1# stdint.m4 serial 51 2dnl Copyright (C) 2001-2018 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_DEFUN_ONCE([gl_STDINT_H], 11[ 12 AC_PREREQ([2.59])dnl 13 AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles 14 15 AC_REQUIRE([gl_LIMITS_H]) 16 AC_REQUIRE([gt_TYPE_WINT_T]) 17 18 dnl Check for long long int and unsigned long long int. 19 AC_REQUIRE([AC_TYPE_LONG_LONG_INT]) 20 if test $ac_cv_type_long_long_int = yes; then 21 HAVE_LONG_LONG_INT=1 22 else 23 HAVE_LONG_LONG_INT=0 24 fi 25 AC_SUBST([HAVE_LONG_LONG_INT]) 26 AC_REQUIRE([AC_TYPE_UNSIGNED_LONG_LONG_INT]) 27 if test $ac_cv_type_unsigned_long_long_int = yes; then 28 HAVE_UNSIGNED_LONG_LONG_INT=1 29 else 30 HAVE_UNSIGNED_LONG_LONG_INT=0 31 fi 32 AC_SUBST([HAVE_UNSIGNED_LONG_LONG_INT]) 33 34 dnl Check for <wchar.h>, in the same way as gl_WCHAR_H does. 35 AC_CHECK_HEADERS_ONCE([wchar.h]) 36 if test $ac_cv_header_wchar_h = yes; then 37 HAVE_WCHAR_H=1 38 else 39 HAVE_WCHAR_H=0 40 fi 41 AC_SUBST([HAVE_WCHAR_H]) 42 43 dnl Check for <inttypes.h>. 44 dnl AC_INCLUDES_DEFAULT defines $ac_cv_header_inttypes_h. 45 if test $ac_cv_header_inttypes_h = yes; then 46 HAVE_INTTYPES_H=1 47 else 48 HAVE_INTTYPES_H=0 49 fi 50 AC_SUBST([HAVE_INTTYPES_H]) 51 52 dnl Check for <sys/types.h>. 53 dnl AC_INCLUDES_DEFAULT defines $ac_cv_header_sys_types_h. 54 if test $ac_cv_header_sys_types_h = yes; then 55 HAVE_SYS_TYPES_H=1 56 else 57 HAVE_SYS_TYPES_H=0 58 fi 59 AC_SUBST([HAVE_SYS_TYPES_H]) 60 61 gl_CHECK_NEXT_HEADERS([stdint.h]) 62 if test $ac_cv_header_stdint_h = yes; then 63 HAVE_STDINT_H=1 64 else 65 HAVE_STDINT_H=0 66 fi 67 AC_SUBST([HAVE_STDINT_H]) 68 69 dnl Now see whether we need a substitute <stdint.h>. 70 if test $ac_cv_header_stdint_h = yes; then 71 AC_CACHE_CHECK([whether stdint.h conforms to C99], 72 [gl_cv_header_working_stdint_h], 73 [gl_cv_header_working_stdint_h=no 74 AC_COMPILE_IFELSE([ 75 AC_LANG_PROGRAM([[ 76#define _GL_JUST_INCLUDE_SYSTEM_STDINT_H 1 /* work if build isn't clean */ 77#define __STDC_CONSTANT_MACROS 1 78#define __STDC_LIMIT_MACROS 1 79#include <stdint.h> 80/* Dragonfly defines WCHAR_MIN, WCHAR_MAX only in <wchar.h>. */ 81#if !(defined WCHAR_MIN && defined WCHAR_MAX) 82#error "WCHAR_MIN, WCHAR_MAX not defined in <stdint.h>" 83#endif 84] 85gl_STDINT_INCLUDES 86[ 87#ifdef INT8_MAX 88int8_t a1 = INT8_MAX; 89int8_t a1min = INT8_MIN; 90#endif 91#ifdef INT16_MAX 92int16_t a2 = INT16_MAX; 93int16_t a2min = INT16_MIN; 94#endif 95#ifdef INT32_MAX 96int32_t a3 = INT32_MAX; 97int32_t a3min = INT32_MIN; 98#endif 99#ifdef INT64_MAX 100int64_t a4 = INT64_MAX; 101int64_t a4min = INT64_MIN; 102#endif 103#ifdef UINT8_MAX 104uint8_t b1 = UINT8_MAX; 105#else 106typedef int b1[(unsigned char) -1 != 255 ? 