1# generated automatically by aclocal 1.15 -*- Autoconf -*-
2
3# Copyright (C) 1996-2014 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)
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])
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) 2002-2014 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='1.15'
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], [1.15], [],
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([1.15])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# Copyright (C) 2011-2014 Free Software Foundation, Inc.
336#
337# This file is free software; the Free Software Foundation
338# gives unlimited permission to copy and/or distribute it,
339# with or without modifications, as long as this notice is preserved.
340
341# AM_PROG_AR([ACT-IF-FAIL])
342# -------------------------
343# Try to determine the archiver interface, and trigger the ar-lib wrapper
344# if it is needed.  If the detection of archiver interface fails, run
345# ACT-IF-FAIL (default is to abort configure with a proper error message).
346AC_DEFUN([AM_PROG_AR],
347[AC_BEFORE([$0], [LT_INIT])dnl
348AC_BEFORE([$0], [AC_PROG_LIBTOOL])dnl
349AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
350AC_REQUIRE_AUX_FILE([ar-lib])dnl
351AC_CHECK_TOOLS([AR], [ar lib "link -lib"], [false])
352: ${AR=ar}
353
354AC_CACHE_CHECK([the archiver ($AR) interface], [am_cv_ar_interface],
355  [AC_LANG_PUSH([C])
356   am_cv_ar_interface=ar
357   AC_COMPILE_IFELSE([AC_LANG_SOURCE([[int some_variable = 0;]])],
358     [am_ar_try='$AR cru libconftest.a conftest.$ac_objext >&AS_MESSAGE_LOG_FD'
359      AC_TRY_EVAL([am_ar_try])
360      if test "$ac_status" -eq 0; then
361        am_cv_ar_interface=ar
362      else
363        am_ar_try='$AR -NOLOGO -OUT:conftest.lib conftest.$ac_objext >&AS_MESSAGE_LOG_FD'
364        AC_TRY_EVAL([am_ar_try])
365        if test "$ac_status" -eq 0; then
366          am_cv_ar_interface=lib
367        else
368          am_cv_ar_interface=unknown
369        fi
370      fi
371      rm -f conftest.lib libconftest.a
372     ])
373   AC_LANG_POP([C])])
374
375case $am_cv_ar_interface in
376ar)
377  ;;
378lib)
379  # Microsoft lib, so override with the ar-lib wrapper script.
380  # FIXME: It is wrong to rewrite AR.
381  # But if we don't then we get into trouble of one sort or another.
382  # A longer-term fix would be to have automake use am__AR in this case,
383  # and then we could set am__AR="$am_aux_dir/ar-lib \$(AR)" or something
384  # similar.
385  AR="$am_aux_dir/ar-lib $AR"
386  ;;
387unknown)
388  m4_default([$1],
389             [AC_MSG_ERROR([could not determine $AR interface])])
390  ;;
391esac
392AC_SUBST([AR])dnl
393])
394
395# AM_AUX_DIR_EXPAND                                         -*- Autoconf -*-
396
397# Copyright (C) 2001-2014 Free Software Foundation, Inc.
398#
399# This file is free software; the Free Software Foundation
400# gives unlimited permission to copy and/or distribute it,
401# with or without modifications, as long as this notice is preserved.
402
403# For projects using AC_CONFIG_AUX_DIR([foo]), Autoconf sets
404# $ac_aux_dir to '$srcdir/foo'.  In other projects, it is set to
405# '$srcdir', '$srcdir/..', or '$srcdir/../..'.
406#
407# Of course, Automake must honor this variable whenever it calls a
408# tool from the auxiliary directory.  The problem is that $srcdir (and
409# therefore $ac_aux_dir as well) can be either absolute or relative,
410# depending on how configure is run.  This is pretty annoying, since
411# it makes $ac_aux_dir quite unusable in subdirectories: in the top
412# source directory, any form will work fine, but in subdirectories a
413# relative path needs to be adjusted first.
414#
415# $ac_aux_dir/missing
416#    fails when called from a subdirectory if $ac_aux_dir is relative
417# $top_srcdir/$ac_aux_dir/missing
418#    fails if $ac_aux_dir is absolute,
419#    fails when called from a subdirectory in a VPATH build with
420#          a relative $ac_aux_dir
421#
422# The reason of the latter failure is that $top_srcdir and $ac_aux_dir
423# are both prefixed by $srcdir.  In an in-source build this is usually
424# harmless because $srcdir is '.', but things will broke when you
425# start a VPATH build or use an absolute $srcdir.
426#
427# So we could use something similar to $top_srcdir/$ac_aux_dir/missing,
428# iff we strip the leading $srcdir from $ac_aux_dir.  That would be:
429#   am_aux_dir='\$(top_srcdir)/'`expr "$ac_aux_dir" : "$srcdir//*\(.*\)"`
430# and then we would define $MISSING as
431#   MISSING="\${SHELL} $am_aux_dir/missing"
432# This will work as long as MISSING is not called from configure, because
433# unfortunately $(top_srcdir) has no meaning in configure.
434# However there are other variables, like CC, which are often used in
435# configure, and could therefore not use this "fixed" $ac_aux_dir.
436#
437# Another solution, used here, is to always expand $ac_aux_dir to an
438# absolute PATH.  The drawback is that using absolute paths prevent a
439# configured tree to be moved without reconfiguration.
440
441AC_DEFUN([AM_AUX_DIR_EXPAND],
442[AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT])dnl
443# Expand $ac_aux_dir to an absolute path.
444am_aux_dir=`cd "$ac_aux_dir" && pwd`
445])
446
447# AM_CONDITIONAL                                            -*- Autoconf -*-
448
449# Copyright (C) 1997-2014 Free Software Foundation, Inc.
450#
451# This file is free software; the Free Software Foundation
452# gives unlimited permission to copy and/or distribute it,
453# with or without modifications, as long as this notice is preserved.
454
455# AM_CONDITIONAL(NAME, SHELL-CONDITION)
456# -------------------------------------
457# Define a conditional.
458AC_DEFUN([AM_CONDITIONAL],
459[AC_PREREQ([2.52])dnl
460 m4_if([$1], [TRUE],  [AC_FATAL([$0: invalid condition: $1])],
461       [$1], [FALSE], [AC_FATAL([$0: invalid condition: $1])])dnl
462AC_SUBST([$1_TRUE])dnl
463AC_SUBST([$1_FALSE])dnl
464_AM_SUBST_NOTMAKE([$1_TRUE])dnl
465_AM_SUBST_NOTMAKE([$1_FALSE])dnl
466m4_define([_AM_COND_VALUE_$1], [$2])dnl
467if $2; then
468  $1_TRUE=
469  $1_FALSE='#'
470else
471  $1_TRUE='#'
472  $1_FALSE=
473fi
474AC_CONFIG_COMMANDS_PRE(
475[if test -z "${$1_TRUE}" && test -z "${$1_FALSE}"; then
476  AC_MSG_ERROR([[conditional "$1" was never defined.
477Usually this means the macro was only invoked conditionally.]])
