[CMake] include_directories and relative paths

[gekso]

Hello! I use INCLUDE_DIRECTORIES with relative-style paths, like
..\include or $(Var)\include.
After configuration I receive project with absolute-style includes,
like C:\aaa\..\include or C:\aaa\$(Var)\include..
Can I remove this prefix(I suppose it's CMAKE_CURRENT_SOURCE_DIR)
somehow? I need to generate project file and then to move in on
another computer, but it will not work with such full paths. Version
2.8.4