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aclocal.m4 (42132B)


      1 # generated automatically by aclocal 1.16.1 -*- Autoconf -*-
      2 
      3 # Copyright (C) 1996-2018 Free Software Foundation, Inc.
      4 
      5 # This file is free software; the Free Software Foundation
      6 # gives unlimited permission to copy and/or distribute it,
      7 # with or without modifications, as long as this notice is preserved.
      8 
      9 # This program is distributed in the hope that it will be useful,
     10 # but WITHOUT ANY WARRANTY, to the extent permitted by law; without
     11 # even the implied warranty of MERCHANTABILITY or FITNESS FOR A
     12 # PARTICULAR PURPOSE.
     13 
     14 m4_ifndef([AC_CONFIG_MACRO_DIRS], [m4_defun([_AM_CONFIG_MACRO_DIRS], [])m4_defun([AC_CONFIG_MACRO_DIRS], [_AM_CONFIG_MACRO_DIRS($@)])])
     15 m4_ifndef([AC_AUTOCONF_VERSION],
     16   [m4_copy([m4_DEFAGE_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) 2002-2018 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)
     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='1.16'
     36 dnl Some users find AM_AUTOMAKE_VERSION and mistake it for a way to
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     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],
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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 # AM_AUX_DIR_EXPAND                                         -*- 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.
     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) 1997-2018 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 # Copyright (C) 1999-2018 Free Software Foundation, Inc.
    145 #
    146 # This file is free software; the Free Software Foundation
    147 # gives unlimited permission to copy and/or distribute it,
    148 # with or without modifications, as long as this notice is preserved.
    149 
    150 
    151 # There are a few dirty hacks below to avoid letting 'AC_PROG_CC' be
    152 # written in clear, in which case automake, when reading aclocal.m4,
    153 # will think it sees a *use*, and therefore will trigger all it's
    154 # C support machinery.  Also note that it means that autoscan, seeing
    155 # CC etc. in the Makefile, will ask for an AC_PROG_CC use...
    156 
    157 
    158 # _AM_DEPENDENCIES(NAME)
    159 # ----------------------
    160 # See how the compiler implements dependency checking.
    161 # NAME is "CC", "CXX", "OBJC", "OBJCXX", "UPC", or "GJC".
    162 # We try a few techniques and use that to set a single cache variable.
    163 #
    164 # We don't AC_REQUIRE the corresponding AC_PROG_CC since the latter was
    165 # modified to invoke _AM_DEPENDENCIES(CC); we would have a circular
    166 # dependency, and given that the user is not expected to run this macro,
    167 # just rely on AC_PROG_CC.
    168 AC_DEFUN([_AM_DEPENDENCIES],
    169 [AC_REQUIRE([AM_SET_DEPDIR])dnl
    170 AC_REQUIRE([AM_OUTPUT_DEPENDENCY_COMMANDS])dnl
    171 AC_REQUIRE([AM_MAKE_INCLUDE])dnl
    172 AC_REQUIRE([AM_DEP_TRACK])dnl
    173 
    174 m4_if([$1], [CC],   [depcc="$CC"   am_compiler_list=],
    175       [$1], [CXX],  [depcc="$CXX"  am_compiler_list=],
    176       [$1], [OBJC], [depcc="$OBJC" am_compiler_list='gcc3 gcc'],
    177       [$1], [OBJCXX], [depcc="$OBJCXX" am_compiler_list='gcc3 gcc'],
    178       [$1], [UPC],  [depcc="$UPC"  am_compiler_list=],
    179       [$1], [GCJ],  [depcc="$GCJ"  am_compiler_list='gcc3 gcc'],
    180                     [depcc="$$1"   am_compiler_list=])
    181 
    182 AC_CACHE_CHECK([dependency style of $depcc],
    183                [am_cv_$1_dependencies_compiler_type],
    184 [if test -z "$AMDEP_TRUE" && test -f "$am_depcomp"; then
    185   # We make a subdir and do the tests there.  Otherwise we can end up
    186   # making bogus files that we don't know about and never remove.  For
    187   # instance it was reported that on HP-UX the gcc test will end up
    188   # making a dummy file named 'D' -- because '-MD' means "put the output
    189   # in D".
    190   rm -rf conftest.dir
    191   mkdir conftest.dir
    192   # Copy depcomp to subdir because otherwise we won't find it if we're
    193   # using a relative directory.
    194   cp "$am_depcomp" conftest.dir
    195   cd conftest.dir
    196   # We will build objects and dependencies in a subdirectory because
    197   # it helps to detect inapplicable dependency modes.  For instance
    198   # both Tru64's cc and ICC support -MD to output dependencies as a
    199   # side effect of compilation, but ICC will put the dependencies in
    200   # the current directory while Tru64 will put them in the object
    201   # directory.
    202   mkdir sub
    203 
    204   am_cv_$1_dependencies_compiler_type=none
    205   if test "$am_compiler_list" = ""; then
    206      am_compiler_list=`sed -n ['s/^#*\([a-zA-Z0-9]*\))$/\1/p'] < ./depcomp`
    207   fi
    208   am__universal=false
    209   m4_case([$1], [CC],
    210     [case " $depcc " in #(
    211      *\ -arch\ *\ -arch\ *) am__universal=true ;;
    212      esac],
    213     [CXX],
    214     [case " $depcc " in #(
    215      *\ -arch\ *\ -arch\ *) am__universal=true ;;
    216      esac])
    217 
    218   for depmode in $am_compiler_list; do
    219     # Setup a source with many dependencies, because some compilers
    220     # like to wrap large dependency lists on column 80 (with \), and
    221     # we should not choose a depcomp mode which is confused by this.
    222     #
    223     # We need to recreate these files for each test, as the compiler may
    224     # overwrite some of them when testing with obscure command lines.
    225     # This happens at least with the AIX C compiler.
    226     : > sub/conftest.c
    227     for i in 1 2 3 4 5 6; do
    228       echo '#include "conftst'$i'.h"' >> sub/conftest.c
    229       # Using ": > sub/conftst$i.h" creates only sub/conftst1.h with
    230       # Solaris 10 /bin/sh.
