CODEWITHSUNDEEP
c++linuxopengl
Muleque
Muleque

Reputation: 91

undefined reference to symbol glTexImage2D

I am trying to get OpenGL to work and have exactly the same problem like here: c++ OpenGL undefined references

I have both packages downloaded and used the same tutorial. Except I use Ubuntu 14.04.2 LTS and my problem is not solved with the mentioned Solution.

It reduces the problem to one undefined reference but still does not work:

g++ -Wall -lGL -o cube main.cpp imageloader.cpp -lglut -lGLU 
...
/usr/bin/ld: /tmp/ccWzhHjf.o: undefined reference to symbol 'glTexImage2D'
/usr/lib/x86_64-linux-gnu/mesa/libGL.so.1: error adding symbols: DSO missing from
command line collect2: error: ld returned 1 exit status make: *** [cube] Error 1

How can I fix this problem?

Upvotes: 2

Views: 3060

Answers (2)

QuesterDesura
QuesterDesura

Reputation: 415

/usr/bin/ld: /tmp/ccWzhHjf.o: undefined reference to symbol 'glTexImage2D'
/usr/lib/x86_64-linux-gnu/mesa/libGL.so.1: error adding symbols: DSO missing

The part libGL.so.1 basically tells you that there is something wrong with the shared library (it is missing). So all you need to do is to add the GL library like this: -lGL. The reason it is not working even when you already have -lGL is that you need to move the library flags after the .cpp files. So this should work:

 g++ -Wall -o cube main.cpp imageloader.cpp -lGL -lglut -lGLU

If you have similiar errors just try to add the flag.

Upvotes: 1

Durodola Opemipo
Durodola Opemipo

Reputation: 409

Edit the Make File and change it to this 

  CC = g++
CFLAGS = -Wall -lGL
PROG = cube

SRCS = main.cpp imageloader.cpp

ifeq ($(shell uname),Darwin)
    LIBS = -framework OpenGL -framework GLUT
else
    LIBS = -lglut -lGLU
endif

all: $(PROG)

$(PROG):    $(SRCS)
    $(CC) $(CFLAGS) -o $(PROG) $(SRCS) $(LIBS)

clean:
    rm -f $(PROG)

What I did was I added -lGL to CFLAGS and -lGLU to LIBS to the flags so it could link with the required library

Upvotes: 1

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