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comparison m4/stdint.m4 @ 272:d5392bb5da3c 2.5
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date | Sun, 16 Aug 2009 17:16:49 +0000 |
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1 # stdint.m4 serial 32 | |
2 dnl Copyright (C) 2001-2008 Free Software Foundation, Inc. | |
3 dnl This file is free software; the Free Software Foundation | |
4 dnl gives unlimited permission to copy and/or distribute it, | |
5 dnl with or without modifications, as long as this notice is preserved. | |
6 | |
7 dnl From Paul Eggert and Bruno Haible. | |
8 dnl Test whether <stdint.h> is supported or must be substituted. | |
9 | |
10 AC_DEFUN([gl_STDINT_H], | |
11 [ | |
12 AC_PREREQ(2.59)dnl | |
13 | |
14 dnl Check for long long int and unsigned long long int. | |
15 AC_REQUIRE([AC_TYPE_LONG_LONG_INT]) | |
16 if test $ac_cv_type_long_long_int = yes; then | |
17 HAVE_LONG_LONG_INT=1 | |
18 else | |
19 HAVE_LONG_LONG_INT=0 | |
20 fi | |
21 AC_SUBST([HAVE_LONG_LONG_INT]) | |
22 AC_REQUIRE([AC_TYPE_UNSIGNED_LONG_LONG_INT]) | |
23 if test $ac_cv_type_unsigned_long_long_int = yes; then | |
24 HAVE_UNSIGNED_LONG_LONG_INT=1 | |
25 else | |
26 HAVE_UNSIGNED_LONG_LONG_INT=0 | |
27 fi | |
28 AC_SUBST([HAVE_UNSIGNED_LONG_LONG_INT]) | |
29 | |
30 dnl Check for <inttypes.h>. | |
31 dnl AC_INCLUDES_DEFAULT defines $ac_cv_header_inttypes_h. | |
32 if test $ac_cv_header_inttypes_h = yes; then | |
33 HAVE_INTTYPES_H=1 | |
34 else | |
35 HAVE_INTTYPES_H=0 | |
36 fi | |
37 AC_SUBST([HAVE_INTTYPES_H]) | |
38 | |
39 dnl Check for <sys/types.h>. | |
40 dnl AC_INCLUDES_DEFAULT defines $ac_cv_header_sys_types_h. | |
41 if test $ac_cv_header_sys_types_h = yes; then | |
42 HAVE_SYS_TYPES_H=1 | |
43 else | |
44 HAVE_SYS_TYPES_H=0 | |
45 fi | |
46 AC_SUBST([HAVE_SYS_TYPES_H]) | |
47 | |
48 gl_CHECK_NEXT_HEADERS([stdint.h]) | |
49 if test $ac_cv_header_stdint_h = yes; then | |
50 HAVE_STDINT_H=1 | |
51 else | |
52 HAVE_STDINT_H=0 | |
53 fi | |
54 AC_SUBST([HAVE_STDINT_H]) | |
55 | |
56 dnl Now see whether we need a substitute <stdint.h>. | |
57 if test $ac_cv_header_stdint_h = yes; then | |
58 AC_CACHE_CHECK([whether stdint.h conforms to C99], | |
59 [gl_cv_header_working_stdint_h], | |
60 [gl_cv_header_working_stdint_h=no | |
61 AC_COMPILE_IFELSE([ | |
62 AC_LANG_PROGRAM([[ | |
63 #define __STDC_LIMIT_MACROS 1 /* to make it work also in C++ mode */ | |
64 #define __STDC_CONSTANT_MACROS 1 /* to make it work also in C++ mode */ | |
65 #define _GL_JUST_INCLUDE_SYSTEM_STDINT_H 1 /* work if build isn't clean */ | |
66 #include <stdint.h> | |
67 /* Dragonfly defines WCHAR_MIN, WCHAR_MAX only in <wchar.h>. */ | |
