[jperry]

Z-Machines aren't compilers, they're virtual machines that can execute the compiled output.

There's no (known) compiler that still exists that can compile ZIL into Z-code.

edit: except for zilf, as mentioned, but it's not functional for even zork 1.

[david-given]

ZILF works just fine. There's even a competition for games written in ZIL using it:

https://www.facebook.com/groups/ZILcom/permalink/76701623374...

[taradinoc]

Not functional? Warnings aren't errors. Maybe it's just better at catching potential bugs...

[fsiefken]

judging from the blog comment it seems that it's functional