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version 1.1, 2003/02/23 03:06:41 version 1.10, 2015/08/04 06:46:29
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 # Copyright 1996, 1997, 1998, 1999, 2000, 2001  # Copyright (C) 1996-2014 Free Software Foundation, Inc.
 # Free Software Foundation, Inc.  
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 # gives unlimited permission to copy and/or distribute it,  # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.  # with or without modifications, as long as this notice is preserved.
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         am__minus_obj=
         ;;
     none) break ;;      none) break ;;
     esac      esac
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     # mode.  It turns out that the SunPro C++ compiler does not properly  
     # handle `-M -o', and we need to detect this.  
     if depmode=$depmode \      if depmode=$depmode \
        source=conftest.c object=conftest.o \         source=sub/conftest.c object=$am__obj \
        depfile=conftest.Po tmpdepfile=conftest.TPo \         depfile=sub/conftest.Po tmpdepfile=sub/conftest.TPo \
        $SHELL ./depcomp $depcc -c conftest.c -o conftest.o >/dev/null 2>&1 &&         $SHELL ./depcomp $depcc -c $am__minus_obj sub/conftest.c \
        grep conftest.h conftest.Po > /dev/null 2>&1 &&           >/dev/null 2>conftest.err &&
          grep sub/conftst1.h sub/conftest.Po > /dev/null 2>&1 &&
          grep sub/conftst6.h sub/conftest.Po > /dev/null 2>&1 &&
          grep $am__obj sub/conftest.Po > /dev/null 2>&1 &&
        ${MAKE-make} -s -f confmf > /dev/null 2>&1; then         ${MAKE-make} -s -f confmf > /dev/null 2>&1; then
       am_cv_$1_dependencies_compiler_type=$depmode        # icc doesn't choke on unknown options, it will just issue warnings
       break        # or remarks (even with -Werror).  So we grep stderr for any message
         # that says an option was ignored or not supported.
         # When given -MP, icc 7.0 and 7.1 complain thusly:
         #   icc: Command line warning: ignoring option '-M'; no argument required
         # The diagnosis changed in icc 8.0:
         #   icc: Command line remark: option '-MP' not supported
         if (grep 'ignoring option' conftest.err ||
             grep 'not supported' conftest.err) >/dev/null 2>&1; then :; else
           am_cv_$1_dependencies_compiler_type=$depmode
           break
         fi
     fi      fi
   done    done
   
Line 333  else
Line 291  else
   am_cv_$1_dependencies_compiler_type=none    am_cv_$1_dependencies_compiler_type=none
 fi  fi
 ])  ])
 $1DEPMODE="depmode=$am_cv_$1_dependencies_compiler_type"  AC_SUBST([$1DEPMODE], [depmode=$am_cv_$1_dependencies_compiler_type])
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 # AM_SET_DEPDIR  # AM_SET_DEPDIR
 # -------------  # -------------
 # Choose a directory name for dependency files.  # Choose a directory name for dependency files.
 # This macro is AC_REQUIREd in _AM_DEPENDENCIES  # This macro is AC_REQUIREd in _AM_DEPENDENCIES.
 AC_DEFUN([AM_SET_DEPDIR],  AC_DEFUN([AM_SET_DEPDIR],
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 mkdir .deps 2>/dev/null  AC_SUBST([DEPDIR], ["${am__leading_dot}deps"])dnl
 if test -d .deps; then  
   DEPDIR=.deps  
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   # MS-DOS does not allow filenames that begin with a dot.  
   DEPDIR=_deps  
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 # AM_DEP_TRACK  # AM_DEP_TRACK
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   am_depcomp="$ac_aux_dir/depcomp"    am_depcomp="$ac_aux_dir/depcomp"
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 # Generate code to set up dependency tracking.  # Generate code to set up dependency tracking.              -*- Autoconf -*-
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 # Usage:  
 # AM_OUTPUT_DEPENDENCY_COMMANDS  
   
   # Copyright (C) 1999-2014 Free Software Foundation, Inc.
 #  #
   # This file is free software; the Free Software Foundation
   # gives unlimited permission to copy and/or distribute it,
   # with or without modifications, as long as this notice is preserved.
   
