1# generated automatically by aclocal 1.16.2 -*- Autoconf -*-
2
3# Copyright (C) 1996-2020 Free Software Foundation, Inc.
4
5# This file is free software; the Free Software Foundation
6# gives unlimited permission to copy and/or distribute it,
7# with or without modifications, as long as this notice is preserved.
8
9# This program is distributed in the hope that it will be useful,
10# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
11# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
12# PARTICULAR PURPOSE.
13
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
23# pkg.m4 - Macros to locate and utilise pkg-config.   -*- Autoconf -*-
24# serial 11 (pkg-config-0.29.1)
25
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
299dnl PKG_WITH_MODULES(VARIABLE-PREFIX, MODULES,
300dnl   [ACTION-IF-FOUND],[ACTION-IF-NOT-FOUND],
301dnl   [DESCRIPTION], [DEFAULT])
302dnl ------------------------------------------
303dnl
304dnl Prepare a "--with-" configure option using the lowercase
305dnl [VARIABLE-PREFIX] name, merging the behaviour of AC_ARG_WITH and
306dnl PKG_CHECK_MODULES in a single macro.
307AC_DEFUN([PKG_WITH_MODULES],
308[
309m4_pushdef([with_arg], m4_tolower([$1]))
310
311m4_pushdef([description],
312           [m4_default([$5], [build with ]with_arg[ support])])
313
314m4_pushdef([def_arg], [m4_default([$6], [auto])])
315m4_pushdef([def_action_if_found], [AS_TR_SH([with_]with_arg)=yes])
316m4_pushdef([def_action_if_not_found], [AS_TR_SH([with_]with_arg)=no])
317
318m4_case(def_arg,
319            [yes],[m4_pushdef([with_without], [--without-]with_arg)],
320            [m4_pushdef([with_without],[--with-]with_arg)])
321
322AC_ARG_WITH(with_arg,
323     AS_HELP_STRING(with_without, description[ @<:@default=]def_arg[@:>@]),,
324    [AS_TR_SH([with_]with_arg)=def_arg])
325
326AS_CASE([$AS_TR_SH([with_]with_arg)],
327            [yes],[PKG_CHECK_MODULES([$1],[$2],$3,$4)],
328            [auto],[PKG_CHECK_MODULES([$1],[$2],
329                                        [m4_n([def_action_if_found]) $3],
330                                        [m4_n([def_action_if_not_found]) $4])])
331
332m4_popdef([with_arg])
333m4_popdef([description])
334m4_popdef([def_arg])
335
336])dnl PKG_WITH_MODULES
337
338dnl PKG_HAVE_WITH_MODULES(VARIABLE-PREFIX, MODULES,
339dnl   [DESCRIPTION], [DEFAULT])
340dnl -----------------------------------------------
341dnl
342dnl Convenience macro to trigger AM_CONDITIONAL after PKG_WITH_MODULES
343dnl check._[VARIABLE-PREFIX] is exported as make variable.
344AC_DEFUN([PKG_HAVE_WITH_MODULES],
345[
346PKG_WITH_MODULES([$1],[$2],,,[$3],[$4])
347
348AM_CONDITIONAL([HAVE_][$1],
349               [test "$AS_TR_SH([with_]m4_tolower([$1]))" = "yes"])
350])dnl PKG_HAVE_WITH_MODULES
351
352dnl PKG_HAVE_DEFINE_WITH_MODULES(VARIABLE-PREFIX, MODULES,
353dnl   [DESCRIPTION], [DEFAULT])
354dnl ------------------------------------------------------
355dnl
356dnl Convenience macro to run AM_CONDITIONAL and AC_DEFINE after
357dnl PKG_WITH_MODULES check. HAVE_[VARIABLE-PREFIX] is exported as make
358dnl and preprocessor variable.
359AC_DEFUN([PKG_HAVE_DEFINE_WITH_MODULES],
360[
361PKG_HAVE_WITH_MODULES([$1],[$2],[$3],[$4])
362
363AS_IF([test "$AS_TR_SH([with_]m4_tolower([$1]))" = "yes"],
364        [AC_DEFINE([HAVE_][$1], 1, [Enable ]m4_tolower([$1])[ support])])
365])dnl PKG_HAVE_DEFINE_WITH_MODULES
366
367# Copyright (C) 2002-2020 Free Software Foundation, Inc.
368#
369# This file is free software; the Free Software Foundation
370# gives unlimited permission to copy and/or distribute it,
371# with or without modifications, as long as this notice is preserved.
372
373# AM_AUTOMAKE_VERSION(VERSION)
374# ----------------------------
375# Automake X.Y traces this macro to ensure aclocal.m4 has been
376# generated from the m4 files accompanying Automake X.Y.
377# (This private macro should not be called outside this file.)
378AC_DEFUN([AM_AUTOMAKE_VERSION],
379[am__api_version='1.16'
380dnl Some users find AM_AUTOMAKE_VERSION and mistake it for a way to
381dnl require some minimum version.  Point them to the right macro.