478fi])])
479
480# Copyright (C) 1999-2014 Free Software Foundation, Inc.
481#
482# This file is free software; the Free Software Foundation
483# gives unlimited permission to copy and/or distribute it,
484# with or without modifications, as long as this notice is preserved.
485
486
487# There are a few dirty hacks below to avoid letting 'AC_PROG_CC' be
488# written in clear, in which case automake, when reading aclocal.m4,
489# will think it sees a *use*, and therefore will trigger all it's
490# C support machinery.  Also note that it means that autoscan, seeing
491# CC etc. in the Makefile, will ask for an AC_PROG_CC use...
492
493
494# _AM_DEPENDENCIES(NAME)
495# ----------------------
496# See how the compiler implements dependency checking.
497# NAME is "CC", "CXX", "OBJC", "OBJCXX", "UPC", or "GJC".
498# We try a few techniques and use that to set a single cache variable.
499#
500# We don't AC_REQUIRE the corresponding AC_PROG_CC since the latter was
501# modified to invoke _AM_DEPENDENCIES(CC); we would have a circular
502# dependency, and given that the user is not expected to run this macro,
503# just rely on AC_PROG_CC.
504AC_DEFUN([_AM_DEPENDENCIES],
505[AC_REQUIRE([AM_SET_DEPDIR])dnl
506AC_REQUIRE([AM_OUTPUT_DEPENDENCY_COMMANDS])dnl
507AC_REQUIRE([AM_MAKE_INCLUDE])dnl
508AC_REQUIRE([AM_DEP_TRACK])dnl
509
510m4_if([$1], [CC],   [depcc="$CC"   am_compiler_list=],
511      [$1], [CXX],  [depcc="$CXX"  am_compiler_list=],
512      [$1], [OBJC], [depcc="$OBJC" am_compiler_list='gcc3 gcc'],
513      [$1], [OBJCXX], [depcc="$OBJCXX" am_compiler_list='gcc3 gcc'],
514      [$1], [UPC],  [depcc="$UPC"  am_compiler_list=],
515      [$1], [GCJ],  [depcc="$GCJ"  am_compiler_list='gcc3 gcc'],
516                    [depcc="$$1"   am_compiler_list=])
517
518AC_CACHE_CHECK([dependency style of $depcc],
519               [am_cv_$1_dependencies_compiler_type],
520[if test -z "$AMDEP_TRUE" && test -f "$am_depcomp"; then
521  # We make a subdir and do the tests there.  Otherwise we can end up
522  # making bogus files that we don't know about and never remove.  For
523  # instance it was reported that on HP-UX the gcc test will end up
524  # making a dummy file named 'D' -- because '-MD' means "put the output
525  # in D".
526  rm -rf conftest.dir
527  mkdir conftest.dir
528  # Copy depcomp to subdir because otherwise we won't find it if we're
529  # using a relative directory.
530  cp "$am_depcomp" conftest.dir
531  cd conftest.dir
532  # We will build objects and dependencies in a subdirectory because
533  # it helps to detect inapplicable dependency modes.  For instance
534  # both Tru64's cc and ICC support -MD to output dependencies as a
535  # side effect of compilation, but ICC will put the dependencies in
536  # the current directory while Tru64 will put them in the object
537  # directory.
538  mkdir sub
539
540  am_cv_$1_dependencies_compiler_type=none
541  if test "$am_compiler_list" = ""; then
542     am_compiler_list=`sed -n ['s/^#*\([a-zA-Z0-9]*\))$/\1/p'] < ./depcomp`
543  fi
544  am__universal=false
545  m4_case([$1], [CC],
546    [case " $depcc " in #(
547     *\ -arch\ *\ -arch\ *) am__universal=true ;;
548     esac],
549    [CXX],
550    [case " $depcc " in #(
551     *\ -arch\ *\ -arch\ *) am__universal=true ;;
552     esac])
553
554  for depmode in $am_compiler_list; do
555    # Setup a source with many dependencies, because some compilers
556    # like to wrap large dependency lists on column 80 (with \), and
557    # we should not choose a depcomp mode which is confused by this.
558    #
559    # We need to recreate these files for each test, as the compiler may
560    # overwrite some of them when testing with obscure command lines.
561    # This happens at least with the AIX C compiler.
562    : > sub/conftest.c
563    for i in 1 2 3 4 5 6; do
564      echo '#include "conftst'$i'.h"' >> sub/conftest.c
565      # Using ": > sub/conftst$i.h" creates only sub/conftst1.h with
566      # Solaris 10 /bin/sh.
567      echo '/* dummy */' > sub/conftst$i.h
568    done
569    echo "${am__include} ${am__quote}sub/conftest.Po${am__quote}" > confmf
570
571    # We check with '-c' and '-o' for the sake of the "dashmstdout"
572    # mode.  It turns out that the SunPro C++ compiler does not properly
573    # handle '-M -o', and we need to detect this.  Also, some Intel
574    # versions had trouble with output in subdirs.
575    am__obj=sub/conftest.${OBJEXT-o}
576    am__minus_obj="-o $am__obj"
577    case $depmode in
578    gcc)
579      # This depmode causes a compiler race in universal mode.
580      test "$am__universal" = false || continue
581      ;;
582    nosideeffect)
583      # After this tag, mechanisms are not by side-effect, so they'll
584      # only be used when explicitly requested.
585      if test "x$enable_dependency_tracking" = xyes; then
586	continue
587      else
588	break
589      fi
590      ;;
591    msvc7 | msvc7msys | msvisualcpp | msvcmsys)
592      # This compiler won't grok '-c -o', but also, the minuso test has
593      # not run yet.  These depmodes are late enough in the game, and
594      # so weak that their functioning should not be impacted.
595      am__obj=conftest.${OBJEXT-o}
596      am__minus_obj=
597      ;;
598    none) break ;;
599    esac
600    if depmode=$depmode \
601       source=sub/conftest.c object=$am__obj \
602       depfile=sub/conftest.Po tmpdepfile=sub/conftest.TPo \
603       $SHELL ./depcomp $depcc -c $am__minus_obj sub/conftest.c \
604         >/dev/null 2>conftest.err &&
605       grep sub/conftst1.h sub/conftest.Po > /dev/null 2>&1 &&
606       grep sub/conftst6.h sub/conftest.Po > /dev/null 2>&1 &&
607       grep $am__obj sub/conftest.Po > /dev/null 2>&1 &&
608       ${MAKE-make} -s -f confmf > /dev/null 2>&1; then
609      # icc doesn't choke on unknown options, it will just issue warnings
610      # or remarks (even with -Werror).  So we grep stderr for any message
611      # that says an option was ignored or not supported.
