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    1 # generated automatically by aclocal 1.16.3 -*- Autoconf -*-
    2 
    3 # Copyright (C) 1996-2020 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 
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   23 # Copyright (C) 2002-2020 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.
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   59 # AM_AUX_DIR_EXPAND                                         -*- Autoconf -*-
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   61 # Copyright (C) 2001-2020 Free Software Foundation, Inc.
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  111 # AM_COND_IF                                            -*- Autoconf -*-
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  113 # Copyright (C) 2008-2020 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.
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  119 # _AM_COND_IF
  120 # _AM_COND_ELSE
  121 # _AM_COND_ENDIF
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  148 # AM_CONDITIONAL                                            -*- Autoconf -*-
  149 
  150 # Copyright (C) 1997-2020 Free Software Foundation, Inc.
  151 #
  152 # This file is free software; the Free Software Foundation
  153 # gives unlimited permission to copy and/or distribute it,
  154 # with or without modifications, as long as this notice is preserved.
  155 
  156 # AM_CONDITIONAL(NAME, SHELL-CONDITION)
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  180 
  181 # Copyright (C) 1999-2020 Free Software Foundation, Inc.
  182 #
  183 # This file is free software; the Free Software Foundation
  184 # gives unlimited permission to copy and/or distribute it,
  185 # with or without modifications, as long as this notice is preserved.
  186 
  187 
  188 # There are a few dirty hacks below to avoid letting 'AC_PROG_CC' be
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  194 
  195 # _AM_DEPENDENCIES(NAME)
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  209 AC_REQUIRE([AM_DEP_TRACK])dnl
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  239   mkdir sub
  240 
  241   am_cv_$1_dependencies_compiler_type=none
  242   if test "$am_compiler_list" = ""; then
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  255   for depmode in $am_compiler_list; do
  256     # Setup a source with many dependencies, because some compilers
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  259     #
  260     # We need to recreate these files for each test, as the compiler may
  261     # overwrite some of them when testing with obscure command lines.
  262     # This happens at least with the AIX C compiler.
  263     : > sub/conftest.c
  264     for i in 1 2 3 4 5 6; do
  265       echo '#include "conftst'$i'.h"' >> sub/conftest.c
  266       # Using ": > sub/conftst$i.h" creates only sub/conftst1.h with
  267       # Solaris 10 /bin/sh.
  268       echo '/* dummy */' > sub/conftst$i.h
  269     done
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  272     # We check with '-c' and '-o' for the sake of the "dashmstdout"
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  287 	continue
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  289 	break
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  292     msvc7 | msvc7msys | msvisualcpp | msvcmsys)
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  296       am__obj=conftest.${OBJEXT-o}
  297       am__minus_obj=
  298       ;;
  299     none) break ;;
  300     esac
  301     if depmode=$depmode \
  302        source=sub/conftest.c object=$am__obj \
  303        depfile=sub/conftest.Po tmpdepfile=sub/conftest.TPo \
  304        $SHELL ./depcomp $depcc -c $am__minus_obj sub/conftest.c \
  305          >/dev/null 2>conftest.err &&
  306        grep sub/conftst1.h sub/conftest.Po > /dev/null 2>&1 &&
  307        grep sub/conftst6.h sub/conftest.Po > /dev/null 2>&1 &&
  308        grep $am__obj sub/conftest.Po > /dev/null 2>&1 &&
  309        ${MAKE-make} -s -f confmf > /dev/null 2>&1; then
  310       # icc doesn't choke on unknown options, it will just issue warnings
  311       # or remarks (even with -Werror).  So we grep stderr for any message
  312       # that says an option was ignored or not supported.
  313       # When given -MP, icc 7.0 and 7.1 complain thusly:
  314       #   icc: Command line warning: ignoring option '-M'; no argument required
  315       # The diagnosis changed in icc 8.0:
  316       #   icc: Command line remark: option '-MP' not supported
  317       if (grep 'ignoring option' conftest.err ||
  318           grep 'not supported' conftest.err) >/dev/null 2>&1; then :; else
  319         am_cv_$1_dependencies_compiler_type=$depmode
  320         break
  321       fi
  322     fi
  323   done
  324 
  325   cd ..
  326   rm -rf conftest.dir
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  328   am_cv_$1_dependencies_compiler_type=none
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  331 AC_SUBST([$1DEPMODE], [depmode=$am_cv_$1_dependencies_compiler_type])
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  334   && test "$am_cv_$1_dependencies_compiler_type" = gcc3])
  335 ])
  336 
  337 
  338 # AM_SET_DEPDIR
  339 # -------------
  340 # Choose a directory name for dependency files.
  341 # This macro is AC_REQUIREd in _AM_DEPENDENCIES.
  342 AC_DEFUN([AM_SET_DEPDIR],
  343 [AC_REQUIRE([AM_SET_LEADING_DOT])dnl
  344 AC_SUBST([DEPDIR], ["${am__leading_dot}deps"])dnl
  345 ])
  346 
  347 
  348 # AM_DEP_TRACK
  349 # ------------
  350 AC_DEFUN([AM_DEP_TRACK],
  351 [AC_ARG_ENABLE([dependency-tracking], [dnl
  352 AS_HELP_STRING(
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  354   [do not reject slow dependency extractors])
  355 AS_HELP_STRING(
  356   [--disable-dependency-tracking],
  357   [speeds up one-time build])])
  358 if test "x$enable_dependency_tracking" != xno; then
  359   am_depcomp="$ac_aux_dir/depcomp"
  360   AMDEPBACKSLASH='\'
  361   am__nodep='_no'
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  363 AM_CONDITIONAL([AMDEP], [test "x$enable_dependency_tracking" != xno])
  364 AC_SUBST([AMDEPBACKSLASH])dnl
  365 _AM_SUBST_NOTMAKE([AMDEPBACKSLASH])dnl
  366 AC_SUBST([am__nodep])dnl
  367 _AM_SUBST_NOTMAKE([am__nodep])dnl
  368 ])
  369 
  370 # Generate code to set up dependency tracking.              -*- Autoconf -*-
  371 
  372 # Copyright (C) 1999-2020 Free Software Foundation, Inc.
