gnulib/import/m4/stdint.m4

   1 # stdint.m4 serial 58
   2 dnl Copyright (C) 2001-2021 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_PREREQ([2.61])
  11
  12 AC_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   AC_CHECK_HEADERS_ONCE([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   AC_CHECK_HEADERS_ONCE([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 ]
  78 gl_STDINT_INCLUDES
  79 [
  80 #ifdef INT8_MAX
  81 int8_t a1 = INT8_MAX;
  82 int8_t a1min = INT8_MIN;
  83 #endif
  84 #ifdef INT16_MAX
  85 int16_t a2 = INT16_MAX;
  86 int16_t a2min = INT16_MIN;
  87 #endif
  88 #ifdef INT32_MAX
  89 int32_t a3 = INT32_MAX;
  90 int32_t a3min = INT32_MIN;
  91 #endif
  92 #ifdef INT64_MAX
  93 int64_t a4 = INT64_MAX;
  94 int64_t a4min = INT64_MIN;
  95 #endif
  96 #ifdef UINT8_MAX
  97 uint8_t b1 = UINT8_MAX;
  98 #else
  99 typedef int b1[(unsigned char) -1 != 255 ? 1 : -1];
 100 #endif
 101 #ifdef UINT16_MAX
 102 uint16_t b2 = UINT16_MAX;
 103 #endif
 104 #ifdef UINT32_MAX
 105 uint32_t b3 = UINT32_MAX;
 106 #endif
 107 #ifdef UINT64_MAX
 108 uint64_t b4 = UINT64_MAX;
 109 #endif
 110 int_least8_t c1 = INT8_C (0x7f);
 111 int_least8_t c1max = INT_LEAST8_MAX;
 112 int_least8_t c1min = INT_LEAST8_MIN;
 113 int_least16_t c2 = INT16_C (0x7fff);
 114 int_least16_t c2max = INT_LEAST16_MAX;
 115 int_least16_t c2min = INT_LEAST16_MIN;
 116 int_least32_t c3 = INT32_C (0x7fffffff);
 117 int_least32_t c3max = INT_LEAST32_MAX;
 118 int_least32_t c3min = INT_LEAST32_MIN;
 119 int_least64_t c4 = INT64_C (0x7fffffffffffffff);
 120 int_least64_t c4max = INT_LEAST64_MAX;
 121 int_least64_t c4min = INT_LEAST64_MIN;
 122 uint_least8_t d1 = UINT8_C (0xff);
 123 uint_least8_t d1max = UINT_LEAST8_MAX;
 124 uint_least16_t d2 = UINT16_C (0xffff);
 125 uint_least16_t d2max = UINT_LEAST16_MAX;
 126 uint_least32_t d3 = UINT32_C (0xffffffff);
 127 uint_least32_t d3max = UINT_LEAST32_MAX;
 128 uint_least64_t d4 = UINT64_C (0xffffffffffffffff);
 129 uint_least64_t d4max = UINT_LEAST64_MAX;
 130 int_fast8_t e1 = INT_FAST8_MAX;
 131 int_fast8_t e1min = INT_FAST8_MIN;
 132 int_fast16_t e2 = INT_FAST16_MAX;
 133 int_fast16_t e2min = INT_FAST16_MIN;
 134 int_fast32_t e3 = INT_FAST32_MAX;
 135 int_fast32_t e3min = INT_FAST32_MIN;
 136 int_fast64_t e4 = INT_FAST64_MAX;
 137 int_fast64_t e4min = INT_FAST64_MIN;
 138 uint_fast8_t f1 = UINT_FAST8_MAX;
 139 uint_fast16_t f2 = UINT_FAST16_MAX;
 140 uint_fast32_t f3 = UINT_FAST32_MAX;
 141 uint_fast64_t f4 = UINT_FAST64_MAX;
 142 #ifdef INTPTR_MAX
 143 intptr_t g = INTPTR_MAX;
 144 intptr_t gmin = INTPTR_MIN;
 145 #endif
 146 #ifdef UINTPTR_MAX
 147 uintptr_t h = UINTPTR_MAX;
 148 #endif
 149 intmax_t i = INTMAX_MAX;
 150 uintmax_t j = UINTMAX_MAX;
 151
 152 /* Check that SIZE_MAX has the correct type, if possible.  */
 153 #if 201112 <= __STDC_VERSION__
 154 int k = _Generic (SIZE_MAX, size_t: 0);
 155 #elif (2 <= __GNUC__ || 4 <= __clang_major__ || defined __IBM__TYPEOF__ \
 156        || (0x5110 <= __SUNPRO_C && !__STDC__))
 157 extern size_t k;
 158 extern __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)))
 168 struct 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 ]
 233 gl_STDINT_INCLUDES
 234 [
 235 #include <stdio.h>
 236 #include <string.h>
 237 #define MVAL(macro) MVAL1(macro)
 238 #define MVAL1(expression) #expression
 239 static 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       dnl If not, there would be problems when stdint.h is included from C++.
