aclocal.m4

   1 # generated automatically by aclocal 1.15.1 -*- Autoconf -*-
   2
   3 # Copyright (C) 1996-2017 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
  14 m4_ifndef([AC_CONFIG_MACRO_DIRS], [m4_defun([_AM_CONFIG_MACRO_DIRS], [])m4_defun([AC_CONFIG_MACRO_DIRS], [_AM_CONFIG_MACRO_DIRS($@)])])
  15 m4_ifndef([AC_AUTOCONF_VERSION],
  16   [m4_copy([m4_PACKAGE_VERSION], [AC_AUTOCONF_VERSION])])dnl
  17 m4_if(m4_defn([AC_AUTOCONF_VERSION]), [2.69],,
  18 [m4_warning([this file was generated for autoconf 2.69.
  19 You have another version of autoconf.  It may work, but is not guaranteed to.
  20 If you have problems, you may need to regenerate the build system entirely.
  21 To do so, use the procedure documented by the package, typically 'autoreconf'.])])
  22
  23 # Copyright (C) 2002-2017 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.
  28
  29 # AM_AUTOMAKE_VERSION(VERSION)
  30 # ----------------------------
  31 # Automake X.Y traces this macro to ensure aclocal.m4 has been
  32 # generated from the m4 files accompanying Automake X.Y.
  33 # (This private macro should not be called outside this file.)
  34 AC_DEFUN([AM_AUTOMAKE_VERSION],
  35 [am__api_version='1.15'
  36 dnl Some users find AM_AUTOMAKE_VERSION and mistake it for a way to
  37 dnl require some minimum version.  Point them to the right macro.
  38 m4_if([$1], [1.15.1], [],
  39       [AC_FATAL([Do not call $0, use AM_INIT_AUTOMAKE([$1]).])])dnl
  40 ])
  41
  42 # _AM_AUTOCONF_VERSION(VERSION)
  43 # -----------------------------
  44 # aclocal traces this macro to find the Autoconf version.
  45 # This is a private macro too.  Using m4_define simplifies
  46 # the logic in aclocal, which can simply ignore this definition.
  47 m4_define([_AM_AUTOCONF_VERSION], [])
  48
  49 # AM_SET_CURRENT_AUTOMAKE_VERSION
  50 # -------------------------------
  51 # Call AM_AUTOMAKE_VERSION and AM_AUTOMAKE_VERSION so they can be traced.
  52 # This function is AC_REQUIREd by AM_INIT_AUTOMAKE.
  53 AC_DEFUN([AM_SET_CURRENT_AUTOMAKE_VERSION],
  54 [AM_AUTOMAKE_VERSION([1.15.1])dnl
  55 m4_ifndef([AC_AUTOCONF_VERSION],
  56   [m4_copy([m4_PACKAGE_VERSION], [AC_AUTOCONF_VERSION])])dnl
  57 _AM_AUTOCONF_VERSION(m4_defn([AC_AUTOCONF_VERSION]))])
  58
  59 # Figure out how to run the assembler.                      -*- Autoconf -*-
  60
  61 # Copyright (C) 2001-2017 Free Software Foundation, Inc.
  62 #
  63 # This file is free software; the Free Software Foundation
  64 # gives unlimited permission to copy and/or distribute it,
  65 # with or without modifications, as long as this notice is preserved.
  66
  67 # AM_PROG_AS
  68 # ----------
  69 AC_DEFUN([AM_PROG_AS],
  70 [# By default we simply use the C compiler to build assembly code.
  71 AC_REQUIRE([AC_PROG_CC])
  72 test "${CCAS+set}" = set || CCAS=$CC
  73 test "${CCASFLAGS+set}" = set || CCASFLAGS=$CFLAGS
  74 AC_ARG_VAR([CCAS],      [assembler compiler command (defaults to CC)])
  75 AC_ARG_VAR([CCASFLAGS], [assembler compiler flags (defaults to CFLAGS)])
  76 _AM_IF_OPTION([no-dependencies],, [_AM_DEPENDENCIES([CCAS])])dnl
  77 ])
  78
  79 # AM_AUX_DIR_EXPAND                                         -*- Autoconf -*-
  80
  81 # Copyright (C) 2001-2017 Free Software Foundation, Inc.
  82 #
  83 # This file is free software; the Free Software Foundation
  84 # gives unlimited permission to copy and/or distribute it,
  85 # with or without modifications, as long as this notice is preserved.
  86
  87 # For projects using AC_CONFIG_AUX_DIR([foo]), Autoconf sets
  88 # $ac_aux_dir to '$srcdir/foo'.  In other projects, it is set to
  89 # '$srcdir', '$srcdir/..', or '$srcdir/../..'.
  90 #
  91 # Of course, Automake must honor this variable whenever it calls a
  92 # tool from the auxiliary directory.  The problem is that $srcdir (and
  93 # therefore $ac_aux_dir as well) can be either absolute or relative,
  94 # depending on how configure is run.  This is pretty annoying, since
  95 # it makes $ac_aux_dir quite unusable in subdirectories: in the top
  96 # source directory, any form will work fine, but in subdirectories a
  97 # relative path needs to be adjusted first.
  98 #
  99 # $ac_aux_dir/missing
 100 #    fails when called from a subdirectory if $ac_aux_dir is relative
 101 # $top_srcdir/$ac_aux_dir/missing
 102 #    fails if $ac_aux_dir is absolute,
 103 #    fails when called from a subdirectory in a VPATH build with
 104 #          a relative $ac_aux_dir
 105 #
 106 # The reason of the latter failure is that $top_srcdir and $ac_aux_dir
 107 # are both prefixed by $srcdir.  In an in-source build this is usually
 108 # harmless because $srcdir is '.', but things will broke when you
 109 # start a VPATH build or use an absolute $srcdir.
 110 #
 111 # So we could use something similar to $top_srcdir/$ac_aux_dir/missing,
 112 # iff we strip the leading $srcdir from $ac_aux_dir.  That would be:
 113 #   am_aux_dir='\$(top_srcdir)/'`expr "$ac_aux_dir" : "$srcdir//*\(.*\)"`
 114 # and then we would define $MISSING as
 115 #   MISSING="\${SHELL} $am_aux_dir/missing"
 116 # This will work as long as MISSING is not called from configure, because
 117 # unfortunately $(top_srcdir) has no meaning in configure.
 118 # However there are other variables, like CC, which are often used in
 119 # configure, and could therefore not use this "fixed" $ac_aux_dir.
 120 #
 121 # Another solution, used here, is to always expand $ac_aux_dir to an
 122 # absolute PATH.  The drawback is that using absolute paths prevent a
 123 # configured tree to be moved without reconfiguration.
 124
 125 AC_DEFUN([AM_AUX_DIR_EXPAND],
 126 [AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT])dnl
 127 # Expand $ac_aux_dir to an absolute path.
 128 am_aux_dir=`cd "$ac_aux_dir" && pwd`
 129 ])
 130
 131 # AM_CONDITIONAL                                            -*- Autoconf -*-
 132
 133 # Copyright (C) 1997-2017 Free Software Foundation, Inc.
 134 #
 135 # This file is free software; the Free Software Foundation
 136 # gives unlimited permission to copy and/or distribute it,
 137 # with or without modifications, as long as this notice is preserved.
 138
 139 # AM_CONDITIONAL(NAME, SHELL-CONDITION)
 140 # -------------------------------------
 141 # Define a conditional.
