-bin/main: model.o material.o image.o skybox.o program.o main.cpp
- clang++ -g --std=c++17 $^ -I../assimp/include -L../assimp/lib -lassimp \
+CXX_FLAGS := -g --std=c++17 -Wall
+
+bin/main: model.o material.o image.o skybox.o program.o main.o
+ clang++ $(CXX_FLAGS) $^ \