   
   # _AM_OUTPUT_DEPENDENCY_COMMANDS
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       am__include=`sed -n 's/^am__include = //p' < "$mf"`
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       am__quote=`sed -n 's/^am__quote = //p' < "$mf"`
       # Find all dependency output files, they are included files with
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       for file in `sed -n "
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         fdir=`AS_DIRNAME(["$file"])`
         AS_MKDIR_P([$dirpart/$fdir])
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         echo '# dummy' > "$dirpart/$file"
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     done
   }
   ])# _AM_OUTPUT_DEPENDENCY_COMMANDS
   
   
   # AM_OUTPUT_DEPENDENCY_COMMANDS
   # -----------------------------
   # This macro should only be invoked once -- use via AC_REQUIRE.
   #
 # This code is only required when automatic dependency tracking  # This code is only required when automatic dependency tracking
 # is enabled.  FIXME.  This creates each `.P' file that we will  # is enabled.  FIXME.  This creates each '.P' file that we will
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   case "$mf" in  ])
   Makefile) dirpart=.;;  
   */Makefile) dirpart=`echo "$mf" | sed -e 's|/[^/]*$||'`;;  # Do all the work for Automake.                             -*- Autoconf -*-
   *) continue;;  
   # Copyright (C) 1996-2014 Free Software Foundation, Inc.
   #
   # This file is free software; the Free Software Foundation
   # gives unlimited permission to copy and/or distribute it,
   # with or without modifications, as long as this notice is preserved.
   
   # This macro actually does too much.  Some checks are only needed if
   # your package does certain things.  But this isn't really a big deal.
   
   dnl Redefine AC_PROG_CC to automatically invoke _AM_PROG_CC_C_O.
   m4_define([AC_PROG_CC],
   m4_defn([AC_PROG_CC])
   [_AM_PROG_CC_C_O
   ])
   
   # AM_INIT_AUTOMAKE(PACKAGE, VERSION, [NO-DEFINE])
   # AM_INIT_AUTOMAKE([OPTIONS])
   # -----------------------------------------------
   # The call with PACKAGE and VERSION arguments is the old style
   # call (pre autoconf-2.50), which is being phased out.  PACKAGE
   # and VERSION should now be passed to AC_INIT and removed from
   # the call to AM_INIT_AUTOMAKE.
   # We support both call styles for the transition.  After
   # the next Automake release, Autoconf can make the AC_INIT
   # arguments mandatory, and then we can depend on a new Autoconf
   # release and drop the old call support.
   AC_DEFUN([AM_INIT_AUTOMAKE],
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   dnl Autoconf wants to disallow AM_ names.  We explicitly allow
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   AC_REQUIRE([AM_SET_CURRENT_AUTOMAKE_VERSION])dnl
   AC_REQUIRE([AC_PROG_INSTALL])dnl
   if test "`cd $srcdir && pwd`" != "`pwd`"; then
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     # test to see if srcdir already configured
     if test -f $srcdir/config.status; then
       AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
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   fi
   
   # test whether we have cygpath
   if test -z "$CYGPATH_W"; then
     if (cygpath --version) >/dev/null 2>/dev/null; then
       CYGPATH_W='cygpath -w'
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       CYGPATH_W=echo
     fi
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   AC_SUBST([CYGPATH_W])
   
   # Define the identity of the package.
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   m4_ifval([$3], [_AM_SET_OPTION([no-define])])dnl
    AC_SUBST([PACKAGE], [$1])dnl
    AC_SUBST([VERSION], [$2])],
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   dnl Diagnose old-style AC_INIT with new-style AM_AUTOMAKE_INIT.
   m4_if(
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    AC_SUBST([PACKAGE], ['AC_PACKAGE_TARNAME'])dnl
    AC_SUBST([VERSION], ['AC_PACKAGE_VERSION'])])dnl
   
   _AM_IF_OPTION([no-define],,
   [AC_DEFINE_UNQUOTED([PACKAGE], ["$PACKAGE"], [Name of package])
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   # Some tools Automake needs.
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   AC_REQUIRE([AC_ARG_PROGRAM])dnl
   AM_MISSING_PROG([ACLOCAL], [aclocal-${am__api_version}])
   AM_MISSING_PROG([AUTOCONF], [autoconf])
   AM_MISSING_PROG([AUTOMAKE], [automake-${am__api_version}])
   AM_MISSING_PROG([AUTOHEADER], [autoheader])
   AM_MISSING_PROG([MAKEINFO], [makeinfo])
   AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
   AC_REQUIRE([AM_PROG_INSTALL_STRIP])dnl
   AC_REQUIRE([AC_PROG_MKDIR_P])dnl
   # For better backward compatibility.  To be removed once Automake 1.9.x
   # dies out for good.  For more background, see:
   # <http://lists.gnu.org/archive/html/automake/2012-07/msg00001.html>
   # <http://lists.gnu.org/archive/html/automake/2012-07/msg00014.html>
   AC_SUBST([mkdir_p], ['$(MKDIR_P)'])
   # We need awk for the "check" target (and possibly the TAP driver).  The
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   AC_REQUIRE([AC_PROG_MAKE_SET])dnl
   AC_REQUIRE([AM_SET_LEADING_DOT])dnl
   _AM_IF_OPTION([tar-ustar], [_AM_PROG_TAR([ustar])],
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   _AM_IF_OPTION([no-dependencies],,
   [AC_PROVIDE_IFELSE([AC_PROG_CC],
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                     [m4_define([AC_PROG_CC],
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   AC_PROVIDE_IFELSE([AC_PROG_CXX],
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                     [m4_define([AC_PROG_CXX],
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   AC_PROVIDE_IFELSE([AC_PROG_OBJC],
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                     [m4_define([AC_PROG_OBJC],
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   AC_PROVIDE_IFELSE([AC_PROG_OBJCXX],
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   AC_REQUIRE([AM_SILENT_RULES])dnl
   dnl The testsuite driver may need to know about EXEEXT, so add the
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   # actually supported "in the wild" to an acceptable degree.
   # See automake bug#10828.
   # To make any issue more visible, cause the running configure to be aborted
   # by default if the 'rm' program in use doesn't match our expectations; the
   # user can still override this though.
   if rm -f && rm -fr && rm -rf; then : OK; else
     cat >&2 <<'END'
   Oops!
   
