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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.
4
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
12 # PARTICULAR PURPOSE.
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544 AM_MISSING_PROG([MAKEINFO], [makeinfo])
545 AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
546 AC_REQUIRE([AM_PROG_INSTALL_STRIP])dnl
547 AC_REQUIRE([AC_PROG_MKDIR_P])dnl
548 # For better backward compatibility. To be removed once Automake 1.9.x
549 # dies out for good. For more background, see:
550 # <https://lists.gnu.org/archive/html/automake/2012-07/msg00001.html>
551 # <https://lists.gnu.org/archive/html/automake/2012-07/msg00014.html>
552 AC_SUBST([mkdir_p], ['$(MKDIR_P)'])
553 # We need awk for the "check" target (and possibly the TAP driver). The
554 # system "awk" is bad on some platforms.
555 AC_REQUIRE([AC_PROG_AWK])dnl
556 AC_REQUIRE([AC_PROG_MAKE_SET])dnl
557 AC_REQUIRE([AM_SET_LEADING_DOT])dnl
558 _AM_IF_OPTION([tar-ustar], [_AM_PROG_TAR([ustar])],
559 [_AM_IF_OPTION([tar-pax], [_AM_PROG_TAR([pax])],
560 [_AM_PROG_TAR([v7])])])
561 _AM_IF_OPTION([no-dependencies],,
562 [AC_PROVIDE_IFELSE([AC_PROG_CC],
563 [_AM_DEPENDENCIES([CC])],
564 [m4_define([AC_PROG_CC],
565 m4_defn([AC_PROG_CC])[_AM_DEPENDENCIES([CC])])])dnl
566 AC_PROVIDE_IFELSE([AC_PROG_CXX],
567 [_AM_DEPENDENCIES([CXX])],
568 [m4_define([AC_PROG_CXX],
569 m4_defn([AC_PROG_CXX])[_AM_DEPENDENCIES([CXX])])])dnl
570 AC_PROVIDE_IFELSE([AC_PROG_OBJC],
571 [_AM_DEPENDENCIES([OBJC])],
572 [m4_define([AC_PROG_OBJC],
573 m4_defn([AC_PROG_OBJC])[_AM_DEPENDENCIES([OBJC])])])dnl
574 AC_PROVIDE_IFELSE([AC_PROG_OBJCXX],
575 [_AM_DEPENDENCIES([OBJCXX])],
576 [m4_define([AC_PROG_OBJCXX],
577 m4_defn([AC_PROG_OBJCXX])[_AM_DEPENDENCIES([OBJCXX])])])dnl
578 ])
579 AC_REQUIRE([AM_SILENT_RULES])dnl
580 dnl The testsuite driver may need to know about EXEEXT, so add the
581 dnl 'am__EXEEXT' conditional if _AM_COMPILER_EXEEXT was seen. This
582 dnl macro is hooked onto _AC_COMPILER_EXEEXT early, see below.
583 AC_CONFIG_COMMANDS_PRE(dnl
584 [m4_provide_if([_AM_COMPILER_EXEEXT],
585 [AM_CONDITIONAL([am__EXEEXT], [test -n "$EXEEXT"])])])dnl
586
587 # POSIX will say in a future version that running "rm -f" with no argument
588 # is OK; and we want to be able to make that assumption in our Makefile
589 # recipes. So use an aggressive probe to check that the usage we want is
590 # actually supported "in the wild" to an acceptable degree.
591 # See automake bug#10828.
592 # To make any issue more visible, cause the running configure to be aborted
593 # by default if the 'rm' program in use doesn't match our expectations; the
594 # user can still override this though.
595 if rm -f && rm -fr && rm -rf; then : OK; else
596 cat >&2 <<'END'
597 Oops!
598
599 Your 'rm' program seems unable to run without file operands specified
600 on the command line, even when the '-f' option is present. This is contrary
601 to the behaviour of most rm programs out there, and not conforming with
602 the upcoming POSIX standard: <http://austingroupbugs.net/view.php?id=542>
603
604 Please tell bug-automake@gnu.org about your system, including the value
605 of your $PATH and any error possibly output before this message. This
606 can help us improve future automake versions.
