1# generated automatically by aclocal 1.16.1 -*- Autoconf -*-
2
3# Copyright (C) 1996-2018 Free Software Foundation, Inc.
4
5# This file is free software; the Free Software Foundation
6# gives unlimited permission to copy and/or distribute it,
7# with or without modifications, as long as this notice is preserved.
8
9# This program is distributed in the hope that it will be useful,
10# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
11# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
12# PARTICULAR PURPOSE.
13
14m4_ifndef([AC_CONFIG_MACRO_DIRS], [m4_defun([_AM_CONFIG_MACRO_DIRS], [])m4_defun([AC_CONFIG_MACRO_DIRS], [_AM_CONFIG_MACRO_DIRS($@)])])
15m4_ifndef([AC_AUTOCONF_VERSION],
16  [m4_copy([m4_PACKAGE_VERSION], [AC_AUTOCONF_VERSION])])dnl
17m4_if(m4_defn([AC_AUTOCONF_VERSION]), [2.69],,
18[m4_warning([this file was generated for autoconf 2.69.
19You have another version of autoconf.  It may work, but is not guaranteed to.
20If you have problems, you may need to regenerate the build system entirely.
21To do so, use the procedure documented by the package, typically 'autoreconf'.])])
22
23dnl pkg.m4 - Macros to locate and utilise pkg-config.   -*- Autoconf -*-
24dnl serial 11 (pkg-config-0.29.1)
25dnl
26dnl Copyright © 2004 Scott James Remnant <scott@netsplit.com>.
27dnl Copyright © 2012-2015 Dan Nicholson <dbn.lists@gmail.com>
28dnl
29dnl This program is free software; you can redistribute it and/or modify
30dnl it under the terms of the GNU General Public License as published by
31dnl the Free Software Foundation; either version 2 of the License, or
32dnl (at your option) any later version.
33dnl
34dnl This program is distributed in the hope that it will be useful, but
35dnl WITHOUT ANY WARRANTY; without even the implied warranty of
36dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
37dnl General Public License for more details.
38dnl
39dnl You should have received a copy of the GNU General Public License
40dnl along with this program; if not, write to the Free Software
41dnl Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
42dnl 02111-1307, USA.
43dnl
44dnl As a special exception to the GNU General Public License, if you
45dnl distribute this file as part of a program that contains a
46dnl configuration script generated by Autoconf, you may include it under
47dnl the same distribution terms that you use for the rest of that
48dnl program.
49
50dnl PKG_PREREQ(MIN-VERSION)
51dnl -----------------------
52dnl Since: 0.29
53dnl
54dnl Verify that the version of the pkg-config macros are at least
55dnl MIN-VERSION. Unlike PKG_PROG_PKG_CONFIG, which checks the user's
56dnl installed version of pkg-config, this checks the developer's version
57dnl of pkg.m4 when generating configure.
58dnl
59dnl To ensure that this macro is defined, also add:
60dnl m4_ifndef([PKG_PREREQ],
61dnl     [m4_fatal([must install pkg-config 0.29 or later before running autoconf/autogen])])
62dnl
63dnl See the "Since" comment for each macro you use to see what version
64dnl of the macros you require.
65m4_defun([PKG_PREREQ],
66[m4_define([PKG_MACROS_VERSION], [0.29.1])
67m4_if(m4_version_compare(PKG_MACROS_VERSION, [$1]), -1,
68    [m4_fatal([pkg.m4 version $1 or higher is required but ]PKG_MACROS_VERSION[ found])])
69])dnl PKG_PREREQ
70
71dnl PKG_PROG_PKG_CONFIG([MIN-VERSION])
72dnl ----------------------------------
73dnl Since: 0.16
74dnl
75dnl Search for the pkg-config tool and set the PKG_CONFIG variable to
76dnl first found in the path. Checks that the version of pkg-config found
77dnl is at least MIN-VERSION. If MIN-VERSION is not specified, 0.9.0 is
78dnl used since that's the first version where most current features of
79dnl pkg-config existed.
80AC_DEFUN([PKG_PROG_PKG_CONFIG],
81[m4_pattern_forbid([^_?PKG_[A-Z_]+$])
82m4_pattern_allow([^PKG_CONFIG(_(PATH|LIBDIR|SYSROOT_DIR|ALLOW_SYSTEM_(CFLAGS|LIBS)))?$])
83m4_pattern_allow([^PKG_CONFIG_(DISABLE_UNINSTALLED|TOP_BUILD_DIR|DEBUG_SPEW)$])
84AC_ARG_VAR([PKG_CONFIG], [path to pkg-config utility])
85AC_ARG_VAR([PKG_CONFIG_PATH], [directories to add to pkg-config's search path])
86AC_ARG_VAR([PKG_CONFIG_LIBDIR], [path overriding pkg-config's built-in search path])
87
88if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then
89	AC_PATH_TOOL([PKG_CONFIG], [pkg-config])
90fi
91if test -n "$PKG_CONFIG"; then
92	_pkg_min_version=m4_default([$1], [0.9.0])
93	AC_MSG_CHECKING([pkg-config is at least version $_pkg_min_version])
94	if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then
95		AC_MSG_RESULT([yes])
96	else
97		AC_MSG_RESULT([no])
98		PKG_CONFIG=""
99	fi
100fi[]dnl
101])dnl PKG_PROG_PKG_CONFIG
102
103dnl PKG_CHECK_EXISTS(MODULES, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
104dnl -------------------------------------------------------------------
105dnl Since: 0.18
106dnl
107dnl Check to see whether a particular set of modules exists. Similar to
108dnl PKG_CHECK_MODULES(), but does not set variables or print errors.
109dnl
110dnl Please remember that m4 expands AC_REQUIRE([PKG_PROG_PKG_CONFIG])
111dnl only at the first occurence in configure.ac, so if the first place
112dnl it's called might be skipped (such as if it is within an "if", you
113dnl have to call PKG_CHECK_EXISTS manually
114AC_DEFUN([PKG_CHECK_EXISTS],
115[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
116if test -n "$PKG_CONFIG" && \
117    AC_RUN_LOG([$PKG_CONFIG --exists --print-errors "$1"]); then
118  m4_default([$2], [:])
119m4_ifvaln([$3], [else
120  $3])dnl
121fi])
122
123dnl _PKG_CONFIG([VARIABLE], [COMMAND], [MODULES])
124dnl ---------------------------------------------
125dnl Internal wrapper calling pkg-config via PKG_CONFIG and setting
126dnl pkg_failed based on the result.
127m4_define([_PKG_CONFIG],
128[if test -n "$$1"; then
129    pkg_cv_[]$1="$$1"
130 elif test -n "$PKG_CONFIG"; then
131    PKG_CHECK_EXISTS([$3],
132                     [pkg_cv_[]$1=`$PKG_CONFIG --[]$2 "$3" 2>/dev/null`
133		      test "x$?" != "x0" && pkg_failed=yes ],
134		     [pkg_failed=yes])
135 else
136    pkg_failed=untried
137fi[]dnl
138])dnl _PKG_CONFIG
139
140dnl _PKG_SHORT_ERRORS_SUPPORTED
141dnl ---------------------------
142dnl Internal check to see if pkg-config supports short errors.
143AC_DEFUN([_PKG_SHORT_ERRORS_SUPPORTED],
144[AC_REQUIRE([PKG_PROG_PKG_CONFIG])
145if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
146        _pkg_short_errors_supported=yes
147else
148        _pkg_short_errors_supported=no
149fi[]dnl
150])dnl _PKG_SHORT_ERRORS_SUPPORTED
151
152
153dnl PKG_CHECK_MODULES(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND],
154dnl   [ACTION-IF-NOT-FOUND])
155dnl --------------------------------------------------------------
156dnl Since: 0.4.0
157dnl
158dnl Note that if there is a possibility the first call to
159dnl PKG_CHECK_MODULES might not happen, you should be sure to include an
160dnl explicit call to PKG_PROG_PKG_CONFIG in your configure.ac
161AC_DEFUN([PKG_CHECK_MODULES],
162[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
163AC_ARG_VAR([$1][_CFLAGS], [C compiler flags for $1, overriding pkg-config])dnl
164AC_ARG_VAR([$1][_LIBS], [linker flags for $1, overriding pkg-config])dnl
165
166pkg_failed=no
167AC_MSG_CHECKING([for $1])
168
169_PKG_CONFIG([$1][_CFLAGS], [cflags], [$2])
170_PKG_CONFIG([$1][_LIBS], [libs], [$2])
171
172m4_define([_PKG_TEXT], [Alternatively, you may set the environment variables $1[]_CFLAGS
173and $1[]_LIBS to avoid the need to call pkg-config.
174See the pkg-config man page for more details.])
175
176if test $pkg_failed = yes; then
177   	AC_MSG_RESULT([no])
178        _PKG_SHORT_ERRORS_SUPPORTED
179        if test $_pkg_short_errors_supported = yes; then
180	        $1[]_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "$2" 2>&1`
181        else
182	        $1[]_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "$2" 2>&1`
183        fi
184	# Put the nasty error message in config.log where it belongs
185	echo "$$1[]_PKG_ERRORS" >&AS_MESSAGE_LOG_FD
186
187	m4_default([$4], [AC_MSG_ERROR(
188[Package requirements ($2) were not met:
189
190$$1_PKG_ERRORS
191
192Consider adjusting the PKG_CONFIG_PATH environment variable if you
193installed software in a non-standard prefix.
194
195_PKG_TEXT])[]dnl
196        ])
197elif test $pkg_failed = untried; then
198     	AC_MSG_RESULT([no])
199	m4_default([$4], [AC_MSG_FAILURE(
200[The pkg-config script could not be found or is too old.  Make sure it
201is in your PATH or set the PKG_CONFIG environment variable to the full
202path to pkg-config.
