[CMake] Using Relative Paths!

[Brad King]

Jan Palach wrote:
> How use relative paths on cmake?

Short answer: you can't.

Long answer: Several attempts have been made to implement generation of 
build systems with relative paths instead of full paths.  It is 
extremely tricky when people use symlinks in the path to their source or 
build directories and does not work at all with network paths on windows 
(because the current working directory cannot be a network path in the 
windows shell used by the build system).

CMake is meant to take CMakeLists.txt files distributed in the source of 
a project and generate a native build system on each user's machine. 
The generated build system is not meant to be distributed.  In this use 
case there is no need for relative paths.

-Brad