   Your 'rm' program seems unable to run without file operands specified
   on the command line, even when the '-f' option is present.  This is contrary
   to the behaviour of most rm programs out there, and not conforming with
   the upcoming POSIX standard: <http://austingroupbugs.net/view.php?id=542>
   
   Please tell bug-automake@gnu.org about your system, including the value
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   can help us improve future automake versions.
   
   END
     if test x"$ACCEPT_INFERIOR_RM_PROGRAM" = x"yes"; then
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       echo 'ACCEPT_INFERIOR_RM_PROGRAM variable to "yes"' >&2
       echo >&2
     else
       cat >&2 <<'END'
   Aborting the configuration process, to ensure you take notice of the issue.
   
   You can download and install GNU coreutils to get an 'rm' implementation
   that behaves properly: <http://www.gnu.org/software/coreutils/>.
   
   If you want to complete the configuration process using your problematic
   'rm' anyway, export the environment variable ACCEPT_INFERIOR_RM_PROGRAM
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   END
       AC_MSG_ERROR([Your 'rm' program is bad, sorry.])
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   dnl Hook into '_AC_COMPILER_EXEEXT' early to learn its expansion.  Do not
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   test -d "$dirpart/$DEPDIR" || mkdir "$dirpart/$DEPDIR"  
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     $ac_aux_dir/mkinstalldirs "$dirpart/$fdir" > /dev/null 2>&1  
     # echo "creating $dirpart/$file"  
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   # Copyright (C) 2001-2014 Free Software Foundation, Inc.
   #
   # This file is free software; the Free Software Foundation
   # gives unlimited permission to copy and/or distribute it,
   # with or without modifications, as long as this notice is preserved.
   
   # AM_PROG_INSTALL_SH
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   if test x"${install_sh+set}" != xset; then
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       install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
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       install_sh="\${SHELL} $am_aux_dir/install-sh"
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   fi
   AC_SUBST([install_sh])])
   
   # Copyright (C) 2003-2014 Free Software Foundation, Inc.
   #
   # This file is free software; the Free Software Foundation
   # gives unlimited permission to copy and/or distribute it,
   # with or without modifications, as long as this notice is preserved.
   
   # Check whether the underlying file-system supports filenames
   # with a leading dot.  For instance MS-DOS doesn't.
   AC_DEFUN([AM_SET_LEADING_DOT],
   [rm -rf .tst 2>/dev/null
   mkdir .tst 2>/dev/null
   if test -d .tst; then
     am__leading_dot=.
   else
     am__leading_dot=_
   fi
   rmdir .tst 2>/dev/null
   AC_SUBST([am__leading_dot])])
   
   # Add --enable-maintainer-mode option to configure.         -*- Autoconf -*-
   # From Jim Meyering
   
   # Copyright (C) 1996-2014 Free Software Foundation, Inc.
   #
   # This file is free software; the Free Software Foundation
   # gives unlimited permission to copy and/or distribute it,
   # with or without modifications, as long as this notice is preserved.
   