    231       echo '/* dummy */' > sub/conftst$i.h
    232     done
    233     echo "${am__include} ${am__quote}sub/conftest.Po${am__quote}" > confmf
    234 
    235     # We check with '-c' and '-o' for the sake of the "dashmstdout"
    236     # mode.  It turns out that the SunPro C++ compiler does not properly
    237     # handle '-M -o', and we need to detect this.  Also, some Intel
    238     # versions had trouble with output in subdirs.
    239     am__obj=sub/conftest.${OBJEXT-o}
    240     am__minus_obj="-o $am__obj"
    241     case $depmode in
    242     gcc)
    243       # This depmode causes a compiler race in universal mode.
    244       test "$am__universal" = false || continue
    245       ;;
    246     nosideeffect)
    247       # After this tag, mechanisms are not by side-effect, so they'll
    248       # only be used when explicitly requested.
    249       if test "x$enable_dependency_tracking" = xyes; then
    250 	continue
    251       else
    252 	break
    253       fi
    254       ;;
    255     msvc7 | msvc7msys | msvisualcpp | msvcmsys)
    256       # This compiler won't grok '-c -o', but also, the minuso test has
    257       # not run yet.  These depmodes are late enough in the game, and
    258       # so weak that their functioning should not be impacted.
    259       am__obj=conftest.${OBJEXT-o}
    260       am__minus_obj=
    261       ;;
    262     none) break ;;
    263     esac
    264     if depmode=$depmode \
    265        source=sub/conftest.c object=$am__obj \
    266        depfile=sub/conftest.Po tmpdepfile=sub/conftest.TPo \
    267        $SHELL ./depcomp $depcc -c $am__minus_obj sub/conftest.c \
    268          >/dev/null 2>conftest.err &&
    269        grep sub/conftst1.h sub/conftest.Po > /dev/null 2>&1 &&
    270        grep sub/conftst6.h sub/conftest.Po > /dev/null 2>&1 &&
    271        grep $am__obj sub/conftest.Po > /dev/null 2>&1 &&
    272        ${MAKE-make} -s -f confmf > /dev/null 2>&1; then
    273       # icc doesn't choke on unknown options, it will just issue warnings
    274       # or remarks (even with -Werror).  So we grep stderr for any message
    275       # that says an option was ignored or not supported.
    276       # When given -MP, icc 7.0 and 7.1 complain thusly:
    277       #   icc: Command line warning: ignoring option '-M'; no argument required
    278       # The diagnosis changed in icc 8.0:
    279       #   icc: Command line remark: option '-MP' not supported
    280       if (grep 'ignoring option' conftest.err ||
    281           grep 'not supported' conftest.err) >/dev/null 2>&1; then :; else
    282         am_cv_$1_dependencies_compiler_type=$depmode
    283         break
    284       fi
    285     fi
    286   done
    287 
    288   cd ..
    289   rm -rf conftest.dir
    290 else
    291   am_cv_$1_dependencies_compiler_type=none
    292 fi
    293 ])
    294 AC_SUBST([$1DEPMODE], [depmode=$am_cv_$1_dependencies_compiler_type])
    295 AM_CONDITIONAL([am__fastdep$1], [
    296   test "x$enable_dependency_tracking" != xno \
    297   && test "$am_cv_$1_dependencies_compiler_type" = gcc3])
    298 ])
    299 
    300 
    301 # AM_SET_DEPDIR
    302 # -------------
    303 # Choose a directory name for dependency files.
    304 # This macro is AC_REQUIREd in _AM_DEPENDENCIES.
    305 AC_DEFUN([AM_SET_DEPDIR],
    306 [AC_REQUIRE([AM_SET_LEADING_DOT])dnl
    307 AC_SUBST([DEPDIR], ["${am__leading_dot}deps"])dnl
    308 ])
    309 
    310 
    311 # AM_DEP_TRACK
    312 # ------------
    313 AC_DEFUN([AM_DEP_TRACK],
    314 [AC_ARG_ENABLE([dependency-tracking], [dnl
    315 AS_HELP_STRING(
    316   [--enable-dependency-tracking],
    317   [do not reject slow dependency extractors])
    318 AS_HELP_STRING(
    319   [--disable-dependency-tracking],
    320   [speeds up one-time build])])
    321 if test "x$enable_dependency_tracking" != xno; then
    322   am_depcomp="$ac_aux_dir/depcomp"
    323   AMDEPBACKSLASH='\'
    324   am__nodep='_no'
    325 fi
    326 AM_CONDITIONAL([AMDEP], [test "x$enable_dependency_tracking" != xno])
    327 AC_SUBST([AMDEPBACKSLASH])dnl
    328 _AM_SUBST_NOTMAKE([AMDEPBACKSLASH])dnl
    329 AC_SUBST([am__nodep])dnl
    330 _AM_SUBST_NOTMAKE([am__nodep])dnl
    331 ])
    332 
    333 # Generate code to set up dependency tracking.              -*- Autoconf -*-
    334 
    335 # Copyright (C) 1999-2018 Free Software Foundation, Inc.
    336 #
    337 # This file is free software; the Free Software Foundation
    338 # gives unlimited permission to copy and/or distribute it,
    339 # with or without modifications, as long as this notice is preserved.
    340 
    341 # _AM_OUTPUT_DEPENDENCY_COMMANDS
    342 # ------------------------------
    343 AC_DEFUN([_AM_OUTPUT_DEPENDENCY_COMMANDS],
    344 [{
    345   # Older Autoconf quotes --file arguments for eval, but not when files
    346   # are listed without --file.  Let's play safe and only enable the eval
    347   # if we detect the quoting.
    348   # TODO: see whether this extra hack can be removed once we start
    349   # requiring Autoconf 2.70 or later.
    350   AS_CASE([$CONFIG_FILES],
    351           [*\'*], [eval set x "$CONFIG_FILES"],
    352           [*], [set x $CONFIG_FILES])
    353   shift
    354   # Used to flag and report bootstrapping failures.
    355   am_rc=0
    356   for am_mf
    357   do
    358     # Strip MF so we end up with the name of the file.
    359     am_mf=`AS_ECHO(["$am_mf"]) | sed -e 's/:.*$//'`
    360     # Check whether this is an Automake generated Makefile which includes
    361     # dependency-tracking related rules and includes.
    362     # Grep'ing the whole file directly is not great: AIX grep has a line
    363     # limit of 2048, but all sed's we know have understand at least 4000.
