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1 # generated automatically by aclocal 1.14 -*- Autoconf -*-
3 # Copyright (C) 1996-2013 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) 2002-2013 Free Software Foundation, Inc.
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540 # See automake bug#10828.
541 # To make any issue more visible, cause the running configure to be aborted
542 # by default if the 'rm' program in use doesn't match our expectations; the
543 # user can still override this though.
544 if rm -f && rm -fr && rm -rf; then : OK; else
545 cat >&2 <<'END'
546 Oops!
548 Your 'rm' program seems unable to run without file operands specified
549 on the command line, even when the '-f' option is present. This is contrary
550 to the behaviour of most rm programs out there, and not conforming with
551 the upcoming POSIX standard: <http://austingroupbugs.net/view.php?id=542>
553 Please tell bug-automake@gnu.org about your system, including the value
554 of your $PATH and any error possibly output before this message. This
555 can help us improve future automake versions.
557 END
558 if test x"$ACCEPT_INFERIOR_RM_PROGRAM" = x"yes"; then
559 echo 'Configuration will proceed anyway, since you have set the' >&2
560 echo 'ACCEPT_INFERIOR_RM_PROGRAM variable to "yes"' >&2
561 echo >&2
562 else
563 cat >&2 <<'END'
564 Aborting the configuration process, to ensure you take notice of the issue.
566 You can download and install GNU coreutils to get an 'rm' implementation
567 that behaves properly: <http://www.gnu.org/software/coreutils/>.
569 If you want to complete the configuration process using your problematic
570 'rm' anyway, export the environment variable ACCEPT_INFERIOR_RM_PROGRAM
571 to "yes", and re-run configure.
573 END
574 AC_MSG_ERROR([Your 'rm' program is bad, sorry.])
575 fi
576 fi])
578 dnl Hook into '_AC_COMPILER_EXEEXT' early to learn its expansion. Do not
579 dnl add the conditional right here, as _AC_COMPILER_EXEEXT may be further
580 dnl mangled by Autoconf and run in a shell conditional statement.
581 m4_define([_AC_COMPILER_EXEEXT],
582 m4_defn([_AC_COMPILER_EXEEXT])[m4_provide([_AM_COMPILER_EXEEXT])])
584 # When config.status generates a header, we must update the stamp-h file.
585 # This file resides in the same directory as the config header
586 # that is generated. The stamp files are numbered to have different names.
588 # Autoconf calls _AC_AM_CONFIG_HEADER_HOOK (when defined) in the
589 # loop where config.status creates the headers, so we can generate
590 # our stamp files there.
591 AC_DEFUN([_AC_AM_CONFIG_HEADER_HOOK],
592 [# Compute $1's index in $config_headers.
593 _am_arg=$1
594 _am_stamp_count=1
595 for _am_header in $config_headers :; do
596 case $_am_header in
597 $_am_arg | $_am_arg:* )
598 break ;;
599 * )
600 _am_stamp_count=`expr $_am_stamp_count + 1` ;;
601 esac
602 done
603 echo "timestamp for $_am_arg" >`AS_DIRNAME(["$_am_arg"])`/stamp-h[]$_am_stamp_count])
605 # Copyright (C) 2001-2013 Free Software Foundation, Inc.
606 #
607 # This file is free software; the Free Software Foundation
608 # gives unlimited permission to copy and/or distribute it,
609 # with or without modifications, as long as this notice is preserved.
611 # AM_PROG_INSTALL_SH
612 # ------------------
613 # Define $install_sh.
614 AC_DEFUN([AM_PROG_INSTALL_SH],
615 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
616 if test x"${install_sh}" != xset; then
617 case $am_aux_dir in
618 *\ * | *\ *)
619 install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
620 *)
621 install_sh="\${SHELL} $am_aux_dir/install-sh"
622 esac
623 fi
624 AC_SUBST([install_sh])])
626 # Copyright (C) 2003-2013 Free Software Foundation, Inc.