 306       AC_CACHE_CHECK([whether stdint.h works without ISO C predefines],
 307         [gl_cv_header_stdint_without_STDC_macros],
 308         [gl_cv_header_stdint_without_STDC_macros=no
 309          AC_COMPILE_IFELSE([
 310            AC_LANG_PROGRAM([[
 311 #define _GL_JUST_INCLUDE_SYSTEM_STDINT_H 1 /* work if build isn't clean */
 312 #include <stdint.h>
 313 ]
 314 gl_STDINT_INCLUDES
 315 [
 316 intmax_t im = INTMAX_MAX;
 317 int32_t i32 = INT32_C (0x7fffffff);
 318            ]])],
 319            [gl_cv_header_stdint_without_STDC_macros=yes])
 320         ])
 321
 322       if test $gl_cv_header_stdint_without_STDC_macros = no; then
 323         AC_DEFINE([__STDC_CONSTANT_MACROS], [1],
 324           [Define to 1 if the system <stdint.h> predates C++11.])
 325         AC_DEFINE([__STDC_LIMIT_MACROS], [1],
 326           [Define to 1 if the system <stdint.h> predates C++11.])
 327       fi
 328       AC_CACHE_CHECK([whether stdint.h has UINTMAX_WIDTH etc.],
 329         [gl_cv_header_stdint_width],
 330         [gl_cv_header_stdint_width=no
 331          AC_COMPILE_IFELSE(
 332            [AC_LANG_PROGRAM([[
 333               /* Work if build is not clean.  */
 334               #define _GL_JUST_INCLUDE_SYSTEM_STDINT_H 1
 335               #ifndef __STDC_WANT_IEC_60559_BFP_EXT__
 336                #define __STDC_WANT_IEC_60559_BFP_EXT__ 1
 337               #endif
 338               #include <stdint.h>
 339               ]gl_STDINT_INCLUDES[
 340               int iw = UINTMAX_WIDTH;
 341               ]])],
 342            [gl_cv_header_stdint_width=yes])])
 343       if test "$gl_cv_header_stdint_width" = yes; then
 344         STDINT_H=
 345       fi
 346       ;;
 347     *)
 348       dnl Check for <sys/inttypes.h>, and for
 349       dnl <sys/bitypes.h> (used in Linux libc4 >= 4.6.7 and libc5).
 350       AC_CHECK_HEADERS([sys/inttypes.h sys/bitypes.h])
 351       if test $ac_cv_header_sys_inttypes_h = yes; then
 352         HAVE_SYS_INTTYPES_H=1
 353       fi
 354       if test $ac_cv_header_sys_bitypes_h = yes; then
 355         HAVE_SYS_BITYPES_H=1
 356       fi
 357       gl_STDINT_TYPE_PROPERTIES
 358       ;;
 359   esac
 360
 361   dnl The substitute stdint.h needs the substitute limit.h's _GL_INTEGER_WIDTH.
 362   gl_REPLACE_LIMITS_H
 363
 364   AC_SUBST([HAVE_C99_STDINT_H])
 365   AC_SUBST([HAVE_SYS_BITYPES_H])
 366   AC_SUBST([HAVE_SYS_INTTYPES_H])
 367   AC_SUBST([STDINT_H])
 368   AM_CONDITIONAL([GL_GENERATE_STDINT_H], [test -n "$STDINT_H"])
 369 ])
 370
 371 dnl gl_STDINT_BITSIZEOF(TYPES, INCLUDES)
 372 dnl Determine the size of each of the given types in bits.
