summaryrefslogtreecommitdiff
path: root/m4/curl-reentrant.m4
blob: 4b619c3740052f382b9142b1e06b8f862c3cc0a9 (plain)
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
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
#***************************************************************************
#                                  _   _ ____  _
#  Project                     ___| | | |  _ \| |
#                             / __| | | | |_) | |
#                            | (__| |_| |  _ <| |___
#                             \___|\___/|_| \_\_____|
#
# Copyright (C) 1998 - 2009, Daniel Stenberg, <daniel@haxx.se>, et al.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at http://curl.haxx.se/docs/copyright.html.
#
# You may opt to use, copy, modify, merge, publish, distribute and/or sell
# copies of the Software, and permit persons to whom the Software is
# furnished to do so, under the terms of the COPYING file.
#
# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
# KIND, either express or implied.
#
# $Id$
#***************************************************************************

# File version for 'aclocal' use. Keep it a single number.
# serial 8

dnl Note 1
dnl ------
dnl None of the CURL_CHECK_NEED_REENTRANT_* macros shall use HAVE_FOO_H to
dnl conditionally include header files. These macros are used early in the
dnl configure process much before header file availability is known.


dnl CURL_CHECK_NEED_REENTRANT_ERRNO
dnl -------------------------------------------------
dnl Checks if the preprocessor _REENTRANT definition
dnl makes errno available as a preprocessor macro.

AC_DEFUN([CURL_CHECK_NEED_REENTRANT_ERRNO], [
  AC_COMPILE_IFELSE([
    AC_LANG_PROGRAM([[
#include <errno.h>
    ]],[[
      if(0 != errno)
        return 1;
    ]])
  ],[
    tmp_errno="yes"
  ],[
    tmp_errno="no"
  ])
  if test "$tmp_errno" = "yes"; then
    AC_COMPILE_IFELSE([
      AC_LANG_PROGRAM([[
#include <errno.h>
      ]],[[
#ifdef errno
        int dummy=1;
#else
        force compilation error
#endif
      ]])
    ],[
      tmp_errno="errno_macro_defined"
    ],[
      AC_COMPILE_IFELSE([
        AC_LANG_PROGRAM([[
#define _REENTRANT
#include <errno.h>
        ]],[[
#ifdef errno
          int dummy=1;
#else
          force compilation error
#endif
        ]])
      ],[
        tmp_errno="errno_macro_needs_reentrant"
        tmp_need_reentrant="yes"
      ])
    ])
  fi
])


dnl CURL_CHECK_NEED_REENTRANT_GMTIME_R
dnl -------------------------------------------------
dnl Checks if the preprocessor _REENTRANT definition
dnl makes function gmtime_r compiler visible.

AC_DEFUN([CURL_CHECK_NEED_REENTRANT_GMTIME_R], [
  AC_LINK_IFELSE([
    AC_LANG_FUNC_LINK_TRY([gmtime_r])
  ],[
    tmp_gmtime_r="yes"
  ],[
    tmp_gmtime_r="no"
  ])
  if test "$tmp_gmtime_r" = "yes"; then
    AC_EGREP_CPP([gmtime_r],[
#include <sys/types.h>
#include <time.h>
    ],[
      tmp_gmtime_r="proto_declared"
    ],[
      AC_EGREP_CPP([gmtime_r],[
#define _REENTRANT
#include <sys/types.h>
#include <time.h>
      ],[
        tmp_gmtime_r="proto_needs_reentrant"
        tmp_need_reentrant="yes"
      ])
    ])
  fi
])


dnl CURL_CHECK_NEED_REENTRANT_LOCALTIME_R
dnl -------------------------------------------------
dnl Checks if the preprocessor _REENTRANT definition
dnl makes function localtime_r compiler visible.

