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1 # generated automatically by aclocal 1.16.4 -*- Autoconf -*-
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3 # Copyright (C) 1996-2021 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.
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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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531 AC_SUBST([CSCOPE])
532
533 AC_REQUIRE([AM_SILENT_RULES])dnl
534 dnl The testsuite driver may need to know about EXEEXT, so add the
535 dnl 'am__EXEEXT' conditional if _AM_COMPILER_EXEEXT was seen. This
536 dnl macro is hooked onto _AC_COMPILER_EXEEXT early, see below.
537 AC_CONFIG_COMMANDS_PRE(dnl
538 [m4_provide_if([_AM_COMPILER_EXEEXT],
539 [AM_CONDITIONAL([am__EXEEXT], [test -n "$EXEEXT"])])])dnl
540
541 # POSIX will say in a future version that running "rm -f" with no argument
542 # is OK; and we want to be able to make that assumption in our Makefile
543 # recipes. So use an aggressive probe to check that the usage we want is
544 # actually supported "in the wild" to an acceptable degree.
545 # See automake bug#10828.
546 # To make any issue more visible, cause the running configure to be aborted
547 # by default if the 'rm' program in use doesn't match our expectations; the
548 # user can still override this though.
549 if rm -f && rm -fr && rm -rf; then : OK; else
550 cat >&2 <<'END'
551 Oops!
552
553 Your 'rm' program seems unable to run without file operands specified
554 on the command line, even when the '-f' option is present. This is contrary
555 to the behaviour of most rm programs out there, and not conforming with
556 the upcoming POSIX standard: <http://austingroupbugs.net/view.php?id=542>
557
558 Please tell bug-automake@gnu.org about your system, including the value
559 of your $PATH and any error possibly output before this message. This
560 can help us improve future automake versions.
561
562 END
563 if test x"$ACCEPT_INFERIOR_RM_PROGRAM" = x"yes"; then
564 echo 'Configuration will proceed anyway, since you have set the' >&2
565 echo 'ACCEPT_INFERIOR_RM_PROGRAM variable to "yes"' >&2
566 echo >&2
567 else
568 cat >&2 <<'END'
569 Aborting the configuration process, to ensure you take notice of the issue.
570
571 You can download and install GNU coreutils to get an 'rm' implementation
572 that behaves properly: <https://www.gnu.org/software/coreutils/>.
573
574 If you want to complete the configuration process using your problematic
575 'rm' anyway, export the environment variable ACCEPT_INFERIOR_RM_PROGRAM
576 to "yes", and re-run configure.
577
578 END
579 AC_MSG_ERROR([Your 'rm' program is bad, sorry.])
580 fi
581 fi
582 dnl The trailing newline in this macro's definition is deliberate, for
583 dnl backward compatibility and to allow trailing 'dnl'-style comments
584 dnl after the AM_INIT_AUTOMAKE invocation. See automake bug#16841.
585 ])
586
587 dnl Hook into '_AC_COMPILER_EXEEXT' early to learn its expansion. Do not
588 dnl add the conditional right here, as _AC_COMPILER_EXEEXT may be further
589 dnl mangled by Autoconf and run in a shell conditional statement.
590 m4_define([_AC_COMPILER_EXEEXT],
591 m4_defn([_AC_COMPILER_EXEEXT])[m4_provide([_AM_COMPILER_EXEEXT])])
592
593 # When config.status generates a header, we must update the stamp-h file.
594 # This file resides in the same directory as the config header
595 # that is generated. The stamp files are numbered to have different names.
596
597 # Autoconf calls _AC_AM_CONFIG_HEADER_HOOK (when defined) in the
598 # loop where config.status creates the headers, so we can generate
599 # our stamp files there.
600 AC_DEFUN([_AC_AM_CONFIG_HEADER_HOOK],
601 [# Compute $1's index in $config_headers.
