Cant compile mod

[kota.leshik]

I dont know, where i can have a support, and now im writing this. Im now trying to compile one mod from 1.7.10 to 1.8.9 and i fulfilled all instructions to update, but more packages are absent. Its:
 package net.minecraftforge.common.event
 net.minecraftforge.common.Mod.EventHandler;

 net.minecraftforge.common.Mod;

net.minecraftforge.common.network.NetworkRegistry;

and more. Can you help me, please? I have not found ask on my question in google(

[kota.leshik]

13 hours ago, diesieben07 said:

You can't just compile a mod in a different version. The mod has to be updated for the new version. Especially the 1.7.10 to 1.8.x upgrade takes significant changes.

Thanks. Can you give me some manuals about that? Or can you help me  little bit? I will be very grateful)