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
|
AC_DEFUN([GCC_STDINT_TYPES],
[AC_REQUIRE([AC_TYPE_INT8_T])
AC_REQUIRE([AC_TYPE_INT16_T])
AC_REQUIRE([AC_TYPE_INT32_T])
AC_REQUIRE([AC_TYPE_INT64_T])
AC_REQUIRE([AC_TYPE_INTMAX_T])
AC_REQUIRE([AC_TYPE_INTPTR_T])
AC_REQUIRE([AC_TYPE_UINT8_T])
AC_REQUIRE([AC_TYPE_UINT16_T])
AC_REQUIRE([AC_TYPE_UINT32_T])
AC_REQUIRE([AC_TYPE_UINT64_T])
AC_REQUIRE([AC_TYPE_UINTMAX_T])
AC_REQUIRE([AC_TYPE_UINTPTR_T])])
dnl @synopsis GCC_HEADER_STDINT [( HEADER-TO-GENERATE [, HEADERS-TO-CHECK])]
dnl
dnl the "ISO C9X: 7.18 Integer types <stdint.h>" section requires the
dnl existence of an include file <stdint.h> that defines a set of
dnl typedefs, especially uint8_t,int32_t,uintptr_t.
dnl Many older installations will not provide this file, but some will
dnl have the very same definitions in <inttypes.h>. In other environments
dnl we can use the inet-types in <sys/types.h> which would define the
dnl typedefs int8_t and u_int8_t respectivly.
dnl
dnl This macros will create a local "_stdint.h" or the headerfile given as
dnl an argument. In many cases that file will pick the definition from a
dnl "#include <stdint.h>" or "#include <inttypes.h>" statement, while
dnl in other environments it will provide the set of basic 'stdint's defined:
dnl int8_t,uint8_t,int16_t,uint16_t,int32_t,uint32_t,intptr_t,uintptr_t
dnl int_least32_t.. int_fast32_t.. intmax_t
dnl which may or may not rely on the definitions of other files.
dnl
dnl Sometimes the stdint.h or inttypes.h headers conflict with sys/types.h,
dnl so we test the headers together with sys/types.h and always include it
dnl into the generated header (to match the tests with the generated file).
dnl Hopefully this is not a big annoyance.
dnl
dnl If your installed header files require the stdint-types you will want to
dnl create an installable file mylib-int.h that all your other installable
dnl header may include. So, for a library package named "mylib", just use
dnl GCC_HEADER_STDINT(mylib-int.h)
dnl in configure.in and install that header file in Makefile.am along with
dnl the other headers (mylib.h). The mylib-specific headers can simply
dnl use "#include <mylib-int.h>" to obtain the stdint-types.
dnl
dnl Remember, if the system already had a valid <stdint.h>, the generated
dnl file will include it directly. No need for fuzzy HAVE_STDINT_H things...
dnl
dnl @author Guido Draheim <guidod@gmx.de>, Paolo Bonzini <bonzini@gnu.org>
AC_DEFUN([GCC_HEADER_STDINT],
[m4_define(_GCC_STDINT_H, m4_ifval($1, $1, _stdint.h))
inttype_headers=`echo inttypes.h sys/inttypes.h $2 | sed -e 's/,/ /g'`
acx_cv_header_stdint=stddef.h
acx_cv_header_stdint_kind="(already complete)"
for i in stdint.h $inttype_headers; do
unset ac_cv_type_uintptr_t
unset ac_cv_type_uintmax_t
