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1 # generated automatically by aclocal 1.16.1 -*- Autoconf -*-
3 # Copyright (C) 1996-2018 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
11 # even the implied warranty of MERCHANTABILITY or FITNESS FOR A
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23 # Copyright (C) 2002-2018 Free Software Foundation, Inc.
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61 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
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164 # Copyright (C) 1999-2018 Free Software Foundation, Inc.
165 #
166 # This file is free software; the Free Software Foundation
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543 [AM_CONDITIONAL([am__EXEEXT], [test -n "$EXEEXT"])])])dnl
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) 2001-2018 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) 2003-2018 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) 1996-2018 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) 2001-2018 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) 1997-2018 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 case $am_aux_dir in
761 *\ * | *\ *)
762 MISSING="\${SHELL} \"$am_aux_dir/missing\"" ;;
763 *)
764 MISSING="\${SHELL} $am_aux_dir/missing" ;;
765 esac
766 fi
767 # Use eval to expand $SHELL
768 if eval "$MISSING --is-lightweight"; then
769 am_missing_run="$MISSING "
770 else
771 am_missing_run=
772 AC_MSG_WARN(['missing' script is too old or missing])
773 fi
774 ])
776 # Helper functions for option handling. -*- Autoconf -*-
778 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
779 #
780 # This file is free software; the Free Software Foundation
781 # gives unlimited permission to copy and/or distribute it,
782 # with or without modifications, as long as this notice is preserved.
784 # _AM_MANGLE_OPTION(NAME)
785 # -----------------------
786 AC_DEFUN([_AM_MANGLE_OPTION],
787 [[_AM_OPTION_]m4_bpatsubst($1, [[^a-zA-Z0-9_]], [_])])
789 # _AM_SET_OPTION(NAME)
790 # --------------------
791 # Set option NAME. Presently that only means defining a flag for this option.
792 AC_DEFUN([_AM_SET_OPTION],
793 [m4_define(_AM_MANGLE_OPTION([$1]), [1])])
795 # _AM_SET_OPTIONS(OPTIONS)
796 # ------------------------
797 # OPTIONS is a space-separated list of Automake options.
798 AC_DEFUN([_AM_SET_OPTIONS],
799 [m4_foreach_w([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])])
801 # _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET])
802 # -------------------------------------------
803 # Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
804 AC_DEFUN([_AM_IF_OPTION],
805 [m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])
807 # Copyright (C) 1999-2018 Free Software Foundation, Inc.
808 #
809 # This file is free software; the Free Software Foundation
810 # gives unlimited permission to copy and/or distribute it,
811 # with or without modifications, as long as this notice is preserved.
813 # _AM_PROG_CC_C_O
814 # ---------------
815 # Like AC_PROG_CC_C_O, but changed for automake. We rewrite AC_PROG_CC
816 # to automatically call this.
817 AC_DEFUN([_AM_PROG_CC_C_O],
818 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
819 AC_REQUIRE_AUX_FILE([compile])dnl
820 AC_LANG_PUSH([C])dnl
821 AC_CACHE_CHECK(
822 [whether $CC understands -c and -o together],
823 [am_cv_prog_cc_c_o],
824 [AC_LANG_CONFTEST([AC_LANG_PROGRAM([])])
825 # Make sure it works both with $CC and with simple cc.
826 # Following AC_PROG_CC_C_O, we do the test twice because some
827 # compilers refuse to overwrite an existing .o file with -o,
828 # though they will create one.
829 am_cv_prog_cc_c_o=yes
830 for am_i in 1 2; do
831 if AM_RUN_LOG([$CC -c conftest.$ac_ext -o conftest2.$ac_objext]) \
832 && test -f conftest2.$ac_objext; then
833 : OK
834 else
835 am_cv_prog_cc_c_o=no
836 break
837 fi
838 done
839 rm -f core conftest*
840 unset am_i])
841 if test "$am_cv_prog_cc_c_o" != yes; then
842 # Losing compiler, so override with the script.
843 # FIXME: It is wrong to rewrite CC.
844 # But if we don't then we get into trouble of one sort or another.
845 # A longer-term fix would be to have automake use am__CC in this case,
846 # and then we could set am__CC="\$(top_srcdir)/compile \$(CC)"
847 CC="$am_aux_dir/compile $CC"
848 fi
849 AC_LANG_POP([C])])
851 # For backward compatibility.
852 AC_DEFUN_ONCE([AM_PROG_CC_C_O], [AC_REQUIRE([AC_PROG_CC])])
854 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
855 #
856 # This file is free software; the Free Software Foundation
857 # gives unlimited permission to copy and/or distribute it,
858 # with or without modifications, as long as this notice is preserved.
860 # AM_RUN_LOG(COMMAND)
861 # -------------------
862 # Run COMMAND, save the exit status in ac_status, and log it.