  373 #
  374 # This file is free software; the Free Software Foundation
  375 # gives unlimited permission to copy and/or distribute it,
  376 # with or without modifications, as long as this notice is preserved.
  377 
  378 # _AM_OUTPUT_DEPENDENCY_COMMANDS
  379 # ------------------------------
  380 AC_DEFUN([_AM_OUTPUT_DEPENDENCY_COMMANDS],
  381 [{
  382   # Older Autoconf quotes --file arguments for eval, but not when files
  383   # are listed without --file.  Let's play safe and only enable the eval
  384   # if we detect the quoting.
  385   # TODO: see whether this extra hack can be removed once we start
  386   # requiring Autoconf 2.70 or later.
  387   AS_CASE([$CONFIG_FILES],
  388           [*\'*], [eval set x "$CONFIG_FILES"],
  389           [*], [set x $CONFIG_FILES])
  390   shift
  391   # Used to flag and report bootstrapping failures.
  392   am_rc=0
  393   for am_mf
  394   do
  395     # Strip MF so we end up with the name of the file.
  396     am_mf=`AS_ECHO(["$am_mf"]) | sed -e 's/:.*$//'`
  397     # Check whether this is an Automake generated Makefile which includes
  398     # dependency-tracking related rules and includes.
  399     # Grep'ing the whole file directly is not great: AIX grep has a line
  400     # limit of 2048, but all sed's we know have understand at least 4000.
  401     sed -n 's,^am--depfiles:.*,X,p' "$am_mf" | grep X >/dev/null 2>&1 \
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  404     am_filepart=`AS_BASENAME(["$am_mf"])`
  405     AM_RUN_LOG([cd "$am_dirpart" \
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  407         | $MAKE -f - am--depfiles]) || am_rc=$?
  408   done
  409   if test $am_rc -ne 0; then
  410     AC_MSG_FAILURE([Something went wrong bootstrapping makefile fragments
  411     for automatic dependency tracking.  If GNU make was not used, consider
  412     re-running the configure script with MAKE="gmake" (or whatever is
  413     necessary).  You can also try re-running configure with the
  414     '--disable-dependency-tracking' option to at least be able to build
  415     the package (albeit without support for automatic dependency tracking).])
  416   fi
  417   AS_UNSET([am_dirpart])
  418   AS_UNSET([am_filepart])
  419   AS_UNSET([am_mf])
  420   AS_UNSET([am_rc])
  421   rm -f conftest-deps.mk
  422 }
  423 ])# _AM_OUTPUT_DEPENDENCY_COMMANDS
  424 
  425 
  426 # AM_OUTPUT_DEPENDENCY_COMMANDS
  427 # -----------------------------
  428 # This macro should only be invoked once -- use via AC_REQUIRE.
  429 #
  430 # This code is only required when automatic dependency tracking is enabled.
  431 # This creates each '.Po' and '.Plo' makefile fragment that we'll need in
  432 # order to bootstrap the dependency handling code.
  433 AC_DEFUN([AM_OUTPUT_DEPENDENCY_COMMANDS],
  434 [AC_CONFIG_COMMANDS([depfiles],
  435      [test x"$AMDEP_TRUE" != x"" || _AM_OUTPUT_DEPENDENCY_COMMANDS],
  436      [AMDEP_TRUE="$AMDEP_TRUE" MAKE="${MAKE-make}"])])
  437 
  438 # Do all the work for Automake.                             -*- Autoconf -*-
  439 
  440 # Copyright (C) 1996-2020 Free Software Foundation, Inc.
  441 #
  442 # This file is free software; the Free Software Foundation
  443 # gives unlimited permission to copy and/or distribute it,
  444 # with or without modifications, as long as this notice is preserved.
  445 
  446 # This macro actually does too much.  Some checks are only needed if
  447 # your package does certain things.  But this isn't really a big deal.
  448 
  449 dnl Redefine AC_PROG_CC to automatically invoke _AM_PROG_CC_C_O.
  450 m4_define([AC_PROG_CC],
  451 m4_defn([AC_PROG_CC])
  452 [_AM_PROG_CC_C_O
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  454 
  455 # AM_INIT_AUTOMAKE(PACKAGE, VERSION, [NO-DEFINE])
  456 # AM_INIT_AUTOMAKE([OPTIONS])
  457 # -----------------------------------------------
  458 # The call with PACKAGE and VERSION arguments is the old style
  459 # call (pre autoconf-2.50), which is being phased out.  PACKAGE
  460 # and VERSION should now be passed to AC_INIT and removed from
  461 # the call to AM_INIT_AUTOMAKE.
  462 # We support both call styles for the transition.  After
  463 # the next Automake release, Autoconf can make the AC_INIT
  464 # arguments mandatory, and then we can depend on a new Autoconf
  465 # release and drop the old call support.
  466 AC_DEFUN([AM_INIT_AUTOMAKE],
  467 [AC_PREREQ([2.65])dnl
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  470 m4_pattern_allow([^AM_[A-Z]+FLAGS$])dnl
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  472 AC_REQUIRE([AC_PROG_INSTALL])dnl
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  476   AC_SUBST([am__isrc], [' -I$(srcdir)'])_AM_SUBST_NOTMAKE([am__isrc])dnl
  477   # test to see if srcdir already configured
  478   if test -f $srcdir/config.status; then
  479     AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
  480   fi
  481 fi
  482 
  483 # test whether we have cygpath
  484 if test -z "$CYGPATH_W"; then
  485   if (cygpath --version) >/dev/null 2>/dev/null; then
  486     CYGPATH_W='cygpath -w'
  487   else
  488     CYGPATH_W=echo
  489   fi
  490 fi
  491 AC_SUBST([CYGPATH_W])
  492 
  493 # Define the identity of the package.
