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| 1 | # serial 9
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| 2 |
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| 3 | # From Paul Eggert.
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| 4 |
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| 5 | # BeOS 5 has <wchar.h> but does not define mbstate_t,
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| 6 | # so you can't declare an object of that type.
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| 7 | # Check for this incompatibility with Standard C.
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| 8 |
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| 9 | # Include stdlib.h first, because otherwise this test would fail on Linux
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| 10 | # (at least glibc-2.1.3) because the "_XOPEN_SOURCE 500" definition elicits
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| 11 | # a syntax error in wchar.h due to the use of undefined __int32_t.
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| 12 |
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| 13 | AC_DEFUN([AC_MBSTATE_T],
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| 14 | [
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| 15 | AC_CHECK_HEADERS(stdlib.h)
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| 16 |
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| 17 | AC_CACHE_CHECK([for mbstate_t], ac_cv_type_mbstate_t,
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| 18 | [AC_TRY_COMPILE([
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| 19 | #if HAVE_STDLIB_H
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| 20 | # include <stdlib.h>
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| 21 | #endif
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| 22 | #include <wchar.h>],
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| 23 | [mbstate_t x; return sizeof x;],
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| 24 | ac_cv_type_mbstate_t=yes,
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| 25 | ac_cv_type_mbstate_t=no)])
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| 26 | if test $ac_cv_type_mbstate_t = no; then
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| 27 | AC_DEFINE(mbstate_t, int,
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| 28 | [Define to a type if <wchar.h> does not define.])
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| 29 | fi])
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