1: # generated automatically by aclocal 1.16.1 -*- Autoconf -*-
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3: # Copyright (C) 1996-2018 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
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508: AC_PROVIDE_IFELSE([AC_PROG_OBJC],
509: [_AM_DEPENDENCIES([OBJC])],
510: [m4_define([AC_PROG_OBJC],
511: m4_defn([AC_PROG_OBJC])[_AM_DEPENDENCIES([OBJC])])])dnl
512: AC_PROVIDE_IFELSE([AC_PROG_OBJCXX],
513: [_AM_DEPENDENCIES([OBJCXX])],
514: [m4_define([AC_PROG_OBJCXX],
515: m4_defn([AC_PROG_OBJCXX])[_AM_DEPENDENCIES([OBJCXX])])])dnl
516: ])
517: AC_REQUIRE([AM_SILENT_RULES])dnl
518: dnl The testsuite driver may need to know about EXEEXT, so add the
519: dnl 'am__EXEEXT' conditional if _AM_COMPILER_EXEEXT was seen. This
520: dnl macro is hooked onto _AC_COMPILER_EXEEXT early, see below.
521: AC_CONFIG_COMMANDS_PRE(dnl
522: [m4_provide_if([_AM_COMPILER_EXEEXT],
523: [AM_CONDITIONAL([am__EXEEXT], [test -n "$EXEEXT"])])])dnl
524:
525: # POSIX will say in a future version that running "rm -f" with no argument
526: # is OK; and we want to be able to make that assumption in our Makefile
527: # recipes. So use an aggressive probe to check that the usage we want is
528: # actually supported "in the wild" to an acceptable degree.
529: # See automake bug#10828.
530: # To make any issue more visible, cause the running configure to be aborted
531: # by default if the 'rm' program in use doesn't match our expectations; the
532: # user can still override this though.
533: if rm -f && rm -fr && rm -rf; then : OK; else
534: cat >&2 <<'END'
535: Oops!
536:
537: Your 'rm' program seems unable to run without file operands specified
538: on the command line, even when the '-f' option is present. This is contrary
539: to the behaviour of most rm programs out there, and not conforming with
540: the upcoming POSIX standard: <http://austingroupbugs.net/view.php?id=542>
541:
542: Please tell bug-automake@gnu.org about your system, including the value
543: of your $PATH and any error possibly output before this message. This
544: can help us improve future automake versions.
545:
546: END
547: if test x"$ACCEPT_INFERIOR_RM_PROGRAM" = x"yes"; then
548: echo 'Configuration will proceed anyway, since you have set the' >&2
549: echo 'ACCEPT_INFERIOR_RM_PROGRAM variable to "yes"' >&2
550: echo >&2
551: else
552: cat >&2 <<'END'
553: Aborting the configuration process, to ensure you take notice of the issue.
554:
555: You can download and install GNU coreutils to get an 'rm' implementation
556: that behaves properly: <https://www.gnu.org/software/coreutils/>.
557:
558: If you want to complete the configuration process using your problematic
559: 'rm' anyway, export the environment variable ACCEPT_INFERIOR_RM_PROGRAM
560: to "yes", and re-run configure.
561:
562: END
563: AC_MSG_ERROR([Your 'rm' program is bad, sorry.])
564: fi
565: fi
566: dnl The trailing newline in this macro's definition is deliberate, for
567: dnl backward compatibility and to allow trailing 'dnl'-style comments
568: dnl after the AM_INIT_AUTOMAKE invocation. See automake bug#16841.
569: ])
570:
571: dnl Hook into '_AC_COMPILER_EXEEXT' early to learn its expansion. Do not
572: dnl add the conditional right here, as _AC_COMPILER_EXEEXT may be further
573: dnl mangled by Autoconf and run in a shell conditional statement.
574: m4_define([_AC_COMPILER_EXEEXT],
575: m4_defn([_AC_COMPILER_EXEEXT])[m4_provide([_AM_COMPILER_EXEEXT])])
576:
577: # When config.status generates a header, we must update the stamp-h file.
578: # This file resides in the same directory as the config header
579: # that is generated. The stamp files are numbered to have different names.
580:
581: # Autoconf calls _AC_AM_CONFIG_HEADER_HOOK (when defined) in the
582: # loop where config.status creates the headers, so we can generate
583: # our stamp files there.
