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[/] [openrisc/] [trunk/] [gnu-stable/] [newlib-1.18.0/] [config/] [stdint.m4] - Blame information for rev 841

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1 207 jeremybenn
AC_DEFUN([GCC_STDINT_TYPES],
2
[AC_REQUIRE([AC_TYPE_INT8_T])
3
AC_REQUIRE([AC_TYPE_INT16_T])
4
AC_REQUIRE([AC_TYPE_INT32_T])
5
AC_REQUIRE([AC_TYPE_INT64_T])
6
AC_REQUIRE([AC_TYPE_INTMAX_T])
7
AC_REQUIRE([AC_TYPE_INTPTR_T])
8
AC_REQUIRE([AC_TYPE_UINT8_T])
9
AC_REQUIRE([AC_TYPE_UINT16_T])
10
AC_REQUIRE([AC_TYPE_UINT32_T])
11
AC_REQUIRE([AC_TYPE_UINT64_T])
12
AC_REQUIRE([AC_TYPE_UINTMAX_T])
13
AC_REQUIRE([AC_TYPE_UINTPTR_T])])
14
 
15
dnl @synopsis GCC_HEADER_STDINT [( HEADER-TO-GENERATE [, HEADERS-TO-CHECK])]
16
dnl
17
dnl the "ISO C9X: 7.18 Integer types <stdint.h>" section requires the
18
dnl existence of an include file <stdint.h> that defines a set of
19
dnl typedefs, especially uint8_t,int32_t,uintptr_t.
20
dnl Many older installations will not provide this file, but some will
21
dnl have the very same definitions in <inttypes.h>. In other enviroments
22
dnl we can use the inet-types in <sys/types.h> which would define the
23
dnl typedefs int8_t and u_int8_t respectivly.
24
dnl
25
dnl This macros will create a local "_stdint.h" or the headerfile given as
26
dnl an argument. In many cases that file will pick the definition from a
27
dnl "#include <stdint.h>" or "#include <inttypes.h>" statement, while
28
dnl in other environments it will provide the set of basic 'stdint's defined:
29
dnl int8_t,uint8_t,int16_t,uint16_t,int32_t,uint32_t,intptr_t,uintptr_t
30
dnl int_least32_t.. int_fast32_t.. intmax_t
31
dnl which may or may not rely on the definitions of other files.
32
dnl
33
dnl Sometimes the stdint.h or inttypes.h headers conflict with sys/types.h,
34
dnl so we test the headers together with sys/types.h and always include it
35
dnl into the generated header (to match the tests with the generated file).
36
dnl Hopefully this is not a big annoyance.
37
dnl
38
dnl If your installed header files require the stdint-types you will want to
39
dnl create an installable file mylib-int.h that all your other installable
40
dnl header may include. So, for a library package named "mylib", just use
41
dnl      GCC_HEADER_STDINT(mylib-int.h)
42
dnl in configure.in and install that header file in Makefile.am along with
43
dnl the other headers (mylib.h).  The mylib-specific headers can simply
44
dnl use "#include <mylib-int.h>" to obtain the stdint-types.
45
dnl
46
dnl Remember, if the system already had a valid <stdint.h>, the generated
47
dnl file will include it directly. No need for fuzzy HAVE_STDINT_H things...
48
dnl
49
dnl @author  Guido Draheim <guidod@gmx.de>, Paolo Bonzini <bonzini@gnu.org>
50
 
