Ok, I did a multi-algo version myself, source available from
HERE.This is based on badman74's latest version, so includes Lyra2E, Pluck and WhirlpoolX algos.
Don't ask for windows builds, sorry.
Are you sure this is based on latest badman74's version from here:
https://github.com/badman74/sgminer? Because I've noticed two issues: "--difficulty-multiplier 2" issue is not resolved in your source (but is in badman74's git version) and Lyra2RE algo only works with "Lyra2RE" algorithm acronym, but not with "lyra2re".