Re: [Open Babel] OB API make error: linker input file unused because linking not done

> g++: -lopenbabel: linker input file unused because linking not done This sounds like you are supplying -lopenbabel when you are compiling objects before linking the binary. Assuming the binary links, there's no problem -- the compiler is just telling you that you don't need -lopenbabel (e.g.,

Re: [Open Babel] OB API make error: linker input file unused because linking not done

So the issue was with the BABEL_DATADIR and BABEL_LIBDIR and it was not reading the molecule. Now I get the correct molecular weights. But still have no clue whats triggering g++: -lopenbabel: linker input file unused because linking not done Any suggestions ? Will this create trouble in future.