy and/or distribute it,
    406 # with or without modifications, as long as this notice is preserved.
    407 
    408 # AM_MISSING_PROG(NAME, PROGRAM)
    409 # ------------------------------
    410 AC_DEFUN([AM_MISSING_PROG],
    411 [AC_REQUIRE([AM_MISSING_HAS_RUN])
    412 $1=${$1-"${am_missing_run}$2"}
    413 AC_SUBST($1)])
    414 
    415 # AM_MISSING_HAS_RUN
    416 # ------------------
    417 # Define MISSING if not defined so far and test if it is modern enough.
    418 # If it is, set am_missing_run to use it, otherwise, to nothing.
    419 AC_DEFUN([AM_MISSING_HAS_RUN],
    420 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
    421 AC_REQUIRE_AUX_FILE([missing])dnl
    422 if test x"${MISSING+set}" != xset; then
    423   case $am_aux_dir in
    424   *\ * | *\	*)
    425     MISSING="\${SHELL} \"$am_aux_dir/missing\"" ;;
    426   *)
    427     MISSING="\${SHELL} $am_aux_dir/missing" ;;
    428   esac
    429 fi
    430 # Use eval to expand $SHELL
    431 if eval "$MISSING --is-lightweight"; then
    432   am_missing_run="$MISSING "
    433 else
    434   am_missing_run=
    435   AC_MSG_WARN(['missing' script is too old or missing])
    436 fi
    437 ])
    438 
    439 # Helper functions for option handling.                     -*- Autoconf -*-
    440 
    441 # Copyright (C) 2001-2017 Free Software Foundation, Inc.
    442 #
    443 # This file is free software; the Free Software Foundation
    444 # gives unlimited permission to copy and/or distribute it,
    445 # with or without modifications, as long as this notice is preserved.
    446 
    447 # _AM_MANGLE_OPTION(NAME)
    448 # -----------------------
    449 AC_DEFUN([_AM_MANGLE_OPTION],
    450 [[_AM_OPTION_]m4_bpatsubst($1, [[^a-zA-Z0-9_]], [_])])
    451 
    452 # _AM_SET_OPTION(NAME)
    453 # --------------------
    454 # Set option NAME.  Presently that only means defining a flag for this option.
    455 AC_DEFUN([_AM_SET_OPTION],
    456 [m4_define(_AM_MANGLE_OPTION([$1]), [1])])
    457 
    458 # _AM_SET_OPTIONS(OPTIONS)
    459 # ------------------------
    460 # OPTIONS is a space-separated list of Automake options.
    461 AC_DEFUN([_AM_SET_OPTIONS],
    462 [m4_foreach_w([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])])
    463 
    464 # _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET])
    465 # -------------------------------------------
    466 # Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
    467 AC_DEFUN([_AM_IF_OPTION],
    468 [m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])
    469 
    470 # Check to make sure that the build environment is sane.    -*- Autoconf -*-
    471 
    472 # Copyright (C) 1996-2017 Free Software Foundation, Inc.
    473 #
    474 # This file is free software; the Free Software Foundation
    475 # gives unlimited permission to copy and/or distribute it,
    476 # with or without modifications, as long as this notice is preserved.
    477 
    478 # AM_SANITY_CHECK
    479 # ---------------
    480 AC_DEFUN([AM_SANITY_CHECK],
    481 [AC_MSG_CHECKING([whether build environment is sane])
    482 # Reject unsafe characters in $srcdir or the absolute working directory
    483 # name.  Accept space and tab only in the latter.
    484 am_lf='
    485 '
    486 case `pwd` in
    487   *[[\\\"\#\$\&\'\`$am_lf]]*)
    488     AC_MSG_ERROR([unsafe absolute working directory name]);;
    489 esac
    490 case $srcdir in
    491   *[[\\\"\#\$\&\'\`$am_lf\ \	]]*)
    492     AC_MSG_ERROR([unsafe srcdir value: '$srcdir']);;
    493 esac
    494 
    495 # Do 'set' in a subshell so we don't clobber the current shell's
    496 # arguments.  Must try -L first in case configure is actually a
    497 # symlink; some systems play weird games with the mod time of symlinks
    498 # (eg FreeBSD returns the mod time of the symlink's containing
    499 # directory).
