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