 142 AC_DEFUN([AM_CONDITIONAL],
 143 [AC_PREREQ([2.52])dnl
 144  m4_if([$1], [TRUE],  [AC_FATAL([$0: invalid condition: $1])],
 145        [$1], [FALSE], [AC_FATAL([$0: invalid condition: $1])])dnl
 146 AC_SUBST([$1_TRUE])dnl
 147 AC_SUBST([$1_FALSE])dnl
 148 _AM_SUBST_NOTMAKE([$1_TRUE])dnl
 149 _AM_SUBST_NOTMAKE([$1_FALSE])dnl
 150 m4_define([_AM_COND_VALUE_$1], [$2])dnl
 151 if $2; then
 152   $1_TRUE=
 153   $1_FALSE='#'
 154 else
 155   $1_TRUE='#'
 156   $1_FALSE=
 157 fi
 158 AC_CONFIG_COMMANDS_PRE(
 159 [if test -z "${$1_TRUE}" && test -z "${$1_FALSE}"; then
 160   AC_MSG_ERROR([[conditional "$1" was never defined.
 161 Usually this means the macro was only invoked conditionally.]])
 162 fi])])
 163
 164 # Copyright (C) 1999-2017 Free Software Foundation, Inc.
 165 #
 166 # This file is free software; the Free Software Foundation
 167 # gives unlimited permission to copy and/or distribute it,
 168 # with or without modifications, as long as this notice is preserved.
 169
 170
 171 # There are a few dirty hacks below to avoid letting 'AC_PROG_CC' be
 172 # written in clear, in which case automake, when reading aclocal.m4,
 173 # will think it sees a *use*, and therefore will trigger all it's
 174 # C support machinery.  Also note that it means that autoscan, seeing
 175 # CC etc. in the Makefile, will ask for an AC_PROG_CC use...
 176
 177
 178 # _AM_DEPENDENCIES(NAME)
 179 # ----------------------
 180 # See how the compiler implements dependency checking.
 181 # NAME is "CC", "CXX", "OBJC", "OBJCXX", "UPC", or "GJC".
 182 # We try a few techniques and use that to set a single cache variable.
 183 #
 184 # We don't AC_REQUIRE the corresponding AC_PROG_CC since the latter was
 185 # modified to invoke _AM_DEPENDENCIES(CC); we would have a circular
 186 # dependency, and given that the user is not expected to run this macro,
 187 # just rely on AC_PROG_CC.
 188 AC_DEFUN([_AM_DEPENDENCIES],
 189 [AC_REQUIRE([AM_SET_DEPDIR])dnl
 190 AC_REQUIRE([AM_OUTPUT_DEPENDENCY_COMMANDS])dnl
 191 AC_REQUIRE([AM_MAKE_INCLUDE])dnl
 192 AC_REQUIRE([AM_DEP_TRACK])dnl
 193
 194 m4_if([$1], [CC],   [depcc="$CC"   am_compiler_list=],
 195       [$1], [CXX],  [depcc="$CXX"  am_compiler_list=],
 196       [$1], [OBJC], [depcc="$OBJC" am_compiler_list='gcc3 gcc'],
 197       [$1], [OBJCXX], [depcc="$OBJCXX" am_compiler_list='gcc3 gcc'],
 198       [$1], [UPC],  [depcc="$UPC"  am_compiler_list=],
 199       [$1], [GCJ],  [depcc="$GCJ"  am_compiler_list='gcc3 gcc'],
 200                     [depcc="$$1"   am_compiler_list=])
 201
 202 AC_CACHE_CHECK([dependency style of $depcc],
 203                [am_cv_$1_dependencies_compiler_type],
 204 [if test -z "$AMDEP_TRUE" && test -f "$am_depcomp"; then
 205   # We make a subdir and do the tests there.  Otherwise we can end up
 206   # making bogus files that we don't know about and never remove.  For
 207   # instance it was reported that on HP-UX the gcc test will end up
 208   # making a dummy file named 'D' -- because '-MD' means "put the output
 209   # in D".
 210   rm -rf conftest.dir
 211   mkdir conftest.dir
 212   # Copy depcomp to subdir because otherwise we won't find it if we're
 213   # using a relative directory.
 214   cp "$am_depcomp" conftest.dir
 215   cd conftest.dir
 216   # We will build objects and dependencies in a subdirectory because
 217   # it helps to detect inapplicable dependency modes.  For instance
 218   # both Tru64's cc and ICC support -MD to output dependencies as a
 219   # side effect of compilation, but ICC will put the dependencies in
 220   # the current directory while Tru64 will put them in the object
 221   # directory.
 222   mkdir sub
 223
 224   am_cv_$1_dependencies_compiler_type=none
 225   if test "$am_compiler_list" = ""; then
 226      am_compiler_list=`sed -n ['s/^#*\([a-zA-Z0-9]*\))$/\1/p'] < ./depcomp`
 227   fi
 228   am__universal=false
 229   m4_case([$1], [CC],
 230     [case " $depcc " in #(
 231      *\ -arch\ *\ -arch\ *) am__universal=true ;;
 232      esac],
 233     [CXX],
 234     [case " $depcc " in #(
 235      *\ -arch\ *\ -arch\ *) am__universal=true ;;
 236      esac])
 237
 238   for depmode in $am_compiler_list; do
 239     # Setup a source with many dependencies, because some compilers
 240     # like to wrap large dependency lists on column 80 (with \), and
 241     # we should not choose a depcomp mode which is confused by this.
 242     #
 243     # We need to recreate these files for each test, as the compiler may
 244     # overwrite some of them when testing with obscure command lines.
 245     # This happens at least with the AIX C compiler.
 246     : > sub/conftest.c
 247     for i in 1 2 3 4 5 6; do
 248       echo '#include "conftst'$i'.h"' >> sub/conftest.c
 249       # Using ": > sub/conftst$i.h" creates only sub/conftst1.h with
 250       # Solaris 10 /bin/sh.
 251       echo '/* dummy */' > sub/conftst$i.h
 252     done
 253     echo "${am__include} ${am__quote}sub/conftest.Po${am__quote}" > confmf
 254
 255     # We check with '-c' and '-o' for the sake of the "dashmstdout"
 256     # mode.  It turns out that the SunPro C++ compiler does not properly
 257     # handle '-M -o', and we need to detect this.  Also, some Intel
 258     # versions had trouble with output in subdirs.
 259     am__obj=sub/conftest.${OBJEXT-o}
 260     am__minus_obj="-o $am__obj"
 261     case $depmode in
 262     gcc)
 263       # This depmode causes a compiler race in universal mode.
 264       test "$am__universal" = false || continue
 265       ;;
 266     nosideeffect)
 267       # After this tag, mechanisms are not by side-effect, so they'll
 268       # only be used when explicitly requested.
 269       if test "x$enable_dependency_tracking" = xyes; then
 270         continue
 271       else
 272         break
 273       fi
 274       ;;
 275     msvc7 | msvc7msys | msvisualcpp | msvcmsys)
 276       # This compiler won't grok '-c -o', but also, the minuso test has
 277       # not run yet.  These depmodes are late enough in the game, and
 278       # so weak that their functioning should not be impacted.