   # AM_MAINTAINER_MODE([DEFAULT-MODE])
   # ----------------------------------
   # Control maintainer-specific portions of Makefiles.
   # Default is to disable them, unless 'enable' is passed literally.
   # For symmetry, 'disable' may be passed as well.  Anyway, the user
   # can override the default with the --enable/--disable switch.
   AC_DEFUN([AM_MAINTAINER_MODE],
   [m4_case(m4_default([$1], [disable]),
          [enable], [m4_define([am_maintainer_other], [disable])],
          [disable], [m4_define([am_maintainer_other], [enable])],
          [m4_define([am_maintainer_other], [enable])
           m4_warn([syntax], [unexpected argument to AM@&t@_MAINTAINER_MODE: $1])])
   AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
     dnl maintainer-mode's default is 'disable' unless 'enable' is passed
     AC_ARG_ENABLE([maintainer-mode],
       [AS_HELP_STRING([--]am_maintainer_other[-maintainer-mode],
         am_maintainer_other[ make rules and dependencies not useful
         (and sometimes confusing) to the casual installer])],
       [USE_MAINTAINER_MODE=$enableval],
       [USE_MAINTAINER_MODE=]m4_if(am_maintainer_other, [enable], [no], [yes]))
     AC_MSG_RESULT([$USE_MAINTAINER_MODE])
     AM_CONDITIONAL([MAINTAINER_MODE], [test $USE_MAINTAINER_MODE = yes])
     MAINT=$MAINTAINER_MODE_TRUE
     AC_SUBST([MAINT])dnl
   ]
   )
   
   # Check to see how 'make' treats includes.                  -*- Autoconf -*-
   
   # Copyright (C) 2001-2014 Free Software Foundation, Inc.
   #
   # This file is free software; the Free Software Foundation
   # gives unlimited permission to copy and/or distribute it,
   # with or without modifications, as long as this notice is preserved.
   
 # AM_MAKE_INCLUDE()  # AM_MAKE_INCLUDE()
 # -----------------  # -----------------
 # Check to see how make treats includes.  # Check to see how make treats includes.
 AC_DEFUN([AM_MAKE_INCLUDE],  AC_DEFUN([AM_MAKE_INCLUDE],
 [am_make=${MAKE-make}  [am_make=${MAKE-make}
 cat > confinc << 'END'  cat > confinc << 'END'
 doit:  am__doit:
         @echo done          @echo this is the am__doit target
   .PHONY: am__doit
 END  END
 # If we don't find an include directive, just comment out the code.  # If we don't find an include directive, just comment out the code.
 AC_MSG_CHECKING([for style of include used by $am_make])  AC_MSG_CHECKING([for style of include used by $am_make])
 am__include='#'  am__include="#"
 am__quote=  am__quote=
 _am_result=none  _am_result=none
 # First try GNU make style include.  # First try GNU make style include.
 echo "include confinc" > confmf  echo "include confinc" > confmf
 # We grep out `Entering directory' and `Leaving directory'  # Ignore all kinds of additional output from 'make'.
 # messages which can occur if `w' ends up in MAKEFLAGS.  case `$am_make -s -f confmf 2> /dev/null` in #(
 # In particular we don't look at `^make:' because GNU make might  *the\ am__doit\ target*)
 # be invoked under some other name (usually "gmake"), in which    am__include=include
 # case it prints its new name instead of `make'.    am__quote=
 if test "`$am_make -s -f confmf 2> /dev/null | fgrep -v 'ing directory'`" = "done"; then    _am_result=GNU
    am__include=include    ;;
    am__quote=  esac
    _am_result=GNU  
 fi  
 # Now try BSD make style include.  # Now try BSD make style include.
 if test "$am__include" = "#"; then  if test "$am__include" = "#"; then
    echo '.include "confinc"' > confmf     echo '.include "confinc"' > confmf
    if test "`$am_make -s -f confmf 2> /dev/null`" = "done"; then     case `$am_make -s -f confmf 2> /dev/null` in #(
       am__include=.include     *the\ am__doit\ target*)
       am__quote='"'       am__include=.include
       _am_result=BSD       am__quote="\""
    fi       _am_result=BSD
        ;;
      esac
 fi  fi
 AC_SUBST(am__include)  AC_SUBST([am__include])
 AC_SUBST(am__quote)  AC_SUBST([am__quote])
 AC_MSG_RESULT($_am_result)  AC_MSG_RESULT([$_am_result])
 rm -f confinc confmf  rm -f confinc confmf
 ])  ])
   
