include current source dir

Author: Murmele

test/CMakeLists.txt

@@ -18,9 +18,11 @@ add_executable(tests ${TEST_SOURCES})
 target_compile_definitions(tests PRIVATE TESTDBCFILES_PATH="${CMAKE_CURRENT_SOURCE_DIR}/dbcs")
 target_link_libraries(tests PRIVATE dbc Catch2::Catch2WithMain)
 if (${CMAKE_MINOR_VERSION} GREATER_EQUAL 23)
-    target_sources(tests INTERFACE FILE_SET HEADERS
+    target_sources(tests PRIVATE FILE_SET HEADERS
                                    TYPE HEADERS
                                    BASE_DIRS ${CMAKE_CURRENT_SOURCE_DIR}
                                    FILES defines.hpp)
+else()
+    target_include_directories(tests PRIVATE ${CMAKE_CURRENT_SOURCE_DIR})
 endif()
 catch_discover_tests(tests)