PRECOMPILED_CXX
Use the PRECOMPILED_CXX macro to indicate whether the precompiled header that you are building will be used with files that are written in C or C++.
In the Windows Driver Kit (WDK), the default behavior is to use precompiled headers with files written in C. Therefore, you should not set PRECOMPILED_CXX if your project will use the precompiled header with files written in C.
To use the precompiled header with C++ files, specify:
PRECOMPILED_CXX=1
See Also
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Build date: 5/3/2011