602 _am_arg=$1
603 _am_stamp_count=1
604 for _am_header in $config_headers :; do
605 case $_am_header in
606 $_am_arg | $_am_arg:* )
607 break ;;
608 * )
609 _am_stamp_count=`expr $_am_stamp_count + 1` ;;
610 esac
611 done
612 echo "timestamp for $_am_arg" >`AS_DIRNAME(["$_am_arg"])`/stamp-h[]$_am_stamp_count])
613
614 # Copyright (C) 2001-2021 Free Software Foundation, Inc.
615 #
616 # This file is free software; the Free Software Foundation
617 # gives unlimited permission to copy and/or distribute it,
618 # with or without modifications, as long as this notice is preserved.
619
620 # AM_PROG_INSTALL_SH
621 # ------------------
622 # Define $install_sh.
623 AC_DEFUN([AM_PROG_INSTALL_SH],
624 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
625 if test x"${install_sh+set}" != xset; then
626 case $am_aux_dir in
627 *\ * | *\ *)
628 install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
629 *)
630 install_sh="\${SHELL} $am_aux_dir/install-sh"
631 esac
632 fi
633 AC_SUBST([install_sh])])
634
635 # Copyright (C) 2003-2021 Free Software Foundation, Inc.
636 #
637 # This file is free software; the Free Software Foundation
638 # gives unlimited permission to copy and/or distribute it,
639 # with or without modifications, as long as this notice is preserved.
640
641 # Check whether the underlying file-system supports filenames
642 # with a leading dot. For instance MS-DOS doesn't.
643 AC_DEFUN([AM_SET_LEADING_DOT],
644 [rm -rf .tst 2>/dev/null
645 mkdir .tst 2>/dev/null
646 if test -d .tst; then
647 am__leading_dot=.
648 else
649 am__leading_dot=_
650 fi
651 rmdir .tst 2>/dev/null
652 AC_SUBST([am__leading_dot])])
653
654 # Check to see how 'make' treats includes. -*- Autoconf -*-
655
656 # Copyright (C) 2001-2021 Free Software Foundation, Inc.
657 #
658 # This file is free software; the Free Software Foundation
659 # gives unlimited permission to copy and/or distribute it,
660 # with or without modifications, as long as this notice is preserved.
661
662 # AM_MAKE_INCLUDE()
663 # -----------------
664 # Check whether make has an 'include' directive that can support all
665 # the idioms we need for our automatic dependency tracking code.
666 AC_DEFUN([AM_MAKE_INCLUDE],
667 [AC_MSG_CHECKING([whether ${MAKE-make} supports the include directive])
668 cat > confinc.mk << 'END'
669 am__doit:
670 @echo this is the am__doit target >confinc.out
671 .PHONY: am__doit
672 END
673 am__include="#"
674 am__quote=
675 # BSD make does it like this.
676 echo '.include "confinc.mk" # ignored' > confmf.BSD
677 # Other make implementations (GNU, Solaris 10, AIX) do it like this.
678 echo 'include confinc.mk # ignored' > confmf.GNU
679 _am_result=no
680 for s in GNU BSD; do
681 AM_RUN_LOG([${MAKE-make} -f confmf.$s && cat confinc.out])
682 AS_CASE([$?:`cat confinc.out 2>/dev/null`],
683 ['0:this is the am__doit target'],
684 [AS_CASE([$s],
685 [BSD], [am__include='.include' am__quote='"'],
686 [am__include='include' am__quote=''])])
687 if test "$am__include" != "#"; then
688 _am_result="yes ($s style)"
689 break
690 fi
691 done
692 rm -f confinc.* confmf.*
693 AC_MSG_RESULT([${_am_result}])
694 AC_SUBST([am__include])])
695 AC_SUBST([am__quote])])
696
697 # Fake the existence of programs that GNU maintainers use. -*- Autoconf -*-
698
699 # Copyright (C) 1997-2021 Free Software Foundation, Inc.
700 #
701 # This file is free software; the Free Software Foundation
702 # gives unlimited permission to copy and/or distribute it,
703 # with or without modifications, as long as this notice is preserved.
