added stub source file for cudftestutil_impl's OBJECT target compilation

cpp/tests/CMakeLists.txt

@@ -17,7 +17,7 @@
 ###################################################################################################
 # - compiler function -----------------------------------------------------------------------------
 
-add_library(cuspatial_test_common OBJECT)
+add_library(cuspatial_test_common OBJECT test_common.cpp)
 
 target_compile_features(cuspatial_test_common PUBLIC cxx_std_17 cuda_std_17)
 

cpp/tests/test_common.cpp

@@ -0,0 +1,15 @@
+/*
+ * Copyright (c) 2024, NVIDIA CORPORATION.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */