aboutsummaryrefslogtreecommitdiff
path: root/sntp/libopts/m4/libopts.m4
blob: 1a896d9759a5b5b863aa57b73b652097e9afb7a1 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
dnl  -*- buffer-read-only: t -*- vi: set ro:
dnl
dnl DO NOT EDIT THIS FILE   (libopts.m4)
dnl
dnl It has been AutoGen-ed
dnl From the definitions    libopts.def
dnl and the template file   conftest.tpl
dnl
dnl do always before generated macros:
dnl
AC_DEFUN([INVOKE_LIBOPTS_MACROS_FIRST],[
  AC_REQUIRE([AC_HEADER_STDC])
  AC_HEADER_DIRENT

  # =================
  # AC_CHECK_HEADERS
  # =================
  AC_CHECK_HEADERS([ \
      sys/mman.h    sys/param.h   sys/poll.h    sys/procset.h \
      sys/select.h  sys/socket.h  sys/stropts.h sys/time.h \
      sys/un.h      sys/wait.h    dlfcn.h       errno.h \
      fcntl.h       libgen.h      libintl.h     memory.h \
      netinet/in.h  setjmp.h      stdbool.h     sysexits.h \
      unistd.h      utime.h])

  AC_CHECK_HEADERS([stdarg.h     varargs.h],
      [lo_have_arg_hdr=true;break],
      [lo_have_arg_hdr=false])

  AC_CHECK_HEADERS([string.h     strings.h],
      [lo_have_str_hdr=true;break],
      [lo_have_str_hdr=false])

  AC_CHECK_HEADERS([limits.h     sys/limits.h  values.h],
      [lo_have_lim_hdr=true;break],
      [lo_have_lim_hdr=false])

  AC_CHECK_HEADERS([inttypes.h   stdint.h],
      [lo_have_typ_hdr=true;break],
      [lo_have_typ_hdr=false])
  gl_STDNORETURN_H

  # ----------------------------------------------------------------------
  # check for various programs used during the build.
  # On OS/X, "wchar.h" needs "runetype.h" to work properly.
  # ----------------------------------------------------------------------
  AC_CHECK_HEADERS([runetype.h wchar.h], [], [],[
  AC_INCLUDES_DEFAULT
  #if HAVE_RUNETYPE_H
  # include <runetype.h>
  #endif
  ])

  AC_ARG_ENABLE([nls],
  AS_HELP_STRING([--disable-nls],[disable nls support in libopts]))
  AS_IF([test "x$enable_nls" != "xno" && \
  test "X${ac_cv_header_libintl_h}" = Xyes], [
  AC_DEFINE([ENABLE_NLS],[1],[nls support in libopts])])

  # --------------------------------------------
  # Verify certain entries from AC_CHECK_HEADERS
  # --------------------------------------------
  [${lo_have_arg_hdr} || \
    ]AC_MSG_ERROR([you must have stdarg.h or varargs.h on your system])[

  ${lo_have_str_hdr} || \
    ]AC_MSG_ERROR([you must have string.h or strings.h on your system])[

  ${lo_have_lim_hdr} || \
    ]AC_MSG_ERROR(
      [you must have one of limits.h, sys/limits.h or values.h])[

  ${lo_have_typ_hdr} || \
    ]AC_MSG_ERROR([you must have inttypes.h or stdint.h on your system])[

  for f in sys_types sys_param sys_stat string errno stdlib memory setjmp
  do eval as_ac_var=\${ac_cv_header_${f}_h}
     test "X${as_ac_var}" = Xyes || {
       ]AC_MSG_ERROR([you must have ${f}.h on your system])[
     }
  done
  test "X${ac_cv_header_inttypes_h-no}" = Xyes || \
    echo '#include <stdint.h>' > inttypes.h]

