1# generated automatically by aclocal 1.16.1 -*- Autoconf -*-
2
3# Copyright (C) 1996-2018 Free Software Foundation, Inc.
4
5# This file is free software; the Free Software Foundation
6# gives unlimited permission to copy and/or distribute it,
7# with or without modifications, as long as this notice is preserved.
8
9# This program is distributed in the hope that it will be useful,
10# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
11# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
12# PARTICULAR PURPOSE.
13
14m4_ifndef([AC_CONFIG_MACRO_DIRS], [m4_defun([_AM_CONFIG_MACRO_DIRS], [])m4_defun([AC_CONFIG_MACRO_DIRS], [_AM_CONFIG_MACRO_DIRS($@)])])
15m4_ifndef([AC_AUTOCONF_VERSION],
16  [m4_copy([m4_PACKAGE_VERSION], [AC_AUTOCONF_VERSION])])dnl
17m4_if(m4_defn([AC_AUTOCONF_VERSION]), [2.69],,
18[m4_warning([this file was generated for autoconf 2.69.
19You have another version of autoconf.  It may work, but is not guaranteed to.
20If you have problems, you may need to regenerate the build system entirely.
21To do so, use the procedure documented by the package, typically 'autoreconf'.])])
22
23# lib-ld.m4 serial 6
24dnl Copyright (C) 1996-2003, 2009-2016 Free Software Foundation, Inc.
25dnl This file is free software; the Free Software Foundation
26dnl gives unlimited permission to copy and/or distribute it,
27dnl with or without modifications, as long as this notice is preserved.
28
29dnl Subroutines of libtool.m4,
30dnl with replacements s/_*LT_PATH/AC_LIB_PROG/ and s/lt_/acl_/ to avoid
31dnl collision with libtool.m4.
32
33dnl From libtool-2.4. Sets the variable with_gnu_ld to yes or no.
34AC_DEFUN([AC_LIB_PROG_LD_GNU],
35[AC_CACHE_CHECK([if the linker ($LD) is GNU ld], [acl_cv_prog_gnu_ld],
36[# I'd rather use --version here, but apparently some GNU lds only accept -v.
37case `$LD -v 2>&1 </dev/null` in
38*GNU* | *'with BFD'*)
39  acl_cv_prog_gnu_ld=yes
40  ;;
41*)
42  acl_cv_prog_gnu_ld=no
43  ;;
44esac])
45with_gnu_ld=$acl_cv_prog_gnu_ld
46])
47
48dnl From libtool-2.4. Sets the variable LD.
49AC_DEFUN([AC_LIB_PROG_LD],
50[AC_REQUIRE([AC_PROG_CC])dnl
51AC_REQUIRE([AC_CANONICAL_HOST])dnl
52
53AC_ARG_WITH([gnu-ld],
54    [AS_HELP_STRING([--with-gnu-ld],
55        [assume the C compiler uses GNU ld [default=no]])],
56    [test "$withval" = no || with_gnu_ld=yes],
57    [with_gnu_ld=no])dnl
58
59# Prepare PATH_SEPARATOR.
60# The user is always right.
61if test "${PATH_SEPARATOR+set}" != set; then
62  # Determine PATH_SEPARATOR by trying to find /bin/sh in a PATH which
63  # contains only /bin. Note that ksh looks also at the FPATH variable,
64  # so we have to set that as well for the test.
65  PATH_SEPARATOR=:
66  (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 \
67    && { (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 \
68           || PATH_SEPARATOR=';'
69       }
70fi
71
72ac_prog=ld
73if test "$GCC" = yes; then
74  # Check if gcc -print-prog-name=ld gives a path.
75  AC_MSG_CHECKING([for ld used by $CC])
76  case $host in
77  *-*-mingw*)
78    # gcc leaves a trailing carriage return which upsets mingw
79    ac_prog=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;;
80  *)
81    ac_prog=`($CC -print-prog-name=ld) 2>&5` ;;
82  esac
83  case $ac_prog in
84    # Accept absolute paths.
85    [[\\/]]* | ?:[[\\/]]*)
86      re_direlt='/[[^/]][[^/]]*/\.\./'
87      # Canonicalize the pathname of ld
88      ac_prog=`echo "$ac_prog"| sed 's%\\\\%/%g'`
89      while echo "$ac_prog" | grep "$re_direlt" > /dev/null 2>&1; do
90        ac_prog=`echo $ac_prog| sed "s%$re_direlt%/%"`
91      done
92      test -z "$LD" && LD="$ac_prog"
93      ;;
94  "")
95    # If it fails, then pretend we aren't using GCC.
96    ac_prog=ld
97    ;;
98  *)
99    # If it is relative, then search for the first ld in PATH.
100    with_gnu_ld=unknown
101    ;;
102  esac
103elif test "$with_gnu_ld" = yes; then
104  AC_MSG_CHECKING([for GNU ld])
105else
106  AC_MSG_CHECKING([for non-GNU ld])
107fi
108AC_CACHE_VAL([acl_cv_path_LD],
109[if test -z "$LD"; then
110  acl_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
111  for ac_dir in $PATH; do
112    IFS="$acl_save_ifs"
113    test -z "$ac_dir" && ac_dir=.
114    if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then
115      acl_cv_path_LD="$ac_dir/$ac_prog"
116      # Check to see if the program is GNU ld.  I'd rather use --version,
117      # but apparently some variants of GNU ld only accept -v.
118      # Break only if it was the GNU/non-GNU ld that we prefer.
119      case `"$acl_cv_path_LD" -v 2>&1 </dev/null` in
120      *GNU* | *'with BFD'*)
121        test "$with_gnu_ld" != no && break
122        ;;
123      *)
124        test "$with_gnu_ld" != yes && break
125        ;;
126      esac
127    fi
128  done
129  IFS="$acl_save_ifs"
130else
131  acl_cv_path_LD="$LD" # Let the user override the test with a path.
132fi])
133LD="$acl_cv_path_LD"
134if test -n "$LD"; then
135  AC_MSG_RESULT([$LD])
136else
137  AC_MSG_RESULT([no])
138fi
139test -z "$LD" && AC_MSG_ERROR([no acceptable ld found in \$PATH])
140AC_LIB_PROG_LD_GNU
141])
142
143# lib-link.m4 serial 26 (gettext-0.18.2)
144dnl Copyright (C) 2001-2016 Free Software Foundation, Inc.
145dnl This file is free software; the Free Software Foundation
146dnl gives unlimited permission to copy and/or distribute it,
147dnl with or without modifications, as long as this notice is preserved.
148
149dnl From Bruno Haible.
150
151AC_PREREQ([2.54])
152
153dnl AC_LIB_LINKFLAGS(name [, dependencies]) searches for libname and
154dnl the libraries corresponding to explicit and implicit dependencies.
155dnl Sets and AC_SUBSTs the LIB${NAME} and LTLIB${NAME} variables and
156dnl augments the CPPFLAGS variable.
157dnl Sets and AC_SUBSTs the LIB${NAME}_PREFIX variable to nonempty if libname
158dnl was found in ${LIB${NAME}_PREFIX}/$acl_libdirstem.
159AC_DEFUN([AC_LIB_LINKFLAGS],
160[
161  AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
162  AC_REQUIRE([AC_LIB_RPATH])
163  pushdef([Name],[m4_translit([$1],[./+-], [____])])
164  pushdef([NAME],[m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./+-],
165                                   [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])])
166  AC_CACHE_CHECK([how to link with lib[]$1], [ac_cv_lib[]Name[]_libs], [
167    AC_LIB_LINKFLAGS_BODY([$1], [$2])
168    ac_cv_lib[]Name[]_libs="$LIB[]NAME"
169    ac_cv_lib[]Name[]_ltlibs="$LTLIB[]NAME"
170    ac_cv_lib[]Name[]_cppflags="$INC[]NAME"
171    ac_cv_lib[]Name[]_prefix="$LIB[]NAME[]_PREFIX"
172  ])
173  LIB[]NAME="$ac_cv_lib[]Name[]_libs"
174  LTLIB[]NAME="$ac_cv_lib[]Name[]_ltlibs"
175  INC[]NAME="$ac_cv_lib[]Name[]_cppflags"
176  LIB[]NAME[]_PREFIX="$ac_cv_lib[]Name[]_prefix"
177  AC_LIB_APPENDTOVAR([CPPFLAGS], [$INC]NAME)
178  AC_SUBST([LIB]NAME)
179  AC_SUBST([LTLIB]NAME)
180  AC_SUBST([LIB]NAME[_PREFIX])
181  dnl Also set HAVE_LIB[]NAME so that AC_LIB_HAVE_LINKFLAGS can reuse the
182  dnl results of this search when this library appears as a dependency.
183  HAVE_LIB[]NAME=yes
184  popdef([NAME])
185  popdef([Name])
186])
187
188dnl AC_LIB_HAVE_LINKFLAGS(name, dependencies, includes, testcode, [missing-message])
189dnl searches for libname and the libraries corresponding to explicit and
190dnl implicit dependencies, together with the specified include files and
191dnl the ability to compile and link the specified testcode. The missing-message
192dnl defaults to 'no' and may contain additional hints for the user.
193dnl If found, it sets and AC_SUBSTs HAVE_LIB${NAME}=yes and the LIB${NAME}
194dnl and LTLIB${NAME} variables and augments the CPPFLAGS variable, and
195dnl #defines HAVE_LIB${NAME} to 1. Otherwise, it sets and AC_SUBSTs
196dnl HAVE_LIB${NAME}=no and LIB${NAME} and LTLIB${NAME} to empty.
197dnl Sets and AC_SUBSTs the LIB${NAME}_PREFIX variable to nonempty if libname
198dnl was found in ${LIB${NAME}_PREFIX}/$acl_libdirstem.
199AC_DEFUN([AC_LIB_HAVE_LINKFLAGS],
200[
201  AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
202  AC_REQUIRE([AC_LIB_RPATH])
203  pushdef([Name],[m4_translit([$1],[./+-], [____])])
204  pushdef([NAME],[m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./+-],
205                                   [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])])
206
207  dnl Search for lib[]Name and define LIB[]NAME, LTLIB[]NAME and INC[]NAME
208  dnl accordingly.
209  AC_LIB_LINKFLAGS_BODY([$1], [$2])
210
211  dnl Add $INC[]NAME to CPPFLAGS before performing the following checks,
212  dnl because if the user has installed lib[]Name and not disabled its use
213  dnl via --without-lib[]Name-prefix, he wants to use it.
214  ac_save_CPPFLAGS="$CPPFLAGS"
215  AC_LIB_APPENDTOVAR([CPPFLAGS], [$INC]NAME)
216
217  AC_CACHE_CHECK([for lib[]$1], [ac_cv_lib[]Name], [
218    ac_save_LIBS="$LIBS"
219    dnl If $LIB[]NAME contains some -l options, add it to the end of LIBS,
220    dnl because these -l options might require -L options that are present in
221    dnl LIBS. -l options benefit only from the -L options listed before it.
222    dnl Otherwise, add it to the front of LIBS, because it may be a static
223    dnl library that depends on another static library that is present in LIBS.
224    dnl Static libraries benefit only from the static libraries listed after
225    dnl it.
226    case " $LIB[]NAME" in
227      *" -l"*) LIBS="$LIBS $LIB[]NAME" ;;
228      *)       LIBS="$LIB[]NAME $LIBS" ;;
229    esac
230    AC_LINK_IFELSE(
231      [AC_LANG_PROGRAM([[$3]], [[$4]])],
232      [ac_cv_lib[]Name=yes],
233      [ac_cv_lib[]Name='m4_if([$5], [], [no], [[$5]])'])
234    LIBS="$ac_save_LIBS"
235  ])
236  if test "$ac_cv_lib[]Name" = yes; then
237    HAVE_LIB[]NAME=yes
238    AC_DEFINE([HAVE_LIB]NAME, 1, [Define if you have the lib][$1 library.])
239    AC_MSG_CHECKING([how to link with lib[]$1])
240    AC_MSG_RESULT([$LIB[]NAME])
241  else
242    HAVE_LIB[]NAME=no
243    dnl If $LIB[]NAME didn't lead to a usable library, we don't need
244    dnl $INC[]NAME either.
245    CPPFLAGS="$ac_save_CPPFLAGS"
246    LIB[]NAME=
247    LTLIB[]NAME=
248    LIB[]NAME[]_PREFIX=
249  fi
250  AC_SUBST([HAVE_LIB]NAME)
251  AC_SUBST([LIB]NAME)
252  AC_SUBST([LTLIB]NAME)
253  AC_SUBST([LIB]NAME[_PREFIX])
254  popdef([NAME])
255  popdef([Name])
256])
257
258dnl Determine the platform dependent parameters needed to use rpath:
259dnl   acl_libext,
260dnl   acl_shlibext,
261dnl   acl_libname_spec,
262dnl   acl_library_names_spec,
263dnl   acl_hardcode_libdir_flag_spec,
264dnl   acl_hardcode_libdir_separator,
265dnl   acl_hardcode_direct,
266dnl   acl_hardcode_minus_L.
267AC_DEFUN([AC_LIB_RPATH],
268[
269  dnl Tell automake >= 1.10 to complain if config.rpath is missing.
270  m4_ifdef([AC_REQUIRE_AUX_FILE], [AC_REQUIRE_AUX_FILE([config.rpath])])
271  AC_REQUIRE([AC_PROG_CC])                dnl we use $CC, $GCC, $LDFLAGS
272  AC_REQUIRE([AC_LIB_PROG_LD])            dnl we use $LD, $with_gnu_ld
273  AC_REQUIRE([AC_CANONICAL_HOST])         dnl we use $host
274  AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT]) dnl we use $ac_aux_dir
275  AC_CACHE_CHECK([for shared library run path origin], [acl_cv_rpath], [
276    CC="$CC" GCC="$GCC" LDFLAGS="$LDFLAGS" LD="$LD" with_gnu_ld="$with_gnu_ld" \
277    ${CONFIG_SHELL-/bin/sh} "$ac_aux_dir/config.rpath" "$host" > conftest.sh
278    . ./conftest.sh
279    rm -f ./conftest.sh
280    acl_cv_rpath=done
281  ])
282  wl="$acl_cv_wl"
283  acl_libext="$acl_cv_libext"
284  acl_shlibext="$acl_cv_shlibext"
285  acl_libname_spec="$acl_cv_libname_spec"
286  acl_library_names_spec="$acl_cv_library_names_spec"
287  acl_hardcode_libdir_flag_spec="$acl_cv_hardcode_libdir_flag_spec"
288  acl_hardcode_libdir_separator="$acl_cv_hardcode_libdir_separator"
289  acl_hardcode_direct="$acl_cv_hardcode_direct"
290  acl_hardcode_minus_L="$acl_cv_hardcode_minus_L"
291  dnl Determine whether the user wants rpath handling at all.
292  AC_ARG_ENABLE([rpath],
293    [  --disable-rpath         do not hardcode runtime library paths],
294    :, enable_rpath=yes)
295])
296
297dnl AC_LIB_FROMPACKAGE(name, package)
298dnl declares that libname comes from the given package. The configure file
299dnl will then not have a --with-libname-prefix option but a
300dnl --with-package-prefix option. Several libraries can come from the same
301dnl package. This declaration must occur before an AC_LIB_LINKFLAGS or similar
302dnl macro call that searches for libname.
