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480 lines
16 KiB
480 lines
16 KiB
# stdint.m4 serial 41 |
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dnl Copyright (C) 2001-2011 Free Software Foundation, Inc. |
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dnl This file is free software; the Free Software Foundation |
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dnl gives unlimited permission to copy and/or distribute it, |
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dnl with or without modifications, as long as this notice is preserved. |
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|
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dnl From Paul Eggert and Bruno Haible. |
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dnl Test whether <stdint.h> is supported or must be substituted. |
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|
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AC_DEFUN_ONCE([gl_STDINT_H], |
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[ |
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AC_PREREQ([2.59])dnl |
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|
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dnl Check for long long int and unsigned long long int. |
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AC_REQUIRE([AC_TYPE_LONG_LONG_INT]) |
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if test $ac_cv_type_long_long_int = yes; then |
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HAVE_LONG_LONG_INT=1 |
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else |
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HAVE_LONG_LONG_INT=0 |
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fi |
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AC_SUBST([HAVE_LONG_LONG_INT]) |
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AC_REQUIRE([AC_TYPE_UNSIGNED_LONG_LONG_INT]) |
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if test $ac_cv_type_unsigned_long_long_int = yes; then |
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HAVE_UNSIGNED_LONG_LONG_INT=1 |
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else |
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HAVE_UNSIGNED_LONG_LONG_INT=0 |
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fi |
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AC_SUBST([HAVE_UNSIGNED_LONG_LONG_INT]) |
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|
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dnl Check for <wchar.h>, in the same way as gl_WCHAR_H does. |
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AC_CHECK_HEADERS_ONCE([wchar.h]) |
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if test $ac_cv_header_wchar_h = yes; then |
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HAVE_WCHAR_H=1 |
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else |
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HAVE_WCHAR_H=0 |
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fi |
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AC_SUBST([HAVE_WCHAR_H]) |
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|
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dnl Check for <inttypes.h>. |
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dnl AC_INCLUDES_DEFAULT defines $ac_cv_header_inttypes_h. |
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if test $ac_cv_header_inttypes_h = yes; then |
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HAVE_INTTYPES_H=1 |
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else |
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HAVE_INTTYPES_H=0 |
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fi |
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AC_SUBST([HAVE_INTTYPES_H]) |
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|
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dnl Check for <sys/types.h>. |
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dnl AC_INCLUDES_DEFAULT defines $ac_cv_header_sys_types_h. |
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if test $ac_cv_header_sys_types_h = yes; then |
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HAVE_SYS_TYPES_H=1 |
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else |
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HAVE_SYS_TYPES_H=0 |
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fi |
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AC_SUBST([HAVE_SYS_TYPES_H]) |
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|
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gl_CHECK_NEXT_HEADERS([stdint.h]) |
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if test $ac_cv_header_stdint_h = yes; then |
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HAVE_STDINT_H=1 |
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else |
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HAVE_STDINT_H=0 |
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fi |
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AC_SUBST([HAVE_STDINT_H]) |
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|
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dnl Now see whether we need a substitute <stdint.h>. |
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if test $ac_cv_header_stdint_h = yes; then |
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AC_CACHE_CHECK([whether stdint.h conforms to C99], |
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[gl_cv_header_working_stdint_h], |
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[gl_cv_header_working_stdint_h=no |
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AC_COMPILE_IFELSE([ |
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AC_LANG_PROGRAM([[ |
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#define __STDC_LIMIT_MACROS 1 /* to make it work also in C++ mode */ |
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#define __STDC_CONSTANT_MACROS 1 /* to make it work also in C++ mode */ |
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#define _GL_JUST_INCLUDE_SYSTEM_STDINT_H 1 /* work if build isn't clean */ |
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#include <stdint.h> |
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/* Dragonfly defines WCHAR_MIN, WCHAR_MAX only in <wchar.h>. */ |
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#if !(defined WCHAR_MIN && defined WCHAR_MAX) |
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#error "WCHAR_MIN, WCHAR_MAX not defined in <stdint.h>" |
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#endif |
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] |
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gl_STDINT_INCLUDES |
