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1 # generated automatically by aclocal 1.16.5 -*- Autoconf -*-
3 # Copyright (C) 1996-2021 Free Software Foundation, Inc.
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.
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
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545 # POSIX will say in a future version that running "rm -f" with no argument
546 # is OK; and we want to be able to make that assumption in our Makefile
547 # recipes. So use an aggressive probe to check that the usage we want is
548 # actually supported "in the wild" to an acceptable degree.
549 # See automake bug#10828.
550 # To make any issue more visible, cause the running configure to be aborted
551 # by default if the 'rm' program in use doesn't match our expectations; the
552 # user can still override this though.
553 if rm -f && rm -fr && rm -rf; then : OK; else
554 cat >&2 <<'END'
555 Oops!
557 Your 'rm' program seems unable to run without file operands specified
558 on the command line, even when the '-f' option is present. This is contrary
559 to the behaviour of most rm programs out there, and not conforming with
560 the upcoming POSIX standard: <http://austingroupbugs.net/view.php?id=542>
562 Please tell bug-automake@gnu.org about your system, including the value
563 of your $PATH and any error possibly output before this message. This
564 can help us improve future automake versions.
566 END
567 if test x"$ACCEPT_INFERIOR_RM_PROGRAM" = x"yes"; then
568 echo 'Configuration will proceed anyway, since you have set the' >&2
569 echo 'ACCEPT_INFERIOR_RM_PROGRAM variable to "yes"' >&2
570 echo >&2
571 else
572 cat >&2 <<'END'
573 Aborting the configuration process, to ensure you take notice of the issue.
575 You can download and install GNU coreutils to get an 'rm' implementation
576 that behaves properly: <https://www.gnu.org/software/coreutils/>.
578 If you want to complete the configuration process using your problematic
579 'rm' anyway, export the environment variable ACCEPT_INFERIOR_RM_PROGRAM
580 to "yes", and re-run configure.
582 END
583 AC_MSG_ERROR([Your 'rm' program is bad, sorry.])
584 fi
585 fi
586 dnl The trailing newline in this macro's definition is deliberate, for
587 dnl backward compatibility and to allow trailing 'dnl'-style comments
588 dnl after the AM_INIT_AUTOMAKE invocation. See automake bug#16841.
589 ])
591 dnl Hook into '_AC_COMPILER_EXEEXT' early to learn its expansion. Do not
592 dnl add the conditional right here, as _AC_COMPILER_EXEEXT may be further
593 dnl mangled by Autoconf and run in a shell conditional statement.
594 m4_define([_AC_COMPILER_EXEEXT],
595 m4_defn([_AC_COMPILER_EXEEXT])[m4_provide([_AM_COMPILER_EXEEXT])])
597 # When config.status generates a header, we must update the stamp-h file.
598 # This file resides in the same directory as the config header
599 # that is generated. The stamp files are numbered to have different names.
601 # Autoconf calls _AC_AM_CONFIG_HEADER_HOOK (when defined) in the
602 # loop where config.status creates the headers, so we can generate
603 # our stamp files there.
604 AC_DEFUN([_AC_AM_CONFIG_HEADER_HOOK],
605 [# Compute $1's index in $config_headers.
606 _am_arg=$1
607 _am_stamp_count=1
608 for _am_header in $config_headers :; do
609 case $_am_header in
610 $_am_arg | $_am_arg:* )
611 break ;;
612 * )
613 _am_stamp_count=`expr $_am_stamp_count + 1` ;;
614 esac
615 done
616 echo "timestamp for $_am_arg" >`AS_DIRNAME(["$_am_arg"])`/stamp-h[]$_am_stamp_count])
618 # Copyright (C) 2001-2021 Free Software Foundation, Inc.
619 #
620 # This file is free software; the Free Software Foundation
621 # gives unlimited permission to copy and/or distribute it,
622 # with or without modifications, as long as this notice is preserved.
624 # AM_PROG_INSTALL_SH
625 # ------------------
626 # Define $install_sh.
627 AC_DEFUN([AM_PROG_INSTALL_SH],
628 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
629 if test x"${install_sh+set}" != xset; then
630 case $am_aux_dir in
631 *\ * | *\ *)
632 install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
633 *)
634 install_sh="\${SHELL} $am_aux_dir/install-sh"
635 esac
636 fi
637 AC_SUBST([install_sh])])
639 # Copyright (C) 2003-2021 Free Software Foundation, Inc.
