Analyse following RPM build log snippet. Describe contents accurately, without speculation or suggestions for resolution.            
Your analysis must be as concise as possible, while keeping relevant information intact.
Snippet: 
ocamlfind mklib -o mlnbd \
  -package unix -I . -I . \
  -ldopt '-Wl,-z,relro -Wl,--as-needed  -Wl,-z,pack-relative-relocs -Wl,-z,now --config=/usr/lib/rpm/redhat/redhat-hardened-clang-ld.cfg  -flto=thin -ffat-lto-objects -Wl,--build-id=sha1  ' \
  libnbdocaml_a-nbd-c.o libnbdocaml_a-buffer.o libnbdocaml_a-handle.o libnbdocaml_a-helpers.o  NBD.cmo \
  -L../lib/.libs -lnbd
The ocaml compiler is being used.