parser3/aclocal.m4 - diff

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Diff for /parser3/aclocal.m4 between versions 1.112 and 1.144

-version 1.112, 2015/10/29 15:26:28
+version 1.144, 2024/11/04 18:20:07
  Line 1
- # generated automatically by aclocal 1.11.1 -*- Autoconf -*-
+ # generated automatically by aclocal 1.16.3 -*- Autoconf -*-
+ # Copyright (C) 1996-2020 Free Software Foundation, Inc.
- # Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
- # 2005, 2006, 2007, 2008, 2009  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.
  Line 11
  # even the implied warranty of MERCHANTABILITY or FITNESS FOR A
  # PARTICULAR PURPOSE.
+ m4_ifndef([AC_CONFIG_MACRO_DIRS], [m4_defun([_AM_CONFIG_MACRO_DIRS], [])m4_defun([AC_CONFIG_MACRO_DIRS], [_AM_CONFIG_MACRO_DIRS($@)])])
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  If you have problems, you may need to regenerate the build system entirely.
- To do so, use the procedure documented by the package, typically `autoreconf'.])])
+ To do so, use the procedure documented by the package, typically 'autoreconf'.])])
- # Copyright (C) 2002, 2003, 2005, 2006, 2007, 2008  Free Software Foundation, Inc.
+ # Copyright (C) 2002-2020 Free Software Foundation, Inc.
  #
  # This file is free software; the Free Software Foundation
  # gives unlimited permission to copy and/or distribute it,
- Line 31  To do so, use the procedure documented b
+ Line 32  To do so, use the procedure documented b
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- # Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2009
+ # Copyright (C) 1999-2020 Free Software Foundation, Inc.
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- # serial 10
- # There are a few dirty hacks below to avoid letting `AC_PROG_CC' be
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- Line 176  AC_REQUIRE([AM_OUTPUT_DEPENDENCY_COMMAND
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-                    [depcc="$$1"   am_compiler_list=])
+       [$1], [GCJ],  [depcc="$GCJ"  am_compiler_list='gcc3 gcc'],
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- Line 189  AC_CACHE_CHECK([dependency style of $dep
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    # instance it was reported that on HP-UX the gcc test will end up
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+   # making a dummy file named 'D' -- because '-MD' means "put the output
-   # in D'.
+   # in D".
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- Line 229  AC_CACHE_CHECK([dependency style of $dep
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-       # Solaris 8's {/usr,}/bin/sh.
+       # Solaris 10 /bin/sh.
-       touch sub/conftst$i.h
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      echo "${am__include} ${am__quote}sub/conftest.Po${am__quote}" > confmf
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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.  Also, some Intel
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-     # versions had trouble with output in subdirs
+     # versions had trouble with output in subdirs.
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      am__minus_obj="-o $am__obj"
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- Line 247  AC_CACHE_CHECK([dependency style of $dep
+ Line 244  AC_CACHE_CHECK([dependency style of $dep
        test "$am__universal" = false || continue
        ;;
      nosideeffect)
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+       # only be used when explicitly requested.
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          continue
        else
          break
        fi
        ;;
-     msvisualcpp | msvcmsys)
+     msvc7 | msvc7msys | msvisualcpp | msvcmsys)
-       # This compiler won't grok `-c -o', but also, the minuso test has
+       # This compiler won't grok '-c -o', but also, the minuso test has
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        # so weak that their functioning should not be impacted.
        am__obj=conftest.${OBJEXT-o}
- Line 304  AM_CONDITIONAL([am__fastdep$1], [
+ Line 301  AM_CONDITIONAL([am__fastdep$1], [
  # AM_SET_DEPDIR
  # -------------
  # Choose a directory name for dependency files.
- # This macro is AC_REQUIREd in _AM_DEPENDENCIES
+ # This macro is AC_REQUIREd in _AM_DEPENDENCIES.