640 #
641 # This file is free software; the Free Software Foundation
642 # gives unlimited permission to copy and/or distribute it,
643 # with or without modifications, as long as this notice is preserved.
645 # Check whether the underlying file-system supports filenames
646 # with a leading dot. For instance MS-DOS doesn't.
647 AC_DEFUN([AM_SET_LEADING_DOT],
648 [rm -rf .tst 2>/dev/null
649 mkdir .tst 2>/dev/null
650 if test -d .tst; then
651 am__leading_dot=.
652 else
653 am__leading_dot=_
654 fi
655 rmdir .tst 2>/dev/null
656 AC_SUBST([am__leading_dot])])
658 # Add --enable-maintainer-mode option to configure. -*- Autoconf -*-
659 # From Jim Meyering
661 # Copyright (C) 1996-2021 Free Software Foundation, Inc.
662 #
663 # This file is free software; the Free Software Foundation
664 # gives unlimited permission to copy and/or distribute it,
665 # with or without modifications, as long as this notice is preserved.
667 # AM_MAINTAINER_MODE([DEFAULT-MODE])
668 # ----------------------------------
669 # Control maintainer-specific portions of Makefiles.
670 # Default is to disable them, unless 'enable' is passed literally.
671 # For symmetry, 'disable' may be passed as well. Anyway, the user
672 # can override the default with the --enable/--disable switch.
673 AC_DEFUN([AM_MAINTAINER_MODE],
674 [m4_case(m4_default([$1], [disable]),
675 [enable], [m4_define([am_maintainer_other], [disable])],
676 [disable], [m4_define([am_maintainer_other], [enable])],
677 [m4_define([am_maintainer_other], [enable])
678 m4_warn([syntax], [unexpected argument to AM@&t@_MAINTAINER_MODE: $1])])
679 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
680 dnl maintainer-mode's default is 'disable' unless 'enable' is passed
681 AC_ARG_ENABLE([maintainer-mode],
682 [AS_HELP_STRING([--]am_maintainer_other[-maintainer-mode],
683 am_maintainer_other[ make rules and dependencies not useful
684 (and sometimes confusing) to the casual installer])],
685 [USE_MAINTAINER_MODE=$enableval],
686 [USE_MAINTAINER_MODE=]m4_if(am_maintainer_other, [enable], [no], [yes]))
687 AC_MSG_RESULT([$USE_MAINTAINER_MODE])
688 AM_CONDITIONAL([MAINTAINER_MODE], [test $USE_MAINTAINER_MODE = yes])
689 MAINT=$MAINTAINER_MODE_TRUE
690 AC_SUBST([MAINT])dnl
691 ]
692 )
694 # Check to see how 'make' treats includes. -*- Autoconf -*-
696 # Copyright (C) 2001-2021 Free Software Foundation, Inc.
697 #
698 # This file is free software; the Free Software Foundation
699 # gives unlimited permission to copy and/or distribute it,
700 # with or without modifications, as long as this notice is preserved.
702 # AM_MAKE_INCLUDE()
703 # -----------------
704 # Check whether make has an 'include' directive that can support all
705 # the idioms we need for our automatic dependency tracking code.
706 AC_DEFUN([AM_MAKE_INCLUDE],
707 [AC_MSG_CHECKING([whether ${MAKE-make} supports the include directive])
708 cat > confinc.mk << 'END'
709 am__doit:
710 @echo this is the am__doit target >confinc.out
711 .PHONY: am__doit
712 END
713 am__include="#"
714 am__quote=
715 # BSD make does it like this.
716 echo '.include "confinc.mk" # ignored' > confmf.BSD
717 # Other make implementations (GNU, Solaris 10, AIX) do it like this.
718 echo 'include confinc.mk # ignored' > confmf.GNU
719 _am_result=no
720 for s in GNU BSD; do
721 AM_RUN_LOG([${MAKE-make} -f confmf.$s && cat confinc.out])
722 AS_CASE([$?:`cat confinc.out 2>/dev/null`],
723 ['0:this is the am__doit target'],
724 [AS_CASE([$s],
725 [BSD], [am__include='.include' am__quote='"'],
726 [am__include='include' am__quote=''])])
727 if test "$am__include" != "#"; then
728 _am_result="yes ($s style)"
729 break
730 fi
731 done
732 rm -f confinc.* confmf.*
733 AC_MSG_RESULT([${_am_result}])
734 AC_SUBST([am__include])])
735 AC_SUBST([am__quote])])
737 # Fake the existence of programs that GNU maintainers use. -*- Autoconf -*-
739 # Copyright (C) 1997-2021 Free Software Foundation, Inc.