  494 dnl Distinguish between old-style and new-style calls.
  495 m4_ifval([$2],
  496 [AC_DIAGNOSE([obsolete],
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  498 m4_ifval([$3], [_AM_SET_OPTION([no-define])])dnl
  499  AC_SUBST([PACKAGE], [$1])dnl
  500  AC_SUBST([VERSION], [$2])],
  501 [_AM_SET_OPTIONS([$1])dnl
  502 dnl Diagnose old-style AC_INIT with new-style AM_AUTOMAKE_INIT.
  503 m4_if(
  504   m4_ifdef([AC_PACKAGE_NAME], [ok]):m4_ifdef([AC_PACKAGE_VERSION], [ok]),
  505   [ok:ok],,
  506   [m4_fatal([AC_INIT should be called with package and version arguments])])dnl
  507  AC_SUBST([PACKAGE], ['AC_PACKAGE_TARNAME'])dnl
  508  AC_SUBST([VERSION], ['AC_PACKAGE_VERSION'])])dnl
  509 
  510 _AM_IF_OPTION([no-define],,
  511 [AC_DEFINE_UNQUOTED([PACKAGE], ["$PACKAGE"], [Name of package])
  512  AC_DEFINE_UNQUOTED([VERSION], ["$VERSION"], [Version number of package])])dnl
  513 
  514 # Some tools Automake needs.
  515 AC_REQUIRE([AM_SANITY_CHECK])dnl
  516 AC_REQUIRE([AC_ARG_PROGRAM])dnl
  517 AM_MISSING_PROG([ACLOCAL], [aclocal-${am__api_version}])
  518 AM_MISSING_PROG([AUTOCONF], [autoconf])
  519 AM_MISSING_PROG([AUTOMAKE], [automake-${am__api_version}])
  520 AM_MISSING_PROG([AUTOHEADER], [autoheader])
  521 AM_MISSING_PROG([MAKEINFO], [makeinfo])
  522 AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
  523 AC_REQUIRE([AM_PROG_INSTALL_STRIP])dnl
  524 AC_REQUIRE([AC_PROG_MKDIR_P])dnl
  525 # For better backward compatibility.  To be removed once Automake 1.9.x
  526 # dies out for good.  For more background, see:
  527 # <https://lists.gnu.org/archive/html/automake/2012-07/msg00001.html>
  528 # <https://lists.gnu.org/archive/html/automake/2012-07/msg00014.html>
  529 AC_SUBST([mkdir_p], ['$(MKDIR_P)'])
  530 # We need awk for the "check" target (and possibly the TAP driver).  The
  531 # system "awk" is bad on some platforms.
  532 AC_REQUIRE([AC_PROG_AWK])dnl
  533 AC_REQUIRE([AC_PROG_MAKE_SET])dnl
  534 AC_REQUIRE([AM_SET_LEADING_DOT])dnl
  535 _AM_IF_OPTION([tar-ustar], [_AM_PROG_TAR([ustar])],
  536 	      [_AM_IF_OPTION([tar-pax], [_AM_PROG_TAR([pax])],
  537 			     [_AM_PROG_TAR([v7])])])
  538 _AM_IF_OPTION([no-dependencies],,
  539 [AC_PROVIDE_IFELSE([AC_PROG_CC],
  540 		  [_AM_DEPENDENCIES([CC])],
  541 		  [m4_define([AC_PROG_CC],
  542 			     m4_defn([AC_PROG_CC])[_AM_DEPENDENCIES([CC])])])dnl
  543 AC_PROVIDE_IFELSE([AC_PROG_CXX],
  544 		  [_AM_DEPENDENCIES([CXX])],
  545 		  [m4_define([AC_PROG_CXX],
  546 			     m4_defn([AC_PROG_CXX])[_AM_DEPENDENCIES([CXX])])])dnl
  547 AC_PROVIDE_IFELSE([AC_PROG_OBJC],
  548 		  [_AM_DEPENDENCIES([OBJC])],
  549 		  [m4_define([AC_PROG_OBJC],
  550 			     m4_defn([AC_PROG_OBJC])[_AM_DEPENDENCIES([OBJC])])])dnl
  551 AC_PROVIDE_IFELSE([AC_PROG_OBJCXX],
  552 		  [_AM_DEPENDENCIES([OBJCXX])],
  553 		  [m4_define([AC_PROG_OBJCXX],
  554 			     m4_defn([AC_PROG_OBJCXX])[_AM_DEPENDENCIES([OBJCXX])])])dnl
  555 ])
  556 AC_REQUIRE([AM_SILENT_RULES])dnl
  557 dnl The testsuite driver may need to know about EXEEXT, so add the
  558 dnl 'am__EXEEXT' conditional if _AM_COMPILER_EXEEXT was seen.  This
  559 dnl macro is hooked onto _AC_COMPILER_EXEEXT early, see below.
  560 AC_CONFIG_COMMANDS_PRE(dnl
  561 [m4_provide_if([_AM_COMPILER_EXEEXT],
  562   [AM_CONDITIONAL([am__EXEEXT], [test -n "$EXEEXT"])])])dnl
  563 
  564 # POSIX will say in a future version that running "rm -f" with no argument
  565 # is OK; and we want to be able to make that assumption in our Makefile
  566 # recipes.  So use an aggressive probe to check that the usage we want is
  567 # actually supported "in the wild" to an acceptable degree.
  568 # See automake bug#10828.
  569 # To make any issue more visible, cause the running configure to be aborted
  570 # by default if the 'rm' program in use doesn't match our expectations; the
  571 # user can still override this though.
