[CMake] Problems Building a Java Project Under Cygwin

[R0b0t1]

What fails is the compile step, like so:

javac: file not found:
\cygdrive\C\Users\R0b0t1\Documents\Code\project\build\CMakeFiles\project.dir\java_sources
(The system cannot find the path specified)

Is this due to a change in the path separator?

On another note, are there any suggestions for building Java projects?
Everything seems very confusing. I am not very smart.

Respectfully,
     R0b0t1.