  # ----------------------------------------------------------------------
  # Checks for typedefs
  # ----------------------------------------------------------------------
  AC_CHECK_TYPES(wchar_t)
  AC_CHECK_TYPES(wint_t, [], [], [
    AC_INCLUDES_DEFAULT
    #if HAVE_RUNETYPE_H
    # include <runetype.h>
    #endif
    #if HAVE_WCHAR_H
    # include <wchar.h>
    #endif
  ])
  AC_CHECK_TYPES([int8_t, uint8_t, int16_t, uint16_t, int32_t, uint32_t,
  intptr_t, uintptr_t, uint_t, pid_t, size_t, ptrdiff_t])
  AC_CHECK_SIZEOF(char *, 8)
  AC_CHECK_SIZEOF(int,    4)
  AC_CHECK_SIZEOF(long,   8)
  AC_CHECK_SIZEOF(short,  2)

  # ------------
  # AC_CHECK_LIB
  # ------------
  AC_CHECK_LIB(gen, pathfind)
  AC_CHECK_LIB(intl,gettext)
  AC_FUNC_VPRINTF
  AC_FUNC_FORK
  AC_CHECK_FUNCS([mmap canonicalize_file_name snprintf strdup strchr \
                 strrchr strsignal fchmod fstat chmod])
  AC_PROG_SED
  [while :
  do
      POSIX_SHELL=`which bash`
      test -x "$POSIX_SHELL" && break
      POSIX_SHELL=`which dash`
      test -x "$POSIX_SHELL" && break
      POSIX_SHELL=/usr/xpg4/bin/sh
      test -x "$POSIX_SHELL" && break
      POSIX_SHELL=`/bin/sh -c '
          exec 2>/dev/null
          if ! true ; then exit 1 ; fi
          echo /bin/sh'`
      test -x "$POSIX_SHELL" && break
      ]AC_MSG_ERROR([cannot locate a working POSIX shell])[
  done]
  AC_DEFINE_UNQUOTED([POSIX_SHELL], ["${POSIX_SHELL}"],
           [define to a working POSIX compliant shell])
  AC_SUBST([POSIX_SHELL])
])

dnl
dnl @synopsis  INVOKE_LIBOPTS_MACROS
dnl
dnl  This macro will invoke the AutoConf macros specified in libopts.def
dnl  that have not been disabled with "omit-invocation".
dnl
AC_DEFUN([LIBOPTS_WITH_REGEX_HEADER],[
  AC_ARG_WITH([regex-header],
    AS_HELP_STRING([--with-regex-header], [a reg expr header is specified]),
    [libopts_cv_with_regex_header=${with_regex_header}],
    AC_CACHE_CHECK([whether a reg expr header is specified], libopts_cv_with_regex_header,
      libopts_cv_with_regex_header=no)
  ) # end of AC_ARG_WITH
  if test "X${libopts_cv_with_regex_header}" != Xno
  then
    AC_DEFINE_UNQUOTED([REGEX_HEADER],[<${libopts_cv_with_regex_header}>])
  else
    AC_DEFINE([REGEX_HEADER],[<regex.h>],[name of regex header file])
  fi

]) # end of AC_DEFUN of LIBOPTS_WITH_REGEX_HEADER


AC_DEFUN([LIBOPTS_WITHLIB_REGEX],[
  AC_ARG_WITH([libregex],
    AS_HELP_STRING([--with-libregex], [libregex installation prefix]),
    [libopts_cv_with_libregex_root=${with_libregex}],
    AC_CACHE_CHECK([whether with-libregex was specified], libopts_cv_with_libregex_root,
      libopts_cv_with_libregex_root=no)
  ) # end of AC_ARG_WITH libregex

  if test "${with_libregex+set}" = set && \
     test "X${withval}" = Xno
  then ## disabled by request
    libopts_cv_with_libregex_root=no
    libopts_cv_with_libregex_cflags=no
    libopts_cv_with_libregex_libs=no
  else

  AC_ARG_WITH([libregex-cflags],
    AS_HELP_STRING([--with-libregex-cflags], [libregex compile flags]),
    [libopts_cv_with_libregex_cflags=${with_libregex_cflags}],
    AC_CACHE_CHECK([whether with-libregex-cflags was specified], libopts_cv_with_libregex_cflags,
      libopts_cv_with_libregex_cflags=no)
  ) # end of AC_ARG_WITH libregex-cflags

