diff -up afflib-3.3.4/configure.ac.WCtype afflib-3.3.4/configure.ac
--- afflib-3.3.4/configure.ac.WCtype	2008-09-29 21:45:05.000000000 +0200
+++ afflib-3.3.4/configure.ac	2009-03-02 11:58:36.000000000 +0100
@@ -101,6 +101,18 @@ AC_LANG_POP([C++])
 
 
 
+AS_IF([test "x$ac_afflib_enable_wide_character_type" != xno ],
+	[AC_DEFINE([HAVE_WIDE_CHARACTER_TYPE],[1],[Defines if wide character type should be used])
+		AC_CHECK_FUNCS([btowc fgetws mbsinit mbsrtowcs swprintf wmain wmemchr wmemcmp wmemcpy wmemrchr wctob wcschr wcscmp wcscpy wcsdup wcslen wcsncmp wcsncpy wcsrchr wcsrtombs wcstol wcstoul])
+		AC_CHECK_HEADERS([wchar.h],
+			[AC_DEFINE([HAVE_WCHAR_H],[1],[Define to 1 if you have the <wchar.h> header file.])
+			AC_SUBST([HAVE_WCHAR_H],[1])],
+			[AC_SUBST([HAVE_WCHAR_H],[0])])
+
+		AC_SUBST([HAVE_WIDE_CHARACTER_TYPE],[1])],
+	[AC_SUBST([HAVE_WIDE_CHARACTER_TYPE],[0])
+	AC_SUBST([HAVE_WCHAR_H],[0])])
+
 ################################################################
 ## LIBEWF support
 dnl Function to test if a libewf_get_media_size takes value as an argument