scons: add --gold-linker to link with the gold linker

This option can significantly speedup link time on Linux systems, which is
the main bottleneck to rebuild after small changes.

Change-Id: I3b0bdd61f7dcef0d73629c8ee2ee98091953fec3
Reviewed-on: https://gem5-review.googlesource.com/c/14075
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
Maintainer: Gabe Black <gabeblack@google.com>
1 file changed