Looking through the code, I see some awfully long function names. Does anyone recall if there are/were limits on the size of variable and function names? Could that cause this error? > On Aug 5, 2020, at 9:30 PM, Adam Thornton wrote: > >  > I finally munged lbforth.c (https://gist.github.com/lbruder/10007431) into compiling cleanly on mostly-stock v7 with the system compiler (lbforth itself does fine on 211BSD, but it needs a little help to build in a real K&R environment). > > Which would be nice, except that when it gets to the linker.... > > $ cc -o 4th forth.c > ld:forth.o: Local symbol botch > > WTF? > > How do I begin to debug this? > > Adam