  AC_DEFUN([AM_SET_DEPDIR],
  [AC_REQUIRE([AM_SET_LEADING_DOT])dnl
  AC_SUBST([DEPDIR], ["${am__leading_dot}deps"])dnl
- Line 314  AC_SUBST([DEPDIR], ["${am__leading_dot}d
+ Line 311  AC_SUBST([DEPDIR], ["${am__leading_dot}d
  # AM_DEP_TRACK
  # ------------
  AC_DEFUN([AM_DEP_TRACK],
- [AC_ARG_ENABLE(dependency-tracking,
+ [AC_ARG_ENABLE([dependency-tracking], [dnl
- [  --disable-dependency-tracking  speeds up one-time build
+ AS_HELP_STRING(
-   --enable-dependency-tracking   do not reject slow dependency extractors])
+   [--enable-dependency-tracking],
+   [do not reject slow dependency extractors])
+ AS_HELP_STRING(
+   [--disable-dependency-tracking],
+   [speeds up one-time build])])
  if test "x$enable_dependency_tracking" != xno; then
    am_depcomp="$ac_aux_dir/depcomp"
    AMDEPBACKSLASH='\'
+   am__nodep='_no'
  fi
  AM_CONDITIONAL([AMDEP], [test "x$enable_dependency_tracking" != xno])
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  _AM_SUBST_NOTMAKE([AMDEPBACKSLASH])dnl
+ AC_SUBST([am__nodep])dnl
+ _AM_SUBST_NOTMAKE([am__nodep])dnl
  ])
  # Generate code to set up dependency tracking.              -*- Autoconf -*-
- # Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2008
+ # Copyright (C) 1999-2020 Free Software Foundation, Inc.
- # 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.
- #serial 5
  # _AM_OUTPUT_DEPENDENCY_COMMANDS
  # ------------------------------
  AC_DEFUN([_AM_OUTPUT_DEPENDENCY_COMMANDS],
  [{
-   # Autoconf 2.62 quotes --file arguments for eval, but not when files
+   # Older Autoconf quotes --file arguments for eval, but not when files
    # are listed without --file.  Let's play safe and only enable the eval
    # if we detect the quoting.
-   case $CONFIG_FILES in
+   # TODO: see whether this extra hack can be removed once we start
-   *\'*) eval set x "$CONFIG_FILES" ;;
+   # requiring Autoconf 2.70 or later.
-   *)   set x $CONFIG_FILES ;;
+   AS_CASE([$CONFIG_FILES],
-   esac
+           [*\'*], [eval set x "$CONFIG_FILES"],
+           [*], [set x $CONFIG_FILES])
    shift
-   for mf
+   # Used to flag and report bootstrapping failures.
+   am_rc=0
+   for am_mf
    do
      # Strip MF so we end up with the name of the file.
-     mf=`echo "$mf" | sed -e 's/:.*$//'`
+     am_mf=`AS_ECHO(["$am_mf"]) | sed -e 's/:.*$//'`
-     # Check whether this is an Automake generated Makefile or not.
+     # Check whether this is an Automake generated Makefile which includes
-     # We used to match only the files named `Makefile.in', but
+     # dependency-tracking related rules and includes.
-     # some people rename them; so instead we look at the file content.
+     # Grep'ing the whole file directly is not great: AIX grep has a line
-     # Grep'ing the first line is not enough: some people post-process
-     # each Makefile.in and add a new line on top of each file to say so.
-     # Grep'ing the whole file is not good either: AIX grep has a line
      # limit of 2048, but all sed's we know have understand at least 4000.
-     if sed -n 's,^#.*generated by automake.*,X,p' "$mf" | grep X >/dev/null 2>&1; then
+     sed -n 's,^am--depfiles:.*,X,p' "$am_mf" | grep X >/dev/null 2>&1 \
-       dirpart=`AS_DIRNAME("$mf")`
+       || continue
-     else
+     am_dirpart=`AS_DIRNAME(["$am_mf"])`
-       continue
+     am_filepart=`AS_BASENAME(["$am_mf"])`
-     fi
+     AM_RUN_LOG([cd "$am_dirpart" \
-     # Extract the definition of DEPDIR, am__include, and am__quote
+       && sed -e '/# am--include-marker/d' "$am_filepart" \
-     # from the Makefile without running `make'.
+         | $MAKE -f - am--depfiles]) || am_rc=$?
-     DEPDIR=`sed -n 's/^DEPDIR = //p' < "$mf"`
-     test -z "$DEPDIR" && continue
-     am__include=`sed -n 's/^am__include = //p' < "$mf"`
-     test -z "am__include" && continue
-     am__quote=`sed -n 's/^am__quote = //p' < "$mf"`
-     # When using ansi2knr, U may be empty or an underscore; expand it
-     U=`sed -n 's/^U = //p' < "$mf"`
-     # Find all dependency output files, they are included files with
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-     # simplest approach to changing $(DEPDIR) to its actual value in the
-     # expansion.
-     for file in `sed -n "
-       s/^$am__include $am__quote\(.*(DEPDIR).*\)$am__quote"'$/\1/p' <"$mf" | \
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-       # Make sure the directory exists.