unset ac_cv_type_int_least32_t
unset ac_cv_type_int_fast32_t
unset ac_cv_type_uint64_t
_AS_ECHO_N([looking for a compliant stdint.h in $i, ])
AC_CHECK_TYPE(uintmax_t,[acx_cv_header_stdint=$i],continue,[#include <sys/types.h>
#include <$i>])
AC_CHECK_TYPE(uintptr_t,,[acx_cv_header_stdint_kind="(mostly complete)"], [#include <sys/types.h>
#include <$i>])
AC_CHECK_TYPE(int_least32_t,,[acx_cv_header_stdint_kind="(mostly complete)"], [#include <sys/types.h>
#include <$i>])
AC_CHECK_TYPE(int_fast32_t,,[acx_cv_header_stdint_kind="(mostly complete)"], [#include <sys/types.h>
#include <$i>])
AC_CHECK_TYPE(uint64_t,,[acx_cv_header_stdint_kind="(lacks uint64_t)"], [#include <sys/types.h>
#include <$i>])
break
done
if test "$acx_cv_header_stdint" = stddef.h; then
acx_cv_header_stdint_kind="(lacks uintmax_t)"
for i in stdint.h $inttype_headers; do
unset ac_cv_type_uintptr_t
unset ac_cv_type_uint32_t
unset ac_cv_type_uint64_t
_AS_ECHO_N([looking for an incomplete stdint.h in $i, ])
AC_CHECK_TYPE(uint32_t,[acx_cv_header_stdint=$i],continue,[#include <sys/types.h>
#include <$i>])
AC_CHECK_TYPE(uint64_t,,,[#include <sys/types.h>
#include <$i>])
AC_CHECK_TYPE(uintptr_t,,,[#include <sys/types.h>
#include <$i>])
break
done
fi
if test "$acx_cv_header_stdint" = stddef.h; then
acx_cv_header_stdint_kind="(u_intXX_t style)"
for i in sys/types.h $inttype_headers; do
unset ac_cv_type_u_int32_t
unset ac_cv_type_u_int64_t
_AS_ECHO_N([looking for u_intXX_t types in $i, ])
AC_CHECK_TYPE(u_int32_t,[acx_cv_header_stdint=$i],continue,[#include <sys/types.h>
#include <$i>])
AC_CHECK_TYPE(u_int64_t,,,[#include <sys/types.h>
#include <$i>])
break
done
fi
if test "$acx_cv_header_stdint" = stddef.h; then
acx_cv_header_stdint_kind="(using manual detection)"
fi
test -z "$ac_cv_type_uintptr_t" && ac_cv_type_uintptr_t=no
test -z "$ac_cv_type_uint64_t" && ac_cv_type_uint64_t=no
test -z "$ac_cv_type_u_int64_t" && ac_cv_type_u_int64_t=no
test -z "$ac_cv_type_int_least32_t" && ac_cv_type_int_least32_t=no
test -z "$ac_cv_type_int_fast32_t" && ac_cv_type_int_fast32_t=no
# ----------------- Summarize what we found so far
AC_MSG_CHECKING([what to include in _GCC_STDINT_H])
case `AS_BASENAME(_GCC_STDINT_H)` in
stdint.h) AC_MSG_WARN([are you sure you want it there?]) ;;
inttypes.h) AC_MSG_WARN([are you sure you want it there?]) ;;
*) ;;
esac
AC_MSG_RESULT($acx_cv_header_stdint $acx_cv_header_stdint_kind)
# ----------------- done included file, check C basic types --------
# Lacking an uintptr_t? Test size of void *
case "$acx_cv_header_stdint:$ac_cv_type_uintptr_t" in
stddef.h:* | *:no) AC_CHECK_SIZEOF(void *) ;;
esac
# Lacking an uint64_t? Test size of long
case "$acx_cv_header_stdint:$ac_cv_type_uint64_t:$ac_cv_type_u_int64_t" in
stddef.h:*:* | *:no:no) AC_CHECK_SIZEOF(long) ;;