607
608 END
609 if test x"$ACCEPT_INFERIOR_RM_PROGRAM" = x"yes"; then
610 echo 'Configuration will proceed anyway, since you have set the' >&2
611 echo 'ACCEPT_INFERIOR_RM_PROGRAM variable to "yes"' >&2
612 echo >&2
613 else
614 cat >&2 <<'END'
615 Aborting the configuration process, to ensure you take notice of the issue.
616
617 You can download and install GNU coreutils to get an 'rm' implementation
618 that behaves properly: <https://www.gnu.org/software/coreutils/>.
619
620 If you want to complete the configuration process using your problematic
621 'rm' anyway, export the environment variable ACCEPT_INFERIOR_RM_PROGRAM
622 to "yes", and re-run configure.
623
624 END
625 AC_MSG_ERROR([Your 'rm' program is bad, sorry.])
626 fi
627 fi
628 dnl The trailing newline in this macro's definition is deliberate, for
629 dnl backward compatibility and to allow trailing 'dnl'-style comments
630 dnl after the AM_INIT_AUTOMAKE invocation. See automake bug#16841.
631 ])
632
633 dnl Hook into '_AC_COMPILER_EXEEXT' early to learn its expansion. Do not
634 dnl add the conditional right here, as _AC_COMPILER_EXEEXT may be further
635 dnl mangled by Autoconf and run in a shell conditional statement.
636 m4_define([_AC_COMPILER_EXEEXT],
637 m4_defn([_AC_COMPILER_EXEEXT])[m4_provide([_AM_COMPILER_EXEEXT])])
638
639 # When config.status generates a header, we must update the stamp-h file.
640 # This file resides in the same directory as the config header
641 # that is generated. The stamp files are numbered to have different names.
642
643 # Autoconf calls _AC_AM_CONFIG_HEADER_HOOK (when defined) in the
644 # loop where config.status creates the headers, so we can generate
645 # our stamp files there.
646 AC_DEFUN([_AC_AM_CONFIG_HEADER_HOOK],
647 [# Compute $1's index in $config_headers.
648 _am_arg=$1
649 _am_stamp_count=1
650 for _am_header in $config_headers :; do
651 case $_am_header in
652 $_am_arg | $_am_arg:* )
653 break ;;
654 * )
655 _am_stamp_count=`expr $_am_stamp_count + 1` ;;
656 esac
657 done
658 echo "timestamp for $_am_arg" >`AS_DIRNAME(["$_am_arg"])`/stamp-h[]$_am_stamp_count])
659
660 # Copyright (C) 2001-2020 Free Software Foundation, Inc.
661 #
662 # This file is free software; the Free Software Foundation
663 # gives unlimited permission to copy and/or distribute it,
664 # with or without modifications, as long as this notice is preserved.
665
666 # AM_PROG_INSTALL_SH
667 # ------------------
668 # Define $install_sh.
669 AC_DEFUN([AM_PROG_INSTALL_SH],
670 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
671 if test x"${install_sh+set}" != xset; then
672 case $am_aux_dir in
673 *\ * | *\ *)
674 install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
675 *)
676 install_sh="\${SHELL} $am_aux_dir/install-sh"
677 esac
678 fi
679 AC_SUBST([install_sh])])
680
681 # Copyright (C) 2003-2020 Free Software Foundation, Inc.
682 #
683 # This file is free software; the Free Software Foundation
684 # gives unlimited permission to copy and/or distribute it,
685 # with or without modifications, as long as this notice is preserved.
686
687 # Check whether the underlying file-system supports filenames
688 # with a leading dot. For instance MS-DOS doesn't.
689 AC_DEFUN([AM_SET_LEADING_DOT],
690 [rm -rf .tst 2>/dev/null
691 mkdir .tst 2>/dev/null
692 if test -d .tst; then
693 am__leading_dot=.
694 else
695 am__leading_dot=_
696 fi
697 rmdir .tst 2>/dev/null
698 AC_SUBST([am__leading_dot])])
699
700 # Check to see how 'make' treats includes. -*- Autoconf -*-
701
702 # Copyright (C) 2001-2020 Free Software Foundation, Inc.
703 #
704 # This file is free software; the Free Software Foundation
705 # gives unlimited permission to copy and/or distribute it,
706 # with or without modifications, as long as this notice is preserved.
