Bundle libseccomp 2.3.1
[linux-seccomp.git] / libseccomp / aclocal.m4
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.
24 #
25 # This file is free software; the Free Software Foundation
26 # gives unlimited permission to copy and/or distribute it,
27 # with or without modifications, as long as this notice is preserved.
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59 # Copyright (C) 2011-2013 Free Software Foundation, Inc.
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121 # Copyright (C) 2001-2013 Free Software Foundation, Inc.
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174 # Copyright (C) 1997-2013 Free Software Foundation, Inc.
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205 # Copyright (C) 1999-2013 Free Software Foundation, Inc.
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207 # This file is free software; the Free Software Foundation
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209 # with or without modifications, as long as this notice is preserved.
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394 # Generate code to set up dependency tracking. -*- Autoconf -*-
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396 # Copyright (C) 1999-2013 Free Software Foundation, Inc.
397 #
398 # This file is free software; the Free Software Foundation
399 # gives unlimited permission to copy and/or distribute it,
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401
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553 AM_MISSING_PROG([MAKEINFO], [makeinfo])
554 AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
555 AC_REQUIRE([AM_PROG_INSTALL_STRIP])dnl
556 AC_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>
561 AC_SUBST([mkdir_p], ['$(MKDIR_P)'])
562 # We need awk for the "check" target. The system "awk" is bad on
563 # some platforms.
564 AC_REQUIRE([AC_PROG_AWK])dnl
565 AC_REQUIRE([AC_PROG_MAKE_SET])dnl
566 AC_REQUIRE([AM_SET_LEADING_DOT])dnl
567 _AM_IF_OPTION([tar-ustar], [_AM_PROG_TAR([ustar])],
568 [_AM_IF_OPTION([tar-pax], [_AM_PROG_TAR([pax])],
569 [_AM_PROG_TAR([v7])])])
570 _AM_IF_OPTION([no-dependencies],,
571 [AC_PROVIDE_IFELSE([AC_PROG_CC],
572 [_AM_DEPENDENCIES([CC])],
573 [m4_define([AC_PROG_CC],
574 m4_defn([AC_PROG_CC])[_AM_DEPENDENCIES([CC])])])dnl
575 AC_PROVIDE_IFELSE([AC_PROG_CXX],
576 [_AM_DEPENDENCIES([CXX])],
577 [m4_define([AC_PROG_CXX],
578 m4_defn([AC_PROG_CXX])[_AM_DEPENDENCIES([CXX])])])dnl
579 AC_PROVIDE_IFELSE([AC_PROG_OBJC],
580 [_AM_DEPENDENCIES([OBJC])],
581 [m4_define([AC_PROG_OBJC],
582 m4_defn([AC_PROG_OBJC])[_AM_DEPENDENCIES([OBJC])])])dnl
583 AC_PROVIDE_IFELSE([AC_PROG_OBJCXX],
584 [_AM_DEPENDENCIES([OBJCXX])],
585 [m4_define([AC_PROG_OBJCXX],
586 m4_defn([AC_PROG_OBJCXX])[_AM_DEPENDENCIES([OBJCXX])])])dnl
587 ])
588 AC_REQUIRE([AM_SILENT_RULES])dnl
589 dnl The testsuite driver may need to know about EXEEXT, so add the
590 dnl 'am__EXEEXT' conditional if _AM_COMPILER_EXEEXT was seen. This
591 dnl macro is hooked onto _AC_COMPILER_EXEEXT early, see below.
592 AC_CONFIG_COMMANDS_PRE(dnl
593 [m4_provide_if([_AM_COMPILER_EXEEXT],
594 [AM_CONDITIONAL([am__EXEEXT], [test -n "$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.
604 if rm -f && rm -fr && rm -rf; then : OK; else
605 cat >&2 <<'END'
606 Oops!
607
608 Your 'rm' program seems unable to run without file operands specified
609 on the command line, even when the '-f' option is present. This is contrary
610 to the behaviour of most rm programs out there, and not conforming with
611 the upcoming POSIX standard: <http://austingroupbugs.net/view.php?id=542>
612
613 Please tell bug-automake@gnu.org about your system, including the value
614 of your $PATH and any error possibly output before this message. This
615 can help us improve future automake versions.
616
617 END
618 if test x"$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'
624 Aborting the configuration process, to ensure you take notice of the issue.
625
626 You can download and install GNU coreutils to get an 'rm' implementation
627 that behaves properly: <http://www.gnu.org/software/coreutils/>.
628
629 If you want to complete the configuration process using your problematic
630 'rm' anyway, export the environment variable ACCEPT_INFERIOR_RM_PROGRAM
631 to "yes", and re-run configure.