584: AC_DEFUN([_AC_AM_CONFIG_HEADER_HOOK],
585: [# Compute $1's index in $config_headers.
586: _am_arg=$1
587: _am_stamp_count=1
588: for _am_header in $config_headers :; do
589: case $_am_header in
590: $_am_arg | $_am_arg:* )
591: break ;;
592: * )
593: _am_stamp_count=`expr $_am_stamp_count + 1` ;;
594: esac
595: done
596: echo "timestamp for $_am_arg" >`AS_DIRNAME(["$_am_arg"])`/stamp-h[]$_am_stamp_count])
597:
598: # Copyright (C) 2001-2018 Free Software Foundation, Inc.
599: #
600: # This file is free software; the Free Software Foundation
601: # gives unlimited permission to copy and/or distribute it,
602: # with or without modifications, as long as this notice is preserved.
603:
604: # AM_PROG_INSTALL_SH
605: # ------------------
606: # Define $install_sh.
607: AC_DEFUN([AM_PROG_INSTALL_SH],
608: [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
609: if test x"${install_sh+set}" != xset; then
610: case $am_aux_dir in
611: *\ * | *\ *)
612: install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
613: *)
614: install_sh="\${SHELL} $am_aux_dir/install-sh"
615: esac
616: fi
617: AC_SUBST([install_sh])])
618:
619: # Copyright (C) 2003-2018 Free Software Foundation, Inc.
620: #
621: # This file is free software; the Free Software Foundation
622: # gives unlimited permission to copy and/or distribute it,
623: # with or without modifications, as long as this notice is preserved.
624:
625: # Check whether the underlying file-system supports filenames
626: # with a leading dot. For instance MS-DOS doesn't.
627: AC_DEFUN([AM_SET_LEADING_DOT],
628: [rm -rf .tst 2>/dev/null
629: mkdir .tst 2>/dev/null
630: if test -d .tst; then
631: am__leading_dot=.
632: else
633: am__leading_dot=_
634: fi
635: rmdir .tst 2>/dev/null
636: AC_SUBST([am__leading_dot])])
637:
638: # Add --enable-maintainer-mode option to configure. -*- Autoconf -*-
639: # From Jim Meyering
640:
641: # Copyright (C) 1996-2018 Free Software Foundation, Inc.
642: #
643: # This file is free software; the Free Software Foundation
644: # gives unlimited permission to copy and/or distribute it,
645: # with or without modifications, as long as this notice is preserved.
646:
647: # AM_MAINTAINER_MODE([DEFAULT-MODE])
648: # ----------------------------------
649: # Control maintainer-specific portions of Makefiles.
650: # Default is to disable them, unless 'enable' is passed literally.
651: # For symmetry, 'disable' may be passed as well. Anyway, the user
652: # can override the default with the --enable/--disable switch.
653: AC_DEFUN([AM_MAINTAINER_MODE],
654: [m4_case(m4_default([$1], [disable]),
655: [enable], [m4_define([am_maintainer_other], [disable])],
656: [disable], [m4_define([am_maintainer_other], [enable])],
657: [m4_define([am_maintainer_other], [enable])
658: m4_warn([syntax], [unexpected argument to AM@&t@_MAINTAINER_MODE: $1])])
659: AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
660: dnl maintainer-mode's default is 'disable' unless 'enable' is passed
661: AC_ARG_ENABLE([maintainer-mode],
662: [AS_HELP_STRING([--]am_maintainer_other[-maintainer-mode],
663: am_maintainer_other[ make rules and dependencies not useful
664: (and sometimes confusing) to the casual installer])],
665: [USE_MAINTAINER_MODE=$enableval],
666: [USE_MAINTAINER_MODE=]m4_if(am_maintainer_other, [enable], [no], [yes]))
667: AC_MSG_RESULT([$USE_MAINTAINER_MODE])
668: AM_CONDITIONAL([MAINTAINER_MODE], [test $USE_MAINTAINER_MODE = yes])
669: MAINT=$MAINTAINER_MODE_TRUE
670: AC_SUBST([MAINT])dnl
671: ]
672: )
673:
674: # Check to see how 'make' treats includes. -*- Autoconf -*-
675:
676: # Copyright (C) 2001-2018 Free Software Foundation, Inc.
