diff --git a/CMakeLists.txt b/CMakeLists.txt
index d869b7f..dde5b5a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,11 +2,12 @@ cmake_minimum_required(VERSION 3.29)
 
 project(cplusplus-primer)
 
+include(ExternalProject)
+
 foreach(subproject example_1 example_2 example_3 example_4 library_1)
-    message(STATUS "Creating '${CMAKE_CURRENT_BINARY_DIR}/build_${subproject}'")
-    file(MAKE_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/build_${subproject})
-    add_custom_target(cplusplus-primer-${subproject} ALL
-        COMMAND ${CMAKE_COMMAND} -B ${CMAKE_CURRENT_BINARY_DIR}/build_${subproject} -S ${CMAKE_CURRENT_SOURCE_DIR}/${subproject}
-        COMMAND ${CMAKE_COMMAND} --build ${CMAKE_CURRENT_BINARY_DIR}/build_${subproject}
+    ExternalProject_Add(${subproject}
+        SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/${subproject}
+        STEP_TARGETS build
+        INSTALL_COMMAND ""
     )
 endforeach()