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ADT arm-eh ast-experimental cleanup-dtors enum forall-pointer-decay jacob/cs343-translation jenkins-sandbox new-ast new-ast-unique-expr pthread-emulation qualifiedEnum

Last change on this file since 055b562 was 38d12e7, checked in by Thierry Delisle <tdelisle@…>, 7 years ago
Adjusted makefiles to use libtool
Property mode set to `100644`
File size: 42.1 KB

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514	AC_REQUIRE([AM_PROG_INSTALL_STRIP])dnl
515	AC_REQUIRE([AC_PROG_MKDIR_P])dnl
516	# For better backward compatibility. To be removed once Automake 1.9.x
517	# dies out for good. For more background, see:
518	# <http://lists.gnu.org/archive/html/automake/2012-07/msg00001.html>
519	# <http://lists.gnu.org/archive/html/automake/2012-07/msg00014.html>
520	AC_SUBST([mkdir_p], ['$(MKDIR_P)'])
521	# We need awk for the "check" target (and possibly the TAP driver). The
522	# system "awk" is bad on some platforms.
523	AC_REQUIRE([AC_PROG_AWK])dnl
524	AC_REQUIRE([AC_PROG_MAKE_SET])dnl
525	AC_REQUIRE([AM_SET_LEADING_DOT])dnl
526	_AM_IF_OPTION([tar-ustar], [_AM_PROG_TAR([ustar])],
527	[_AM_IF_OPTION([tar-pax], [_AM_PROG_TAR([pax])],
528	[_AM_PROG_TAR([v7])])])
529	_AM_IF_OPTION([no-dependencies],,
530	[AC_PROVIDE_IFELSE([AC_PROG_CC],
531	[_AM_DEPENDENCIES([CC])],
532	[m4_define([AC_PROG_CC],
533	m4_defn([AC_PROG_CC])[_AM_DEPENDENCIES([CC])])])dnl
534	AC_PROVIDE_IFELSE([AC_PROG_CXX],
535	[_AM_DEPENDENCIES([CXX])],
536	[m4_define([AC_PROG_CXX],
537	m4_defn([AC_PROG_CXX])[_AM_DEPENDENCIES([CXX])])])dnl
538	AC_PROVIDE_IFELSE([AC_PROG_OBJC],
539	[_AM_DEPENDENCIES([OBJC])],
540	[m4_define([AC_PROG_OBJC],
541	m4_defn([AC_PROG_OBJC])[_AM_DEPENDENCIES([OBJC])])])dnl
542	AC_PROVIDE_IFELSE([AC_PROG_OBJCXX],
543	[_AM_DEPENDENCIES([OBJCXX])],
544	[m4_define([AC_PROG_OBJCXX],
545	m4_defn([AC_PROG_OBJCXX])[_AM_DEPENDENCIES([OBJCXX])])])dnl
546	])
547	AC_REQUIRE([AM_SILENT_RULES])dnl
548	dnl The testsuite driver may need to know about EXEEXT, so add the
549	dnl 'am__EXEEXT' conditional if _AM_COMPILER_EXEEXT was seen. This
550	dnl macro is hooked onto _AC_COMPILER_EXEEXT early, see below.
551	AC_CONFIG_COMMANDS_PRE(dnl
552	[m4_provide_if([_AM_COMPILER_EXEEXT],
553	[AM_CONDITIONAL([am__EXEEXT], [test -n "$EXEEXT"])])])dnl
554
555	# POSIX will say in a future version that running "rm -f" with no argument
556	# is OK; and we want to be able to make that assumption in our Makefile
557	# recipes. So use an aggressive probe to check that the usage we want is
558	# actually supported "in the wild" to an acceptable degree.
559	# See automake bug#10828.
560	# To make any issue more visible, cause the running configure to be aborted
561	# by default if the 'rm' program in use doesn't match our expectations; the
562	# user can still override this though.
563	if rm -f && rm -fr && rm -rf; then : OK; else
564	cat >&2 <<'END'
565	Oops!
566
567	Your 'rm' program seems unable to run without file operands specified
568	on the command line, even when the '-f' option is present. This is contrary
569	to the behaviour of most rm programs out there, and not conforming with
570	the upcoming POSIX standard: <http://austingroupbugs.net/view.php?id=542>
571
572	Please tell bug-automake@gnu.org about your system, including the value
573	of your $PATH and any error possibly output before this message. This
574	can help us improve future automake versions.
