CODEWITHSUNDEEP
c++ubuntumakefile
Breezyb12
Breezyb12

Reputation: 37

Running a program from a makefile

I received this sample makefile from my professor and I'm trying to run it on Ubuntu but the commands I'm typing won't run it. All the files in the makefile already exist and when I type make, it makes the files but the actual program doesn't run. I have tried to type ./a.out but that doesn't run it either. Please help me with what command to type for the program to run.

# Makefile for Library Management System
CXXFLAGS += --std=c++11

all: div main
rebuild: div clean main

debug: CXXFLAGS += -g
debug: rebuild

main: main.o controller.o view.o library.o publication.o
    $(CXX) $(CXXFLAGS) -o lms main.o controller.o view.o library.o publication.o 
main.o: main.cpp *.h
    $(CXX) $(CXXFLAGS) -c main.cpp
controller.o: controller.cpp *.h
    $(CXX) $(CXXFLAGS) -c controller.cpp
test_view: test_view.o controller.o view.o library.o publication.o
    $(CXX) $(CXXFLAGS) -o test_view test_view.o controller.o view.o library.o publication.o 
test_view.o: test_view.cpp view.h publication.h library.h
    $(CXX) $(CXXFLAGS) -c test_view.cpp
test_library: test_library.o library.o publication.o
    $(CXX) $(CXXFLAGS) -o test_library test_library.cpp library.o publication.o
test_library.o: test_library.cpp *.h
    $(CXX) $(CXXFLAGS) -c test_library.cpp
library.o: library.cpp *.h
    $(CXX) $(CXXFLAGS) -c library.cpp
test_publication: test_publication.o publication.o 
    $(CXX) $(CXXFLAGS) -o test_publication test_publication.o publication.o 
test_publication.o: test_publication.cpp *.h
    $(CXX) $(CXXFLAGS) -c test_publication.cpp
publication.o: publication.cpp *.h
    $(CXX) $(CXXFLAGS) -c publication.cpp

clean:
    -rm -f *.o lms test_age test_genre test_media test_publication test_library test_view test_view_actual.txt

div:
    @echo
    @echo 'X-X-X-X-X-X-X-X-X-X-X-X-X-X-X-X-'
    @echo '-X-X-X-X-X-X-X-X-X-X-X-X-X-X-X-X'
    @echo 'X-X-X-X-X-X-X-X-X-X-X-X-X-X-X-X-'
    @echo '-X-X-X-X-X-X-X-X-X-X-X-X-X-X-X-X'
    @echo

Upvotes: 0

Views: 1713

Answers (2)

Mobius
Mobius

Reputation: 2896

The job of make is to build the program, not run it, so the makefile is probably working just fine.

You can see from the line:

all: div main

that the makefile will try to build div and main by default.

There is a rule for div that just prints things to the console:

div:
    @echo
    @echo 'X-X-X-X-X-X-X-X-X-X-X-X-X-X-X-X-'
    @echo '-X-X-X-X-X-X-X-X-X-X-X-X-X-X-X-X'
    @echo 'X-X-X-X-X-X-X-X-X-X-X-X-X-X-X-X-'
    @echo '-X-X-X-X-X-X-X-X-X-X-X-X-X-X-X-X'
    @echo

as noted in the comments of the other answer, the rule for main has the flag to gcc -o lms so the actual output executable name will be lms.

You should really tell your professor that is is bad form, since a makefile is supposed to build a file with the same name as it's rule. (ie make main should build a file called main) Feel free to point him here if he disagrees.

Upvotes: 1

vincent
vincent

Reputation: 1390

Is there a file called 'lms'? Try running: ./lms

The things in the makefile after '-o' specify the output filenames. These are the programs you can run.

Upvotes: 3

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