source: squid-ssl/trunk/fuentes/libltdl/aclocal.m4 @ 5496

Last change on this file since 5496 was 5496, checked in by Juanma, 22 months ago

Initial release

File size: 41.1 KB
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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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25# This file is free software; the Free Software Foundation
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61# Copyright (C) 2001-2013 Free Software Foundation, Inc.
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145# Copyright (C) 1999-2013 Free Software Foundation, Inc.
146#
147# This file is free software; the Free Software Foundation
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151
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256    msvc7 | msvc7msys | msvisualcpp | msvcmsys)
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277      # When given -MP, icc 7.0 and 7.1 complain thusly:
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279      # The diagnosis changed in icc 8.0:
280      #   icc: Command line remark: option '-MP' not supported
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289  cd ..
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334# Generate code to set up dependency tracking.              -*- Autoconf -*-
335
336# Copyright (C) 1999-2013 Free Software Foundation, Inc.
337#
338# This file is free software; the Free Software Foundation
339# gives unlimited permission to copy and/or distribute it,
340# with or without modifications, as long as this notice is preserved.
341
342
343# _AM_OUTPUT_DEPENDENCY_COMMANDS
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347  # Older Autoconf quotes --file arguments for eval, but not when files
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352  *)   set x $CONFIG_FILES ;;
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362    # Grep'ing the first line is not enough: some people post-process
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380    # simplest approach to changing $(DEPDIR) to its actual value in the
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412# Copyright (C) 1996-2013 Free Software Foundation, Inc.
413#
414# This file is free software; the Free Software Foundation
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416# with or without modifications, as long as this notice is preserved.
417
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495AC_REQUIRE([AM_PROG_INSTALL_STRIP])dnl
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500# <http://lists.gnu.org/archive/html/automake/2012-07/msg00014.html>
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504AC_REQUIRE([AC_PROG_AWK])dnl
505AC_REQUIRE([AC_PROG_MAKE_SET])dnl
506AC_REQUIRE([AM_SET_LEADING_DOT])dnl
507_AM_IF_OPTION([tar-ustar], [_AM_PROG_TAR([ustar])],
508              [_AM_IF_OPTION([tar-pax], [_AM_PROG_TAR([pax])],
509                             [_AM_PROG_TAR([v7])])])
510_AM_IF_OPTION([no-dependencies],,
511[AC_PROVIDE_IFELSE([AC_PROG_CC],
512                  [_AM_DEPENDENCIES([CC])],
513                  [m4_define([AC_PROG_CC],
514                             m4_defn([AC_PROG_CC])[_AM_DEPENDENCIES([CC])])])dnl
515AC_PROVIDE_IFELSE([AC_PROG_CXX],
516                  [_AM_DEPENDENCIES([CXX])],
517                  [m4_define([AC_PROG_CXX],
518                             m4_defn([AC_PROG_CXX])[_AM_DEPENDENCIES([CXX])])])dnl
519AC_PROVIDE_IFELSE([AC_PROG_OBJC],
520                  [_AM_DEPENDENCIES([OBJC])],
521                  [m4_define([AC_PROG_OBJC],
522                             m4_defn([AC_PROG_OBJC])[_AM_DEPENDENCIES([OBJC])])])dnl
523AC_PROVIDE_IFELSE([AC_PROG_OBJCXX],
524                  [_AM_DEPENDENCIES([OBJCXX])],
525                  [m4_define([AC_PROG_OBJCXX],
526                             m4_defn([AC_PROG_OBJCXX])[_AM_DEPENDENCIES([OBJCXX])])])dnl
527])
528AC_REQUIRE([AM_SILENT_RULES])dnl
529dnl The testsuite driver may need to know about EXEEXT, so add the
530dnl 'am__EXEEXT' conditional if _AM_COMPILER_EXEEXT was seen.  This
531dnl macro is hooked onto _AC_COMPILER_EXEEXT early, see below.
532AC_CONFIG_COMMANDS_PRE(dnl
533[m4_provide_if([_AM_COMPILER_EXEEXT],
534  [AM_CONDITIONAL([am__EXEEXT], [test -n "$EXEEXT"])])])dnl
535
536# POSIX will say in a future version that running "rm -f" with no argument
537# is OK; and we want to be able to make that assumption in our Makefile
538# recipes.  So use an aggressive probe to check that the usage we want is
539# actually supported "in the wild" to an acceptable degree.
