Package: oclgrind Version: 15.5-2 Severity: seriousoclgrind FTBFS on big-endian systems (mips,powerpc,s390x) with several test failures:
https://buildd.debian.org/status/fetch.php?pkg=oclgrind&arch=mips&ver=15.5-2&stamp=1449588354
Given that this is its first upload with tests enabled, it is fairly likely that it has never worked on such systems, and it may be appropriate to have it removed: see https://wiki.debian.org/ftpmaster_Removals for how to do this.