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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
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     38 m4_if([$1], [1.15.1], [],
     39       [AC_FATAL([Do not call $0, use AM_INIT_AUTOMAKE([$1]).])])dnl
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     41 
     42 # _AM_AUTOCONF_VERSION(VERSION)
     43 # -----------------------------
     44 # aclocal traces this macro to find the Autoconf version.
     45 # This is a private macro too.  Using m4_define simplifies
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     47 m4_define([_AM_AUTOCONF_VERSION], [])
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     49 # AM_SET_CURRENT_AUTOMAKE_VERSION
     50 # -------------------------------
     51 # Call AM_AUTOMAKE_VERSION and AM_AUTOMAKE_VERSION so they can be traced.
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     53 AC_DEFUN([AM_SET_CURRENT_AUTOMAKE_VERSION],
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     55 m4_ifndef([AC_AUTOCONF_VERSION],
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     57 _AM_AUTOCONF_VERSION(m4_defn([AC_AUTOCONF_VERSION]))])
     58 
     59 # Figure out how to run the assembler.                      -*- Autoconf -*-
     60 
     61 # Copyright (C) 2001-2017 Free Software Foundation, Inc.
     62 #
     63 # This file is free software; the Free Software Foundation
     64 # gives unlimited permission to copy and/or distribute it,
     65 # with or without modifications, as long as this notice is preserved.
     66 
     67 # AM_PROG_AS
     68 # ----------
     69 AC_DEFUN([AM_PROG_AS],
     70 [# By default we simply use the C compiler to build assembly code.
     71 AC_REQUIRE([AC_PROG_CC])
     72 test "${CCAS+set}" = set || CCAS=$CC
     73 test "${CCASFLAGS+set}" = set || CCASFLAGS=$CFLAGS
     74 AC_ARG_VAR([CCAS],      [assembler compiler command (defaults to CC)])
     75 AC_ARG_VAR([CCASFLAGS], [assembler compiler flags (defaults to CFLAGS)])
     76 _AM_IF_OPTION([no-dependencies],, [_AM_DEPENDENCIES([CCAS])])dnl
     77 ])
     78 
     79 # AM_AUX_DIR_EXPAND                                         -*- Autoconf -*-
     80 
     81 # Copyright (C) 2001-2017 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
     88 # $ac_aux_dir to '$srcdir/foo'.  In other projects, it is set to
     89 # '$srcdir', '$srcdir/..', or '$srcdir/../..'.
     90 #
     91 # Of course, Automake must honor this variable whenever it calls a
     92 # tool from the auxiliary directory.  The problem is that $srcdir (and
     93 # therefore $ac_aux_dir as well) can be either absolute or relative,
     94 # depending on how configure is run.  This is pretty annoying, since
     95 # it makes $ac_aux_dir quite unusable in subdirectories: in the top
     96 # source directory, any form will work fine, but in subdirectories a
     97 # relative path needs to be adjusted first.
     98 #
     99 # $ac_aux_dir/missing
    100 #    fails when called from a subdirectory if $ac_aux_dir is relative
    101 # $top_srcdir/$ac_aux_dir/missing
    102 #    fails if $ac_aux_dir is absolute,
    103 #    fails when called from a subdirectory in a VPATH build with
    104 #          a relative $ac_aux_dir
    105 #
    106 # The reason of the latter failure is that $top_srcdir and $ac_aux_dir
    107 # are both prefixed by $srcdir.  In an in-source build this is usually
    108 # harmless because $srcdir is '.', but things will broke when you
    109 # start a VPATH build or use an absolute $srcdir.
    110 #
    111 # So we could use something similar to $top_srcdir/$ac_aux_dir/missing,
    112 # iff we strip the leading $srcdir from $ac_aux_dir.  That would be:
    113 #   am_aux_dir='\$(top_srcdir)/'`expr "$ac_aux_dir" : "$srcdir//*\(.*\)"`
    114 # and then we would define $MISSING as
    115 #   MISSING="\${SHELL} $am_aux_dir/missing"
    116 # This will work as long as MISSING is not called from configure, because
    117 # unfortunately $(top_srcdir) has no meaning in configure.
    118 # However there are other variables, like CC, which are often used in
    119 # configure, and could therefore not use this "fixed" $ac_aux_dir.
    120 #
    121 # Another solution, used here, is to always expand $ac_aux_dir to an
    122 # absolute PATH.  The drawback is that using absolute paths prevent a
    123 # configured tree to be moved without reconfiguration.
    124 
    125 AC_DEFUN([AM_AUX_DIR_EXPAND],
    126 [AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT])dnl
    127 # Expand $ac_aux_dir to an absolute path.
    128 am_aux_dir=`cd "$ac_aux_dir" && pwd`
    129 ])
    130 
    131 # AM_CONDITIONAL                                            -*- Autoconf -*-
    132 
    133 # Copyright (C) 1997-2017 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
    151 if $2; then
    152   $1_TRUE=
    153   $1_FALSE='#'
    154 else
    155   $1_TRUE='#'
    156   $1_FALSE=
    157 fi
    158 AC_CONFIG_COMMANDS_PRE(
    159 [if test -z "${$1_TRUE}" && test -z "${$1_FALSE}"; then
    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) 1999-2017 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,
    173 # will think it sees a *use*, and therefore will trigger all it's
    174 # C support machinery.  Also note that it means that autoscan, seeing
    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".
    182 # We try a few techniques and use that to set a single cache variable.
    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
    193 
    194 m4_if([$1], [CC],   [depcc="$CC"   am_compiler_list=],
    195       [$1], [CXX],  [depcc="$CXX"  am_compiler_list=],
    196       [$1], [OBJC], [depcc="$OBJC" am_compiler_list='gcc3 gcc'],
    197       [$1], [OBJCXX], [depcc="$OBJCXX" am_compiler_list='gcc3 gcc'],
    198       [$1], [UPC],  [depcc="$UPC"  am_compiler_list=],
    199       [$1], [GCJ],  [depcc="$GCJ"  am_compiler_list='gcc3 gcc'],
    200                     [depcc="$$1"   am_compiler_list=])
    201 
    202 AC_CACHE_CHECK([dependency style of $depcc],
    203                [am_cv_$1_dependencies_compiler_type],
    204 [if test -z "$AMDEP_TRUE" && test -f "$am_depcomp"; then
    205   # We make a subdir and do the tests there.  Otherwise we can end up
    206   # making bogus files that we don't know about and never remove.  For
    207   # instance it was reported that on HP-UX the gcc test will end up
    208   # making a dummy file named 'D' -- because '-MD' means "put the output
    209   # in D".
