-use-runtime is broken without -custom #6616
Original bug ID: 6616
ocamlc -use-runtime without -custom simply embeds the value as the path to the runtime interpreter at the beginning of the file. However, it doesn't prepend '#!', and as a result the executables can't be ran, at least not without directly invoking ocamlrun (which sort of defeats the point of using -use-runtime). It's possible to pass a path starting with #!, but this fails when Symtable tries to autodetect the primitive list. This can be worked around using -use-prims, but then Bytelink tries to absolutize a path starting with #! and breaks it.
This couldn't possibly ever work, and based on