Tests are failing on big endian arches like s390(x) or ppc64

from build.log
...
Executing(%check): /bin/sh -e /var/tmp/rpm-tmp.2MciND
+ umask 022
+ cd /builddir/build/BUILD
+ cd ndn-cxx-ndn-cxx-0.3.4
+ export LD_LIBRARY_PATH=/builddir/build/BUILD/ndn-cxx-ndn-cxx-0.3.4/build
+ LD_LIBRARY_PATH=/builddir/build/BUILD/ndn-cxx-ndn-cxx-0.3.4/build
+ build/unit-tests
Running 607 test cases...
../tests/unit-tests/interest.t.cpp(887): error in "Decode": check i.getNonce() == 1U failed [16777216 != 1]
../tests/unit-tests/interest.t.cpp(907): error in "DecodeFromStream": check i.getNonce() == 1U failed [16777216 != 1]
../tests/unit-tests/interest.t.cpp(931): error in "Encode": check { Interest1, Interest1 + sizeof(Interest1) } == { wire.begin(), wire.end() } failed. 
Mismatch in a position 83:  != �
Mismatch in a position 86: � != 
../tests/unit-tests/interest.t.cpp(940): error in "Encode": check { Interest2, Interest2 + sizeof(Interest2) } == { wire.begin(), wire.end() } failed. 
Mismatch in a position 83:  != �
Mismatch in a position 86: � != 
../tests/unit-tests/name.t.cpp(408): error in "Compare": check -1 == Name("/A") .compare(Name("/B")) failed [-1 != -2]
../tests/unit-tests/name.t.cpp(417): error in "Compare": check -1 == Name("/Z/A/Y") .compare(1, 1, Name("/B")) failed [-1 != -2]
../tests/unit-tests/name.t.cpp(426): error in "Compare": check -1 == Name("/Z/A") .compare(1, Name::npos, Name("/B")) failed [-1 != -2]
../tests/unit-tests/name.t.cpp(435): error in "Compare": check -1 == Name("/Z/A/Y") .compare(1, 1, Name("/X/B/W"), 1, 1) failed [-1 != -2]
../tests/unit-tests/name.t.cpp(444): error in "Compare": check -1 == Name("/Z/A/Y") .compare(1, 1, Name("/X/B"), 1) failed [-1 != -2]
*** 9 failures detected in test suite "ndn-cxx Unit Tests"
error: Bad exit status from /var/tmp/rpm-tmp.2MciND (%check)

for full logs please see http://ppc.koji.fedoraproject.org/koji/taskinfo?taskID=2833893 or http://s390.koji.fedoraproject.org/koji/taskinfo?taskID=1971883

Version-Release number of selected component (if applicable):
libndn-cxx-0.3.4-4.fc23