612      # When given -MP, icc 7.0 and 7.1 complain thusly:
613      #   icc: Command line warning: ignoring option '-M'; no argument required
614      # The diagnosis changed in icc 8.0:
615      #   icc: Command line remark: option '-MP' not supported
616      if (grep 'ignoring option' conftest.err ||
617          grep 'not supported' conftest.err) >/dev/null 2>&1; then :; else
618        am_cv_$1_dependencies_compiler_type=$depmode
619        break
620      fi
621    fi
622  done
623
624  cd ..
625  rm -rf conftest.dir
626else
627  am_cv_$1_dependencies_compiler_type=none
628fi
629])
630AC_SUBST([$1DEPMODE], [depmode=$am_cv_$1_dependencies_compiler_type])
631AM_CONDITIONAL([am__fastdep$1], [
632  test "x$enable_dependency_tracking" != xno \
633  && test "$am_cv_$1_dependencies_compiler_type" = gcc3])
634])
635
636
637# AM_SET_DEPDIR
638# -------------
639# Choose a directory name for dependency files.
640# This macro is AC_REQUIREd in _AM_DEPENDENCIES.
641AC_DEFUN([AM_SET_DEPDIR],
642[AC_REQUIRE([AM_SET_LEADING_DOT])dnl
643AC_SUBST([DEPDIR], ["${am__leading_dot}deps"])dnl
644])
645
646
647# AM_DEP_TRACK
648# ------------
649AC_DEFUN([AM_DEP_TRACK],
650[AC_ARG_ENABLE([dependency-tracking], [dnl
651AS_HELP_STRING(
652  [--enable-dependency-tracking],
653  [do not reject slow dependency extractors])
654AS_HELP_STRING(
655  [--disable-dependency-tracking],
656  [speeds up one-time build])])
657if test "x$enable_dependency_tracking" != xno; then
658  am_depcomp="$ac_aux_dir/depcomp"
659  AMDEPBACKSLASH='\'
660  am__nodep='_no'
661fi
662AM_CONDITIONAL([AMDEP], [test "x$enable_dependency_tracking" != xno])
663AC_SUBST([AMDEPBACKSLASH])dnl
664_AM_SUBST_NOTMAKE([AMDEPBACKSLASH])dnl
665AC_SUBST([am__nodep])dnl
666_AM_SUBST_NOTMAKE([am__nodep])dnl
667])
668
669# Generate code to set up dependency tracking.              -*- Autoconf -*-
670
671# Copyright (C) 1999-2014 Free Software Foundation, Inc.
672#
673# This file is free software; the Free Software Foundation
674# gives unlimited permission to copy and/or distribute it,
675# with or without modifications, as long as this notice is preserved.
676
677
678# _AM_OUTPUT_DEPENDENCY_COMMANDS
679# ------------------------------
680AC_DEFUN([_AM_OUTPUT_DEPENDENCY_COMMANDS],
681[{
682  # Older Autoconf quotes --file arguments for eval, but not when files
683  # are listed without --file.  Let's play safe and only enable the eval
684  # if we detect the quoting.
685  case $CONFIG_FILES in
686  *\'*) eval set x "$CONFIG_FILES" ;;
687  *)   set x $CONFIG_FILES ;;
688  esac
689  shift
690  for mf
691  do
692    # Strip MF so we end up with the name of the file.
693    mf=`echo "$mf" | sed -e 's/:.*$//'`
694    # Check whether this is an Automake generated Makefile or not.
695    # We used to match only the files named 'Makefile.in', but
696    # some people rename them; so instead we look at the file content.
697    # Grep'ing the first line is not enough: some people post-process
698    # each Makefile.in and add a new line on top of each file to say so.
699    # Grep'ing the whole file is not good either: AIX grep has a line
700    # limit of 2048, but all sed's we know have understand at least 4000.
701    if sed -n 's,^#.*generated by automake.*,X,p' "$mf" | grep X >/dev/null 2>&1; then
702      dirpart=`AS_DIRNAME("$mf")`
703    else
704      continue
705    fi
706    # Extract the definition of DEPDIR, am__include, and am__quote
707    # from the Makefile without running 'make'.
708    DEPDIR=`sed -n 's/^DEPDIR = //p' < "$mf"`
709    test -z "$DEPDIR" && continue
710    am__include=`sed -n 's/^am__include = //p' < "$mf"`
711    test -z "$am__include" && continue
712    am__quote=`sed -n 's/^am__quote = //p' < "$mf"`
713    # Find all dependency output files, they are included files with
714    # $(DEPDIR) in their names.  We invoke sed twice because it is the
715    # simplest approach to changing $(DEPDIR) to its actual value in the
716    # expansion.
717    for file in `sed -n "
718      s/^$am__include $am__quote\(.*(DEPDIR).*\)$am__quote"'$/\1/p' <"$mf" | \
719	 sed -e 's/\$(DEPDIR)/'"$DEPDIR"'/g'`; do
720      # Make sure the directory exists.
721      test -f "$dirpart/$file" && continue
722      fdir=`AS_DIRNAME(["$file"])`
723      AS_MKDIR_P([$dirpart/$fdir])
724      # echo "creating $dirpart/$file"
725      echo '# dummy' > "$dirpart/$file"
726    done
727  done
728}
729])# _AM_OUTPUT_DEPENDENCY_COMMANDS
730
731
732# AM_OUTPUT_DEPENDENCY_COMMANDS
733# -----------------------------
734# This macro should only be invoked once -- use via AC_REQUIRE.
735#
736# This code is only required when automatic dependency tracking
737# is enabled.  FIXME.  This creates each '.P' file that we will
738# need in order to bootstrap the dependency handling code.
739AC_DEFUN([AM_OUTPUT_DEPENDENCY_COMMANDS],
740[AC_CONFIG_COMMANDS([depfiles],
741     [test x"$AMDEP_TRUE" != x"" || _AM_OUTPUT_DEPENDENCY_COMMANDS],
742     [AMDEP_TRUE="$AMDEP_TRUE" ac_aux_dir="$ac_aux_dir"])
743])
744
745# Do all the work for Automake.                             -*- Autoconf -*-
746
747# Copyright (C) 1996-2014 Free Software Foundation, Inc.
748#
749# This file is free software; the Free Software Foundation
750# gives unlimited permission to copy and/or distribute it,
751# with or without modifications, as long as this notice is preserved.
