should be it

external/duckdb/test/api/CMakeLists.txt

@@ -0,0 +1,55 @@
+if(NOT CLANG_TIDY)
+  add_subdirectory(adbc)
+endif()
+
+if(${DISABLE_THREADS})
+  add_definitions(-DDUCKDB_NO_THREADS)
+endif()
+
+add_subdirectory(capi)
+add_subdirectory(udf_function)
+
+set(TEST_API_OBJECTS
+    test_api.cpp
+    test_config.cpp
+    test_custom_allocator.cpp
+    test_extension_setting_autoload.cpp
+    test_instance_cache.cpp
+    test_results.cpp
+    test_reset.cpp
+    test_get_table_names.cpp
+    test_prepared_api.cpp
+    test_table_info.cpp
+    test_appender_api.cpp
+    test_lifecycle_hooks.cpp
+    test_pending_query.cpp
+    test_plan_serialization.cpp
+    test_relation_api.cpp
+    test_query_profiler.cpp
+    test_dbdir.cpp
+    test_pending_with_parameters.cpp
+    test_progress_bar.cpp
+    test_uuid.cpp
+    test_insertion_order_preserving_map.cpp
+    test_bignum.cpp
+    test_threads.cpp
+    test_windows_header_compatibility.cpp
+    test_windows_unicode_path.cpp
+    test_object_cache.cpp)
+
+if(NOT WIN32)
+  set(TEST_API_OBJECTS ${TEST_API_OBJECTS} test_read_only.cpp)
+endif()
+
+if(DUCKDB_EXTENSION_TPCH_SHOULD_LINK)
+  include_directories(../../extension/tpch/include)
+  set(TEST_API_OBJECTS
+      ${TEST_API_OBJECTS} test_tpch_with_relations.cpp
+      test_tpch_with_streaming.cpp
+      serialized_plans/test_plan_serialization_bwc.cpp)
+endif()
+
+add_library(test_api OBJECT ${TEST_API_OBJECTS})
+set(ALL_OBJECT_FILES
+    ${ALL_OBJECT_FILES} $<TARGET_OBJECTS:test_api>
+    PARENT_SCOPE)