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| 1 | # mbstate_t.m4 serial 9
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| 2 | dnl Copyright (C) 2000, 2001, 2002 Free Software Foundation, Inc.
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| 3 | dnl This file is free software; the Free Software Foundation
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| 4 | dnl gives unlimited permission to copy and/or distribute it,
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| 5 | dnl with or without modifications, as long as this notice is preserved.
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| 6 |
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| 7 | # From Paul Eggert.
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| 8 |
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| 9 | # BeOS 5 has <wchar.h> but does not define mbstate_t,
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| 10 | # so you can't declare an object of that type.
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| 11 | # Check for this incompatibility with Standard C.
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| 12 |
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| 13 | # AC_TYPE_MBSTATE_T
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| 14 | # -----------------
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| 15 | AC_DEFUN([AC_TYPE_MBSTATE_T],
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| 16 | [AC_CACHE_CHECK([for mbstate_t], ac_cv_type_mbstate_t,
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| 17 | [AC_COMPILE_IFELSE(
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| 18 | [AC_LANG_PROGRAM(
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| 19 | [AC_INCLUDES_DEFAULT
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| 20 | # include <wchar.h>],
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| 21 | [mbstate_t x; return sizeof x;])],
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| 22 | [ac_cv_type_mbstate_t=yes],
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| 23 | [ac_cv_type_mbstate_t=no])])
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| 24 | if test $ac_cv_type_mbstate_t = yes; then
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| 25 | AC_DEFINE([HAVE_MBSTATE_T], 1,
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| 26 | [Define to 1 if <wchar.h> declares mbstate_t.])
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| 27 | else
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| 28 | AC_DEFINE([mbstate_t], int,
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| 29 | [Define to a type if <wchar.h> does not define.])
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| 30 | fi])
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