Description
To find all versions of cygwin installed do the following from the "Nios® II Command Shell":
[SOPC Builder]$ cygcheck -s -v -r > cygcheck.out
[SOPC Builder]$ grep cygwin1.dll cygcheck.out
This will display all paths that have any reference to cygwin1.dll and will show the versions of cygwin1.dll installed on the machine.