[CMake] Write CMakeLists.txt for this C++ program

[dexter810]

This is the program I want to run, main.cpp:

#include <iostream>
#include "yaracpp/yaracpp.h"

int main() {
    yaracpp::YaraDetector yara;
    yara.addRules(R"(

        rule example {
            strings:
                $s = "Hello"
            condition:
                $s
        })");


    if (yara.analyze("test_file")) {
        for (const auto& rule : yara.getDetectedRules()) {
            std::cout << rule << '\n';
        }
    }
}


When I run this command on the terminal it compiles successfully: 

g++ -Iinclude -Ibuild/deps/yara/src/yara/libyara/include/ -Lbuild/src/
-Lbuild/deps/yara/src/yara/libyara/.libs/ main.cpp -lyaracpp -lyara
-lpthread -lssl -lcrypto

*Approach 1:*
My CMakeLists.txt is:

cmake_minimum_required(VERSION 3.6)
project(main CXX C)

add_executable(main main.cpp)

set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Iinclude
-Ibuild/deps/yara/src/yara/libyara/include -Lbuild/src
-Lbuild/deps/yara/src/yara/libyara/.libs/")


target_link_libraries (main yaracpp yara pthread ssl crypto)


But this was not able to link it properly and threw errors that it cannot
find "yaracpp/yaracpp.h". The references for writing CMakeLists.txt like
this were: 

https://stackoverflow.com/questions/43136418/how-to-add-l-ell-compiler-flag-in-cmake

https://stackoverflow.com/questions/53879422/how-to-set-g-compile-options-in-clion?answertab=oldest#tab-top




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