    210   rm -rf conftest.dir
    211   mkdir conftest.dir
    212   # Copy depcomp to subdir because otherwise we won't find it if we're
    213   # using a relative directory.
    214   cp "$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) 1999-2017 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 
    362 # _AM_OUTPUT_DEPENDENCY_COMMANDS
    363 # ------------------------------
    364 AC_DEFUN([_AM_OUTPUT_DEPENDENCY_COMMANDS],
    365 [{
    366   # Older Autoconf quotes --file arguments for eval, but not when files
    367   # are listed without --file.  Let's play safe and only enable the eval
    368   # if we detect the quoting.
    369   case $CONFIG_FILES in
    370   *\'*) eval set x "$CONFIG_FILES" ;;
    371   *)   set x $CONFIG_FILES ;;
    372   esac
    373   shift
    374   for mf
    375   do
    376     # Strip MF so we end up with the name of the file.
    377     mf=`echo "$mf" | sed -e 's/:.*$//'`
    378     # Check whether this is an Automake generated Makefile or not.
    379     # We used to match only the files named 'Makefile.in', but
    380     # some people rename them; so instead we look at the file content.
    381     # Grep'ing the first line is not enough: some people post-process
    382     # each Makefile.in and add a new line on top of each file to say so.
    383     # Grep'ing the whole file is not good either: AIX grep has a line
    384     # limit of 2048, but all sed's we know have understand at least 4000.
    385     if sed -n 's,^#.*generated by automake.*,X,p' "$mf" | grep X >/dev/null 2>&1; then
    386       dirpart=`AS_DIRNAME("$mf")`
    387     else
    388       continue
    389     fi
    390     # Extract the definition of DEPDIR, am__include, and am__quote
    391     # from the Makefile without running 'make'.
    392     DEPDIR=`sed -n 's/^DEPDIR = //p' < "$mf"`
    393     test -z "$DEPDIR" && continue
    394     am__include=`sed -n 's/^am__include = //p' < "$mf"`
    395     test -z "$am__include" && continue
    396     am__quote=`sed -n 's/^am__quote = //p' < "$mf"`
    397     # Find all dependency output files, they are included files with
    398     # $(DEPDIR) in their names.  We invoke sed twice because it is the
    399     # simplest approach to changing $(DEPDIR) to its actual value in the
    400     # expansion.
    401     for file in `sed -n "
    402       s/^$am__include $am__quote\(.*(DEPDIR).*\)$am__quote"'$/\1/p' <"$mf" | \
    403 	 sed -e 's/\$(DEPDIR)/'"$DEPDIR"'/g'`; do
    404       # Make sure the directory exists.
    405       test -f "$dirpart/$file" && continue
    406       fdir=`AS_DIRNAME(["$file"])`
    407       AS_MKDIR_P([$dirpart/$fdir])
    408       # echo "creating $dirpart/$file"
    409       echo '# dummy' > "$dirpart/$file"
    410     done
    411   done
    412 }
    413 ])# _AM_OUTPUT_DEPENDENCY_COMMANDS
    414 
    415 
    416 # AM_OUTPUT_DEPENDENCY_COMMANDS
    417 # -----------------------------
    418 # This macro should only be invoked once -- use via AC_REQUIRE.
    419 #
    420 # This code is only required when automatic dependency tracking
    421 # is enabled.  FIXME.  This creates each '.P' file that we will
    422 # need in order to bootstrap the dependency handling code.
    423 AC_DEFUN([AM_OUTPUT_DEPENDENCY_COMMANDS],
    424 [AC_CONFIG_COMMANDS([depfiles],
    425      [test x"$AMDEP_TRUE" != x"" || _AM_OUTPUT_DEPENDENCY_COMMANDS],
    426      [AMDEP_TRUE="$AMDEP_TRUE" ac_aux_dir="$ac_aux_dir"])
    427 ])
    428 
    429 # Do all the work for Automake.                             -*- Autoconf -*-
    430 
    431 # Copyright (C) 1996-2017 Free Software Foundation, Inc.
    432 #
    433 # This file is free software; the Free Software Foundation
    434 # gives unlimited permission to copy and/or distribute it,
    435 # with or without modifications, as long as this notice is preserved.
    436 
    437 # This macro actually does too much.  Some checks are only needed if
    438 # your package does certain things.  But this isn't really a big deal.
    439 
    440 dnl Redefine AC_PROG_CC to automatically invoke _AM_PROG_CC_C_O.
    441 m4_define([AC_PROG_CC],
    442 m4_defn([AC_PROG_CC])
    443 [_AM_PROG_CC_C_O
    444 ])
    445 
    446 # AM_INIT_AUTOMAKE(PACKAGE, VERSION, [NO-DEFINE])
    447 # AM_INIT_AUTOMAKE([OPTIONS])
    448 # -----------------------------------------------
    449 # The call with PACKAGE and VERSION arguments is the old style
    450 # call (pre autoconf-2.50), which is being phased out.  PACKAGE
    451 # and VERSION should now be passed to AC_INIT and removed from
    452 # the call to AM_INIT_AUTOMAKE.
    453 # We support both call styles for the transition.  After
    454 # the next Automake release, Autoconf can make the AC_INIT
    455 # arguments mandatory, and then we can depend on a new Autoconf
    456 # release and drop the old call support.
    457 AC_DEFUN([AM_INIT_AUTOMAKE],
    458 [AC_PREREQ([2.65])dnl
    459 dnl Autoconf wants to disallow AM_ names.  We explicitly allow
    460 dnl the ones we care about.
