1# generated automatically by aclocal 1.16.2 -*- Autoconf -*-
2
3# Copyright (C) 1996-2020 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) 2002-2020 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# AM_AUX_DIR_EXPAND                                         -*- Autoconf -*-
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61# Copyright (C) 2001-2020 Free Software Foundation, Inc.
62#
63# This file is free software; the Free Software Foundation
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111# AM_CONDITIONAL                                            -*- Autoconf -*-
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113# Copyright (C) 1997-2020 Free Software Foundation, Inc.
114#
115# This file is free software; the Free Software Foundation
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144# Copyright (C) 1999-2020 Free Software Foundation, Inc.
145#
146# This file is free software; the Free Software Foundation
147# gives unlimited permission to copy and/or distribute it,
148# with or without modifications, as long as this notice is preserved.
149
150
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332
333# Generate code to set up dependency tracking.              -*- Autoconf -*-
334
335# Copyright (C) 1999-2020 Free Software Foundation, Inc.
336#
337# This file is free software; the Free Software Foundation
338# gives unlimited permission to copy and/or distribute it,
339# with or without modifications, as long as this notice is preserved.
340
341# _AM_OUTPUT_DEPENDENCY_COMMANDS
342# ------------------------------
343AC_DEFUN([_AM_OUTPUT_DEPENDENCY_COMMANDS],
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345  # Older Autoconf quotes --file arguments for eval, but not when files
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388
389# AM_OUTPUT_DEPENDENCY_COMMANDS
390# -----------------------------
391# This macro should only be invoked once -- use via AC_REQUIRE.
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400
401# AM_EXTRA_RECURSIVE_TARGETS                                -*- Autoconf -*-
402
403# Copyright (C) 2012-2020 Free Software Foundation, Inc.
404#
405# This file is free software; the Free Software Foundation
406# gives unlimited permission to copy and/or distribute it,
407# with or without modifications, as long as this notice is preserved.
408
409# AM_EXTRA_RECURSIVE_TARGETS
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417
418# Do all the work for Automake.                             -*- Autoconf -*-
419
420# Copyright (C) 1996-2020 Free Software Foundation, Inc.
421#
422# This file is free software; the Free Software Foundation
423# gives unlimited permission to copy and/or distribute it,
424# with or without modifications, as long as this notice is preserved.
425
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525		  [m4_define([AC_PROG_CXX],
526			     m4_defn([AC_PROG_CXX])[_AM_DEPENDENCIES([CXX])])])dnl
527AC_PROVIDE_IFELSE([AC_PROG_OBJC],
528		  [_AM_DEPENDENCIES([OBJC])],
529		  [m4_define([AC_PROG_OBJC],
530			     m4_defn([AC_PROG_OBJC])[_AM_DEPENDENCIES([OBJC])])])dnl
531AC_PROVIDE_IFELSE([AC_PROG_OBJCXX],
532		  [_AM_DEPENDENCIES([OBJCXX])],
533		  [m4_define([AC_PROG_OBJCXX],
534			     m4_defn([AC_PROG_OBJCXX])[_AM_DEPENDENCIES([OBJCXX])])])dnl
535])
536AC_REQUIRE([AM_SILENT_RULES])dnl
537dnl The testsuite driver may need to know about EXEEXT, so add the
538dnl 'am__EXEEXT' conditional if _AM_COMPILER_EXEEXT was seen.  This
539dnl macro is hooked onto _AC_COMPILER_EXEEXT early, see below.
540AC_CONFIG_COMMANDS_PRE(dnl
541[m4_provide_if([_AM_COMPILER_EXEEXT],
542  [AM_CONDITIONAL([am__EXEEXT], [test -n "$EXEEXT"])])])dnl
543
544# POSIX will say in a future version that running "rm -f" with no argument
545# is OK; and we want to be able to make that assumption in our Makefile
546# recipes.  So use an aggressive probe to check that the usage we want is
547# actually supported "in the wild" to an acceptable degree.
