1# generated automatically by aclocal 1.16.3 -*- Autoconf -*-
2
3# Copyright (C) 1996-2020 Free Software Foundation, Inc.
4
5# This file is free software; the Free Software Foundation
6# gives unlimited permission to copy and/or distribute it,
7# with or without modifications, as long as this notice is preserved.
8
9# This program is distributed in the hope that it will be useful,
10# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
11# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
12# PARTICULAR PURPOSE.
13
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23# Copyright (C) 2002-2020 Free Software Foundation, Inc.
24#
25# This file is free software; the Free Software Foundation
26# gives unlimited permission to copy and/or distribute it,
27# with or without modifications, as long as this notice is preserved.
28
29# AM_AUTOMAKE_VERSION(VERSION)
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59# AM_AUX_DIR_EXPAND                                         -*- Autoconf -*-
60
61# Copyright (C) 2001-2020 Free Software Foundation, Inc.
62#
63# This file is free software; the Free Software Foundation
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65# with or without modifications, as long as this notice is preserved.
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111# AM_CONDITIONAL                                            -*- Autoconf -*-
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113# Copyright (C) 1997-2020 Free Software Foundation, Inc.
114#
115# This file is free software; the Free Software Foundation
116# gives unlimited permission to copy and/or distribute it,
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144# Copyright (C) 1999-2020 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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158# _AM_DEPENDENCIES(NAME)
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300
301# AM_SET_DEPDIR
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332
333# Generate code to set up dependency tracking.              -*- Autoconf -*-
334
335# Copyright (C) 1999-2020 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
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343AC_DEFUN([_AM_OUTPUT_DEPENDENCY_COMMANDS],
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345  # Older Autoconf quotes --file arguments for eval, but not when files
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388
389# AM_OUTPUT_DEPENDENCY_COMMANDS
390# -----------------------------
391# This macro should only be invoked once -- use via AC_REQUIRE.
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400
401# Do all the work for Automake.                             -*- Autoconf -*-
402
403# Copyright (C) 1996-2020 Free Software Foundation, Inc.
404#
405# This file is free software; the Free Software Foundation
406# gives unlimited permission to copy and/or distribute it,
407# with or without modifications, as long as this notice is preserved.
408
409# This macro actually does too much.  Some checks are only needed if
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518])
519AC_REQUIRE([AM_SILENT_RULES])dnl
520dnl The testsuite driver may need to know about EXEEXT, so add the
521dnl 'am__EXEEXT' conditional if _AM_COMPILER_EXEEXT was seen.  This
522dnl macro is hooked onto _AC_COMPILER_EXEEXT early, see below.
523AC_CONFIG_COMMANDS_PRE(dnl
524[m4_provide_if([_AM_COMPILER_EXEEXT],
525  [AM_CONDITIONAL([am__EXEEXT], [test -n "$EXEEXT"])])])dnl
526
527# POSIX will say in a future version that running "rm -f" with no argument
528# is OK; and we want to be able to make that assumption in our Makefile
529# recipes.  So use an aggressive probe to check that the usage we want is
530# actually supported "in the wild" to an acceptable degree.
531# See automake bug#10828.
532# To make any issue more visible, cause the running configure to be aborted
533# by default if the 'rm' program in use doesn't match our expectations; the
534# user can still override this though.
535if rm -f && rm -fr && rm -rf; then : OK; else
536  cat >&2 <<'END'
537Oops!
538
539Your 'rm' program seems unable to run without file operands specified
540on the command line, even when the '-f' option is present.  This is contrary
541to the behaviour of most rm programs out there, and not conforming with
542the upcoming POSIX standard: <http://austingroupbugs.net/view.php?id=542>
543
544Please tell bug-automake@gnu.org about your system, including the value
545of your $PATH and any error possibly output before this message.  This
546can help us improve future automake versions.
