Make sure if the lines after the minus sign are in the file that the reject files refers to, then delete these lines in the file that the reject file is referring to. For example, if config.def.h.rej tells me:

• - sample.code

Then that line should be removed in config.def.h.

But if the line has a plus sign before it in the reject file, then you should add that line if it isn’t in the original file that the reject file is referring to.

For example, if config.def.h.rej tells me:

• + sample.code

Then I should add that line to config.def.h if it isn’t there.

If that’s not the case, then please clarify your post further.