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[ |
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#ifdef INT8_MAX |
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int8_t a1 = INT8_MAX; |
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int8_t a1min = INT8_MIN; |
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#endif |
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#ifdef INT16_MAX |
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int16_t a2 = INT16_MAX; |
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int16_t a2min = INT16_MIN; |
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#endif |
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#ifdef INT32_MAX |
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int32_t a3 = INT32_MAX; |
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int32_t a3min = INT32_MIN; |
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#endif |
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#ifdef INT64_MAX |
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int64_t a4 = INT64_MAX; |
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int64_t a4min = INT64_MIN; |
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#endif |
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#ifdef UINT8_MAX |
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uint8_t b1 = UINT8_MAX; |
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#else |
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typedef int b1[(unsigned char) -1 != 255 ? 1 : -1]; |
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#endif |
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#ifdef UINT16_MAX |
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uint16_t b2 = UINT16_MAX; |
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#endif |
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#ifdef UINT32_MAX |
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uint32_t b3 = UINT32_MAX; |
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#endif |
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#ifdef UINT64_MAX |
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uint64_t b4 = UINT64_MAX; |
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#endif |
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int_least8_t c1 = INT8_C (0x7f); |
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int_least8_t c1max = INT_LEAST8_MAX; |
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int_least8_t c1min = INT_LEAST8_MIN; |
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int_least16_t c2 = INT16_C (0x7fff); |
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int_least16_t c2max = INT_LEAST16_MAX; |
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int_least16_t c2min = INT_LEAST16_MIN; |
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int_least32_t c3 = INT32_C (0x7fffffff); |
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int_least32_t c3max = INT_LEAST32_MAX; |
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int_least32_t c3min = INT_LEAST32_MIN; |
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int_least64_t c4 = INT64_C (0x7fffffffffffffff); |
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int_least64_t c4max = INT_LEAST64_MAX; |
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int_least64_t c4min = INT_LEAST64_MIN; |
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uint_least8_t d1 = UINT8_C (0xff); |
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uint_least8_t d1max = UINT_LEAST8_MAX; |
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uint_least16_t d2 = UINT16_C (0xffff); |
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uint_least16_t d2max = UINT_LEAST16_MAX; |
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uint_least32_t d3 = UINT32_C (0xffffffff); |
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uint_least32_t d3max = UINT_LEAST32_MAX; |
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uint_least64_t d4 = UINT64_C (0xffffffffffffffff); |
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uint_least64_t d4max = UINT_LEAST64_MAX; |
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int_fast8_t e1 = INT_FAST8_MAX; |
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int_fast8_t e1min = INT_FAST8_MIN; |
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int_fast16_t e2 = INT_FAST16_MAX; |
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int_fast16_t e2min = INT_FAST16_MIN; |
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int_fast32_t e3 = INT_FAST32_MAX; |
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int_fast32_t e3min = INT_FAST32_MIN; |
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int_fast64_t e4 = INT_FAST64_MAX; |
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int_fast64_t e4min = INT_FAST64_MIN; |
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uint_fast8_t f1 = UINT_FAST8_MAX; |
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uint_fast16_t f2 = UINT_FAST16_MAX; |
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uint_fast32_t f3 = UINT_FAST32_MAX; |
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uint_fast64_t f4 = UINT_FAST64_MAX; |
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#ifdef INTPTR_MAX |
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intptr_t g = INTPTR_MAX; |
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intptr_t gmin = INTPTR_MIN; |
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#endif |
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#ifdef UINTPTR_MAX |
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uintptr_t h = UINTPTR_MAX; |
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#endif |
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intmax_t i = INTMAX_MAX; |
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uintmax_t j = UINTMAX_MAX; |
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|
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#include <limits.h> /* for CHAR_BIT */ |
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#define TYPE_MINIMUM(t) \ |
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((t) ((t) 0 < (t) -1 ? (t) 0 : ~ TYPE_MAXIMUM (t))) |
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#define TYPE_MAXIMUM(t) \ |
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((t) ((t) 0 < (t) -1 \ |
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? (t) -1 \ |
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: ((((t) 1 << (sizeof (t) * CHAR_BIT - 2)) - 1) * 2 + 1))) |
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struct s { |
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int check_PTRDIFF: |
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PTRDIFF_MIN == TYPE_MINIMUM (ptrdiff_t) |
