diff --git a/CMakeLists.txt b/CMakeLists.txt
index ef2d2ce..3d85595 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -54,5 +54,11 @@ target_link_libraries(${APP_NAME}
 
 # 拷贝配置文件（仅在不存在时）
 add_custom_command(TARGET ${APP_NAME} POST_BUILD
-    COMMAND bash -c "if [ ! -f \"$<TARGET_FILE_DIR:${APP_NAME}>/${CONFIG_FILE}\" ]; then mkdir -p \"$<TARGET_FILE_DIR:${APP_NAME}>\" && cp \"${CMAKE_SOURCE_DIR}/${CONFIG_EXAMPLE_FILE}\" \"$<TARGET_FILE_DIR:${APP_NAME}>/${CONFIG_FILE}\" && echo \"config.json created from example\"; else echo \"config.json exists, keep it\"; fi"
+    # 确保目标目录存在
+    COMMAND ${CMAKE_COMMAND} -E make_directory "$<TARGET_FILE_DIR:${APP_NAME}>"
+    # 复制配置文件（仅当源文件比目标文件新时）
+    COMMAND ${CMAKE_COMMAND} -E copy_if_different
+        "${CMAKE_SOURCE_DIR}/${CONFIG_EXAMPLE_FILE}"
+        "$<TARGET_FILE_DIR:${APP_NAME}>/${CONFIG_FILE}"
+    COMMENT "复制配置文件到输出目录"
 )