I have the same problem with NIOS 6.1
Altera can't find the files:
C:/altera/61/nios2eds/components/altera_hal/build/app_rules.mk:153: /components/altera_hal/build/gnu_rules.mk: No such file or directory
C:/altera/61/nios2eds/components/altera_hal/build/app_rules.mk:157: /components/altera_hal/build/gtf_rules.mk: No such file or directory
make: *** No rule to make target `/components/altera_hal/build/gtf_rules.mk'. Stop.
Build completed in 1.139 seconds
when they are clearly there.
I tried the mount command in DOS and it replies "Device or resource busy"
I had other later versions of Quartus and Nios on this computer and that could have caused this problem. Have since uninstalled them. I did a repair re-install of quartus and a complete re-install of NIOS IDE but that didn't help.
Any suggestions?
thanks