CUDA: Visual Studio propagate objects to device linking

When given objects via `target_link_libraries(consumer PRIVATE producer)` the VisualStudio solution adds the objects
under as `<Object>` entries in the solution.

This works for host side linking but isn't handled by
the cuda msbuild extensions. So to work around this we
manually add the objects as additional link items.

Source/cmVisualStudio10TargetGenerator.cxx

@@ -3864,22 +3864,41 @@ bool cmVisualStudio10TargetGenerator::ComputeCudaLinkOptions(
   }
   cudaLinkOptions.AppendFlagString("AdditionalOptions", linkFlags);
 
-  // For static libraries that have device linking enabled compute
-  // the  libraries
-  if (this->GeneratorTarget->GetType() == cmStateEnums::STATIC_LIBRARY &&
-      doDeviceLinking) {
-    cmComputeLinkInformation& cli = *pcli;
-    cmLinkLineDeviceComputer computer(
-      this->LocalGenerator,
-      this->LocalGenerator->GetStateSnapshot().GetDirectory());
-    std::vector<BT<std::string>> btLibVec;
-    computer.ComputeLinkLibraries(cli, std::string{}, btLibVec);
+  if (doDeviceLinking) {
     std::vector<std::string> libVec;
-    for (auto const& item : btLibVec) {
-      libVec.emplace_back(item.Value);
+    auto const& kinded = this->GeneratorTarget->GetKindedSources(configName);
+    // CMake conversion uses full paths when possible to allow deeper trees.
+    // However, CUDA 8.0 msbuild rules fail on absolute paths so for CUDA
+    // we must use relative paths.
+    const bool forceRelative = true;
+    for (cmGeneratorTarget::SourceAndKind const& si : kinded.Sources) {
+      switch (si.Kind) {
+        case cmGeneratorTarget::SourceKindExternalObject: {
+          std::string path =
+            this->ConvertPath(si.Source.Value->GetFullPath(), forceRelative);
+          ConvertToWindowsSlash(path);
+          libVec.emplace_back(std::move(path));
+        } break;
+        default:
+          break;
+      }
+    }
+    // For static libraries that have device linking enabled compute
+    // the  libraries
+    if (this->GeneratorTarget->GetType() == cmStateEnums::STATIC_LIBRARY) {
+      cmComputeLinkInformation& cli = *pcli;
+      cmLinkLineDeviceComputer computer(
+        this->LocalGenerator,
+        this->LocalGenerator->GetStateSnapshot().GetDirectory());
+      std::vector<BT<std::string>> btLibVec;
+      computer.ComputeLinkLibraries(cli, std::string{}, btLibVec);
+      for (auto const& item : btLibVec) {
+        libVec.emplace_back(item.Value);
+      }
+    }
+    if (!libVec.empty()) {
+      cudaLinkOptions.AddFlag("AdditionalDependencies", libVec);
     }
-
-    cudaLinkOptions.AddFlag("AdditionalDependencies", libVec);
   }
 
   this->CudaLinkOptions[configName] = std::move(pOptions);