cannot find -lGL

[miss_b_have]

Not sure where to ask, but I hope someone here can help me.

I'm trying to compile some OpenGL examples and get the same error, nomater what I try:
cannot find -lGL

It looks like /etc/ld.so.conf points to /etc/ld.so.conf.d/*.conf and in there I have:
/usr/lib/fglrx
/usr/lib32/fglrx

I have several libGL.x and no idea wich one I'm using:
/usr/lib32/fglrx/libGL.so.1
/usr/lib32/fglrx/libGL.so.1.2
/usr/lib/fglrx/libGL.so.1
/usr/lib/fglrx/libGL.so
/usr/lib/fglrx/libGL.so.1.2

btw. I'm running Kubuntu 13.10 with fglrx-updates

[claydoh]

you will need some opengl -dev packages installed to compile whatever it is you are attempting to build.

Packages will be similarly named to these:
freeglut3
freeglut3-dev
libglew1.8
libglew-dev
libglu1-mesa
libglu1-mesa-dev
libgl1-mesa-glx
libgl1-mesa-dev

[miss_b_have]

I have installed:

freeglut3
freeglut3-dev
libglew1.8
libglew-dev
libglu1-mesa
libglu1-mesa-dev
libgl1-mesa-glx
libgl1-mesa-dev
and a ton of other -dev packages related to OpenGL

If I run:
ldconfig -v | grep 'libGL'
I get:
/sbin/ldconfig.real: Can't stat /lib/i686-linux-gnu: No such file or directory
/sbin/ldconfig.real: Can't stat /usr/lib/i686-linux-gnu: No such file or directory
/sbin/ldconfig.real: Path `/lib/x86_64-linux-gnu' given more than once
/sbin/ldconfig.real: Path `/usr/lib/x86_64-linux-gnu' given more than once
libGLU.so.1 -> libGLU.so.1.3.1
libGLEW.so.1.8 -> libGLEW.so.1.8.0
libGLEWmx.so.1.8 -> libGLEWmx.so.1.8.0
/sbin/ldconfig.real: Cannot stat /usr/lib/libfglrx_dm.so: No such file or directory
libGLU.so.1 -> libGLU.so.1.3.1
libGLESv2.so.2 -> libGLESv2.so.2.0.0
libGL.so.1 -> libGL.so.1.2
libGL.so.1 -> libGL.so.1.2
libGLC.so.0 -> libGLC.so.0.0.7
/sbin/ldconfig.real: Can't create temporary cache file /etc/ld.so.cache~: Permission denied

Not sure what to make of this thou...

[claydoh]

I dunno.
Been so very long since I have compiled anything so I am quite rusty.
Perhaps a link to the sources you are attempting to compile, and the steps you are using might help if someone doesn't chime in.

[blobfish]

try this command

ld --verbose | grep SEARCH

You should get something like:

SEARCH_DIR("/usr/x86_64-linux-gnu/lib64"); SEARCH_DIR("=/usr/local/lib/x86_64-linux-gnu"); SEARCH_DIR("=/usr/local/lib64"); SEARCH_DIR("=/lib/x86_64-linux-gnu"); SEARCH_DIR("=/lib64"); SEARCH_DIR("=/usr/lib/x86_64-linux-gnu"); SEARCH_DIR("=/usr/lib64"); SEARCH_DIR("=/usr/local/lib"); SEARCH_DIR("=/lib"); SEARCH_DIR("=/usr/lib");

See if the directories you expect are there.

Your approach of adding the paths to the linker seems out of the ordinary. If everything is installed from the repos you shouldn't need to add the extra paths. I am tending to agree with claydoh that you are missing some -dev package. More details on what and how your are building would help.

[miss_b_have]

If I run:

ld --verbose | grep SEARCH

I get:

SEARCH_DIR("/usr/x86_64-linux-gnu/lib64"); SEARCH_DIR("=/usr/local/lib/x86_64-linux-gnu"); SEARCH_DIR("=/usr/local/lib64"); SEARCH_DIR("=/lib/x86_64-linux-gnu"); SEARCH_DIR("=/lib64"); SEARCH_DIR("=/usr/lib/x86_64-linux-gnu"); SEARCH_DIR("=/usr/lib64"); SEARCH_DIR("=/usr/local/lib"); SEARCH_DIR("=/lib"); SEARCH_DIR("=/usr/lib");

I haven't added any paths to the linker myself.

The project I'm trying to compile is from the OpenGL wiki:

/* Using the standard output for fprintf */
#include <stdio.h>
#include <stdlib.h>
/* Use glew.h instead of gl.h to get all the GL prototypes declared */
#include <GL/glew.h>
/* Using the GLUT library for the base windowing setup */
#include <GL/glut.h>
/* ADD GLOBAL VARIABLES HERE LATER */
 
int init_resources(void)
{
  /* FILLED IN LATER */
  return 1;
}
 
void onDisplay()
{
  /* FILLED IN LATER */
}
 
void free_resources()
{
  /* FILLED IN LATER */
}
 
int main(int argc, char* argv[])
{
  /* Glut-related initialising functions */
  glutInit(&argc, argv);
  glutInitDisplayMode(GLUT_RGBA|GLUT_DOUBLE|GLUT_DEPTH);
  glutInitWindowSize(640, 480);
  glutCreateWindow("My First Triangle");
 
  /* Extension wrangler initialising */
  GLenum glew_status = glewInit();
  if (glew_status != GLEW_OK)
  {
    fprintf(stderr, "Error: %s\n", glewGetErrorString(glew_status));
    return EXIT_FAILURE;
  }
 
  /* When all init functions run without errors,
  the program can initialise the resources */
  if (1 == init_resources())
  {
    /* We can display it if everything goes OK */
    glutDisplayFunc(onDisplay);
    glutMainLoop();
  }
 
  /* If the program exits in the usual way,
  free resources and exit with a success */
  free_resources();
  return EXIT_SUCCESS;
}

And the Makefile looks like this:

CC=g++
LDLIBS=-lglut -lGLEW -lGL
all: triangle
clean:
	rm -f *.o triangle
.PHONY: all clean

The whole example is available here:
http://en.wikibooks.org/wiki/OpenGL_...L_Introduction

[miss_b_have]

I just purged fglrx-updates and fglrx-amdccle-updates, and then I installed the latest beta from ATI

Now everything seams to work...

[blobfish]

I haven't added any paths to the linker myself.

Sorry. You said you were getting an error no matter what you tried, then listed the contents of your linker config files. This game me the impression you were manually adding paths.

Glad to here you got it working.