[Cmake] Output directory for build

[Brad King]

On 23 Sep 2003, Andy Cedilnik wrote:
> So, consider out of source build.
>
> For example:
>
> project/
> project/subproject1
> project/subproject2
> project-gcc-3.2.2-i386/...
> project-gcc-2.95-i386/...
>
> Now you run CMake in each of the project-* directories.

Note also that the same source tree can be shared among all these build
trees, so you don't need to commit changes to CVS before building with
different compilers.  Just make sure the source tree is clean, having no
in-source builds present.

-Brad