    461 m4_pattern_allow([^AM_[A-Z]+FLAGS$])dnl
    462 AC_REQUIRE([AM_SET_CURRENT_AUTOMAKE_VERSION])dnl
    463 AC_REQUIRE([AC_PROG_INSTALL])dnl
    464 if test "`cd $srcdir && pwd`" != "`pwd`"; then
    465   # Use -I$(srcdir) only when $(srcdir) != ., so that make's output
    466   # is not polluted with repeated "-I."
    467   AC_SUBST([am__isrc], [' -I$(srcdir)'])_AM_SUBST_NOTMAKE([am__isrc])dnl
    468   # test to see if srcdir already configured
    469   if test -f $srcdir/config.status; then
    470     AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
    471   fi
    472 fi
    473 
    474 # test whether we have cygpath
    475 if test -z "$CYGPATH_W"; then
    476   if (cygpath --version) >/dev/null 2>/dev/null; then
    477     CYGPATH_W='cygpath -w'
    478   else
    479     CYGPATH_W=echo
    480   fi
    481 fi
    482 AC_SUBST([CYGPATH_W])
    483 
    484 # Define the identity of the package.
    485 dnl Distinguish between old-style and new-style calls.
    486 m4_ifval([$2],
    487 [AC_DIAGNOSE([obsolete],
    488              [$0: two- and three-arguments forms are deprecated.])
    489 m4_ifval([$3], [_AM_SET_OPTION([no-define])])dnl
    490  AC_SUBST([PACKAGE], [$1])dnl
    491  AC_SUBST([VERSION], [$2])],
    492 [_AM_SET_OPTIONS([$1])dnl
    493 dnl Diagnose old-style AC_INIT with new-style AM_AUTOMAKE_INIT.
    494 m4_if(
    495   m4_ifdef([AC_PACKAGE_NAME], [ok]):m4_ifdef([AC_PACKAGE_VERSION], [ok]),
    496   [ok:ok],,
    497   [m4_fatal([AC_INIT should be called with package and version arguments])])dnl
    498  AC_SUBST([PACKAGE], ['AC_PACKAGE_TARNAME'])dnl
    499  AC_SUBST([VERSION], ['AC_PACKAGE_VERSION'])])dnl
    500 
    501 _AM_IF_OPTION([no-define],,
    502 [AC_DEFINE_UNQUOTED([PACKAGE], ["$PACKAGE"], [Name of package])
    503  AC_DEFINE_UNQUOTED([VERSION], ["$VERSION"], [Version number of package])])dnl
    504 
    505 # Some tools Automake needs.
    506 AC_REQUIRE([AM_SANITY_CHECK])dnl
    507 AC_REQUIRE([AC_ARG_PROGRAM])dnl
    508 AM_MISSING_PROG([ACLOCAL], [aclocal-${am__api_version}])
    509 AM_MISSING_PROG([AUTOCONF], [autoconf])
    510 AM_MISSING_PROG([AUTOMAKE], [automake-${am__api_version}])
    511 AM_MISSING_PROG([AUTOHEADER], [autoheader])
    512 AM_MISSING_PROG([MAKEINFO], [makeinfo])
    513 AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
    514 AC_REQUIRE([AM_PROG_INSTALL_STRIP])dnl
    515 AC_REQUIRE([AC_PROG_MKDIR_P])dnl
    516 # For better backward compatibility.  To be removed once Automake 1.9.x
    517 # dies out for good.  For more background, see:
    518 # <http://lists.gnu.org/archive/html/automake/2012-07/msg00001.html>
    519 # <http://lists.gnu.org/archive/html/automake/2012-07/msg00014.html>
    520 AC_SUBST([mkdir_p], ['$(MKDIR_P)'])
    521 # We need awk for the "check" target (and possibly the TAP driver).  The
    522 # system "awk" is bad on some platforms.
    523 AC_REQUIRE([AC_PROG_AWK])dnl
    524 AC_REQUIRE([AC_PROG_MAKE_SET])dnl
    525 AC_REQUIRE([AM_SET_LEADING_DOT])dnl
    526 _AM_IF_OPTION([tar-ustar], [_AM_PROG_TAR([ustar])],
    527 	      [_AM_IF_OPTION([tar-pax], [_AM_PROG_TAR([pax])],
    528 			     [_AM_PROG_TAR([v7])])])
    529 _AM_IF_OPTION([no-dependencies],,
    530 [AC_PROVIDE_IFELSE([AC_PROG_CC],
    531 		  [_AM_DEPENDENCIES([CC])],
    532 		  [m4_define([AC_PROG_CC],
    533 			     m4_defn([AC_PROG_CC])[_AM_DEPENDENCIES([CC])])])dnl
    534 AC_PROVIDE_IFELSE([AC_PROG_CXX],
    535 		  [_AM_DEPENDENCIES([CXX])],
    536 		  [m4_define([AC_PROG_CXX],
    537 			     m4_defn([AC_PROG_CXX])[_AM_DEPENDENCIES([CXX])])])dnl
    538 AC_PROVIDE_IFELSE([AC_PROG_OBJC],
    539 		  [_AM_DEPENDENCIES([OBJC])],
    540 		  [m4_define([AC_PROG_OBJC],
    541 			     m4_defn([AC_PROG_OBJC])[_AM_DEPENDENCIES([OBJC])])])dnl
    542 AC_PROVIDE_IFELSE([AC_PROG_OBJCXX],
    543 		  [_AM_DEPENDENCIES([OBJCXX])],
    544 		  [m4_define([AC_PROG_OBJCXX],
    545 			     m4_defn([AC_PROG_OBJCXX])[_AM_DEPENDENCIES([OBJCXX])])])dnl
    546 ])
    547 AC_REQUIRE([AM_SILENT_RULES])dnl
    548 dnl The testsuite driver may need to know about EXEEXT, so add the
    549 dnl 'am__EXEEXT' conditional if _AM_COMPILER_EXEEXT was seen.  This
    550 dnl macro is hooked onto _AC_COMPILER_EXEEXT early, see below.
