====== Using AIR with ASC 1 ======

<note warning>
It's highly recommended to use the latest ASC 2 compiler. This section is provided just for reference, e.g. if you're stuck with Flash Builder 4.6.
</note>

The ASC 1 compiler is available as a component from the open source Flex SDK. To compile a Starling application for Desktop, you need the Flex SDK; to target mobile or standalone desktop apps, you need the AIR SDK, as well.

You need at least Flex 4.6 and AIR 3.4. Get the latest version of those SDKs here.

  * [[http://www.adobe.com/devnet/flex/flex-sdk-download.html|Download latest Flex SDK]]
  * [[http://www.adobe.com/devnet/air/air-sdk-download.html|Download latest AIR SDK]]

<note>
When merging the AIR SDK with the Flex SDK, do not download the "AIR SDK & Compiler". Look for the download links in the section further down the page that starts with the following text, "Note: Flex users will need to download the original AIR SDK without the new compiler."
</note>

== Merge Flex and AIR SDKs ==

To install and use a new AIR SDK with ASC 1, you need to overlay it on an existing Flex SDK. This is a bit more tricky on a Mac than on Windows, because OS X does not merge folders by default.

  - Duplicate the folder containing your current Flex SDK.\\ (In Flash Builder 4.6, that folder is "sdks/4.6.0")
  - Now merge the new AIR SDK into that folder.
    * On **Windows**, simply move the contents of the AIR SDK folder into the Flex SDK folder.
    * On **OS X**, use the ''ditto'' command on the terminal to merge folders:\\ ''ditto <src-dir> <dest-dir>'' (this will merge a copy of ''src-dir'' into ''dest-dir'')
  - Update your IDE's settings so that it uses this SDK when building a project.

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