303AC_DEFUN([AC_LIB_FROMPACKAGE],
304[
305  pushdef([NAME],[m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./+-],
306                                   [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])])
307  define([acl_frompackage_]NAME, [$2])
308  popdef([NAME])
309  pushdef([PACK],[$2])
310  pushdef([PACKUP],[m4_translit(PACK,[abcdefghijklmnopqrstuvwxyz./+-],
311                                     [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])])
312  define([acl_libsinpackage_]PACKUP,
313    m4_ifdef([acl_libsinpackage_]PACKUP, [m4_defn([acl_libsinpackage_]PACKUP)[, ]],)[lib$1])
314  popdef([PACKUP])
315  popdef([PACK])
316])
317
318dnl AC_LIB_LINKFLAGS_BODY(name [, dependencies]) searches for libname and
319dnl the libraries corresponding to explicit and implicit dependencies.
320dnl Sets the LIB${NAME}, LTLIB${NAME} and INC${NAME} variables.
321dnl Also, sets the LIB${NAME}_PREFIX variable to nonempty if libname was found
322dnl in ${LIB${NAME}_PREFIX}/$acl_libdirstem.
323AC_DEFUN([AC_LIB_LINKFLAGS_BODY],
324[
325  AC_REQUIRE([AC_LIB_PREPARE_MULTILIB])
326  pushdef([NAME],[m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./+-],
327                                   [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])])
328  pushdef([PACK],[m4_ifdef([acl_frompackage_]NAME, [acl_frompackage_]NAME, lib[$1])])
329  pushdef([PACKUP],[m4_translit(PACK,[abcdefghijklmnopqrstuvwxyz./+-],
330                                     [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])])
331  pushdef([PACKLIBS],[m4_ifdef([acl_frompackage_]NAME, [acl_libsinpackage_]PACKUP, lib[$1])])
332  dnl Autoconf >= 2.61 supports dots in --with options.
333  pushdef([P_A_C_K],[m4_if(m4_version_compare(m4_defn([m4_PACKAGE_VERSION]),[2.61]),[-1],[m4_translit(PACK,[.],[_])],PACK)])
334  dnl By default, look in $includedir and $libdir.
335  use_additional=yes
336  AC_LIB_WITH_FINAL_PREFIX([
337    eval additional_includedir=\"$includedir\"
338    eval additional_libdir=\"$libdir\"
339  ])
340  AC_ARG_WITH(P_A_C_K[-prefix],
341[[  --with-]]P_A_C_K[[-prefix[=DIR]  search for ]PACKLIBS[ in DIR/include and DIR/lib
342  --without-]]P_A_C_K[[-prefix     don't search for ]PACKLIBS[ in includedir and libdir]],
343[
344    if test "X$withval" = "Xno"; then
345      use_additional=no
346    else
347      if test "X$withval" = "X"; then
348        AC_LIB_WITH_FINAL_PREFIX([
349          eval additional_includedir=\"$includedir\"
350          eval additional_libdir=\"$libdir\"
351        ])
352      else
353        additional_includedir="$withval/include"
354        additional_libdir="$withval/$acl_libdirstem"
355        if test "$acl_libdirstem2" != "$acl_libdirstem" \
356           && ! test -d "$withval/$acl_libdirstem"; then
357          additional_libdir="$withval/$acl_libdirstem2"
358        fi
359      fi
360    fi
361])
362  dnl Search the library and its dependencies in $additional_libdir and
363  dnl $LDFLAGS. Using breadth-first-seach.
364  LIB[]NAME=
365  LTLIB[]NAME=
366  INC[]NAME=
367  LIB[]NAME[]_PREFIX=
368  dnl HAVE_LIB${NAME} is an indicator that LIB${NAME}, LTLIB${NAME} have been
369  dnl computed. So it has to be reset here.
370  HAVE_LIB[]NAME=
371  rpathdirs=
372  ltrpathdirs=
373  names_already_handled=
374  names_next_round='$1 $2'
375  while test -n "$names_next_round"; do
376    names_this_round="$names_next_round"
377    names_next_round=
378    for name in $names_this_round; do
379      already_handled=
380      for n in $names_already_handled; do
381        if test "$n" = "$name"; then
382          already_handled=yes
383          break
384        fi
385      done
386      if test -z "$already_handled"; then
387        names_already_handled="$names_already_handled $name"
388        dnl See if it was already located by an earlier AC_LIB_LINKFLAGS
389        dnl or AC_LIB_HAVE_LINKFLAGS call.
390        uppername=`echo "$name" | sed -e 'y|abcdefghijklmnopqrstuvwxyz./+-|ABCDEFGHIJKLMNOPQRSTUVWXYZ____|'`
391        eval value=\"\$HAVE_LIB$uppername\"
392        if test -n "$value"; then
393          if test "$value" = yes; then
394            eval value=\"\$LIB$uppername\"
395            test -z "$value" || LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$value"
396            eval value=\"\$LTLIB$uppername\"
397            test -z "$value" || LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }$value"
398          else
399            dnl An earlier call to AC_LIB_HAVE_LINKFLAGS has determined
400            dnl that this library doesn't exist. So just drop it.
401            :
402          fi
403        else
404          dnl Search the library lib$name in $additional_libdir and $LDFLAGS
405          dnl and the already constructed $LIBNAME/$LTLIBNAME.
406          found_dir=
407          found_la=
408          found_so=
409          found_a=
410          eval libname=\"$acl_libname_spec\"    # typically: libname=lib$name
411          if test -n "$acl_shlibext"; then
412            shrext=".$acl_shlibext"             # typically: shrext=.so
413          else
414            shrext=
415          fi
416          if test $use_additional = yes; then
417            dir="$additional_libdir"
418            dnl The same code as in the loop below:
419            dnl First look for a shared library.
420            if test -n "$acl_shlibext"; then
421              if test -f "$dir/$libname$shrext"; then
422                found_dir="$dir"
423                found_so="$dir/$libname$shrext"
424              else
425                if test "$acl_library_names_spec" = '$libname$shrext$versuffix'; then
426                  ver=`(cd "$dir" && \
427                        for f in "$libname$shrext".*; do echo "$f"; done \
428                        | sed -e "s,^$libname$shrext\\\\.,," \
429                        | sort -t '.' -n -r -k1,1 -k2,2 -k3,3 -k4,4 -k5,5 \
430                        | sed 1q ) 2>/dev/null`
431                  if test -n "$ver" && test -f "$dir/$libname$shrext.$ver"; then
432                    found_dir="$dir"
433                    found_so="$dir/$libname$shrext.$ver"
434                  fi
435                else
436                  eval library_names=\"$acl_library_names_spec\"
437                  for f in $library_names; do
438                    if test -f "$dir/$f"; then
439                      found_dir="$dir"
440                      found_so="$dir/$f"
441                      break
442                    fi
443                  done
444                fi
445              fi
446            fi
447            dnl Then look for a static library.
448            if test "X$found_dir" = "X"; then
449              if test -f "$dir/$libname.$acl_libext"; then
450                found_dir="$dir"
451                found_a="$dir/$libname.$acl_libext"
452              fi
453            fi
454            if test "X$found_dir" != "X"; then
455              if test -f "$dir/$libname.la"; then
456                found_la="$dir/$libname.la"
457              fi
458            fi
459          fi
460          if test "X$found_dir" = "X"; then
461            for x in $LDFLAGS $LTLIB[]NAME; do
462              AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
463              case "$x" in
464                -L*)
465                  dir=`echo "X$x" | sed -e 's/^X-L//'`
466                  dnl First look for a shared library.
467                  if test -n "$acl_shlibext"; then
468                    if test -f "$dir/$libname$shrext"; then
469                      found_dir="$dir"
470                      found_so="$dir/$libname$shrext"
471                    else
472                      if test "$acl_library_names_spec" = '$libname$shrext$versuffix'; then
473                        ver=`(cd "$dir" && \
474                              for f in "$libname$shrext".*; do echo "$f"; done \
475                              | sed -e "s,^$libname$shrext\\\\.,," \
476                              | sort -t '.' -n -r -k1,1 -k2,2 -k3,3 -k4,4 -k5,5 \
477                              | sed 1q ) 2>/dev/null`
478                        if test -n "$ver" && test -f "$dir/$libname$shrext.$ver"; then
479                          found_dir="$dir"
480                          found_so="$dir/$libname$shrext.$ver"
481                        fi
482                      else
483                        eval library_names=\"$acl_library_names_spec\"
484                        for f in $library_names; do
485                          if test -f "$dir/$f"; then
486                            found_dir="$dir"
487                            found_so="$dir/$f"
488                            break
489                          fi
490                        done
491                      fi
492                    fi
493                  fi
494                  dnl Then look for a static library.
495                  if test "X$found_dir" = "X"; then
496                    if test -f "$dir/$libname.$acl_libext"; then
497                      found_dir="$dir"
498                      found_a="$dir/$libname.$acl_libext"
499                    fi
500                  fi
501                  if test "X$found_dir" != "X"; then
502                    if test -f "$dir/$libname.la"; then
503                      found_la="$dir/$libname.la"
504                    fi
505                  fi
506                  ;;
507              esac
508              if test "X$found_dir" != "X"; then
509                break
510              fi
511            done
512          fi
513          if test "X$found_dir" != "X"; then
514            dnl Found the library.
515            LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-L$found_dir -l$name"
516            if test "X$found_so" != "X"; then
517              dnl Linking with a shared library. We attempt to hardcode its
518              dnl directory into the executable's runpath, unless it's the
519              dnl standard /usr/lib.
520              if test "$enable_rpath" = no \
521                 || test "X$found_dir" = "X/usr/$acl_libdirstem" \
522                 || test "X$found_dir" = "X/usr/$acl_libdirstem2"; then
523                dnl No hardcoding is needed.
524                LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so"
525              else
526                dnl Use an explicit option to hardcode DIR into the resulting
527                dnl binary.
528                dnl Potentially add DIR to ltrpathdirs.
529                dnl The ltrpathdirs will be appended to $LTLIBNAME at the end.
530                haveit=
531                for x in $ltrpathdirs; do
532                  if test "X$x" = "X$found_dir"; then
533                    haveit=yes
534                    break
535                  fi
536                done
537                if test -z "$haveit"; then
538                  ltrpathdirs="$ltrpathdirs $found_dir"
539                fi
540                dnl The hardcoding into $LIBNAME is system dependent.
541                if test "$acl_hardcode_direct" = yes; then
542                  dnl Using DIR/libNAME.so during linking hardcodes DIR into the
543                  dnl resulting binary.
544                  LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so"
545                else
546                  if test -n "$acl_hardcode_libdir_flag_spec" && test "$acl_hardcode_minus_L" = no; then
547                    dnl Use an explicit option to hardcode DIR into the resulting
548                    dnl binary.
549                    LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so"
550                    dnl Potentially add DIR to rpathdirs.
551                    dnl The rpathdirs will be appended to $LIBNAME at the end.
552                    haveit=
553                    for x in $rpathdirs; do
554                      if test "X$x" = "X$found_dir"; then
555                        haveit=yes
556                        break
557                      fi
558                    done
559                    if test -z "$haveit"; then
560                      rpathdirs="$rpathdirs $found_dir"
561                    fi
562                  else
563                    dnl Rely on "-L$found_dir".
564                    dnl But don't add it if it's already contained in the LDFLAGS
565                    dnl or the already constructed $LIBNAME
566                    haveit=
567                    for x in $LDFLAGS $LIB[]NAME; do
568                      AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
569                      if test "X$x" = "X-L$found_dir"; then
570                        haveit=yes
571                        break
572                      fi
573                    done
574                    if test -z "$haveit"; then
575                      LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$found_dir"
576                    fi
577                    if test "$acl_hardcode_minus_L" != no; then
578                      dnl FIXME: Not sure whether we should use
579                      dnl "-L$found_dir -l$name" or "-L$found_dir $found_so"
580                      dnl here.
581                      LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so"
582                    else
583                      dnl We cannot use $acl_hardcode_runpath_var and LD_RUN_PATH
584                      dnl here, because this doesn't fit in flags passed to the
585                      dnl compiler. So give up. No hardcoding. This affects only
586                      dnl very old systems.
587                      dnl FIXME: Not sure whether we should use
588                      dnl "-L$found_dir -l$name" or "-L$found_dir $found_so"
589                      dnl here.
590                      LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-l$name"
591                    fi
592                  fi
593                fi
594              fi
595            else
596              if test "X$found_a" != "X"; then
597                dnl Linking with a static library.
598                LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_a"
599              else
600                dnl We shouldn't come here, but anyway it's good to have a
601                dnl fallback.
602                LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$found_dir -l$name"
603              fi
604            fi
605            dnl Assume the include files are nearby.
606            additional_includedir=
607            case "$found_dir" in
608              */$acl_libdirstem | */$acl_libdirstem/)
609                basedir=`echo "X$found_dir" | sed -e 's,^X,,' -e "s,/$acl_libdirstem/"'*$,,'`
610                if test "$name" = '$1'; then
611                  LIB[]NAME[]_PREFIX="$basedir"
612                fi
613                additional_includedir="$basedir/include"
614                ;;
615              */$acl_libdirstem2 | */$acl_libdirstem2/)
616                basedir=`echo "X$found_dir" | sed -e 's,^X,,' -e "s,/$acl_libdirstem2/"'*$,,'`
617                if test "$name" = '$1'; then
618                  LIB[]NAME[]_PREFIX="$basedir"
619                fi
620                additional_includedir="$basedir/include"
621                ;;
622            esac
623            if test "X$additional_includedir" != "X"; then
624              dnl Potentially add $additional_includedir to $INCNAME.
625              dnl But don't add it
626              dnl   1. if it's the standard /usr/include,
627              dnl   2. if it's /usr/local/include and we are using GCC on Linux,
628              dnl   3. if it's already present in $CPPFLAGS or the already
629              dnl      constructed $INCNAME,
630              dnl   4. if it doesn't exist as a directory.
631              if test "X$additional_includedir" != "X/usr/include"; then
632                haveit=
633                if test "X$additional_includedir" = "X/usr/local/include"; then
634                  if test -n "$GCC"; then
635                    case $host_os in
636                      linux* | gnu* | k*bsd*-gnu) haveit=yes;;
637                    esac
638                  fi
639                fi
640                if test -z "$haveit"; then
641                  for x in $CPPFLAGS $INC[]NAME; do
642                    AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
643                    if test "X$x" = "X-I$additional_includedir"; then
644                      haveit=yes
645                      break
646                    fi
647                  done
648                  if test -z "$haveit"; then
649                    if test -d "$additional_includedir"; then
650                      dnl Really add $additional_includedir to $INCNAME.
651                      INC[]NAME="${INC[]NAME}${INC[]NAME:+ }-I$additional_includedir"
652                    fi
653                  fi
654                fi
655              fi
656            fi
657            dnl Look for dependencies.
658            if test -n "$found_la"; then
659              dnl Read the .la file. It defines the variables
660              dnl dlname, library_names, old_library, dependency_libs, current,
661              dnl age, revision, installed, dlopen, dlpreopen, libdir.
662              save_libdir="$libdir"
663              case "$found_la" in
664                */* | *\\*) . "$found_la" ;;
665                *) . "./$found_la" ;;
666              esac
667              libdir="$save_libdir"
668              dnl We use only dependency_libs.
669              for dep in $dependency_libs; do
670                case "$dep" in
671                  -L*)
672                    additional_libdir=`echo "X$dep" | sed -e 's/^X-L//'`
673                    dnl Potentially add $additional_libdir to $LIBNAME and $LTLIBNAME.
