Since ceph was upgraded to version 15, it fails to build on s390x:

[  115s] -- Configuring done
[  116s] CMake Error at cmake/modules/BuildBoost.cmake:280 (_add_executable):
[  116s]   Target "neorados" links to target "Boost::coroutine" but the target
was not
[  116s]   found.  Perhaps a find_package() call is missing for an IMPORTED
target, or
[  116s]   an ALIAS target is missing?
[  116s] Call Stack (most recent call first):
[  116s]   src/tools/CMakeLists.txt:21 (add_executable)

see also 
osc rbl openSUSE:Factory:zSystems ceph standard s390x
osc buildhist openSUSE:Factory:zSystems ceph standard s390x