fix file cmake

CMakeLists.txt

@@ -4,4 +4,30 @@ project(data_convert)
 set(CMAKE_CXX_STANDARD 17)
 
 add_library(data_convert INTERFACE)
-target_include_directories(data_convert INTERFACE ${CMAKE_CURRENT_SOURCE_DIR}/include)
+
+target_include_directories(data_convert
+    INTERFACE
+        $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+        $<INSTALL_INTERFACE:include>
+)
+
+# --- Cài đặt thư viện vào hệ thống khi chạy make install ---
+install(TARGETS data_convert
+  EXPORT data_convert-targets
+  ARCHIVE DESTINATION lib      # Thư viện tĩnh .a
+  LIBRARY DESTINATION lib      # Thư viện động .so
+  RUNTIME DESTINATION bin      # File thực thi (nếu có)
+  INCLUDES DESTINATION include # Cài đặt include
+)
+
+# --- Xuất export set data_convert-targets thành file CMake module ---
+# --- Tạo file lib/cmake/data_convert/data_convert-targets.cmake ---
+# --- File này chứa cấu hình giúp project khác có thể dùng ---
+# --- Find_package(data_convert REQUIRED) ---
+# --- Target_link_libraries(my_app PRIVATE data_convert::data_convert) ---
+install(EXPORT data_convert-targets 
+  FILE data_convert-targets.cmake
+  NAMESPACE data_convert::
+  DESTINATION lib/cmake/data_convert
+)
+