-       test -f "$dirpart/$file" && continue
-       fdir=`AS_DIRNAME(["$file"])`
-       AS_MKDIR_P([$dirpart/$fdir])
-       # echo "creating $dirpart/$file"
-       echo '# dummy' > "$dirpart/$file"
-     done
    done
+   if test $am_rc -ne 0; then
+     AC_MSG_FAILURE([Something went wrong bootstrapping makefile fragments
+     for automatic dependency tracking.  If GNU make was not used, consider
+     re-running the configure script with MAKE="gmake" (or whatever is
+     necessary).  You can also try re-running configure with the
+     '--disable-dependency-tracking' option to at least be able to build
+     the package (albeit without support for automatic dependency tracking).])
+   fi
+   AS_UNSET([am_dirpart])
+   AS_UNSET([am_filepart])
+   AS_UNSET([am_mf])
+   AS_UNSET([am_rc])
+   rm -f conftest-deps.mk
  }
  ])# _AM_OUTPUT_DEPENDENCY_COMMANDS
- Line 397  AC_DEFUN([_AM_OUTPUT_DEPENDENCY_COMMANDS
+ Line 390  AC_DEFUN([_AM_OUTPUT_DEPENDENCY_COMMANDS
  # -----------------------------
  # This macro should only be invoked once -- use via AC_REQUIRE.
  #
- # This code is only required when automatic dependency tracking
+ # This code is only required when automatic dependency tracking is enabled.
- # is enabled.  FIXME.  This creates each `.P' file that we will
+ # This creates each '.Po' and '.Plo' makefile fragment that we'll need in
- # need in order to bootstrap the dependency handling code.
+ # order to bootstrap the dependency handling code.
  AC_DEFUN([AM_OUTPUT_DEPENDENCY_COMMANDS],
  [AC_CONFIG_COMMANDS([depfiles],
       [test x"$AMDEP_TRUE" != x"" || _AM_OUTPUT_DEPENDENCY_COMMANDS],
-      [AMDEP_TRUE="$AMDEP_TRUE" ac_aux_dir="$ac_aux_dir"])
+      [AMDEP_TRUE="$AMDEP_TRUE" MAKE="${MAKE-make}"])])
- ])
- # Copyright (C) 1996, 1997, 2000, 2001, 2003, 2005
- # Free Software Foundation, Inc.
- #
- # This file is free software; the Free Software Foundation
- # gives unlimited permission to copy and/or distribute it,
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  # Do all the work for Automake.                             -*- Autoconf -*-
- # Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
+ # Copyright (C) 1996-2020 Free Software Foundation, Inc.
- # 2005, 2006, 2008, 2009 Free Software Foundation, Inc.
  #
  # This file is free software; the Free Software Foundation
  # gives unlimited permission to copy and/or distribute it,
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- # serial 16
  # 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.
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+ m4_defn([AC_PROG_CC])
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  # AM_INIT_AUTOMAKE([OPTIONS])
  # -----------------------------------------------
- Line 444  AU_DEFUN([AM_CONFIG_HEADER], [AC_CONFIG_
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  # release and drop the old call support.
  AC_DEFUN([AM_INIT_AUTOMAKE],
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- Line 473  AC_SUBST([CYGPATH_W])
+ Line 456  AC_SUBST([CYGPATH_W])
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+ [AC_DIAGNOSE([obsolete],
+              [$0: two- and three-arguments forms are deprecated.])
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   AC_SUBST([PACKAGE], [$1])dnl
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- m4_if(m4_ifdef([AC_PACKAGE_NAME], 1)m4_ifdef([AC_PACKAGE_VERSION], 1), 11,,
+ m4_if(
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+   [ok:ok],,
    [m4_fatal([AC_INIT should be called with package and version arguments])])dnl
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  AC_REQUIRE([AM_SANITY_CHECK])dnl
  AC_REQUIRE([AC_ARG_PROGRAM])dnl
- AM_MISSING_PROG(ACLOCAL, aclocal-${am__api_version})
+ AM_MISSING_PROG([ACLOCAL], [aclocal-${am__api_version}])
- AM_MISSING_PROG(AUTOCONF, autoconf)
+ AM_MISSING_PROG([AUTOCONF], [autoconf])
- AM_MISSING_PROG(AUTOMAKE, automake-${am__api_version})
+ AM_MISSING_PROG([AUTOMAKE], [automake-${am__api_version}])
- AM_MISSING_PROG(AUTOHEADER, autoheader)
+ AM_MISSING_PROG([AUTOHEADER], [autoheader])
- AM_MISSING_PROG(MAKEINFO, makeinfo)
+ AM_MISSING_PROG([MAKEINFO], [makeinfo])
  AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
  AC_REQUIRE([AM_PROG_INSTALL_STRIP])dnl
- AC_REQUIRE([AM_PROG_MKDIR_P])dnl
+ AC_REQUIRE([AC_PROG_MKDIR_P])dnl
- # We need awk for the "check" target.  The system "awk" is bad on
+ # For better backward compatibility.  To be removed once Automake 1.9.x
- # some platforms.