704
705 # AM_MISSING_PROG(NAME, PROGRAM)
706 # ------------------------------
707 AC_DEFUN([AM_MISSING_PROG],
708 [AC_REQUIRE([AM_MISSING_HAS_RUN])
709 $1=${$1-"${am_missing_run}$2"}
710 AC_SUBST($1)])
711
712 # AM_MISSING_HAS_RUN
713 # ------------------
714 # Define MISSING if not defined so far and test if it is modern enough.
715 # If it is, set am_missing_run to use it, otherwise, to nothing.
716 AC_DEFUN([AM_MISSING_HAS_RUN],
717 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
718 AC_REQUIRE_AUX_FILE([missing])dnl
719 if test x"${MISSING+set}" != xset; then
720 MISSING="\${SHELL} '$am_aux_dir/missing'"
721 fi
722 # Use eval to expand $SHELL
723 if eval "$MISSING --is-lightweight"; then
724 am_missing_run="$MISSING "
725 else
726 am_missing_run=
727 AC_MSG_WARN(['missing' script is too old or missing])
728 fi
729 ])
730
731 # -*- Autoconf -*-
732 # Obsolete and "removed" macros, that must however still report explicit
733 # error messages when used, to smooth transition.
734 #
735 # Copyright (C) 1996-2021 Free Software Foundation, Inc.
736 #
737 # This file is free software; the Free Software Foundation
738 # gives unlimited permission to copy and/or distribute it,
739 # with or without modifications, as long as this notice is preserved.
740
741 AC_DEFUN([AM_CONFIG_HEADER],
742 [AC_DIAGNOSE([obsolete],
743 ['$0': this macro is obsolete.
744 You should use the 'AC][_CONFIG_HEADERS' macro instead.])dnl
745 AC_CONFIG_HEADERS($@)])
746
747 AC_DEFUN([AM_PROG_CC_STDC],
748 [AC_PROG_CC
749 am_cv_prog_cc_stdc=$ac_cv_prog_cc_stdc
750 AC_DIAGNOSE([obsolete],
751 ['$0': this macro is obsolete.
752 You should simply use the 'AC][_PROG_CC' macro instead.
753 Also, your code should no longer depend upon 'am_cv_prog_cc_stdc',
754 but upon 'ac_cv_prog_cc_stdc'.])])
755
756 AC_DEFUN([AM_C_PROTOTYPES],
757 [AC_FATAL([automatic de-ANSI-fication support has been removed])])
758 AU_DEFUN([fp_C_PROTOTYPES], [AM_C_PROTOTYPES])
759
760 # Helper functions for option handling. -*- Autoconf -*-
761
762 # Copyright (C) 2001-2021 Free Software Foundation, Inc.
763 #
764 # This file is free software; the Free Software Foundation
765 # gives unlimited permission to copy and/or distribute it,
766 # with or without modifications, as long as this notice is preserved.
767
768 # _AM_MANGLE_OPTION(NAME)
769 # -----------------------
770 AC_DEFUN([_AM_MANGLE_OPTION],
771 [[_AM_OPTION_]m4_bpatsubst($1, [[^a-zA-Z0-9_]], [_])])
772
773 # _AM_SET_OPTION(NAME)
774 # --------------------
775 # Set option NAME. Presently that only means defining a flag for this option.
776 AC_DEFUN([_AM_SET_OPTION],
777 [m4_define(_AM_MANGLE_OPTION([$1]), [1])])
778
779 # _AM_SET_OPTIONS(OPTIONS)
780 # ------------------------
781 # OPTIONS is a space-separated list of Automake options.
782 AC_DEFUN([_AM_SET_OPTIONS],
783 [m4_foreach_w([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])])
784
785 # _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET])
786 # -------------------------------------------
787 # Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
788 AC_DEFUN([_AM_IF_OPTION],
789 [m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])
790
791 # Copyright (C) 1999-2021 Free Software Foundation, Inc.
792 #
793 # This file is free software; the Free Software Foundation
794 # gives unlimited permission to copy and/or distribute it,
795 # with or without modifications, as long as this notice is preserved.
796
797 # _AM_PROG_CC_C_O
798 # ---------------
799 # Like AC_PROG_CC_C_O, but changed for automake. We rewrite AC_PROG_CC
800 # to automatically call this.