382m4_if([$1], [1.16.2], [],
383      [AC_FATAL([Do not call $0, use AM_INIT_AUTOMAKE([$1]).])])dnl
384])
385
386# _AM_AUTOCONF_VERSION(VERSION)
387# -----------------------------
388# aclocal traces this macro to find the Autoconf version.
389# This is a private macro too.  Using m4_define simplifies
390# the logic in aclocal, which can simply ignore this definition.
391m4_define([_AM_AUTOCONF_VERSION], [])
392
393# AM_SET_CURRENT_AUTOMAKE_VERSION
394# -------------------------------
395# Call AM_AUTOMAKE_VERSION and AM_AUTOMAKE_VERSION so they can be traced.
396# This function is AC_REQUIREd by AM_INIT_AUTOMAKE.
397AC_DEFUN([AM_SET_CURRENT_AUTOMAKE_VERSION],
398[AM_AUTOMAKE_VERSION([1.16.2])dnl
399m4_ifndef([AC_AUTOCONF_VERSION],
400  [m4_copy([m4_PACKAGE_VERSION], [AC_AUTOCONF_VERSION])])dnl
401_AM_AUTOCONF_VERSION(m4_defn([AC_AUTOCONF_VERSION]))])
402
403# AM_AUX_DIR_EXPAND                                         -*- Autoconf -*-
404
405# Copyright (C) 2001-2020 Free Software Foundation, Inc.
406#
407# This file is free software; the Free Software Foundation
408# gives unlimited permission to copy and/or distribute it,
409# with or without modifications, as long as this notice is preserved.
410
411# For projects using AC_CONFIG_AUX_DIR([foo]), Autoconf sets
412# $ac_aux_dir to '$srcdir/foo'.  In other projects, it is set to
413# '$srcdir', '$srcdir/..', or '$srcdir/../..'.
414#
415# Of course, Automake must honor this variable whenever it calls a
416# tool from the auxiliary directory.  The problem is that $srcdir (and
417# therefore $ac_aux_dir as well) can be either absolute or relative,
418# depending on how configure is run.  This is pretty annoying, since
419# it makes $ac_aux_dir quite unusable in subdirectories: in the top
420# source directory, any form will work fine, but in subdirectories a
421# relative path needs to be adjusted first.
422#
423# $ac_aux_dir/missing
424#    fails when called from a subdirectory if $ac_aux_dir is relative
425# $top_srcdir/$ac_aux_dir/missing
426#    fails if $ac_aux_dir is absolute,
427#    fails when called from a subdirectory in a VPATH build with
428#          a relative $ac_aux_dir
429#
430# The reason of the latter failure is that $top_srcdir and $ac_aux_dir
431# are both prefixed by $srcdir.  In an in-source build this is usually
432# harmless because $srcdir is '.', but things will broke when you
433# start a VPATH build or use an absolute $srcdir.
434#
435# So we could use something similar to $top_srcdir/$ac_aux_dir/missing,
436# iff we strip the leading $srcdir from $ac_aux_dir.  That would be:
437#   am_aux_dir='\$(top_srcdir)/'`expr "$ac_aux_dir" : "$srcdir//*\(.*\)"`
438# and then we would define $MISSING as
439#   MISSING="\${SHELL} $am_aux_dir/missing"
440# This will work as long as MISSING is not called from configure, because
441# unfortunately $(top_srcdir) has no meaning in configure.
442# However there are other variables, like CC, which are often used in
443# configure, and could therefore not use this "fixed" $ac_aux_dir.
444#
445# Another solution, used here, is to always expand $ac_aux_dir to an
446# absolute PATH.  The drawback is that using absolute paths prevent a
447# configured tree to be moved without reconfiguration.
448
449AC_DEFUN([AM_AUX_DIR_EXPAND],
450[AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT])dnl
451# Expand $ac_aux_dir to an absolute path.
452am_aux_dir=`cd "$ac_aux_dir" && pwd`
453])
454
455# AM_CONDITIONAL                                            -*- Autoconf -*-
456
457# Copyright (C) 1997-2020 Free Software Foundation, Inc.
458#
459# This file is free software; the Free Software Foundation
460# gives unlimited permission to copy and/or distribute it,
461# with or without modifications, as long as this notice is preserved.
462
463# AM_CONDITIONAL(NAME, SHELL-CONDITION)
464# -------------------------------------
465# Define a conditional.