51
AC_DEFUN([GCC_HEADER_STDINT],
52
[m4_define(_GCC_STDINT_H, m4_ifval($1, $1, _stdint.h))
53
 
54
inttype_headers=`echo inttypes.h sys/inttypes.h $2 | sed -e 's/,/ /g'`
55
 
56
acx_cv_header_stdint=stddef.h
57
acx_cv_header_stdint_kind="(already complete)"
58
for i in stdint.h $inttype_headers; do
59
  unset ac_cv_type_uintptr_t
60
  unset ac_cv_type_uintmax_t
61
  unset ac_cv_type_int_least32_t
62
  unset ac_cv_type_int_fast32_t
63
  unset ac_cv_type_uint64_t
64
  _AS_ECHO_N([looking for a compliant stdint.h in $i, ])
65
  AC_CHECK_TYPE(uintmax_t,[acx_cv_header_stdint=$i],continue,[#include <sys/types.h>
66
#include <$i>])
67
  AC_CHECK_TYPE(uintptr_t,,[acx_cv_header_stdint_kind="(mostly complete)"], [#include <sys/types.h>
68
#include <$i>])
69
  AC_CHECK_TYPE(int_least32_t,,[acx_cv_header_stdint_kind="(mostly complete)"], [#include <sys/types.h>
70
#include <$i>])
71
  AC_CHECK_TYPE(int_fast32_t,,[acx_cv_header_stdint_kind="(mostly complete)"], [#include <sys/types.h>
72
#include <$i>])
73
  AC_CHECK_TYPE(uint64_t,,[acx_cv_header_stdint_kind="(lacks uint64_t)"], [#include <sys/types.h>
74
#include <$i>])
75
  break
76
done
77
if test "$acx_cv_header_stdint" = stddef.h; then
78
  acx_cv_header_stdint_kind="(lacks uintmax_t)"
79
  for i in stdint.h $inttype_headers; do
80
    unset ac_cv_type_uintptr_t
81
    unset ac_cv_type_uint32_t
82
    unset ac_cv_type_uint64_t
83
    _AS_ECHO_N([looking for an incomplete stdint.h in $i, ])
84
    AC_CHECK_TYPE(uint32_t,[acx_cv_header_stdint=$i],continue,[#include <sys/types.h>
85
#include <$i>])
86
    AC_CHECK_TYPE(uint64_t,,,[#include <sys/types.h>
87
#include <$i>])
88
    AC_CHECK_TYPE(uintptr_t,,,[#include <sys/types.h>
89
#include <$i>])
90
    break
91
  done
92
fi
93
if test "$acx_cv_header_stdint" = stddef.h; then
94
  acx_cv_header_stdint_kind="(u_intXX_t style)"
95
  for i in sys/types.h $inttype_headers; do
96
    unset ac_cv_type_u_int32_t
97
    unset ac_cv_type_u_int64_t
98
    _AS_ECHO_N([looking for u_intXX_t types in $i, ])
99
    AC_CHECK_TYPE(u_int32_t,[acx_cv_header_stdint=$i],continue,[#include <sys/types.h>
100
#include <$i>])
101
    AC_CHECK_TYPE(u_int64_t,,,[#include <sys/types.h>
102
#include <$i>])
103
    break
104
  done
105
fi
106
if test "$acx_cv_header_stdint" = stddef.h; then
107
  acx_cv_header_stdint_kind="(using manual detection)"
108
fi
109
 
110
test -z "$ac_cv_type_uintptr_t" && ac_cv_type_uintptr_t=no
111
test -z "$ac_cv_type_uint64_t" && ac_cv_type_uint64_t=no
112
test -z "$ac_cv_type_u_int64_t" && ac_cv_type_u_int64_t=no
113
test -z "$ac_cv_type_int_least32_t" && ac_cv_type_int_least32_t=no
114
test -z "$ac_cv_type_int_fast32_t" && ac_cv_type_int_fast32_t=no
115
 
116
# ----------------- Summarize what we found so far
117
 
118
AC_MSG_CHECKING([what to include in _GCC_STDINT_H])
119
 
120
case `AS_BASENAME(_GCC_STDINT_H)` in
121
  stdint.h) AC_MSG_WARN([are you sure you want it there?]) ;;
122
  inttypes.h) AC_MSG_WARN([are you sure you want it there?]) ;;
123
  *) ;;
124
esac
125
 
126
AC_MSG_RESULT($acx_cv_header_stdint $acx_cv_header_stdint_kind)
127
 
128
# ----------------- done included file, check C basic types --------
129
 
130
# Lacking an uintptr_t?  Test size of void *
131
case "$acx_cv_header_stdint:$ac_cv_type_uintptr_t" in
132
  stddef.h:* | *:no) AC_CHECK_SIZEOF(void *) ;;
133
esac
134
 