203
204_PKG_TEXT
205
206To get pkg-config, see <http://pkg-config.freedesktop.org/>.])[]dnl
207        ])
208else
209	$1[]_CFLAGS=$pkg_cv_[]$1[]_CFLAGS
210	$1[]_LIBS=$pkg_cv_[]$1[]_LIBS
211        AC_MSG_RESULT([yes])
212	$3
213fi[]dnl
214])dnl PKG_CHECK_MODULES
215
216
217dnl PKG_CHECK_MODULES_STATIC(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND],
218dnl   [ACTION-IF-NOT-FOUND])
219dnl ---------------------------------------------------------------------
220dnl Since: 0.29
221dnl
222dnl Checks for existence of MODULES and gathers its build flags with
223dnl static libraries enabled. Sets VARIABLE-PREFIX_CFLAGS from --cflags
224dnl and VARIABLE-PREFIX_LIBS from --libs.
225dnl
226dnl Note that if there is a possibility the first call to
227dnl PKG_CHECK_MODULES_STATIC might not happen, you should be sure to
228dnl include an explicit call to PKG_PROG_PKG_CONFIG in your
229dnl configure.ac.
230AC_DEFUN([PKG_CHECK_MODULES_STATIC],
231[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
232_save_PKG_CONFIG=$PKG_CONFIG
233PKG_CONFIG="$PKG_CONFIG --static"
234PKG_CHECK_MODULES($@)
235PKG_CONFIG=$_save_PKG_CONFIG[]dnl
236])dnl PKG_CHECK_MODULES_STATIC
237
238
239dnl PKG_INSTALLDIR([DIRECTORY])
240dnl -------------------------
241dnl Since: 0.27
242dnl
243dnl Substitutes the variable pkgconfigdir as the location where a module
244dnl should install pkg-config .pc files. By default the directory is
245dnl $libdir/pkgconfig, but the default can be changed by passing
246dnl DIRECTORY. The user can override through the --with-pkgconfigdir
247dnl parameter.
248AC_DEFUN([PKG_INSTALLDIR],
249[m4_pushdef([pkg_default], [m4_default([$1], ['${libdir}/pkgconfig'])])
250m4_pushdef([pkg_description],
251    [pkg-config installation directory @<:@]pkg_default[@:>@])
252AC_ARG_WITH([pkgconfigdir],
253    [AS_HELP_STRING([--with-pkgconfigdir], pkg_description)],,
254    [with_pkgconfigdir=]pkg_default)
255AC_SUBST([pkgconfigdir], [$with_pkgconfigdir])
256m4_popdef([pkg_default])
257m4_popdef([pkg_description])
258])dnl PKG_INSTALLDIR
259
260
261dnl PKG_NOARCH_INSTALLDIR([DIRECTORY])
262dnl --------------------------------
263dnl Since: 0.27
264dnl
265dnl Substitutes the variable noarch_pkgconfigdir as the location where a
266dnl module should install arch-independent pkg-config .pc files. By
267dnl default the directory is $datadir/pkgconfig, but the default can be
268dnl changed by passing DIRECTORY. The user can override through the
269dnl --with-noarch-pkgconfigdir parameter.
270AC_DEFUN([PKG_NOARCH_INSTALLDIR],
271[m4_pushdef([pkg_default], [m4_default([$1], ['${datadir}/pkgconfig'])])
272m4_pushdef([pkg_description],
273    [pkg-config arch-independent installation directory @<:@]pkg_default[@:>@])
274AC_ARG_WITH([noarch-pkgconfigdir],
275    [AS_HELP_STRING([--with-noarch-pkgconfigdir], pkg_description)],,
276    [with_noarch_pkgconfigdir=]pkg_default)
277AC_SUBST([noarch_pkgconfigdir], [$with_noarch_pkgconfigdir])
278m4_popdef([pkg_default])
279m4_popdef([pkg_description])
280])dnl PKG_NOARCH_INSTALLDIR
281
282
283dnl PKG_CHECK_VAR(VARIABLE, MODULE, CONFIG-VARIABLE,
284dnl [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
285dnl -------------------------------------------
286dnl Since: 0.28
287dnl
288dnl Retrieves the value of the pkg-config variable for the given module.
289AC_DEFUN([PKG_CHECK_VAR],
290[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
291AC_ARG_VAR([$1], [value of $3 for $2, overriding pkg-config])dnl
292
293_PKG_CONFIG([$1], [variable="][$3]["], [$2])
294AS_VAR_COPY([$1], [pkg_cv_][$1])
295
296AS_VAR_IF([$1], [""], [$5], [$4])dnl
297])dnl PKG_CHECK_VAR
298
299# Copyright (C) 2002-2018 Free Software Foundation, Inc.
300#
301# This file is free software; the Free Software Foundation
302# gives unlimited permission to copy and/or distribute it,
303# with or without modifications, as long as this notice is preserved.
304
305# AM_AUTOMAKE_VERSION(VERSION)
306# ----------------------------
307# Automake X.Y traces this macro to ensure aclocal.m4 has been
308# generated from the m4 files accompanying Automake X.Y.
309# (This private macro should not be called outside this file.)
310AC_DEFUN([AM_AUTOMAKE_VERSION],
311[am__api_version='1.16'
312dnl Some users find AM_AUTOMAKE_VERSION and mistake it for a way to
313dnl require some minimum version.  Point them to the right macro.
314m4_if([$1], [1.16.1], [],
315      [AC_FATAL([Do not call $0, use AM_INIT_AUTOMAKE([$1]).])])dnl
316])
317
318# _AM_AUTOCONF_VERSION(VERSION)
319# -----------------------------
320# aclocal traces this macro to find the Autoconf version.
321# This is a private macro too.  Using m4_define simplifies
322# the logic in aclocal, which can simply ignore this definition.
323m4_define([_AM_AUTOCONF_VERSION], [])
324
325# AM_SET_CURRENT_AUTOMAKE_VERSION
326# -------------------------------
327# Call AM_AUTOMAKE_VERSION and AM_AUTOMAKE_VERSION so they can be traced.
328# This function is AC_REQUIREd by AM_INIT_AUTOMAKE.
329AC_DEFUN([AM_SET_CURRENT_AUTOMAKE_VERSION],
330[AM_AUTOMAKE_VERSION([1.16.1])dnl
331m4_ifndef([AC_AUTOCONF_VERSION],
332  [m4_copy([m4_PACKAGE_VERSION], [AC_AUTOCONF_VERSION])])dnl
333_AM_AUTOCONF_VERSION(m4_defn([AC_AUTOCONF_VERSION]))])
334
335# AM_AUX_DIR_EXPAND                                         -*- Autoconf -*-
336
337# Copyright (C) 2001-2018 Free Software Foundation, Inc.
338#
339# This file is free software; the Free Software Foundation
340# gives unlimited permission to copy and/or distribute it,
341# with or without modifications, as long as this notice is preserved.
342
343# For projects using AC_CONFIG_AUX_DIR([foo]), Autoconf sets
344# $ac_aux_dir to '$srcdir/foo'.  In other projects, it is set to
345# '$srcdir', '$srcdir/..', or '$srcdir/../..'.
346#
347# Of course, Automake must honor this variable whenever it calls a
348# tool from the auxiliary directory.  The problem is that $srcdir (and
349# therefore $ac_aux_dir as well) can be either absolute or relative,
350# depending on how configure is run.  This is pretty annoying, since
351# it makes $ac_aux_dir quite unusable in subdirectories: in the top
352# source directory, any form will work fine, but in subdirectories a
353# relative path needs to be adjusted first.
354#
355# $ac_aux_dir/missing
356#    fails when called from a subdirectory if $ac_aux_dir is relative
357# $top_srcdir/$ac_aux_dir/missing
358#    fails if $ac_aux_dir is absolute,
359#    fails when called from a subdirectory in a VPATH build with
360#          a relative $ac_aux_dir
361#
362# The reason of the latter failure is that $top_srcdir and $ac_aux_dir
363# are both prefixed by $srcdir.  In an in-source build this is usually
364# harmless because $srcdir is '.', but things will broke when you
365# start a VPATH build or use an absolute $srcdir.
366#
367# So we could use something similar to $top_srcdir/$ac_aux_dir/missing,
368# iff we strip the leading $srcdir from $ac_aux_dir.  That would be:
369#   am_aux_dir='\$(top_srcdir)/'`expr "$ac_aux_dir" : "$srcdir//*\(.*\)"`
370# and then we would define $MISSING as
371#   MISSING="\${SHELL} $am_aux_dir/missing"
372# This will work as long as MISSING is not called from configure, because
373# unfortunately $(top_srcdir) has no meaning in configure.
374# However there are other variables, like CC, which are often used in
375# configure, and could therefore not use this "fixed" $ac_aux_dir.
376#
377# Another solution, used here, is to always expand $ac_aux_dir to an
378# absolute PATH.  The drawback is that using absolute paths prevent a
379# configured tree to be moved without reconfiguration.
380
381AC_DEFUN([AM_AUX_DIR_EXPAND],
382[AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT])dnl
383# Expand $ac_aux_dir to an absolute path.
384am_aux_dir=`cd "$ac_aux_dir" && pwd`
385])
386
387# AM_CONDITIONAL                                            -*- Autoconf -*-
388
389# Copyright (C) 1997-2018 Free Software Foundation, Inc.
390#
391# This file is free software; the Free Software Foundation
392# gives unlimited permission to copy and/or distribute it,
393# with or without modifications, as long as this notice is preserved.
394
395# AM_CONDITIONAL(NAME, SHELL-CONDITION)
396# -------------------------------------
397# Define a conditional.
