Asking for a CMake feature

[Albert Astals Cid]

unsermake had a nice feature that when doing
make install
did only really install what had changed, that is quite important, because 
imagine you fix one header in kdelibs and do make install, ALL headers are 
installed and automatically all your programs want to start rebuilding 
because they think the header changed. 

If only the changed header is installed things rebuild much less and my 
productivity increases.

So, please please please, can CMake devels make this happen?

Albert

P.D: This is all AFAIK, i've never been a buildsystem guru (well i'm really 
never been any sort of guru) so i can be wrong ;-)

		
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