627 #
628 # This file is free software; the Free Software Foundation
629 # gives unlimited permission to copy and/or distribute it,
630 # with or without modifications, as long as this notice is preserved.
632 # Check whether the underlying file-system supports filenames
633 # with a leading dot. For instance MS-DOS doesn't.
634 AC_DEFUN([AM_SET_LEADING_DOT],
635 [rm -rf .tst 2>/dev/null
636 mkdir .tst 2>/dev/null
637 if test -d .tst; then
638 am__leading_dot=.
639 else
640 am__leading_dot=_
641 fi
642 rmdir .tst 2>/dev/null
643 AC_SUBST([am__leading_dot])])
645 # Add --enable-maintainer-mode option to configure. -*- Autoconf -*-
646 # From Jim Meyering
648 # Copyright (C) 1996-2013 Free Software Foundation, Inc.
649 #
650 # This file is free software; the Free Software Foundation
651 # gives unlimited permission to copy and/or distribute it,
652 # with or without modifications, as long as this notice is preserved.
654 # AM_MAINTAINER_MODE([DEFAULT-MODE])
655 # ----------------------------------
656 # Control maintainer-specific portions of Makefiles.
657 # Default is to disable them, unless 'enable' is passed literally.
658 # For symmetry, 'disable' may be passed as well. Anyway, the user
659 # can override the default with the --enable/--disable switch.
660 AC_DEFUN([AM_MAINTAINER_MODE],
661 [m4_case(m4_default([$1], [disable]),
662 [enable], [m4_define([am_maintainer_other], [disable])],
663 [disable], [m4_define([am_maintainer_other], [enable])],
664 [m4_define([am_maintainer_other], [enable])
665 m4_warn([syntax], [unexpected argument to AM@&t@_MAINTAINER_MODE: $1])])
666 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
667 dnl maintainer-mode's default is 'disable' unless 'enable' is passed
668 AC_ARG_ENABLE([maintainer-mode],
669 [AS_HELP_STRING([--]am_maintainer_other[-maintainer-mode],
670 am_maintainer_other[ make rules and dependencies not useful
671 (and sometimes confusing) to the casual installer])],
672 [USE_MAINTAINER_MODE=$enableval],
673 [USE_MAINTAINER_MODE=]m4_if(am_maintainer_other, [enable], [no], [yes]))
674 AC_MSG_RESULT([$USE_MAINTAINER_MODE])
675 AM_CONDITIONAL([MAINTAINER_MODE], [test $USE_MAINTAINER_MODE = yes])
676 MAINT=$MAINTAINER_MODE_TRUE
677 AC_SUBST([MAINT])dnl
678 ]
679 )
681 # Check to see how 'make' treats includes. -*- Autoconf -*-
683 # Copyright (C) 2001-2013 Free Software Foundation, Inc.
684 #
685 # This file is free software; the Free Software Foundation
686 # gives unlimited permission to copy and/or distribute it,
687 # with or without modifications, as long as this notice is preserved.
689 # AM_MAKE_INCLUDE()
690 # -----------------
691 # Check to see how make treats includes.
692 AC_DEFUN([AM_MAKE_INCLUDE],
693 [am_make=${MAKE-make}
694 cat > confinc << 'END'
695 am__doit:
696 @echo this is the am__doit target
697 .PHONY: am__doit
698 END
699 # If we don't find an include directive, just comment out the code.
700 AC_MSG_CHECKING([for style of include used by $am_make])
701 am__include="#"
702 am__quote=
703 _am_result=none
704 # First try GNU make style include.
705 echo "include confinc" > confmf
706 # Ignore all kinds of additional output from 'make'.
707 case `$am_make -s -f confmf 2> /dev/null` in #(
708 *the\ am__doit\ target*)
709 am__include=include
710 am__quote=
711 _am_result=GNU
712 ;;
713 esac
714 # Now try BSD make style include.
