Can I legally build mxmlc.jar from source?

Hi all,

first post here. Was just wondering if I am allowed to build the mxmlc compiler from source?

I have checked out

http://opensource.adobe.com/svn/opensource/flex/sdk/trunk/

and notice that some packages are missing

macromedia.*

flash.fonts.*

I presume that these files are on the border of the open source license and if so, am I legally allowed to compile the mxmlc compiler from source?

How should I go about getting the jars/source code for these packes and any other missing ones?

Any help would be gratefully accepted

Thanks

Conrad Winchester