398AC_DEFUN([AM_CONDITIONAL],
399[AC_PREREQ([2.52])dnl
400 m4_if([$1], [TRUE],  [AC_FATAL([$0: invalid condition: $1])],
401       [$1], [FALSE], [AC_FATAL([$0: invalid condition: $1])])dnl
402AC_SUBST([$1_TRUE])dnl
403AC_SUBST([$1_FALSE])dnl
404_AM_SUBST_NOTMAKE([$1_TRUE])dnl
405_AM_SUBST_NOTMAKE([$1_FALSE])dnl
406m4_define([_AM_COND_VALUE_$1], [$2])dnl
407if $2; then
408  $1_TRUE=
409  $1_FALSE='#'
410else
411  $1_TRUE='#'
412  $1_FALSE=
413fi
414AC_CONFIG_COMMANDS_PRE(
415[if test -z "${$1_TRUE}" && test -z "${$1_FALSE}"; then
416  AC_MSG_ERROR([[conditional "$1" was never defined.
417Usually this means the macro was only invoked conditionally.]])
418fi])])
419
420# Copyright (C) 1999-2018 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
426
427# There are a few dirty hacks below to avoid letting 'AC_PROG_CC' be
428# written in clear, in which case automake, when reading aclocal.m4,
429# will think it sees a *use*, and therefore will trigger all it's
430# C support machinery.  Also note that it means that autoscan, seeing
431# CC etc. in the Makefile, will ask for an AC_PROG_CC use...
432
433
434# _AM_DEPENDENCIES(NAME)
435# ----------------------
436# See how the compiler implements dependency checking.
437# NAME is "CC", "CXX", "OBJC", "OBJCXX", "UPC", or "GJC".
438# We try a few techniques and use that to set a single cache variable.
439#
440# We don't AC_REQUIRE the corresponding AC_PROG_CC since the latter was
441# modified to invoke _AM_DEPENDENCIES(CC); we would have a circular
442# dependency, and given that the user is not expected to run this macro,
443# just rely on AC_PROG_CC.
444AC_DEFUN([_AM_DEPENDENCIES],
445[AC_REQUIRE([AM_SET_DEPDIR])dnl
446AC_REQUIRE([AM_OUTPUT_DEPENDENCY_COMMANDS])dnl
447AC_REQUIRE([AM_MAKE_INCLUDE])dnl
448AC_REQUIRE([AM_DEP_TRACK])dnl
449
450m4_if([$1], [CC],   [depcc="$CC"   am_compiler_list=],
451      [$1], [CXX],  [depcc="$CXX"  am_compiler_list=],
452      [$1], [OBJC], [depcc="$OBJC" am_compiler_list='gcc3 gcc'],
453      [$1], [OBJCXX], [depcc="$OBJCXX" am_compiler_list='gcc3 gcc'],
454      [$1], [UPC],  [depcc="$UPC"  am_compiler_list=],
455      [$1], [GCJ],  [depcc="$GCJ"  am_compiler_list='gcc3 gcc'],
456                    [depcc="$$1"   am_compiler_list=])
457
458AC_CACHE_CHECK([dependency style of $depcc],
459               [am_cv_$1_dependencies_compiler_type],
460[if test -z "$AMDEP_TRUE" && test -f "$am_depcomp"; then
461  # We make a subdir and do the tests there.  Otherwise we can end up
462  # making bogus files that we don't know about and never remove.  For
463  # instance it was reported that on HP-UX the gcc test will end up
464  # making a dummy file named 'D' -- because '-MD' means "put the output
465  # in D".
466  rm -rf conftest.dir
467  mkdir conftest.dir
468  # Copy depcomp to subdir because otherwise we won't find it if we're
469  # using a relative directory.
470  cp "$am_depcomp" conftest.dir
471  cd conftest.dir
472  # We will build objects and dependencies in a subdirectory because
473  # it helps to detect inapplicable dependency modes.  For instance
474  # both Tru64's cc and ICC support -MD to output dependencies as a
475  # side effect of compilation, but ICC will put the dependencies in
476  # the current directory while Tru64 will put them in the object
477  # directory.
478  mkdir sub
479
480  am_cv_$1_dependencies_compiler_type=none
481  if test "$am_compiler_list" = ""; then
482     am_compiler_list=`sed -n ['s/^#*\([a-zA-Z0-9]*\))$/\1/p'] < ./depcomp`
483  fi
484  am__universal=false
485  m4_case([$1], [CC],
486    [case " $depcc " in #(
487     *\ -arch\ *\ -arch\ *) am__universal=true ;;
488     esac],
489    [CXX],
490    [case " $depcc " in #(
491     *\ -arch\ *\ -arch\ *) am__universal=true ;;
492     esac])
493
494  for depmode in $am_compiler_list; do
495    # Setup a source with many dependencies, because some compilers
496    # like to wrap large dependency lists on column 80 (with \), and
497    # we should not choose a depcomp mode which is confused by this.
498    #
499    # We need to recreate these files for each test, as the compiler may
500    # overwrite some of them when testing with obscure command lines.
501    # This happens at least with the AIX C compiler.
502    : > sub/conftest.c
503    for i in 1 2 3 4 5 6; do
504      echo '#include "conftst'$i'.h"' >> sub/conftest.c
505      # Using ": > sub/conftst$i.h" creates only sub/conftst1.h with
506      # Solaris 10 /bin/sh.
507      echo '/* dummy */' > sub/conftst$i.h
508    done
509    echo "${am__include} ${am__quote}sub/conftest.Po${am__quote}" > confmf
510
511    # We check with '-c' and '-o' for the sake of the "dashmstdout"
512    # mode.  It turns out that the SunPro C++ compiler does not properly
513    # handle '-M -o', and we need to detect this.  Also, some Intel
514    # versions had trouble with output in subdirs.
515    am__obj=sub/conftest.${OBJEXT-o}
516    am__minus_obj="-o $am__obj"
517    case $depmode in
518    gcc)
519      # This depmode causes a compiler race in universal mode.
520      test "$am__universal" = false || continue
521      ;;
522    nosideeffect)
523      # After this tag, mechanisms are not by side-effect, so they'll
524      # only be used when explicitly requested.
525      if test "x$enable_dependency_tracking" = xyes; then
526	continue
527      else
528	break
529      fi
530      ;;
531    msvc7 | msvc7msys | msvisualcpp | msvcmsys)
532      # This compiler won't grok '-c -o', but also, the minuso test has
533      # not run yet.  These depmodes are late enough in the game, and
534      # so weak that their functioning should not be impacted.
535      am__obj=conftest.${OBJEXT-o}
536      am__minus_obj=
537      ;;
538    none) break ;;
539    esac
540    if depmode=$depmode \
541       source=sub/conftest.c object=$am__obj \
542       depfile=sub/conftest.Po tmpdepfile=sub/conftest.TPo \
543       $SHELL ./depcomp $depcc -c $am__minus_obj sub/conftest.c \
544         >/dev/null 2>conftest.err &&
545       grep sub/conftst1.h sub/conftest.Po > /dev/null 2>&1 &&
546       grep sub/conftst6.h sub/conftest.Po > /dev/null 2>&1 &&
547       grep $am__obj sub/conftest.Po > /dev/null 2>&1 &&
548       ${MAKE-make} -s -f confmf > /dev/null 2>&1; then
549      # icc doesn't choke on unknown options, it will just issue warnings
550      # or remarks (even with -Werror).  So we grep stderr for any message
551      # that says an option was ignored or not supported.
552      # When given -MP, icc 7.0 and 7.1 complain thusly:
553      #   icc: Command line warning: ignoring option '-M'; no argument required
554      # The diagnosis changed in icc 8.0:
555      #   icc: Command line remark: option '-MP' not supported
556      if (grep 'ignoring option' conftest.err ||
557          grep 'not supported' conftest.err) >/dev/null 2>&1; then :; else
558        am_cv_$1_dependencies_compiler_type=$depmode
559        break
560      fi
561    fi
562  done
563
564  cd ..
565  rm -rf conftest.dir
566else
567  am_cv_$1_dependencies_compiler_type=none
568fi
569])
570AC_SUBST([$1DEPMODE], [depmode=$am_cv_$1_dependencies_compiler_type])
571AM_CONDITIONAL([am__fastdep$1], [
572  test "x$enable_dependency_tracking" != xno \
573  && test "$am_cv_$1_dependencies_compiler_type" = gcc3])
574])
575
576
577# AM_SET_DEPDIR
578# -------------
579# Choose a directory name for dependency files.
580# This macro is AC_REQUIREd in _AM_DEPENDENCIES.
581AC_DEFUN([AM_SET_DEPDIR],
582[AC_REQUIRE([AM_SET_LEADING_DOT])dnl
583AC_SUBST([DEPDIR], ["${am__leading_dot}deps"])dnl
584])
585
586
587# AM_DEP_TRACK
588# ------------
589AC_DEFUN([AM_DEP_TRACK],
590[AC_ARG_ENABLE([dependency-tracking], [dnl
591AS_HELP_STRING(
592  [--enable-dependency-tracking],
593  [do not reject slow dependency extractors])
594AS_HELP_STRING(
595  [--disable-dependency-tracking],
596  [speeds up one-time build])])
597if test "x$enable_dependency_tracking" != xno; then
598  am_depcomp="$ac_aux_dir/depcomp"
599  AMDEPBACKSLASH='\'
600  am__nodep='_no'
601fi
602AM_CONDITIONAL([AMDEP], [test "x$enable_dependency_tracking" != xno])
603AC_SUBST([AMDEPBACKSLASH])dnl
604_AM_SUBST_NOTMAKE([AMDEPBACKSLASH])dnl
605AC_SUBST([am__nodep])dnl
606_AM_SUBST_NOTMAKE([am__nodep])dnl
607])
608
609# Generate code to set up dependency tracking.              -*- Autoconf -*-
610
611# Copyright (C) 1999-2018 Free Software Foundation, Inc.
