-# mbchar.m4 serial 1
+# mbchar.m4 serial 2
dnl Copyright (C) 2005 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
AC_DEFUN([gl_MBCHAR],
[
AC_REQUIRE([AC_GNU_SOURCE])
- :
+ dnl The following line is that so the user can test
+ dnl HAVE_WCHAR_H && HAVE_WCTYPE_H before #include "mbchar.h".
+ AC_CHECK_HEADERS_ONCE(wchar.h wctype.h)
+ dnl Compile mbchar.c only if HAVE_WCHAR_H && HAVE_WCTYPE_H.
+ if test $ac_cv_header_wchar_h = yes && test $ac_cv_header_wctype_h = yes; then
+ AC_LIBOBJ([mbchar])
+ fi
])