ng aria-hidden="true">4.2.5.</strong> Introduction to Third-Party Development Environments</a></li></ol></li><li class="chapter-item expanded "><a href="../../chapter_4/4.3/index.html"><strong aria-hidden="true">4.3.</strong> ESP-IDF Compilation System</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../../chapter_4/4.3/4.3.1.html"><strong aria-hidden="true">4.3.1.</strong> Basic Concepts of Compilation System</a></li><li class="chapter-item expanded "><a href="../../chapter_4/4.3