[Monetdb-developers] Problem editing the .mx files.

Hello. I need to pipe data into a monetdb database (something along the lines of 'myprocess | MapiClient -s "COPY ...."'. It doesn't seem to be possible out-of-the-box, so I wanted to poke around in the code to find out why and how to fix it (if needed), and hopefully submit a patch. I've been having a problem with that (playing with the code). I don't know how to 'compile' the modified .mx files in the sql module. I have both bison and flex installed, but the makefile uses the commands 'x' and 'l' to process the .mx, and I don't have any idea of what x and l are. So, in a nutshell, my question is: "How do I recompile the sql module after I modify the .mx files? What are 'x' and 'l'?" Regards, Zarrabeitia.