466AC_DEFUN([AM_CONDITIONAL],
467[AC_PREREQ([2.52])dnl
468 m4_if([$1], [TRUE],  [AC_FATAL([$0: invalid condition: $1])],
469       [$1], [FALSE], [AC_FATAL([$0: invalid condition: $1])])dnl
470AC_SUBST([$1_TRUE])dnl
471AC_SUBST([$1_FALSE])dnl
472_AM_SUBST_NOTMAKE([$1_TRUE])dnl
473_AM_SUBST_NOTMAKE([$1_FALSE])dnl
474m4_define([_AM_COND_VALUE_$1], [$2])dnl
475if $2; then
476  $1_TRUE=
477  $1_FALSE='#'
478else
479  $1_TRUE='#'
480  $1_FALSE=
481fi
482AC_CONFIG_COMMANDS_PRE(
483[if test -z "${$1_TRUE}" && test -z "${$1_FALSE}"; then
484  AC_MSG_ERROR([[conditional "$1" was never defined.
485Usually this means the macro was only invoked conditionally.]])
486fi])])
487
488# Do all the work for Automake.                             -*- Autoconf -*-
489
490# Copyright (C) 1996-2020 Free Software Foundation, Inc.
491#
492# This file is free software; the Free Software Foundation
493# gives unlimited permission to copy and/or distribute it,
494# with or without modifications, as long as this notice is preserved.
495
496# This macro actually does too much.  Some checks are only needed if
497# your package does certain things.  But this isn't really a big deal.
498
499dnl Redefine AC_PROG_CC to automatically invoke _AM_PROG_CC_C_O.
500m4_define([AC_PROG_CC],
501m4_defn([AC_PROG_CC])
502[_AM_PROG_CC_C_O
503])
504
505# AM_INIT_AUTOMAKE(PACKAGE, VERSION, [NO-DEFINE])
506# AM_INIT_AUTOMAKE([OPTIONS])
507# -----------------------------------------------
508# The call with PACKAGE and VERSION arguments is the old style
509# call (pre autoconf-2.50), which is being phased out.  PACKAGE
510# and VERSION should now be passed to AC_INIT and removed from
511# the call to AM_INIT_AUTOMAKE.
512# We support both call styles for the transition.  After
513# the next Automake release, Autoconf can make the AC_INIT
514# arguments mandatory, and then we can depend on a new Autoconf
515# release and drop the old call support.
516AC_DEFUN([AM_INIT_AUTOMAKE],
517[AC_PREREQ([2.65])dnl
518dnl Autoconf wants to disallow AM_ names.  We explicitly allow
519dnl the ones we care about.
520m4_pattern_allow([^AM_[A-Z]+FLAGS$])dnl
521AC_REQUIRE([AM_SET_CURRENT_AUTOMAKE_VERSION])dnl
522AC_REQUIRE([AC_PROG_INSTALL])dnl
523if test "`cd $srcdir && pwd`" != "`pwd`"; then
524  # Use -I$(srcdir) only when $(srcdir) != ., so that make's output
525  # is not polluted with repeated "-I."
526  AC_SUBST([am__isrc], [' -I$(srcdir)'])_AM_SUBST_NOTMAKE([am__isrc])dnl
527  # test to see if srcdir already configured
528  if test -f $srcdir/config.status; then
529    AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
530  fi
531fi
532
533# test whether we have cygpath
534if test -z "$CYGPATH_W"; then
535  if (cygpath --version) >/dev/null 2>/dev/null; then
536    CYGPATH_W='cygpath -w'
537  else
538    CYGPATH_W=echo
539  fi
540fi
541AC_SUBST([CYGPATH_W])
542
543# Define the identity of the package.
544dnl Distinguish between old-style and new-style calls.
545m4_ifval([$2],
546[AC_DIAGNOSE([obsolete],
547             [$0: two- and three-arguments forms are deprecated.])
548m4_ifval([$3], [_AM_SET_OPTION([no-define])])dnl
549 AC_SUBST([PACKAGE], [$1])dnl
550 AC_SUBST([VERSION], [$2])],
551[_AM_SET_OPTIONS([$1])dnl
552dnl Diagnose old-style AC_INIT with new-style AM_AUTOMAKE_INIT.
553m4_if(
554  m4_ifdef([AC_PACKAGE_NAME], [ok]):m4_ifdef([AC_PACKAGE_VERSION], [ok]),
555  [ok:ok],,
556  [m4_fatal([AC_INIT should be called with package and version arguments])])dnl
557 AC_SUBST([PACKAGE], ['AC_PACKAGE_TARNAME'])dnl
558 AC_SUBST([VERSION], ['AC_PACKAGE_VERSION'])])dnl
559
560_AM_IF_OPTION([no-define],,
561[AC_DEFINE_UNQUOTED([PACKAGE], ["$PACKAGE"], [Name of package])
562 AC_DEFINE_UNQUOTED([VERSION], ["$VERSION"], [Version number of package])])dnl
563
564# Some tools Automake needs.
