BisonGNU flex versions that I have ported (They both work on AXP as well as on VAX)
To get the the full patched source, you have to fetch BISON-1_22-19961225.TAR-GZ or BISON-1_22-19961225.ZIP by anonymous FTP.
"Full patched source" means that you get a complete kit, that you only needs unpacking, then you only have to read the docs, configure, compile, build and install.
If you decide to fetch this source kit, read the section starting with "Please, if you want to help" below. You can't miss it.
You may want to read the reported bugs for this port of Bison 1.22 (there is often a quick fix in there to read).
Please, if you want to help, subscribe to the mailing list gnu-utils@lists.vms.gnu.ai.mit.edu, simply by sending the following line to gnu-utils-request@lists.vms.gnu.ai.mit.edu:
SUBSCRIBE
You will not be automagically added to the list. Instead, I will get a message, and will add you manually. I have set things up like this because I want to know who joins.