612#
613# This file is free software; the Free Software Foundation
614# gives unlimited permission to copy and/or distribute it,
615# with or without modifications, as long as this notice is preserved.
616
617# _AM_OUTPUT_DEPENDENCY_COMMANDS
618# ------------------------------
619AC_DEFUN([_AM_OUTPUT_DEPENDENCY_COMMANDS],
620[{
621  # Older Autoconf quotes --file arguments for eval, but not when files
622  # are listed without --file.  Let's play safe and only enable the eval
623  # if we detect the quoting.
624  # TODO: see whether this extra hack can be removed once we start
625  # requiring Autoconf 2.70 or later.
626  AS_CASE([$CONFIG_FILES],
627          [*\'*], [eval set x "$CONFIG_FILES"],
628          [*], [set x $CONFIG_FILES])
629  shift
630  # Used to flag and report bootstrapping failures.
631  am_rc=0
632  for am_mf
633  do
634    # Strip MF so we end up with the name of the file.
635    am_mf=`AS_ECHO(["$am_mf"]) | sed -e 's/:.*$//'`
636    # Check whether this is an Automake generated Makefile which includes
637    # dependency-tracking related rules and includes.
638    # Grep'ing the whole file directly is not great: AIX grep has a line
639    # limit of 2048, but all sed's we know have understand at least 4000.
640    sed -n 's,^am--depfiles:.*,X,p' "$am_mf" | grep X >/dev/null 2>&1 \
641      || continue
642    am_dirpart=`AS_DIRNAME(["$am_mf"])`
643    am_filepart=`AS_BASENAME(["$am_mf"])`
644    AM_RUN_LOG([cd "$am_dirpart" \
645      && sed -e '/# am--include-marker/d' "$am_filepart" \
646        | $MAKE -f - am--depfiles]) || am_rc=$?
647  done
648  if test $am_rc -ne 0; then
649    AC_MSG_FAILURE([Something went wrong bootstrapping makefile fragments
650    for automatic dependency tracking.  Try re-running configure with the
651    '--disable-dependency-tracking' option to at least be able to build
652    the package (albeit without support for automatic dependency tracking).])
653  fi
654  AS_UNSET([am_dirpart])
655  AS_UNSET([am_filepart])
656  AS_UNSET([am_mf])
657  AS_UNSET([am_rc])
658  rm -f conftest-deps.mk
659}
660])# _AM_OUTPUT_DEPENDENCY_COMMANDS
661
662
663# AM_OUTPUT_DEPENDENCY_COMMANDS
664# -----------------------------
665# This macro should only be invoked once -- use via AC_REQUIRE.
666#
667# This code is only required when automatic dependency tracking is enabled.
668# This creates each '.Po' and '.Plo' makefile fragment that we'll need in
669# order to bootstrap the dependency handling code.
670AC_DEFUN([AM_OUTPUT_DEPENDENCY_COMMANDS],
671[AC_CONFIG_COMMANDS([depfiles],
672     [test x"$AMDEP_TRUE" != x"" || _AM_OUTPUT_DEPENDENCY_COMMANDS],
673     [AMDEP_TRUE="$AMDEP_TRUE" MAKE="${MAKE-make}"])])
674
675# Do all the work for Automake.                             -*- Autoconf -*-
676
677# Copyright (C) 1996-2018 Free Software Foundation, Inc.
678#
679# This file is free software; the Free Software Foundation
680# gives unlimited permission to copy and/or distribute it,
681# with or without modifications, as long as this notice is preserved.
682
683# This macro actually does too much.  Some checks are only needed if
684# your package does certain things.  But this isn't really a big deal.
685
686dnl Redefine AC_PROG_CC to automatically invoke _AM_PROG_CC_C_O.
687m4_define([AC_PROG_CC],
688m4_defn([AC_PROG_CC])
689[_AM_PROG_CC_C_O
690])
691
692# AM_INIT_AUTOMAKE(PACKAGE, VERSION, [NO-DEFINE])
693# AM_INIT_AUTOMAKE([OPTIONS])
694# -----------------------------------------------
695# The call with PACKAGE and VERSION arguments is the old style
696# call (pre autoconf-2.50), which is being phased out.  PACKAGE
697# and VERSION should now be passed to AC_INIT and removed from
698# the call to AM_INIT_AUTOMAKE.
699# We support both call styles for the transition.  After
700# the next Automake release, Autoconf can make the AC_INIT
701# arguments mandatory, and then we can depend on a new Autoconf
702# release and drop the old call support.
703AC_DEFUN([AM_INIT_AUTOMAKE],
704[AC_PREREQ([2.65])dnl
705dnl Autoconf wants to disallow AM_ names.  We explicitly allow
706dnl the ones we care about.
707m4_pattern_allow([^AM_[A-Z]+FLAGS$])dnl
708AC_REQUIRE([AM_SET_CURRENT_AUTOMAKE_VERSION])dnl
709AC_REQUIRE([AC_PROG_INSTALL])dnl
710if test "`cd $srcdir && pwd`" != "`pwd`"; then
711  # Use -I$(srcdir) only when $(srcdir) != ., so that make's output
712  # is not polluted with repeated "-I."
713  AC_SUBST([am__isrc], [' -I$(srcdir)'])_AM_SUBST_NOTMAKE([am__isrc])dnl
714  # test to see if srcdir already configured
715  if test -f $srcdir/config.status; then
716    AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
717  fi
718fi
719
720# test whether we have cygpath
721if test -z "$CYGPATH_W"; then
722  if (cygpath --version) >/dev/null 2>/dev/null; then
723    CYGPATH_W='cygpath -w'
724  else
725    CYGPATH_W=echo
726  fi
727fi
728AC_SUBST([CYGPATH_W])
729
730# Define the identity of the package.
731dnl Distinguish between old-style and new-style calls.
732m4_ifval([$2],
733[AC_DIAGNOSE([obsolete],
734             [$0: two- and three-arguments forms are deprecated.])
735m4_ifval([$3], [_AM_SET_OPTION([no-define])])dnl
736 AC_SUBST([PACKAGE], [$1])dnl
737 AC_SUBST([VERSION], [$2])],
738[_AM_SET_OPTIONS([$1])dnl
739dnl Diagnose old-style AC_INIT with new-style AM_AUTOMAKE_INIT.
740m4_if(
741  m4_ifdef([AC_PACKAGE_NAME], [ok]):m4_ifdef([AC_PACKAGE_VERSION], [ok]),
742  [ok:ok],,
743  [m4_fatal([AC_INIT should be called with package and version arguments])])dnl
744 AC_SUBST([PACKAGE], ['AC_PACKAGE_TARNAME'])dnl
745 AC_SUBST([VERSION], ['AC_PACKAGE_VERSION'])])dnl
746
747_AM_IF_OPTION([no-define],,
748[AC_DEFINE_UNQUOTED([PACKAGE], ["$PACKAGE"], [Name of package])
749 AC_DEFINE_UNQUOTED([VERSION], ["$VERSION"], [Version number of package])])dnl
750
751# Some tools Automake needs.
752AC_REQUIRE([AM_SANITY_CHECK])dnl
753AC_REQUIRE([AC_ARG_PROGRAM])dnl
754AM_MISSING_PROG([ACLOCAL], [aclocal-${am__api_version}])
755AM_MISSING_PROG([AUTOCONF], [autoconf])
756AM_MISSING_PROG([AUTOMAKE], [automake-${am__api_version}])
757AM_MISSING_PROG([AUTOHEADER], [autoheader])
758AM_MISSING_PROG([MAKEINFO], [makeinfo])
759AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
760AC_REQUIRE([AM_PROG_INSTALL_STRIP])dnl
761AC_REQUIRE([AC_PROG_MKDIR_P])dnl
762# For better backward compatibility.  To be removed once Automake 1.9.x
763# dies out for good.  For more background, see:
764# <https://lists.gnu.org/archive/html/automake/2012-07/msg00001.html>
765# <https://lists.gnu.org/archive/html/automake/2012-07/msg00014.html>
766AC_SUBST([mkdir_p], ['$(MKDIR_P)'])
767# We need awk for the "check" target (and possibly the TAP driver).  The
768# system "awk" is bad on some platforms.
769AC_REQUIRE([AC_PROG_AWK])dnl
770AC_REQUIRE([AC_PROG_MAKE_SET])dnl
771AC_REQUIRE([AM_SET_LEADING_DOT])dnl
772_AM_IF_OPTION([tar-ustar], [_AM_PROG_TAR([ustar])],
773	      [_AM_IF_OPTION([tar-pax], [_AM_PROG_TAR([pax])],
774			     [_AM_PROG_TAR([v7])])])
775_AM_IF_OPTION([no-dependencies],,
776[AC_PROVIDE_IFELSE([AC_PROG_CC],
777		  [_AM_DEPENDENCIES([CC])],
778		  [m4_define([AC_PROG_CC],
779			     m4_defn([AC_PROG_CC])[_AM_DEPENDENCIES([CC])])])dnl
780AC_PROVIDE_IFELSE([AC_PROG_CXX],
781		  [_AM_DEPENDENCIES([CXX])],
782		  [m4_define([AC_PROG_CXX],
783			     m4_defn([AC_PROG_CXX])[_AM_DEPENDENCIES([CXX])])])dnl
784AC_PROVIDE_IFELSE([AC_PROG_OBJC],
785		  [_AM_DEPENDENCIES([OBJC])],
786		  [m4_define([AC_PROG_OBJC],
787			     m4_defn([AC_PROG_OBJC])[_AM_DEPENDENCIES([OBJC])])])dnl
788AC_PROVIDE_IFELSE([AC_PROG_OBJCXX],
789		  [_AM_DEPENDENCIES([OBJCXX])],
790		  [m4_define([AC_PROG_OBJCXX],
791			     m4_defn([AC_PROG_OBJCXX])[_AM_DEPENDENCIES([OBJCXX])])])dnl
792])
793AC_REQUIRE([AM_SILENT_RULES])dnl
794dnl The testsuite driver may need to know about EXEEXT, so add the
795dnl 'am__EXEEXT' conditional if _AM_COMPILER_EXEEXT was seen.  This
796dnl macro is hooked onto _AC_COMPILER_EXEEXT early, see below.