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&& PTRDIFF_MAX == TYPE_MAXIMUM (ptrdiff_t) |
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? 1 : -1; |
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/* Detect bug in FreeBSD 6.0 / ia64. */ |
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int check_SIG_ATOMIC: |
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SIG_ATOMIC_MIN == TYPE_MINIMUM (sig_atomic_t) |
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&& SIG_ATOMIC_MAX == TYPE_MAXIMUM (sig_atomic_t) |
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? 1 : -1; |
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int check_SIZE: SIZE_MAX == TYPE_MAXIMUM (size_t) ? 1 : -1; |
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int check_WCHAR: |
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WCHAR_MIN == TYPE_MINIMUM (wchar_t) |
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&& WCHAR_MAX == TYPE_MAXIMUM (wchar_t) |
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? 1 : -1; |
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/* Detect bug in mingw. */ |
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int check_WINT: |
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WINT_MIN == TYPE_MINIMUM (wint_t) |
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&& WINT_MAX == TYPE_MAXIMUM (wint_t) |
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? 1 : -1; |
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|
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/* Detect bugs in glibc 2.4 and Solaris 10 stdint.h, among others. */ |
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int check_UINT8_C: |
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(-1 < UINT8_C (0)) == (-1 < (uint_least8_t) 0) ? 1 : -1; |
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int check_UINT16_C: |
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(-1 < UINT16_C (0)) == (-1 < (uint_least16_t) 0) ? 1 : -1; |
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|
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/* Detect bugs in OpenBSD 3.9 stdint.h. */ |
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#ifdef UINT8_MAX |
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int check_uint8: (uint8_t) -1 == UINT8_MAX ? 1 : -1; |
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#endif |
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#ifdef UINT16_MAX |
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int check_uint16: (uint16_t) -1 == UINT16_MAX ? 1 : -1; |
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#endif |
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#ifdef UINT32_MAX |
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int check_uint32: (uint32_t) -1 == UINT32_MAX ? 1 : -1; |
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#endif |
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#ifdef UINT64_MAX |
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int check_uint64: (uint64_t) -1 == UINT64_MAX ? 1 : -1; |
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#endif |
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int check_uint_least8: (uint_least8_t) -1 == UINT_LEAST8_MAX ? 1 : -1; |
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int check_uint_least16: (uint_least16_t) -1 == UINT_LEAST16_MAX ? 1 : -1; |
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int check_uint_least32: (uint_least32_t) -1 == UINT_LEAST32_MAX ? 1 : -1; |
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int check_uint_least64: (uint_least64_t) -1 == UINT_LEAST64_MAX ? 1 : -1; |
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int check_uint_fast8: (uint_fast8_t) -1 == UINT_FAST8_MAX ? 1 : -1; |
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int check_uint_fast16: (uint_fast16_t) -1 == UINT_FAST16_MAX ? 1 : -1; |
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int check_uint_fast32: (uint_fast32_t) -1 == UINT_FAST32_MAX ? 1 : -1; |
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int check_uint_fast64: (uint_fast64_t) -1 == UINT_FAST64_MAX ? 1 : -1; |
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int check_uintptr: (uintptr_t) -1 == UINTPTR_MAX ? 1 : -1; |
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int check_uintmax: (uintmax_t) -1 == UINTMAX_MAX ? 1 : -1; |
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int check_size: (size_t) -1 == SIZE_MAX ? 1 : -1; |
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}; |
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]])], |
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[dnl Determine whether the various *_MIN, *_MAX macros are usable |
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dnl in preprocessor expression. We could do it by compiling a test |
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dnl program for each of these macros. It is faster to run a program |
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dnl that inspects the macro expansion. |
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dnl This detects a bug on HP-UX 11.23/ia64. |
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AC_RUN_IFELSE([ |
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AC_LANG_PROGRAM([[ |
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#define __STDC_LIMIT_MACROS 1 /* to make it work also in C++ mode */ |
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#define __STDC_CONSTANT_MACROS 1 /* to make it work also in C++ mode */ |
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#define _GL_JUST_INCLUDE_SYSTEM_STDINT_H 1 /* work if build isn't clean */ |
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#include <stdint.h> |
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] |
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gl_STDINT_INCLUDES |
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[ |
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#include <stdio.h> |
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#include <string.h> |
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#define MVAL(macro) MVAL1(macro) |
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#define MVAL1(expression) #expression |
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static const char *macro_values[] = |
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{ |
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#ifdef INT8_MAX |
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MVAL (INT8_MAX), |
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#endif |
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#ifdef INT16_MAX |
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MVAL (INT16_MAX), |