547
548END
549  if test x"$ACCEPT_INFERIOR_RM_PROGRAM" = x"yes"; then
550    echo 'Configuration will proceed anyway, since you have set the' >&2
551    echo 'ACCEPT_INFERIOR_RM_PROGRAM variable to "yes"' >&2
552    echo >&2
553  else
554    cat >&2 <<'END'
555Aborting the configuration process, to ensure you take notice of the issue.
556
557You can download and install GNU coreutils to get an 'rm' implementation
558that behaves properly: <https://www.gnu.org/software/coreutils/>.
559
560If you want to complete the configuration process using your problematic
561'rm' anyway, export the environment variable ACCEPT_INFERIOR_RM_PROGRAM
562to "yes", and re-run configure.
563
564END
565    AC_MSG_ERROR([Your 'rm' program is bad, sorry.])
566  fi
567fi
568dnl The trailing newline in this macro's definition is deliberate, for
569dnl backward compatibility and to allow trailing 'dnl'-style comments
570dnl after the AM_INIT_AUTOMAKE invocation. See automake bug#16841.
571])
572
573dnl Hook into '_AC_COMPILER_EXEEXT' early to learn its expansion.  Do not
574dnl add the conditional right here, as _AC_COMPILER_EXEEXT may be further
575dnl mangled by Autoconf and run in a shell conditional statement.
576m4_define([_AC_COMPILER_EXEEXT],
577m4_defn([_AC_COMPILER_EXEEXT])[m4_provide([_AM_COMPILER_EXEEXT])])
578
579# When config.status generates a header, we must update the stamp-h file.
580# This file resides in the same directory as the config header
581# that is generated.  The stamp files are numbered to have different names.
582
583# Autoconf calls _AC_AM_CONFIG_HEADER_HOOK (when defined) in the
584# loop where config.status creates the headers, so we can generate
585# our stamp files there.
586AC_DEFUN([_AC_AM_CONFIG_HEADER_HOOK],
587[# Compute $1's index in $config_headers.
588_am_arg=$1
589_am_stamp_count=1
590for _am_header in $config_headers :; do
591  case $_am_header in
592    $_am_arg | $_am_arg:* )
593      break ;;
594    * )
595      _am_stamp_count=`expr $_am_stamp_count + 1` ;;
596  esac
597done
598echo "timestamp for $_am_arg" >`AS_DIRNAME(["$_am_arg"])`/stamp-h[]$_am_stamp_count])
599
600# Copyright (C) 2001-2020 Free Software Foundation, Inc.
601#
602# This file is free software; the Free Software Foundation
603# gives unlimited permission to copy and/or distribute it,
604# with or without modifications, as long as this notice is preserved.
605
606# AM_PROG_INSTALL_SH
607# ------------------
608# Define $install_sh.
609AC_DEFUN([AM_PROG_INSTALL_SH],
610[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
611if test x"${install_sh+set}" != xset; then
612  case $am_aux_dir in
613  *\ * | *\	*)
614    install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
615  *)
616    install_sh="\${SHELL} $am_aux_dir/install-sh"
617  esac
618fi
619AC_SUBST([install_sh])])
620
621# Copyright (C) 2003-2020 Free Software Foundation, Inc.
622#
623# This file is free software; the Free Software Foundation
624# gives unlimited permission to copy and/or distribute it,
625# with or without modifications, as long as this notice is preserved.
626
627# Check whether the underlying file-system supports filenames
628# with a leading dot.  For instance MS-DOS doesn't.
629AC_DEFUN([AM_SET_LEADING_DOT],
630[rm -rf .tst 2>/dev/null
631mkdir .tst 2>/dev/null
632if test -d .tst; then
633  am__leading_dot=.
634else
635  am__leading_dot=_
636fi
637rmdir .tst 2>/dev/null
638AC_SUBST([am__leading_dot])])
639
640# Check to see how 'make' treats includes.	            -*- Autoconf -*-
641
642# Copyright (C) 2001-2020 Free Software Foundation, Inc.
643#
644# This file is free software; the Free Software Foundation
645# gives unlimited permission to copy and/or distribute it,
646# with or without modifications, as long as this notice is preserved.