68 #if !(defined WCHAR_MIN && defined WCHAR_MAX) | |
69 #error "WCHAR_MIN, WCHAR_MAX not defined in <stdint.h>" | |
70 #endif | |
71 ] | |
72 gl_STDINT_INCLUDES | |
73 [ | |
74 #ifdef INT8_MAX | |
75 int8_t a1 = INT8_MAX; | |
76 int8_t a1min = INT8_MIN; | |
77 #endif | |
78 #ifdef INT16_MAX | |
79 int16_t a2 = INT16_MAX; | |
80 int16_t a2min = INT16_MIN; | |
81 #endif | |
82 #ifdef INT32_MAX | |
83 int32_t a3 = INT32_MAX; | |
84 int32_t a3min = INT32_MIN; | |
85 #endif | |
86 #ifdef INT64_MAX | |
87 int64_t a4 = INT64_MAX; | |
88 int64_t a4min = INT64_MIN; | |
89 #endif | |
90 #ifdef UINT8_MAX | |
91 uint8_t b1 = UINT8_MAX; | |
92 #else | |
93 typedef int b1[(unsigned char) -1 != 255 ? 1 : -1]; | |
94 #endif | |
95 #ifdef UINT16_MAX | |
96 uint16_t b2 = UINT16_MAX; | |
97 #endif | |
98 #ifdef UINT32_MAX | |
99 uint32_t b3 = UINT32_MAX; | |
100 #endif | |
101 #ifdef UINT64_MAX | |
102 uint64_t b4 = UINT64_MAX; | |
103 #endif | |
104 int_least8_t c1 = INT8_C (0x7f); | |
105 int_least8_t c1max = INT_LEAST8_MAX; | |
106 int_least8_t c1min = INT_LEAST8_MIN; | |
107 int_least16_t c2 = INT16_C (0x7fff); | |
108 int_least16_t c2max = INT_LEAST16_MAX; | |
109 int_least16_t c2min = INT_LEAST16_MIN; | |
110 int_least32_t c3 = INT32_C (0x7fffffff); | |
111 int_least32_t c3max = INT_LEAST32_MAX; | |
112 int_least32_t c3min = INT_LEAST32_MIN; | |
113 int_least64_t c4 = INT64_C (0x7fffffffffffffff); | |
114 int_least64_t c4max = INT_LEAST64_MAX; | |
115 int_least64_t c4min = INT_LEAST64_MIN; | |
116 uint_least8_t d1 = UINT8_C (0xff); | |
117 uint_least8_t d1max = UINT_LEAST8_MAX; | |
118 uint_least16_t d2 = UINT16_C (0xffff); | |
119 uint_least16_t d2max = UINT_LEAST16_MAX; | |
120 uint_least32_t d3 = UINT32_C (0xffffffff); | |
121 uint_least32_t d3max = UINT_LEAST32_MAX; | |
122 uint_least64_t d4 = UINT64_C (0xffffffffffffffff); | |
123 uint_least64_t d4max = UINT_LEAST64_MAX; | |
124 int_fast8_t e1 = INT_FAST8_MAX; | |
125 int_fast8_t e1min = INT_FAST8_MIN; | |
126 int_fast16_t e2 = INT_FAST16_MAX; | |
127 int_fast16_t e2min = INT_FAST16_MIN; | |
128 int_fast32_t e3 = INT_FAST32_MAX; | |
129 int_fast32_t e3min = INT_FAST32_MIN; | |
130 int_fast64_t e4 = INT_FAST64_MAX; | |
131 int_fast64_t e4min = INT_FAST64_MIN; | |
132 uint_fast8_t f1 = UINT_FAST8_MAX; | |
133 uint_fast16_t f2 = UINT_FAST16_MAX; | |
134 uint_fast32_t f3 = UINT_FAST32_MAX; | |
135 uint_fast64_t f4 = UINT_FAST64_MAX; | |
136 #ifdef INTPTR_MAX | |
137 intptr_t g = INTPTR_MAX; | |
138 intptr_t gmin = INTPTR_MIN; | |
139 #endif | |
140 #ifdef UINTPTR_MAX | |
141 uintptr_t h = UINTPTR_MAX; | |
142 #endif | |
143 intmax_t i = INTMAX_MAX; | |
144 uintmax_t j = UINTMAX_MAX; | |