548# See automake bug#10828.
549# To make any issue more visible, cause the running configure to be aborted
550# by default if the 'rm' program in use doesn't match our expectations; the
551# user can still override this though.
552if rm -f && rm -fr && rm -rf; then : OK; else
553  cat >&2 <<'END'
554Oops!
555
556Your 'rm' program seems unable to run without file operands specified
557on the command line, even when the '-f' option is present.  This is contrary
558to the behaviour of most rm programs out there, and not conforming with
559the upcoming POSIX standard: <http://austingroupbugs.net/view.php?id=542>
560
561Please tell bug-automake@gnu.org about your system, including the value
562of your $PATH and any error possibly output before this message.  This
563can help us improve future automake versions.
564
565END
566  if test x"$ACCEPT_INFERIOR_RM_PROGRAM" = x"yes"; then
567    echo 'Configuration will proceed anyway, since you have set the' >&2
568    echo 'ACCEPT_INFERIOR_RM_PROGRAM variable to "yes"' >&2
569    echo >&2
570  else
571    cat >&2 <<'END'
572Aborting the configuration process, to ensure you take notice of the issue.
573
574You can download and install GNU coreutils to get an 'rm' implementation
575that behaves properly: <https://www.gnu.org/software/coreutils/>.
576
577If you want to complete the configuration process using your problematic
578'rm' anyway, export the environment variable ACCEPT_INFERIOR_RM_PROGRAM
579to "yes", and re-run configure.
580
581END
582    AC_MSG_ERROR([Your 'rm' program is bad, sorry.])
583  fi
584fi
585dnl The trailing newline in this macro's definition is deliberate, for
586dnl backward compatibility and to allow trailing 'dnl'-style comments
587dnl after the AM_INIT_AUTOMAKE invocation. See automake bug#16841.
588])
589
590dnl Hook into '_AC_COMPILER_EXEEXT' early to learn its expansion.  Do not
591dnl add the conditional right here, as _AC_COMPILER_EXEEXT may be further
592dnl mangled by Autoconf and run in a shell conditional statement.
593m4_define([_AC_COMPILER_EXEEXT],
594m4_defn([_AC_COMPILER_EXEEXT])[m4_provide([_AM_COMPILER_EXEEXT])])
595
596# When config.status generates a header, we must update the stamp-h file.
597# This file resides in the same directory as the config header
598# that is generated.  The stamp files are numbered to have different names.
599
600# Autoconf calls _AC_AM_CONFIG_HEADER_HOOK (when defined) in the
601# loop where config.status creates the headers, so we can generate
602# our stamp files there.
603AC_DEFUN([_AC_AM_CONFIG_HEADER_HOOK],
604[# Compute $1's index in $config_headers.
605_am_arg=$1
606_am_stamp_count=1
607for _am_header in $config_headers :; do
608  case $_am_header in
609    $_am_arg | $_am_arg:* )
610      break ;;
611    * )
612      _am_stamp_count=`expr $_am_stamp_count + 1` ;;
613  esac
614done
615echo "timestamp for $_am_arg" >`AS_DIRNAME(["$_am_arg"])`/stamp-h[]$_am_stamp_count])
616
617# Copyright (C) 2001-2020 Free Software Foundation, Inc.
618#
619# This file is free software; the Free Software Foundation
620# gives unlimited permission to copy and/or distribute it,
621# with or without modifications, as long as this notice is preserved.
622
623# AM_PROG_INSTALL_SH
624# ------------------
625# Define $install_sh.
626AC_DEFUN([AM_PROG_INSTALL_SH],
627[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
628if test x"${install_sh+set}" != xset; then
629  case $am_aux_dir in
630  *\ * | *\	*)
631    install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
632  *)
633    install_sh="\${SHELL} $am_aux_dir/install-sh"
634  esac
635fi
636AC_SUBST([install_sh])])
637
638# Copyright (C) 2003-2020 Free Software Foundation, Inc.
