build: add flag to LLD to fix gcc 8 build (#1013)

* build: add flag to LLD to fix gcc 8 build
* build: add -Wno-unknown-warning-option to work around older gcc
3625df25d6Andrew Kelley committed on 5/15/2018, 8:21:47 PM· committed by GitHubparent74b10c0
1 file changedLine totals unavailable