Question

I created a .so file and put it in the location /opt/lib and added this path to LD_LIBRARY_PATH now after this when I try to compile my main program with the following command:

g++ -Wall -I/home/alwin/Development/Calculator/ main.cpp -lcalc -o calculator

I get the following error:

/usr/bin/ld: cannot find -lcalc
collect2: ld returned 1 exit status

Can someone help me with this.
I created the shared library using the code blocks IDE

Answer 1

Add -L/opt/lib to your compiler parameters, this makes the compiler and linker search that path for libcalc.so in that folder.