740 #
741 # This file is free software; the Free Software Foundation
742 # gives unlimited permission to copy and/or distribute it,
743 # with or without modifications, as long as this notice is preserved.
745 # AM_MISSING_PROG(NAME, PROGRAM)
746 # ------------------------------
747 AC_DEFUN([AM_MISSING_PROG],
748 [AC_REQUIRE([AM_MISSING_HAS_RUN])
749 $1=${$1-"${am_missing_run}$2"}
750 AC_SUBST($1)])
752 # AM_MISSING_HAS_RUN
753 # ------------------
754 # Define MISSING if not defined so far and test if it is modern enough.
755 # If it is, set am_missing_run to use it, otherwise, to nothing.
756 AC_DEFUN([AM_MISSING_HAS_RUN],
757 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
758 AC_REQUIRE_AUX_FILE([missing])dnl
759 if test x"${MISSING+set}" != xset; then
760 MISSING="\${SHELL} '$am_aux_dir/missing'"
761 fi
762 # Use eval to expand $SHELL
763 if eval "$MISSING --is-lightweight"; then
764 am_missing_run="$MISSING "
765 else
766 am_missing_run=
767 AC_MSG_WARN(['missing' script is too old or missing])
768 fi
769 ])
771 # Helper functions for option handling. -*- Autoconf -*-
773 # Copyright (C) 2001-2021 Free Software Foundation, Inc.
774 #
775 # This file is free software; the Free Software Foundation
776 # gives unlimited permission to copy and/or distribute it,
777 # with or without modifications, as long as this notice is preserved.
779 # _AM_MANGLE_OPTION(NAME)
780 # -----------------------
781 AC_DEFUN([_AM_MANGLE_OPTION],
782 [[_AM_OPTION_]m4_bpatsubst($1, [[^a-zA-Z0-9_]], [_])])
784 # _AM_SET_OPTION(NAME)
785 # --------------------
786 # Set option NAME. Presently that only means defining a flag for this option.
787 AC_DEFUN([_AM_SET_OPTION],
788 [m4_define(_AM_MANGLE_OPTION([$1]), [1])])
790 # _AM_SET_OPTIONS(OPTIONS)
791 # ------------------------
792 # OPTIONS is a space-separated list of Automake options.
793 AC_DEFUN([_AM_SET_OPTIONS],
794 [m4_foreach_w([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])])
796 # _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET])
797 # -------------------------------------------
798 # Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
799 AC_DEFUN([_AM_IF_OPTION],
800 [m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])
802 # Copyright (C) 2001-2021 Free Software Foundation, Inc.
803 #
804 # This file is free software; the Free Software Foundation
805 # gives unlimited permission to copy and/or distribute it,
806 # with or without modifications, as long as this notice is preserved.
808 # AM_RUN_LOG(COMMAND)
809 # -------------------
810 # Run COMMAND, save the exit status in ac_status, and log it.
811 # (This has been adapted from Autoconf's _AC_RUN_LOG macro.)
812 AC_DEFUN([AM_RUN_LOG],
813 [{ echo "$as_me:$LINENO: $1" >&AS_MESSAGE_LOG_FD
814 ($1) >&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD
815 ac_status=$?
816 echo "$as_me:$LINENO: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
817 (exit $ac_status); }])
819 # Check to make sure that the build environment is sane. -*- Autoconf -*-
821 # Copyright (C) 1996-2021 Free Software Foundation, Inc.
822 #
823 # This file is free software; the Free Software Foundation
824 # gives unlimited permission to copy and/or distribute it,
825 # with or without modifications, as long as this notice is preserved.
827 # AM_SANITY_CHECK
828 # ---------------
829 AC_DEFUN([AM_SANITY_CHECK],
830 [AC_MSG_CHECKING([whether build environment is sane])
831 # Reject unsafe characters in $srcdir or the absolute working directory
832 # name. Accept space and tab only in the latter.
