--- libiodbc-3.52.7/include/sqltypes.h.orig
+++ libiodbc-3.52.7/include/sqltypes.h
@@ -401,6 +401,7 @@
 #  include <stdlib.h>
 
 #  if defined(__cplusplus)		|| \
+      defined(__NEED_wchar_t)		|| \
       defined(_WCHAR_T)			|| \
       defined(_WCHAR_T_DEFINED)		|| \
       defined(_WCHAR_T_DEFINED_)	|| \