Bundle libseccomp 2.3.1
[linux-seccomp.git] / libseccomp / aclocal.m4
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1# generated automatically by aclocal 1.14.1 -*- Autoconf -*-
2
3# Copyright (C) 1996-2013 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.
13
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23# Copyright (C) 2002-2013 Free Software Foundation, Inc.
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555AC_REQUIRE([AM_PROG_INSTALL_STRIP])dnl
556AC_REQUIRE([AC_PROG_MKDIR_P])dnl
557# For better backward compatibility. To be removed once Automake 1.9.x
558# dies out for good. For more background, see:
559# <http://lists.gnu.org/archive/html/automake/2012-07/msg00001.html>
560# <http://lists.gnu.org/archive/html/automake/2012-07/msg00014.html>
561AC_SUBST([mkdir_p], ['$(MKDIR_P)'])
562# We need awk for the "check" target. The system "awk" is bad on
563# some platforms.
564AC_REQUIRE([AC_PROG_AWK])dnl
565AC_REQUIRE([AC_PROG_MAKE_SET])dnl
566AC_REQUIRE([AM_SET_LEADING_DOT])dnl
567_AM_IF_OPTION([tar-ustar], [_AM_PROG_TAR([ustar])],
568 [_AM_IF_OPTION([tar-pax], [_AM_PROG_TAR([pax])],
569 [_AM_PROG_TAR([v7])])])
570_AM_IF_OPTION([no-dependencies],,
571[AC_PROVIDE_IFELSE([AC_PROG_CC],
572 [_AM_DEPENDENCIES([CC])],
573 [m4_define([AC_PROG_CC],
574 m4_defn([AC_PROG_CC])[_AM_DEPENDENCIES([CC])])])dnl
575AC_PROVIDE_IFELSE([AC_PROG_CXX],
576 [_AM_DEPENDENCIES([CXX])],
577 [m4_define([AC_PROG_CXX],
578 m4_defn([AC_PROG_CXX])[_AM_DEPENDENCIES([CXX])])])dnl
579AC_PROVIDE_IFELSE([AC_PROG_OBJC],
580 [_AM_DEPENDENCIES([OBJC])],
581 [m4_define([AC_PROG_OBJC],
582 m4_defn([AC_PROG_OBJC])[_AM_DEPENDENCIES([OBJC])])])dnl
583AC_PROVIDE_IFELSE([AC_PROG_OBJCXX],
584 [_AM_DEPENDENCIES([OBJCXX])],
585 [m4_define([AC_PROG_OBJCXX],
586 m4_defn([AC_PROG_OBJCXX])[_AM_DEPENDENCIES([OBJCXX])])])dnl
587])
588AC_REQUIRE([AM_SILENT_RULES])dnl
589dnl The testsuite driver may need to know about EXEEXT, so add the
590dnl 'am__EXEEXT' conditional if _AM_COMPILER_EXEEXT was seen. This
591dnl macro is hooked onto _AC_COMPILER_EXEEXT early, see below.
592AC_CONFIG_COMMANDS_PRE(dnl
593[m4_provide_if([_AM_COMPILER_EXEEXT],
594 [AM_CONDITIONAL([am__EXEEXT], [test -n "$EXEEXT"])])])dnl
595
596# POSIX will say in a future version that running "rm -f" with no argument
597# is OK; and we want to be able to make that assumption in our Makefile
598# recipes. So use an aggressive probe to check that the usage we want is
599# actually supported "in the wild" to an acceptable degree.
600# See automake bug#10828.
601# To make any issue more visible, cause the running configure to be aborted
602# by default if the 'rm' program in use doesn't match our expectations; the
603# user can still override this though.
604if rm -f && rm -fr && rm -rf; then : OK; else
605 cat >&2 <<'END'
606Oops!
607
608Your 'rm' program seems unable to run without file operands specified
609on the command line, even when the '-f' option is present. This is contrary
610to the behaviour of most rm programs out there, and not conforming with
611the upcoming POSIX standard: <http://austingroupbugs.net/view.php?id=542>
612
613Please tell bug-automake@gnu.org about your system, including the value
614of your $PATH and any error possibly output before this message. This
615can help us improve future automake versions.