833 am_lf='
834 '
835 case `pwd` in
836 *[[\\\"\#\$\&\'\`$am_lf]]*)
837 AC_MSG_ERROR([unsafe absolute working directory name]);;
838 esac
839 case $srcdir in
840 *[[\\\"\#\$\&\'\`$am_lf\ \ ]]*)
841 AC_MSG_ERROR([unsafe srcdir value: '$srcdir']);;
842 esac
844 # Do 'set' in a subshell so we don't clobber the current shell's
845 # arguments. Must try -L first in case configure is actually a
846 # symlink; some systems play weird games with the mod time of symlinks
847 # (eg FreeBSD returns the mod time of the symlink's containing
848 # directory).
849 if (
850 am_has_slept=no
851 for am_try in 1 2; do
852 echo "timestamp, slept: $am_has_slept" > conftest.file
853 set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
854 if test "$[*]" = "X"; then
855 # -L didn't work.
856 set X `ls -t "$srcdir/configure" conftest.file`
857 fi
858 if test "$[*]" != "X $srcdir/configure conftest.file" \
859 && test "$[*]" != "X conftest.file $srcdir/configure"; then
861 # If neither matched, then we have a broken ls. This can happen
862 # if, for instance, CONFIG_SHELL is bash and it inherits a
863 # broken ls alias from the environment. This has actually
864 # happened. Such a system could not be considered "sane".
865 AC_MSG_ERROR([ls -t appears to fail. Make sure there is not a broken
866 alias in your environment])
867 fi
868 if test "$[2]" = conftest.file || test $am_try -eq 2; then
869 break
870 fi
871 # Just in case.
872 sleep 1
873 am_has_slept=yes
874 done
875 test "$[2]" = conftest.file
876 )
877 then
878 # Ok.
879 :
880 else
881 AC_MSG_ERROR([newly created file is older than distributed files!
882 Check your system clock])
883 fi
884 AC_MSG_RESULT([yes])
885 # If we didn't sleep, we still need to ensure time stamps of config.status and
886 # generated files are strictly newer.
887 am_sleep_pid=
888 if grep 'slept: no' conftest.file >/dev/null 2>&1; then
889 ( sleep 1 ) &
890 am_sleep_pid=$!
891 fi
892 AC_CONFIG_COMMANDS_PRE(
893 [AC_MSG_CHECKING([that generated files are newer than configure])
894 if test -n "$am_sleep_pid"; then
895 # Hide warnings about reused PIDs.
896 wait $am_sleep_pid 2>/dev/null
897 fi
898 AC_MSG_RESULT([done])])
899 rm -f conftest.file
900 ])
902 # Copyright (C) 2009-2021 Free Software Foundation, Inc.
903 #
904 # This file is free software; the Free Software Foundation
905 # gives unlimited permission to copy and/or distribute it,
906 # with or without modifications, as long as this notice is preserved.
908 # AM_SILENT_RULES([DEFAULT])
909 # --------------------------
910 # Enable less verbose build rules; with the default set to DEFAULT
911 # ("yes" being less verbose, "no" or empty being verbose).
912 AC_DEFUN([AM_SILENT_RULES],
913 [AC_ARG_ENABLE([silent-rules], [dnl
914 AS_HELP_STRING(
915 [--enable-silent-rules],
916 [less verbose build output (undo: "make V=1")])
917 AS_HELP_STRING(
918 [--disable-silent-rules],
919 [verbose build output (undo: "make V=0")])dnl
920 ])
921 case $enable_silent_rules in @%:@ (((
922 yes) AM_DEFAULT_VERBOSITY=0;;
923 no) AM_DEFAULT_VERBOSITY=1;;
924 *) AM_DEFAULT_VERBOSITY=m4_if([$1], [yes], [0], [1]);;
925 esac
926 dnl
927 dnl A few 'make' implementations (e.g., NonStop OS and NextStep)
928 dnl do not support nested variable expansions.
929 dnl See automake bug#9928 and bug#10237.
