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    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 
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   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,
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   59 # AM_AUX_DIR_EXPAND                                         -*- Autoconf -*-
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   61 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
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  113 # Copyright (C) 1997-2018 Free Software Foundation, Inc.
  114 #
  115 # This file is free software; the Free Software Foundation
  116 # gives unlimited permission to copy and/or distribute it,
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  119 # AM_CONDITIONAL(NAME, SHELL-CONDITION)
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  144 # Copyright (C) 1999-2018 Free Software Foundation, Inc.
  145 #
  146 # This file is free software; the Free Software Foundation
  147 # gives unlimited permission to copy and/or distribute it,
  148 # with or without modifications, as long as this notice is preserved.
  149 
  150 
  151 # There are a few dirty hacks below to avoid letting 'AC_PROG_CC' be
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  204   am_cv_$1_dependencies_compiler_type=none
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  226     : > sub/conftest.c
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  252 	break
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  255     msvc7 | msvc7msys | msvisualcpp | msvcmsys)
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  259       am__obj=conftest.${OBJEXT-o}
  260       am__minus_obj=
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  262     none) break ;;
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  265        source=sub/conftest.c object=$am__obj \
  266        depfile=sub/conftest.Po tmpdepfile=sub/conftest.TPo \
  267        $SHELL ./depcomp $depcc -c $am__minus_obj sub/conftest.c \
  268          >/dev/null 2>conftest.err &&
  269        grep sub/conftst1.h sub/conftest.Po > /dev/null 2>&1 &&
  270        grep sub/conftst6.h sub/conftest.Po > /dev/null 2>&1 &&
  271        grep $am__obj sub/conftest.Po > /dev/null 2>&1 &&
  272        ${MAKE-make} -s -f confmf > /dev/null 2>&1; then
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  282         am_cv_$1_dependencies_compiler_type=$depmode
  283         break
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  288   cd ..
  289   rm -rf conftest.dir
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  291   am_cv_$1_dependencies_compiler_type=none
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  294 AC_SUBST([$1DEPMODE], [depmode=$am_cv_$1_dependencies_compiler_type])
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  299 
  300 
  301 # AM_SET_DEPDIR
  302 # -------------
  303 # Choose a directory name for dependency files.
  304 # This macro is AC_REQUIREd in _AM_DEPENDENCIES.
  305 AC_DEFUN([AM_SET_DEPDIR],
  306 [AC_REQUIRE([AM_SET_LEADING_DOT])dnl
  307 AC_SUBST([DEPDIR], ["${am__leading_dot}deps"])dnl
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  310 
  311 # AM_DEP_TRACK
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  314 [AC_ARG_ENABLE([dependency-tracking], [dnl
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  321 if test "x$enable_dependency_tracking" != xno; then
  322   am_depcomp="$ac_aux_dir/depcomp"
  323   AMDEPBACKSLASH='\'
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  332 
  333 # Generate code to set up dependency tracking.              -*- Autoconf -*-
  334 
  335 # Copyright (C) 1999-2018 Free Software Foundation, Inc.
  336 #
  337 # This file is free software; the Free Software Foundation
  338 # gives unlimited permission to copy and/or distribute it,
  339 # with or without modifications, as long as this notice is preserved.
  340 
  341 # _AM_OUTPUT_DEPENDENCY_COMMANDS
  342 # ------------------------------
  343 AC_DEFUN([_AM_OUTPUT_DEPENDENCY_COMMANDS],
  344 [{
  345   # Older Autoconf quotes --file arguments for eval, but not when files
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  348   # TODO: see whether this extra hack can be removed once we start
  349   # requiring Autoconf 2.70 or later.
  350   AS_CASE([$CONFIG_FILES],
  351           [*\'*], [eval set x "$CONFIG_FILES"],
  352           [*], [set x $CONFIG_FILES])
  353   shift
  354   # Used to flag and report bootstrapping failures.
  355   am_rc=0
  356   for am_mf
  357   do
  358     # Strip MF so we end up with the name of the file.
  359     am_mf=`AS_ECHO(["$am_mf"]) | sed -e 's/:.*$//'`
  360     # Check whether this is an Automake generated Makefile which includes
  361     # dependency-tracking related rules and includes.
  362     # Grep'ing the whole file directly is not great: AIX grep has a line
  363     # limit of 2048, but all sed's we know have understand at least 4000.
  364     sed -n 's,^am--depfiles:.*,X,p' "$am_mf" | grep X >/dev/null 2>&1 \
  365       || continue
  366     am_dirpart=`AS_DIRNAME(["$am_mf"])`
  367     am_filepart=`AS_BASENAME(["$am_mf"])`
  368     AM_RUN_LOG([cd "$am_dirpart" \
  369       && sed -e '/# am--include-marker/d' "$am_filepart" \
  370         | $MAKE -f - am--depfiles]) || am_rc=$?
  371   done
  372   if test $am_rc -ne 0; then
  373     AC_MSG_FAILURE([Something went wrong bootstrapping makefile fragments
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  375     '--disable-dependency-tracking' option to at least be able to build
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  378   AS_UNSET([am_dirpart])
  379   AS_UNSET([am_filepart])
  380   AS_UNSET([am_mf])
  381   AS_UNSET([am_rc])
  382   rm -f conftest-deps.mk
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  384 ])# _AM_OUTPUT_DEPENDENCY_COMMANDS
  385 
  386 
  387 # AM_OUTPUT_DEPENDENCY_COMMANDS
  388 # -----------------------------
  389 # This macro should only be invoked once -- use via AC_REQUIRE.