797AC_CONFIG_COMMANDS_PRE(dnl
798[m4_provide_if([_AM_COMPILER_EXEEXT],
799  [AM_CONDITIONAL([am__EXEEXT], [test -n "$EXEEXT"])])])dnl
800
801# POSIX will say in a future version that running "rm -f" with no argument
802# is OK; and we want to be able to make that assumption in our Makefile
803# recipes.  So use an aggressive probe to check that the usage we want is
804# actually supported "in the wild" to an acceptable degree.
805# See automake bug#10828.
806# To make any issue more visible, cause the running configure to be aborted
807# by default if the 'rm' program in use doesn't match our expectations; the
808# user can still override this though.
809if rm -f && rm -fr && rm -rf; then : OK; else
810  cat >&2 <<'END'
811Oops!
812
813Your 'rm' program seems unable to run without file operands specified
814on the command line, even when the '-f' option is present.  This is contrary
815to the behaviour of most rm programs out there, and not conforming with
816the upcoming POSIX standard: <http://austingroupbugs.net/view.php?id=542>
817
818Please tell bug-automake@gnu.org about your system, including the value
819of your $PATH and any error possibly output before this message.  This
820can help us improve future automake versions.
821
822END
823  if test x"$ACCEPT_INFERIOR_RM_PROGRAM" = x"yes"; then
824    echo 'Configuration will proceed anyway, since you have set the' >&2
825    echo 'ACCEPT_INFERIOR_RM_PROGRAM variable to "yes"' >&2
826    echo >&2
827  else
828    cat >&2 <<'END'
829Aborting the configuration process, to ensure you take notice of the issue.
830
831You can download and install GNU coreutils to get an 'rm' implementation
832that behaves properly: <https://www.gnu.org/software/coreutils/>.
833
834If you want to complete the configuration process using your problematic
835'rm' anyway, export the environment variable ACCEPT_INFERIOR_RM_PROGRAM
836to "yes", and re-run configure.
837
838END
839    AC_MSG_ERROR([Your 'rm' program is bad, sorry.])
840  fi
841fi
842dnl The trailing newline in this macro's definition is deliberate, for
843dnl backward compatibility and to allow trailing 'dnl'-style comments
844dnl after the AM_INIT_AUTOMAKE invocation. See automake bug#16841.
845])
846
847dnl Hook into '_AC_COMPILER_EXEEXT' early to learn its expansion.  Do not
848dnl add the conditional right here, as _AC_COMPILER_EXEEXT may be further
849dnl mangled by Autoconf and run in a shell conditional statement.
850m4_define([_AC_COMPILER_EXEEXT],
851m4_defn([_AC_COMPILER_EXEEXT])[m4_provide([_AM_COMPILER_EXEEXT])])
852
853# When config.status generates a header, we must update the stamp-h file.
854# This file resides in the same directory as the config header
855# that is generated.  The stamp files are numbered to have different names.
856
857# Autoconf calls _AC_AM_CONFIG_HEADER_HOOK (when defined) in the
858# loop where config.status creates the headers, so we can generate
859# our stamp files there.
860AC_DEFUN([_AC_AM_CONFIG_HEADER_HOOK],
861[# Compute $1's index in $config_headers.
862_am_arg=$1
863_am_stamp_count=1
864for _am_header in $config_headers :; do
865  case $_am_header in
866    $_am_arg | $_am_arg:* )
867      break ;;
868    * )
869      _am_stamp_count=`expr $_am_stamp_count + 1` ;;
870  esac
871done
872echo "timestamp for $_am_arg" >`AS_DIRNAME(["$_am_arg"])`/stamp-h[]$_am_stamp_count])
873
874# Copyright (C) 2001-2018 Free Software Foundation, Inc.
875#
876# This file is free software; the Free Software Foundation
877# gives unlimited permission to copy and/or distribute it,
878# with or without modifications, as long as this notice is preserved.
879
880# AM_PROG_INSTALL_SH
881# ------------------
882# Define $install_sh.
883AC_DEFUN([AM_PROG_INSTALL_SH],
884[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
885if test x"${install_sh+set}" != xset; then
886  case $am_aux_dir in
887  *\ * | *\	*)
888    install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
889  *)
890    install_sh="\${SHELL} $am_aux_dir/install-sh"
891  esac
892fi
893AC_SUBST([install_sh])])
894
895# Copyright (C) 2003-2018 Free Software Foundation, Inc.
896#
897# This file is free software; the Free Software Foundation
898# gives unlimited permission to copy and/or distribute it,
899# with or without modifications, as long as this notice is preserved.
900
901# Check whether the underlying file-system supports filenames
902# with a leading dot.  For instance MS-DOS doesn't.
903AC_DEFUN([AM_SET_LEADING_DOT],
904[rm -rf .tst 2>/dev/null
905mkdir .tst 2>/dev/null
906if test -d .tst; then
907  am__leading_dot=.
908else
909  am__leading_dot=_
910fi
911rmdir .tst 2>/dev/null
912AC_SUBST([am__leading_dot])])
913
914# Check to see how 'make' treats includes.	            -*- Autoconf -*-
915
916# Copyright (C) 2001-2018 Free Software Foundation, Inc.
917#
918# This file is free software; the Free Software Foundation
919# gives unlimited permission to copy and/or distribute it,
920# with or without modifications, as long as this notice is preserved.
921
922# AM_MAKE_INCLUDE()
923# -----------------
924# Check whether make has an 'include' directive that can support all
925# the idioms we need for our automatic dependency tracking code.
926AC_DEFUN([AM_MAKE_INCLUDE],
927[AC_MSG_CHECKING([whether ${MAKE-make} supports the include directive])
928cat > confinc.mk << 'END'
929am__doit:
930	@echo this is the am__doit target >confinc.out
931.PHONY: am__doit
932END
933am__include="#"
934am__quote=
935# BSD make does it like this.
936echo '.include "confinc.mk" # ignored' > confmf.BSD
937# Other make implementations (GNU, Solaris 10, AIX) do it like this.
938echo 'include confinc.mk # ignored' > confmf.GNU
939_am_result=no
940for s in GNU BSD; do
941  AM_RUN_LOG([${MAKE-make} -f confmf.$s && cat confinc.out])
942  AS_CASE([$?:`cat confinc.out 2>/dev/null`],
943      ['0:this is the am__doit target'],
944      [AS_CASE([$s],
945          [BSD], [am__include='.include' am__quote='"'],
946          [am__include='include' am__quote=''])])
947  if test "$am__include" != "#"; then
948    _am_result="yes ($s style)"
949    break
950  fi
951done
952rm -f confinc.* confmf.*
953AC_MSG_RESULT([${_am_result}])
954AC_SUBST([am__include])])
955AC_SUBST([am__quote])])
956
957# Fake the existence of programs that GNU maintainers use.  -*- Autoconf -*-
958
959# Copyright (C) 1997-2018 Free Software Foundation, Inc.
960#
961# This file is free software; the Free Software Foundation
962# gives unlimited permission to copy and/or distribute it,
963# with or without modifications, as long as this notice is preserved.
964
965# AM_MISSING_PROG(NAME, PROGRAM)
966# ------------------------------
967AC_DEFUN([AM_MISSING_PROG],
968[AC_REQUIRE([AM_MISSING_HAS_RUN])
969$1=${$1-"${am_missing_run}$2"}
970AC_SUBST($1)])
971
972# AM_MISSING_HAS_RUN
973# ------------------
974# Define MISSING if not defined so far and test if it is modern enough.
975# If it is, set am_missing_run to use it, otherwise, to nothing.
976AC_DEFUN([AM_MISSING_HAS_RUN],
977[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
978AC_REQUIRE_AUX_FILE([missing])dnl
979if test x"${MISSING+set}" != xset; then
980  case $am_aux_dir in
981  *\ * | *\	*)
982    MISSING="\${SHELL} \"$am_aux_dir/missing\"" ;;
983  *)
984    MISSING="\${SHELL} $am_aux_dir/missing" ;;
985  esac
986fi
987# Use eval to expand $SHELL
988if eval "$MISSING --is-lightweight"; then
989  am_missing_run="$MISSING "
990else
991  am_missing_run=
992  AC_MSG_WARN(['missing' script is too old or missing])
993fi
994])
995
996# Helper functions for option handling.                     -*- Autoconf -*-
997
998# Copyright (C) 2001-2018 Free Software Foundation, Inc.
999#
1000# This file is free software; the Free Software Foundation
1001# gives unlimited permission to copy and/or distribute it,
1002# with or without modifications, as long as this notice is preserved.
1003
1004# _AM_MANGLE_OPTION(NAME)
1005# -----------------------
1006AC_DEFUN([_AM_MANGLE_OPTION],
1007[[_AM_OPTION_]m4_bpatsubst($1, [[^a-zA-Z0-9_]], [_])])
1008
1009# _AM_SET_OPTION(NAME)
1010# --------------------
1011# Set option NAME.  Presently that only means defining a flag for this option.
