I thought it might be an error because of some kind of cached variable. I trashed the whole kstars directory and cloned the repo.
CMake Error at /usr/lib/x86_64-linux-gnu/cmake/StellarSolver/StellarSolverConfig.cmake:89 (message):
The imported target "StellarSolver::stellarsolver" references the file
but this file does not exist. Possible reasons include:
* The file was deleted, renamed, or moved to another location.
* An install or uninstall procedure did not complete successfully.
* The installation package was faulty and contained
but not all the files it references.Read More...