632
633 END
634 AC_MSG_ERROR([Your 'rm' program is bad, sorry.])
635 fi
636 fi])
637
638 dnl Hook into '_AC_COMPILER_EXEEXT' early to learn its expansion. Do not
639 dnl add the conditional right here, as _AC_COMPILER_EXEEXT may be further
640 dnl mangled by Autoconf and run in a shell conditional statement.
641 m4_define([_AC_COMPILER_EXEEXT],
642 m4_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.
651 AC_DEFUN([_AC_AM_CONFIG_HEADER_HOOK],
652 [# Compute $1's index in $config_headers.
653 _am_arg=$1
654 _am_stamp_count=1
655 for _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
662 done
663 echo "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 $install_sh.
674 AC_DEFUN([AM_PROG_INSTALL_SH],
675 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
676 if test x"${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} $am_aux_dir/install-sh"
682 esac
683 fi
684 AC_SUBST([install_sh])])
685
686 # Copyright (C) 2003-2013 Free Software Foundation, Inc.
687 #
688 # This file is free software; the Free Software Foundation
689 # gives unlimited permission to copy and/or distribute it,
690 # with or without modifications, as long as this notice is preserved.
691
692 # Check whether the underlying file-system supports filenames
693 # with a leading dot. For instance MS-DOS doesn't.
694 AC_DEFUN([AM_SET_LEADING_DOT],
695 [rm -rf .tst 2>/dev/null
696 mkdir .tst 2>/dev/null
697 if test -d .tst; then
698 am__leading_dot=.
699 else
700 am__leading_dot=_
701 fi
702 rmdir .tst 2>/dev/null
703 AC_SUBST([am__leading_dot])])
704
705 # Check to see how 'make' treats includes. -*- Autoconf -*-
706
707 # Copyright (C) 2001-2013 Free Software Foundation, Inc.
708 #
709 # This file is free software; the Free Software Foundation
710 # gives unlimited permission to copy and/or distribute it,
711 # with or without modifications, as long as this notice is preserved.
712
713 # AM_MAKE_INCLUDE()
714 # -----------------
715 # Check to see how make treats includes.
716 AC_DEFUN([AM_MAKE_INCLUDE],
717 [am_make=${MAKE-make}
718 cat > confinc << 'END'
719 am__doit:
720 @echo this is the am__doit target
721 .PHONY: am__doit
722 END
723 # If we don't find an include directive, just comment out the code.
724 AC_MSG_CHECKING([for style of include used by $am_make])
725 am__include="#"
726 am__quote=
727 _am_result=none
728 # First try GNU make style include.
729 echo "include confinc" > confmf
730 # Ignore all kinds of additional output from 'make'.
731 case `$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 ;;
737 esac
738 # Now try BSD make style include.
739 if 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
748 fi
749 AC_SUBST([am__include])
750 AC_SUBST([am__quote])
751 AC_MSG_RESULT([$_am_result])
752 rm -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 # ------------------------------
765 AC_DEFUN([AM_MISSING_PROG],
766 [AC_REQUIRE([AM_MISSING_HAS_RUN])
767 $1=${$1-"${am_missing_run}$2"}
768 AC_SUBST($1)])
769
770 # AM_MISSING_HAS_RUN
771 # ------------------
772 # Define MISSING if not defined so far and test if it is modern enough.
773 # If it is, set am_missing_run to use it, otherwise, to nothing.
774 AC_DEFUN([AM_MISSING_HAS_RUN],
775 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
776 AC_REQUIRE_AUX_FILE([missing])dnl
777 if test x"${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
784 fi
785 # Use eval to expand $SHELL
786 if eval "$MISSING --is-lightweight"; then
787 am_missing_run="$MISSING "
788 else
789 am_missing_run=
790 AC_MSG_WARN(['missing' script is too old or missing])
791 fi
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 # -----------------------
804 AC_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.
810 AC_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.
816 AC_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.
822 AC_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.
835 AC_DEFUN([_AM_PROG_CC_C_O],
836 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
837 AC_REQUIRE_AUX_FILE([compile])dnl
838 AC_LANG_PUSH([C])dnl
839 AC_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.$ac_objext; then
851 : OK
852 else
853 am_cv_prog_cc_c_o=no
854 break
855 fi
856 done
857 rm -f core conftest*
858 unset am_i])
859 if test "$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 $CC"
866 fi
867 AC_LANG_POP([C])])
868
869 # For backward compatibility.
870 AC_DEFUN_ONCE([AM_PROG_CC_C_O], [AC_REQUIRE([AC_PROG_CC])])
871
872 # Copyright (C) 2001-2013 Free Software Foundation, Inc.
873 #
874 # This file is free software; the Free Software Foundation
875 # gives unlimited permission to copy and/or distribute it,
876 # with or without modifications, as long as this notice is preserved.
877
878 # AM_RUN_LOG(COMMAND)
879 # -------------------
880 # Run COMMAND, save the exit status in ac_status, and log it.
