CMake and Libraries - Part 1

CMakeLists.txt

cmake_minimum_required (VERSION 3.6)
project (hello VERSION 1.0)

set (LIBRARY_OUTPUT_PATH ${CMAKE_SOURCE_DIR}/output)

add_subdirectory (greeter)
add_subdirectory (hello_app)

greeter|CMakeLists.txt

cmake_minimum_required (VERSION 3.6)
project (greeter VERSION 1.0)

include_directories (${CMAKE_CURRENT_SOURCE_DIR}/includes)

set (GREETER_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/src)
set (GREETER_SOURCE ${GREETER_SOURCE_DIR}/greeter.c)

add_library (greeter SHARED ${GREETER_SOURCE})
add_library (greeter_static STATIC ${GREETER_SOURCE})

target_include_directories (greeter PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/includes)

greeter|includes|greeter.h

#ifndef GREETER_H
#define GREETER_H

void say_hello_to(char *nane);

#endif

greeter|src|greeter.c

#include <stdio.h>
#include "greeter.h"

void say_hello_to (char *name) {
  printf("Hello %s\n", name);
}

hello_app|CMakeLists.txt

cmake_minimum_required (VERSION 3.6)
project (app VERSION 1.0)

set (APP_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/src)
set (APP_SOURCE ${APP_SOURCE_DIR}/main.c)

add_executable (app ${APP_SOURCE})
target_link_libraries (app greeter)

hello_app|src|main.c

#include "greeter.h"

int main(){
  say_hello_to ("cristian");
}