575
576	END
577	if test x"$ACCEPT_INFERIOR_RM_PROGRAM" = x"yes"; then
578	echo 'Configuration will proceed anyway, since you have set the' >&2
579	echo 'ACCEPT_INFERIOR_RM_PROGRAM variable to "yes"' >&2
580	echo >&2
581	else
582	cat >&2 <<'END'
583	Aborting the configuration process, to ensure you take notice of the issue.
584
585	You can download and install GNU coreutils to get an 'rm' implementation
586	that behaves properly: <http://www.gnu.org/software/coreutils/>.
587
588	If you want to complete the configuration process using your problematic
589	'rm' anyway, export the environment variable ACCEPT_INFERIOR_RM_PROGRAM
590	to "yes", and re-run configure.
591
592	END
593	AC_MSG_ERROR([Your 'rm' program is bad, sorry.])
594	fi
595	fi
596	dnl The trailing newline in this macro's definition is deliberate, for
597	dnl backward compatibility and to allow trailing 'dnl'-style comments
598	dnl after the AM_INIT_AUTOMAKE invocation. See automake bug#16841.
599	])
600
601	dnl Hook into '_AC_COMPILER_EXEEXT' early to learn its expansion. Do not
602	dnl add the conditional right here, as _AC_COMPILER_EXEEXT may be further
603	dnl mangled by Autoconf and run in a shell conditional statement.
604	m4_define([_AC_COMPILER_EXEEXT],
605	m4_defn([_AC_COMPILER_EXEEXT])[m4_provide([_AM_COMPILER_EXEEXT])])
606
607	# When config.status generates a header, we must update the stamp-h file.
608	# This file resides in the same directory as the config header
609	# that is generated. The stamp files are numbered to have different names.
610
611	# Autoconf calls _AC_AM_CONFIG_HEADER_HOOK (when defined) in the
612	# loop where config.status creates the headers, so we can generate
613	# our stamp files there.
614	AC_DEFUN([_AC_AM_CONFIG_HEADER_HOOK],
615	[# Compute $1's index in $config_headers.
616	_am_arg=$1
617	_am_stamp_count=1
618	for _am_header in $config_headers :; do
619	case $_am_header in
620	$_am_arg \| $_am_arg:* )
621	break ;;
622	* )
623	_am_stamp_count=`expr $_am_stamp_count + 1` ;;
624	esac
625	done
626	echo "timestamp for $_am_arg" >`AS_DIRNAME(["$_am_arg"])`/stamp-h[]$_am_stamp_count])
627
628	# Copyright (C) 2001-2014 Free Software Foundation, Inc.
629	#
630	# This file is free software; the Free Software Foundation
631	# gives unlimited permission to copy and/or distribute it,
632	# with or without modifications, as long as this notice is preserved.
633
634	# AM_PROG_INSTALL_SH
635	# ------------------
636	# Define $install_sh.
637	AC_DEFUN([AM_PROG_INSTALL_SH],
638	[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
639	if test x"${install_sh+set}" != xset; then
640	case $am_aux_dir in
641	\ \| \ )
642	install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
643	*)
644	install_sh="\${SHELL} $am_aux_dir/install-sh"
645	esac
646	fi
647	AC_SUBST([install_sh])])
648
649	# Copyright (C) 2003-2014 Free Software Foundation, Inc.
650	#
651	# This file is free software; the Free Software Foundation
652	# gives unlimited permission to copy and/or distribute it,
653	# with or without modifications, as long as this notice is preserved.
654
655	# Check whether the underlying file-system supports filenames
656	# with a leading dot. For instance MS-DOS doesn't.
657	AC_DEFUN([AM_SET_LEADING_DOT],
658	[rm -rf .tst 2>/dev/null
659	mkdir .tst 2>/dev/null
660	if test -d .tst; then
661	am__leading_dot=.
662	else
663	am__leading_dot=_
664	fi
665	rmdir .tst 2>/dev/null
666	AC_SUBST([am__leading_dot])])
667
668	# Check to see how 'make' treats includes. -- Autoconf --
669
670	# Copyright (C) 2001-2014 Free Software Foundation, Inc.