1 : -1]; 107#endif 108#ifdef UINT16_MAX 109uint16_t b2 = UINT16_MAX; 110#endif 111#ifdef UINT32_MAX 112uint32_t b3 = UINT32_MAX; 113#endif 114#ifdef UINT64_MAX 115uint64_t b4 = UINT64_MAX; 116#endif 117int_least8_t c1 = INT8_C (0x7f); 118int_least8_t c1max = INT_LEAST8_MAX; 119int_least8_t c1min = INT_LEAST8_MIN; 120int_least16_t c2 = INT16_C (0x7fff); 121int_least16_t c2max = INT_LEAST16_MAX; 122int_least16_t c2min = INT_LEAST16_MIN; 123int_least32_t c3 = INT32_C (0x7fffffff); 124int_least32_t c3max = INT_LEAST32_MAX; 125int_least32_t c3min = INT_LEAST32_MIN; 126int_least64_t c4 = INT64_C (0x7fffffffffffffff); 127int_least64_t c4max = INT_LEAST64_MAX; 128int_least64_t c4min = INT_LEAST64_MIN; 129uint_least8_t d1 = UINT8_C (0xff); 130uint_least8_t d1max = UINT_LEAST8_MAX; 131uint_least16_t d2 = UINT16_C (0xffff); 132uint_least16_t d2max = UINT_LEAST16_MAX; 133uint_least32_t d3 = UINT32_C (0xffffffff); 134uint_least32_t d3max = UINT_LEAST32_MAX; 135uint_least64_t d4 = UINT64_C (0xffffffffffffffff); 136uint_least64_t d4max = UINT_LEAST64_MAX; 137int_fast8_t e1 = INT_FAST8_MAX; 138int_fast8_t e1min = INT_FAST8_MIN; 139int_fast16_t e2 = INT_FAST16_MAX; 140int_fast16_t e2min = INT_FAST16_MIN; 141int_fast32_t e3 = INT_FAST32_MAX; 142int_fast32_t e3min = INT_FAST32_MIN; 143int_fast64_t e4 = INT_FAST64_MAX; 144int_fast64_t e4min = INT_FAST64_MIN; 145uint_fast8_t f1 = UINT_FAST8_MAX; 146uint_fast16_t f2 = UINT_FAST16_MAX; 147uint_fast32_t f3 = UINT_FAST32_MAX; 148uint_fast64_t f4 = UINT_FAST64_MAX; 149#ifdef INTPTR_MAX 150intptr_t g = INTPTR_MAX; 151intptr_t gmin = INTPTR_MIN; 152#endif 153#ifdef UINTPTR_MAX 154uintptr_t h = UINTPTR_MAX; 155#endif 156intmax_t i = INTMAX_MAX; 157uintmax_t j = UINTMAX_MAX; 158 159/* Check that SIZE_MAX has the correct type, if possible. */ 160#if 201112 <= __STDC_VERSION__ 161int k = _Generic (SIZE_MAX, size_t: 0); 162#elif (2 <= __GNUC__ || defined __IBM__TYPEOF__ \ 163 || (0x5110 <= __SUNPRO_C && !__STDC__)) 164extern size_t k; 165extern __typeof__ (SIZE_MAX) k; 166#endif 167 168#include <limits.h> /* for CHAR_BIT */ 169#define TYPE_MINIMUM(t) \ 170 ((t) ((t) 0 < (t) -1 ? (t) 0 : ~ TYPE_MAXIMUM (t))) 171#define TYPE_MAXIMUM(t) \ 172 ((t) ((t) 0 < (t) -1 \ 173 ? (t) -1 \ 174 : ((((t) 1 << (sizeof (t) * CHAR_BIT - 2)) - 1) * 2 + 1))) 175struct s { 176 int check_PTRDIFF: 177 PTRDIFF_MIN == TYPE_MINIMUM (ptrdiff_t) 178 && PTRDIFF_MAX == TYPE_MAXIMUM (ptrdiff_t) 179 ? 