616
617END
618 if test x"$ACCEPT_INFERIOR_RM_PROGRAM" = x"yes"; then
619 echo 'Configuration will proceed anyway, since you have set the' >&2
620 echo 'ACCEPT_INFERIOR_RM_PROGRAM variable to "yes"' >&2
621 echo >&2
622 else
623 cat >&2 <<'END'
624Aborting the configuration process, to ensure you take notice of the issue.
625
626You can download and install GNU coreutils to get an 'rm' implementation
627that behaves properly: <http://www.gnu.org/software/coreutils/>.
628
629If you want to complete the configuration process using your problematic
630'rm' anyway, export the environment variable ACCEPT_INFERIOR_RM_PROGRAM
631to "yes", and re-run configure.
632
633END
634 AC_MSG_ERROR([Your 'rm' program is bad, sorry.])
635 fi
636fi])
637
638dnl Hook into '_AC_COMPILER_EXEEXT' early to learn its expansion. Do not
639dnl add the conditional right here, as _AC_COMPILER_EXEEXT may be further
640dnl mangled by Autoconf and run in a shell conditional statement.
641m4_define([_AC_COMPILER_EXEEXT],
642m4_defn([_AC_COMPILER_EXEEXT])[m4_provide([_AM_COMPILER_EXEEXT])])
643
644# When config.status generates a header, we must update the stamp-h file.
645# This file resides in the same directory as the config header
646# that is generated. The stamp files are numbered to have different names.
647
648# Autoconf calls _AC_AM_CONFIG_HEADER_HOOK (when defined) in the
649# loop where config.status creates the headers, so we can generate
650# our stamp files there.
651AC_DEFUN([_AC_AM_CONFIG_HEADER_HOOK],
652[# Compute $1's index in $config_headers.
653_am_arg=$1
654_am_stamp_count=1
655for _am_header in $config_headers :; do
656 case $_am_header in
657 $_am_arg | $_am_arg:* )
658 break ;;
659 * )
660 _am_stamp_count=`expr $_am_stamp_count + 1` ;;
661 esac
662done
663echo "timestamp for $_am_arg" >`AS_DIRNAME(["$_am_arg"])`/stamp-h[]$_am_stamp_count])
664
665# Copyright (C) 2001-2013 Free Software Foundation, Inc.
666#
667# This file is free software; the Free Software Foundation
668# gives unlimited permission to copy and/or distribute it,
669# with or without modifications, as long as this notice is preserved.
670
671# AM_PROG_INSTALL_SH
672# ------------------
673# Define $install_sh.
674AC_DEFUN([AM_PROG_INSTALL_SH],
675[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
676if test x"${install_sh}" != xset; then
677 case $am_aux_dir in
678 *\ * | *\ *)
679 install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
680 *)
681 install_sh="\${SHELL} $am_aux_dir/install-sh"
682 esac
683fi
684AC_SUBST([install_sh])])
685
686# Copyright (C) 2003-2013 Free Software Foundation, Inc.
687#
688# This file is free software; the Free Software Foundation
689# gives unlimited permission to copy and/or distribute it,
690# with or without modifications, as long as this notice is preserved.
691
692# Check whether the underlying file-system supports filenames
693# with a leading dot. For instance MS-DOS doesn't.
694AC_DEFUN([AM_SET_LEADING_DOT],
695[rm -rf .tst 2>/dev/null
696mkdir .tst 2>/dev/null
697if test -d .tst; then
698 am__leading_dot=.
699else
700 am__leading_dot=_
701fi
702rmdir .tst 2>/dev/null
703AC_SUBST([am__leading_dot])])
704
705# Check to see how 'make' treats includes. -*- Autoconf -*-
706
707# Copyright (C) 2001-2013 Free Software Foundation, Inc.
708#
709# This file is free software; the Free Software Foundation
710# gives unlimited permission to copy and/or distribute it,
711# with or without modifications, as long as this notice is preserved.
712
713# AM_MAKE_INCLUDE()
714# -----------------
715# Check to see how make treats includes.
