GCC C++ Linker section on FC13

Question

I am trying to get OpenGL and Glut running on Eclipse Linux FC13.

After spending two days on it, I admit that help is needed. On FC13 Eclipse, I see /usr/include/GL and /usr/include/SDL -- so the libs are there. I started Eclipse, and then tried to run a simple program on it, just like suggested here. However, two things were missing in those steps:

1. Callisto could not be installed -- nothing was found from the repository
2. GCC C++ Linker is not found anywhere for Eclipse 3.5.2.

When trying to run the program, I see this error:

Program does not exist

and sometimes

Binary not found

If I just run the "hello world" it works, but otherwise, those errors happen every time I try to include glut gl or sdl commands.

Here is an excerpt from the compiler error:

make all 
g++ -O2 -g -Wall -fmessage-length=0   -c -o tw.o tw.cpp
tw.cpp: In function ‘void main_loop_function()’:
g++ -o tw tw.o

Yes, apparently the compiler is not able to see the glu, gl, sdl and glut libraries.

Some suggestion on how to fix?

Answer 1

Check if the compiler is able to find the appropriate header files or not. If not, you are sure to get compiler errors. Try using the -I option to set the appropriate paths.

Once you've fixed that, check if there are any linker errors (undefined symbols/references or the sort). If you do: Try to set the library paths using the -L option and ask the compiler to link in the specific libraries by using the -l option. Note that the latter expects something like -lmath where in reality the library being linked in is actually called libmath.so or libmath.a (as the case may be).

Answer 2

You have to tell the compiler that your program uses additional libraries.

Use the -l argument

g++ -O2 -g -Wall -fmessage-length=0  -lglut -lGL -lGLU -lX11  -c -o tw.o tw.cpp

This should help against unsatisfied link errors.

You can set these in the properties of your Project. Properties->c/c++ Build->Settings->Tool Settings->Linker