1 : -1; 180 /* Detect bug in FreeBSD 6.0 / ia64. */ 181 int check_SIG_ATOMIC: 182 SIG_ATOMIC_MIN == TYPE_MINIMUM (sig_atomic_t) 183 && SIG_ATOMIC_MAX == TYPE_MAXIMUM (sig_atomic_t) 184 ? 1 : -1; 185 int check_SIZE: SIZE_MAX == TYPE_MAXIMUM (size_t) ? 1 : -1; 186 int check_WCHAR: 187 WCHAR_MIN == TYPE_MINIMUM (wchar_t) 188 && WCHAR_MAX == TYPE_MAXIMUM (wchar_t) 189 ? 1 : -1; 190 /* Detect bug in mingw. */ 191 int check_WINT: 192 WINT_MIN == TYPE_MINIMUM (wint_t) 193 && WINT_MAX == TYPE_MAXIMUM (wint_t) 194 ? 1 : -1; 195 196 /* Detect bugs in glibc 2.4 and Solaris 10 stdint.h, among others. */ 197 int check_UINT8_C: 198 (-1 < UINT8_C (0)) == (-1 < (uint_least8_t) 0) ? 1 : -1; 199 int check_UINT16_C: 200 (-1 < UINT16_C (0)) == (-1 < (uint_least16_t) 0) ? 1 : -1; 201 202 /* Detect bugs in OpenBSD 3.9 stdint.h. */ 203#ifdef UINT8_MAX 204 int check_uint8: (uint8_t) -1 == UINT8_MAX ? 1 : -1; 205#endif 206#ifdef UINT16_MAX 207 int check_uint16: (uint16_t) -1 == UINT16_MAX ? 1 : -1; 208#endif 209#ifdef UINT32_MAX 210 int check_uint32: (uint32_t) -1 == UINT32_MAX ? 1 : -1; 211#endif 212#ifdef UINT64_MAX 213 int check_uint64: (uint64_t) -1 == UINT64_MAX ? 1 : -1; 214#endif 215 int check_uint_least8: (uint_least8_t) -1 == UINT_LEAST8_MAX ? 1 : -1; 216 int check_uint_least16: (uint_least16_t) -1 == UINT_LEAST16_MAX ? 1 : -1; 217 int check_uint_least32: (uint_least32_t) -1 == UINT_LEAST32_MAX ? 1 : -1; 218 int check_uint_least64: (uint_least64_t) -1 == UINT_LEAST64_MAX ? 1 : -1; 219 int check_uint_fast8: (uint_fast8_t) -1 == UINT_FAST8_MAX ? 1 : -1; 220 int check_uint_fast16: (uint_fast16_t) -1 == UINT_FAST16_MAX ? 1 : -1; 221 int check_uint_fast32: (uint_fast32_t) -1 == UINT_FAST32_MAX ? 1 : -1; 222 int check_uint_fast64: (uint_fast64_t) -1 == UINT_FAST64_MAX ? 1 : -1; 223 int check_uintptr: (uintptr_t) -1 == UINTPTR_MAX ? 1 : -1; 224 int check_uintmax: (uintmax_t) -1 == UINTMAX_MAX ? 1 : -1; 225 int check_size: (size_t) -1 == SIZE_MAX ? 1 : -1; 226}; 227 ]])], 228 [dnl Determine whether the various *_MIN, *_MAX macros are usable 229 dnl in preprocessor expression. We could do it by compiling a test 230 dnl program for each of these macros. It is faster to run a program 231 dnl that inspects the macro expansion. 232 dnl This detects a bug on HP-UX 11.23/ia64. 