 279       am__obj=conftest.${OBJEXT-o}
 280       am__minus_obj=
 281       ;;
 282     none) break ;;
 283     esac
 284     if depmode=$depmode \
 285        source=sub/conftest.c object=$am__obj \
 286        depfile=sub/conftest.Po tmpdepfile=sub/conftest.TPo \
 287        $SHELL ./depcomp $depcc -c $am__minus_obj sub/conftest.c \
 288          >/dev/null 2>conftest.err &&
 289        grep sub/conftst1.h sub/conftest.Po > /dev/null 2>&1 &&
 290        grep sub/conftst6.h sub/conftest.Po > /dev/null 2>&1 &&
 291        grep $am__obj sub/conftest.Po > /dev/null 2>&1 &&
 292        ${MAKE-make} -s -f confmf > /dev/null 2>&1; then
 293       # icc doesn't choke on unknown options, it will just issue warnings
 294       # or remarks (even with -Werror).  So we grep stderr for any message
 295       # that says an option was ignored or not supported.
 296       # When given -MP, icc 7.0 and 7.1 complain thusly:
 297       #   icc: Command line warning: ignoring option '-M'; no argument required
 298       # The diagnosis changed in icc 8.0:
 299       #   icc: Command line remark: option '-MP' not supported
 300       if (grep 'ignoring option' conftest.err ||
 301           grep 'not supported' conftest.err) >/dev/null 2>&1; then :; else
 302         am_cv_$1_dependencies_compiler_type=$depmode
 303         break
 304       fi
 305     fi
 306   done
 307
 308   cd ..
 309   rm -rf conftest.dir
 310 else
 311   am_cv_$1_dependencies_compiler_type=none
 312 fi
 313 ])
 314 AC_SUBST([$1DEPMODE], [depmode=$am_cv_$1_dependencies_compiler_type])
 315 AM_CONDITIONAL([am__fastdep$1], [
 316   test "x$enable_dependency_tracking" != xno \
 317   && test "$am_cv_$1_dependencies_compiler_type" = gcc3])
 318 ])
 319
 320
 321 # AM_SET_DEPDIR
 322 # -------------
 323 # Choose a directory name for dependency files.
 324 # This macro is AC_REQUIREd in _AM_DEPENDENCIES.
 325 AC_DEFUN([AM_SET_DEPDIR],
 326 [AC_REQUIRE([AM_SET_LEADING_DOT])dnl
 327 AC_SUBST([DEPDIR], ["${am__leading_dot}deps"])dnl
 328 ])
 329
 330
 331 # AM_DEP_TRACK
 332 # ------------
 333 AC_DEFUN([AM_DEP_TRACK],
 334 [AC_ARG_ENABLE([dependency-tracking], [dnl
 335 AS_HELP_STRING(
 336   [--enable-dependency-tracking],
 337   [do not reject slow dependency extractors])
 338 AS_HELP_STRING(
 339   [--disable-dependency-tracking],
 340   [speeds up one-time build])])
 341 if test "x$enable_dependency_tracking" != xno; then
 342   am_depcomp="$ac_aux_dir/depcomp"
 343   AMDEPBACKSLASH='\'
 344   am__nodep='_no'
 345 fi
 346 AM_CONDITIONAL([AMDEP], [test "x$enable_dependency_tracking" != xno])
 347 AC_SUBST([AMDEPBACKSLASH])dnl
 348 _AM_SUBST_NOTMAKE([AMDEPBACKSLASH])dnl
 349 AC_SUBST([am__nodep])dnl
 350 _AM_SUBST_NOTMAKE([am__nodep])dnl
 351 ])
 352
 353 # Generate code to set up dependency tracking.              -*- Autoconf -*-
 354
 355 # Copyright (C) 1999-2017 Free Software Foundation, Inc.
 356 #
 357 # This file is free software; the Free Software Foundation
 358 # gives unlimited permission to copy and/or distribute it,
 359 # with or without modifications, as long as this notice is preserved.
 360
 361
 362 # _AM_OUTPUT_DEPENDENCY_COMMANDS
 363 # ------------------------------
 364 AC_DEFUN([_AM_OUTPUT_DEPENDENCY_COMMANDS],
 365 [{
 366   # Older Autoconf quotes --file arguments for eval, but not when files
 367   # are listed without --file.  Let's play safe and only enable the eval
 368   # if we detect the quoting.
 369   case $CONFIG_FILES in
 370   *\'*) eval set x "$CONFIG_FILES" ;;
 371   *)   set x $CONFIG_FILES ;;
 372   esac
 373   shift
 374   for mf
 375   do
 376     # Strip MF so we end up with the name of the file.
 377     mf=`echo "$mf" | sed -e 's/:.*$//'`
 378     # Check whether this is an Automake generated Makefile or not.
 379     # We used to match only the files named 'Makefile.in', but
 380     # some people rename them; so instead we look at the file content.
 381     # Grep'ing the first line is not enough: some people post-process
 382     # each Makefile.in and add a new line on top of each file to say so.
 383     # Grep'ing the whole file is not good either: AIX grep has a line
 384     # limit of 2048, but all sed's we know have understand at least 4000.
 385     if sed -n 's,^#.*generated by automake.*,X,p' "$mf" | grep X >/dev/null 2>&1; then
 386       dirpart=`AS_DIRNAME("$mf")`
 387     else
 388       continue
 389     fi
 390     # Extract the definition of DEPDIR, am__include, and am__quote
 391     # from the Makefile without running 'make'.
 392     DEPDIR=`sed -n 's/^DEPDIR = //p' < "$mf"`
 393     test -z "$DEPDIR" && continue
 394     am__include=`sed -n 's/^am__include = //p' < "$mf"`
 395     test -z "$am__include" && continue
 396     am__quote=`sed -n 's/^am__quote = //p' < "$mf"`
 397     # Find all dependency output files, they are included files with
 398     # $(DEPDIR) in their names.  We invoke sed twice because it is the
 399     # simplest approach to changing $(DEPDIR) to its actual value in the
 400     # expansion.
 401     for file in `sed -n "
 402       s/^$am__include $am__quote\(.*(DEPDIR).*\)$am__quote"'$/\1/p' <"$mf" | \
 403          sed -e 's/\$(DEPDIR)/'"$DEPDIR"'/g'`; do
 404       # Make sure the directory exists.
 405       test -f "$dirpart/$file" && continue
 406       fdir=`AS_DIRNAME(["$file"])`
 407       AS_MKDIR_P([$dirpart/$fdir])
 408       # echo "creating $dirpart/$file"
 409       echo '# dummy' > "$dirpart/$file"
 410     done
 411   done
 412 }
 413 ])# _AM_OUTPUT_DEPENDENCY_COMMANDS
 414
 415
 416 # AM_OUTPUT_DEPENDENCY_COMMANDS
 417 # -----------------------------
 418 # This macro should only be invoked once -- use via AC_REQUIRE.
 419 #
 420 # This code is only required when automatic dependency tracking
 421 # is enabled.  FIXME.  This creates each '.P' file that we will
 422 # need in order to bootstrap the dependency handling code.
 423 AC_DEFUN([AM_OUTPUT_DEPENDENCY_COMMANDS],
 424 [AC_CONFIG_COMMANDS([depfiles],
 425      [test x"$AMDEP_TRUE" != x"" || _AM_OUTPUT_DEPENDENCY_COMMANDS],
 426      [AMDEP_TRUE="$AMDEP_TRUE" ac_aux_dir="$ac_aux_dir"])
 427 ])
 428
 429 # Do all the work for Automake.                             -*- Autoconf -*-
 430
 431 # Copyright (C) 1996-2017 Free Software Foundation, Inc.