  390 #
  391 # This code is only required when automatic dependency tracking is enabled.
  392 # This creates each '.Po' and '.Plo' makefile fragment that we'll need in
  393 # order to bootstrap the dependency handling code.
  394 AC_DEFUN([AM_OUTPUT_DEPENDENCY_COMMANDS],
  395 [AC_CONFIG_COMMANDS([depfiles],
  396      [test x"$AMDEP_TRUE" != x"" || _AM_OUTPUT_DEPENDENCY_COMMANDS],
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  398 
  399 # Do all the work for Automake.                             -*- Autoconf -*-
  400 
  401 # Copyright (C) 1996-2018 Free Software Foundation, Inc.
  402 #
  403 # This file is free software; the Free Software Foundation
  404 # gives unlimited permission to copy and/or distribute it,
  405 # with or without modifications, as long as this notice is preserved.
  406 
  407 # This macro actually does too much.  Some checks are only needed if
  408 # your package does certain things.  But this isn't really a big deal.
  409 
  410 dnl Redefine AC_PROG_CC to automatically invoke _AM_PROG_CC_C_O.
  411 m4_define([AC_PROG_CC],
  412 m4_defn([AC_PROG_CC])
  413 [_AM_PROG_CC_C_O
  414 ])
  415 
  416 # AM_INIT_AUTOMAKE(PACKAGE, VERSION, [NO-DEFINE])
  417 # AM_INIT_AUTOMAKE([OPTIONS])
  418 # -----------------------------------------------
  419 # The call with PACKAGE and VERSION arguments is the old style
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  423 # We support both call styles for the transition.  After
  424 # the next Automake release, Autoconf can make the AC_INIT
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  427 AC_DEFUN([AM_INIT_AUTOMAKE],
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  430 dnl the ones we care about.
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  433 AC_REQUIRE([AC_PROG_INSTALL])dnl
  434 if test "`cd $srcdir && pwd`" != "`pwd`"; then
  435   # Use -I$(srcdir) only when $(srcdir) != ., so that make's output
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  437   AC_SUBST([am__isrc], [' -I$(srcdir)'])_AM_SUBST_NOTMAKE([am__isrc])dnl
  438   # test to see if srcdir already configured
  439   if test -f $srcdir/config.status; then
  440     AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
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  442 fi
  443 
  444 # test whether we have cygpath
  445 if test -z "$CYGPATH_W"; then
  446   if (cygpath --version) >/dev/null 2>/dev/null; then
  447     CYGPATH_W='cygpath -w'
  448   else
  449     CYGPATH_W=echo
  450   fi
  451 fi
  452 AC_SUBST([CYGPATH_W])
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  454 # Define the identity of the package.
  455 dnl Distinguish between old-style and new-style calls.
  456 m4_ifval([$2],
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  459 m4_ifval([$3], [_AM_SET_OPTION([no-define])])dnl
  460  AC_SUBST([PACKAGE], [$1])dnl
  461  AC_SUBST([VERSION], [$2])],
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  468  AC_SUBST([PACKAGE], ['AC_PACKAGE_TARNAME'])dnl
  469  AC_SUBST([VERSION], ['AC_PACKAGE_VERSION'])])dnl
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  471 _AM_IF_OPTION([no-define],,
  472 [AC_DEFINE_UNQUOTED([PACKAGE], ["$PACKAGE"], [Name of package])
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  474 
  475 # Some tools Automake needs.
  476 AC_REQUIRE([AM_SANITY_CHECK])dnl
  477 AC_REQUIRE([AC_ARG_PROGRAM])dnl
  478 AM_MISSING_PROG([ACLOCAL], [aclocal-${am__api_version}])
  479 AM_MISSING_PROG([AUTOCONF], [autoconf])
  480 AM_MISSING_PROG([AUTOMAKE], [automake-${am__api_version}])
  481 AM_MISSING_PROG([AUTOHEADER], [autoheader])
  482 AM_MISSING_PROG([MAKEINFO], [makeinfo])
  483 AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
  484 AC_REQUIRE([AM_PROG_INSTALL_STRIP])dnl
  485 AC_REQUIRE([AC_PROG_MKDIR_P])dnl
  486 # For better backward compatibility.  To be removed once Automake 1.9.x
  487 # dies out for good.  For more background, see:
  488 # <https://lists.gnu.org/archive/html/automake/2012-07/msg00001.html>
  489 # <https://lists.gnu.org/archive/html/automake/2012-07/msg00014.html>
  490 AC_SUBST([mkdir_p], ['$(MKDIR_P)'])
  491 # We need awk for the "check" target (and possibly the TAP driver).  The
  492 # system "awk" is bad on some platforms.