    551 AC_CONFIG_COMMANDS_PRE(dnl
    552 [m4_provide_if([_AM_COMPILER_EXEEXT],
    553   [AM_CONDITIONAL([am__EXEEXT], [test -n "$EXEEXT"])])])dnl
    554 
    555 # POSIX will say in a future version that running "rm -f" with no argument
    556 # is OK; and we want to be able to make that assumption in our Makefile
    557 # recipes.  So use an aggressive probe to check that the usage we want is
    558 # actually supported "in the wild" to an acceptable degree.
    559 # See automake bug#10828.
    560 # To make any issue more visible, cause the running configure to be aborted
    561 # by default if the 'rm' program in use doesn't match our expectations; the
    562 # user can still override this though.
    563 if rm -f && rm -fr && rm -rf; then : OK; else
    564   cat >&2 <<'END'
    565 Oops!
    566 
    567 Your 'rm' program seems unable to run without file operands specified
    568 on the command line, even when the '-f' option is present.  This is contrary
    569 to the behaviour of most rm programs out there, and not conforming with
    570 the upcoming POSIX standard: <http://austingroupbugs.net/view.php?id=542>
    571 
    572 Please tell bug-automake (a] gnu.org about your system, including the value
    573 of your $PATH and any error possibly output before this message.  This
    574 can help us improve future automake versions.
    575 
    576 END
    577   if test x"$ACCEPT_INFERIOR_RM_PROGRAM" = x"yes"; then
    578     echo 'Configuration will proceed anyway, since you have set the' >&2
    579     echo 'ACCEPT_INFERIOR_RM_PROGRAM variable to "yes"' >&2
    580     echo >&2
    581   else
    582     cat >&2 <<'END'
    583 Aborting the configuration process, to ensure you take notice of the issue.
    584 
    585 You can download and install GNU coreutils to get an 'rm' implementation
    586 that behaves properly: <http://www.gnu.org/software/coreutils/>.
    587 
    588 If you want to complete the configuration process using your problematic
    589 'rm' anyway, export the environment variable ACCEPT_INFERIOR_RM_PROGRAM
    590 to "yes", and re-run configure.
    591 
    592 END
    593     AC_MSG_ERROR([Your 'rm' program is bad, sorry.])
    594   fi
    595 fi
    596 dnl The trailing newline in this macro's definition is deliberate, for
    597 dnl backward compatibility and to allow trailing 'dnl'-style comments
    598 dnl after the AM_INIT_AUTOMAKE invocation. See automake bug#16841.
    599 ])
    600 
    601 dnl Hook into '_AC_COMPILER_EXEEXT' early to learn its expansion.  Do not
    602 dnl add the conditional right here, as _AC_COMPILER_EXEEXT may be further
    603 dnl mangled by Autoconf and run in a shell conditional statement.
    604 m4_define([_AC_COMPILER_EXEEXT],
    605 m4_defn([_AC_COMPILER_EXEEXT])[m4_provide([_AM_COMPILER_EXEEXT])])
    606 
    607 # When config.status generates a header, we must update the stamp-h file.
    608 # This file resides in the same directory as the config header
    609 # that is generated.  The stamp files are numbered to have different names.
    610 
    611 # Autoconf calls _AC_AM_CONFIG_HEADER_HOOK (when defined) in the
    612 # loop where config.status creates the headers, so we can generate
    613 # our stamp files there.
    614 AC_DEFUN([_AC_AM_CONFIG_HEADER_HOOK],
    615 [# Compute $1's index in $config_headers.
    616 _am_arg=$1
    617 _am_stamp_count=1
    618 for _am_header in $config_headers :; do
    619   case $_am_header in
    620     $_am_arg | $_am_arg:* )
    621       break ;;
    622     * )
    623       _am_stamp_count=`expr $_am_stamp_count + 1` ;;
    624   esac
    625 done
    626 echo "timestamp for $_am_arg" >`AS_DIRNAME(["$_am_arg"])`/stamp-h[]$_am_stamp_count])
    627 
    628 # Copyright (C) 2001-2017 Free Software Foundation, Inc.
    629 #
    630 # This file is free software; the Free Software Foundation
    631 # gives unlimited permission to copy and/or distribute it,
    632 # with or without modifications, as long as this notice is preserved.
    633 
    634 # AM_PROG_INSTALL_SH
    635 # ------------------
    636 # Define $install_sh.
    637 AC_DEFUN([AM_PROG_INSTALL_SH],
    638 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
    639 if test x"${install_sh+set}" != xset; then
    640   case $am_aux_dir in
    641   *\ * | *\	*)
    642     install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
    643   *)
    644     install_sh="\${SHELL} $am_aux_dir/install-sh"
    645   esac
    646 fi
    647 AC_SUBST([install_sh])])
    648 
    649 # Add --enable-maintainer-mode option to configure.         -*- Autoconf -*-
    650 # From Jim Meyering
    651 
    652 # Copyright (C) 1996-2017 Free Software Foundation, Inc.
    653 #
    654 # This file is free software; the Free Software Foundation
    655 # gives unlimited permission to copy and/or distribute it,
    656 # with or without modifications, as long as this notice is preserved.
    657 
    658 # AM_MAINTAINER_MODE([DEFAULT-MODE])
    659 # ----------------------------------
    660 # Control maintainer-specific portions of Makefiles.
    661 # Default is to disable them, unless 'enable' is passed literally.
    662 # For symmetry, 'disable' may be passed as well.  Anyway, the user
    663 # can override the default with the --enable/--disable switch.