674                    dnl But don't add it
675                    dnl   1. if it's the standard /usr/lib,
676                    dnl   2. if it's /usr/local/lib and we are using GCC on Linux,
677                    dnl   3. if it's already present in $LDFLAGS or the already
678                    dnl      constructed $LIBNAME,
679                    dnl   4. if it doesn't exist as a directory.
680                    if test "X$additional_libdir" != "X/usr/$acl_libdirstem" \
681                       && test "X$additional_libdir" != "X/usr/$acl_libdirstem2"; then
682                      haveit=
683                      if test "X$additional_libdir" = "X/usr/local/$acl_libdirstem" \
684                         || test "X$additional_libdir" = "X/usr/local/$acl_libdirstem2"; then
685                        if test -n "$GCC"; then
686                          case $host_os in
687                            linux* | gnu* | k*bsd*-gnu) haveit=yes;;
688                          esac
689                        fi
690                      fi
691                      if test -z "$haveit"; then
692                        haveit=
693                        for x in $LDFLAGS $LIB[]NAME; do
694                          AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
695                          if test "X$x" = "X-L$additional_libdir"; then
696                            haveit=yes
697                            break
698                          fi
699                        done
700                        if test -z "$haveit"; then
701                          if test -d "$additional_libdir"; then
702                            dnl Really add $additional_libdir to $LIBNAME.
703                            LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$additional_libdir"
704                          fi
705                        fi
706                        haveit=
707                        for x in $LDFLAGS $LTLIB[]NAME; do
708                          AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
709                          if test "X$x" = "X-L$additional_libdir"; then
710                            haveit=yes
711                            break
712                          fi
713                        done
714                        if test -z "$haveit"; then
715                          if test -d "$additional_libdir"; then
716                            dnl Really add $additional_libdir to $LTLIBNAME.
717                            LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-L$additional_libdir"
718                          fi
719                        fi
720                      fi
721                    fi
722                    ;;
723                  -R*)
724                    dir=`echo "X$dep" | sed -e 's/^X-R//'`
725                    if test "$enable_rpath" != no; then
726                      dnl Potentially add DIR to rpathdirs.
727                      dnl The rpathdirs will be appended to $LIBNAME at the end.
728                      haveit=
729                      for x in $rpathdirs; do
730                        if test "X$x" = "X$dir"; then
731                          haveit=yes
732                          break
733                        fi
734                      done
735                      if test -z "$haveit"; then
736                        rpathdirs="$rpathdirs $dir"
737                      fi
738                      dnl Potentially add DIR to ltrpathdirs.
739                      dnl The ltrpathdirs will be appended to $LTLIBNAME at the end.
740                      haveit=
741                      for x in $ltrpathdirs; do
742                        if test "X$x" = "X$dir"; then
743                          haveit=yes
744                          break
745                        fi
746                      done
747                      if test -z "$haveit"; then
748                        ltrpathdirs="$ltrpathdirs $dir"
749                      fi
750                    fi
751                    ;;
752                  -l*)
753                    dnl Handle this in the next round.
754                    names_next_round="$names_next_round "`echo "X$dep" | sed -e 's/^X-l//'`
755                    ;;
756                  *.la)
757                    dnl Handle this in the next round. Throw away the .la's
758                    dnl directory; it is already contained in a preceding -L
759                    dnl option.
760                    names_next_round="$names_next_round "`echo "X$dep" | sed -e 's,^X.*/,,' -e 's,^lib,,' -e 's,\.la$,,'`
761                    ;;
762                  *)
763                    dnl Most likely an immediate library name.
764                    LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$dep"
765                    LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }$dep"
766                    ;;
767                esac
768              done
769            fi
770          else
771            dnl Didn't find the library; assume it is in the system directories
772            dnl known to the linker and runtime loader. (All the system
773            dnl directories known to the linker should also be known to the
774            dnl runtime loader, otherwise the system is severely misconfigured.)
775            LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-l$name"
776            LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-l$name"
777          fi
778        fi
779      fi
780    done
781  done
782  if test "X$rpathdirs" != "X"; then
783    if test -n "$acl_hardcode_libdir_separator"; then
784      dnl Weird platform: only the last -rpath option counts, the user must
785      dnl pass all path elements in one option. We can arrange that for a
786      dnl single library, but not when more than one $LIBNAMEs are used.
787      alldirs=
788      for found_dir in $rpathdirs; do
789        alldirs="${alldirs}${alldirs:+$acl_hardcode_libdir_separator}$found_dir"
790      done
791      dnl Note: acl_hardcode_libdir_flag_spec uses $libdir and $wl.
792      acl_save_libdir="$libdir"
793      libdir="$alldirs"
794      eval flag=\"$acl_hardcode_libdir_flag_spec\"
795      libdir="$acl_save_libdir"
796      LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$flag"
797    else
798      dnl The -rpath options are cumulative.
799      for found_dir in $rpathdirs; do
800        acl_save_libdir="$libdir"
801        libdir="$found_dir"
802        eval flag=\"$acl_hardcode_libdir_flag_spec\"
803        libdir="$acl_save_libdir"
804        LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$flag"
805      done
806    fi
807  fi
808  if test "X$ltrpathdirs" != "X"; then
809    dnl When using libtool, the option that works for both libraries and
810    dnl executables is -R. The -R options are cumulative.
811    for found_dir in $ltrpathdirs; do
812      LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-R$found_dir"
813    done
814  fi
815  popdef([P_A_C_K])
816  popdef([PACKLIBS])
817  popdef([PACKUP])
818  popdef([PACK])
819  popdef([NAME])
820])
821
822dnl AC_LIB_APPENDTOVAR(VAR, CONTENTS) appends the elements of CONTENTS to VAR,
823dnl unless already present in VAR.
824dnl Works only for CPPFLAGS, not for LIB* variables because that sometimes
825dnl contains two or three consecutive elements that belong together.
826AC_DEFUN([AC_LIB_APPENDTOVAR],
827[
828  for element in [$2]; do
829    haveit=
830    for x in $[$1]; do
831      AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
832      if test "X$x" = "X$element"; then
833        haveit=yes
834        break
835      fi
836    done
837    if test -z "$haveit"; then
838      [$1]="${[$1]}${[$1]:+ }$element"
839    fi
840  done
841])
842
843dnl For those cases where a variable contains several -L and -l options
844dnl referring to unknown libraries and directories, this macro determines the
845dnl necessary additional linker options for the runtime path.
846dnl AC_LIB_LINKFLAGS_FROM_LIBS([LDADDVAR], [LIBSVALUE], [USE-LIBTOOL])
847dnl sets LDADDVAR to linker options needed together with LIBSVALUE.
848dnl If USE-LIBTOOL evaluates to non-empty, linking with libtool is assumed,
849dnl otherwise linking without libtool is assumed.
850AC_DEFUN([AC_LIB_LINKFLAGS_FROM_LIBS],
851[
852  AC_REQUIRE([AC_LIB_RPATH])
853  AC_REQUIRE([AC_LIB_PREPARE_MULTILIB])
854  $1=
855  if test "$enable_rpath" != no; then
856    if test -n "$acl_hardcode_libdir_flag_spec" && test "$acl_hardcode_minus_L" = no; then
857      dnl Use an explicit option to hardcode directories into the resulting
858      dnl binary.
859      rpathdirs=
860      next=
861      for opt in $2; do
862        if test -n "$next"; then
863          dir="$next"
864          dnl No need to hardcode the standard /usr/lib.
865          if test "X$dir" != "X/usr/$acl_libdirstem" \
866             && test "X$dir" != "X/usr/$acl_libdirstem2"; then
867            rpathdirs="$rpathdirs $dir"
868          fi
869          next=
870        else
871          case $opt in
872            -L) next=yes ;;
873            -L*) dir=`echo "X$opt" | sed -e 's,^X-L,,'`
874                 dnl No need to hardcode the standard /usr/lib.
875                 if test "X$dir" != "X/usr/$acl_libdirstem" \
876                    && test "X$dir" != "X/usr/$acl_libdirstem2"; then
877                   rpathdirs="$rpathdirs $dir"
878                 fi
879                 next= ;;
880            *) next= ;;
881          esac
882        fi
883      done
884      if test "X$rpathdirs" != "X"; then
885        if test -n ""$3""; then
886          dnl libtool is used for linking. Use -R options.
887          for dir in $rpathdirs; do
888            $1="${$1}${$1:+ }-R$dir"
889          done
890        else
891          dnl The linker is used for linking directly.
892          if test -n "$acl_hardcode_libdir_separator"; then
893            dnl Weird platform: only the last -rpath option counts, the user
894            dnl must pass all path elements in one option.
895            alldirs=
896            for dir in $rpathdirs; do
897              alldirs="${alldirs}${alldirs:+$acl_hardcode_libdir_separator}$dir"
898            done
899            acl_save_libdir="$libdir"
900            libdir="$alldirs"
901            eval flag=\"$acl_hardcode_libdir_flag_spec\"
902            libdir="$acl_save_libdir"
903            $1="$flag"
904          else
905            dnl The -rpath options are cumulative.
906            for dir in $rpathdirs; do
907              acl_save_libdir="$libdir"
908              libdir="$dir"
909              eval flag=\"$acl_hardcode_libdir_flag_spec\"
910              libdir="$acl_save_libdir"
911              $1="${$1}${$1:+ }$flag"
912            done
913          fi
914        fi
915      fi
916    fi
917  fi
918  AC_SUBST([$1])
919])
920
921# lib-prefix.m4 serial 7 (gettext-0.18)
922dnl Copyright (C) 2001-2005, 2008-2016 Free Software Foundation, Inc.
923dnl This file is free software; the Free Software Foundation
924dnl gives unlimited permission to copy and/or distribute it,
925dnl with or without modifications, as long as this notice is preserved.
926
927dnl From Bruno Haible.
928
929dnl AC_LIB_ARG_WITH is synonymous to AC_ARG_WITH in autoconf-2.13, and
930dnl similar to AC_ARG_WITH in autoconf 2.52...2.57 except that is doesn't
931dnl require excessive bracketing.
932ifdef([AC_HELP_STRING],
933[AC_DEFUN([AC_LIB_ARG_WITH], [AC_ARG_WITH([$1],[[$2]],[$3],[$4])])],
934[AC_DEFUN([AC_][LIB_ARG_WITH], [AC_ARG_WITH([$1],[$2],[$3],[$4])])])
935
936dnl AC_LIB_PREFIX adds to the CPPFLAGS and LDFLAGS the flags that are needed
937dnl to access previously installed libraries. The basic assumption is that
938dnl a user will want packages to use other packages he previously installed
939dnl with the same --prefix option.
940dnl This macro is not needed if only AC_LIB_LINKFLAGS is used to locate
941dnl libraries, but is otherwise very convenient.
942AC_DEFUN([AC_LIB_PREFIX],
943[
944  AC_BEFORE([$0], [AC_LIB_LINKFLAGS])
945  AC_REQUIRE([AC_PROG_CC])
946  AC_REQUIRE([AC_CANONICAL_HOST])
947  AC_REQUIRE([AC_LIB_PREPARE_MULTILIB])
948  AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
949  dnl By default, look in $includedir and $libdir.
950  use_additional=yes
951  AC_LIB_WITH_FINAL_PREFIX([
952    eval additional_includedir=\"$includedir\"
953    eval additional_libdir=\"$libdir\"
954  ])
955  AC_LIB_ARG_WITH([lib-prefix],
956[  --with-lib-prefix[=DIR] search for libraries in DIR/include and DIR/lib
957  --without-lib-prefix    don't search for libraries in includedir and libdir],
958[
959    if test "X$withval" = "Xno"; then
960      use_additional=no
961    else
962      if test "X$withval" = "X"; then
963        AC_LIB_WITH_FINAL_PREFIX([
964          eval additional_includedir=\"$includedir\"
965          eval additional_libdir=\"$libdir\"
966        ])
967      else
968        additional_includedir="$withval/include"
969        additional_libdir="$withval/$acl_libdirstem"
970      fi
971    fi
972])
973  if test $use_additional = yes; then
974    dnl Potentially add $additional_includedir to $CPPFLAGS.
975    dnl But don't add it
976    dnl   1. if it's the standard /usr/include,
977    dnl   2. if it's already present in $CPPFLAGS,
978    dnl   3. if it's /usr/local/include and we are using GCC on Linux,
979    dnl   4. if it doesn't exist as a directory.
980    if test "X$additional_includedir" != "X/usr/include"; then
981      haveit=
982      for x in $CPPFLAGS; do
983        AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
984        if test "X$x" = "X-I$additional_includedir"; then
985          haveit=yes
986          break
987        fi
988      done
989      if test -z "$haveit"; then
990        if test "X$additional_includedir" = "X/usr/local/include"; then
991          if test -n "$GCC"; then
992            case $host_os in
993              linux* | gnu* | k*bsd*-gnu) haveit=yes;;
994            esac
995          fi
996        fi
997        if test -z "$haveit"; then
998          if test -d "$additional_includedir"; then
999            dnl Really add $additional_includedir to $CPPFLAGS.
1000            CPPFLAGS="${CPPFLAGS}${CPPFLAGS:+ }-I$additional_includedir"
1001          fi
1002        fi
1003      fi
1004    fi
1005    dnl Potentially add $additional_libdir to $LDFLAGS.
1006    dnl But don't add it
1007    dnl   1. if it's the standard /usr/lib,
1008    dnl   2. if it's already present in $LDFLAGS,
1009    dnl   3. if it's /usr/local/lib and we are using GCC on Linux,
1010    dnl   4. if it doesn't exist as a directory.
1011    if test "X$additional_libdir" != "X/usr/$acl_libdirstem"; then
1012      haveit=
1013      for x in $LDFLAGS; do
1014        AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
1015        if test "X$x" = "X-L$additional_libdir"; then
1016          haveit=yes
1017          break
1018        fi
1019      done
1020      if test -z "$haveit"; then
1021        if test "X$additional_libdir" = "X/usr/local/$acl_libdirstem"; then
1022          if test -n "$GCC"; then
1023            case $host_os in
1024              linux*) haveit=yes;;
1025            esac
1026          fi
1027        fi
1028        if test -z "$haveit"; then
1029          if test -d "$additional_libdir"; then
1030            dnl Really add $additional_libdir to $LDFLAGS.
1031            LDFLAGS="${LDFLAGS}${LDFLAGS:+ }-L$additional_libdir"
1032          fi
1033        fi
1034      fi
1035    fi
1036  fi
1037])
1038
1039dnl AC_LIB_PREPARE_PREFIX creates variables acl_final_prefix,
1040dnl acl_final_exec_prefix, containing the values to which $prefix and
1041dnl $exec_prefix will expand at the end of the configure script.
1042AC_DEFUN([AC_LIB_PREPARE_PREFIX],
1043[
1044  dnl Unfortunately, prefix and exec_prefix get only finally determined
1045  dnl at the end of configure.