 # serial 3  # Fake the existence of programs that GNU maintainers use.  -*- Autoconf -*-
   
 # AM_CONDITIONAL(NAME, SHELL-CONDITION)  # Copyright (C) 1997-2014 Free Software Foundation, Inc.
 # -------------------------------------  
 # Define a conditional.  
 #  #
 # FIXME: Once using 2.50, use this:  # This file is free software; the Free Software Foundation
 # m4_match([$1], [^TRUE\|FALSE$], [AC_FATAL([$0: invalid condition: $1])])dnl  # gives unlimited permission to copy and/or distribute it,
 AC_DEFUN([AM_CONDITIONAL],  # with or without modifications, as long as this notice is preserved.
 [ifelse([$1], [TRUE],  
         [errprint(__file__:__line__: [$0: invalid condition: $1  # AM_MISSING_PROG(NAME, PROGRAM)
 ])dnl  # ------------------------------
 m4exit(1)])dnl  AC_DEFUN([AM_MISSING_PROG],
 ifelse([$1], [FALSE],  [AC_REQUIRE([AM_MISSING_HAS_RUN])
        [errprint(__file__:__line__: [$0: invalid condition: $1  $1=${$1-"${am_missing_run}$2"}
 ])dnl  AC_SUBST($1)])
 m4exit(1)])dnl  
 AC_SUBST([$1_TRUE])  # AM_MISSING_HAS_RUN
 AC_SUBST([$1_FALSE])  # ------------------
 if $2; then  # Define MISSING if not defined so far and test if it is modern enough.
   $1_TRUE=  # If it is, set am_missing_run to use it, otherwise, to nothing.
   $1_FALSE='#'  AC_DEFUN([AM_MISSING_HAS_RUN],
   [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
   AC_REQUIRE_AUX_FILE([missing])dnl
   if test x"${MISSING+set}" != xset; then
     case $am_aux_dir in
     *\ * | *\     *)
       MISSING="\${SHELL} \"$am_aux_dir/missing\"" ;;
     *)
       MISSING="\${SHELL} $am_aux_dir/missing" ;;
     esac
   fi
   # Use eval to expand $SHELL
   if eval "$MISSING --is-lightweight"; then
     am_missing_run="$MISSING "
 else  else
   $1_TRUE='#'    am_missing_run=
   $1_FALSE=    AC_MSG_WARN(['missing' script is too old or missing])
   fi
   ])
   
   # Helper functions for option handling.                     -*- Autoconf -*-
   
   # Copyright (C) 2001-2014 Free Software Foundation, Inc.
   #
   # This file is free software; the Free Software Foundation
   # gives unlimited permission to copy and/or distribute it,
   # with or without modifications, as long as this notice is preserved.
   
   # _AM_MANGLE_OPTION(NAME)
   # -----------------------
   AC_DEFUN([_AM_MANGLE_OPTION],
   [[_AM_OPTION_]m4_bpatsubst($1, [[^a-zA-Z0-9_]], [_])])
   
   # _AM_SET_OPTION(NAME)
   # --------------------
   # Set option NAME.  Presently that only means defining a flag for this option.
   AC_DEFUN([_AM_SET_OPTION],
   [m4_define(_AM_MANGLE_OPTION([$1]), [1])])
   
   # _AM_SET_OPTIONS(OPTIONS)
   # ------------------------
   # OPTIONS is a space-separated list of Automake options.
   AC_DEFUN([_AM_SET_OPTIONS],
   [m4_foreach_w([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])])
   
   # _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET])
   # -------------------------------------------
   # Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
   AC_DEFUN([_AM_IF_OPTION],
   [m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])
   
   # Copyright (C) 1999-2014 Free Software Foundation, Inc.
   #
   # This file is free software; the Free Software Foundation
   # gives unlimited permission to copy and/or distribute it,
   # with or without modifications, as long as this notice is preserved.
   
   # _AM_PROG_CC_C_O
   # ---------------
   # Like AC_PROG_CC_C_O, but changed for automake.  We rewrite AC_PROG_CC
   # to automatically call this.
   AC_DEFUN([_AM_PROG_CC_C_O],
   [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
   AC_REQUIRE_AUX_FILE([compile])dnl
   AC_LANG_PUSH([C])dnl
   AC_CACHE_CHECK(
     [whether $CC understands -c and -o together],
     [am_cv_prog_cc_c_o],
     [AC_LANG_CONFTEST([AC_LANG_PROGRAM([])])
     # Make sure it works both with $CC and with simple cc.
     # Following AC_PROG_CC_C_O, we do the test twice because some
     # compilers refuse to overwrite an existing .o file with -o,
     # though they will create one.
     am_cv_prog_cc_c_o=yes
     for am_i in 1 2; do
       if AM_RUN_LOG([$CC -c conftest.$ac_ext -o conftest2.$ac_objext]) \
            && test -f conftest2.$ac_objext; then
         : OK
       else
         am_cv_prog_cc_c_o=no
         break
       fi
     done
     rm -f core conftest*
     unset am_i])
   if test "$am_cv_prog_cc_c_o" != yes; then
      # Losing compiler, so override with the script.
      # FIXME: It is wrong to rewrite CC.
      # But if we don't then we get into trouble of one sort or another.
      # A longer-term fix would be to have automake use am__CC in this case,
      # and then we could set am__CC="\$(top_srcdir)/compile \$(CC)"
      CC="$am_aux_dir/compile $CC"
   fi
   AC_LANG_POP([C])])
   
