first you need to install amdgpupro driver (16.40 or most recent 17.4.?)
go to google drive in first post, download tar.gz file (default to downloads)
drag the file to home folder, double click on it, it will ask "extract" yes to home folder (by default since archive is now in home folder)
in terminal:
export GPU_FORCE_64BIT_PTR=0
export GPU_MAX_HEAP_SIZE=100
export GPU_USE_SYNC_OBJECTS=1
export GPU_MAX_ALLOC_PERCENT=100
export GPU_SINGLE_ALLOC_PERCENT=100
then right click on Claymore's folder in home directory and from the pull down menu choose "Open in terminal"
then use command strings from ethermine.org and add whatever you want from the OP's first post in this thread
just make sure that command is formatted properly (./whatever)
use -mode 1 just for ethereum
use -etha 2 for amdgpu pro drivers