752
753# This macro actually does too much.  Some checks are only needed if
754# your package does certain things.  But this isn't really a big deal.
755
756dnl Redefine AC_PROG_CC to automatically invoke _AM_PROG_CC_C_O.
757m4_define([AC_PROG_CC],
758m4_defn([AC_PROG_CC])
759[_AM_PROG_CC_C_O
760])
761
762# AM_INIT_AUTOMAKE(PACKAGE, VERSION, [NO-DEFINE])
763# AM_INIT_AUTOMAKE([OPTIONS])
764# -----------------------------------------------
765# The call with PACKAGE and VERSION arguments is the old style
766# call (pre autoconf-2.50), which is being phased out.  PACKAGE
767# and VERSION should now be passed to AC_INIT and removed from
768# the call to AM_INIT_AUTOMAKE.
769# We support both call styles for the transition.  After
770# the next Automake release, Autoconf can make the AC_INIT
771# arguments mandatory, and then we can depend on a new Autoconf
772# release and drop the old call support.
773AC_DEFUN([AM_INIT_AUTOMAKE],
774[AC_PREREQ([2.65])dnl
775dnl Autoconf wants to disallow AM_ names.  We explicitly allow
776dnl the ones we care about.
777m4_pattern_allow([^AM_[A-Z]+FLAGS$])dnl
778AC_REQUIRE([AM_SET_CURRENT_AUTOMAKE_VERSION])dnl
779AC_REQUIRE([AC_PROG_INSTALL])dnl
780if test "`cd $srcdir && pwd`" != "`pwd`"; then
781  # Use -I$(srcdir) only when $(srcdir) != ., so that make's output
782  # is not polluted with repeated "-I."
783  AC_SUBST([am__isrc], [' -I$(srcdir)'])_AM_SUBST_NOTMAKE([am__isrc])dnl
784  # test to see if srcdir already configured
785  if test -f $srcdir/config.status; then
786    AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
787  fi
788fi
789
790# test whether we have cygpath
791if test -z "$CYGPATH_W"; then
792  if (cygpath --version) >/dev/null 2>/dev/null; then
793    CYGPATH_W='cygpath -w'
794  else
795    CYGPATH_W=echo
796  fi
797fi
798AC_SUBST([CYGPATH_W])
799
800# Define the identity of the package.
801dnl Distinguish between old-style and new-style calls.
802m4_ifval([$2],
803[AC_DIAGNOSE([obsolete],
804             [$0: two- and three-arguments forms are deprecated.])
805m4_ifval([$3], [_AM_SET_OPTION([no-define])])dnl
806 AC_SUBST([PACKAGE], [$1])dnl
807 AC_SUBST([VERSION], [$2])],
808[_AM_SET_OPTIONS([$1])dnl
809dnl Diagnose old-style AC_INIT with new-style AM_AUTOMAKE_INIT.
810m4_if(
811  m4_ifdef([AC_PACKAGE_NAME], [ok]):m4_ifdef([AC_PACKAGE_VERSION], [ok]),
812  [ok:ok],,
813  [m4_fatal([AC_INIT should be called with package and version arguments])])dnl
814 AC_SUBST([PACKAGE], ['AC_PACKAGE_TARNAME'])dnl
815 AC_SUBST([VERSION], ['AC_PACKAGE_VERSION'])])dnl
816
817_AM_IF_OPTION([no-define],,
818[AC_DEFINE_UNQUOTED([PACKAGE], ["$PACKAGE"], [Name of package])
819 AC_DEFINE_UNQUOTED([VERSION], ["$VERSION"], [Version number of package])])dnl
820
821# Some tools Automake needs.
822AC_REQUIRE([AM_SANITY_CHECK])dnl
823AC_REQUIRE([AC_ARG_PROGRAM])dnl
824AM_MISSING_PROG([ACLOCAL], [aclocal-${am__api_version}])
825AM_MISSING_PROG([AUTOCONF], [autoconf])
826AM_MISSING_PROG([AUTOMAKE], [automake-${am__api_version}])
827AM_MISSING_PROG([AUTOHEADER], [autoheader])
828AM_MISSING_PROG([MAKEINFO], [makeinfo])
829AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
830AC_REQUIRE([AM_PROG_INSTALL_STRIP])dnl
831AC_REQUIRE([AC_PROG_MKDIR_P])dnl
832# For better backward compatibility.  To be removed once Automake 1.9.x
833# dies out for good.  For more background, see:
834# <http://lists.gnu.org/archive/html/automake/2012-07/msg00001.html>
835# <http://lists.gnu.org/archive/html/automake/2012-07/msg00014.html>
836AC_SUBST([mkdir_p], ['$(MKDIR_P)'])
837# We need awk for the "check" target (and possibly the TAP driver).  The
838# system "awk" is bad on some platforms.
839AC_REQUIRE([AC_PROG_AWK])dnl
840AC_REQUIRE([AC_PROG_MAKE_SET])dnl
841AC_REQUIRE([AM_SET_LEADING_DOT])dnl
842_AM_IF_OPTION([tar-ustar], [_AM_PROG_TAR([ustar])],
843	      [_AM_IF_OPTION([tar-pax], [_AM_PROG_TAR([pax])],
844			     [_AM_PROG_TAR([v7])])])
845_AM_IF_OPTION([no-dependencies],,
846[AC_PROVIDE_IFELSE([AC_PROG_CC],
847		  [_AM_DEPENDENCIES([CC])],
848		  [m4_define([AC_PROG_CC],
849			     m4_defn([AC_PROG_CC])[_AM_DEPENDENCIES([CC])])])dnl
850AC_PROVIDE_IFELSE([AC_PROG_CXX],
851		  [_AM_DEPENDENCIES([CXX])],
852		  [m4_define([AC_PROG_CXX],
853			     m4_defn([AC_PROG_CXX])[_AM_DEPENDENCIES([CXX])])])dnl
854AC_PROVIDE_IFELSE([AC_PROG_OBJC],
855		  [_AM_DEPENDENCIES([OBJC])],
856		  [m4_define([AC_PROG_OBJC],
857			     m4_defn([AC_PROG_OBJC])[_AM_DEPENDENCIES([OBJC])])])dnl
858AC_PROVIDE_IFELSE([AC_PROG_OBJCXX],
859		  [_AM_DEPENDENCIES([OBJCXX])],
860		  [m4_define([AC_PROG_OBJCXX],
861			     m4_defn([AC_PROG_OBJCXX])[_AM_DEPENDENCIES([OBJCXX])])])dnl
862])
863AC_REQUIRE([AM_SILENT_RULES])dnl
864dnl The testsuite driver may need to know about EXEEXT, so add the
865dnl 'am__EXEEXT' conditional if _AM_COMPILER_EXEEXT was seen.  This
866dnl macro is hooked onto _AC_COMPILER_EXEEXT early, see below.