647
648# AM_MAKE_INCLUDE()
649# -----------------
650# Check whether make has an 'include' directive that can support all
651# the idioms we need for our automatic dependency tracking code.
652AC_DEFUN([AM_MAKE_INCLUDE],
653[AC_MSG_CHECKING([whether ${MAKE-make} supports the include directive])
654cat > confinc.mk << 'END'
655am__doit:
656	@echo this is the am__doit target >confinc.out
657.PHONY: am__doit
658END
659am__include="#"
660am__quote=
661# BSD make does it like this.
662echo '.include "confinc.mk" # ignored' > confmf.BSD
663# Other make implementations (GNU, Solaris 10, AIX) do it like this.
664echo 'include confinc.mk # ignored' > confmf.GNU
665_am_result=no
666for s in GNU BSD; do
667  AM_RUN_LOG([${MAKE-make} -f confmf.$s && cat confinc.out])
668  AS_CASE([$?:`cat confinc.out 2>/dev/null`],
669      ['0:this is the am__doit target'],
670      [AS_CASE([$s],
671          [BSD], [am__include='.include' am__quote='"'],
672          [am__include='include' am__quote=''])])
673  if test "$am__include" != "#"; then
674    _am_result="yes ($s style)"
675    break
676  fi
677done
678rm -f confinc.* confmf.*
679AC_MSG_RESULT([${_am_result}])
680AC_SUBST([am__include])])
681AC_SUBST([am__quote])])
682
683# Fake the existence of programs that GNU maintainers use.  -*- Autoconf -*-
684
685# Copyright (C) 1997-2020 Free Software Foundation, Inc.
686#
687# This file is free software; the Free Software Foundation
688# gives unlimited permission to copy and/or distribute it,
689# with or without modifications, as long as this notice is preserved.
690
691# AM_MISSING_PROG(NAME, PROGRAM)
692# ------------------------------
693AC_DEFUN([AM_MISSING_PROG],
694[AC_REQUIRE([AM_MISSING_HAS_RUN])
695$1=${$1-"${am_missing_run}$2"}
696AC_SUBST($1)])
697
698# AM_MISSING_HAS_RUN
699# ------------------
700# Define MISSING if not defined so far and test if it is modern enough.
701# If it is, set am_missing_run to use it, otherwise, to nothing.
702AC_DEFUN([AM_MISSING_HAS_RUN],
703[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
704AC_REQUIRE_AUX_FILE([missing])dnl
705if test x"${MISSING+set}" != xset; then
706  MISSING="\${SHELL} '$am_aux_dir/missing'"
707fi
708# Use eval to expand $SHELL
709if eval "$MISSING --is-lightweight"; then
710  am_missing_run="$MISSING "
711else
712  am_missing_run=
713  AC_MSG_WARN(['missing' script is too old or missing])
714fi
715])
716
717# Helper functions for option handling.                     -*- Autoconf -*-
718
719# Copyright (C) 2001-2020 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_MANGLE_OPTION(NAME)
726# -----------------------
727AC_DEFUN([_AM_MANGLE_OPTION],
728[[_AM_OPTION_]m4_bpatsubst($1, [[^a-zA-Z0-9_]], [_])])
729
730# _AM_SET_OPTION(NAME)
731# --------------------
732# Set option NAME.  Presently that only means defining a flag for this option.
733AC_DEFUN([_AM_SET_OPTION],
734[m4_define(_AM_MANGLE_OPTION([$1]), [1])])
735
736# _AM_SET_OPTIONS(OPTIONS)
737# ------------------------
738# OPTIONS is a space-separated list of Automake options.
739AC_DEFUN([_AM_SET_OPTIONS],
740[m4_foreach_w([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])])
741
742# _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET])
743# -------------------------------------------
744# Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
745AC_DEFUN([_AM_IF_OPTION],
746[m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])
747
748# Copyright (C) 1999-2020 Free Software Foundation, Inc.
749#
750# This file is free software; the Free Software Foundation
751# gives unlimited permission to copy and/or distribute it,
752# with or without modifications, as long as this notice is preserved.