801 AC_DEFUN([_AM_PROG_CC_C_O],
802 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
803 AC_REQUIRE_AUX_FILE([compile])dnl
804 AC_LANG_PUSH([C])dnl
805 AC_CACHE_CHECK(
806 [whether $CC understands -c and -o together],
807 [am_cv_prog_cc_c_o],
808 [AC_LANG_CONFTEST([AC_LANG_PROGRAM([])])
809 # Make sure it works both with $CC and with simple cc.
810 # Following AC_PROG_CC_C_O, we do the test twice because some
811 # compilers refuse to overwrite an existing .o file with -o,
812 # though they will create one.
813 am_cv_prog_cc_c_o=yes
814 for am_i in 1 2; do
815 if AM_RUN_LOG([$CC -c conftest.$ac_ext -o conftest2.$ac_objext]) \
816 && test -f conftest2.$ac_objext; then
817 : OK
818 else
819 am_cv_prog_cc_c_o=no
820 break
821 fi
822 done
823 rm -f core conftest*
824 unset am_i])
825 if test "$am_cv_prog_cc_c_o" != yes; then
826 # Losing compiler, so override with the script.
827 # FIXME: It is wrong to rewrite CC.
828 # But if we don't then we get into trouble of one sort or another.
829 # A longer-term fix would be to have automake use am__CC in this case,
830 # and then we could set am__CC="\$(top_srcdir)/compile \$(CC)"
831 CC="$am_aux_dir/compile $CC"
832 fi
833 AC_LANG_POP([C])])
834
835 # For backward compatibility.
836 AC_DEFUN_ONCE([AM_PROG_CC_C_O], [AC_REQUIRE([AC_PROG_CC])])
837
838 # Copyright (C) 2001-2021 Free Software Foundation, Inc.
839 #
840 # This file is free software; the Free Software Foundation
841 # gives unlimited permission to copy and/or distribute it,
842 # with or without modifications, as long as this notice is preserved.
843
844 # AM_RUN_LOG(COMMAND)
845 # -------------------
846 # Run COMMAND, save the exit status in ac_status, and log it.
847 # (This has been adapted from Autoconf's _AC_RUN_LOG macro.)
848 AC_DEFUN([AM_RUN_LOG],
849 [{ echo "$as_me:$LINENO: $1" >&AS_MESSAGE_LOG_FD
850 ($1) >&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD
851 ac_status=$?
852 echo "$as_me:$LINENO: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
853 (exit $ac_status); }])
854
855 # Check to make sure that the build environment is sane. -*- Autoconf -*-
856
857 # Copyright (C) 1996-2021 Free Software Foundation, Inc.
858 #
859 # This file is free software; the Free Software Foundation
860 # gives unlimited permission to copy and/or distribute it,
861 # with or without modifications, as long as this notice is preserved.
862
863 # AM_SANITY_CHECK
864 # ---------------
865 AC_DEFUN([AM_SANITY_CHECK],
866 [AC_MSG_CHECKING([whether build environment is sane])
867 # Reject unsafe characters in $srcdir or the absolute working directory
868 # name. Accept space and tab only in the latter.
869 am_lf='
870 '
871 case `pwd` in
872 *[[\\\"\#\$\&\'\`$am_lf]]*)
873 AC_MSG_ERROR([unsafe absolute working directory name]);;
874 esac
875 case $srcdir in
876 *[[\\\"\#\$\&\'\`$am_lf\ \ ]]*)
877 AC_MSG_ERROR([unsafe srcdir value: '$srcdir']);;
878 esac
879
880 # Do 'set' in a subshell so we don't clobber the current shell's
881 # arguments. Must try -L first in case configure is actually a
882 # symlink; some systems play weird games with the mod time of symlinks
883 # (eg FreeBSD returns the mod time of the symlink's containing
884 # directory).
885 if (
886 am_has_slept=no
887 for am_try in 1 2; do
888 echo "timestamp, slept: $am_has_slept" > conftest.file
889 set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
890 if test "$[*]" = "X"; then
891 # -L didn't work.