145 | |
146 #include <limits.h> /* for CHAR_BIT */ | |
147 #define TYPE_MINIMUM(t) \ | |
148 ((t) ((t) 0 < (t) -1 ? (t) 0 : ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1))) | |
149 #define TYPE_MAXIMUM(t) \ | |
150 ((t) ((t) 0 < (t) -1 ? (t) -1 : ~ (~ (t) 0 << (sizeof (t) * CHAR_BIT - 1)))) | |
151 struct s { | |
152 int check_PTRDIFF: | |
153 PTRDIFF_MIN == TYPE_MINIMUM (ptrdiff_t) | |
154 && PTRDIFF_MAX == TYPE_MAXIMUM (ptrdiff_t) | |
155 ? 1 : -1; | |
156 /* Detect bug in FreeBSD 6.0 / ia64. */ | |
157 int check_SIG_ATOMIC: | |
158 SIG_ATOMIC_MIN == TYPE_MINIMUM (sig_atomic_t) | |
159 && SIG_ATOMIC_MAX == TYPE_MAXIMUM (sig_atomic_t) | |
160 ? 1 : -1; | |
161 int check_SIZE: SIZE_MAX == TYPE_MAXIMUM (size_t) ? 1 : -1; | |
162 int check_WCHAR: | |
163 WCHAR_MIN == TYPE_MINIMUM (wchar_t) | |
164 && WCHAR_MAX == TYPE_MAXIMUM (wchar_t) | |
165 ? 1 : -1; | |
166 /* Detect bug in mingw. */ | |
167 int check_WINT: | |
168 WINT_MIN == TYPE_MINIMUM (wint_t) | |
169 && WINT_MAX == TYPE_MAXIMUM (wint_t) | |
170 ? 1 : -1; | |
171 | |
172 /* Detect bugs in glibc 2.4 and Solaris 10 stdint.h, among others. */ | |
173 int check_UINT8_C: | |
174 (-1 < UINT8_C (0)) == (-1 < (uint_least8_t) 0) ? 1 : -1; | |
175 int check_UINT16_C: | |
176 (-1 < UINT16_C (0)) == (-1 < (uint_least16_t) 0) ? 1 : -1; | |
177 | |
178 /* Detect bugs in OpenBSD 3.9 stdint.h. */ | |
179 #ifdef UINT8_MAX | |
180 int check_uint8: (uint8_t) -1 == UINT8_MAX ? 1 : -1; | |
181 #endif | |
182 #ifdef UINT16_MAX | |
183 int check_uint16: (uint16_t) -1 == UINT16_MAX ? 1 : -1; | |
184 #endif | |
185 #ifdef UINT32_MAX | |
186 int check_uint32: (uint32_t) -1 == UINT32_MAX ? 1 : -1; | |
187 #endif | |
188 #ifdef UINT64_MAX | |
189 int check_uint64: (uint64_t) -1 == UINT64_MAX ? 1 : -1; | |
190 #endif | |
191 int check_uint_least8: (uint_least8_t) -1 == UINT_LEAST8_MAX ? 1 : -1; | |
192 int check_uint_least16: (uint_least16_t) -1 == UINT_LEAST16_MAX ? 1 : -1; | |
193 int check_uint_least32: (uint_least32_t) -1 == UINT_LEAST32_MAX ? 1 : -1; | |
194 int check_uint_least64: (uint_least64_t) -1 == UINT_LEAST64_MAX ? 1 : -1; | |
195 int check_uint_fast8: (uint_fast8_t) -1 == UINT_FAST8_MAX ? 1 : -1; | |
196 int check_uint_fast16: (uint_fast16_t) -1 == UINT_FAST16_MAX ? 1 : -1; | |
197 int check_uint_fast32: (uint_fast32_t) -1 == UINT_FAST32_MAX ? 1 : -1; | |
198 int check_uint_fast64: (uint_fast64_t) -1 == UINT_FAST64_MAX ? 1 : -1; | |
199 int check_uintptr: (uintptr_t) -1 == UINTPTR_MAX ? 1 : -1; | |
200 int check_uintmax: (uintmax_t) -1 == UINTMAX_MAX ? 1 : -1; | |
201 int check_size: (size_t) -1 == SIZE_MAX ? 1 : -1; | |
202 }; | |
203 ]])], | |
