aclocal.m4@ 103285

最後變更在這個檔案從103285是 96360,由 vboxsync 提交於 2 年前
libogg, libvorbis: export to OSE
屬性 svn:eol-style 設為 `native` 屬性 svn:keywords 設為 `Author Date Id Revision`
檔案大小: 42.7 KB

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3	# Copyright (C) 1996-2020 Free Software Foundation, Inc.
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5	# This file is free software; the Free Software Foundation
6	# gives unlimited permission to copy and/or distribute it,
7	# with or without modifications, as long as this notice is preserved.
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505	m4_defn([AC_PROG_CC])[_AM_DEPENDENCIES([CC])])])dnl
506	AC_PROVIDE_IFELSE([AC_PROG_CXX],
507	[_AM_DEPENDENCIES([CXX])],
508	[m4_define([AC_PROG_CXX],
509	m4_defn([AC_PROG_CXX])[_AM_DEPENDENCIES([CXX])])])dnl
510	AC_PROVIDE_IFELSE([AC_PROG_OBJC],
511	[_AM_DEPENDENCIES([OBJC])],
512	[m4_define([AC_PROG_OBJC],
513	m4_defn([AC_PROG_OBJC])[_AM_DEPENDENCIES([OBJC])])])dnl
514	AC_PROVIDE_IFELSE([AC_PROG_OBJCXX],
515	[_AM_DEPENDENCIES([OBJCXX])],
516	[m4_define([AC_PROG_OBJCXX],
517	m4_defn([AC_PROG_OBJCXX])[_AM_DEPENDENCIES([OBJCXX])])])dnl
518	])
519	AC_REQUIRE([AM_SILENT_RULES])dnl
520	dnl The testsuite driver may need to know about EXEEXT, so add the
521	dnl 'am__EXEEXT' conditional if _AM_COMPILER_EXEEXT was seen. This
522	dnl macro is hooked onto _AC_COMPILER_EXEEXT early, see below.
523	AC_CONFIG_COMMANDS_PRE(dnl
524	[m4_provide_if([_AM_COMPILER_EXEEXT],
525	[AM_CONDITIONAL([am__EXEEXT], [test -n "$EXEEXT"])])])dnl
526
527	# POSIX will say in a future version that running "rm -f" with no argument
528	# is OK; and we want to be able to make that assumption in our Makefile
529	# recipes. So use an aggressive probe to check that the usage we want is
530	# actually supported "in the wild" to an acceptable degree.
531	# See automake bug#10828.
532	# To make any issue more visible, cause the running configure to be aborted
533	# by default if the 'rm' program in use doesn't match our expectations; the
534	# user can still override this though.
535	if rm -f && rm -fr && rm -rf; then : OK; else
536	cat >&2 <<'END'
537	Oops!
538
539	Your 'rm' program seems unable to run without file operands specified
540	on the command line, even when the '-f' option is present. This is contrary
541	to the behaviour of most rm programs out there, and not conforming with
542	the upcoming POSIX standard: <http://austingroupbugs.net/view.php?id=542>
543
544	Please tell [email protected] about your system, including the value
545	of your $PATH and any error possibly output before this message. This
546	can help us improve future automake versions.
547
548	END
549	if test x"$ACCEPT_INFERIOR_RM_PROGRAM" = x"yes"; then
550	echo 'Configuration will proceed anyway, since you have set the' >&2
551	echo 'ACCEPT_INFERIOR_RM_PROGRAM variable to "yes"' >&2
552	echo >&2
553	else
554	cat >&2 <<'END'
555	Aborting the configuration process, to ensure you take notice of the issue.
556
557	You can download and install GNU coreutils to get an 'rm' implementation
558	that behaves properly: <https://www.gnu.org/software/coreutils/>.
559
560	If you want to complete the configuration process using your problematic
561	'rm' anyway, export the environment variable ACCEPT_INFERIOR_RM_PROGRAM
562	to "yes", and re-run configure.
563
564	END
565	AC_MSG_ERROR([Your 'rm' program is bad, sorry.])
566	fi
567	fi
568	dnl The trailing newline in this macro's definition is deliberate, for
569	dnl backward compatibility and to allow trailing 'dnl'-style comments
570	dnl after the AM_INIT_AUTOMAKE invocation. See automake bug#16841.