540# See automake bug#10828.
541# To make any issue more visible, cause the running configure to be aborted
542# by default if the 'rm' program in use doesn't match our expectations; the
543# user can still override this though.
544if rm -f && rm -fr && rm -rf; then : OK; else
545  cat >&2 <<'END'
546Oops!
547
548Your 'rm' program seems unable to run without file operands specified
549on the command line, even when the '-f' option is present.  This is contrary
550to the behaviour of most rm programs out there, and not conforming with
551the upcoming POSIX standard: <http://austingroupbugs.net/view.php?id=542>
552
553Please tell bug-automake@gnu.org about your system, including the value
554of your $PATH and any error possibly output before this message.  This
555can help us improve future automake versions.
556
557END
558  if test x"$ACCEPT_INFERIOR_RM_PROGRAM" = x"yes"; then
559    echo 'Configuration will proceed anyway, since you have set the' >&2
560    echo 'ACCEPT_INFERIOR_RM_PROGRAM variable to "yes"' >&2
561    echo >&2
562  else
563    cat >&2 <<'END'
564Aborting the configuration process, to ensure you take notice of the issue.
565
566You can download and install GNU coreutils to get an 'rm' implementation
567that behaves properly: <http://www.gnu.org/software/coreutils/>.
568
569If you want to complete the configuration process using your problematic
570'rm' anyway, export the environment variable ACCEPT_INFERIOR_RM_PROGRAM
571to "yes", and re-run configure.
572
573END
574    AC_MSG_ERROR([Your 'rm' program is bad, sorry.])
575  fi
576fi
577])
578
579dnl Hook into '_AC_COMPILER_EXEEXT' early to learn its expansion.  Do not
580dnl add the conditional right here, as _AC_COMPILER_EXEEXT may be further
581dnl mangled by Autoconf and run in a shell conditional statement.
582m4_define([_AC_COMPILER_EXEEXT],
583m4_defn([_AC_COMPILER_EXEEXT])[m4_provide([_AM_COMPILER_EXEEXT])])
584
585# When config.status generates a header, we must update the stamp-h file.
586# This file resides in the same directory as the config header
587# that is generated.  The stamp files are numbered to have different names.
588
589# Autoconf calls _AC_AM_CONFIG_HEADER_HOOK (when defined) in the
590# loop where config.status creates the headers, so we can generate
591# our stamp files there.
592AC_DEFUN([_AC_AM_CONFIG_HEADER_HOOK],
593[# Compute $1's index in $config_headers.
594_am_arg=$1
595_am_stamp_count=1
596for _am_header in $config_headers :; do
597  case $_am_header in
598    $_am_arg | $_am_arg:* )
599      break ;;
600    * )
601      _am_stamp_count=`expr $_am_stamp_count + 1` ;;
602  esac
603done
604echo "timestamp for $_am_arg" >`AS_DIRNAME(["$_am_arg"])`/stamp-h[]$_am_stamp_count])
605
606# Copyright (C) 2001-2013 Free Software Foundation, Inc.
607#
608# This file is free software; the Free Software Foundation
609# gives unlimited permission to copy and/or distribute it,
610# with or without modifications, as long as this notice is preserved.
611
612# AM_PROG_INSTALL_SH
613# ------------------
614# Define $install_sh.
615AC_DEFUN([AM_PROG_INSTALL_SH],
616[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
617if test x"${install_sh}" != xset; then
618  case $am_aux_dir in
619  *\ * | *\     *)
620    install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
621  *)
622    install_sh="\${SHELL} $am_aux_dir/install-sh"
623  esac
624fi
625AC_SUBST([install_sh])])
626
627# Copyright (C) 2003-2013 Free Software Foundation, Inc.
628#
629# This file is free software; the Free Software Foundation
630# gives unlimited permission to copy and/or distribute it,
631# with or without modifications, as long as this notice is preserved.
632
633# Check whether the underlying file-system supports filenames
634# with a leading dot.  For instance MS-DOS doesn't.
635AC_DEFUN([AM_SET_LEADING_DOT],
636[rm -rf .tst 2>/dev/null
637mkdir .tst 2>/dev/null
638if test -d .tst; then
639  am__leading_dot=.