  493 AC_REQUIRE([AC_PROG_AWK])dnl
  494 AC_REQUIRE([AC_PROG_MAKE_SET])dnl
  495 AC_REQUIRE([AM_SET_LEADING_DOT])dnl
  496 _AM_IF_OPTION([tar-ustar], [_AM_PROG_TAR([ustar])],
  497 	      [_AM_IF_OPTION([tar-pax], [_AM_PROG_TAR([pax])],
  498 			     [_AM_PROG_TAR([v7])])])
  499 _AM_IF_OPTION([no-dependencies],,
  500 [AC_PROVIDE_IFELSE([AC_PROG_CC],
  501 		  [_AM_DEPENDENCIES([CC])],
  502 		  [m4_define([AC_PROG_CC],
  503 			     m4_defn([AC_PROG_CC])[_AM_DEPENDENCIES([CC])])])dnl
  504 AC_PROVIDE_IFELSE([AC_PROG_CXX],
  505 		  [_AM_DEPENDENCIES([CXX])],
  506 		  [m4_define([AC_PROG_CXX],
  507 			     m4_defn([AC_PROG_CXX])[_AM_DEPENDENCIES([CXX])])])dnl
  508 AC_PROVIDE_IFELSE([AC_PROG_OBJC],
  509 		  [_AM_DEPENDENCIES([OBJC])],
  510 		  [m4_define([AC_PROG_OBJC],
  511 			     m4_defn([AC_PROG_OBJC])[_AM_DEPENDENCIES([OBJC])])])dnl
  512 AC_PROVIDE_IFELSE([AC_PROG_OBJCXX],
  513 		  [_AM_DEPENDENCIES([OBJCXX])],
  514 		  [m4_define([AC_PROG_OBJCXX],
  515 			     m4_defn([AC_PROG_OBJCXX])[_AM_DEPENDENCIES([OBJCXX])])])dnl
  516 ])
  517 AC_REQUIRE([AM_SILENT_RULES])dnl
  518 dnl The testsuite driver may need to know about EXEEXT, so add the
  519 dnl 'am__EXEEXT' conditional if _AM_COMPILER_EXEEXT was seen.  This
  520 dnl macro is hooked onto _AC_COMPILER_EXEEXT early, see below.
  521 AC_CONFIG_COMMANDS_PRE(dnl
  522 [m4_provide_if([_AM_COMPILER_EXEEXT],
  523   [AM_CONDITIONAL([am__EXEEXT], [test -n "$EXEEXT"])])])dnl
  524 
  525 # POSIX will say in a future version that running "rm -f" with no argument
  526 # is OK; and we want to be able to make that assumption in our Makefile
  527 # recipes.  So use an aggressive probe to check that the usage we want is
  528 # actually supported "in the wild" to an acceptable degree.
  529 # See automake bug#10828.
  530 # To make any issue more visible, cause the running configure to be aborted
  531 # by default if the 'rm' program in use doesn't match our expectations; the
  532 # user can still override this though.
  533 if rm -f && rm -fr && rm -rf; then : OK; else
  534   cat >&2 <<'END'
  535 Oops!
  536 
  537 Your 'rm' program seems unable to run without file operands specified
  538 on the command line, even when the '-f' option is present.  This is contrary
  539 to the behaviour of most rm programs out there, and not conforming with
  540 the upcoming POSIX standard: <http://austingroupbugs.net/view.php?id=542>
  541 
  542 Please tell bug-automake@gnu.org about your system, including the value
  543 of your $PATH and any error possibly output before this message.  This
  544 can help us improve future automake versions.
  545 
  546 END
  547   if test x"$ACCEPT_INFERIOR_RM_PROGRAM" = x"yes"; then
  548     echo 'Configuration will proceed anyway, since you have set the' >&2
  549     echo 'ACCEPT_INFERIOR_RM_PROGRAM variable to "yes"' >&2
  550     echo >&2
  551   else
  552     cat >&2 <<'END'
  553 Aborting the configuration process, to ensure you take notice of the issue.
  554 
  555 You can download and install GNU coreutils to get an 'rm' implementation
  556 that behaves properly: <https://www.gnu.org/software/coreutils/>.
  557 
  558 If you want to complete the configuration process using your problematic
  559 'rm' anyway, export the environment variable ACCEPT_INFERIOR_RM_PROGRAM
  560 to "yes", and re-run configure.
  561 
  562 END
  563     AC_MSG_ERROR([Your 'rm' program is bad, sorry.])
  564   fi
  565 fi
  566 dnl The trailing newline in this macro's definition is deliberate, for
  567 dnl backward compatibility and to allow trailing 'dnl'-style comments
  568 dnl after the AM_INIT_AUTOMAKE invocation. See automake bug#16841.
  569 ])
  570 
  571 dnl Hook into '_AC_COMPILER_EXEEXT' early to learn its expansion.  Do not
  572 dnl add the conditional right here, as _AC_COMPILER_EXEEXT may be further
  573 dnl mangled by Autoconf and run in a shell conditional statement.
  574 m4_define([_AC_COMPILER_EXEEXT],
  575 m4_defn([_AC_COMPILER_EXEEXT])[m4_provide([_AM_COMPILER_EXEEXT])])
  576 
  577 # When config.status generates a header, we must update the stamp-h file.
  578 # This file resides in the same directory as the config header
  579 # that is generated.  The stamp files are numbered to have different names.
  580 
  581 # Autoconf calls _AC_AM_CONFIG_HEADER_HOOK (when defined) in the
  582 # loop where config.status creates the headers, so we can generate
  583 # our stamp files there.
  584 AC_DEFUN([_AC_AM_CONFIG_HEADER_HOOK],
  585 [# Compute $1's index in $config_headers.