  572 if rm -f && rm -fr && rm -rf; then : OK; else
  573   cat >&2 <<'END'
  574 Oops!
  575 
  576 Your 'rm' program seems unable to run without file operands specified
  577 on the command line, even when the '-f' option is present.  This is contrary
  578 to the behaviour of most rm programs out there, and not conforming with
  579 the upcoming POSIX standard: <http://austingroupbugs.net/view.php?id=542>
  580 
  581 Please tell bug-automake@gnu.org about your system, including the value
  582 of your $PATH and any error possibly output before this message.  This
  583 can help us improve future automake versions.
  584 
  585 END
  586   if test x"$ACCEPT_INFERIOR_RM_PROGRAM" = x"yes"; then
  587     echo 'Configuration will proceed anyway, since you have set the' >&2
  588     echo 'ACCEPT_INFERIOR_RM_PROGRAM variable to "yes"' >&2
  589     echo >&2
  590   else
  591     cat >&2 <<'END'
  592 Aborting the configuration process, to ensure you take notice of the issue.
  593 
  594 You can download and install GNU coreutils to get an 'rm' implementation
  595 that behaves properly: <https://www.gnu.org/software/coreutils/>.
  596 
  597 If you want to complete the configuration process using your problematic
  598 'rm' anyway, export the environment variable ACCEPT_INFERIOR_RM_PROGRAM
  599 to "yes", and re-run configure.
  600 
  601 END
  602     AC_MSG_ERROR([Your 'rm' program is bad, sorry.])
  603   fi
  604 fi
  605 dnl The trailing newline in this macro's definition is deliberate, for
  606 dnl backward compatibility and to allow trailing 'dnl'-style comments
  607 dnl after the AM_INIT_AUTOMAKE invocation. See automake bug#16841.
  608 ])
  609 
  610 dnl Hook into '_AC_COMPILER_EXEEXT' early to learn its expansion.  Do not
  611 dnl add the conditional right here, as _AC_COMPILER_EXEEXT may be further
  612 dnl mangled by Autoconf and run in a shell conditional statement.
  613 m4_define([_AC_COMPILER_EXEEXT],
  614 m4_defn([_AC_COMPILER_EXEEXT])[m4_provide([_AM_COMPILER_EXEEXT])])
  615 
  616 # When config.status generates a header, we must update the stamp-h file.
  617 # This file resides in the same directory as the config header
  618 # that is generated.  The stamp files are numbered to have different names.
  619 
  620 # Autoconf calls _AC_AM_CONFIG_HEADER_HOOK (when defined) in the
  621 # loop where config.status creates the headers, so we can generate
  622 # our stamp files there.
  623 AC_DEFUN([_AC_AM_CONFIG_HEADER_HOOK],
  624 [# Compute $1's index in $config_headers.
  625 _am_arg=$1
  626 _am_stamp_count=1
  627 for _am_header in $config_headers :; do
  628   case $_am_header in
  629     $_am_arg | $_am_arg:* )
  630       break ;;
  631     * )
  632       _am_stamp_count=`expr $_am_stamp_count + 1` ;;
  633   esac
  634 done
  635 echo "timestamp for $_am_arg" >`AS_DIRNAME(["$_am_arg"])`/stamp-h[]$_am_stamp_count])
  636 
  637 # Copyright (C) 2001-2020 Free Software Foundation, Inc.
  638 #
  639 # This file is free software; the Free Software Foundation
  640 # gives unlimited permission to copy and/or distribute it,
  641 # with or without modifications, as long as this notice is preserved.
  642 
  643 # AM_PROG_INSTALL_SH
  644 # ------------------
  645 # Define $install_sh.
  646 AC_DEFUN([AM_PROG_INSTALL_SH],
  647 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
  648 if test x"${install_sh+set}" != xset; then
  649   case $am_aux_dir in
  650   *\ * | *\	*)
  651     install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
  652   *)
  653     install_sh="\${SHELL} $am_aux_dir/install-sh"
  654   esac
  655 fi
  656 AC_SUBST([install_sh])])
  657 
  658 # Copyright (C) 2003-2020 Free Software Foundation, Inc.
  659 #
  660 # This file is free software; the Free Software Foundation
  661 # gives unlimited permission to copy and/or distribute it,
  662 # with or without modifications, as long as this notice is preserved.
  663 
  664 # Check whether the underlying file-system supports filenames
  665 # with a leading dot.  For instance MS-DOS doesn't.
  666 AC_DEFUN([AM_SET_LEADING_DOT],
  667 [rm -rf .tst 2>/dev/null
  668 mkdir .tst 2>/dev/null
  669 if test -d .tst; then
  670   am__leading_dot=.
  671 else
  672   am__leading_dot=_
  673 fi
  674 rmdir .tst 2>/dev/null
  675 AC_SUBST([am__leading_dot])])
  676 
  677 # Add --enable-maintainer-mode option to configure.         -*- Autoconf -*-
  678 # From Jim Meyering
  679 
  680 # Copyright (C) 1996-2020 Free Software Foundation, Inc.
  681 #
  682 # This file is free software; the Free Software Foundation
  683 # gives unlimited permission to copy and/or distribute it,
  684 # with or without modifications, as long as this notice is preserved.
  685 
  686 # AM_MAINTAINER_MODE([DEFAULT-MODE])
  687 # ----------------------------------
  688 # Control maintainer-specific portions of Makefiles.
  689 # Default is to disable them, unless 'enable' is passed literally.
  690 # For symmetry, 'disable' may be passed as well.  Anyway, the user
  691 # can override the default with the --enable/--disable switch.