1046  if test "X$prefix" = "XNONE"; then
1047    acl_final_prefix="$ac_default_prefix"
1048  else
1049    acl_final_prefix="$prefix"
1050  fi
1051  if test "X$exec_prefix" = "XNONE"; then
1052    acl_final_exec_prefix='${prefix}'
1053  else
1054    acl_final_exec_prefix="$exec_prefix"
1055  fi
1056  acl_save_prefix="$prefix"
1057  prefix="$acl_final_prefix"
1058  eval acl_final_exec_prefix=\"$acl_final_exec_prefix\"
1059  prefix="$acl_save_prefix"
1060])
1061
1062dnl AC_LIB_WITH_FINAL_PREFIX([statement]) evaluates statement, with the
1063dnl variables prefix and exec_prefix bound to the values they will have
1064dnl at the end of the configure script.
1065AC_DEFUN([AC_LIB_WITH_FINAL_PREFIX],
1066[
1067  acl_save_prefix="$prefix"
1068  prefix="$acl_final_prefix"
1069  acl_save_exec_prefix="$exec_prefix"
1070  exec_prefix="$acl_final_exec_prefix"
1071  $1
1072  exec_prefix="$acl_save_exec_prefix"
1073  prefix="$acl_save_prefix"
1074])
1075
1076dnl AC_LIB_PREPARE_MULTILIB creates
1077dnl - a variable acl_libdirstem, containing the basename of the libdir, either
1078dnl   "lib" or "lib64" or "lib/64",
1079dnl - a variable acl_libdirstem2, as a secondary possible value for
1080dnl   acl_libdirstem, either the same as acl_libdirstem or "lib/sparcv9" or
1081dnl   "lib/amd64".
1082AC_DEFUN([AC_LIB_PREPARE_MULTILIB],
1083[
1084  dnl There is no formal standard regarding lib and lib64.
1085  dnl On glibc systems, the current practice is that on a system supporting
1086  dnl 32-bit and 64-bit instruction sets or ABIs, 64-bit libraries go under
1087  dnl $prefix/lib64 and 32-bit libraries go under $prefix/lib. We determine
1088  dnl the compiler's default mode by looking at the compiler's library search
1089  dnl path. If at least one of its elements ends in /lib64 or points to a
1090  dnl directory whose absolute pathname ends in /lib64, we assume a 64-bit ABI.
1091  dnl Otherwise we use the default, namely "lib".
1092  dnl On Solaris systems, the current practice is that on a system supporting
1093  dnl 32-bit and 64-bit instruction sets or ABIs, 64-bit libraries go under
1094  dnl $prefix/lib/64 (which is a symlink to either $prefix/lib/sparcv9 or
1095  dnl $prefix/lib/amd64) and 32-bit libraries go under $prefix/lib.
1096  AC_REQUIRE([AC_CANONICAL_HOST])
1097  acl_libdirstem=lib
1098  acl_libdirstem2=
1099  case "$host_os" in
1100    solaris*)
1101      dnl See Solaris 10 Software Developer Collection > Solaris 64-bit Developer's Guide > The Development Environment
1102      dnl <http://docs.sun.com/app/docs/doc/816-5138/dev-env?l=en&a=view>.
1103      dnl "Portable Makefiles should refer to any library directories using the 64 symbolic link."
1104      dnl But we want to recognize the sparcv9 or amd64 subdirectory also if the
1105      dnl symlink is missing, so we set acl_libdirstem2 too.
1106      AC_CACHE_CHECK([for 64-bit host], [gl_cv_solaris_64bit],
1107        [AC_EGREP_CPP([sixtyfour bits], [
1108#ifdef _LP64
1109sixtyfour bits
1110#endif
1111           ], [gl_cv_solaris_64bit=yes], [gl_cv_solaris_64bit=no])
1112        ])
1113      if test $gl_cv_solaris_64bit = yes; then
1114        acl_libdirstem=lib/64
1115        case "$host_cpu" in
1116          sparc*)        acl_libdirstem2=lib/sparcv9 ;;
1117          i*86 | x86_64) acl_libdirstem2=lib/amd64 ;;
1118        esac
1119      fi
1120      ;;
1121    *)
1122      searchpath=`(LC_ALL=C $CC -print-search-dirs) 2>/dev/null | sed -n -e 's,^libraries: ,,p' | sed -e 's,^=,,'`
1123      if test -n "$searchpath"; then
1124        acl_save_IFS="${IFS= 	}"; IFS=":"
1125        for searchdir in $searchpath; do
1126          if test -d "$searchdir"; then
1127            case "$searchdir" in
1128              */lib64/ | */lib64 ) acl_libdirstem=lib64 ;;
1129              */../ | */.. )
1130                # Better ignore directories of this form. They are misleading.
1131                ;;
1132              *) searchdir=`cd "$searchdir" && pwd`
1133                 case "$searchdir" in
1134                   */lib64 ) acl_libdirstem=lib64 ;;
1135                 esac ;;
1136            esac
1137          fi
1138        done
1139        IFS="$acl_save_IFS"
1140      fi
1141      ;;
1142  esac
1143  test -n "$acl_libdirstem2" || acl_libdirstem2="$acl_libdirstem"
1144])
1145
1146dnl pkg.m4 - Macros to locate and utilise pkg-config.   -*- Autoconf -*-
1147dnl serial 11 (pkg-config-0.29)
1148dnl
1149dnl Copyright © 2004 Scott James Remnant <scott@netsplit.com>.
1150dnl Copyright © 2012-2015 Dan Nicholson <dbn.lists@gmail.com>
1151dnl
1152dnl This program is free software; you can redistribute it and/or modify
1153dnl it under the terms of the GNU General Public License as published by
1154dnl the Free Software Foundation; either version 2 of the License, or
1155dnl (at your option) any later version.
1156dnl
1157dnl This program is distributed in the hope that it will be useful, but
1158dnl WITHOUT ANY WARRANTY; without even the implied warranty of
1159dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
1160dnl General Public License for more details.
1161dnl
1162dnl You should have received a copy of the GNU General Public License
1163dnl along with this program; if not, write to the Free Software
1164dnl Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
1165dnl 02111-1307, USA.
1166dnl
1167dnl As a special exception to the GNU General Public License, if you
1168dnl distribute this file as part of a program that contains a
1169dnl configuration script generated by Autoconf, you may include it under
1170dnl the same distribution terms that you use for the rest of that
1171dnl program.
1172
1173dnl PKG_PREREQ(MIN-VERSION)
1174dnl -----------------------
1175dnl Since: 0.29
1176dnl
1177dnl Verify that the version of the pkg-config macros are at least
1178dnl MIN-VERSION. Unlike PKG_PROG_PKG_CONFIG, which checks the user's
1179dnl installed version of pkg-config, this checks the developer's version
1180dnl of pkg.m4 when generating configure.
1181dnl
1182dnl To ensure that this macro is defined, also add:
1183dnl m4_ifndef([PKG_PREREQ],
1184dnl     [m4_fatal([must install pkg-config 0.29 or later before running autoconf/autogen])])
1185dnl
1186dnl See the "Since" comment for each macro you use to see what version
1187dnl of the macros you require.
1188m4_defun([PKG_PREREQ],
1189[m4_define([PKG_MACROS_VERSION], [0.29])
1190m4_if(m4_version_compare(PKG_MACROS_VERSION, [$1]), -1,
1191    [m4_fatal([pkg.m4 version $1 or higher is required but ]PKG_MACROS_VERSION[ found])])
1192])dnl PKG_PREREQ
1193
1194dnl PKG_PROG_PKG_CONFIG([MIN-VERSION])
1195dnl ----------------------------------
1196dnl Since: 0.16
1197dnl
1198dnl Search for the pkg-config tool and set the PKG_CONFIG variable to
1199dnl first found in the path. Checks that the version of pkg-config found
1200dnl is at least MIN-VERSION. If MIN-VERSION is not specified, 0.9.0 is
1201dnl used since that's the first version where most current features of
1202dnl pkg-config existed.
1203AC_DEFUN([PKG_PROG_PKG_CONFIG],
1204[m4_pattern_forbid([^_?PKG_[A-Z_]+$])
1205m4_pattern_allow([^PKG_CONFIG(_(PATH|LIBDIR|SYSROOT_DIR|ALLOW_SYSTEM_(CFLAGS|LIBS)))?$])
1206m4_pattern_allow([^PKG_CONFIG_(DISABLE_UNINSTALLED|TOP_BUILD_DIR|DEBUG_SPEW)$])
1207AC_ARG_VAR([PKG_CONFIG], [path to pkg-config utility])
1208AC_ARG_VAR([PKG_CONFIG_PATH], [directories to add to pkg-config's search path])
1209AC_ARG_VAR([PKG_CONFIG_LIBDIR], [path overriding pkg-config's built-in search path])
1210
1211if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then
1212	AC_PATH_TOOL([PKG_CONFIG], [pkg-config])
1213fi
1214if test -n "$PKG_CONFIG"; then
1215	_pkg_min_version=m4_default([$1], [0.9.0])
1216	AC_MSG_CHECKING([pkg-config is at least version $_pkg_min_version])
1217	if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then
1218		AC_MSG_RESULT([yes])
1219	else
1220		AC_MSG_RESULT([no])
1221		PKG_CONFIG=""
1222	fi
1223fi[]dnl
1224])dnl PKG_PROG_PKG_CONFIG
1225
1226dnl PKG_CHECK_EXISTS(MODULES, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
1227dnl -------------------------------------------------------------------
1228dnl Since: 0.18
1229dnl
1230dnl Check to see whether a particular set of modules exists. Similar to
1231dnl PKG_CHECK_MODULES(), but does not set variables or print errors.
1232dnl
1233dnl Please remember that m4 expands AC_REQUIRE([PKG_PROG_PKG_CONFIG])
1234dnl only at the first occurence in configure.ac, so if the first place
1235dnl it's called might be skipped (such as if it is within an "if", you
1236dnl have to call PKG_CHECK_EXISTS manually
1237AC_DEFUN([PKG_CHECK_EXISTS],
1238[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
1239if test -n "$PKG_CONFIG" && \
1240    AC_RUN_LOG([$PKG_CONFIG --exists --print-errors "$1"]); then
1241  m4_default([$2], [:])
1242m4_ifvaln([$3], [else
1243  $3])dnl
1244fi])
1245
1246dnl _PKG_CONFIG([VARIABLE], [COMMAND], [MODULES])
1247dnl ---------------------------------------------
1248dnl Internal wrapper calling pkg-config via PKG_CONFIG and setting
1249dnl pkg_failed based on the result.
1250m4_define([_PKG_CONFIG],
1251[if test -n "$$1"; then
1252    pkg_cv_[]$1="$$1"
1253 elif test -n "$PKG_CONFIG"; then
1254    PKG_CHECK_EXISTS([$3],
1255                     [pkg_cv_[]$1=`$PKG_CONFIG --[]$2 "$3" 2>/dev/null`
1256		      test "x$?" != "x0" && pkg_failed=yes ],
1257		     [pkg_failed=yes])
1258 else
1259    pkg_failed=untried
1260fi[]dnl
1261])dnl _PKG_CONFIG
1262
1263dnl _PKG_SHORT_ERRORS_SUPPORTED
1264dnl ---------------------------
1265dnl Internal check to see if pkg-config supports short errors.
1266AC_DEFUN([_PKG_SHORT_ERRORS_SUPPORTED],
1267[AC_REQUIRE([PKG_PROG_PKG_CONFIG])
1268if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
1269        _pkg_short_errors_supported=yes
1270else
1271        _pkg_short_errors_supported=no
1272fi[]dnl
1273])dnl _PKG_SHORT_ERRORS_SUPPORTED
1274
1275
1276dnl PKG_CHECK_MODULES(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND],
1277dnl   [ACTION-IF-NOT-FOUND])
1278dnl --------------------------------------------------------------
1279dnl Since: 0.4.0
1280dnl
1281dnl Note that if there is a possibility the first call to
1282dnl PKG_CHECK_MODULES might not happen, you should be sure to include an
1283dnl explicit call to PKG_PROG_PKG_CONFIG in your configure.ac
1284AC_DEFUN([PKG_CHECK_MODULES],
1285[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
1286AC_ARG_VAR([$1][_CFLAGS], [C compiler flags for $1, overriding pkg-config])dnl
1287AC_ARG_VAR([$1][_LIBS], [linker flags for $1, overriding pkg-config])dnl
1288
1289pkg_failed=no
1290AC_MSG_CHECKING([for $1])
1291
1292_PKG_CONFIG([$1][_CFLAGS], [cflags], [$2])
1293_PKG_CONFIG([$1][_LIBS], [libs], [$2])
1294
1295m4_define([_PKG_TEXT], [Alternatively, you may set the environment variables $1[]_CFLAGS
1296and $1[]_LIBS to avoid the need to call pkg-config.
1297See the pkg-config man page for more details.])
1298
1299if test $pkg_failed = yes; then
1300   	AC_MSG_RESULT([no])
1301        _PKG_SHORT_ERRORS_SUPPORTED
1302        if test $_pkg_short_errors_supported = yes; then
1303	        $1[]_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "$2" 2>&1`
1304        else
1305	        $1[]_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "$2" 2>&1`
1306        fi
1307	# Put the nasty error message in config.log where it belongs
1308	echo "$$1[]_PKG_ERRORS" >&AS_MESSAGE_LOG_FD
1309
1310	m4_default([$4], [AC_MSG_ERROR(
1311[Package requirements ($2) were not met:
1312
1313$$1_PKG_ERRORS
1314
1315Consider adjusting the PKG_CONFIG_PATH environment variable if you
1316installed software in a non-standard prefix.
1317
1318_PKG_TEXT])[]dnl
1319        ])
1320elif test $pkg_failed = untried; then
1321     	AC_MSG_RESULT([no])
1322	m4_default([$4], [AC_MSG_FAILURE(
1323[The pkg-config script could not be found or is too old.  Make sure it
1324is in your PATH or set the PKG_CONFIG environment variable to the full
1325path to pkg-config.
1326
1327_PKG_TEXT
1328
1329To get pkg-config, see <http://pkg-config.freedesktop.org/>.])[]dnl
1330        ])
1331else
1332	$1[]_CFLAGS=$pkg_cv_[]$1[]_CFLAGS
1333	$1[]_LIBS=$pkg_cv_[]$1[]_LIBS
1334        AC_MSG_RESULT([yes])
1335	$3
1336fi[]dnl
1337])dnl PKG_CHECK_MODULES
1338
1339
1340dnl PKG_CHECK_MODULES_STATIC(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND],
1341dnl   [ACTION-IF-NOT-FOUND])
1342dnl ---------------------------------------------------------------------
1343dnl Since: 0.29
1344dnl
1345dnl Checks for existence of MODULES and gathers its build flags with
1346dnl static libraries enabled. Sets VARIABLE-PREFIX_CFLAGS from --cflags
1347dnl and VARIABLE-PREFIX_LIBS from --libs.
1348dnl
1349dnl Note that if there is a possibility the first call to
1350dnl PKG_CHECK_MODULES_STATIC might not happen, you should be sure to
1351dnl include an explicit call to PKG_PROG_PKG_CONFIG in your
1352dnl configure.ac.
1353AC_DEFUN([PKG_CHECK_MODULES_STATIC],
1354[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
1355_save_PKG_CONFIG=$PKG_CONFIG
1356PKG_CONFIG="$PKG_CONFIG --static"
1357PKG_CHECK_MODULES($@)
1358PKG_CONFIG=$_save_PKG_CONFIG[]dnl
1359])dnl PKG_CHECK_MODULES_STATIC
1360
1361
1362dnl PKG_INSTALLDIR([DIRECTORY])
1363dnl -------------------------
1364dnl Since: 0.27
1365dnl
1366dnl Substitutes the variable pkgconfigdir as the location where a module
1367dnl should install pkg-config .pc files. By default the directory is
1368dnl $libdir/pkgconfig, but the default can be changed by passing
1369dnl DIRECTORY. The user can override through the --with-pkgconfigdir
1370dnl parameter.