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#endif |
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#ifdef INT32_MAX |
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MVAL (INT32_MAX), |
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#endif |
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#ifdef INT64_MAX |
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MVAL (INT64_MAX), |
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#endif |
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#ifdef UINT8_MAX |
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MVAL (UINT8_MAX), |
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#endif |
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#ifdef UINT16_MAX |
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MVAL (UINT16_MAX), |
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#endif |
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#ifdef UINT32_MAX |
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MVAL (UINT32_MAX), |
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#endif |
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#ifdef UINT64_MAX |
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MVAL (UINT64_MAX), |
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#endif |
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NULL |
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}; |
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]], [[ |
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const char **mv; |
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for (mv = macro_values; *mv != NULL; mv++) |
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{ |
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const char *value = *mv; |
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/* Test whether it looks like a cast expression. */ |
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if (strncmp (value, "((unsigned int)"/*)*/, 15) == 0 |
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|| strncmp (value, "((unsigned short)"/*)*/, 17) == 0 |
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|| strncmp (value, "((unsigned char)"/*)*/, 16) == 0 |
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|| strncmp (value, "((int)"/*)*/, 6) == 0 |
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|| strncmp (value, "((signed short)"/*)*/, 15) == 0 |
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|| strncmp (value, "((signed char)"/*)*/, 14) == 0) |
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return mv - macro_values + 1; |
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} |
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return 0; |
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]])], |
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[gl_cv_header_working_stdint_h=yes], |
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[], |
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[dnl When cross-compiling, assume it works. |
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gl_cv_header_working_stdint_h=yes |
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]) |
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]) |
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]) |
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fi |
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if test "$gl_cv_header_working_stdint_h" = yes; then |
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STDINT_H= |
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else |
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dnl Check for <sys/inttypes.h>, and for |
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dnl <sys/bitypes.h> (used in Linux libc4 >= 4.6.7 and libc5). |
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AC_CHECK_HEADERS([sys/inttypes.h sys/bitypes.h]) |
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if test $ac_cv_header_sys_inttypes_h = yes; then |
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HAVE_SYS_INTTYPES_H=1 |
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else |
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HAVE_SYS_INTTYPES_H=0 |
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fi |
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AC_SUBST([HAVE_SYS_INTTYPES_H]) |
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if test $ac_cv_header_sys_bitypes_h = yes; then |
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HAVE_SYS_BITYPES_H=1 |
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else |
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HAVE_SYS_BITYPES_H=0 |
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fi |
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AC_SUBST([HAVE_SYS_BITYPES_H]) |
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|
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gl_STDINT_TYPE_PROPERTIES |
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STDINT_H=stdint.h |
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fi |
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AC_SUBST([STDINT_H]) |
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AM_CONDITIONAL([GL_GENERATE_STDINT_H], [test -n "$STDINT_H"]) |
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]) |
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|
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dnl gl_STDINT_BITSIZEOF(TYPES, INCLUDES) |
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dnl Determine the size of each of the given types in bits. |
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AC_DEFUN([gl_STDINT_BITSIZEOF], |
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[ |
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dnl Use a shell loop, to avoid bloating configure, and |
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dnl - extra AH_TEMPLATE calls, so that autoheader knows what to put into |
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dnl config.h.in, |
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dnl - extra AC_SUBST calls, so that the right substitutions are made. |
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m4_foreach_w([gltype], [$1], |
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[AH_TEMPLATE([BITSIZEOF_]m4_translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_]), |
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[Define to the number of bits in type ']gltype['.])]) |
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for gltype in $1 ; do |
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AC_CACHE_CHECK([for bit size of $gltype], [gl_cv_bitsizeof_${gltype}], |