565AC_REQUIRE([AM_SANITY_CHECK])dnl
566AC_REQUIRE([AC_ARG_PROGRAM])dnl
567AM_MISSING_PROG([ACLOCAL], [aclocal-${am__api_version}])
568AM_MISSING_PROG([AUTOCONF], [autoconf])
569AM_MISSING_PROG([AUTOMAKE], [automake-${am__api_version}])
570AM_MISSING_PROG([AUTOHEADER], [autoheader])
571AM_MISSING_PROG([MAKEINFO], [makeinfo])
572AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
573AC_REQUIRE([AM_PROG_INSTALL_STRIP])dnl
574AC_REQUIRE([AC_PROG_MKDIR_P])dnl
575# For better backward compatibility.  To be removed once Automake 1.9.x
576# dies out for good.  For more background, see:
577# <https://lists.gnu.org/archive/html/automake/2012-07/msg00001.html>
578# <https://lists.gnu.org/archive/html/automake/2012-07/msg00014.html>
579AC_SUBST([mkdir_p], ['$(MKDIR_P)'])
580# We need awk for the "check" target (and possibly the TAP driver).  The
581# system "awk" is bad on some platforms.
582AC_REQUIRE([AC_PROG_AWK])dnl
583AC_REQUIRE([AC_PROG_MAKE_SET])dnl
584AC_REQUIRE([AM_SET_LEADING_DOT])dnl
585_AM_IF_OPTION([tar-ustar], [_AM_PROG_TAR([ustar])],
586	      [_AM_IF_OPTION([tar-pax], [_AM_PROG_TAR([pax])],
587			     [_AM_PROG_TAR([v7])])])
588_AM_IF_OPTION([no-dependencies],,
589[AC_PROVIDE_IFELSE([AC_PROG_CC],
590		  [_AM_DEPENDENCIES([CC])],
591		  [m4_define([AC_PROG_CC],
592			     m4_defn([AC_PROG_CC])[_AM_DEPENDENCIES([CC])])])dnl
593AC_PROVIDE_IFELSE([AC_PROG_CXX],
594		  [_AM_DEPENDENCIES([CXX])],
595		  [m4_define([AC_PROG_CXX],
596			     m4_defn([AC_PROG_CXX])[_AM_DEPENDENCIES([CXX])])])dnl
597AC_PROVIDE_IFELSE([AC_PROG_OBJC],
598		  [_AM_DEPENDENCIES([OBJC])],
599		  [m4_define([AC_PROG_OBJC],
600			     m4_defn([AC_PROG_OBJC])[_AM_DEPENDENCIES([OBJC])])])dnl
601AC_PROVIDE_IFELSE([AC_PROG_OBJCXX],
602		  [_AM_DEPENDENCIES([OBJCXX])],
603		  [m4_define([AC_PROG_OBJCXX],
604			     m4_defn([AC_PROG_OBJCXX])[_AM_DEPENDENCIES([OBJCXX])])])dnl
605])
606AC_REQUIRE([AM_SILENT_RULES])dnl
607dnl The testsuite driver may need to know about EXEEXT, so add the
608dnl 'am__EXEEXT' conditional if _AM_COMPILER_EXEEXT was seen.  This
609dnl macro is hooked onto _AC_COMPILER_EXEEXT early, see below.
610AC_CONFIG_COMMANDS_PRE(dnl
611[m4_provide_if([_AM_COMPILER_EXEEXT],
612  [AM_CONDITIONAL([am__EXEEXT], [test -n "$EXEEXT"])])])dnl
613
614# POSIX will say in a future version that running "rm -f" with no argument
615# is OK; and we want to be able to make that assumption in our Makefile
616# recipes.  So use an aggressive probe to check that the usage we want is
617# actually supported "in the wild" to an acceptable degree.
618# See automake bug#10828.
619# To make any issue more visible, cause the running configure to be aborted
620# by default if the 'rm' program in use doesn't match our expectations; the
621# user can still override this though.
622if rm -f && rm -fr && rm -rf; then : OK; else
623  cat >&2 <<'END'
624Oops!
625
626Your 'rm' program seems unable to run without file operands specified
627on the command line, even when the '-f' option is present.  This is contrary
628to the behaviour of most rm programs out there, and not conforming with
629the upcoming POSIX standard: <http://austingroupbugs.net/view.php?id=542>
630
631Please tell bug-automake@gnu.org about your system, including the value
632of your $PATH and any error possibly output before this message.  This
633can help us improve future automake versions.
634
635END
636  if test x"$ACCEPT_INFERIOR_RM_PROGRAM" = x"yes"; then
637    echo 'Configuration will proceed anyway, since you have set the' >&2
638    echo 'ACCEPT_INFERIOR_RM_PROGRAM variable to "yes"' >&2
639    echo >&2
640  else
641    cat >&2 <<'END'
642Aborting the configuration process, to ensure you take notice of the issue.
643
644You can download and install GNU coreutils to get an 'rm' implementation
645that behaves properly: <https://www.gnu.org/software/coreutils/>.
646
647If you want to complete the configuration process using your problematic
648'rm' anyway, export the environment variable ACCEPT_INFERIOR_RM_PROGRAM
649to "yes", and re-run configure.
