Gold linker
The Gold linker is a newer and reportedly faster linker than the standard GNU ld linker. It is included in the binutils package.
To use the GOLD linker, simply
export LD=ld.gold
Alternatively, if your $PATH has /usr/local/bin before /usr/bin, you can do
ln -s /usr/bin/ld.gold /usr/local/bin/ld