863 # (This has been adapted from Autoconf's _AC_RUN_LOG macro.)
864 AC_DEFUN([AM_RUN_LOG],
865 [{ echo "$as_me:$LINENO: $1" >&AS_MESSAGE_LOG_FD
866 ($1) >&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD
867 ac_status=$?
868 echo "$as_me:$LINENO: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
869 (exit $ac_status); }])
871 # Check to make sure that the build environment is sane. -*- Autoconf -*-
873 # Copyright (C) 1996-2018 Free Software Foundation, Inc.
874 #
875 # This file is free software; the Free Software Foundation
876 # gives unlimited permission to copy and/or distribute it,
877 # with or without modifications, as long as this notice is preserved.
879 # AM_SANITY_CHECK
880 # ---------------
881 AC_DEFUN([AM_SANITY_CHECK],
882 [AC_MSG_CHECKING([whether build environment is sane])
883 # Reject unsafe characters in $srcdir or the absolute working directory
884 # name. Accept space and tab only in the latter.
885 am_lf='
886 '
887 case `pwd` in
888 *[[\\\"\#\$\&\'\`$am_lf]]*)
889 AC_MSG_ERROR([unsafe absolute working directory name]);;
890 esac
891 case $srcdir in
892 *[[\\\"\#\$\&\'\`$am_lf\ \ ]]*)
893 AC_MSG_ERROR([unsafe srcdir value: '$srcdir']);;
894 esac
896 # Do 'set' in a subshell so we don't clobber the current shell's
897 # arguments. Must try -L first in case configure is actually a
898 # symlink; some systems play weird games with the mod time of symlinks
899 # (eg FreeBSD returns the mod time of the symlink's containing
900 # directory).
901 if (
902 am_has_slept=no
903 for am_try in 1 2; do
904 echo "timestamp, slept: $am_has_slept" > conftest.file
905 set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
906 if test "$[*]" = "X"; then
907 # -L didn't work.
908 set X `ls -t "$srcdir/configure" conftest.file`
909 fi
910 if test "$[*]" != "X $srcdir/configure conftest.file" \
911 && test "$[*]" != "X conftest.file $srcdir/configure"; then
913 # If neither matched, then we have a broken ls. This can happen
914 # if, for instance, CONFIG_SHELL is bash and it inherits a
915 # broken ls alias from the environment. This has actually
916 # happened. Such a system could not be considered "sane".
917 AC_MSG_ERROR([ls -t appears to fail. Make sure there is not a broken
918 alias in your environment])
919 fi
920 if test "$[2]" = conftest.file || test $am_try -eq 2; then
921 break
922 fi
923 # Just in case.
924 sleep 1
925 am_has_slept=yes
926 done
927 test "$[2]" = conftest.file
928 )
929 then
930 # Ok.
931 :
932 else
933 AC_MSG_ERROR([newly created file is older than distributed files!
934 Check your system clock])
935 fi
936 AC_MSG_RESULT([yes])
937 # If we didn't sleep, we still need to ensure time stamps of config.status and
938 # generated files are strictly newer.
939 am_sleep_pid=
940 if grep 'slept: no' conftest.file >/dev/null 2>&1; then
941 ( sleep 1 ) &
942 am_sleep_pid=$!
943 fi
944 AC_CONFIG_COMMANDS_PRE(
945 [AC_MSG_CHECKING([that generated files are newer than configure])
946 if test -n "$am_sleep_pid"; then
947 # Hide warnings about reused PIDs.
948 wait $am_sleep_pid 2>/dev/null
949 fi
950 AC_MSG_RESULT([done])])
951 rm -f conftest.file
952 ])
954 # Copyright (C) 2009-2018 Free Software Foundation, Inc.
955 #
956 # This file is free software; the Free Software Foundation
957 # gives unlimited permission to copy and/or distribute it,
958 # with or without modifications, as long as this notice is preserved.
960 # AM_SILENT_RULES([DEFAULT])
961 # --------------------------
962 # Enable less verbose build rules; with the default set to DEFAULT
963 # ("yes" being less verbose, "no" or empty being verbose).
964 AC_DEFUN([AM_SILENT_RULES],
965 [AC_ARG_ENABLE([silent-rules], [dnl
966 AS_HELP_STRING(
967 [--enable-silent-rules],
968 [less verbose build output (undo: "make V=1")])
969 AS_HELP_STRING(
970 [--disable-silent-rules],
971 [verbose build output (undo: "make V=0")])dnl
972 ])
973 case $enable_silent_rules in @%:@ (((
974 yes) AM_DEFAULT_VERBOSITY=0;;
975 no) AM_DEFAULT_VERBOSITY=1;;
976 *) AM_DEFAULT_VERBOSITY=m4_if([$1], [yes], [0], [1]);;
977 esac
978 dnl
979 dnl A few 'make' implementations (e.g., NonStop OS and NextStep)
980 dnl do not support nested variable expansions.