671	#
672	# This file is free software; the Free Software Foundation
673	# gives unlimited permission to copy and/or distribute it,
674	# with or without modifications, as long as this notice is preserved.
675
676	# AM_MAKE_INCLUDE()
677	# -----------------
678	# Check to see how make treats includes.
679	AC_DEFUN([AM_MAKE_INCLUDE],
680	[am_make=${MAKE-make}
681	cat > confinc << 'END'
682	am__doit:
683	@echo this is the am__doit target
684	.PHONY: am__doit
685	END
686	# If we don't find an include directive, just comment out the code.
687	AC_MSG_CHECKING([for style of include used by $am_make])
688	am__include="#"
689	am__quote=
690	_am_result=none
691	# First try GNU make style include.
692	echo "include confinc" > confmf
693	# Ignore all kinds of additional output from 'make'.
694	case `$am_make -s -f confmf 2> /dev/null` in #(
695	the\ am__doit\ target)
696	am__include=include
697	am__quote=
698	_am_result=GNU
699	;;
700	esac
701	# Now try BSD make style include.
702	if test "$am__include" = "#"; then
703	echo '.include "confinc"' > confmf
704	case `$am_make -s -f confmf 2> /dev/null` in #(
705	the\ am__doit\ target)
706	am__include=.include
707	am__quote="\""
708	_am_result=BSD
709	;;
710	esac
711	fi
712	AC_SUBST([am__include])
713	AC_SUBST([am__quote])
714	AC_MSG_RESULT([$_am_result])
715	rm -f confinc confmf
716	])
717
718	# Fake the existence of programs that GNU maintainers use. -- Autoconf --
719
720	# Copyright (C) 1997-2014 Free Software Foundation, Inc.
721	#
722	# This file is free software; the Free Software Foundation
723	# gives unlimited permission to copy and/or distribute it,
724	# with or without modifications, as long as this notice is preserved.
725
726	# AM_MISSING_PROG(NAME, PROGRAM)
727	# ------------------------------
728	AC_DEFUN([AM_MISSING_PROG],
729	[AC_REQUIRE([AM_MISSING_HAS_RUN])
730	$1=${$1-"${am_missing_run}$2"}
731	AC_SUBST($1)])
732
733	# AM_MISSING_HAS_RUN
734	# ------------------
735	# Define MISSING if not defined so far and test if it is modern enough.
736	# If it is, set am_missing_run to use it, otherwise, to nothing.
737	AC_DEFUN([AM_MISSING_HAS_RUN],
738	[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
739	AC_REQUIRE_AUX_FILE([missing])dnl
740	if test x"${MISSING+set}" != xset; then
741	case $am_aux_dir in
742	\ \| \ )
743	MISSING="\${SHELL} \"$am_aux_dir/missing\"" ;;
744	*)
745	MISSING="\${SHELL} $am_aux_dir/missing" ;;
746	esac
747	fi
748	# Use eval to expand $SHELL
749	if eval "$MISSING --is-lightweight"; then
750	am_missing_run="$MISSING "
751	else
752	am_missing_run=
753	AC_MSG_WARN(['missing' script is too old or missing])
754	fi
755	])
756
757	# Helper functions for option handling. -- Autoconf --
758
759	# Copyright (C) 2001-2014 Free Software Foundation, Inc.
760	#
761	# This file is free software; the Free Software Foundation
762	# gives unlimited permission to copy and/or distribute it,
763	# with or without modifications, as long as this notice is preserved.
764
765	# _AM_MANGLE_OPTION(NAME)
766	# -----------------------
767	AC_DEFUN([_AM_MANGLE_OPTION],
768	[[_AM_OPTION_]m4_bpatsubst($1, [[^a-zA-Z0-9_]], [_])])
769
770	# _AM_SET_OPTION(NAME)
771	# --------------------
772	# Set option NAME. Presently that only means defining a flag for this option.
773	AC_DEFUN([_AM_SET_OPTION],
774	[m4_define(_AM_MANGLE_OPTION([$1]), [1])])
775
776	# _AM_SET_OPTIONS(OPTIONS)
777	# ------------------------
778	# OPTIONS is a space-separated list of Automake options.
