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8690e634 JK |
1 | # mbrtowc.m4 serial 25 |
2 | dnl Copyright (C) 2001-2002, 2004-2005, 2008-2012 Free Software Foundation, | |
3 | dnl Inc. | |
4 | dnl This file is free software; the Free Software Foundation | |
5 | dnl gives unlimited permission to copy and/or distribute it, | |
6 | dnl with or without modifications, as long as this notice is preserved. | |
7 | ||
8 | AC_DEFUN([gl_FUNC_MBRTOWC], | |
9 | [ | |
10 | AC_REQUIRE([gl_WCHAR_H_DEFAULTS]) | |
11 | ||
12 | AC_REQUIRE([AC_TYPE_MBSTATE_T]) | |
13 | gl_MBSTATE_T_BROKEN | |
14 | ||
15 | AC_CHECK_FUNCS_ONCE([mbrtowc]) | |
16 | if test $ac_cv_func_mbrtowc = no; then | |
17 | HAVE_MBRTOWC=0 | |
18 | AC_CHECK_DECLS([mbrtowc],,, [[ | |
19 | /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before | |
20 | <wchar.h>. | |
21 | BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be | |
22 | included before <wchar.h>. */ | |
23 | #include <stddef.h> | |
24 | #include <stdio.h> | |
25 | #include <time.h> | |
26 | #include <wchar.h> | |
27 | ]]) | |
28 | if test $ac_cv_have_decl_mbrtowc = yes; then | |
29 | dnl On Minix 3.1.8, the system's <wchar.h> declares mbrtowc() although | |
30 | dnl it does not have the function. Avoid a collision with gnulib's | |
31 | dnl replacement. | |
32 | REPLACE_MBRTOWC=1 | |
33 | fi | |
34 | else | |
35 | if test $REPLACE_MBSTATE_T = 1; then | |
36 | REPLACE_MBRTOWC=1 | |
37 | else | |
38 | gl_MBRTOWC_NULL_ARG1 | |
39 | gl_MBRTOWC_NULL_ARG2 | |
40 | gl_MBRTOWC_RETVAL | |
41 | gl_MBRTOWC_NUL_RETVAL | |
42 | case "$gl_cv_func_mbrtowc_null_arg1" in | |
43 | *yes) ;; | |
44 | *) AC_DEFINE([MBRTOWC_NULL_ARG1_BUG], [1], | |
45 | [Define if the mbrtowc function has the NULL pwc argument bug.]) | |
46 | REPLACE_MBRTOWC=1 | |
47 | ;; | |
48 | esac | |
49 | case "$gl_cv_func_mbrtowc_null_arg2" in | |
50 | *yes) ;; | |
51 | *) AC_DEFINE([MBRTOWC_NULL_ARG2_BUG], [1], | |
52 | [Define if the mbrtowc function has the NULL string argument bug.]) | |
53 | REPLACE_MBRTOWC=1 | |
54 | ;; | |
55 | esac | |
56 | case "$gl_cv_func_mbrtowc_retval" in | |
57 | *yes) ;; | |
58 | *) AC_DEFINE([MBRTOWC_RETVAL_BUG], [1], | |
59 | [Define if the mbrtowc function returns a wrong return value.]) | |
60 | REPLACE_MBRTOWC=1 | |
61 | ;; | |
62 | esac | |
63 | case "$gl_cv_func_mbrtowc_nul_retval" in | |
64 | *yes) ;; | |
65 | *) AC_DEFINE([MBRTOWC_NUL_RETVAL_BUG], [1], | |
66 | [Define if the mbrtowc function does not return 0 for a NUL character.]) | |
67 | REPLACE_MBRTOWC=1 | |
68 | ;; | |
69 | esac | |
70 | fi | |
71 | fi | |
72 | ]) | |
73 | ||
74 | dnl Test whether mbsinit() and mbrtowc() need to be overridden in a way that | |
75 | dnl redefines the semantics of the given mbstate_t type. | |
76 | dnl Result is REPLACE_MBSTATE_T. | |
77 | dnl When this is set to 1, we replace both mbsinit() and mbrtowc(), in order to | |
78 | dnl avoid inconsistencies. | |
79 | ||
80 | AC_DEFUN([gl_MBSTATE_T_BROKEN], | |
81 | [ | |
82 | AC_REQUIRE([gl_WCHAR_H_DEFAULTS]) | |
83 | ||
84 | AC_REQUIRE([AC_TYPE_MBSTATE_T]) | |
85 | AC_CHECK_FUNCS_ONCE([mbsinit]) | |
86 | AC_CHECK_FUNCS_ONCE([mbrtowc]) | |
87 | if test $ac_cv_func_mbsinit = yes && test $ac_cv_func_mbrtowc = yes; then | |
88 | gl_MBRTOWC_INCOMPLETE_STATE | |
89 | gl_MBRTOWC_SANITYCHECK | |
90 | REPLACE_MBSTATE_T=0 | |
