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Using Cmake, we use the following command

cmake CMakeLists.txt -G "Visual Studio 11"

to generate a Visual Studio 2012 solution file, which by-default uses /fp:precise as floating point option. Is there any way to change this to /fp:fast in CMake?

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You can specify options with various CMake variables, e.g. CMAKE_CXX_FLAGS, CMAKE_CXX_FLAGS_RELEASE, CMAKE_CXX_FLAGS_DEBUG for C++ compiler options. Try set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /fp:fast"). I think you can also change them from within the GUI (tick the Advanced checkmark). For C you'd have to use the CMAKE_C_FLAGS... variants.

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