ComplexLab with Eclipse
From TUDOS-Wiki
If you want to use Eclipse to work on the [ComplexLab], you need to tell Eclipse where the include files are located and provide them in the correct order.
To simplify that task, you can import this project-settings using File -> Import -> C/C++ Project Settings. Afterwards you need to rebuild the index at <Your project> -> Index -> Rebuild. Note that this settings are specific for the ComplexLab and the x86 architecture.