Merge topic 'FindCUDA.cmake/UseCMAKE_CXX_FLAGS_separableCompilation'

b4e54f9b FindCUDA: Add relevant CMAKE_{C,CXX}_FLAGS for separable compilation

Modules/FindCUDA.cmake

@@ -1423,7 +1423,8 @@ function(CUDA_LINK_SEPARABLE_COMPILATION_OBJECTS output_file cuda_target options
     if( ccbin_found0 LESS 0 AND ccbin_found1 LESS 0 AND CUDA_HOST_COMPILER )
       list(APPEND nvcc_flags -ccbin "\"${CUDA_HOST_COMPILER}\"")
     endif()
-    # Create a list of flags specified by CUDA_NVCC_FLAGS_${CONFIG}
+
+    # Create a list of flags specified by CUDA_NVCC_FLAGS_${CONFIG} and CMAKE_${CUDA_C_OR_CXX}_FLAGS*
     set(config_specific_flags)
     set(flags)
     foreach(config ${CUDA_configuration_types})
@@ -1438,6 +1439,13 @@ function(CUDA_LINK_SEPARABLE_COMPILATION_OBJECTS output_file cuda_target options
         list(APPEND flags $<$<CONFIG:${config}>:-Xcompiler> $<$<CONFIG:${config}>:${f}>)
       endforeach()
     endforeach()
+    # Add CMAKE_${CUDA_C_OR_CXX}_FLAGS
+    set(important_host_flags)
+    _cuda_get_important_host_flags(important_host_flags ${CMAKE_${CUDA_C_OR_CXX}_FLAGS})
+    foreach(f ${important_host_flags})
+      list(APPEND flags -Xcompiler ${f})
+    endforeach()
+
     # Add our general CUDA_NVCC_FLAGS with the configuration specifig flags
     set(nvcc_flags ${CUDA_NVCC_FLAGS} ${config_specific_flags} ${nvcc_flags})