goAhead支持多线程编译选择吗？

网址：https://embedthis.com/goahead/specs.html

提到了开发者支持多线程：
Developer Support

HTTP server libraries
Shared and static library build options
Operate single-threaded or multithreaded (Compile or run-time selectable)
Easy, intuitive programming model
Extensive C API
Extensive debug trace logging

请问具体要如何编译支持？goAhead源码找了很久没找到相关宏定义，请大神们帮帮忙。

eloper Support
HTTP server libraries
Shared and static library build options
Operate single-threaded or multithreaded (Compile or run-time selectable)
Easy, intuitive programming model
Extensive C API
Extensive debug trace logging
请问具体要如何编译支持？goAhead源