g++ -g -Wall -std=c++17
    -c ./src/pch.hpp -o ./build/pch.hpp.gch

g++ -g -Wall -std=c++17
        -c ./src/*.cpp
        -I./build/ -include pch.hpp

1 error generated.
<built-in>:1:10: fatal error: 'pch.hpp' file not found
#include "pch.hpp"

g++ -g -Wall -std=c++17
        -c ./src/*.cpp
        -I./build/ -include pch.hpp.gch
./build/pch.hpp.gch:2:22: error: source file is not valid UTF-8

g++ -g -Wall -std=c++17
        -c ./src/*.cpp
        -I./src/ -I./build/ -include pch.hpp

g++ -g -Wall -std=c++17
        -c ./src/*.cpp
        -include ./build/pch.hpp