How to create dynamic libraries in C++ under Linux?

Question

linux

Hello!
Please tell me how to implement an analogue of the dll library in C ++ in Linux. That is, I have a program, I connect a library to it, then after some time I change the logic of the functions in the connected library, and without recompiling the main program, everything works with the new functionality.
I tried to do so. Created a class mac.cpp - this is the main program. And I created the mylib library without the main method, compiling it with the -c switch.
Then I built the program: g++ mac.cpp mylib.o . Everything works great, but if mylib.o is rebuilt separately, these changes are not reflected in the compiled application.

Answer 1

gcc allows you to create static and dynamic libraries. Use the -shared linking option and you will get a .so file at the output - which is the analogue of .dll in linux. Here
are all the linking parameters. Well, an example:
gcc *.o -shared -o file.so [-l<libraries>]