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| 1 | # serial 8 | 
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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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