867AC_CONFIG_COMMANDS_PRE(dnl
868[m4_provide_if([_AM_COMPILER_EXEEXT],
869  [AM_CONDITIONAL([am__EXEEXT], [test -n "$EXEEXT"])])])dnl
870
871# POSIX will say in a future version that running "rm -f" with no argument
872# is OK; and we want to be able to make that assumption in our Makefile
873# recipes.  So use an aggressive probe to check that the usage we want is
874# actually supported "in the wild" to an acceptable degree.
875# See automake bug#10828.
876# To make any issue more visible, cause the running configure to be aborted
877# by default if the 'rm' program in use doesn't match our expectations; the
878# user can still override this though.
879if rm -f && rm -fr && rm -rf; then : OK; else
880  cat >&2 <<'END'
881Oops!
882
883Your 'rm' program seems unable to run without file operands specified
884on the command line, even when the '-f' option is present.  This is contrary
885to the behaviour of most rm programs out there, and not conforming with
886the upcoming POSIX standard: <http://austingroupbugs.net/view.php?id=542>
887
888Please tell bug-automake@gnu.org about your system, including the value
889of your $PATH and any error possibly output before this message.  This
890can help us improve future automake versions.
891
892END
893  if test x"$ACCEPT_INFERIOR_RM_PROGRAM" = x"yes"; then
894    echo 'Configuration will proceed anyway, since you have set the' >&2
895    echo 'ACCEPT_INFERIOR_RM_PROGRAM variable to "yes"' >&2
896    echo >&2
897  else
898    cat >&2 <<'END'
899Aborting the configuration process, to ensure you take notice of the issue.
900
901You can download and install GNU coreutils to get an 'rm' implementation
902that behaves properly: <http://www.gnu.org/software/coreutils/>.
903
904If you want to complete the configuration process using your problematic
905'rm' anyway, export the environment variable ACCEPT_INFERIOR_RM_PROGRAM
906to "yes", and re-run configure.
907
908END
909    AC_MSG_ERROR([Your 'rm' program is bad, sorry.])
910  fi
911fi
912dnl The trailing newline in this macro's definition is deliberate, for
913dnl backward compatibility and to allow trailing 'dnl'-style comments
914dnl after the AM_INIT_AUTOMAKE invocation. See automake bug#16841.
915])
916
917dnl Hook into '_AC_COMPILER_EXEEXT' early to learn its expansion.  Do not
918dnl add the conditional right here, as _AC_COMPILER_EXEEXT may be further
919dnl mangled by Autoconf and run in a shell conditional statement.
920m4_define([_AC_COMPILER_EXEEXT],
921m4_defn([_AC_COMPILER_EXEEXT])[m4_provide([_AM_COMPILER_EXEEXT])])
922
923# When config.status generates a header, we must update the stamp-h file.
924# This file resides in the same directory as the config header
925# that is generated.  The stamp files are numbered to have different names.
926
927# Autoconf calls _AC_AM_CONFIG_HEADER_HOOK (when defined) in the
928# loop where config.status creates the headers, so we can generate
929# our stamp files there.
930AC_DEFUN([_AC_AM_CONFIG_HEADER_HOOK],
931[# Compute $1's index in $config_headers.
932_am_arg=$1
933_am_stamp_count=1
934for _am_header in $config_headers :; do
935  case $_am_header in
936    $_am_arg | $_am_arg:* )
937      break ;;
938    * )
939      _am_stamp_count=`expr $_am_stamp_count + 1` ;;
940  esac
941done
942echo "timestamp for $_am_arg" >`AS_DIRNAME(["$_am_arg"])`/stamp-h[]$_am_stamp_count])
943
944# Copyright (C) 2001-2014 Free Software Foundation, Inc.
945#
946# This file is free software; the Free Software Foundation
947# gives unlimited permission to copy and/or distribute it,
948# with or without modifications, as long as this notice is preserved.
949
950# AM_PROG_INSTALL_SH
951# ------------------
952# Define $install_sh.
953AC_DEFUN([AM_PROG_INSTALL_SH],
954[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
955if test x"${install_sh+set}" != xset; then
956  case $am_aux_dir in
957  *\ * | *\	*)
958    install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
959  *)
960    install_sh="\${SHELL} $am_aux_dir/install-sh"
961  esac
962fi
963AC_SUBST([install_sh])])
964
965# Copyright (C) 2003-2014 Free Software Foundation, Inc.
966#
967# This file is free software; the Free Software Foundation
968# gives unlimited permission to copy and/or distribute it,
969# with or without modifications, as long as this notice is preserved.
970
971# Check whether the underlying file-system supports filenames
972# with a leading dot.  For instance MS-DOS doesn't.
973AC_DEFUN([AM_SET_LEADING_DOT],
974[rm -rf .tst 2>/dev/null
975mkdir .tst 2>/dev/null
976if test -d .tst; then
977  am__leading_dot=.
978else
979  am__leading_dot=_
980fi
981rmdir .tst 2>/dev/null
982AC_SUBST([am__leading_dot])])
983
984# Check to see how 'make' treats includes.	            -*- Autoconf -*-
985
986# Copyright (C) 2001-2014 Free Software Foundation, Inc.
987#
988# This file is free software; the Free Software Foundation
989# gives unlimited permission to copy and/or distribute it,
990# with or without modifications, as long as this notice is preserved.
991
992# AM_MAKE_INCLUDE()
993# -----------------
994# Check to see how make treats includes.
995AC_DEFUN([AM_MAKE_INCLUDE],
996[am_make=${MAKE-make}
997cat > confinc << 'END'
998am__doit:
999	@echo this is the am__doit target
1000.PHONY: am__doit
1001END
1002# If we don't find an include directive, just comment out the code.
1003AC_MSG_CHECKING([for style of include used by $am_make])
1004am__include="#"
1005am__quote=
1006_am_result=none
1007# First try GNU make style include.
1008echo "include confinc" > confmf
1009# Ignore all kinds of additional output from 'make'.
1010case `$am_make -s -f confmf 2> /dev/null` in #(
1011*the\ am__doit\ target*)
1012  am__include=include
1013  am__quote=
1014  _am_result=GNU
1015  ;;
1016esac
1017# Now try BSD make style include.
1018if test "$am__include" = "#"; then
1019   echo '.include "confinc"' > confmf
1020   case `$am_make -s -f confmf 2> /dev/null` in #(
1021   *the\ am__doit\ target*)
1022     am__include=.include
1023     am__quote="\""
1024     _am_result=BSD
1025     ;;
1026   esac
1027fi
1028AC_SUBST([am__include])
1029AC_SUBST([am__quote])
1030AC_MSG_RESULT([$_am_result])
1031rm -f confinc confmf
1032])
1033
1034# Fake the existence of programs that GNU maintainers use.  -*- Autoconf -*-
1035
1036# Copyright (C) 1997-2014 Free Software Foundation, Inc.
