1# stdint.m4 serial 54 2dnl Copyright (C) 2001-2020 Free Software Foundation, Inc. 3dnl This file is free software; the Free Software Foundation 4dnl gives unlimited permission to copy and/or distribute it, 5dnl with or without modifications, as long as this notice is preserved. 6 7dnl From Paul Eggert and Bruno Haible. 8dnl Test whether <stdint.h> is supported or must be substituted. 9 10AC_PREREQ([2.61]) 11 12AC_DEFUN_ONCE([gl_STDINT_H], 13[ 14 AC_PREREQ([2.59])dnl 15 AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles 16 17 AC_REQUIRE([gl_LIMITS_H]) 18 AC_REQUIRE([gt_TYPE_WINT_T]) 19 20 dnl For backward compatibility. Some packages may still be testing these 21 dnl macros. 22 AC_DEFINE([HAVE_LONG_LONG_INT], [1], 23 [Define to 1 if the system has the type 'long long int'.]) 24 AC_DEFINE([HAVE_UNSIGNED_LONG_LONG_INT], [1], 25 [Define to 1 if the system has the type 'unsigned long long int'.]) 26 27 dnl Check for <wchar.h>, in the same way as gl_WCHAR_H does. 28 AC_CHECK_HEADERS_ONCE([wchar.h]) 29 if test $ac_cv_header_wchar_h = yes; then 30 HAVE_WCHAR_H=1 31 else 32 HAVE_WCHAR_H=0 33 fi 34 AC_SUBST([HAVE_WCHAR_H]) 35 36 dnl Check for <inttypes.h>. 37 dnl AC_INCLUDES_DEFAULT defines $ac_cv_header_inttypes_h. 38 if test $ac_cv_header_inttypes_h = yes; then 39 HAVE_INTTYPES_H=1 40 else 41 HAVE_INTTYPES_H=0 42 fi 43 AC_SUBST([HAVE_INTTYPES_H]) 44 45 dnl Check for <sys/types.h>. 46 dnl AC_INCLUDES_DEFAULT defines $ac_cv_header_sys_types_h. 47 if test $ac_cv_header_sys_types_h = yes; then 48 HAVE_SYS_TYPES_H=1 49 else 50 HAVE_SYS_TYPES_H=0 51 fi 52 AC_SUBST([HAVE_SYS_TYPES_H]) 53 54 gl_CHECK_NEXT_HEADERS([stdint.h]) 55 if test $ac_cv_header_stdint_h = yes; then 56 HAVE_STDINT_H=1 57 else 58 HAVE_STDINT_H=0 59 fi 60 AC_SUBST([HAVE_STDINT_H]) 61 62 dnl Now see whether we need a substitute <stdint.h>. 63 if test $ac_cv_header_stdint_h = yes; then 64 AC_CACHE_CHECK([whether stdint.h conforms to C99], 65 [gl_cv_header_working_stdint_h], 66 [gl_cv_header_working_stdint_h=no 67 AC_COMPILE_IFELSE([ 68 AC_LANG_PROGRAM([[ 69#define _GL_JUST_INCLUDE_SYSTEM_STDINT_H 1 /* work if build isn't clean */ 70#define __STDC_CONSTANT_MACROS 1 71#define __STDC_LIMIT_MACROS 1 72#include <stdint.h> 73/* Dragonfly defines WCHAR_MIN, WCHAR_MAX only in <wchar.h>. */ 74#if !(defined WCHAR_MIN && defined WCHAR_MAX) 75#error "WCHAR_MIN, WCHAR_MAX not defined in <stdint.h>" 76#endif 77] 78gl_STDINT_INCLUDES 79[ 80#ifdef INT8_MAX 81int8_t a1 = INT8_MAX; 82int8_t a1min = INT8_MIN; 83#endif 84#ifdef INT16_MAX 85int16_t a2 = INT16_MAX; 86int16_t a2min = INT16_MIN; 87#endif 88#ifdef INT32_MAX 89int32_t a3 = INT32_MAX; 90int32_t a3min = INT32_MIN; 91#endif 92#ifdef INT64_MAX 93int64_t a4 = INT64_MAX; 94int64_t a4min = INT64_MIN; 95#endif 96#ifdef UINT8_MAX 97uint8_t b1 = UINT8_MAX; 98#else 99typedef int b1[(unsigned char) -1 != 255 ? 