The curl command in Altera_Quartus_II_13.0sp1/Makefile currently just downloads a 0 byte file. Adding a -L flag to the command fixes it. I haven't checked the other versions of Quartus yet, but I'd assume they suffer from the same issue as the URLs look to be of the same format. If nobody gets to it before me I'll make a pull request with these changes.
The curl command in Altera_Quartus_II_13.0sp1/Makefile currently just downloads a 0 byte file. Adding a -L flag to the command fixes it. I haven't checked the other versions of Quartus yet, but I'd assume they suffer from the same issue as the URLs look to be of the same format. If nobody gets to it before me I'll make a pull request with these changes.