Hi. May I know how exactly to compile simulator_gazebo from source?

My understanding is as followed:

1. Check out the source code from the source using "svn co"

2.Rosmake the pkg

However, I do not know which part of the source to check out. I checked out https://code.ros.org/svn/ros-pkg/stacks/simulator_gazebo", it took a long while and give me all the different versions of simulator_gazebo.

So should i checkout "trunk" instead? Followed by "rosmake simulator_gazebo" or "rosmake trunk"?

In addition, can I just check out the source code to a workplace that is in the ROSPACKAGEPATH? Or do it need to be in the original simulator_gazebo file?