ubuntu20.04

[xiaokaibala]

Ubuntu20.04下编译不过呀

[martinWANG2014]

1. Add #include<boost/thread.hpp> into file hesaiLidarSDK_IN.h
2. Modify CMakeLists.txt in Pandar40_SDK folder from C++11 to C++ 14 at line 18 and 19:
   set (CMAKE_CXX_FLAGS "-fPIC -std=c++11")
   set (CMAKE_CXX_STANDARD 11)
   to
   set (CMAKE_CXX_FLAGS "-fPIC -std=c++14")
   set (CMAKE_CXX_STANDARD 14)
3. Modify also CMakeLists.txt in Pandar40_ROS folder from C++11 to C++ 14 at line 5:
   add_compile_options(-std=c++11)
   to
   add_compile_options(-std=c++14)
   With these modifications, I compile it successfully.