    364     sed -n 's,^am--depfiles:.*,X,p' "$am_mf" | grep X >/dev/null 2>&1 \
    365       || continue
    366     am_dirpart=`AS_DIRNAME(["$am_mf"])`
    367     am_filepart=`AS_BASENAME(["$am_mf"])`
    368     AM_RUN_LOG([cd "$am_dirpart" \
    369       && sed -e '/# am--include-marker/d' "$am_filepart" \
    370         | $MAKE -f - am--depfiles]) || am_rc=$?
    371   done
    372   if test $am_rc -ne 0; then
    373     AC_MSG_FAILURE([Something went wrong bootstrapping makefile fragments
    374     for automatic dependency tracking.  Try re-running configure with the
    375     '--disable-dependency-tracking' option to at least be able to build
    376     the package (albeit without support for automatic dependency tracking).])
    377   fi
    378   AS_UNSET([am_dirpart])
    379   AS_UNSET([am_filepart])
    380   AS_UNSET([am_mf])
    381   AS_UNSET([am_rc])
    382   rm -f conftest-deps.mk
    383 }
    384 ])# _AM_OUTPUT_DEPENDENCY_COMMANDS
    385 
    386 
    387 # AM_OUTPUT_DEPENDENCY_COMMANDS
    388 # -----------------------------
    389 # This macro should only be invoked once -- use via AC_REQUIRE.
    390 #
    391 # This code is only required when automatic dependency tracking is enabled.
    392 # This creates each '.Po' and '.Plo' makefile fragment that we'll need in
    393 # order to bootstrap the dependency handling code.
    394 AC_DEFUN([AM_OUTPUT_DEPENDENCY_COMMANDS],
    395 [AC_CONFIG_COMMANDS([depfiles],
    396      [test x"$AMDEP_TRUE" != x"" || _AM_OUTPUT_DEPENDENCY_COMMANDS],
    397      [AMDEP_TRUE="$AMDEP_TRUE" MAKE="${MAKE-make}"])])
    398 
    399 # Do all the work for Automake.                             -*- Autoconf -*-
    400 
    401 # Copyright (C) 1996-2018 Free Software Foundation, Inc.
    402 #
    403 # This file is free software; the Free Software Foundation
    404 # gives unlimited permission to copy and/or distribute it,
    405 # with or without modifications, as long as this notice is preserved.
    406 
    407 # This macro actually does too much.  Some checks are only needed if
    408 # your package does certain things.  But this isn't really a big deal.
    409 
    410 dnl Redefine AC_PROG_CC to automatically invoke _AM_PROG_CC_C_O.
    411 m4_define([AC_PROG_CC],
    412 m4_defn([AC_PROG_CC])
    413 [_AM_PROG_CC_C_O
    414 ])
    415 
    416 # AM_INIT_AUTOMAKE(DEFAGE, VERSION, [NO-DEFINE])
    417 # AM_INIT_AUTOMAKE([OPTIONS])
    418 # -----------------------------------------------
    419 # The call with DEFAGE and VERSION arguments is the old style
    420 # call (pre autoconf-2.50), which is being phased out.  DEFAGE
    421 # and VERSION should now be passed to AC_INIT and removed from
    422 # the call to AM_INIT_AUTOMAKE.
    423 # We support both call styles for the transition.  After
    424 # the next Automake release, Autoconf can make the AC_INIT
    425 # arguments mandatory, and then we can depend on a new Autoconf
    426 # release and drop the old call support.
    427 AC_DEFUN([AM_INIT_AUTOMAKE],
    428 [AC_PREREQ([2.65])dnl
    429 dnl Autoconf wants to disallow AM_ names.  We explicitly allow
    430 dnl the ones we care about.
    431 m4_pattern_allow([^AM_[A-Z]+FLAGS$])dnl
    432 AC_REQUIRE([AM_SET_CURRENT_AUTOMAKE_VERSION])dnl
    433 AC_REQUIRE([AC_PROG_INSTALL])dnl
    434 if test "`cd $srcdir && pwd`" != "`pwd`"; then
    435   # Use -I$(srcdir) only when $(srcdir) != ., so that make's output
    436   # is not polluted with repeated "-I."
    437   AC_SUBST([am__isrc], [' -I$(srcdir)'])_AM_SUBST_NOTMAKE([am__isrc])dnl
    438   # test to see if srcdir already configured
    439   if test -f $srcdir/config.status; then
    440     AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
    441   fi
    442 fi
    443 
    444 # test whether we have cygpath
    445 if test -z "$CYGPATH_W"; then
    446   if (cygpath --version) >/dev/null 2>/dev/null; then
    447     CYGPATH_W='cygpath -w'
    448   else
    449     CYGPATH_W=echo
    450   fi
    451 fi
    452 AC_SUBST([CYGPATH_W])
    453 
    454 # Define the identity of the package.
    455 dnl Distinguish between old-style and new-style calls.
    456 m4_ifval([$2],
    457 [AC_DIAGNOSE([obsolete],
    458              [$0: two- and three-arguments forms are deprecated.])
    459 m4_ifval([$3], [_AM_SET_OPTION([no-define])])dnl
    460  AC_SUBST([DEFAGE], [$1])dnl
    461  AC_SUBST([VERSION], [$2])],
    462 [_AM_SET_OPTIONS([$1])dnl
    463 dnl Diagnose old-style AC_INIT with new-style AM_AUTOMAKE_INIT.
    464 m4_if(
    465   m4_ifdef([AC_DEFAGE_NAME], [ok]):m4_ifdef([AC_DEFAGE_VERSION], [ok]),
    466   [ok:ok],,
    467   [m4_fatal([AC_INIT should be called with package and version arguments])])dnl
    468  AC_SUBST([DEFAGE], ['AC_DEFAGE_TARNAME'])dnl
    469  AC_SUBST([VERSION], ['AC_DEFAGE_VERSION'])])dnl
    470 
    471 _AM_IF_OPTION([no-define],,
    472 [AC_DEFINE_UNQUOTED([DEFAGE], ["$DEFAGE"], [Name of package])
    473  AC_DEFINE_UNQUOTED([VERSION], ["$VERSION"], [Version number of package])])dnl
    474 
    475 # Some tools Automake needs.