639#
640# This file is free software; the Free Software Foundation
641# gives unlimited permission to copy and/or distribute it,
642# with or without modifications, as long as this notice is preserved.
643
644# Check whether the underlying file-system supports filenames
645# with a leading dot.  For instance MS-DOS doesn't.
646AC_DEFUN([AM_SET_LEADING_DOT],
647[rm -rf .tst 2>/dev/null
648mkdir .tst 2>/dev/null
649if test -d .tst; then
650  am__leading_dot=.
651else
652  am__leading_dot=_
653fi
654rmdir .tst 2>/dev/null
655AC_SUBST([am__leading_dot])])
656
657# Add --enable-maintainer-mode option to configure.         -*- Autoconf -*-
658# From Jim Meyering
659
660# Copyright (C) 1996-2020 Free Software Foundation, Inc.
661#
662# This file is free software; the Free Software Foundation
663# gives unlimited permission to copy and/or distribute it,
664# with or without modifications, as long as this notice is preserved.
665
666# AM_MAINTAINER_MODE([DEFAULT-MODE])
667# ----------------------------------
668# Control maintainer-specific portions of Makefiles.
669# Default is to disable them, unless 'enable' is passed literally.
670# For symmetry, 'disable' may be passed as well.  Anyway, the user
671# can override the default with the --enable/--disable switch.
672AC_DEFUN([AM_MAINTAINER_MODE],
673[m4_case(m4_default([$1], [disable]),
674       [enable], [m4_define([am_maintainer_other], [disable])],
675       [disable], [m4_define([am_maintainer_other], [enable])],
676       [m4_define([am_maintainer_other], [enable])
677        m4_warn([syntax], [unexpected argument to AM@&t@_MAINTAINER_MODE: $1])])
678AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
679  dnl maintainer-mode's default is 'disable' unless 'enable' is passed
680  AC_ARG_ENABLE([maintainer-mode],
681    [AS_HELP_STRING([--]am_maintainer_other[-maintainer-mode],
682      am_maintainer_other[ make rules and dependencies not useful
683      (and sometimes confusing) to the casual installer])],
684    [USE_MAINTAINER_MODE=$enableval],
685    [USE_MAINTAINER_MODE=]m4_if(am_maintainer_other, [enable], [no], [yes]))
686  AC_MSG_RESULT([$USE_MAINTAINER_MODE])
687  AM_CONDITIONAL([MAINTAINER_MODE], [test $USE_MAINTAINER_MODE = yes])
688  MAINT=$MAINTAINER_MODE_TRUE
689  AC_SUBST([MAINT])dnl
690]
691)
692
693# Check to see how 'make' treats includes.	            -*- Autoconf -*-
694
695# Copyright (C) 2001-2020 Free Software Foundation, Inc.
696#
697# This file is free software; the Free Software Foundation
698# gives unlimited permission to copy and/or distribute it,
699# with or without modifications, as long as this notice is preserved.
700
701# AM_MAKE_INCLUDE()
702# -----------------
703# Check whether make has an 'include' directive that can support all
704# the idioms we need for our automatic dependency tracking code.
705AC_DEFUN([AM_MAKE_INCLUDE],
706[AC_MSG_CHECKING([whether ${MAKE-make} supports the include directive])
707cat > confinc.mk << 'END'
708am__doit:
709	@echo this is the am__doit target >confinc.out
710.PHONY: am__doit
711END
712am__include="#"
713am__quote=
714# BSD make does it like this.
715echo '.include "confinc.mk" # ignored' > confmf.BSD
716# Other make implementations (GNU, Solaris 10, AIX) do it like this.