571	])
572
573	dnl Hook into '_AC_COMPILER_EXEEXT' early to learn its expansion. Do not
574	dnl add the conditional right here, as _AC_COMPILER_EXEEXT may be further
575	dnl mangled by Autoconf and run in a shell conditional statement.
576	m4_define([_AC_COMPILER_EXEEXT],
577	m4_defn([_AC_COMPILER_EXEEXT])[m4_provide([_AM_COMPILER_EXEEXT])])
578
579	# When config.status generates a header, we must update the stamp-h file.
580	# This file resides in the same directory as the config header
581	# that is generated. The stamp files are numbered to have different names.
582
583	# Autoconf calls _AC_AM_CONFIG_HEADER_HOOK (when defined) in the
584	# loop where config.status creates the headers, so we can generate
585	# our stamp files there.
586	AC_DEFUN([_AC_AM_CONFIG_HEADER_HOOK],
587	[# Compute $1's index in $config_headers.
588	_am_arg=$1
589	_am_stamp_count=1
590	for _am_header in $config_headers :; do
591	case $_am_header in
592	$_am_arg \| $_am_arg:* )
593	break ;;
594	* )
595	_am_stamp_count=`expr $_am_stamp_count + 1` ;;
596	esac
597	done
598	echo "timestamp for $_am_arg" >`AS_DIRNAME(["$_am_arg"])`/stamp-h[]$_am_stamp_count])
599
600	# Copyright (C) 2001-2020 Free Software Foundation, Inc.
601	#
602	# This file is free software; the Free Software Foundation
603	# gives unlimited permission to copy and/or distribute it,
604	# with or without modifications, as long as this notice is preserved.
605
606	# AM_PROG_INSTALL_SH
607	# ------------------
608	# Define $install_sh.
609	AC_DEFUN([AM_PROG_INSTALL_SH],
610	[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
611	if test x"${install_sh+set}" != xset; then
612	case $am_aux_dir in
613	\ \| \ )
614	install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
615	*)
616	install_sh="\${SHELL} $am_aux_dir/install-sh"
617	esac
618	fi
619	AC_SUBST([install_sh])])
620
621	# Copyright (C) 2003-2020 Free Software Foundation, Inc.
622	#
623	# This file is free software; the Free Software Foundation
624	# gives unlimited permission to copy and/or distribute it,
625	# with or without modifications, as long as this notice is preserved.
626
627	# Check whether the underlying file-system supports filenames
628	# with a leading dot. For instance MS-DOS doesn't.
629	AC_DEFUN([AM_SET_LEADING_DOT],
630	[rm -rf .tst 2>/dev/null
631	mkdir .tst 2>/dev/null
632	if test -d .tst; then
633	am__leading_dot=.
634	else
635	am__leading_dot=_
636	fi
637	rmdir .tst 2>/dev/null
638	AC_SUBST([am__leading_dot])])
639
640	# Add --enable-maintainer-mode option to configure. -- Autoconf --
641	# From Jim Meyering
642
643	# Copyright (C) 1996-2020 Free Software Foundation, Inc.
644	#
645	# This file is free software; the Free Software Foundation
646	# gives unlimited permission to copy and/or distribute it,
647	# with or without modifications, as long as this notice is preserved.
648
649	# AM_MAINTAINER_MODE([DEFAULT-MODE])
650	# ----------------------------------
651	# Control maintainer-specific portions of Makefiles.
652	# Default is to disable them, unless 'enable' is passed literally.
653	# For symmetry, 'disable' may be passed as well. Anyway, the user
654	# can override the default with the --enable/--disable switch.
655	AC_DEFUN([AM_MAINTAINER_MODE],
656	[m4_case(m4_default([$1], [disable]),
657	[enable], [m4_define([am_maintainer_other], [disable])],
658	[disable], [m4_define([am_maintainer_other], [enable])],
659	[m4_define([am_maintainer_other], [enable])
660	m4_warn([syntax], [unexpected argument to AM@&t@_MAINTAINER_MODE: $1])])
661	AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
662	dnl maintainer-mode's default is 'disable' unless 'enable' is passed
663	AC_ARG_ENABLE([maintainer-mode],
664	[AS_HELP_STRING([--]am_maintainer_other[-maintainer-mode],
665	am_maintainer_other[ make rules and dependencies not useful
666	(and sometimes confusing) to the casual installer])],
667	[USE_MAINTAINER_MODE=$enableval],
668	[USE_MAINTAINER_MODE=]m4_if(am_maintainer_other, [enable], [no], [yes]))
669	AC_MSG_RESULT([$USE_MAINTAINER_MODE])
670	AM_CONDITIONAL([MAINTAINER_MODE], [test $USE_MAINTAINER_MODE = yes])
671	MAINT=$MAINTAINER_MODE_TRUE
672	AC_SUBST([MAINT])dnl
673	]
674	)
675
676	# Check to see how 'make' treats includes. -- Autoconf --
677
678	# Copyright (C) 2001-2020 Free Software Foundation, Inc.