    476 AC_REQUIRE([AM_SANITY_CHECK])dnl
    477 AC_REQUIRE([AC_ARG_PROGRAM])dnl
    478 AM_MISSING_PROG([ACLOCAL], [aclocal-${am__api_version}])
    479 AM_MISSING_PROG([AUTOCONF], [autoconf])
    480 AM_MISSING_PROG([AUTOMAKE], [automake-${am__api_version}])
    481 AM_MISSING_PROG([AUTOHEADER], [autoheader])
    482 AM_MISSING_PROG([MAKEINFO], [makeinfo])
    483 AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
    484 AC_REQUIRE([AM_PROG_INSTALL_STRIP])dnl
    485 AC_REQUIRE([AC_PROG_MKDIR_P])dnl
    486 # For better backward compatibility.  To be removed once Automake 1.9.x
    487 # dies out for good.  For more background, see:
    488 # <https://lists.gnu.org/archive/html/automake/2012-07/msg00001.html>
    489 # <https://lists.gnu.org/archive/html/automake/2012-07/msg00014.html>
    490 AC_SUBST([mkdir_p], ['$(MKDIR_P)'])
    491 # We need awk for the "check" target (and possibly the TAP driver).  The
    492 # system "awk" is bad on some platforms.
    493 AC_REQUIRE([AC_PROG_AWK])dnl
    494 AC_REQUIRE([AC_PROG_MAKE_SET])dnl
    495 AC_REQUIRE([AM_SET_LEADING_DOT])dnl
    496 _AM_IF_OPTION([tar-ustar], [_AM_PROG_TAR([ustar])],
    497 	      [_AM_IF_OPTION([tar-pax], [_AM_PROG_TAR([pax])],
    498 			     [_AM_PROG_TAR([v7])])])
    499 _AM_IF_OPTION([no-dependencies],,
    500 [AC_PROVIDE_IFELSE([AC_PROG_CC],
    501 		  [_AM_DEPENDENCIES([CC])],
    502 		  [m4_define([AC_PROG_CC],
    503 			     m4_defn([AC_PROG_CC])[_AM_DEPENDENCIES([CC])])])dnl
    504 AC_PROVIDE_IFELSE([AC_PROG_CXX],
    505 		  [_AM_DEPENDENCIES([CXX])],
    506 		  [m4_define([AC_PROG_CXX],
    507 			     m4_defn([AC_PROG_CXX])[_AM_DEPENDENCIES([CXX])])])dnl
    508 AC_PROVIDE_IFELSE([AC_PROG_OBJC],
    509 		  [_AM_DEPENDENCIES([OBJC])],
    510 		  [m4_define([AC_PROG_OBJC],
    511 			     m4_defn([AC_PROG_OBJC])[_AM_DEPENDENCIES([OBJC])])])dnl
    512 AC_PROVIDE_IFELSE([AC_PROG_OBJCXX],
    513 		  [_AM_DEPENDENCIES([OBJCXX])],
    514 		  [m4_define([AC_PROG_OBJCXX],
    515 			     m4_defn([AC_PROG_OBJCXX])[_AM_DEPENDENCIES([OBJCXX])])])dnl
    516 ])
    517 AC_REQUIRE([AM_SILENT_RULES])dnl
    518 dnl The testsuite driver may need to know about EXEEXT, so add the
    519 dnl 'am__EXEEXT' conditional if _AM_COMPILER_EXEEXT was seen.  This
    520 dnl macro is hooked onto _AC_COMPILER_EXEEXT early, see below.
    521 AC_CONFIG_COMMANDS_PRE(dnl
    522 [m4_provide_if([_AM_COMPILER_EXEEXT],
    523   [AM_CONDITIONAL([am__EXEEXT], [test -n "$EXEEXT"])])])dnl
    524 
    525 # POSIX will say in a future version that running "rm -f" with no argument
    526 # is OK; and we want to be able to make that assumption in our Makefile
    527 # recipes.  So use an aggressive probe to check that the usage we want is
    528 # actually supported "in the wild" to an acceptable degree.
    529 # See automake bug#10828.
    530 # To make any issue more visible, cause the running configure to be aborted
    531 # by default if the 'rm' program in use doesn't match our expectations; the
    532 # user can still override this though.
    533 if rm -f && rm -fr && rm -rf; then : OK; else
    534   cat >&2 <<'END'
    535 Oops!
    536 
    537 Your 'rm' program seems unable to run without file operands specified
    538 on the command line, even when the '-f' option is present.  This is contrary
    539 to the behaviour of most rm programs out there, and not conforming with
    540 the upcoming POSIX standard: <http://austingroupbugs.net/view.php?id=542>
    541 
    542 Please tell bug-automake@gnu.org about your system, including the value
    543 of your $PATH and any error possibly output before this message.  This
    544 can help us improve future automake versions.
    545 
    546 END
    547   if test x"$ACCEPT_INFERIOR_RM_PROGRAM" = x"yes"; then
    548     echo 'Configuration will proceed anyway, since you have set the' >&2
    549     echo 'ACCEPT_INFERIOR_RM_PROGRAM variable to "yes"' >&2
    550     echo >&2
    551   else
    552     cat >&2 <<'END'
    553 Aborting the configuration process, to ensure you take notice of the issue.
    554 
    555 You can download and install GNU coreutils to get an 'rm' implementation
    556 that behaves properly: <https://www.gnu.org/software/coreutils/>.
    557 
    558 If you want to complete the configuration process using your problematic
    559 'rm' anyway, export the environment variable ACCEPT_INFERIOR_RM_PROGRAM
    560 to "yes", and re-run configure.
    561 
    562 END
    563     AC_MSG_ERROR([Your 'rm' program is bad, sorry.])
    564   fi
    565 fi
    566 dnl The trailing newline in this macro's definition is deliberate, for
    567 dnl backward compatibility and to allow trailing 'dnl'-style comments
    568 dnl after the AM_INIT_AUTOMAKE invocation. See automake bug#16841.
    569 ])
    570 
    571 dnl Hook into '_AC_COMPILER_EXEEXT' early to learn its expansion.  Do not
    572 dnl add the conditional right here, as _AC_COMPILER_EXEEXT may be further
    573 dnl mangled by Autoconf and run in a shell conditional statement.
    574 m4_define([_AC_COMPILER_EXEEXT],
    575 m4_defn([_AC_COMPILER_EXEEXT])[m4_provide([_AM_COMPILER_EXEEXT])])
    576 
    577 # When config.status generates a header, we must update the stamp-h file.