233 AC_RUN_IFELSE([ 234 AC_LANG_PROGRAM([[ 235#define _GL_JUST_INCLUDE_SYSTEM_STDINT_H 1 /* work if build isn't clean */ 236#define __STDC_CONSTANT_MACROS 1 237#define __STDC_LIMIT_MACROS 1 238#include <stdint.h> 239] 240gl_STDINT_INCLUDES 241[ 242#include <stdio.h> 243#include <string.h> 244#define MVAL(macro) MVAL1(macro) 245#define MVAL1(expression) #expression 246static const char *macro_values[] = 247 { 248#ifdef INT8_MAX 249 MVAL (INT8_MAX), 250#endif 251#ifdef INT16_MAX 252 MVAL (INT16_MAX), 253#endif 254#ifdef INT32_MAX 255 MVAL (INT32_MAX), 256#endif 257#ifdef INT64_MAX 258 MVAL (INT64_MAX), 259#endif 260#ifdef UINT8_MAX 261 MVAL (UINT8_MAX), 262#endif 263#ifdef UINT16_MAX 264 MVAL (UINT16_MAX), 265#endif 266#ifdef UINT32_MAX 267 MVAL (UINT32_MAX), 268#endif 269#ifdef UINT64_MAX 270 MVAL (UINT64_MAX), 271#endif 272 NULL 273 }; 274]], [[ 275 const char **mv; 276 for (mv = macro_values; *mv != NULL; mv++) 277 { 278 const char *value = *mv; 279 /* Test whether it looks like a cast expression. */ 280 if (strncmp (value, "((unsigned int)"/*)*/, 15) == 0 281 || strncmp (value, "((unsigned short)"/*)*/, 17) == 0 282 || strncmp (value, "((unsigned char)"/*)*/, 16) == 0 283 || strncmp (value, "((int)"/*)*/, 6) == 0 284 || strncmp (value, "((signed short)"/*)*/, 15) == 0 285 || strncmp (value, "((signed char)"/*)*/, 14) == 0) 286 return mv - macro_values + 1; 287 } 288 return 0; 289]])], 290 [gl_cv_header_working_stdint_h=yes], 291 [], 292 [case "$host_os" in 293 # Guess yes on native Windows. 294 mingw*) gl_cv_header_working_stdint_h="guessing yes" ;; 295 # In general, assume it works. 296 *) gl_cv_header_working_stdint_h="guessing yes" ;; 297 esac 298 ]) 299 ]) 300 ]) 301 fi 302 303 HAVE_C99_STDINT_H=0 304 HAVE_SYS_BITYPES_H=0 305 HAVE_SYS_INTTYPES_H=0 306 STDINT_H=stdint.h 307 case "$gl_cv_header_working_stdint_h" in 308 *yes) 309 HAVE_C99_STDINT_H=1 310 dnl Now see whether the system <stdint.h> works without 311 dnl __STDC_CONSTANT_MACROS/__STDC_LIMIT_MACROS defined. 312 AC_CACHE_CHECK([whether stdint.h predates C++11], 313 [gl_cv_header_stdint_predates_cxx11_h], 314 [gl_cv_header_stdint_predates_cxx11_h=yes 315 AC_COMPILE_IFELSE([ 316 AC_LANG_PROGRAM([[ 317#define _GL_JUST_INCLUDE_SYSTEM_STDINT_H 1 /* work if build isn't clean */ 318#include <stdint.h> 319] 320gl_STDINT_INCLUDES 321[ 322intmax_t im = INTMAX_MAX; 323int32_t i32 = INT32_C (0x7fffffff); 324 ]])], 325 [gl_cv_header_stdint_predates_cxx11_h=no])]) 326 327 if test "$gl_cv_header_stdint_predates_cxx11_h" = yes; then 328 AC_DEFINE([__STDC_CONSTANT_MACROS], [1], 329 [Define to 1 if the system <stdint.h> predates C++11.]) 330 AC_DEFINE([__STDC_LIMIT_MACROS], [1], 331 [Define to 1 if the system <stdint.h> predates C++11.]) 