1012AC_DEFUN([_AM_SET_OPTION],
1013[m4_define(_AM_MANGLE_OPTION([$1]), [1])])
1014
1015# _AM_SET_OPTIONS(OPTIONS)
1016# ------------------------
1017# OPTIONS is a space-separated list of Automake options.
1018AC_DEFUN([_AM_SET_OPTIONS],
1019[m4_foreach_w([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])])
1020
1021# _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET])
1022# -------------------------------------------
1023# Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
1024AC_DEFUN([_AM_IF_OPTION],
1025[m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])
1026
1027# Copyright (C) 1999-2018 Free Software Foundation, Inc.
1028#
1029# This file is free software; the Free Software Foundation
1030# gives unlimited permission to copy and/or distribute it,
1031# with or without modifications, as long as this notice is preserved.
1032
1033# _AM_PROG_CC_C_O
1034# ---------------
1035# Like AC_PROG_CC_C_O, but changed for automake.  We rewrite AC_PROG_CC
1036# to automatically call this.
1037AC_DEFUN([_AM_PROG_CC_C_O],
1038[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
1039AC_REQUIRE_AUX_FILE([compile])dnl
1040AC_LANG_PUSH([C])dnl
1041AC_CACHE_CHECK(
1042  [whether $CC understands -c and -o together],
1043  [am_cv_prog_cc_c_o],
1044  [AC_LANG_CONFTEST([AC_LANG_PROGRAM([])])
1045  # Make sure it works both with $CC and with simple cc.
1046  # Following AC_PROG_CC_C_O, we do the test twice because some
1047  # compilers refuse to overwrite an existing .o file with -o,
1048  # though they will create one.
1049  am_cv_prog_cc_c_o=yes
1050  for am_i in 1 2; do
1051    if AM_RUN_LOG([$CC -c conftest.$ac_ext -o conftest2.$ac_objext]) \
1052         && test -f conftest2.$ac_objext; then
1053      : OK
1054    else
1055      am_cv_prog_cc_c_o=no
1056      break
1057    fi
1058  done
1059  rm -f core conftest*
1060  unset am_i])
1061if test "$am_cv_prog_cc_c_o" != yes; then
1062   # Losing compiler, so override with the script.
1063   # FIXME: It is wrong to rewrite CC.
1064   # But if we don't then we get into trouble of one sort or another.
1065   # A longer-term fix would be to have automake use am__CC in this case,
1066   # and then we could set am__CC="\$(top_srcdir)/compile \$(CC)"
1067   CC="$am_aux_dir/compile $CC"
1068fi
1069AC_LANG_POP([C])])
1070
1071# For backward compatibility.
1072AC_DEFUN_ONCE([AM_PROG_CC_C_O], [AC_REQUIRE([AC_PROG_CC])])
1073
1074# Copyright (C) 1999-2018 Free Software Foundation, Inc.
1075#
1076# This file is free software; the Free Software Foundation
1077# gives unlimited permission to copy and/or distribute it,
1078# with or without modifications, as long as this notice is preserved.
1079
1080
1081# AM_PATH_PYTHON([MINIMUM-VERSION], [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
1082# ---------------------------------------------------------------------------
1083# Adds support for distributing Python modules and packages.  To
1084# install modules, copy them to $(pythondir), using the python_PYTHON
1085# automake variable.  To install a package with the same name as the
1086# automake package, install to $(pkgpythondir), or use the
1087# pkgpython_PYTHON automake variable.
1088#
1089# The variables $(pyexecdir) and $(pkgpyexecdir) are provided as
1090# locations to install python extension modules (shared libraries).
1091# Another macro is required to find the appropriate flags to compile
1092# extension modules.
1093#
1094# If your package is configured with a different prefix to python,
1095# users will have to add the install directory to the PYTHONPATH
1096# environment variable, or create a .pth file (see the python
1097# documentation for details).
1098#
1099# If the MINIMUM-VERSION argument is passed, AM_PATH_PYTHON will
1100# cause an error if the version of python installed on the system
1101# doesn't meet the requirement.  MINIMUM-VERSION should consist of
1102# numbers and dots only.
1103AC_DEFUN([AM_PATH_PYTHON],
1104 [
1105  dnl Find a Python interpreter.  Python versions prior to 2.0 are not
1106  dnl supported. (2.0 was released on October 16, 2000).
1107  m4_define_default([_AM_PYTHON_INTERPRETER_LIST],
1108[python python2 python3 dnl
1109 python3.9 python3.8 python3.7 python3.6 python3.5 python3.4 python3.3 dnl
1110 python3.2 python3.1 python3.0 dnl
1111 python2.7 python2.6 python2.5 python2.4 python2.3 python2.2 python2.1 dnl
1112 python2.0])
1113
1114  AC_ARG_VAR([PYTHON], [the Python interpreter])
1115
1116  m4_if([$1],[],[
1117    dnl No version check is needed.
1118    # Find any Python interpreter.
1119    if test -z "$PYTHON"; then
1120      AC_PATH_PROGS([PYTHON], _AM_PYTHON_INTERPRETER_LIST, :)
1121    fi
1122    am_display_PYTHON=python
1123  ], [
1124    dnl A version check is needed.
1125    if test -n "$PYTHON"; then
1126      # If the user set $PYTHON, use it and don't search something else.
1127      AC_MSG_CHECKING([whether $PYTHON version is >= $1])
1128      AM_PYTHON_CHECK_VERSION([$PYTHON], [$1],
1129			      [AC_MSG_RESULT([yes])],
1130			      [AC_MSG_RESULT([no])
1131			       AC_MSG_ERROR([Python interpreter is too old])])
1132      am_display_PYTHON=$PYTHON
1133    else
1134      # Otherwise, try each interpreter until we find one that satisfies
1135      # VERSION.
1136      AC_CACHE_CHECK([for a Python interpreter with version >= $1],
1137	[am_cv_pathless_PYTHON],[
1138	for am_cv_pathless_PYTHON in _AM_PYTHON_INTERPRETER_LIST none; do
1139	  test "$am_cv_pathless_PYTHON" = none && break
1140	  AM_PYTHON_CHECK_VERSION([$am_cv_pathless_PYTHON], [$1], [break])
1141	done])
1142      # Set $PYTHON to the absolute path of $am_cv_pathless_PYTHON.
1143      if test "$am_cv_pathless_PYTHON" = none; then
1144	PYTHON=:
1145      else
1146        AC_PATH_PROG([PYTHON], [$am_cv_pathless_PYTHON])
1147      fi
1148      am_display_PYTHON=$am_cv_pathless_PYTHON
1149    fi
1150  ])
1151
1152  if test "$PYTHON" = :; then
1153  dnl Run any user-specified action, or abort.
1154    m4_default([$3], [AC_MSG_ERROR([no suitable Python interpreter found])])
1155  else
1156
1157  dnl Query Python for its version number.  Getting [:3] seems to be
1158  dnl the best way to do this; it's what "site.py" does in the standard
1159  dnl library.
1160
1161  AC_CACHE_CHECK([for $am_display_PYTHON version], [am_cv_python_version],
1162    [am_cv_python_version=`$PYTHON -c "import sys; sys.stdout.write(sys.version[[:3]])"`])
1163  AC_SUBST([PYTHON_VERSION], [$am_cv_python_version])
1164
1165  dnl Use the values of $prefix and $exec_prefix for the corresponding
1166  dnl values of PYTHON_PREFIX and PYTHON_EXEC_PREFIX.  These are made
1167  dnl distinct variables so they can be overridden if need be.  However,
1168  dnl general consensus is that you shouldn't need this ability.
1169
1170  AC_SUBST([PYTHON_PREFIX], ['${prefix}'])
1171  AC_SUBST([PYTHON_EXEC_PREFIX], ['${exec_prefix}'])
1172
1173  dnl At times (like when building shared libraries) you may want
1174  dnl to know which OS platform Python thinks this is.
1175
1176  AC_CACHE_CHECK([for $am_display_PYTHON platform], [am_cv_python_platform],
1177    [am_cv_python_platform=`$PYTHON -c "import sys; sys.stdout.write(sys.platform)"`])
1178  AC_SUBST([PYTHON_PLATFORM], [$am_cv_python_platform])
1179
1180  # Just factor out some code duplication.
1181  am_python_setup_sysconfig="\
1182import sys
1183# Prefer sysconfig over distutils.sysconfig, for better compatibility
1184# with python 3.x.  See automake bug#10227.
1185try:
1186    import sysconfig
1187except ImportError:
1188    can_use_sysconfig = 0
1189else:
1190    can_use_sysconfig = 1
1191# Can't use sysconfig in CPython 2.7, since it's broken in virtualenvs:
1192# <https://github.com/pypa/virtualenv/issues/118>
1193try:
1194    from platform import python_implementation
1195    if python_implementation() == 'CPython' and sys.version[[:3]] == '2.7':
1196        can_use_sysconfig = 0
1197except ImportError:
1198    pass"
1199
1200  dnl Set up 4 directories:
1201
1202  dnl pythondir -- where to install python scripts.  This is the
1203  dnl   site-packages directory, not the python standard library
1204  dnl   directory like in previous automake betas.  This behavior
1205  dnl   is more consistent with lispdir.m4 for example.
1206  dnl Query distutils for this directory.
