How to determine Ubuntu version in code?

Question

C++ / C#

There is code for libv8-dev that works on ubuntu 18. But on 19.10 it no longer works because the version of the libv8-dev library is different on it. Therefore, I had to rewrite the code for a new one. But since you need to do something that would work on both versions, I think that it's easy to write in one file for both versions. And separate the code with the #ifdef switch. I just can’t find anywhere by what define to do code switching depending on the version of Ubuntu.

Answer 1

The standard solution is to use autoconf
It is able to determine the libraries in the system and assign the necessary defines
https://www.gnu.org/software/autoconf/manual/