204 [gl_cv_header_working_stdint_h=yes])]) | |
205 fi | |
206 if test "$gl_cv_header_working_stdint_h" = yes; then | |
207 STDINT_H= | |
208 else | |
209 dnl Check for <sys/inttypes.h>, and for | |
210 dnl <sys/bitypes.h> (used in Linux libc4 >= 4.6.7 and libc5). | |
211 AC_CHECK_HEADERS([sys/inttypes.h sys/bitypes.h]) | |
212 if test $ac_cv_header_sys_inttypes_h = yes; then | |
213 HAVE_SYS_INTTYPES_H=1 | |
214 else | |
215 HAVE_SYS_INTTYPES_H=0 | |
216 fi | |
217 AC_SUBST([HAVE_SYS_INTTYPES_H]) | |
218 if test $ac_cv_header_sys_bitypes_h = yes; then | |
219 HAVE_SYS_BITYPES_H=1 | |
220 else | |
221 HAVE_SYS_BITYPES_H=0 | |
222 fi | |
223 AC_SUBST([HAVE_SYS_BITYPES_H]) | |
224 | |
225 dnl Check for <wchar.h> (missing in Linux uClibc when built without wide | |
226 dnl character support). | |
227 AC_CHECK_HEADERS_ONCE([wchar.h]) | |
228 | |
229 gl_STDINT_TYPE_PROPERTIES | |
230 STDINT_H=stdint.h | |
231 fi | |
232 AC_SUBST(STDINT_H) | |
233 ]) | |
234 | |
235 dnl gl_STDINT_BITSIZEOF(TYPES, INCLUDES) | |
236 dnl Determine the size of each of the given types in bits. | |
237 AC_DEFUN([gl_STDINT_BITSIZEOF], | |
238 [ | |
239 dnl Use a shell loop, to avoid bloating configure, and | |
240 dnl - extra AH_TEMPLATE calls, so that autoheader knows what to put into | |
241 dnl config.h.in, | |
242 dnl - extra AC_SUBST calls, so that the right substitutions are made. | |
243 m4_foreach_w([gltype], [$1], | |
244 [AH_TEMPLATE([BITSIZEOF_]translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_]), | |
245 [Define to the number of bits in type ']gltype['.])]) | |
246 for gltype in $1 ; do | |
247 AC_CACHE_CHECK([for bit size of $gltype], [gl_cv_bitsizeof_${gltype}], | |
248 [AC_COMPUTE_INT([result], [sizeof ($gltype) * CHAR_BIT], | |
249 [$2 | |
250 #include <limits.h>], [result=unknown]) | |
251 eval gl_cv_bitsizeof_${gltype}=\$result | |
252 ]) | |
253 eval result=\$gl_cv_bitsizeof_${gltype} | |
254 if test $result = unknown; then | |
255 dnl Use a nonempty default, because some compilers, such as IRIX 5 cc, | |
256 dnl do a syntax check even on unused #if conditions and give an error | |
257 dnl on valid C code like this: | |
258 dnl #if 0 | |
259 dnl # if > 32 | |
260 dnl # endif | |
261 dnl #endif | |
262 result=0 | |
263 fi | |
264 GLTYPE=`echo "$gltype" | tr 'abcdefghijklmnopqrstuvwxyz ' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'` | |
265 AC_DEFINE_UNQUOTED([BITSIZEOF_${GLTYPE}], [$result]) | |
266 eval BITSIZEOF_${GLTYPE}=\$result | |
267 done | |
268 m4_foreach_w([gltype], [$1], | |
269 [AC_SUBST([BITSIZEOF_]translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_]))]) | |
270 ]) | |
271 | |