650
651END
652    AC_MSG_ERROR([Your 'rm' program is bad, sorry.])
653  fi
654fi
655dnl The trailing newline in this macro's definition is deliberate, for
656dnl backward compatibility and to allow trailing 'dnl'-style comments
657dnl after the AM_INIT_AUTOMAKE invocation. See automake bug#16841.
658])
659
660dnl Hook into '_AC_COMPILER_EXEEXT' early to learn its expansion.  Do not
661dnl add the conditional right here, as _AC_COMPILER_EXEEXT may be further
662dnl mangled by Autoconf and run in a shell conditional statement.
663m4_define([_AC_COMPILER_EXEEXT],
664m4_defn([_AC_COMPILER_EXEEXT])[m4_provide([_AM_COMPILER_EXEEXT])])
665
666# When config.status generates a header, we must update the stamp-h file.
667# This file resides in the same directory as the config header
668# that is generated.  The stamp files are numbered to have different names.
669
670# Autoconf calls _AC_AM_CONFIG_HEADER_HOOK (when defined) in the
671# loop where config.status creates the headers, so we can generate
672# our stamp files there.
673AC_DEFUN([_AC_AM_CONFIG_HEADER_HOOK],
674[# Compute $1's index in $config_headers.
675_am_arg=$1
676_am_stamp_count=1
677for _am_header in $config_headers :; do
678  case $_am_header in
679    $_am_arg | $_am_arg:* )
680      break ;;
681    * )
682      _am_stamp_count=`expr $_am_stamp_count + 1` ;;
683  esac
684done
685echo "timestamp for $_am_arg" >`AS_DIRNAME(["$_am_arg"])`/stamp-h[]$_am_stamp_count])
686
687# Copyright (C) 2001-2020 Free Software Foundation, Inc.
688#
689# This file is free software; the Free Software Foundation
690# gives unlimited permission to copy and/or distribute it,
691# with or without modifications, as long as this notice is preserved.
692
693# AM_PROG_INSTALL_SH
694# ------------------
695# Define $install_sh.
696AC_DEFUN([AM_PROG_INSTALL_SH],
697[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
698if test x"${install_sh+set}" != xset; then
699  case $am_aux_dir in
700  *\ * | *\	*)
701    install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
702  *)
703    install_sh="\${SHELL} $am_aux_dir/install-sh"
704  esac
705fi
706AC_SUBST([install_sh])])
707
708# Copyright (C) 2003-2020 Free Software Foundation, Inc.
709#
710# This file is free software; the Free Software Foundation
711# gives unlimited permission to copy and/or distribute it,
712# with or without modifications, as long as this notice is preserved.
713
714# Check whether the underlying file-system supports filenames
715# with a leading dot.  For instance MS-DOS doesn't.
716AC_DEFUN([AM_SET_LEADING_DOT],
717[rm -rf .tst 2>/dev/null
718mkdir .tst 2>/dev/null
719if test -d .tst; then
720  am__leading_dot=.
721else
722  am__leading_dot=_
723fi
724rmdir .tst 2>/dev/null
725AC_SUBST([am__leading_dot])])
726
727# Fake the existence of programs that GNU maintainers use.  -*- Autoconf -*-
728
729# Copyright (C) 1997-2020 Free Software Foundation, Inc.
730#
731# This file is free software; the Free Software Foundation
732# gives unlimited permission to copy and/or distribute it,
733# with or without modifications, as long as this notice is preserved.
734
735# AM_MISSING_PROG(NAME, PROGRAM)
736# ------------------------------
737AC_DEFUN([AM_MISSING_PROG],
738[AC_REQUIRE([AM_MISSING_HAS_RUN])
739$1=${$1-"${am_missing_run}$2"}
740AC_SUBST($1)])
741
742# AM_MISSING_HAS_RUN
743# ------------------
744# Define MISSING if not defined so far and test if it is modern enough.
745# If it is, set am_missing_run to use it, otherwise, to nothing.
746AC_DEFUN([AM_MISSING_HAS_RUN],
747[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
748AC_REQUIRE_AUX_FILE([missing])dnl
749if test x"${MISSING+set}" != xset; then
750  case $am_aux_dir in
751  *\ * | *\	*)
752    MISSING="\${SHELL} \"$am_aux_dir/missing\"" ;;
753  *)
754    MISSING="\${SHELL} $am_aux_dir/missing" ;;
755  esac
756fi
757# Use eval to expand $SHELL
758if eval "$MISSING --is-lightweight"; then
759  am_missing_run="$MISSING "
760else
761  am_missing_run=
762  AC_MSG_WARN(['missing' script is too old or missing])
763fi
764])
765
766# Helper functions for option handling.                     -*- Autoconf -*-
767
768# Copyright (C) 2001-2020 Free Software Foundation, Inc.
769#
770# This file is free software; the Free Software Foundation
771# gives unlimited permission to copy and/or distribute it,
772# with or without modifications, as long as this notice is preserved.