 432 #
 433 # This file is free software; the Free Software Foundation
 434 # gives unlimited permission to copy and/or distribute it,
 435 # with or without modifications, as long as this notice is preserved.
 436
 437 # This macro actually does too much.  Some checks are only needed if
 438 # your package does certain things.  But this isn't really a big deal.
 439
 440 dnl Redefine AC_PROG_CC to automatically invoke _AM_PROG_CC_C_O.
 441 m4_define([AC_PROG_CC],
 442 m4_defn([AC_PROG_CC])
 443 [_AM_PROG_CC_C_O
 444 ])
 445
 446 # AM_INIT_AUTOMAKE(PACKAGE, VERSION, [NO-DEFINE])
 447 # AM_INIT_AUTOMAKE([OPTIONS])
 448 # -----------------------------------------------
 449 # The call with PACKAGE and VERSION arguments is the old style
 450 # call (pre autoconf-2.50), which is being phased out.  PACKAGE
 451 # and VERSION should now be passed to AC_INIT and removed from
 452 # the call to AM_INIT_AUTOMAKE.
 453 # We support both call styles for the transition.  After
 454 # the next Automake release, Autoconf can make the AC_INIT
 455 # arguments mandatory, and then we can depend on a new Autoconf
 456 # release and drop the old call support.
 457 AC_DEFUN([AM_INIT_AUTOMAKE],
 458 [AC_PREREQ([2.65])dnl
 459 dnl Autoconf wants to disallow AM_ names.  We explicitly allow
 460 dnl the ones we care about.
 461 m4_pattern_allow([^AM_[A-Z]+FLAGS$])dnl
 462 AC_REQUIRE([AM_SET_CURRENT_AUTOMAKE_VERSION])dnl
 463 AC_REQUIRE([AC_PROG_INSTALL])dnl
 464 if test "`cd $srcdir && pwd`" != "`pwd`"; then
 465   # Use -I$(srcdir) only when $(srcdir) != ., so that make's output
 466   # is not polluted with repeated "-I."
 467   AC_SUBST([am__isrc], [' -I$(srcdir)'])_AM_SUBST_NOTMAKE([am__isrc])dnl
 468   # test to see if srcdir already configured
 469   if test -f $srcdir/config.status; then
 470     AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
 471   fi
 472 fi
 473
 474 # test whether we have cygpath
 475 if test -z "$CYGPATH_W"; then
 476   if (cygpath --version) >/dev/null 2>/dev/null; then
 477     CYGPATH_W='cygpath -w'
 478   else
 479     CYGPATH_W=echo
 480   fi
 481 fi
 482 AC_SUBST([CYGPATH_W])
 483
 484 # Define the identity of the package.
 485 dnl Distinguish between old-style and new-style calls.
 486 m4_ifval([$2],
 487 [AC_DIAGNOSE([obsolete],
 488              [$0: two- and three-arguments forms are deprecated.])
 489 m4_ifval([$3], [_AM_SET_OPTION([no-define])])dnl
 490  AC_SUBST([PACKAGE], [$1])dnl
 491  AC_SUBST([VERSION], [$2])],
 492 [_AM_SET_OPTIONS([$1])dnl
 493 dnl Diagnose old-style AC_INIT with new-style AM_AUTOMAKE_INIT.
 494 m4_if(
 495   m4_ifdef([AC_PACKAGE_NAME], [ok]):m4_ifdef([AC_PACKAGE_VERSION], [ok]),
 496   [ok:ok],,
 497   [m4_fatal([AC_INIT should be called with package and version arguments])])dnl
 498  AC_SUBST([PACKAGE], ['AC_PACKAGE_TARNAME'])dnl
 499  AC_SUBST([VERSION], ['AC_PACKAGE_VERSION'])])dnl
 500
 501 _AM_IF_OPTION([no-define],,
 502 [AC_DEFINE_UNQUOTED([PACKAGE], ["$PACKAGE"], [Name of package])
 503  AC_DEFINE_UNQUOTED([VERSION], ["$VERSION"], [Version number of package])])dnl
 504
 505 # Some tools Automake needs.
 506 AC_REQUIRE([AM_SANITY_CHECK])dnl
 507 AC_REQUIRE([AC_ARG_PROGRAM])dnl
 508 AM_MISSING_PROG([ACLOCAL], [aclocal-${am__api_version}])
 509 AM_MISSING_PROG([AUTOCONF], [autoconf])
 510 AM_MISSING_PROG([AUTOMAKE], [automake-${am__api_version}])
 511 AM_MISSING_PROG([AUTOHEADER], [autoheader])
 512 AM_MISSING_PROG([MAKEINFO], [makeinfo])
 513 AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
 514 AC_REQUIRE([AM_PROG_INSTALL_STRIP])dnl
 515 AC_REQUIRE([AC_PROG_MKDIR_P])dnl
 516 # For better backward compatibility.  To be removed once Automake 1.9.x
 517 # dies out for good.  For more background, see:
 518 # <http://lists.gnu.org/archive/html/automake/2012-07/msg00001.html>
 519 # <http://lists.gnu.org/archive/html/automake/2012-07/msg00014.html>
 520 AC_SUBST([mkdir_p], ['$(MKDIR_P)'])
 521 # We need awk for the "check" target (and possibly the TAP driver).  The
 522 # system "awk" is bad on some platforms.
 523 AC_REQUIRE([AC_PROG_AWK])dnl
 524 AC_REQUIRE([AC_PROG_MAKE_SET])dnl
 525 AC_REQUIRE([AM_SET_LEADING_DOT])dnl
 526 _AM_IF_OPTION([tar-ustar], [_AM_PROG_TAR([ustar])],
 527               [_AM_IF_OPTION([tar-pax], [_AM_PROG_TAR([pax])],
 528                              [_AM_PROG_TAR([v7])])])
 529 _AM_IF_OPTION([no-dependencies],,
 530 [AC_PROVIDE_IFELSE([AC_PROG_CC],
 531                   [_AM_DEPENDENCIES([CC])],
 532                   [m4_define([AC_PROG_CC],
 533                              m4_defn([AC_PROG_CC])[_AM_DEPENDENCIES([CC])])])dnl
 534 AC_PROVIDE_IFELSE([AC_PROG_CXX],
 535                   [_AM_DEPENDENCIES([CXX])],
 536                   [m4_define([AC_PROG_CXX],
 537                              m4_defn([AC_PROG_CXX])[_AM_DEPENDENCIES([CXX])])])dnl
 538 AC_PROVIDE_IFELSE([AC_PROG_OBJC],
 539                   [_AM_DEPENDENCIES([OBJC])],
 540                   [m4_define([AC_PROG_OBJC],
 541                              m4_defn([AC_PROG_OBJC])[_AM_DEPENDENCIES([OBJC])])])dnl
 542 AC_PROVIDE_IFELSE([AC_PROG_OBJCXX],
 543                   [_AM_DEPENDENCIES([OBJCXX])],
 544                   [m4_define([AC_PROG_OBJCXX],
 545                              m4_defn([AC_PROG_OBJCXX])[_AM_DEPENDENCIES([OBJCXX])])])dnl
 546 ])
 547 AC_REQUIRE([AM_SILENT_RULES])dnl
 548 dnl The testsuite driver may need to know about EXEEXT, so add the
 549 dnl 'am__EXEEXT' conditional if _AM_COMPILER_EXEEXT was seen.  This
 550 dnl macro is hooked onto _AC_COMPILER_EXEEXT early, see below.
