| 1 | # serial 9 |
| 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]) |