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aclocal.m4 (45133B)


      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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     38 m4_if([$1], [1.16.1], [],
     39       [AC_FATAL([Do not call $0, use AM_INIT_AUTOMAKE([$1]).])])dnl
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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],
     54 [AM_AUTOMAKE_VERSION([1.16.1])dnl
     55 m4_ifndef([AC_AUTOCONF_VERSION],
     56   [m4_copy([m4_DEFAGE_VERSION], [AC_AUTOCONF_VERSION])])dnl
     57 _AM_AUTOCONF_VERSION(m4_defn([AC_AUTOCONF_VERSION]))])
     58 
     59 # Copyright (C) 2011-2018 Free Software Foundation, Inc.
     60 #
     61 # This file is free software; the Free Software Foundation
     62 # gives unlimited permission to copy and/or distribute it,
     63 # with or without modifications, as long as this notice is preserved.
     64 
     65 # AM_PROG_AR([ACT-IF-FAIL])
     66 # -------------------------
     67 # Try to determine the archiver interface, and trigger the ar-lib wrapper
     68 # if it is needed.  If the detection of archiver interface fails, run
     69 # ACT-IF-FAIL (default is to abort configure with a proper error message).
     70 AC_DEFUN([AM_PROG_AR],
     71 [AC_BEFORE([$0], [LT_INIT])dnl
     72 AC_BEFORE([$0], [AC_PROG_LIBTOOL])dnl
     73 AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
     74 AC_REQUIRE_AUX_FILE([ar-lib])dnl
     75 AC_CHECK_TOOLS([AR], [ar lib "link -lib"], [false])
     76 : ${AR=ar}
     77 
     78 AC_CACHE_CHECK([the archiver ($AR) interface], [am_cv_ar_interface],
     79   [AC_LANG_PUSH([C])
     80    am_cv_ar_interface=ar
     81    AC_COMPILE_IFELSE([AC_LANG_SOURCE([[int some_variable = 0;]])],
     82      [am_ar_try='$AR cru libconftest.a conftest.$ac_objext >&AS_MESSAGE_LOG_FD'
     83       AC_TRY_EVAL([am_ar_try])
     84       if test "$ac_status" -eq 0; then
     85         am_cv_ar_interface=ar
     86       else
     87         am_ar_try='$AR -NOLOGO -OUT:conftest.lib conftest.$ac_objext >&AS_MESSAGE_LOG_FD'
     88         AC_TRY_EVAL([am_ar_try])
     89         if test "$ac_status" -eq 0; then
     90           am_cv_ar_interface=lib
     91         else
     92           am_cv_ar_interface=unknown
     93         fi
     94       fi
     95       rm -f conftest.lib libconftest.a
     96      ])
     97    AC_LANG_POP([C])])
     98 
     99 case $am_cv_ar_interface in
    100 ar)
    101   ;;
    102 lib)
    103   # Microsoft lib, so override with the ar-lib wrapper script.
    104   # FIXME: It is wrong to rewrite AR.
    105   # But if we don't then we get into trouble of one sort or another.
    106   # A longer-term fix would be to have automake use am__AR in this case,
    107   # and then we could set am__AR="$am_aux_dir/ar-lib \$(AR)" or something
    108   # similar.
    109   AR="$am_aux_dir/ar-lib $AR"
    110   ;;
    111 unknown)
    112   m4_default([$1],
    113              [AC_MSG_ERROR([could not determine $AR interface])])
    114   ;;
    115 esac
    116 AC_SUBST([AR])dnl
    117 ])
    118 
    119 # AM_AUX_DIR_EXPAND                                         -*- Autoconf -*-
    120 
    121 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
    122 #
    123 # This file is free software; the Free Software Foundation
    124 # gives unlimited permission to copy and/or distribute it,
    125 # with or without modifications, as long as this notice is preserved.
    126 
    127 # For projects using AC_CONFIG_AUX_DIR([foo]), Autoconf sets
    128 # $ac_aux_dir to '$srcdir/foo'.  In other projects, it is set to
    129 # '$srcdir', '$srcdir/..', or '$srcdir/../..'.
    130 #
    131 # Of course, Automake must honor this variable whenever it calls a
    132 # tool from the auxiliary directory.  The problem is that $srcdir (and
    133 # therefore $ac_aux_dir as well) can be either absolute or relative,
    134 # depending on how configure is run.  This is pretty annoying, since
    135 # it makes $ac_aux_dir quite unusable in subdirectories: in the top
    136 # source directory, any form will work fine, but in subdirectories a
    137 # relative path needs to be adjusted first.
    138 #
    139 # $ac_aux_dir/missing
    140 #    fails when called from a subdirectory if $ac_aux_dir is relative
    141 # $top_srcdir/$ac_aux_dir/missing
    142 #    fails if $ac_aux_dir is absolute,
    143 #    fails when called from a subdirectory in a VPATH build with
    144 #          a relative $ac_aux_dir
    145 #
    146 # The reason of the latter failure is that $top_srcdir and $ac_aux_dir
    147 # are both prefixed by $srcdir.  In an in-source build this is usually
    148 # harmless because $srcdir is '.', but things will broke when you
    149 # start a VPATH build or use an absolute $srcdir.
    150 #
    151 # So we could use something similar to $top_srcdir/$ac_aux_dir/missing,
    152 # iff we strip the leading $srcdir from $ac_aux_dir.  That would be:
    153 #   am_aux_dir='\$(top_srcdir)/'`expr "$ac_aux_dir" : "$srcdir//*\(.*\)"`
    154 # and then we would define $MISSING as
    155 #   MISSING="\${SHELL} $am_aux_dir/missing"
    156 # This will work as long as MISSING is not called from configure, because
    157 # unfortunately $(top_srcdir) has no meaning in configure.
    158 # However there are other variables, like CC, which are often used in
    159 # configure, and could therefore not use this "fixed" $ac_aux_dir.
    160 #
    161 # Another solution, used here, is to always expand $ac_aux_dir to an
    162 # absolute PATH.  The drawback is that using absolute paths prevent a
    163 # configured tree to be moved without reconfiguration.
    164 
    165 AC_DEFUN([AM_AUX_DIR_EXPAND],
    166 [AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT])dnl
    167 # Expand $ac_aux_dir to an absolute path.
    168 am_aux_dir=`cd "$ac_aux_dir" && pwd`
    169 ])
    170 
    171 # AM_COND_IF                                            -*- Autoconf -*-
    172 
    173 # Copyright (C) 2008-2018 Free Software Foundation, Inc.
    174 #
    175 # This file is free software; the Free Software Foundation
    176 # gives unlimited permission to copy and/or distribute it,
    177 # with or without modifications, as long as this notice is preserved.
    178 
    179 # _AM_COND_IF
    180 # _AM_COND_ELSE
    181 # _AM_COND_ENDIF
    182 # --------------
    183 # These macros are only used for tracing.
    184 m4_define([_AM_COND_IF])
    185 m4_define([_AM_COND_ELSE])
    186 m4_define([_AM_COND_ENDIF])
    187 
    188 # AM_COND_IF(COND, [IF-TRUE], [IF-FALSE])
    189 # ---------------------------------------
    190 # If the shell condition COND is true, execute IF-TRUE, otherwise execute
    191 # IF-FALSE.  Allow automake to learn about conditional instantiating macros
    192 # (the AC_CONFIG_FOOS).
