Fixes #572, regards #519: External memory and CUDA 10.x:

* Not including any code regarding external memory for CUDA versions earlier than 10.0, as it is not supported
* External memory handle kinds not supported before CUDA 10.2 are now only included start with that version

src/cuda/api.hpp

@@ -55,7 +55,9 @@
 #include "api/launch_configuration.hpp"
 #include "api/kernel_launch.hpp"
 #include "api/virtual_memory.hpp"
+#if CUDA_VERSION >= 10000
 #include "api/external.hpp"
+#endif // CUDA_VERSION >= 10000
 
 #include "api/multi_wrapper_impls/pointer.hpp"
 #include "api/multi_wrapper_impls/array.hpp"

src/cuda/api/external.hpp

@@ -22,9 +22,11 @@ enum kind_t : ::std::underlying_type<CUexternalMemoryHandleType_enum>::type {
 	opaque_globally_shared_windows_handle = CU_EXTERNAL_MEMORY_HANDLE_TYPE_OPAQUE_WIN32_KMT,
 	direct3d_12_heap = CU_EXTERNAL_MEMORY_HANDLE_TYPE_D3D12_HEAP,
 	direct3d_12_committed_resource = CU_EXTERNAL_MEMORY_HANDLE_TYPE_D3D12_RESOURCE,
+#if CUDA_VERSION >= 10200
 	direct3d_resource_shared_windows_handle = CU_EXTERNAL_MEMORY_HANDLE_TYPE_D3D11_RESOURCE,
 	direct3d_resource_globally_shared_handle = CU_EXTERNAL_MEMORY_HANDLE_TYPE_D3D11_RESOURCE_KMT,
 	nvscibuf_object = CU_EXTERNAL_MEMORY_HANDLE_TYPE_NVSCIBUF
+#endif // CUDA_VERSION >= 10200
 };
 
 using descriptor_t = CUDA_EXTERNAL_MEMORY_HANDLE_DESC;

src/cuda/api/types.hpp

@@ -817,6 +817,7 @@ enum class barrier_scope_t : typename ::std::underlying_type<CUstreamMemoryBarri
 };
 #endif // CUDA_VERSION >= 11700
 
+#if CUDA_VERSION >= 10000
 /**
  * Representation of memory resources external to CUDA
  */
@@ -834,6 +835,8 @@ struct subregion_spec_t {
 
 } // namespace external
 
+#endif // CUDA_VERSION >= 10000
+
 } // namespace memory
 
 /**