1CXXFLAGS += `${SDL_CONFIG} --cflags` -D_REENTRANT 2LIBS = `${SDL_CONFIG} --libs` -lSDL_image 3 4all: 5 ${CXX} -c -o SFont.o SFont.c ${CXXFLAGS} 6 ${CXX} -c -o link2.o link2.cpp ${CXXFLAGS} 7 ${CXX} -c -o pengpong.o pengpong.cpp ${CXXFLAGS} 8 ${CXX} -o pengpong pengpong.o link2.o SFont.o ${CXXFLAGS} ${LIBS} 9