1207  AC_CACHE_CHECK([for $am_display_PYTHON script directory],
1208    [am_cv_python_pythondir],
1209    [if test "x$prefix" = xNONE
1210     then
1211       am_py_prefix=$ac_default_prefix
1212     else
1213       am_py_prefix=$prefix
1214     fi
1215     am_cv_python_pythondir=`$PYTHON -c "
1216$am_python_setup_sysconfig
1217if can_use_sysconfig:
1218    sitedir = sysconfig.get_path('purelib', vars={'base':'$am_py_prefix'})
1219else:
1220    from distutils import sysconfig
1221    sitedir = sysconfig.get_python_lib(0, 0, prefix='$am_py_prefix')
1222sys.stdout.write(sitedir)"`
1223     case $am_cv_python_pythondir in
1224     $am_py_prefix*)
1225       am__strip_prefix=`echo "$am_py_prefix" | sed 's|.|.|g'`
1226       am_cv_python_pythondir=`echo "$am_cv_python_pythondir" | sed "s,^$am__strip_prefix,$PYTHON_PREFIX,"`
1227       ;;
1228     *)
1229       case $am_py_prefix in
1230         /usr|/System*) ;;
1231         *)
1232	  am_cv_python_pythondir=$PYTHON_PREFIX/lib/python$PYTHON_VERSION/site-packages
1233	  ;;
1234       esac
1235       ;;
1236     esac
1237    ])
1238  AC_SUBST([pythondir], [$am_cv_python_pythondir])
1239
1240  dnl pkgpythondir -- $PACKAGE directory under pythondir.  Was
1241  dnl   PYTHON_SITE_PACKAGE in previous betas, but this naming is
1242  dnl   more consistent with the rest of automake.
1243
1244  AC_SUBST([pkgpythondir], [\${pythondir}/$PACKAGE])
1245
1246  dnl pyexecdir -- directory for installing python extension modules
1247  dnl   (shared libraries)
1248  dnl Query distutils for this directory.
1249  AC_CACHE_CHECK([for $am_display_PYTHON extension module directory],
1250    [am_cv_python_pyexecdir],
1251    [if test "x$exec_prefix" = xNONE
1252     then
1253       am_py_exec_prefix=$am_py_prefix
1254     else
1255       am_py_exec_prefix=$exec_prefix
1256     fi
1257     am_cv_python_pyexecdir=`$PYTHON -c "
1258$am_python_setup_sysconfig
1259if can_use_sysconfig:
1260    sitedir = sysconfig.get_path('platlib', vars={'platbase':'$am_py_prefix'})
1261else:
1262    from distutils import sysconfig
1263    sitedir = sysconfig.get_python_lib(1, 0, prefix='$am_py_prefix')
1264sys.stdout.write(sitedir)"`
1265     case $am_cv_python_pyexecdir in
1266     $am_py_exec_prefix*)
1267       am__strip_prefix=`echo "$am_py_exec_prefix" | sed 's|.|.|g'`
1268       am_cv_python_pyexecdir=`echo "$am_cv_python_pyexecdir" | sed "s,^$am__strip_prefix,$PYTHON_EXEC_PREFIX,"`
1269       ;;
1270     *)
1271       case $am_py_exec_prefix in
1272         /usr|/System*) ;;
1273         *)
1274	   am_cv_python_pyexecdir=$PYTHON_EXEC_PREFIX/lib/python$PYTHON_VERSION/site-packages
1275	   ;;
1276       esac
1277       ;;
1278     esac
1279    ])
1280  AC_SUBST([pyexecdir], [$am_cv_python_pyexecdir])
1281
1282  dnl pkgpyexecdir -- $(pyexecdir)/$(PACKAGE)
1283
1284  AC_SUBST([pkgpyexecdir], [\${pyexecdir}/$PACKAGE])
1285
1286  dnl Run any user-specified action.
1287  $2
1288  fi
1289
1290])
1291
1292
1293# AM_PYTHON_CHECK_VERSION(PROG, VERSION, [ACTION-IF-TRUE], [ACTION-IF-FALSE])
1294# ---------------------------------------------------------------------------
1295# Run ACTION-IF-TRUE if the Python interpreter PROG has version >= VERSION.
1296# Run ACTION-IF-FALSE otherwise.
1297# This test uses sys.hexversion instead of the string equivalent (first
1298# word of sys.version), in order to cope with versions such as 2.2c1.
1299# This supports Python 2.0 or higher. (2.0 was released on October 16, 2000).
1300AC_DEFUN([AM_PYTHON_CHECK_VERSION],
1301 [prog="import sys
1302# split strings by '.' and convert to numeric.  Append some zeros
1303# because we need at least 4 digits for the hex conversion.
1304# map returns an iterator in Python 3.0 and a list in 2.x
1305minver = list(map(int, '$2'.split('.'))) + [[0, 0, 0]]
1306minverhex = 0
1307# xrange is not present in Python 3.0 and range returns an iterator
1308for i in list(range(0, 4)): minverhex = (minverhex << 8) + minver[[i]]
1309sys.exit(sys.hexversion < minverhex)"
1310  AS_IF([AM_RUN_LOG([$1 -c "$prog"])], [$3], [$4])])
1311
1312# Copyright (C) 2001-2018 Free Software Foundation, Inc.
1313#
1314# This file is free software; the Free Software Foundation
1315# gives unlimited permission to copy and/or distribute it,
1316# with or without modifications, as long as this notice is preserved.
1317
1318# AM_RUN_LOG(COMMAND)
1319# -------------------
1320# Run COMMAND, save the exit status in ac_status, and log it.
1321# (This has been adapted from Autoconf's _AC_RUN_LOG macro.)
1322AC_DEFUN([AM_RUN_LOG],
1323[{ echo "$as_me:$LINENO: $1" >&AS_MESSAGE_LOG_FD
1324   ($1) >&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD
1325   ac_status=$?
1326   echo "$as_me:$LINENO: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
1327   (exit $ac_status); }])
1328
1329# Check to make sure that the build environment is sane.    -*- Autoconf -*-
1330
1331# Copyright (C) 1996-2018 Free Software Foundation, Inc.
1332#
1333# This file is free software; the Free Software Foundation
1334# gives unlimited permission to copy and/or distribute it,
1335# with or without modifications, as long as this notice is preserved.
1336
1337# AM_SANITY_CHECK
1338# ---------------
1339AC_DEFUN([AM_SANITY_CHECK],
1340[AC_MSG_CHECKING([whether build environment is sane])
1341# Reject unsafe characters in $srcdir or the absolute working directory
1342# name.  Accept space and tab only in the latter.
1343am_lf='
1344'
1345case `pwd` in
1346  *[[\\\"\#\$\&\'\`$am_lf]]*)
1347    AC_MSG_ERROR([unsafe absolute working directory name]);;
1348esac
1349case $srcdir in
1350  *[[\\\"\#\$\&\'\`$am_lf\ \	]]*)
1351    AC_MSG_ERROR([unsafe srcdir value: '$srcdir']);;
1352esac
1353
1354# Do 'set' in a subshell so we don't clobber the current shell's
1355# arguments.  Must try -L first in case configure is actually a
1356# symlink; some systems play weird games with the mod time of symlinks
1357# (eg FreeBSD returns the mod time of the symlink's containing
1358# directory).
1359if (
1360   am_has_slept=no
1361   for am_try in 1 2; do
1362     echo "timestamp, slept: $am_has_slept" > conftest.file
1363     set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
1364     if test "$[*]" = "X"; then
1365	# -L didn't work.
1366	set X `ls -t "$srcdir/configure" conftest.file`
1367     fi
1368     if test "$[*]" != "X $srcdir/configure conftest.file" \
1369	&& test "$[*]" != "X conftest.file $srcdir/configure"; then
1370
1371	# If neither matched, then we have a broken ls.  This can happen
1372	# if, for instance, CONFIG_SHELL is bash and it inherits a
1373	# broken ls alias from the environment.  This has actually
1374	# happened.  Such a system could not be considered "sane".
1375	AC_MSG_ERROR([ls -t appears to fail.  Make sure there is not a broken
1376  alias in your environment])
1377     fi
1378     if test "$[2]" = conftest.file || test $am_try -eq 2; then
1379       break
1380     fi
1381     # Just in case.
1382     sleep 1
1383     am_has_slept=yes
1384   done
1385   test "$[2]" = conftest.file
1386   )
1387then
1388   # Ok.
1389   :
1390else
1391   AC_MSG_ERROR([newly created file is older than distributed files!
1392Check your system clock])
1393fi
1394AC_MSG_RESULT([yes])
1395# If we didn't sleep, we still need to ensure time stamps of config.status and
1396# generated files are strictly newer.
1397am_sleep_pid=
1398if grep 'slept: no' conftest.file >/dev/null 2>&1; then
1399  ( sleep 1 ) &
1400  am_sleep_pid=$!
1401fi
1402AC_CONFIG_COMMANDS_PRE(
1403  [AC_MSG_CHECKING([that generated files are newer than configure])
1404   if test -n "$am_sleep_pid"; then
1405     # Hide warnings about reused PIDs.
1406     wait $am_sleep_pid 2>/dev/null
1407   fi
1408   AC_MSG_RESULT([done])])
1409rm -f conftest.file
1410])
1411
1412# Copyright (C) 2009-2018 Free Software Foundation, Inc.
1413#
1414# This file is free software; the Free Software Foundation
1415# gives unlimited permission to copy and/or distribute it,
1416# with or without modifications, as long as this notice is preserved.
1417
1418# AM_SILENT_RULES([DEFAULT])
1419# --------------------------
1420# Enable less verbose build rules; with the default set to DEFAULT
1421# ("yes" being less verbose, "no" or empty being verbose).
