Your toolchain is broken. Or rather, as I would guess, working but made for something entirely different. "arm-none-eabi" looks like a barebone toolchain, typically used for programming for microcontroller platforms and the like. You should use a toolchain targetting a glibc/Linux based system.
But compiling this yourself might become a bit of a hassle anyway, since GNU screen has some more dependencies. My suggestions are: * use something ready-made (debian, optware), or * have a look at tmux (less dependencies, similar functionality regarding multiplexing)
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