  AC_ARG_WITH([libregex-libs],
    AS_HELP_STRING([--with-libregex-libs], [libregex link command arguments]),
    [libopts_cv_with_libregex_libs=${with_libregex_libs}],
    AC_CACHE_CHECK([whether with-libregex-libs was specified], libopts_cv_with_libregex_libs,
      libopts_cv_with_libregex_libs=no)
  ) # end of AC_ARG_WITH libregex-libs

  case "X${libopts_cv_with_libregex_cflags}" in
  Xyes|Xno|X )
    case "X${libopts_cv_with_libregex_root}" in
    Xyes|Xno|X ) libopts_cv_with_libregex_cflags=no ;;
    * ) libopts_cv_with_libregex_cflags=-I${libopts_cv_with_libregex_root}/include ;;
    esac
  esac
  case "X${libopts_cv_with_libregex_libs}" in
  Xyes|Xno|X )
    case "X${libopts_cv_with_libregex_root}" in
    Xyes|Xno|X ) libopts_cv_with_libregex_libs=no ;;
    * )        libopts_cv_with_libregex_libs="-L${libopts_cv_with_libregex_root}/lib -lregex" ;;
    esac
  esac
  libopts_save_CPPFLAGS="${CPPFLAGS}"
  libopts_save_LIBS="${LIBS}"
  case "X${libopts_cv_with_libregex_cflags}" in
  Xyes|Xno|X )
    libopts_cv_with_libregex_cflags="" ;;
  * ) CPPFLAGS="${CPPFLAGS} ${libopts_cv_with_libregex_cflags}" ;;
  esac
  case "X${libopts_cv_with_libregex_libs}" in
  Xyes|Xno|X )
    libopts_cv_with_libregex_libs="" ;;
  * )
    LIBS="${LIBS} ${libopts_cv_with_libregex_libs}" ;;
  esac
  LIBREGEX_CFLAGS=""
  LIBREGEX_LIBS=""
  AC_MSG_CHECKING([whether libregex functions properly])
  AC_CACHE_VAL([libopts_cv_with_libregex],[
  AC_RUN_IFELSE([@%:@include <stdio.h>
@%:@include <stdlib.h>
@%:@include <sys/types.h>
@%:@include REGEX_HEADER
static regex_t re;
void comp_re(char const * pzPat) {
  int res = regcomp( &re, pzPat, REG_EXTENDED|REG_ICASE|REG_NEWLINE );
  if (res == 0) return;
  exit( res ); }
int main() {
  regmatch_t m@<:@2@:>@;
  comp_re( "^.*\@S|@"   );
  comp_re( "()|no.*" );
  comp_re( "."       );
  if (regexec( &re, "X", 2, m, 0 ) != 0)  return 1;
  if ((m@<:@0@:>@.rm_so != 0) || (m@<:@0@:>@.rm_eo != 1)) {
    fputs( "error: regex -->.<-- did not match\n", stderr );
    return 1;
  }
  return 0; }],
    [libopts_cv_with_libregex=yes], [libopts_cv_with_libregex=no],
    [libopts_cv_with_libregex=no]) # end of AC_RUN_IFELSE 
  ]) # end of AC_CACHE_VAL for libopts_cv_with_libregex
  fi ## disabled by request
  AC_MSG_RESULT([${libopts_cv_with_libregex}])
  if test "X${libopts_cv_with_libregex}" != Xno
  then
    AC_DEFINE([WITH_LIBREGEX],[1],
        [Define this if a working libregex can be found])
  else
    CPPFLAGS="${libopts_save_CPPFLAGS}"
    LIBS="${libopts_save_LIBS}"
    libopts_cv_with_libregex_root=no
libopts_cv_with_libregex_cflags=no
libopts_cv_with_libregex_libs=no
libopts_cv_with_libregex=no
  fi

