I am quit new around arm and gcc and didn't find a tutorial explaining the differences between arm-elf arm-eabi arm-none-eabi tool chains options. Is there someone who can teach me (us?) regarding this topic? If yes, could you add an explanation on how these different tool chain options interact with floating point behavior on arm family? (I am using an Arm966E, STR912 precisely, then without VFP). Many thanks in advance. Joel