715 if test "$am__include" = "#"; then
716 echo '.include "confinc"' > confmf
717 case `$am_make -s -f confmf 2> /dev/null` in #(
718 *the\ am__doit\ target*)
719 am__include=.include
720 am__quote="\""
721 _am_result=BSD
722 ;;
723 esac
724 fi
725 AC_SUBST([am__include])
726 AC_SUBST([am__quote])
727 AC_MSG_RESULT([$_am_result])
728 rm -f confinc confmf
729 ])
731 # Fake the existence of programs that GNU maintainers use. -*- Autoconf -*-
733 # Copyright (C) 1997-2013 Free Software Foundation, Inc.
734 #
735 # This file is free software; the Free Software Foundation
736 # gives unlimited permission to copy and/or distribute it,
737 # with or without modifications, as long as this notice is preserved.
739 # AM_MISSING_PROG(NAME, PROGRAM)
740 # ------------------------------
741 AC_DEFUN([AM_MISSING_PROG],
742 [AC_REQUIRE([AM_MISSING_HAS_RUN])
743 $1=${$1-"${am_missing_run}$2"}
744 AC_SUBST($1)])
746 # AM_MISSING_HAS_RUN
747 # ------------------
748 # Define MISSING if not defined so far and test if it is modern enough.
749 # If it is, set am_missing_run to use it, otherwise, to nothing.
750 AC_DEFUN([AM_MISSING_HAS_RUN],
751 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
752 AC_REQUIRE_AUX_FILE([missing])dnl
753 if test x"${MISSING+set}" != xset; then
754 case $am_aux_dir in
755 *\ * | *\ *)
756 MISSING="\${SHELL} \"$am_aux_dir/missing\"" ;;
757 *)
758 MISSING="\${SHELL} $am_aux_dir/missing" ;;
759 esac
760 fi
761 # Use eval to expand $SHELL
762 if eval "$MISSING --is-lightweight"; then
763 am_missing_run="$MISSING "
764 else
765 am_missing_run=
766 AC_MSG_WARN(['missing' script is too old or missing])
767 fi
768 ])
770 # Helper functions for option handling. -*- Autoconf -*-
772 # Copyright (C) 2001-2013 Free Software Foundation, Inc.
773 #
774 # This file is free software; the Free Software Foundation
775 # gives unlimited permission to copy and/or distribute it,
776 # with or without modifications, as long as this notice is preserved.
778 # _AM_MANGLE_OPTION(NAME)
779 # -----------------------
780 AC_DEFUN([_AM_MANGLE_OPTION],
781 [[_AM_OPTION_]m4_bpatsubst($1, [[^a-zA-Z0-9_]], [_])])
783 # _AM_SET_OPTION(NAME)
784 # --------------------
785 # Set option NAME. Presently that only means defining a flag for this option.
786 AC_DEFUN([_AM_SET_OPTION],
787 [m4_define(_AM_MANGLE_OPTION([$1]), [1])])
789 # _AM_SET_OPTIONS(OPTIONS)
790 # ------------------------
791 # OPTIONS is a space-separated list of Automake options.
792 AC_DEFUN([_AM_SET_OPTIONS],
793 [m4_foreach_w([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])])
795 # _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET])
796 # -------------------------------------------
797 # Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
798 AC_DEFUN([_AM_IF_OPTION],
799 [m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])
801 # Copyright (C) 1999-2013 Free Software Foundation, Inc.
802 #
803 # This file is free software; the Free Software Foundation
804 # gives unlimited permission to copy and/or distribute it,
805 # with or without modifications, as long as this notice is preserved.
807 # _AM_PROG_CC_C_O
808 # ---------------
809 # Like AC_PROG_CC_C_O, but changed for automake. We rewrite AC_PROG_CC
810 # to automatically call this.
811 AC_DEFUN([_AM_PROG_CC_C_O],
812 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
813 AC_REQUIRE_AUX_FILE([compile])dnl
814 AC_LANG_PUSH([C])dnl
815 AC_CACHE_CHECK(
816 [whether $CC understands -c and -o together],
817 [am_cv_prog_cc_c_o],
818 [AC_LANG_CONFTEST([AC_LANG_PROGRAM([])])
819 # Make sure it works both with $CC and with simple cc.
