# mbstate_t.m4 serial 12

dnl Copyright (C) 2000-2002, 2008-2010 Free Software Foundation, Inc.

dnl This file is free software; the Free Software Foundation

dnl gives unlimited permission to copy and/or distribute it,

dnl with or without modifications, as long as this notice is preserved.

# From Paul Eggert.

# BeOS 5 has <wchar.h> but does not define mbstate_t,

# so you can't declare an object of that type.

# Check for this incompatibility with Standard C.

# AC_TYPE_MBSTATE_T

# -----------------

AC_DEFUN([AC_TYPE_MBSTATE_T],

[

AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) dnl for HP-UX 11.11

AC_CACHE_CHECK([for mbstate_t], [ac_cv_type_mbstate_t],

[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.])

fi

])