    193 AC_DEFUN([AM_COND_IF],
    194 [m4_ifndef([_AM_COND_VALUE_$1],
    195 	   [m4_fatal([$0: no such condition "$1"])])dnl
    196 _AM_COND_IF([$1])dnl
    197 if test -z "$$1_TRUE"; then :
    198   m4_n([$2])[]dnl
    199 m4_ifval([$3],
    200 [_AM_COND_ELSE([$1])dnl
    201 else
    202   $3
    203 ])dnl
    204 _AM_COND_ENDIF([$1])dnl
    205 fi[]dnl
    206 ])
    207 
    208 # AM_CONDITIONAL                                            -*- Autoconf -*-
    209 
    210 # Copyright (C) 1997-2018 Free Software Foundation, Inc.
    211 #
    212 # This file is free software; the Free Software Foundation
    213 # gives unlimited permission to copy and/or distribute it,
    214 # with or without modifications, as long as this notice is preserved.
    215 
    216 # AM_CONDITIONAL(NAME, SHELL-CONDITION)
    217 # -------------------------------------
    218 # Define a conditional.
    219 AC_DEFUN([AM_CONDITIONAL],
    220 [AC_PREREQ([2.52])dnl
    221  m4_if([$1], [TRUE],  [AC_FATAL([$0: invalid condition: $1])],
    222        [$1], [FALSE], [AC_FATAL([$0: invalid condition: $1])])dnl
    223 AC_SUBST([$1_TRUE])dnl
    224 AC_SUBST([$1_FALSE])dnl
    225 _AM_SUBST_NOTMAKE([$1_TRUE])dnl
    226 _AM_SUBST_NOTMAKE([$1_FALSE])dnl
    227 m4_define([_AM_COND_VALUE_$1], [$2])dnl
    228 if $2; then
    229   $1_TRUE=
    230   $1_FALSE='#'
    231 else
    232   $1_TRUE='#'
    233   $1_FALSE=
    234 fi
    235 AC_CONFIG_COMMANDS_PRE(
    236 [if test -z "${$1_TRUE}" && test -z "${$1_FALSE}"; then
    237   AC_MSG_ERROR([[conditional "$1" was never defined.
    238 Usually this means the macro was only invoked conditionally.]])
    239 fi])])
    240 
    241 # Copyright (C) 1999-2018 Free Software Foundation, Inc.
    242 #
    243 # This file is free software; the Free Software Foundation
    244 # gives unlimited permission to copy and/or distribute it,
    245 # with or without modifications, as long as this notice is preserved.
    246 
    247 
    248 # There are a few dirty hacks below to avoid letting 'AC_PROG_CC' be
    249 # written in clear, in which case automake, when reading aclocal.m4,
    250 # will think it sees a *use*, and therefore will trigger all it's
    251 # C support machinery.  Also note that it means that autoscan, seeing
    252 # CC etc. in the Makefile, will ask for an AC_PROG_CC use...
    253 
    254 
    255 # _AM_DEPENDENCIES(NAME)
    256 # ----------------------
    257 # See how the compiler implements dependency checking.
    258 # NAME is "CC", "CXX", "OBJC", "OBJCXX", "UPC", or "GJC".
    259 # We try a few techniques and use that to set a single cache variable.
    260 #
    261 # We don't AC_REQUIRE the corresponding AC_PROG_CC since the latter was
    262 # modified to invoke _AM_DEPENDENCIES(CC); we would have a circular
    263 # dependency, and given that the user is not expected to run this macro,
    264 # just rely on AC_PROG_CC.
    265 AC_DEFUN([_AM_DEPENDENCIES],
    266 [AC_REQUIRE([AM_SET_DEPDIR])dnl
    267 AC_REQUIRE([AM_OUTPUT_DEPENDENCY_COMMANDS])dnl
    268 AC_REQUIRE([AM_MAKE_INCLUDE])dnl
    269 AC_REQUIRE([AM_DEP_TRACK])dnl
    270 
    271 m4_if([$1], [CC],   [depcc="$CC"   am_compiler_list=],
    272       [$1], [CXX],  [depcc="$CXX"  am_compiler_list=],
    273       [$1], [OBJC], [depcc="$OBJC" am_compiler_list='gcc3 gcc'],
    274       [$1], [OBJCXX], [depcc="$OBJCXX" am_compiler_list='gcc3 gcc'],
    275       [$1], [UPC],  [depcc="$UPC"  am_compiler_list=],
    276       [$1], [GCJ],  [depcc="$GCJ"  am_compiler_list='gcc3 gcc'],
    277                     [depcc="$$1"   am_compiler_list=])
    278 
    279 AC_CACHE_CHECK([dependency style of $depcc],
    280                [am_cv_$1_dependencies_compiler_type],
    281 [if test -z "$AMDEP_TRUE" && test -f "$am_depcomp"; then
    282   # We make a subdir and do the tests there.  Otherwise we can end up
    283   # making bogus files that we don't know about and never remove.  For
    284   # instance it was reported that on HP-UX the gcc test will end up
    285   # making a dummy file named 'D' -- because '-MD' means "put the output
    286   # in D".
    287   rm -rf conftest.dir
    288   mkdir conftest.dir
    289   # Copy depcomp to subdir because otherwise we won't find it if we're
    290   # using a relative directory.
    291   cp "$am_depcomp" conftest.dir
    292   cd conftest.dir
    293   # We will build objects and dependencies in a subdirectory because
    294   # it helps to detect inapplicable dependency modes.  For instance
    295   # both Tru64's cc and ICC support -MD to output dependencies as a
    296   # side effect of compilation, but ICC will put the dependencies in
    297   # the current directory while Tru64 will put them in the object
    298   # directory.
    299   mkdir sub
    300 
    301   am_cv_$1_dependencies_compiler_type=none
    302   if test "$am_compiler_list" = ""; then
    303      am_compiler_list=`sed -n ['s/^#*\([a-zA-Z0-9]*\))$/\1/p'] < ./depcomp`
    304   fi
    305   am__universal=false
    306   m4_case([$1], [CC],
    307     [case " $depcc " in #(
    308      *\ -arch\ *\ -arch\ *) am__universal=true ;;
    309      esac],
    310     [CXX],
    311     [case " $depcc " in #(
    312      *\ -arch\ *\ -arch\ *) am__universal=true ;;
    313      esac])
    314 
    315   for depmode in $am_compiler_list; do
    316     # Setup a source with many dependencies, because some compilers
    317     # like to wrap large dependency lists on column 80 (with \), and
    318     # we should not choose a depcomp mode which is confused by this.
    319     #
    320     # We need to recreate these files for each test, as the compiler may
    321     # overwrite some of them when testing with obscure command lines.
    322     # This happens at least with the AIX C compiler.
    323     : > sub/conftest.c
    324     for i in 1 2 3 4 5 6; do
    325       echo '#include "conftst'$i'.h"' >> sub/conftest.c
    326       # Using ": > sub/conftst$i.h" creates only sub/conftst1.h with
    327       # Solaris 10 /bin/sh.
    328       echo '/* dummy */' > sub/conftst$i.h
    329     done
    330     echo "${am__include} ${am__quote}sub/conftest.Po${am__quote}" > confmf
    331 
    332     # We check with '-c' and '-o' for the sake of the "dashmstdout"
    333     # mode.  It turns out that the SunPro C++ compiler does not properly
    334     # handle '-M -o', and we need to detect this.  Also, some Intel
    335     # versions had trouble with output in subdirs.