+ # dies out for good.  For more background, see:
+ # <https://lists.gnu.org/archive/html/automake/2012-07/msg00001.html>
+ # <https://lists.gnu.org/archive/html/automake/2012-07/msg00014.html>
+ AC_SUBST([mkdir_p], ['$(MKDIR_P)'])
+ # We need awk for the "check" target (and possibly the TAP driver).  The
+ # system "awk" is bad on some platforms.
  AC_REQUIRE([AC_PROG_AWK])dnl
  AC_REQUIRE([AC_PROG_MAKE_SET])dnl
  AC_REQUIRE([AM_SET_LEADING_DOT])dnl
- Line 508  _AM_IF_OPTION([tar-ustar], [_AM_PROG_TAR
+ Line 500  _AM_IF_OPTION([tar-ustar], [_AM_PROG_TAR
                               [_AM_PROG_TAR([v7])])])
  _AM_IF_OPTION([no-dependencies],,
  [AC_PROVIDE_IFELSE([AC_PROG_CC],
-                   [_AM_DEPENDENCIES(CC)],
+                   [_AM_DEPENDENCIES([CC])],
-                   [define([AC_PROG_CC],
+                   [m4_define([AC_PROG_CC],
-                           defn([AC_PROG_CC])[_AM_DEPENDENCIES(CC)])])dnl
+                              m4_defn([AC_PROG_CC])[_AM_DEPENDENCIES([CC])])])dnl
  AC_PROVIDE_IFELSE([AC_PROG_CXX],
-                   [_AM_DEPENDENCIES(CXX)],
+                   [_AM_DEPENDENCIES([CXX])],
-                   [define([AC_PROG_CXX],
+                   [m4_define([AC_PROG_CXX],
-                           defn([AC_PROG_CXX])[_AM_DEPENDENCIES(CXX)])])dnl
+                              m4_defn([AC_PROG_CXX])[_AM_DEPENDENCIES([CXX])])])dnl
  AC_PROVIDE_IFELSE([AC_PROG_OBJC],
-                   [_AM_DEPENDENCIES(OBJC)],
+                   [_AM_DEPENDENCIES([OBJC])],
-                   [define([AC_PROG_OBJC],
+                   [m4_define([AC_PROG_OBJC],
-                           defn([AC_PROG_OBJC])[_AM_DEPENDENCIES(OBJC)])])dnl
+                              m4_defn([AC_PROG_OBJC])[_AM_DEPENDENCIES([OBJC])])])dnl
- ])
+ AC_PROVIDE_IFELSE([AC_PROG_OBJCXX],
- _AM_IF_OPTION([silent-rules], [AC_REQUIRE([AM_SILENT_RULES])])dnl
+                   [_AM_DEPENDENCIES([OBJCXX])],
- dnl The `parallel-tests' driver may need to know about EXEEXT, so add the
+                   [m4_define([AC_PROG_OBJCXX],
- dnl `am__EXEEXT' conditional if _AM_COMPILER_EXEEXT was seen.  This macro
+                              m4_defn([AC_PROG_OBJCXX])[_AM_DEPENDENCIES([OBJCXX])])])dnl
- dnl is hooked onto _AC_COMPILER_EXEEXT early, see below.
+ ])
+ AC_REQUIRE([AM_SILENT_RULES])dnl
+ dnl The testsuite driver may need to know about EXEEXT, so add the
+ dnl 'am__EXEEXT' conditional if _AM_COMPILER_EXEEXT was seen.  This
+ dnl macro is hooked onto _AC_COMPILER_EXEEXT early, see below.
  AC_CONFIG_COMMANDS_PRE(dnl
  [m4_provide_if([_AM_COMPILER_EXEEXT],
    [AM_CONDITIONAL([am__EXEEXT], [test -n "$EXEEXT"])])])dnl
+ # POSIX will say in a future version that running "rm -f" with no argument
+ # is OK; and we want to be able to make that assumption in our Makefile
+ # recipes.  So use an aggressive probe to check that the usage we want is
+ # 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
+ of your $PATH and any error possibly output before this message.  This
+ can help us improve future automake versions.