716AC_DEFUN([AM_MAKE_INCLUDE],
717[am_make=${MAKE-make}
718cat > confinc << 'END'
719am__doit:
720 @echo this is the am__doit target
721.PHONY: am__doit
722END
723# If we don't find an include directive, just comment out the code.
724AC_MSG_CHECKING([for style of include used by $am_make])
725am__include="#"
726am__quote=
727_am_result=none
728# First try GNU make style include.
729echo "include confinc" > confmf
730# Ignore all kinds of additional output from 'make'.
731case `$am_make -s -f confmf 2> /dev/null` in #(
732*the\ am__doit\ target*)
733 am__include=include
734 am__quote=
735 _am_result=GNU
736 ;;
737esac
738# Now try BSD make style include.
739if test "$am__include" = "#"; then
740 echo '.include "confinc"' > confmf
741 case `$am_make -s -f confmf 2> /dev/null` in #(
742 *the\ am__doit\ target*)
743 am__include=.include
744 am__quote="\""
745 _am_result=BSD
746 ;;
747 esac
748fi
749AC_SUBST([am__include])
750AC_SUBST([am__quote])
751AC_MSG_RESULT([$_am_result])
752rm -f confinc confmf
753])
754
755# Fake the existence of programs that GNU maintainers use. -*- Autoconf -*-
756
757# Copyright (C) 1997-2013 Free Software Foundation, Inc.
758#
759# This file is free software; the Free Software Foundation
760# gives unlimited permission to copy and/or distribute it,
761# with or without modifications, as long as this notice is preserved.
762
763# AM_MISSING_PROG(NAME, PROGRAM)
764# ------------------------------
765AC_DEFUN([AM_MISSING_PROG],
766[AC_REQUIRE([AM_MISSING_HAS_RUN])
767$1=${$1-"${am_missing_run}$2"}
768AC_SUBST($1)])
769
770# AM_MISSING_HAS_RUN
771# ------------------
772# Define MISSING if not defined so far and test if it is modern enough.
773# If it is, set am_missing_run to use it, otherwise, to nothing.
774AC_DEFUN([AM_MISSING_HAS_RUN],
775[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
776AC_REQUIRE_AUX_FILE([missing])dnl
777if test x"${MISSING+set}" != xset; then
778 case $am_aux_dir in
779 *\ * | *\ *)
780 MISSING="\${SHELL} \"$am_aux_dir/missing\"" ;;
781 *)
782 MISSING="\${SHELL} $am_aux_dir/missing" ;;
783 esac
784fi
785# Use eval to expand $SHELL
786if eval "$MISSING --is-lightweight"; then
787 am_missing_run="$MISSING "
788else
789 am_missing_run=
790 AC_MSG_WARN(['missing' script is too old or missing])
791fi
792])
793
794# Helper functions for option handling. -*- Autoconf -*-
795
796# Copyright (C) 2001-2013 Free Software Foundation, Inc.
797#
798# This file is free software; the Free Software Foundation
799# gives unlimited permission to copy and/or distribute it,
800# with or without modifications, as long as this notice is preserved.
801
802# _AM_MANGLE_OPTION(NAME)
803# -----------------------
804AC_DEFUN([_AM_MANGLE_OPTION],
805[[_AM_OPTION_]m4_bpatsubst($1, [[^a-zA-Z0-9_]], [_])])
806
807# _AM_SET_OPTION(NAME)
808# --------------------
809# Set option NAME. Presently that only means defining a flag for this option.
810AC_DEFUN([_AM_SET_OPTION],
811[m4_define(_AM_MANGLE_OPTION([$1]), [1])])
812
813# _AM_SET_OPTIONS(OPTIONS)
814# ------------------------
815# OPTIONS is a space-separated list of Automake options.
816AC_DEFUN([_AM_SET_OPTIONS],
817[m4_foreach_w([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])])
818
819# _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET])
820# -------------------------------------------
821# Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
822AC_DEFUN([_AM_IF_OPTION],
823[m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])
824
825# Copyright (C) 1999-2013 Free Software Foundation, Inc.
