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	Sun, 24 Jan 2021 02:59:48 -0800 (PST)
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Date:	Sun, 24 Jan 2021 11:59:37 +0100
Message-ID:	<CAEhDDbAqy-=R5jRRzKNFVkDMzZEMb_8J=eBsaR_yo7rYoR4zHA@mail.gmail.com>
Subject:	Re: GLX and Xlib
To:	=?UTF-8?B?UmFmYcWCIEpvcGVr?= <rafaljopek AT hotmail DOT com>
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From:	Csaba Raduly via Cygwin <cygwin AT cygwin DOT com>
Reply-To:	Csaba Raduly <rcsaba AT gmail DOT com>
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X-MIME-Autoconverted:	from base64 to 8bit by delorie.com id 10OB0KCh027287

Hi Rafal,

On Sun, 24 Jan 2021 at 11:48, Rafał Jopek via Cygwin  wrote:
>
> Hello,
>
> I have a compile error, can anyone help fix this?
>
> An example is here:
>
https://www.khronos.org/opengl/wiki/Programming_OpenGL_in_Linux:_GLX_and_Xlib
>
> Compile error:
>
> $ gcc quad.c -o quad -lX11 -lGL -lGLU
> In file included from quad.c:12:
> /usr/include/w32api/GL/glu.h:68:78: error: expected ‘)’ before ‘*’ token
>    68 | void APIENTRY gluQuadricCallback(GLUquadric *qobj,GLenum
which,void (CALLBACK *fn)());
>       |
           ^~
>       |
           )

If you want to program with OpenGL, you need to install the development
package (libGLU-devel-9.0.1-1
<https://cygwin.com/cgi-bin2/package-cat.cgi?file=x86_64%2FlibGLU-devel%2FlibGLU-devel-9.0.1-1&grep=glu.h>
) and runtime (libGLU-9.0.1-1) .

At the moment, the Cygwin compiler is finding the Win32 OpenGL headers.
Because Cygwin is not Windows, this is not going to work.


Csaba

-- 
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by not doing the right thing. - Scott Meyers, An Effective C++11/14 Sampler
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to get the wrong information: this is what you want. - Scott Meyers
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