cmake_minimum_required(VERSION 3.27) project(cxx_modules_same_src_name CXX) include("${CMAKE_SOURCE_DIR}/../cxx-modules-rules.cmake") add_executable(same_src_name) target_sources(same_src_name PRIVATE main.cxx PRIVATE FILE_SET CXX_MODULES BASE_DIRS "${CMAKE_CURRENT_SOURCE_DIR}" FILES a/same.cxx b/same.cxx ) target_compile_features(same_src_name PUBLIC cxx_std_20) add_test(NAME same_src_name COMMAND same_src_name)