- [AC_TRY_COMPILE([
-#if HAVE_STDLIB_H
-# include <stdlib.h>
-#endif
-#include <wchar.h>],
- [mbstate_t *x; return sizeof x;],
- ac_cv_type_mbstate_t=yes,
- ac_cv_type_mbstate_t=no)])
- if test $ac_cv_type_mbstate_t != yes; then
- AC_DEFINE(mbstate_t, int,
- [Define to int if <wchar.h> does not define.])
+ [AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM(
+ [AC_INCLUDES_DEFAULT[
+# include <wchar.h>]],
+ [[mbstate_t x; return sizeof x;]])],
+ [ac_cv_type_mbstate_t=yes],
+ [ac_cv_type_mbstate_t=no])])
+ if test $ac_cv_type_mbstate_t = yes; then
+ AC_DEFINE([HAVE_MBSTATE_T], 1,
+ [Define to 1 if <wchar.h> declares mbstate_t.])
+ else
+ AC_DEFINE([mbstate_t], int,
+ [Define to a type if <wchar.h> does not define.])