[gentoo-user] How to I keep the build log?

[Nikos Chantziaras]

This guide:

   https://wiki.gentoo.org/wiki/Gentoo_GitHub#Build_log

says:

"Due to the sheer amount of PRs that is coming our way on GitHub, and 
the limited number of developers looking after them, we cannot 
thoroughly test all PRs. Therefor, we kindly ask you to provide a link 
to a build log when a package is bumped or a new ebuild is introduced to 
the tree."

But it doesn't say how. The emerge man page doesn't say anything on 
keeping build logs. They are deleted and there's no option to tell 
emerge to not do that.