  586 _am_arg=$1
  587 _am_stamp_count=1
  588 for _am_header in $config_headers :; do
  589   case $_am_header in
  590     $_am_arg | $_am_arg:* )
  591       break ;;
  592     * )
  593       _am_stamp_count=`expr $_am_stamp_count + 1` ;;
  594   esac
  595 done
  596 echo "timestamp for $_am_arg" >`AS_DIRNAME(["$_am_arg"])`/stamp-h[]$_am_stamp_count])
  597 
  598 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
  599 #
  600 # This file is free software; the Free Software Foundation
  601 # gives unlimited permission to copy and/or distribute it,
  602 # with or without modifications, as long as this notice is preserved.
  603 
  604 # AM_PROG_INSTALL_SH
  605 # ------------------
  606 # Define $install_sh.
  607 AC_DEFUN([AM_PROG_INSTALL_SH],
  608 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
  609 if test x"${install_sh+set}" != xset; then
  610   case $am_aux_dir in
  611   *\ * | *\	*)
  612     install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
  613   *)
  614     install_sh="\${SHELL} $am_aux_dir/install-sh"
  615   esac
  616 fi
  617 AC_SUBST([install_sh])])
  618 
  619 # Copyright (C) 2003-2018 Free Software Foundation, Inc.
  620 #
  621 # This file is free software; the Free Software Foundation
  622 # gives unlimited permission to copy and/or distribute it,
  623 # with or without modifications, as long as this notice is preserved.
  624 
  625 # Check whether the underlying file-system supports filenames
  626 # with a leading dot.  For instance MS-DOS doesn't.
  627 AC_DEFUN([AM_SET_LEADING_DOT],
  628 [rm -rf .tst 2>/dev/null
  629 mkdir .tst 2>/dev/null
  630 if test -d .tst; then
  631   am__leading_dot=.
  632 else
  633   am__leading_dot=_
  634 fi
  635 rmdir .tst 2>/dev/null
  636 AC_SUBST([am__leading_dot])])
  637 
  638 # Add --enable-maintainer-mode option to configure.         -*- Autoconf -*-
  639 # From Jim Meyering
  640 
  641 # Copyright (C) 1996-2018 Free Software Foundation, Inc.
  642 #
  643 # This file is free software; the Free Software Foundation
  644 # gives unlimited permission to copy and/or distribute it,
  645 # with or without modifications, as long as this notice is preserved.
  646 
  647 # AM_MAINTAINER_MODE([DEFAULT-MODE])
  648 # ----------------------------------
  649 # Control maintainer-specific portions of Makefiles.
  650 # Default is to disable them, unless 'enable' is passed literally.
  651 # For symmetry, 'disable' may be passed as well.  Anyway, the user
  652 # can override the default with the --enable/--disable switch.
  653 AC_DEFUN([AM_MAINTAINER_MODE],
  654 [m4_case(m4_default([$1], [disable]),
  655        [enable], [m4_define([am_maintainer_other], [disable])],
  656        [disable], [m4_define([am_maintainer_other], [enable])],
  657        [m4_define([am_maintainer_other], [enable])
  658         m4_warn([syntax], [unexpected argument to AM@&t@_MAINTAINER_MODE: $1])])
  659 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
  660   dnl maintainer-mode's default is 'disable' unless 'enable' is passed
  661   AC_ARG_ENABLE([maintainer-mode],
  662     [AS_HELP_STRING([--]am_maintainer_other[-maintainer-mode],
  663       am_maintainer_other[ make rules and dependencies not useful
  664       (and sometimes confusing) to the casual installer])],
  665     [USE_MAINTAINER_MODE=$enableval],
  666     [USE_MAINTAINER_MODE=]m4_if(am_maintainer_other, [enable], [no], [yes]))
  667   AC_MSG_RESULT([$USE_MAINTAINER_MODE])
  668   AM_CONDITIONAL([MAINTAINER_MODE], [test $USE_MAINTAINER_MODE = yes])
  669   MAINT=$MAINTAINER_MODE_TRUE
  670   AC_SUBST([MAINT])dnl
  671 ]
  672 )
  673 
  674 # Check to see how 'make' treats includes.	            -*- Autoconf -*-
  675 
  676 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
  677 #
  678 # This file is free software; the Free Software Foundation
  679 # gives unlimited permission to copy and/or distribute it,
  680 # with or without modifications, as long as this notice is preserved.
  681 
  682 # AM_MAKE_INCLUDE()
  683 # -----------------
  684 # Check whether make has an 'include' directive that can support all
  685 # the idioms we need for our automatic dependency tracking code.
  686 AC_DEFUN([AM_MAKE_INCLUDE],
  687 [AC_MSG_CHECKING([whether ${MAKE-make} supports the include directive])
  688 cat > confinc.mk << 'END'
  689 am__doit:
  690 	@echo this is the am__doit target >confinc.out
  691 .PHONY: am__doit
  692 END
  693 am__include="#"
  694 am__quote=
  695 # BSD make does it like this.
  696 echo '.include "confinc.mk" # ignored' > confmf.BSD
  697 # Other make implementations (GNU, Solaris 10, AIX) do it like this.