1 : -1]; 100#endif 101#ifdef UINT16_MAX 102uint16_t b2 = UINT16_MAX; 103#endif 104#ifdef UINT32_MAX 105uint32_t b3 = UINT32_MAX; 106#endif 107#ifdef UINT64_MAX 108uint64_t b4 = UINT64_MAX; 109#endif 110int_least8_t c1 = INT8_C (0x7f); 111int_least8_t c1max = INT_LEAST8_MAX; 112int_least8_t c1min = INT_LEAST8_MIN; 113int_least16_t c2 = INT16_C (0x7fff); 114int_least16_t c2max = INT_LEAST16_MAX; 115int_least16_t c2min = INT_LEAST16_MIN; 116int_least32_t c3 = INT32_C (0x7fffffff); 117int_least32_t c3max = INT_LEAST32_MAX; 118int_least32_t c3min = INT_LEAST32_MIN; 119int_least64_t c4 = INT64_C (0x7fffffffffffffff); 120int_least64_t c4max = INT_LEAST64_MAX; 121int_least64_t c4min = INT_LEAST64_MIN; 122uint_least8_t d1 = UINT8_C (0xff); 123uint_least8_t d1max = UINT_LEAST8_MAX; 124uint_least16_t d2 = UINT16_C (0xffff); 125uint_least16_t d2max = UINT_LEAST16_MAX; 126uint_least32_t d3 = UINT32_C (0xffffffff); 127uint_least32_t d3max = UINT_LEAST32_MAX; 128uint_least64_t d4 = UINT64_C (0xffffffffffffffff); 129uint_least64_t d4max = UINT_LEAST64_MAX; 130int_fast8_t e1 = INT_FAST8_MAX; 131int_fast8_t e1min = INT_FAST8_MIN; 132int_fast16_t e2 = INT_FAST16_MAX; 133int_fast16_t e2min = INT_FAST16_MIN; 134int_fast32_t e3 = INT_FAST32_MAX; 135int_fast32_t e3min = INT_FAST32_MIN; 136int_fast64_t e4 = INT_FAST64_MAX; 137int_fast64_t e4min = INT_FAST64_MIN; 138uint_fast8_t f1 = UINT_FAST8_MAX; 139uint_fast16_t f2 = UINT_FAST16_MAX; 140uint_fast32_t f3 = UINT_FAST32_MAX; 141uint_fast64_t f4 = UINT_FAST64_MAX; 142#ifdef INTPTR_MAX 143intptr_t g = INTPTR_MAX; 144intptr_t gmin = INTPTR_MIN; 145#endif 146#ifdef UINTPTR_MAX 147uintptr_t h = UINTPTR_MAX; 148#endif 149intmax_t i = INTMAX_MAX; 150uintmax_t j = UINTMAX_MAX; 151 152/* Check that SIZE_MAX has the correct type, if possible. */ 153#if 201112 <= __STDC_VERSION__ 154int k = _Generic (SIZE_MAX, size_t: 0); 155#elif (2 <= __GNUC__ || defined __IBM__TYPEOF__ \ 156 || (0x5110 <= __SUNPRO_C && !__STDC__)) 157extern size_t k; 158extern __typeof__ (SIZE_MAX) k; 159#endif 160 161#include <limits.h> /* for CHAR_BIT */ 162#define TYPE_MINIMUM(t) \ 163 ((t) ((t) 0 < (t) -1 ? (t) 0 : ~ TYPE_MAXIMUM (t))) 164#define TYPE_MAXIMUM(t) \ 165 ((t) ((t) 0 < (t) -1 \ 166 ? (t) -1 \ 167 : ((((t) 1 << (sizeof (t) * CHAR_BIT - 2)) - 1) * 2 + 1))) 168struct s { 169 int check_PTRDIFF: 170 PTRDIFF_MIN == TYPE_MINIMUM (ptrdiff_t) 171 && PTRDIFF_MAX == TYPE_MAXIMUM (ptrdiff_t) 172 ? 1 : -1; 173 /* Detect bug in FreeBSD 6.0 / ia64. */ 174 int check_SIG_ATOMIC: 175 SIG_ATOMIC_MIN == TYPE_MINIMUM (sig_atomic_t) 176 && SIG_ATOMIC_MAX == TYPE_MAXIMUM (sig_atomic_t) 177 ? 1 : -1; 178 int check_SIZE: SIZE_MAX == TYPE_MAXIMUM (size_t) ? 1 : -1; 179 int check_WCHAR: 180 WCHAR_MIN == TYPE_MINIMUM (wchar_t) 181 && WCHAR_MAX == TYPE_MAXIMUM (wchar_t) 182 ? 1 : -1; 183 /* Detect bug in mingw. */ 184 int check_WINT: 185 WINT_MIN == TYPE_MINIMUM (wint_t) 186 && WINT_MAX == TYPE_MAXIMUM (wint_t) 187 ? 1 : -1; 188 189 /* Detect bugs in glibc 2.4 and Solaris 10 stdint.h, among others. */ 190 int check_UINT8_C: 191 (-1 < UINT8_C (0)) == (-1 < (uint_least8_t) 0) ? 