Clion & Cmake connecting shared libraries?

Question

C++ / C#

Good afternoon. I made a dynamic library for my needs. And accordingly, in the project, if I compile through g ++, I perform a list of actions:

g++ -c main.cpp
g++ -o binary main.o -LDebug -lExtension -lSDL2 -Wl,-rpath,Debug

And I get a workable program that fulfills all the requirements. Debug - folder where the libExtension.so library is stored. Everything would be fine, but I cannot bind such an assembly to cmake in cilion. At the moment cimakelist looks like this:

cmake_minimum_required(VERSION 3.6)
project(1_)

set(CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR})
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")

find_package(SDL2 REQUIRED)


if(SDL2_TRUE)
    include_directories(${SDL2_INCLUDE_DIR})
endif()

set(SOURCE_FILES main.cpp sources/Display.cpp headers/Display.h)
add_executable(${PROJECT_NAME} ${SOURCE_FILES})

target_link_libraries(${PROJECT_NAME} ${SDL2_LIBRARY})
target_link_libraries(${PROJECT_NAME} Extension)

How can one still specify cmake or build flags as when building directly with g++ or are there any other ways?
PS I'm not good at cmake