  698 echo 'include confinc.mk # ignored' > confmf.GNU
  699 _am_result=no
  700 for s in GNU BSD; do
  701   AM_RUN_LOG([${MAKE-make} -f confmf.$s && cat confinc.out])
  702   AS_CASE([$?:`cat confinc.out 2>/dev/null`],
  703       ['0:this is the am__doit target'],
  704       [AS_CASE([$s],
  705           [BSD], [am__include='.include' am__quote='"'],
  706           [am__include='include' am__quote=''])])
  707   if test "$am__include" != "#"; then
  708     _am_result="yes ($s style)"
  709     break
  710   fi
  711 done
  712 rm -f confinc.* confmf.*
  713 AC_MSG_RESULT([${_am_result}])
  714 AC_SUBST([am__include])])
  715 AC_SUBST([am__quote])])
  716 
  717 # Fake the existence of programs that GNU maintainers use.  -*- Autoconf -*-
  718 
  719 # Copyright (C) 1997-2018 Free Software Foundation, Inc.
  720 #
  721 # This file is free software; the Free Software Foundation
  722 # gives unlimited permission to copy and/or distribute it,
  723 # with or without modifications, as long as this notice is preserved.
  724 
  725 # AM_MISSING_PROG(NAME, PROGRAM)
  726 # ------------------------------
  727 AC_DEFUN([AM_MISSING_PROG],
  728 [AC_REQUIRE([AM_MISSING_HAS_RUN])
  729 $1=${$1-"${am_missing_run}$2"}
  730 AC_SUBST($1)])
  731 
  732 # AM_MISSING_HAS_RUN
  733 # ------------------
  734 # Define MISSING if not defined so far and test if it is modern enough.
  735 # If it is, set am_missing_run to use it, otherwise, to nothing.
  736 AC_DEFUN([AM_MISSING_HAS_RUN],
  737 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
  738 AC_REQUIRE_AUX_FILE([missing])dnl
  739 if test x"${MISSING+set}" != xset; then
  740   case $am_aux_dir in
  741   *\ * | *\	*)
  742     MISSING="\${SHELL} \"$am_aux_dir/missing\"" ;;
  743   *)
  744     MISSING="\${SHELL} $am_aux_dir/missing" ;;
  745   esac
  746 fi
  747 # Use eval to expand $SHELL
  748 if eval "$MISSING --is-lightweight"; then
  749   am_missing_run="$MISSING "
  750 else
  751   am_missing_run=
  752   AC_MSG_WARN(['missing' script is too old or missing])
  753 fi
  754 ])
  755 
  756 # Helper functions for option handling.                     -*- Autoconf -*-
  757 
  758 # Copyright (C) 2001-2018 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_MANGLE_OPTION(NAME)
  765 # -----------------------
  766 AC_DEFUN([_AM_MANGLE_OPTION],
  767 [[_AM_OPTION_]m4_bpatsubst($1, [[^a-zA-Z0-9_]], [_])])
  768 
  769 # _AM_SET_OPTION(NAME)
  770 # --------------------
  771 # Set option NAME.  Presently that only means defining a flag for this option.
  772 AC_DEFUN([_AM_SET_OPTION],
  773 [m4_define(_AM_MANGLE_OPTION([$1]), [1])])
  774 
  775 # _AM_SET_OPTIONS(OPTIONS)
  776 # ------------------------
  777 # OPTIONS is a space-separated list of Automake options.
  778 AC_DEFUN([_AM_SET_OPTIONS],
  779 [m4_foreach_w([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])])
  780 
  781 # _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET])
  782 # -------------------------------------------
  783 # Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
  784 AC_DEFUN([_AM_IF_OPTION],
  785 [m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])
  786 
  787 # Copyright (C) 1999-2018 Free Software Foundation, Inc.
  788 #
  789 # This file is free software; the Free Software Foundation
  790 # gives unlimited permission to copy and/or distribute it,
  791 # with or without modifications, as long as this notice is preserved.
  792 
  793 # _AM_PROG_CC_C_O
  794 # ---------------
  795 # Like AC_PROG_CC_C_O, but changed for automake.  We rewrite AC_PROG_CC
  796 # to automatically call this.
  797 AC_DEFUN([_AM_PROG_CC_C_O],
  798 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
  799 AC_REQUIRE_AUX_FILE([compile])dnl
  800 AC_LANG_PUSH([C])dnl
  801 AC_CACHE_CHECK(
  802   [whether $CC understands -c and -o together],
  803   [am_cv_prog_cc_c_o],
  804   [AC_LANG_CONFTEST([AC_LANG_PROGRAM([])])
  805   # Make sure it works both with $CC and with simple cc.
  806   # Following AC_PROG_CC_C_O, we do the test twice because some
  807   # compilers refuse to overwrite an existing .o file with -o,
  808   # though they will create one.
  809   am_cv_prog_cc_c_o=yes
  810   for am_i in 1 2; do
  811     if AM_RUN_LOG([$CC -c conftest.$ac_ext -o conftest2.$ac_objext]) \
  812          && test -f conftest2.$ac_objext; then
  813       : OK
  814     else
  815       am_cv_prog_cc_c_o=no
  816       break
  817     fi
  818   done
  819   rm -f core conftest*
  820   unset am_i])
  821 if test "$am_cv_prog_cc_c_o" != yes; then
  822    # Losing compiler, so override with the script.
  823    # FIXME: It is wrong to rewrite CC.
  824    # But if we don't then we get into trouble of one sort or another.
  825    # A longer-term fix would be to have automake use am__CC in this case,
  826    # and then we could set am__CC="\$(top_srcdir)/compile \$(CC)"
  827    CC="$am_aux_dir/compile $CC"
  828 fi
  829 AC_LANG_POP([C])])
  830 
  831 # For backward compatibility.