717echo 'include confinc.mk # ignored' > confmf.GNU
718_am_result=no
719for s in GNU BSD; do
720  AM_RUN_LOG([${MAKE-make} -f confmf.$s && cat confinc.out])
721  AS_CASE([$?:`cat confinc.out 2>/dev/null`],
722      ['0:this is the am__doit target'],
723      [AS_CASE([$s],
724          [BSD], [am__include='.include' am__quote='"'],
725          [am__include='include' am__quote=''])])
726  if test "$am__include" != "#"; then
727    _am_result="yes ($s style)"
728    break
729  fi
730done
731rm -f confinc.* confmf.*
732AC_MSG_RESULT([${_am_result}])
733AC_SUBST([am__include])])
734AC_SUBST([am__quote])])
735
736# Fake the existence of programs that GNU maintainers use.  -*- Autoconf -*-
737
738# Copyright (C) 1997-2020 Free Software Foundation, Inc.
739#
740# This file is free software; the Free Software Foundation
741# gives unlimited permission to copy and/or distribute it,
742# with or without modifications, as long as this notice is preserved.
743
744# AM_MISSING_PROG(NAME, PROGRAM)
745# ------------------------------
746AC_DEFUN([AM_MISSING_PROG],
747[AC_REQUIRE([AM_MISSING_HAS_RUN])
748$1=${$1-"${am_missing_run}$2"}
749AC_SUBST($1)])
750
751# AM_MISSING_HAS_RUN
752# ------------------
753# Define MISSING if not defined so far and test if it is modern enough.
754# If it is, set am_missing_run to use it, otherwise, to nothing.
755AC_DEFUN([AM_MISSING_HAS_RUN],
756[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
757AC_REQUIRE_AUX_FILE([missing])dnl
758if test x"${MISSING+set}" != xset; then
759  case $am_aux_dir in
760  *\ * | *\	*)
761    MISSING="\${SHELL} \"$am_aux_dir/missing\"" ;;
762  *)
763    MISSING="\${SHELL} $am_aux_dir/missing" ;;
764  esac
765fi
766# Use eval to expand $SHELL
767if eval "$MISSING --is-lightweight"; then
768  am_missing_run="$MISSING "
769else
770  am_missing_run=
771  AC_MSG_WARN(['missing' script is too old or missing])
772fi
773])
774
775# Helper functions for option handling.                     -*- Autoconf -*-
776
777# Copyright (C) 2001-2020 Free Software Foundation, Inc.
778#
779# This file is free software; the Free Software Foundation
780# gives unlimited permission to copy and/or distribute it,
781# with or without modifications, as long as this notice is preserved.
782
783# _AM_MANGLE_OPTION(NAME)
784# -----------------------
785AC_DEFUN([_AM_MANGLE_OPTION],
786[[_AM_OPTION_]m4_bpatsubst($1, [[^a-zA-Z0-9_]], [_])])
787
788# _AM_SET_OPTION(NAME)
789# --------------------
790# Set option NAME.  Presently that only means defining a flag for this option.
791AC_DEFUN([_AM_SET_OPTION],
792[m4_define(_AM_MANGLE_OPTION([$1]), [1])])
793
794# _AM_SET_OPTIONS(OPTIONS)
795# ------------------------
796# OPTIONS is a space-separated list of Automake options.
797AC_DEFUN([_AM_SET_OPTIONS],
798[m4_foreach_w([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])])
799
800# _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET])
801# -------------------------------------------
802# Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
803AC_DEFUN([_AM_IF_OPTION],
804[m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])
805
806# Copyright (C) 1999-2020 Free Software Foundation, Inc.
807#
808# This file is free software; the Free Software Foundation
809# gives unlimited permission to copy and/or distribute it,
810# with or without modifications, as long as this notice is preserved.
811
812# _AM_PROG_CC_C_O
813# ---------------
814# Like AC_PROG_CC_C_O, but changed for automake.  We rewrite AC_PROG_CC
815# to automatically call this.