   # For backward compatibility.
   AC_DEFUN_ONCE([AM_PROG_CC_C_O], [AC_REQUIRE([AC_PROG_CC])])
   
   # Copyright (C) 2001-2014 Free Software Foundation, Inc.
   #
   # This file is free software; the Free Software Foundation
   # gives unlimited permission to copy and/or distribute it,
   # with or without modifications, as long as this notice is preserved.
   
   # AM_RUN_LOG(COMMAND)
   # -------------------
   # Run COMMAND, save the exit status in ac_status, and log it.
   # (This has been adapted from Autoconf's _AC_RUN_LOG macro.)
   AC_DEFUN([AM_RUN_LOG],
   [{ echo "$as_me:$LINENO: $1" >&AS_MESSAGE_LOG_FD
      ($1) >&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD
      ac_status=$?
      echo "$as_me:$LINENO: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
      (exit $ac_status); }])
   
   # Check to make sure that the build environment is sane.    -*- Autoconf -*-
   
   # Copyright (C) 1996-2014 Free Software Foundation, Inc.
   #
   # This file is free software; the Free Software Foundation
   # gives unlimited permission to copy and/or distribute it,
   # with or without modifications, as long as this notice is preserved.
   
   # AM_SANITY_CHECK
   # ---------------
   AC_DEFUN([AM_SANITY_CHECK],
   [AC_MSG_CHECKING([whether build environment is sane])
   # Reject unsafe characters in $srcdir or the absolute working directory
   # name.  Accept space and tab only in the latter.
   am_lf='
   '
   case `pwd` in
     *[[\\\"\#\$\&\'\`$am_lf]]*)
       AC_MSG_ERROR([unsafe absolute working directory name]);;
   esac
   case $srcdir in
     *[[\\\"\#\$\&\'\`$am_lf\ \    ]]*)
       AC_MSG_ERROR([unsafe srcdir value: '$srcdir']);;
   esac
   
   # Do 'set' in a subshell so we don't clobber the current shell's
   # arguments.  Must try -L first in case configure is actually a
   # symlink; some systems play weird games with the mod time of symlinks
   # (eg FreeBSD returns the mod time of the symlink's containing
   # directory).
   if (
      am_has_slept=no
      for am_try in 1 2; do
        echo "timestamp, slept: $am_has_slept" > conftest.file
        set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
        if test "$[*]" = "X"; then
           # -L didn't work.
           set X `ls -t "$srcdir/configure" conftest.file`
        fi
        if test "$[*]" != "X $srcdir/configure conftest.file" \
           && test "$[*]" != "X conftest.file $srcdir/configure"; then
   
           # If neither matched, then we have a broken ls.  This can happen
           # if, for instance, CONFIG_SHELL is bash and it inherits a
           # broken ls alias from the environment.  This has actually
           # happened.  Such a system could not be considered "sane".
           AC_MSG_ERROR([ls -t appears to fail.  Make sure there is not a broken
     alias in your environment])
        fi
        if test "$[2]" = conftest.file || test $am_try -eq 2; then
          break
        fi
        # Just in case.
        sleep 1
        am_has_slept=yes
      done
      test "$[2]" = conftest.file
      )
   then
      # Ok.
      :
   else
      AC_MSG_ERROR([newly created file is older than distributed files!
   Check your system clock])
   fi
   AC_MSG_RESULT([yes])
   # If we didn't sleep, we still need to ensure time stamps of config.status and
   # generated files are strictly newer.
   am_sleep_pid=
   if grep 'slept: no' conftest.file >/dev/null 2>&1; then
     ( sleep 1 ) &
     am_sleep_pid=$!
   fi
   AC_CONFIG_COMMANDS_PRE(
     [AC_MSG_CHECKING([that generated files are newer than configure])
      if test -n "$am_sleep_pid"; then
        # Hide warnings about reused PIDs.
        wait $am_sleep_pid 2>/dev/null
      fi
      AC_MSG_RESULT([done])])
   rm -f conftest.file
   ])
   
   # Copyright (C) 2009-2014 Free Software Foundation, Inc.
   #
   # This file is free software; the Free Software Foundation
   # gives unlimited permission to copy and/or distribute it,
   # with or without modifications, as long as this notice is preserved.
   