91 | case "$gl_cv_func_mbrtowc_incomplete_state" in | |
92 | *yes) ;; | |
93 | *) REPLACE_MBSTATE_T=1 ;; | |
94 | esac | |
95 | case "$gl_cv_func_mbrtowc_sanitycheck" in | |
96 | *yes) ;; | |
97 | *) REPLACE_MBSTATE_T=1 ;; | |
98 | esac | |
99 | else | |
100 | REPLACE_MBSTATE_T=1 | |
101 | fi | |
102 | ]) | |
103 | ||
104 | dnl Test whether mbrtowc puts the state into non-initial state when parsing an | |
105 | dnl incomplete multibyte character. | |
106 | dnl Result is gl_cv_func_mbrtowc_incomplete_state. | |
107 | ||
108 | AC_DEFUN([gl_MBRTOWC_INCOMPLETE_STATE], | |
109 | [ | |
110 | AC_REQUIRE([AC_PROG_CC]) | |
111 | AC_REQUIRE([gt_LOCALE_JA]) | |
112 | AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles | |
113 | AC_CACHE_CHECK([whether mbrtowc handles incomplete characters], | |
114 | [gl_cv_func_mbrtowc_incomplete_state], | |
115 | [ | |
116 | dnl Initial guess, used when cross-compiling or when no suitable locale | |
117 | dnl is present. | |
118 | changequote(,)dnl | |
119 | case "$host_os" in | |
120 | # Guess no on AIX and OSF/1. | |
121 | aix* | osf*) gl_cv_func_mbrtowc_incomplete_state="guessing no" ;; | |
122 | # Guess yes otherwise. | |
123 | *) gl_cv_func_mbrtowc_incomplete_state="guessing yes" ;; | |
124 | esac | |
125 | changequote([,])dnl | |
126 | if test $LOCALE_JA != none; then | |
127 | AC_RUN_IFELSE( | |
128 | [AC_LANG_SOURCE([[ | |
129 | #include <locale.h> | |
130 | #include <string.h> | |
131 | /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before | |
132 | <wchar.h>. | |
133 | BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be | |
134 | included before <wchar.h>. */ | |
135 | #include <stddef.h> | |
136 | #include <stdio.h> | |
137 | #include <time.h> | |
138 | #include <wchar.h> | |
139 | int main () | |
140 | { | |
141 | if (setlocale (LC_ALL, "$LOCALE_JA") != NULL) | |
142 | { | |
143 | const char input[] = "B\217\253\344\217\251\316er"; /* "Büßer" */ | |
144 | mbstate_t state; | |
145 | wchar_t wc; | |
146 | ||
147 | memset (&state, '\0', sizeof (mbstate_t)); | |
148 | if (mbrtowc (&wc, input + 1, 1, &state) == (size_t)(-2)) | |
149 | if (mbsinit (&state)) | |
150 | return 1; | |
151 | } | |
152 | return 0; | |
153 | }]])], | |
154 | [gl_cv_func_mbrtowc_incomplete_state=yes], | |
155 | [gl_cv_func_mbrtowc_incomplete_state=no], | |
156 | [:]) | |
157 | fi | |
158 | ]) | |
159 | ]) | |
160 | ||
161 | dnl Test whether mbrtowc works not worse than mbtowc. | |
162 | dnl Result is gl_cv_func_mbrtowc_sanitycheck. | |
163 | ||
164 | AC_DEFUN([gl_MBRTOWC_SANITYCHECK], | |
165 | [ | |
166 | AC_REQUIRE([AC_PROG_CC]) | |
167 | AC_REQUIRE([gt_LOCALE_ZH_CN]) | |
168 | AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles | |
169 | AC_CACHE_CHECK([whether mbrtowc works as well as mbtowc], | |
170 | [gl_cv_func_mbrtowc_sanitycheck], | |
171 | [ | |
172 | dnl Initial guess, used when cross-compiling or when no suitable locale | |
173 | dnl is present. | |
174 | changequote(,)dnl | |
175 | case "$host_os" in | |
176 | # Guess no on Solaris 8. | |
177 | solaris2.8) gl_cv_func_mbrtowc_sanitycheck="guessing no" ;; | |
178 | # Guess yes otherwise. | |
179 | *) gl_cv_func_mbrtowc_sanitycheck="guessing yes" ;; | |
180 | esac | |
181 | changequote([,])dnl | |
182 | if test $LOCALE_ZH_CN != none; then | |
183 | AC_RUN_IFELSE( | |
184 | [AC_LANG_SOURCE([[ | |
