fix: 优化打包后的目录结构，便于引入

CMakeLists.txt

@@ -28,3 +28,50 @@ if(BUILD_TESTING OR NOT DEFINED BUILD_TESTING)
     target_link_libraries(test_datarouter DataRouter)
     add_test(NAME datarouter COMMAND test_datarouter)
 endif()
+
+# ======== 安装规则 ========
+
+# 静态库 → lib/
+install(TARGETS DataRouter
+    EXPORT DataRouterTargets
+    ARCHIVE DESTINATION lib
+)
+
+# 共享库 → lib/（可选）
+if(TARGET DataRouter_shared)
+    install(TARGETS DataRouter_shared
+        EXPORT DataRouterTargets
+        ARCHIVE DESTINATION lib   # .lib (Windows import lib)
+        LIBRARY DESTINATION lib   # .so
+        RUNTIME DESTINATION lib   # .dll
+    )
+endif()
+
+# 示例 → bin/
+if(TARGET example)
+    install(TARGETS example RUNTIME DESTINATION bin)
+endif()
+
+# 头文件 → include/
+install(FILES datarouter.h DESTINATION include)
+
+# 文档 → share/
+install(FILES datarouter_config_template.h LICENSE DESTINATION share)
+if(EXISTS ${CMAKE_SOURCE_DIR}/README.md)
+    install(FILES README.md DESTINATION share)
+endif()
+
+# CMake 包配置文件 → cmake/
+set(INCLUDE_INSTALL_DIR include)
+set(LIB_INSTALL_DIR lib)
+
+include(CMakePackageConfigHelpers)
+configure_package_config_file(
+    cmake/DataRouterConfig.cmake.in
+    ${CMAKE_CURRENT_BINARY_DIR}/DataRouterConfig.cmake
+    INSTALL_DESTINATION cmake
+    PATH_VARS INCLUDE_INSTALL_DIR LIB_INSTALL_DIR
+)
+
+install(FILES ${CMAKE_CURRENT_BINARY_DIR}/DataRouterConfig.cmake DESTINATION cmake)
+install(EXPORT DataRouterTargets FILE DataRouterTargets.cmake DESTINATION cmake)