677: #
678: # This file is free software; the Free Software Foundation
679: # gives unlimited permission to copy and/or distribute it,
680: # with or without modifications, as long as this notice is preserved.
681:
682: # AM_MAKE_INCLUDE()
683: # -----------------
684: # Check whether make has an 'include' directive that can support all
685: # the idioms we need for our automatic dependency tracking code.
686: AC_DEFUN([AM_MAKE_INCLUDE],
687: [AC_MSG_CHECKING([whether ${MAKE-make} supports the include directive])
688: cat > confinc.mk << 'END'
689: am__doit:
690: @echo this is the am__doit target >confinc.out
691: .PHONY: am__doit
692: END
693: am__include="#"
694: am__quote=
695: # BSD make does it like this.
696: echo '.include "confinc.mk" # ignored' > confmf.BSD
697: # Other make implementations (GNU, Solaris 10, AIX) do it like this.
698: echo 'include confinc.mk # ignored' > confmf.GNU
699: _am_result=no
700: for s in GNU BSD; do
701: AM_RUN_LOG([${MAKE-make} -f confmf.$s && cat confinc.out])
702: AS_CASE([$?:`cat confinc.out 2>/dev/null`],
703: ['0:this is the am__doit target'],
704: [AS_CASE([$s],
705: [BSD], [am__include='.include' am__quote='"'],
706: [am__include='include' am__quote=''])])
707: if test "$am__include" != "#"; then
708: _am_result="yes ($s style)"
709: break
710: fi
711: done
712: rm -f confinc.* confmf.*
713: AC_MSG_RESULT([${_am_result}])
714: AC_SUBST([am__include])])
715: AC_SUBST([am__quote])])
716:
717: # Fake the existence of programs that GNU maintainers use. -*- Autoconf -*-
718:
719: # Copyright (C) 1997-2018 Free Software Foundation, Inc.
720: #
721: # This file is free software; the Free Software Foundation
722: # gives unlimited permission to copy and/or distribute it,
723: # with or without modifications, as long as this notice is preserved.
724:
725: # AM_MISSING_PROG(NAME, PROGRAM)
726: # ------------------------------
727: AC_DEFUN([AM_MISSING_PROG],
728: [AC_REQUIRE([AM_MISSING_HAS_RUN])
729: $1=${$1-"${am_missing_run}$2"}
730: AC_SUBST($1)])
731:
732: # AM_MISSING_HAS_RUN
733: # ------------------
734: # Define MISSING if not defined so far and test if it is modern enough.
735: # If it is, set am_missing_run to use it, otherwise, to nothing.
736: AC_DEFUN([AM_MISSING_HAS_RUN],
737: [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
738: AC_REQUIRE_AUX_FILE([missing])dnl
739: if test x"${MISSING+set}" != xset; then
740: case $am_aux_dir in
741: *\ * | *\ *)
742: MISSING="\${SHELL} \"$am_aux_dir/missing\"" ;;
743: *)
744: MISSING="\${SHELL} $am_aux_dir/missing" ;;
745: esac
746: fi
747: # Use eval to expand $SHELL
748: if eval "$MISSING --is-lightweight"; then
749: am_missing_run="$MISSING "
750: else
751: am_missing_run=
752: AC_MSG_WARN(['missing' script is too old or missing])
753: fi
754: ])
755:
756: # Helper functions for option handling. -*- Autoconf -*-
757:
758: # Copyright (C) 2001-2018 Free Software Foundation, Inc.
759: #
760: # This file is free software; the Free Software Foundation
761: # gives unlimited permission to copy and/or distribute it,
762: # with or without modifications, as long as this notice is preserved.
763:
764: # _AM_MANGLE_OPTION(NAME)
765: # -----------------------
766: AC_DEFUN([_AM_MANGLE_OPTION],
767: [[_AM_OPTION_]m4_bpatsubst($1, [[^a-zA-Z0-9_]], [_])])
768:
769: # _AM_SET_OPTION(NAME)
770: # --------------------
771: # Set option NAME. Presently that only means defining a flag for this option.
772: AC_DEFUN([_AM_SET_OPTION],
773: [m4_define(_AM_MANGLE_OPTION([$1]), [1])])
774:
775: # _AM_SET_OPTIONS(OPTIONS)
776: # ------------------------
777: # OPTIONS is a space-separated list of Automake options.