816AC_DEFUN([_AM_PROG_CC_C_O],
817[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
818AC_REQUIRE_AUX_FILE([compile])dnl
819AC_LANG_PUSH([C])dnl
820AC_CACHE_CHECK(
821  [whether $CC understands -c and -o together],
822  [am_cv_prog_cc_c_o],
823  [AC_LANG_CONFTEST([AC_LANG_PROGRAM([])])
824  # Make sure it works both with $CC and with simple cc.
825  # Following AC_PROG_CC_C_O, we do the test twice because some
826  # compilers refuse to overwrite an existing .o file with -o,
827  # though they will create one.
828  am_cv_prog_cc_c_o=yes
829  for am_i in 1 2; do
830    if AM_RUN_LOG([$CC -c conftest.$ac_ext -o conftest2.$ac_objext]) \
831         && test -f conftest2.$ac_objext; then
832      : OK
833    else
834      am_cv_prog_cc_c_o=no
835      break
836    fi
837  done
838  rm -f core conftest*
839  unset am_i])
840if test "$am_cv_prog_cc_c_o" != yes; then
841   # Losing compiler, so override with the script.
842   # FIXME: It is wrong to rewrite CC.
843   # But if we don't then we get into trouble of one sort or another.
844   # A longer-term fix would be to have automake use am__CC in this case,
845   # and then we could set am__CC="\$(top_srcdir)/compile \$(CC)"
846   CC="$am_aux_dir/compile $CC"
847fi
848AC_LANG_POP([C])])
849
850# For backward compatibility.
851AC_DEFUN_ONCE([AM_PROG_CC_C_O], [AC_REQUIRE([AC_PROG_CC])])
852
853# Copyright (C) 2001-2020 Free Software Foundation, Inc.
854#
855# This file is free software; the Free Software Foundation
856# gives unlimited permission to copy and/or distribute it,
857# with or without modifications, as long as this notice is preserved.
858
859# AM_RUN_LOG(COMMAND)
860# -------------------
861# Run COMMAND, save the exit status in ac_status, and log it.
862# (This has been adapted from Autoconf's _AC_RUN_LOG macro.)
863AC_DEFUN([AM_RUN_LOG],
864[{ echo "$as_me:$LINENO: $1" >&AS_MESSAGE_LOG_FD
865   ($1) >&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD
866   ac_status=$?
867   echo "$as_me:$LINENO: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
868   (exit $ac_status); }])
869
870# Check to make sure that the build environment is sane.    -*- Autoconf -*-
871
872# Copyright (C) 1996-2020 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_SANITY_CHECK
879# ---------------
880AC_DEFUN([AM_SANITY_CHECK],
881[AC_MSG_CHECKING([whether build environment is sane])
882# Reject unsafe characters in $srcdir or the absolute working directory
883# name.  Accept space and tab only in the latter.
884am_lf='
885'
886case `pwd` in
887  *[[\\\"\#\$\&\'\`$am_lf]]*)
888    AC_MSG_ERROR([unsafe absolute working directory name]);;
889esac
890case $srcdir in
891  *[[\\\"\#\$\&\'\`$am_lf\ \	]]*)
892    AC_MSG_ERROR([unsafe srcdir value: '$srcdir']);;
893esac
894
895# Do 'set' in a subshell so we don't clobber the current shell's
896# arguments.  Must try -L first in case configure is actually a
897# symlink; some systems play weird games with the mod time of symlinks
898# (eg FreeBSD returns the mod time of the symlink's containing
899# directory).
900if (
901   am_has_slept=no
902   for am_try in 1 2; do
903     echo "timestamp, slept: $am_has_slept" > conftest.file
904     set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
905     if test "$[*]" = "X"; then
906	# -L didn't work.
