I would advice using StaticCompiler.jl by TimHoly -- PackageCompiler seems to work better, but sysimages are a lot less relocatable and pretty much only useful on that machine. Static compiler is a bit more relocatable, but sacrifices some stability and definitely isn't always going to work.

There is also wrapping your Julia in C to create the executable -- creating an executable is also a lot easier now with PackageCompiler, if this is the article I think it is I had to write some C to do it -- now it is a lot easier just a single function call :)