185 | #include <locale.h> | |
186 | #include <stdlib.h> | |
187 | #include <string.h> | |
188 | /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before | |
189 | <wchar.h>. | |
190 | BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be | |
191 | included before <wchar.h>. */ | |
192 | #include <stddef.h> | |
193 | #include <stdio.h> | |
194 | #include <time.h> | |
195 | #include <wchar.h> | |
196 | int main () | |
197 | { | |
198 | /* This fails on Solaris 8: | |
199 | mbrtowc returns 2, and sets wc to 0x00F0. | |
200 | mbtowc returns 4 (correct) and sets wc to 0x5EDC. */ | |
201 | if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL) | |
202 | { | |
203 | char input[] = "B\250\271\201\060\211\070er"; /* "Büßer" */ | |
204 | mbstate_t state; | |
205 | wchar_t wc; | |
206 | ||
207 | memset (&state, '\0', sizeof (mbstate_t)); | |
208 | if (mbrtowc (&wc, input + 3, 6, &state) != 4 | |
209 | && mbtowc (&wc, input + 3, 6) == 4) | |
210 | return 1; | |
211 | } | |
212 | return 0; | |
213 | }]])], | |
214 | [gl_cv_func_mbrtowc_sanitycheck=yes], | |
215 | [gl_cv_func_mbrtowc_sanitycheck=no], | |
216 | [:]) | |
217 | fi | |
218 | ]) | |
219 | ]) | |
220 | ||
221 | dnl Test whether mbrtowc supports a NULL pwc argument correctly. | |
222 | dnl Result is gl_cv_func_mbrtowc_null_arg1. | |
223 | ||
224 | AC_DEFUN([gl_MBRTOWC_NULL_ARG1], | |
225 | [ | |
226 | AC_REQUIRE([AC_PROG_CC]) | |
227 | AC_REQUIRE([gt_LOCALE_FR_UTF8]) | |
228 | AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles | |
229 | AC_CACHE_CHECK([whether mbrtowc handles a NULL pwc argument], | |
230 | [gl_cv_func_mbrtowc_null_arg1], | |
231 | [ | |
232 | dnl Initial guess, used when cross-compiling or when no suitable locale | |
233 | dnl is present. | |
234 | changequote(,)dnl | |
235 | case "$host_os" in | |
236 | # Guess no on Solaris. | |
237 | solaris*) gl_cv_func_mbrtowc_null_arg1="guessing no" ;; | |
238 | # Guess yes otherwise. | |
239 | *) gl_cv_func_mbrtowc_null_arg1="guessing yes" ;; | |
240 | esac | |
241 | changequote([,])dnl | |
242 | if test $LOCALE_FR_UTF8 != none; then | |
243 | AC_RUN_IFELSE( | |
244 | [AC_LANG_SOURCE([[ | |
245 | #include <locale.h> | |
246 | #include <stdlib.h> | |
247 | #include <string.h> | |
248 | /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before | |
249 | <wchar.h>. | |
250 | BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be | |
251 | included before <wchar.h>. */ | |
252 | #include <stddef.h> | |
253 | #include <stdio.h> | |
254 | #include <time.h> | |
255 | #include <wchar.h> | |
256 | int main () | |
257 | { | |
258 | int result = 0; | |
259 | ||
260 | if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL) | |
261 | { | |
262 | char input[] = "\303\237er"; | |
263 | mbstate_t state; | |
264 | wchar_t wc; | |
265 | size_t ret; | |
266 | ||
267 | memset (&state, '\0', sizeof (mbstate_t)); | |
268 | wc = (wchar_t) 0xBADFACE; | |
269 | ret = mbrtowc (&wc, input, 5, &state); | |
270 | if (ret != 2) | |
271 | result |= 1; | |
272 | if (!mbsinit (&state)) | |
273 | result |= 2; | |
274 | ||
275 | memset (&state, '\0', sizeof (mbstate_t)); | |
276 | ret = mbrtowc (NULL, input, 5, &state); | |
277 | if (ret != 2) /* Solaris 7 fails here: ret is -1. */ | |
278 | result |= 4; | |
279 | if (!mbsinit (&state)) | |
280 | result |= 8; | |
281 | } | |
