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1 # generated automatically by aclocal 1.16.3 -*- Autoconf -*-
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3 # Copyright (C) 1996-2020 Free Software Foundation, Inc.
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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
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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.
535 if rm -f && rm -fr && rm -rf; then : OK; else
536 cat >&2 <<'END'
537 Oops!
538
539 Your 'rm' program seems unable to run without file operands specified
540 on the command line, even when the '-f' option is present. This is contrary
541 to the behaviour of most rm programs out there, and not conforming with
542 the upcoming POSIX standard: <http://austingroupbugs.net/view.php?id=542>
543
544 Please tell bug-automake@gnu.org about your system, including the value
545 of your $PATH and any error possibly output before this message. This
546 can help us improve future automake versions.
547
548 END
549 if test x"$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'
555 Aborting the configuration process, to ensure you take notice of the issue.
556
557 You can download and install GNU coreutils to get an 'rm' implementation
558 that behaves properly: <https://www.gnu.org/software/coreutils/>.
559
560 If you want to complete the configuration process using your problematic
561 'rm' anyway, export the environment variable ACCEPT_INFERIOR_RM_PROGRAM
562 to "yes", and re-run configure.
563
564 END
565 AC_MSG_ERROR([Your 'rm' program is bad, sorry.])
566 fi
567 fi
568 dnl The trailing newline in this macro's definition is deliberate, for
569 dnl backward compatibility and to allow trailing 'dnl'-style comments
570 dnl after the AM_INIT_AUTOMAKE invocation. See automake bug#16841.
571 ])
572
573 dnl Hook into '_AC_COMPILER_EXEEXT' early to learn its expansion. Do not
574 dnl add the conditional right here, as _AC_COMPILER_EXEEXT may be further
575 dnl mangled by Autoconf and run in a shell conditional statement.
576 m4_define([_AC_COMPILER_EXEEXT],
577 m4_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.
586 AC_DEFUN([_AC_AM_CONFIG_HEADER_HOOK],
587 [# Compute $1's index in $config_headers.
588 _am_arg=$1
589 _am_stamp_count=1
590 for _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
597 done
598 echo "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 $install_sh.
609 AC_DEFUN([AM_PROG_INSTALL_SH],
610 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
611 if test x"${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
618 fi
619 AC_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.
629 AC_DEFUN([AM_SET_LEADING_DOT],
630 [rm -rf .tst 2>/dev/null
631 mkdir .tst 2>/dev/null
632 if test -d .tst; then
633 am__leading_dot=.
634 else
635 am__leading_dot=_
636 fi
637 rmdir .tst 2>/dev/null
638 AC_SUBST([am__leading_dot])])
639
640 # Add --enable-maintainer-mode option to configure. -*- Autoconf -*-
641 # From Jim Meyering
642
643 # Copyright (C) 1996-2020 Free Software Foundation, Inc.
644 #
645 # This file is free software; the Free Software Foundation
646 # gives unlimited permission to copy and/or distribute it,
647 # with or without modifications, as long as this notice is preserved.
648
649 # AM_MAINTAINER_MODE([DEFAULT-MODE])
650 # ----------------------------------
651 # Control maintainer-specific portions of Makefiles.
652 # Default is to disable them, unless 'enable' is passed literally.
653 # For symmetry, 'disable' may be passed as well. Anyway, the user
654 # can override the default with the --enable/--disable switch.
655 AC_DEFUN([AM_MAINTAINER_MODE],
656 [m4_case(m4_default([$1], [disable]),
657 [enable], [m4_define([am_maintainer_other], [disable])],
658 [disable], [m4_define([am_maintainer_other], [enable])],
659 [m4_define([am_maintainer_other], [enable])
660 m4_warn([syntax], [unexpected argument to AM@&t@_MAINTAINER_MODE: $1])])
661 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
662 dnl maintainer-mode's default is 'disable' unless 'enable' is passed
663 AC_ARG_ENABLE([maintainer-mode],
664 [AS_HELP_STRING([--]am_maintainer_other[-maintainer-mode],
665 am_maintainer_other[ make rules and dependencies not useful
666 (and sometimes confusing) to the casual installer])],
667 [USE_MAINTAINER_MODE=$enableval],
668 [USE_MAINTAINER_MODE=]m4_if(am_maintainer_other, [enable], [no], [yes]))
669 AC_MSG_RESULT([$USE_MAINTAINER_MODE])
670 AM_CONDITIONAL([MAINTAINER_MODE], [test $USE_MAINTAINER_MODE = yes])
671 MAINT=$MAINTAINER_MODE_TRUE
672 AC_SUBST([MAINT])dnl
673 ]
674 )
675
676 # Check to see how 'make' treats includes. -*- Autoconf -*-
677
678 # Copyright (C) 2001-2020 Free Software Foundation, Inc.