    336     am__obj=sub/conftest.${OBJEXT-o}
    337     am__minus_obj="-o $am__obj"
    338     case $depmode in
    339     gcc)
    340       # This depmode causes a compiler race in universal mode.
    341       test "$am__universal" = false || continue
    342       ;;
    343     nosideeffect)
    344       # After this tag, mechanisms are not by side-effect, so they'll
    345       # only be used when explicitly requested.
    346       if test "x$enable_dependency_tracking" = xyes; then
    347 	continue
    348       else
    349 	break
    350       fi
    351       ;;
    352     msvc7 | msvc7msys | msvisualcpp | msvcmsys)
    353       # This compiler won't grok '-c -o', but also, the minuso test has
    354       # not run yet.  These depmodes are late enough in the game, and
    355       # so weak that their functioning should not be impacted.
    356       am__obj=conftest.${OBJEXT-o}
    357       am__minus_obj=
    358       ;;
    359     none) break ;;
    360     esac
    361     if depmode=$depmode \
    362        source=sub/conftest.c object=$am__obj \
    363        depfile=sub/conftest.Po tmpdepfile=sub/conftest.TPo \
    364        $SHELL ./depcomp $depcc -c $am__minus_obj sub/conftest.c \
    365          >/dev/null 2>conftest.err &&
    366        grep sub/conftst1.h sub/conftest.Po > /dev/null 2>&1 &&
    367        grep sub/conftst6.h sub/conftest.Po > /dev/null 2>&1 &&
    368        grep $am__obj sub/conftest.Po > /dev/null 2>&1 &&
    369        ${MAKE-make} -s -f confmf > /dev/null 2>&1; then
    370       # icc doesn't choke on unknown options, it will just issue warnings
    371       # or remarks (even with -Werror).  So we grep stderr for any message
    372       # that says an option was ignored or not supported.
    373       # When given -MP, icc 7.0 and 7.1 complain thusly:
    374       #   icc: Command line warning: ignoring option '-M'; no argument required
    375       # The diagnosis changed in icc 8.0:
    376       #   icc: Command line remark: option '-MP' not supported
    377       if (grep 'ignoring option' conftest.err ||
    378           grep 'not supported' conftest.err) >/dev/null 2>&1; then :; else
    379         am_cv_$1_dependencies_compiler_type=$depmode
    380         break
    381       fi
    382     fi
    383   done
    384 
    385   cd ..
    386   rm -rf conftest.dir
    387 else
    388   am_cv_$1_dependencies_compiler_type=none
    389 fi
    390 ])
    391 AC_SUBST([$1DEPMODE], [depmode=$am_cv_$1_dependencies_compiler_type])
    392 AM_CONDITIONAL([am__fastdep$1], [
    393   test "x$enable_dependency_tracking" != xno \
    394   && test "$am_cv_$1_dependencies_compiler_type" = gcc3])
    395 ])
    396 
    397 
    398 # AM_SET_DEPDIR
    399 # -------------
    400 # Choose a directory name for dependency files.
    401 # This macro is AC_REQUIREd in _AM_DEPENDENCIES.
    402 AC_DEFUN([AM_SET_DEPDIR],
    403 [AC_REQUIRE([AM_SET_LEADING_DOT])dnl
    404 AC_SUBST([DEPDIR], ["${am__leading_dot}deps"])dnl
    405 ])
    406 
    407 
    408 # AM_DEP_TRACK
    409 # ------------
    410 AC_DEFUN([AM_DEP_TRACK],
    411 [AC_ARG_ENABLE([dependency-tracking], [dnl
    412 AS_HELP_STRING(
    413   [--enable-dependency-tracking],
    414   [do not reject slow dependency extractors])
    415 AS_HELP_STRING(
    416   [--disable-dependency-tracking],
    417   [speeds up one-time build])])
    418 if test "x$enable_dependency_tracking" != xno; then
    419   am_depcomp="$ac_aux_dir/depcomp"
    420   AMDEPBACKSLASH='\'
    421   am__nodep='_no'
    422 fi
    423 AM_CONDITIONAL([AMDEP], [test "x$enable_dependency_tracking" != xno])
    424 AC_SUBST([AMDEPBACKSLASH])dnl
    425 _AM_SUBST_NOTMAKE([AMDEPBACKSLASH])dnl
    426 AC_SUBST([am__nodep])dnl
    427 _AM_SUBST_NOTMAKE([am__nodep])dnl
    428 ])
    429 
    430 # Generate code to set up dependency tracking.              -*- Autoconf -*-
    431 
    432 # Copyright (C) 1999-2018 Free Software Foundation, Inc.
    433 #
    434 # This file is free software; the Free Software Foundation
    435 # gives unlimited permission to copy and/or distribute it,
    436 # with or without modifications, as long as this notice is preserved.
    437 
    438 # _AM_OUTPUT_DEPENDENCY_COMMANDS
    439 # ------------------------------
    440 AC_DEFUN([_AM_OUTPUT_DEPENDENCY_COMMANDS],
    441 [{
    442   # Older Autoconf quotes --file arguments for eval, but not when files
    443   # are listed without --file.  Let's play safe and only enable the eval
    444   # if we detect the quoting.
    445   # TODO: see whether this extra hack can be removed once we start
    446   # requiring Autoconf 2.70 or later.
    447   AS_CASE([$CONFIG_FILES],
    448           [*\'*], [eval set x "$CONFIG_FILES"],
    449           [*], [set x $CONFIG_FILES])
    450   shift
    451   # Used to flag and report bootstrapping failures.
    452   am_rc=0
    453   for am_mf
    454   do
    455     # Strip MF so we end up with the name of the file.
    456     am_mf=`AS_ECHO(["$am_mf"]) | sed -e 's/:.*$//'`
    457     # Check whether this is an Automake generated Makefile which includes
    458     # dependency-tracking related rules and includes.
    459     # Grep'ing the whole file directly is not great: AIX grep has a line
    460     # limit of 2048, but all sed's we know have understand at least 4000.
    461     sed -n 's,^am--depfiles:.*,X,p' "$am_mf" | grep X >/dev/null 2>&1 \
    462       || continue
    463     am_dirpart=`AS_DIRNAME(["$am_mf"])`
    464     am_filepart=`AS_BASENAME(["$am_mf"])`
    465     AM_RUN_LOG([cd "$am_dirpart" \
    466       && sed -e '/# am--include-marker/d' "$am_filepart" \
    467         | $MAKE -f - am--depfiles]) || am_rc=$?
    468   done
    469   if test $am_rc -ne 0; then
    470     AC_MSG_FAILURE([Something went wrong bootstrapping makefile fragments
    471     for automatic dependency tracking.  Try re-running configure with the
    472     '--disable-dependency-tracking' option to at least be able to build
    473     the package (albeit without support for automatic dependency tracking).])
    474   fi
    475   AS_UNSET([am_dirpart])
    476   AS_UNSET([am_filepart])
    477   AS_UNSET([am_mf])
    478   AS_UNSET([am_rc])
    479   rm -f conftest-deps.mk
    480 }
    481 ])# _AM_OUTPUT_DEPENDENCY_COMMANDS
    482 
    483 
    484 # AM_OUTPUT_DEPENDENCY_COMMANDS
    485 # -----------------------------
    486 # This macro should only be invoked once -- use via AC_REQUIRE.