640else
641  am__leading_dot=_
642fi
643rmdir .tst 2>/dev/null
644AC_SUBST([am__leading_dot])])
645
646# Check to see how 'make' treats includes.                  -*- Autoconf -*-
647
648# Copyright (C) 2001-2013 Free Software Foundation, Inc.
649#
650# This file is free software; the Free Software Foundation
651# gives unlimited permission to copy and/or distribute it,
652# with or without modifications, as long as this notice is preserved.
653
654# AM_MAKE_INCLUDE()
655# -----------------
656# Check to see how make treats includes.
657AC_DEFUN([AM_MAKE_INCLUDE],
658[am_make=${MAKE-make}
659cat > confinc << 'END'
660am__doit:
661        @echo this is the am__doit target
662.PHONY: am__doit
663END
664# If we don't find an include directive, just comment out the code.
665AC_MSG_CHECKING([for style of include used by $am_make])
666am__include="#"
667am__quote=
668_am_result=none
669# First try GNU make style include.
670echo "include confinc" > confmf
671# Ignore all kinds of additional output from 'make'.
672case `$am_make -s -f confmf 2> /dev/null` in #(
673*the\ am__doit\ target*)
674  am__include=include
675  am__quote=
676  _am_result=GNU
677  ;;
678esac
679# Now try BSD make style include.
680if test "$am__include" = "#"; then
681   echo '.include "confinc"' > confmf
682   case `$am_make -s -f confmf 2> /dev/null` in #(
683   *the\ am__doit\ target*)
684     am__include=.include
685     am__quote="\""
686     _am_result=BSD
687     ;;
688   esac
689fi
690AC_SUBST([am__include])
691AC_SUBST([am__quote])
692AC_MSG_RESULT([$_am_result])
693rm -f confinc confmf
694])
695
696# Fake the existence of programs that GNU maintainers use.  -*- Autoconf -*-
697
698# Copyright (C) 1997-2013 Free Software Foundation, Inc.
699#
700# This file is free software; the Free Software Foundation
701# gives unlimited permission to copy and/or distribute it,
702# with or without modifications, as long as this notice is preserved.
703
704# AM_MISSING_PROG(NAME, PROGRAM)
705# ------------------------------
706AC_DEFUN([AM_MISSING_PROG],
707[AC_REQUIRE([AM_MISSING_HAS_RUN])
708$1=${$1-"${am_missing_run}$2"}
709AC_SUBST($1)])
710
711# AM_MISSING_HAS_RUN
712# ------------------
713# Define MISSING if not defined so far and test if it is modern enough.
714# If it is, set am_missing_run to use it, otherwise, to nothing.
715AC_DEFUN([AM_MISSING_HAS_RUN],
716[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
717AC_REQUIRE_AUX_FILE([missing])dnl
718if test x"${MISSING+set}" != xset; then
719  case $am_aux_dir in
720  *\ * | *\     *)
721    MISSING="\${SHELL} \"$am_aux_dir/missing\"" ;;
722  *)
723    MISSING="\${SHELL} $am_aux_dir/missing" ;;
724  esac
725fi
726# Use eval to expand $SHELL
727if eval "$MISSING --is-lightweight"; then
728  am_missing_run="$MISSING "
729else
730  am_missing_run=
731  AC_MSG_WARN(['missing' script is too old or missing])
732fi
733])
734
735# Helper functions for option handling.                     -*- Autoconf -*-
736
737# Copyright (C) 2001-2013 Free Software Foundation, Inc.
738#
739# This file is free software; the Free Software Foundation
740# gives unlimited permission to copy and/or distribute it,
741# with or without modifications, as long as this notice is preserved.
742
743# _AM_MANGLE_OPTION(NAME)
744# -----------------------
745AC_DEFUN([_AM_MANGLE_OPTION],
746[[_AM_OPTION_]m4_bpatsubst($1, [[^a-zA-Z0-9_]], [_])])
747
748# _AM_SET_OPTION(NAME)
749# --------------------
750# Set option NAME.  Presently that only means defining a flag for this option.