   # AM_SILENT_RULES([DEFAULT])
   # --------------------------
   # Enable less verbose build rules; with the default set to DEFAULT
   # ("yes" being less verbose, "no" or empty being verbose).
   AC_DEFUN([AM_SILENT_RULES],
   [AC_ARG_ENABLE([silent-rules], [dnl
   AS_HELP_STRING(
     [--enable-silent-rules],
     [less verbose build output (undo: "make V=1")])
   AS_HELP_STRING(
     [--disable-silent-rules],
     [verbose build output (undo: "make V=0")])dnl
   ])
   case $enable_silent_rules in @%:@ (((
     yes) AM_DEFAULT_VERBOSITY=0;;
      no) AM_DEFAULT_VERBOSITY=1;;
       *) AM_DEFAULT_VERBOSITY=m4_if([$1], [yes], [0], [1]);;
   esac
   dnl
   dnl A few 'make' implementations (e.g., NonStop OS and NextStep)
   dnl do not support nested variable expansions.
   dnl See automake bug#9928 and bug#10237.
   am_make=${MAKE-make}
   AC_CACHE_CHECK([whether $am_make supports nested variables],
      [am_cv_make_support_nested_variables],
      [if AS_ECHO([['TRUE=$(BAR$(V))
   BAR0=false
   BAR1=true
   V=1
   am__doit:
           @$(TRUE)
   .PHONY: am__doit']]) | $am_make -f - >/dev/null 2>&1; then
     am_cv_make_support_nested_variables=yes
   else
     am_cv_make_support_nested_variables=no
 fi])  fi])
   if test $am_cv_make_support_nested_variables = yes; then
     dnl Using '$V' instead of '$(V)' breaks IRIX make.
     AM_V='$(V)'
     AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
   else
     AM_V=$AM_DEFAULT_VERBOSITY
     AM_DEFAULT_V=$AM_DEFAULT_VERBOSITY
   fi
   AC_SUBST([AM_V])dnl
   AM_SUBST_NOTMAKE([AM_V])dnl
   AC_SUBST([AM_DEFAULT_V])dnl
   AM_SUBST_NOTMAKE([AM_DEFAULT_V])dnl
   AC_SUBST([AM_DEFAULT_VERBOSITY])dnl
   AM_BACKSLASH='\'
   AC_SUBST([AM_BACKSLASH])dnl
   _AM_SUBST_NOTMAKE([AM_BACKSLASH])dnl
   ])
   
   # Copyright (C) 2001-2014 Free Software Foundation, Inc.
   #
   # This file is free software; the Free Software Foundation
   # gives unlimited permission to copy and/or distribute it,
   # with or without modifications, as long as this notice is preserved.
   
   # AM_PROG_INSTALL_STRIP
   # ---------------------
   # One issue with vendor 'install' (even GNU) is that you can't
   # specify the program used to strip binaries.  This is especially
   # annoying in cross-compiling environments, where the build's strip
   # is unlikely to handle the host's binaries.
   # Fortunately install-sh will honor a STRIPPROG variable, so we
   # always use install-sh in "make install-strip", and initialize
   # STRIPPROG with the value of the STRIP variable (set by the user).
   AC_DEFUN([AM_PROG_INSTALL_STRIP],
   [AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
   # Installed binaries are usually stripped using 'strip' when the user
   # run "make install-strip".  However 'strip' might not be the right
   # tool to use in cross-compilation environments, therefore Automake
   # will honor the 'STRIP' environment variable to overrule this program.
   dnl Don't test for $cross_compiling = yes, because it might be 'maybe'.
   if test "$cross_compiling" != no; then
     AC_CHECK_TOOL([STRIP], [strip], :)
   fi
   INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
   AC_SUBST([INSTALL_STRIP_PROGRAM])])
   
   # Copyright (C) 2006-2014 Free Software Foundation, Inc.
   #
   # This file is free software; the Free Software Foundation
   # gives unlimited permission to copy and/or distribute it,
   # with or without modifications, as long as this notice is preserved.
   
   # _AM_SUBST_NOTMAKE(VARIABLE)
   # ---------------------------
   # Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in.
   # This macro is traced by Automake.
   AC_DEFUN([_AM_SUBST_NOTMAKE])
   
   # AM_SUBST_NOTMAKE(VARIABLE)
   # --------------------------
   # Public sister of _AM_SUBST_NOTMAKE.
   AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
   
   # Check how to create a tarball.                            -*- Autoconf -*-
   
   # Copyright (C) 2004-2014 Free Software Foundation, Inc.
   #
   # This file is free software; the Free Software Foundation
   # gives unlimited permission to copy and/or distribute it,
   # with or without modifications, as long as this notice is preserved.
   