679 #
680 # This file is free software; the Free Software Foundation
681 # gives unlimited permission to copy and/or distribute it,
682 # with or without modifications, as long as this notice is preserved.
683
684 # AM_MAKE_INCLUDE()
685 # -----------------
686 # Check whether make has an 'include' directive that can support all
687 # the idioms we need for our automatic dependency tracking code.
688 AC_DEFUN([AM_MAKE_INCLUDE],
689 [AC_MSG_CHECKING([whether ${MAKE-make} supports the include directive])
690 cat > confinc.mk << 'END'
691 am__doit:
692 @echo this is the am__doit target >confinc.out
693 .PHONY: am__doit
694 END
695 am__include="#"
696 am__quote=
697 # BSD make does it like this.
698 echo '.include "confinc.mk" # ignored' > confmf.BSD
699 # Other make implementations (GNU, Solaris 10, AIX) do it like this.
700 echo 'include confinc.mk # ignored' > confmf.GNU
701 _am_result=no
702 for s in GNU BSD; do
703 AM_RUN_LOG([${MAKE-make} -f confmf.$s && cat confinc.out])
704 AS_CASE([$?:`cat confinc.out 2>/dev/null`],
705 ['0:this is the am__doit target'],
706 [AS_CASE([$s],
707 [BSD], [am__include='.include' am__quote='"'],
708 [am__include='include' am__quote=''])])
709 if test "$am__include" != "#"; then
710 _am_result="yes ($s style)"
711 break
712 fi
713 done
714 rm -f confinc.* confmf.*
715 AC_MSG_RESULT([${_am_result}])
716 AC_SUBST([am__include])])
717 AC_SUBST([am__quote])])
718
719 # Fake the existence of programs that GNU maintainers use. -*- Autoconf -*-
720
721 # Copyright (C) 1997-2020 Free Software Foundation, Inc.
722 #
723 # This file is free software; the Free Software Foundation
724 # gives unlimited permission to copy and/or distribute it,
725 # with or without modifications, as long as this notice is preserved.
726
727 # AM_MISSING_PROG(NAME, PROGRAM)
728 # ------------------------------
729 AC_DEFUN([AM_MISSING_PROG],
730 [AC_REQUIRE([AM_MISSING_HAS_RUN])
731 $1=${$1-"${am_missing_run}$2"}
732 AC_SUBST($1)])
733
734 # AM_MISSING_HAS_RUN
735 # ------------------
736 # Define MISSING if not defined so far and test if it is modern enough.
737 # If it is, set am_missing_run to use it, otherwise, to nothing.
738 AC_DEFUN([AM_MISSING_HAS_RUN],
739 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
740 AC_REQUIRE_AUX_FILE([missing])dnl
741 if test x"${MISSING+set}" != xset; then
742 MISSING="\${SHELL} '$am_aux_dir/missing'"
743 fi
744 # Use eval to expand $SHELL
745 if eval "$MISSING --is-lightweight"; then
746 am_missing_run="$MISSING "
747 else
748 am_missing_run=
749 AC_MSG_WARN(['missing' script is too old or missing])
750 fi
751 ])
752
753 # Helper functions for option handling. -*- Autoconf -*-
754
755 # Copyright (C) 2001-2020 Free Software Foundation, Inc.
756 #
757 # This file is free software; the Free Software Foundation
758 # gives unlimited permission to copy and/or distribute it,
759 # with or without modifications, as long as this notice is preserved.
760
761 # _AM_MANGLE_OPTION(NAME)
762 # -----------------------
763 AC_DEFUN([_AM_MANGLE_OPTION],
764 [[_AM_OPTION_]m4_bpatsubst($1, [[^a-zA-Z0-9_]], [_])])
765
766 # _AM_SET_OPTION(NAME)
767 # --------------------
768 # Set option NAME. Presently that only means defining a flag for this option.