esac
if test $acx_cv_header_stdint = stddef.h; then
# Lacking a good header? Test size of everything and deduce all types.
AC_CHECK_SIZEOF(int)
AC_CHECK_SIZEOF(short)
AC_CHECK_SIZEOF(char)
AC_MSG_CHECKING(for type equivalent to int8_t)
case "$ac_cv_sizeof_char" in
1) acx_cv_type_int8_t=char ;;
*) AC_MSG_ERROR([no 8-bit type, please report a bug])
esac
AC_MSG_RESULT($acx_cv_type_int8_t)
AC_MSG_CHECKING(for type equivalent to int16_t)
case "$ac_cv_sizeof_int:$ac_cv_sizeof_short" in
2:*) acx_cv_type_int16_t=int ;;
*:2) acx_cv_type_int16_t=short ;;
*) AC_MSG_ERROR([no 16-bit type, please report a bug])
esac
AC_MSG_RESULT($acx_cv_type_int16_t)
AC_MSG_CHECKING(for type equivalent to int32_t)
case "$ac_cv_sizeof_int:$ac_cv_sizeof_long" in
4:*) acx_cv_type_int32_t=int ;;
*:4) acx_cv_type_int32_t=long ;;
*) AC_MSG_ERROR([no 32-bit type, please report a bug])
esac
AC_MSG_RESULT($acx_cv_type_int32_t)
fi
# These tests are here to make the output prettier
if test "$ac_cv_type_uint64_t" != yes && test "$ac_cv_type_u_int64_t" != yes; then
case "$ac_cv_sizeof_long" in
8) acx_cv_type_int64_t=long ;;
esac
AC_MSG_CHECKING(for type equivalent to int64_t)
AC_MSG_RESULT(${acx_cv_type_int64_t-'using preprocessor symbols'})
fi
# Now we can use the above types
if test "$ac_cv_type_uintptr_t" != yes; then
AC_MSG_CHECKING(for type equivalent to intptr_t)
case $ac_cv_sizeof_void_p in
2) acx_cv_type_intptr_t=int16_t ;;
4) acx_cv_type_intptr_t=int32_t ;;
8) acx_cv_type_intptr_t=int64_t ;;
*) AC_MSG_ERROR([no equivalent for intptr_t, please report a bug])
esac
AC_MSG_RESULT($acx_cv_type_intptr_t)
fi
# ----------------- done all checks, emit header -------------
AC_CONFIG_COMMANDS(_GCC_STDINT_H, [
if test "$GCC" = yes; then
echo "/* generated for " `$CC --version | sed 1q` "*/" > tmp-stdint.h
else
echo "/* generated for $CC */" > tmp-stdint.h
fi
sed 's/^ *//' >> tmp-stdint.h <<EOF
#ifndef GCC_GENERATED_STDINT_H
#define GCC_GENERATED_STDINT_H 1
#include <sys/types.h>
EOF
if test "$acx_cv_header_stdint" != stdint.h; then
echo "#include <stddef.h>" >> tmp-stdint.h
fi
if test "$acx_cv_header_stdint" != stddef.h; then
echo "#include <$acx_cv_header_stdint>" >> tmp-stdint.h
fi
sed 's/^ *//' >> tmp-stdint.h <<EOF
/* glibc uses these symbols as guards to prevent redefinitions. */
#ifdef __int8_t_defined
#define _INT8_T
#define _INT16_T
#define _INT32_T
#endif
#ifdef __uint32_t_defined
#define _UINT32_T
#endif
EOF
# ----------------- done header, emit basic int types -------------
if test "$acx_cv_header_stdint" = stddef.h; then
sed 's/^ *//' >> tmp-stdint.h <<EOF
#ifndef _UINT8_T
#define _UINT8_T
#ifndef __uint8_t_defined
#define __uint8_t_defined
#ifndef uint8_t
typedef unsigned $acx_cv_type_int8_t uint8_t;
#endif
#endif
#endif
#ifndef _UINT16_T
#define _UINT16_T
#ifndef __uint16_t_defined
#define __uint16_t_defined
#ifndef uint16_t
typedef unsigned $acx_cv_type_int16_t uint16_t;
#endif
#endif
#endif
#ifndef _UINT32_T
#define _UINT32_T
#ifndef __uint32_t_defined
#define __uint32_t_defined
#ifndef uint32_t
typedef unsigned $acx_cv_type_int32_t uint32_t;
#endif
#endif
#endif
#ifndef _INT8_T
#define _INT8_T
#ifndef __int8_t_defined
#define __int8_t_defined
#ifndef int8_t
typedef $acx_cv_type_int8_t int8_t;
#endif
#endif
#endif
