I have tried searching but there seem to be no simple guide or simple answer, I received a bash script from another thread that uses compc but after hours trying to get it to work I gave up.

#!/bin/sh
rm Client/libs/starling.swc
compc -source-path ~/dev/Starling-Framework/starling/src -include-sources ~/dev/Starling-Framework/starling/src/starling/animation ~/dev/Starling-Framework/starling/src/starling/core ~/dev/Starling-Framework/starling/src/starling/display ~/dev/Starling-Framework/starling/src/starling/errors ~/dev/Starling-Framework/starling/src/starling/events ~/dev/Starling-Framework/starling/src/starling/geom ~/dev/Starling-Framework/starling/src/starling/filters ~/dev/Starling-Framework/starling/src/starling/text ~/dev/Starling-Framework/starling/src/starling/textures ~/dev/Starling-Framework/starling/src/starling/utils ~/starling/starling/src/starling/rendering ~/dev/Starling-Framework/starling/src/com/adobe/utils -optimize -output ~/dev/Starling-Framework/starling/lib/starling.swc
cp ~/dev/Starling-Framework/starling/lib/starling.swc Client/libs/starling.swc

And the Maven compiler guide seem to be oooold and doesn't work at all.
http://wiki.starling-framework.org/tutorials/how_to_compile_starling_with_maven

When I try to use Ant I get this error message:

Buildfile: /Users/stefansvebeck/dev/Starling-Framework/starling/build/ant/build.xml
     [echo] Using SDK: /Users/stefansvebeck/Documents/airsdk

build-swc:
     [echo] Building starling.swc
     [java] Loading configuration: /Users/stefansvebeck/Documents/airsdk/frameworks/flex-config.xml
     [java]
     [java] /Users/stefansvebeck/Documents/airsdk/frameworks/flex-config.xml:47
     [java] Error: unable to open '/Users/stefansvebeck/Documents/airsdk/frameworks/libs/player/11.1/playerglobal.swc'.
     [java] /Users/stefansvebeck/Documents/airsdk/frameworks/flex-config.xml (line: 47)
     [java] </external-library-path>
     [java]
     [java] 

BUILD FAILED
/Users/stefansvebeck/dev/Starling-Framework/starling/build/ant/build.xml:42: Java returned: 4

So I'm at a loss of what todo here.