1371AC_DEFUN([PKG_INSTALLDIR],
1372[m4_pushdef([pkg_default], [m4_default([$1], ['${libdir}/pkgconfig'])])
1373m4_pushdef([pkg_description],
1374    [pkg-config installation directory @<:@]pkg_default[@:>@])
1375AC_ARG_WITH([pkgconfigdir],
1376    [AS_HELP_STRING([--with-pkgconfigdir], pkg_description)],,
1377    [with_pkgconfigdir=]pkg_default)
1378AC_SUBST([pkgconfigdir], [$with_pkgconfigdir])
1379m4_popdef([pkg_default])
1380m4_popdef([pkg_description])
1381])dnl PKG_INSTALLDIR
1382
1383
1384dnl PKG_NOARCH_INSTALLDIR([DIRECTORY])
1385dnl --------------------------------
1386dnl Since: 0.27
1387dnl
1388dnl Substitutes the variable noarch_pkgconfigdir as the location where a
1389dnl module should install arch-independent pkg-config .pc files. By
1390dnl default the directory is $datadir/pkgconfig, but the default can be
1391dnl changed by passing DIRECTORY. The user can override through the
1392dnl --with-noarch-pkgconfigdir parameter.
1393AC_DEFUN([PKG_NOARCH_INSTALLDIR],
1394[m4_pushdef([pkg_default], [m4_default([$1], ['${datadir}/pkgconfig'])])
1395m4_pushdef([pkg_description],
1396    [pkg-config arch-independent installation directory @<:@]pkg_default[@:>@])
1397AC_ARG_WITH([noarch-pkgconfigdir],
1398    [AS_HELP_STRING([--with-noarch-pkgconfigdir], pkg_description)],,
1399    [with_noarch_pkgconfigdir=]pkg_default)
1400AC_SUBST([noarch_pkgconfigdir], [$with_noarch_pkgconfigdir])
1401m4_popdef([pkg_default])
1402m4_popdef([pkg_description])
1403])dnl PKG_NOARCH_INSTALLDIR
1404
1405
1406dnl PKG_CHECK_VAR(VARIABLE, MODULE, CONFIG-VARIABLE,
1407dnl [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
1408dnl -------------------------------------------
1409dnl Since: 0.28
1410dnl
1411dnl Retrieves the value of the pkg-config variable for the given module.
1412AC_DEFUN([PKG_CHECK_VAR],
1413[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
1414AC_ARG_VAR([$1], [value of $3 for $2, overriding pkg-config])dnl
1415
1416_PKG_CONFIG([$1], [variable="][$3]["], [$2])
1417AS_VAR_COPY([$1], [pkg_cv_][$1])
1418
1419AS_VAR_IF([$1], [""], [$5], [$4])dnl
1420])dnl PKG_CHECK_VAR
1421
1422# Copyright (C) 2002-2018 Free Software Foundation, Inc.
1423#
1424# This file is free software; the Free Software Foundation
1425# gives unlimited permission to copy and/or distribute it,
1426# with or without modifications, as long as this notice is preserved.
1427
1428# AM_AUTOMAKE_VERSION(VERSION)
1429# ----------------------------
1430# Automake X.Y traces this macro to ensure aclocal.m4 has been
1431# generated from the m4 files accompanying Automake X.Y.
1432# (This private macro should not be called outside this file.)
1433AC_DEFUN([AM_AUTOMAKE_VERSION],
1434[am__api_version='1.16'
1435dnl Some users find AM_AUTOMAKE_VERSION and mistake it for a way to
1436dnl require some minimum version.  Point them to the right macro.
1437m4_if([$1], [1.16.1], [],
1438      [AC_FATAL([Do not call $0, use AM_INIT_AUTOMAKE([$1]).])])dnl
1439])
1440
1441# _AM_AUTOCONF_VERSION(VERSION)
1442# -----------------------------
1443# aclocal traces this macro to find the Autoconf version.
1444# This is a private macro too.  Using m4_define simplifies
1445# the logic in aclocal, which can simply ignore this definition.
1446m4_define([_AM_AUTOCONF_VERSION], [])
1447
1448# AM_SET_CURRENT_AUTOMAKE_VERSION
1449# -------------------------------
1450# Call AM_AUTOMAKE_VERSION and AM_AUTOMAKE_VERSION so they can be traced.
1451# This function is AC_REQUIREd by AM_INIT_AUTOMAKE.
1452AC_DEFUN([AM_SET_CURRENT_AUTOMAKE_VERSION],
1453[AM_AUTOMAKE_VERSION([1.16.1])dnl
1454m4_ifndef([AC_AUTOCONF_VERSION],
1455  [m4_copy([m4_PACKAGE_VERSION], [AC_AUTOCONF_VERSION])])dnl
1456_AM_AUTOCONF_VERSION(m4_defn([AC_AUTOCONF_VERSION]))])
1457
1458# Copyright (C) 2011-2018 Free Software Foundation, Inc.
1459#
1460# This file is free software; the Free Software Foundation
1461# gives unlimited permission to copy and/or distribute it,
1462# with or without modifications, as long as this notice is preserved.
1463
1464# AM_PROG_AR([ACT-IF-FAIL])
1465# -------------------------
1466# Try to determine the archiver interface, and trigger the ar-lib wrapper
1467# if it is needed.  If the detection of archiver interface fails, run
1468# ACT-IF-FAIL (default is to abort configure with a proper error message).
1469AC_DEFUN([AM_PROG_AR],
1470[AC_BEFORE([$0], [LT_INIT])dnl
1471AC_BEFORE([$0], [AC_PROG_LIBTOOL])dnl
1472AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
1473AC_REQUIRE_AUX_FILE([ar-lib])dnl
1474AC_CHECK_TOOLS([AR], [ar lib "link -lib"], [false])
1475: ${AR=ar}
1476
1477AC_CACHE_CHECK([the archiver ($AR) interface], [am_cv_ar_interface],
1478  [AC_LANG_PUSH([C])
1479   am_cv_ar_interface=ar
1480   AC_COMPILE_IFELSE([AC_LANG_SOURCE([[int some_variable = 0;]])],
1481     [am_ar_try='$AR cru libconftest.a conftest.$ac_objext >&AS_MESSAGE_LOG_FD'
1482      AC_TRY_EVAL([am_ar_try])
1483      if test "$ac_status" -eq 0; then
1484        am_cv_ar_interface=ar
1485      else
1486        am_ar_try='$AR -NOLOGO -OUT:conftest.lib conftest.$ac_objext >&AS_MESSAGE_LOG_FD'
1487        AC_TRY_EVAL([am_ar_try])
1488        if test "$ac_status" -eq 0; then
1489          am_cv_ar_interface=lib
1490        else
1491          am_cv_ar_interface=unknown
1492        fi
1493      fi
1494      rm -f conftest.lib libconftest.a
1495     ])
1496   AC_LANG_POP([C])])
1497
1498case $am_cv_ar_interface in
1499ar)
1500  ;;
1501lib)
1502  # Microsoft lib, so override with the ar-lib wrapper script.
1503  # FIXME: It is wrong to rewrite AR.
1504  # But if we don't then we get into trouble of one sort or another.
1505  # A longer-term fix would be to have automake use am__AR in this case,
1506  # and then we could set am__AR="$am_aux_dir/ar-lib \$(AR)" or something
1507  # similar.
1508  AR="$am_aux_dir/ar-lib $AR"
1509  ;;
1510unknown)
1511  m4_default([$1],
1512             [AC_MSG_ERROR([could not determine $AR interface])])
1513  ;;
1514esac
1515AC_SUBST([AR])dnl
1516])
1517
1518# AM_AUX_DIR_EXPAND                                         -*- Autoconf -*-
1519
1520# Copyright (C) 2001-2018 Free Software Foundation, Inc.
1521#
1522# This file is free software; the Free Software Foundation
1523# gives unlimited permission to copy and/or distribute it,
1524# with or without modifications, as long as this notice is preserved.
1525
1526# For projects using AC_CONFIG_AUX_DIR([foo]), Autoconf sets
1527# $ac_aux_dir to '$srcdir/foo'.  In other projects, it is set to
1528# '$srcdir', '$srcdir/..', or '$srcdir/../..'.
1529#
1530# Of course, Automake must honor this variable whenever it calls a
1531# tool from the auxiliary directory.  The problem is that $srcdir (and
1532# therefore $ac_aux_dir as well) can be either absolute or relative,
1533# depending on how configure is run.  This is pretty annoying, since
1534# it makes $ac_aux_dir quite unusable in subdirectories: in the top
1535# source directory, any form will work fine, but in subdirectories a
1536# relative path needs to be adjusted first.
1537#
1538# $ac_aux_dir/missing
1539#    fails when called from a subdirectory if $ac_aux_dir is relative
1540# $top_srcdir/$ac_aux_dir/missing
1541#    fails if $ac_aux_dir is absolute,
1542#    fails when called from a subdirectory in a VPATH build with
1543#          a relative $ac_aux_dir
1544#
1545# The reason of the latter failure is that $top_srcdir and $ac_aux_dir
1546# are both prefixed by $srcdir.  In an in-source build this is usually
1547# harmless because $srcdir is '.', but things will broke when you
1548# start a VPATH build or use an absolute $srcdir.
1549#
1550# So we could use something similar to $top_srcdir/$ac_aux_dir/missing,
1551# iff we strip the leading $srcdir from $ac_aux_dir.  That would be:
1552#   am_aux_dir='\$(top_srcdir)/'`expr "$ac_aux_dir" : "$srcdir//*\(.*\)"`
1553# and then we would define $MISSING as
1554#   MISSING="\${SHELL} $am_aux_dir/missing"
1555# This will work as long as MISSING is not called from configure, because
1556# unfortunately $(top_srcdir) has no meaning in configure.
1557# However there are other variables, like CC, which are often used in
1558# configure, and could therefore not use this "fixed" $ac_aux_dir.
1559#
1560# Another solution, used here, is to always expand $ac_aux_dir to an
1561# absolute PATH.  The drawback is that using absolute paths prevent a
1562# configured tree to be moved without reconfiguration.
1563
1564AC_DEFUN([AM_AUX_DIR_EXPAND],
1565[AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT])dnl
1566# Expand $ac_aux_dir to an absolute path.
1567am_aux_dir=`cd "$ac_aux_dir" && pwd`
1568])
1569
1570# AM_CONDITIONAL                                            -*- Autoconf -*-
1571
1572# Copyright (C) 1997-2018 Free Software Foundation, Inc.
1573#
1574# This file is free software; the Free Software Foundation
1575# gives unlimited permission to copy and/or distribute it,
1576# with or without modifications, as long as this notice is preserved.
1577
1578# AM_CONDITIONAL(NAME, SHELL-CONDITION)
1579# -------------------------------------
1580# Define a conditional.
1581AC_DEFUN([AM_CONDITIONAL],
1582[AC_PREREQ([2.52])dnl
1583 m4_if([$1], [TRUE],  [AC_FATAL([$0: invalid condition: $1])],
1584       [$1], [FALSE], [AC_FATAL([$0: invalid condition: $1])])dnl
1585AC_SUBST([$1_TRUE])dnl
1586AC_SUBST([$1_FALSE])dnl
1587_AM_SUBST_NOTMAKE([$1_TRUE])dnl
1588_AM_SUBST_NOTMAKE([$1_FALSE])dnl
1589m4_define([_AM_COND_VALUE_$1], [$2])dnl
1590if $2; then
1591  $1_TRUE=
1592  $1_FALSE='#'
1593else
1594  $1_TRUE='#'
1595  $1_FALSE=
1596fi
1597AC_CONFIG_COMMANDS_PRE(
1598[if test -z "${$1_TRUE}" && test -z "${$1_FALSE}"; then
1599  AC_MSG_ERROR([[conditional "$1" was never defined.
1600Usually this means the macro was only invoked conditionally.]])
1601fi])])
1602
1603# Copyright (C) 1999-2018 Free Software Foundation, Inc.
1604#
1605# This file is free software; the Free Software Foundation
1606# gives unlimited permission to copy and/or distribute it,
1607# with or without modifications, as long as this notice is preserved.
1608
1609
1610# There are a few dirty hacks below to avoid letting 'AC_PROG_CC' be
1611# written in clear, in which case automake, when reading aclocal.m4,
1612# will think it sees a *use*, and therefore will trigger all it's
1613# C support machinery.  Also note that it means that autoscan, seeing
1614# CC etc. in the Makefile, will ask for an AC_PROG_CC use...
1615
1616
1617# _AM_DEPENDENCIES(NAME)
1618# ----------------------
1619# See how the compiler implements dependency checking.
1620# NAME is "CC", "CXX", "OBJC", "OBJCXX", "UPC", or "GJC".
1621# We try a few techniques and use that to set a single cache variable.
1622#
1623# We don't AC_REQUIRE the corresponding AC_PROG_CC since the latter was
1624# modified to invoke _AM_DEPENDENCIES(CC); we would have a circular
1625# dependency, and given that the user is not expected to run this macro,
1626# just rely on AC_PROG_CC.
1627AC_DEFUN([_AM_DEPENDENCIES],
1628[AC_REQUIRE([AM_SET_DEPDIR])dnl
1629AC_REQUIRE([AM_OUTPUT_DEPENDENCY_COMMANDS])dnl
1630AC_REQUIRE([AM_MAKE_INCLUDE])dnl
1631AC_REQUIRE([AM_DEP_TRACK])dnl
1632
1633m4_if([$1], [CC],   [depcc="$CC"   am_compiler_list=],
1634      [$1], [CXX],  [depcc="$CXX"  am_compiler_list=],
1635      [$1], [OBJC], [depcc="$OBJC" am_compiler_list='gcc3 gcc'],
1636      [$1], [OBJCXX], [depcc="$OBJCXX" am_compiler_list='gcc3 gcc'],
1637      [$1], [UPC],  [depcc="$UPC"  am_compiler_list=],
1638      [$1], [GCJ],  [depcc="$GCJ"  am_compiler_list='gcc3 gcc'],
1639                    [depcc="$$1"   am_compiler_list=])
1640
1641AC_CACHE_CHECK([dependency style of $depcc],
1642               [am_cv_$1_dependencies_compiler_type],
1643[if test -z "$AMDEP_TRUE" && test -f "$am_depcomp"; then
1644  # We make a subdir and do the tests there.  Otherwise we can end up
1645  # making bogus files that we don't know about and never remove.  For
1646  # instance it was reported that on HP-UX the gcc test will end up
1647  # making a dummy file named 'D' -- because '-MD' means "put the output
1648  # in D".
1649  rm -rf conftest.dir
1650  mkdir conftest.dir
1651  # Copy depcomp to subdir because otherwise we won't find it if we're
1652  # using a relative directory.
1653  cp "$am_depcomp" conftest.dir
1654  cd conftest.dir
1655  # We will build objects and dependencies in a subdirectory because
1656  # it helps to detect inapplicable dependency modes.  For instance
1657  # both Tru64's cc and ICC support -MD to output dependencies as a
1658  # side effect of compilation, but ICC will put the dependencies in
1659  # the current directory while Tru64 will put them in the object
1660  # directory.
