all FB versions built with Equation's toolchains are faulty at interpreting the command line
I just noticed this today while trying to build FBfrog, cd into the src folder and then do fbc *.bas -m fbfrog
you will probably get something like *.bas() error 23: File not found, *.bas
I have removed all the faulty versions from GitHub
the bad versions are gcc 7.4, 8.3, 9.2, 10 and 11