[CMake] Unrealistic percent numbers(Ubuntu cmake 2.6-patch0)

[Pavel Shevaev]

Hi, CMakers :)

I'm experiencing very weird percent numbers during the build
procedure, something like this:

[ 20%] Built target foo
[ 50%] Built target bar
[150%] Built target baz
[170%] Built target wow
...
[1000%] Built target hey

What can be causing this strange behaviour? Improperly written CMakeLists.txt?

-- 
Best regards, Pavel