[steven114]

There's a good makefile floating around for specifically this purpose - it calls wine and mcc18 properly. There are a few things you have to do to make it work - I seem to remember that I had to link all of the binaries from (for example) mcc18.exe to mcc18 because the makefile assumes that there's no file extensions on executables and that you have to change a flag to indicate that you're using 18f8722 instead of the 18f8520. It's not very difficult once you get the makefile working - Eclipse can use it to build just fine.

Good luck!