1661  mkdir sub
1662
1663  am_cv_$1_dependencies_compiler_type=none
1664  if test "$am_compiler_list" = ""; then
1665     am_compiler_list=`sed -n ['s/^#*\([a-zA-Z0-9]*\))$/\1/p'] < ./depcomp`
1666  fi
1667  am__universal=false
1668  m4_case([$1], [CC],
1669    [case " $depcc " in #(
1670     *\ -arch\ *\ -arch\ *) am__universal=true ;;
1671     esac],
1672    [CXX],
1673    [case " $depcc " in #(
1674     *\ -arch\ *\ -arch\ *) am__universal=true ;;
1675     esac])
1676
1677  for depmode in $am_compiler_list; do
1678    # Setup a source with many dependencies, because some compilers
1679    # like to wrap large dependency lists on column 80 (with \), and
1680    # we should not choose a depcomp mode which is confused by this.
1681    #
1682    # We need to recreate these files for each test, as the compiler may
1683    # overwrite some of them when testing with obscure command lines.
1684    # This happens at least with the AIX C compiler.
1685    : > sub/conftest.c
1686    for i in 1 2 3 4 5 6; do
1687      echo '#include "conftst'$i'.h"' >> sub/conftest.c
1688      # Using ": > sub/conftst$i.h" creates only sub/conftst1.h with
1689      # Solaris 10 /bin/sh.
1690      echo '/* dummy */' > sub/conftst$i.h
1691    done
1692    echo "${am__include} ${am__quote}sub/conftest.Po${am__quote}" > confmf
1693
1694    # We check with '-c' and '-o' for the sake of the "dashmstdout"
1695    # mode.  It turns out that the SunPro C++ compiler does not properly
1696    # handle '-M -o', and we need to detect this.  Also, some Intel
1697    # versions had trouble with output in subdirs.
1698    am__obj=sub/conftest.${OBJEXT-o}
1699    am__minus_obj="-o $am__obj"
1700    case $depmode in
1701    gcc)
1702      # This depmode causes a compiler race in universal mode.
1703      test "$am__universal" = false || continue
1704      ;;
1705    nosideeffect)
1706      # After this tag, mechanisms are not by side-effect, so they'll
1707      # only be used when explicitly requested.
1708      if test "x$enable_dependency_tracking" = xyes; then
1709	continue
1710      else
1711	break
1712      fi
1713      ;;
1714    msvc7 | msvc7msys | msvisualcpp | msvcmsys)
1715      # This compiler won't grok '-c -o', but also, the minuso test has
1716      # not run yet.  These depmodes are late enough in the game, and
1717      # so weak that their functioning should not be impacted.
1718      am__obj=conftest.${OBJEXT-o}
1719      am__minus_obj=
1720      ;;
1721    none) break ;;
1722    esac
1723    if depmode=$depmode \
1724       source=sub/conftest.c object=$am__obj \
1725       depfile=sub/conftest.Po tmpdepfile=sub/conftest.TPo \
1726       $SHELL ./depcomp $depcc -c $am__minus_obj sub/conftest.c \
1727         >/dev/null 2>conftest.err &&
1728       grep sub/conftst1.h sub/conftest.Po > /dev/null 2>&1 &&
1729       grep sub/conftst6.h sub/conftest.Po > /dev/null 2>&1 &&
1730       grep $am__obj sub/conftest.Po > /dev/null 2>&1 &&
1731       ${MAKE-make} -s -f confmf > /dev/null 2>&1; then
1732      # icc doesn't choke on unknown options, it will just issue warnings
1733      # or remarks (even with -Werror).  So we grep stderr for any message
1734      # that says an option was ignored or not supported.
1735      # When given -MP, icc 7.0 and 7.1 complain thusly:
1736      #   icc: Command line warning: ignoring option '-M'; no argument required
1737      # The diagnosis changed in icc 8.0:
1738      #   icc: Command line remark: option '-MP' not supported
1739      if (grep 'ignoring option' conftest.err ||
1740          grep 'not supported' conftest.err) >/dev/null 2>&1; then :; else
1741        am_cv_$1_dependencies_compiler_type=$depmode
1742        break
1743      fi
1744    fi
1745  done
1746
1747  cd ..
1748  rm -rf conftest.dir
1749else
1750  am_cv_$1_dependencies_compiler_type=none
1751fi
1752])
1753AC_SUBST([$1DEPMODE], [depmode=$am_cv_$1_dependencies_compiler_type])
1754AM_CONDITIONAL([am__fastdep$1], [
1755  test "x$enable_dependency_tracking" != xno \
1756  && test "$am_cv_$1_dependencies_compiler_type" = gcc3])
1757])
1758
1759
1760# AM_SET_DEPDIR
1761# -------------
1762# Choose a directory name for dependency files.
1763# This macro is AC_REQUIREd in _AM_DEPENDENCIES.
1764AC_DEFUN([AM_SET_DEPDIR],
1765[AC_REQUIRE([AM_SET_LEADING_DOT])dnl
1766AC_SUBST([DEPDIR], ["${am__leading_dot}deps"])dnl
1767])
1768
1769
1770# AM_DEP_TRACK
1771# ------------
1772AC_DEFUN([AM_DEP_TRACK],
1773[AC_ARG_ENABLE([dependency-tracking], [dnl
1774AS_HELP_STRING(
1775  [--enable-dependency-tracking],
1776  [do not reject slow dependency extractors])
1777AS_HELP_STRING(
1778  [--disable-dependency-tracking],
1779  [speeds up one-time build])])
1780if test "x$enable_dependency_tracking" != xno; then
1781  am_depcomp="$ac_aux_dir/depcomp"
1782  AMDEPBACKSLASH='\'
1783  am__nodep='_no'
1784fi
1785AM_CONDITIONAL([AMDEP], [test "x$enable_dependency_tracking" != xno])
1786AC_SUBST([AMDEPBACKSLASH])dnl
1787_AM_SUBST_NOTMAKE([AMDEPBACKSLASH])dnl
1788AC_SUBST([am__nodep])dnl
1789_AM_SUBST_NOTMAKE([am__nodep])dnl
1790])
1791
1792# Generate code to set up dependency tracking.              -*- Autoconf -*-
1793
1794# Copyright (C) 1999-2018 Free Software Foundation, Inc.
1795#
1796# This file is free software; the Free Software Foundation
1797# gives unlimited permission to copy and/or distribute it,
1798# with or without modifications, as long as this notice is preserved.
1799
1800# _AM_OUTPUT_DEPENDENCY_COMMANDS
1801# ------------------------------
1802AC_DEFUN([_AM_OUTPUT_DEPENDENCY_COMMANDS],
1803[{
1804  # Older Autoconf quotes --file arguments for eval, but not when files
1805  # are listed without --file.  Let's play safe and only enable the eval
1806  # if we detect the quoting.
1807  # TODO: see whether this extra hack can be removed once we start
1808  # requiring Autoconf 2.70 or later.
1809  AS_CASE([$CONFIG_FILES],
1810          [*\'*], [eval set x "$CONFIG_FILES"],
1811          [*], [set x $CONFIG_FILES])
1812  shift
1813  # Used to flag and report bootstrapping failures.
1814  am_rc=0
1815  for am_mf
1816  do
1817    # Strip MF so we end up with the name of the file.
1818    am_mf=`AS_ECHO(["$am_mf"]) | sed -e 's/:.*$//'`
1819    # Check whether this is an Automake generated Makefile which includes
1820    # dependency-tracking related rules and includes.
1821    # Grep'ing the whole file directly is not great: AIX grep has a line
1822    # limit of 2048, but all sed's we know have understand at least 4000.
1823    sed -n 's,^am--depfiles:.*,X,p' "$am_mf" | grep X >/dev/null 2>&1 \
1824      || continue
1825    am_dirpart=`AS_DIRNAME(["$am_mf"])`
1826    am_filepart=`AS_BASENAME(["$am_mf"])`
1827    AM_RUN_LOG([cd "$am_dirpart" \
1828      && sed -e '/# am--include-marker/d' "$am_filepart" \
1829        | $MAKE -f - am--depfiles]) || am_rc=$?
1830  done
1831  if test $am_rc -ne 0; then
1832    AC_MSG_FAILURE([Something went wrong bootstrapping makefile fragments
1833    for automatic dependency tracking.  Try re-running configure with the
1834    '--disable-dependency-tracking' option to at least be able to build
1835    the package (albeit without support for automatic dependency tracking).])
1836  fi
1837  AS_UNSET([am_dirpart])
1838  AS_UNSET([am_filepart])
1839  AS_UNSET([am_mf])
1840  AS_UNSET([am_rc])
1841  rm -f conftest-deps.mk
1842}
1843])# _AM_OUTPUT_DEPENDENCY_COMMANDS
1844
1845
1846# AM_OUTPUT_DEPENDENCY_COMMANDS
1847# -----------------------------
1848# This macro should only be invoked once -- use via AC_REQUIRE.
1849#
1850# This code is only required when automatic dependency tracking is enabled.
1851# This creates each '.Po' and '.Plo' makefile fragment that we'll need in
1852# order to bootstrap the dependency handling code.
1853AC_DEFUN([AM_OUTPUT_DEPENDENCY_COMMANDS],
1854[AC_CONFIG_COMMANDS([depfiles],
1855     [test x"$AMDEP_TRUE" != x"" || _AM_OUTPUT_DEPENDENCY_COMMANDS],
1856     [AMDEP_TRUE="$AMDEP_TRUE" MAKE="${MAKE-make}"])])
1857
1858# Do all the work for Automake.                             -*- Autoconf -*-
1859
1860# Copyright (C) 1996-2018 Free Software Foundation, Inc.
1861#
1862# This file is free software; the Free Software Foundation
1863# gives unlimited permission to copy and/or distribute it,
1864# with or without modifications, as long as this notice is preserved.
1865
1866# This macro actually does too much.  Some checks are only needed if
1867# your package does certain things.  But this isn't really a big deal.
1868
1869dnl Redefine AC_PROG_CC to automatically invoke _AM_PROG_CC_C_O.
1870m4_define([AC_PROG_CC],
1871m4_defn([AC_PROG_CC])
1872[_AM_PROG_CC_C_O
1873])
1874
1875# AM_INIT_AUTOMAKE(PACKAGE, VERSION, [NO-DEFINE])
1876# AM_INIT_AUTOMAKE([OPTIONS])
1877# -----------------------------------------------
1878# The call with PACKAGE and VERSION arguments is the old style
1879# call (pre autoconf-2.50), which is being phased out.  PACKAGE
1880# and VERSION should now be passed to AC_INIT and removed from
1881# the call to AM_INIT_AUTOMAKE.
1882# We support both call styles for the transition.  After
1883# the next Automake release, Autoconf can make the AC_INIT
1884# arguments mandatory, and then we can depend on a new Autoconf
1885# release and drop the old call support.
1886AC_DEFUN([AM_INIT_AUTOMAKE],
1887[AC_PREREQ([2.65])dnl
1888dnl Autoconf wants to disallow AM_ names.  We explicitly allow
1889dnl the ones we care about.
1890m4_pattern_allow([^AM_[A-Z]+FLAGS$])dnl
1891AC_REQUIRE([AM_SET_CURRENT_AUTOMAKE_VERSION])dnl
1892AC_REQUIRE([AC_PROG_INSTALL])dnl
1893if test "`cd $srcdir && pwd`" != "`pwd`"; then
1894  # Use -I$(srcdir) only when $(srcdir) != ., so that make's output
1895  # is not polluted with repeated "-I."
1896  AC_SUBST([am__isrc], [' -I$(srcdir)'])_AM_SUBST_NOTMAKE([am__isrc])dnl
1897  # test to see if srcdir already configured
1898  if test -f $srcdir/config.status; then
1899    AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
1900  fi
1901fi
1902
1903# test whether we have cygpath
1904if test -z "$CYGPATH_W"; then
1905  if (cygpath --version) >/dev/null 2>/dev/null; then
1906    CYGPATH_W='cygpath -w'
1907  else
1908    CYGPATH_W=echo
1909  fi
1910fi
1911AC_SUBST([CYGPATH_W])
1912
1913# Define the identity of the package.
1914dnl Distinguish between old-style and new-style calls.
1915m4_ifval([$2],
1916[AC_DIAGNOSE([obsolete],
1917             [$0: two- and three-arguments forms are deprecated.])
1918m4_ifval([$3], [_AM_SET_OPTION([no-define])])dnl
1919 AC_SUBST([PACKAGE], [$1])dnl
1920 AC_SUBST([VERSION], [$2])],
1921[_AM_SET_OPTIONS([$1])dnl
1922dnl Diagnose old-style AC_INIT with new-style AM_AUTOMAKE_INIT.
1923m4_if(
1924  m4_ifdef([AC_PACKAGE_NAME], [ok]):m4_ifdef([AC_PACKAGE_VERSION], [ok]),
1925  [ok:ok],,
1926  [m4_fatal([AC_INIT should be called with package and version arguments])])dnl
1927 AC_SUBST([PACKAGE], ['AC_PACKAGE_TARNAME'])dnl
1928 AC_SUBST([VERSION], ['AC_PACKAGE_VERSION'])])dnl
1929
1930_AM_IF_OPTION([no-define],,
1931[AC_DEFINE_UNQUOTED([PACKAGE], ["$PACKAGE"], [Name of package])
1932 AC_DEFINE_UNQUOTED([VERSION], ["$VERSION"], [Version number of package])])dnl
1933
1934# Some tools Automake needs.
1935AC_REQUIRE([AM_SANITY_CHECK])dnl
1936AC_REQUIRE([AC_ARG_PROGRAM])dnl
1937AM_MISSING_PROG([ACLOCAL], [aclocal-${am__api_version}])
1938AM_MISSING_PROG([AUTOCONF], [autoconf])
1939AM_MISSING_PROG([AUTOMAKE], [automake-${am__api_version}])
1940AM_MISSING_PROG([AUTOHEADER], [autoheader])
1941AM_MISSING_PROG([MAKEINFO], [makeinfo])
1942AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
1943AC_REQUIRE([AM_PROG_INSTALL_STRIP])dnl
1944AC_REQUIRE([AC_PROG_MKDIR_P])dnl
1945# For better backward compatibility.  To be removed once Automake 1.9.x
1946# dies out for good.  For more background, see:
1947# <https://lists.gnu.org/archive/html/automake/2012-07/msg00001.html>
1948# <https://lists.gnu.org/archive/html/automake/2012-07/msg00014.html>
1949AC_SUBST([mkdir_p], ['$(MKDIR_P)'])
1950# We need awk for the "check" target (and possibly the TAP driver).  The
1951# system "awk" is bad on some platforms.
