[CMake] External_Project_Add() and custom build configurations ?

[Glenn Coombs]

On 7 July 2011 15:15, David Cole <david.cole at kitware.com> wrote:

>
> I'm sure that what you want to do is possible. I'm also sure that it's a
> huge effort to get it to work with all CMake generators. It will also be
> difficult to write a good test of the functionality.
>
> Furthermore, I view it as largely unnecessary work...
>
> ...because a full file-system-level clean of deleting the entire build
> tree, followed by a quick configure with CMake of the top level project,
> followed by a regular build has largely the same net result with negligible
> difference in total build time. If the difference in total build time is
> non-negligible, and really annoying to somebody, then this huge effort may
> well be worth it to them, at that point in time.
>
> Right now, I'm not convinced the extra effort and extra complications in
> the code are worthwhile additions to CMake.
>

I understand where you're coming from on the resources front.  There would
obviously be some effort required to get this to work properly.  I'm not
convinced it is such a huge amount of work as you're suggesting, but then I
don't know the source code as well as you do :-)