AC_DEFUN([CURL_CHECK_NEED_REENTRANT_LOCALTIME_R], [
  AC_LINK_IFELSE([
    AC_LANG_FUNC_LINK_TRY([localtime_r])
  ],[
    tmp_localtime_r="yes"
  ],[
    tmp_localtime_r="no"
  ])
  if test "$tmp_localtime_r" = "yes"; then
    AC_EGREP_CPP([localtime_r],[
#include <sys/types.h>
#include <time.h>
    ],[
      tmp_localtime_r="proto_declared"
    ],[
      AC_EGREP_CPP([localtime_r],[
#define _REENTRANT
#include <sys/types.h>
#include <time.h>
      ],[
        tmp_localtime_r="proto_needs_reentrant"
        tmp_need_reentrant="yes"
      ])
    ])
  fi
])


dnl CURL_CHECK_NEED_REENTRANT_STRERROR_R
dnl -------------------------------------------------
dnl Checks if the preprocessor _REENTRANT definition
dnl makes function strerror_r compiler visible.

AC_DEFUN([CURL_CHECK_NEED_REENTRANT_STRERROR_R], [
  AC_LINK_IFELSE([
    AC_LANG_FUNC_LINK_TRY([strerror_r])
  ],[
    tmp_strerror_r="yes"
  ],[
    tmp_strerror_r="no"
  ])
  if test "$tmp_strerror_r" = "yes"; then
    AC_EGREP_CPP([strerror_r],[
#include <sys/types.h>
#include <string.h>
    ],[
      tmp_strerror_r="proto_declared"
    ],[
      AC_EGREP_CPP([strerror_r],[
#define _REENTRANT
#include <sys/types.h>
#include <string.h>
      ],[
        tmp_strerror_r="proto_needs_reentrant"
        tmp_need_reentrant="yes"
      ])
    ])
  fi
])


dnl CURL_CHECK_NEED_REENTRANT_STRTOK_R
dnl -------------------------------------------------
dnl Checks if the preprocessor _REENTRANT definition
dnl makes function strtok_r compiler visible.

AC_DEFUN([CURL_CHECK_NEED_REENTRANT_STRTOK_R], [
  AC_LINK_IFELSE([
    AC_LANG_FUNC_LINK_TRY([strtok_r])
  ],[
    tmp_strtok_r="yes"
  ],[
    tmp_strtok_r="no"
  ])
  if test "$tmp_strtok_r" = "yes"; then
    AC_EGREP_CPP([strtok_r],[
#include <sys/types.h>
#include <string.h>
    ],[
      tmp_strtok_r="proto_declared"
    ],[
      AC_EGREP_CPP([strtok_r],[
#define _REENTRANT
#include <sys/types.h>
#include <string.h>
      ],[
        tmp_strtok_r="proto_needs_reentrant"
        tmp_need_reentrant="yes"
      ])
    ])
  fi
])


dnl CURL_CHECK_NEED_REENTRANT_INET_NTOA_R
dnl -------------------------------------------------
dnl Checks if the preprocessor _REENTRANT definition
dnl makes function inet_ntoa_r compiler visible.

AC_DEFUN([CURL_CHECK_NEED_REENTRANT_INET_NTOA_R], [
  AC_LINK_IFELSE([
    AC_LANG_FUNC_LINK_TRY([inet_ntoa_r])
  ],[
    tmp_inet_ntoa_r="yes"
  ],[
    tmp_inet_ntoa_r="no"
  ])
  if test "$tmp_inet_ntoa_r" = "yes"; then
    AC_EGREP_CPP([inet_ntoa_r],[
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
    ],[
      tmp_inet_ntoa_r="proto_declared"
    ],[
      AC_EGREP_CPP([inet_ntoa_r],[
#define _REENTRANT
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
      ],[
        tmp_inet_ntoa_r="proto_needs_reentrant"
        tmp_need_reentrant="yes"
      ])
    ])
  fi
])


dnl CURL_CHECK_NEED_REENTRANT_GETHOSTBYADDR_R
dnl -------------------------------------------------
dnl Checks if the preprocessor _REENTRANT definition
dnl makes function gethostbyaddr_r compiler visible.

