Will the Nios™ software development kit work with a version of Cygwin software other than the version that ships with the kit?

Description No, you must install the version of Cygwin that comes with the Nios software development kit. For the Nios embedded processor version 2.0 and higher, you may install the Nios software development kit in any location. For versions of the Nios embedded processor lower than version 2.0, Cygwin must be installed on your C: or D: drive to ensure proper interaction with the other software development kit components. If you want to keep the older version of Cygwin tools for use without the Nios software development kit, rename the directory to something other than C:/Cygwin or D:/cygwin.