The same problem exist for CMAKE_UNITY_BUILD too
==> build/standalone/_deps/myproject-build/CMakeFiles/myproject.dir/Unity/unity_0_cxx.cxx <==
/* generated by CMake */
/* NOLINTNEXTLINE(bugprone-suspicious-include,misc-include-cleaner) */
#include "/home/klein_cl/Workspace/cpp/myproject/src/ConnectionManager.cpp"