+ AC_CHECK_DECLS([mbsinit],,, [[
+/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
+ <wchar.h>.
+ BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
+ included before <wchar.h>. */
+#include <stddef.h>
+#include <stdio.h>
+#include <time.h>
+#include <wchar.h>
+]])
+ if test $ac_cv_have_decl_mbsinit = yes; then
+ dnl On Minix 3.1.8, the system's <wchar.h> declares mbsinit() although
+ dnl it does not have the function. Avoid a collision with gnulib's
+ dnl replacement.
+ REPLACE_MBSINIT=1
+ fi
+ else
+ if test $REPLACE_MBSTATE_T = 1; then
+ REPLACE_MBSINIT=1
+ else
+ dnl On mingw, mbsinit() always returns 1, which is inappropriate for
+ dnl states produced by mbrtowc() for an incomplete multibyte character
+ dnl in multibyte locales.
+ case "$host_os" in
+ mingw*) REPLACE_MBSINIT=1 ;;
+ esac
+ fi