CMake dynamic library example

app.cpp

#include "lib.hpp"

int main() {
    talk();
}

CMakeLists.txt

cmake_minimum_required(VERSION 3.10)

project(dynamic-library-example CXX)

add_library(lib SHARED lib.cpp)
add_executable(app app.cpp)
target_link_libraries(app lib)

# cmake -B build-dir
# cmake --build build-dir
# cd build-dir
# ./app

lib.cpp

#include "lib.hpp"
#include <iostream>

void talk() {
    std::cout << "Hello World\n";
}

lib.hpp

#ifndef LIB_HPP_
#define LIB_HPP_

void talk();

#endif  // LIB_HPP_