282 | return result; | |
283 | }]])], | |
284 | [gl_cv_func_mbrtowc_null_arg1=yes], | |
285 | [gl_cv_func_mbrtowc_null_arg1=no], | |
286 | [:]) | |
287 | fi | |
288 | ]) | |
289 | ]) | |
290 | ||
291 | dnl Test whether mbrtowc supports a NULL string argument correctly. | |
292 | dnl Result is gl_cv_func_mbrtowc_null_arg2. | |
293 | ||
294 | AC_DEFUN([gl_MBRTOWC_NULL_ARG2], | |
295 | [ | |
296 | AC_REQUIRE([AC_PROG_CC]) | |
297 | AC_REQUIRE([gt_LOCALE_FR_UTF8]) | |
298 | AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles | |
299 | AC_CACHE_CHECK([whether mbrtowc handles a NULL string argument], | |
300 | [gl_cv_func_mbrtowc_null_arg2], | |
301 | [ | |
302 | dnl Initial guess, used when cross-compiling or when no suitable locale | |
303 | dnl is present. | |
304 | changequote(,)dnl | |
305 | case "$host_os" in | |
306 | # Guess no on OSF/1. | |
307 | osf*) gl_cv_func_mbrtowc_null_arg2="guessing no" ;; | |
308 | # Guess yes otherwise. | |
309 | *) gl_cv_func_mbrtowc_null_arg2="guessing yes" ;; | |
310 | esac | |
311 | changequote([,])dnl | |
312 | if test $LOCALE_FR_UTF8 != none; then | |
313 | AC_RUN_IFELSE( | |
314 | [AC_LANG_SOURCE([[ | |
315 | #include <locale.h> | |
316 | #include <string.h> | |
317 | /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before | |
318 | <wchar.h>. | |
319 | BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be | |
320 | included before <wchar.h>. */ | |
321 | #include <stddef.h> | |
322 | #include <stdio.h> | |
323 | #include <time.h> | |
324 | #include <wchar.h> | |
325 | int main () | |
326 | { | |
327 | if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL) | |
328 | { | |
329 | mbstate_t state; | |
330 | wchar_t wc; | |
331 | int ret; | |
332 | ||
333 | memset (&state, '\0', sizeof (mbstate_t)); | |
334 | wc = (wchar_t) 0xBADFACE; | |
335 | mbrtowc (&wc, NULL, 5, &state); | |
336 | /* Check that wc was not modified. */ | |
337 | if (wc != (wchar_t) 0xBADFACE) | |
338 | return 1; | |
339 | } | |
340 | return 0; | |
341 | }]])], | |
342 | [gl_cv_func_mbrtowc_null_arg2=yes], | |
343 | [gl_cv_func_mbrtowc_null_arg2=no], | |
344 | [:]) | |
345 | fi | |
346 | ]) | |
347 | ]) | |
348 | ||
349 | dnl Test whether mbrtowc, when parsing the end of a multibyte character, | |
350 | dnl correctly returns the number of bytes that were needed to complete the | |
351 | dnl character (not the total number of bytes of the multibyte character). | |
352 | dnl Result is gl_cv_func_mbrtowc_retval. | |
353 | ||
354 | AC_DEFUN([gl_MBRTOWC_RETVAL], | |
355 | [ | |
356 | AC_REQUIRE([AC_PROG_CC]) | |
357 | AC_REQUIRE([gt_LOCALE_FR_UTF8]) | |
358 | AC_REQUIRE([gt_LOCALE_JA]) | |
359 | AC_REQUIRE([AC_CANONICAL_HOST]) | |
360 | AC_CACHE_CHECK([whether mbrtowc has a correct return value], | |
361 | [gl_cv_func_mbrtowc_retval], | |
362 | [ | |
363 | dnl Initial guess, used when cross-compiling or when no suitable locale | |
364 | dnl is present. | |
365 | changequote(,)dnl | |
366 | case "$host_os" in | |
367 | # Guess no on HP-UX, Solaris, native Windows. | |
368 | hpux* | solaris* | mingw*) gl_cv_func_mbrtowc_retval="guessing no" ;; | |
369 | # Guess yes otherwise. | |
370 | *) gl_cv_func_mbrtowc_retval="guessing yes" ;; | |
371 | esac | |
372 | changequote([,])dnl | |
373 | if test $LOCALE_FR_UTF8 != none || test $LOCALE_JA != none \ | |