679	#
680	# This file is free software; the Free Software Foundation
681	# gives unlimited permission to copy and/or distribute it,
682	# with or without modifications, as long as this notice is preserved.
683
684	# AM_MAKE_INCLUDE()
685	# -----------------
686	# Check whether make has an 'include' directive that can support all
687	# the idioms we need for our automatic dependency tracking code.
688	AC_DEFUN([AM_MAKE_INCLUDE],
689	[AC_MSG_CHECKING([whether ${MAKE-make} supports the include directive])
690	cat > confinc.mk << 'END'
691	am__doit:
692	@echo this is the am__doit target >confinc.out
693	.PHONY: am__doit
694	END
695	am__include="#"
696	am__quote=
697	# BSD make does it like this.
698	echo '.include "confinc.mk" # ignored' > confmf.BSD
699	# Other make implementations (GNU, Solaris 10, AIX) do it like this.
700	echo 'include confinc.mk # ignored' > confmf.GNU
701	_am_result=no
702	for s in GNU BSD; do
703	AM_RUN_LOG([${MAKE-make} -f confmf.$s && cat confinc.out])
704	AS_CASE([$?:`cat confinc.out 2>/dev/null`],
705	['0:this is the am__doit target'],
706	[AS_CASE([$s],
707	[BSD], [am__include='.include' am__quote='"'],
708	[am__include='include' am__quote=''])])
709	if test "$am__include" != "#"; then
710	_am_result="yes ($s style)"
711	break
712	fi
713	done
714	rm -f confinc.* confmf.*
715	AC_MSG_RESULT([${_am_result}])
716	AC_SUBST([am__include])])
717	AC_SUBST([am__quote])])
718
719	# Fake the existence of programs that GNU maintainers use. -- Autoconf --
720
721	# Copyright (C) 1997-2020 Free Software Foundation, Inc.
722	#
723	# This file is free software; the Free Software Foundation
724	# gives unlimited permission to copy and/or distribute it,
725	# with or without modifications, as long as this notice is preserved.
726
727	# AM_MISSING_PROG(NAME, PROGRAM)
728	# ------------------------------
729	AC_DEFUN([AM_MISSING_PROG],
730	[AC_REQUIRE([AM_MISSING_HAS_RUN])
731	$1=${$1-"${am_missing_run}$2"}
732	AC_SUBST($1)])
733
734	# AM_MISSING_HAS_RUN
735	# ------------------
736	# Define MISSING if not defined so far and test if it is modern enough.
737	# If it is, set am_missing_run to use it, otherwise, to nothing.
738	AC_DEFUN([AM_MISSING_HAS_RUN],
739	[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
740	AC_REQUIRE_AUX_FILE([missing])dnl
741	if test x"${MISSING+set}" != xset; then
742	MISSING="\${SHELL} '$am_aux_dir/missing'"
743	fi
744	# Use eval to expand $SHELL
745	if eval "$MISSING --is-lightweight"; then
746	am_missing_run="$MISSING "
747	else
748	am_missing_run=
749	AC_MSG_WARN(['missing' script is too old or missing])
750	fi
751	])
752
753	# Helper functions for option handling. -- Autoconf --
754
755	# Copyright (C) 2001-2020 Free Software Foundation, Inc.
756	#
757	# This file is free software; the Free Software Foundation
758	# gives unlimited permission to copy and/or distribute it,
759	# with or without modifications, as long as this notice is preserved.
760
761	# _AM_MANGLE_OPTION(NAME)
762	# -----------------------
763	AC_DEFUN([_AM_MANGLE_OPTION],
764	[[_AM_OPTION_]m4_bpatsubst($1, [[^a-zA-Z0-9_]], [_])])
765
766	# _AM_SET_OPTION(NAME)
767	# --------------------
768	# Set option NAME. Presently that only means defining a flag for this option.
