diff options
Diffstat (limited to 'm4/mbstate_t.m4')
-rw-r--r-- | m4/mbstate_t.m4 | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/m4/mbstate_t.m4 b/m4/mbstate_t.m4 index 4cbbfd5b8..aca2df347 100644 --- a/m4/mbstate_t.m4 +++ b/m4/mbstate_t.m4 @@ -1,4 +1,4 @@ -# serial 1 +# serial 2 # From Paul Eggert. @@ -6,9 +6,14 @@ # so you can't declare an object of that type. # Check for this incompatibility with Standard C. +# Include stdio.h first, because otherwise this test would fail on Linux +# (at least 2.2.16) because the `_XOPEN_SOURCE 500' definition elicits +# a syntax error in wchar.h due to the use of undefined __int32_t. + AC_DEFUN(AC_MBSTATE_T_OBJECT, [AC_CACHE_CHECK([for mbstate_t object type], ac_cv_type_mbstate_t_object, - [AC_TRY_COMPILE([#include <wchar.h>], + [AC_TRY_COMPILE([#include <stdio.h> +#include <wchar.h>], [mbstate_t x; return sizeof x;], ac_cv_type_mbstate_t_object=yes, ac_cv_type_mbstate_t_object=no)]) |