    664 AC_DEFUN([AM_MAINTAINER_MODE],
    665 [m4_case(m4_default([$1], [disable]),
    666        [enable], [m4_define([am_maintainer_other], [disable])],
    667        [disable], [m4_define([am_maintainer_other], [enable])],
    668        [m4_define([am_maintainer_other], [enable])
    669         m4_warn([syntax], [unexpected argument to AM@&t@_MAINTAINER_MODE: $1])])
    670 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
    671   dnl maintainer-mode's default is 'disable' unless 'enable' is passed
    672   AC_ARG_ENABLE([maintainer-mode],
    673     [AS_HELP_STRING([--]am_maintainer_other[-maintainer-mode],
    674       am_maintainer_other[ make rules and dependencies not useful
    675       (and sometimes confusing) to the casual installer])],
    676     [USE_MAINTAINER_MODE=$enableval],
    677     [USE_MAINTAINER_MODE=]m4_if(am_maintainer_other, [enable], [no], [yes]))
    678   AC_MSG_RESULT([$USE_MAINTAINER_MODE])
    679   AM_CONDITIONAL([MAINTAINER_MODE], [test $USE_MAINTAINER_MODE = yes])
    680   MAINT=$MAINTAINER_MODE_TRUE
    681   AC_SUBST([MAINT])dnl
    682 ]
    683 )
    684 
    685 # Check to see how 'make' treats includes.	            -*- Autoconf -*-
    686 
    687 # Copyright (C) 2001-2017 Free Software Foundation, Inc.
    688 #
    689 # This file is free software; the Free Software Foundation
    690 # gives unlimited permission to copy and/or distribute it,
    691 # with or without modifications, as long as this notice is preserved.
    692 
    693 # AM_MAKE_INCLUDE()
    694 # -----------------
    695 # Check to see how make treats includes.
    696 AC_DEFUN([AM_MAKE_INCLUDE],
    697 [am_make=${MAKE-make}
    698 cat > confinc << 'END'
    699 am__doit:
    700 	@echo this is the am__doit target
    701 .PHONY: am__doit
    702 END
    703 # If we don't find an include directive, just comment out the code.
    704 AC_MSG_CHECKING([for style of include used by $am_make])
    705 am__include="#"
    706 am__quote=
    707 _am_result=none
    708 # First try GNU make style include.
    709 echo "include confinc" > confmf
    710 # Ignore all kinds of additional output from 'make'.
    711 case `$am_make -s -f confmf 2> /dev/null` in #(
    712 *the\ am__doit\ target*)
    713   am__include=include
    714   am__quote=
    715   _am_result=GNU
    716   ;;
    717 esac
    718 # Now try BSD make style include.
    719 if test "$am__include" = "#"; then
    720    echo '.include "confinc"' > confmf
    721    case `$am_make -s -f confmf 2> /dev/null` in #(
    722    *the\ am__doit\ target*)
    723      am__include=.include
    724      am__quote="\""
    725      _am_result=BSD
    726      ;;
    727    esac
    728 fi
    729 AC_SUBST([am__include])
    730 AC_SUBST([am__quote])
    731 AC_MSG_RESULT([$_am_result])
    732 rm -f confinc confmf
    733 ])
    734 
    735 # Fake the existence of programs that GNU maintainers use.  -*- Autoconf -*-
    736 
    737 # Copyright (C) 1997-2017 Free Software Foundation, Inc.
    738 #
    739 # This file is free software; the Free Software Foundation
    740 # gives unlimited permission to copy and/or distribute it,
    741 # with or without modifications, as long as this notice is preserved.
    742 
    743 # AM_MISSING_PROG(NAME, PROGRAM)
    744 # ------------------------------
    745 AC_DEFUN([AM_MISSING_PROG],
    746 [AC_REQUIRE([AM_MISSING_HAS_RUN])
    747 $1=${$1-"${am_missing_run}$2"}
    748 AC_SUBST($1)])
    749 
    750 # AM_MISSING_HAS_RUN
    751 # ------------------
    752 # Define MISSING if not defined so far and test if it is modern enough.
    753 # If it is, set am_missing_run to use it, otherwise, to nothing.
    754 AC_DEFUN([AM_MISSING_HAS_RUN],
    755 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
    756 AC_REQUIRE_AUX_FILE([missing])dnl
    757 if test x"${MISSING+set}" != xset; then
    758   case $am_aux_dir in
    759   *\ * | *\	*)
    760     MISSING="\${SHELL} \"$am_aux_dir/missing\"" ;;
    761   *)
    762     MISSING="\${SHELL} $am_aux_dir/missing" ;;
    763   esac
    764 fi
    765 # Use eval to expand $SHELL
    766 if eval "$MISSING --is-lightweight"; then
    767   am_missing_run="$MISSING "
    768 else
    769   am_missing_run=
    770   AC_MSG_WARN(['missing' script is too old or missing])
    771 fi
    772 ])
    773 
    774 # Helper functions for option handling.                     -*- Autoconf -*-
    775 
    776 # Copyright (C) 2001-2017 Free Software Foundation, Inc.
    777 #
    778 # This file is free software; the Free Software Foundation
    779 # gives unlimited permission to copy and/or distribute it,
    780 # with or without modifications, as long as this notice is preserved.
    781 
    782 # _AM_MANGLE_OPTION(NAME)
    783 # -----------------------
    784 AC_DEFUN([_AM_MANGLE_OPTION],
    785 [[_AM_OPTION_]m4_bpatsubst($1, [[^a-zA-Z0-9_]], [_])])
    786 
    787 # _AM_SET_OPTION(NAME)
    788 # --------------------
    789 # Set option NAME.  Presently that only means defining a flag for this option.
    790 AC_DEFUN([_AM_SET_OPTION],
    791 [m4_define(_AM_MANGLE_OPTION([$1]), [1])])
    792 
    793 # _AM_SET_OPTIONS(OPTIONS)
    794 # ------------------------
    795 # OPTIONS is a space-separated list of Automake options.
    796 AC_DEFUN([_AM_SET_OPTIONS],
    797 [m4_foreach_w([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])])
    798 
    799 # _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET])
    800 # -------------------------------------------
    801 # Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
    802 AC_DEFUN([_AM_IF_OPTION],
    803 [m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])
    804 
    805 # Copyright (C) 1999-2017 Free Software Foundation, Inc.
    806 #
    807 # This file is free software; the Free Software Foundation
    808 # gives unlimited permission to copy and/or distribute it,
    809 # with or without modifications, as long as this notice is preserved.