778: AC_DEFUN([_AM_SET_OPTIONS],
779: [m4_foreach_w([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])])
780:
781: # _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET])
782: # -------------------------------------------
783: # Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
784: AC_DEFUN([_AM_IF_OPTION],
785: [m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])
786:
787: # Copyright (C) 1999-2018 Free Software Foundation, Inc.
788: #
789: # This file is free software; the Free Software Foundation
790: # gives unlimited permission to copy and/or distribute it,
791: # with or without modifications, as long as this notice is preserved.
792:
793: # _AM_PROG_CC_C_O
794: # ---------------
795: # Like AC_PROG_CC_C_O, but changed for automake. We rewrite AC_PROG_CC
796: # to automatically call this.
797: AC_DEFUN([_AM_PROG_CC_C_O],
798: [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
799: AC_REQUIRE_AUX_FILE([compile])dnl
800: AC_LANG_PUSH([C])dnl
801: AC_CACHE_CHECK(
802: [whether $CC understands -c and -o together],
803: [am_cv_prog_cc_c_o],
804: [AC_LANG_CONFTEST([AC_LANG_PROGRAM([])])
805: # Make sure it works both with $CC and with simple cc.
806: # Following AC_PROG_CC_C_O, we do the test twice because some
807: # compilers refuse to overwrite an existing .o file with -o,
808: # though they will create one.
809: am_cv_prog_cc_c_o=yes
810: for am_i in 1 2; do
811: if AM_RUN_LOG([$CC -c conftest.$ac_ext -o conftest2.$ac_objext]) \
812: && test -f conftest2.$ac_objext; then
813: : OK
814: else
815: am_cv_prog_cc_c_o=no
816: break
817: fi
818: done
819: rm -f core conftest*
820: unset am_i])
821: if test "$am_cv_prog_cc_c_o" != yes; then
822: # Losing compiler, so override with the script.
823: # FIXME: It is wrong to rewrite CC.
824: # But if we don't then we get into trouble of one sort or another.
825: # A longer-term fix would be to have automake use am__CC in this case,
826: # and then we could set am__CC="\$(top_srcdir)/compile \$(CC)"
827: CC="$am_aux_dir/compile $CC"
828: fi
829: AC_LANG_POP([C])])
830:
831: # For backward compatibility.
832: AC_DEFUN_ONCE([AM_PROG_CC_C_O], [AC_REQUIRE([AC_PROG_CC])])
833:
834: # Copyright (C) 2001-2018 Free Software Foundation, Inc.
835: #
836: # This file is free software; the Free Software Foundation
837: # gives unlimited permission to copy and/or distribute it,
838: # with or without modifications, as long as this notice is preserved.
839:
840: # AM_RUN_LOG(COMMAND)
841: # -------------------
842: # Run COMMAND, save the exit status in ac_status, and log it.
843: # (This has been adapted from Autoconf's _AC_RUN_LOG macro.)
844: AC_DEFUN([AM_RUN_LOG],
845: [{ echo "$as_me:$LINENO: $1" >&AS_MESSAGE_LOG_FD
846: ($1) >&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD
847: ac_status=$?
848: echo "$as_me:$LINENO: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
849: (exit $ac_status); }])
850:
851: # Check to make sure that the build environment is sane. -*- Autoconf -*-
852:
853: # Copyright (C) 1996-2018 Free Software Foundation, Inc.
854: #
855: # This file is free software; the Free Software Foundation
856: # gives unlimited permission to copy and/or distribute it,
857: # with or without modifications, as long as this notice is preserved.
858:
859: # AM_SANITY_CHECK
860: # ---------------
861: AC_DEFUN([AM_SANITY_CHECK],
862: [AC_MSG_CHECKING([whether build environment is sane])
863: # Reject unsafe characters in $srcdir or the absolute working directory
864: # name. Accept space and tab only in the latter.