753
754# _AM_PROG_CC_C_O
755# ---------------
756# Like AC_PROG_CC_C_O, but changed for automake.  We rewrite AC_PROG_CC
757# to automatically call this.
758AC_DEFUN([_AM_PROG_CC_C_O],
759[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
760AC_REQUIRE_AUX_FILE([compile])dnl
761AC_LANG_PUSH([C])dnl
762AC_CACHE_CHECK(
763  [whether $CC understands -c and -o together],
764  [am_cv_prog_cc_c_o],
765  [AC_LANG_CONFTEST([AC_LANG_PROGRAM([])])
766  # Make sure it works both with $CC and with simple cc.
767  # Following AC_PROG_CC_C_O, we do the test twice because some
768  # compilers refuse to overwrite an existing .o file with -o,
769  # though they will create one.
770  am_cv_prog_cc_c_o=yes
771  for am_i in 1 2; do
772    if AM_RUN_LOG([$CC -c conftest.$ac_ext -o conftest2.$ac_objext]) \
773         && test -f conftest2.$ac_objext; then
774      : OK
775    else
776      am_cv_prog_cc_c_o=no
777      break
778    fi
779  done
780  rm -f core conftest*
781  unset am_i])
782if test "$am_cv_prog_cc_c_o" != yes; then
783   # Losing compiler, so override with the script.
784   # FIXME: It is wrong to rewrite CC.
785   # But if we don't then we get into trouble of one sort or another.
786   # A longer-term fix would be to have automake use am__CC in this case,
787   # and then we could set am__CC="\$(top_srcdir)/compile \$(CC)"
788   CC="$am_aux_dir/compile $CC"
789fi
790AC_LANG_POP([C])])
791
792# For backward compatibility.
793AC_DEFUN_ONCE([AM_PROG_CC_C_O], [AC_REQUIRE([AC_PROG_CC])])
794
795# Copyright (C) 2001-2020 Free Software Foundation, Inc.
796#
797# This file is free software; the Free Software Foundation
798# gives unlimited permission to copy and/or distribute it,
799# with or without modifications, as long as this notice is preserved.
800
801# AM_RUN_LOG(COMMAND)
802# -------------------
803# Run COMMAND, save the exit status in ac_status, and log it.
804# (This has been adapted from Autoconf's _AC_RUN_LOG macro.)
805AC_DEFUN([AM_RUN_LOG],
806[{ echo "$as_me:$LINENO: $1" >&AS_MESSAGE_LOG_FD
807   ($1) >&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD
808   ac_status=$?
809   echo "$as_me:$LINENO: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
810   (exit $ac_status); }])
811
812# Check to make sure that the build environment is sane.    -*- Autoconf -*-
813
814# Copyright (C) 1996-2020 Free Software Foundation, Inc.
815#
816# This file is free software; the Free Software Foundation
817# gives unlimited permission to copy and/or distribute it,
818# with or without modifications, as long as this notice is preserved.
819
820# AM_SANITY_CHECK
821# ---------------
822AC_DEFUN([AM_SANITY_CHECK],
823[AC_MSG_CHECKING([whether build environment is sane])
824# Reject unsafe characters in $srcdir or the absolute working directory
825# name.  Accept space and tab only in the latter.
826am_lf='
827'
828case `pwd` in
829  *[[\\\"\#\$\&\'\`$am_lf]]*)
830    AC_MSG_ERROR([unsafe absolute working directory name]);;
831esac
832case $srcdir in
833  *[[\\\"\#\$\&\'\`$am_lf\ \	]]*)
834    AC_MSG_ERROR([unsafe srcdir value: '$srcdir']);;
835esac
836
837# Do 'set' in a subshell so we don't clobber the current shell's
838# arguments.  Must try -L first in case configure is actually a
839# symlink; some systems play weird games with the mod time of symlinks
840# (eg FreeBSD returns the mod time of the symlink's containing
841# directory).