981 dnl See automake bug#9928 and bug#10237.
982 am_make=${MAKE-make}
983 AC_CACHE_CHECK([whether $am_make supports nested variables],
984 [am_cv_make_support_nested_variables],
985 [if AS_ECHO([['TRUE=$(BAR$(V))
986 BAR0=false
987 BAR1=true
988 V=1
989 am__doit:
990 @$(TRUE)
991 .PHONY: am__doit']]) | $am_make -f - >/dev/null 2>&1; then
992 am_cv_make_support_nested_variables=yes
993 else
994 am_cv_make_support_nested_variables=no
995 fi])
996 if test $am_cv_make_support_nested_variables = yes; then
997 dnl Using '$V' instead of '$(V)' breaks IRIX make.
998 AM_V='$(V)'
999 AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
1000 else
1001 AM_V=$AM_DEFAULT_VERBOSITY
1002 AM_DEFAULT_V=$AM_DEFAULT_VERBOSITY
1003 fi
1004 AC_SUBST([AM_V])dnl
1005 AM_SUBST_NOTMAKE([AM_V])dnl
1006 AC_SUBST([AM_DEFAULT_V])dnl
1007 AM_SUBST_NOTMAKE([AM_DEFAULT_V])dnl
1008 AC_SUBST([AM_DEFAULT_VERBOSITY])dnl
1009 AM_BACKSLASH='\'
1010 AC_SUBST([AM_BACKSLASH])dnl
1011 _AM_SUBST_NOTMAKE([AM_BACKSLASH])dnl
1012 ])
1014 # Copyright (C) 2001-2018 Free Software Foundation, Inc.
1015 #
1016 # This file is free software; the Free Software Foundation
1017 # gives unlimited permission to copy and/or distribute it,
1018 # with or without modifications, as long as this notice is preserved.
1020 # AM_PROG_INSTALL_STRIP
1021 # ---------------------
1022 # One issue with vendor 'install' (even GNU) is that you can't
1023 # specify the program used to strip binaries. This is especially
1024 # annoying in cross-compiling environments, where the build's strip
1025 # is unlikely to handle the host's binaries.
1026 # Fortunately install-sh will honor a STRIPPROG variable, so we
1027 # always use install-sh in "make install-strip", and initialize
1028 # STRIPPROG with the value of the STRIP variable (set by the user).
1029 AC_DEFUN([AM_PROG_INSTALL_STRIP],
1030 [AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
1031 # Installed binaries are usually stripped using 'strip' when the user
1032 # run "make install-strip". However 'strip' might not be the right
1033 # tool to use in cross-compilation environments, therefore Automake
1034 # will honor the 'STRIP' environment variable to overrule this program.
1035 dnl Don't test for $cross_compiling = yes, because it might be 'maybe'.
1036 if test "$cross_compiling" != no; then
1037 AC_CHECK_TOOL([STRIP], [strip], :)
1038 fi
1039 INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
1040 AC_SUBST([INSTALL_STRIP_PROGRAM])])
1042 # Copyright (C) 2006-2018 Free Software Foundation, Inc.
1043 #
1044 # This file is free software; the Free Software Foundation
1045 # gives unlimited permission to copy and/or distribute it,
1046 # with or without modifications, as long as this notice is preserved.
1048 # _AM_SUBST_NOTMAKE(VARIABLE)
1049 # ---------------------------
1050 # Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in.
1051 # This macro is traced by Automake.
1052 AC_DEFUN([_AM_SUBST_NOTMAKE])
1054 # AM_SUBST_NOTMAKE(VARIABLE)
1055 # --------------------------
1056 # Public sister of _AM_SUBST_NOTMAKE.
1057 AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
1059 # Check how to create a tarball. -*- Autoconf -*-
1061 # Copyright (C) 2004-2018 Free Software Foundation, Inc.
1062 #
1063 # This file is free software; the Free Software Foundation
1064 # gives unlimited permission to copy and/or distribute it,
1065 # with or without modifications, as long as this notice is preserved.
1067 # _AM_PROG_TAR(FORMAT)
1068 # --------------------
1069 # Check how to create a tarball in format FORMAT.
1070 # FORMAT should be one of 'v7', 'ustar', or 'pax'.
1071 #
1072 # Substitute a variable $(am__tar) that is a command
1073 # writing to stdout a FORMAT-tarball containing the directory
1074 # $tardir.
1075 # tardir=directory && $(am__tar) > result.tar
1076 #
1077 # Substitute a variable $(am__untar) that extract such
1078 # a tarball read from stdin.
