Why are my units “compiled with a different version” of my own files?

Question

I\'m building a program that uses plugins. Unfortunately, the plugin framework\'s dynamic linking forces the RTL and VCL out of my project EXE and into the BPL versions, an

Answer 1

The error "unit is compiled with a different version of..." is an annoying one. It occurs in a situation like below:

     +--------+
     | unit A |
     +--------+
      |      |
      |      |
      V      |
  +--------+ |
  | unit B | |
  +--------+ |
      |      |
      |      |
      V      V
     +--------+
     | unit C |
     +--------+

Both unit A and B use unit C and unit B uses C. Unit B and C are compiled and for some reason the source of unit B is not available. Now Unit C is changed (any change will do and is recompiled) And the dcu of unit C differs from the unit C used by unit B, so unit B needs to be recompiled too. But unfortunately, the source is not available so the compiler gives up.

It is not entirely clear what's wrong with your situation.

You have a test framework that links to the plugins. So where do unit X and Y fit in and do you recognize the pattern shown above?

But the fact that a complete build solves the problem is hint in this direction. And this is not the first time I saw problems with partial recompiles. So I always use the complete version.