prepare (1/2): 
finished

make (2/2): 
make: Entering directory '/in'
g++ -c -O2 -Werror -Wall -Wextra -Wpedantic -std=c++17 global.cpp
g++ -c -O2 -Werror -Wall -Wextra -Wpedantic -std=c++17 game.cpp
g++ -c -O2 -Werror -Wall -Wextra -Wpedantic -std=c++17 main.cpp
g++ -o all global.o game.o main.o
make: Leaving directory '/in'
finished

all tasks finished, build successfully