    500 if (
    501    am_has_slept=no
    502    for am_try in 1 2; do
    503      echo "timestamp, slept: $am_has_slept" > conftest.file
    504      set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
    505      if test "$[*]" = "X"; then
    506 	# -L didn't work.
    507 	set X `ls -t "$srcdir/configure" conftest.file`
    508      fi
    509      if test "$[*]" != "X $srcdir/configure conftest.file" \
    510 	&& test "$[*]" != "X conftest.file $srcdir/configure"; then
    511 
    512 	# If neither matched, then we have a broken ls.  This can happen
    513 	# if, for instance, CONFIG_SHELL is bash and it inherits a
    514 	# broken ls alias from the environment.  This has actually
    515 	# happened.  Such a system could not be considered "sane".
    516 	AC_MSG_ERROR([ls -t appears to fail.  Make sure there is not a broken
    517   alias in your environment])
    518      fi
    519      if test "$[2]" = conftest.file || test $am_try -eq 2; then
    520        break
    521      fi
    522      # Just in case.
    523      sleep 1
    524      am_has_slept=yes
    525    done
    526    test "$[2]" = conftest.file
    527    )
    528 then
    529    # Ok.
    530    :
    531 else
    532    AC_MSG_ERROR([newly created file is older than distributed files!
    533 Check your system clock])
    534 fi
    535 AC_MSG_RESULT([yes])
    536 # If we didn't sleep, we still need to ensure time stamps of config.status and
    537 # generated files are strictly newer.
    538 am_sleep_pid=
    539 if grep 'slept: no' conftest.file >/dev/null 2>&1; then
    540   ( sleep 1 ) &
    541   am_sleep_pid=$!
    542 fi
    543 AC_CONFIG_COMMANDS_PRE(
    544   [AC_MSG_CHECKING([that generated files are newer than configure])
    545    if test -n "$am_sleep_pid"; then
    546      # Hide warnings about reused PIDs.
    547      wait $am_sleep_pid 2>/dev/null
    548    fi
    549    AC_MSG_RESULT([done])])
    550 rm -f conftest.file
    551 ])
    552 
    553 # Copyright (C) 2009-2017 Free Software Foundation, Inc.
    554 #
    555 # This file is free software; the Free Software Foundation
    556 # gives unlimited permission to copy and/or distribute it,
    557 # with or without modifications, as long as this notice is preserved.
    558 
    559 # AM_SILENT_RULES([DEFAULT])
    560 # --------------------------
    561 # Enable less verbose build rules; with the default set to DEFAULT
    562 # ("yes" being less verbose, "no" or empty being verbose).
    563 AC_DEFUN([AM_SILENT_RULES],
    564 [AC_ARG_ENABLE([silent-rules], [dnl
    565 AS_HELP_STRING(
    566   [--enable-silent-rules],
    567   [less verbose build output (undo: "make V=1")])
    568 AS_HELP_STRING(
    569   [--disable-silent-rules],
    570   [verbose build output (undo: "make V=0")])dnl
    571 ])
    572 case $enable_silent_rules in @%:@ (((
    573   yes) AM_DEFAULT_VERBOSITY=0;;
    574    no) AM_DEFAULT_VERBOSITY=1;;
    575     *) AM_DEFAULT_VERBOSITY=m4_if([$1], [yes], [0], [1]);;
    576 esac
    577 dnl
    578 dnl A few 'make' implementations (e.g., NonStop OS and NextStep)
    579 dnl do not support nested variable expansions.
    580 dnl See automake bug#9928 and bug#10237.
    581 am_make=${MAKE-make}
    582 AC_CACHE_CHECK([whether $am_make supports nested variables],
    583    [am_cv_make_support_nested_variables],
    584    [if AS_ECHO([['TRUE=$(BAR$(V))
    585 BAR0=false
    586 BAR1=true
    587 V=1
    588 am__doit:
    589 	@$(TRUE)
    590 .PHONY: am__doit']]) | $am_make -f - >/dev/null 2>&1; then
    591   am_cv_make_support_nested_variables=yes
    592 else
    593   am_cv_make_support_nested_variables=no
    594 fi])
    595 if test $am_cv_make_support_nested_variables = yes; then
    596   dnl Using '$V' instead of '$(V)' breaks IRIX make.