135
# Lacking an uint64_t?  Test size of long
136
case "$acx_cv_header_stdint:$ac_cv_type_uint64_t:$ac_cv_type_u_int64_t" in
137
  stddef.h:*:* | *:no:no) AC_CHECK_SIZEOF(long) ;;
138
esac
139
 
140
if test $acx_cv_header_stdint = stddef.h; then
141
  # Lacking a good header?  Test size of everything and deduce all types.
142
  AC_CHECK_SIZEOF(int)
143
  AC_CHECK_SIZEOF(short)
144
  AC_CHECK_SIZEOF(char)
145
 
146
  AC_MSG_CHECKING(for type equivalent to int8_t)
147
  case "$ac_cv_sizeof_char" in
148
    1) acx_cv_type_int8_t=char ;;
149
    *) AC_MSG_ERROR(no 8-bit type, please report a bug)
150
  esac
151
  AC_MSG_RESULT($acx_cv_type_int8_t)
152
 
153
  AC_MSG_CHECKING(for type equivalent to int16_t)
154
  case "$ac_cv_sizeof_int:$ac_cv_sizeof_short" in
155
    2:*) acx_cv_type_int16_t=int ;;
156
    *:2) acx_cv_type_int16_t=short ;;
157
    *) AC_MSG_ERROR(no 16-bit type, please report a bug)
158
  esac
159
  AC_MSG_RESULT($acx_cv_type_int16_t)
160
 
161
  AC_MSG_CHECKING(for type equivalent to int32_t)
162
  case "$ac_cv_sizeof_int:$ac_cv_sizeof_long" in
163
    4:*) acx_cv_type_int32_t=int ;;
164
    *:4) acx_cv_type_int32_t=long ;;
165
    *) AC_MSG_ERROR(no 32-bit type, please report a bug)
166
  esac
167
  AC_MSG_RESULT($acx_cv_type_int32_t)
168
fi
169
 
170
# These tests are here to make the output prettier
171
 
172
if test "$ac_cv_type_uint64_t" != yes && test "$ac_cv_type_u_int64_t" != yes; then
173
  case "$ac_cv_sizeof_long" in
174
    8) acx_cv_type_int64_t=long ;;
175
  esac
176
  AC_MSG_CHECKING(for type equivalent to int64_t)
177
  AC_MSG_RESULT(${acx_cv_type_int64_t-'using preprocessor symbols'})
178
fi
179
 
180
# Now we can use the above types
181
 
182
if test "$ac_cv_type_uintptr_t" != yes; then
183
  AC_MSG_CHECKING(for type equivalent to intptr_t)
184
  case $ac_cv_sizeof_void_p in
185
    2) acx_cv_type_intptr_t=int16_t ;;
186
    4) acx_cv_type_intptr_t=int32_t ;;
187
    8) acx_cv_type_intptr_t=int64_t ;;
188
    *) AC_MSG_ERROR(no equivalent for intptr_t, please report a bug)
189
  esac
190
  AC_MSG_RESULT($acx_cv_type_intptr_t)
191
fi
192
 
193
# ----------------- done all checks, emit header -------------
194
AC_CONFIG_COMMANDS(_GCC_STDINT_H, [
195
if test "$GCC" = yes; then
196
  echo "/* generated for " `$CC --version | sed 1q` "*/" > tmp-stdint.h
197
else
198
  echo "/* generated for $CC */" > tmp-stdint.h
199
fi
200
 
201
sed 's/^ *//' >> tmp-stdint.h <<EOF
202
 
203
  #ifndef GCC_GENERATED_STDINT_H
204
  #define GCC_GENERATED_STDINT_H 1
205
 
206
  #include <sys/types.h>
207
EOF
208
 
209
if test "$acx_cv_header_stdint" != stdint.h; then
210
  echo "#include <stddef.h>" >> tmp-stdint.h
211
fi
212
if test "$acx_cv_header_stdint" != stddef.h; then
213
  echo "#include <$acx_cv_header_stdint>" >> tmp-stdint.h
214
fi
215
 
