Nilesh Patra <npatra974@gmail.com> writes: > h5c++ -shared -o libssu.so tree.o biom.o unifrac.o cmd.o unifrac_task.o > api.o -lc -lhdf5_cpp -L/lib Please try adding the h5c++ flag -shlib (which its manual page neglects to mention as a possibility :-/). -- Aaron M. Ucko, KB1CJC (amu at alum.mit.edu, ucko at debian.org) http://www.mit.edu/~amu/ | http://stuff.mit.edu/cgi/finger/?amu@monk.mit.edu