272 dnl gl_CHECK_TYPES_SIGNED(TYPES, INCLUDES) | |
273 dnl Determine the signedness of each of the given types. | |
274 dnl Define HAVE_SIGNED_TYPE if type is signed. | |
275 AC_DEFUN([gl_CHECK_TYPES_SIGNED], | |
276 [ | |
277 dnl Use a shell loop, to avoid bloating configure, and | |
278 dnl - extra AH_TEMPLATE calls, so that autoheader knows what to put into | |
279 dnl config.h.in, | |
280 dnl - extra AC_SUBST calls, so that the right substitutions are made. | |
281 m4_foreach_w([gltype], [$1], | |
282 [AH_TEMPLATE([HAVE_SIGNED_]translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_]), | |
283 [Define to 1 if ']gltype[' is a signed integer type.])]) | |
284 for gltype in $1 ; do | |
285 AC_CACHE_CHECK([whether $gltype is signed], [gl_cv_type_${gltype}_signed], | |
286 [AC_COMPILE_IFELSE( | |
287 [AC_LANG_PROGRAM([$2[ | |
288 int verify[2 * (($gltype) -1 < ($gltype) 0) - 1];]])], | |
289 result=yes, result=no) | |
290 eval gl_cv_type_${gltype}_signed=\$result | |
291 ]) | |
292 eval result=\$gl_cv_type_${gltype}_signed | |
293 GLTYPE=`echo $gltype | tr 'abcdefghijklmnopqrstuvwxyz ' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'` | |
294 if test "$result" = yes; then | |
295 AC_DEFINE_UNQUOTED([HAVE_SIGNED_${GLTYPE}], 1) | |
296 eval HAVE_SIGNED_${GLTYPE}=1 | |
297 else | |
298 eval HAVE_SIGNED_${GLTYPE}=0 | |
299 fi | |
300 done | |
301 m4_foreach_w([gltype], [$1], | |
302 [AC_SUBST([HAVE_SIGNED_]translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_]))]) | |
303 ]) | |
304 | |
305 dnl gl_INTEGER_TYPE_SUFFIX(TYPES, INCLUDES) | |
306 dnl Determine the suffix to use for integer constants of the given types. | |
307 dnl Define t_SUFFIX for each such type. | |
308 AC_DEFUN([gl_INTEGER_TYPE_SUFFIX], | |
309 [ | |
310 dnl Use a shell loop, to avoid bloating configure, and | |
311 dnl - extra AH_TEMPLATE calls, so that autoheader knows what to put into | |
312 dnl config.h.in, | |
313 dnl - extra AC_SUBST calls, so that the right substitutions are made. | |
314 m4_foreach_w([gltype], [$1], | |
315 [AH_TEMPLATE(translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_])[_SUFFIX], | |
316 [Define to l, ll, u, ul, ull, etc., as suitable for | |
317 constants of type ']gltype['.])]) | |
318 for gltype in $1 ; do | |
319 AC_CACHE_CHECK([for $gltype integer literal suffix], | |
320 [gl_cv_type_${gltype}_suffix], | |
321 [eval gl_cv_type_${gltype}_suffix=no | |
322 eval result=\$gl_cv_type_${gltype}_signed | |
323 if test "$result" = yes; then | |
324 glsufu= | |
325 else | |
326 glsufu=u | |
327 fi | |
328 for glsuf in "$glsufu" ${glsufu}l ${glsufu}ll ${glsufu}i64; do | |
329 case $glsuf in | |
330 '') gltype1='int';; | |
