undefined reference to symbol 'gluLookAt'

Question

I'm using Fedora 16. I've installed freeglut and freeglut-devel packages. I tried to rum a simple opengl program, but i'm getting the following error

gcc cube.c -o cube -lglut
/usr/bin/ld: /tmp/ccSFol4w.o: undefined reference to symbol 'gluLookAt'
/usr/bin/ld: note: 'gluLookAt' is defined in DSO /usr/lib/libGLU.so.1 so try adding it to the linker command line
/usr/lib/libGLU.so.1: could not read symbols: Invalid operation
collect2: ld returned 1 exit status

why someone is always so mean by downing a question that he is either not interested or unable to answer? This question help me solve a similar question. This question and the asker should be respected. — user2384994, May 10 '14 at 12:10

score 7 · Answer 1 · answered Nov 28 '13 at 21:04

7

Compile : g++ sampleCode.cpp -lglut -lGL -lGLU

run : ./a.out

is your answer.

answered Nov 28 '13 at 21:04

Sabri Meviş

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score 4 · Accepted Answer · edited Jan 10 '16 at 06:17

4

You have to link some gl libraries.

g++ cube.c -o cube -I /usr/lib/libglut.so.3 /usr/lib/libGL.so.1 /usr/lib/libGLU.so.1 -lGL

edited Jan 10 '16 at 06:17

demonplus

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answered Dec 16 '12 at 10:12

Ferran Arau Castell

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score 2 · Answer 3 · answered Jan 17 '12 at 10:46

I think you should consult some introduction text on compilers, linkers and libraries, i.e. how the pieces come together when building a program. In essence the linker is telling you, that there are some loose ends and it cannot finish linking the program due to them. Adding a library happens by the -l switch with library name (GLU in your case), not by giving it a full path to the library file.

score 1 · Answer 4 · edited Jan 10 '16 at 06:18

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I got the exact same problem in Ubuntu 12.04 LTS when I wrote:

g++ square.cpp -lglut

But then I found on the web that some people also added -lGL and lGLU so I did it and it compiles now:

g++ square.cpp -lglut -lGL -GLU

edited Jan 10 '16 at 06:18

demonplus

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answered Feb 19 '13 at 19:28

zelgit

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What does the `gut` library do? – genpfault Feb 19 '13 at 20:47
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Sorry it should of course be -lglut instead of -lgut. It is a OpenGL library that is needed, you could read more here: http://en.wikipedia.org/wiki/OpenGL_Utility_Toolkit – zelgit Feb 28 '14 at 01:50

score 1 · Answer 5 · answered Jan 17 '12 at 09:36

1

do what it says

gcc cube.c -o cube -lglut -lGLU

answered Jan 17 '12 at 09:36

stativ

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Thanks, but i got the following errors. /tmp/ccYMzpUF.o: In Function 'drawbox' : cube.c:(.text+0x1a): undefined reference to 'glBegin' like this it lists all functions starting with gl.. – Rudra Murthy Jan 17 '12 at 10:15
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Then add -lGL too. You really should read something about the linker. – stativ Jan 17 '12 at 10:30
I'm getting the same error. Undefined reference to glBegin. – Rudra Murthy Jan 17 '12 at 10:38
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That command misses the linkage to GL itself. The command should read `gcc -o cube cube.c -lGL -lGLU -lglut` – datenwolf Jan 17 '12 at 10:43

undefined reference to symbol 'gluLookAt'

5 Answers5