Flex Command Line compiler capablities [closed]

Question

Although the Flex command-line compiler (mxmlc) can compile MXML+ActionScript files into SWFs, I need specific insights into its capabilities, via the command-line switches.

• Configure which language you're writing in, ActionScript 2 / 3
• Configure which Flash Player version you're targetting, 7 / 8 / 9 / 10
• Configure what frames of the movie, contain what ActionScript code.

An article covering Mxmlc, an intro to the Flex SDK.

Answer 1

$> mxmlc --help target-player

-target-player <version>
    specifies the version of the player the application is targeting.
    Features requiring a later version will not be compiled into the
    application. The minimum value supported is "9.0.0".

You can't define the language afaik - mxmlc version 3 is an actionscript 3 compiler only. There may be some backwards compatibility, but it's not a combined AS2 and 3 compiler.

I'm not even sure what your third point actually means, or in fact what you're asking overall.

Answer 2

Though not a direct answer to your question, it's interesting to note that the following arguments to MXMLC will allow you to write AS1-style code:

-strict=false -as3=false -es=true

With those arguments, you'll be able to extend via prototype again and the compiler won't use strict mode. It's a fun way to "extend" the language and play with the JS-like capabilities not normally used with AS3.