    810 
    811 # _AM_PROG_CC_C_O
    812 # ---------------
    813 # Like AC_PROG_CC_C_O, but changed for automake.  We rewrite AC_PROG_CC
    814 # to automatically call this.
    815 AC_DEFUN([_AM_PROG_CC_C_O],
    816 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
    817 AC_REQUIRE_AUX_FILE([compile])dnl
    818 AC_LANG_PUSH([C])dnl
    819 AC_CACHE_CHECK(
    820   [whether $CC understands -c and -o together],
    821   [am_cv_prog_cc_c_o],
    822   [AC_LANG_CONFTEST([AC_LANG_PROGRAM([])])
    823   # Make sure it works both with $CC and with simple cc.
    824   # Following AC_PROG_CC_C_O, we do the test twice because some
    825   # compilers refuse to overwrite an existing .o file with -o,
    826   # though they will create one.
    827   am_cv_prog_cc_c_o=yes
    828   for am_i in 1 2; do
    829     if AM_RUN_LOG([$CC -c conftest.$ac_ext -o conftest2.$ac_objext]) \
    830          && test -f conftest2.$ac_objext; then
    831       : OK
    832     else
    833       am_cv_prog_cc_c_o=no
    834       break
    835     fi
    836   done
    837   rm -f core conftest*
    838   unset am_i])
    839 if test "$am_cv_prog_cc_c_o" != yes; then
    840    # Losing compiler, so override with the script.
    841    # FIXME: It is wrong to rewrite CC.
    842    # But if we don't then we get into trouble of one sort or another.
    843    # A longer-term fix would be to have automake use am__CC in this case,
    844    # and then we could set am__CC="\$(top_srcdir)/compile \$(CC)"
    845    CC="$am_aux_dir/compile $CC"
    846 fi
    847 AC_LANG_POP([C])])
    848 
    849 # For backward compatibility.
    850 AC_DEFUN_ONCE([AM_PROG_CC_C_O], [AC_REQUIRE([AC_PROG_CC])])
    851 
    852 # Copyright (C) 2001-2017 Free Software Foundation, Inc.
    853 #
    854 # This file is free software; the Free Software Foundation
    855 # gives unlimited permission to copy and/or distribute it,
    856 # with or without modifications, as long as this notice is preserved.
    857 
    858 # AM_RUN_LOG(COMMAND)
    859 # -------------------
    860 # Run COMMAND, save the exit status in ac_status, and log it.
    861 # (This has been adapted from Autoconf's _AC_RUN_LOG macro.)
    862 AC_DEFUN([AM_RUN_LOG],
    863 [{ echo "$as_me:$LINENO: $1" >&AS_MESSAGE_LOG_FD
    864    ($1) >&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD
    865    ac_status=$?
    866    echo "$as_me:$LINENO: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
    867    (exit $ac_status); }])
    868 
    869 # Check to make sure that the build environment is sane.    -*- Autoconf -*-
    870 
    871 # Copyright (C) 1996-2017 Free Software Foundation, Inc.
    872 #
    873 # This file is free software; the Free Software Foundation
    874 # gives unlimited permission to copy and/or distribute it,
    875 # with or without modifications, as long as this notice is preserved.
    876 
    877 # AM_SANITY_CHECK
    878 # ---------------
    879 AC_DEFUN([AM_SANITY_CHECK],
    880 [AC_MSG_CHECKING([whether build environment is sane])
    881 # Reject unsafe characters in $srcdir or the absolute working directory
    882 # name.  Accept space and tab only in the latter.
    883 am_lf='
    884 '
    885 case `pwd` in
    886   *[[\\\"\#\$\&\'\`$am_lf]]*)
    887     AC_MSG_ERROR([unsafe absolute working directory name]);;
    888 esac
    889 case $srcdir in
    890   *[[\\\"\#\$\&\'\`$am_lf\ \	]]*)
    891     AC_MSG_ERROR([unsafe srcdir value: '$srcdir']);;
    892 esac
    893 
    894 # Do 'set' in a subshell so we don't clobber the current shell's
    895 # arguments.  Must try -L first in case configure is actually a
    896 # symlink; some systems play weird games with the mod time of symlinks
    897 # (eg FreeBSD returns the mod time of the symlink's containing
    898 # directory).
    899 if (
    900    am_has_slept=no
    901    for am_try in 1 2; do
    902      echo "timestamp, slept: $am_has_slept" > conftest.file
    903      set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
    904      if test "$[*]" = "X"; then
    905 	# -L didn't work.
    906 	set X `ls -t "$srcdir/configure" conftest.file`
    907      fi
    908      if test "$[*]" != "X $srcdir/configure conftest.file" \
    909 	&& test "$[*]" != "X conftest.file $srcdir/configure"; then
    910 
    911 	# If neither matched, then we have a broken ls.  This can happen
    912 	# if, for instance, CONFIG_SHELL is bash and it inherits a
    913 	# broken ls alias from the environment.  This has actually
    914 	# happened.  Such a system could not be considered "sane".
    915 	AC_MSG_ERROR([ls -t appears to fail.  Make sure there is not a broken
    916   alias in your environment])
    917      fi
    918      if test "$[2]" = conftest.file || test $am_try -eq 2; then
    919        break
    920      fi
    921      # Just in case.
    922      sleep 1
    923      am_has_slept=yes
    924    done
    925    test "$[2]" = conftest.file
    926    )
    927 then
    928    # Ok.
    929    :
    930 else
    931    AC_MSG_ERROR([newly created file is older than distributed files!
    932 Check your system clock])
    933 fi
    934 AC_MSG_RESULT([yes])
    935 # If we didn't sleep, we still need to ensure time stamps of config.status and
    936 # generated files are strictly newer.
    937 am_sleep_pid=
    938 if grep 'slept: no' conftest.file >/dev/null 2>&1; then
    939   ( sleep 1 ) &
    940   am_sleep_pid=$!
    941 fi
    942 AC_CONFIG_COMMANDS_PRE(
    943   [AC_MSG_CHECKING([that generated files are newer than configure])
    944    if test -n "$am_sleep_pid"; then
    945      # Hide warnings about reused PIDs.
