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CUDA_PTX_COMPILATION
New in version 3.9.
Compile CUDA sources to .ptx files instead of .obj files within Object Libraries.
For example:
add_library(myptx OBJECT a.cu b.cu)
set_property(TARGET myptx PROPERTY CUDA_PTX_COMPILATION ON)
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Licensed under the BSD 3-clause License.
 https://cmake.org/cmake/help/v3.23/prop_tgt/CUDA_PTX_COMPILATION.html