1 : -1; 192 int check_UINT16_C: 193 (-1 < UINT16_C (0)) == (-1 < (uint_least16_t) 0) ? 1 : -1; 194 195 /* Detect bugs in OpenBSD 3.9 stdint.h. */ 196#ifdef UINT8_MAX 197 int check_uint8: (uint8_t) -1 == UINT8_MAX ? 1 : -1; 198#endif 199#ifdef UINT16_MAX 200 int check_uint16: (uint16_t) -1 == UINT16_MAX ? 1 : -1; 201#endif 202#ifdef UINT32_MAX 203 int check_uint32: (uint32_t) -1 == UINT32_MAX ? 1 : -1; 204#endif 205#ifdef UINT64_MAX 206 int check_uint64: (uint64_t) -1 == UINT64_MAX ? 1 : -1; 207#endif 208 int check_uint_least8: (uint_least8_t) -1 == UINT_LEAST8_MAX ? 1 : -1; 209 int check_uint_least16: (uint_least16_t) -1 == UINT_LEAST16_MAX ? 1 : -1; 210 int check_uint_least32: (uint_least32_t) -1 == UINT_LEAST32_MAX ? 1 : -1; 211 int check_uint_least64: (uint_least64_t) -1 == UINT_LEAST64_MAX ? 1 : -1; 212 int check_uint_fast8: (uint_fast8_t) -1 == UINT_FAST8_MAX ? 1 : -1; 213 int check_uint_fast16: (uint_fast16_t) -1 == UINT_FAST16_MAX ? 1 : -1; 214 int check_uint_fast32: (uint_fast32_t) -1 == UINT_FAST32_MAX ? 1 : -1; 215 int check_uint_fast64: (uint_fast64_t) -1 == UINT_FAST64_MAX ? 1 : -1; 216 int check_uintptr: (uintptr_t) -1 == UINTPTR_MAX ? 1 : -1; 217 int check_uintmax: (uintmax_t) -1 == UINTMAX_MAX ? 1 : -1; 218 int check_size: (size_t) -1 == SIZE_MAX ? 1 : -1; 219}; 220 ]])], 221 [dnl Determine whether the various *_MIN, *_MAX macros are usable 222 dnl in preprocessor expression. We could do it by compiling a test 223 dnl program for each of these macros. It is faster to run a program 224 dnl that inspects the macro expansion. 225 dnl This detects a bug on HP-UX 11.23/ia64. 226 AC_RUN_IFELSE([ 227 AC_LANG_PROGRAM([[ 228#define _GL_JUST_INCLUDE_SYSTEM_STDINT_H 1 /* work if build isn't clean */ 229#define __STDC_CONSTANT_MACROS 1 230#define __STDC_LIMIT_MACROS 1 231#include <stdint.h> 232] 233gl_STDINT_INCLUDES 234[ 235#include <stdio.h> 236#include <string.h> 237#define MVAL(macro) MVAL1(macro) 238#define MVAL1(expression) #expression 239static const char *macro_values[] = 240 { 241#ifdef INT8_MAX 242 MVAL (INT8_MAX), 243#endif 244#ifdef INT16_MAX 245 MVAL (INT16_MAX), 246#endif 247#ifdef INT32_MAX 248 MVAL (INT32_MAX), 249#endif 250#ifdef INT64_MAX 251 MVAL (INT64_MAX), 252#endif 253#ifdef UINT8_MAX 254 MVAL (UINT8_MAX), 255#endif 256#ifdef UINT16_MAX 257 MVAL (UINT16_MAX), 258#endif 259#ifdef UINT32_MAX 260 MVAL (UINT32_MAX), 261#endif 262#ifdef UINT64_MAX 263 MVAL (UINT64_MAX), 264#endif 265 NULL 266 }; 267]], [[ 268 const char **mv; 269 for (mv = macro_values; *mv != NULL; mv++) 270 { 271 const char *value = *mv; 272 /* Test whether it looks like a cast expression. */ 273 if (strncmp (value, "((unsigned int)"/*)*/, 15) == 0 274 || strncmp (value, "((unsigned short)"/*)*/, 17) == 0 275 || strncmp (value, "((unsigned char)"/*)*/, 16) == 0 276 || strncmp (value, "((int)"/*)*/, 6) == 0 277 || strncmp (value, "((signed short)"/*)*/, 15) == 0 278 || strncmp (value, "((signed char)"/*)*/, 14) == 0) 279 return mv - macro_values + 1; 280 } 281 return 0; 282]])], 283 [gl_cv_header_working_stdint_h=yes], 284 [], 285 [case "$host_os" in 286 # Guess yes on native Windows. 