Nice catch Orion, I missed ABI changes introduced with libdap-3.17.2 . I see many incompatible ABI changes in library libdap.so available in package libdap-3.17.2-1.fc24 when compared with libdap-3.17.0-1.fc24 . Possible ABI changes detected by libabigail are at https://paste.fedoraproject.org/357208/ .
This update will impact dependent packages if they are using changed/removed ABIs.
Builds on ppc64(le). Also, basic API call works fine.