从官方网站下载最新版本的C ++ boost后，我以root权限运行：
./bootstrap.sh --prefix=/usr/local和下一个./b2 --prefix=/usr/local（根据教程）。但是当它建成时，我看到了这个消息：
The Boost C++ Libraries were successfully built!
The following directory should be added to compiler include paths:
/home/username/Downloads/boost_1_65_0
The following directory should be added to linker library paths:
/home/username/Downloads/boost_1_65_0/stage/lib
，因此库和头文件已安装到当前目录中，并且前缀被忽略。不带前缀运行（/ usr / local是默认值）会导致相同的结果。我做错了什么？