use configure_package_config_file()

CMakeLists.txt

@@ -112,10 +112,13 @@ if(NOT TARGET uninstall)
       COMMAND ${CMAKE_COMMAND} -P ${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake)
 endif()
 
-file(WRITE
-    ${CMAKE_BINARY_DIR}/${CMAKE_PROJECT_NAME}Config.cmake
-    "include(\${CMAKE_CURRENT_LIST_DIR}/${CMAKE_PROJECT_NAME}Targets.cmake)\n")
-
+include(CMakePackageConfigHelpers)
+set(TARGETS_EXPORT_NAME "${PROJECT_NAME}Targets")
+configure_package_config_file(
+  "Config.cmake.in"
+  "${CMAKE_BINARY_DIR}/${CMAKE_PROJECT_NAME}Config.cmake"
+  INSTALL_DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/${CMAKE_PROJECT_NAME}"
+)
 install(FILES
         ${CMAKE_BINARY_DIR}/${CMAKE_PROJECT_NAME}Config.cmake
         DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/${CMAKE_PROJECT_NAME})

Config.cmake.in

@@ -0,0 +1,4 @@
+@PACKAGE_INIT@
+
+include("${CMAKE_CURRENT_LIST_DIR}/@TARGETS_EXPORT_NAME@.cmake")
+check_required_components("@PROJECT_NAME@")