Identical build on different systems

Question

I have 3 build machines. One running on windows 2000, one with XP SP3 and one with 64bit Windows Server 2008. And I have a native C++ project to build (I\'m building with vi

Answer 1

Is Windows Server 2008 the only machine running 64 bit? If it is, that could be your problem.

Answer 2

Do you run the same version of the chain tool (compiler, linker, ...), included 32/64 bits difference?

Answer 3

You might think that compiling is purely deterministic (identical inputs give identical output, every time) but this need not be the case. For example, consider the optimiser - this is going to need some memory to work in, probably more for higher optimisation methods. If on one machine a memory allocation fails (because the machine has less memory) then the compiler could omit that specific optimisation, resulting in different code being emitted.

There are a lot of similar situations, so you may be putting a lot of effort into something that is not doable. Why do you need the DLLs to be bitwise identical, anyway?