#ifndef _INT16_T
#define _INT16_T
#ifndef __int16_t_defined
#define __int16_t_defined
#ifndef int16_t
typedef $acx_cv_type_int16_t int16_t;
#endif
#endif
#endif
#ifndef _INT32_T
#define _INT32_T
#ifndef __int32_t_defined
#define __int32_t_defined
#ifndef int32_t
typedef $acx_cv_type_int32_t int32_t;
#endif
#endif
#endif
EOF
elif test "$ac_cv_type_u_int32_t" = yes; then
sed 's/^ *//' >> tmp-stdint.h <<EOF
/* int8_t int16_t int32_t defined by inet code, we do the u_intXX types */
#ifndef _INT8_T
#define _INT8_T
#endif
#ifndef _INT16_T
#define _INT16_T
#endif
#ifndef _INT32_T
#define _INT32_T
#endif
#ifndef _UINT8_T
#define _UINT8_T
#ifndef __uint8_t_defined
#define __uint8_t_defined
#ifndef uint8_t
typedef u_int8_t uint8_t;
#endif
#endif
#endif
#ifndef _UINT16_T
#define _UINT16_T
#ifndef __uint16_t_defined
#define __uint16_t_defined
#ifndef uint16_t
typedef u_int16_t uint16_t;
#endif
#endif
#endif
#ifndef _UINT32_T
#define _UINT32_T
#ifndef __uint32_t_defined
#define __uint32_t_defined
#ifndef uint32_t
typedef u_int32_t uint32_t;
#endif
#endif
#endif
EOF
else
sed 's/^ *//' >> tmp-stdint.h <<EOF
/* Some systems have guard macros to prevent redefinitions, define them. */
#ifndef _INT8_T
#define _INT8_T
#endif
#ifndef _INT16_T
#define _INT16_T
#endif
#ifndef _INT32_T
#define _INT32_T
#endif
#ifndef _UINT8_T
#define _UINT8_T
#endif
#ifndef _UINT16_T
#define _UINT16_T
#endif
#ifndef _UINT32_T
#define _UINT32_T
#endif
EOF
fi
# ------------- done basic int types, emit int64_t types ------------
if test "$ac_cv_type_uint64_t" = yes; then
sed 's/^ *//' >> tmp-stdint.h <<EOF
/* system headers have good uint64_t and int64_t */
#ifndef _INT64_T
#define _INT64_T
#endif
#ifndef _UINT64_T
#define _UINT64_T
#endif
EOF
elif test "$ac_cv_type_u_int64_t" = yes; then
sed 's/^ *//' >> tmp-stdint.h <<EOF
/* system headers have an u_int64_t (and int64_t) */
#ifndef _INT64_T
#define _INT64_T
#endif
#ifndef _UINT64_T
#define _UINT64_T
#ifndef __uint64_t_defined
#define __uint64_t_defined
#ifndef uint64_t
typedef u_int64_t uint64_t;
#endif
#endif
#endif
EOF
elif test -n "$acx_cv_type_int64_t"; then
sed 's/^ *//' >> tmp-stdint.h <<EOF
/* architecture has a 64-bit type, $acx_cv_type_int64_t */
#ifndef _INT64_T
#define _INT64_T
#ifndef int64_t
typedef $acx_cv_type_int64_t int64_t;
#endif
#endif
#ifndef _UINT64_T
#define _UINT64_T
#ifndef __uint64_t_defined
#define __uint64_t_defined
#ifndef uint64_t
typedef unsigned $acx_cv_type_int64_t uint64_t;
#endif
#endif
#endif
EOF
else
sed 's/^ *//' >> tmp-stdint.h <<EOF
/* some common heuristics for int64_t, using compiler-specific tests */
#if defined __STDC_VERSION__ && (__STDC_VERSION__-0) >= 199901L
#ifndef _INT64_T
#define _INT64_T
#ifndef __int64_t_defined
#ifndef int64_t
typedef long long int64_t;
#endif
#endif
#endif
#ifndef _UINT64_T
#define _UINT64_T
#ifndef uint64_t
typedef unsigned long long uint64_t;
#endif
#endif
#elif defined __GNUC__ && defined (__STDC__) && __STDC__-0
/* NextStep 2.0 cc is really gcc 1.93 but it defines __GNUC__ = 2 and
does not implement __extension__. But that compiler doesn't define