    487 #
    488 # This code is only required when automatic dependency tracking is enabled.
    489 # This creates each '.Po' and '.Plo' makefile fragment that we'll need in
    490 # order to bootstrap the dependency handling code.
    491 AC_DEFUN([AM_OUTPUT_DEPENDENCY_COMMANDS],
    492 [AC_CONFIG_COMMANDS([depfiles],
    493      [test x"$AMDEP_TRUE" != x"" || _AM_OUTPUT_DEPENDENCY_COMMANDS],
    494      [AMDEP_TRUE="$AMDEP_TRUE" MAKE="${MAKE-make}"])])
    495 
    496 # Do all the work for Automake.                             -*- Autoconf -*-
    497 
    498 # Copyright (C) 1996-2018 Free Software Foundation, Inc.
    499 #
    500 # This file is free software; the Free Software Foundation
    501 # gives unlimited permission to copy and/or distribute it,
    502 # with or without modifications, as long as this notice is preserved.
    503 
    504 # This macro actually does too much.  Some checks are only needed if
    505 # your package does certain things.  But this isn't really a big deal.
    506 
    507 dnl Redefine AC_PROG_CC to automatically invoke _AM_PROG_CC_C_O.
    508 m4_define([AC_PROG_CC],
    509 m4_defn([AC_PROG_CC])
    510 [_AM_PROG_CC_C_O
    511 ])
    512 
    513 # AM_INIT_AUTOMAKE(DEFAGE, VERSION, [NO-DEFINE])
    514 # AM_INIT_AUTOMAKE([OPTIONS])
    515 # -----------------------------------------------
    516 # The call with DEFAGE and VERSION arguments is the old style
    517 # call (pre autoconf-2.50), which is being phased out.  DEFAGE
    518 # and VERSION should now be passed to AC_INIT and removed from
    519 # the call to AM_INIT_AUTOMAKE.
    520 # We support both call styles for the transition.  After
    521 # the next Automake release, Autoconf can make the AC_INIT
    522 # arguments mandatory, and then we can depend on a new Autoconf
    523 # release and drop the old call support.
    524 AC_DEFUN([AM_INIT_AUTOMAKE],
    525 [AC_PREREQ([2.65])dnl
    526 dnl Autoconf wants to disallow AM_ names.  We explicitly allow
    527 dnl the ones we care about.
    528 m4_pattern_allow([^AM_[A-Z]+FLAGS$])dnl
    529 AC_REQUIRE([AM_SET_CURRENT_AUTOMAKE_VERSION])dnl
    530 AC_REQUIRE([AC_PROG_INSTALL])dnl
    531 if test "`cd $srcdir && pwd`" != "`pwd`"; then
    532   # Use -I$(srcdir) only when $(srcdir) != ., so that make's output
    533   # is not polluted with repeated "-I."
    534   AC_SUBST([am__isrc], [' -I$(srcdir)'])_AM_SUBST_NOTMAKE([am__isrc])dnl
    535   # test to see if srcdir already configured
    536   if test -f $srcdir/config.status; then
    537     AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
    538   fi
    539 fi
    540 
    541 # test whether we have cygpath
    542 if test -z "$CYGPATH_W"; then
    543   if (cygpath --version) >/dev/null 2>/dev/null; then
    544     CYGPATH_W='cygpath -w'
    545   else
    546     CYGPATH_W=echo
    547   fi
    548 fi
    549 AC_SUBST([CYGPATH_W])
    550 
    551 # Define the identity of the package.
    552 dnl Distinguish between old-style and new-style calls.
    553 m4_ifval([$2],
    554 [AC_DIAGNOSE([obsolete],
    555              [$0: two- and three-arguments forms are deprecated.])
    556 m4_ifval([$3], [_AM_SET_OPTION([no-define])])dnl
    557  AC_SUBST([DEFAGE], [$1])dnl
    558  AC_SUBST([VERSION], [$2])],
    559 [_AM_SET_OPTIONS([$1])dnl
    560 dnl Diagnose old-style AC_INIT with new-style AM_AUTOMAKE_INIT.
    561 m4_if(
    562   m4_ifdef([AC_DEFAGE_NAME], [ok]):m4_ifdef([AC_DEFAGE_VERSION], [ok]),
    563   [ok:ok],,
    564   [m4_fatal([AC_INIT should be called with package and version arguments])])dnl
    565  AC_SUBST([DEFAGE], ['AC_DEFAGE_TARNAME'])dnl
    566  AC_SUBST([VERSION], ['AC_DEFAGE_VERSION'])])dnl
    567 
    568 _AM_IF_OPTION([no-define],,
    569 [AC_DEFINE_UNQUOTED([DEFAGE], ["$DEFAGE"], [Name of package])
    570  AC_DEFINE_UNQUOTED([VERSION], ["$VERSION"], [Version number of package])])dnl
    571 
    572 # Some tools Automake needs.
    573 AC_REQUIRE([AM_SANITY_CHECK])dnl
    574 AC_REQUIRE([AC_ARG_PROGRAM])dnl
    575 AM_MISSING_PROG([ACLOCAL], [aclocal-${am__api_version}])
    576 AM_MISSING_PROG([AUTOCONF], [autoconf])
    577 AM_MISSING_PROG([AUTOMAKE], [automake-${am__api_version}])
    578 AM_MISSING_PROG([AUTOHEADER], [autoheader])
    579 AM_MISSING_PROG([MAKEINFO], [makeinfo])
    580 AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
    581 AC_REQUIRE([AM_PROG_INSTALL_STRIP])dnl
    582 AC_REQUIRE([AC_PROG_MKDIR_P])dnl
    583 # For better backward compatibility.  To be removed once Automake 1.9.x
    584 # dies out for good.  For more background, see:
    585 # <https://lists.gnu.org/archive/html/automake/2012-07/msg00001.html>
    586 # <https://lists.gnu.org/archive/html/automake/2012-07/msg00014.html>
    587 AC_SUBST([mkdir_p], ['$(MKDIR_P)'])
    588 # We need awk for the "check" target (and possibly the TAP driver).  The
    589 # system "awk" is bad on some platforms.