+ END
+   if test x"$ACCEPT_INFERIOR_RM_PROGRAM" = x"yes"; then
+     echo 'Configuration will proceed anyway, since you have set the' >&2
+     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: <https://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
+ to "yes", and re-run configure.
+ END
+     AC_MSG_ERROR([Your 'rm' program is bad, sorry.])
+   fi
+ fi
+ dnl The trailing newline in this macro's definition is deliberate, for
+ dnl backward compatibility and to allow trailing 'dnl'-style comments
+ dnl after the AM_INIT_AUTOMAKE invocation. See automake bug#16841.
  ])
- dnl Hook into `_AC_COMPILER_EXEEXT' early to learn its expansion.  Do not
+ dnl Hook into '_AC_COMPILER_EXEEXT' early to learn its expansion.  Do not
  dnl add the conditional right here, as _AC_COMPILER_EXEEXT may be further
  dnl mangled by Autoconf and run in a shell conditional statement.
  m4_define([_AC_COMPILER_EXEEXT],
  m4_defn([_AC_COMPILER_EXEEXT])[m4_provide([_AM_COMPILER_EXEEXT])])
  # When config.status generates a header, we must update the stamp-h file.
  # This file resides in the same directory as the config header
  # that is generated.  The stamp files are numbered to have different names.
- Line 557  for _am_header in $config_headers :; do
+ Line 597  for _am_header in $config_headers :; do
  done
  echo "timestamp for $_am_arg" >`AS_DIRNAME(["$_am_arg"])`/stamp-h[]$_am_stamp_count])
- # Copyright (C) 2001, 2003, 2005, 2008  Free Software Foundation, Inc.
+ # Copyright (C) 2001-2020 Free Software Foundation, Inc.
  #
  # This file is free software; the Free Software Foundation
  # gives unlimited permission to copy and/or distribute it,
- Line 568  echo "timestamp for $_am_arg" >`AS_DIRNA
+ Line 608  echo "timestamp for $_am_arg" >`AS_DIRNA
  # Define $install_sh.
  AC_DEFUN([AM_PROG_INSTALL_SH],
  [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
- if test x"${install_sh}" != xset; then
+ if test x"${install_sh+set}" != xset; then
    case $am_aux_dir in
    *\ * | *\     *)
      install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
- Line 576  if test x"${install_sh}" != xset; then
+ Line 616  if test x"${install_sh}" != xset; then
      install_sh="\${SHELL} $am_aux_dir/install-sh"
    esac
  fi
- AC_SUBST(install_sh)])
+ AC_SUBST([install_sh])])
- # Copyright (C) 2003, 2005  Free Software Foundation, Inc.
+ # Copyright (C) 2003-2020 Free Software Foundation, Inc.
  #
  # This file is free software; the Free Software Foundation
  # gives unlimited permission to copy and/or distribute it,
  # with or without modifications, as long as this notice is preserved.
- # serial 2
  # Check whether the underlying file-system supports filenames
  # with a leading dot.  For instance MS-DOS doesn't.
  AC_DEFUN([AM_SET_LEADING_DOT],
- Line 601  AC_SUBST([am__leading_dot])])
+ Line 639  AC_SUBST([am__leading_dot])])
  # Check to see how 'make' treats includes.                  -*- Autoconf -*-
- # Copyright (C) 2001, 2002, 2003, 2005, 2009  Free Software Foundation, Inc.
+ # Copyright (C) 2001-2020 Free Software Foundation, Inc.
  #
  # This file is free software; the Free Software Foundation
  # gives unlimited permission to copy and/or distribute it,
  # with or without modifications, as long as this notice is preserved.
- # serial 4
  # AM_MAKE_INCLUDE()
  # -----------------
- # Check to see how make treats includes.
+ # Check whether make has an 'include' directive that can support all
+ # the idioms we need for our automatic dependency tracking code.
  AC_DEFUN([AM_MAKE_INCLUDE],
- [am_make=${MAKE-make}
+ [AC_MSG_CHECKING([whether ${MAKE-make} supports the include directive])
- cat > confinc << 'END'
+ cat > confinc.mk << 'END'
  am__doit:
-         @echo this is the am__doit target
+         @echo this is the am__doit target >confinc.out
  .PHONY: am__doit
  END
- # If we don't find an include directive, just comment out the code.
- AC_MSG_CHECKING([for style of include used by $am_make])
  am__include="#"
  am__quote=
- _am_result=none
+ # BSD make does it like this.
- # First try GNU make style include.