1079 # $(am__untar) < result.tar
1080 #
1081 AC_DEFUN([_AM_PROG_TAR],
1082 [# Always define AMTAR for backward compatibility. Yes, it's still used
1083 # in the wild :-( We should find a proper way to deprecate it ...
1084 AC_SUBST([AMTAR], ['$${TAR-tar}'])
1086 # We'll loop over all known methods to create a tar archive until one works.
1087 _am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
1089 m4_if([$1], [v7],
1090 [am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'],
1092 [m4_case([$1],
1093 [ustar],
1094 [# The POSIX 1988 'ustar' format is defined with fixed-size fields.
1095 # There is notably a 21 bits limit for the UID and the GID. In fact,
1096 # the 'pax' utility can hang on bigger UID/GID (see automake bug#8343
1097 # and bug#13588).
1098 am_max_uid=2097151 # 2^21 - 1
1099 am_max_gid=$am_max_uid
1100 # The $UID and $GID variables are not portable, so we need to resort
1101 # to the POSIX-mandated id(1) utility. Errors in the 'id' calls
1102 # below are definitely unexpected, so allow the users to see them
1103 # (that is, avoid stderr redirection).
1104 am_uid=`id -u || echo unknown`
1105 am_gid=`id -g || echo unknown`
1106 AC_MSG_CHECKING([whether UID '$am_uid' is supported by ustar format])
1107 if test $am_uid -le $am_max_uid; then
1108 AC_MSG_RESULT([yes])
1109 else
1110 AC_MSG_RESULT([no])
1111 _am_tools=none
1112 fi
1113 AC_MSG_CHECKING([whether GID '$am_gid' is supported by ustar format])
1114 if test $am_gid -le $am_max_gid; then
1115 AC_MSG_RESULT([yes])
1116 else
1117 AC_MSG_RESULT([no])
1118 _am_tools=none
1119 fi],
1121 [pax],
1122 [],
1124 [m4_fatal([Unknown tar format])])
1126 AC_MSG_CHECKING([how to create a $1 tar archive])
1128 # Go ahead even if we have the value already cached. We do so because we
1129 # need to set the values for the 'am__tar' and 'am__untar' variables.
1130 _am_tools=${am_cv_prog_tar_$1-$_am_tools}
1132 for _am_tool in $_am_tools; do
1133 case $_am_tool in
1134 gnutar)
1135 for _am_tar in tar gnutar gtar; do
1136 AM_RUN_LOG([$_am_tar --version]) && break
1137 done
1138 am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"'
1139 am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"'
1140 am__untar="$_am_tar -xf -"
1141 ;;
1142 plaintar)
1143 # Must skip GNU tar: if it does not support --format= it doesn't create
1144 # ustar tarball either.
1145 (tar --version) >/dev/null 2>&1 && continue
1146 am__tar='tar chf - "$$tardir"'
1147 am__tar_='tar chf - "$tardir"'
1148 am__untar='tar xf -'
1149 ;;
1150 pax)
1151 am__tar='pax -L -x $1 -w "$$tardir"'
1152 am__tar_='pax -L -x $1 -w "$tardir"'
1153 am__untar='pax -r'
1154 ;;
1155 cpio)
1156 am__tar='find "$$tardir" -print | cpio -o -H $1 -L'
1157 am__tar_='find "$tardir" -print | cpio -o -H $1 -L'
1158 am__untar='cpio -i -H $1 -d'
1159 ;;
1160 none)
1161 am__tar=false
1162 am__tar_=false
1163 am__untar=false
1164 ;;
1165 esac
1167 # If the value was cached, stop now. We just wanted to have am__tar
1168 # and am__untar set.
1169 test -n "${am_cv_prog_tar_$1}" && break
1171 # tar/untar a dummy directory, and stop if the command works.
1172 rm -rf conftest.dir
1173 mkdir conftest.dir
1174 echo GrepMe > conftest.dir/file
1175 AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar])
1176 rm -rf conftest.dir
1177 if test -s conftest.tar; then
1178 AM_RUN_LOG([$am__untar <conftest.tar])
1179 AM_RUN_LOG([cat conftest.dir/file])
1180 grep GrepMe conftest.dir/file >/dev/null 2>&1 && break
1181 fi
1182 done
1183 rm -rf conftest.dir
1185 AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])
1186 AC_MSG_RESULT([$am_cv_prog_tar_$1])])
1188 AC_SUBST([am__tar])
1189 AC_SUBST([am__untar])
1190 ]) # _AM_PROG_TAR
1192 m4_include([scripts/libtool.m4])
1193 m4_include([scripts/ltoptions.m4])
1194 m4_include([scripts/ltsugar.m4])
1195 m4_include([scripts/ltversion.m4])
1196 m4_include([scripts/lt~obsolete.m4])