865: am_lf='
866: '
867: case `pwd` in
868: *[[\\\"\#\$\&\'\`$am_lf]]*)
869: AC_MSG_ERROR([unsafe absolute working directory name]);;
870: esac
871: case $srcdir in
872: *[[\\\"\#\$\&\'\`$am_lf\ \ ]]*)
873: AC_MSG_ERROR([unsafe srcdir value: '$srcdir']);;
874: esac
875:
876: # Do 'set' in a subshell so we don't clobber the current shell's
877: # arguments. Must try -L first in case configure is actually a
878: # symlink; some systems play weird games with the mod time of symlinks
879: # (eg FreeBSD returns the mod time of the symlink's containing
880: # directory).
881: if (
882: am_has_slept=no
883: for am_try in 1 2; do
884: echo "timestamp, slept: $am_has_slept" > conftest.file
885: set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
886: if test "$[*]" = "X"; then
887: # -L didn't work.
888: set X `ls -t "$srcdir/configure" conftest.file`
889: fi
890: if test "$[*]" != "X $srcdir/configure conftest.file" \
891: && test "$[*]" != "X conftest.file $srcdir/configure"; then
892:
893: # If neither matched, then we have a broken ls. This can happen
894: # if, for instance, CONFIG_SHELL is bash and it inherits a
895: # broken ls alias from the environment. This has actually
896: # happened. Such a system could not be considered "sane".
897: AC_MSG_ERROR([ls -t appears to fail. Make sure there is not a broken
898: alias in your environment])
899: fi
900: if test "$[2]" = conftest.file || test $am_try -eq 2; then
901: break
902: fi
903: # Just in case.
904: sleep 1
905: am_has_slept=yes
906: done
907: test "$[2]" = conftest.file
908: )
909: then
910: # Ok.
911: :
912: else
913: AC_MSG_ERROR([newly created file is older than distributed files!
914: Check your system clock])
915: fi
916: AC_MSG_RESULT([yes])
917: # If we didn't sleep, we still need to ensure time stamps of config.status and
918: # generated files are strictly newer.
919: am_sleep_pid=
920: if grep 'slept: no' conftest.file >/dev/null 2>&1; then
921: ( sleep 1 ) &
922: am_sleep_pid=$!
923: fi
924: AC_CONFIG_COMMANDS_PRE(
925: [AC_MSG_CHECKING([that generated files are newer than configure])
926: if test -n "$am_sleep_pid"; then
927: # Hide warnings about reused PIDs.
928: wait $am_sleep_pid 2>/dev/null
929: fi
930: AC_MSG_RESULT([done])])
931: rm -f conftest.file
932: ])
933:
934: # Copyright (C) 2009-2018 Free Software Foundation, Inc.
935: #
936: # This file is free software; the Free Software Foundation
937: # gives unlimited permission to copy and/or distribute it,
938: # with or without modifications, as long as this notice is preserved.
939:
940: # AM_SILENT_RULES([DEFAULT])
941: # --------------------------
942: # Enable less verbose build rules; with the default set to DEFAULT
943: # ("yes" being less verbose, "no" or empty being verbose).
944: AC_DEFUN([AM_SILENT_RULES],
945: [AC_ARG_ENABLE([silent-rules], [dnl
946: AS_HELP_STRING(
947: [--enable-silent-rules],
948: [less verbose build output (undo: "make V=1")])
949: AS_HELP_STRING(
950: [--disable-silent-rules],
951: [verbose build output (undo: "make V=0")])dnl
952: ])
953: case $enable_silent_rules in @%:@ (((
954: yes) AM_DEFAULT_VERBOSITY=0;;
955: no) AM_DEFAULT_VERBOSITY=1;;
956: *) AM_DEFAULT_VERBOSITY=m4_if([$1], [yes], [0], [1]);;
957: esac
958: dnl
959: dnl A few 'make' implementations (e.g., NonStop OS and NextStep)
960: dnl do not support nested variable expansions.
961: dnl See automake bug#9928 and bug#10237.
962: am_make=${MAKE-make}
963: AC_CACHE_CHECK([whether $am_make supports nested variables],
964: [am_cv_make_support_nested_variables],
965: [if AS_ECHO([['TRUE=$(BAR$(V))
966: BAR0=false
967: BAR1=true
968: V=1
969: am__doit:
970: @$(TRUE)
971: .PHONY: am__doit']]) | $am_make -f - >/dev/null 2>&1; then
972: am_cv_make_support_nested_variables=yes
973: else
974: am_cv_make_support_nested_variables=no
975: fi])
976: if test $am_cv_make_support_nested_variables = yes; then
977: dnl Using '$V' instead of '$(V)' breaks IRIX make.