842if (
843   am_has_slept=no
844   for am_try in 1 2; do
845     echo "timestamp, slept: $am_has_slept" > conftest.file
846     set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
847     if test "$[*]" = "X"; then
848	# -L didn't work.
849	set X `ls -t "$srcdir/configure" conftest.file`
850     fi
851     if test "$[*]" != "X $srcdir/configure conftest.file" \
852	&& test "$[*]" != "X conftest.file $srcdir/configure"; then
853
854	# If neither matched, then we have a broken ls.  This can happen
855	# if, for instance, CONFIG_SHELL is bash and it inherits a
856	# broken ls alias from the environment.  This has actually
857	# happened.  Such a system could not be considered "sane".
858	AC_MSG_ERROR([ls -t appears to fail.  Make sure there is not a broken
859  alias in your environment])
860     fi
861     if test "$[2]" = conftest.file || test $am_try -eq 2; then
862       break
863     fi
864     # Just in case.
865     sleep 1
866     am_has_slept=yes
867   done
868   test "$[2]" = conftest.file
869   )
870then
871   # Ok.
872   :
873else
874   AC_MSG_ERROR([newly created file is older than distributed files!
875Check your system clock])
876fi
877AC_MSG_RESULT([yes])
878# If we didn't sleep, we still need to ensure time stamps of config.status and
879# generated files are strictly newer.
880am_sleep_pid=
881if grep 'slept: no' conftest.file >/dev/null 2>&1; then
882  ( sleep 1 ) &
883  am_sleep_pid=$!
884fi
885AC_CONFIG_COMMANDS_PRE(
886  [AC_MSG_CHECKING([that generated files are newer than configure])
887   if test -n "$am_sleep_pid"; then
888     # Hide warnings about reused PIDs.
889     wait $am_sleep_pid 2>/dev/null
890   fi
891   AC_MSG_RESULT([done])])
892rm -f conftest.file
893])
894
895# Copyright (C) 2009-2020 Free Software Foundation, Inc.
896#
897# This file is free software; the Free Software Foundation
898# gives unlimited permission to copy and/or distribute it,
899# with or without modifications, as long as this notice is preserved.
900
901# AM_SILENT_RULES([DEFAULT])
902# --------------------------
903# Enable less verbose build rules; with the default set to DEFAULT
904# ("yes" being less verbose, "no" or empty being verbose).
905AC_DEFUN([AM_SILENT_RULES],
906[AC_ARG_ENABLE([silent-rules], [dnl
907AS_HELP_STRING(
908  [--enable-silent-rules],
909  [less verbose build output (undo: "make V=1")])
910AS_HELP_STRING(
911  [--disable-silent-rules],
912  [verbose build output (undo: "make V=0")])dnl
913])
914case $enable_silent_rules in @%:@ (((
915  yes) AM_DEFAULT_VERBOSITY=0;;
916   no) AM_DEFAULT_VERBOSITY=1;;
917    *) AM_DEFAULT_VERBOSITY=m4_if([$1], [yes], [0], [1]);;
918esac
919dnl
920dnl A few 'make' implementations (e.g., NonStop OS and NextStep)
921dnl do not support nested variable expansions.
922dnl See automake bug#9928 and bug#10237.
923am_make=${MAKE-make}
924AC_CACHE_CHECK([whether $am_make supports nested variables],
925   [am_cv_make_support_nested_variables],
926   [if AS_ECHO([['TRUE=$(BAR$(V))
927BAR0=false
928BAR1=true
929V=1
930am__doit:
931	@$(TRUE)
932.PHONY: am__doit']]) | $am_make -f - >/dev/null 2>&1; then
933  am_cv_make_support_nested_variables=yes
934else
935  am_cv_make_support_nested_variables=no
936fi])
937if test $am_cv_make_support_nested_variables = yes; then
938  dnl Using '$V' instead of '$(V)' breaks IRIX make.