    597   AM_V='$(V)'
    598   AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
    599 else
    600   AM_V=$AM_DEFAULT_VERBOSITY
    601   AM_DEFAULT_V=$AM_DEFAULT_VERBOSITY
    602 fi
    603 AC_SUBST([AM_V])dnl
    604 AM_SUBST_NOTMAKE([AM_V])dnl
    605 AC_SUBST([AM_DEFAULT_V])dnl
    606 AM_SUBST_NOTMAKE([AM_DEFAULT_V])dnl
    607 AC_SUBST([AM_DEFAULT_VERBOSITY])dnl
    608 AM_BACKSLASH='\'
    609 AC_SUBST([AM_BACKSLASH])dnl
    610 _AM_SUBST_NOTMAKE([AM_BACKSLASH])dnl
    611 ])
    612 
    613 # Copyright (C) 2001-2017 Free Software Foundation, Inc.
    614 #
    615 # This file is free software; the Free Software Foundation
    616 # gives unlimited permission to copy and/or distribute it,
    617 # with or without modifications, as long as this notice is preserved.
    618 
    619 # AM_PROG_INSTALL_STRIP
    620 # ---------------------
    621 # One issue with vendor 'install' (even GNU) is that you can't
    622 # specify the program used to strip binaries.  This is especially
    623 # annoying in cross-compiling environments, where the build's strip
    624 # is unlikely to handle the host's binaries.
    625 # Fortunately install-sh will honor a STRIPPROG variable, so we
    626 # always use install-sh in "make install-strip", and initialize
    627 # STRIPPROG with the value of the STRIP variable (set by the user).
    628 AC_DEFUN([AM_PROG_INSTALL_STRIP],
    629 [AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
    630 # Installed binaries are usually stripped using 'strip' when the user
    631 # run "make install-strip".  However 'strip' might not be the right
    632 # tool to use in cross-compilation environments, therefore Automake
    633 # will honor the 'STRIP' environment variable to overrule this program.
    634 dnl Don't test for $cross_compiling = yes, because it might be 'maybe'.
    635 if test "$cross_compiling" != no; then
    636   AC_CHECK_TOOL([STRIP], [strip], :)
    637 fi
    638 INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
    639 AC_SUBST([INSTALL_STRIP_PROGRAM])])
    640 
    641 # Copyright (C) 2006-2017 Free Software Foundation, Inc.
    642 #
    643 # This file is free software; the Free Software Foundation
    644 # gives unlimited permission to copy and/or distribute it,
    645 # with or without modifications, as long as this notice is preserved.
    646 
    647 # _AM_SUBST_NOTMAKE(VARIABLE)
    648 # ---------------------------
    649 # Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in.
    650 # This macro is traced by Automake.
    651 AC_DEFUN([_AM_SUBST_NOTMAKE])
    652 
    653 # AM_SUBST_NOTMAKE(VARIABLE)
    654 # --------------------------
    655 # Public sister of _AM_SUBST_NOTMAKE.
    656 AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
    657 
    658 # Check how to create a tarball.                            -*- Autoconf -*-
    659 
    660 # Copyright (C) 2004-2017 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_PROG_TAR(FORMAT)
    667 # --------------------
    668 # Check how to create a tarball in format FORMAT.
    669 # FORMAT should be one of 'v7', 'ustar', or 'pax'.
    670 #
    671 # Substitute a variable $(am__tar) that is a command
    672 # writing to stdout a FORMAT-tarball containing the directory
    673 # $tardir.
    674 #     tardir=directory && $(am__tar) > result.tar
    675 #
    676 # Substitute a variable $(am__untar) that extract such
    677 # a tarball read from stdin.
    678 #     $(am__untar) < result.tar
    679 #
    680 AC_DEFUN([_AM_PROG_TAR],
    681 [# Always define AMTAR for backward compatibility.  Yes, it's still used
    682 # in the wild :-(  We should find a proper way to deprecate it ...
    683 AC_SUBST([AMTAR], ['$${TAR-tar}'])
    684 
    685 # We'll loop over all known methods to create a tar archive until one works.
