[   71s] In file included from
/home/abuild/rpmbuild/BUILD/qpid-proton-0.16.0/proton-c/bindings/cpp/src/connection.cpp:25:0:
[   71s]
/home/abuild/rpmbuild/BUILD/qpid-proton-0.16.0/proton-c/bindings/cpp/include/proton/container.hpp:219:48:
error: 'std::function' has not been declared
[   71s]      PN_CPP_EXTERN void schedule(duration, std::function<void()>);
[   71s]                                                 ^~~~~~~~
[   71s]
/home/abuild/rpmbuild/BUILD/qpid-proton-0.16.0/proton-c/bindings/cpp/include/proton/container.hpp:219:56:
error: expected ',' or '...' before '<' token
[   71s]      PN_CPP_EXTERN void schedule(duration, std::function<void()>);
[   71s]                                                         ^

and other similar errors.  The above is from messaging:amqp/qpid-proton,
the factory version (0.12.2) fails to build with different messages.

The above suggests an #include is missing.  Note 0.17.0 is available upstream
(didn't check if that builds).

You can build against --alternative-project=openSUSE:Factory:Staging:Gcc7
standard x86_64