Simple OpenGL program won't compile

kcor · 10-26-2012, 11:28 PM

Hi all,

I just installed slackware 14.0 and am now trying to compile a simple openGL cube program. I've verified I have the required OpenGL files but I receive the following output when I attempt to run 'make' in the same folder as my cpp files.

Here is the entire output:

Code:

make 
g++ -Wall -o cube main.cpp imageloader.cpp -lglut
imageloader.cpp: In function 'Image* loadBMP(const char*)':
imageloader.cpp:141:2: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
/usr/lib64/gcc/x86_64-slackware-linux/4.7.1/../../../../x86_64-slackware-linux/bin/ld: /tmp/ccJVh8Br.o: undefined reference to symbol 'glNormal3f'
/usr/lib64/gcc/x86_64-slackware-linux/4.7.1/../../../../x86_64-slackware-linux/bin/ld: note: 'glNormal3f' is defined in DSO /usr/lib64/libGL.so.1 so try adding it to the linker command line
/usr/lib64/libGL.so.1: could not read symbols: Invalid operation
collect2: error: ld returned 1 exit status
make: *** [cube] Error 1

Any ideas why this is happening ? Thanks in advance!

Martinus2u · 10-27-2012, 03:37 AM

the output is typical for a missing link library on the command line. the first google hit suggests -lGL -lGLU -lglut.

kcor · 10-27-2012, 08:36 AM

thanks! Come to find out I was linking outdated libraries. I changed my makefile to link -lGLU and -lglut