216
sed 's/^ *//' >> tmp-stdint.h <<EOF
217
  /* glibc uses these symbols as guards to prevent redefinitions.  */
218
  #ifdef __int8_t_defined
219
  #define _INT8_T
220
  #define _INT16_T
221
  #define _INT32_T
222
  #endif
223
  #ifdef __uint32_t_defined
224
  #define _UINT32_T
225
  #endif
226
 
227
EOF
228
 
229
# ----------------- done header, emit basic int types -------------
230
if test "$acx_cv_header_stdint" = stddef.h; then
231
  sed 's/^ *//' >> tmp-stdint.h <<EOF
232
 
233
    #ifndef _UINT8_T
234
    #define _UINT8_T
235
    #ifndef __uint8_t_defined
236
    #define __uint8_t_defined
237
    typedef unsigned $acx_cv_type_int8_t uint8_t;
238
    #endif
239
    #endif
240
 
241
    #ifndef _UINT16_T
242
    #define _UINT16_T
243
    #ifndef __uint16_t_defined
244
    #define __uint16_t_defined
245
    typedef unsigned $acx_cv_type_int16_t uint16_t;
246
    #endif
247
    #endif
248
 
249
    #ifndef _UINT32_T
250
    #define _UINT32_T
251
    #ifndef __uint32_t_defined
252
    #define __uint32_t_defined
253
    typedef unsigned $acx_cv_type_int32_t uint32_t;
254
    #endif
255
    #endif
256
 
257
    #ifndef _INT8_T
258
    #define _INT8_T
259
    #ifndef __int8_t_defined
260
    #define __int8_t_defined
261
    typedef $acx_cv_type_int8_t int8_t;
262
    #endif
263
    #endif
264
 
265
    #ifndef _INT16_T
266
    #define _INT16_T
267
    #ifndef __int16_t_defined
268
    #define __int16_t_defined
269
    typedef $acx_cv_type_int16_t int16_t;
270
    #endif
271
    #endif
272
 
273
    #ifndef _INT32_T
274
    #define _INT32_T
275
    #ifndef __int32_t_defined
276
    #define __int32_t_defined
277
    typedef $acx_cv_type_int32_t int32_t;
278
    #endif
279
    #endif
280
EOF
281
elif test "$ac_cv_type_u_int32_t" = yes; then
282
  sed 's/^ *//' >> tmp-stdint.h <<EOF
283
 
284
    /* int8_t int16_t int32_t defined by inet code, we do the u_intXX types */
285
    #ifndef _INT8_T
286
    #define _INT8_T
287
    #endif
288
    #ifndef _INT16_T
289
    #define _INT16_T
290
    #endif
291
    #ifndef _INT32_T
292
    #define _INT32_T
293
    #endif
294
 
295
    #ifndef _UINT8_T
296
    #define _UINT8_T
297
    #ifndef __uint8_t_defined
298
    #define __uint8_t_defined
299
    typedef u_int8_t uint8_t;
300
    #endif
301
    #endif
302
 
303
    #ifndef _UINT16_T
304
    #define _UINT16_T
305
    #ifndef __uint16_t_defined
306
    #define __uint16_t_defined
307
    typedef u_int16_t uint16_t;
308
    #endif
309
    #endif
310
 
311
    #ifndef _UINT32_T
312
    #define _UINT32_T
313
    #ifndef __uint32_t_defined
314
    #define __uint32_t_defined
315
    typedef u_int32_t uint32_t;
316
    #endif
317
    #endif
318
EOF
319
else
320
  sed 's/^ *//' >> tmp-stdint.h <<EOF
321
 
322
    /* Some systems have guard macros to prevent redefinitions, define them.  */
323
    #ifndef _INT8_T
324
    #define _INT8_T
325
    #endif
326
    #ifndef _INT16_T
327
    #define _INT16_T
328
    #endif
329
    #ifndef _INT32_T
330
    #define _INT32_T
331
    #endif
332
    #ifndef _UINT8_T
333
    #define _UINT8_T
334
    #endif
335
    #ifndef _UINT16_T
336
    #define _UINT16_T
337
    #endif
338
    #ifndef _UINT32_T
339
    #define _UINT32_T
340
    #endif
341
EOF
342
fi
343
 