751AC_DEFUN([_AM_SET_OPTION],
752[m4_define(_AM_MANGLE_OPTION([$1]), [1])])
753
754# _AM_SET_OPTIONS(OPTIONS)
755# ------------------------
756# OPTIONS is a space-separated list of Automake options.
757AC_DEFUN([_AM_SET_OPTIONS],
758[m4_foreach_w([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])])
759
760# _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET])
761# -------------------------------------------
762# Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
763AC_DEFUN([_AM_IF_OPTION],
764[m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])
765
766# Copyright (C) 1999-2013 Free Software Foundation, Inc.
767#
768# This file is free software; the Free Software Foundation
769# gives unlimited permission to copy and/or distribute it,
770# with or without modifications, as long as this notice is preserved.
771
772# _AM_PROG_CC_C_O
773# ---------------
774# Like AC_PROG_CC_C_O, but changed for automake.  We rewrite AC_PROG_CC
775# to automatically call this.
776AC_DEFUN([_AM_PROG_CC_C_O],
777[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
778AC_REQUIRE_AUX_FILE([compile])dnl
779AC_LANG_PUSH([C])dnl
780AC_CACHE_CHECK(
781  [whether $CC understands -c and -o together],
782  [am_cv_prog_cc_c_o],
783  [AC_LANG_CONFTEST([AC_LANG_PROGRAM([])])
784  # Make sure it works both with $CC and with simple cc.
785  # Following AC_PROG_CC_C_O, we do the test twice because some
786  # compilers refuse to overwrite an existing .o file with -o,
787  # though they will create one.
788  am_cv_prog_cc_c_o=yes
789  for am_i in 1 2; do
790    if AM_RUN_LOG([$CC -c conftest.$ac_ext -o conftest2.$ac_objext]) \
791         && test -f conftest2.$ac_objext; then
792      : OK
793    else
794      am_cv_prog_cc_c_o=no
795      break
796    fi
797  done
798  rm -f core conftest*
799  unset am_i])
800if test "$am_cv_prog_cc_c_o" != yes; then
801   # Losing compiler, so override with the script.
802   # FIXME: It is wrong to rewrite CC.
803   # But if we don't then we get into trouble of one sort or another.
804   # A longer-term fix would be to have automake use am__CC in this case,
805   # and then we could set am__CC="\$(top_srcdir)/compile \$(CC)"
806   CC="$am_aux_dir/compile $CC"
807fi
808AC_LANG_POP([C])])
809
810# For backward compatibility.
811AC_DEFUN_ONCE([AM_PROG_CC_C_O], [AC_REQUIRE([AC_PROG_CC])])
812
813# Copyright (C) 2001-2013 Free Software Foundation, Inc.
814#
815# This file is free software; the Free Software Foundation
816# gives unlimited permission to copy and/or distribute it,
817# with or without modifications, as long as this notice is preserved.
818
819# AM_RUN_LOG(COMMAND)
820# -------------------
821# Run COMMAND, save the exit status in ac_status, and log it.
822# (This has been adapted from Autoconf's _AC_RUN_LOG macro.)
823AC_DEFUN([AM_RUN_LOG],
824[{ echo "$as_me:$LINENO: $1" >&AS_MESSAGE_LOG_FD
825   ($1) >&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD
826   ac_status=$?
827   echo "$as_me:$LINENO: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
828   (exit $ac_status); }])
829
830# Check to make sure that the build environment is sane.    -*- Autoconf -*-
831
832# Copyright (C) 1996-2013 Free Software Foundation, Inc.
833#
834# This file is free software; the Free Software Foundation
835# gives unlimited permission to copy and/or distribute it,
836# with or without modifications, as long as this notice is preserved.
837
838# AM_SANITY_CHECK
839# ---------------
840AC_DEFUN([AM_SANITY_CHECK],
841[AC_MSG_CHECKING([whether build environment is sane])
842# Reject unsafe characters in $srcdir or the absolute working directory
843# name.  Accept space and tab only in the latter.
844am_lf='
845'
846case `pwd` in
847  *[[\\\"\#\$\&\'\`$am_lf]]*)
848    AC_MSG_ERROR([unsafe absolute working directory name]);;
849esac
850case $srcdir in
851  *[[\\\"\#\$\&\'\`$am_lf\ \    ]]*)
852    AC_MSG_ERROR([unsafe srcdir value: '$srcdir']);;
853esac
854
855# Do 'set' in a subshell so we don't clobber the current shell's
856# arguments.  Must try -L first in case configure is actually a
857# symlink; some systems play weird games with the mod time of symlinks
858# (eg FreeBSD returns the mod time of the symlink's containing
859# directory).