__GNUC_MINOR__. */
# if __GNUC__ < 2 || (__NeXT__ && !__GNUC_MINOR__)
# define __extension__
# endif
# ifndef _INT64_T
# define _INT64_T
# ifndef int64_t
__extension__ typedef long long int64_t;
# endif
# endif
# ifndef _UINT64_T
# define _UINT64_T
# ifndef uint64_t
__extension__ typedef unsigned long long uint64_t;
# endif
# endif
#elif !defined __STRICT_ANSI__
# if defined _MSC_VER || defined __WATCOMC__ || defined __BORLANDC__
# ifndef _INT64_T
# define _INT64_T
# ifndef int64_t
typedef __int64 int64_t;
# endif
# endif
# ifndef _UINT64_T
# define _UINT64_T
# ifndef uint64_t
typedef unsigned __int64 uint64_t;
# endif
# endif
# endif /* compiler */
#endif /* ANSI version */
EOF
fi
# ------------- done int64_t types, emit intptr types ------------
if test "$ac_cv_type_uintptr_t" != yes; then
sed 's/^ *//' >> tmp-stdint.h <<EOF
/* Define intptr_t based on sizeof(void*) = $ac_cv_sizeof_void_p */
#ifndef __uintptr_t_defined
#ifndef uintptr_t
typedef u$acx_cv_type_intptr_t uintptr_t;
#endif
#endif
#ifndef __intptr_t_defined
#ifndef intptr_t
typedef $acx_cv_type_intptr_t intptr_t;
#endif
#endif
EOF
fi
# ------------- done intptr types, emit int_least types ------------
if test "$ac_cv_type_int_least32_t" != yes; then
sed 's/^ *//' >> tmp-stdint.h <<EOF
/* Define int_least types */
typedef int8_t int_least8_t;
typedef int16_t int_least16_t;
typedef int32_t int_least32_t;
#ifdef _INT64_T
typedef int64_t int_least64_t;
#endif
typedef uint8_t uint_least8_t;
typedef uint16_t uint_least16_t;
typedef uint32_t uint_least32_t;
#ifdef _UINT64_T
typedef uint64_t uint_least64_t;
#endif
EOF
fi
# ------------- done intptr types, emit int_fast types ------------
if test "$ac_cv_type_int_fast32_t" != yes; then
dnl NOTE: The following code assumes that sizeof (int) > 1.
dnl Fix when strange machines are reported.
sed 's/^ *//' >> tmp-stdint.h <<EOF
/* Define int_fast types. short is often slow */
typedef int8_t int_fast8_t;
typedef int int_fast16_t;
typedef int32_t int_fast32_t;
#ifdef _INT64_T
typedef int64_t int_fast64_t;
#endif
typedef uint8_t uint_fast8_t;
typedef unsigned int uint_fast16_t;
typedef uint32_t uint_fast32_t;
#ifdef _UINT64_T
typedef uint64_t uint_fast64_t;
#endif
EOF
fi
if test "$ac_cv_type_uintmax_t" != yes; then
sed 's/^ *//' >> tmp-stdint.h <<EOF
/* Define intmax based on what we found */
#ifndef intmax_t
#ifdef _INT64_T
typedef int64_t intmax_t;
#else
typedef long intmax_t;
#endif
#endif
#ifndef uintmax_t
#ifdef _UINT64_T
typedef uint64_t uintmax_t;
#else
typedef unsigned long uintmax_t;
#endif
#endif
EOF
fi
sed 's/^ *//' >> tmp-stdint.h <<EOF
#endif /* GCC_GENERATED_STDINT_H */
EOF
if test -r ]_GCC_STDINT_H[ && cmp -s tmp-stdint.h ]_GCC_STDINT_H[; then
rm -f tmp-stdint.h
else
mv -f tmp-stdint.h ]_GCC_STDINT_H[
fi
], [
GCC="$GCC"
CC="$CC"
acx_cv_header_stdint="$acx_cv_header_stdint"
acx_cv_type_int8_t="$acx_cv_type_int8_t"
acx_cv_type_int16_t="$acx_cv_type_int16_t"
acx_cv_type_int32_t="$acx_cv_type_int32_t"
acx_cv_type_int64_t="$acx_cv_type_int64_t"
acx_cv_type_intptr_t="$acx_cv_type_intptr_t"
ac_cv_type_uintmax_t="$ac_cv_type_uintmax_t"
ac_cv_type_uintptr_t="$ac_cv_type_uintptr_t"
ac_cv_type_uint64_t="$ac_cv_type_uint64_t"
ac_cv_type_u_int64_t="$ac_cv_type_u_int64_t"
ac_cv_type_u_int32_t="$ac_cv_type_u_int32_t"
ac_cv_type_int_least32_t="$ac_cv_type_int_least32_t"
ac_cv_type_int_fast32_t="$ac_cv_type_int_fast32_t"
ac_cv_sizeof_void_p="$ac_cv_sizeof_void_p"
])
])
|