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[AC_COMPUTE_INT([result], [sizeof ($gltype) * CHAR_BIT], |
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[$2 |
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#include <limits.h>], [result=unknown]) |
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eval gl_cv_bitsizeof_${gltype}=\$result |
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]) |
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eval result=\$gl_cv_bitsizeof_${gltype} |
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if test $result = unknown; then |
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dnl Use a nonempty default, because some compilers, such as IRIX 5 cc, |
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dnl do a syntax check even on unused #if conditions and give an error |
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dnl on valid C code like this: |
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dnl #if 0 |
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dnl # if > 32 |
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dnl # endif |
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dnl #endif |
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result=0 |
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fi |
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GLTYPE=`echo "$gltype" | tr 'abcdefghijklmnopqrstuvwxyz ' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'` |
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AC_DEFINE_UNQUOTED([BITSIZEOF_${GLTYPE}], [$result]) |
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eval BITSIZEOF_${GLTYPE}=\$result |
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done |
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m4_foreach_w([gltype], [$1], |
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[AC_SUBST([BITSIZEOF_]m4_translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_]))]) |
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]) |
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|
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dnl gl_CHECK_TYPES_SIGNED(TYPES, INCLUDES) |
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dnl Determine the signedness of each of the given types. |
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dnl Define HAVE_SIGNED_TYPE if type is signed. |
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AC_DEFUN([gl_CHECK_TYPES_SIGNED], |
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[ |
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dnl Use a shell loop, to avoid bloating configure, and |
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dnl - extra AH_TEMPLATE calls, so that autoheader knows what to put into |
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dnl config.h.in, |
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dnl - extra AC_SUBST calls, so that the right substitutions are made. |
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m4_foreach_w([gltype], [$1], |
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[AH_TEMPLATE([HAVE_SIGNED_]m4_translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_]), |
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[Define to 1 if ']gltype[' is a signed integer type.])]) |
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for gltype in $1 ; do |
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AC_CACHE_CHECK([whether $gltype is signed], [gl_cv_type_${gltype}_signed], |
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[AC_COMPILE_IFELSE( |
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[AC_LANG_PROGRAM([$2[ |
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int verify[2 * (($gltype) -1 < ($gltype) 0) - 1];]])], |
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result=yes, result=no) |
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eval gl_cv_type_${gltype}_signed=\$result |
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]) |
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eval result=\$gl_cv_type_${gltype}_signed |
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GLTYPE=`echo $gltype | tr 'abcdefghijklmnopqrstuvwxyz ' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'` |
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if test "$result" = yes; then |
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AC_DEFINE_UNQUOTED([HAVE_SIGNED_${GLTYPE}], [1]) |
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eval HAVE_SIGNED_${GLTYPE}=1 |
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else |
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eval HAVE_SIGNED_${GLTYPE}=0 |
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fi |
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done |
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m4_foreach_w([gltype], [$1], |
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[AC_SUBST([HAVE_SIGNED_]m4_translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_]))]) |
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]) |
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|
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dnl gl_INTEGER_TYPE_SUFFIX(TYPES, INCLUDES) |
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dnl Determine the suffix to use for integer constants of the given types. |
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dnl Define t_SUFFIX for each such type. |
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AC_DEFUN([gl_INTEGER_TYPE_SUFFIX], |
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[ |
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dnl Use a shell loop, to avoid bloating configure, and |
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dnl - extra AH_TEMPLATE calls, so that autoheader knows what to put into |
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dnl config.h.in, |
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dnl - extra AC_SUBST calls, so that the right substitutions are made. |
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m4_foreach_w([gltype], [$1], |
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[AH_TEMPLATE(m4_translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_])[_SUFFIX], |
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[Define to l, ll, u, ul, ull, etc., as suitable for |
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constants of type ']gltype['.])]) |
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for gltype in $1 ; do |
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AC_CACHE_CHECK([for $gltype integer literal suffix], |
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[gl_cv_type_${gltype}_suffix], |
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[eval gl_cv_type_${gltype}_suffix=no |
