well google isnt cooperative today, or i dont have the right keywords...but i did find one link i was thinking of --->
from here...but yeah this is pretty sensible anyway, to form the bricks in place, and then keep moving the forms, a lot like slipstraw (LSC) or slipform stone.
you can make your forms so that there's a space between them for a layer of mortar in between each block, or do it with with sections of your bricks with no mortar in between (so infill, or load bearing with mortar). if you form them in place you can also make them really big.
and youve probably looked into soil crete of some kind, but a simple way to do soil crete on floors...is to get the dirt/subfloor or whatevers prepared....
once its prepared and level ish...throw around a lot of dry sand and cement right on the floor...then go through with a small tiller or other earth mixer gadget...doesnt need to be a jackhammer, but just a small tiller to mix up the dry ingredients you threw around with your local subsoil/subfloor materials. then moisten it as you go and tamp it down/smooth it at the end.