Macro inside macro

Builder.hx

#if macro
import haxe.macro.Expr;
import haxe.macro.Context;
import haxe.macro.Type;
#end

#if !macro
@:autoBuild(BuilderBuilder.build())
#end
interface Builder { }

class BuilderBuilder {
	
	macro static public function build():Array<Field> {
		var fields = Context.getBuildFields();
		fields.push( { name: 'm', pos: Context.currentPos(), access: [AStatic, AMacro], kind: FFun( { args:[ { name:'e', type: macro:Array<haxe.macro.Expr> } ], ret:macro:haxe.macro.Expr, expr: macro { trace(e); return macro null; }} ) } );
		return fields;
	}

}

error.txt

src/Main.hx:13: characters 2-8 : Class<Main> has no field m
src/Main.hx:13: characters 2-13 : Method m not found on class Main

Main.hx

class Main implements Builder {
	
	static function main() {
		Main.m(123);
	}
	
}