[MESOS-3161] Document using the gold linker for faster development on linux.

• Type: Improvement
• Status: Accepted
• Priority: Major
• Resolution: Unresolved
• Component/s: build, documentation
• Labels: newbie
• Story Points: 3
• Assignee: Unassigned
• Reporter: Benjamin Mahler
• Created: 28/Jul/15 01:10
• Updated: 29/Apr/19 09:27

Description

The gold linker seems to provide a decent speedup (about ~20%) on a parallel build. From a quick test:

timings for make check -j24 GTEST_FILTER="" w/ 24 hyperthreaded cores

gold:

real	7m18.526s
user	81m21.213s
sys	5m17.224s

default ld:

real	9m7.908s
user	85m13.466s
sys	5m52.199s

On CentOS 5 w/ devtoolset-2:

sudo /usr/sbin/alternatives --altdir /opt/rh/devtoolset-2/root/etc/alternatives --admindir /opt/rh/devtoolset-2/root/var/lib/alternatives --set ld /opt/rh/devtoolset-2/root/usr/bin/ld.gold

On Ubuntu:

sudo update-alternatives --install /usr/bin/ld ld /usr/bin/gold 1

Ideally we could this out on the website, with instructions for each OS.