6.1.3 Custom defines documentation

since Haxe 4.3.0

As noted in conditional compilation, custom defines can always be added on the command line with -D .... However, to provide better completion in the IDE, and to provide documentation for a Haxe user, defines can be registered with the compiler in initialization macros using the methods:

The compiler argument --help-user-defines displays a list of registered defines.

haxe --lib somelibrary --lib another --help-user-defines