  692 AC_DEFUN([AM_MAINTAINER_MODE],
  693 [m4_case(m4_default([$1], [disable]),
  694        [enable], [m4_define([am_maintainer_other], [disable])],
  695        [disable], [m4_define([am_maintainer_other], [enable])],
  696        [m4_define([am_maintainer_other], [enable])
  697         m4_warn([syntax], [unexpected argument to AM@&t@_MAINTAINER_MODE: $1])])
  698 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
  699   dnl maintainer-mode's default is 'disable' unless 'enable' is passed
  700   AC_ARG_ENABLE([maintainer-mode],
  701     [AS_HELP_STRING([--]am_maintainer_other[-maintainer-mode],
  702       am_maintainer_other[ make rules and dependencies not useful
  703       (and sometimes confusing) to the casual installer])],
  704     [USE_MAINTAINER_MODE=$enableval],
  705     [USE_MAINTAINER_MODE=]m4_if(am_maintainer_other, [enable], [no], [yes]))
  706   AC_MSG_RESULT([$USE_MAINTAINER_MODE])
  707   AM_CONDITIONAL([MAINTAINER_MODE], [test $USE_MAINTAINER_MODE = yes])
  708   MAINT=$MAINTAINER_MODE_TRUE
  709   AC_SUBST([MAINT])dnl
  710 ]
  711 )
  712 
  713 # Check to see how 'make' treats includes.	            -*- Autoconf -*-
  714 
  715 # Copyright (C) 2001-2020 Free Software Foundation, Inc.
  716 #
  717 # This file is free software; the Free Software Foundation
  718 # gives unlimited permission to copy and/or distribute it,
  719 # with or without modifications, as long as this notice is preserved.
  720 
  721 # AM_MAKE_INCLUDE()
  722 # -----------------
  723 # Check whether make has an 'include' directive that can support all
  724 # the idioms we need for our automatic dependency tracking code.
  725 AC_DEFUN([AM_MAKE_INCLUDE],
  726 [AC_MSG_CHECKING([whether ${MAKE-make} supports the include directive])
  727 cat > confinc.mk << 'END'
  728 am__doit:
  729 	@echo this is the am__doit target >confinc.out
  730 .PHONY: am__doit
  731 END
  732 am__include="#"
  733 am__quote=
  734 # BSD make does it like this.
  735 echo '.include "confinc.mk" # ignored' > confmf.BSD
  736 # Other make implementations (GNU, Solaris 10, AIX) do it like this.
  737 echo 'include confinc.mk # ignored' > confmf.GNU
  738 _am_result=no
  739 for s in GNU BSD; do
  740   AM_RUN_LOG([${MAKE-make} -f confmf.$s && cat confinc.out])
  741   AS_CASE([$?:`cat confinc.out 2>/dev/null`],
  742       ['0:this is the am__doit target'],
  743       [AS_CASE([$s],
  744           [BSD], [am__include='.include' am__quote='"'],
  745           [am__include='include' am__quote=''])])
  746   if test "$am__include" != "#"; then
  747     _am_result="yes ($s style)"
  748     break
  749   fi
  750 done
  751 rm -f confinc.* confmf.*
  752 AC_MSG_RESULT([${_am_result}])
  753 AC_SUBST([am__include])])
  754 AC_SUBST([am__quote])])
  755 
  756 # Fake the existence of programs that GNU maintainers use.  -*- Autoconf -*-
  757 
  758 # Copyright (C) 1997-2020 Free Software Foundation, Inc.
  759 #
  760 # This file is free software; the Free Software Foundation
  761 # gives unlimited permission to copy and/or distribute it,
  762 # with or without modifications, as long as this notice is preserved.
  763 
  764 # AM_MISSING_PROG(NAME, PROGRAM)
  765 # ------------------------------
  766 AC_DEFUN([AM_MISSING_PROG],
  767 [AC_REQUIRE([AM_MISSING_HAS_RUN])
  768 $1=${$1-"${am_missing_run}$2"}
  769 AC_SUBST($1)])
  770 
  771 # AM_MISSING_HAS_RUN
  772 # ------------------
  773 # Define MISSING if not defined so far and test if it is modern enough.
  774 # If it is, set am_missing_run to use it, otherwise, to nothing.
  775 AC_DEFUN([AM_MISSING_HAS_RUN],
  776 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
  777 AC_REQUIRE_AUX_FILE([missing])dnl
  778 if test x"${MISSING+set}" != xset; then
  779   MISSING="\${SHELL} '$am_aux_dir/missing'"
  780 fi
  781 # Use eval to expand $SHELL
  782 if eval "$MISSING --is-lightweight"; then
  783   am_missing_run="$MISSING "
  784 else
  785   am_missing_run=
  786   AC_MSG_WARN(['missing' script is too old or missing])
  787 fi
  788 ])
  789 
  790 # Helper functions for option handling.                     -*- Autoconf -*-
  791 
  792 # Copyright (C) 2001-2020 Free Software Foundation, Inc.
  793 #
  794 # This file is free software; the Free Software Foundation
  795 # gives unlimited permission to copy and/or distribute it,
  796 # with or without modifications, as long as this notice is preserved.
  797 
  798 # _AM_MANGLE_OPTION(NAME)
  799 # -----------------------
  800 AC_DEFUN([_AM_MANGLE_OPTION],
  801 [[_AM_OPTION_]m4_bpatsubst($1, [[^a-zA-Z0-9_]], [_])])
  802 
  803 # _AM_SET_OPTION(NAME)
  804 # --------------------
  805 # Set option NAME.  Presently that only means defining a flag for this option.
  806 AC_DEFUN([_AM_SET_OPTION],
  807 [m4_define(_AM_MANGLE_OPTION([$1]), [1])])
  808 
  809 # _AM_SET_OPTIONS(OPTIONS)
  810 # ------------------------
  811 # OPTIONS is a space-separated list of Automake options.
  812 AC_DEFUN([_AM_SET_OPTIONS],
  813 [m4_foreach_w([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])])
  814 
  815 # _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET])
  816 # -------------------------------------------
  817 # Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
  818 AC_DEFUN([_AM_IF_OPTION],
  819 [m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])
  820 
  821 # Copyright (C) 1999-2020 Free Software Foundation, Inc.
  822 #
  823 # This file is free software; the Free Software Foundation
  824 # gives unlimited permission to copy and/or distribute it,
  825 # with or without modifications, as long as this notice is preserved.