773
774# _AM_MANGLE_OPTION(NAME)
775# -----------------------
776AC_DEFUN([_AM_MANGLE_OPTION],
777[[_AM_OPTION_]m4_bpatsubst($1, [[^a-zA-Z0-9_]], [_])])
778
779# _AM_SET_OPTION(NAME)
780# --------------------
781# Set option NAME.  Presently that only means defining a flag for this option.
782AC_DEFUN([_AM_SET_OPTION],
783[m4_define(_AM_MANGLE_OPTION([$1]), [1])])
784
785# _AM_SET_OPTIONS(OPTIONS)
786# ------------------------
787# OPTIONS is a space-separated list of Automake options.
788AC_DEFUN([_AM_SET_OPTIONS],
789[m4_foreach_w([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])])
790
791# _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET])
792# -------------------------------------------
793# Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
794AC_DEFUN([_AM_IF_OPTION],
795[m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])
796
797# Copyright (C) 2001-2020 Free Software Foundation, Inc.
798#
799# This file is free software; the Free Software Foundation
800# gives unlimited permission to copy and/or distribute it,
801# with or without modifications, as long as this notice is preserved.
802
803# AM_RUN_LOG(COMMAND)
804# -------------------
805# Run COMMAND, save the exit status in ac_status, and log it.
806# (This has been adapted from Autoconf's _AC_RUN_LOG macro.)
807AC_DEFUN([AM_RUN_LOG],
808[{ echo "$as_me:$LINENO: $1" >&AS_MESSAGE_LOG_FD
809   ($1) >&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD
810   ac_status=$?
811   echo "$as_me:$LINENO: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
812   (exit $ac_status); }])
813
814# Check to make sure that the build environment is sane.    -*- Autoconf -*-
815
816# Copyright (C) 1996-2020 Free Software Foundation, Inc.
817#
818# This file is free software; the Free Software Foundation
819# gives unlimited permission to copy and/or distribute it,
820# with or without modifications, as long as this notice is preserved.
821
822# AM_SANITY_CHECK
823# ---------------
824AC_DEFUN([AM_SANITY_CHECK],
825[AC_MSG_CHECKING([whether build environment is sane])
826# Reject unsafe characters in $srcdir or the absolute working directory
827# name.  Accept space and tab only in the latter.
828am_lf='
829'
830case `pwd` in
831  *[[\\\"\#\$\&\'\`$am_lf]]*)
832    AC_MSG_ERROR([unsafe absolute working directory name]);;
833esac
834case $srcdir in
835  *[[\\\"\#\$\&\'\`$am_lf\ \	]]*)
836    AC_MSG_ERROR([unsafe srcdir value: '$srcdir']);;
837esac
838
839# Do 'set' in a subshell so we don't clobber the current shell's
840# arguments.  Must try -L first in case configure is actually a
841# symlink; some systems play weird games with the mod time of symlinks
842# (eg FreeBSD returns the mod time of the symlink's containing
843# directory).
844if (
845   am_has_slept=no
846   for am_try in 1 2; do
847     echo "timestamp, slept: $am_has_slept" > conftest.file
848     set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
849     if test "$[*]" = "X"; then
850	# -L didn't work.
851	set X `ls -t "$srcdir/configure" conftest.file`
852     fi
853     if test "$[*]" != "X $srcdir/configure conftest.file" \
854	&& test "$[*]" != "X conftest.file $srcdir/configure"; then
855
856	# If neither matched, then we have a broken ls.  This can happen
857	# if, for instance, CONFIG_SHELL is bash and it inherits a
858	# broken ls alias from the environment.  This has actually
859	# happened.  Such a system could not be considered "sane".
860	AC_MSG_ERROR([ls -t appears to fail.  Make sure there is not a broken
861  alias in your environment])
862     fi
863     if test "$[2]" = conftest.file || test $am_try -eq 2; then
864       break
865     fi
866     # Just in case.
867     sleep 1
868     am_has_slept=yes
869   done
870   test "$[2]" = conftest.file
871   )
872then
873   # Ok.
874   :
875else
876   AC_MSG_ERROR([newly created file is older than distributed files!
877Check your system clock])
878fi
879AC_MSG_RESULT([yes])
880# If we didn't sleep, we still need to ensure time stamps of config.status and
881# generated files are strictly newer.
882am_sleep_pid=
883if grep 'slept: no' conftest.file >/dev/null 2>&1; then
884  ( sleep 1 ) &
885  am_sleep_pid=$!
886fi
887AC_CONFIG_COMMANDS_PRE(
888  [AC_MSG_CHECKING([that generated files are newer than configure])
889   if test -n "$am_sleep_pid"; then
890     # Hide warnings about reused PIDs.
891     wait $am_sleep_pid 2>/dev/null
892   fi
893   AC_MSG_RESULT([done])])
894rm -f conftest.file
895])
896
897# Copyright (C) 2009-2020 Free Software Foundation, Inc.
898#
899# This file is free software; the Free Software Foundation
900# gives unlimited permission to copy and/or distribute it,
901# with or without modifications, as long as this notice is preserved.
