[Linux] altera_sopc_pll directories being created in users's home directory

I have the same problem @sandbender had almost three years ago: https://www.alteraforum.com/forum/showthread.php?t=46465

I've been having this issue with several Quartus versions (last tested in 16.1)

Is there any way to change this behavior? Maybe an environment variable or something...

Isn't /tmp good enough for these directories to be created at by default?