892 set X `ls -t "$srcdir/configure" conftest.file`
893 fi
894 if test "$[*]" != "X $srcdir/configure conftest.file" \
895 && test "$[*]" != "X conftest.file $srcdir/configure"; then
896
897 # If neither matched, then we have a broken ls. This can happen
898 # if, for instance, CONFIG_SHELL is bash and it inherits a
899 # broken ls alias from the environment. This has actually
900 # happened. Such a system could not be considered "sane".
901 AC_MSG_ERROR([ls -t appears to fail. Make sure there is not a broken
902 alias in your environment])
903 fi
904 if test "$[2]" = conftest.file || test $am_try -eq 2; then
905 break
906 fi
907 # Just in case.
908 sleep 1
909 am_has_slept=yes
910 done
911 test "$[2]" = conftest.file
912 )
913 then
914 # Ok.
915 :
916 else
917 AC_MSG_ERROR([newly created file is older than distributed files!
918 Check your system clock])
919 fi
920 AC_MSG_RESULT([yes])
921 # If we didn't sleep, we still need to ensure time stamps of config.status and
922 # generated files are strictly newer.
923 am_sleep_pid=
924 if grep 'slept: no' conftest.file >/dev/null 2>&1; then
925 ( sleep 1 ) &
926 am_sleep_pid=$!
927 fi
928 AC_CONFIG_COMMANDS_PRE(
929 [AC_MSG_CHECKING([that generated files are newer than configure])
930 if test -n "$am_sleep_pid"; then
931 # Hide warnings about reused PIDs.
932 wait $am_sleep_pid 2>/dev/null
933 fi
934 AC_MSG_RESULT([done])])
935 rm -f conftest.file
936 ])
937
938 # Copyright (C) 2009-2021 Free Software Foundation, Inc.
939 #
940 # This file is free software; the Free Software Foundation
941 # gives unlimited permission to copy and/or distribute it,
942 # with or without modifications, as long as this notice is preserved.
943
944 # AM_SILENT_RULES([DEFAULT])
945 # --------------------------
946 # Enable less verbose build rules; with the default set to DEFAULT
947 # ("yes" being less verbose, "no" or empty being verbose).
948 AC_DEFUN([AM_SILENT_RULES],
949 [AC_ARG_ENABLE([silent-rules], [dnl
950 AS_HELP_STRING(
951 [--enable-silent-rules],
952 [less verbose build output (undo: "make V=1")])
953 AS_HELP_STRING(
954 [--disable-silent-rules],
955 [verbose build output (undo: "make V=0")])dnl
956 ])
957 case $enable_silent_rules in @%:@ (((
958 yes) AM_DEFAULT_VERBOSITY=0;;
959 no) AM_DEFAULT_VERBOSITY=1;;
960 *) AM_DEFAULT_VERBOSITY=m4_if([$1], [yes], [0], [1]);;
961 esac
962 dnl
963 dnl A few 'make' implementations (e.g., NonStop OS and NextStep)
964 dnl do not support nested variable expansions.
965 dnl See automake bug#9928 and bug#10237.
966 am_make=${MAKE-make}
967 AC_CACHE_CHECK([whether $am_make supports nested variables],
968 [am_cv_make_support_nested_variables],
969 [if AS_ECHO([['TRUE=$(BAR$(V))
970 BAR0=false
971 BAR1=true
972 V=1
973 am__doit:
974 @$(TRUE)
975 .PHONY: am__doit']]) | $am_make -f - >/dev/null 2>&1; then
976 am_cv_make_support_nested_variables=yes
977 else
978 am_cv_make_support_nested_variables=no
979 fi])
980 if test $am_cv_make_support_nested_variables = yes; then
981 dnl Using '$V' instead of '$(V)' breaks IRIX make.