707
708 # AM_MAKE_INCLUDE()
709 # -----------------
710 # Check whether make has an 'include' directive that can support all
711 # the idioms we need for our automatic dependency tracking code.
712 AC_DEFUN([AM_MAKE_INCLUDE],
713 [AC_MSG_CHECKING([whether ${MAKE-make} supports the include directive])
714 cat > confinc.mk << 'END'
715 am__doit:
716 @echo this is the am__doit target >confinc.out
717 .PHONY: am__doit
718 END
719 am__include="#"
720 am__quote=
721 # BSD make does it like this.
722 echo '.include "confinc.mk" # ignored' > confmf.BSD
723 # Other make implementations (GNU, Solaris 10, AIX) do it like this.
724 echo 'include confinc.mk # ignored' > confmf.GNU
725 _am_result=no
726 for s in GNU BSD; do
727 AM_RUN_LOG([${MAKE-make} -f confmf.$s && cat confinc.out])
728 AS_CASE([$?:`cat confinc.out 2>/dev/null`],
729 ['0:this is the am__doit target'],
730 [AS_CASE([$s],
731 [BSD], [am__include='.include' am__quote='"'],
732 [am__include='include' am__quote=''])])
733 if test "$am__include" != "#"; then
734 _am_result="yes ($s style)"
735 break
736 fi
737 done
738 rm -f confinc.* confmf.*
739 AC_MSG_RESULT([${_am_result}])
740 AC_SUBST([am__include])])
741 AC_SUBST([am__quote])])
742
743 # Fake the existence of programs that GNU maintainers use. -*- Autoconf -*-
744
745 # Copyright (C) 1997-2020 Free Software Foundation, Inc.
746 #
747 # This file is free software; the Free Software Foundation
748 # gives unlimited permission to copy and/or distribute it,
749 # with or without modifications, as long as this notice is preserved.
750
751 # AM_MISSING_PROG(NAME, PROGRAM)
752 # ------------------------------
753 AC_DEFUN([AM_MISSING_PROG],
754 [AC_REQUIRE([AM_MISSING_HAS_RUN])
755 $1=${$1-"${am_missing_run}$2"}
756 AC_SUBST($1)])
757
758 # AM_MISSING_HAS_RUN
759 # ------------------
760 # Define MISSING if not defined so far and test if it is modern enough.
761 # If it is, set am_missing_run to use it, otherwise, to nothing.
762 AC_DEFUN([AM_MISSING_HAS_RUN],
763 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
764 AC_REQUIRE_AUX_FILE([missing])dnl
765 if test x"${MISSING+set}" != xset; then
766 MISSING="\${SHELL} '$am_aux_dir/missing'"
767 fi
768 # Use eval to expand $SHELL
769 if eval "$MISSING --is-lightweight"; then
770 am_missing_run="$MISSING "
771 else
772 am_missing_run=
773 AC_MSG_WARN(['missing' script is too old or missing])
774 fi
775 ])
776
777 # Helper functions for option handling. -*- Autoconf -*-
778
779 # Copyright (C) 2001-2020 Free Software Foundation, Inc.
780 #
781 # This file is free software; the Free Software Foundation
782 # gives unlimited permission to copy and/or distribute it,
783 # with or without modifications, as long as this notice is preserved.
784
785 # _AM_MANGLE_OPTION(NAME)
786 # -----------------------
787 AC_DEFUN([_AM_MANGLE_OPTION],
788 [[_AM_OPTION_]m4_bpatsubst($1, [[^a-zA-Z0-9_]], [_])])
789
790 # _AM_SET_OPTION(NAME)
791 # --------------------
792 # Set option NAME. Presently that only means defining a flag for this option.
793 AC_DEFUN([_AM_SET_OPTION],
794 [m4_define(_AM_MANGLE_OPTION([$1]), [1])])
795
796 # _AM_SET_OPTIONS(OPTIONS)
797 # ------------------------
798 # OPTIONS is a space-separated list of Automake options.
799 AC_DEFUN([_AM_SET_OPTIONS],
800 [m4_foreach_w([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])])
801
802 # _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET])
803 # -------------------------------------------
804 # Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
805 AC_DEFUN([_AM_IF_OPTION],
806 [m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])
807
808 # Copyright (C) 1999-2020 Free Software Foundation, Inc.