287 mingw*) gl_cv_header_working_stdint_h="guessing yes" ;; 288 # In general, assume it works. 289 *) gl_cv_header_working_stdint_h="guessing yes" ;; 290 esac 291 ]) 292 ]) 293 ]) 294 fi 295 296 HAVE_C99_STDINT_H=0 297 HAVE_SYS_BITYPES_H=0 298 HAVE_SYS_INTTYPES_H=0 299 STDINT_H=stdint.h 300 case "$gl_cv_header_working_stdint_h" in 301 *yes) 302 HAVE_C99_STDINT_H=1 303 dnl Now see whether the system <stdint.h> works without 304 dnl __STDC_CONSTANT_MACROS/__STDC_LIMIT_MACROS defined. 305 AC_CACHE_CHECK([whether stdint.h predates C++11], 306 [gl_cv_header_stdint_predates_cxx11_h], 307 [gl_cv_header_stdint_predates_cxx11_h=yes 308 AC_COMPILE_IFELSE([ 309 AC_LANG_PROGRAM([[ 310#define _GL_JUST_INCLUDE_SYSTEM_STDINT_H 1 /* work if build isn't clean */ 311#include <stdint.h> 312] 313gl_STDINT_INCLUDES 314[ 315intmax_t im = INTMAX_MAX; 316int32_t i32 = INT32_C (0x7fffffff); 317 ]])], 318 [gl_cv_header_stdint_predates_cxx11_h=no])]) 319 320 if test "$gl_cv_header_stdint_predates_cxx11_h" = yes; then 321 AC_DEFINE([__STDC_CONSTANT_MACROS], [1], 322 [Define to 1 if the system <stdint.h> predates C++11.]) 323 AC_DEFINE([__STDC_LIMIT_MACROS], [1], 324 [Define to 1 if the system <stdint.h> predates C++11.]) 325 fi 326 AC_CACHE_CHECK([whether stdint.h has UINTMAX_WIDTH etc.], 327 [gl_cv_header_stdint_width], 328 [gl_cv_header_stdint_width=no 329 AC_COMPILE_IFELSE( 330 [AC_LANG_PROGRAM([[ 331 /* Work if build is not clean. */ 332 #define _GL_JUST_INCLUDE_SYSTEM_STDINT_H 1 333 #ifndef __STDC_WANT_IEC_60559_BFP_EXT__ 334 #define __STDC_WANT_IEC_60559_BFP_EXT__ 1 335 #endif 336 #include <stdint.h> 337 ]gl_STDINT_INCLUDES[ 338 int iw = UINTMAX_WIDTH; 339 ]])], 340 [gl_cv_header_stdint_width=yes])]) 341 if test "$gl_cv_header_stdint_width" = yes; then 342 STDINT_H= 343 fi 344 ;; 345 *) 346 dnl Check for <sys/inttypes.h>, and for 347 dnl <sys/bitypes.h> (used in Linux libc4 >= 4.6.7 and libc5). 348 AC_CHECK_HEADERS([sys/inttypes.h sys/bitypes.h]) 349 if test $ac_cv_header_sys_inttypes_h = yes; then 350 HAVE_SYS_INTTYPES_H=1 351 fi 352 if test $ac_cv_header_sys_bitypes_h = yes; then 353 HAVE_SYS_BITYPES_H=1 354 fi 355 gl_STDINT_TYPE_PROPERTIES 356 ;; 357 esac 358 359 dnl The substitute stdint.h needs the substitute limit.h's _GL_INTEGER_WIDTH. 360 gl_REPLACE_LIMITS_H 361 362 AC_SUBST([HAVE_C99_STDINT_H]) 363 AC_SUBST([HAVE_SYS_BITYPES_H]) 364 AC_SUBST([HAVE_SYS_INTTYPES_H]) 365 AC_SUBST([STDINT_H]) 366 AM_CONDITIONAL([GL_GENERATE_STDINT_H], [test -n "$STDINT_H"]) 367]) 368 369dnl gl_STDINT_BITSIZEOF(TYPES, INCLUDES) 370dnl Determine the size of each of the given types in bits. 371AC_DEFUN([gl_STDINT_BITSIZEOF], 372[ 373 dnl Use a shell loop, to avoid bloating configure, and 374 dnl - extra AH_TEMPLATE calls, so that autoheader knows what to put into 375 dnl config.h.in, 376 dnl - extra AC_SUBST calls, so that the right substitutions are made. 377 m4_foreach_w([gltype], [$1], 378 [AH_TEMPLATE([BITSIZEOF_]m4_translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_]), 379 [Define to the number of bits in type ']gltype['.])]) 