Install

https://github.com/openfl/openfl/wiki/Get-Started

Development Build

haxelib install format
haxelib install swf
haxelib install svg
git clone https://github.com/openfl/openfl-tools
haxelib dev openfl-tools openfl-tools

To rebuild the tools, use:

openfl rebuild tools

To return to a release build:

haxelib dev openfl-tools