I don't see any reason why glite-lbjp-common-gsoap-plugin-3.2.12-7 can not be built on epel7 ppc64le.
This ppc64le version was available on fedora 23 everything packages.
I tried to build it on eple7 and it was successfull.
Same comment on aarch64 arch.
Yes, this package and its dependencies are missing in ppc64le and aarch64 repositories.
I'm not sure, what's going on. I guess it may be because of missing dependencies at the time? (for example globus-gssapi-gsi built later?)
glite-lbjp-common-gsoap-plugin has been rebuilt due to gsoap update. Also there is running a mass rebuild too, which could fix also the dependencies. Closing.