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  • What are the compile option differences between --specs=nosys.specs and --specs=rdimon.specs in arm-none-eabi-gcc?

    1.

    As title. 

    and what time I need to add options  ?

    I know add --specs=nano.specs thas is mean using newlib-nano when I use arm-none-eabi-gcc.

    In readme, rdimon is for semihosting. Nosys is for retarget.

    We use bare metal system and printf retarget to AXI…