907	set X `ls -t "$srcdir/configure" conftest.file`
908     fi
909     if test "$[*]" != "X $srcdir/configure conftest.file" \
910	&& test "$[*]" != "X conftest.file $srcdir/configure"; then
911
912	# If neither matched, then we have a broken ls.  This can happen
913	# if, for instance, CONFIG_SHELL is bash and it inherits a
914	# broken ls alias from the environment.  This has actually
915	# happened.  Such a system could not be considered "sane".
916	AC_MSG_ERROR([ls -t appears to fail.  Make sure there is not a broken
917  alias in your environment])
918     fi
919     if test "$[2]" = conftest.file || test $am_try -eq 2; then
920       break
921     fi
922     # Just in case.
923     sleep 1
924     am_has_slept=yes
925   done
926   test "$[2]" = conftest.file
927   )
928then
929   # Ok.
930   :
931else
932   AC_MSG_ERROR([newly created file is older than distributed files!
933Check your system clock])
934fi
935AC_MSG_RESULT([yes])
936# If we didn't sleep, we still need to ensure time stamps of config.status and
937# generated files are strictly newer.
938am_sleep_pid=
939if grep 'slept: no' conftest.file >/dev/null 2>&1; then
940  ( sleep 1 ) &
941  am_sleep_pid=$!
942fi
943AC_CONFIG_COMMANDS_PRE(
944  [AC_MSG_CHECKING([that generated files are newer than configure])
945   if test -n "$am_sleep_pid"; then
946     # Hide warnings about reused PIDs.
947     wait $am_sleep_pid 2>/dev/null
948   fi
949   AC_MSG_RESULT([done])])
950rm -f conftest.file
951])
952
953# Copyright (C) 2009-2020 Free Software Foundation, Inc.
954#
955# This file is free software; the Free Software Foundation
956# gives unlimited permission to copy and/or distribute it,
957# with or without modifications, as long as this notice is preserved.
958
959# AM_SILENT_RULES([DEFAULT])
960# --------------------------
961# Enable less verbose build rules; with the default set to DEFAULT
962# ("yes" being less verbose, "no" or empty being verbose).
963AC_DEFUN([AM_SILENT_RULES],
964[AC_ARG_ENABLE([silent-rules], [dnl
965AS_HELP_STRING(
966  [--enable-silent-rules],
967  [less verbose build output (undo: "make V=1")])
968AS_HELP_STRING(
969  [--disable-silent-rules],
970  [verbose build output (undo: "make V=0")])dnl
971])
972case $enable_silent_rules in @%:@ (((
973  yes) AM_DEFAULT_VERBOSITY=0;;
974   no) AM_DEFAULT_VERBOSITY=1;;
975    *) AM_DEFAULT_VERBOSITY=m4_if([$1], [yes], [0], [1]);;
976esac
977dnl
978dnl A few 'make' implementations (e.g., NonStop OS and NextStep)
979dnl do not support nested variable expansions.
980dnl See automake bug#9928 and bug#10237.
981am_make=${MAKE-make}
982AC_CACHE_CHECK([whether $am_make supports nested variables],
983   [am_cv_make_support_nested_variables],
984   [if AS_ECHO([['TRUE=$(BAR$(V))
985BAR0=false
986BAR1=true
987V=1
988am__doit:
989	@$(TRUE)
990.PHONY: am__doit']]) | $am_make -f - >/dev/null 2>&1; then
991  am_cv_make_support_nested_variables=yes
992else
993  am_cv_make_support_nested_variables=no
994fi])
995if test $am_cv_make_support_nested_variables = yes; then
996  dnl Using '$V' instead of '$(V)' breaks IRIX make.