779	AC_DEFUN([_AM_SET_OPTIONS],
780	[m4_foreach_w([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])])
781
782	# _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET])
783	# -------------------------------------------
784	# Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
785	AC_DEFUN([_AM_IF_OPTION],
786	[m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])
787
788	# Copyright (C) 1999-2014 Free Software Foundation, Inc.
789	#
790	# This file is free software; the Free Software Foundation
791	# gives unlimited permission to copy and/or distribute it,
792	# with or without modifications, as long as this notice is preserved.
793
794	# _AM_PROG_CC_C_O
795	# ---------------
796	# Like AC_PROG_CC_C_O, but changed for automake. We rewrite AC_PROG_CC
797	# to automatically call this.
798	AC_DEFUN([_AM_PROG_CC_C_O],
799	[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
800	AC_REQUIRE_AUX_FILE([compile])dnl
801	AC_LANG_PUSH([C])dnl
802	AC_CACHE_CHECK(
803	[whether $CC understands -c and -o together],
804	[am_cv_prog_cc_c_o],
805	[AC_LANG_CONFTEST([AC_LANG_PROGRAM([])])
806	# Make sure it works both with $CC and with simple cc.
807	# Following AC_PROG_CC_C_O, we do the test twice because some
808	# compilers refuse to overwrite an existing .o file with -o,
809	# though they will create one.
810	am_cv_prog_cc_c_o=yes
811	for am_i in 1 2; do
812	if AM_RUN_LOG([$CC -c conftest.$ac_ext -o conftest2.$ac_objext]) \
813	&& test -f conftest2.$ac_objext; then
814	: OK
815	else
816	am_cv_prog_cc_c_o=no
817	break
818	fi
819	done
820	rm -f core conftest*
821	unset am_i])
822	if test "$am_cv_prog_cc_c_o" != yes; then
823	# Losing compiler, so override with the script.
824	# FIXME: It is wrong to rewrite CC.
825	# But if we don't then we get into trouble of one sort or another.
826	# A longer-term fix would be to have automake use am__CC in this case,
827	# and then we could set am__CC="\$(top_srcdir)/compile \$(CC)"
828	CC="$am_aux_dir/compile $CC"
829	fi
830	AC_LANG_POP([C])])
831
832	# For backward compatibility.
833	AC_DEFUN_ONCE([AM_PROG_CC_C_O], [AC_REQUIRE([AC_PROG_CC])])
834
835	# Copyright (C) 2001-2014 Free Software Foundation, Inc.
836	#
837	# This file is free software; the Free Software Foundation
838	# gives unlimited permission to copy and/or distribute it,
839	# with or without modifications, as long as this notice is preserved.
840
841	# AM_RUN_LOG(COMMAND)
842	# -------------------
843	# Run COMMAND, save the exit status in ac_status, and log it.
844	# (This has been adapted from Autoconf's _AC_RUN_LOG macro.)
845	AC_DEFUN([AM_RUN_LOG],
846	[{ echo "$as_me:$LINENO: $1" >&AS_MESSAGE_LOG_FD
847	($1) >&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD
848	ac_status=$?
849	echo "$as_me:$LINENO: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
850	(exit $ac_status); }])
851
852	# Check to make sure that the build environment is sane. -- Autoconf --
853
854	# Copyright (C) 1996-2014 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.
859
860	# AM_SANITY_CHECK
861	# ---------------
862	AC_DEFUN([AM_SANITY_CHECK],
863	[AC_MSG_CHECKING([whether build environment is sane])
864	# Reject unsafe characters in $srcdir or the absolute working directory
865	# name. Accept space and tab only in the latter.
866	am_lf='
867	'
868	case `pwd` in
869	[[\\\"\#\$\&\'\`$am_lf]])
870	AC_MSG_ERROR([unsafe absolute working directory name]);;
871	esac
872	case $srcdir in
873	[[\\\"\#\$\&\'\`$am_lf\ \ ]])
874	AC_MSG_ERROR([unsafe srcdir value: '$srcdir']);;
875	esac
876
877	# Do 'set' in a subshell so we don't clobber the current shell's
878	# arguments. Must try -L first in case configure is actually a
879	# symlink; some systems play weird games with the mod time of symlinks
880	# (eg FreeBSD returns the mod time of the symlink's containing
881	# directory).