978: AM_V='$(V)'
979: AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
980: else
981: AM_V=$AM_DEFAULT_VERBOSITY
982: AM_DEFAULT_V=$AM_DEFAULT_VERBOSITY
983: fi
984: AC_SUBST([AM_V])dnl
985: AM_SUBST_NOTMAKE([AM_V])dnl
986: AC_SUBST([AM_DEFAULT_V])dnl
987: AM_SUBST_NOTMAKE([AM_DEFAULT_V])dnl
988: AC_SUBST([AM_DEFAULT_VERBOSITY])dnl
989: AM_BACKSLASH='\'
990: AC_SUBST([AM_BACKSLASH])dnl
991: _AM_SUBST_NOTMAKE([AM_BACKSLASH])dnl
992: ])
993:
994: # Copyright (C) 2001-2018 Free Software Foundation, Inc.
995: #
996: # This file is free software; the Free Software Foundation
997: # gives unlimited permission to copy and/or distribute it,
998: # with or without modifications, as long as this notice is preserved.
999:
1000: # AM_PROG_INSTALL_STRIP
1001: # ---------------------
1002: # One issue with vendor 'install' (even GNU) is that you can't
1003: # specify the program used to strip binaries. This is especially
1004: # annoying in cross-compiling environments, where the build's strip
1005: # is unlikely to handle the host's binaries.
1006: # Fortunately install-sh will honor a STRIPPROG variable, so we
1007: # always use install-sh in "make install-strip", and initialize
1008: # STRIPPROG with the value of the STRIP variable (set by the user).
1009: AC_DEFUN([AM_PROG_INSTALL_STRIP],
1010: [AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
1011: # Installed binaries are usually stripped using 'strip' when the user
1012: # run "make install-strip". However 'strip' might not be the right
1013: # tool to use in cross-compilation environments, therefore Automake
1014: # will honor the 'STRIP' environment variable to overrule this program.
1015: dnl Don't test for $cross_compiling = yes, because it might be 'maybe'.
1016: if test "$cross_compiling" != no; then
1017: AC_CHECK_TOOL([STRIP], [strip], :)
1018: fi
1019: INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
1020: AC_SUBST([INSTALL_STRIP_PROGRAM])])
1021:
1022: # Copyright (C) 2006-2018 Free Software Foundation, Inc.
1023: #
1024: # This file is free software; the Free Software Foundation
1025: # gives unlimited permission to copy and/or distribute it,
1026: # with or without modifications, as long as this notice is preserved.
1027:
1028: # _AM_SUBST_NOTMAKE(VARIABLE)
1029: # ---------------------------
1030: # Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in.
1031: # This macro is traced by Automake.
1032: AC_DEFUN([_AM_SUBST_NOTMAKE])
1033:
1034: # AM_SUBST_NOTMAKE(VARIABLE)
1035: # --------------------------
1036: # Public sister of _AM_SUBST_NOTMAKE.
1037: AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
1038:
1039: # Check how to create a tarball. -*- Autoconf -*-
1040:
1041: # Copyright (C) 2004-2018 Free Software Foundation, Inc.
1042: #
1043: # This file is free software; the Free Software Foundation
1044: # gives unlimited permission to copy and/or distribute it,
1045: # with or without modifications, as long as this notice is preserved.
1046:
1047: # _AM_PROG_TAR(FORMAT)
1048: # --------------------
1049: # Check how to create a tarball in format FORMAT.
1050: # FORMAT should be one of 'v7', 'ustar', or 'pax'.
1051: #
1052: # Substitute a variable $(am__tar) that is a command
1053: # writing to stdout a FORMAT-tarball containing the directory
1054: # $tardir.
1055: # tardir=directory && $(am__tar) > result.tar
1056: #
1057: # Substitute a variable $(am__untar) that extract such
1058: # a tarball read from stdin.
1059: # $(am__untar) < result.tar
1060: #
1061: AC_DEFUN([_AM_PROG_TAR],
1062: [# Always define AMTAR for backward compatibility. Yes, it's still used
1063: # in the wild :-( We should find a proper way to deprecate it ...
1064: AC_SUBST([AMTAR], ['$${TAR-tar}'])
1065:
1066: # We'll loop over all known methods to create a tar archive until one works.