    578 # This file resides in the same directory as the config header
    579 # that is generated.  The stamp files are numbered to have different names.
    580 
    581 # Autoconf calls _AC_AM_CONFIG_HEADER_HOOK (when defined) in the
    582 # loop where config.status creates the headers, so we can generate
    583 # our stamp files there.
    584 AC_DEFUN([_AC_AM_CONFIG_HEADER_HOOK],
    585 [# Compute $1's index in $config_headers.
    586 _am_arg=$1
    587 _am_stamp_count=1
    588 for _am_header in $config_headers :; do
    589   case $_am_header in
    590     $_am_arg | $_am_arg:* )
    591       break ;;
    592     * )
    593       _am_stamp_count=`expr $_am_stamp_count + 1` ;;
    594   esac
    595 done
    596 echo "timestamp for $_am_arg" >`AS_DIRNAME(["$_am_arg"])`/stamp-h[]$_am_stamp_count])
    597 
    598 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
    599 #
    600 # This file is free software; the Free Software Foundation
    601 # gives unlimited permission to copy and/or distribute it,
    602 # with or without modifications, as long as this notice is preserved.
    603 
    604 # AM_PROG_INSTALL_SH
    605 # ------------------
    606 # Define $install_sh.
    607 AC_DEFUN([AM_PROG_INSTALL_SH],
    608 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
    609 if test x"${install_sh+set}" != xset; then
    610   case $am_aux_dir in
    611   *\ * | *\	*)
    612     install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
    613   *)
    614     install_sh="\${SHELL} $am_aux_dir/install-sh"
    615   esac
    616 fi
    617 AC_SUBST([install_sh])])
    618 
    619 # Copyright (C) 2003-2018 Free Software Foundation, Inc.
    620 #
    621 # This file is free software; the Free Software Foundation
    622 # gives unlimited permission to copy and/or distribute it,
    623 # with or without modifications, as long as this notice is preserved.
    624 
    625 # Check whether the underlying file-system supports filenames
    626 # with a leading dot.  For instance MS-DOS doesn't.
    627 AC_DEFUN([AM_SET_LEADING_DOT],
    628 [rm -rf .tst 2>/dev/null
    629 mkdir .tst 2>/dev/null
    630 if test -d .tst; then
    631   am__leading_dot=.
    632 else
    633   am__leading_dot=_
    634 fi
    635 rmdir .tst 2>/dev/null
    636 AC_SUBST([am__leading_dot])])
    637 
    638 # Check to see how 'make' treats includes.	            -*- Autoconf -*-
    639 
    640 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
    641 #
    642 # This file is free software; the Free Software Foundation
    643 # gives unlimited permission to copy and/or distribute it,
    644 # with or without modifications, as long as this notice is preserved.
    645 
    646 # AM_MAKE_INCLUDE()
    647 # -----------------
    648 # Check whether make has an 'include' directive that can support all
    649 # the idioms we need for our automatic dependency tracking code.
    650 AC_DEFUN([AM_MAKE_INCLUDE],
    651 [AC_MSG_CHECKING([whether ${MAKE-make} supports the include directive])
    652 cat > confinc.mk << 'END'
    653 am__doit:
    654 	@echo this is the am__doit target >confinc.out
    655 .PHONY: am__doit
    656 END
    657 am__include="#"
    658 am__quote=
    659 # BSD make does it like this.
    660 echo '.include "confinc.mk" # ignored' > confmf.BSD
    661 # Other make implementations (GNU, Solaris 10, AIX) do it like this.
    662 echo 'include confinc.mk # ignored' > confmf.GNU
    663 _am_result=no
    664 for s in GNU BSD; do
    665   AM_RUN_LOG([${MAKE-make} -f confmf.$s && cat confinc.out])
    666   AS_CASE([$?:`cat confinc.out 2>/dev/null`],
    667       ['0:this is the am__doit target'],
    668       [AS_CASE([$s],
    669           [BSD], [am__include='.include' am__quote='"'],
    670           [am__include='include' am__quote=''])])
    671   if test "$am__include" != "#"; then
    672     _am_result="yes ($s style)"
    673     break
    674   fi
    675 done
    676 rm -f confinc.* confmf.*
    677 AC_MSG_RESULT([${_am_result}])
    678 AC_SUBST([am__include])])
    679 AC_SUBST([am__quote])])
    680 
    681 # Fake the existence of programs that GNU maintainers use.  -*- Autoconf -*-
    682 
    683 # Copyright (C) 1997-2018 Free Software Foundation, Inc.
    684 #
    685 # This file is free software; the Free Software Foundation
    686 # gives unlimited permission to copy and/or distribute it,
    687 # with or without modifications, as long as this notice is preserved.
    688 
    689 # AM_MISSING_PROG(NAME, PROGRAM)
    690 # ------------------------------
    691 AC_DEFUN([AM_MISSING_PROG],
    692 [AC_REQUIRE([AM_MISSING_HAS_RUN])
    693 $1=${$1-"${am_missing_run}$2"}
    694 AC_SUBST($1)])
    695 
    696 # AM_MISSING_HAS_RUN
    697 # ------------------
    698 # Define MISSING if not defined so far and test if it is modern enough.
    699 # If it is, set am_missing_run to use it, otherwise, to nothing.
    700 AC_DEFUN([AM_MISSING_HAS_RUN],
    701 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
    702 AC_REQUIRE_AUX_FILE([missing])dnl
    703 if test x"${MISSING+set}" != xset; then
    704   case $am_aux_dir in
    705   *\ * | *\	*)
    706     MISSING="\${SHELL} \"$am_aux_dir/missing\"" ;;
    707   *)
    708     MISSING="\${SHELL} $am_aux_dir/missing" ;;
    709   esac
    710 fi
    711 # Use eval to expand $SHELL
    712 if eval "$MISSING --is-lightweight"; then
    713   am_missing_run="$MISSING "
    714 else
    715   am_missing_run=
    716   AC_MSG_WARN(['missing' script is too old or missing])
    717 fi
    718 ])
    719 
    720 # Helper functions for option handling.                     -*- Autoconf -*-
    721 
    722 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
    723 #
    724 # This file is free software; the Free Software Foundation
    725 # gives unlimited permission to copy and/or distribute it,
    726 # with or without modifications, as long as this notice is preserved.