 373 AC_DEFUN([gl_STDINT_BITSIZEOF],
 374 [
 375   dnl Use a shell loop, to avoid bloating configure, and
 376   dnl - extra AH_TEMPLATE calls, so that autoheader knows what to put into
 377   dnl   config.h.in,
 378   dnl - extra AC_SUBST calls, so that the right substitutions are made.
 379   m4_foreach_w([gltype], [$1],
 380     [AH_TEMPLATE([BITSIZEOF_]m4_translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_]),
 381        [Define to the number of bits in type ']gltype['.])])
 382   for gltype in $1 ; do
 383     AC_CACHE_CHECK([for bit size of $gltype], [gl_cv_bitsizeof_${gltype}],
 384       [AC_COMPUTE_INT([result], [sizeof ($gltype) * CHAR_BIT],
 385          [$2
 386 #include <limits.h>], [result=unknown])
 387        eval gl_cv_bitsizeof_${gltype}=\$result
 388       ])
 389     eval result=\$gl_cv_bitsizeof_${gltype}
 390     if test $result = unknown; then
 391       dnl Use a nonempty default, because some compilers, such as IRIX 5 cc,
 392       dnl do a syntax check even on unused #if conditions and give an error
 393       dnl on valid C code like this:
 394       dnl   #if 0
 395       dnl   # if  > 32
 396       dnl   # endif
 397       dnl   #endif
 398       result=0
 399     fi
 400     GLTYPE=`echo "$gltype" | tr 'abcdefghijklmnopqrstuvwxyz ' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'`
 401     AC_DEFINE_UNQUOTED([BITSIZEOF_${GLTYPE}], [$result])
 402     eval BITSIZEOF_${GLTYPE}=\$result
 403   done
 404   m4_foreach_w([gltype], [$1],
 405     [AC_SUBST([BITSIZEOF_]m4_translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_]))])
 406 ])
 407
 408 dnl gl_CHECK_TYPES_SIGNED(TYPES, INCLUDES)
 409 dnl Determine the signedness of each of the given types.
 410 dnl Define HAVE_SIGNED_TYPE if type is signed.
 411 AC_DEFUN([gl_CHECK_TYPES_SIGNED],
 412 [
 413   dnl Use a shell loop, to avoid bloating configure, and
 414   dnl - extra AH_TEMPLATE calls, so that autoheader knows what to put into
 415   dnl   config.h.in,
 416   dnl - extra AC_SUBST calls, so that the right substitutions are made.
 417   m4_foreach_w([gltype], [$1],
 418     [AH_TEMPLATE([HAVE_SIGNED_]m4_translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_]),
 419        [Define to 1 if ']gltype[' is a signed integer type.])])
 420   for gltype in $1 ; do
 421     AC_CACHE_CHECK([whether $gltype is signed], [gl_cv_type_${gltype}_signed],
 422       [AC_COMPILE_IFELSE(
 423          [AC_LANG_PROGRAM([$2[
 424             int verify[2 * (($gltype) -1 < ($gltype) 0) - 1];]])],
 425          result=yes, result=no)
 426        eval gl_cv_type_${gltype}_signed=\$result
 427       ])
 428     eval result=\$gl_cv_type_${gltype}_signed
 429     GLTYPE=`echo $gltype | tr 'abcdefghijklmnopqrstuvwxyz ' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'`
 430     if test "$result" = yes; then
 431       AC_DEFINE_UNQUOTED([HAVE_SIGNED_${GLTYPE}], [1])
 432       eval HAVE_SIGNED_${GLTYPE}=1
 433     else
 434       eval HAVE_SIGNED_${GLTYPE}=0
 435     fi
 436   done
 437   m4_foreach_w([gltype], [$1],
 438     [AC_SUBST([HAVE_SIGNED_]m4_translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_]))])
 439 ])
 440
 441 dnl gl_INTEGER_TYPE_SUFFIX(TYPES, INCLUDES)
 442 dnl Determine the suffix to use for integer constants of the given types.
 443 dnl Define t_SUFFIX for each such type.
 444 AC_DEFUN([gl_INTEGER_TYPE_SUFFIX],
 445 [
 446   dnl Use a shell loop, to avoid bloating configure, and
 447   dnl - extra AH_TEMPLATE calls, so that autoheader knows what to put into
 448   dnl   config.h.in,
 449   dnl - extra AC_SUBST calls, so that the right substitutions are made.