769	AC_DEFUN([_AM_SET_OPTION],
770	[m4_define(_AM_MANGLE_OPTION([$1]), [1])])
771
772	# _AM_SET_OPTIONS(OPTIONS)
773	# ------------------------
774	# OPTIONS is a space-separated list of Automake options.
775	AC_DEFUN([_AM_SET_OPTIONS],
776	[m4_foreach_w([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])])
777
778	# _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET])
779	# -------------------------------------------
780	# Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
781	AC_DEFUN([_AM_IF_OPTION],
782	[m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])
783
784	# Copyright (C) 1999-2020 Free Software Foundation, Inc.
785	#
786	# This file is free software; the Free Software Foundation
787	# gives unlimited permission to copy and/or distribute it,
788	# with or without modifications, as long as this notice is preserved.
789
790	# _AM_PROG_CC_C_O
791	# ---------------
792	# Like AC_PROG_CC_C_O, but changed for automake. We rewrite AC_PROG_CC
793	# to automatically call this.
794	AC_DEFUN([_AM_PROG_CC_C_O],
795	[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
796	AC_REQUIRE_AUX_FILE([compile])dnl
797	AC_LANG_PUSH([C])dnl
798	AC_CACHE_CHECK(
799	[whether $CC understands -c and -o together],
800	[am_cv_prog_cc_c_o],
801	[AC_LANG_CONFTEST([AC_LANG_PROGRAM([])])
802	# Make sure it works both with $CC and with simple cc.
803	# Following AC_PROG_CC_C_O, we do the test twice because some
804	# compilers refuse to overwrite an existing .o file with -o,
805	# though they will create one.
806	am_cv_prog_cc_c_o=yes
807	for am_i in 1 2; do
808	if AM_RUN_LOG([$CC -c conftest.$ac_ext -o conftest2.$ac_objext]) \
809	&& test -f conftest2.$ac_objext; then
810	: OK
811	else
812	am_cv_prog_cc_c_o=no
813	break
814	fi
815	done
816	rm -f core conftest*
817	unset am_i])
818	if test "$am_cv_prog_cc_c_o" != yes; then
819	# Losing compiler, so override with the script.
820	# FIXME: It is wrong to rewrite CC.
821	# But if we don't then we get into trouble of one sort or another.
822	# A longer-term fix would be to have automake use am__CC in this case,
823	# and then we could set am__CC="\$(top_srcdir)/compile \$(CC)"
824	CC="$am_aux_dir/compile $CC"
825	fi
826	AC_LANG_POP([C])])
827
828	# For backward compatibility.
829	AC_DEFUN_ONCE([AM_PROG_CC_C_O], [AC_REQUIRE([AC_PROG_CC])])
830
831	# Copyright (C) 2001-2020 Free Software Foundation, Inc.
832	#
833	# This file is free software; the Free Software Foundation
834	# gives unlimited permission to copy and/or distribute it,
835	# with or without modifications, as long as this notice is preserved.
836
837	# AM_RUN_LOG(COMMAND)
838	# -------------------
839	# Run COMMAND, save the exit status in ac_status, and log it.
840	# (This has been adapted from Autoconf's _AC_RUN_LOG macro.)
841	AC_DEFUN([AM_RUN_LOG],
842	[{ echo "$as_me:$LINENO: $1" >&AS_MESSAGE_LOG_FD
843	($1) >&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD
844	ac_status=$?
845	echo "$as_me:$LINENO: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
846	(exit $ac_status); }])
847
848	# Check to make sure that the build environment is sane. -- Autoconf --
849
850	# Copyright (C) 1996-2020 Free Software Foundation, Inc.
851	#
852	# This file is free software; the Free Software Foundation
853	# gives unlimited permission to copy and/or distribute it,
854	# with or without modifications, as long as this notice is preserved.
855
856	# AM_SANITY_CHECK
857	# ---------------
858	AC_DEFUN([AM_SANITY_CHECK],
859	[AC_MSG_CHECKING([whether build environment is sane])
860	# Reject unsafe characters in $srcdir or the absolute working directory
861	# name. Accept space and tab only in the latter.
