cmake编译有错误啊！
CMake Error at cmake/boost.cmake:100 (MESSAGE):
You can download it with -DDOWNLOAD_BOOST=1 -DWITH_BOOST=<directory>
This CMake script will look for boost in <directory>. If it is not there,
it will download and unpack it (in that directory) for you.
If you are inside a firewall, you may need to use an https proxy:
export https_proxy=http://example.com:80
Call Stack (most recent call first):
cmake/boost.cmake:288 (COULD_NOT_FIND_BOOST)
CMakeLists.txt:671 (INCLUDE)