344
# ------------- done basic int types, emit int64_t types ------------
345
if test "$ac_cv_type_uint64_t" = yes; then
346
  sed 's/^ *//' >> tmp-stdint.h <<EOF
347
 
348
    /* system headers have good uint64_t and int64_t */
349
    #ifndef _INT64_T
350
    #define _INT64_T
351
    #endif
352
    #ifndef _UINT64_T
353
    #define _UINT64_T
354
    #endif
355
EOF
356
elif test "$ac_cv_type_u_int64_t" = yes; then
357
  sed 's/^ *//' >> tmp-stdint.h <<EOF
358
 
359
    /* system headers have an u_int64_t (and int64_t) */
360
    #ifndef _INT64_T
361
    #define _INT64_T
362
    #endif
363
    #ifndef _UINT64_T
364
    #define _UINT64_T
365
    #ifndef __uint64_t_defined
366
    #define __uint64_t_defined
367
    typedef u_int64_t uint64_t;
368
    #endif
369
    #endif
370
EOF
371
elif test -n "$acx_cv_type_int64_t"; then
372
  sed 's/^ *//' >> tmp-stdint.h <<EOF
373
 
374
    /* architecture has a 64-bit type, $acx_cv_type_int64_t */
375
    #ifndef _INT64_T
376
    #define _INT64_T
377
    typedef $acx_cv_type_int64_t int64_t;
378
    #endif
379
    #ifndef _UINT64_T
380
    #define _UINT64_T
381
    #ifndef __uint64_t_defined
382
    #define __uint64_t_defined
383
    typedef unsigned $acx_cv_type_int64_t uint64_t;
384
    #endif
385
    #endif
386
EOF
387
else
388
  sed 's/^ *//' >> tmp-stdint.h <<EOF
389
 
390
    /* some common heuristics for int64_t, using compiler-specific tests */
391
    #if defined __STDC_VERSION__ && (__STDC_VERSION__-0) >= 199901L
392
    #ifndef _INT64_T
393
    #define _INT64_T
394
    #ifndef __int64_t_defined
395
    typedef long long int64_t;
396
    #endif
397
    #endif
398
    #ifndef _UINT64_T
399
    #define _UINT64_T
400
    typedef unsigned long long uint64_t;
401
    #endif
402
 
403
    #elif defined __GNUC__ && defined (__STDC__) && __STDC__-0
404
    /* NextStep 2.0 cc is really gcc 1.93 but it defines __GNUC__ = 2 and
405
       does not implement __extension__.  But that compiler doesn't define
406
       __GNUC_MINOR__.  */
407
    # if __GNUC__ < 2 || (__NeXT__ && !__GNUC_MINOR__)
408
    # define __extension__
409
    # endif
410
 
411
    # ifndef _INT64_T
412
    # define _INT64_T
413
    __extension__ typedef long long int64_t;
414
    # endif
415
    # ifndef _UINT64_T
416
    # define _UINT64_T
417
    __extension__ typedef unsigned long long uint64_t;
418
    # endif
419
 
420
    #elif !defined __STRICT_ANSI__
421
    # if defined _MSC_VER || defined __WATCOMC__ || defined __BORLANDC__
422
 
423
    #  ifndef _INT64_T
424
    #  define _INT64_T
425
    typedef __int64 int64_t;
426
    #  endif
427
    #  ifndef _UINT64_T
428
    #  define _UINT64_T
429
    typedef unsigned __int64 uint64_t;
430
    #  endif
431
    # endif /* compiler */
432
 
433
    #endif /* ANSI version */
434
EOF
435
fi
436
 
437
# ------------- done int64_t types, emit intptr types ------------
438
if test "$ac_cv_type_uintptr_t" != yes; then
439
  sed 's/^ *//' >> tmp-stdint.h <<EOF
440
 
441
    /* Define intptr_t based on sizeof(void*) = $ac_cv_sizeof_void_p */
442
    #ifndef __uintptr_t_defined
443
    typedef u$acx_cv_type_intptr_t uintptr_t;
444
    #endif
445
    #ifndef __intptr_t_defined
446
    typedef $acx_cv_type_intptr_t  intptr_t;
447
    #endif
448
EOF
449
fi
450
 
