@aheimberger Solved it by myself. I had to use the cfg directory, for what I hade two possiblities. Either using all cfg files within the cppcheck cfg directory or only the specific one for qt. cmd to use all cfg-files in director cppcheck/cfg, needs suppress of missing includes: -check-config --suppress=missingIncludeSystem . cmd to use single qt cfg file: --library=/home/ahe/Projects/cppcheck/cfg/qt.cfg See cppcheck: https://github.com/danmar/cppcheck https://github.com/danmar/cppcheck/tree/master/cfg