Is there a way to exclude some modules from a big reactor build, similar to -pl ?
Here are a number of ways to do it persistently:
How to exclude a module fr
I don't believe this is currently possible from the command line. There is an open feature request in maven3 for this very thing (http://jira.codehaus.org/browse/MNG-5230).
Looks like your only option at this point is to modify the pom and create a new build profile that includes only the modules you want to build.