882	if (
883	am_has_slept=no
884	for am_try in 1 2; do
885	echo "timestamp, slept: $am_has_slept" > conftest.file
886	set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
887	if test "$[*]" = "X"; then
888	# -L didn't work.
889	set X `ls -t "$srcdir/configure" conftest.file`
890	fi
891	if test "$[*]" != "X $srcdir/configure conftest.file" \
892	&& test "$[*]" != "X conftest.file $srcdir/configure"; then
893
894	# If neither matched, then we have a broken ls. This can happen
895	# if, for instance, CONFIG_SHELL is bash and it inherits a
896	# broken ls alias from the environment. This has actually
897	# happened. Such a system could not be considered "sane".
898	AC_MSG_ERROR([ls -t appears to fail. Make sure there is not a broken
899	alias in your environment])
900	fi
901	if test "$[2]" = conftest.file \|\| test $am_try -eq 2; then
902	break
903	fi
904	# Just in case.
905	sleep 1
906	am_has_slept=yes
907	done
908	test "$[2]" = conftest.file
909	)
910	then
911	# Ok.
912	:
913	else
914	AC_MSG_ERROR([newly created file is older than distributed files!
915	Check your system clock])
916	fi
917	AC_MSG_RESULT([yes])
918	# If we didn't sleep, we still need to ensure time stamps of config.status and
919	# generated files are strictly newer.
920	am_sleep_pid=
921	if grep 'slept: no' conftest.file >/dev/null 2>&1; then
922	( sleep 1 ) &
923	am_sleep_pid=$!
924	fi
925	AC_CONFIG_COMMANDS_PRE(
926	[AC_MSG_CHECKING([that generated files are newer than configure])
927	if test -n "$am_sleep_pid"; then
928	# Hide warnings about reused PIDs.
929	wait $am_sleep_pid 2>/dev/null
930	fi
931	AC_MSG_RESULT([done])])
932	rm -f conftest.file
933	])
934
935	# Copyright (C) 2009-2014 Free Software Foundation, Inc.
936	#
937	# This file is free software; the Free Software Foundation
938	# gives unlimited permission to copy and/or distribute it,
939	# with or without modifications, as long as this notice is preserved.
940
941	# AM_SILENT_RULES([DEFAULT])
942	# --------------------------
943	# Enable less verbose build rules; with the default set to DEFAULT
944	# ("yes" being less verbose, "no" or empty being verbose).
945	AC_DEFUN([AM_SILENT_RULES],
946	[AC_ARG_ENABLE([silent-rules], [dnl
947	AS_HELP_STRING(
948	[--enable-silent-rules],
949	[less verbose build output (undo: "make V=1")])
950	AS_HELP_STRING(
951	[--disable-silent-rules],
952	[verbose build output (undo: "make V=0")])dnl
953	])
954	case $enable_silent_rules in @%:@ (((
955	yes) AM_DEFAULT_VERBOSITY=0;;
956	no) AM_DEFAULT_VERBOSITY=1;;
957	*) AM_DEFAULT_VERBOSITY=m4_if([$1], [yes], [0], [1]);;
958	esac
959	dnl
960	dnl A few 'make' implementations (e.g., NonStop OS and NextStep)
961	dnl do not support nested variable expansions.
962	dnl See automake bug#9928 and bug#10237.
963	am_make=${MAKE-make}
964	AC_CACHE_CHECK([whether $am_make supports nested variables],
965	[am_cv_make_support_nested_variables],
966	[if AS_ECHO([['TRUE=$(BAR$(V))
967	BAR0=false
968	BAR1=true
969	V=1
970	am__doit:
971	@$(TRUE)
972	.PHONY: am__doit']]) \| $am_make -f - >/dev/null 2>&1; then
973	am_cv_make_support_nested_variables=yes
974	else
975	am_cv_make_support_nested_variables=no
976	fi])
977	if test $am_cv_make_support_nested_variables = yes; then
978	dnl Using '$V' instead of '$(V)' breaks IRIX make.