 551 AC_CONFIG_COMMANDS_PRE(dnl
 552 [m4_provide_if([_AM_COMPILER_EXEEXT],
 553   [AM_CONDITIONAL([am__EXEEXT], [test -n "$EXEEXT"])])])dnl
 554
 555 # POSIX will say in a future version that running "rm -f" with no argument
 556 # is OK; and we want to be able to make that assumption in our Makefile
 557 # recipes.  So use an aggressive probe to check that the usage we want is
 558 # actually supported "in the wild" to an acceptable degree.
 559 # See automake bug#10828.
 560 # To make any issue more visible, cause the running configure to be aborted
 561 # by default if the 'rm' program in use doesn't match our expectations; the
 562 # user can still override this though.
 563 if rm -f && rm -fr && rm -rf; then : OK; else
 564   cat >&2 <<'END'
 565 Oops!
 566
 567 Your 'rm' program seems unable to run without file operands specified
 568 on the command line, even when the '-f' option is present.  This is contrary
 569 to the behaviour of most rm programs out there, and not conforming with
 570 the upcoming POSIX standard: <http://austingroupbugs.net/view.php?id=542>
 571
 572 Please tell bug-automake@gnu.org about your system, including the value
 573 of your $PATH and any error possibly output before this message.  This
 574 can help us improve future automake versions.
 575
 576 END
 577   if test x"$ACCEPT_INFERIOR_RM_PROGRAM" = x"yes"; then
 578     echo 'Configuration will proceed anyway, since you have set the' >&2
 579     echo 'ACCEPT_INFERIOR_RM_PROGRAM variable to "yes"' >&2
 580     echo >&2
 581   else
 582     cat >&2 <<'END'
 583 Aborting the configuration process, to ensure you take notice of the issue.
 584
 585 You can download and install GNU coreutils to get an 'rm' implementation
 586 that behaves properly: <http://www.gnu.org/software/coreutils/>.
 587
 588 If you want to complete the configuration process using your problematic
 589 'rm' anyway, export the environment variable ACCEPT_INFERIOR_RM_PROGRAM
 590 to "yes", and re-run configure.
 591
 592 END
 593     AC_MSG_ERROR([Your 'rm' program is bad, sorry.])
 594   fi
 595 fi
 596 dnl The trailing newline in this macro's definition is deliberate, for
 597 dnl backward compatibility and to allow trailing 'dnl'-style comments
 598 dnl after the AM_INIT_AUTOMAKE invocation. See automake bug#16841.
 599 ])
 600
 601 dnl Hook into '_AC_COMPILER_EXEEXT' early to learn its expansion.  Do not
 602 dnl add the conditional right here, as _AC_COMPILER_EXEEXT may be further
 603 dnl mangled by Autoconf and run in a shell conditional statement.
 604 m4_define([_AC_COMPILER_EXEEXT],
 605 m4_defn([_AC_COMPILER_EXEEXT])[m4_provide([_AM_COMPILER_EXEEXT])])
 606
 607 # When config.status generates a header, we must update the stamp-h file.
 608 # This file resides in the same directory as the config header
 609 # that is generated.  The stamp files are numbered to have different names.
 610
 611 # Autoconf calls _AC_AM_CONFIG_HEADER_HOOK (when defined) in the
 612 # loop where config.status creates the headers, so we can generate
 613 # our stamp files there.
 614 AC_DEFUN([_AC_AM_CONFIG_HEADER_HOOK],
 615 [# Compute $1's index in $config_headers.
 616 _am_arg=$1
 617 _am_stamp_count=1
 618 for _am_header in $config_headers :; do
 619   case $_am_header in
 620     $_am_arg | $_am_arg:* )
 621       break ;;
 622     * )
 623       _am_stamp_count=`expr $_am_stamp_count + 1` ;;
 624   esac
 625 done
 626 echo "timestamp for $_am_arg" >`AS_DIRNAME(["$_am_arg"])`/stamp-h[]$_am_stamp_count])
 627
 628 # Copyright (C) 2001-2017 Free Software Foundation, Inc.
 629 #
 630 # This file is free software; the Free Software Foundation
 631 # gives unlimited permission to copy and/or distribute it,
 632 # with or without modifications, as long as this notice is preserved.
 633
 634 # AM_PROG_INSTALL_SH
 635 # ------------------
 636 # Define $install_sh.
 637 AC_DEFUN([AM_PROG_INSTALL_SH],
 638 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
 639 if test x"${install_sh+set}" != xset; then
 640   case $am_aux_dir in
 641   *\ * | *\     *)
 642     install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
 643   *)
 644     install_sh="\${SHELL} $am_aux_dir/install-sh"
 645   esac
 646 fi
 647 AC_SUBST([install_sh])])
 648
 649 # Copyright (C) 2003-2017 Free Software Foundation, Inc.
 650 #
 651 # This file is free software; the Free Software Foundation
 652 # gives unlimited permission to copy and/or distribute it,
 653 # with or without modifications, as long as this notice is preserved.
 654
 655 # Check whether the underlying file-system supports filenames
 656 # with a leading dot.  For instance MS-DOS doesn't.
 657 AC_DEFUN([AM_SET_LEADING_DOT],
 658 [rm -rf .tst 2>/dev/null
 659 mkdir .tst 2>/dev/null
 660 if test -d .tst; then
 661   am__leading_dot=.
 662 else
 663   am__leading_dot=_
 664 fi
 665 rmdir .tst 2>/dev/null
 666 AC_SUBST([am__leading_dot])])
 667
 668 # Add --enable-maintainer-mode option to configure.         -*- Autoconf -*-
 669 # From Jim Meyering
 670
 671 # Copyright (C) 1996-2017 Free Software Foundation, Inc.
 672 #
 673 # This file is free software; the Free Software Foundation
 674 # gives unlimited permission to copy and/or distribute it,
 675 # with or without modifications, as long as this notice is preserved.
 676
 677 # AM_MAINTAINER_MODE([DEFAULT-MODE])
 678 # ----------------------------------
 679 # Control maintainer-specific portions of Makefiles.
 680 # Default is to disable them, unless 'enable' is passed literally.
 681 # For symmetry, 'disable' may be passed as well.  Anyway, the user
 682 # can override the default with the --enable/--disable switch.
 683 AC_DEFUN([AM_MAINTAINER_MODE],
 684 [m4_case(m4_default([$1], [disable]),
 685        [enable], [m4_define([am_maintainer_other], [disable])],
 686        [disable], [m4_define([am_maintainer_other], [enable])],
 687        [m4_define([am_maintainer_other], [enable])
 688         m4_warn([syntax], [unexpected argument to AM@&t@_MAINTAINER_MODE: $1])])
 689 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
 690   dnl maintainer-mode's default is 'disable' unless 'enable' is passed
 691   AC_ARG_ENABLE([maintainer-mode],
 692     [AS_HELP_STRING([--]am_maintainer_other[-maintainer-mode],
 693       am_maintainer_other[ make rules and dependencies not useful
 694       (and sometimes confusing) to the casual installer])],
 695     [USE_MAINTAINER_MODE=$enableval],
 696     [USE_MAINTAINER_MODE=]m4_if(am_maintainer_other, [enable], [no], [yes]))
 697   AC_MSG_RESULT([$USE_MAINTAINER_MODE])
 698   AM_CONDITIONAL([MAINTAINER_MODE], [test $USE_MAINTAINER_MODE = yes])
 699   MAINT=$MAINTAINER_MODE_TRUE
 700   AC_SUBST([MAINT])dnl
 701 ]
 702 )
 703
 704 # Check to see how 'make' treats includes.                  -*- Autoconf -*-
 705
 706 # Copyright (C) 2001-2017 Free Software Foundation, Inc.