809 #
810 # This file is free software; the Free Software Foundation
811 # gives unlimited permission to copy and/or distribute it,
812 # with or without modifications, as long as this notice is preserved.
813
814 # _AM_PROG_CC_C_O
815 # ---------------
816 # Like AC_PROG_CC_C_O, but changed for automake. We rewrite AC_PROG_CC
817 # to automatically call this.
818 AC_DEFUN([_AM_PROG_CC_C_O],
819 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
820 AC_REQUIRE_AUX_FILE([compile])dnl
821 AC_LANG_PUSH([C])dnl
822 AC_CACHE_CHECK(
823 [whether $CC understands -c and -o together],
824 [am_cv_prog_cc_c_o],
825 [AC_LANG_CONFTEST([AC_LANG_PROGRAM([])])
826 # Make sure it works both with $CC and with simple cc.
827 # Following AC_PROG_CC_C_O, we do the test twice because some
828 # compilers refuse to overwrite an existing .o file with -o,
829 # though they will create one.
830 am_cv_prog_cc_c_o=yes
831 for am_i in 1 2; do
832 if AM_RUN_LOG([$CC -c conftest.$ac_ext -o conftest2.$ac_objext]) \
833 && test -f conftest2.$ac_objext; then
834 : OK
835 else
836 am_cv_prog_cc_c_o=no
837 break
838 fi
839 done
840 rm -f core conftest*
841 unset am_i])
842 if test "$am_cv_prog_cc_c_o" != yes; then
843 # Losing compiler, so override with the script.
844 # FIXME: It is wrong to rewrite CC.
845 # But if we don't then we get into trouble of one sort or another.
846 # A longer-term fix would be to have automake use am__CC in this case,
847 # and then we could set am__CC="\$(top_srcdir)/compile \$(CC)"
848 CC="$am_aux_dir/compile $CC"
849 fi
850 AC_LANG_POP([C])])
851
852 # For backward compatibility.
853 AC_DEFUN_ONCE([AM_PROG_CC_C_O], [AC_REQUIRE([AC_PROG_CC])])
854
855 # Copyright (C) 2001-2020 Free Software Foundation, Inc.
856 #
857 # This file is free software; the Free Software Foundation
858 # gives unlimited permission to copy and/or distribute it,
859 # with or without modifications, as long as this notice is preserved.
860
861 # AM_RUN_LOG(COMMAND)
862 # -------------------
863 # Run COMMAND, save the exit status in ac_status, and log it.
864 # (This has been adapted from Autoconf's _AC_RUN_LOG macro.)
865 AC_DEFUN([AM_RUN_LOG],
866 [{ echo "$as_me:$LINENO: $1" >&AS_MESSAGE_LOG_FD
867 ($1) >&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD
868 ac_status=$?
869 echo "$as_me:$LINENO: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
870 (exit $ac_status); }])
871
872 # Check to make sure that the build environment is sane. -*- Autoconf -*-
873
874 # Copyright (C) 1996-2020 Free Software Foundation, Inc.
875 #
876 # This file is free software; the Free Software Foundation
877 # gives unlimited permission to copy and/or distribute it,
878 # with or without modifications, as long as this notice is preserved.
879
880 # AM_SANITY_CHECK
881 # ---------------
882 AC_DEFUN([AM_SANITY_CHECK],
883 [AC_MSG_CHECKING([whether build environment is sane])
884 # Reject unsafe characters in $srcdir or the absolute working directory
885 # name. Accept space and tab only in the latter.
886 am_lf='
887 '
888 case `pwd` in
889 *[[\\\"\#\$\&\'\`$am_lf]]*)
890 AC_MSG_ERROR([unsafe absolute working directory name]);;
891 esac
892 case $srcdir in
893 *[[\\\"\#\$\&\'\`$am_lf\ \ ]]*)
894 AC_MSG_ERROR([unsafe srcdir value: '$srcdir']);;
895 esac
896
897 # Do 'set' in a subshell so we don't clobber the current shell's
898 # arguments. Must try -L first in case configure is actually a
899 # symlink; some systems play weird games with the mod time of symlinks
900 # (eg FreeBSD returns the mod time of the symlink's containing
901 # directory).
