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?

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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.