CMake Warning:
  Manually-specified variables were not used by the project:

    CMAKE_EXPORT_NO_PACKAGE_REGISTRY
    CMAKE_INSTALL_BINDIR
    CMAKE_INSTALL_DATAROOTDIR
    CMAKE_INSTALL_INCLUDEDIR
    CMAKE_INSTALL_LIBDIR
    CMAKE_INSTALL_LIBEXECDIR
    CMAKE_INSTALL_OLDINCLUDEDIR
    CMAKE_INSTALL_SBINDIR
    use_libc++


doxygen/1.8.18 (test package): WARN: CMake generator could not be deduced from settings
doxygen/1.8.18 (test package): WARN: compiler setting should be defined.
CMake Warning:
  Manually-specified variables were not used by the project:

    CMAKE_EXPORT_NO_PACKAGE_REGISTRY
    CONAN_EXPORTED
    CONAN_IN_LOCAL_CACHE


doxygen/1.8.18 (test package): WARN: build_type setting should be defined.
doxygen/1.8.18 (test package): WARN: compiler setting should be defined.