862	am_lf='
863	'
864	case `pwd` in
865	[[\\\"\#\$\&\'\`$am_lf]])
866	AC_MSG_ERROR([unsafe absolute working directory name]);;
867	esac
868	case $srcdir in
869	[[\\\"\#\$\&\'\`$am_lf\ \ ]])
870	AC_MSG_ERROR([unsafe srcdir value: '$srcdir']);;
871	esac
872
873	# Do 'set' in a subshell so we don't clobber the current shell's
874	# arguments. Must try -L first in case configure is actually a
875	# symlink; some systems play weird games with the mod time of symlinks
876	# (eg FreeBSD returns the mod time of the symlink's containing
877	# directory).
878	if (
879	am_has_slept=no
880	for am_try in 1 2; do
881	echo "timestamp, slept: $am_has_slept" > conftest.file
882	set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
883	if test "$[*]" = "X"; then
884	# -L didn't work.
885	set X `ls -t "$srcdir/configure" conftest.file`
886	fi
887	if test "$[*]" != "X $srcdir/configure conftest.file" \
888	&& test "$[*]" != "X conftest.file $srcdir/configure"; then
889
890	# If neither matched, then we have a broken ls. This can happen
891	# if, for instance, CONFIG_SHELL is bash and it inherits a
892	# broken ls alias from the environment. This has actually
893	# happened. Such a system could not be considered "sane".
894	AC_MSG_ERROR([ls -t appears to fail. Make sure there is not a broken
895	alias in your environment])
896	fi
897	if test "$[2]" = conftest.file \|\| test $am_try -eq 2; then
898	break
899	fi
900	# Just in case.
901	sleep 1
902	am_has_slept=yes
903	done
904	test "$[2]" = conftest.file
905	)
906	then
907	# Ok.
908	:
909	else
910	AC_MSG_ERROR([newly created file is older than distributed files!
911	Check your system clock])
912	fi
913	AC_MSG_RESULT([yes])
914	# If we didn't sleep, we still need to ensure time stamps of config.status and
915	# generated files are strictly newer.
916	am_sleep_pid=
917	if grep 'slept: no' conftest.file >/dev/null 2>&1; then
918	( sleep 1 ) &
919	am_sleep_pid=$!
920	fi
921	AC_CONFIG_COMMANDS_PRE(
922	[AC_MSG_CHECKING([that generated files are newer than configure])
923	if test -n "$am_sleep_pid"; then
924	# Hide warnings about reused PIDs.
925	wait $am_sleep_pid 2>/dev/null
926	fi
927	AC_MSG_RESULT([done])])
928	rm -f conftest.file
929	])
930
931	# Copyright (C) 2009-2020 Free Software Foundation, Inc.
932	#
933	# This file is free software; the Free Software Foundation
934	# gives unlimited permission to copy and/or distribute it,
935	# with or without modifications, as long as this notice is preserved.
936
937	# AM_SILENT_RULES([DEFAULT])
938	# --------------------------
939	# Enable less verbose build rules; with the default set to DEFAULT
940	# ("yes" being less verbose, "no" or empty being verbose).
941	AC_DEFUN([AM_SILENT_RULES],
942	[AC_ARG_ENABLE([silent-rules], [dnl
943	AS_HELP_STRING(
944	[--enable-silent-rules],
945	[less verbose build output (undo: "make V=1")])
946	AS_HELP_STRING(
947	[--disable-silent-rules],
948	[verbose build output (undo: "make V=0")])dnl
949	])
950	case $enable_silent_rules in @%:@ (((
951	yes) AM_DEFAULT_VERBOSITY=0;;
952	no) AM_DEFAULT_VERBOSITY=1;;
953	*) AM_DEFAULT_VERBOSITY=m4_if([$1], [yes], [0], [1]);;
954	esac
955	dnl
956	dnl A few 'make' implementations (e.g., NonStop OS and NextStep)
957	dnl do not support nested variable expansions.
958	dnl See automake bug#9928 and bug#10237.
959	am_make=${MAKE-make}
960	AC_CACHE_CHECK([whether $am_make supports nested variables],
961	[am_cv_make_support_nested_variables],
962	[if AS_ECHO([['TRUE=$(BAR$(V))
963	BAR0=false
964	BAR1=true
965	V=1
966	am__doit:
967	@$(TRUE)
968	.PHONY: am__doit']]) \| $am_make -f - >/dev/null 2>&1; then
969	am_cv_make_support_nested_variables=yes
970	else
971	am_cv_make_support_nested_variables=no
972	fi])
973	if test $am_cv_make_support_nested_variables = yes; then
974	dnl Using '$V' instead of '$(V)' breaks IRIX make.