826#
827# This file is free software; the Free Software Foundation
828# gives unlimited permission to copy and/or distribute it,
829# with or without modifications, as long as this notice is preserved.
830
831# _AM_PROG_CC_C_O
832# ---------------
833# Like AC_PROG_CC_C_O, but changed for automake. We rewrite AC_PROG_CC
834# to automatically call this.
835AC_DEFUN([_AM_PROG_CC_C_O],
836[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
837AC_REQUIRE_AUX_FILE([compile])dnl
838AC_LANG_PUSH([C])dnl
839AC_CACHE_CHECK(
840 [whether $CC understands -c and -o together],
841 [am_cv_prog_cc_c_o],
842 [AC_LANG_CONFTEST([AC_LANG_PROGRAM([])])
843 # Make sure it works both with $CC and with simple cc.
844 # Following AC_PROG_CC_C_O, we do the test twice because some
845 # compilers refuse to overwrite an existing .o file with -o,
846 # though they will create one.
847 am_cv_prog_cc_c_o=yes
848 for am_i in 1 2; do
849 if AM_RUN_LOG([$CC -c conftest.$ac_ext -o conftest2.$ac_objext]) \
850 && test -f conftest2.$ac_objext; then
851 : OK
852 else
853 am_cv_prog_cc_c_o=no
854 break
855 fi
856 done
857 rm -f core conftest*
858 unset am_i])
859if test "$am_cv_prog_cc_c_o" != yes; then
860 # Losing compiler, so override with the script.
861 # FIXME: It is wrong to rewrite CC.
862 # But if we don't then we get into trouble of one sort or another.
863 # A longer-term fix would be to have automake use am__CC in this case,
864 # and then we could set am__CC="\$(top_srcdir)/compile \$(CC)"
865 CC="$am_aux_dir/compile $CC"
866fi
867AC_LANG_POP([C])])
868
869# For backward compatibility.
870AC_DEFUN_ONCE([AM_PROG_CC_C_O], [AC_REQUIRE([AC_PROG_CC])])
871
872# Copyright (C) 2001-2013 Free Software Foundation, Inc.
873#
874# This file is free software; the Free Software Foundation
875# gives unlimited permission to copy and/or distribute it,
876# with or without modifications, as long as this notice is preserved.
877
878# AM_RUN_LOG(COMMAND)
879# -------------------
880# Run COMMAND, save the exit status in ac_status, and log it.
881# (This has been adapted from Autoconf's _AC_RUN_LOG macro.)
882AC_DEFUN([AM_RUN_LOG],
883[{ echo "$as_me:$LINENO: $1" >&AS_MESSAGE_LOG_FD
884 ($1) >&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD
885 ac_status=$?
886 echo "$as_me:$LINENO: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
887 (exit $ac_status); }])
888
889# Check to make sure that the build environment is sane. -*- Autoconf -*-
890
891# Copyright (C) 1996-2013 Free Software Foundation, Inc.
892#
893# This file is free software; the Free Software Foundation
894# gives unlimited permission to copy and/or distribute it,
895# with or without modifications, as long as this notice is preserved.
896
897# AM_SANITY_CHECK
898# ---------------
899AC_DEFUN([AM_SANITY_CHECK],
900[AC_MSG_CHECKING([whether build environment is sane])
901# Reject unsafe characters in $srcdir or the absolute working directory
902# name. Accept space and tab only in the latter.
903am_lf='
904'
905case `pwd` in
906 *[[\\\"\#\$\&\'\`$am_lf]]*)
907 AC_MSG_ERROR([unsafe absolute working directory name]);;
908esac
909case $srcdir in
910 *[[\\\"\#\$\&\'\`$am_lf\ \ ]]*)
911 AC_MSG_ERROR([unsafe srcdir value: '$srcdir']);;
912esac
913
914# Do 'set' in a subshell so we don't clobber the current shell's
915# arguments. Must try -L first in case configure is actually a
916# symlink; some systems play weird games with the mod time of symlinks
917# (eg FreeBSD returns the mod time of the symlink's containing
918# directory).