930 am_make=${MAKE-make}
931 AC_CACHE_CHECK([whether $am_make supports nested variables],
932 [am_cv_make_support_nested_variables],
933 [if AS_ECHO([['TRUE=$(BAR$(V))
934 BAR0=false
935 BAR1=true
936 V=1
937 am__doit:
938 @$(TRUE)
939 .PHONY: am__doit']]) | $am_make -f - >/dev/null 2>&1; then
940 am_cv_make_support_nested_variables=yes
941 else
942 am_cv_make_support_nested_variables=no
943 fi])
944 if test $am_cv_make_support_nested_variables = yes; then
945 dnl Using '$V' instead of '$(V)' breaks IRIX make.
946 AM_V='$(V)'
947 AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
948 else
949 AM_V=$AM_DEFAULT_VERBOSITY
950 AM_DEFAULT_V=$AM_DEFAULT_VERBOSITY
951 fi
952 AC_SUBST([AM_V])dnl
953 AM_SUBST_NOTMAKE([AM_V])dnl
954 AC_SUBST([AM_DEFAULT_V])dnl
955 AM_SUBST_NOTMAKE([AM_DEFAULT_V])dnl
956 AC_SUBST([AM_DEFAULT_VERBOSITY])dnl
957 AM_BACKSLASH='\'
958 AC_SUBST([AM_BACKSLASH])dnl
959 _AM_SUBST_NOTMAKE([AM_BACKSLASH])dnl
960 ])
962 # Copyright (C) 2001-2021 Free Software Foundation, Inc.
963 #
964 # This file is free software; the Free Software Foundation
965 # gives unlimited permission to copy and/or distribute it,
966 # with or without modifications, as long as this notice is preserved.
968 # AM_PROG_INSTALL_STRIP
969 # ---------------------
970 # One issue with vendor 'install' (even GNU) is that you can't
971 # specify the program used to strip binaries. This is especially
972 # annoying in cross-compiling environments, where the build's strip
973 # is unlikely to handle the host's binaries.
974 # Fortunately install-sh will honor a STRIPPROG variable, so we
975 # always use install-sh in "make install-strip", and initialize
976 # STRIPPROG with the value of the STRIP variable (set by the user).
977 AC_DEFUN([AM_PROG_INSTALL_STRIP],
978 [AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
979 # Installed binaries are usually stripped using 'strip' when the user
980 # run "make install-strip". However 'strip' might not be the right
981 # tool to use in cross-compilation environments, therefore Automake
982 # will honor the 'STRIP' environment variable to overrule this program.
983 dnl Don't test for $cross_compiling = yes, because it might be 'maybe'.
984 if test "$cross_compiling" != no; then
985 AC_CHECK_TOOL([STRIP], [strip], :)
986 fi
987 INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
988 AC_SUBST([INSTALL_STRIP_PROGRAM])])
990 # Copyright (C) 2006-2021 Free Software Foundation, Inc.
991 #
992 # This file is free software; the Free Software Foundation
993 # gives unlimited permission to copy and/or distribute it,
994 # with or without modifications, as long as this notice is preserved.
996 # _AM_SUBST_NOTMAKE(VARIABLE)
997 # ---------------------------
998 # Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in.
999 # This macro is traced by Automake.
1000 AC_DEFUN([_AM_SUBST_NOTMAKE])
1002 # AM_SUBST_NOTMAKE(VARIABLE)
1003 # --------------------------
1004 # Public sister of _AM_SUBST_NOTMAKE.
1005 AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
1007 # Check how to create a tarball. -*- Autoconf -*-
1009 # Copyright (C) 2004-2021 Free Software Foundation, Inc.
1010 #
1011 # This file is free software; the Free Software Foundation
1012 # gives unlimited permission to copy and/or distribute it,
1013 # with or without modifications, as long as this notice is preserved.
1015 # _AM_PROG_TAR(FORMAT)
1016 # --------------------
1017 # Check how to create a tarball in format FORMAT.
1018 # FORMAT should be one of 'v7', 'ustar', or 'pax'.
1019 #
1020 # Substitute a variable $(am__tar) that is a command
1021 # writing to stdout a FORMAT-tarball containing the directory
1022 # $tardir.
1023 # tardir=directory && $(am__tar) > result.tar
1024 #
1025 # Substitute a variable $(am__untar) that extract such
1026 # a tarball read from stdin.
1027 # $(am__untar) < result.tar
1028 #
1029 AC_DEFUN([_AM_PROG_TAR],
1030 [# Always define AMTAR for backward compatibility. Yes, it's still used
1031 # in the wild :-( We should find a proper way to deprecate it ...