 707 #
 708 # This file is free software; the Free Software Foundation
 709 # gives unlimited permission to copy and/or distribute it,
 710 # with or without modifications, as long as this notice is preserved.
 711
 712 # AM_MAKE_INCLUDE()
 713 # -----------------
 714 # Check to see how make treats includes.
 715 AC_DEFUN([AM_MAKE_INCLUDE],
 716 [am_make=${MAKE-make}
 717 cat > confinc << 'END'
 718 am__doit:
 719         @echo this is the am__doit target
 720 .PHONY: am__doit
 721 END
 722 # If we don't find an include directive, just comment out the code.
 723 AC_MSG_CHECKING([for style of include used by $am_make])
 724 am__include="#"
 725 am__quote=
 726 _am_result=none
 727 # First try GNU make style include.
 728 echo "include confinc" > confmf
 729 # Ignore all kinds of additional output from 'make'.
 730 case `$am_make -s -f confmf 2> /dev/null` in #(
 731 *the\ am__doit\ target*)
 732   am__include=include
 733   am__quote=
 734   _am_result=GNU
 735   ;;
 736 esac
 737 # Now try BSD make style include.
 738 if test "$am__include" = "#"; then
 739    echo '.include "confinc"' > confmf
 740    case `$am_make -s -f confmf 2> /dev/null` in #(
 741    *the\ am__doit\ target*)
 742      am__include=.include
 743      am__quote="\""
 744      _am_result=BSD
 745      ;;
 746    esac
 747 fi
 748 AC_SUBST([am__include])
 749 AC_SUBST([am__quote])
 750 AC_MSG_RESULT([$_am_result])
 751 rm -f confinc confmf
 752 ])
 753
 754 # Fake the existence of programs that GNU maintainers use.  -*- Autoconf -*-
 755
 756 # Copyright (C) 1997-2017 Free Software Foundation, Inc.
 757 #
 758 # This file is free software; the Free Software Foundation
 759 # gives unlimited permission to copy and/or distribute it,
 760 # with or without modifications, as long as this notice is preserved.
 761
 762 # AM_MISSING_PROG(NAME, PROGRAM)
 763 # ------------------------------
 764 AC_DEFUN([AM_MISSING_PROG],
 765 [AC_REQUIRE([AM_MISSING_HAS_RUN])
 766 $1=${$1-"${am_missing_run}$2"}
 767 AC_SUBST($1)])
 768
 769 # AM_MISSING_HAS_RUN
 770 # ------------------
 771 # Define MISSING if not defined so far and test if it is modern enough.
 772 # If it is, set am_missing_run to use it, otherwise, to nothing.
 773 AC_DEFUN([AM_MISSING_HAS_RUN],
 774 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
 775 AC_REQUIRE_AUX_FILE([missing])dnl
 776 if test x"${MISSING+set}" != xset; then
 777   case $am_aux_dir in
 778   *\ * | *\     *)
 779     MISSING="\${SHELL} \"$am_aux_dir/missing\"" ;;
 780   *)
 781     MISSING="\${SHELL} $am_aux_dir/missing" ;;
 782   esac
 783 fi
 784 # Use eval to expand $SHELL
 785 if eval "$MISSING --is-lightweight"; then
 786   am_missing_run="$MISSING "
 787 else
 788   am_missing_run=
 789   AC_MSG_WARN(['missing' script is too old or missing])
 790 fi
 791 ])
 792
 793 # Helper functions for option handling.                     -*- Autoconf -*-
 794
 795 # Copyright (C) 2001-2017 Free Software Foundation, Inc.
 796 #
 797 # This file is free software; the Free Software Foundation
 798 # gives unlimited permission to copy and/or distribute it,
 799 # with or without modifications, as long as this notice is preserved.
 800
 801 # _AM_MANGLE_OPTION(NAME)
 802 # -----------------------
 803 AC_DEFUN([_AM_MANGLE_OPTION],
 804 [[_AM_OPTION_]m4_bpatsubst($1, [[^a-zA-Z0-9_]], [_])])
 805
 806 # _AM_SET_OPTION(NAME)
 807 # --------------------
 808 # Set option NAME.  Presently that only means defining a flag for this option.
 809 AC_DEFUN([_AM_SET_OPTION],
 810 [m4_define(_AM_MANGLE_OPTION([$1]), [1])])
 811
 812 # _AM_SET_OPTIONS(OPTIONS)
 813 # ------------------------
 814 # OPTIONS is a space-separated list of Automake options.
 815 AC_DEFUN([_AM_SET_OPTIONS],
 816 [m4_foreach_w([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])])
 817
 818 # _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET])
 819 # -------------------------------------------
 820 # Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
 821 AC_DEFUN([_AM_IF_OPTION],
 822 [m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])
 823
 824 # Copyright (C) 1999-2017 Free Software Foundation, Inc.
 825 #
 826 # This file is free software; the Free Software Foundation
 827 # gives unlimited permission to copy and/or distribute it,
 828 # with or without modifications, as long as this notice is preserved.
 829
 830 # _AM_PROG_CC_C_O
 831 # ---------------
 832 # Like AC_PROG_CC_C_O, but changed for automake.  We rewrite AC_PROG_CC
 833 # to automatically call this.
 834 AC_DEFUN([_AM_PROG_CC_C_O],
 835 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
 836 AC_REQUIRE_AUX_FILE([compile])dnl
 837 AC_LANG_PUSH([C])dnl
 838 AC_CACHE_CHECK(
 839   [whether $CC understands -c and -o together],
 840   [am_cv_prog_cc_c_o],
 841   [AC_LANG_CONFTEST([AC_LANG_PROGRAM([])])
 842   # Make sure it works both with $CC and with simple cc.
 843   # Following AC_PROG_CC_C_O, we do the test twice because some
 844   # compilers refuse to overwrite an existing .o file with -o,
 845   # though they will create one.
 846   am_cv_prog_cc_c_o=yes
 847   for am_i in 1 2; do
 848     if AM_RUN_LOG([$CC -c conftest.$ac_ext -o conftest2.$ac_objext]) \
 849          && test -f conftest2.$ac_objext; then
 850       : OK
 851     else
 852       am_cv_prog_cc_c_o=no
 853       break
 854     fi
 855   done
 856   rm -f core conftest*
 857   unset am_i])
 858 if test "$am_cv_prog_cc_c_o" != yes; then
 859    # Losing compiler, so override with the script.
 860    # FIXME: It is wrong to rewrite CC.
 861    # But if we don't then we get into trouble of one sort or another.
 862    # A longer-term fix would be to have automake use am__CC in this case,
 863    # and then we could set am__CC="\$(top_srcdir)/compile \$(CC)"
 864    CC="$am_aux_dir/compile $CC"
 865 fi
 866 AC_LANG_POP([C])])
 867
 868 # For backward compatibility.
 869 AC_DEFUN_ONCE([AM_PROG_CC_C_O], [AC_REQUIRE([AC_PROG_CC])])
 870
 871 # Copyright (C) 2001-2017 Free Software Foundation, Inc.
