I've compiled sgminer 5.1.1-3-gc50e3 from Badman74 git source.  When I try to run it for Lyra2RE, I'm getting:

[10:52:08] Unable to open lyra2re.cl for reading!

I checked that my kernel path is correct and there are the files Lyra2.cl and Lyra2RE.cl.  So, i renamed Lyra2.cl and Lyra2RE.cl to lyra2.cl and lyra2re.cl respectively.  Seems to be working now.  Just giving a heads up.