AC_DEFUN([CURL_CHECK_NEED_REENTRANT_GETHOSTBYADDR_R], [
  AC_LINK_IFELSE([
    AC_LANG_FUNC_LINK_TRY([gethostbyaddr_r])
  ],[
    tmp_gethostbyaddr_r="yes"
  ],[
    tmp_gethostbyaddr_r="no"
  ])
  if test "$tmp_gethostbyaddr_r" = "yes"; then
    AC_EGREP_CPP([gethostbyaddr_r],[
#include <sys/types.h>
#include <netdb.h>
    ],[
      tmp_gethostbyaddr_r="proto_declared"
    ],[
      AC_EGREP_CPP([gethostbyaddr_r],[
#define _REENTRANT
#include <sys/types.h>
#include <netdb.h>
      ],[
        tmp_gethostbyaddr_r="proto_needs_reentrant"
        tmp_need_reentrant="yes"
      ])
    ])
  fi
])


dnl CURL_CHECK_NEED_REENTRANT_GETHOSTBYNAME_R
dnl -------------------------------------------------
dnl Checks if the preprocessor _REENTRANT definition
dnl makes function gethostbyname_r compiler visible.

AC_DEFUN([CURL_CHECK_NEED_REENTRANT_GETHOSTBYNAME_R], [
  AC_LINK_IFELSE([
    AC_LANG_FUNC_LINK_TRY([gethostbyname_r])
  ],[
    tmp_gethostbyname_r="yes"
  ],[
    tmp_gethostbyname_r="no"
  ])
  if test "$tmp_gethostbyname_r" = "yes"; then
    AC_EGREP_CPP([gethostbyname_r],[
#include <sys/types.h>
#include <netdb.h>
    ],[
      tmp_gethostbyname_r="proto_declared"
    ],[
      AC_EGREP_CPP([gethostbyname_r],[
#define _REENTRANT
#include <sys/types.h>
#include <netdb.h>
      ],[
        tmp_gethostbyname_r="proto_needs_reentrant"
        tmp_need_reentrant="yes"
      ])
    ])
  fi
])


dnl CURL_CHECK_NEED_REENTRANT_GETPROTOBYNAME_R
dnl -------------------------------------------------
dnl Checks if the preprocessor _REENTRANT definition
dnl makes function getprotobyname_r compiler visible.

AC_DEFUN([CURL_CHECK_NEED_REENTRANT_GETPROTOBYNAME_R], [
  AC_LINK_IFELSE([
    AC_LANG_FUNC_LINK_TRY([getprotobyname_r])
  ],[
    tmp_getprotobyname_r="yes"
  ],[
    tmp_getprotobyname_r="no"
  ])
  if test "$tmp_getprotobyname_r" = "yes"; then
    AC_EGREP_CPP([getprotobyname_r],[
#include <sys/types.h>
#include <netdb.h>
    ],[
      tmp_getprotobyname_r="proto_declared"
    ],[
      AC_EGREP_CPP([getprotobyname_r],[
#define _REENTRANT
#include <sys/types.h>
#include <netdb.h>
      ],[
        tmp_getprotobyname_r="proto_needs_reentrant"
        tmp_need_reentrant="yes"
      ])
    ])
  fi
])


dnl CURL_CHECK_NEED_REENTRANT_GETSERVBYPORT_R
dnl -------------------------------------------------
dnl Checks if the preprocessor _REENTRANT definition
dnl makes function getservbyport_r compiler visible.

AC_DEFUN([CURL_CHECK_NEED_REENTRANT_GETSERVBYPORT_R], [
  AC_LINK_IFELSE([
    AC_LANG_FUNC_LINK_TRY([getservbyport_r])
  ],[
    tmp_getservbyport_r="yes"
  ],[
    tmp_getservbyport_r="no"
  ])
  if test "$tmp_getservbyport_r" = "yes"; then
    AC_EGREP_CPP([getservbyport_r],[
#include <sys/types.h>
#include <netdb.h>
    ],[
      tmp_getservbyport_r="proto_declared"
    ],[
      AC_EGREP_CPP([getservbyport_r],[
#define _REENTRANT
#include <sys/types.h>
#include <netdb.h>
      ],[
        tmp_getservbyport_r="proto_needs_reentrant"
        tmp_need_reentrant="yes"
      ])
    ])
  fi
])


dnl CURL_CHECK_NEED_REENTRANT_FUNCTIONS_R
dnl -------------------------------------------------
dnl Checks if the preprocessor _REENTRANT definition
dnl makes several _r functions compiler visible.
dnl Internal macro for CURL_CONFIGURE_REENTRANT.

