I installed the latest versions of Python and GCC/G++ in alternative locations. I am using SpaceVim. I think SpaceVim is using neomake as the default. I want to know how you can configure neomake to use the newest versions I installed in the alternative locations instead of the default version that was installed on linux. Also, I am trying to test c++17. Since c++17 is not the default, how would you be able to switch to that version with neomake?