Many times I can read about how people look at Gentoo and its nature of always compiling each packet at installation. Often it’s believed that Gentoo is faster because the compilation can optimize for the processor being used. That may be true, but that is not what characterizes Gentoo.
In my opinion it’s the use-flags.
The Gentoo use-flags
Gentoo use-flags are global tags with an on/off property. The probably most common flag is the “doc” flag that if set indicates that documentation should be installed with every package. Most flags usually control wheter or not to include some feature in a package, such as ipv6.
My opinion