860if (
861   am_has_slept=no
862   for am_try in 1 2; do
863     echo "timestamp, slept: $am_has_slept" > conftest.file
864     set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
865     if test "$[*]" = "X"; then
866        # -L didn't work.
867        set X `ls -t "$srcdir/configure" conftest.file`
868     fi
869     if test "$[*]" != "X $srcdir/configure conftest.file" \
870        && test "$[*]" != "X conftest.file $srcdir/configure"; then
871
872        # If neither matched, then we have a broken ls.  This can happen
873        # if, for instance, CONFIG_SHELL is bash and it inherits a
874        # broken ls alias from the environment.  This has actually
875        # happened.  Such a system could not be considered "sane".
876        AC_MSG_ERROR([ls -t appears to fail.  Make sure there is not a broken
877  alias in your environment])
878     fi
879     if test "$[2]" = conftest.file || test $am_try -eq 2; then
880       break
881     fi
882     # Just in case.
883     sleep 1
884     am_has_slept=yes
885   done
886   test "$[2]" = conftest.file
887   )
888then
889   # Ok.
890   :
891else
892   AC_MSG_ERROR([newly created file is older than distributed files!
893Check your system clock])
894fi
895AC_MSG_RESULT([yes])
896# If we didn't sleep, we still need to ensure time stamps of config.status and
897# generated files are strictly newer.
898am_sleep_pid=
899if grep 'slept: no' conftest.file >/dev/null 2>&1; then
900  ( sleep 1 ) &
901  am_sleep_pid=$!
902fi
903AC_CONFIG_COMMANDS_PRE(
904  [AC_MSG_CHECKING([that generated files are newer than configure])
905   if test -n "$am_sleep_pid"; then
906     # Hide warnings about reused PIDs.
907     wait $am_sleep_pid 2>/dev/null
908   fi
909   AC_MSG_RESULT([done])])
910rm -f conftest.file
911])
912
913# Copyright (C) 2009-2013 Free Software Foundation, Inc.
914#
915# This file is free software; the Free Software Foundation
916# gives unlimited permission to copy and/or distribute it,
917# with or without modifications, as long as this notice is preserved.
918
919# AM_SILENT_RULES([DEFAULT])
920# --------------------------
921# Enable less verbose build rules; with the default set to DEFAULT
922# ("yes" being less verbose, "no" or empty being verbose).
923AC_DEFUN([AM_SILENT_RULES],
924[AC_ARG_ENABLE([silent-rules], [dnl
925AS_HELP_STRING(
926  [--enable-silent-rules],
927  [less verbose build output (undo: "make V=1")])
928AS_HELP_STRING(
929  [--disable-silent-rules],
930  [verbose build output (undo: "make V=0")])dnl
931])
932case $enable_silent_rules in @%:@ (((
933  yes) AM_DEFAULT_VERBOSITY=0;;
934   no) AM_DEFAULT_VERBOSITY=1;;
935    *) AM_DEFAULT_VERBOSITY=m4_if([$1], [yes], [0], [1]);;
936esac
937dnl
938dnl A few 'make' implementations (e.g., NonStop OS and NextStep)
939dnl do not support nested variable expansions.
940dnl See automake bug#9928 and bug#10237.
941am_make=${MAKE-make}
942AC_CACHE_CHECK([whether $am_make supports nested variables],
943   [am_cv_make_support_nested_variables],
944   [if AS_ECHO([['TRUE=$(BAR$(V))
945BAR0=false
946BAR1=true
947V=1
948am__doit:
949        @$(TRUE)
950.PHONY: am__doit']]) | $am_make -f - >/dev/null 2>&1; then
951  am_cv_make_support_nested_variables=yes
952else
953  am_cv_make_support_nested_variables=no
954fi])
955if test $am_cv_make_support_nested_variables = yes; then
956  dnl Using '$V' instead of '$(V)' breaks IRIX make.