AC_DEFUN([CURL_CHECK_NEED_REENTRANT_FUNCTIONS_R], [
  if test "$tmp_need_reentrant" = "no"; then
    CURL_CHECK_NEED_REENTRANT_GMTIME_R
  fi
  if test "$tmp_need_reentrant" = "no"; then
    CURL_CHECK_NEED_REENTRANT_LOCALTIME_R
  fi
  if test "$tmp_need_reentrant" = "no"; then
    CURL_CHECK_NEED_REENTRANT_STRERROR_R
  fi
  if test "$tmp_need_reentrant" = "no"; then
    CURL_CHECK_NEED_REENTRANT_STRTOK_R
  fi
  if test "$tmp_need_reentrant" = "no"; then
    CURL_CHECK_NEED_REENTRANT_INET_NTOA_R
  fi
  if test "$tmp_need_reentrant" = "no"; then
    CURL_CHECK_NEED_REENTRANT_GETHOSTBYADDR_R
  fi
  if test "$tmp_need_reentrant" = "no"; then
    CURL_CHECK_NEED_REENTRANT_GETHOSTBYNAME_R
  fi
  if test "$tmp_need_reentrant" = "no"; then
    CURL_CHECK_NEED_REENTRANT_GETPROTOBYNAME_R
  fi
  if test "$tmp_need_reentrant" = "no"; then
    CURL_CHECK_NEED_REENTRANT_GETSERVBYPORT_R
  fi
])


dnl CURL_CHECK_NEED_REENTRANT_SYSTEM
dnl -------------------------------------------------
dnl Checks if the preprocessor _REENTRANT definition
dnl must be unconditionally done for this platform.
dnl Internal macro for CURL_CONFIGURE_REENTRANT.

AC_DEFUN([CURL_CHECK_NEED_REENTRANT_SYSTEM], [
  case $host_os in
    solaris*)
      tmp_need_reentrant="yes"
      ;;
    *)
      tmp_need_reentrant="no"
      ;;
  esac
])


dnl CURL_CHECK_NEED_THREAD_SAFE_SYSTEM
dnl -------------------------------------------------
dnl Checks if the preprocessor _THREAD_SAFE definition
dnl must be unconditionally done for this platform.
dnl Internal macro for CURL_CONFIGURE_THREAD_SAFE.

AC_DEFUN([CURL_CHECK_NEED_THREAD_SAFE_SYSTEM], [
  case $host_os in
    aix[[123]].* | aix4.[[012]].*)
      dnl aix 4.2 and older
      tmp_need_thread_safe="no"
      ;;
    aix*)
      dnl AIX 4.3 and newer
      tmp_need_thread_safe="yes"
      ;;
    *)
      tmp_need_thread_safe="no"
      ;;
  esac
])


dnl CURL_CONFIGURE_FROM_NOW_ON_WITH_REENTRANT
dnl -------------------------------------------------
dnl This macro ensures that configuration tests done
dnl after this will execute with preprocessor symbol
dnl _REENTRANT defined. This macro also ensures that
dnl the generated config file defines NEED_REENTRANT
dnl and that in turn setup.h will define _REENTRANT.
dnl Internal macro for CURL_CONFIGURE_REENTRANT.

AC_DEFUN([CURL_CONFIGURE_FROM_NOW_ON_WITH_REENTRANT], [
AC_DEFINE(NEED_REENTRANT, 1,
  [Define to 1 if _REENTRANT preprocessor symbol must be defined.])
cat >>confdefs.h <<_EOF
#ifndef _REENTRANT
#  define _REENTRANT
#endif
_EOF
])


dnl CURL_CONFIGURE_FROM_NOW_ON_WITH_THREAD_SAFE
dnl -------------------------------------------------
dnl This macro ensures that configuration tests done
dnl after this will execute with preprocessor symbol
dnl _THREAD_SAFE defined. This macro also ensures that
dnl the generated config file defines NEED_THREAD_SAFE
dnl and that in turn setup.h will define _THREAD_SAFE.
dnl Internal macro for CURL_CONFIGURE_THREAD_SAFE.