 872 #
 873 # This file is free software; the Free Software Foundation
 874 # gives unlimited permission to copy and/or distribute it,
 875 # with or without modifications, as long as this notice is preserved.
 876
 877 # AM_RUN_LOG(COMMAND)
 878 # -------------------
 879 # Run COMMAND, save the exit status in ac_status, and log it.
 880 # (This has been adapted from Autoconf's _AC_RUN_LOG macro.)
 881 AC_DEFUN([AM_RUN_LOG],
 882 [{ echo "$as_me:$LINENO: $1" >&AS_MESSAGE_LOG_FD
 883    ($1) >&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD
 884    ac_status=$?
 885    echo "$as_me:$LINENO: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
 886    (exit $ac_status); }])
 887
 888 # Check to make sure that the build environment is sane.    -*- Autoconf -*-
 889
 890 # Copyright (C) 1996-2017 Free Software Foundation, Inc.
 891 #
 892 # This file is free software; the Free Software Foundation
 893 # gives unlimited permission to copy and/or distribute it,
 894 # with or without modifications, as long as this notice is preserved.
 895
 896 # AM_SANITY_CHECK
 897 # ---------------
 898 AC_DEFUN([AM_SANITY_CHECK],
 899 [AC_MSG_CHECKING([whether build environment is sane])
 900 # Reject unsafe characters in $srcdir or the absolute working directory
 901 # name.  Accept space and tab only in the latter.
 902 am_lf='
 903 '
 904 case `pwd` in
 905   *[[\\\"\#\$\&\'\`$am_lf]]*)
 906     AC_MSG_ERROR([unsafe absolute working directory name]);;
 907 esac
 908 case $srcdir in
 909   *[[\\\"\#\$\&\'\`$am_lf\ \    ]]*)
 910     AC_MSG_ERROR([unsafe srcdir value: '$srcdir']);;
 911 esac
 912
 913 # Do 'set' in a subshell so we don't clobber the current shell's
 914 # arguments.  Must try -L first in case configure is actually a
 915 # symlink; some systems play weird games with the mod time of symlinks
 916 # (eg FreeBSD returns the mod time of the symlink's containing
 917 # directory).
 918 if (
 919    am_has_slept=no
 920    for am_try in 1 2; do
 921      echo "timestamp, slept: $am_has_slept" > conftest.file
 922      set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
 923      if test "$[*]" = "X"; then
 924         # -L didn't work.
 925         set X `ls -t "$srcdir/configure" conftest.file`
 926      fi
 927      if test "$[*]" != "X $srcdir/configure conftest.file" \
 928         && test "$[*]" != "X conftest.file $srcdir/configure"; then
 929
 930         # If neither matched, then we have a broken ls.  This can happen
 931         # if, for instance, CONFIG_SHELL is bash and it inherits a
 932         # broken ls alias from the environment.  This has actually
 933         # happened.  Such a system could not be considered "sane".
 934         AC_MSG_ERROR([ls -t appears to fail.  Make sure there is not a broken
 935   alias in your environment])
 936      fi
 937      if test "$[2]" = conftest.file || test $am_try -eq 2; then
 938        break
 939      fi
 940      # Just in case.
 941      sleep 1
 942      am_has_slept=yes
 943    done
 944    test "$[2]" = conftest.file
 945    )
 946 then
 947    # Ok.
 948    :
 949 else
 950    AC_MSG_ERROR([newly created file is older than distributed files!
 951 Check your system clock])
 952 fi
 953 AC_MSG_RESULT([yes])
 954 # If we didn't sleep, we still need to ensure time stamps of config.status and
 955 # generated files are strictly newer.
 956 am_sleep_pid=
 957 if grep 'slept: no' conftest.file >/dev/null 2>&1; then
 958   ( sleep 1 ) &
 959   am_sleep_pid=$!
 960 fi
 961 AC_CONFIG_COMMANDS_PRE(
 962   [AC_MSG_CHECKING([that generated files are newer than configure])
 963    if test -n "$am_sleep_pid"; then
 964      # Hide warnings about reused PIDs.
 965      wait $am_sleep_pid 2>/dev/null
 966    fi
 967    AC_MSG_RESULT([done])])
 968 rm -f conftest.file
 969 ])
 970
 971 # Copyright (C) 2009-2017 Free Software Foundation, Inc.
 972 #
 973 # This file is free software; the Free Software Foundation
 974 # gives unlimited permission to copy and/or distribute it,
 975 # with or without modifications, as long as this notice is preserved.
 976
 977 # AM_SILENT_RULES([DEFAULT])
 978 # --------------------------
 979 # Enable less verbose build rules; with the default set to DEFAULT
 980 # ("yes" being less verbose, "no" or empty being verbose).
 981 AC_DEFUN([AM_SILENT_RULES],
 982 [AC_ARG_ENABLE([silent-rules], [dnl
 983 AS_HELP_STRING(
 984   [--enable-silent-rules],
 985   [less verbose build output (undo: "make V=1")])
 986 AS_HELP_STRING(
 987   [--disable-silent-rules],
 988   [verbose build output (undo: "make V=0")])dnl
 989 ])
 990 case $enable_silent_rules in @%:@ (((
 991   yes) AM_DEFAULT_VERBOSITY=0;;
 992    no) AM_DEFAULT_VERBOSITY=1;;
 993     *) AM_DEFAULT_VERBOSITY=m4_if([$1], [yes], [0], [1]);;
 994 esac
 995 dnl
 996 dnl A few 'make' implementations (e.g., NonStop OS and NextStep)
 997 dnl do not support nested variable expansions.
 998 dnl See automake bug#9928 and bug#10237.
 999 am_make=${MAKE-make}
1000 AC_CACHE_CHECK([whether $am_make supports nested variables],
1001    [am_cv_make_support_nested_variables],
1002    [if AS_ECHO([['TRUE=$(BAR$(V))
1003 BAR0=false
1004 BAR1=true
1005 V=1
1006 am__doit:
1007         @$(TRUE)
1008 .PHONY: am__doit']]) | $am_make -f - >/dev/null 2>&1; then
1009   am_cv_make_support_nested_variables=yes
1010 else
1011   am_cv_make_support_nested_variables=no
1012 fi])
1013 if test $am_cv_make_support_nested_variables = yes; then
1014   dnl Using '$V' instead of '$(V)' breaks IRIX make.
1015   AM_V='$(V)'
1016   AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
1017 else
1018   AM_V=$AM_DEFAULT_VERBOSITY
1019   AM_DEFAULT_V=$AM_DEFAULT_VERBOSITY
1020 fi
1021 AC_SUBST([AM_V])dnl
1022 AM_SUBST_NOTMAKE([AM_V])dnl
1023 AC_SUBST([AM_DEFAULT_V])dnl
1024 AM_SUBST_NOTMAKE([AM_DEFAULT_V])dnl
1025 AC_SUBST([AM_DEFAULT_VERBOSITY])dnl
1026 AM_BACKSLASH='\'
1027 AC_SUBST([AM_BACKSLASH])dnl
1028 _AM_SUBST_NOTMAKE([AM_BACKSLASH])dnl
1029 ])
1030
1031 # Copyright (C) 2001-2017 Free Software Foundation, Inc.
1032 #
1033 # This file is free software; the Free Software Foundation
1034 # gives unlimited permission to copy and/or distribute it,
1035 # with or without modifications, as long as this notice is preserved.
