[CMake] cmake with continuous integration

[Matt Fair]

I am using CMake with a continuous integration (CI)  build and it has
multiple stages.  The CI server places in each stage in different
directories, for example:

/foo/bar/build-stage
/foo/bar/test-stage
/foo/bar/package-stage

I'm having trouble with CMake with the abolute paths in the build
tree, is there any way around this?  From what I have seen the answer
is no, but I was wondering what other people are doing.  Are people
just doing a build and package in the same stage, then redistributing
the packages to the rest of the stages?

Thanks,
Matt