Ignoring Boost restriction on optional lvalue assignment from rvalues 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 GTSAM_BUILD_DOCS GTSAM_BUILD_DOC_HTML GTSAM_WRAP_SERIALIZATION ld: warning: direct access in function '(anonymous namespace)::root_directory_start(std::__1::basic_string, std::__1::allocator > const&, unsigned long)' from file '/Users/jenkins/w/cci_PR-3683/.conan/data/boost/1.71.0/_/_/package/06805efa386accf14d38f9769539c6e94cd8e1a4/lib/libboost_filesystem.a(path.o)' to global weak symbol 'std::__1::char_traits::eq(char, char)' from file 'CMakeFiles/gtsam.dir/base/Matrix.cpp.o' means the weak symbol cannot be overridden at runtime. This was likely caused by different translation units being compiled with different visibility settings. ld: warning: direct access in function '(anonymous namespace)::is_root_separator(std::__1::basic_string, std::__1::allocator > const&, unsigned long)' from file '/Users/jenkins/w/cci_PR-3683/.conan/data/boost/1.71.0/_/_/package/06805efa386accf14d38f9769539c6e94cd8e1a4/lib/libboost_filesystem.a(path.o)' to global weak symbol 'std::__1::char_traits::eq(char, char)' from file 'CMakeFiles/gtsam.dir/base/Matrix.cpp.o' means the weak symbol cannot be overridden at runtime. This was likely caused by different translation units being compiled with different visibility settings. ld: warning: direct access in function 'boost::filesystem::path::m_path_iterator_increment(boost::filesystem::path::iterator&)' from file '/Users/jenkins/w/cci_PR-3683/.conan/data/boost/1.71.0/_/_/package/06805efa386accf14d38f9769539c6e94cd8e1a4/lib/libboost_filesystem.a(path.o)' to global weak symbol 'std::__1::char_traits::eq(char, char)' from file 'CMakeFiles/gtsam.dir/base/Matrix.cpp.o' means the weak symbol cannot be overridden at runtime. This was likely caused by different translation units being compiled with different visibility settings. CMake Warning: Manually-specified variables were not used by the project: CMAKE_EXPORT_NO_PACKAGE_REGISTRY