I need to filter some psl output from blat, and I'd like to do it using the pslCDNAFilter that's provided as part of the Kent Source tree. Although the Kent Source typically behaves well after you set your environment variables appropriately, this little bit was not behaving well. So, I undertook a horrific hack job to get it to compile (this basically requires altering the makefile and physically placing some text into pslCDNAFilter.c):