If you have GCC>5 version, you'll see this error when the linking src:
Open MAKEFILE(game/db/libpoly) and add this command to CFLAGS;
If you see:
I didn't say this shit update for performance or use c++2a. %90 using old compilers, this topic for this. You don't need to use c++2a, use c++17.
And about boost libraries, i said:
You don't need to update boost!