902 if (
903 am_has_slept=no
904 for am_try in 1 2; do
905 echo "timestamp, slept: $am_has_slept" > conftest.file
906 set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
907 if test "$[*]" = "X"; then
908 # -L didn't work.
909 set X `ls -t "$srcdir/configure" conftest.file`
910 fi
911 if test "$[*]" != "X $srcdir/configure conftest.file" \
912 && test "$[*]" != "X conftest.file $srcdir/configure"; then
913
914 # If neither matched, then we have a broken ls. This can happen
915 # if, for instance, CONFIG_SHELL is bash and it inherits a
916 # broken ls alias from the environment. This has actually
917 # happened. Such a system could not be considered "sane".
918 AC_MSG_ERROR([ls -t appears to fail. Make sure there is not a broken
919 alias in your environment])
920 fi
921 if test "$[2]" = conftest.file || test $am_try -eq 2; then
922 break
923 fi
924 # Just in case.
925 sleep 1
926 am_has_slept=yes
927 done
928 test "$[2]" = conftest.file
929 )
930 then
931 # Ok.
932 :
933 else
934 AC_MSG_ERROR([newly created file is older than distributed files!
935 Check your system clock])
936 fi
937 AC_MSG_RESULT([yes])
938 # If we didn't sleep, we still need to ensure time stamps of config.status and
939 # generated files are strictly newer.
940 am_sleep_pid=
941 if grep 'slept: no' conftest.file >/dev/null 2>&1; then
942 ( sleep 1 ) &
943 am_sleep_pid=$!
944 fi
945 AC_CONFIG_COMMANDS_PRE(
946 [AC_MSG_CHECKING([that generated files are newer than configure])
947 if test -n "$am_sleep_pid"; then
948 # Hide warnings about reused PIDs.
949 wait $am_sleep_pid 2>/dev/null
950 fi
951 AC_MSG_RESULT([done])])
952 rm -f conftest.file
953 ])
954
955 # Copyright (C) 2009-2020 Free Software Foundation, Inc.
956 #
957 # This file is free software; the Free Software Foundation
958 # gives unlimited permission to copy and/or distribute it,
959 # with or without modifications, as long as this notice is preserved.
960
961 # AM_SILENT_RULES([DEFAULT])
962 # --------------------------
963 # Enable less verbose build rules; with the default set to DEFAULT
964 # ("yes" being less verbose, "no" or empty being verbose).
965 AC_DEFUN([AM_SILENT_RULES],
966 [AC_ARG_ENABLE([silent-rules], [dnl
967 AS_HELP_STRING(
968 [--enable-silent-rules],
969 [less verbose build output (undo: "make V=1")])
970 AS_HELP_STRING(
971 [--disable-silent-rules],
972 [verbose build output (undo: "make V=0")])dnl
973 ])
974 case $enable_silent_rules in @%:@ (((
975 yes) AM_DEFAULT_VERBOSITY=0;;
976 no) AM_DEFAULT_VERBOSITY=1;;
977 *) AM_DEFAULT_VERBOSITY=m4_if([$1], [yes], [0], [1]);;
978 esac
979 dnl
980 dnl A few 'make' implementations (e.g., NonStop OS and NextStep)
981 dnl do not support nested variable expansions.
982 dnl See automake bug#9928 and bug#10237.
983 am_make=${MAKE-make}
984 AC_CACHE_CHECK([whether $am_make supports nested variables],
985 [am_cv_make_support_nested_variables],
986 [if AS_ECHO([['TRUE=$(BAR$(V))
987 BAR0=false
988 BAR1=true
989 V=1
990 am__doit:
991 @$(TRUE)
992 .PHONY: am__doit']]) | $am_make -f - >/dev/null 2>&1; then
993 am_cv_make_support_nested_variables=yes
994 else
995 am_cv_make_support_nested_variables=no
996 fi])
997 if test $am_cv_make_support_nested_variables = yes; then
998 dnl Using '$V' instead of '$(V)' breaks IRIX make.