1036
1037 # AM_PROG_INSTALL_STRIP
1038 # ---------------------
1039 # One issue with vendor 'install' (even GNU) is that you can't
1040 # specify the program used to strip binaries.  This is especially
1041 # annoying in cross-compiling environments, where the build's strip
1042 # is unlikely to handle the host's binaries.
1043 # Fortunately install-sh will honor a STRIPPROG variable, so we
1044 # always use install-sh in "make install-strip", and initialize
1045 # STRIPPROG with the value of the STRIP variable (set by the user).
1046 AC_DEFUN([AM_PROG_INSTALL_STRIP],
1047 [AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
1048 # Installed binaries are usually stripped using 'strip' when the user
1049 # run "make install-strip".  However 'strip' might not be the right
1050 # tool to use in cross-compilation environments, therefore Automake
1051 # will honor the 'STRIP' environment variable to overrule this program.
1052 dnl Don't test for $cross_compiling = yes, because it might be 'maybe'.
1053 if test "$cross_compiling" != no; then
1054   AC_CHECK_TOOL([STRIP], [strip], :)
1055 fi
1056 INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
1057 AC_SUBST([INSTALL_STRIP_PROGRAM])])
1058
1059 # Copyright (C) 2006-2017 Free Software Foundation, Inc.
1060 #
1061 # This file is free software; the Free Software Foundation
1062 # gives unlimited permission to copy and/or distribute it,
1063 # with or without modifications, as long as this notice is preserved.
1064
1065 # _AM_SUBST_NOTMAKE(VARIABLE)
1066 # ---------------------------
1067 # Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in.
1068 # This macro is traced by Automake.
1069 AC_DEFUN([_AM_SUBST_NOTMAKE])
1070
1071 # AM_SUBST_NOTMAKE(VARIABLE)
1072 # --------------------------
1073 # Public sister of _AM_SUBST_NOTMAKE.
1074 AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
1075
1076 # Check how to create a tarball.                            -*- Autoconf -*-
1077
1078 # Copyright (C) 2004-2017 Free Software Foundation, Inc.
1079 #
1080 # This file is free software; the Free Software Foundation
1081 # gives unlimited permission to copy and/or distribute it,
1082 # with or without modifications, as long as this notice is preserved.
1083
1084 # _AM_PROG_TAR(FORMAT)
1085 # --------------------
1086 # Check how to create a tarball in format FORMAT.
1087 # FORMAT should be one of 'v7', 'ustar', or 'pax'.
1088 #
1089 # Substitute a variable $(am__tar) that is a command
1090 # writing to stdout a FORMAT-tarball containing the directory
1091 # $tardir.
1092 #     tardir=directory && $(am__tar) > result.tar
1093 #
1094 # Substitute a variable $(am__untar) that extract such
1095 # a tarball read from stdin.
1096 #     $(am__untar) < result.tar
1097 #
1098 AC_DEFUN([_AM_PROG_TAR],
1099 [# Always define AMTAR for backward compatibility.  Yes, it's still used
1100 # in the wild :-(  We should find a proper way to deprecate it ...
1101 AC_SUBST([AMTAR], ['$${TAR-tar}'])
1102
1103 # We'll loop over all known methods to create a tar archive until one works.
1104 _am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
1105
1106 m4_if([$1], [v7],
1107   [am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'],
1108
1109   [m4_case([$1],
1110     [ustar],
1111      [# The POSIX 1988 'ustar' format is defined with fixed-size fields.
1112       # There is notably a 21 bits limit for the UID and the GID.  In fact,
1113       # the 'pax' utility can hang on bigger UID/GID (see automake bug#8343
1114       # and bug#13588).
1115       am_max_uid=2097151 # 2^21 - 1
1116       am_max_gid=$am_max_uid
1117       # The $UID and $GID variables are not portable, so we need to resort
1118       # to the POSIX-mandated id(1) utility.  Errors in the 'id' calls
1119       # below are definitely unexpected, so allow the users to see them
1120       # (that is, avoid stderr redirection).
1121       am_uid=`id -u || echo unknown`
1122       am_gid=`id -g || echo unknown`
1123       AC_MSG_CHECKING([whether UID '$am_uid' is supported by ustar format])
1124       if test $am_uid -le $am_max_uid; then
1125          AC_MSG_RESULT([yes])
1126       else
1127          AC_MSG_RESULT([no])
1128          _am_tools=none
1129       fi
1130       AC_MSG_CHECKING([whether GID '$am_gid' is supported by ustar format])
1131       if test $am_gid -le $am_max_gid; then
1132          AC_MSG_RESULT([yes])
1133       else
1134         AC_MSG_RESULT([no])
1135         _am_tools=none
1136       fi],
1137
1138   [pax],
1139     [],
1140
1141   [m4_fatal([Unknown tar format])])
1142
1143   AC_MSG_CHECKING([how to create a $1 tar archive])
1144
1145   # Go ahead even if we have the value already cached.  We do so because we
1146   # need to set the values for the 'am__tar' and 'am__untar' variables.
1147   _am_tools=${am_cv_prog_tar_$1-$_am_tools}
1148
1149   for _am_tool in $_am_tools; do
1150     case $_am_tool in
1151     gnutar)
1152       for _am_tar in tar gnutar gtar; do
1153         AM_RUN_LOG([$_am_tar --version]) && break
1154       done
1155       am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"'
1156       am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"'
1157       am__untar="$_am_tar -xf -"
1158       ;;
1159     plaintar)
1160       # Must skip GNU tar: if it does not support --format= it doesn't create
1161       # ustar tarball either.
1162       (tar --version) >/dev/null 2>&1 && continue
1163       am__tar='tar chf - "$$tardir"'
1164       am__tar_='tar chf - "$tardir"'
1165       am__untar='tar xf -'
1166       ;;
1167     pax)
1168       am__tar='pax -L -x $1 -w "$$tardir"'
1169       am__tar_='pax -L -x $1 -w "$tardir"'
1170       am__untar='pax -r'
1171       ;;
1172     cpio)
1173       am__tar='find "$$tardir" -print | cpio -o -H $1 -L'
1174       am__tar_='find "$tardir" -print | cpio -o -H $1 -L'
1175       am__untar='cpio -i -H $1 -d'
1176       ;;
1177     none)
1178       am__tar=false
1179       am__tar_=false
1180       am__untar=false
1181       ;;
1182     esac
1183
1184     # If the value was cached, stop now.  We just wanted to have am__tar
1185     # and am__untar set.
1186     test -n "${am_cv_prog_tar_$1}" && break
1187
1188     # tar/untar a dummy directory, and stop if the command works.
1189     rm -rf conftest.dir
1190     mkdir conftest.dir
1191     echo GrepMe > conftest.dir/file
1192     AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar])
1193     rm -rf conftest.dir
1194     if test -s conftest.tar; then
1195       AM_RUN_LOG([$am__untar <conftest.tar])
1196       AM_RUN_LOG([cat conftest.dir/file])
1197       grep GrepMe conftest.dir/file >/dev/null 2>&1 && break
1198     fi
1199   done
1200   rm -rf conftest.dir
1201
1202   AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])
1203   AC_MSG_RESULT([$am_cv_prog_tar_$1])])
1204
1205 AC_SUBST([am__tar])
1206 AC_SUBST([am__untar])
1207 ]) # _AM_PROG_TAR
1208
1209 m4_include([m4/pkg.m4])