    590 AC_REQUIRE([AC_PROG_AWK])dnl
    591 AC_REQUIRE([AC_PROG_MAKE_SET])dnl
    592 AC_REQUIRE([AM_SET_LEADING_DOT])dnl
    593 _AM_IF_OPTION([tar-ustar], [_AM_PROG_TAR([ustar])],
    594 	      [_AM_IF_OPTION([tar-pax], [_AM_PROG_TAR([pax])],
    595 			     [_AM_PROG_TAR([v7])])])
    596 _AM_IF_OPTION([no-dependencies],,
    597 [AC_PROVIDE_IFELSE([AC_PROG_CC],
    598 		  [_AM_DEPENDENCIES([CC])],
    599 		  [m4_define([AC_PROG_CC],
    600 			     m4_defn([AC_PROG_CC])[_AM_DEPENDENCIES([CC])])])dnl
    601 AC_PROVIDE_IFELSE([AC_PROG_CXX],
    602 		  [_AM_DEPENDENCIES([CXX])],
    603 		  [m4_define([AC_PROG_CXX],
    604 			     m4_defn([AC_PROG_CXX])[_AM_DEPENDENCIES([CXX])])])dnl
    605 AC_PROVIDE_IFELSE([AC_PROG_OBJC],
    606 		  [_AM_DEPENDENCIES([OBJC])],
    607 		  [m4_define([AC_PROG_OBJC],
    608 			     m4_defn([AC_PROG_OBJC])[_AM_DEPENDENCIES([OBJC])])])dnl
    609 AC_PROVIDE_IFELSE([AC_PROG_OBJCXX],
    610 		  [_AM_DEPENDENCIES([OBJCXX])],
    611 		  [m4_define([AC_PROG_OBJCXX],
    612 			     m4_defn([AC_PROG_OBJCXX])[_AM_DEPENDENCIES([OBJCXX])])])dnl
    613 ])
    614 AC_REQUIRE([AM_SILENT_RULES])dnl
    615 dnl The testsuite driver may need to know about EXEEXT, so add the
    616 dnl 'am__EXEEXT' conditional if _AM_COMPILER_EXEEXT was seen.  This
    617 dnl macro is hooked onto _AC_COMPILER_EXEEXT early, see below.
    618 AC_CONFIG_COMMANDS_PRE(dnl
    619 [m4_provide_if([_AM_COMPILER_EXEEXT],
    620   [AM_CONDITIONAL([am__EXEEXT], [test -n "$EXEEXT"])])])dnl
    621 
    622 # POSIX will say in a future version that running "rm -f" with no argument
    623 # is OK; and we want to be able to make that assumption in our Makefile
    624 # recipes.  So use an aggressive probe to check that the usage we want is
    625 # actually supported "in the wild" to an acceptable degree.
    626 # See automake bug#10828.
    627 # To make any issue more visible, cause the running configure to be aborted
    628 # by default if the 'rm' program in use doesn't match our expectations; the
    629 # user can still override this though.
    630 if rm -f && rm -fr && rm -rf; then : OK; else
    631   cat >&2 <<'END'
    632 Oops!
    633 
    634 Your 'rm' program seems unable to run without file operands specified
    635 on the command line, even when the '-f' option is present.  This is contrary
    636 to the behaviour of most rm programs out there, and not conforming with
    637 the upcoming POSIX standard: <http://austingroupbugs.net/view.php?id=542>
    638 
    639 Please tell bug-automake@gnu.org about your system, including the value
    640 of your $PATH and any error possibly output before this message.  This
    641 can help us improve future automake versions.
    642 
    643 END
    644   if test x"$ACCEPT_INFERIOR_RM_PROGRAM" = x"yes"; then
    645     echo 'Configuration will proceed anyway, since you have set the' >&2
    646     echo 'ACCEPT_INFERIOR_RM_PROGRAM variable to "yes"' >&2
    647     echo >&2
    648   else
    649     cat >&2 <<'END'
    650 Aborting the configuration process, to ensure you take notice of the issue.
    651 
    652 You can download and install GNU coreutils to get an 'rm' implementation
    653 that behaves properly: <https://www.gnu.org/software/coreutils/>.
    654 
    655 If you want to complete the configuration process using your problematic
    656 'rm' anyway, export the environment variable ACCEPT_INFERIOR_RM_PROGRAM
    657 to "yes", and re-run configure.
    658 
    659 END
    660     AC_MSG_ERROR([Your 'rm' program is bad, sorry.])
    661   fi
    662 fi
    663 dnl The trailing newline in this macro's definition is deliberate, for
    664 dnl backward compatibility and to allow trailing 'dnl'-style comments
    665 dnl after the AM_INIT_AUTOMAKE invocation. See automake bug#16841.
    666 ])
    667 
    668 dnl Hook into '_AC_COMPILER_EXEEXT' early to learn its expansion.  Do not
    669 dnl add the conditional right here, as _AC_COMPILER_EXEEXT may be further
    670 dnl mangled by Autoconf and run in a shell conditional statement.
    671 m4_define([_AC_COMPILER_EXEEXT],
    672 m4_defn([_AC_COMPILER_EXEEXT])[m4_provide([_AM_COMPILER_EXEEXT])])
    673 
    674 # When config.status generates a header, we must update the stamp-h file.
    675 # This file resides in the same directory as the config header
    676 # that is generated.  The stamp files are numbered to have different names.
    677 
    678 # Autoconf calls _AC_AM_CONFIG_HEADER_HOOK (when defined) in the
    679 # loop where config.status creates the headers, so we can generate
    680 # our stamp files there.
    681 AC_DEFUN([_AC_AM_CONFIG_HEADER_HOOK],
    682 [# Compute $1's index in $config_headers.
    683 _am_arg=$1
    684 _am_stamp_count=1
    685 for _am_header in $config_headers :; do
    686   case $_am_header in
    687     $_am_arg | $_am_arg:* )
    688       break ;;
    689     * )
    690       _am_stamp_count=`expr $_am_stamp_count + 1` ;;
    691   esac
    692 done
    693 echo "timestamp for $_am_arg" >`AS_DIRNAME(["$_am_arg"])`/stamp-h[]$_am_stamp_count])
    694 
    695 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
    696 #
    697 # This file is free software; the Free Software Foundation
    698 # gives unlimited permission to copy and/or distribute it,
    699 # with or without modifications, as long as this notice is preserved.
    700 
    701 # AM_PROG_INSTALL_SH
    702 # ------------------
    703 # Define $install_sh.
    704 AC_DEFUN([AM_PROG_INSTALL_SH],
    705 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
    706 if test x"${install_sh+set}" != xset; then
    707   case $am_aux_dir in
    708   *\ * | *\	*)
    709     install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
    710   *)
    711     install_sh="\${SHELL} $am_aux_dir/install-sh"
    712   esac
    713 fi
    714 AC_SUBST([install_sh])])
    715 
    716 # Copyright (C) 2003-2018 Free Software Foundation, Inc.
    717 #
    718 # This file is free software; the Free Software Foundation
    719 # gives unlimited permission to copy and/or distribute it,
    720 # with or without modifications, as long as this notice is preserved.
    721 
    722 # Check whether the underlying file-system supports filenames
    723 # with a leading dot.  For instance MS-DOS doesn't.
    724 AC_DEFUN([AM_SET_LEADING_DOT],
    725 [rm -rf .tst 2>/dev/null
    726 mkdir .tst 2>/dev/null
    727 if test -d .tst; then
    728   am__leading_dot=.
    729 else
    730   am__leading_dot=_
    731 fi
    732 rmdir .tst 2>/dev/null
    733 AC_SUBST([am__leading_dot])])
    734 
    735 # Check to see how 'make' treats includes.	            -*- Autoconf -*-
    736 
    737 # Copyright (C) 2001-2018 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_MAKE_INCLUDE()
    744 # -----------------
    745 # Check whether make has an 'include' directive that can support all
    746 # the idioms we need for our automatic dependency tracking code.
    747 AC_DEFUN([AM_MAKE_INCLUDE],
    748 [AC_MSG_CHECKING([whether ${MAKE-make} supports the include directive])
    749 cat > confinc.mk << 'END'
    750 am__doit:
    751 	@echo this is the am__doit target >confinc.out
    752 .PHONY: am__doit
    753 END
    754 am__include="#"
    755 am__quote=
    756 # BSD make does it like this.