 450   m4_foreach_w([gltype], [$1],
 451     [AH_TEMPLATE(m4_translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_])[_SUFFIX],
 452        [Define to l, ll, u, ul, ull, etc., as suitable for
 453         constants of type ']gltype['.])])
 454   for gltype in $1 ; do
 455     AC_CACHE_CHECK([for $gltype integer literal suffix],
 456       [gl_cv_type_${gltype}_suffix],
 457       [eval gl_cv_type_${gltype}_suffix=no
 458        eval result=\$gl_cv_type_${gltype}_signed
 459        if test "$result" = yes; then
 460          glsufu=
 461        else
 462          glsufu=u
 463        fi
 464        for glsuf in "$glsufu" ${glsufu}l ${glsufu}ll ${glsufu}i64; do
 465          case $glsuf in
 466            '')  gltype1='int';;
 467            l)   gltype1='long int';;
 468            ll)  gltype1='long long int';;
 469            i64) gltype1='__int64';;
 470            u)   gltype1='unsigned int';;
 471            ul)  gltype1='unsigned long int';;
 472            ull) gltype1='unsigned long long int';;
 473            ui64)gltype1='unsigned __int64';;
 474          esac
 475          AC_COMPILE_IFELSE(
 476            [AC_LANG_PROGRAM([$2[
 477               extern $gltype foo;
 478               extern $gltype1 foo;]])],
 479            [eval gl_cv_type_${gltype}_suffix=\$glsuf])
 480          eval result=\$gl_cv_type_${gltype}_suffix
 481          test "$result" != no && break
 482        done])
 483     GLTYPE=`echo $gltype | tr 'abcdefghijklmnopqrstuvwxyz ' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'`
 484     eval result=\$gl_cv_type_${gltype}_suffix
 485     test "$result" = no && result=
 486     eval ${GLTYPE}_SUFFIX=\$result
 487     AC_DEFINE_UNQUOTED([${GLTYPE}_SUFFIX], [$result])
 488   done
 489   m4_foreach_w([gltype], [$1],
 490     [AC_SUBST(m4_translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_])[_SUFFIX])])
 491 ])
 492
 493 dnl gl_STDINT_INCLUDES
 494 AC_DEFUN([gl_STDINT_INCLUDES],
 495 [[
 496   #include <stddef.h>
 497   #include <signal.h>
 498   #if HAVE_WCHAR_H
 499   # include <wchar.h>
 500   #endif
 501 ]])
 502
 503 dnl gl_STDINT_TYPE_PROPERTIES
 504 dnl Compute HAVE_SIGNED_t, BITSIZEOF_t and t_SUFFIX, for all the types t
 505 dnl of interest to stdint.in.h.
 506 AC_DEFUN([gl_STDINT_TYPE_PROPERTIES],
 507 [
 508   AC_REQUIRE([gl_MULTIARCH])
 509   if test $APPLE_UNIVERSAL_BUILD = 0; then
 510     gl_STDINT_BITSIZEOF([ptrdiff_t size_t],
 511       [gl_STDINT_INCLUDES])
 512   fi
 513   gl_STDINT_BITSIZEOF([sig_atomic_t wchar_t wint_t],
 514     [gl_STDINT_INCLUDES])
 515   gl_CHECK_TYPES_SIGNED([sig_atomic_t wchar_t wint_t],
 516     [gl_STDINT_INCLUDES])
 517   gl_cv_type_ptrdiff_t_signed=yes
 518   gl_cv_type_size_t_signed=no
 519   if test $APPLE_UNIVERSAL_BUILD = 0; then
 520     gl_INTEGER_TYPE_SUFFIX([ptrdiff_t size_t],
 521       [gl_STDINT_INCLUDES])
 522   fi
 523   gl_INTEGER_TYPE_SUFFIX([sig_atomic_t wchar_t wint_t],
 524     [gl_STDINT_INCLUDES])
 525
 526   dnl If wint_t is smaller than 'int', it cannot satisfy the ISO C 99
 527   dnl requirement that wint_t is "unchanged by default argument promotions".
 528   dnl In this case gnulib's <wchar.h> and <wctype.h> override wint_t.
 529   dnl Set the variable BITSIZEOF_WINT_T accordingly.
 530   if test $GNULIB_OVERRIDES_WINT_T = 1; then
 531     BITSIZEOF_WINT_T=32
 532   fi
 533 ])