975	AM_V='$(V)'
976	AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
977	else
978	AM_V=$AM_DEFAULT_VERBOSITY
979	AM_DEFAULT_V=$AM_DEFAULT_VERBOSITY
980	fi
981	AC_SUBST([AM_V])dnl
982	AM_SUBST_NOTMAKE([AM_V])dnl
983	AC_SUBST([AM_DEFAULT_V])dnl
984	AM_SUBST_NOTMAKE([AM_DEFAULT_V])dnl
985	AC_SUBST([AM_DEFAULT_VERBOSITY])dnl
986	AM_BACKSLASH='\'
987	AC_SUBST([AM_BACKSLASH])dnl
988	_AM_SUBST_NOTMAKE([AM_BACKSLASH])dnl
989	])
990
991	# Copyright (C) 2001-2020 Free Software Foundation, Inc.
992	#
993	# This file is free software; the Free Software Foundation
994	# gives unlimited permission to copy and/or distribute it,
995	# with or without modifications, as long as this notice is preserved.
996
997	# AM_PROG_INSTALL_STRIP
998	# ---------------------
999	# One issue with vendor 'install' (even GNU) is that you can't
1000	# specify the program used to strip binaries. This is especially
1001	# annoying in cross-compiling environments, where the build's strip
1002	# is unlikely to handle the host's binaries.
1003	# Fortunately install-sh will honor a STRIPPROG variable, so we
1004	# always use install-sh in "make install-strip", and initialize
1005	# STRIPPROG with the value of the STRIP variable (set by the user).
1006	AC_DEFUN([AM_PROG_INSTALL_STRIP],
1007	[AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
1008	# Installed binaries are usually stripped using 'strip' when the user
1009	# run "make install-strip". However 'strip' might not be the right
1010	# tool to use in cross-compilation environments, therefore Automake
1011	# will honor the 'STRIP' environment variable to overrule this program.
1012	dnl Don't test for $cross_compiling = yes, because it might be 'maybe'.
1013	if test "$cross_compiling" != no; then
1014	AC_CHECK_TOOL([STRIP], [strip], :)
1015	fi
1016	INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
1017	AC_SUBST([INSTALL_STRIP_PROGRAM])])
1018
1019	# Copyright (C) 2006-2020 Free Software Foundation, Inc.
1020	#
1021	# This file is free software; the Free Software Foundation
1022	# gives unlimited permission to copy and/or distribute it,
1023	# with or without modifications, as long as this notice is preserved.
1024
1025	# _AM_SUBST_NOTMAKE(VARIABLE)
1026	# ---------------------------
1027	# Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in.
1028	# This macro is traced by Automake.
1029	AC_DEFUN([_AM_SUBST_NOTMAKE])
1030
1031	# AM_SUBST_NOTMAKE(VARIABLE)
1032	# --------------------------
1033	# Public sister of _AM_SUBST_NOTMAKE.
1034	AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
1035
1036	# Check how to create a tarball. -- Autoconf --
1037
1038	# Copyright (C) 2004-2020 Free Software Foundation, Inc.
1039	#
1040	# This file is free software; the Free Software Foundation
1041	# gives unlimited permission to copy and/or distribute it,
1042	# with or without modifications, as long as this notice is preserved.
1043
1044	# _AM_PROG_TAR(FORMAT)
1045	# --------------------
1046	# Check how to create a tarball in format FORMAT.
1047	# FORMAT should be one of 'v7', 'ustar', or 'pax'.
1048	#
1049	# Substitute a variable $(am__tar) that is a command
1050	# writing to stdout a FORMAT-tarball containing the directory
1051	# $tardir.
1052	# tardir=directory && $(am__tar) > result.tar
1053	#
1054	# Substitute a variable $(am__untar) that extract such
1055	# a tarball read from stdin.
1056	# $(am__untar) < result.tar
1057	#
1058	AC_DEFUN([_AM_PROG_TAR],
1059	[# Always define AMTAR for backward compatibility. Yes, it's still used
1060	# in the wild :-( We should find a proper way to deprecate it ...
1061	AC_SUBST([AMTAR], ['$${TAR-tar}'])
1062
1063	# We'll loop over all known methods to create a tar archive until one works.