+ echo '.include "confinc.mk" # ignored' > confmf.BSD
- echo "include confinc" > confmf
+ # Other make implementations (GNU, Solaris 10, AIX) do it like this.
- # Ignore all kinds of additional output from `make'.
+ echo 'include confinc.mk # ignored' > confmf.GNU
- case `$am_make -s -f confmf 2> /dev/null` in #(
+ _am_result=no
- *the\ am__doit\ target*)
+ for s in GNU BSD; do
-   am__include=include
+   AM_RUN_LOG([${MAKE-make} -f confmf.$s && cat confinc.out])
-   am__quote=
+   AS_CASE([$?:`cat confinc.out 2>/dev/null`],
-   _am_result=GNU
+       ['0:this is the am__doit target'],
-   ;;
+       [AS_CASE([$s],
- esac
+           [BSD], [am__include='.include' am__quote='"'],
- # Now try BSD make style include.
+           [am__include='include' am__quote=''])])
- if test "$am__include" = "#"; then
+   if test "$am__include" != "#"; then
-    echo '.include "confinc"' > confmf
+     _am_result="yes ($s style)"
-    case `$am_make -s -f confmf 2> /dev/null` in #(
+     break
-    *the\ am__doit\ target*)
+   fi
-      am__include=.include
+ done
-      am__quote="\""
+ rm -f confinc.* confmf.*
-      _am_result=BSD
+ AC_MSG_RESULT([${_am_result}])
-      ;;
+ AC_SUBST([am__include])])
-    esac
+ AC_SUBST([am__quote])])
- fi
- AC_SUBST([am__include])
- AC_SUBST([am__quote])
- AC_MSG_RESULT([$_am_result])
- rm -f confinc confmf
- ])
  # Fake the existence of programs that GNU maintainers use.  -*- Autoconf -*-
- # Copyright (C) 1997, 1999, 2000, 2001, 2003, 2004, 2005, 2008
+ # Copyright (C) 1997-2020 Free Software Foundation, Inc.
- # 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.
- # serial 6
  # AM_MISSING_PROG(NAME, PROGRAM)
  # ------------------------------
  AC_DEFUN([AM_MISSING_PROG],
- Line 669  AC_DEFUN([AM_MISSING_PROG],
+ Line 695  AC_DEFUN([AM_MISSING_PROG],
  $1=${$1-"${am_missing_run}$2"}
  AC_SUBST($1)])
  # AM_MISSING_HAS_RUN
  # ------------------
- # Define MISSING if not defined so far and test if it supports --run.
+ # Define MISSING if not defined so far and test if it is modern enough.
- # If it does, set am_missing_run to use it, otherwise, to nothing.
+ # If it is, set am_missing_run to use it, otherwise, to nothing.
  AC_DEFUN([AM_MISSING_HAS_RUN],
  [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
  AC_REQUIRE_AUX_FILE([missing])dnl
  if test x"${MISSING+set}" != xset; then
-   case $am_aux_dir in
+   MISSING="\${SHELL} '$am_aux_dir/missing'"
-   *\ * | *\     *)
-     MISSING="\${SHELL} \"$am_aux_dir/missing\"" ;;
-   *)
-     MISSING="\${SHELL} $am_aux_dir/missing" ;;
-   esac
  fi
  # Use eval to expand $SHELL
- if eval "$MISSING --run true"; then
+ if eval "$MISSING --is-lightweight"; then
-   am_missing_run="$MISSING --run "
+   am_missing_run="$MISSING "
  else
    am_missing_run=
-   AC_MSG_WARN([`missing' script is too old or missing])
+   AC_MSG_WARN(['missing' script is too old or missing])
  fi
  ])
- # Copyright (C) 2003, 2004, 2005, 2006  Free Software Foundation, Inc.
+ #  -*- Autoconf -*-
+ # Obsolete and "removed" macros, that must however still report explicit
+ # error messages when used, to smooth transition.
+ #
+ # Copyright (C) 1996-2020 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_MKDIR_P
+ AC_DEFUN([AM_CONFIG_HEADER],
- # ---------------
+ [AC_DIAGNOSE([obsolete],
- # Check for `mkdir -p'.
+ ['$0': this macro is obsolete.
- AC_DEFUN([AM_PROG_MKDIR_P],
+ You should use the 'AC][_CONFIG_HEADERS' macro instead.])dnl
- [AC_PREREQ([2.60])dnl
+ AC_CONFIG_HEADERS($@)])
- AC_REQUIRE([AC_PROG_MKDIR_P])dnl
- dnl Automake 1.8 to 1.9.6 used to define mkdir_p.  We now use MKDIR_P,
+ AC_DEFUN([AM_PROG_CC_STDC],
- dnl while keeping a definition of mkdir_p for backward compatibility.