332 fi 333 AC_CACHE_CHECK([whether stdint.h has UINTMAX_WIDTH etc.], 334 [gl_cv_header_stdint_width], 335 [gl_cv_header_stdint_width=no 336 AC_COMPILE_IFELSE( 337 [AC_LANG_PROGRAM([[ 338 /* Work if build is not clean. */ 339 #define _GL_JUST_INCLUDE_SYSTEM_STDINT_H 1 340 #ifndef __STDC_WANT_IEC_60559_BFP_EXT__ 341 #define __STDC_WANT_IEC_60559_BFP_EXT__ 1 342 #endif 343 #include <stdint.h> 344 ]gl_STDINT_INCLUDES[ 345 int iw = UINTMAX_WIDTH; 346 ]])], 347 [gl_cv_header_stdint_width=yes])]) 348 if test "$gl_cv_header_stdint_width" = yes; then 349 STDINT_H= 350 fi 351 ;; 352 *) 353 dnl Check for <sys/inttypes.h>, and for 354 dnl <sys/bitypes.h> (used in Linux libc4 >= 4.6.7 and libc5). 355 AC_CHECK_HEADERS([sys/inttypes.h sys/bitypes.h]) 356 if test $ac_cv_header_sys_inttypes_h = yes; then 357 HAVE_SYS_INTTYPES_H=1 358 fi 359 if test $ac_cv_header_sys_bitypes_h = yes; then 360 HAVE_SYS_BITYPES_H=1 361 fi 362 gl_STDINT_TYPE_PROPERTIES 363 ;; 364 esac 365 366 dnl The substitute stdint.h needs the substitute limit.h's _GL_INTEGER_WIDTH. 367 LIMITS_H=limits.h 368 AM_CONDITIONAL([GL_GENERATE_LIMITS_H], [test -n "$LIMITS_H"]) 369 370 AC_SUBST([HAVE_C99_STDINT_H]) 371 AC_SUBST([HAVE_SYS_BITYPES_H]) 372 AC_SUBST([HAVE_SYS_INTTYPES_H]) 373 AC_SUBST([STDINT_H]) 374 AM_CONDITIONAL([GL_GENERATE_STDINT_H], [test -n "$STDINT_H"]) 375]) 376 377dnl gl_STDINT_BITSIZEOF(TYPES, INCLUDES) 378dnl Determine the size of each of the given types in bits. 379AC_DEFUN([gl_STDINT_BITSIZEOF], 380[ 381 dnl Use a shell loop, to avoid bloating configure, and 382 dnl - extra AH_TEMPLATE calls, so that autoheader knows what to put into 383 dnl config.h.in, 384 dnl - extra AC_SUBST calls, so that the right substitutions are made. 385 m4_foreach_w([gltype], [$1], 386 [AH_TEMPLATE([BITSIZEOF_]m4_translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_]), 387 [Define to the number of bits in type ']gltype['.])]) 388 for gltype in $1 ; do 389 AC_CACHE_CHECK([for bit size of $gltype], [gl_cv_bitsizeof_${gltype}], 390 [AC_COMPUTE_INT([result], [sizeof ($gltype) * CHAR_BIT], 391 [$2 392#include <limits.h>], [result=unknown]) 393 eval gl_cv_bitsizeof_${gltype}=\$result 394 ]) 395 eval result=\$gl_cv_bitsizeof_${gltype} 396 if test $result = unknown; then 397 dnl Use a nonempty default, because some compilers, such as IRIX 5 cc, 398 dnl do a syntax check even on unused #if conditions and give an error 399 dnl on valid C code like this: 400 dnl #if 0 401 dnl # if > 32 402 dnl # endif 403 dnl #endif 404 result=0 405 fi 406 GLTYPE=`echo "$gltype" | tr 'abcdefghijklmnopqrstuvwxyz ' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'` 407 AC_DEFINE_UNQUOTED([BITSIZEOF_${GLTYPE}], [$result]) 408 eval BITSIZEOF_${GLTYPE}=\$result 409 done 410 m4_foreach_w([gltype], [$1], 411 [AC_SUBST([BITSIZEOF_]m4_translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_]))]) 412]) 413 414dnl gl_CHECK_TYPES_SIGNED(TYPES, INCLUDES) 415dnl Determine the signedness of each of the given types. 