1952AC_REQUIRE([AC_PROG_AWK])dnl
1953AC_REQUIRE([AC_PROG_MAKE_SET])dnl
1954AC_REQUIRE([AM_SET_LEADING_DOT])dnl
1955_AM_IF_OPTION([tar-ustar], [_AM_PROG_TAR([ustar])],
1956	      [_AM_IF_OPTION([tar-pax], [_AM_PROG_TAR([pax])],
1957			     [_AM_PROG_TAR([v7])])])
1958_AM_IF_OPTION([no-dependencies],,
1959[AC_PROVIDE_IFELSE([AC_PROG_CC],
1960		  [_AM_DEPENDENCIES([CC])],
1961		  [m4_define([AC_PROG_CC],
1962			     m4_defn([AC_PROG_CC])[_AM_DEPENDENCIES([CC])])])dnl
1963AC_PROVIDE_IFELSE([AC_PROG_CXX],
1964		  [_AM_DEPENDENCIES([CXX])],
1965		  [m4_define([AC_PROG_CXX],
1966			     m4_defn([AC_PROG_CXX])[_AM_DEPENDENCIES([CXX])])])dnl
1967AC_PROVIDE_IFELSE([AC_PROG_OBJC],
1968		  [_AM_DEPENDENCIES([OBJC])],
1969		  [m4_define([AC_PROG_OBJC],
1970			     m4_defn([AC_PROG_OBJC])[_AM_DEPENDENCIES([OBJC])])])dnl
1971AC_PROVIDE_IFELSE([AC_PROG_OBJCXX],
1972		  [_AM_DEPENDENCIES([OBJCXX])],
1973		  [m4_define([AC_PROG_OBJCXX],
1974			     m4_defn([AC_PROG_OBJCXX])[_AM_DEPENDENCIES([OBJCXX])])])dnl
1975])
1976AC_REQUIRE([AM_SILENT_RULES])dnl
1977dnl The testsuite driver may need to know about EXEEXT, so add the
1978dnl 'am__EXEEXT' conditional if _AM_COMPILER_EXEEXT was seen.  This
1979dnl macro is hooked onto _AC_COMPILER_EXEEXT early, see below.
1980AC_CONFIG_COMMANDS_PRE(dnl
1981[m4_provide_if([_AM_COMPILER_EXEEXT],
1982  [AM_CONDITIONAL([am__EXEEXT], [test -n "$EXEEXT"])])])dnl
1983
1984# POSIX will say in a future version that running "rm -f" with no argument
1985# is OK; and we want to be able to make that assumption in our Makefile
1986# recipes.  So use an aggressive probe to check that the usage we want is
1987# actually supported "in the wild" to an acceptable degree.
1988# See automake bug#10828.
1989# To make any issue more visible, cause the running configure to be aborted
1990# by default if the 'rm' program in use doesn't match our expectations; the
1991# user can still override this though.
1992if rm -f && rm -fr && rm -rf; then : OK; else
1993  cat >&2 <<'END'
1994Oops!
1995
1996Your 'rm' program seems unable to run without file operands specified
1997on the command line, even when the '-f' option is present.  This is contrary
1998to the behaviour of most rm programs out there, and not conforming with
1999the upcoming POSIX standard: <http://austingroupbugs.net/view.php?id=542>
2000
2001Please tell bug-automake@gnu.org about your system, including the value
2002of your $PATH and any error possibly output before this message.  This
2003can help us improve future automake versions.
2004
2005END
2006  if test x"$ACCEPT_INFERIOR_RM_PROGRAM" = x"yes"; then
2007    echo 'Configuration will proceed anyway, since you have set the' >&2
2008    echo 'ACCEPT_INFERIOR_RM_PROGRAM variable to "yes"' >&2
2009    echo >&2
2010  else
2011    cat >&2 <<'END'
2012Aborting the configuration process, to ensure you take notice of the issue.
2013
2014You can download and install GNU coreutils to get an 'rm' implementation
2015that behaves properly: <https://www.gnu.org/software/coreutils/>.
2016
2017If you want to complete the configuration process using your problematic
2018'rm' anyway, export the environment variable ACCEPT_INFERIOR_RM_PROGRAM
2019to "yes", and re-run configure.
2020
2021END
2022    AC_MSG_ERROR([Your 'rm' program is bad, sorry.])
2023  fi
2024fi
2025dnl The trailing newline in this macro's definition is deliberate, for
2026dnl backward compatibility and to allow trailing 'dnl'-style comments
2027dnl after the AM_INIT_AUTOMAKE invocation. See automake bug#16841.
2028])
2029
2030dnl Hook into '_AC_COMPILER_EXEEXT' early to learn its expansion.  Do not
2031dnl add the conditional right here, as _AC_COMPILER_EXEEXT may be further
2032dnl mangled by Autoconf and run in a shell conditional statement.
2033m4_define([_AC_COMPILER_EXEEXT],
2034m4_defn([_AC_COMPILER_EXEEXT])[m4_provide([_AM_COMPILER_EXEEXT])])
2035
2036# When config.status generates a header, we must update the stamp-h file.
2037# This file resides in the same directory as the config header
2038# that is generated.  The stamp files are numbered to have different names.
2039
2040# Autoconf calls _AC_AM_CONFIG_HEADER_HOOK (when defined) in the
2041# loop where config.status creates the headers, so we can generate
2042# our stamp files there.
2043AC_DEFUN([_AC_AM_CONFIG_HEADER_HOOK],
2044[# Compute $1's index in $config_headers.
2045_am_arg=$1
2046_am_stamp_count=1
2047for _am_header in $config_headers :; do
2048  case $_am_header in
2049    $_am_arg | $_am_arg:* )
2050      break ;;
2051    * )
2052      _am_stamp_count=`expr $_am_stamp_count + 1` ;;
2053  esac
2054done
2055echo "timestamp for $_am_arg" >`AS_DIRNAME(["$_am_arg"])`/stamp-h[]$_am_stamp_count])
2056
2057# Copyright (C) 2001-2018 Free Software Foundation, Inc.
2058#
2059# This file is free software; the Free Software Foundation
2060# gives unlimited permission to copy and/or distribute it,
2061# with or without modifications, as long as this notice is preserved.
2062
2063# AM_PROG_INSTALL_SH
2064# ------------------
2065# Define $install_sh.
2066AC_DEFUN([AM_PROG_INSTALL_SH],
2067[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
2068if test x"${install_sh+set}" != xset; then
2069  case $am_aux_dir in
2070  *\ * | *\	*)
2071    install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
2072  *)
2073    install_sh="\${SHELL} $am_aux_dir/install-sh"
2074  esac
2075fi
2076AC_SUBST([install_sh])])
2077
2078# Copyright (C) 2003-2018 Free Software Foundation, Inc.
2079#
2080# This file is free software; the Free Software Foundation
2081# gives unlimited permission to copy and/or distribute it,
2082# with or without modifications, as long as this notice is preserved.
2083
2084# Check whether the underlying file-system supports filenames
2085# with a leading dot.  For instance MS-DOS doesn't.
2086AC_DEFUN([AM_SET_LEADING_DOT],
2087[rm -rf .tst 2>/dev/null
2088mkdir .tst 2>/dev/null
2089if test -d .tst; then
2090  am__leading_dot=.
2091else
2092  am__leading_dot=_
2093fi
2094rmdir .tst 2>/dev/null
2095AC_SUBST([am__leading_dot])])
2096
2097# Copyright (C) 1998-2018 Free Software Foundation, Inc.
2098#
2099# This file is free software; the Free Software Foundation
2100# gives unlimited permission to copy and/or distribute it,
2101# with or without modifications, as long as this notice is preserved.
2102
2103# AM_PROG_LEX
2104# -----------
2105# Autoconf leaves LEX=: if lex or flex can't be found.  Change that to a
2106# "missing" invocation, for better error output.
2107AC_DEFUN([AM_PROG_LEX],
2108[AC_PREREQ([2.50])dnl
2109AC_REQUIRE([AM_MISSING_HAS_RUN])dnl
2110AC_REQUIRE([AC_PROG_LEX])dnl
2111if test "$LEX" = :; then
2112  LEX=${am_missing_run}flex
2113fi])
2114
2115# Add --enable-maintainer-mode option to configure.         -*- Autoconf -*-
2116# From Jim Meyering
2117
2118# Copyright (C) 1996-2018 Free Software Foundation, Inc.
2119#
2120# This file is free software; the Free Software Foundation
2121# gives unlimited permission to copy and/or distribute it,
2122# with or without modifications, as long as this notice is preserved.
2123
2124# AM_MAINTAINER_MODE([DEFAULT-MODE])
2125# ----------------------------------
2126# Control maintainer-specific portions of Makefiles.
2127# Default is to disable them, unless 'enable' is passed literally.
2128# For symmetry, 'disable' may be passed as well.  Anyway, the user
2129# can override the default with the --enable/--disable switch.
2130AC_DEFUN([AM_MAINTAINER_MODE],
2131[m4_case(m4_default([$1], [disable]),
2132       [enable], [m4_define([am_maintainer_other], [disable])],
2133       [disable], [m4_define([am_maintainer_other], [enable])],
2134       [m4_define([am_maintainer_other], [enable])
2135        m4_warn([syntax], [unexpected argument to AM@&t@_MAINTAINER_MODE: $1])])
2136AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
2137  dnl maintainer-mode's default is 'disable' unless 'enable' is passed
2138  AC_ARG_ENABLE([maintainer-mode],
2139    [AS_HELP_STRING([--]am_maintainer_other[-maintainer-mode],
2140      am_maintainer_other[ make rules and dependencies not useful
2141      (and sometimes confusing) to the casual installer])],
2142    [USE_MAINTAINER_MODE=$enableval],
2143    [USE_MAINTAINER_MODE=]m4_if(am_maintainer_other, [enable], [no], [yes]))
2144  AC_MSG_RESULT([$USE_MAINTAINER_MODE])
2145  AM_CONDITIONAL([MAINTAINER_MODE], [test $USE_MAINTAINER_MODE = yes])
2146  MAINT=$MAINTAINER_MODE_TRUE
2147  AC_SUBST([MAINT])dnl
2148]
2149)
2150
2151# Check to see how 'make' treats includes.	            -*- Autoconf -*-
2152
2153# Copyright (C) 2001-2018 Free Software Foundation, Inc.
2154#
2155# This file is free software; the Free Software Foundation
2156# gives unlimited permission to copy and/or distribute it,
2157# with or without modifications, as long as this notice is preserved.
2158
2159# AM_MAKE_INCLUDE()
2160# -----------------
2161# Check whether make has an 'include' directive that can support all
2162# the idioms we need for our automatic dependency tracking code.
2163AC_DEFUN([AM_MAKE_INCLUDE],
2164[AC_MSG_CHECKING([whether ${MAKE-make} supports the include directive])
2165cat > confinc.mk << 'END'
2166am__doit:
2167	@echo this is the am__doit target >confinc.out
2168.PHONY: am__doit
2169END
2170am__include="#"
2171am__quote=
2172# BSD make does it like this.
2173echo '.include "confinc.mk" # ignored' > confmf.BSD
2174# Other make implementations (GNU, Solaris 10, AIX) do it like this.
2175echo 'include confinc.mk # ignored' > confmf.GNU
2176_am_result=no
2177for s in GNU BSD; do
2178  AM_RUN_LOG([${MAKE-make} -f confmf.$s && cat confinc.out])
2179  AS_CASE([$?:`cat confinc.out 2>/dev/null`],
2180      ['0:this is the am__doit target'],
2181      [AS_CASE([$s],
2182          [BSD], [am__include='.include' am__quote='"'],
2183          [am__include='include' am__quote=''])])
2184  if test "$am__include" != "#"; then
2185    _am_result="yes ($s style)"
2186    break
2187  fi
2188done
2189rm -f confinc.* confmf.*
2190AC_MSG_RESULT([${_am_result}])
2191AC_SUBST([am__include])])
2192AC_SUBST([am__quote])])
2193
2194# Fake the existence of programs that GNU maintainers use.  -*- Autoconf -*-
2195
2196# Copyright (C) 1997-2018 Free Software Foundation, Inc.
2197#
2198# This file is free software; the Free Software Foundation
2199# gives unlimited permission to copy and/or distribute it,
2200# with or without modifications, as long as this notice is preserved.
2201
2202# AM_MISSING_PROG(NAME, PROGRAM)
2203# ------------------------------
2204AC_DEFUN([AM_MISSING_PROG],
2205[AC_REQUIRE([AM_MISSING_HAS_RUN])
2206$1=${$1-"${am_missing_run}$2"}
2207AC_SUBST($1)])
2208
2209# AM_MISSING_HAS_RUN
2210# ------------------
2211# Define MISSING if not defined so far and test if it is modern enough.
2212# If it is, set am_missing_run to use it, otherwise, to nothing.
2213AC_DEFUN([AM_MISSING_HAS_RUN],
2214[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
2215AC_REQUIRE_AUX_FILE([missing])dnl
2216if test x"${MISSING+set}" != xset; then
2217  case $am_aux_dir in
2218  *\ * | *\	*)
2219    MISSING="\${SHELL} \"$am_aux_dir/missing\"" ;;
2220  *)
2221    MISSING="\${SHELL} $am_aux_dir/missing" ;;
2222  esac
2223fi
2224# Use eval to expand $SHELL
2225if eval "$MISSING --is-lightweight"; then
2226  am_missing_run="$MISSING "
2227else
2228  am_missing_run=
2229  AC_MSG_WARN(['missing' script is too old or missing])
2230fi
2231])
2232
2233# Helper functions for option handling.                     -*- Autoconf -*-
2234
2235# Copyright (C) 2001-2018 Free Software Foundation, Inc.
2236#
2237# This file is free software; the Free Software Foundation
2238# gives unlimited permission to copy and/or distribute it,
2239# with or without modifications, as long as this notice is preserved.
2240
2241# _AM_MANGLE_OPTION(NAME)
2242# -----------------------
2243AC_DEFUN([_AM_MANGLE_OPTION],
2244[[_AM_OPTION_]m4_bpatsubst($1, [[^a-zA-Z0-9_]], [_])])
2245
2246# _AM_SET_OPTION(NAME)
2247# --------------------
2248# Set option NAME.  Presently that only means defining a flag for this option.
2249AC_DEFUN([_AM_SET_OPTION],
2250[m4_define(_AM_MANGLE_OPTION([$1]), [1])])
2251
2252# _AM_SET_OPTIONS(OPTIONS)
2253# ------------------------
2254# OPTIONS is a space-separated list of Automake options.
2255AC_DEFUN([_AM_SET_OPTIONS],
2256[m4_foreach_w([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])])
2257
2258# _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET])
2259# -------------------------------------------
2260# Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
2261AC_DEFUN([_AM_IF_OPTION],
2262[m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])
2263
2264# Copyright (C) 1999-2018 Free Software Foundation, Inc.
2265#
2266# This file is free software; the Free Software Foundation
2267# gives unlimited permission to copy and/or distribute it,
2268# with or without modifications, as long as this notice is preserved.
2269
2270# _AM_PROG_CC_C_O
2271# ---------------
2272# Like AC_PROG_CC_C_O, but changed for automake.  We rewrite AC_PROG_CC
2273# to automatically call this.
2274AC_DEFUN([_AM_PROG_CC_C_O],
2275[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
2276AC_REQUIRE_AUX_FILE([compile])dnl
2277AC_LANG_PUSH([C])dnl
2278AC_CACHE_CHECK(
2279  [whether $CC understands -c and -o together],
2280  [am_cv_prog_cc_c_o],
2281  [AC_LANG_CONFTEST([AC_LANG_PROGRAM([])])
2282  # Make sure it works both with $CC and with simple cc.
2283  # Following AC_PROG_CC_C_O, we do the test twice because some
2284  # compilers refuse to overwrite an existing .o file with -o,
2285  # though they will create one.