982 AM_V='$(V)'
983 AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
984 else
985 AM_V=$AM_DEFAULT_VERBOSITY
986 AM_DEFAULT_V=$AM_DEFAULT_VERBOSITY
987 fi
988 AC_SUBST([AM_V])dnl
989 AM_SUBST_NOTMAKE([AM_V])dnl
990 AC_SUBST([AM_DEFAULT_V])dnl
991 AM_SUBST_NOTMAKE([AM_DEFAULT_V])dnl
992 AC_SUBST([AM_DEFAULT_VERBOSITY])dnl
993 AM_BACKSLASH='\'
994 AC_SUBST([AM_BACKSLASH])dnl
995 _AM_SUBST_NOTMAKE([AM_BACKSLASH])dnl
996 ])
997
998 # Copyright (C) 2001-2021 Free Software Foundation, Inc.
999 #
1000 # This file is free software; the Free Software Foundation
1001 # gives unlimited permission to copy and/or distribute it,
1002 # with or without modifications, as long as this notice is preserved.
1003
1004 # AM_PROG_INSTALL_STRIP
1005 # ---------------------
1006 # One issue with vendor 'install' (even GNU) is that you can't
1007 # specify the program used to strip binaries. This is especially
1008 # annoying in cross-compiling environments, where the build's strip
1009 # is unlikely to handle the host's binaries.
1010 # Fortunately install-sh will honor a STRIPPROG variable, so we
1011 # always use install-sh in "make install-strip", and initialize
1012 # STRIPPROG with the value of the STRIP variable (set by the user).
1013 AC_DEFUN([AM_PROG_INSTALL_STRIP],
1014 [AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
1015 # Installed binaries are usually stripped using 'strip' when the user
1016 # run "make install-strip". However 'strip' might not be the right
1017 # tool to use in cross-compilation environments, therefore Automake
1018 # will honor the 'STRIP' environment variable to overrule this program.
1019 dnl Don't test for $cross_compiling = yes, because it might be 'maybe'.
1020 if test "$cross_compiling" != no; then
1021 AC_CHECK_TOOL([STRIP], [strip], :)
1022 fi
1023 INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
1024 AC_SUBST([INSTALL_STRIP_PROGRAM])])
1025
1026 # Copyright (C) 2006-2021 Free Software Foundation, Inc.
1027 #
1028 # This file is free software; the Free Software Foundation
1029 # gives unlimited permission to copy and/or distribute it,
1030 # with or without modifications, as long as this notice is preserved.
1031
1032 # _AM_SUBST_NOTMAKE(VARIABLE)
1033 # ---------------------------
1034 # Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in.
1035 # This macro is traced by Automake.
1036 AC_DEFUN([_AM_SUBST_NOTMAKE])
1037
1038 # AM_SUBST_NOTMAKE(VARIABLE)
1039 # --------------------------
1040 # Public sister of _AM_SUBST_NOTMAKE.
1041 AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
1042
1043 # Check how to create a tarball. -*- Autoconf -*-
1044
1045 # Copyright (C) 2004-2021 Free Software Foundation, Inc.
1046 #
1047 # This file is free software; the Free Software Foundation
1048 # gives unlimited permission to copy and/or distribute it,
1049 # with or without modifications, as long as this notice is preserved.
1050
1051 # _AM_PROG_TAR(FORMAT)
1052 # --------------------
1053 # Check how to create a tarball in format FORMAT.
1054 # FORMAT should be one of 'v7', 'ustar', or 'pax'.
1055 #
1056 # Substitute a variable $(am__tar) that is a command
1057 # writing to stdout a FORMAT-tarball containing the directory
1058 # $tardir.
1059 # tardir=directory && $(am__tar) > result.tar
1060 #
1061 # Substitute a variable $(am__untar) that extract such
1062 # a tarball read from stdin.
1063 # $(am__untar) < result.tar
1064 #
1065 AC_DEFUN([_AM_PROG_TAR],
1066 [# Always define AMTAR for backward compatibility. Yes, it's still used
1067 # in the wild :-( We should find a proper way to deprecate it ...
1068 AC_SUBST([AMTAR], ['$${TAR-tar}'])
1069
1070 # We'll loop over all known methods to create a tar archive until one works.
1071 _am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
1072
1073 m4_if([$1], [v7],
1074 [am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'],
1075
1076 [m4_case([$1],
1077 [ustar],
1078 [# The POSIX 1988 'ustar' format is defined with fixed-size fields.
