Annotation of embedaddon/libiconv/srcm4/stdint.m4, revision 1.1.1.1
1.1 misho 1: # stdint.m4 serial 34
2: dnl Copyright (C) 2001-2009 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: [dnl Determine whether the various *_MIN, *_MAX macros are usable
205: dnl in preprocessor expression. We could do it by compiling a test
206: dnl program for each of these macros. It is faster to run a program
207: dnl that inspects the macro expansion.
208: dnl This detects a bug on HP-UX 11.23/ia64.
209: AC_RUN_IFELSE([
210: AC_LANG_PROGRAM([[
211: #define __STDC_LIMIT_MACROS 1 /* to make it work also in C++ mode */
212: #define __STDC_CONSTANT_MACROS 1 /* to make it work also in C++ mode */
213: #define _GL_JUST_INCLUDE_SYSTEM_STDINT_H 1 /* work if build isn't clean */
214: #include <stdint.h>
215: ]
216: gl_STDINT_INCLUDES
217: [
218: #include <stdio.h>
219: #include <string.h>
220: #define MVAL(macro) MVAL1(macro)
221: #define MVAL1(expression) #expression
222: static const char *macro_values[] =
223: {
224: #ifdef INT8_MAX
225: MVAL (INT8_MAX),
226: #endif
227: #ifdef INT16_MAX
228: MVAL (INT16_MAX),
229: #endif
230: #ifdef INT32_MAX
231: MVAL (INT32_MAX),
232: #endif
233: #ifdef INT64_MAX
234: MVAL (INT64_MAX),
235: #endif
236: #ifdef UINT8_MAX
237: MVAL (UINT8_MAX),
238: #endif
239: #ifdef UINT16_MAX
240: MVAL (UINT16_MAX),
241: #endif
242: #ifdef UINT32_MAX
243: MVAL (UINT32_MAX),
244: #endif
245: #ifdef UINT64_MAX
246: MVAL (UINT64_MAX),
247: #endif
248: NULL
249: };
250: ]], [[
251: const char **mv;
252: for (mv = macro_values; *mv != NULL; mv++)
253: {
254: const char *value = *mv;
255: /* Test whether it looks like a cast expression. */
256: if (strncmp (value, "((unsigned int)"/*)*/, 15) == 0
257: || strncmp (value, "((unsigned short)"/*)*/, 17) == 0
258: || strncmp (value, "((unsigned char)"/*)*/, 16) == 0
259: || strncmp (value, "((int)"/*)*/, 6) == 0
260: || strncmp (value, "((signed short)"/*)*/, 15) == 0
261: || strncmp (value, "((signed char)"/*)*/, 14) == 0)
262: return 1;
263: }
264: return 0;
265: ]])],
266: [gl_cv_header_working_stdint_h=yes],
267: [],
268: [dnl When cross-compiling, assume it works.
269: gl_cv_header_working_stdint_h=yes
270: ])
271: ])
272: ])
273: fi
274: if test "$gl_cv_header_working_stdint_h" = yes; then
275: STDINT_H=
276: else
277: dnl Check for <sys/inttypes.h>, and for
278: dnl <sys/bitypes.h> (used in Linux libc4 >= 4.6.7 and libc5).
279: AC_CHECK_HEADERS([sys/inttypes.h sys/bitypes.h])
280: if test $ac_cv_header_sys_inttypes_h = yes; then
281: HAVE_SYS_INTTYPES_H=1
282: else
283: HAVE_SYS_INTTYPES_H=0
284: fi
285: AC_SUBST([HAVE_SYS_INTTYPES_H])
286: if test $ac_cv_header_sys_bitypes_h = yes; then
287: HAVE_SYS_BITYPES_H=1
288: else
289: HAVE_SYS_BITYPES_H=0
290: fi
291: AC_SUBST([HAVE_SYS_BITYPES_H])
292:
293: dnl Check for <wchar.h> (missing in Linux uClibc when built without wide
294: dnl character support).
295: AC_CHECK_HEADERS_ONCE([wchar.h])
296:
297: gl_STDINT_TYPE_PROPERTIES
298: STDINT_H=stdint.h
299: fi
300: AC_SUBST([STDINT_H])
301: ])
302:
303: dnl gl_STDINT_BITSIZEOF(TYPES, INCLUDES)
304: dnl Determine the size of each of the given types in bits.