  832 AC_DEFUN_ONCE([AM_PROG_CC_C_O], [AC_REQUIRE([AC_PROG_CC])])
  833 
  834 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
  835 #
  836 # This file is free software; the Free Software Foundation
  837 # gives unlimited permission to copy and/or distribute it,
  838 # with or without modifications, as long as this notice is preserved.
  839 
  840 # AM_RUN_LOG(COMMAND)
  841 # -------------------
  842 # Run COMMAND, save the exit status in ac_status, and log it.
  843 # (This has been adapted from Autoconf's _AC_RUN_LOG macro.)
  844 AC_DEFUN([AM_RUN_LOG],
  845 [{ echo "$as_me:$LINENO: $1" >&AS_MESSAGE_LOG_FD
  846    ($1) >&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD
  847    ac_status=$?
  848    echo "$as_me:$LINENO: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
  849    (exit $ac_status); }])
  850 
  851 # Check to make sure that the build environment is sane.    -*- Autoconf -*-
  852 
  853 # Copyright (C) 1996-2018 Free Software Foundation, Inc.
  854 #
  855 # This file is free software; the Free Software Foundation
  856 # gives unlimited permission to copy and/or distribute it,
  857 # with or without modifications, as long as this notice is preserved.
  858 
  859 # AM_SANITY_CHECK
  860 # ---------------
  861 AC_DEFUN([AM_SANITY_CHECK],
  862 [AC_MSG_CHECKING([whether build environment is sane])
  863 # Reject unsafe characters in $srcdir or the absolute working directory
  864 # name.  Accept space and tab only in the latter.
  865 am_lf='
  866 '
  867 case `pwd` in
  868   *[[\\\"\#\$\&\'\`$am_lf]]*)
  869     AC_MSG_ERROR([unsafe absolute working directory name]);;
  870 esac
  871 case $srcdir in
  872   *[[\\\"\#\$\&\'\`$am_lf\ \	]]*)
  873     AC_MSG_ERROR([unsafe srcdir value: '$srcdir']);;
  874 esac
  875 
  876 # Do 'set' in a subshell so we don't clobber the current shell's
  877 # arguments.  Must try -L first in case configure is actually a
  878 # symlink; some systems play weird games with the mod time of symlinks
  879 # (eg FreeBSD returns the mod time of the symlink's containing
  880 # directory).
  881 if (
  882    am_has_slept=no
  883    for am_try in 1 2; do
  884      echo "timestamp, slept: $am_has_slept" > conftest.file
  885      set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
  886      if test "$[*]" = "X"; then
  887 	# -L didn't work.
  888 	set X `ls -t "$srcdir/configure" conftest.file`
  889      fi
  890      if test "$[*]" != "X $srcdir/configure conftest.file" \
  891 	&& test "$[*]" != "X conftest.file $srcdir/configure"; then
  892 
  893 	# If neither matched, then we have a broken ls.  This can happen
  894 	# if, for instance, CONFIG_SHELL is bash and it inherits a
  895 	# broken ls alias from the environment.  This has actually
  896 	# happened.  Such a system could not be considered "sane".
  897 	AC_MSG_ERROR([ls -t appears to fail.  Make sure there is not a broken
  898   alias in your environment])
  899      fi
  900      if test "$[2]" = conftest.file || test $am_try -eq 2; then
  901        break
  902      fi
  903      # Just in case.
  904      sleep 1
  905      am_has_slept=yes
  906    done
  907    test "$[2]" = conftest.file
  908    )
  909 then
  910    # Ok.
  911    :
  912 else
  913    AC_MSG_ERROR([newly created file is older than distributed files!
  914 Check your system clock])
  915 fi
  916 AC_MSG_RESULT([yes])
  917 # If we didn't sleep, we still need to ensure time stamps of config.status and
  918 # generated files are strictly newer.
  919 am_sleep_pid=
  920 if grep 'slept: no' conftest.file >/dev/null 2>&1; then
  921   ( sleep 1 ) &
  922   am_sleep_pid=$!
  923 fi
  924 AC_CONFIG_COMMANDS_PRE(
  925   [AC_MSG_CHECKING([that generated files are newer than configure])
  926    if test -n "$am_sleep_pid"; then
  927      # Hide warnings about reused PIDs.
  928      wait $am_sleep_pid 2>/dev/null
  929    fi
  930    AC_MSG_RESULT([done])])
  931 rm -f conftest.file
  932 ])
  933 
  934 # Copyright (C) 2009-2018 Free Software Foundation, Inc.
  935 #
  936 # This file is free software; the Free Software Foundation
  937 # gives unlimited permission to copy and/or distribute it,
  938 # with or without modifications, as long as this notice is preserved.
  939 
  940 # AM_SILENT_RULES([DEFAULT])
  941 # --------------------------
  942 # Enable less verbose build rules; with the default set to DEFAULT
  943 # ("yes" being less verbose, "no" or empty being verbose).
  944 AC_DEFUN([AM_SILENT_RULES],
  945 [AC_ARG_ENABLE([silent-rules], [dnl
  946 AS_HELP_STRING(
  947   [--enable-silent-rules],
  948   [less verbose build output (undo: "make V=1")])
  949 AS_HELP_STRING(
  950   [--disable-silent-rules],
  951   [verbose build output (undo: "make V=0")])dnl
  952 ])
  953 case $enable_silent_rules in @%:@ (((
  954   yes) AM_DEFAULT_VERBOSITY=0;;
  955    no) AM_DEFAULT_VERBOSITY=1;;
  956     *) AM_DEFAULT_VERBOSITY=m4_if([$1], [yes], [0], [1]);;
  957 esac
  958 dnl
  959 dnl A few 'make' implementations (e.g., NonStop OS and NextStep)
  960 dnl do not support nested variable expansions.