380 for gltype in $1 ; do 381 AC_CACHE_CHECK([for bit size of $gltype], [gl_cv_bitsizeof_${gltype}], 382 [AC_COMPUTE_INT([result], [sizeof ($gltype) * CHAR_BIT], 383 [$2 384#include <limits.h>], [result=unknown]) 385 eval gl_cv_bitsizeof_${gltype}=\$result 386 ]) 387 eval result=\$gl_cv_bitsizeof_${gltype} 388 if test $result = unknown; then 389 dnl Use a nonempty default, because some compilers, such as IRIX 5 cc, 390 dnl do a syntax check even on unused #if conditions and give an error 391 dnl on valid C code like this: 392 dnl #if 0 393 dnl # if > 32 394 dnl # endif 395 dnl #endif 396 result=0 397 fi 398 GLTYPE=`echo "$gltype" | tr 'abcdefghijklmnopqrstuvwxyz ' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'` 399 AC_DEFINE_UNQUOTED([BITSIZEOF_${GLTYPE}], [$result]) 400 eval BITSIZEOF_${GLTYPE}=\$result 401 done 402 m4_foreach_w([gltype], [$1], 403 [AC_SUBST([BITSIZEOF_]m4_translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_]))]) 404]) 405 406dnl gl_CHECK_TYPES_SIGNED(TYPES, INCLUDES) 407dnl Determine the signedness of each of the given types. 408dnl Define HAVE_SIGNED_TYPE if type is signed. 409AC_DEFUN([gl_CHECK_TYPES_SIGNED], 410[ 411 dnl Use a shell loop, to avoid bloating configure, and 412 dnl - extra AH_TEMPLATE calls, so that autoheader knows what to put into 413 dnl config.h.in, 414 dnl - extra AC_SUBST calls, so that the right substitutions are made. 415 m4_foreach_w([gltype], [$1], 416 [AH_TEMPLATE([HAVE_SIGNED_]m4_translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_]), 417 [Define to 1 if ']gltype[' is a signed integer type.])]) 418 for gltype in $1 ; do 419 AC_CACHE_CHECK([whether $gltype is signed], [gl_cv_type_${gltype}_signed], 420 [AC_COMPILE_IFELSE( 421 [AC_LANG_PROGRAM([$2[ 422 int verify[2 * (($gltype) -1 < ($gltype) 0) - 1];]])], 423 result=yes, result=no) 424 eval gl_cv_type_${gltype}_signed=\$result 425 ]) 426 eval result=\$gl_cv_type_${gltype}_signed 427 GLTYPE=`echo $gltype | tr 'abcdefghijklmnopqrstuvwxyz ' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'` 428 if test "$result" = yes; then 429 AC_DEFINE_UNQUOTED([HAVE_SIGNED_${GLTYPE}], [1]) 430 eval HAVE_SIGNED_${GLTYPE}=1 431 else 432 eval HAVE_SIGNED_${GLTYPE}=0 433 fi 434 done 435 m4_foreach_w([gltype], [$1], 436 [AC_SUBST([HAVE_SIGNED_]m4_translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_]))]) 437]) 438 439dnl gl_INTEGER_TYPE_SUFFIX(TYPES, INCLUDES) 440dnl Determine the suffix to use for integer constants of the given types. 441dnl Define t_SUFFIX for each such type. 442AC_DEFUN([gl_INTEGER_TYPE_SUFFIX], 443[ 444 dnl Use a shell loop, to avoid bloating configure, and 445 dnl - extra AH_TEMPLATE calls, so that autoheader knows what to put into 446 dnl config.h.in, 447 dnl - extra AC_SUBST calls, so that the right substitutions are made. 448 m4_foreach_w([gltype], [$1], 449 [AH_TEMPLATE(m4_translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_])[_SUFFIX], 450 [Define to l, ll, u, ul, ull, etc., as suitable for 451 constants of type ']gltype['.])]) 