]) # end of AC_DEFUN of LIBOPTS_WITHLIB_REGEX


AC_DEFUN([LIBOPTS_RUN_PATHFIND],[
  AC_MSG_CHECKING([whether pathfind(3) works])
  AC_CACHE_VAL([libopts_cv_run_pathfind],[
  AC_RUN_IFELSE([@%:@include <string.h>
@%:@include <stdlib.h>
int main (int argc, char ** argv) {
   char * pz = pathfind( getenv( "PATH" ), "sh", "x" );
   return (pz == 0) ? 1 : 0;
}],
    [libopts_cv_run_pathfind=yes],[libopts_cv_run_pathfind=no],[libopts_cv_run_pathfind=no]
  ) # end of RUN_IFELSE
  ]) # end of AC_CACHE_VAL for libopts_cv_run_pathfind
  AC_MSG_RESULT([${libopts_cv_run_pathfind}])
  if test "X${libopts_cv_run_pathfind}" != Xno
  then
    AC_DEFINE([HAVE_PATHFIND],[1],
        [Define this if pathfind(3) works])
  fi

]) # end of AC_DEFUN of LIBOPTS_RUN_PATHFIND


AC_DEFUN([LIBOPTS_TEST_DEV_ZERO],[
  AC_MSG_CHECKING([whether /dev/zero is readable device])
  AC_CACHE_VAL([libopts_cv_test_dev_zero],[
    libopts_cv_test_dev_zero=`exec 2> /dev/null
dzero=\`ls -lL /dev/zero | egrep ^c......r\`
test -z "${dzero}" && exit 1
echo ${dzero}`
    if test $? -ne 0 || test -z "$libopts_cv_test_dev_zero"
    then libopts_cv_test_dev_zero=no
    fi
  ]) # end of CACHE_VAL of libopts_cv_test_dev_zero
  AC_MSG_RESULT([${libopts_cv_test_dev_zero}])
  if test "X${libopts_cv_test_dev_zero}" != Xno
  then
    AC_DEFINE([HAVE_DEV_ZERO],[1],
        [Define this if /dev/zero is readable device])
  fi

]) # end of AC_DEFUN of LIBOPTS_TEST_DEV_ZERO


AC_DEFUN([LIBOPTS_RUN_REALPATH],[
  AC_MSG_CHECKING([whether we have a functional realpath(3C)])
  AC_CACHE_VAL([libopts_cv_run_realpath],[
  AC_RUN_IFELSE([@%:@include <limits.h>
@%:@include <stdlib.h>
int main (int argc, char ** argv) {
@%:@ifndef PATH_MAX
choke me!!
@%:@else
   char zPath@<:@PATH_MAX+1@:>@;
@%:@endif
   char *pz = realpath(argv@<:@0@:>@, zPath);
   return (pz == zPath) ? 0 : 1;
}],
    [libopts_cv_run_realpath=yes],[libopts_cv_run_realpath=no],[libopts_cv_run_realpath=no]
  ) # end of RUN_IFELSE
  ]) # end of AC_CACHE_VAL for libopts_cv_run_realpath
  AC_MSG_RESULT([${libopts_cv_run_realpath}])
  if test "X${libopts_cv_run_realpath}" != Xno
  then
    AC_DEFINE([HAVE_REALPATH],[1],
        [Define this if we have a functional realpath(3C)])
  fi

]) # end of AC_DEFUN of LIBOPTS_RUN_REALPATH


AC_DEFUN([LIBOPTS_RUN_STRFTIME],[
  AC_MSG_CHECKING([whether strftime() works])
  AC_CACHE_VAL([libopts_cv_run_strftime],[
  AC_RUN_IFELSE([@%:@include <time.h>
@%:@include <string.h>
char t_buf@<:@ 64 @:>@;
int main() {
  static char const z@<:@@:>@ = "Thursday Aug 28 240";
  struct tm tm;
  tm.tm_sec   = 36;  /* seconds after the minute @<:@0, 61@:>@  */
  tm.tm_min   = 44;  /* minutes after the hour @<:@0, 59@:>@ */
  tm.tm_hour  = 12;  /* hour since midnight @<:@0, 23@:>@ */
  tm.tm_mday  = 28;  /* day of the month @<:@1, 31@:>@ */
  tm.tm_mon   =  7;  /* months since January @<:@0, 11@:>@ */
  tm.tm_year  = 86;  /* years since 1900 */
  tm.tm_wday  =  4;  /* days since Sunday @<:@0, 6@:>@ */
  tm.tm_yday  = 239; /* days since January 1 @<:@0, 365@:>@ */
  tm.tm_isdst =  1;  /* flag for daylight savings time */
  strftime( t_buf, sizeof( t_buf ), "%A %b %d %j", &tm );
  return (strcmp( t_buf, z ) != 0); }],
    [libopts_cv_run_strftime=yes],[libopts_cv_run_strftime=no],[libopts_cv_run_strftime=no]
  ) # end of RUN_IFELSE
  ]) # end of AC_CACHE_VAL for libopts_cv_run_strftime
  AC_MSG_RESULT([${libopts_cv_run_strftime}])
  if test "X${libopts_cv_run_strftime}" != Xno
  then
    AC_DEFINE([HAVE_STRFTIME],[1],
        [Define this if strftime() works])
  fi

