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From Raju Bitter <r.bitter.mailingli...@googlemail.com>
Subject Re: Apache Flex 4.8, playerglobal.swc versions, FP 11.x adoption, FP versions & security
Date Thu, 24 May 2012 15:43:52 GMT
1) -target-player option
On Thu, May 24, 2012 at 3:58 PM, Carol Frampton <cframpto@adobe.com> wrote:
> I just learned this tidbit that relates to this thread.  -target-player is
> parsed and is used to replace the tokens
>
> {targetPlayerMajorVersion} and {targetPlayerMinorVersion} that appear in
> any of the config files specified for mxmlc.
>

That makes sense, Carol. I did some testing with a very simple AS3 app:
package {
  import flash.display.Sprite;
  public class SampleApp extends Sprite{
    public function SampleApp(){
    }
  }
}

If compile that application using this command
    mxmlc SampleApp.as -static-link-runtime-shared-libraries

everything works as expected. Using the option "-target-player 12"
    mxmlc SampleApp.as -target-player 12 -static-link-runtime-shared-libraries

I get the following error: Error: unable to open
'libs/player/12.1/playerglobal.swc'

As you said, the value of the -target-player option is used when
constructing the path to the playerglobal.swc.

2) -swf-version option
Now I tested the -swf-version option. That's interesting, since I can
use any random number, e.g. 99. What the compiler does is write that
number into the SWF file, as I confirmed using the swfdump tool:
    mxmlc SampleApp.as -swf-version 99 -static-link-runtime-shared-libraries

Resulting output with swfdump for the generated SWF file:
    raju@titan:~/test$ swfdump SampleApp.swf | more
    <!-- Parsing swf file:/home/raju/test/SampleApp.swf -->
    <!-- ?xml version="1.0" encoding="UTF-8"? -->
    <swf xmlns='http://macromedia/2003/swfx' version='99'
framerate='24' size='10000x7500' compressed='true' >

As you can see, that values get's written into the version attribute
for the swf tag. In binary format, that's the 4th byte in the SWF
file:

First 4 bytes of the SWF without the -swf-version option, with Flex SDK 4.6
    43 57 53 0E

First 4 bytes of the SWF witht the option "-swf-version 99"
    43 57 53 63

But other sections of the files differ as well, so I'm not sure what
else the -swf-version option does during compilation.

Thanks,
Raju

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