    757 echo '.include "confinc.mk" # ignored' > confmf.BSD
    758 # Other make implementations (GNU, Solaris 10, AIX) do it like this.
    759 echo 'include confinc.mk # ignored' > confmf.GNU
    760 _am_result=no
    761 for s in GNU BSD; do
    762   AM_RUN_LOG([${MAKE-make} -f confmf.$s && cat confinc.out])
    763   AS_CASE([$?:`cat confinc.out 2>/dev/null`],
    764       ['0:this is the am__doit target'],
    765       [AS_CASE([$s],
    766           [BSD], [am__include='.include' am__quote='"'],
    767           [am__include='include' am__quote=''])])
    768   if test "$am__include" != "#"; then
    769     _am_result="yes ($s style)"
    770     break
    771   fi
    772 done
    773 rm -f confinc.* confmf.*
    774 AC_MSG_RESULT([${_am_result}])
    775 AC_SUBST([am__include])])
    776 AC_SUBST([am__quote])])
    777 
    778 # Fake the existence of programs that GNU maintainers use.  -*- Autoconf -*-
    779 
    780 # Copyright (C) 1997-2018 Free Software Foundation, Inc.
    781 #
    782 # This file is free software; the Free Software Foundation
    783 # gives unlimited permission to copy and/or distribute it,
    784 # with or without modifications, as long as this notice is preserved.
    785 
    786 # AM_MISSING_PROG(NAME, PROGRAM)
    787 # ------------------------------
    788 AC_DEFUN([AM_MISSING_PROG],
    789 [AC_REQUIRE([AM_MISSING_HAS_RUN])
    790 $1=${$1-"${am_missing_run}$2"}
    791 AC_SUBST($1)])
    792 
    793 # AM_MISSING_HAS_RUN
    794 # ------------------
    795 # Define MISSING if not defined so far and test if it is modern enough.
    796 # If it is, set am_missing_run to use it, otherwise, to nothing.
    797 AC_DEFUN([AM_MISSING_HAS_RUN],
    798 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
    799 AC_REQUIRE_AUX_FILE([missing])dnl
    800 if test x"${MISSING+set}" != xset; then
    801   case $am_aux_dir in
    802   *\ * | *\	*)
    803     MISSING="\${SHELL} \"$am_aux_dir/missing\"" ;;
    804   *)
    805     MISSING="\${SHELL} $am_aux_dir/missing" ;;
    806   esac
    807 fi
    808 # Use eval to expand $SHELL
    809 if eval "$MISSING --is-lightweight"; then
    810   am_missing_run="$MISSING "
    811 else
    812   am_missing_run=
    813   AC_MSG_WARN(['missing' script is too old or missing])
    814 fi
    815 ])
    816 
    817 # Helper functions for option handling.                     -*- Autoconf -*-
    818 
    819 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
    820 #
    821 # This file is free software; the Free Software Foundation
    822 # gives unlimited permission to copy and/or distribute it,
    823 # with or without modifications, as long as this notice is preserved.
    824 
    825 # _AM_MANGLE_OPTION(NAME)
    826 # -----------------------
    827 AC_DEFUN([_AM_MANGLE_OPTION],
    828 [[_AM_OPTION_]m4_bpatsubst($1, [[^a-zA-Z0-9_]], [_])])
    829 
    830 # _AM_SET_OPTION(NAME)
    831 # --------------------
    832 # Set option NAME.  Presently that only means defining a flag for this option.
    833 AC_DEFUN([_AM_SET_OPTION],
    834 [m4_define(_AM_MANGLE_OPTION([$1]), [1])])
    835 
    836 # _AM_SET_OPTIONS(OPTIONS)
    837 # ------------------------
    838 # OPTIONS is a space-separated list of Automake options.
    839 AC_DEFUN([_AM_SET_OPTIONS],
    840 [m4_foreach_w([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])])
    841 
    842 # _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET])
    843 # -------------------------------------------
    844 # Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
    845 AC_DEFUN([_AM_IF_OPTION],
    846 [m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])
    847 
    848 # Copyright (C) 1999-2018 Free Software Foundation, Inc.
    849 #
    850 # This file is free software; the Free Software Foundation
    851 # gives unlimited permission to copy and/or distribute it,
    852 # with or without modifications, as long as this notice is preserved.
    853 
    854 # _AM_PROG_CC_C_O
    855 # ---------------
    856 # Like AC_PROG_CC_C_O, but changed for automake.  We rewrite AC_PROG_CC
    857 # to automatically call this.
    858 AC_DEFUN([_AM_PROG_CC_C_O],
    859 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
    860 AC_REQUIRE_AUX_FILE([compile])dnl
    861 AC_LANG_PUSH([C])dnl
    862 AC_CACHE_CHECK(
    863   [whether $CC understands -c and -o together],
    864   [am_cv_prog_cc_c_o],
    865   [AC_LANG_CONFTEST([AC_LANG_PROGRAM([])])
    866   # Make sure it works both with $CC and with simple cc.
    867   # Following AC_PROG_CC_C_O, we do the test twice because some
    868   # compilers refuse to overwrite an existing .o file with -o,
    869   # though they will create one.
    870   am_cv_prog_cc_c_o=yes
    871   for am_i in 1 2; do
    872     if AM_RUN_LOG([$CC -c conftest.$ac_ext -o conftest2.$ac_objext]) \
    873          && test -f conftest2.$ac_objext; then
    874       : OK
    875     else
    876       am_cv_prog_cc_c_o=no
    877       break
    878     fi
    879   done
    880   rm -f core conftest*
    881   unset am_i])
    882 if test "$am_cv_prog_cc_c_o" != yes; then
    883    # Losing compiler, so override with the script.
    884    # FIXME: It is wrong to rewrite CC.
    885    # But if we don't then we get into trouble of one sort or another.
    886    # A longer-term fix would be to have automake use am__CC in this case,
    887    # and then we could set am__CC="\$(top_srcdir)/compile \$(CC)"
    888    CC="$am_aux_dir/compile $CC"
    889 fi
    890 AC_LANG_POP([C])])
    891 
    892 # For backward compatibility.
    893 AC_DEFUN_ONCE([AM_PROG_CC_C_O], [AC_REQUIRE([AC_PROG_CC])])
    894 
    895 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
    896 #
    897 # This file is free software; the Free Software Foundation
    898 # gives unlimited permission to copy and/or distribute it,
    899 # with or without modifications, as long as this notice is preserved.
    900 
    901 # AM_RUN_LOG(COMMAND)
    902 # -------------------
    903 # Run COMMAND, save the exit status in ac_status, and log it.
    904 # (This has been adapted from Autoconf's _AC_RUN_LOG macro.)
    905 AC_DEFUN([AM_RUN_LOG],
    906 [{ echo "$as_me:$LINENO: $1" >&AS_MESSAGE_LOG_FD
    907    ($1) >&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD
    908    ac_status=$?
    909    echo "$as_me:$LINENO: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
    910    (exit $ac_status); }])
    911 
    912 # Check to make sure that the build environment is sane.    -*- Autoconf -*-
    913 
    914 # Copyright (C) 1996-2018 Free Software Foundation, Inc.
    915 #
    916 # This file is free software; the Free Software Foundation
    917 # gives unlimited permission to copy and/or distribute it,
    918 # with or without modifications, as long as this notice is preserved.