939  AM_V='$(V)'
940  AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
941else
942  AM_V=$AM_DEFAULT_VERBOSITY
943  AM_DEFAULT_V=$AM_DEFAULT_VERBOSITY
944fi
945AC_SUBST([AM_V])dnl
946AM_SUBST_NOTMAKE([AM_V])dnl
947AC_SUBST([AM_DEFAULT_V])dnl
948AM_SUBST_NOTMAKE([AM_DEFAULT_V])dnl
949AC_SUBST([AM_DEFAULT_VERBOSITY])dnl
950AM_BACKSLASH='\'
951AC_SUBST([AM_BACKSLASH])dnl
952_AM_SUBST_NOTMAKE([AM_BACKSLASH])dnl
953])
954
955# Copyright (C) 2001-2020 Free Software Foundation, Inc.
956#
957# This file is free software; the Free Software Foundation
958# gives unlimited permission to copy and/or distribute it,
959# with or without modifications, as long as this notice is preserved.
960
961# AM_PROG_INSTALL_STRIP
962# ---------------------
963# One issue with vendor 'install' (even GNU) is that you can't
964# specify the program used to strip binaries.  This is especially
965# annoying in cross-compiling environments, where the build's strip
966# is unlikely to handle the host's binaries.
967# Fortunately install-sh will honor a STRIPPROG variable, so we
968# always use install-sh in "make install-strip", and initialize
969# STRIPPROG with the value of the STRIP variable (set by the user).
970AC_DEFUN([AM_PROG_INSTALL_STRIP],
971[AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
972# Installed binaries are usually stripped using 'strip' when the user
973# run "make install-strip".  However 'strip' might not be the right
974# tool to use in cross-compilation environments, therefore Automake
975# will honor the 'STRIP' environment variable to overrule this program.
976dnl Don't test for $cross_compiling = yes, because it might be 'maybe'.
977if test "$cross_compiling" != no; then
978  AC_CHECK_TOOL([STRIP], [strip], :)
979fi
980INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
981AC_SUBST([INSTALL_STRIP_PROGRAM])])
982
983# Copyright (C) 2006-2020 Free Software Foundation, Inc.
984#
985# This file is free software; the Free Software Foundation
986# gives unlimited permission to copy and/or distribute it,
987# with or without modifications, as long as this notice is preserved.
988
989# _AM_SUBST_NOTMAKE(VARIABLE)
990# ---------------------------
991# Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in.
992# This macro is traced by Automake.
993AC_DEFUN([_AM_SUBST_NOTMAKE])
994
995# AM_SUBST_NOTMAKE(VARIABLE)
996# --------------------------
997# Public sister of _AM_SUBST_NOTMAKE.
998AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
999
1000# Check how to create a tarball.                            -*- Autoconf -*-
1001
1002# Copyright (C) 2004-2020 Free Software Foundation, Inc.
1003#
1004# This file is free software; the Free Software Foundation
1005# gives unlimited permission to copy and/or distribute it,
1006# with or without modifications, as long as this notice is preserved.
1007
1008# _AM_PROG_TAR(FORMAT)
1009# --------------------
1010# Check how to create a tarball in format FORMAT.
1011# FORMAT should be one of 'v7', 'ustar', or 'pax'.
1012#
1013# Substitute a variable $(am__tar) that is a command
1014# writing to stdout a FORMAT-tarball containing the directory
1015# $tardir.
1016#     tardir=directory && $(am__tar) > result.tar
1017#
1018# Substitute a variable $(am__untar) that extract such
1019# a tarball read from stdin.
1020#     $(am__untar) < result.tar
1021#
1022AC_DEFUN([_AM_PROG_TAR],
1023[# Always define AMTAR for backward compatibility.  Yes, it's still used
1024# in the wild :-(  We should find a proper way to deprecate it ...
1025AC_SUBST([AMTAR], ['$${TAR-tar}'])
1026
1027# We'll loop over all known methods to create a tar archive until one works.
1028_am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
1029
1030m4_if([$1], [v7],
1031  [am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'],
1032
1033  [m4_case([$1],
1034    [ustar],
1035     [# The POSIX 1988 'ustar' format is defined with fixed-size fields.