374 | || { case "$host_os" in mingw*) true;; *) false;; esac; }; then | |
375 | AC_RUN_IFELSE( | |
376 | [AC_LANG_SOURCE([[ | |
377 | #include <locale.h> | |
378 | #include <string.h> | |
379 | /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before | |
380 | <wchar.h>. | |
381 | BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be | |
382 | included before <wchar.h>. */ | |
383 | #include <stddef.h> | |
384 | #include <stdio.h> | |
385 | #include <time.h> | |
386 | #include <wchar.h> | |
387 | int main () | |
388 | { | |
389 | int result = 0; | |
390 | int found_some_locale = 0; | |
391 | /* This fails on Solaris. */ | |
392 | if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL) | |
393 | { | |
394 | char input[] = "B\303\274\303\237er"; /* "Büßer" */ | |
395 | mbstate_t state; | |
396 | wchar_t wc; | |
397 | ||
398 | memset (&state, '\0', sizeof (mbstate_t)); | |
399 | if (mbrtowc (&wc, input + 1, 1, &state) == (size_t)(-2)) | |
400 | { | |
401 | input[1] = '\0'; | |
402 | if (mbrtowc (&wc, input + 2, 5, &state) != 1) | |
403 | result |= 1; | |
404 | } | |
405 | found_some_locale = 1; | |
406 | } | |
407 | /* This fails on HP-UX 11.11. */ | |
408 | if (setlocale (LC_ALL, "$LOCALE_JA") != NULL) | |
409 | { | |
410 | char input[] = "B\217\253\344\217\251\316er"; /* "Büßer" */ | |
411 | mbstate_t state; | |
412 | wchar_t wc; | |
413 | ||
414 | memset (&state, '\0', sizeof (mbstate_t)); | |
415 | if (mbrtowc (&wc, input + 1, 1, &state) == (size_t)(-2)) | |
416 | { | |
417 | input[1] = '\0'; | |
418 | if (mbrtowc (&wc, input + 2, 5, &state) != 2) | |
419 | result |= 2; | |
420 | } | |
421 | found_some_locale = 1; | |
422 | } | |
423 | /* This fails on native Windows. */ | |
424 | if (setlocale (LC_ALL, "Japanese_Japan.932") != NULL) | |
425 | { | |
426 | char input[] = "<\223\372\226\173\214\352>"; /* "<日本語>" */ | |
427 | mbstate_t state; | |
428 | wchar_t wc; | |
429 | ||
430 | memset (&state, '\0', sizeof (mbstate_t)); | |
431 | if (mbrtowc (&wc, input + 3, 1, &state) == (size_t)(-2)) | |
432 | { | |
433 | input[3] = '\0'; | |
434 | if (mbrtowc (&wc, input + 4, 4, &state) != 1) | |
435 | result |= 4; | |
436 | } | |
437 | found_some_locale = 1; | |
438 | } | |
439 | if (setlocale (LC_ALL, "Chinese_Taiwan.950") != NULL) | |
440 | { | |
441 | char input[] = "<\244\351\245\273\273\171>"; /* "<日本語>" */ | |
442 | mbstate_t state; | |
443 | wchar_t wc; | |
444 | ||
445 | memset (&state, '\0', sizeof (mbstate_t)); | |
446 | if (mbrtowc (&wc, input + 3, 1, &state) == (size_t)(-2)) | |
447 | { | |
448 | input[3] = '\0'; | |
449 | if (mbrtowc (&wc, input + 4, 4, &state) != 1) | |
450 | result |= 8; | |
451 | } | |
452 | found_some_locale = 1; | |
453 | } | |
454 | if (setlocale (LC_ALL, "Chinese_China.936") != NULL) | |
455 | { | |
456 | char input[] = "<\310\325\261\276\325\132>"; /* "<日本語>" */ | |
457 | mbstate_t state; | |
458 | wchar_t wc; | |
459 | ||
460 | memset (&state, '\0', sizeof (mbstate_t)); | |
461 | if (mbrtowc (&wc, input + 3, 1, &state) == (size_t)(-2)) | |
462 | { | |
463 | input[3] = '\0'; | |
464 | if (mbrtowc (&wc, input + 4, 4, &state) != 1) | |
465 | result |= 16; | |
466 | } | |
467 | found_some_locale = 1; | |
468 | } | |
469 | return (found_some_locale ? result : 77); | |
470 | }]])], | |
471 | [gl_cv_func_mbrtowc_retval=yes], | |
472 | [if test $? != 77; then | |