902
903# AM_SILENT_RULES([DEFAULT])
904# --------------------------
905# Enable less verbose build rules; with the default set to DEFAULT
906# ("yes" being less verbose, "no" or empty being verbose).
907AC_DEFUN([AM_SILENT_RULES],
908[AC_ARG_ENABLE([silent-rules], [dnl
909AS_HELP_STRING(
910  [--enable-silent-rules],
911  [less verbose build output (undo: "make V=1")])
912AS_HELP_STRING(
913  [--disable-silent-rules],
914  [verbose build output (undo: "make V=0")])dnl
915])
916case $enable_silent_rules in @%:@ (((
917  yes) AM_DEFAULT_VERBOSITY=0;;
918   no) AM_DEFAULT_VERBOSITY=1;;
919    *) AM_DEFAULT_VERBOSITY=m4_if([$1], [yes], [0], [1]);;
920esac
921dnl
922dnl A few 'make' implementations (e.g., NonStop OS and NextStep)
923dnl do not support nested variable expansions.
924dnl See automake bug#9928 and bug#10237.
925am_make=${MAKE-make}
926AC_CACHE_CHECK([whether $am_make supports nested variables],
927   [am_cv_make_support_nested_variables],
928   [if AS_ECHO([['TRUE=$(BAR$(V))
929BAR0=false
930BAR1=true
931V=1
932am__doit:
933	@$(TRUE)
934.PHONY: am__doit']]) | $am_make -f - >/dev/null 2>&1; then
935  am_cv_make_support_nested_variables=yes
936else
937  am_cv_make_support_nested_variables=no
938fi])
939if test $am_cv_make_support_nested_variables = yes; then
940  dnl Using '$V' instead of '$(V)' breaks IRIX make.
941  AM_V='$(V)'
942  AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
943else
944  AM_V=$AM_DEFAULT_VERBOSITY
945  AM_DEFAULT_V=$AM_DEFAULT_VERBOSITY
946fi
947AC_SUBST([AM_V])dnl
948AM_SUBST_NOTMAKE([AM_V])dnl
949AC_SUBST([AM_DEFAULT_V])dnl
950AM_SUBST_NOTMAKE([AM_DEFAULT_V])dnl
951AC_SUBST([AM_DEFAULT_VERBOSITY])dnl
952AM_BACKSLASH='\'
953AC_SUBST([AM_BACKSLASH])dnl
954_AM_SUBST_NOTMAKE([AM_BACKSLASH])dnl
955])
956
957# Copyright (C) 2001-2020 Free Software Foundation, Inc.
958#
959# This file is free software; the Free Software Foundation
960# gives unlimited permission to copy and/or distribute it,
961# with or without modifications, as long as this notice is preserved.
962
963# AM_PROG_INSTALL_STRIP
964# ---------------------
965# One issue with vendor 'install' (even GNU) is that you can't
966# specify the program used to strip binaries.  This is especially
967# annoying in cross-compiling environments, where the build's strip
968# is unlikely to handle the host's binaries.
969# Fortunately install-sh will honor a STRIPPROG variable, so we
970# always use install-sh in "make install-strip", and initialize
971# STRIPPROG with the value of the STRIP variable (set by the user).
972AC_DEFUN([AM_PROG_INSTALL_STRIP],
973[AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
974# Installed binaries are usually stripped using 'strip' when the user
975# run "make install-strip".  However 'strip' might not be the right
976# tool to use in cross-compilation environments, therefore Automake
977# will honor the 'STRIP' environment variable to overrule this program.
978dnl Don't test for $cross_compiling = yes, because it might be 'maybe'.
979if test "$cross_compiling" != no; then
980  AC_CHECK_TOOL([STRIP], [strip], :)
981fi
982INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
983AC_SUBST([INSTALL_STRIP_PROGRAM])])
984
985# Copyright (C) 2006-2020 Free Software Foundation, Inc.
986#
987# This file is free software; the Free Software Foundation
988# gives unlimited permission to copy and/or distribute it,
989# with or without modifications, as long as this notice is preserved.
990
991# _AM_SUBST_NOTMAKE(VARIABLE)
992# ---------------------------
993# Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in.
994# This macro is traced by Automake.
995AC_DEFUN([_AM_SUBST_NOTMAKE])
996
997# AM_SUBST_NOTMAKE(VARIABLE)
998# --------------------------
999# Public sister of _AM_SUBST_NOTMAKE.
1000AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
1001
1002# Check how to create a tarball.                            -*- Autoconf -*-
1003
1004# Copyright (C) 2004-2020 Free Software Foundation, Inc.
1005#
1006# This file is free software; the Free Software Foundation
1007# gives unlimited permission to copy and/or distribute it,
1008# with or without modifications, as long as this notice is preserved.
1009
1010# _AM_PROG_TAR(FORMAT)
1011# --------------------
1012# Check how to create a tarball in format FORMAT.
1013# FORMAT should be one of 'v7', 'ustar', or 'pax'.