    946      wait $am_sleep_pid 2>/dev/null
    947    fi
    948    AC_MSG_RESULT([done])])
    949 rm -f conftest.file
    950 ])
    951 
    952 # Copyright (C) 2009-2017 Free Software Foundation, Inc.
    953 #
    954 # This file is free software; the Free Software Foundation
    955 # gives unlimited permission to copy and/or distribute it,
    956 # with or without modifications, as long as this notice is preserved.
    957 
    958 # AM_SILENT_RULES([DEFAULT])
    959 # --------------------------
    960 # Enable less verbose build rules; with the default set to DEFAULT
    961 # ("yes" being less verbose, "no" or empty being verbose).
    962 AC_DEFUN([AM_SILENT_RULES],
    963 [AC_ARG_ENABLE([silent-rules], [dnl
    964 AS_HELP_STRING(
    965   [--enable-silent-rules],
    966   [less verbose build output (undo: "make V=1")])
    967 AS_HELP_STRING(
    968   [--disable-silent-rules],
    969   [verbose build output (undo: "make V=0")])dnl
    970 ])
    971 case $enable_silent_rules in @%:@ (((
    972   yes) AM_DEFAULT_VERBOSITY=0;;
    973    no) AM_DEFAULT_VERBOSITY=1;;
    974     *) AM_DEFAULT_VERBOSITY=m4_if([$1], [yes], [0], [1]);;
    975 esac
    976 dnl
    977 dnl A few 'make' implementations (e.g., NonStop OS and NextStep)
    978 dnl do not support nested variable expansions.
    979 dnl See automake bug#9928 and bug#10237.
    980 am_make=${MAKE-make}
    981 AC_CACHE_CHECK([whether $am_make supports nested variables],
    982    [am_cv_make_support_nested_variables],
    983    [if AS_ECHO([['TRUE=$(BAR$(V))
    984 BAR0=false
    985 BAR1=true
    986 V=1
    987 am__doit:
    988 	@$(TRUE)
    989 .PHONY: am__doit']]) | $am_make -f - >/dev/null 2>&1; then
    990   am_cv_make_support_nested_variables=yes
    991 else
    992   am_cv_make_support_nested_variables=no
    993 fi])
    994 if test $am_cv_make_support_nested_variables = yes; then
    995   dnl Using '$V' instead of '$(V)' breaks IRIX make.
    996   AM_V='$(V)'
    997   AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
    998 else
    999   AM_V=$AM_DEFAULT_VERBOSITY
   1000   AM_DEFAULT_V=$AM_DEFAULT_VERBOSITY
   1001 fi
   1002 AC_SUBST([AM_V])dnl
   1003 AM_SUBST_NOTMAKE([AM_V])dnl
   1004 AC_SUBST([AM_DEFAULT_V])dnl
   1005 AM_SUBST_NOTMAKE([AM_DEFAULT_V])dnl
   1006 AC_SUBST([AM_DEFAULT_VERBOSITY])dnl
   1007 AM_BACKSLASH='\'
   1008 AC_SUBST([AM_BACKSLASH])dnl
   1009 _AM_SUBST_NOTMAKE([AM_BACKSLASH])dnl
   1010 ])
   1011 
   1012 # Copyright (C) 2001-2017 Free Software Foundation, Inc.
   1013 #
   1014 # This file is free software; the Free Software Foundation
   1015 # gives unlimited permission to copy and/or distribute it,
   1016 # with or without modifications, as long as this notice is preserved.
   1017 
   1018 # AM_PROG_INSTALL_STRIP
   1019 # ---------------------
   1020 # One issue with vendor 'install' (even GNU) is that you can't
   1021 # specify the program used to strip binaries.  This is especially
   1022 # annoying in cross-compiling environments, where the build's strip
   1023 # is unlikely to handle the host's binaries.
   1024 # Fortunately install-sh will honor a STRIPPROG variable, so we
   1025 # always use install-sh in "make install-strip", and initialize
   1026 # STRIPPROG with the value of the STRIP variable (set by the user).
   1027 AC_DEFUN([AM_PROG_INSTALL_STRIP],
   1028 [AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
   1029 # Installed binaries are usually stripped using 'strip' when the user
   1030 # run "make install-strip".  However 'strip' might not be the right
   1031 # tool to use in cross-compilation environments, therefore Automake
   1032 # will honor the 'STRIP' environment variable to overrule this program.
   1033 dnl Don't test for $cross_compiling = yes, because it might be 'maybe'.
   1034 if test "$cross_compiling" != no; then
   1035   AC_CHECK_TOOL([STRIP], [strip], :)
   1036 fi
   1037 INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
   1038 AC_SUBST([INSTALL_STRIP_PROGRAM])])
   1039 
   1040 # Copyright (C) 2006-2017 Free Software Foundation, Inc.
   1041 #
   1042 # This file is free software; the Free Software Foundation
   1043 # gives unlimited permission to copy and/or distribute it,
   1044 # with or without modifications, as long as this notice is preserved.
   1045 
   1046 # _AM_SUBST_NOTMAKE(VARIABLE)
   1047 # ---------------------------
   1048 # Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in.
   1049 # This macro is traced by Automake.
   1050 AC_DEFUN([_AM_SUBST_NOTMAKE])
   1051 
   1052 # AM_SUBST_NOTMAKE(VARIABLE)
   1053 # --------------------------
   1054 # Public sister of _AM_SUBST_NOTMAKE.
   1055 AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
   1056 
   1057 # Check how to create a tarball.                            -*- Autoconf -*-
   1058 
   1059 # Copyright (C) 2004-2017 Free Software Foundation, Inc.
   1060 #
   1061 # This file is free software; the Free Software Foundation
   1062 # gives unlimited permission to copy and/or distribute it,
   1063 # with or without modifications, as long as this notice is preserved.
   1064 
   1065 # _AM_PROG_TAR(FORMAT)
   1066 # --------------------
   1067 # Check how to create a tarball in format FORMAT.