]) # end of AC_DEFUN of LIBOPTS_RUN_STRFTIME


AC_DEFUN([LIBOPTS_RUN_FOPEN_BINARY],[
  AC_MSG_CHECKING([whether fopen accepts "b" mode])
  AC_CACHE_VAL([libopts_cv_run_fopen_binary],[
  AC_RUN_IFELSE([@%:@include <stdio.h>
int main (int argc, char ** argv) {
FILE * fp = fopen("conftest.@S|@ac_ext", "rb");
return (fp == NULL) ? 1 : fclose(fp); }],
    [libopts_cv_run_fopen_binary=yes],[libopts_cv_run_fopen_binary=no],[libopts_cv_run_fopen_binary=no]
  ) # end of RUN_IFELSE
  ]) # end of AC_CACHE_VAL for libopts_cv_run_fopen_binary
  AC_MSG_RESULT([${libopts_cv_run_fopen_binary}])
  if test "X${libopts_cv_run_fopen_binary}" != Xno
  then
    AC_DEFINE([FOPEN_BINARY_FLAG],"b",
	[fopen(3) accepts a 'b' in the mode flag])
  else
    AC_DEFINE([FOPEN_BINARY_FLAG],"",
	[fopen(3) accepts a 'b' in the mode flag])
  fi

]) # end of AC_DEFUN of LIBOPTS_RUN_FOPEN_BINARY


AC_DEFUN([LIBOPTS_RUN_FOPEN_TEXT],[
  AC_MSG_CHECKING([whether fopen accepts "t" mode])
  AC_CACHE_VAL([libopts_cv_run_fopen_text],[
  AC_RUN_IFELSE([@%:@include <stdio.h>
int main (int argc, char ** argv) {
FILE * fp = fopen("conftest.@S|@ac_ext", "rt");
return (fp == NULL) ? 1 : fclose(fp); }],
    [libopts_cv_run_fopen_text=yes],[libopts_cv_run_fopen_text=no],[libopts_cv_run_fopen_text=no]
  ) # end of RUN_IFELSE
  ]) # end of AC_CACHE_VAL for libopts_cv_run_fopen_text
  AC_MSG_RESULT([${libopts_cv_run_fopen_text}])
  if test "X${libopts_cv_run_fopen_text}" != Xno
  then
    AC_DEFINE([FOPEN_TEXT_FLAG],"t",
	[fopen(3) accepts a 't' in the mode flag])
  else
    AC_DEFINE([FOPEN_TEXT_FLAG],"",
	[fopen(3) accepts a 't' in the mode flag])
  fi

]) # end of AC_DEFUN of LIBOPTS_RUN_FOPEN_TEXT


AC_DEFUN([LIBOPTS_DISABLE_OPTIONAL_ARGS],[
  AC_ARG_ENABLE([optional-args],
    AS_HELP_STRING([--disable-optional-args], [not wanting optional option args]),
    [libopts_cv_enable_optional_args=${enable_optional_args}],
    AC_CACHE_CHECK([whether not wanting optional option args], libopts_cv_enable_optional_args,
      libopts_cv_enable_optional_args=yes)
  ) # end of AC_ARG_ENABLE
  if test "X${libopts_cv_enable_optional_args}" = Xno
  then
    AC_DEFINE([NO_OPTIONAL_OPT_ARGS], [1],
          [Define this if optional arguments are disallowed])
  fi