    727 
    728 # _AM_MANGLE_OPTION(NAME)
    729 # -----------------------
    730 AC_DEFUN([_AM_MANGLE_OPTION],
    731 [[_AM_OPTION_]m4_bpatsubst($1, [[^a-zA-Z0-9_]], [_])])
    732 
    733 # _AM_SET_OPTION(NAME)
    734 # --------------------
    735 # Set option NAME.  Presently that only means defining a flag for this option.
    736 AC_DEFUN([_AM_SET_OPTION],
    737 [m4_define(_AM_MANGLE_OPTION([$1]), [1])])
    738 
    739 # _AM_SET_OPTIONS(OPTIONS)
    740 # ------------------------
    741 # OPTIONS is a space-separated list of Automake options.
    742 AC_DEFUN([_AM_SET_OPTIONS],
    743 [m4_foreach_w([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])])
    744 
    745 # _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET])
    746 # -------------------------------------------
    747 # Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
    748 AC_DEFUN([_AM_IF_OPTION],
    749 [m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])
    750 
    751 # Copyright (C) 1999-2018 Free Software Foundation, Inc.
    752 #
    753 # This file is free software; the Free Software Foundation
    754 # gives unlimited permission to copy and/or distribute it,
    755 # with or without modifications, as long as this notice is preserved.
    756 
    757 # _AM_PROG_CC_C_O
    758 # ---------------
    759 # Like AC_PROG_CC_C_O, but changed for automake.  We rewrite AC_PROG_CC
    760 # to automatically call this.
    761 AC_DEFUN([_AM_PROG_CC_C_O],
    762 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
    763 AC_REQUIRE_AUX_FILE([compile])dnl
    764 AC_LANG_PUSH([C])dnl
    765 AC_CACHE_CHECK(
    766   [whether $CC understands -c and -o together],
    767   [am_cv_prog_cc_c_o],
    768   [AC_LANG_CONFTEST([AC_LANG_PROGRAM([])])
    769   # Make sure it works both with $CC and with simple cc.
    770   # Following AC_PROG_CC_C_O, we do the test twice because some
    771   # compilers refuse to overwrite an existing .o file with -o,
    772   # though they will create one.
    773   am_cv_prog_cc_c_o=yes
    774   for am_i in 1 2; do
    775     if AM_RUN_LOG([$CC -c conftest.$ac_ext -o conftest2.$ac_objext]) \
    776          && test -f conftest2.$ac_objext; then
    777       : OK
    778     else
    779       am_cv_prog_cc_c_o=no
    780       break
    781     fi
    782   done
    783   rm -f core conftest*
    784   unset am_i])
    785 if test "$am_cv_prog_cc_c_o" != yes; then
    786    # Losing compiler, so override with the script.
    787    # FIXME: It is wrong to rewrite CC.
    788    # But if we don't then we get into trouble of one sort or another.
    789    # A longer-term fix would be to have automake use am__CC in this case,
    790    # and then we could set am__CC="\$(top_srcdir)/compile \$(CC)"
    791    CC="$am_aux_dir/compile $CC"
    792 fi
    793 AC_LANG_POP([C])])
    794 
    795 # For backward compatibility.
    796 AC_DEFUN_ONCE([AM_PROG_CC_C_O], [AC_REQUIRE([AC_PROG_CC])])
    797 
    798 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
    799 #
    800 # This file is free software; the Free Software Foundation
    801 # gives unlimited permission to copy and/or distribute it,
    802 # with or without modifications, as long as this notice is preserved.
    803 
    804 # AM_RUN_LOG(COMMAND)
    805 # -------------------
    806 # Run COMMAND, save the exit status in ac_status, and log it.
    807 # (This has been adapted from Autoconf's _AC_RUN_LOG macro.)
    808 AC_DEFUN([AM_RUN_LOG],
    809 [{ echo "$as_me:$LINENO: $1" >&AS_MESSAGE_LOG_FD
    810    ($1) >&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD
    811    ac_status=$?
    812    echo "$as_me:$LINENO: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
    813    (exit $ac_status); }])
    814 
    815 # Check to make sure that the build environment is sane.    -*- Autoconf -*-
    816 
    817 # Copyright (C) 1996-2018 Free Software Foundation, Inc.
    818 #
    819 # This file is free software; the Free Software Foundation
    820 # gives unlimited permission to copy and/or distribute it,
    821 # with or without modifications, as long as this notice is preserved.
    822 
    823 # AM_SANITY_CHECK
    824 # ---------------
    825 AC_DEFUN([AM_SANITY_CHECK],
    826 [AC_MSG_CHECKING([whether build environment is sane])
    827 # Reject unsafe characters in $srcdir or the absolute working directory
    828 # name.  Accept space and tab only in the latter.
    829 am_lf='
    830 '
    831 case `pwd` in
    832   *[[\\\"\#\$\&\'\`$am_lf]]*)
    833     AC_MSG_ERROR([unsafe absolute working directory name]);;
    834 esac
    835 case $srcdir in
    836   *[[\\\"\#\$\&\'\`$am_lf\ \	]]*)
    837     AC_MSG_ERROR([unsafe srcdir value: '$srcdir']);;
    838 esac
    839 
    840 # Do 'set' in a subshell so we don't clobber the current shell's
    841 # arguments.  Must try -L first in case configure is actually a
    842 # symlink; some systems play weird games with the mod time of symlinks
    843 # (eg FreeBSD returns the mod time of the symlink's containing
    844 # directory).
    845 if (
    846    am_has_slept=no
    847    for am_try in 1 2; do
    848      echo "timestamp, slept: $am_has_slept" > conftest.file
    849      set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
    850      if test "$[*]" = "X"; then
    851 	# -L didn't work.
    852 	set X `ls -t "$srcdir/configure" conftest.file`
    853      fi
    854      if test "$[*]" != "X $srcdir/configure conftest.file" \
    855 	&& test "$[*]" != "X conftest.file $srcdir/configure"; then
    856 
    857 	# If neither matched, then we have a broken ls.  This can happen
    858 	# if, for instance, CONFIG_SHELL is bash and it inherits a
    859 	# broken ls alias from the environment.  This has actually
    860 	# happened.  Such a system could not be considered "sane".
