%fdupes(s) \
 symlinks=0; \
 %{-s:symlinks=1;} \
 fdupes -q -r -1 %1 | \
  while read target rest; do \
    for f in $rest; do \
      if test "$symlinks" = 1; then \
        ln -sf "${target/$RPM_BUILD_ROOT/}" "$f"; \
      else \
        ln -f "$target" "$f"; \
      fi ;\
  done ;\
done \
%{nil}