   # _AM_PROG_TAR(FORMAT)
   # --------------------
   # Check how to create a tarball in format FORMAT.
   # FORMAT should be one of 'v7', 'ustar', or 'pax'.
   #
   # Substitute a variable $(am__tar) that is a command
   # writing to stdout a FORMAT-tarball containing the directory
   # $tardir.
   #     tardir=directory && $(am__tar) > result.tar
   #
   # Substitute a variable $(am__untar) that extract such
   # a tarball read from stdin.
   #     $(am__untar) < result.tar
   #
   AC_DEFUN([_AM_PROG_TAR],
   [# Always define AMTAR for backward compatibility.  Yes, it's still used
   # in the wild :-(  We should find a proper way to deprecate it ...
   AC_SUBST([AMTAR], ['$${TAR-tar}'])
   
   # We'll loop over all known methods to create a tar archive until one works.
   _am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
   
   m4_if([$1], [v7],
     [am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'],
   
     [m4_case([$1],
       [ustar],
        [# The POSIX 1988 'ustar' format is defined with fixed-size fields.
         # There is notably a 21 bits limit for the UID and the GID.  In fact,
         # the 'pax' utility can hang on bigger UID/GID (see automake bug#8343
         # and bug#13588).
         am_max_uid=2097151 # 2^21 - 1
         am_max_gid=$am_max_uid
         # The $UID and $GID variables are not portable, so we need to resort
         # to the POSIX-mandated id(1) utility.  Errors in the 'id' calls
         # below are definitely unexpected, so allow the users to see them
         # (that is, avoid stderr redirection).
         am_uid=`id -u || echo unknown`
         am_gid=`id -g || echo unknown`
         AC_MSG_CHECKING([whether UID '$am_uid' is supported by ustar format])
         if test $am_uid -le $am_max_uid; then
            AC_MSG_RESULT([yes])
         else
            AC_MSG_RESULT([no])
            _am_tools=none
         fi
         AC_MSG_CHECKING([whether GID '$am_gid' is supported by ustar format])
         if test $am_gid -le $am_max_gid; then
            AC_MSG_RESULT([yes])
         else
           AC_MSG_RESULT([no])
           _am_tools=none
         fi],
   
     [pax],
       [],
   
     [m4_fatal([Unknown tar format])])
   
     AC_MSG_CHECKING([how to create a $1 tar archive])
   
     # Go ahead even if we have the value already cached.  We do so because we
     # need to set the values for the 'am__tar' and 'am__untar' variables.
     _am_tools=${am_cv_prog_tar_$1-$_am_tools}
   
     for _am_tool in $_am_tools; do
       case $_am_tool in
       gnutar)
         for _am_tar in tar gnutar gtar; do
           AM_RUN_LOG([$_am_tar --version]) && break
         done
         am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"'
         am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"'
         am__untar="$_am_tar -xf -"
         ;;
       plaintar)
         # Must skip GNU tar: if it does not support --format= it doesn't create
         # ustar tarball either.
         (tar --version) >/dev/null 2>&1 && continue
         am__tar='tar chf - "$$tardir"'
         am__tar_='tar chf - "$tardir"'
         am__untar='tar xf -'
         ;;
       pax)
         am__tar='pax -L -x $1 -w "$$tardir"'
         am__tar_='pax -L -x $1 -w "$tardir"'
         am__untar='pax -r'
         ;;
       cpio)
         am__tar='find "$$tardir" -print | cpio -o -H $1 -L'
         am__tar_='find "$tardir" -print | cpio -o -H $1 -L'
         am__untar='cpio -i -H $1 -d'
         ;;
       none)
         am__tar=false
         am__tar_=false
         am__untar=false
         ;;
       esac
   
       # If the value was cached, stop now.  We just wanted to have am__tar
       # and am__untar set.
       test -n "${am_cv_prog_tar_$1}" && break
   
       # tar/untar a dummy directory, and stop if the command works.
       rm -rf conftest.dir
       mkdir conftest.dir
       echo GrepMe > conftest.dir/file
       AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar])
       rm -rf conftest.dir
       if test -s conftest.tar; then
         AM_RUN_LOG([$am__untar <conftest.tar])
         AM_RUN_LOG([cat conftest.dir/file])
         grep GrepMe conftest.dir/file >/dev/null 2>&1 && break
       fi
     done
     rm -rf conftest.dir
   
     AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])
     AC_MSG_RESULT([$am_cv_prog_tar_$1])])
   
   AC_SUBST([am__tar])
   AC_SUBST([am__untar])
   ]) # _AM_PROG_TAR
   
Legend:
Removed from v.1.1  
changed lines
  Added in v.1.10
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