1032 AC_SUBST([AMTAR], ['$${TAR-tar}'])
1034 # We'll loop over all known methods to create a tar archive until one works.
1035 _am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
1037 m4_if([$1], [v7],
1038 [am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'],
1040 [m4_case([$1],
1041 [ustar],
1042 [# The POSIX 1988 'ustar' format is defined with fixed-size fields.
1043 # There is notably a 21 bits limit for the UID and the GID. In fact,
1044 # the 'pax' utility can hang on bigger UID/GID (see automake bug#8343
1045 # and bug#13588).
1046 am_max_uid=2097151 # 2^21 - 1
1047 am_max_gid=$am_max_uid
1048 # The $UID and $GID variables are not portable, so we need to resort
1049 # to the POSIX-mandated id(1) utility. Errors in the 'id' calls
1050 # below are definitely unexpected, so allow the users to see them
1051 # (that is, avoid stderr redirection).
1052 am_uid=`id -u || echo unknown`
1053 am_gid=`id -g || echo unknown`
1054 AC_MSG_CHECKING([whether UID '$am_uid' is supported by ustar format])
1055 if test $am_uid -le $am_max_uid; then
1056 AC_MSG_RESULT([yes])
1057 else
1058 AC_MSG_RESULT([no])
1059 _am_tools=none
1060 fi
1061 AC_MSG_CHECKING([whether GID '$am_gid' is supported by ustar format])
1062 if test $am_gid -le $am_max_gid; then
1063 AC_MSG_RESULT([yes])
1064 else
1065 AC_MSG_RESULT([no])
1066 _am_tools=none
1067 fi],
1069 [pax],
1070 [],
1072 [m4_fatal([Unknown tar format])])
1074 AC_MSG_CHECKING([how to create a $1 tar archive])
1076 # Go ahead even if we have the value already cached. We do so because we
1077 # need to set the values for the 'am__tar' and 'am__untar' variables.
1078 _am_tools=${am_cv_prog_tar_$1-$_am_tools}
1080 for _am_tool in $_am_tools; do
1081 case $_am_tool in
1082 gnutar)
1083 for _am_tar in tar gnutar gtar; do
1084 AM_RUN_LOG([$_am_tar --version]) && break
1085 done
1086 am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"'
1087 am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"'
1088 am__untar="$_am_tar -xf -"
1089 ;;
1090 plaintar)
1091 # Must skip GNU tar: if it does not support --format= it doesn't create
1092 # ustar tarball either.
1093 (tar --version) >/dev/null 2>&1 && continue
1094 am__tar='tar chf - "$$tardir"'
1095 am__tar_='tar chf - "$tardir"'
1096 am__untar='tar xf -'
1097 ;;
1098 pax)
1099 am__tar='pax -L -x $1 -w "$$tardir"'
1100 am__tar_='pax -L -x $1 -w "$tardir"'
1101 am__untar='pax -r'
1102 ;;
1103 cpio)
1104 am__tar='find "$$tardir" -print | cpio -o -H $1 -L'
1105 am__tar_='find "$tardir" -print | cpio -o -H $1 -L'
1106 am__untar='cpio -i -H $1 -d'
1107 ;;
1108 none)
1109 am__tar=false
1110 am__tar_=false
1111 am__untar=false
1112 ;;
1113 esac
1115 # If the value was cached, stop now. We just wanted to have am__tar
1116 # and am__untar set.
1117 test -n "${am_cv_prog_tar_$1}" && break
1119 # tar/untar a dummy directory, and stop if the command works.
1120 rm -rf conftest.dir
1121 mkdir conftest.dir
1122 echo GrepMe > conftest.dir/file
1123 AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar])
1124 rm -rf conftest.dir
1125 if test -s conftest.tar; then
1126 AM_RUN_LOG([$am__untar <conftest.tar])
1127 AM_RUN_LOG([cat conftest.dir/file])
1128 grep GrepMe conftest.dir/file >/dev/null 2>&1 && break
1129 fi
1130 done
1131 rm -rf conftest.dir
1133 AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])
1134 AC_MSG_RESULT([$am_cv_prog_tar_$1])])
1136 AC_SUBST([am__tar])
1137 AC_SUBST([am__untar])
1138 ]) # _AM_PROG_TAR