which version of lld you have installed. when i run your command i get following error
""Couldn't find any package whose name is "lld", but there are 74 packages which contain "lld" in their name:
(too many to show, the limit is 40)
Unable to apply some actions, aborting""
I installed lld (1:7.0-47) but i think something is wrong as ./build.sh command show following error
""clang: error: invalid linker name in argument '-fuse-ld=lld'
ninja: build stopped: subcommand failed.""