mshort targets in gcc libs are required to build EmuTOS, and maybe FreeMiNT.
They may be required for other exotic software (games...) not using the MiNTLib and compiled with -mshort.
I've just noticed that -- gcc libs are ok then but why libm and libstdc++ ? Since we don't provide libc for -mshort for years, there's no real reason to have c++ and math libs, is it?