769 AC_DEFUN([_AM_SET_OPTION],
770 [m4_define(_AM_MANGLE_OPTION([$1]), [1])])
771
772 # _AM_SET_OPTIONS(OPTIONS)
773 # ------------------------
774 # OPTIONS is a space-separated list of Automake options.
775 AC_DEFUN([_AM_SET_OPTIONS],
776 [m4_foreach_w([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])])
777
778 # _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET])
779 # -------------------------------------------
780 # Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
781 AC_DEFUN([_AM_IF_OPTION],
782 [m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])
783
784 # Copyright (C) 1999-2020 Free Software Foundation, Inc.
785 #
786 # This file is free software; the Free Software Foundation
787 # gives unlimited permission to copy and/or distribute it,
788 # with or without modifications, as long as this notice is preserved.
789
790 # _AM_PROG_CC_C_O
791 # ---------------
792 # Like AC_PROG_CC_C_O, but changed for automake. We rewrite AC_PROG_CC
793 # to automatically call this.
794 AC_DEFUN([_AM_PROG_CC_C_O],
795 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
796 AC_REQUIRE_AUX_FILE([compile])dnl
797 AC_LANG_PUSH([C])dnl
798 AC_CACHE_CHECK(
799 [whether $CC understands -c and -o together],
800 [am_cv_prog_cc_c_o],
801 [AC_LANG_CONFTEST([AC_LANG_PROGRAM([])])
802 # Make sure it works both with $CC and with simple cc.
803 # Following AC_PROG_CC_C_O, we do the test twice because some
804 # compilers refuse to overwrite an existing .o file with -o,
805 # though they will create one.
806 am_cv_prog_cc_c_o=yes
807 for am_i in 1 2; do
808 if AM_RUN_LOG([$CC -c conftest.$ac_ext -o conftest2.$ac_objext]) \
809 && test -f conftest2.$ac_objext; then
810 : OK
811 else
812 am_cv_prog_cc_c_o=no
813 break
814 fi
815 done
816 rm -f core conftest*
817 unset am_i])
818 if test "$am_cv_prog_cc_c_o" != yes; then
819 # Losing compiler, so override with the script.
820 # FIXME: It is wrong to rewrite CC.
821 # But if we don't then we get into trouble of one sort or another.
822 # A longer-term fix would be to have automake use am__CC in this case,
823 # and then we could set am__CC="\$(top_srcdir)/compile \$(CC)"
824 CC="$am_aux_dir/compile $CC"
825 fi
826 AC_LANG_POP([C])])
827
828 # For backward compatibility.
829 AC_DEFUN_ONCE([AM_PROG_CC_C_O], [AC_REQUIRE([AC_PROG_CC])])
830
831 # Copyright (C) 2001-2020 Free Software Foundation, Inc.
832 #
833 # This file is free software; the Free Software Foundation
834 # gives unlimited permission to copy and/or distribute it,
835 # with or without modifications, as long as this notice is preserved.
836
837 # AM_RUN_LOG(COMMAND)
838 # -------------------
839 # Run COMMAND, save the exit status in ac_status, and log it.
840 # (This has been adapted from Autoconf's _AC_RUN_LOG macro.)
841 AC_DEFUN([AM_RUN_LOG],
842 [{ echo "$as_me:$LINENO: $1" >&AS_MESSAGE_LOG_FD
843 ($1) >&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD
844 ac_status=$?
845 echo "$as_me:$LINENO: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
846 (exit $ac_status); }])
847
848 # Check to make sure that the build environment is sane. -*- Autoconf -*-
849
850 # Copyright (C) 1996-2020 Free Software Foundation, Inc.
851 #
852 # This file is free software; the Free Software Foundation
853 # gives unlimited permission to copy and/or distribute it,
854 # with or without modifications, as long as this notice is preserved.
855
856 # AM_SANITY_CHECK
857 # ---------------
858 AC_DEFUN([AM_SANITY_CHECK],
859 [AC_MSG_CHECKING([whether build environment is sane])
860 # Reject unsafe characters in $srcdir or the absolute working directory
861 # name. Accept space and tab only in the latter.
