cmake HAVE_S390X examples

ceph/ceph src/arch/CMakeLists.txt :10 

elseif(HAVE_S390X)

ceph/ceph src/common/CMakeLists.txt :243 

elseif(HAVE_S390X)

steineggerlab/foldmason lib/foldseek/lib/mmseqs/CMakeLists.txt :90 

elseif (HAVE_S390X)