881 # (This has been adapted from Autoconf's _AC_RUN_LOG macro.)
882 AC_DEFUN([AM_RUN_LOG],
883 [{ echo "$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 # ---------------
899 AC_DEFUN([AM_SANITY_CHECK],
900 [AC_MSG_CHECKING([whether build environment is sane])
901 # Reject unsafe characters in $srcdir or the absolute working directory
902 # name. Accept space and tab only in the latter.
903 am_lf='
904 '
905 case `pwd` in
906 *[[\\\"\#\$\&\'\`$am_lf]]*)
907 AC_MSG_ERROR([unsafe absolute working directory name]);;
908 esac
909 case $srcdir in
910 *[[\\\"\#\$\&\'\`$am_lf\ \ ]]*)
911 AC_MSG_ERROR([unsafe srcdir value: '$srcdir']);;
912 esac
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).
919 if (
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 )
947 then
948 # Ok.
949 :
950 else
951 AC_MSG_ERROR([newly created file is older than distributed files!
952 Check your system clock])
953 fi
954 AC_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.
957 am_sleep_pid=
958 if grep 'slept: no' conftest.file >/dev/null 2>&1; then
959 ( sleep 1 ) &
960 am_sleep_pid=$!
961 fi
962 AC_CONFIG_COMMANDS_PRE(
963 [AC_MSG_CHECKING([that generated files are newer than configure])
964 if test -n "$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])])
969 rm -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).
982 AC_DEFUN([AM_SILENT_RULES],
983 [AC_ARG_ENABLE([silent-rules], [dnl
984 AS_HELP_STRING(
985 [--enable-silent-rules],
986 [less verbose build output (undo: "make V=1")])
987 AS_HELP_STRING(
988 [--disable-silent-rules],
989 [verbose build output (undo: "make V=0")])dnl
990 ])
991 case $enable_silent_rules in @%:@ (((
992 yes) AM_DEFAULT_VERBOSITY=0;;
993 no) AM_DEFAULT_VERBOSITY=1;;
994 *) AM_DEFAULT_VERBOSITY=m4_if([$1], [yes], [0], [1]);;
995 esac
996 dnl
997 dnl A few 'make' implementations (e.g., NonStop OS and NextStep)
998 dnl do not support nested variable expansions.
999 dnl See automake bug#9928 and bug#10237.
1000 am_make=${MAKE-make}
1001 AC_CACHE_CHECK([whether $am_make supports nested variables],
1002 [am_cv_make_support_nested_variables],
1003 [if AS_ECHO([['TRUE=$(BAR$(V))
1004 BAR0=false
1005 BAR1=true
1006 V=1
1007 am__doit:
1008 @$(TRUE)
1009 .PHONY: am__doit']]) | $am_make -f - >/dev/null 2>&1; then
1010 am_cv_make_support_nested_variables=yes
1011 else
1012 am_cv_make_support_nested_variables=no
1013 fi])
1014 if 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='$(AM_DEFAULT_VERBOSITY)'
1018 else
1019 AM_V=$AM_DEFAULT_VERBOSITY
1020 AM_DEFAULT_V=$AM_DEFAULT_VERBOSITY
1021 fi
1022 AC_SUBST([AM_V])dnl
1023 AM_SUBST_NOTMAKE([AM_V])dnl
1024 AC_SUBST([AM_DEFAULT_V])dnl
1025 AM_SUBST_NOTMAKE([AM_DEFAULT_V])dnl
1026 AC_SUBST([AM_DEFAULT_VERBOSITY])dnl
1027 AM_BACKSLASH='\'
1028 AC_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).
1047 AC_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.
1053 dnl Don't test for $cross_compiling = yes, because it might be 'maybe'.
1054 if test "$cross_compiling" != no; then
1055 AC_CHECK_TOOL([STRIP], [strip], :)
1056 fi
1057 INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
1058 AC_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.
1070 AC_DEFUN([_AM_SUBST_NOTMAKE])
1071
1072 # AM_SUBST_NOTMAKE(VARIABLE)
1073 # --------------------------
1074 # Public sister of _AM_SUBST_NOTMAKE.
1075 AC_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 #
1099 AC_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 ...
1102 AC_SUBST([AMTAR], ['$${TAR-tar}'])
1103
1104 # We'll loop over all known methods to create a tar archive until one works.
1105 _am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
1106
1107 m4_if([$1], [v7],
1108 [am__tar='$${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
1206 AC_SUBST([am__tar])
1207 AC_SUBST([am__untar])
1208 ]) # _AM_PROG_TAR
1209
1210 m4_include([m4/libtool.m4])
1211 m4_include([m4/ltoptions.m4])
1212 m4_include([m4/ltsugar.m4])
1213 m4_include([m4/ltversion.m4])
1214 m4_include([m4/lt~obsolete.m4])
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