820 # Following AC_PROG_CC_C_O, we do the test twice because some
821 # compilers refuse to overwrite an existing .o file with -o,
822 # though they will create one.
823 am_cv_prog_cc_c_o=yes
824 for am_i in 1 2; do
825 if AM_RUN_LOG([$CC -c conftest.$ac_ext -o conftest2.$ac_objext]) \
826 && test -f conftest2.$ac_objext; then
827 : OK
828 else
829 am_cv_prog_cc_c_o=no
830 break
831 fi
832 done
833 rm -f core conftest*
834 unset am_i])
835 if test "$am_cv_prog_cc_c_o" != yes; then
836 # Losing compiler, so override with the script.
837 # FIXME: It is wrong to rewrite CC.
838 # But if we don't then we get into trouble of one sort or another.
839 # A longer-term fix would be to have automake use am__CC in this case,
840 # and then we could set am__CC="\$(top_srcdir)/compile \$(CC)"
841 CC="$am_aux_dir/compile $CC"
842 fi
843 AC_LANG_POP([C])])
845 # For backward compatibility.
846 AC_DEFUN_ONCE([AM_PROG_CC_C_O], [AC_REQUIRE([AC_PROG_CC])])
848 # Copyright (C) 2001-2013 Free Software Foundation, Inc.
849 #
850 # This file is free software; the Free Software Foundation
851 # gives unlimited permission to copy and/or distribute it,
852 # with or without modifications, as long as this notice is preserved.
854 # AM_RUN_LOG(COMMAND)
855 # -------------------
856 # Run COMMAND, save the exit status in ac_status, and log it.
857 # (This has been adapted from Autoconf's _AC_RUN_LOG macro.)
858 AC_DEFUN([AM_RUN_LOG],
859 [{ echo "$as_me:$LINENO: $1" >&AS_MESSAGE_LOG_FD
860 ($1) >&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD
861 ac_status=$?
862 echo "$as_me:$LINENO: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
863 (exit $ac_status); }])
865 # Check to make sure that the build environment is sane. -*- Autoconf -*-
867 # Copyright (C) 1996-2013 Free Software Foundation, Inc.
868 #
869 # This file is free software; the Free Software Foundation
870 # gives unlimited permission to copy and/or distribute it,
871 # with or without modifications, as long as this notice is preserved.
873 # AM_SANITY_CHECK
874 # ---------------
875 AC_DEFUN([AM_SANITY_CHECK],
876 [AC_MSG_CHECKING([whether build environment is sane])
877 # Reject unsafe characters in $srcdir or the absolute working directory
878 # name. Accept space and tab only in the latter.
879 am_lf='
880 '
881 case `pwd` in
882 *[[\\\"\#\$\&\'\`$am_lf]]*)
883 AC_MSG_ERROR([unsafe absolute working directory name]);;
884 esac
885 case $srcdir in
886 *[[\\\"\#\$\&\'\`$am_lf\ \ ]]*)
887 AC_MSG_ERROR([unsafe srcdir value: '$srcdir']);;
888 esac
890 # Do 'set' in a subshell so we don't clobber the current shell's
891 # arguments. Must try -L first in case configure is actually a
892 # symlink; some systems play weird games with the mod time of symlinks
893 # (eg FreeBSD returns the mod time of the symlink's containing
894 # directory).
895 if (
896 am_has_slept=no
897 for am_try in 1 2; do
898 echo "timestamp, slept: $am_has_slept" > conftest.file
899 set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
900 if test "$[*]" = "X"; then
901 # -L didn't work.
