Error: Invalid SWF version X

[peteshand]

Following on from this issue: #3628
How I can run a project with set to anything higher than 17?
AIR is currently at 21, so I was expecting if I used the GIT version of Haxe 21 would supported... is this possible? or is there another way to manually set the AIR/Flex sdk? It would really handy if this could be set externally.

[nadako]

It looks like version support has to be added to haxe itself: https://github.com/HaxeFoundation/haxe/blob/development/src/typing/common.ml#L892

I'm not sure if this can be avoided or not, but I think latest haxe should support current flash runtime versions, so I'm assigning this to @ncannasse and setting 3.3 tag.

[Justinfront]

Note that if can modify a header using format library if you want a quick work round, and use dynamic to hack round access of new features.
https://github.com/HaxeFoundation/format/blob/master/tests/swf/Test.hx#L27
https://github.com/HaxeFoundation/format/blob/master/format/swf/Data.hx#L69
But perhaps you will need to do this in Ocaml because of
https://github.com/HaxeFoundation/haxe/blob/development/extra/extract.hxml
But just mentioning the format header rewrite option as it might be something Pete can do without trying to rebuild Haxe compiler and swf related Submodules, prior to formal update.

[peteshand]

Could we change it to something like

pseudo code:
if (swf-version >= 12.0) return cast(swf-version, Int) + 11;

This way it wouldn't need to be used every AIR update