1037#
1038# This file is free software; the Free Software Foundation
1039# gives unlimited permission to copy and/or distribute it,
1040# with or without modifications, as long as this notice is preserved.
1041
1042# AM_MISSING_PROG(NAME, PROGRAM)
1043# ------------------------------
1044AC_DEFUN([AM_MISSING_PROG],
1045[AC_REQUIRE([AM_MISSING_HAS_RUN])
1046$1=${$1-"${am_missing_run}$2"}
1047AC_SUBST($1)])
1048
1049# AM_MISSING_HAS_RUN
1050# ------------------
1051# Define MISSING if not defined so far and test if it is modern enough.
1052# If it is, set am_missing_run to use it, otherwise, to nothing.
1053AC_DEFUN([AM_MISSING_HAS_RUN],
1054[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
1055AC_REQUIRE_AUX_FILE([missing])dnl
1056if test x"${MISSING+set}" != xset; then
1057  case $am_aux_dir in
1058  *\ * | *\	*)
1059    MISSING="\${SHELL} \"$am_aux_dir/missing\"" ;;
1060  *)
1061    MISSING="\${SHELL} $am_aux_dir/missing" ;;
1062  esac
1063fi
1064# Use eval to expand $SHELL
1065if eval "$MISSING --is-lightweight"; then
1066  am_missing_run="$MISSING "
1067else
1068  am_missing_run=
1069  AC_MSG_WARN(['missing' script is too old or missing])
1070fi
1071])
1072
1073# Helper functions for option handling.                     -*- Autoconf -*-
1074
1075# Copyright (C) 2001-2014 Free Software Foundation, Inc.
1076#
1077# This file is free software; the Free Software Foundation
1078# gives unlimited permission to copy and/or distribute it,
1079# with or without modifications, as long as this notice is preserved.
1080
1081# _AM_MANGLE_OPTION(NAME)
1082# -----------------------
1083AC_DEFUN([_AM_MANGLE_OPTION],
1084[[_AM_OPTION_]m4_bpatsubst($1, [[^a-zA-Z0-9_]], [_])])
1085
1086# _AM_SET_OPTION(NAME)
1087# --------------------
1088# Set option NAME.  Presently that only means defining a flag for this option.
1089AC_DEFUN([_AM_SET_OPTION],
1090[m4_define(_AM_MANGLE_OPTION([$1]), [1])])
1091
1092# _AM_SET_OPTIONS(OPTIONS)
1093# ------------------------
1094# OPTIONS is a space-separated list of Automake options.
1095AC_DEFUN([_AM_SET_OPTIONS],
1096[m4_foreach_w([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])])
1097
1098# _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET])
1099# -------------------------------------------
1100# Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
1101AC_DEFUN([_AM_IF_OPTION],
1102[m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])
1103
1104# Copyright (C) 1999-2014 Free Software Foundation, Inc.
1105#
1106# This file is free software; the Free Software Foundation
1107# gives unlimited permission to copy and/or distribute it,
1108# with or without modifications, as long as this notice is preserved.
1109
1110# _AM_PROG_CC_C_O
1111# ---------------
1112# Like AC_PROG_CC_C_O, but changed for automake.  We rewrite AC_PROG_CC
1113# to automatically call this.
1114AC_DEFUN([_AM_PROG_CC_C_O],
1115[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
1116AC_REQUIRE_AUX_FILE([compile])dnl
1117AC_LANG_PUSH([C])dnl
1118AC_CACHE_CHECK(
1119  [whether $CC understands -c and -o together],
1120  [am_cv_prog_cc_c_o],
1121  [AC_LANG_CONFTEST([AC_LANG_PROGRAM([])])
1122  # Make sure it works both with $CC and with simple cc.
1123  # Following AC_PROG_CC_C_O, we do the test twice because some
1124  # compilers refuse to overwrite an existing .o file with -o,
1125  # though they will create one.
1126  am_cv_prog_cc_c_o=yes
1127  for am_i in 1 2; do
1128    if AM_RUN_LOG([$CC -c conftest.$ac_ext -o conftest2.$ac_objext]) \
1129         && test -f conftest2.$ac_objext; then
1130      : OK
1131    else
1132      am_cv_prog_cc_c_o=no
1133      break
1134    fi
1135  done
1136  rm -f core conftest*
1137  unset am_i])
1138if test "$am_cv_prog_cc_c_o" != yes; then
1139   # Losing compiler, so override with the script.
1140   # FIXME: It is wrong to rewrite CC.
1141   # But if we don't then we get into trouble of one sort or another.
1142   # A longer-term fix would be to have automake use am__CC in this case,
1143   # and then we could set am__CC="\$(top_srcdir)/compile \$(CC)"
1144   CC="$am_aux_dir/compile $CC"
1145fi
1146AC_LANG_POP([C])])
1147
1148# For backward compatibility.
1149AC_DEFUN_ONCE([AM_PROG_CC_C_O], [AC_REQUIRE([AC_PROG_CC])])
1150
1151# Copyright (C) 2001-2014 Free Software Foundation, Inc.
1152#
1153# This file is free software; the Free Software Foundation
1154# gives unlimited permission to copy and/or distribute it,
1155# with or without modifications, as long as this notice is preserved.
1156
1157# AM_RUN_LOG(COMMAND)
1158# -------------------
1159# Run COMMAND, save the exit status in ac_status, and log it.
1160# (This has been adapted from Autoconf's _AC_RUN_LOG macro.)
1161AC_DEFUN([AM_RUN_LOG],
1162[{ echo "$as_me:$LINENO: $1" >&AS_MESSAGE_LOG_FD
1163   ($1) >&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD
1164   ac_status=$?
1165   echo "$as_me:$LINENO: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
1166   (exit $ac_status); }])
1167
1168# Check to make sure that the build environment is sane.    -*- Autoconf -*-
1169
1170# Copyright (C) 1996-2014 Free Software Foundation, Inc.
1171#
1172# This file is free software; the Free Software Foundation
1173# gives unlimited permission to copy and/or distribute it,
1174# with or without modifications, as long as this notice is preserved.
1175
1176# AM_SANITY_CHECK
1177# ---------------
1178AC_DEFUN([AM_SANITY_CHECK],
1179[AC_MSG_CHECKING([whether build environment is sane])
1180# Reject unsafe characters in $srcdir or the absolute working directory
1181# name.  Accept space and tab only in the latter.
