visual c libraries: I have a DLL with mixed mode code that uses a couple of unmanaged static
libraries. I had been generating the static libraries with Code Generation
set to Single-threaded Debug (/MLd). The DLL is set to
Multi-threaded Debug DLL (/MDd) - The app that call the DLL is set to
Multi-threaded Debug (/MTd). I was reading an article that stated all libs
should be set to be consistant. Does that mean that my static libs should be
built with Multi-threaded Debug DLL (/MDd) ? And is it OK to have a
Multi-threaded Debug DLL (/MDd) DLL with an Exe that uses Multi-threaded
Debug (/MTd).

Thanks.

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That would be the simplest recommended way. While in some
circumstances you might not have any problem, I wouldn't count on it.

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It depends on whether you pass heap allocated objects or other 'C'
run-time object across the DLL boundary. If you do, all components
must be built with the shared DLL library. Since you have the DLL
run-time anyway for one component, presumably it'd be no extra
overhead (and possibly much smaller) if they all used the DLL version.