I am currently working with 'inherited' code that has (scattered randomly throughout) a whole bunch of conditional compiler directives based on the version of Delphi, going back to Delphi 2 . From now on, all development will be with Delphi 2009 or future. Is there a tool in Delphi 2009 , or a plugin, that will automatically remove compiler conditional code segments based on a specified 'minimum' version?
I highly recommend the Delphi Inspiration Pascal Preprocessor (DIPP)
This can do a number of things with a source file in addition to removing conditional defines, including the "inlining" of include files and removing comments (all of course highly configurable and controllable by options supplied to the processor).
The conditional defines functionality is especially useful as you can either have all such conditionals simply removed or provide a set of DEFINE's that you wish to apply. DIPP will then emit a source file that reflects how it would appear to the compiler with those symbols DEFINED, but without the conditional directives themselves.
So in your case you would simply defined the symbols appropriate to your "baseline" Delphi version.