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OpenGL problems


Dear Cygwin

I've just downloaded the full complement of CYGWIN and CYGWIN/X files with the intent of doing builds of some standard X Windows / OpenGl (and also Motif) programs . However, I am encountering difficulties. Could you please help me with the following :

I'm unable to compile Kilgard's glxsimple.c on my Cygwin installation. I've tried using the following command, which works on my Redhat Linux 8.0 laptop :

gcc -o glxsimple glxsimple -lGL -LX11R6

but it resulted in a "no such file : GL/glx.h" error. I adjusted this to

gcc -o glxsimple glxsimple -I/usr/X11R6/include -lGL -LX11R6

which seemed to compile, but produced a "cannot find -lGL" from the linker.

After reading /usr/doc/opengl-1.1.0, I then tried

gcc -o glxsimple glxsimple -I/usr/X11R6/include -Lw32api -lopengl -LX11R6

which again appeared to compile, but resulted in a mound of "undefined reference" messages to GL function calls, and some to X calls as well.

Can you please provide any help at all ? An explicit compile and link instruction is what I need, but even the command to build Oliver Jones "Hello World" (from his "Introduction to the X Window system") or something from Kilgard (involving X, OpenGL, and Motif) on Cygwin would be extremely helpful.

Thanks for the consideration.

Walt Michaluk


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