416dnl Define HAVE_SIGNED_TYPE if type is signed. 417AC_DEFUN([gl_CHECK_TYPES_SIGNED], 418[ 419 dnl Use a shell loop, to avoid bloating configure, and 420 dnl - extra AH_TEMPLATE calls, so that autoheader knows what to put into 421 dnl config.h.in, 422 dnl - extra AC_SUBST calls, so that the right substitutions are made. 423 m4_foreach_w([gltype], [$1], 424 [AH_TEMPLATE([HAVE_SIGNED_]m4_translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_]), 425 [Define to 1 if ']gltype[' is a signed integer type.])]) 426 for gltype in $1 ; do 427 AC_CACHE_CHECK([whether $gltype is signed], [gl_cv_type_${gltype}_signed], 428 [AC_COMPILE_IFELSE( 429 [AC_LANG_PROGRAM([$2[ 430 int verify[2 * (($gltype) -1 < ($gltype) 0) - 1];]])], 431 result=yes, result=no) 432 eval gl_cv_type_${gltype}_signed=\$result 433 ]) 434 eval result=\$gl_cv_type_${gltype}_signed 435 GLTYPE=`echo $gltype | tr 'abcdefghijklmnopqrstuvwxyz ' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'` 436 if test "$result" = yes; then 437 AC_DEFINE_UNQUOTED([HAVE_SIGNED_${GLTYPE}], [1]) 438 eval HAVE_SIGNED_${GLTYPE}=1 439 else 440 eval HAVE_SIGNED_${GLTYPE}=0 441 fi 442 done 443 m4_foreach_w([gltype], [$1], 444 [AC_SUBST([HAVE_SIGNED_]m4_translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_]))]) 445]) 446 447dnl gl_INTEGER_TYPE_SUFFIX(TYPES, INCLUDES) 448dnl Determine the suffix to use for integer constants of the given types. 449dnl Define t_SUFFIX for each such type. 450AC_DEFUN([gl_INTEGER_TYPE_SUFFIX], 451[ 452 dnl Use a shell loop, to avoid bloating configure, and 453 dnl - extra AH_TEMPLATE calls, so that autoheader knows what to put into 454 dnl config.h.in, 455 dnl - extra AC_SUBST calls, so that the right substitutions are made. 456 m4_foreach_w([gltype], [$1], 457 [AH_TEMPLATE(m4_translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_])[_SUFFIX], 458 [Define to l, ll, u, ul, ull, etc., as suitable for 459 constants of type ']gltype['.])]) 460 for gltype in $1 ; do 461 AC_CACHE_CHECK([for $gltype integer literal suffix], 462 [gl_cv_type_${gltype}_suffix], 463 [eval gl_cv_type_${gltype}_suffix=no 464 eval result=\$gl_cv_type_${gltype}_signed 465 if test "$result" = yes; then 466 glsufu= 467 else 468 glsufu=u 469 fi 470 for glsuf in "$glsufu" ${glsufu}l ${glsufu}ll ${glsufu}i64; do 471 case $glsuf in 472 '') gltype1='int';; 473 l) gltype1='long int';; 474 ll) gltype1='long