  826 
  827 # _AM_PROG_CC_C_O
  828 # ---------------
  829 # Like AC_PROG_CC_C_O, but changed for automake.  We rewrite AC_PROG_CC
  830 # to automatically call this.
  831 AC_DEFUN([_AM_PROG_CC_C_O],
  832 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
  833 AC_REQUIRE_AUX_FILE([compile])dnl
  834 AC_LANG_PUSH([C])dnl
  835 AC_CACHE_CHECK(
  836   [whether $CC understands -c and -o together],
  837   [am_cv_prog_cc_c_o],
  838   [AC_LANG_CONFTEST([AC_LANG_PROGRAM([])])
  839   # Make sure it works both with $CC and with simple cc.
  840   # Following AC_PROG_CC_C_O, we do the test twice because some
  841   # compilers refuse to overwrite an existing .o file with -o,
  842   # though they will create one.
  843   am_cv_prog_cc_c_o=yes
  844   for am_i in 1 2; do
  845     if AM_RUN_LOG([$CC -c conftest.$ac_ext -o conftest2.$ac_objext]) \
  846          && test -f conftest2.$ac_objext; then
  847       : OK
  848     else
  849       am_cv_prog_cc_c_o=no
  850       break
  851     fi
  852   done
  853   rm -f core conftest*
  854   unset am_i])
  855 if test "$am_cv_prog_cc_c_o" != yes; then
  856    # Losing compiler, so override with the script.
  857    # FIXME: It is wrong to rewrite CC.
  858    # But if we don't then we get into trouble of one sort or another.
  859    # A longer-term fix would be to have automake use am__CC in this case,
  860    # and then we could set am__CC="\$(top_srcdir)/compile \$(CC)"
  861    CC="$am_aux_dir/compile $CC"
  862 fi
  863 AC_LANG_POP([C])])
  864 
  865 # For backward compatibility.
  866 AC_DEFUN_ONCE([AM_PROG_CC_C_O], [AC_REQUIRE([AC_PROG_CC])])
  867 
  868 # Copyright (C) 2001-2020 Free Software Foundation, Inc.
  869 #
  870 # This file is free software; the Free Software Foundation
  871 # gives unlimited permission to copy and/or distribute it,
  872 # with or without modifications, as long as this notice is preserved.
  873 
  874 # AM_RUN_LOG(COMMAND)
  875 # -------------------
  876 # Run COMMAND, save the exit status in ac_status, and log it.
  877 # (This has been adapted from Autoconf's _AC_RUN_LOG macro.)
  878 AC_DEFUN([AM_RUN_LOG],
  879 [{ echo "$as_me:$LINENO: $1" >&AS_MESSAGE_LOG_FD
  880    ($1) >&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD
  881    ac_status=$?
  882    echo "$as_me:$LINENO: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
  883    (exit $ac_status); }])
  884 
  885 # Check to make sure that the build environment is sane.    -*- Autoconf -*-
  886 
  887 # Copyright (C) 1996-2020 Free Software Foundation, Inc.
  888 #
  889 # This file is free software; the Free Software Foundation
  890 # gives unlimited permission to copy and/or distribute it,
  891 # with or without modifications, as long as this notice is preserved.
  892 
  893 # AM_SANITY_CHECK
  894 # ---------------
  895 AC_DEFUN([AM_SANITY_CHECK],
  896 [AC_MSG_CHECKING([whether build environment is sane])
  897 # Reject unsafe characters in $srcdir or the absolute working directory
  898 # name.  Accept space and tab only in the latter.
  899 am_lf='
  900 '
  901 case `pwd` in
  902   *[[\\\"\#\$\&\'\`$am_lf]]*)
  903     AC_MSG_ERROR([unsafe absolute working directory name]);;
  904 esac
  905 case $srcdir in
  906   *[[\\\"\#\$\&\'\`$am_lf\ \	]]*)
  907     AC_MSG_ERROR([unsafe srcdir value: '$srcdir']);;
  908 esac
  909 
  910 # Do 'set' in a subshell so we don't clobber the current shell's
  911 # arguments.  Must try -L first in case configure is actually a
  912 # symlink; some systems play weird games with the mod time of symlinks
  913 # (eg FreeBSD returns the mod time of the symlink's containing
  914 # directory).
  915 if (
  916    am_has_slept=no
  917    for am_try in 1 2; do
  918      echo "timestamp, slept: $am_has_slept" > conftest.file
  919      set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
  920      if test "$[*]" = "X"; then
  921 	# -L didn't work.
  922 	set X `ls -t "$srcdir/configure" conftest.file`
  923      fi
  924      if test "$[*]" != "X $srcdir/configure conftest.file" \
  925 	&& test "$[*]" != "X conftest.file $srcdir/configure"; then
  926 
  927 	# If neither matched, then we have a broken ls.  This can happen
  928 	# if, for instance, CONFIG_SHELL is bash and it inherits a
  929 	# broken ls alias from the environment.  This has actually
  930 	# happened.  Such a system could not be considered "sane".
  931 	AC_MSG_ERROR([ls -t appears to fail.  Make sure there is not a broken
  932   alias in your environment])
  933      fi
  934      if test "$[2]" = conftest.file || test $am_try -eq 2; then
  935        break
  936      fi
  937      # Just in case.
  938      sleep 1
  939      am_has_slept=yes
  940    done
  941    test "$[2]" = conftest.file
  942    )
  943 then
  944    # Ok.
  945    :
  946 else
  947    AC_MSG_ERROR([newly created file is older than distributed files!
  948 Check your system clock])
  949 fi
  950 AC_MSG_RESULT([yes])
  951 # If we didn't sleep, we still need to ensure time stamps of config.status and
  952 # generated files are strictly newer.
  953 am_sleep_pid=
  954 if grep 'slept: no' conftest.file >/dev/null 2>&1; then
  955   ( sleep 1 ) &
  956   am_sleep_pid=$!
