eclipse config 3rd party libraries - Serbipunk/notes GitHub Wiki

https://stackoverflow.com/questions/52010555/configure-eclipse-for-c-with-eigen-library

I wonder if you have a resolution no longer. But I have resolved this problem with the following steps.
1. proj prop -> C/C++ General -> Paths and Symbols -> (GNU C++) Source Location -> Link Folder -> check "Link to folder..." -> Browse -> select eingen3 folder(eg. /usr/include/eigen3) -> OK -> Apply
2. (proj prop -> C/C++ General -> Paths and Symbols ->) (GNU C++) Includes -> Add -> Workspace -> select "eigen3" -> OK -> Apply
3. Click OK and close the Properties window.

The progress bar is moving, and Analyzing is finished, then you can see green terms related Eigen.

I hope this makes you help.