1182am_lf='
1183'
1184case `pwd` in
1185  *[[\\\"\#\$\&\'\`$am_lf]]*)
1186    AC_MSG_ERROR([unsafe absolute working directory name]);;
1187esac
1188case $srcdir in
1189  *[[\\\"\#\$\&\'\`$am_lf\ \	]]*)
1190    AC_MSG_ERROR([unsafe srcdir value: '$srcdir']);;
1191esac
1192
1193# Do 'set' in a subshell so we don't clobber the current shell's
1194# arguments.  Must try -L first in case configure is actually a
1195# symlink; some systems play weird games with the mod time of symlinks
1196# (eg FreeBSD returns the mod time of the symlink's containing
1197# directory).
1198if (
1199   am_has_slept=no
1200   for am_try in 1 2; do
1201     echo "timestamp, slept: $am_has_slept" > conftest.file
1202     set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
1203     if test "$[*]" = "X"; then
1204	# -L didn't work.
1205	set X `ls -t "$srcdir/configure" conftest.file`
1206     fi
1207     if test "$[*]" != "X $srcdir/configure conftest.file" \
1208	&& test "$[*]" != "X conftest.file $srcdir/configure"; then
1209
1210	# If neither matched, then we have a broken ls.  This can happen
1211	# if, for instance, CONFIG_SHELL is bash and it inherits a
1212	# broken ls alias from the environment.  This has actually
1213	# happened.  Such a system could not be considered "sane".
1214	AC_MSG_ERROR([ls -t appears to fail.  Make sure there is not a broken
1215  alias in your environment])
1216     fi
1217     if test "$[2]" = conftest.file || test $am_try -eq 2; then
1218       break
1219     fi
1220     # Just in case.
1221     sleep 1
1222     am_has_slept=yes
1223   done
1224   test "$[2]" = conftest.file
1225   )
1226then
1227   # Ok.
1228   :
1229else
1230   AC_MSG_ERROR([newly created file is older than distributed files!
1231Check your system clock])
1232fi
1233AC_MSG_RESULT([yes])
1234# If we didn't sleep, we still need to ensure time stamps of config.status and
1235# generated files are strictly newer.
1236am_sleep_pid=
1237if grep 'slept: no' conftest.file >/dev/null 2>&1; then
1238  ( sleep 1 ) &
1239  am_sleep_pid=$!
1240fi
1241AC_CONFIG_COMMANDS_PRE(
1242  [AC_MSG_CHECKING([that generated files are newer than configure])
1243   if test -n "$am_sleep_pid"; then
1244     # Hide warnings about reused PIDs.
1245     wait $am_sleep_pid 2>/dev/null
1246   fi
1247   AC_MSG_RESULT([done])])
1248rm -f conftest.file
1249])
1250
1251# Copyright (C) 2009-2014 Free Software Foundation, Inc.
1252#
1253# This file is free software; the Free Software Foundation
1254# gives unlimited permission to copy and/or distribute it,
1255# with or without modifications, as long as this notice is preserved.
1256
1257# AM_SILENT_RULES([DEFAULT])
1258# --------------------------
1259# Enable less verbose build rules; with the default set to DEFAULT
1260# ("yes" being less verbose, "no" or empty being verbose).
1261AC_DEFUN([AM_SILENT_RULES],
1262[AC_ARG_ENABLE([silent-rules], [dnl
1263AS_HELP_STRING(
1264  [--enable-silent-rules],
1265  [less verbose build output (undo: "make V=1")])
1266AS_HELP_STRING(
1267  [--disable-silent-rules],
1268  [verbose build output (undo: "make V=0")])dnl
1269])
1270case $enable_silent_rules in @%:@ (((
1271  yes) AM_DEFAULT_VERBOSITY=0;;
1272   no) AM_DEFAULT_VERBOSITY=1;;
1273    *) AM_DEFAULT_VERBOSITY=m4_if([$1], [yes], [0], [1]);;
1274esac
1275dnl
1276dnl A few 'make' implementations (e.g., NonStop OS and NextStep)
1277dnl do not support nested variable expansions.
1278dnl See automake bug#9928 and bug#10237.
1279am_make=${MAKE-make}
1280AC_CACHE_CHECK([whether $am_make supports nested variables],
1281   [am_cv_make_support_nested_variables],
1282   [if AS_ECHO([['TRUE=$(BAR$(V))
1283BAR0=false
1284BAR1=true
1285V=1
1286am__doit:
1287	@$(TRUE)
1288.PHONY: am__doit']]) | $am_make -f - >/dev/null 2>&1; then
1289  am_cv_make_support_nested_variables=yes
1290else
1291  am_cv_make_support_nested_variables=no
1292fi])
1293if test $am_cv_make_support_nested_variables = yes; then
1294  dnl Using '$V' instead of '$(V)' breaks IRIX make.
1295  AM_V='$(V)'
1296  AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
1297else
1298  AM_V=$AM_DEFAULT_VERBOSITY
1299  AM_DEFAULT_V=$AM_DEFAULT_VERBOSITY
1300fi
1301AC_SUBST([AM_V])dnl
1302AM_SUBST_NOTMAKE([AM_V])dnl
1303AC_SUBST([AM_DEFAULT_V])dnl
1304AM_SUBST_NOTMAKE([AM_DEFAULT_V])dnl
1305AC_SUBST([AM_DEFAULT_VERBOSITY])dnl
1306AM_BACKSLASH='\'
1307AC_SUBST([AM_BACKSLASH])dnl
1308_AM_SUBST_NOTMAKE([AM_BACKSLASH])dnl
1309])
1310
1311# Copyright (C) 2001-2014 Free Software Foundation, Inc.
1312#
1313# This file is free software; the Free Software Foundation
1314# gives unlimited permission to copy and/or distribute it,
1315# with or without modifications, as long as this notice is preserved.
1316
1317# AM_PROG_INSTALL_STRIP
1318# ---------------------
1319# One issue with vendor 'install' (even GNU) is that you can't
1320# specify the program used to strip binaries.  This is especially
1321# annoying in cross-compiling environments, where the build's strip
1322# is unlikely to handle the host's binaries.
1323# Fortunately install-sh will honor a STRIPPROG variable, so we
1324# always use install-sh in "make install-strip", and initialize
1325# STRIPPROG with the value of the STRIP variable (set by the user).
1326AC_DEFUN([AM_PROG_INSTALL_STRIP],
1327[AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
1328# Installed binaries are usually stripped using 'strip' when the user
1329# run "make install-strip".  However 'strip' might not be the right
1330# tool to use in cross-compilation environments, therefore Automake
1331# will honor the 'STRIP' environment variable to overrule this program.
