Delphi 5 is required by app for custom plugins -- are newer Delphi versions backward compatible?

The plugin API documentation for an app I use requires Delphi 5 for plugin development, but I'm having a开发者_StackOverflow社区 difficult time locating a copy of Delphi 5 or docs for it. Are any later versions of Delphi able to create BPL files identical to those produced by Delphi 5?

Are any later versions of Delphi able to create BPL files identical to those produced by Delphi 5?

No, binary compatibility between versions is a weak point of Delphi. You really need D5, or a newer version of that app.