    861 	AC_MSG_ERROR([ls -t appears to fail.  Make sure there is not a broken
    862   alias in your environment])
    863      fi
    864      if test "$[2]" = conftest.file || test $am_try -eq 2; then
    865        break
    866      fi
    867      # Just in case.
    868      sleep 1
    869      am_has_slept=yes
    870    done
    871    test "$[2]" = conftest.file
    872    )
    873 then
    874    # Ok.
    875    :
    876 else
    877    AC_MSG_ERROR([newly created file is older than distributed files!
    878 Check your system clock])
    879 fi
    880 AC_MSG_RESULT([yes])
    881 # If we didn't sleep, we still need to ensure time stamps of config.status and
    882 # generated files are strictly newer.
    883 am_sleep_pid=
    884 if grep 'slept: no' conftest.file >/dev/null 2>&1; then
    885   ( sleep 1 ) &
    886   am_sleep_pid=$!
    887 fi
    888 AC_CONFIG_COMMANDS_PRE(
    889   [AC_MSG_CHECKING([that generated files are newer than configure])
    890    if test -n "$am_sleep_pid"; then
    891      # Hide warnings about reused PIDs.
    892      wait $am_sleep_pid 2>/dev/null
    893    fi
    894    AC_MSG_RESULT([done])])
    895 rm -f conftest.file
    896 ])
    897 
    898 # Copyright (C) 2009-2018 Free Software Foundation, Inc.
    899 #
    900 # This file is free software; the Free Software Foundation
    901 # gives unlimited permission to copy and/or distribute it,
    902 # with or without modifications, as long as this notice is preserved.
    903 
    904 # AM_SILENT_RULES([DEFAULT])
    905 # --------------------------
    906 # Enable less verbose build rules; with the default set to DEFAULT
    907 # ("yes" being less verbose, "no" or empty being verbose).
    908 AC_DEFUN([AM_SILENT_RULES],
    909 [AC_ARG_ENABLE([silent-rules], [dnl
    910 AS_HELP_STRING(
    911   [--enable-silent-rules],
    912   [less verbose build output (undo: "make V=1")])
    913 AS_HELP_STRING(
    914   [--disable-silent-rules],
    915   [verbose build output (undo: "make V=0")])dnl
    916 ])
    917 case $enable_silent_rules in @%:@ (((
    918   yes) AM_DEFAULT_VERBOSITY=0;;
    919    no) AM_DEFAULT_VERBOSITY=1;;
    920     *) AM_DEFAULT_VERBOSITY=m4_if([$1], [yes], [0], [1]);;
    921 esac
    922 dnl
    923 dnl A few 'make' implementations (e.g., NonStop OS and NextStep)
    924 dnl do not support nested variable expansions.
    925 dnl See automake bug#9928 and bug#10237.
    926 am_make=${MAKE-make}
    927 AC_CACHE_CHECK([whether $am_make supports nested variables],
    928    [am_cv_make_support_nested_variables],
    929    [if AS_ECHO([['TRUE=$(BAR$(V))
    930 BAR0=false
    931 BAR1=true
    932 V=1
    933 am__doit:
    934 	@$(TRUE)
    935 .PHONY: am__doit']]) | $am_make -f - >/dev/null 2>&1; then
    936   am_cv_make_support_nested_variables=yes
    937 else
    938   am_cv_make_support_nested_variables=no
    939 fi])
    940 if test $am_cv_make_support_nested_variables = yes; then
    941   dnl Using '$V' instead of '$(V)' breaks IRIX make.
    942   AM_V='$(V)'
    943   AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
    944 else
    945   AM_V=$AM_DEFAULT_VERBOSITY
    946   AM_DEFAULT_V=$AM_DEFAULT_VERBOSITY
    947 fi
    948 AC_SUBST([AM_V])dnl
    949 AM_SUBST_NOTMAKE([AM_V])dnl
    950 AC_SUBST([AM_DEFAULT_V])dnl
    951 AM_SUBST_NOTMAKE([AM_DEFAULT_V])dnl
    952 AC_SUBST([AM_DEFAULT_VERBOSITY])dnl
    953 AM_BACKSLASH='\'
    954 AC_SUBST([AM_BACKSLASH])dnl
    955 _AM_SUBST_NOTMAKE([AM_BACKSLASH])dnl
    956 ])
    957 
    958 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
    959 #
    960 # This file is free software; the Free Software Foundation
    961 # gives unlimited permission to copy and/or distribute it,
    962 # with or without modifications, as long as this notice is preserved.
    963 
    964 # AM_PROG_INSTALL_STRIP
    965 # ---------------------
    966 # One issue with vendor 'install' (even GNU) is that you can't
    967 # specify the program used to strip binaries.  This is especially
    968 # annoying in cross-compiling environments, where the build's strip
    969 # is unlikely to handle the host's binaries.
    970 # Fortunately install-sh will honor a STRIPPROG variable, so we
    971 # always use install-sh in "make install-strip", and initialize
    972 # STRIPPROG with the value of the STRIP variable (set by the user).
    973 AC_DEFUN([AM_PROG_INSTALL_STRIP],
    974 [AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
    975 # Installed binaries are usually stripped using 'strip' when the user
    976 # run "make install-strip".  However 'strip' might not be the right
    977 # tool to use in cross-compilation environments, therefore Automake
    978 # will honor the 'STRIP' environment variable to overrule this program.
    979 dnl Don't test for $cross_compiling = yes, because it might be 'maybe'.
    980 if test "$cross_compiling" != no; then
    981   AC_CHECK_TOOL([STRIP], [strip], :)
    982 fi
    983 INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
    984 AC_SUBST([INSTALL_STRIP_PROGRAM])])
    985 
    986 # Copyright (C) 2006-2018 Free Software Foundation, Inc.
    987 #
    988 # This file is free software; the Free Software Foundation
    989 # gives unlimited permission to copy and/or distribute it,
    990 # with or without modifications, as long as this notice is preserved.
    991 
    992 # _AM_SUBST_NOTMAKE(VARIABLE)
    993 # ---------------------------
    994 # Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in.
    995 # This macro is traced by Automake.
    996 AC_DEFUN([_AM_SUBST_NOTMAKE])
    997 
    998 # AM_SUBST_NOTMAKE(VARIABLE)
    999 # --------------------------
   1000 # Public sister of _AM_SUBST_NOTMAKE.