919if (
920 am_has_slept=no
921 for am_try in 1 2; do
922 echo "timestamp, slept: $am_has_slept" > conftest.file
923 set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
924 if test "$[*]" = "X"; then
925 # -L didn't work.
926 set X `ls -t "$srcdir/configure" conftest.file`
927 fi
928 if test "$[*]" != "X $srcdir/configure conftest.file" \
929 && test "$[*]" != "X conftest.file $srcdir/configure"; then
930
931 # If neither matched, then we have a broken ls. This can happen
932 # if, for instance, CONFIG_SHELL is bash and it inherits a
933 # broken ls alias from the environment. This has actually
934 # happened. Such a system could not be considered "sane".
935 AC_MSG_ERROR([ls -t appears to fail. Make sure there is not a broken
936 alias in your environment])
937 fi
938 if test "$[2]" = conftest.file || test $am_try -eq 2; then
939 break
940 fi
941 # Just in case.
942 sleep 1
943 am_has_slept=yes
944 done
945 test "$[2]" = conftest.file
946 )
947then
948 # Ok.
949 :
950else
951 AC_MSG_ERROR([newly created file is older than distributed files!
952Check your system clock])
953fi
954AC_MSG_RESULT([yes])
955# If we didn't sleep, we still need to ensure time stamps of config.status and
956# generated files are strictly newer.
957am_sleep_pid=
958if grep 'slept: no' conftest.file >/dev/null 2>&1; then
959 ( sleep 1 ) &
960 am_sleep_pid=$!
961fi
962AC_CONFIG_COMMANDS_PRE(
963 [AC_MSG_CHECKING([that generated files are newer than configure])
964 if test -n "$am_sleep_pid"; then
965 # Hide warnings about reused PIDs.
966 wait $am_sleep_pid 2>/dev/null
967 fi
968 AC_MSG_RESULT([done])])
969rm -f conftest.file
970])
971
972# Copyright (C) 2009-2013 Free Software Foundation, Inc.
973#
974# This file is free software; the Free Software Foundation
975# gives unlimited permission to copy and/or distribute it,
976# with or without modifications, as long as this notice is preserved.
977
978# AM_SILENT_RULES([DEFAULT])
979# --------------------------
980# Enable less verbose build rules; with the default set to DEFAULT
981# ("yes" being less verbose, "no" or empty being verbose).
982AC_DEFUN([AM_SILENT_RULES],
983[AC_ARG_ENABLE([silent-rules], [dnl
984AS_HELP_STRING(
985 [--enable-silent-rules],
986 [less verbose build output (undo: "make V=1")])
987AS_HELP_STRING(
988 [--disable-silent-rules],
989 [verbose build output (undo: "make V=0")])dnl
990])
991case $enable_silent_rules in @%:@ (((
992 yes) AM_DEFAULT_VERBOSITY=0;;
993 no) AM_DEFAULT_VERBOSITY=1;;
994 *) AM_DEFAULT_VERBOSITY=m4_if([$1], [yes], [0], [1]);;
995esac
996dnl
997dnl A few 'make' implementations (e.g., NonStop OS and NextStep)
998dnl do not support nested variable expansions.
999dnl See automake bug#9928 and bug#10237.
1000am_make=${MAKE-make}
1001AC_CACHE_CHECK([whether $am_make supports nested variables],
1002 [am_cv_make_support_nested_variables],
1003 [if AS_ECHO([['TRUE=$(BAR$(V))
1004BAR0=false
1005BAR1=true
1006V=1
1007am__doit:
1008 @$(TRUE)
1009.PHONY: am__doit']]) | $am_make -f - >/dev/null 2>&1; then
1010 am_cv_make_support_nested_variables=yes
1011else
1012 am_cv_make_support_nested_variables=no
1013fi])
1014if test $am_cv_make_support_nested_variables = yes; then
1015 dnl Using '$V' instead of '$(V)' breaks IRIX make.