1036      # There is notably a 21 bits limit for the UID and the GID.  In fact,
1037      # the 'pax' utility can hang on bigger UID/GID (see automake bug#8343
1038      # and bug#13588).
1039      am_max_uid=2097151 # 2^21 - 1
1040      am_max_gid=$am_max_uid
1041      # The $UID and $GID variables are not portable, so we need to resort
1042      # to the POSIX-mandated id(1) utility.  Errors in the 'id' calls
1043      # below are definitely unexpected, so allow the users to see them
1044      # (that is, avoid stderr redirection).
1045      am_uid=`id -u || echo unknown`
1046      am_gid=`id -g || echo unknown`
1047      AC_MSG_CHECKING([whether UID '$am_uid' is supported by ustar format])
1048      if test $am_uid -le $am_max_uid; then
1049         AC_MSG_RESULT([yes])
1050      else
1051         AC_MSG_RESULT([no])
1052         _am_tools=none
1053      fi
1054      AC_MSG_CHECKING([whether GID '$am_gid' is supported by ustar format])
1055      if test $am_gid -le $am_max_gid; then
1056         AC_MSG_RESULT([yes])
1057      else
1058        AC_MSG_RESULT([no])
1059        _am_tools=none
1060      fi],
1061
1062  [pax],
1063    [],
1064
1065  [m4_fatal([Unknown tar format])])
1066
1067  AC_MSG_CHECKING([how to create a $1 tar archive])
1068
1069  # Go ahead even if we have the value already cached.  We do so because we
1070  # need to set the values for the 'am__tar' and 'am__untar' variables.
1071  _am_tools=${am_cv_prog_tar_$1-$_am_tools}
1072
1073  for _am_tool in $_am_tools; do
1074    case $_am_tool in
1075    gnutar)
1076      for _am_tar in tar gnutar gtar; do
1077        AM_RUN_LOG([$_am_tar --version]) && break
1078      done
1079      am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"'
1080      am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"'
1081      am__untar="$_am_tar -xf -"
1082      ;;
1083    plaintar)
1084      # Must skip GNU tar: if it does not support --format= it doesn't create
1085      # ustar tarball either.
1086      (tar --version) >/dev/null 2>&1 && continue
1087      am__tar='tar chf - "$$tardir"'
1088      am__tar_='tar chf - "$tardir"'
1089      am__untar='tar xf -'
1090      ;;
1091    pax)
1092      am__tar='pax -L -x $1 -w "$$tardir"'
1093      am__tar_='pax -L -x $1 -w "$tardir"'
1094      am__untar='pax -r'
1095      ;;
1096    cpio)
1097      am__tar='find "$$tardir" -print | cpio -o -H $1 -L'
1098      am__tar_='find "$tardir" -print | cpio -o -H $1 -L'
1099      am__untar='cpio -i -H $1 -d'
1100      ;;
1101    none)
1102      am__tar=false
1103      am__tar_=false
1104      am__untar=false
1105      ;;
1106    esac
1107
1108    # If the value was cached, stop now.  We just wanted to have am__tar
1109    # and am__untar set.
1110    test -n "${am_cv_prog_tar_$1}" && break
1111
1112    # tar/untar a dummy directory, and stop if the command works.
1113    rm -rf conftest.dir
1114    mkdir conftest.dir
1115    echo GrepMe > conftest.dir/file
1116    AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar])
1117    rm -rf conftest.dir
1118    if test -s conftest.tar; then
1119      AM_RUN_LOG([$am__untar <conftest.tar])
1120      AM_RUN_LOG([cat conftest.dir/file])
1121      grep GrepMe conftest.dir/file >/dev/null 2>&1 && break
1122    fi
1123  done
1124  rm -rf conftest.dir
1125
1126  AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])
1127  AC_MSG_RESULT([$am_cv_prog_tar_$1])])
1128
1129AC_SUBST([am__tar])
1130AC_SUBST([am__untar])
1131]) # _AM_PROG_TAR
1132
1133