1079 # There is notably a 21 bits limit for the UID and the GID. In fact,
1080 # the 'pax' utility can hang on bigger UID/GID (see automake bug#8343
1081 # and bug#13588).
1082 am_max_uid=2097151 # 2^21 - 1
1083 am_max_gid=$am_max_uid
1084 # The $UID and $GID variables are not portable, so we need to resort
1085 # to the POSIX-mandated id(1) utility. Errors in the 'id' calls
1086 # below are definitely unexpected, so allow the users to see them
1087 # (that is, avoid stderr redirection).
1088 am_uid=`id -u || echo unknown`
1089 am_gid=`id -g || echo unknown`
1090 AC_MSG_CHECKING([whether UID '$am_uid' is supported by ustar format])
1091 if test $am_uid -le $am_max_uid; then
1092 AC_MSG_RESULT([yes])
1093 else
1094 AC_MSG_RESULT([no])
1095 _am_tools=none
1096 fi
1097 AC_MSG_CHECKING([whether GID '$am_gid' is supported by ustar format])
1098 if test $am_gid -le $am_max_gid; then
1099 AC_MSG_RESULT([yes])
1100 else
1101 AC_MSG_RESULT([no])
1102 _am_tools=none
1103 fi],
1104
1105 [pax],
1106 [],
1107
1108 [m4_fatal([Unknown tar format])])
1109
1110 AC_MSG_CHECKING([how to create a $1 tar archive])
1111
1112 # Go ahead even if we have the value already cached. We do so because we
1113 # need to set the values for the 'am__tar' and 'am__untar' variables.
1114 _am_tools=${am_cv_prog_tar_$1-$_am_tools}
1115
1116 for _am_tool in $_am_tools; do
1117 case $_am_tool in
1118 gnutar)
1119 for _am_tar in tar gnutar gtar; do
1120 AM_RUN_LOG([$_am_tar --version]) && break
1121 done
1122 am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"'
1123 am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"'
1124 am__untar="$_am_tar -xf -"
1125 ;;
1126 plaintar)
1127 # Must skip GNU tar: if it does not support --format= it doesn't create
1128 # ustar tarball either.
1129 (tar --version) >/dev/null 2>&1 && continue
1130 am__tar='tar chf - "$$tardir"'
1131 am__tar_='tar chf - "$tardir"'
1132 am__untar='tar xf -'
1133 ;;
1134 pax)
1135 am__tar='pax -L -x $1 -w "$$tardir"'
1136 am__tar_='pax -L -x $1 -w "$tardir"'
1137 am__untar='pax -r'
1138 ;;
1139 cpio)
1140 am__tar='find "$$tardir" -print | cpio -o -H $1 -L'
1141 am__tar_='find "$tardir" -print | cpio -o -H $1 -L'
1142 am__untar='cpio -i -H $1 -d'
1143 ;;
1144 none)
1145 am__tar=false
1146 am__tar_=false
1147 am__untar=false
1148 ;;
1149 esac
1150
1151 # If the value was cached, stop now. We just wanted to have am__tar
1152 # and am__untar set.
1153 test -n "${am_cv_prog_tar_$1}" && break
1154
1155 # tar/untar a dummy directory, and stop if the command works.
1156 rm -rf conftest.dir
1157 mkdir conftest.dir
1158 echo GrepMe > conftest.dir/file
1159 AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar])
1160 rm -rf conftest.dir
1161 if test -s conftest.tar; then
1162 AM_RUN_LOG([$am__untar <conftest.tar])
1163 AM_RUN_LOG([cat conftest.dir/file])
1164 grep GrepMe conftest.dir/file >/dev/null 2>&1 && break
1165 fi
1166 done
1167 rm -rf conftest.dir
1168
1169 AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])
1170 AC_MSG_RESULT([$am_cv_prog_tar_$1])])
1171
1172 AC_SUBST([am__tar])
1173 AC_SUBST([am__untar])
1174 ]) # _AM_PROG_TAR
1175