Re: [HOpenGL] Re: Starting it all over again

8 Jan 2003

      Manuel Garcia Rodriguez wrote:
...
...
From: "Andre Furtado" 
To: 
Subject: Re: [HOpenGL] Starting it all over again
Date: Tue, 7 Jan 2003 18:01:46 -0200
[...]
Although "./configure" completed successfully, I
could not understand why the "library containing  
glutMainLoop" was not found: 
checking for library containing glutMainLoop... no
[...]
Yeh, I have the same problem, and I have a FULL
install (all packages). ld can't link any glut calls,
so there's a Cygwin setup problem. Cygwin Opengl
package comes with gl, glu, glut headers, glut32.dll,
and libglui.a libgluix.a. There's no libglut.a. I
think that OpenGL is required by XWindow, so libGL.a
and libGLU.a exist in X11R6 lib path. glxgears works,
so gl works, but glut doesn't.
The "w32api" package contains the following OpenGL libraries:

usr/lib/w32api/libglaux.a
usr/lib/w32api/libglu32.a
usr/lib/w32api/libglut.a
usr/lib/w32api/libglut32.a
usr/lib/w32api/libopengl32.a

However, these will be for the native Win32 environment (i.e. 
Microsoft's opengl32.dll), not Cygwin/X11.

It also contains the wingdi.h header, which contains the wgl*
functions (although those shouldn't be required for HOpenGL).

The "opengl" package contains glut32.dll (which is presumably for the
Win32 environment, not X11), plus headers (which should be portable):

usr/include/GL/gl.h
usr/include/GL/gl.h~
usr/include/GL/glu.h
usr/include/GL/glut.h

The Xprog "package" from the Cygwin port of XFree86 contains the X11
versions of the libraries:

lib/libGL.a
lib/libGLU.a
lib/libGLw.a

Plus the full set of X11 OpenGL headers:

include/GL/
include/GL/gl.h
include/GL/glext.h
include/GL/glu.h
include/GL/GLwDrawA.h
include/GL/GLwDrawAP.h
include/GL/GLwMDrawA.h
include/GL/GLwMDrawAP.h
include/GL/glx.h
include/GL/glxint.h
include/GL/glxmd.h
include/GL/glxproto.h
include/GL/glxtokens.h
include/GL/osmesa.h

The upshot of this is that they don't appear to provide a Cygwin/X11
version of GLUT, only a Win32 (i.e. mingw) version. However, it should
be possible to compile it from source, provided that you have the
Xprog package installed.

-- 
Glynn Clements 