c++ - /usr/bin/ld: cannot find -

I have created a .so file and put it in place / opt / Lib and after this code was added to LD_LIBRARY_PATH when I try to compile my main program with the following command:

  G + + -Wall-I / home / Alvin / Development / Calculator / Main CPP -lcalc -o calculator    I get the following error:  
  / Usr / bin / ld: can not find -lcalc collect2: ld 1 out Take position    Can anyone help me with this? This is the first time that I am trying to create a shared library.   
 
  Add  -l / opt / lib  / Code> For its compiler parameter, it creates a compiler and linker search path for  libcal.so  in that folder.   

 


  







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