1016 AM_V='$(V)'
1017 AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
1018else
1019 AM_V=$AM_DEFAULT_VERBOSITY
1020 AM_DEFAULT_V=$AM_DEFAULT_VERBOSITY
1021fi
1022AC_SUBST([AM_V])dnl
1023AM_SUBST_NOTMAKE([AM_V])dnl
1024AC_SUBST([AM_DEFAULT_V])dnl
1025AM_SUBST_NOTMAKE([AM_DEFAULT_V])dnl
1026AC_SUBST([AM_DEFAULT_VERBOSITY])dnl
1027AM_BACKSLASH='\'
1028AC_SUBST([AM_BACKSLASH])dnl
1029_AM_SUBST_NOTMAKE([AM_BACKSLASH])dnl
1030])
1031
1032# Copyright (C) 2001-2013 Free Software Foundation, Inc.
1033#
1034# This file is free software; the Free Software Foundation
1035# gives unlimited permission to copy and/or distribute it,
1036# with or without modifications, as long as this notice is preserved.
1037
1038# AM_PROG_INSTALL_STRIP
1039# ---------------------
1040# One issue with vendor 'install' (even GNU) is that you can't
1041# specify the program used to strip binaries. This is especially
1042# annoying in cross-compiling environments, where the build's strip
1043# is unlikely to handle the host's binaries.
1044# Fortunately install-sh will honor a STRIPPROG variable, so we
1045# always use install-sh in "make install-strip", and initialize
1046# STRIPPROG with the value of the STRIP variable (set by the user).
1047AC_DEFUN([AM_PROG_INSTALL_STRIP],
1048[AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
1049# Installed binaries are usually stripped using 'strip' when the user
1050# run "make install-strip". However 'strip' might not be the right
1051# tool to use in cross-compilation environments, therefore Automake
1052# will honor the 'STRIP' environment variable to overrule this program.
1053dnl Don't test for $cross_compiling = yes, because it might be 'maybe'.
1054if test "$cross_compiling" != no; then
1055 AC_CHECK_TOOL([STRIP], [strip], :)
1056fi
1057INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
1058AC_SUBST([INSTALL_STRIP_PROGRAM])])
1059
1060# Copyright (C) 2006-2013 Free Software Foundation, Inc.
1061#
1062# This file is free software; the Free Software Foundation
1063# gives unlimited permission to copy and/or distribute it,
1064# with or without modifications, as long as this notice is preserved.
1065
1066# _AM_SUBST_NOTMAKE(VARIABLE)
1067# ---------------------------
1068# Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in.
1069# This macro is traced by Automake.
1070AC_DEFUN([_AM_SUBST_NOTMAKE])
1071
1072# AM_SUBST_NOTMAKE(VARIABLE)
1073# --------------------------
1074# Public sister of _AM_SUBST_NOTMAKE.
1075AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
1076
1077# Check how to create a tarball. -*- Autoconf -*-
1078
1079# Copyright (C) 2004-2013 Free Software Foundation, Inc.
1080#
1081# This file is free software; the Free Software Foundation
1082# gives unlimited permission to copy and/or distribute it,
1083# with or without modifications, as long as this notice is preserved.
1084
1085# _AM_PROG_TAR(FORMAT)
1086# --------------------
1087# Check how to create a tarball in format FORMAT.
1088# FORMAT should be one of 'v7', 'ustar', or 'pax'.
1089#
1090# Substitute a variable $(am__tar) that is a command
1091# writing to stdout a FORMAT-tarball containing the directory
1092# $tardir.
1093# tardir=directory && $(am__tar) > result.tar
1094#
1095# Substitute a variable $(am__untar) that extract such
1096# a tarball read from stdin.
1097# $(am__untar) < result.tar
1098#
1099AC_DEFUN([_AM_PROG_TAR],
1100[# Always define AMTAR for backward compatibility. Yes, it's still used
1101# in the wild :-( We should find a proper way to deprecate it ...
1102AC_SUBST([AMTAR], ['$${TAR-tar}'])
1103
1104# We'll loop over all known methods to create a tar archive until one works.
1105_am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
1106
1107m4_if([$1], [v7],
1108 [am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'],
1109
1110 [m4_case([$1],
1111 [ustar],
1112 [# The POSIX 1988 'ustar' format is defined with fixed-size fields.
1113 # There is notably a 21 bits limit for the UID and the GID. In fact,
1114 # the 'pax' utility can hang on bigger UID/GID (see automake bug#8343
1115 # and bug#13588).