902 set X `ls -t "$srcdir/configure" conftest.file`
903 fi
904 if test "$[*]" != "X $srcdir/configure conftest.file" \
905 && test "$[*]" != "X conftest.file $srcdir/configure"; then
907 # If neither matched, then we have a broken ls. This can happen
908 # if, for instance, CONFIG_SHELL is bash and it inherits a
909 # broken ls alias from the environment. This has actually
910 # happened. Such a system could not be considered "sane".
911 AC_MSG_ERROR([ls -t appears to fail. Make sure there is not a broken
912 alias in your environment])
913 fi
914 if test "$[2]" = conftest.file || test $am_try -eq 2; then
915 break
916 fi
917 # Just in case.
918 sleep 1
919 am_has_slept=yes
920 done
921 test "$[2]" = conftest.file
922 )
923 then
924 # Ok.
925 :
926 else
927 AC_MSG_ERROR([newly created file is older than distributed files!
928 Check your system clock])
929 fi
930 AC_MSG_RESULT([yes])
931 # If we didn't sleep, we still need to ensure time stamps of config.status and
932 # generated files are strictly newer.
933 am_sleep_pid=
934 if grep 'slept: no' conftest.file >/dev/null 2>&1; then
935 ( sleep 1 ) &
936 am_sleep_pid=$!
937 fi
938 AC_CONFIG_COMMANDS_PRE(
939 [AC_MSG_CHECKING([that generated files are newer than configure])
940 if test -n "$am_sleep_pid"; then
941 # Hide warnings about reused PIDs.
942 wait $am_sleep_pid 2>/dev/null
943 fi
944 AC_MSG_RESULT([done])])
945 rm -f conftest.file
946 ])
948 # Copyright (C) 2009-2013 Free Software Foundation, Inc.
949 #
950 # This file is free software; the Free Software Foundation
951 # gives unlimited permission to copy and/or distribute it,
952 # with or without modifications, as long as this notice is preserved.
954 # AM_SILENT_RULES([DEFAULT])
955 # --------------------------
956 # Enable less verbose build rules; with the default set to DEFAULT
957 # ("yes" being less verbose, "no" or empty being verbose).
958 AC_DEFUN([AM_SILENT_RULES],
959 [AC_ARG_ENABLE([silent-rules], [dnl
960 AS_HELP_STRING(
961 [--enable-silent-rules],
962 [less verbose build output (undo: "make V=1")])
963 AS_HELP_STRING(
964 [--disable-silent-rules],
965 [verbose build output (undo: "make V=0")])dnl
966 ])
967 case $enable_silent_rules in @%:@ (((
968 yes) AM_DEFAULT_VERBOSITY=0;;
969 no) AM_DEFAULT_VERBOSITY=1;;
970 *) AM_DEFAULT_VERBOSITY=m4_if([$1], [yes], [0], [1]);;
971 esac
972 dnl
973 dnl A few 'make' implementations (e.g., NonStop OS and NextStep)
974 dnl do not support nested variable expansions.
975 dnl See automake bug#9928 and bug#10237.
976 am_make=${MAKE-make}
977 AC_CACHE_CHECK([whether $am_make supports nested variables],
978 [am_cv_make_support_nested_variables],
979 [if AS_ECHO([['TRUE=$(BAR$(V))
980 BAR0=false
981 BAR1=true
982 V=1
983 am__doit:
984 @$(TRUE)
985 .PHONY: am__doit']]) | $am_make -f - >/dev/null 2>&1; then
986 am_cv_make_support_nested_variables=yes
987 else
988 am_cv_make_support_nested_variables=no
989 fi])
990 if test $am_cv_make_support_nested_variables = yes; then
991 dnl Using '$V' instead of '$(V)' breaks IRIX make.