    919 
    920 # AM_SANITY_CHECK
    921 # ---------------
    922 AC_DEFUN([AM_SANITY_CHECK],
    923 [AC_MSG_CHECKING([whether build environment is sane])
    924 # Reject unsafe characters in $srcdir or the absolute working directory
    925 # name.  Accept space and tab only in the latter.
    926 am_lf='
    927 '
    928 case `pwd` in
    929   *[[\\\"\#\$\&\'\`$am_lf]]*)
    930     AC_MSG_ERROR([unsafe absolute working directory name]);;
    931 esac
    932 case $srcdir in
    933   *[[\\\"\#\$\&\'\`$am_lf\ \	]]*)
    934     AC_MSG_ERROR([unsafe srcdir value: '$srcdir']);;
    935 esac
    936 
    937 # Do 'set' in a subshell so we don't clobber the current shell's
    938 # arguments.  Must try -L first in case configure is actually a
    939 # symlink; some systems play weird games with the mod time of symlinks
    940 # (eg FreeBSD returns the mod time of the symlink's containing
    941 # directory).
    942 if (
    943    am_has_slept=no
    944    for am_try in 1 2; do
    945      echo "timestamp, slept: $am_has_slept" > conftest.file
    946      set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
    947      if test "$[*]" = "X"; then
    948 	# -L didn't work.
    949 	set X `ls -t "$srcdir/configure" conftest.file`
    950      fi
    951      if test "$[*]" != "X $srcdir/configure conftest.file" \
    952 	&& test "$[*]" != "X conftest.file $srcdir/configure"; then
    953 
    954 	# If neither matched, then we have a broken ls.  This can happen
    955 	# if, for instance, CONFIG_SHELL is bash and it inherits a
    956 	# broken ls alias from the environment.  This has actually
    957 	# happened.  Such a system could not be considered "sane".
    958 	AC_MSG_ERROR([ls -t appears to fail.  Make sure there is not a broken
    959   alias in your environment])
    960      fi
    961      if test "$[2]" = conftest.file || test $am_try -eq 2; then
    962        break
    963      fi
    964      # Just in case.
    965      sleep 1
    966      am_has_slept=yes
    967    done
    968    test "$[2]" = conftest.file
    969    )
    970 then
    971    # Ok.
    972    :
    973 else
    974    AC_MSG_ERROR([newly created file is older than distributed files!
    975 Check your system clock])
    976 fi
    977 AC_MSG_RESULT([yes])
    978 # If we didn't sleep, we still need to ensure time stamps of config.status and
    979 # generated files are strictly newer.
    980 am_sleep_pid=
    981 if grep 'slept: no' conftest.file >/dev/null 2>&1; then
    982   ( sleep 1 ) &
    983   am_sleep_pid=$!
    984 fi
    985 AC_CONFIG_COMMANDS_PRE(
    986   [AC_MSG_CHECKING([that generated files are newer than configure])
    987    if test -n "$am_sleep_pid"; then
    988      # Hide warnings about reused PIDs.
    989      wait $am_sleep_pid 2>/dev/null
    990    fi
    991    AC_MSG_RESULT([done])])
    992 rm -f conftest.file
    993 ])
    994 
    995 # Copyright (C) 2009-2018 Free Software Foundation, Inc.
    996 #
    997 # This file is free software; the Free Software Foundation
    998 # gives unlimited permission to copy and/or distribute it,
    999 # with or without modifications, as long as this notice is preserved.
   1000 
   1001 # AM_SILENT_RULES([DEFAULT])
   1002 # --------------------------
   1003 # Enable less verbose build rules; with the default set to DEFAULT
   1004 # ("yes" being less verbose, "no" or empty being verbose).
   1005 AC_DEFUN([AM_SILENT_RULES],
   1006 [AC_ARG_ENABLE([silent-rules], [dnl
   1007 AS_HELP_STRING(
   1008   [--enable-silent-rules],
   1009   [less verbose build output (undo: "make V=1")])
   1010 AS_HELP_STRING(
   1011   [--disable-silent-rules],
   1012   [verbose build output (undo: "make V=0")])dnl
   1013 ])
   1014 case $enable_silent_rules in @%:@ (((
   1015   yes) AM_DEFAULT_VERBOSITY=0;;
   1016    no) AM_DEFAULT_VERBOSITY=1;;
   1017     *) AM_DEFAULT_VERBOSITY=m4_if([$1], [yes], [0], [1]);;
   1018 esac
   1019 dnl
   1020 dnl A few 'make' implementations (e.g., NonStop OS and NextStep)
   1021 dnl do not support nested variable expansions.
   1022 dnl See automake bug#9928 and bug#10237.
   1023 am_make=${MAKE-make}
   1024 AC_CACHE_CHECK([whether $am_make supports nested variables],
   1025    [am_cv_make_support_nested_variables],
   1026    [if AS_ECHO([['TRUE=$(BAR$(V))
   1027 BAR0=false
   1028 BAR1=true
   1029 V=1
   1030 am__doit:
   1031 	@$(TRUE)
   1032 .PHONY: am__doit']]) | $am_make -f - >/dev/null 2>&1; then
   1033   am_cv_make_support_nested_variables=yes
   1034 else
   1035   am_cv_make_support_nested_variables=no
   1036 fi])
   1037 if test $am_cv_make_support_nested_variables = yes; then
   1038   dnl Using '$V' instead of '$(V)' breaks IRIX make.
   1039   AM_V='$(V)'
   1040   AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
   1041 else
   1042   AM_V=$AM_DEFAULT_VERBOSITY
   1043   AM_DEFAULT_V=$AM_DEFAULT_VERBOSITY
   1044 fi
   1045 AC_SUBST([AM_V])dnl
   1046 AM_SUBST_NOTMAKE([AM_V])dnl
   1047 AC_SUBST([AM_DEFAULT_V])dnl
   1048 AM_SUBST_NOTMAKE([AM_DEFAULT_V])dnl
   1049 AC_SUBST([AM_DEFAULT_VERBOSITY])dnl
   1050 AM_BACKSLASH='\'
   1051 AC_SUBST([AM_BACKSLASH])dnl
   1052 _AM_SUBST_NOTMAKE([AM_BACKSLASH])dnl
   1053 ])
   1054 
   1055 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
   1056 #
   1057 # This file is free software; the Free Software Foundation
   1058 # gives unlimited permission to copy and/or distribute it,
   1059 # with or without modifications, as long as this notice is preserved.
   1060 
   1061 # AM_PROG_INSTALL_STRIP
   1062 # ---------------------
   1063 # One issue with vendor 'install' (even GNU) is that you can't
   1064 # specify the program used to strip binaries.  This is especially
   1065 # annoying in cross-compiling environments, where the build's strip
   1066 # is unlikely to handle the host's binaries.
   1067 # Fortunately install-sh will honor a STRIPPROG variable, so we
   1068 # always use install-sh in "make install-strip", and initialize
   1069 # STRIPPROG with the value of the STRIP variable (set by the user).
   1070 AC_DEFUN([AM_PROG_INSTALL_STRIP],
   1071 [AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
   1072 # Installed binaries are usually stripped using 'strip' when the user
   1073 # run "make install-strip".  However 'strip' might not be the right
   1074 # tool to use in cross-compilation environments, therefore Automake
   1075 # will honor the 'STRIP' environment variable to overrule this program.