979	AM_V='$(V)'
980	AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
981	else
982	AM_V=$AM_DEFAULT_VERBOSITY
983	AM_DEFAULT_V=$AM_DEFAULT_VERBOSITY
984	fi
985	AC_SUBST([AM_V])dnl
986	AM_SUBST_NOTMAKE([AM_V])dnl
987	AC_SUBST([AM_DEFAULT_V])dnl
988	AM_SUBST_NOTMAKE([AM_DEFAULT_V])dnl
989	AC_SUBST([AM_DEFAULT_VERBOSITY])dnl
990	AM_BACKSLASH='\'
991	AC_SUBST([AM_BACKSLASH])dnl
992	_AM_SUBST_NOTMAKE([AM_BACKSLASH])dnl
993	])
994
995	# Copyright (C) 2001-2014 Free Software Foundation, Inc.
996	#
997	# This file is free software; the Free Software Foundation
998	# gives unlimited permission to copy and/or distribute it,
999	# with or without modifications, as long as this notice is preserved.
1000
1001	# AM_PROG_INSTALL_STRIP
1002	# ---------------------
1003	# One issue with vendor 'install' (even GNU) is that you can't
1004	# specify the program used to strip binaries. This is especially
1005	# annoying in cross-compiling environments, where the build's strip
1006	# is unlikely to handle the host's binaries.
1007	# Fortunately install-sh will honor a STRIPPROG variable, so we
1008	# always use install-sh in "make install-strip", and initialize
1009	# STRIPPROG with the value of the STRIP variable (set by the user).
1010	AC_DEFUN([AM_PROG_INSTALL_STRIP],
1011	[AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
1012	# Installed binaries are usually stripped using 'strip' when the user
1013	# run "make install-strip". However 'strip' might not be the right
1014	# tool to use in cross-compilation environments, therefore Automake
1015	# will honor the 'STRIP' environment variable to overrule this program.
1016	dnl Don't test for $cross_compiling = yes, because it might be 'maybe'.
1017	if test "$cross_compiling" != no; then
1018	AC_CHECK_TOOL([STRIP], [strip], :)
1019	fi
1020	INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
1021	AC_SUBST([INSTALL_STRIP_PROGRAM])])
1022
1023	# Copyright (C) 2006-2014 Free Software Foundation, Inc.
1024	#
1025	# This file is free software; the Free Software Foundation
1026	# gives unlimited permission to copy and/or distribute it,
1027	# with or without modifications, as long as this notice is preserved.
1028
1029	# _AM_SUBST_NOTMAKE(VARIABLE)
1030	# ---------------------------
1031	# Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in.
1032	# This macro is traced by Automake.
1033	AC_DEFUN([_AM_SUBST_NOTMAKE])
1034
1035	# AM_SUBST_NOTMAKE(VARIABLE)
1036	# --------------------------
1037	# Public sister of _AM_SUBST_NOTMAKE.
1038	AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
1039
1040	# Check how to create a tarball. -- Autoconf --
1041
1042	# Copyright (C) 2004-2014 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.
1047
1048	# _AM_PROG_TAR(FORMAT)
1049	# --------------------
1050	# Check how to create a tarball in format FORMAT.
1051	# FORMAT should be one of 'v7', 'ustar', or 'pax'.
1052	#
1053	# Substitute a variable $(am__tar) that is a command
1054	# writing to stdout a FORMAT-tarball containing the directory
1055	# $tardir.
1056	# tardir=directory && $(am__tar) > result.tar
1057	#
1058	# Substitute a variable $(am__untar) that extract such
1059	# a tarball read from stdin.
1060	# $(am__untar) < result.tar
1061	#
1062	AC_DEFUN([_AM_PROG_TAR],
1063	[# Always define AMTAR for backward compatibility. Yes, it's still used
1064	# in the wild :-( We should find a proper way to deprecate it ...
1065	AC_SUBST([AMTAR], ['$${TAR-tar}'])
1066
1067	# We'll loop over all known methods to create a tar archive until one works.
1068	_am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
1069
1070	m4_if([$1], [v7],
1071	[am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'],
1072
1073	[m4_case([$1],
1074	[ustar],
1075	[# The POSIX 1988 'ustar' format is defined with fixed-size fields.