1067: _am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
1068:
1069: m4_if([$1], [v7],
1070: [am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'],
1071:
1072: [m4_case([$1],
1073: [ustar],
1074: [# The POSIX 1988 'ustar' format is defined with fixed-size fields.
1075: # There is notably a 21 bits limit for the UID and the GID. In fact,
1076: # the 'pax' utility can hang on bigger UID/GID (see automake bug#8343
1077: # and bug#13588).
1078: am_max_uid=2097151 # 2^21 - 1
1079: am_max_gid=$am_max_uid
1080: # The $UID and $GID variables are not portable, so we need to resort
1081: # to the POSIX-mandated id(1) utility. Errors in the 'id' calls
1082: # below are definitely unexpected, so allow the users to see them
1083: # (that is, avoid stderr redirection).
1084: am_uid=`id -u || echo unknown`
1085: am_gid=`id -g || echo unknown`
1086: AC_MSG_CHECKING([whether UID '$am_uid' is supported by ustar format])
1087: if test $am_uid -le $am_max_uid; then
1088: AC_MSG_RESULT([yes])
1089: else
1090: AC_MSG_RESULT([no])
1091: _am_tools=none
1092: fi
1093: AC_MSG_CHECKING([whether GID '$am_gid' is supported by ustar format])
1094: if test $am_gid -le $am_max_gid; then
1095: AC_MSG_RESULT([yes])
1096: else
1097: AC_MSG_RESULT([no])
1098: _am_tools=none
1099: fi],
1100:
1101: [pax],
1102: [],
1103:
1104: [m4_fatal([Unknown tar format])])
1105:
1106: AC_MSG_CHECKING([how to create a $1 tar archive])
1107:
1108: # Go ahead even if we have the value already cached. We do so because we
1109: # need to set the values for the 'am__tar' and 'am__untar' variables.
1110: _am_tools=${am_cv_prog_tar_$1-$_am_tools}
1111:
1112: for _am_tool in $_am_tools; do
1113: case $_am_tool in
1114: gnutar)
1115: for _am_tar in tar gnutar gtar; do
1116: AM_RUN_LOG([$_am_tar --version]) && break
1117: done
1118: am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"'
1119: am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"'
1120: am__untar="$_am_tar -xf -"
1121: ;;
1122: plaintar)
1123: # Must skip GNU tar: if it does not support --format= it doesn't create
1124: # ustar tarball either.
1125: (tar --version) >/dev/null 2>&1 && continue
1126: am__tar='tar chf - "$$tardir"'
1127: am__tar_='tar chf - "$tardir"'
1128: am__untar='tar xf -'
1129: ;;
1130: pax)
1131: am__tar='pax -L -x $1 -w "$$tardir"'
1132: am__tar_='pax -L -x $1 -w "$tardir"'
1133: am__untar='pax -r'
1134: ;;
1135: cpio)
1136: am__tar='find "$$tardir" -print | cpio -o -H $1 -L'
1137: am__tar_='find "$tardir" -print | cpio -o -H $1 -L'
1138: am__untar='cpio -i -H $1 -d'
1139: ;;
1140: none)
1141: am__tar=false
1142: am__tar_=false
1143: am__untar=false
1144: ;;
1145: esac
1146:
1147: # If the value was cached, stop now. We just wanted to have am__tar
1148: # and am__untar set.
1149: test -n "${am_cv_prog_tar_$1}" && break
1150:
1151: # tar/untar a dummy directory, and stop if the command works.
1152: rm -rf conftest.dir
1153: mkdir conftest.dir
1154: echo GrepMe > conftest.dir/file
1155: AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar])
1156: rm -rf conftest.dir
1157: if test -s conftest.tar; then
1158: AM_RUN_LOG([$am__untar <conftest.tar])
1159: AM_RUN_LOG([cat conftest.dir/file])
1160: grep GrepMe conftest.dir/file >/dev/null 2>&1 && break
1161: fi
1162: done
1163: rm -rf conftest.dir
1164:
1165: AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])
1166: AC_MSG_RESULT([$am_cv_prog_tar_$1])])
1167:
1168: AC_SUBST([am__tar])
1169: AC_SUBST([am__untar])
1170: ]) # _AM_PROG_TAR
1171:
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