957  AM_V='$(V)'
958  AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
959else
960  AM_V=$AM_DEFAULT_VERBOSITY
961  AM_DEFAULT_V=$AM_DEFAULT_VERBOSITY
962fi
963AC_SUBST([AM_V])dnl
964AM_SUBST_NOTMAKE([AM_V])dnl
965AC_SUBST([AM_DEFAULT_V])dnl
966AM_SUBST_NOTMAKE([AM_DEFAULT_V])dnl
967AC_SUBST([AM_DEFAULT_VERBOSITY])dnl
968AM_BACKSLASH='\'
969AC_SUBST([AM_BACKSLASH])dnl
970_AM_SUBST_NOTMAKE([AM_BACKSLASH])dnl
971])
972
973# Copyright (C) 2001-2013 Free Software Foundation, Inc.
974#
975# This file is free software; the Free Software Foundation
976# gives unlimited permission to copy and/or distribute it,
977# with or without modifications, as long as this notice is preserved.
978
979# AM_PROG_INSTALL_STRIP
980# ---------------------
981# One issue with vendor 'install' (even GNU) is that you can't
982# specify the program used to strip binaries.  This is especially
983# annoying in cross-compiling environments, where the build's strip
984# is unlikely to handle the host's binaries.
985# Fortunately install-sh will honor a STRIPPROG variable, so we
986# always use install-sh in "make install-strip", and initialize
987# STRIPPROG with the value of the STRIP variable (set by the user).
988AC_DEFUN([AM_PROG_INSTALL_STRIP],
989[AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
990# Installed binaries are usually stripped using 'strip' when the user
991# run "make install-strip".  However 'strip' might not be the right
992# tool to use in cross-compilation environments, therefore Automake
993# will honor the 'STRIP' environment variable to overrule this program.
994dnl Don't test for $cross_compiling = yes, because it might be 'maybe'.
995if test "$cross_compiling" != no; then
996  AC_CHECK_TOOL([STRIP], [strip], :)
997fi
998INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
999AC_SUBST([INSTALL_STRIP_PROGRAM])])
1000
1001# Copyright (C) 2006-2013 Free Software Foundation, Inc.
1002#
1003# This file is free software; the Free Software Foundation
1004# gives unlimited permission to copy and/or distribute it,
1005# with or without modifications, as long as this notice is preserved.
1006
1007# _AM_SUBST_NOTMAKE(VARIABLE)
1008# ---------------------------
1009# Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in.
1010# This macro is traced by Automake.
1011AC_DEFUN([_AM_SUBST_NOTMAKE])
1012
1013# AM_SUBST_NOTMAKE(VARIABLE)
1014# --------------------------
1015# Public sister of _AM_SUBST_NOTMAKE.
1016AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
1017
1018# Check how to create a tarball.                            -*- Autoconf -*-
1019
1020# Copyright (C) 2004-2013 Free Software Foundation, Inc.
1021#
1022# This file is free software; the Free Software Foundation
1023# gives unlimited permission to copy and/or distribute it,
1024# with or without modifications, as long as this notice is preserved.
1025
1026# _AM_PROG_TAR(FORMAT)
1027# --------------------
1028# Check how to create a tarball in format FORMAT.
1029# FORMAT should be one of 'v7', 'ustar', or 'pax'.
1030#
1031# Substitute a variable $(am__tar) that is a command
1032# writing to stdout a FORMAT-tarball containing the directory
1033# $tardir.
1034#     tardir=directory && $(am__tar) > result.tar
1035#
1036# Substitute a variable $(am__untar) that extract such
1037# a tarball read from stdin.
1038#     $(am__untar) < result.tar
1039#
1040AC_DEFUN([_AM_PROG_TAR],
1041[# Always define AMTAR for backward compatibility.  Yes, it's still used
1042# in the wild :-(  We should find a proper way to deprecate it ...
1043AC_SUBST([AMTAR], ['$${TAR-tar}'])
1044
1045# We'll loop over all known methods to create a tar archive until one works.
1046_am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
1047
1048m4_if([$1], [v7],
1049  [am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'],
1050
1051  [m4_case([$1],
1052    [ustar],
1053     [# The POSIX 1988 'ustar' format is defined with fixed-size fields.