  957 fi
  958 AC_CONFIG_COMMANDS_PRE(
  959   [AC_MSG_CHECKING([that generated files are newer than configure])
  960    if test -n "$am_sleep_pid"; then
  961      # Hide warnings about reused PIDs.
  962      wait $am_sleep_pid 2>/dev/null
  963    fi
  964    AC_MSG_RESULT([done])])
  965 rm -f conftest.file
  966 ])
  967 
  968 # Copyright (C) 2009-2020 Free Software Foundation, Inc.
  969 #
  970 # This file is free software; the Free Software Foundation
  971 # gives unlimited permission to copy and/or distribute it,
  972 # with or without modifications, as long as this notice is preserved.
  973 
  974 # AM_SILENT_RULES([DEFAULT])
  975 # --------------------------
  976 # Enable less verbose build rules; with the default set to DEFAULT
  977 # ("yes" being less verbose, "no" or empty being verbose).
  978 AC_DEFUN([AM_SILENT_RULES],
  979 [AC_ARG_ENABLE([silent-rules], [dnl
  980 AS_HELP_STRING(
  981   [--enable-silent-rules],
  982   [less verbose build output (undo: "make V=1")])
  983 AS_HELP_STRING(
  984   [--disable-silent-rules],
  985   [verbose build output (undo: "make V=0")])dnl
  986 ])
  987 case $enable_silent_rules in @%:@ (((
  988   yes) AM_DEFAULT_VERBOSITY=0;;
  989    no) AM_DEFAULT_VERBOSITY=1;;
  990     *) AM_DEFAULT_VERBOSITY=m4_if([$1], [yes], [0], [1]);;
  991 esac
  992 dnl
  993 dnl A few 'make' implementations (e.g., NonStop OS and NextStep)
  994 dnl do not support nested variable expansions.
  995 dnl See automake bug#9928 and bug#10237.
  996 am_make=${MAKE-make}
  997 AC_CACHE_CHECK([whether $am_make supports nested variables],
  998    [am_cv_make_support_nested_variables],
  999    [if AS_ECHO([['TRUE=$(BAR$(V))
 1000 BAR0=false
 1001 BAR1=true
 1002 V=1
 1003 am__doit:
 1004 	@$(TRUE)
 1005 .PHONY: am__doit']]) | $am_make -f - >/dev/null 2>&1; then
 1006   am_cv_make_support_nested_variables=yes
 1007 else
 1008   am_cv_make_support_nested_variables=no
 1009 fi])
 1010 if test $am_cv_make_support_nested_variables = yes; then
 1011   dnl Using '$V' instead of '$(V)' breaks IRIX make.
 1012   AM_V='$(V)'
 1013   AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
 1014 else
 1015   AM_V=$AM_DEFAULT_VERBOSITY
 1016   AM_DEFAULT_V=$AM_DEFAULT_VERBOSITY
 1017 fi
 1018 AC_SUBST([AM_V])dnl
 1019 AM_SUBST_NOTMAKE([AM_V])dnl
 1020 AC_SUBST([AM_DEFAULT_V])dnl
 1021 AM_SUBST_NOTMAKE([AM_DEFAULT_V])dnl
 1022 AC_SUBST([AM_DEFAULT_VERBOSITY])dnl
 1023 AM_BACKSLASH='\'
 1024 AC_SUBST([AM_BACKSLASH])dnl
 1025 _AM_SUBST_NOTMAKE([AM_BACKSLASH])dnl
 1026 ])
 1027 
 1028 # Copyright (C) 2001-2020 Free Software Foundation, Inc.
 1029 #
 1030 # This file is free software; the Free Software Foundation
 1031 # gives unlimited permission to copy and/or distribute it,
 1032 # with or without modifications, as long as this notice is preserved.
 1033 
 1034 # AM_PROG_INSTALL_STRIP
 1035 # ---------------------
 1036 # One issue with vendor 'install' (even GNU) is that you can't
 1037 # specify the program used to strip binaries.  This is especially
 1038 # annoying in cross-compiling environments, where the build's strip
 1039 # is unlikely to handle the host's binaries.
 1040 # Fortunately install-sh will honor a STRIPPROG variable, so we
 1041 # always use install-sh in "make install-strip", and initialize
 1042 # STRIPPROG with the value of the STRIP variable (set by the user).
 1043 AC_DEFUN([AM_PROG_INSTALL_STRIP],
 1044 [AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
 1045 # Installed binaries are usually stripped using 'strip' when the user
 1046 # run "make install-strip".  However 'strip' might not be the right
 1047 # tool to use in cross-compilation environments, therefore Automake
 1048 # will honor the 'STRIP' environment variable to overrule this program.
 1049 dnl Don't test for $cross_compiling = yes, because it might be 'maybe'.
 1050 if test "$cross_compiling" != no; then
 1051   AC_CHECK_TOOL([STRIP], [strip], :)
 1052 fi
 1053 INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
 1054 AC_SUBST([INSTALL_STRIP_PROGRAM])])
 1055 
 1056 # Copyright (C) 2006-2020 Free Software Foundation, Inc.
 1057 #
 1058 # This file is free software; the Free Software Foundation
 1059 # gives unlimited permission to copy and/or distribute it,
 1060 # with or without modifications, as long as this notice is preserved.
 1061 
 1062 # _AM_SUBST_NOTMAKE(VARIABLE)
 1063 # ---------------------------
 1064 # Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in.
 1065 # This macro is traced by Automake.
 1066 AC_DEFUN([_AM_SUBST_NOTMAKE])
 1067 
 1068 # AM_SUBST_NOTMAKE(VARIABLE)
 1069 # --------------------------
 1070 # Public sister of _AM_SUBST_NOTMAKE.