   1068 # FORMAT should be one of 'v7', 'ustar', or 'pax'.
   1069 #
   1070 # Substitute a variable $(am__tar) that is a command
   1071 # writing to stdout a FORMAT-tarball containing the directory
   1072 # $tardir.
   1073 #     tardir=directory && $(am__tar) > result.tar
   1074 #
   1075 # Substitute a variable $(am__untar) that extract such
   1076 # a tarball read from stdin.
   1077 #     $(am__untar) < result.tar
   1078 #
   1079 AC_DEFUN([_AM_PROG_TAR],
   1080 [# Always define AMTAR for backward compatibility.  Yes, it's still used
   1081 # in the wild :-(  We should find a proper way to deprecate it ...
   1082 AC_SUBST([AMTAR], ['$${TAR-tar}'])
   1083 
   1084 # We'll loop over all known methods to create a tar archive until one works.
   1085 _am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
   1086 
   1087 m4_if([$1], [v7],
   1088   [am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'],
   1089 
   1090   [m4_case([$1],
   1091     [ustar],
   1092      [# The POSIX 1988 'ustar' format is defined with fixed-size fields.
   1093       # There is notably a 21 bits limit for the UID and the GID.  In fact,
   1094       # the 'pax' utility can hang on bigger UID/GID (see automake bug#8343
   1095       # and bug#13588).
   1096       am_max_uid=2097151 # 2^21 - 1
   1097       am_max_gid=$am_max_uid
   1098       # The $UID and $GID variables are not portable, so we need to resort
   1099       # to the POSIX-mandated id(1) utility.  Errors in the 'id' calls
   1100       # below are definitely unexpected, so allow the users to see them
   1101       # (that is, avoid stderr redirection).
   1102       am_uid=`id -u || echo unknown`
   1103       am_gid=`id -g || echo unknown`
   1104       AC_MSG_CHECKING([whether UID '$am_uid' is supported by ustar format])
   1105       if test $am_uid -le $am_max_uid; then
   1106          AC_MSG_RESULT([yes])
   1107       else
   1108          AC_MSG_RESULT([no])
   1109          _am_tools=none
   1110       fi
   1111       AC_MSG_CHECKING([whether GID '$am_gid' is supported by ustar format])
   1112       if test $am_gid -le $am_max_gid; then
   1113          AC_MSG_RESULT([yes])
   1114       else
   1115         AC_MSG_RESULT([no])
   1116         _am_tools=none
   1117       fi],
   1118 
   1119   [pax],
   1120     [],
   1121 
   1122   [m4_fatal([Unknown tar format])])
   1123 
   1124   AC_MSG_CHECKING([how to create a $1 tar archive])
   1125 
   1126   # Go ahead even if we have the value already cached.  We do so because we
   1127   # need to set the values for the 'am__tar' and 'am__untar' variables.
   1128   _am_tools=${am_cv_prog_tar_$1-$_am_tools}
   1129 
   1130   for _am_tool in $_am_tools; do
   1131     case $_am_tool in
   1132     gnutar)
   1133       for _am_tar in tar gnutar gtar; do
   1134         AM_RUN_LOG([$_am_tar --version]) && break
   1135       done
   1136       am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"'
   1137       am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"'
   1138       am__untar="$_am_tar -xf -"
   1139       ;;
   1140     plaintar)
   1141       # Must skip GNU tar: if it does not support --format= it doesn't create
   1142       # ustar tarball either.
   1143       (tar --version) >/dev/null 2>&1 && continue
   1144       am__tar='tar chf - "$$tardir"'
   1145       am__tar_='tar chf - "$tardir"'
   1146       am__untar='tar xf -'
   1147       ;;
   1148     pax)
   1149       am__tar='pax -L -x $1 -w "$$tardir"'
   1150       am__tar_='pax -L -x $1 -w "$tardir"'
   1151       am__untar='pax -r'
   1152       ;;
   1153     cpio)
   1154       am__tar='find "$$tardir" -print | cpio -o -H $1 -L'
   1155       am__tar_='find "$tardir" -print | cpio -o -H $1 -L'
   1156       am__untar='cpio -i -H $1 -d'
   1157       ;;
   1158     none)
   1159       am__tar=false
   1160       am__tar_=false
   1161       am__untar=false
   1162       ;;
   1163     esac
   1164 
   1165     # If the value was cached, stop now.  We just wanted to have am__tar
   1166     # and am__untar set.
   1167     test -n "${am_cv_prog_tar_$1}" && break
   1168 
   1169     # tar/untar a dummy directory, and stop if the command works.
   1170     rm -rf conftest.dir
   1171     mkdir conftest.dir
   1172     echo GrepMe > conftest.dir/file
   1173     AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar])
   1174     rm -rf conftest.dir
   1175     if test -s conftest.tar; then
   1176       AM_RUN_LOG([$am__untar <conftest.tar])
   1177       AM_RUN_LOG([cat conftest.dir/file])
   1178       grep GrepMe conftest.dir/file >/dev/null 2>&1 && break
   1179     fi
   1180   done
   1181   rm -rf conftest.dir
   1182 
   1183   AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])
   1184   AC_MSG_RESULT([$am_cv_prog_tar_$1])])
   1185 
   1186 AC_SUBST([am__tar])
   1187 AC_SUBST([am__untar])
   1188 ]) # _AM_PROG_TAR
   1189 
   1190 m4_include([../config/acx.m4])
   1191 m4_include([../config/depstand.m4])
   1192 m4_include([../config/lead-dot.m4])
   1193 m4_include([../config/libstdc++-raw-cxx.m4])
   1194 m4_include([../config/multi.m4])
   1195 m4_include([../config/override.m4])
   1196 m4_include([../config/stdint.m4])
   1197 m4_include([../config/toolexeclibdir.m4])
   1198 m4_include([../config/warnings.m4])
   1199 m4_include([../ltoptions.m4])
   1200 m4_include([../ltsugar.m4])
   1201 m4_include([../ltversion.m4])
   1202 m4_include([../lt~obsolete.m4])
   1203 m4_include([acinclude.m4])
   1204