AC_DEFUN([CURL_CONFIGURE_FROM_NOW_ON_WITH_THREAD_SAFE], [
AC_DEFINE(NEED_THREAD_SAFE, 1,
  [Define to 1 if _THREAD_SAFE preprocessor symbol must be defined.])
cat >>confdefs.h <<_EOF
#ifndef _THREAD_SAFE
#  define _THREAD_SAFE
#endif
_EOF
])


dnl CURL_CONFIGURE_REENTRANT
dnl -------------------------------------------------
dnl This first checks if the preprocessor _REENTRANT
dnl symbol is already defined. If it isn't currently
dnl defined a set of checks are performed to verify
dnl if its definition is required to make visible to
dnl the compiler a set of *_r functions. Finally, if
dnl _REENTRANT is already defined or needed it takes
dnl care of making adjustments necessary to ensure
dnl that it is defined equally for further configure
dnl tests and generated config file.

AC_DEFUN([CURL_CONFIGURE_REENTRANT], [
  AC_PREREQ([2.50])dnl
  #
  AC_MSG_CHECKING([if _REENTRANT is already defined])
  AC_COMPILE_IFELSE([
    AC_LANG_PROGRAM([[
    ]],[[
#ifdef _REENTRANT
      int dummy=1;
#else
      force compilation error
#endif
    ]])
  ],[
    AC_MSG_RESULT([yes])
    tmp_reentrant_initially_defined="yes"
  ],[
    AC_MSG_RESULT([no])
    tmp_reentrant_initially_defined="no"
  ])
  #
  if test "$tmp_reentrant_initially_defined" = "no"; then
    AC_MSG_CHECKING([if _REENTRANT is actually needed])
    CURL_CHECK_NEED_REENTRANT_SYSTEM
    if test "$tmp_need_reentrant" = "no"; then
      CURL_CHECK_NEED_REENTRANT_ERRNO
    fi
    if test "$tmp_need_reentrant" = "no"; then
      CURL_CHECK_NEED_REENTRANT_FUNCTIONS_R
    fi
    if test "$tmp_need_reentrant" = "yes"; then
      AC_MSG_RESULT([yes])
    else
      AC_MSG_RESULT([no])
    fi
  fi
  #
  AC_MSG_CHECKING([if _REENTRANT is onwards defined])
  if test "$tmp_reentrant_initially_defined" = "yes" ||
    test "$tmp_need_reentrant" = "yes"; then
    CURL_CONFIGURE_FROM_NOW_ON_WITH_REENTRANT
    AC_MSG_RESULT([yes])
  else
    AC_MSG_RESULT([no])
  fi
  #
])


dnl CURL_CONFIGURE_THREAD_SAFE
dnl -------------------------------------------------
dnl This first checks if the preprocessor _THREAD_SAFE
dnl symbol is already defined. If it isn't currently
dnl defined a set of checks are performed to verify
dnl if its definition is required. Finally, if
dnl _THREAD_SAFE is already defined or needed it takes
dnl care of making adjustments necessary to ensure
dnl that it is defined equally for further configure
dnl tests and generated config file.

AC_DEFUN([CURL_CONFIGURE_THREAD_SAFE], [
  AC_PREREQ([2.50])dnl
  #
  AC_MSG_CHECKING([if _THREAD_SAFE is already defined])
  AC_COMPILE_IFELSE([
    AC_LANG_PROGRAM([[
    ]],[[
#ifdef _THREAD_SAFE
      int dummy=1;
#else
      force compilation error
#endif
    ]])
  ],[
    AC_MSG_RESULT([yes])
    tmp_thread_safe_initially_defined="yes"
  ],[
    AC_MSG_RESULT([no])
    tmp_thread_safe_initially_defined="no"
  ])
  #
  if test "$tmp_thread_safe_initially_defined" = "no"; then
    AC_MSG_CHECKING([if _THREAD_SAFE is actually needed])
    CURL_CHECK_NEED_THREAD_SAFE_SYSTEM
    if test "$tmp_need_thread_safe" = "yes"; then
      AC_MSG_RESULT([yes])
    else
      AC_MSG_RESULT([no])
    fi
  fi
  #
  AC_MSG_CHECKING([if _THREAD_SAFE is onwards defined])
  if test "$tmp_thread_safe_initially_defined" = "yes" ||
    test "$tmp_need_thread_safe" = "yes"; then
    CURL_CONFIGURE_FROM_NOW_ON_WITH_THREAD_SAFE
    AC_MSG_RESULT([yes])
  else
    AC_MSG_RESULT([no])
  fi
  #
])