   1001 AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
   1002 
   1003 # Check how to create a tarball.                            -*- Autoconf -*-
   1004 
   1005 # Copyright (C) 2004-2018 Free Software Foundation, Inc.
   1006 #
   1007 # This file is free software; the Free Software Foundation
   1008 # gives unlimited permission to copy and/or distribute it,
   1009 # with or without modifications, as long as this notice is preserved.
   1010 
   1011 # _AM_PROG_TAR(FORMAT)
   1012 # --------------------
   1013 # Check how to create a tarball in format FORMAT.
   1014 # FORMAT should be one of 'v7', 'ustar', or 'pax'.
   1015 #
   1016 # Substitute a variable $(am__tar) that is a command
   1017 # writing to stdout a FORMAT-tarball containing the directory
   1018 # $tardir.
   1019 #     tardir=directory && $(am__tar) > result.tar
   1020 #
   1021 # Substitute a variable $(am__untar) that extract such
   1022 # a tarball read from stdin.
   1023 #     $(am__untar) < result.tar
   1024 #
   1025 AC_DEFUN([_AM_PROG_TAR],
   1026 [# Always define AMTAR for backward compatibility.  Yes, it's still used
   1027 # in the wild :-(  We should find a proper way to deprecate it ...
   1028 AC_SUBST([AMTAR], ['$${TAR-tar}'])
   1029 
   1030 # We'll loop over all known methods to create a tar archive until one works.
   1031 _am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
   1032 
   1033 m4_if([$1], [v7],
   1034   [am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'],
   1035 
   1036   [m4_case([$1],
   1037     [ustar],
   1038      [# The POSIX 1988 'ustar' format is defined with fixed-size fields.
   1039       # There is notably a 21 bits limit for the UID and the GID.  In fact,
   1040       # the 'pax' utility can hang on bigger UID/GID (see automake bug#8343
   1041       # and bug#13588).
   1042       am_max_uid=2097151 # 2^21 - 1
   1043       am_max_gid=$am_max_uid
   1044       # The $UID and $GID variables are not portable, so we need to resort
   1045       # to the POSIX-mandated id(1) utility.  Errors in the 'id' calls
   1046       # below are definitely unexpected, so allow the users to see them
   1047       # (that is, avoid stderr redirection).
   1048       am_uid=`id -u || echo unknown`
   1049       am_gid=`id -g || echo unknown`
   1050       AC_MSG_CHECKING([whether UID '$am_uid' is supported by ustar format])
   1051       if test $am_uid -le $am_max_uid; then
   1052          AC_MSG_RESULT([yes])
   1053       else
   1054          AC_MSG_RESULT([no])
   1055          _am_tools=none
   1056       fi
   1057       AC_MSG_CHECKING([whether GID '$am_gid' is supported by ustar format])
   1058       if test $am_gid -le $am_max_gid; then
   1059          AC_MSG_RESULT([yes])
   1060       else
   1061         AC_MSG_RESULT([no])
   1062         _am_tools=none
   1063       fi],
   1064 
   1065   [pax],
   1066     [],
   1067 
   1068   [m4_fatal([Unknown tar format])])
   1069 
   1070   AC_MSG_CHECKING([how to create a $1 tar archive])
   1071 
   1072   # Go ahead even if we have the value already cached.  We do so because we
   1073   # need to set the values for the 'am__tar' and 'am__untar' variables.
   1074   _am_tools=${am_cv_prog_tar_$1-$_am_tools}
   1075 
   1076   for _am_tool in $_am_tools; do
   1077     case $_am_tool in
   1078     gnutar)
   1079       for _am_tar in tar gnutar gtar; do
   1080         AM_RUN_LOG([$_am_tar --version]) && break
   1081       done
   1082       am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"'
   1083       am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"'
   1084       am__untar="$_am_tar -xf -"
   1085       ;;
   1086     plaintar)
   1087       # Must skip GNU tar: if it does not support --format= it doesn't create
   1088       # ustar tarball either.
   1089       (tar --version) >/dev/null 2>&1 && continue
   1090       am__tar='tar chf - "$$tardir"'
   1091       am__tar_='tar chf - "$tardir"'
   1092       am__untar='tar xf -'
   1093       ;;
   1094     pax)
   1095       am__tar='pax -L -x $1 -w "$$tardir"'
   1096       am__tar_='pax -L -x $1 -w "$tardir"'
   1097       am__untar='pax -r'
   1098       ;;
   1099     cpio)
   1100       am__tar='find "$$tardir" -print | cpio -o -H $1 -L'
   1101       am__tar_='find "$tardir" -print | cpio -o -H $1 -L'
   1102       am__untar='cpio -i -H $1 -d'
   1103       ;;
   1104     none)
   1105       am__tar=false
   1106       am__tar_=false
   1107       am__untar=false
   1108       ;;
   1109     esac
   1110 
   1111     # If the value was cached, stop now.  We just wanted to have am__tar
   1112     # and am__untar set.
   1113     test -n "${am_cv_prog_tar_$1}" && break
   1114 
   1115     # tar/untar a dummy directory, and stop if the command works.
   1116     rm -rf conftest.dir
   1117     mkdir conftest.dir
   1118     echo GrepMe > conftest.dir/file
   1119     AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar])
   1120     rm -rf conftest.dir
   1121     if test -s conftest.tar; then
   1122       AM_RUN_LOG([$am__untar <conftest.tar])
   1123       AM_RUN_LOG([cat conftest.dir/file])
   1124       grep GrepMe conftest.dir/file >/dev/null 2>&1 && break
   1125     fi
   1126   done
   1127   rm -rf conftest.dir
   1128 
   1129   AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])
   1130   AC_MSG_RESULT([$am_cv_prog_tar_$1])])
   1131 
   1132 AC_SUBST([am__tar])
   1133 AC_SUBST([am__untar])
   1134 ]) # _AM_PROG_TAR
   1135 
   1136 m4_include([config/ax_check_compile_flag.m4])
   1137 m4_include([config/ax_check_link_flag.m4])
   1138 m4_include([config/libtool.m4])
   1139 m4_include([config/ltoptions.m4])
   1140 m4_include([config/ltsugar.m4])
   1141 m4_include([config/ltversion.m4])
   1142 m4_include([config/lt~obsolete.m4])