999 AM_V='$(V)'
1000 AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
1001 else
1002 AM_V=$AM_DEFAULT_VERBOSITY
1003 AM_DEFAULT_V=$AM_DEFAULT_VERBOSITY
1004 fi
1005 AC_SUBST([AM_V])dnl
1006 AM_SUBST_NOTMAKE([AM_V])dnl
1007 AC_SUBST([AM_DEFAULT_V])dnl
1008 AM_SUBST_NOTMAKE([AM_DEFAULT_V])dnl
1009 AC_SUBST([AM_DEFAULT_VERBOSITY])dnl
1010 AM_BACKSLASH='\'
1011 AC_SUBST([AM_BACKSLASH])dnl
1012 _AM_SUBST_NOTMAKE([AM_BACKSLASH])dnl
1013 ])
1014
1015 # Copyright (C) 2001-2020 Free Software Foundation, Inc.
1016 #
1017 # This file is free software; the Free Software Foundation
1018 # gives unlimited permission to copy and/or distribute it,
1019 # with or without modifications, as long as this notice is preserved.
1020
1021 # AM_PROG_INSTALL_STRIP
1022 # ---------------------
1023 # One issue with vendor 'install' (even GNU) is that you can't
1024 # specify the program used to strip binaries. This is especially
1025 # annoying in cross-compiling environments, where the build's strip
1026 # is unlikely to handle the host's binaries.
1027 # Fortunately install-sh will honor a STRIPPROG variable, so we
1028 # always use install-sh in "make install-strip", and initialize
1029 # STRIPPROG with the value of the STRIP variable (set by the user).
1030 AC_DEFUN([AM_PROG_INSTALL_STRIP],
1031 [AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
1032 # Installed binaries are usually stripped using 'strip' when the user
1033 # run "make install-strip". However 'strip' might not be the right
1034 # tool to use in cross-compilation environments, therefore Automake
1035 # will honor the 'STRIP' environment variable to overrule this program.
1036 dnl Don't test for $cross_compiling = yes, because it might be 'maybe'.
1037 if test "$cross_compiling" != no; then
1038 AC_CHECK_TOOL([STRIP], [strip], :)
1039 fi
1040 INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
1041 AC_SUBST([INSTALL_STRIP_PROGRAM])])
1042
1043 # Copyright (C) 2006-2020 Free Software Foundation, Inc.
1044 #
1045 # This file is free software; the Free Software Foundation
1046 # gives unlimited permission to copy and/or distribute it,
1047 # with or without modifications, as long as this notice is preserved.
1048
1049 # _AM_SUBST_NOTMAKE(VARIABLE)
1050 # ---------------------------
1051 # Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in.
1052 # This macro is traced by Automake.
1053 AC_DEFUN([_AM_SUBST_NOTMAKE])
1054
1055 # AM_SUBST_NOTMAKE(VARIABLE)
1056 # --------------------------
1057 # Public sister of _AM_SUBST_NOTMAKE.
1058 AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
1059
1060 # Check how to create a tarball. -*- Autoconf -*-
1061
1062 # Copyright (C) 2004-2020 Free Software Foundation, Inc.
1063 #
1064 # This file is free software; the Free Software Foundation
1065 # gives unlimited permission to copy and/or distribute it,
1066 # with or without modifications, as long as this notice is preserved.
1067
1068 # _AM_PROG_TAR(FORMAT)
1069 # --------------------
1070 # Check how to create a tarball in format FORMAT.
1071 # FORMAT should be one of 'v7', 'ustar', or 'pax'.
1072 #
1073 # Substitute a variable $(am__tar) that is a command
1074 # writing to stdout a FORMAT-tarball containing the directory
1075 # $tardir.
1076 # tardir=directory && $(am__tar) > result.tar
1077 #
1078 # Substitute a variable $(am__untar) that extract such
1079 # a tarball read from stdin.
1080 # $(am__untar) < result.tar
1081 #
1082 AC_DEFUN([_AM_PROG_TAR],
1083 [# Always define AMTAR for backward compatibility. Yes, it's still used
1084 # in the wild :-( We should find a proper way to deprecate it ...
1085 AC_SUBST([AMTAR], ['$${TAR-tar}'])
1086
1087 # We'll loop over all known methods to create a tar archive until one works.
1088 _am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
1089
1090 m4_if([$1], [v7],
1091 [am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'],
1092
1093 [m4_case([$1],
1094 [ustar],
1095 [# The POSIX 1988 'ustar' format is defined with fixed-size fields.