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eval result=\$gl_cv_type_${gltype}_signed |
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if test "$result" = yes; then |
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glsufu= |
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else |
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glsufu=u |
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fi |
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for glsuf in "$glsufu" ${glsufu}l ${glsufu}ll ${glsufu}i64; do |
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case $glsuf in |
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'') gltype1='int';; |
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l) gltype1='long int';; |
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ll) gltype1='long long int';; |
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i64) gltype1='__int64';; |
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u) gltype1='unsigned int';; |
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ul) gltype1='unsigned long int';; |
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ull) gltype1='unsigned long long int';; |
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ui64)gltype1='unsigned __int64';; |
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esac |
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AC_COMPILE_IFELSE( |
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[AC_LANG_PROGRAM([$2[ |
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extern $gltype foo; |
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extern $gltype1 foo;]])], |
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[eval gl_cv_type_${gltype}_suffix=\$glsuf]) |
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eval result=\$gl_cv_type_${gltype}_suffix |
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test "$result" != no && break |
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done]) |
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GLTYPE=`echo $gltype | tr 'abcdefghijklmnopqrstuvwxyz ' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'` |
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eval result=\$gl_cv_type_${gltype}_suffix |
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test "$result" = no && result= |
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eval ${GLTYPE}_SUFFIX=\$result |
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AC_DEFINE_UNQUOTED([${GLTYPE}_SUFFIX], [$result]) |
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done |
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m4_foreach_w([gltype], [$1], |
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[AC_SUBST(m4_translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_])[_SUFFIX])]) |
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]) |
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|
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dnl gl_STDINT_INCLUDES |
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AC_DEFUN([gl_STDINT_INCLUDES], |
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[[ |
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/* BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be |
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included before <wchar.h>. */ |
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#include <stddef.h> |
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#include <signal.h> |
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#if HAVE_WCHAR_H |
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# include <stdio.h> |
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# include <time.h> |
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# include <wchar.h> |
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#endif |
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]]) |
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|
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dnl gl_STDINT_TYPE_PROPERTIES |
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dnl Compute HAVE_SIGNED_t, BITSIZEOF_t and t_SUFFIX, for all the types t |
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dnl of interest to stdint.in.h. |
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AC_DEFUN([gl_STDINT_TYPE_PROPERTIES], |
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[ |
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AC_REQUIRE([gl_MULTIARCH]) |
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if test $APPLE_UNIVERSAL_BUILD = 0; then |
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gl_STDINT_BITSIZEOF([ptrdiff_t size_t], |
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[gl_STDINT_INCLUDES]) |
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fi |
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gl_STDINT_BITSIZEOF([sig_atomic_t wchar_t wint_t], |
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[gl_STDINT_INCLUDES]) |
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gl_CHECK_TYPES_SIGNED([sig_atomic_t wchar_t wint_t], |
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[gl_STDINT_INCLUDES]) |
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gl_cv_type_ptrdiff_t_signed=yes |
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gl_cv_type_size_t_signed=no |
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if test $APPLE_UNIVERSAL_BUILD = 0; then |
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gl_INTEGER_TYPE_SUFFIX([ptrdiff_t size_t], |
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[gl_STDINT_INCLUDES]) |
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fi |
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gl_INTEGER_TYPE_SUFFIX([sig_atomic_t wchar_t wint_t], |
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[gl_STDINT_INCLUDES]) |
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]) |
|
|
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dnl Autoconf >= 2.61 has AC_COMPUTE_INT built-in. |
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dnl Remove this when we can assume autoconf >= 2.61. |
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m4_ifdef([AC_COMPUTE_INT], [], [ |
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AC_DEFUN([AC_COMPUTE_INT], [_AC_COMPUTE_INT([$2],[$1],[$3],[$4])]) |
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]) |
|
|
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# Hey Emacs! |
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# Local Variables: |
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# indent-tabs-mode: nil |
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# End:
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|