I have a library project mk_lib which creates a shared library mk_lib.so when built using make command. I then install this library to /usr/local/lib/ using the command sudo make install. The library header file lib.h is also installed to /usr/local/include/ using install command. The main executable makes use of the mk_lib library. This library is made available using sudo ldconfig command which makes path /usr/local/lib/ as library search path during executable mk_demo creation. I want to know is it possible to perform the three library related actions (creation using make and installation using sudo make install to copy library to /usr/local/lib/ and install header file lib.h to usr/local/include) as one command instead of executing them separately. Basically if library build is successful then automatically call install commands else don’t.

mk_demo/main.cpp

#include <iostream>

#include "lib.h"

int main(int, char**){
    std::cout << "Hello, from mk_demo!n";
    std::cout << add(2, 3) << std::endl;
    std::cout << subtract(2, 3) << std::endl;
    std::cout << multiply(2, 3) << std::endl;
    std::cout << divide(2, 3) << std::endl;
}

mk_demo/CMakeLists.txt

cmake_minimum_required(VERSION 3.5.0)
project(mk_demo VERSION 0.1.0 LANGUAGES C CXX)

add_subdirectory(${PROJECT_SOURCE_DIR}/mk_lib)

add_executable(${PROJECT_NAME} main.cpp)
target_link_libraries(${PROJECT_NAME} mk_lib)

mk_demo/build/

mk_demo/mk_lib/lib.h

#ifndef LIB_H
#define LIB_H

int add(const int a, const int b);
int subtract(const int a, const int b);
int multiply(const int a, const int b);
int divide(const int a, const int b);

#endif

mk_demo/mk_lib/lib.cpp

#include "lib.h"

int add(const int a, const int b) {
    return a + b;
}

int subtract(const int a, const int b) {
    return a - b;
}

int multiply(const int a, const int b) {
    return a * b;
}

int divide(const int a, const int b) {
    return a / b;
}

mk_demo/mk_lib/CMakeLists.txt

cmake_minimum_required(VERSION 3.5.0)
project(mk_lib VERSION 0.1.0 LANGUAGES C CXX)

add_library(${PROJECT_NAME} SHARED lib.h lib.cpp)
install(TARGETS ${PROJECT_NAME} DESTINATION /usr/local/lib)

mk_demo/mk_lib/build/