1014#
1015# Substitute a variable $(am__tar) that is a command
1016# writing to stdout a FORMAT-tarball containing the directory
1017# $tardir.
1018#     tardir=directory && $(am__tar) > result.tar
1019#
1020# Substitute a variable $(am__untar) that extract such
1021# a tarball read from stdin.
1022#     $(am__untar) < result.tar
1023#
1024AC_DEFUN([_AM_PROG_TAR],
1025[# Always define AMTAR for backward compatibility.  Yes, it's still used
1026# in the wild :-(  We should find a proper way to deprecate it ...
1027AC_SUBST([AMTAR], ['$${TAR-tar}'])
1028
1029# We'll loop over all known methods to create a tar archive until one works.
1030_am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
1031
1032m4_if([$1], [v7],
1033  [am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'],
1034
1035  [m4_case([$1],
1036    [ustar],
1037     [# The POSIX 1988 'ustar' format is defined with fixed-size fields.
1038      # There is notably a 21 bits limit for the UID and the GID.  In fact,
1039      # the 'pax' utility can hang on bigger UID/GID (see automake bug#8343
1040      # and bug#13588).
1041      am_max_uid=2097151 # 2^21 - 1
1042      am_max_gid=$am_max_uid
1043      # The $UID and $GID variables are not portable, so we need to resort
1044      # to the POSIX-mandated id(1) utility.  Errors in the 'id' calls
1045      # below are definitely unexpected, so allow the users to see them
1046      # (that is, avoid stderr redirection).
1047      am_uid=`id -u || echo unknown`
1048      am_gid=`id -g || echo unknown`
1049      AC_MSG_CHECKING([whether UID '$am_uid' is supported by ustar format])
1050      if test $am_uid -le $am_max_uid; then
1051         AC_MSG_RESULT([yes])
1052      else
1053         AC_MSG_RESULT([no])
1054         _am_tools=none
1055      fi
1056      AC_MSG_CHECKING([whether GID '$am_gid' is supported by ustar format])
1057      if test $am_gid -le $am_max_gid; then
1058         AC_MSG_RESULT([yes])
1059      else
1060        AC_MSG_RESULT([no])
1061        _am_tools=none
1062      fi],
1063
1064  [pax],
1065    [],
1066
1067  [m4_fatal([Unknown tar format])])
1068
1069  AC_MSG_CHECKING([how to create a $1 tar archive])
1070
1071  # Go ahead even if we have the value already cached.  We do so because we
1072  # need to set the values for the 'am__tar' and 'am__untar' variables.
1073  _am_tools=${am_cv_prog_tar_$1-$_am_tools}
1074
1075  for _am_tool in $_am_tools; do
1076    case $_am_tool in
1077    gnutar)
1078      for _am_tar in tar gnutar gtar; do
1079        AM_RUN_LOG([$_am_tar --version]) && break
1080      done
1081      am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"'
1082      am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"'
1083      am__untar="$_am_tar -xf -"
1084      ;;
1085    plaintar)
1086      # Must skip GNU tar: if it does not support --format= it doesn't create
1087      # ustar tarball either.
1088      (tar --version) >/dev/null 2>&1 && continue
1089      am__tar='tar chf - "$$tardir"'
1090      am__tar_='tar chf - "$tardir"'
1091      am__untar='tar xf -'
1092      ;;
1093    pax)
1094      am__tar='pax -L -x $1 -w "$$tardir"'
1095      am__tar_='pax -L -x $1 -w "$tardir"'
1096      am__untar='pax -r'
1097      ;;
1098    cpio)
1099      am__tar='find "$$tardir" -print | cpio -o -H $1 -L'
1100      am__tar_='find "$tardir" -print | cpio -o -H $1 -L'
1101      am__untar='cpio -i -H $1 -d'
1102      ;;
1103    none)
1104      am__tar=false
1105      am__tar_=false
1106      am__untar=false
1107      ;;
1108    esac
1109
1110    # If the value was cached, stop now.  We just wanted to have am__tar
1111    # and am__untar set.
1112    test -n "${am_cv_prog_tar_$1}" && break
1113
1114    # tar/untar a dummy directory, and stop if the command works.
1115    rm -rf conftest.dir
1116    mkdir conftest.dir
1117    echo GrepMe > conftest.dir/file
1118    AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar])
1119    rm -rf conftest.dir
1120    if test -s conftest.tar; then
1121      AM_RUN_LOG([$am__untar <conftest.tar])
1122      AM_RUN_LOG([cat conftest.dir/file])
1123      grep GrepMe conftest.dir/file >/dev/null 2>&1 && break
1124    fi
1125  done
1126  rm -rf conftest.dir
1127
1128  AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])
1129  AC_MSG_RESULT([$am_cv_prog_tar_$1])])
1130
1131AC_SUBST([am__tar])
1132AC_SUBST([am__untar])
1133]) # _AM_PROG_TAR
1134
1135