452 for gltype in $1 ; do 453 AC_CACHE_CHECK([for $gltype integer literal suffix], 454 [gl_cv_type_${gltype}_suffix], 455 [eval gl_cv_type_${gltype}_suffix=no 456 eval result=\$gl_cv_type_${gltype}_signed 457 if test "$result" = yes; then 458 glsufu= 459 else 460 glsufu=u 461 fi 462 for glsuf in "$glsufu" ${glsufu}l ${glsufu}ll ${glsufu}i64; do 463 case $glsuf in 464 '') gltype1='int';; 465 l) gltype1='long int';; 466 ll) gltype1='long long int';; 467 i64) gltype1='__int64';; 468 u) gltype1='unsigned int';; 469 ul) gltype1='unsigned long int';; 470 ull) gltype1='unsigned long long int';; 471 ui64)gltype1='unsigned __int64';; 472 esac 473 AC_COMPILE_IFELSE( 474 [AC_LANG_PROGRAM([$2[ 475 extern $gltype foo; 476 extern $gltype1 foo;]])], 477 [eval gl_cv_type_${gltype}_suffix=\$glsuf]) 478 eval result=\$gl_cv_type_${gltype}_suffix 479 test "$result" != no && break 480 done]) 481 GLTYPE=`echo $gltype | tr 'abcdefghijklmnopqrstuvwxyz ' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'` 482 eval result=\$gl_cv_type_${gltype}_suffix 483 test "$result" = no && result= 484 eval ${GLTYPE}_SUFFIX=\$result 485 AC_DEFINE_UNQUOTED([${GLTYPE}_SUFFIX], [$result]) 486 done 487 m4_foreach_w([gltype], [$1], 488 [AC_SUBST(m4_translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_])[_SUFFIX])]) 489]) 490 491dnl gl_STDINT_INCLUDES 492AC_DEFUN([gl_STDINT_INCLUDES], 493[[ 494 /* BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be 495 included before <wchar.h>. */ 496 #include <stddef.h> 497 #include <signal.h> 498 #if HAVE_WCHAR_H 499 # include <stdio.h> 500 # include <time.h> 501 # include <wchar.h> 502 #endif 503]]) 504 505dnl gl_STDINT_TYPE_PROPERTIES 506dnl Compute HAVE_SIGNED_t, BITSIZEOF_t and t_SUFFIX, for all the types t 507dnl of interest to stdint.in.h. 508AC_DEFUN([gl_STDINT_TYPE_PROPERTIES], 509[ 510 AC_REQUIRE([gl_MULTIARCH]) 511 if test $APPLE_UNIVERSAL_BUILD = 0; then 512 gl_STDINT_BITSIZEOF([ptrdiff_t size_t], 513 [gl_STDINT_INCLUDES]) 514 fi 515 gl_STDINT_BITSIZEOF([sig_atomic_t wchar_t wint_t], 516 [gl_STDINT_INCLUDES]) 517 gl_CHECK_TYPES_SIGNED([sig_atomic_t wchar_t wint_t], 518 [gl_STDINT_INCLUDES]) 519 gl_cv_type_ptrdiff_t_signed=yes 520 gl_cv_type_size_t_signed=no 521 if test $APPLE_UNIVERSAL_BUILD = 0; then 522 gl_INTEGER_TYPE_SUFFIX([ptrdiff_t size_t], 523 [gl_STDINT_INCLUDES]) 524 fi 525 gl_INTEGER_TYPE_SUFFIX([sig_atomic_t wchar_t wint_t], 526 [gl_STDINT_INCLUDES]) 527 528 dnl If wint_t is smaller than 'int', it cannot satisfy the ISO C 99 529 dnl requirement that wint_t is "unchanged by default argument promotions". 530 dnl In this case gnulib's <wchar.h> and <wctype.h> override wint_t. 531 dnl Set the variable BITSIZEOF_WINT_T accordingly. 532 if test $GNULIB_OVERRIDES_WINT_T = 1; then 533 BITSIZEOF_WINT_T=32 534 fi 535]) 536