kf5kio currently fails on macOS due to linker reporting duplicate operators:
duplicate symbol 'operator>>(QDBusArgument const&, QSslCertificate&)' in: src/kssld/CMakeFiles/kssld.dir/kssld.cpp.o lib/libKF5KIOCore.a(ksslcertificatemanager.cpp.o) duplicate symbol 'operator<<(QDBusArgument&, QSslCertificate const&)' in: src/kssld/CMakeFiles/kssld.dir/kssld.cpp.o lib/libKF5KIOCore.a(ksslcertificatemanager.cpp.o) duplicate symbol 'operator>>(QDBusArgument const&, KSslCertificateRule&)' in: src/kssld/CMakeFiles/kssld.dir/kssld.cpp.o lib/libKF5KIOCore.a(ksslcertificatemanager.cpp.o) duplicate symbol 'operator<<(QDBusArgument&, KSslCertificateRule const&)' in: src/kssld/CMakeFiles/kssld.dir/kssld.cpp.o lib/libKF5KIOCore.a(ksslcertificatemanager.cpp.o) duplicate symbol 'operator>>(QDBusArgument const&, QSslError::SslError&)' in: src/kssld/CMakeFiles/kssld.dir/kssld.cpp.o lib/libKF5KIOCore.a(ksslcertificatemanager.cpp.o) duplicate symbol 'operator<<(QDBusArgument&, QSslError::SslError const&)' in: src/kssld/CMakeFiles/kssld.dir/kssld.cpp.o lib/libKF5KIOCore.a(ksslcertificatemanager.cpp.o) ld: 6 duplicate symbols for architecture x86_64 clang: error: linker command failed with exit code 1 (use -v to see invocation)