How to install boost-jam (bjam) in Gentoo Linux

Howto install boost-jam (bjam) in Gentoo Linux

dev-util/boost-jam is no longer an ebuild
 * To install boost-jam
 * 1) edit: make.conf
 * 2) add bjam to the USE="" variable
 * 3) *USE="bjam"
 * 4) then compile boost
 * 5) *execute: emerge boost

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