1076	# There is notably a 21 bits limit for the UID and the GID. In fact,
1077	# the 'pax' utility can hang on bigger UID/GID (see automake bug#8343
1078	# and bug#13588).
1079	am_max_uid=2097151 # 2^21 - 1
1080	am_max_gid=$am_max_uid
1081	# The $UID and $GID variables are not portable, so we need to resort
1082	# to the POSIX-mandated id(1) utility. Errors in the 'id' calls
1083	# below are definitely unexpected, so allow the users to see them
1084	# (that is, avoid stderr redirection).
1085	am_uid=`id -u \|\| echo unknown`
1086	am_gid=`id -g \|\| echo unknown`
1087	AC_MSG_CHECKING([whether UID '$am_uid' is supported by ustar format])
1088	if test $am_uid -le $am_max_uid; then
1089	AC_MSG_RESULT([yes])
1090	else
1091	AC_MSG_RESULT([no])
1092	_am_tools=none
1093	fi
1094	AC_MSG_CHECKING([whether GID '$am_gid' is supported by ustar format])
1095	if test $am_gid -le $am_max_gid; then
1096	AC_MSG_RESULT([yes])
1097	else
1098	AC_MSG_RESULT([no])
1099	_am_tools=none
1100	fi],
1101
1102	[pax],
1103	[],
1104
1105	[m4_fatal([Unknown tar format])])
1106
1107	AC_MSG_CHECKING([how to create a $1 tar archive])
1108
1109	# Go ahead even if we have the value already cached. We do so because we
1110	# need to set the values for the 'am__tar' and 'am__untar' variables.
1111	_am_tools=${am_cv_prog_tar_$1-$_am_tools}
1112
1113	for _am_tool in $_am_tools; do
1114	case $_am_tool in
1115	gnutar)
1116	for _am_tar in tar gnutar gtar; do
1117	AM_RUN_LOG([$_am_tar --version]) && break
1118	done
1119	am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"'
1120	am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"'
1121	am__untar="$_am_tar -xf -"
1122	;;
1123	plaintar)
1124	# Must skip GNU tar: if it does not support --format= it doesn't create
1125	# ustar tarball either.
1126	(tar --version) >/dev/null 2>&1 && continue
1127	am__tar='tar chf - "$$tardir"'
1128	am__tar_='tar chf - "$tardir"'
1129	am__untar='tar xf -'
1130	;;
1131	pax)
1132	am__tar='pax -L -x $1 -w "$$tardir"'
1133	am__tar_='pax -L -x $1 -w "$tardir"'
1134	am__untar='pax -r'
1135	;;
1136	cpio)
1137	am__tar='find "$$tardir" -print \| cpio -o -H $1 -L'
1138	am__tar_='find "$tardir" -print \| cpio -o -H $1 -L'
1139	am__untar='cpio -i -H $1 -d'
1140	;;
1141	none)
1142	am__tar=false
1143	am__tar_=false
1144	am__untar=false
1145	;;
1146	esac
1147
1148	# If the value was cached, stop now. We just wanted to have am__tar
1149	# and am__untar set.
1150	test -n "${am_cv_prog_tar_$1}" && break
1151
1152	# tar/untar a dummy directory, and stop if the command works.
1153	rm -rf conftest.dir
1154	mkdir conftest.dir
1155	echo GrepMe > conftest.dir/file
1156	AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar])
1157	rm -rf conftest.dir
1158	if test -s conftest.tar; then
1159	AM_RUN_LOG([$am__untar <conftest.tar])
1160	AM_RUN_LOG([cat conftest.dir/file])
1161	grep GrepMe conftest.dir/file >/dev/null 2>&1 && break
1162	fi
1163	done
1164	rm -rf conftest.dir
1165
1166	AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])
1167	AC_MSG_RESULT([$am_cv_prog_tar_$1])])
1168
1169	AC_SUBST([am__tar])
1170	AC_SUBST([am__untar])
1171	]) # _AM_PROG_TAR
1172
1173	m4_include([automake/libtool.m4])
1174	m4_include([automake/ltoptions.m4])
1175	m4_include([automake/ltsugar.m4])
1176	m4_include([automake/ltversion.m4])
1177	m4_include([automake/lt~obsolete.m4])

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