305: AC_DEFUN([gl_STDINT_BITSIZEOF],
306: [
307: dnl Use a shell loop, to avoid bloating configure, and
308: dnl - extra AH_TEMPLATE calls, so that autoheader knows what to put into
309: dnl config.h.in,
310: dnl - extra AC_SUBST calls, so that the right substitutions are made.
311: m4_foreach_w([gltype], [$1],
312: [AH_TEMPLATE([BITSIZEOF_]translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_]),
313: [Define to the number of bits in type ']gltype['.])])
314: for gltype in $1 ; do
315: AC_CACHE_CHECK([for bit size of $gltype], [gl_cv_bitsizeof_${gltype}],
316: [AC_COMPUTE_INT([result], [sizeof ($gltype) * CHAR_BIT],
317: [$2
318: #include <limits.h>], [result=unknown])
319: eval gl_cv_bitsizeof_${gltype}=\$result
320: ])
321: eval result=\$gl_cv_bitsizeof_${gltype}
322: if test $result = unknown; then
323: dnl Use a nonempty default, because some compilers, such as IRIX 5 cc,
324: dnl do a syntax check even on unused #if conditions and give an error
325: dnl on valid C code like this:
326: dnl #if 0
327: dnl # if > 32
328: dnl # endif
329: dnl #endif
330: result=0
331: fi
332: GLTYPE=`echo "$gltype" | tr 'abcdefghijklmnopqrstuvwxyz ' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'`
333: AC_DEFINE_UNQUOTED([BITSIZEOF_${GLTYPE}], [$result])
334: eval BITSIZEOF_${GLTYPE}=\$result
335: done
336: m4_foreach_w([gltype], [$1],
337: [AC_SUBST([BITSIZEOF_]translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_]))])
338: ])
339:
340: dnl gl_CHECK_TYPES_SIGNED(TYPES, INCLUDES)
341: dnl Determine the signedness of each of the given types.
342: dnl Define HAVE_SIGNED_TYPE if type is signed.
343: AC_DEFUN([gl_CHECK_TYPES_SIGNED],
344: [
345: dnl Use a shell loop, to avoid bloating configure, and
346: dnl - extra AH_TEMPLATE calls, so that autoheader knows what to put into
347: dnl config.h.in,
348: dnl - extra AC_SUBST calls, so that the right substitutions are made.
349: m4_foreach_w([gltype], [$1],
350: [AH_TEMPLATE([HAVE_SIGNED_]translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_]),
351: [Define to 1 if ']gltype[' is a signed integer type.])])
352: for gltype in $1 ; do
353: AC_CACHE_CHECK([whether $gltype is signed], [gl_cv_type_${gltype}_signed],
354: [AC_COMPILE_IFELSE(
355: [AC_LANG_PROGRAM([$2[
356: int verify[2 * (($gltype) -1 < ($gltype) 0) - 1];]])],
357: result=yes, result=no)
358: eval gl_cv_type_${gltype}_signed=\$result
359: ])
360: eval result=\$gl_cv_type_${gltype}_signed
361: GLTYPE=`echo $gltype | tr 'abcdefghijklmnopqrstuvwxyz ' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'`
362: if test "$result" = yes; then
363: AC_DEFINE_UNQUOTED([HAVE_SIGNED_${GLTYPE}], [1])
364: eval HAVE_SIGNED_${GLTYPE}=1
365: else
366: eval HAVE_SIGNED_${GLTYPE}=0
367: fi
368: done
369: m4_foreach_w([gltype], [$1],
370: [AC_SUBST([HAVE_SIGNED_]translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_]))])
371: ])
372:
373: dnl gl_INTEGER_TYPE_SUFFIX(TYPES, INCLUDES)
374: dnl Determine the suffix to use for integer constants of the given types.
375: dnl Define t_SUFFIX for each such type.
376: AC_DEFUN([gl_INTEGER_TYPE_SUFFIX],
377: [
378: dnl Use a shell loop, to avoid bloating configure, and
379: dnl - extra AH_TEMPLATE calls, so that autoheader knows what to put into
380: dnl config.h.in,
381: dnl - extra AC_SUBST calls, so that the right substitutions are made.
