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Re: OpenGL and Cygwin

Suresh Venkatasubramanian wrote:

  I apologize in advance if this duplicates questions already asked and
answered: I have searched the cygwin/cygwin-apps mailing lists already,
and there appears to be no clear answer, and most of the FAQs are a bit

I have an opengl program that I wish to compile under the cygwin
environment, but using NO mesa drivers, only the native windows drivers.
This program uses GLU and GLUT, as well as opengl and nvidia extensions.

Now I have downloaded the nvidia extensions headers, and am able to create
object files correctly, after some experimenting (it appears that I need
to use the -mno-cygwin flag to enable the _WIN32 macros).

Do "the nvidia extensions headers" you downloaded include gl.h ? If yes, that could be your problem.

However, I have severe problems when linking using g++ *.o -lglu32
-lglut32 -lopengl32 (as per the /usr/doc/opengl*/README file).

/usr/doc/opengl*/README says:

Add -lglut32 -lglu32 -lopengl32 to your link command (in that order).

 Most of the
stubs cannot be found. A sampling of the errors I get:

....undefined reference to `_glTexParameterf@12` ....undefined reference to`_glPixelStorei@8`

A sign that I am probably missing some more basic libs is that I even get
undefined references to __assert, as well as something mysterious called
__imp__iob, which again looks like somethng unrelated to the opengl code I
am compiling.

I'd appreciate any help....

Try something simple, like compiling and linking the following example with g++ -o helloGlut helloGlut.c -lglut32 -lglu32 -lopengl32

and report _all_ and _exact_ error messages to this list (not to me!).

---------------------- helloGlut.c ----------------------------
#include <GL/glut.h>

void display_func()

int main(int argc, char* argv[])
glutInit(&argc, argv);
glutCreateWindow("Hello GLUT!");
return 0;
---------------------- helloGlut.c ----------------------------

André Bleau, Cygwin's OpenGL package maintainer.

Please address all questions and problem reports about Cygwin's OpenGL package to .

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