992 AM_V='$(V)'
993 AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
994 else
995 AM_V=$AM_DEFAULT_VERBOSITY
996 AM_DEFAULT_V=$AM_DEFAULT_VERBOSITY
997 fi
998 AC_SUBST([AM_V])dnl
999 AM_SUBST_NOTMAKE([AM_V])dnl
1000 AC_SUBST([AM_DEFAULT_V])dnl
1001 AM_SUBST_NOTMAKE([AM_DEFAULT_V])dnl
1002 AC_SUBST([AM_DEFAULT_VERBOSITY])dnl
1003 AM_BACKSLASH='\'
1004 AC_SUBST([AM_BACKSLASH])dnl
1005 _AM_SUBST_NOTMAKE([AM_BACKSLASH])dnl
1006 ])
1008 # Copyright (C) 2001-2013 Free Software Foundation, Inc.
1009 #
1010 # This file is free software; the Free Software Foundation
1011 # gives unlimited permission to copy and/or distribute it,
1012 # with or without modifications, as long as this notice is preserved.
1014 # AM_PROG_INSTALL_STRIP
1015 # ---------------------
1016 # One issue with vendor 'install' (even GNU) is that you can't
1017 # specify the program used to strip binaries. This is especially
1018 # annoying in cross-compiling environments, where the build's strip
1019 # is unlikely to handle the host's binaries.
1020 # Fortunately install-sh will honor a STRIPPROG variable, so we
1021 # always use install-sh in "make install-strip", and initialize
1022 # STRIPPROG with the value of the STRIP variable (set by the user).
1023 AC_DEFUN([AM_PROG_INSTALL_STRIP],
1024 [AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
1025 # Installed binaries are usually stripped using 'strip' when the user
1026 # run "make install-strip". However 'strip' might not be the right
1027 # tool to use in cross-compilation environments, therefore Automake
1028 # will honor the 'STRIP' environment variable to overrule this program.
1029 dnl Don't test for $cross_compiling = yes, because it might be 'maybe'.
1030 if test "$cross_compiling" != no; then
1031 AC_CHECK_TOOL([STRIP], [strip], :)
1032 fi
1033 INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
1034 AC_SUBST([INSTALL_STRIP_PROGRAM])])
1036 # Copyright (C) 2006-2013 Free Software Foundation, Inc.
1037 #
1038 # This file is free software; the Free Software Foundation
1039 # gives unlimited permission to copy and/or distribute it,
1040 # with or without modifications, as long as this notice is preserved.
1042 # _AM_SUBST_NOTMAKE(VARIABLE)
1043 # ---------------------------
1044 # Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in.
1045 # This macro is traced by Automake.
1046 AC_DEFUN([_AM_SUBST_NOTMAKE])
1048 # AM_SUBST_NOTMAKE(VARIABLE)
1049 # --------------------------
1050 # Public sister of _AM_SUBST_NOTMAKE.
1051 AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
1053 # Check how to create a tarball. -*- Autoconf -*-
1055 # Copyright (C) 2004-2013 Free Software Foundation, Inc.
1056 #
1057 # This file is free software; the Free Software Foundation
1058 # gives unlimited permission to copy and/or distribute it,
1059 # with or without modifications, as long as this notice is preserved.
1061 # _AM_PROG_TAR(FORMAT)
1062 # --------------------
1063 # Check how to create a tarball in format FORMAT.
1064 # FORMAT should be one of 'v7', 'ustar', or 'pax'.
1065 #
1066 # Substitute a variable $(am__tar) that is a command
1067 # writing to stdout a FORMAT-tarball containing the directory
1068 # $tardir.
1069 # tardir=directory && $(am__tar) > result.tar
1070 #
1071 # Substitute a variable $(am__untar) that extract such
1072 # a tarball read from stdin.
1073 # $(am__untar) < result.tar
1074 #
1075 AC_DEFUN([_AM_PROG_TAR],
1076 [# Always define AMTAR for backward compatibility. Yes, it's still used
1077 # in the wild :-( We should find a proper way to deprecate it ...
1078 AC_SUBST([AMTAR], ['$${TAR-tar}'])
1080 # We'll loop over all known methods to create a tar archive until one works.
1081 _am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
1083 m4_if([$1], [v7],
1084 [am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'],
1086 [m4_case([$1],
1087 [ustar],
1088 [# The POSIX 1988 'ustar' format is defined with fixed-size fields.
