Command-Line Warning D9030
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Command-Line Warning D9030

Visual Studio 2008
operation is incompatible with multiprocessing; ignoring /MP switch

A compiler option, which is referred to as an operation in this warning message, is incompatible with the /MP compiler option. Consequently, the compiler ignores the /MP option and continues the compilation.

// D9030 expected
cl /Gm /MP a.cpp b.cpp c.cpp d.cpp

In this example, the /MP and /Gm (enable minimal rebuilds) compiler options are specified. Consequently, the compiler issues warning D9030, then ignores the /MP option.

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