2286  am_cv_prog_cc_c_o=yes
2287  for am_i in 1 2; do
2288    if AM_RUN_LOG([$CC -c conftest.$ac_ext -o conftest2.$ac_objext]) \
2289         && test -f conftest2.$ac_objext; then
2290      : OK
2291    else
2292      am_cv_prog_cc_c_o=no
2293      break
2294    fi
2295  done
2296  rm -f core conftest*
2297  unset am_i])
2298if test "$am_cv_prog_cc_c_o" != yes; then
2299   # Losing compiler, so override with the script.
2300   # FIXME: It is wrong to rewrite CC.
2301   # But if we don't then we get into trouble of one sort or another.
2302   # A longer-term fix would be to have automake use am__CC in this case,
2303   # and then we could set am__CC="\$(top_srcdir)/compile \$(CC)"
2304   CC="$am_aux_dir/compile $CC"
2305fi
2306AC_LANG_POP([C])])
2307
2308# For backward compatibility.
2309AC_DEFUN_ONCE([AM_PROG_CC_C_O], [AC_REQUIRE([AC_PROG_CC])])
2310
2311# Copyright (C) 2001-2018 Free Software Foundation, Inc.
2312#
2313# This file is free software; the Free Software Foundation
2314# gives unlimited permission to copy and/or distribute it,
2315# with or without modifications, as long as this notice is preserved.
2316
2317# AM_RUN_LOG(COMMAND)
2318# -------------------
2319# Run COMMAND, save the exit status in ac_status, and log it.
2320# (This has been adapted from Autoconf's _AC_RUN_LOG macro.)
2321AC_DEFUN([AM_RUN_LOG],
2322[{ echo "$as_me:$LINENO: $1" >&AS_MESSAGE_LOG_FD
2323   ($1) >&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD
2324   ac_status=$?
2325   echo "$as_me:$LINENO: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
2326   (exit $ac_status); }])
2327
2328# Check to make sure that the build environment is sane.    -*- Autoconf -*-
2329
2330# Copyright (C) 1996-2018 Free Software Foundation, Inc.
2331#
2332# This file is free software; the Free Software Foundation
2333# gives unlimited permission to copy and/or distribute it,
2334# with or without modifications, as long as this notice is preserved.
2335
2336# AM_SANITY_CHECK
2337# ---------------
2338AC_DEFUN([AM_SANITY_CHECK],
2339[AC_MSG_CHECKING([whether build environment is sane])
2340# Reject unsafe characters in $srcdir or the absolute working directory
2341# name.  Accept space and tab only in the latter.
2342am_lf='
2343'
2344case `pwd` in
2345  *[[\\\"\#\$\&\'\`$am_lf]]*)
2346    AC_MSG_ERROR([unsafe absolute working directory name]);;
2347esac
2348case $srcdir in
2349  *[[\\\"\#\$\&\'\`$am_lf\ \	]]*)
2350    AC_MSG_ERROR([unsafe srcdir value: '$srcdir']);;
2351esac
2352
2353# Do 'set' in a subshell so we don't clobber the current shell's
2354# arguments.  Must try -L first in case configure is actually a
2355# symlink; some systems play weird games with the mod time of symlinks
2356# (eg FreeBSD returns the mod time of the symlink's containing
2357# directory).
2358if (
2359   am_has_slept=no
2360   for am_try in 1 2; do
2361     echo "timestamp, slept: $am_has_slept" > conftest.file
2362     set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
2363     if test "$[*]" = "X"; then
2364	# -L didn't work.
2365	set X `ls -t "$srcdir/configure" conftest.file`
2366     fi
2367     if test "$[*]" != "X $srcdir/configure conftest.file" \
2368	&& test "$[*]" != "X conftest.file $srcdir/configure"; then
2369
2370	# If neither matched, then we have a broken ls.  This can happen
2371	# if, for instance, CONFIG_SHELL is bash and it inherits a
2372	# broken ls alias from the environment.  This has actually
2373	# happened.  Such a system could not be considered "sane".
2374	AC_MSG_ERROR([ls -t appears to fail.  Make sure there is not a broken
2375  alias in your environment])
2376     fi
2377     if test "$[2]" = conftest.file || test $am_try -eq 2; then
2378       break
2379     fi
2380     # Just in case.
2381     sleep 1
2382     am_has_slept=yes
2383   done
2384   test "$[2]" = conftest.file
2385   )
2386then
2387   # Ok.
2388   :
2389else
2390   AC_MSG_ERROR([newly created file is older than distributed files!
2391Check your system clock])
2392fi
2393AC_MSG_RESULT([yes])
2394# If we didn't sleep, we still need to ensure time stamps of config.status and
2395# generated files are strictly newer.
2396am_sleep_pid=
2397if grep 'slept: no' conftest.file >/dev/null 2>&1; then
2398  ( sleep 1 ) &
2399  am_sleep_pid=$!
2400fi
2401AC_CONFIG_COMMANDS_PRE(
2402  [AC_MSG_CHECKING([that generated files are newer than configure])
2403   if test -n "$am_sleep_pid"; then
2404     # Hide warnings about reused PIDs.
2405     wait $am_sleep_pid 2>/dev/null
2406   fi
2407   AC_MSG_RESULT([done])])
2408rm -f conftest.file
2409])
2410
2411# Copyright (C) 2009-2018 Free Software Foundation, Inc.
2412#
2413# This file is free software; the Free Software Foundation
2414# gives unlimited permission to copy and/or distribute it,
2415# with or without modifications, as long as this notice is preserved.
2416
2417# AM_SILENT_RULES([DEFAULT])
2418# --------------------------
2419# Enable less verbose build rules; with the default set to DEFAULT
2420# ("yes" being less verbose, "no" or empty being verbose).
2421AC_DEFUN([AM_SILENT_RULES],
2422[AC_ARG_ENABLE([silent-rules], [dnl
2423AS_HELP_STRING(
2424  [--enable-silent-rules],
2425  [less verbose build output (undo: "make V=1")])
2426AS_HELP_STRING(
2427  [--disable-silent-rules],
2428  [verbose build output (undo: "make V=0")])dnl
2429])
2430case $enable_silent_rules in @%:@ (((
2431  yes) AM_DEFAULT_VERBOSITY=0;;
2432   no) AM_DEFAULT_VERBOSITY=1;;
2433    *) AM_DEFAULT_VERBOSITY=m4_if([$1], [yes], [0], [1]);;
2434esac
2435dnl
2436dnl A few 'make' implementations (e.g., NonStop OS and NextStep)
2437dnl do not support nested variable expansions.
2438dnl See automake bug#9928 and bug#10237.
2439am_make=${MAKE-make}
2440AC_CACHE_CHECK([whether $am_make supports nested variables],
2441   [am_cv_make_support_nested_variables],
2442   [if AS_ECHO([['TRUE=$(BAR$(V))
2443BAR0=false
2444BAR1=true
2445V=1
2446am__doit:
2447	@$(TRUE)
2448.PHONY: am__doit']]) | $am_make -f - >/dev/null 2>&1; then
2449  am_cv_make_support_nested_variables=yes
2450else
2451  am_cv_make_support_nested_variables=no
2452fi])
2453if test $am_cv_make_support_nested_variables = yes; then
2454  dnl Using '$V' instead of '$(V)' breaks IRIX make.
2455  AM_V='$(V)'
2456  AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
2457else
2458  AM_V=$AM_DEFAULT_VERBOSITY
2459  AM_DEFAULT_V=$AM_DEFAULT_VERBOSITY
2460fi
2461AC_SUBST([AM_V])dnl
2462AM_SUBST_NOTMAKE([AM_V])dnl
2463AC_SUBST([AM_DEFAULT_V])dnl
2464AM_SUBST_NOTMAKE([AM_DEFAULT_V])dnl
2465AC_SUBST([AM_DEFAULT_VERBOSITY])dnl
2466AM_BACKSLASH='\'
2467AC_SUBST([AM_BACKSLASH])dnl
2468_AM_SUBST_NOTMAKE([AM_BACKSLASH])dnl
2469])
2470
2471# Copyright (C) 2001-2018 Free Software Foundation, Inc.
2472#
2473# This file is free software; the Free Software Foundation
2474# gives unlimited permission to copy and/or distribute it,
2475# with or without modifications, as long as this notice is preserved.
2476
2477# AM_PROG_INSTALL_STRIP
2478# ---------------------
2479# One issue with vendor 'install' (even GNU) is that you can't
2480# specify the program used to strip binaries.  This is especially
2481# annoying in cross-compiling environments, where the build's strip
2482# is unlikely to handle the host's binaries.
2483# Fortunately install-sh will honor a STRIPPROG variable, so we
2484# always use install-sh in "make install-strip", and initialize
2485# STRIPPROG with the value of the STRIP variable (set by the user).
2486AC_DEFUN([AM_PROG_INSTALL_STRIP],
2487[AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
2488# Installed binaries are usually stripped using 'strip' when the user
2489# run "make install-strip".  However 'strip' might not be the right
2490# tool to use in cross-compilation environments, therefore Automake
2491# will honor the 'STRIP' environment variable to overrule this program.
2492dnl Don't test for $cross_compiling = yes, because it might be 'maybe'.
2493if test "$cross_compiling" != no; then
2494  AC_CHECK_TOOL([STRIP], [strip], :)
2495fi
2496INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
2497AC_SUBST([INSTALL_STRIP_PROGRAM])])
2498
2499# Copyright (C) 2006-2018 Free Software Foundation, Inc.
2500#
2501# This file is free software; the Free Software Foundation
2502# gives unlimited permission to copy and/or distribute it,
2503# with or without modifications, as long as this notice is preserved.
2504
2505# _AM_SUBST_NOTMAKE(VARIABLE)
2506# ---------------------------
2507# Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in.
2508# This macro is traced by Automake.
2509AC_DEFUN([_AM_SUBST_NOTMAKE])
2510
2511# AM_SUBST_NOTMAKE(VARIABLE)
2512# --------------------------
2513# Public sister of _AM_SUBST_NOTMAKE.
2514AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
2515
2516# Check how to create a tarball.                            -*- Autoconf -*-
2517
2518# Copyright (C) 2004-2018 Free Software Foundation, Inc.
2519#
2520# This file is free software; the Free Software Foundation
2521# gives unlimited permission to copy and/or distribute it,
2522# with or without modifications, as long as this notice is preserved.
2523
2524# _AM_PROG_TAR(FORMAT)
2525# --------------------
2526# Check how to create a tarball in format FORMAT.
2527# FORMAT should be one of 'v7', 'ustar', or 'pax'.
2528#
2529# Substitute a variable $(am__tar) that is a command
2530# writing to stdout a FORMAT-tarball containing the directory
2531# $tardir.
2532#     tardir=directory && $(am__tar) > result.tar
2533#
2534# Substitute a variable $(am__untar) that extract such
2535# a tarball read from stdin.
2536#     $(am__untar) < result.tar
2537#
2538AC_DEFUN([_AM_PROG_TAR],
2539[# Always define AMTAR for backward compatibility.  Yes, it's still used
2540# in the wild :-(  We should find a proper way to deprecate it ...
2541AC_SUBST([AMTAR], ['$${TAR-tar}'])
2542
2543# We'll loop over all known methods to create a tar archive until one works.
2544_am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
2545
2546m4_if([$1], [v7],
2547  [am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'],
2548
2549  [m4_case([$1],
2550    [ustar],
2551     [# The POSIX 1988 'ustar' format is defined with fixed-size fields.
2552      # There is notably a 21 bits limit for the UID and the GID.  In fact,
2553      # the 'pax' utility can hang on bigger UID/GID (see automake bug#8343
2554      # and bug#13588).
2555      am_max_uid=2097151 # 2^21 - 1
2556      am_max_gid=$am_max_uid
2557      # The $UID and $GID variables are not portable, so we need to resort
2558      # to the POSIX-mandated id(1) utility.  Errors in the 'id' calls
2559      # below are definitely unexpected, so allow the users to see them
2560      # (that is, avoid stderr redirection).
2561      am_uid=`id -u || echo unknown`
2562      am_gid=`id -g || echo unknown`
2563      AC_MSG_CHECKING([whether UID '$am_uid' is supported by ustar format])
2564      if test $am_uid -le $am_max_uid; then
2565         AC_MSG_RESULT([yes])
2566      else
2567         AC_MSG_RESULT([no])
2568         _am_tools=none
2569      fi
2570      AC_MSG_CHECKING([whether GID '$am_gid' is supported by ustar format])
2571      if test $am_gid -le $am_max_gid; then
2572         AC_MSG_RESULT([yes])
2573      else
2574        AC_MSG_RESULT([no])
2575        _am_tools=none
2576      fi],
2577
2578  [pax],
2579    [],
2580
2581  [m4_fatal([Unknown tar format])])
2582
2583  AC_MSG_CHECKING([how to create a $1 tar archive])
2584
2585  # Go ahead even if we have the value already cached.  We do so because we
2586  # need to set the values for the 'am__tar' and 'am__untar' variables.
2587  _am_tools=${am_cv_prog_tar_$1-$_am_tools}
2588
2589  for _am_tool in $_am_tools; do
2590    case $_am_tool in
2591    gnutar)
2592      for _am_tar in tar gnutar gtar; do
2593        AM_RUN_LOG([$_am_tar --version]) && break
2594      done
2595      am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"'
2596      am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"'
2597      am__untar="$_am_tar -xf -"
2598      ;;
2599    plaintar)
2600      # Must skip GNU tar: if it does not support --format= it doesn't create
2601      # ustar tarball either.
2602      (tar --version) >/dev/null 2>&1 && continue
2603      am__tar='tar chf - "$$tardir"'
2604      am__tar_='tar chf - "$tardir"'
2605      am__untar='tar xf -'
2606      ;;
2607    pax)
2608      am__tar='pax -L -x $1 -w "$$tardir"'
2609      am__tar_='pax -L -x $1 -w "$tardir"'
2610      am__untar='pax -r'
2611      ;;
2612    cpio)
2613      am__tar='find "$$tardir" -print | cpio -o -H $1 -L'
2614      am__tar_='find "$tardir" -print | cpio -o -H $1 -L'
2615      am__untar='cpio -i -H $1 -d'
2616      ;;
2617    none)
2618      am__tar=false
2619      am__tar_=false
2620      am__untar=false
2621      ;;
2622    esac
2623
2624    # If the value was cached, stop now.  We just wanted to have am__tar
2625    # and am__untar set.
2626    test -n "${am_cv_prog_tar_$1}" && break
2627
2628    # tar/untar a dummy directory, and stop if the command works.
2629    rm -rf conftest.dir
2630    mkdir conftest.dir
2631    echo GrepMe > conftest.dir/file
2632    AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar])
2633    rm -rf conftest.dir
2634    if test -s conftest.tar; then
2635      AM_RUN_LOG([$am__untar <conftest.tar])
2636      AM_RUN_LOG([cat conftest.dir/file])
2637      grep GrepMe conftest.dir/file >/dev/null 2>&1 && break
2638    fi
2639  done
2640  rm -rf conftest.dir
2641
2642  AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])
2643  AC_MSG_RESULT([$am_cv_prog_tar_$1])])
2644
2645AC_SUBST([am__tar])
2646AC_SUBST([am__untar])
2647]) # _AM_PROG_TAR
2648
2649m4_include([m4/ax_pthread.m4])
2650m4_include([m4/iconv.m4])
2651m4_include([m4/libtool.m4])
2652m4_include([m4/ltoptions.m4])
2653m4_include([m4/ltsugar.m4])
2654m4_include([m4/ltversion.m4])
2655m4_include([m4/lt~obsolete.m4])
2656