Many (most?) CL implementation compile to native code, so you "just" need to have the boot part not to use any part of the runtime. You will have to use lower l

Many (most?) CL implementation compile to native code, so you "just" need to have the boot part not to use any part of the runtime. You will have to use lower level functionality; I don't know if there is anything in the standard, but many implementation do offer them