1054      # There is notably a 21 bits limit for the UID and the GID.  In fact,
1055      # the 'pax' utility can hang on bigger UID/GID (see automake bug#8343
1056      # and bug#13588).
1057      am_max_uid=2097151 # 2^21 - 1
1058      am_max_gid=$am_max_uid
1059      # The $UID and $GID variables are not portable, so we need to resort
1060      # to the POSIX-mandated id(1) utility.  Errors in the 'id' calls
1061      # below are definitely unexpected, so allow the users to see them
1062      # (that is, avoid stderr redirection).
1063      am_uid=`id -u || echo unknown`
1064      am_gid=`id -g || echo unknown`
1065      AC_MSG_CHECKING([whether UID '$am_uid' is supported by ustar format])
1066      if test $am_uid -le $am_max_uid; then
1067         AC_MSG_RESULT([yes])
1068      else
1069         AC_MSG_RESULT([no])
1070         _am_tools=none
1071      fi
1072      AC_MSG_CHECKING([whether GID '$am_gid' is supported by ustar format])
1073      if test $am_gid -le $am_max_gid; then
1074         AC_MSG_RESULT([yes])
1075      else
1076        AC_MSG_RESULT([no])
1077        _am_tools=none
1078      fi],
1079
1080  [pax],
1081    [],
1082
1083  [m4_fatal([Unknown tar format])])
1084
1085  AC_MSG_CHECKING([how to create a $1 tar archive])
1086
1087  # Go ahead even if we have the value already cached.  We do so because we
1088  # need to set the values for the 'am__tar' and 'am__untar' variables.
1089  _am_tools=${am_cv_prog_tar_$1-$_am_tools}
1090
1091  for _am_tool in $_am_tools; do
1092    case $_am_tool in
1093    gnutar)
1094      for _am_tar in tar gnutar gtar; do
1095        AM_RUN_LOG([$_am_tar --version]) && break
1096      done
1097      am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"'
1098      am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"'
1099      am__untar="$_am_tar -xf -"
1100      ;;
1101    plaintar)
1102      # Must skip GNU tar: if it does not support --format= it doesn't create
1103      # ustar tarball either.
1104      (tar --version) >/dev/null 2>&1 && continue
1105      am__tar='tar chf - "$$tardir"'
1106      am__tar_='tar chf - "$tardir"'
1107      am__untar='tar xf -'
1108      ;;
1109    pax)
1110      am__tar='pax -L -x $1 -w "$$tardir"'
1111      am__tar_='pax -L -x $1 -w "$tardir"'
1112      am__untar='pax -r'
1113      ;;
1114    cpio)
1115      am__tar='find "$$tardir" -print | cpio -o -H $1 -L'
1116      am__tar_='find "$tardir" -print | cpio -o -H $1 -L'
1117      am__untar='cpio -i -H $1 -d'
1118      ;;
1119    none)
1120      am__tar=false
1121      am__tar_=false
1122      am__untar=false
1123      ;;
1124    esac
1125
1126    # If the value was cached, stop now.  We just wanted to have am__tar
1127    # and am__untar set.
1128    test -n "${am_cv_prog_tar_$1}" && break
1129
1130    # tar/untar a dummy directory, and stop if the command works.
1131    rm -rf conftest.dir
1132    mkdir conftest.dir
1133    echo GrepMe > conftest.dir/file
1134    AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar])
1135    rm -rf conftest.dir
1136    if test -s conftest.tar; then
1137      AM_RUN_LOG([$am__untar <conftest.tar])
1138      AM_RUN_LOG([cat conftest.dir/file])
1139      grep GrepMe conftest.dir/file >/dev/null 2>&1 && break
1140    fi
1141  done
1142  rm -rf conftest.dir
1143
1144  AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])
1145  AC_MSG_RESULT([$am_cv_prog_tar_$1])])
1146
1147AC_SUBST([am__tar])
1148AC_SUBST([am__untar])
1149]) # _AM_PROG_TAR
1150
1151m4_include([m4/argz.m4])
1152m4_include([m4/libtool.m4])
1153m4_include([m4/ltdl.m4])
1154m4_include([m4/ltoptions.m4])
1155m4_include([m4/ltsugar.m4])
1156m4_include([m4/ltversion.m4])
1157m4_include([m4/lt~obsolete.m4])
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