331 l) gltype1='long int';; | |
332 ll) gltype1='long long int';; | |
333 i64) gltype1='__int64';; | |
334 u) gltype1='unsigned int';; | |
335 ul) gltype1='unsigned long int';; | |
336 ull) gltype1='unsigned long long int';; | |
337 ui64)gltype1='unsigned __int64';; | |
338 esac | |
339 AC_COMPILE_IFELSE( | |
340 [AC_LANG_PROGRAM([$2[ | |
341 extern $gltype foo; | |
342 extern $gltype1 foo;]])], | |
343 [eval gl_cv_type_${gltype}_suffix=\$glsuf]) | |
344 eval result=\$gl_cv_type_${gltype}_suffix | |
345 test "$result" != no && break | |
346 done]) | |
347 GLTYPE=`echo $gltype | tr 'abcdefghijklmnopqrstuvwxyz ' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'` | |
348 eval result=\$gl_cv_type_${gltype}_suffix | |
349 test "$result" = no && result= | |
350 eval ${GLTYPE}_SUFFIX=\$result | |
351 AC_DEFINE_UNQUOTED([${GLTYPE}_SUFFIX], $result) | |
352 done | |
353 m4_foreach_w([gltype], [$1], | |
354 [AC_SUBST(translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_])[_SUFFIX])]) | |
355 ]) | |
356 | |
357 dnl gl_STDINT_INCLUDES | |
358 AC_DEFUN([gl_STDINT_INCLUDES], | |
359 [[ | |
360 /* BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be | |
361 included before <wchar.h>. */ | |
362 #include <stddef.h> | |
363 #include <signal.h> | |
364 #if HAVE_WCHAR_H | |
365 # include <stdio.h> | |
366 # include <time.h> | |
367 # include <wchar.h> | |
368 #endif | |
369 ]]) | |
370 | |
371 dnl gl_STDINT_TYPE_PROPERTIES | |
372 dnl Compute HAVE_SIGNED_t, BITSIZEOF_t and t_SUFFIX, for all the types t | |
373 dnl of interest to stdint.in.h. | |
374 AC_DEFUN([gl_STDINT_TYPE_PROPERTIES], | |
375 [ | |
376 AC_REQUIRE([gl_MULTIARCH]) | |
377 if test $APPLE_UNIVERSAL_BUILD = 0; then | |
378 gl_STDINT_BITSIZEOF([ptrdiff_t size_t], | |
379 [gl_STDINT_INCLUDES]) | |
380 fi | |
381 gl_STDINT_BITSIZEOF([sig_atomic_t wchar_t wint_t], | |
382 [gl_STDINT_INCLUDES]) | |
383 gl_CHECK_TYPES_SIGNED([sig_atomic_t wchar_t wint_t], | |
384 [gl_STDINT_INCLUDES]) | |
385 gl_cv_type_ptrdiff_t_signed=yes | |
386 gl_cv_type_size_t_signed=no | |
387 if test $APPLE_UNIVERSAL_BUILD = 0; then | |
388 gl_INTEGER_TYPE_SUFFIX([ptrdiff_t size_t], | |
389 [gl_STDINT_INCLUDES]) | |
390 fi | |
391 gl_INTEGER_TYPE_SUFFIX([sig_atomic_t wchar_t wint_t], | |
392 [gl_STDINT_INCLUDES]) | |
393 ]) | |
394 | |
395 dnl Autoconf >= 2.61 has AC_COMPUTE_INT built-in. | |
396 dnl Remove this when we can assume autoconf >= 2.61. | |
397 m4_ifdef([AC_COMPUTE_INT], [], [ | |
398 AC_DEFUN([AC_COMPUTE_INT], [_AC_COMPUTE_INT([$2],[$1],[$3],[$4])]) | |
399 ]) | |
400 | |
401 # Hey Emacs! | |
402 # Local Variables: | |
403 # indent-tabs-mode: nil | |
404 # End: |