997  AM_V='$(V)'
998  AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
999else
1000  AM_V=$AM_DEFAULT_VERBOSITY
1001  AM_DEFAULT_V=$AM_DEFAULT_VERBOSITY
1002fi
1003AC_SUBST([AM_V])dnl
1004AM_SUBST_NOTMAKE([AM_V])dnl
1005AC_SUBST([AM_DEFAULT_V])dnl
1006AM_SUBST_NOTMAKE([AM_DEFAULT_V])dnl
1007AC_SUBST([AM_DEFAULT_VERBOSITY])dnl
1008AM_BACKSLASH='\'
1009AC_SUBST([AM_BACKSLASH])dnl
1010_AM_SUBST_NOTMAKE([AM_BACKSLASH])dnl
1011])
1012
1013# Copyright (C) 2001-2020 Free Software Foundation, Inc.
1014#
1015# This file is free software; the Free Software Foundation
1016# gives unlimited permission to copy and/or distribute it,
1017# with or without modifications, as long as this notice is preserved.
1018
1019# AM_PROG_INSTALL_STRIP
1020# ---------------------
1021# One issue with vendor 'install' (even GNU) is that you can't
1022# specify the program used to strip binaries.  This is especially
1023# annoying in cross-compiling environments, where the build's strip
1024# is unlikely to handle the host's binaries.
1025# Fortunately install-sh will honor a STRIPPROG variable, so we
1026# always use install-sh in "make install-strip", and initialize
1027# STRIPPROG with the value of the STRIP variable (set by the user).
1028AC_DEFUN([AM_PROG_INSTALL_STRIP],
1029[AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
1030# Installed binaries are usually stripped using 'strip' when the user
1031# run "make install-strip".  However 'strip' might not be the right
1032# tool to use in cross-compilation environments, therefore Automake
1033# will honor the 'STRIP' environment variable to overrule this program.
1034dnl Don't test for $cross_compiling = yes, because it might be 'maybe'.
1035if test "$cross_compiling" != no; then
1036  AC_CHECK_TOOL([STRIP], [strip], :)
1037fi
1038INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
1039AC_SUBST([INSTALL_STRIP_PROGRAM])])
1040
1041# Copyright (C) 2006-2020 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_SUBST_NOTMAKE(VARIABLE)
1048# ---------------------------
1049# Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in.
1050# This macro is traced by Automake.
1051AC_DEFUN([_AM_SUBST_NOTMAKE])
1052
1053# AM_SUBST_NOTMAKE(VARIABLE)
1054# --------------------------
1055# Public sister of _AM_SUBST_NOTMAKE.
1056AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
1057
1058# Check how to create a tarball.                            -*- Autoconf -*-
1059
1060# Copyright (C) 2004-2020 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_PROG_TAR(FORMAT)
1067# --------------------
1068# Check how to create a tarball in format FORMAT.
1069# FORMAT should be one of 'v7', 'ustar', or 'pax'.
1070#
1071# Substitute a variable $(am__tar) that is a command
1072# writing to stdout a FORMAT-tarball containing the directory
1073# $tardir.
1074#     tardir=directory && $(am__tar) > result.tar
1075#
1076# Substitute a variable $(am__untar) that extract such
1077# a tarball read from stdin.
1078#     $(am__untar) < result.tar
1079#
1080AC_DEFUN([_AM_PROG_TAR],
1081[# Always define AMTAR for backward compatibility.  Yes, it's still used
1082# in the wild :-(  We should find a proper way to deprecate it ...
1083AC_SUBST([AMTAR], ['$${TAR-tar}'])
1084
1085# We'll loop over all known methods to create a tar archive until one works.
1086_am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
1087
1088m4_if([$1], [v7],
1089  [am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'],
1090
1091  [m4_case([$1],
1092    [ustar],
1093     [# The POSIX 1988 'ustar' format is defined with fixed-size fields.
1094      # There is notably a 21 bits limit for the UID and the GID.  In fact,
1095      # the 'pax' utility can hang on bigger UID/GID (see automake bug#8343
1096      # and bug#13588).
1097      am_max_uid=2097151 # 2^21 - 1
1098      am_max_gid=$am_max_uid
1099      # The $UID and $GID variables are not portable, so we need to resort
1100      # to the POSIX-mandated id(1) utility.  Errors in the 'id' calls
1101      # below are definitely unexpected, so allow the users to see them
1102      # (that is, avoid stderr redirection).
