Unix Make file error

Question

我在编译makefile时遇到困难，我想知道是否可以收到有关我做错的任何输入。出于某种原因，它告诉我我无法在shell中编译并使用linprog代替？

CC = g++
DIR = /home/majors/dlowe/makefileHW
CFLAGS = -g -I. -c
LFLAGS = -g

make: main.o size.o history.o extra.o
        $(CC) $(LFLAGS) -o make main.o size.o history.o extra.o
main.o: main.cpp
        $(CC) $(CFLAGS) main.cpp
size.o: size.cpp size.h
        $(CC) $(CFLAGS) size.cpp
history.o: history.cpp history.h
        $(CC) $(CFLAGS) history.cpp
extra.o: extra.cpp extra.h
        $(CC) $(CFLAGS) extra.cpp
clean:
        rm -rf *.o

错误在这里：

enter code here
dlowe@shell.cs.fsu.edu:~/makefileHW> make -f Assignment7
g++ -g -I. -c main.cpp
No programming on shell. Please use linprog instead.
g++ -g -I. -c size.cpp
No programming on shell. Please use linprog instead.
g++ -g -I. -c history.cpp
No programming on shell. Please use linprog instead.
g++ -g -I. -c extra.cpp
No programming on shell. Please use linprog instead.
g++ -g -o make main.o size.o history.o extra.o
No programming on shell. Please use linprog instead.
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