   1076 dnl Don't test for $cross_compiling = yes, because it might be 'maybe'.
   1077 if test "$cross_compiling" != no; then
   1078   AC_CHECK_TOOL([STRIP], [strip], :)
   1079 fi
   1080 INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
   1081 AC_SUBST([INSTALL_STRIP_PROGRAM])])
   1082 
   1083 # Copyright (C) 2006-2018 Free Software Foundation, Inc.
   1084 #
   1085 # This file is free software; the Free Software Foundation
   1086 # gives unlimited permission to copy and/or distribute it,
   1087 # with or without modifications, as long as this notice is preserved.
   1088 
   1089 # _AM_SUBST_NOTMAKE(VARIABLE)
   1090 # ---------------------------
   1091 # Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in.
   1092 # This macro is traced by Automake.
   1093 AC_DEFUN([_AM_SUBST_NOTMAKE])
   1094 
   1095 # AM_SUBST_NOTMAKE(VARIABLE)
   1096 # --------------------------
   1097 # Public sister of _AM_SUBST_NOTMAKE.
   1098 AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
   1099 
   1100 # Check how to create a tarball.                            -*- Autoconf -*-
   1101 
   1102 # Copyright (C) 2004-2018 Free Software Foundation, Inc.
   1103 #
   1104 # This file is free software; the Free Software Foundation
   1105 # gives unlimited permission to copy and/or distribute it,
   1106 # with or without modifications, as long as this notice is preserved.
   1107 
   1108 # _AM_PROG_TAR(FORMAT)
   1109 # --------------------
   1110 # Check how to create a tarball in format FORMAT.
   1111 # FORMAT should be one of 'v7', 'ustar', or 'pax'.
   1112 #
   1113 # Substitute a variable $(am__tar) that is a command
   1114 # writing to stdout a FORMAT-tarball containing the directory
   1115 # $tardir.
   1116 #     tardir=directory && $(am__tar) > result.tar
   1117 #
   1118 # Substitute a variable $(am__untar) that extract such
   1119 # a tarball read from stdin.
   1120 #     $(am__untar) < result.tar
   1121 #
   1122 AC_DEFUN([_AM_PROG_TAR],
   1123 [# Always define AMTAR for backward compatibility.  Yes, it's still used
   1124 # in the wild :-(  We should find a proper way to deprecate it ...
   1125 AC_SUBST([AMTAR], ['$${TAR-tar}'])
   1126 
   1127 # We'll loop over all known methods to create a tar archive until one works.
   1128 _am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
   1129 
   1130 m4_if([$1], [v7],
   1131   [am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'],
   1132 
   1133   [m4_case([$1],
   1134     [ustar],
   1135      [# The POSIX 1988 'ustar' format is defined with fixed-size fields.
   1136       # There is notably a 21 bits limit for the UID and the GID.  In fact,
   1137       # the 'pax' utility can hang on bigger UID/GID (see automake bug#8343
   1138       # and bug#13588).
   1139       am_max_uid=2097151 # 2^21 - 1
   1140       am_max_gid=$am_max_uid
   1141       # The $UID and $GID variables are not portable, so we need to resort
   1142       # to the POSIX-mandated id(1) utility.  Errors in the 'id' calls
   1143       # below are definitely unexpected, so allow the users to see them
   1144       # (that is, avoid stderr redirection).
   1145       am_uid=`id -u || echo unknown`
   1146       am_gid=`id -g || echo unknown`
   1147       AC_MSG_CHECKING([whether UID '$am_uid' is supported by ustar format])
   1148       if test $am_uid -le $am_max_uid; then
   1149          AC_MSG_RESULT([yes])
   1150       else
   1151          AC_MSG_RESULT([no])
   1152          _am_tools=none
   1153       fi
   1154       AC_MSG_CHECKING([whether GID '$am_gid' is supported by ustar format])
   1155       if test $am_gid -le $am_max_gid; then
   1156          AC_MSG_RESULT([yes])
   1157       else
   1158         AC_MSG_RESULT([no])
   1159         _am_tools=none
   1160       fi],
   1161 
   1162   [pax],
   1163     [],
   1164 
   1165   [m4_fatal([Unknown tar format])])
   1166 
   1167   AC_MSG_CHECKING([how to create a $1 tar archive])
   1168 
   1169   # Go ahead even if we have the value already cached.  We do so because we
   1170   # need to set the values for the 'am__tar' and 'am__untar' variables.
   1171   _am_tools=${am_cv_prog_tar_$1-$_am_tools}
   1172 
   1173   for _am_tool in $_am_tools; do
   1174     case $_am_tool in
   1175     gnutar)
   1176       for _am_tar in tar gnutar gtar; do
   1177         AM_RUN_LOG([$_am_tar --version]) && break
   1178       done
   1179       am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"'
   1180       am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"'
   1181       am__untar="$_am_tar -xf -"
   1182       ;;
   1183     plaintar)
   1184       # Must skip GNU tar: if it does not support --format= it doesn't create
   1185       # ustar tarball either.
   1186       (tar --version) >/dev/null 2>&1 && continue
   1187       am__tar='tar chf - "$$tardir"'
   1188       am__tar_='tar chf - "$tardir"'
   1189       am__untar='tar xf -'
   1190       ;;
   1191     pax)
   1192       am__tar='pax -L -x $1 -w "$$tardir"'
   1193       am__tar_='pax -L -x $1 -w "$tardir"'
   1194       am__untar='pax -r'
   1195       ;;
   1196     cpio)
   1197       am__tar='find "$$tardir" -print | cpio -o -H $1 -L'
   1198       am__tar_='find "$tardir" -print | cpio -o -H $1 -L'
   1199       am__untar='cpio -i -H $1 -d'
   1200       ;;
   1201     none)
   1202       am__tar=false
   1203       am__tar_=false
   1204       am__untar=false
   1205       ;;
   1206     esac
   1207 
   1208     # If the value was cached, stop now.  We just wanted to have am__tar
   1209     # and am__untar set.
   1210     test -n "${am_cv_prog_tar_$1}" && break
   1211 
   1212     # tar/untar a dummy directory, and stop if the command works.
   1213     rm -rf conftest.dir
   1214     mkdir conftest.dir
   1215     echo GrepMe > conftest.dir/file
   1216     AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar])
   1217     rm -rf conftest.dir
   1218     if test -s conftest.tar; then
   1219       AM_RUN_LOG([$am__untar <conftest.tar])
   1220       AM_RUN_LOG([cat conftest.dir/file])
   1221       grep GrepMe conftest.dir/file >/dev/null 2>&1 && break
   1222     fi
   1223   done
   1224   rm -rf conftest.dir
   1225 
   1226   AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])
   1227   AC_MSG_RESULT([$am_cv_prog_tar_$1])])
   1228 
   1229 AC_SUBST([am__tar])
   1230 AC_SUBST([am__untar])
   1231 ]) # _AM_PROG_TAR
   1232 
   1233 m4_include([m4/ax_have_epoll.m4])
   1234 m4_include([m4/ax_pthread.m4])
   1235 m4_include([m4/libtool.m4])
   1236 m4_include([m4/ltoptions.m4])
   1237 m4_include([m4/ltsugar.m4])
   1238 m4_include([m4/ltversion.m4])
   1239 m4_include([m4/lt~obsolete.m4])
   1240 m4_include([m4/pkg.m4])