1332dnl Don't test for $cross_compiling = yes, because it might be 'maybe'.
1333if test "$cross_compiling" != no; then
1334  AC_CHECK_TOOL([STRIP], [strip], :)
1335fi
1336INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
1337AC_SUBST([INSTALL_STRIP_PROGRAM])])
1338
1339# Copyright (C) 2006-2014 Free Software Foundation, Inc.
1340#
1341# This file is free software; the Free Software Foundation
1342# gives unlimited permission to copy and/or distribute it,
1343# with or without modifications, as long as this notice is preserved.
1344
1345# _AM_SUBST_NOTMAKE(VARIABLE)
1346# ---------------------------
1347# Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in.
1348# This macro is traced by Automake.
1349AC_DEFUN([_AM_SUBST_NOTMAKE])
1350
1351# AM_SUBST_NOTMAKE(VARIABLE)
1352# --------------------------
1353# Public sister of _AM_SUBST_NOTMAKE.
1354AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
1355
1356# Check how to create a tarball.                            -*- Autoconf -*-
1357
1358# Copyright (C) 2004-2014 Free Software Foundation, Inc.
1359#
1360# This file is free software; the Free Software Foundation
1361# gives unlimited permission to copy and/or distribute it,
1362# with or without modifications, as long as this notice is preserved.
1363
1364# _AM_PROG_TAR(FORMAT)
1365# --------------------
1366# Check how to create a tarball in format FORMAT.
1367# FORMAT should be one of 'v7', 'ustar', or 'pax'.
1368#
1369# Substitute a variable $(am__tar) that is a command
1370# writing to stdout a FORMAT-tarball containing the directory
1371# $tardir.
1372#     tardir=directory && $(am__tar) > result.tar
1373#
1374# Substitute a variable $(am__untar) that extract such
1375# a tarball read from stdin.
1376#     $(am__untar) < result.tar
1377#
1378AC_DEFUN([_AM_PROG_TAR],
1379[# Always define AMTAR for backward compatibility.  Yes, it's still used
1380# in the wild :-(  We should find a proper way to deprecate it ...
1381AC_SUBST([AMTAR], ['$${TAR-tar}'])
1382
1383# We'll loop over all known methods to create a tar archive until one works.
1384_am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
1385
1386m4_if([$1], [v7],
1387  [am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'],
1388
1389  [m4_case([$1],
1390    [ustar],
1391     [# The POSIX 1988 'ustar' format is defined with fixed-size fields.
1392      # There is notably a 21 bits limit for the UID and the GID.  In fact,
1393      # the 'pax' utility can hang on bigger UID/GID (see automake bug#8343
1394      # and bug#13588).
1395      am_max_uid=2097151 # 2^21 - 1
1396      am_max_gid=$am_max_uid
1397      # The $UID and $GID variables are not portable, so we need to resort
1398      # to the POSIX-mandated id(1) utility.  Errors in the 'id' calls
1399      # below are definitely unexpected, so allow the users to see them
1400      # (that is, avoid stderr redirection).
1401      am_uid=`id -u || echo unknown`
1402      am_gid=`id -g || echo unknown`
1403      AC_MSG_CHECKING([whether UID '$am_uid' is supported by ustar format])
1404      if test $am_uid -le $am_max_uid; then
1405         AC_MSG_RESULT([yes])
1406      else
1407         AC_MSG_RESULT([no])
1408         _am_tools=none
1409      fi
1410      AC_MSG_CHECKING([whether GID '$am_gid' is supported by ustar format])
1411      if test $am_gid -le $am_max_gid; then
1412         AC_MSG_RESULT([yes])
1413      else
1414        AC_MSG_RESULT([no])
1415        _am_tools=none
1416      fi],
1417
1418  [pax],
1419    [],
1420
1421  [m4_fatal([Unknown tar format])])
1422
1423  AC_MSG_CHECKING([how to create a $1 tar archive])
1424
1425  # Go ahead even if we have the value already cached.  We do so because we
1426  # need to set the values for the 'am__tar' and 'am__untar' variables.
1427  _am_tools=${am_cv_prog_tar_$1-$_am_tools}
1428
1429  for _am_tool in $_am_tools; do
1430    case $_am_tool in
1431    gnutar)
1432      for _am_tar in tar gnutar gtar; do
1433        AM_RUN_LOG([$_am_tar --version]) && break
1434      done
1435      am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"'
1436      am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"'
1437      am__untar="$_am_tar -xf -"
1438      ;;
1439    plaintar)
1440      # Must skip GNU tar: if it does not support --format= it doesn't create
1441      # ustar tarball either.
1442      (tar --version) >/dev/null 2>&1 && continue
1443      am__tar='tar chf - "$$tardir"'
1444      am__tar_='tar chf - "$tardir"'
1445      am__untar='tar xf -'
1446      ;;
1447    pax)
1448      am__tar='pax -L -x $1 -w "$$tardir"'
1449      am__tar_='pax -L -x $1 -w "$tardir"'
1450      am__untar='pax -r'
1451      ;;
1452    cpio)
1453      am__tar='find "$$tardir" -print | cpio -o -H $1 -L'
1454      am__tar_='find "$tardir" -print | cpio -o -H $1 -L'
1455      am__untar='cpio -i -H $1 -d'
1456      ;;
1457    none)
1458      am__tar=false
1459      am__tar_=false
1460      am__untar=false
1461      ;;
1462    esac
1463
1464    # If the value was cached, stop now.  We just wanted to have am__tar
1465    # and am__untar set.
1466    test -n "${am_cv_prog_tar_$1}" && break
1467
1468    # tar/untar a dummy directory, and stop if the command works.
1469    rm -rf conftest.dir
1470    mkdir conftest.dir
1471    echo GrepMe > conftest.dir/file
1472    AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar])
1473    rm -rf conftest.dir
1474    if test -s conftest.tar; then
1475      AM_RUN_LOG([$am__untar <conftest.tar])
1476      AM_RUN_LOG([cat conftest.dir/file])
1477      grep GrepMe conftest.dir/file >/dev/null 2>&1 && break
1478    fi
1479  done
1480  rm -rf conftest.dir
1481
1482  AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])
1483  AC_MSG_RESULT([$am_cv_prog_tar_$1])])
1484
1485AC_SUBST([am__tar])
1486AC_SUBST([am__untar])
1487]) # _AM_PROG_TAR
1488
1489m4_include([m4/ax_pthread.m4])
1490m4_include([m4/libtool.m4])
1491m4_include([m4/ltoptions.m4])
1492m4_include([m4/ltsugar.m4])
1493m4_include([m4/ltversion.m4])
1494m4_include([m4/lt~obsolete.m4])
1495m4_include([m4/pcre_visibility.m4])
1496