862 am_lf='
863 '
864 case `pwd` in
865 *[[\\\"\#\$\&\'\`$am_lf]]*)
866 AC_MSG_ERROR([unsafe absolute working directory name]);;
867 esac
868 case $srcdir in
869 *[[\\\"\#\$\&\'\`$am_lf\ \ ]]*)
870 AC_MSG_ERROR([unsafe srcdir value: '$srcdir']);;
871 esac
872
873 # Do 'set' in a subshell so we don't clobber the current shell's
874 # arguments. Must try -L first in case configure is actually a
875 # symlink; some systems play weird games with the mod time of symlinks
876 # (eg FreeBSD returns the mod time of the symlink's containing
877 # directory).
878 if (
879 am_has_slept=no
880 for am_try in 1 2; do
881 echo "timestamp, slept: $am_has_slept" > conftest.file
882 set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
883 if test "$[*]" = "X"; then
884 # -L didn't work.
885 set X `ls -t "$srcdir/configure" conftest.file`
886 fi
887 if test "$[*]" != "X $srcdir/configure conftest.file" \
888 && test "$[*]" != "X conftest.file $srcdir/configure"; then
889
890 # If neither matched, then we have a broken ls. This can happen
891 # if, for instance, CONFIG_SHELL is bash and it inherits a
892 # broken ls alias from the environment. This has actually
893 # happened. Such a system could not be considered "sane".
894 AC_MSG_ERROR([ls -t appears to fail. Make sure there is not a broken
895 alias in your environment])
896 fi
897 if test "$[2]" = conftest.file || test $am_try -eq 2; then
898 break
899 fi
900 # Just in case.
901 sleep 1
902 am_has_slept=yes
903 done
904 test "$[2]" = conftest.file
905 )
906 then
907 # Ok.
908 :
909 else
910 AC_MSG_ERROR([newly created file is older than distributed files!
911 Check your system clock])
912 fi
913 AC_MSG_RESULT([yes])
914 # If we didn't sleep, we still need to ensure time stamps of config.status and
915 # generated files are strictly newer.
916 am_sleep_pid=
917 if grep 'slept: no' conftest.file >/dev/null 2>&1; then
918 ( sleep 1 ) &
919 am_sleep_pid=$!
920 fi
921 AC_CONFIG_COMMANDS_PRE(
922 [AC_MSG_CHECKING([that generated files are newer than configure])
923 if test -n "$am_sleep_pid"; then
924 # Hide warnings about reused PIDs.
925 wait $am_sleep_pid 2>/dev/null
926 fi
927 AC_MSG_RESULT([done])])
928 rm -f conftest.file
929 ])
930
931 # Copyright (C) 2009-2020 Free Software Foundation, Inc.
932 #
933 # This file is free software; the Free Software Foundation
934 # gives unlimited permission to copy and/or distribute it,
935 # with or without modifications, as long as this notice is preserved.
936
937 # AM_SILENT_RULES([DEFAULT])
938 # --------------------------
939 # Enable less verbose build rules; with the default set to DEFAULT
940 # ("yes" being less verbose, "no" or empty being verbose).
941 AC_DEFUN([AM_SILENT_RULES],
942 [AC_ARG_ENABLE([silent-rules], [dnl
943 AS_HELP_STRING(
944 [--enable-silent-rules],
945 [less verbose build output (undo: "make V=1")])
946 AS_HELP_STRING(
947 [--disable-silent-rules],
948 [verbose build output (undo: "make V=0")])dnl
949 ])
950 case $enable_silent_rules in @%:@ (((
951 yes) AM_DEFAULT_VERBOSITY=0;;
952 no) AM_DEFAULT_VERBOSITY=1;;
953 *) AM_DEFAULT_VERBOSITY=m4_if([$1], [yes], [0], [1]);;
954 esac
955 dnl
956 dnl A few 'make' implementations (e.g., NonStop OS and NextStep)
957 dnl do not support nested variable expansions.
958 dnl See automake bug#9928 and bug#10237.
959 am_make=${MAKE-make}
960 AC_CACHE_CHECK([whether $am_make supports nested variables],
961 [am_cv_make_support_nested_variables],
962 [if AS_ECHO([['TRUE=$(BAR$(V))
963 BAR0=false
964 BAR1=true
965 V=1
966 am__doit:
967 @$(TRUE)
968 .PHONY: am__doit']]) | $am_make -f - >/dev/null 2>&1; then
969 am_cv_make_support_nested_variables=yes
970 else
971 am_cv_make_support_nested_variables=no
972 fi])
973 if test $am_cv_make_support_nested_variables = yes; then
974 dnl Using '$V' instead of '$(V)' breaks IRIX make.