+ [AC_PROG_CC
- dnl @MKDIR_P@ is magic: AC_OUTPUT adjusts its value for each Makefile.
+ am_cv_prog_cc_stdc=$ac_cv_prog_cc_stdc
- dnl However we cannot define mkdir_p as $(MKDIR_P) for the sake of
+ AC_DIAGNOSE([obsolete],
- dnl Makefile.ins that do not define MKDIR_P, so we do our own
+ ['$0': this macro is obsolete.
- dnl adjustment using top_builddir (which is defined more often than
+ You should simply use the 'AC][_PROG_CC' macro instead.
- dnl MKDIR_P).
+ Also, your code should no longer depend upon 'am_cv_prog_cc_stdc',
- AC_SUBST([mkdir_p], ["$MKDIR_P"])dnl
+ but upon 'ac_cv_prog_cc_stdc'.])])
- case $mkdir_p in
-   [[\\/$]]* | ?:[[\\/]]*) ;;
+ AC_DEFUN([AM_C_PROTOTYPES],
-   */*) mkdir_p="\$(top_builddir)/$mkdir_p" ;;
+          [AC_FATAL([automatic de-ANSI-fication support has been removed])])
- esac
+ AU_DEFUN([fp_C_PROTOTYPES], [AM_C_PROTOTYPES])
- ])
  # Helper functions for option handling.                     -*- Autoconf -*-
- # Copyright (C) 2001, 2002, 2003, 2005, 2008  Free Software Foundation, Inc.
+ # Copyright (C) 2001-2020 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.
- # serial 4
  # _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)])
+ [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)])])
- Line 753  AC_DEFUN([_AM_SET_OPTIONS],
+ Line 774  AC_DEFUN([_AM_SET_OPTIONS],
  AC_DEFUN([_AM_IF_OPTION],
  [m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])
- # Check to make sure that the build environment is sane.    -*- Autoconf -*-
+ # Copyright (C) 1999-2020 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.
- # Copyright (C) 1996, 1997, 2000, 2001, 2003, 2005, 2008
+ # _AM_PROG_CC_C_O
- # Free Software Foundation, Inc.
+ # ---------------
+ # 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 $CC"
+ fi
+ AC_LANG_POP([C])])
+ # For backward compatibility.
+ AC_DEFUN_ONCE([AM_PROG_CC_C_O], [AC_REQUIRE([AC_PROG_CC])])
+ # Copyright (C) 2001-2020 Free Software Foundation, Inc.
  #
  # This file is free software; the Free Software Foundation
  # gives unlimited permission to copy and/or distribute it,
  # with or without modifications, as long as this notice is preserved.
- # serial 5
+ # AM_RUN_LOG(COMMAND)
+ # -------------------
+ # Run COMMAND, save the exit status in ac_status, and log it.
+ # (This has been adapted from Autoconf's _AC_RUN_LOG macro.)
+ AC_DEFUN([AM_RUN_LOG],
+ [{ echo "$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) 1996-2020 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])
- # Just in case
- sleep 1
- echo timestamp > conftest.file
  # Reject unsafe characters in $srcdir or the absolute working directory
  # name.  Accept space and tab only in the latter.
  am_lf='
- Line 781  case `pwd` in
+ Line 860  case `pwd` in
  esac
  case $srcdir in
    *[[\\\"\#\$\&\'\`$am_lf\ \    ]]*)
-     AC_MSG_ERROR([unsafe srcdir value: `$srcdir']);;
+     AC_MSG_ERROR([unsafe srcdir value: '$srcdir']);;
  esac
- # Do `set' in a subshell so we don't clobber the current shell's
+ # 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 (
-    set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
+    am_has_slept=no
-    if test "$[*]" = "X"; then
+    for am_try in 1 2; do
-       # -L didn't work.
+      echo "timestamp, slept: $am_has_slept" > conftest.file
-       set X `ls -t "$srcdir/configure" conftest.file`
+      set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
-    fi
+      if test "$[*]" = "X"; then
-    rm -f conftest.file
+         # -L didn't work.
-    if test "$[*]" != "X $srcdir/configure conftest.file" \
+         set X `ls -t "$srcdir/configure" conftest.file`
-       && test "$[*]" != "X conftest.file $srcdir/configure"; then
+      fi
+      if test "$[*]" != "X $srcdir/configure conftest.file" \
-       # If neither matched, then we have a broken ls.  This can happen
+         && test "$[*]" != "X conftest.file $srcdir/configure"; then
-       # if, for instance, CONFIG_SHELL is bash and it inherits a
-       # broken ls alias from the environment.  This has actually
+         # If neither matched, then we have a broken ls.  This can happen
-       # happened.  Such a system could not be considered "sane".