1422AC_DEFUN([AM_SILENT_RULES],
1423[AC_ARG_ENABLE([silent-rules], [dnl
1424AS_HELP_STRING(
1425  [--enable-silent-rules],
1426  [less verbose build output (undo: "make V=1")])
1427AS_HELP_STRING(
1428  [--disable-silent-rules],
1429  [verbose build output (undo: "make V=0")])dnl
1430])
1431case $enable_silent_rules in @%:@ (((
1432  yes) AM_DEFAULT_VERBOSITY=0;;
1433   no) AM_DEFAULT_VERBOSITY=1;;
1434    *) AM_DEFAULT_VERBOSITY=m4_if([$1], [yes], [0], [1]);;
1435esac
1436dnl
1437dnl A few 'make' implementations (e.g., NonStop OS and NextStep)
1438dnl do not support nested variable expansions.
1439dnl See automake bug#9928 and bug#10237.
1440am_make=${MAKE-make}
1441AC_CACHE_CHECK([whether $am_make supports nested variables],
1442   [am_cv_make_support_nested_variables],
1443   [if AS_ECHO([['TRUE=$(BAR$(V))
1444BAR0=false
1445BAR1=true
1446V=1
1447am__doit:
1448	@$(TRUE)
1449.PHONY: am__doit']]) | $am_make -f - >/dev/null 2>&1; then
1450  am_cv_make_support_nested_variables=yes
1451else
1452  am_cv_make_support_nested_variables=no
1453fi])
1454if test $am_cv_make_support_nested_variables = yes; then
1455  dnl Using '$V' instead of '$(V)' breaks IRIX make.
1456  AM_V='$(V)'
1457  AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
1458else
1459  AM_V=$AM_DEFAULT_VERBOSITY
1460  AM_DEFAULT_V=$AM_DEFAULT_VERBOSITY
1461fi
1462AC_SUBST([AM_V])dnl
1463AM_SUBST_NOTMAKE([AM_V])dnl
1464AC_SUBST([AM_DEFAULT_V])dnl
1465AM_SUBST_NOTMAKE([AM_DEFAULT_V])dnl
1466AC_SUBST([AM_DEFAULT_VERBOSITY])dnl
1467AM_BACKSLASH='\'
1468AC_SUBST([AM_BACKSLASH])dnl
1469_AM_SUBST_NOTMAKE([AM_BACKSLASH])dnl
1470])
1471
1472# Copyright (C) 2001-2018 Free Software Foundation, Inc.
1473#
1474# This file is free software; the Free Software Foundation
1475# gives unlimited permission to copy and/or distribute it,
1476# with or without modifications, as long as this notice is preserved.
1477
1478# AM_PROG_INSTALL_STRIP
1479# ---------------------
1480# One issue with vendor 'install' (even GNU) is that you can't
1481# specify the program used to strip binaries.  This is especially
1482# annoying in cross-compiling environments, where the build's strip
1483# is unlikely to handle the host's binaries.
1484# Fortunately install-sh will honor a STRIPPROG variable, so we
1485# always use install-sh in "make install-strip", and initialize
1486# STRIPPROG with the value of the STRIP variable (set by the user).
1487AC_DEFUN([AM_PROG_INSTALL_STRIP],
1488[AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
1489# Installed binaries are usually stripped using 'strip' when the user
1490# run "make install-strip".  However 'strip' might not be the right
1491# tool to use in cross-compilation environments, therefore Automake
1492# will honor the 'STRIP' environment variable to overrule this program.
1493dnl Don't test for $cross_compiling = yes, because it might be 'maybe'.
1494if test "$cross_compiling" != no; then
1495  AC_CHECK_TOOL([STRIP], [strip], :)
1496fi
1497INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
1498AC_SUBST([INSTALL_STRIP_PROGRAM])])
1499
1500# Copyright (C) 2006-2018 Free Software Foundation, Inc.
1501#
1502# This file is free software; the Free Software Foundation
1503# gives unlimited permission to copy and/or distribute it,
1504# with or without modifications, as long as this notice is preserved.
1505
1506# _AM_SUBST_NOTMAKE(VARIABLE)
1507# ---------------------------
1508# Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in.
1509# This macro is traced by Automake.
1510AC_DEFUN([_AM_SUBST_NOTMAKE])
1511
1512# AM_SUBST_NOTMAKE(VARIABLE)
1513# --------------------------
1514# Public sister of _AM_SUBST_NOTMAKE.
1515AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
1516
1517# Check how to create a tarball.                            -*- Autoconf -*-
1518
1519# Copyright (C) 2004-2018 Free Software Foundation, Inc.
1520#
1521# This file is free software; the Free Software Foundation
1522# gives unlimited permission to copy and/or distribute it,
1523# with or without modifications, as long as this notice is preserved.
1524
1525# _AM_PROG_TAR(FORMAT)
1526# --------------------
1527# Check how to create a tarball in format FORMAT.
1528# FORMAT should be one of 'v7', 'ustar', or 'pax'.
1529#
1530# Substitute a variable $(am__tar) that is a command
1531# writing to stdout a FORMAT-tarball containing the directory
1532# $tardir.
1533#     tardir=directory && $(am__tar) > result.tar
1534#
1535# Substitute a variable $(am__untar) that extract such
1536# a tarball read from stdin.
1537#     $(am__untar) < result.tar
1538#
1539AC_DEFUN([_AM_PROG_TAR],
1540[# Always define AMTAR for backward compatibility.  Yes, it's still used
1541# in the wild :-(  We should find a proper way to deprecate it ...
1542AC_SUBST([AMTAR], ['$${TAR-tar}'])
1543
1544# We'll loop over all known methods to create a tar archive until one works.
1545_am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
1546
1547m4_if([$1], [v7],
1548  [am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'],
1549
1550  [m4_case([$1],
1551    [ustar],
1552     [# The POSIX 1988 'ustar' format is defined with fixed-size fields.
1553      # There is notably a 21 bits limit for the UID and the GID.  In fact,
1554      # the 'pax' utility can hang on bigger UID/GID (see automake bug#8343
1555      # and bug#13588).
1556      am_max_uid=2097151 # 2^21 - 1
1557      am_max_gid=$am_max_uid
1558      # The $UID and $GID variables are not portable, so we need to resort
1559      # to the POSIX-mandated id(1) utility.  Errors in the 'id' calls
1560      # below are definitely unexpected, so allow the users to see them
1561      # (that is, avoid stderr redirection).
1562      am_uid=`id -u || echo unknown`
1563      am_gid=`id -g || echo unknown`
1564      AC_MSG_CHECKING([whether UID '$am_uid' is supported by ustar format])
1565      if test $am_uid -le $am_max_uid; then
1566         AC_MSG_RESULT([yes])
1567      else
1568         AC_MSG_RESULT([no])
1569         _am_tools=none
1570      fi
1571      AC_MSG_CHECKING([whether GID '$am_gid' is supported by ustar format])
1572      if test $am_gid -le $am_max_gid; then
1573         AC_MSG_RESULT([yes])
1574      else
1575        AC_MSG_RESULT([no])
1576        _am_tools=none
1577      fi],
1578
1579  [pax],
1580    [],
1581
1582  [m4_fatal([Unknown tar format])])
1583
1584  AC_MSG_CHECKING([how to create a $1 tar archive])
1585
1586  # Go ahead even if we have the value already cached.  We do so because we
1587  # need to set the values for the 'am__tar' and 'am__untar' variables.
1588  _am_tools=${am_cv_prog_tar_$1-$_am_tools}
1589
1590  for _am_tool in $_am_tools; do
1591    case $_am_tool in
1592    gnutar)
1593      for _am_tar in tar gnutar gtar; do
1594        AM_RUN_LOG([$_am_tar --version]) && break
1595      done
1596      am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"'
1597      am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"'
1598      am__untar="$_am_tar -xf -"
1599      ;;
1600    plaintar)
1601      # Must skip GNU tar: if it does not support --format= it doesn't create
1602      # ustar tarball either.
1603      (tar --version) >/dev/null 2>&1 && continue
1604      am__tar='tar chf - "$$tardir"'
1605      am__tar_='tar chf - "$tardir"'
1606      am__untar='tar xf -'
1607      ;;
1608    pax)
1609      am__tar='pax -L -x $1 -w "$$tardir"'
1610      am__tar_='pax -L -x $1 -w "$tardir"'
1611      am__untar='pax -r'
1612      ;;
1613    cpio)
1614      am__tar='find "$$tardir" -print | cpio -o -H $1 -L'
1615      am__tar_='find "$tardir" -print | cpio -o -H $1 -L'
1616      am__untar='cpio -i -H $1 -d'
1617      ;;
1618    none)
1619      am__tar=false
1620      am__tar_=false
1621      am__untar=false
1622      ;;
1623    esac
1624
1625    # If the value was cached, stop now.  We just wanted to have am__tar
1626    # and am__untar set.
1627    test -n "${am_cv_prog_tar_$1}" && break
1628
1629    # tar/untar a dummy directory, and stop if the command works.
1630    rm -rf conftest.dir
1631    mkdir conftest.dir
1632    echo GrepMe > conftest.dir/file
1633    AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar])
1634    rm -rf conftest.dir
1635    if test -s conftest.tar; then
1636      AM_RUN_LOG([$am__untar <conftest.tar])
1637      AM_RUN_LOG([cat conftest.dir/file])
1638      grep GrepMe conftest.dir/file >/dev/null 2>&1 && break
1639    fi
1640  done
1641  rm -rf conftest.dir
1642
1643  AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])
1644  AC_MSG_RESULT([$am_cv_prog_tar_$1])])
1645
1646AC_SUBST([am__tar])
1647AC_SUBST([am__untar])
1648]) # _AM_PROG_TAR
1649
1650m4_include([m4/ax_cxx_compile_stdcxx_11.m4])
1651m4_include([m4/boost.m4])
1652m4_include([m4/libtool.m4])
1653m4_include([m4/ltoptions.m4])
1654m4_include([m4/ltsugar.m4])
1655m4_include([m4/ltversion.m4])
1656m4_include([m4/lt~obsolete.m4])
1657