 1071 AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
 1072 
 1073 # Check how to create a tarball.                            -*- Autoconf -*-
 1074 
 1075 # Copyright (C) 2004-2020 Free Software Foundation, Inc.
 1076 #
 1077 # This file is free software; the Free Software Foundation
 1078 # gives unlimited permission to copy and/or distribute it,
 1079 # with or without modifications, as long as this notice is preserved.
 1080 
 1081 # _AM_PROG_TAR(FORMAT)
 1082 # --------------------
 1083 # Check how to create a tarball in format FORMAT.
 1084 # FORMAT should be one of 'v7', 'ustar', or 'pax'.
 1085 #
 1086 # Substitute a variable $(am__tar) that is a command
 1087 # writing to stdout a FORMAT-tarball containing the directory
 1088 # $tardir.
 1089 #     tardir=directory && $(am__tar) > result.tar
 1090 #
 1091 # Substitute a variable $(am__untar) that extract such
 1092 # a tarball read from stdin.
 1093 #     $(am__untar) < result.tar
 1094 #
 1095 AC_DEFUN([_AM_PROG_TAR],
 1096 [# Always define AMTAR for backward compatibility.  Yes, it's still used
 1097 # in the wild :-(  We should find a proper way to deprecate it ...
 1098 AC_SUBST([AMTAR], ['$${TAR-tar}'])
 1099 
 1100 # We'll loop over all known methods to create a tar archive until one works.
 1101 _am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
 1102 
 1103 m4_if([$1], [v7],
 1104   [am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'],
 1105 
 1106   [m4_case([$1],
 1107     [ustar],
 1108      [# The POSIX 1988 'ustar' format is defined with fixed-size fields.
 1109       # There is notably a 21 bits limit for the UID and the GID.  In fact,
 1110       # the 'pax' utility can hang on bigger UID/GID (see automake bug#8343
 1111       # and bug#13588).
 1112       am_max_uid=2097151 # 2^21 - 1
 1113       am_max_gid=$am_max_uid
 1114       # The $UID and $GID variables are not portable, so we need to resort
 1115       # to the POSIX-mandated id(1) utility.  Errors in the 'id' calls
 1116       # below are definitely unexpected, so allow the users to see them
 1117       # (that is, avoid stderr redirection).
 1118       am_uid=`id -u || echo unknown`
 1119       am_gid=`id -g || echo unknown`
 1120       AC_MSG_CHECKING([whether UID '$am_uid' is supported by ustar format])
 1121       if test $am_uid -le $am_max_uid; then
 1122          AC_MSG_RESULT([yes])
 1123       else
 1124          AC_MSG_RESULT([no])
 1125          _am_tools=none
 1126       fi
 1127       AC_MSG_CHECKING([whether GID '$am_gid' is supported by ustar format])
 1128       if test $am_gid -le $am_max_gid; then
 1129          AC_MSG_RESULT([yes])
 1130       else
 1131         AC_MSG_RESULT([no])
 1132         _am_tools=none
 1133       fi],
 1134 
 1135   [pax],
 1136     [],
 1137 
 1138   [m4_fatal([Unknown tar format])])
 1139 
 1140   AC_MSG_CHECKING([how to create a $1 tar archive])
 1141 
 1142   # Go ahead even if we have the value already cached.  We do so because we
 1143   # need to set the values for the 'am__tar' and 'am__untar' variables.
 1144   _am_tools=${am_cv_prog_tar_$1-$_am_tools}
 1145 
 1146   for _am_tool in $_am_tools; do
 1147     case $_am_tool in
 1148     gnutar)
 1149       for _am_tar in tar gnutar gtar; do
 1150         AM_RUN_LOG([$_am_tar --version]) && break
 1151       done
 1152       am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"'
 1153       am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"'
 1154       am__untar="$_am_tar -xf -"
 1155       ;;
 1156     plaintar)
 1157       # Must skip GNU tar: if it does not support --format= it doesn't create
 1158       # ustar tarball either.
 1159       (tar --version) >/dev/null 2>&1 && continue
 1160       am__tar='tar chf - "$$tardir"'
 1161       am__tar_='tar chf - "$tardir"'
 1162       am__untar='tar xf -'
 1163       ;;
 1164     pax)
 1165       am__tar='pax -L -x $1 -w "$$tardir"'
 1166       am__tar_='pax -L -x $1 -w "$tardir"'
 1167       am__untar='pax -r'
 1168       ;;
 1169     cpio)
 1170       am__tar='find "$$tardir" -print | cpio -o -H $1 -L'
 1171       am__tar_='find "$tardir" -print | cpio -o -H $1 -L'
 1172       am__untar='cpio -i -H $1 -d'
 1173       ;;
 1174     none)
 1175       am__tar=false
 1176       am__tar_=false
 1177       am__untar=false
 1178       ;;
 1179     esac
 1180 
 1181     # If the value was cached, stop now.  We just wanted to have am__tar
 1182     # and am__untar set.
 1183     test -n "${am_cv_prog_tar_$1}" && break
 1184 
 1185     # tar/untar a dummy directory, and stop if the command works.
 1186     rm -rf conftest.dir
 1187     mkdir conftest.dir
 1188     echo GrepMe > conftest.dir/file
 1189     AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar])
 1190     rm -rf conftest.dir
 1191     if test -s conftest.tar; then
 1192       AM_RUN_LOG([$am__untar <conftest.tar])
 1193       AM_RUN_LOG([cat conftest.dir/file])
 1194       grep GrepMe conftest.dir/file >/dev/null 2>&1 && break
 1195     fi
 1196   done
 1197   rm -rf conftest.dir
 1198 
 1199   AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])
 1200   AC_MSG_RESULT([$am_cv_prog_tar_$1])])
 1201 
 1202 AC_SUBST([am__tar])
 1203 AC_SUBST([am__untar])
 1204 ]) # _AM_PROG_TAR
 1205 
 1206 m4_include([m4/ax_cxx_compile_stdcxx.m4])