1089 # There is notably a 21 bits limit for the UID and the GID. In fact,
1090 # the 'pax' utility can hang on bigger UID/GID (see automake bug#8343
1091 # and bug#13588).
1092 am_max_uid=2097151 # 2^21 - 1
1093 am_max_gid=$am_max_uid
1094 # The $UID and $GID variables are not portable, so we need to resort
1095 # to the POSIX-mandated id(1) utility. Errors in the 'id' calls
1096 # below are definitely unexpected, so allow the users to see them
1097 # (that is, avoid stderr redirection).
1098 am_uid=`id -u || echo unknown`
1099 am_gid=`id -g || echo unknown`
1100 AC_MSG_CHECKING([whether UID '$am_uid' is supported by ustar format])
1101 if test $am_uid -le $am_max_uid; then
1102 AC_MSG_RESULT([yes])
1103 else
1104 AC_MSG_RESULT([no])
1105 _am_tools=none
1106 fi
1107 AC_MSG_CHECKING([whether GID '$am_gid' is supported by ustar format])
1108 if test $am_gid -le $am_max_gid; then
1109 AC_MSG_RESULT([yes])
1110 else
1111 AC_MSG_RESULT([no])
1112 _am_tools=none
1113 fi],
1115 [pax],
1116 [],
1118 [m4_fatal([Unknown tar format])])
1120 AC_MSG_CHECKING([how to create a $1 tar archive])
1122 # Go ahead even if we have the value already cached. We do so because we
1123 # need to set the values for the 'am__tar' and 'am__untar' variables.
1124 _am_tools=${am_cv_prog_tar_$1-$_am_tools}
1126 for _am_tool in $_am_tools; do
1127 case $_am_tool in
1128 gnutar)
1129 for _am_tar in tar gnutar gtar; do
1130 AM_RUN_LOG([$_am_tar --version]) && break
1131 done
1132 am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"'
1133 am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"'
1134 am__untar="$_am_tar -xf -"
1135 ;;
1136 plaintar)
1137 # Must skip GNU tar: if it does not support --format= it doesn't create
1138 # ustar tarball either.
1139 (tar --version) >/dev/null 2>&1 && continue
1140 am__tar='tar chf - "$$tardir"'
1141 am__tar_='tar chf - "$tardir"'
1142 am__untar='tar xf -'
1143 ;;
1144 pax)
1145 am__tar='pax -L -x $1 -w "$$tardir"'
1146 am__tar_='pax -L -x $1 -w "$tardir"'
1147 am__untar='pax -r'
1148 ;;
1149 cpio)
1150 am__tar='find "$$tardir" -print | cpio -o -H $1 -L'
1151 am__tar_='find "$tardir" -print | cpio -o -H $1 -L'
1152 am__untar='cpio -i -H $1 -d'
1153 ;;
1154 none)
1155 am__tar=false
1156 am__tar_=false
1157 am__untar=false
1158 ;;
1159 esac
1161 # If the value was cached, stop now. We just wanted to have am__tar
1162 # and am__untar set.
1163 test -n "${am_cv_prog_tar_$1}" && break
1165 # tar/untar a dummy directory, and stop if the command works.
1166 rm -rf conftest.dir
1167 mkdir conftest.dir
1168 echo GrepMe > conftest.dir/file
1169 AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar])
1170 rm -rf conftest.dir
1171 if test -s conftest.tar; then
1172 AM_RUN_LOG([$am__untar <conftest.tar])
1173 AM_RUN_LOG([cat conftest.dir/file])
1174 grep GrepMe conftest.dir/file >/dev/null 2>&1 && break
1175 fi
1176 done
1177 rm -rf conftest.dir
1179 AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])
1180 AC_MSG_RESULT([$am_cv_prog_tar_$1])])
1182 AC_SUBST([am__tar])
1183 AC_SUBST([am__untar])
1184 ]) # _AM_PROG_TAR