Bug#836413: opengm: FTBFS on powerpc: test-io-hdf5 data types not equal

[Aaron M. Ucko]

Source: opengm
Version: 2.3.6+20160901-1
Severity: important
Justification: fails to build from source

opengm now compiles on powerpc (thanks!), but hits a test suite error:

  23/49 Test #24: test-io-hdf5 .....................***Exception: Other  0.11 sec
  terminate called after throwing an instance of 'std::runtime_error'
    what():  Data types not equal error.

FWIW, sparc64 hit the same error in 2.3.6+20160814-1.  (As of this
report, builds of 2.3.6+20160901-1 for sparc64 and most other
architectures are still in progress.)

Could you please take a look?

Thanks!