long int';; 475 i64) gltype1='__int64';; 476 u) gltype1='unsigned int';; 477 ul) gltype1='unsigned long int';; 478 ull) gltype1='unsigned long long int';; 479 ui64)gltype1='unsigned __int64';; 480 esac 481 AC_COMPILE_IFELSE( 482 [AC_LANG_PROGRAM([$2[ 483 extern $gltype foo; 484 extern $gltype1 foo;]])], 485 [eval gl_cv_type_${gltype}_suffix=\$glsuf]) 486 eval result=\$gl_cv_type_${gltype}_suffix 487 test "$result" != no && break 488 done]) 489 GLTYPE=`echo $gltype | tr 'abcdefghijklmnopqrstuvwxyz ' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'` 490 eval result=\$gl_cv_type_${gltype}_suffix 491 test "$result" = no && result= 492 eval ${GLTYPE}_SUFFIX=\$result 493 AC_DEFINE_UNQUOTED([${GLTYPE}_SUFFIX], [$result]) 494 done 495 m4_foreach_w([gltype], [$1], 496 [AC_SUBST(m4_translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_])[_SUFFIX])]) 497]) 498 499dnl gl_STDINT_INCLUDES 500AC_DEFUN([gl_STDINT_INCLUDES], 501[[ 502 /* BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be 503 included before <wchar.h>. */ 504 #include <stddef.h> 505 #include <signal.h> 506 #if HAVE_WCHAR_H 507 # include <stdio.h> 508 # include <time.h> 509 # include <wchar.h> 510 #endif 511]]) 512 513dnl gl_STDINT_TYPE_PROPERTIES 514dnl Compute HAVE_SIGNED_t, BITSIZEOF_t and t_SUFFIX, for all the types t 515dnl of interest to stdint.in.h. 516AC_DEFUN([gl_STDINT_TYPE_PROPERTIES], 517[ 518 AC_REQUIRE([gl_MULTIARCH]) 519 if test $APPLE_UNIVERSAL_BUILD = 0; then 520 gl_STDINT_BITSIZEOF([ptrdiff_t size_t], 521 [gl_STDINT_INCLUDES]) 522 fi 523 gl_STDINT_BITSIZEOF([sig_atomic_t wchar_t wint_t], 524 [gl_STDINT_INCLUDES]) 525 gl_CHECK_TYPES_SIGNED([sig_atomic_t wchar_t wint_t], 526 [gl_STDINT_INCLUDES]) 527 gl_cv_type_ptrdiff_t_signed=yes 528 gl_cv_type_size_t_signed=no 529 if test $APPLE_UNIVERSAL_BUILD = 0; then 530 gl_INTEGER_TYPE_SUFFIX([ptrdiff_t size_t], 531 [gl_STDINT_INCLUDES]) 532 fi 533 gl_INTEGER_TYPE_SUFFIX([sig_atomic_t wchar_t wint_t], 534 [gl_STDINT_INCLUDES]) 535 536 dnl If wint_t is smaller than 'int', it cannot satisfy the ISO C 99 537 dnl requirement that wint_t is "unchanged by default argument promotions". 538 dnl In this case gnulib's <wchar.h> and <wctype.h> override wint_t. 539 dnl Set the variable BITSIZEOF_WINT_T accordingly. 540 if test $GNULIB_OVERRIDES_WINT_T = 1; then 541 BITSIZEOF_WINT_T=32 542 fi 543]) 544 545dnl Autoconf >= 2.61 has AC_COMPUTE_INT built-in. 546dnl Remove this when we can assume autoconf >= 2.61. 547m4_ifdef([AC_COMPUTE_INT], [], [ 548 AC_DEFUN([AC_COMPUTE_INT], [_AC_COMPUTE_INT([$2],[$1],[$3],[$4])]) 549]) 550