]) # end of AC_DEFUN of LIBOPTS_DISABLE_OPTIONAL_ARGS


AC_DEFUN([INVOKE_LIBOPTS_MACROS],[
  AC_REQUIRE([INVOKE_LIBOPTS_MACROS_FIRST])
  # Check to see if a reg expr header is specified.
  LIBOPTS_WITH_REGEX_HEADER

  # Check to see if a working libregex can be found.
  LIBOPTS_WITHLIB_REGEX

  # Check to see if pathfind(3) works.
  LIBOPTS_RUN_PATHFIND

  # Check to see if /dev/zero is readable device.
  LIBOPTS_TEST_DEV_ZERO

  # Check to see if we have a functional realpath(3C).
  LIBOPTS_RUN_REALPATH

  # Check to see if strftime() works.
  LIBOPTS_RUN_STRFTIME

  # Check to see if fopen accepts "b" mode.
  LIBOPTS_RUN_FOPEN_BINARY

  # Check to see if fopen accepts "t" mode.
  LIBOPTS_RUN_FOPEN_TEXT

  # Check to see if not wanting optional option args.
  LIBOPTS_DISABLE_OPTIONAL_ARGS

]) # end AC_DEFUN of INVOKE_LIBOPTS_MACROS

dnl @synopsis  LIBOPTS_CHECK
dnl
dnl If autoopts-config works, add the linking information to LIBS.
dnl Otherwise, add ``libopts-${ao_rev}'' to SUBDIRS and run all
dnl the config tests that the library needs.  Invoke the
dnl "INVOKE_LIBOPTS_MACROS" macro iff we are building libopts.
dnl
dnl  This file is part of AutoGen.
dnl  AutoGen Copyright (C) 1992-2015 by Bruce Korb - all rights reserved
dnl
dnl  AutoGen is free software: you can redistribute it and/or modify it
dnl  under the terms of the GNU General Public License as published by the
dnl  Free Software Foundation, either version 3 of the License, or
dnl  (at your option) any later version.
dnl
dnl  AutoGen is distributed in the hope that it will be useful, but
dnl  WITHOUT ANY WARRANTY; without even the implied warranty of
dnl  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
dnl  See the GNU General Public License for more details.
dnl
dnl  You should have received a copy of the GNU General Public License along
dnl  with this program.  If not, see <http://www.gnu.org/licenses/>.
dnl
dnl Default to system libopts
dnl
AC_DEFUN([LIBOPTS_CHECK_COMMON],[
  AC_REQUIRE([INVOKE_LIBOPTS_MACROS_FIRST])
  [NEED_LIBOPTS_DIR='']
  m4_pushdef([AO_Libopts_Dir],
	    [ifelse($1, , [libopts], [$1])])
  AC_ARG_ENABLE([local-libopts],
    AC_HELP_STRING([--enable-local-libopts],
       [Use the supplied libopts tearoff code]),[
    if test x$enableval = xyes ; then
       AC_MSG_NOTICE([Using supplied libopts tearoff])
       LIBOPTS_CFLAGS='-I$(top_srcdir)/AO_Libopts_Dir'
       NEED_LIBOPTS_DIR=true
       LIBOPTS_LDADD='$(top_builddir)/AO_Libopts_Dir/libopts.la'
    fi])

  AC_ARG_ENABLE([libopts-install],
    AC_HELP_STRING([--enable-libopts-install],
       [Install libopts with client installation]))
  AM_CONDITIONAL([INSTALL_LIBOPTS],[test "X${enable_libopts_install}" = Xyes])

  [if test -z "${NEED_LIBOPTS_DIR}" ; then]
     AC_MSG_CHECKING([whether autoopts-config can be found])
     AC_ARG_WITH([autoopts-config],
        AC_HELP_STRING([--with-autoopts-config],
             [specify the config-info script]),
        [lo_cv_with_autoopts_config=${with_autoopts_config}],
        AC_CACHE_CHECK([whether autoopts-config is specified],
             [lo_cv_with_autoopts_config],
             [if autoopts-config --help 2>/dev/null 1>&2
        then lo_cv_with_autoopts_config=autoopts-config
        elif libopts-config --help 2>/dev/null 1>&2
        then lo_cv_with_autoopts_config=libopts-config
        else lo_cv_with_autoopts_config=no ; fi])
     ) # end of AC_ARG_WITH