1064	_am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
1065
1066	m4_if([$1], [v7],
1067	[am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'],
1068
1069	[m4_case([$1],
1070	[ustar],
1071	[# The POSIX 1988 'ustar' format is defined with fixed-size fields.
1072	# There is notably a 21 bits limit for the UID and the GID. In fact,
1073	# the 'pax' utility can hang on bigger UID/GID (see automake bug#8343
1074	# and bug#13588).
1075	am_max_uid=2097151 # 2^21 - 1
1076	am_max_gid=$am_max_uid
1077	# The $UID and $GID variables are not portable, so we need to resort
1078	# to the POSIX-mandated id(1) utility. Errors in the 'id' calls
1079	# below are definitely unexpected, so allow the users to see them
1080	# (that is, avoid stderr redirection).
1081	am_uid=`id -u \|\| echo unknown`
1082	am_gid=`id -g \|\| echo unknown`
1083	AC_MSG_CHECKING([whether UID '$am_uid' is supported by ustar format])
1084	if test $am_uid -le $am_max_uid; then
1085	AC_MSG_RESULT([yes])
1086	else
1087	AC_MSG_RESULT([no])
1088	_am_tools=none
1089	fi
1090	AC_MSG_CHECKING([whether GID '$am_gid' is supported by ustar format])
1091	if test $am_gid -le $am_max_gid; then
1092	AC_MSG_RESULT([yes])
1093	else
1094	AC_MSG_RESULT([no])
1095	_am_tools=none
1096	fi],
1097
1098	[pax],
1099	[],
1100
1101	[m4_fatal([Unknown tar format])])
1102
1103	AC_MSG_CHECKING([how to create a $1 tar archive])
1104
1105	# Go ahead even if we have the value already cached. We do so because we
1106	# need to set the values for the 'am__tar' and 'am__untar' variables.
1107	_am_tools=${am_cv_prog_tar_$1-$_am_tools}
1108
1109	for _am_tool in $_am_tools; do
1110	case $_am_tool in
1111	gnutar)
1112	for _am_tar in tar gnutar gtar; do
1113	AM_RUN_LOG([$_am_tar --version]) && break
1114	done
1115	am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"'
1116	am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"'
1117	am__untar="$_am_tar -xf -"
1118	;;
1119	plaintar)
1120	# Must skip GNU tar: if it does not support --format= it doesn't create
1121	# ustar tarball either.
1122	(tar --version) >/dev/null 2>&1 && continue
1123	am__tar='tar chf - "$$tardir"'
1124	am__tar_='tar chf - "$tardir"'
1125	am__untar='tar xf -'
1126	;;
1127	pax)
1128	am__tar='pax -L -x $1 -w "$$tardir"'
1129	am__tar_='pax -L -x $1 -w "$tardir"'
1130	am__untar='pax -r'
1131	;;
1132	cpio)
1133	am__tar='find "$$tardir" -print \| cpio -o -H $1 -L'
1134	am__tar_='find "$tardir" -print \| cpio -o -H $1 -L'
1135	am__untar='cpio -i -H $1 -d'
1136	;;
1137	none)
1138	am__tar=false
1139	am__tar_=false
1140	am__untar=false
1141	;;
1142	esac
1143
1144	# If the value was cached, stop now. We just wanted to have am__tar
1145	# and am__untar set.
1146	test -n "${am_cv_prog_tar_$1}" && break
1147
1148	# tar/untar a dummy directory, and stop if the command works.
1149	rm -rf conftest.dir
1150	mkdir conftest.dir
1151	echo GrepMe > conftest.dir/file
1152	AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar])
1153	rm -rf conftest.dir
1154	if test -s conftest.tar; then
1155	AM_RUN_LOG([$am__untar <conftest.tar])
1156	AM_RUN_LOG([cat conftest.dir/file])
1157	grep GrepMe conftest.dir/file >/dev/null 2>&1 && break
1158	fi
1159	done
1160	rm -rf conftest.dir
1161
1162	AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])
1163	AC_MSG_RESULT([$am_cv_prog_tar_$1])])
1164
1165	AC_SUBST([am__tar])
1166	AC_SUBST([am__untar])
1167	]) # _AM_PROG_TAR
1168
1169	m4_include([m4/libtool.m4])
1170	m4_include([m4/ltoptions.m4])
1171	m4_include([m4/ltsugar.m4])
1172	m4_include([m4/ltversion.m4])
1173	m4_include([m4/lt~obsolete.m4])

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