473 | gl_cv_func_mbrtowc_retval=no | |
474 | fi | |
475 | ], | |
476 | [:]) | |
477 | fi | |
478 | ]) | |
479 | ]) | |
480 | ||
481 | dnl Test whether mbrtowc, when parsing a NUL character, correctly returns 0. | |
482 | dnl Result is gl_cv_func_mbrtowc_nul_retval. | |
483 | ||
484 | AC_DEFUN([gl_MBRTOWC_NUL_RETVAL], | |
485 | [ | |
486 | AC_REQUIRE([AC_PROG_CC]) | |
487 | AC_REQUIRE([gt_LOCALE_ZH_CN]) | |
488 | AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles | |
489 | AC_CACHE_CHECK([whether mbrtowc returns 0 when parsing a NUL character], | |
490 | [gl_cv_func_mbrtowc_nul_retval], | |
491 | [ | |
492 | dnl Initial guess, used when cross-compiling or when no suitable locale | |
493 | dnl is present. | |
494 | changequote(,)dnl | |
495 | case "$host_os" in | |
496 | # Guess no on Solaris 8 and 9. | |
497 | solaris2.[89]) gl_cv_func_mbrtowc_nul_retval="guessing no" ;; | |
498 | # Guess yes otherwise. | |
499 | *) gl_cv_func_mbrtowc_nul_retval="guessing yes" ;; | |
500 | esac | |
501 | changequote([,])dnl | |
502 | if test $LOCALE_ZH_CN != none; then | |
503 | AC_RUN_IFELSE( | |
504 | [AC_LANG_SOURCE([[ | |
505 | #include <locale.h> | |
506 | #include <string.h> | |
507 | /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before | |
508 | <wchar.h>. | |
509 | BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be | |
510 | included before <wchar.h>. */ | |
511 | #include <stddef.h> | |
512 | #include <stdio.h> | |
513 | #include <time.h> | |
514 | #include <wchar.h> | |
515 | int main () | |
516 | { | |
517 | /* This fails on Solaris 8 and 9. */ | |
518 | if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL) | |
519 | { | |
520 | mbstate_t state; | |
521 | wchar_t wc; | |
522 | ||
523 | memset (&state, '\0', sizeof (mbstate_t)); | |
524 | if (mbrtowc (&wc, "", 1, &state) != 0) | |
525 | return 1; | |
526 | } | |
527 | return 0; | |
528 | }]])], | |
529 | [gl_cv_func_mbrtowc_nul_retval=yes], | |
530 | [gl_cv_func_mbrtowc_nul_retval=no], | |
531 | [:]) | |
532 | fi | |
533 | ]) | |
534 | ]) | |
535 | ||
536 | # Prerequisites of lib/mbrtowc.c. | |
537 | AC_DEFUN([gl_PREREQ_MBRTOWC], [ | |
538 | : | |
539 | ]) | |
540 | ||
541 | ||
542 | dnl From Paul Eggert | |
543 | ||
544 | dnl This is an override of an autoconf macro. | |
545 | ||
546 | AC_DEFUN([AC_FUNC_MBRTOWC], | |
547 | [ | |
548 | dnl Same as AC_FUNC_MBRTOWC in autoconf-2.60. | |
549 | AC_CACHE_CHECK([whether mbrtowc and mbstate_t are properly declared], | |
550 | gl_cv_func_mbrtowc, | |
551 | [AC_LINK_IFELSE( | |
552 | [AC_LANG_PROGRAM( | |
553 | [[/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be | |
554 | included before <wchar.h>. | |
555 | BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> | |
556 | must be included before <wchar.h>. */ | |
557 | #include <stddef.h> | |
558 | #include <stdio.h> | |
559 | #include <time.h> | |
560 | #include <wchar.h>]], | |
561 | [[wchar_t wc; | |
562 | char const s[] = ""; | |
563 | size_t n = 1; | |
564 | mbstate_t state; | |
565 | return ! (sizeof state && (mbrtowc) (&wc, s, n, &state));]])], | |
566 | gl_cv_func_mbrtowc=yes, | |
567 | gl_cv_func_mbrtowc=no)]) | |
568 | if test $gl_cv_func_mbrtowc = yes; then | |
569 | AC_DEFINE([HAVE_MBRTOWC], [1], | |
570 | [Define to 1 if mbrtowc and mbstate_t are properly declared.]) | |
571 | fi | |
572 | ]) |