+         # if, for instance, CONFIG_SHELL is bash and it inherits a
-       AC_MSG_ERROR([ls -t appears to fail.  Make sure there is not a broken
+         # broken ls alias from the environment.  This has actually
- alias in your environment])
+         # happened.  Such a system could not be considered "sane".
-    fi
+         AC_MSG_ERROR([ls -t appears to fail.  Make sure there is not a broken
+   alias in your environment])
+      fi
+      if test "$[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
- Line 816  else
+ Line 903  else
     AC_MSG_ERROR([newly created file is older than distributed files!
  Check your system clock])
  fi
- AC_MSG_RESULT(yes)])
+ 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) 2001, 2003, 2005  Free Software Foundation, Inc.
+ # Copyright (C) 2009-2020 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])
+ 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) 2001-2020 Free Software Foundation, Inc.
  #
  # This file is free software; the Free Software Foundation
  # gives unlimited permission to copy and/or distribute it,
- Line 826  AC_MSG_RESULT(yes)])
+ Line 989  AC_MSG_RESULT(yes)])
  # AM_PROG_INSTALL_STRIP
  # ---------------------
- # One issue with vendor `install' (even GNU) is that you can't
+ # 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
+ # 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
+ # Installed binaries are usually stripped using 'strip' when the user
- # run `make install-strip'.  However `strip' might not be the right
+ # 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.
+ # will honor the 'STRIP' environment variable to overrule this program.
- dnl Don't test for $cross_compiling = yes, because it might be `maybe'.
+ 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, 2008  Free Software Foundation, Inc.
+ # Copyright (C) 2006-2020 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.
- # serial 2
  # _AM_SUBST_NOTMAKE(VARIABLE)
  # ---------------------------
  # Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in.
- Line 861  AC_SUBST([INSTALL_STRIP_PROGRAM])])
+ Line 1022  AC_SUBST([INSTALL_STRIP_PROGRAM])])
  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, 2005  Free Software Foundation, Inc.
+ # Copyright (C) 2004-2020 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.
- # serial 2
  # _AM_PROG_TAR(FORMAT)
  # --------------------
  # Check how to create a tarball in format FORMAT.
- # FORMAT should be one of `v7', `ustar', or `pax'.
+ # 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
- Line 888  AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_
+ Line 1047  AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_
  # 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.
+ [# Always define AMTAR for backward compatibility.  Yes, it's still used
- AM_MISSING_PROG([AMTAR], [tar])
+ # in the wild :-(  We should find a proper way to deprecate it ...
- m4_if([$1], [v7],
+ AC_SUBST([AMTAR], ['$${TAR-tar}'])
-      [am__tar='${AMTAR} chof - "$$tardir"'; am__untar='${AMTAR} xf -'],
-      [m4_case([$1], [ustar],, [pax],,
+ # We'll loop over all known methods to create a tar archive until one works.
-               [m4_fatal([Unknown tar format])])
- AC_MSG_CHECKING([how to create a $1 tar archive])
- # Loop over all known methods to create a tar archive until one works.
  _am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
- _am_tools=${am_cv_prog_tar_$1-$_am_tools}
- # Do not fold the above two line into one, because Tru64 sh and
- # Solaris sh will not grok spaces in the rhs of `-'.
- 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
+ m4_if([$1], [v7],
-   # and am__untar set.
+   [am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'],
-   test -n "${am_cv_prog_tar_$1}" && break
-   # tar/untar a dummy directory, and stop if the command works
+   [m4_case([$1],
-   rm -rf conftest.dir
+     [ustar],
-   mkdir conftest.dir
+      [# The POSIX 1988 'ustar' format is defined with fixed-size fields.
-   echo GrepMe > conftest.dir/file
+       # There is notably a 21 bits limit for the UID and the GID.  In fact,
-   AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar])
+       # 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
-   if test -s conftest.tar; then
-     AM_RUN_LOG([$am__untar <conftest.tar])
-     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_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])
- AC_MSG_RESULT([$am_cv_prog_tar_$1])])
+   AC_MSG_RESULT([$am_cv_prog_tar_$1])])
  AC_SUBST([am__tar])
  AC_SUBST([am__untar])
  ]) # _AM_PROG_TAR

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	Added in v.1.144