1116 am_max_uid=2097151 # 2^21 - 1
1117 am_max_gid=$am_max_uid
1118 # The $UID and $GID variables are not portable, so we need to resort
1119 # to the POSIX-mandated id(1) utility. Errors in the 'id' calls
1120 # below are definitely unexpected, so allow the users to see them
1121 # (that is, avoid stderr redirection).
1122 am_uid=`id -u || echo unknown`
1123 am_gid=`id -g || echo unknown`
1124 AC_MSG_CHECKING([whether UID '$am_uid' is supported by ustar format])
1125 if test $am_uid -le $am_max_uid; then
1126 AC_MSG_RESULT([yes])
1127 else
1128 AC_MSG_RESULT([no])
1129 _am_tools=none
1130 fi
1131 AC_MSG_CHECKING([whether GID '$am_gid' is supported by ustar format])
1132 if test $am_gid -le $am_max_gid; then
1133 AC_MSG_RESULT([yes])
1134 else
1135 AC_MSG_RESULT([no])
1136 _am_tools=none
1137 fi],
1138
1139 [pax],
1140 [],
1141
1142 [m4_fatal([Unknown tar format])])
1143
1144 AC_MSG_CHECKING([how to create a $1 tar archive])
1145
1146 # Go ahead even if we have the value already cached. We do so because we
1147 # need to set the values for the 'am__tar' and 'am__untar' variables.
1148 _am_tools=${am_cv_prog_tar_$1-$_am_tools}
1149
1150 for _am_tool in $_am_tools; do
1151 case $_am_tool in
1152 gnutar)
1153 for _am_tar in tar gnutar gtar; do
1154 AM_RUN_LOG([$_am_tar --version]) && break
1155 done
1156 am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"'
1157 am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"'
1158 am__untar="$_am_tar -xf -"
1159 ;;
1160 plaintar)
1161 # Must skip GNU tar: if it does not support --format= it doesn't create
1162 # ustar tarball either.
1163 (tar --version) >/dev/null 2>&1 && continue
1164 am__tar='tar chf - "$$tardir"'
1165 am__tar_='tar chf - "$tardir"'
1166 am__untar='tar xf -'
1167 ;;
1168 pax)
1169 am__tar='pax -L -x $1 -w "$$tardir"'
1170 am__tar_='pax -L -x $1 -w "$tardir"'
1171 am__untar='pax -r'
1172 ;;
1173 cpio)
1174 am__tar='find "$$tardir" -print | cpio -o -H $1 -L'
1175 am__tar_='find "$tardir" -print | cpio -o -H $1 -L'
1176 am__untar='cpio -i -H $1 -d'
1177 ;;
1178 none)
1179 am__tar=false
1180 am__tar_=false
1181 am__untar=false
1182 ;;
1183 esac
1184
1185 # If the value was cached, stop now. We just wanted to have am__tar
1186 # and am__untar set.
1187 test -n "${am_cv_prog_tar_$1}" && break
1188
1189 # tar/untar a dummy directory, and stop if the command works.
1190 rm -rf conftest.dir
1191 mkdir conftest.dir
1192 echo GrepMe > conftest.dir/file
1193 AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar])
1194 rm -rf conftest.dir
1195 if test -s conftest.tar; then
1196 AM_RUN_LOG([$am__untar <conftest.tar])
1197 AM_RUN_LOG([cat conftest.dir/file])
1198 grep GrepMe conftest.dir/file >/dev/null 2>&1 && break
1199 fi
1200 done
1201 rm -rf conftest.dir
1202
1203 AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])
1204 AC_MSG_RESULT([$am_cv_prog_tar_$1])])
1205
1206AC_SUBST([am__tar])
1207AC_SUBST([am__untar])
1208]) # _AM_PROG_TAR
1209
1210m4_include([m4/libtool.m4])
1211m4_include([m4/ltoptions.m4])
1212m4_include([m4/ltsugar.m4])
1213m4_include([m4/ltversion.m4])
1214m4_include([m4/lt~obsolete.m4])
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