382: m4_foreach_w([gltype], [$1],
383: [AH_TEMPLATE(translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_])[_SUFFIX],
384: [Define to l, ll, u, ul, ull, etc., as suitable for
385: constants of type ']gltype['.])])
386: for gltype in $1 ; do
387: AC_CACHE_CHECK([for $gltype integer literal suffix],
388: [gl_cv_type_${gltype}_suffix],
389: [eval gl_cv_type_${gltype}_suffix=no
390: eval result=\$gl_cv_type_${gltype}_signed
391: if test "$result" = yes; then
392: glsufu=
393: else
394: glsufu=u
395: fi
396: for glsuf in "$glsufu" ${glsufu}l ${glsufu}ll ${glsufu}i64; do
397: case $glsuf in
398: '') gltype1='int';;
399: l) gltype1='long int';;
400: ll) gltype1='long long int';;
401: i64) gltype1='__int64';;
402: u) gltype1='unsigned int';;
403: ul) gltype1='unsigned long int';;
404: ull) gltype1='unsigned long long int';;
405: ui64)gltype1='unsigned __int64';;
406: esac
407: AC_COMPILE_IFELSE(
408: [AC_LANG_PROGRAM([$2[
409: extern $gltype foo;
410: extern $gltype1 foo;]])],
411: [eval gl_cv_type_${gltype}_suffix=\$glsuf])
412: eval result=\$gl_cv_type_${gltype}_suffix
413: test "$result" != no && break
414: done])
415: GLTYPE=`echo $gltype | tr 'abcdefghijklmnopqrstuvwxyz ' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'`
416: eval result=\$gl_cv_type_${gltype}_suffix
417: test "$result" = no && result=
418: eval ${GLTYPE}_SUFFIX=\$result
419: AC_DEFINE_UNQUOTED([${GLTYPE}_SUFFIX], [$result])
420: done
421: m4_foreach_w([gltype], [$1],
422: [AC_SUBST(translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_])[_SUFFIX])])
423: ])
424:
425: dnl gl_STDINT_INCLUDES
426: AC_DEFUN([gl_STDINT_INCLUDES],
427: [[
428: /* BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
429: included before <wchar.h>. */
430: #include <stddef.h>
431: #include <signal.h>
432: #if HAVE_WCHAR_H
433: # include <stdio.h>
434: # include <time.h>
435: # include <wchar.h>
436: #endif
437: ]])
438:
439: dnl gl_STDINT_TYPE_PROPERTIES
440: dnl Compute HAVE_SIGNED_t, BITSIZEOF_t and t_SUFFIX, for all the types t
441: dnl of interest to stdint.in.h.
442: AC_DEFUN([gl_STDINT_TYPE_PROPERTIES],
443: [
444: AC_REQUIRE([gl_MULTIARCH])
445: if test $APPLE_UNIVERSAL_BUILD = 0; then
446: gl_STDINT_BITSIZEOF([ptrdiff_t size_t],
447: [gl_STDINT_INCLUDES])
448: fi
449: gl_STDINT_BITSIZEOF([sig_atomic_t wchar_t wint_t],
450: [gl_STDINT_INCLUDES])
451: gl_CHECK_TYPES_SIGNED([sig_atomic_t wchar_t wint_t],
452: [gl_STDINT_INCLUDES])
453: gl_cv_type_ptrdiff_t_signed=yes
454: gl_cv_type_size_t_signed=no
455: if test $APPLE_UNIVERSAL_BUILD = 0; then
456: gl_INTEGER_TYPE_SUFFIX([ptrdiff_t size_t],
457: [gl_STDINT_INCLUDES])
458: fi
459: gl_INTEGER_TYPE_SUFFIX([sig_atomic_t wchar_t wint_t],
460: [gl_STDINT_INCLUDES])
461: ])
462:
463: dnl Autoconf >= 2.61 has AC_COMPUTE_INT built-in.
464: dnl Remove this when we can assume autoconf >= 2.61.
465: m4_ifdef([AC_COMPUTE_INT], [], [
466: AC_DEFUN([AC_COMPUTE_INT], [_AC_COMPUTE_INT([$2],[$1],[$3],[$4])])
467: ])
468:
469: # Hey Emacs!
470: # Local Variables:
471: # indent-tabs-mode: nil
472: # End:
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