     AC_CACHE_VAL([lo_cv_test_autoopts],[
        if test -z "${lo_cv_with_autoopts_config}" \
                -o X"${lo_cv_with_autoopts_config}" = Xno
        then
           if autoopts-config --help 2>/dev/null 1>&2
           then lo_cv_with_autoopts_config=autoopts-config
           elif libopts-config --help 2>/dev/null 1>&2
           then lo_cv_with_autoopts_config=libopts-config
           else lo_cv_with_autoopts_config=false ; fi
        fi
        lo_cv_test_autoopts=`
            ${lo_cv_with_autoopts_config} --libs` 2> /dev/null
        if test $? -ne 0 -o -z "${lo_cv_test_autoopts}"
        then lo_cv_test_autoopts=no ; fi
     ]) # end of CACHE_VAL
     AC_MSG_RESULT([${lo_cv_test_autoopts}])

     [if test "X${lo_cv_test_autoopts}" != Xno
     then
        LIBOPTS_LDADD="${lo_cv_test_autoopts}"
        LIBOPTS_CFLAGS="`${lo_cv_with_autoopts_config} --cflags`"
     else
        LIBOPTS_LDADD='$(top_builddir)/]AO_Libopts_Dir[/libopts.la'
        LIBOPTS_CFLAGS='-I$(top_srcdir)/]AO_Libopts_Dir['
        NEED_LIBOPTS_DIR=true
     fi
  fi # end of if test -z "${NEED_LIBOPTS_DIR}"
  if test -n "${LIBOPTS_BUILD_BLOCKED}" ; then
    NEED_LIBOPTS_DIR=''
  fi]
  AM_CONDITIONAL([NEED_LIBOPTS], [test -n "${NEED_LIBOPTS_DIR}"])
  AC_SUBST(LIBOPTS_LDADD)
  AC_SUBST(LIBOPTS_CFLAGS)
  AC_SUBST(LIBOPTS_DIR, AO_Libopts_Dir)
  m4_popdef([AO_Libopts_Dir])
[# end of AC_DEFUN of LIBOPTS_CHECK_COMMON]
])
dnl
dnl AC_CONFIG_FILES conditionalization requires using AM_COND_IF, however
dnl AM_COND_IF is new to Automake 1.11.  To use it on new Automake without
dnl requiring same, a fallback implementation for older Automake is provided.
dnl Note that disabling of AC_CONFIG_FILES requires Automake 1.11, this code
dnl is correct only in terms of m4sh generated script.
dnl
m4_ifndef([AM_COND_IF],
  [AC_DEFUN([AM_COND_IF], [
    if test -z "$$1_TRUE"; then :
      m4_n([$2])[]dnl
      m4_ifval([$3],[
    else
      $3
    ])dnl
    fi[]dnl
  ])dnl
])
dnl
AC_DEFUN([LIBOPTS_CHECK_NOBUILD], [
  m4_pushdef([AO_Libopts_Dir],
	      [ifelse($1, , [libopts], [$1])])
  LIBOPTS_BUILD_BLOCKED=true
  LIBOPTS_CHECK_COMMON(AO_Libopts_Dir)
  m4_popdef([AO_Libopts_Dir])dnl
# end of AC_DEFUN of LIBOPTS_CHECK_NOBUILD
])
dnl
AC_DEFUN([LIBOPTS_CHECK], [
  m4_pushdef([AO_Libopts_Dir],
	      [ifelse($1, , [libopts], [$1])])
  LIBOPTS_BUILD_BLOCKED=''
  LIBOPTS_CHECK_COMMON(AO_Libopts_Dir)
  AM_COND_IF([NEED_LIBOPTS], [
    INVOKE_LIBOPTS_MACROS
  ])
  AC_CONFIG_FILES(AO_Libopts_Dir/Makefile)
  m4_popdef([AO_Libopts_Dir])dnl
# end of AC_DEFUN of LIBOPTS_CHECK
])