1103      am_uid=`id -u || echo unknown`
1104      am_gid=`id -g || echo unknown`
1105      AC_MSG_CHECKING([whether UID '$am_uid' is supported by ustar format])
1106      if test $am_uid -le $am_max_uid; then
1107         AC_MSG_RESULT([yes])
1108      else
1109         AC_MSG_RESULT([no])
1110         _am_tools=none
1111      fi
1112      AC_MSG_CHECKING([whether GID '$am_gid' is supported by ustar format])
1113      if test $am_gid -le $am_max_gid; then
1114         AC_MSG_RESULT([yes])
1115      else
1116        AC_MSG_RESULT([no])
1117        _am_tools=none
1118      fi],
1119
1120  [pax],
1121    [],
1122
1123  [m4_fatal([Unknown tar format])])
1124
1125  AC_MSG_CHECKING([how to create a $1 tar archive])
1126
1127  # Go ahead even if we have the value already cached.  We do so because we
1128  # need to set the values for the 'am__tar' and 'am__untar' variables.
1129  _am_tools=${am_cv_prog_tar_$1-$_am_tools}
1130
1131  for _am_tool in $_am_tools; do
1132    case $_am_tool in
1133    gnutar)
1134      for _am_tar in tar gnutar gtar; do
1135        AM_RUN_LOG([$_am_tar --version]) && break
1136      done
1137      am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"'
1138      am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"'
1139      am__untar="$_am_tar -xf -"
1140      ;;
1141    plaintar)
1142      # Must skip GNU tar: if it does not support --format= it doesn't create
1143      # ustar tarball either.
1144      (tar --version) >/dev/null 2>&1 && continue
1145      am__tar='tar chf - "$$tardir"'
1146      am__tar_='tar chf - "$tardir"'
1147      am__untar='tar xf -'
1148      ;;
1149    pax)
1150      am__tar='pax -L -x $1 -w "$$tardir"'
1151      am__tar_='pax -L -x $1 -w "$tardir"'
1152      am__untar='pax -r'
1153      ;;
1154    cpio)
1155      am__tar='find "$$tardir" -print | cpio -o -H $1 -L'
1156      am__tar_='find "$tardir" -print | cpio -o -H $1 -L'
1157      am__untar='cpio -i -H $1 -d'
1158      ;;
1159    none)
1160      am__tar=false
1161      am__tar_=false
1162      am__untar=false
1163      ;;
1164    esac
1165
1166    # If the value was cached, stop now.  We just wanted to have am__tar
1167    # and am__untar set.
1168    test -n "${am_cv_prog_tar_$1}" && break
1169
1170    # tar/untar a dummy directory, and stop if the command works.
1171    rm -rf conftest.dir
1172    mkdir conftest.dir
1173    echo GrepMe > conftest.dir/file
1174    AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar])
1175    rm -rf conftest.dir
1176    if test -s conftest.tar; then
1177      AM_RUN_LOG([$am__untar <conftest.tar])
1178      AM_RUN_LOG([cat conftest.dir/file])
1179      grep GrepMe conftest.dir/file >/dev/null 2>&1 && break
1180    fi
1181  done
1182  rm -rf conftest.dir
1183
1184  AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])
1185  AC_MSG_RESULT([$am_cv_prog_tar_$1])])
1186
1187AC_SUBST([am__tar])
1188AC_SUBST([am__untar])
1189]) # _AM_PROG_TAR
1190
1191m4_include([m4/libtool.m4])
1192m4_include([m4/ltoptions.m4])
1193m4_include([m4/ltsugar.m4])
1194m4_include([m4/ltversion.m4])
1195m4_include([m4/lt~obsolete.m4])
1196m4_include([acinclude.m4])
1197