when linking many objects with -g option,
"Error 42: Symbol Undefined" happens even if symbol exists.
the code is work fine without -g.

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OPTLINK (R) for Win32  Release 7.50B1
Copyright (C) Digital Mars 1989 - 2001  All Rights Reserved

..\..\wxd.lib(ChoiceDialog)
 Error 42: Symbol Undefined _wxGetMultipleChoice_func