[cmake-developers] patch for FindCUDA.cmake

[Mark Abraham]

Hi,

The FindCUDA.cmake module since v3.0 has had a bug because it assumes that
when cross compiling that CMAKE_SYSTEM_PROCESSOR will be defined. That
definition is documented as optional at
http://www.vtk.org/Wiki/CMake_Cross_Compiling, and the module can't work if
it happens to be undefined. Attached patch
wraps the uses of CMAKE_SYSTEM_PROCESSOR in quotes so that interpolation
will lead to the intended behaviour in all cases.

I haven't filed a bug report, per
http://www.cmake.org/Wiki/CMake_FAQ#I_found_a_Bug.21_What_should_I_do.3F

Thanks,

Mark
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