  961 dnl See automake bug#9928 and bug#10237.
  962 am_make=${MAKE-make}
  963 AC_CACHE_CHECK([whether $am_make supports nested variables],
  964    [am_cv_make_support_nested_variables],
  965    [if AS_ECHO([['TRUE=$(BAR$(V))
  966 BAR0=false
  967 BAR1=true
  968 V=1
  969 am__doit:
  970 	@$(TRUE)
  971 .PHONY: am__doit']]) | $am_make -f - >/dev/null 2>&1; then
  972   am_cv_make_support_nested_variables=yes
  973 else
  974   am_cv_make_support_nested_variables=no
  975 fi])
  976 if test $am_cv_make_support_nested_variables = yes; then
  977   dnl Using '$V' instead of '$(V)' breaks IRIX make.
  978   AM_V='$(V)'
  979   AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
  980 else
  981   AM_V=$AM_DEFAULT_VERBOSITY
  982   AM_DEFAULT_V=$AM_DEFAULT_VERBOSITY
  983 fi
  984 AC_SUBST([AM_V])dnl
  985 AM_SUBST_NOTMAKE([AM_V])dnl
  986 AC_SUBST([AM_DEFAULT_V])dnl
  987 AM_SUBST_NOTMAKE([AM_DEFAULT_V])dnl
  988 AC_SUBST([AM_DEFAULT_VERBOSITY])dnl
  989 AM_BACKSLASH='\'
  990 AC_SUBST([AM_BACKSLASH])dnl
  991 _AM_SUBST_NOTMAKE([AM_BACKSLASH])dnl
  992 ])
  993 
  994 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
  995 #
  996 # This file is free software; the Free Software Foundation
  997 # gives unlimited permission to copy and/or distribute it,
  998 # with or without modifications, as long as this notice is preserved.
  999 
 1000 # AM_PROG_INSTALL_STRIP
 1001 # ---------------------
 1002 # One issue with vendor 'install' (even GNU) is that you can't
 1003 # specify the program used to strip binaries.  This is especially
 1004 # annoying in cross-compiling environments, where the build's strip
 1005 # is unlikely to handle the host's binaries.
 1006 # Fortunately install-sh will honor a STRIPPROG variable, so we
 1007 # always use install-sh in "make install-strip", and initialize
 1008 # STRIPPROG with the value of the STRIP variable (set by the user).
 1009 AC_DEFUN([AM_PROG_INSTALL_STRIP],
 1010 [AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
 1011 # Installed binaries are usually stripped using 'strip' when the user
 1012 # run "make install-strip".  However 'strip' might not be the right
 1013 # tool to use in cross-compilation environments, therefore Automake
 1014 # will honor the 'STRIP' environment variable to overrule this program.
 1015 dnl Don't test for $cross_compiling = yes, because it might be 'maybe'.
 1016 if test "$cross_compiling" != no; then
 1017   AC_CHECK_TOOL([STRIP], [strip], :)
 1018 fi
 1019 INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
 1020 AC_SUBST([INSTALL_STRIP_PROGRAM])])
 1021 
 1022 # Copyright (C) 2006-2018 Free Software Foundation, Inc.
 1023 #
 1024 # This file is free software; the Free Software Foundation
 1025 # gives unlimited permission to copy and/or distribute it,
 1026 # with or without modifications, as long as this notice is preserved.
 1027 
 1028 # _AM_SUBST_NOTMAKE(VARIABLE)
 1029 # ---------------------------
 1030 # Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in.
 1031 # This macro is traced by Automake.
 1032 AC_DEFUN([_AM_SUBST_NOTMAKE])
 1033 
 1034 # AM_SUBST_NOTMAKE(VARIABLE)
 1035 # --------------------------
 1036 # Public sister of _AM_SUBST_NOTMAKE.
 1037 AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
 1038 
 1039 # Check how to create a tarball.                            -*- Autoconf -*-
 1040 
 1041 # Copyright (C) 2004-2018 Free Software Foundation, Inc.
 1042 #
 1043 # This file is free software; the Free Software Foundation
 1044 # gives unlimited permission to copy and/or distribute it,
 1045 # with or without modifications, as long as this notice is preserved.
 1046 
 1047 # _AM_PROG_TAR(FORMAT)
 1048 # --------------------
 1049 # Check how to create a tarball in format FORMAT.
 1050 # FORMAT should be one of 'v7', 'ustar', or 'pax'.
 1051 #
 1052 # Substitute a variable $(am__tar) that is a command
 1053 # writing to stdout a FORMAT-tarball containing the directory
 1054 # $tardir.
 1055 #     tardir=directory && $(am__tar) > result.tar
 1056 #
 1057 # Substitute a variable $(am__untar) that extract such
 1058 # a tarball read from stdin.
 1059 #     $(am__untar) < result.tar
 1060 #
 1061 AC_DEFUN([_AM_PROG_TAR],
 1062 [# Always define AMTAR for backward compatibility.  Yes, it's still used
 1063 # in the wild :-(  We should find a proper way to deprecate it ...