975 AM_V='$(V)'
976 AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
977 else
978 AM_V=$AM_DEFAULT_VERBOSITY
979 AM_DEFAULT_V=$AM_DEFAULT_VERBOSITY
980 fi
981 AC_SUBST([AM_V])dnl
982 AM_SUBST_NOTMAKE([AM_V])dnl
983 AC_SUBST([AM_DEFAULT_V])dnl
984 AM_SUBST_NOTMAKE([AM_DEFAULT_V])dnl
985 AC_SUBST([AM_DEFAULT_VERBOSITY])dnl
986 AM_BACKSLASH='\'
987 AC_SUBST([AM_BACKSLASH])dnl
988 _AM_SUBST_NOTMAKE([AM_BACKSLASH])dnl
989 ])
990
991 # Copyright (C) 2001-2020 Free Software Foundation, Inc.
992 #
993 # This file is free software; the Free Software Foundation
994 # gives unlimited permission to copy and/or distribute it,
995 # with or without modifications, as long as this notice is preserved.
996
997 # AM_PROG_INSTALL_STRIP
998 # ---------------------
999 # One issue with vendor 'install' (even GNU) is that you can't
1000 # specify the program used to strip binaries. This is especially
1001 # annoying in cross-compiling environments, where the build's strip
1002 # is unlikely to handle the host's binaries.
1003 # Fortunately install-sh will honor a STRIPPROG variable, so we
1004 # always use install-sh in "make install-strip", and initialize
1005 # STRIPPROG with the value of the STRIP variable (set by the user).
1006 AC_DEFUN([AM_PROG_INSTALL_STRIP],
1007 [AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
1008 # Installed binaries are usually stripped using 'strip' when the user
1009 # run "make install-strip". However 'strip' might not be the right
1010 # tool to use in cross-compilation environments, therefore Automake
1011 # will honor the 'STRIP' environment variable to overrule this program.
1012 dnl Don't test for $cross_compiling = yes, because it might be 'maybe'.
1013 if test "$cross_compiling" != no; then
1014 AC_CHECK_TOOL([STRIP], [strip], :)
1015 fi
1016 INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
1017 AC_SUBST([INSTALL_STRIP_PROGRAM])])
1018
1019 # Copyright (C) 2006-2020 Free Software Foundation, Inc.
1020 #
1021 # This file is free software; the Free Software Foundation
1022 # gives unlimited permission to copy and/or distribute it,
1023 # with or without modifications, as long as this notice is preserved.
1024
1025 # _AM_SUBST_NOTMAKE(VARIABLE)
1026 # ---------------------------
1027 # Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in.
1028 # This macro is traced by Automake.
1029 AC_DEFUN([_AM_SUBST_NOTMAKE])
1030
1031 # AM_SUBST_NOTMAKE(VARIABLE)
1032 # --------------------------
1033 # Public sister of _AM_SUBST_NOTMAKE.
1034 AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
1035
1036 # Check how to create a tarball. -*- Autoconf -*-
1037
1038 # Copyright (C) 2004-2020 Free Software Foundation, Inc.
1039 #
1040 # This file is free software; the Free Software Foundation
1041 # gives unlimited permission to copy and/or distribute it,
1042 # with or without modifications, as long as this notice is preserved.
1043
1044 # _AM_PROG_TAR(FORMAT)
1045 # --------------------
1046 # Check how to create a tarball in format FORMAT.
1047 # FORMAT should be one of 'v7', 'ustar', or 'pax'.
1048 #
1049 # Substitute a variable $(am__tar) that is a command
1050 # writing to stdout a FORMAT-tarball containing the directory
1051 # $tardir.
1052 # tardir=directory && $(am__tar) > result.tar
1053 #
1054 # Substitute a variable $(am__untar) that extract such
1055 # a tarball read from stdin.
1056 # $(am__untar) < result.tar
1057 #
1058 AC_DEFUN([_AM_PROG_TAR],
1059 [# Always define AMTAR for backward compatibility. Yes, it's still used
1060 # in the wild :-( We should find a proper way to deprecate it ...
1061 AC_SUBST([AMTAR], ['$${TAR-tar}'])
1062
1063 # We'll loop over all known methods to create a tar archive until one works.
1064 _am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
1065
1066 m4_if([$1], [v7],
1067 [am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'],
1068
1069 [m4_case([$1],
1070 [ustar],
1071 [# The POSIX 1988 'ustar' format is defined with fixed-size fields.
