125e4b54c1
This requires -nostartfiles to be only passed to the linker, not the compiler, as it is a linker flag and passing it to the compiler causes a clang warning to be emitted. Additionally, clang does not seem to support `-mcmodel=medlow` and `-msmall-data-limit=8` but these options do not seem strictly necessary to me anyhow thus they are deactivated conditionally when using clang.