451
# ------------- done intptr types, emit int_least types ------------
452
if test "$ac_cv_type_int_least32_t" != yes; then
453
  sed 's/^ *//' >> tmp-stdint.h <<EOF
454
 
455
    /* Define int_least types */
456
    typedef int8_t     int_least8_t;
457
    typedef int16_t    int_least16_t;
458
    typedef int32_t    int_least32_t;
459
    #ifdef _INT64_T
460
    typedef int64_t    int_least64_t;
461
    #endif
462
 
463
    typedef uint8_t    uint_least8_t;
464
    typedef uint16_t   uint_least16_t;
465
    typedef uint32_t   uint_least32_t;
466
    #ifdef _UINT64_T
467
    typedef uint64_t   uint_least64_t;
468
    #endif
469
EOF
470
fi
471
 
472
# ------------- done intptr types, emit int_fast types ------------
473
if test "$ac_cv_type_int_fast32_t" != yes; then
474
  dnl NOTE: The following code assumes that sizeof (int) > 1.
475
  dnl Fix when strange machines are reported.
476
  sed 's/^ *//' >> tmp-stdint.h <<EOF
477
 
478
    /* Define int_fast types.  short is often slow */
479
    typedef int8_t       int_fast8_t;
480
    typedef int          int_fast16_t;
481
    typedef int32_t      int_fast32_t;
482
    #ifdef _INT64_T
483
    typedef int64_t      int_fast64_t;
484
    #endif
485
 
486
    typedef uint8_t      uint_fast8_t;
487
    typedef unsigned int uint_fast16_t;
488
    typedef uint32_t     uint_fast32_t;
489
    #ifdef _UINT64_T
490
    typedef uint64_t     uint_fast64_t;
491
    #endif
492
EOF
493
fi
494
 
495
if test "$ac_cv_type_uintmax_t" != yes; then
496
  sed 's/^ *//' >> tmp-stdint.h <<EOF
497
 
498
    /* Define intmax based on what we found */
499
    #ifdef _INT64_T
500
    typedef int64_t       intmax_t;
501
    #else
502
    typedef long          intmax_t;
503
    #endif
504
    #ifdef _UINT64_T
505
    typedef uint64_t      uintmax_t;
506
    #else
507
    typedef unsigned long uintmax_t;
508
    #endif
509
EOF
510
fi
511
 
512
sed 's/^ *//' >> tmp-stdint.h <<EOF
513
 
514
  #endif /* GCC_GENERATED_STDINT_H */
515
EOF
516
 
517
if test -r ]_GCC_STDINT_H[ && cmp -s tmp-stdint.h ]_GCC_STDINT_H[; then
518
  rm -f tmp-stdint.h
519
else
520
  mv -f tmp-stdint.h ]_GCC_STDINT_H[
521
fi
522
 
523
], [
524
GCC="$GCC"
525
CC="$CC"
526
acx_cv_header_stdint="$acx_cv_header_stdint"
527
acx_cv_type_int8_t="$acx_cv_type_int8_t"
528
acx_cv_type_int16_t="$acx_cv_type_int16_t"
529
acx_cv_type_int32_t="$acx_cv_type_int32_t"
530
acx_cv_type_int64_t="$acx_cv_type_int64_t"
531
acx_cv_type_intptr_t="$acx_cv_type_intptr_t"
532
ac_cv_type_uintmax_t="$ac_cv_type_uintmax_t"
533
ac_cv_type_uintptr_t="$ac_cv_type_uintptr_t"
534
ac_cv_type_uint64_t="$ac_cv_type_uint64_t"
535
ac_cv_type_u_int64_t="$ac_cv_type_u_int64_t"
536
ac_cv_type_u_int32_t="$ac_cv_type_u_int32_t"
537
ac_cv_type_int_least32_t="$ac_cv_type_int_least32_t"
538
ac_cv_type_int_fast32_t="$ac_cv_type_int_fast32_t"
539
ac_cv_sizeof_void_p="$ac_cv_sizeof_void_p"
540
])
541
 
542
])

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