    686 _am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
    687 
    688 m4_if([$1], [v7],
    689   [am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'],
    690 
    691   [m4_case([$1],
    692     [ustar],
    693      [# The POSIX 1988 'ustar' format is defined with fixed-size fields.
    694       # There is notably a 21 bits limit for the UID and the GID.  In fact,
    695       # the 'pax' utility can hang on bigger UID/GID (see automake bug#8343
    696       # and bug#13588).
    697       am_max_uid=2097151 # 2^21 - 1
    698       am_max_gid=$am_max_uid
    699       # The $UID and $GID variables are not portable, so we need to resort
    700       # to the POSIX-mandated id(1) utility.  Errors in the 'id' calls
    701       # below are definitely unexpected, so allow the users to see them
    702       # (that is, avoid stderr redirection).
    703       am_uid=`id -u || echo unknown`
    704       am_gid=`id -g || echo unknown`
    705       AC_MSG_CHECKING([whether UID '$am_uid' is supported by ustar format])
    706       if test $am_uid -le $am_max_uid; then
    707          AC_MSG_RESULT([yes])
    708       else
    709          AC_MSG_RESULT([no])
    710          _am_tools=none
    711       fi
    712       AC_MSG_CHECKING([whether GID '$am_gid' is supported by ustar format])
    713       if test $am_gid -le $am_max_gid; then
    714          AC_MSG_RESULT([yes])
    715       else
    716         AC_MSG_RESULT([no])
    717         _am_tools=none
    718       fi],
    719 
    720   [pax],
    721     [],
    722 
    723   [m4_fatal([Unknown tar format])])
    724 
    725   AC_MSG_CHECKING([how to create a $1 tar archive])
    726 
    727   # Go ahead even if we have the value already cached.  We do so because we
    728   # need to set the values for the 'am__tar' and 'am__untar' variables.
    729   _am_tools=${am_cv_prog_tar_$1-$_am_tools}
    730 
    731   for _am_tool in $_am_tools; do
    732     case $_am_tool in
    733     gnutar)
    734       for _am_tar in tar gnutar gtar; do
    735         AM_RUN_LOG([$_am_tar --version]) && break
    736       done
    737       am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"'
    738       am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"'
    739       am__untar="$_am_tar -xf -"
    740       ;;
    741     plaintar)
    742       # Must skip GNU tar: if it does not support --format= it doesn't create
    743       # ustar tarball either.
    744       (tar --version) >/dev/null 2>&1 && continue
    745       am__tar='tar chf - "$$tardir"'
    746       am__tar_='tar chf - "$tardir"'
    747       am__untar='tar xf -'
    748       ;;
    749     pax)
    750       am__tar='pax -L -x $1 -w "$$tardir"'
    751       am__tar_='pax -L -x $1 -w "$tardir"'
    752       am__untar='pax -r'
    753       ;;
    754     cpio)
    755       am__tar='find "$$tardir" -print | cpio -o -H $1 -L'
    756       am__tar_='find "$tardir" -print | cpio -o -H $1 -L'
    757       am__untar='cpio -i -H $1 -d'
    758       ;;
    759     none)
    760       am__tar=false
    761       am__tar_=false
    762       am__untar=false
    763       ;;
    764     esac
    765 
    766     # If the value was cached, stop now.  We just wanted to have am__tar
    767     # and am__untar set.
    768     test -n "${am_cv_prog_tar_$1}" && break
    769 
    770     # tar/untar a dummy directory, and stop if the command works.
    771     rm -rf conftest.dir
    772     mkdir conftest.dir
    773     echo GrepMe > conftest.dir/file
    774     AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar])
    775     rm -rf conftest.dir
    776     if test -s conftest.tar; then
    777       AM_RUN_LOG([$am__untar <conftest.tar])
    778       AM_RUN_LOG([cat conftest.dir/file])
    779       grep GrepMe conftest.dir/file >/dev/null 2>&1 && break
    780     fi
    781   done
    782   rm -rf conftest.dir
    783 
    784   AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])
    785   AC_MSG_RESULT([$am_cv_prog_tar_$1])])
    786 
    787 AC_SUBST([am__tar])
    788 AC_SUBST([am__untar])
    789 ]) # _AM_PROG_TAR
    790 
    791 m4_include([../config/lead-dot.m4])
    792 m4_include([../config/override.m4])
    793