 1064 AC_SUBST([AMTAR], ['$${TAR-tar}'])
 1065 
 1066 # We'll loop over all known methods to create a tar archive until one works.
 1067 _am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
 1068 
 1069 m4_if([$1], [v7],
 1070   [am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'],
 1071 
 1072   [m4_case([$1],
 1073     [ustar],
 1074      [# The POSIX 1988 'ustar' format is defined with fixed-size fields.
 1075       # There is notably a 21 bits limit for the UID and the GID.  In fact,
 1076       # the 'pax' utility can hang on bigger UID/GID (see automake bug#8343
 1077       # and bug#13588).
 1078       am_max_uid=2097151 # 2^21 - 1
 1079       am_max_gid=$am_max_uid
 1080       # The $UID and $GID variables are not portable, so we need to resort
 1081       # to the POSIX-mandated id(1) utility.  Errors in the 'id' calls
 1082       # below are definitely unexpected, so allow the users to see them
 1083       # (that is, avoid stderr redirection).
 1084       am_uid=`id -u || echo unknown`
 1085       am_gid=`id -g || echo unknown`
 1086       AC_MSG_CHECKING([whether UID '$am_uid' is supported by ustar format])
 1087       if test $am_uid -le $am_max_uid; then
 1088          AC_MSG_RESULT([yes])
 1089       else
 1090          AC_MSG_RESULT([no])
 1091          _am_tools=none
 1092       fi
 1093       AC_MSG_CHECKING([whether GID '$am_gid' is supported by ustar format])
 1094       if test $am_gid -le $am_max_gid; then
 1095          AC_MSG_RESULT([yes])
 1096       else
 1097         AC_MSG_RESULT([no])
 1098         _am_tools=none
 1099       fi],
 1100 
 1101   [pax],
 1102     [],
 1103 
 1104   [m4_fatal([Unknown tar format])])
 1105 
 1106   AC_MSG_CHECKING([how to create a $1 tar archive])
 1107 
 1108   # Go ahead even if we have the value already cached.  We do so because we
 1109   # need to set the values for the 'am__tar' and 'am__untar' variables.
 1110   _am_tools=${am_cv_prog_tar_$1-$_am_tools}
 1111 
 1112   for _am_tool in $_am_tools; do
 1113     case $_am_tool in
 1114     gnutar)
 1115       for _am_tar in tar gnutar gtar; do
 1116         AM_RUN_LOG([$_am_tar --version]) && break
 1117       done
 1118       am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"'
 1119       am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"'
 1120       am__untar="$_am_tar -xf -"
 1121       ;;
 1122     plaintar)
 1123       # Must skip GNU tar: if it does not support --format= it doesn't create
 1124       # ustar tarball either.
 1125       (tar --version) >/dev/null 2>&1 && continue
 1126       am__tar='tar chf - "$$tardir"'
 1127       am__tar_='tar chf - "$tardir"'
 1128       am__untar='tar xf -'
 1129       ;;
 1130     pax)
 1131       am__tar='pax -L -x $1 -w "$$tardir"'
 1132       am__tar_='pax -L -x $1 -w "$tardir"'
 1133       am__untar='pax -r'
 1134       ;;
 1135     cpio)
 1136       am__tar='find "$$tardir" -print | cpio -o -H $1 -L'
 1137       am__tar_='find "$tardir" -print | cpio -o -H $1 -L'
 1138       am__untar='cpio -i -H $1 -d'
 1139       ;;
 1140     none)
 1141       am__tar=false
 1142       am__tar_=false
 1143       am__untar=false
 1144       ;;
 1145     esac
 1146 
 1147     # If the value was cached, stop now.  We just wanted to have am__tar
 1148     # and am__untar set.
 1149     test -n "${am_cv_prog_tar_$1}" && break
 1150 
 1151     # tar/untar a dummy directory, and stop if the command works.
 1152     rm -rf conftest.dir
 1153     mkdir conftest.dir
 1154     echo GrepMe > conftest.dir/file
 1155     AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar])
 1156     rm -rf conftest.dir
 1157     if test -s conftest.tar; then
 1158       AM_RUN_LOG([$am__untar <conftest.tar])
 1159       AM_RUN_LOG([cat conftest.dir/file])
 1160       grep GrepMe conftest.dir/file >/dev/null 2>&1 && break
 1161     fi
 1162   done
 1163   rm -rf conftest.dir
 1164 
 1165   AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])
 1166   AC_MSG_RESULT([$am_cv_prog_tar_$1])])
 1167 
 1168 AC_SUBST([am__tar])
 1169 AC_SUBST([am__untar])
 1170 ]) # _AM_PROG_TAR
 1171 
 1172 m4_include([gl/m4/alloca.m4])
 1173 m4_include([gl/m4/gnulib.m4])
 1174 m4_include([gl/m4/valgrind-tests.m4])
 1175 m4_include([m4/autobuild.m4])
 1176 m4_include([m4/ax_prog_bison.m4])
 1177 m4_include([m4/gcov.m4])
 1178 m4_include([m4/gpg-error.m4])
 1179 m4_include([m4/libtool.m4])
 1180 m4_include([m4/ltoptions.m4])
 1181 m4_include([m4/ltsugar.m4])
 1182 m4_include([m4/ltversion.m4])
 1183 m4_include([m4/lt~obsolete.m4])