Best practices with SVN for files that always "change" with no change

We have a project that references files in a Common-directory. Whenever that project is opened or compiled, these files are copied. Because the timestamp changes, Subversion sees that as changes. I only want to commit new changes of the general Common-directory, or act开发者_运维知识库ual changes in the project. Not the auto-copies that the compiler performs for me.

How do I keep the directory and the files in SVN, but prevent these non-changes to be seen as changes? Is there some "best practice" or "preferred" way of dealing with such situations?

---

Typically, you don't want to put compiler-generated anything into your repository. Use svn:ignore to ignore these things.

---

I would think a simple svn:ignore on the common directory would do. The files that don't really change should be checked in to a separate project. You would have to tell your developers that they will have to checkout the two project but only check in the project with the files that really change.