1096 # There is notably a 21 bits limit for the UID and the GID. In fact,
1097 # the 'pax' utility can hang on bigger UID/GID (see automake bug#8343
1098 # and bug#13588).
1099 am_max_uid=2097151 # 2^21 - 1
1100 am_max_gid=$am_max_uid
1101 # The $UID and $GID variables are not portable, so we need to resort
1102 # to the POSIX-mandated id(1) utility. Errors in the 'id' calls
1103 # below are definitely unexpected, so allow the users to see them
1104 # (that is, avoid stderr redirection).
1105 am_uid=`id -u || echo unknown`
1106 am_gid=`id -g || echo unknown`
1107 AC_MSG_CHECKING([whether UID '$am_uid' is supported by ustar format])
1108 if test $am_uid -le $am_max_uid; then
1109 AC_MSG_RESULT([yes])
1110 else
1111 AC_MSG_RESULT([no])
1112 _am_tools=none
1113 fi
1114 AC_MSG_CHECKING([whether GID '$am_gid' is supported by ustar format])
1115 if test $am_gid -le $am_max_gid; then
1116 AC_MSG_RESULT([yes])
1117 else
1118 AC_MSG_RESULT([no])
1119 _am_tools=none
1120 fi],
1121
1122 [pax],
1123 [],
1124
1125 [m4_fatal([Unknown tar format])])
1126
1127 AC_MSG_CHECKING([how to create a $1 tar archive])
1128
1129 # Go ahead even if we have the value already cached. We do so because we
1130 # need to set the values for the 'am__tar' and 'am__untar' variables.
1131 _am_tools=${am_cv_prog_tar_$1-$_am_tools}
1132
1133 for _am_tool in $_am_tools; do
1134 case $_am_tool in
1135 gnutar)
1136 for _am_tar in tar gnutar gtar; do
1137 AM_RUN_LOG([$_am_tar --version]) && break
1138 done
1139 am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"'
1140 am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"'
1141 am__untar="$_am_tar -xf -"
1142 ;;
1143 plaintar)
1144 # Must skip GNU tar: if it does not support --format= it doesn't create
1145 # ustar tarball either.
1146 (tar --version) >/dev/null 2>&1 && continue
1147 am__tar='tar chf - "$$tardir"'
1148 am__tar_='tar chf - "$tardir"'
1149 am__untar='tar xf -'
1150 ;;
1151 pax)
1152 am__tar='pax -L -x $1 -w "$$tardir"'
1153 am__tar_='pax -L -x $1 -w "$tardir"'
1154 am__untar='pax -r'
1155 ;;
1156 cpio)
1157 am__tar='find "$$tardir" -print | cpio -o -H $1 -L'
1158 am__tar_='find "$tardir" -print | cpio -o -H $1 -L'
1159 am__untar='cpio -i -H $1 -d'
1160 ;;
1161 none)
1162 am__tar=false
1163 am__tar_=false
1164 am__untar=false
1165 ;;
1166 esac
1167
1168 # If the value was cached, stop now. We just wanted to have am__tar
1169 # and am__untar set.
1170 test -n "${am_cv_prog_tar_$1}" && break
1171
1172 # tar/untar a dummy directory, and stop if the command works.
1173 rm -rf conftest.dir
1174 mkdir conftest.dir
1175 echo GrepMe > conftest.dir/file
1176 AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar])
1177 rm -rf conftest.dir
1178 if test -s conftest.tar; then
1179 AM_RUN_LOG([$am__untar <conftest.tar])
1180 AM_RUN_LOG([cat conftest.dir/file])
1181 grep GrepMe conftest.dir/file >/dev/null 2>&1 && break
1182 fi
1183 done
1184 rm -rf conftest.dir
1185
1186 AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])
1187 AC_MSG_RESULT([$am_cv_prog_tar_$1])])
1188
1189 AC_SUBST([am__tar])
1190 AC_SUBST([am__untar])
1191 ]) # _AM_PROG_TAR
1192
1193 m4_include([aclocal/acinclude.m4])
1194 m4_include([aclocal/acx_pthread.m4])
1195 m4_include([aclocal/ax_path_milter.m4])
1196 m4_include([aclocal/dirfd.m4])
1197 m4_include([aclocal/eilseq.m4])
1198 m4_include([aclocal/eoverflow.m4])