1072 # There is notably a 21 bits limit for the UID and the GID. In fact,
1073 # the 'pax' utility can hang on bigger UID/GID (see automake bug#8343
1074 # and bug#13588).
1075 am_max_uid=2097151 # 2^21 - 1
1076 am_max_gid=$am_max_uid
1077 # The $UID and $GID variables are not portable, so we need to resort
1078 # to the POSIX-mandated id(1) utility. Errors in the 'id' calls
1079 # below are definitely unexpected, so allow the users to see them
1080 # (that is, avoid stderr redirection).
1081 am_uid=`id -u || echo unknown`
1082 am_gid=`id -g || echo unknown`
1083 AC_MSG_CHECKING([whether UID '$am_uid' is supported by ustar format])
1084 if test $am_uid -le $am_max_uid; then
1085 AC_MSG_RESULT([yes])
1086 else
1087 AC_MSG_RESULT([no])
1088 _am_tools=none
1089 fi
1090 AC_MSG_CHECKING([whether GID '$am_gid' is supported by ustar format])
1091 if test $am_gid -le $am_max_gid; then
1092 AC_MSG_RESULT([yes])
1093 else
1094 AC_MSG_RESULT([no])
1095 _am_tools=none
1096 fi],
1097
1098 [pax],
1099 [],
1100
1101 [m4_fatal([Unknown tar format])])
1102
1103 AC_MSG_CHECKING([how to create a $1 tar archive])
1104
1105 # Go ahead even if we have the value already cached. We do so because we
1106 # need to set the values for the 'am__tar' and 'am__untar' variables.
1107 _am_tools=${am_cv_prog_tar_$1-$_am_tools}
1108
1109 for _am_tool in $_am_tools; do
1110 case $_am_tool in
1111 gnutar)
1112 for _am_tar in tar gnutar gtar; do
1113 AM_RUN_LOG([$_am_tar --version]) && break
1114 done
1115 am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"'
1116 am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"'
1117 am__untar="$_am_tar -xf -"
1118 ;;
1119 plaintar)
1120 # Must skip GNU tar: if it does not support --format= it doesn't create
1121 # ustar tarball either.
1122 (tar --version) >/dev/null 2>&1 && continue
1123 am__tar='tar chf - "$$tardir"'
1124 am__tar_='tar chf - "$tardir"'
1125 am__untar='tar xf -'
1126 ;;
1127 pax)
1128 am__tar='pax -L -x $1 -w "$$tardir"'
1129 am__tar_='pax -L -x $1 -w "$tardir"'
1130 am__untar='pax -r'
1131 ;;
1132 cpio)
1133 am__tar='find "$$tardir" -print | cpio -o -H $1 -L'
1134 am__tar_='find "$tardir" -print | cpio -o -H $1 -L'
1135 am__untar='cpio -i -H $1 -d'
1136 ;;
1137 none)
1138 am__tar=false
1139 am__tar_=false
1140 am__untar=false
1141 ;;
1142 esac
1143
1144 # If the value was cached, stop now. We just wanted to have am__tar
1145 # and am__untar set.
1146 test -n "${am_cv_prog_tar_$1}" && break
1147
1148 # tar/untar a dummy directory, and stop if the command works.
1149 rm -rf conftest.dir
1150 mkdir conftest.dir
1151 echo GrepMe > conftest.dir/file
1152 AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar])
1153 rm -rf conftest.dir
1154 if test -s conftest.tar; then
1155 AM_RUN_LOG([$am__untar <conftest.tar])
1156 AM_RUN_LOG([cat conftest.dir/file])
1157 grep GrepMe conftest.dir/file >/dev/null 2>&1 && break
1158 fi
1159 done
1160 rm -rf conftest.dir
1161
1162 AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])
1163 AC_MSG_RESULT([$am_cv_prog_tar_$1])])
1164
1165 AC_SUBST([am__tar])
1166 AC_SUBST([am__untar])
1167 ]) # _AM_PROG_TAR
1168
1169 m4_include([m4/ao.m4])
1170 m4_include([m4/libtool.m4])
1171 m4_include([m4/ltoptions.m4])
1172 m4_include([m4/ltsugar.m4])
1173 m4_include([m4/ltversion.m4])
1174 m4_include([m4/lt~obsolete.m4])