From: earnie_boyd AT hotmail DOT com (Earnie Boyd)
Subject: Re: opengl, glut, and many syntax errors
17 Feb 1998 15:29:29 -0800
Message-ID: <19980217211505.433.qmail.cygnus.gnu-win32@hotmail.com>
Content-Type: text/plain
To: lmorgan1 AT ua1vm DOT ua DOT edu
Cc: gnu-win32 AT cygnus DOT com

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>From: lmorgan1 AT ua1vm DOT ua DOT edu
>Date: Tue, 17 Feb 1998 02:03:08
>Reply-To: lmorgan1 AT ua1vm DOT ua DOT edu
>Subject: opengl, glut, and many syntax errors
>To: gnu-win32 AT cygnus DOT com
>
>I'm trying to compile a c++ program that uses the header files
>    glut.h
>    glu.h
>    gl.h
>I am using the gcc compiler that came with the gnuwin32 cdk package.
>When I try to compile a program using the following command at the dos 
prompt
>    gcc (filename) -lstdc++ -lglut32 -lopengl32 -lglu32
>I get a lot of syntax errors such as the following...
>
>In file included from 
>C:\\gnuwin32\\b18\\H-i386-cygwin32\\lib\\gcc-lib\\i386-cygwin32\\cygnus-2.7.2-9
>70404\\../../../../i386-cygwin32/include/gl\\glut.h:14,
>                 from pc5d.cc:59:
>C:\\gnuwin32\\b18\\H-i386-cygwin32\\lib\\gcc-lib\\i386-cygwin32\\cygnus-2.7.2-9
>70404\\../../../../i386-cygwin32/include/GL/gl.h:1135: syntax error 
before 
>`void'
>C:\\gnuwin32\\b18\\H-i386-cygwin32\\lib\\gcc-lib\\i386-cygwin32\\cygnus-2.7.2-9
>70404\\../../../../i386-cygwin32/include/GL/gl.h:1473: syntax error 
before `*'
>
>,etc.
>
>These syntax errors occur in lines in gl.h and glu.h that has the word
>"APIENTRY" in them.  For example....
>     WINGDIAPI void APIENTRY glAccum (GLenum op, GLfloat value);
>(from line 1135 in gl.h)
>
>I think that the problem may be in the following lines of code in the 
glut.h 
>header.
>
>#ifndef __glut_h__
>#define __glut_h__
>
>#if defined(WIN32)
>#include <windows.h>
>#pragma warning (disable:4244)	/* disable bogus conversion warnings */
>#endif
>#include <GL/gl.h>
>#include <GL/glu.h>
>
>/* define APIENTRY and CALLBACK to null string if we aren't on Win32 */
>#if !defined(WIN32)
>#define APIENTRY
>#define CALLBACK
>#endif
>
>
>I suspect that the compiler is evaluating the line "#if defined(WIN32)" 
as 
>being false, but I don't know how to confirm this, and I wouldn't know 
what to 
>do about it if this were the case.  Can anyone tell me if I'm on the 
right 
>track, or if it is even possible to get compile opengl programs (with 
glut 
>utilities--glut.h) with this version of the gcc compiler.
>
>
>Any help would be appreciated,
>Lee Morgan
>lmorgan1 AT ua1vm DOT ua DOT edu
>
>P.S. I'm sure that the libraries and header files are in the correct 
>directories.
>
>P.P.S.  I read the mail in the Dec 1997 archives regarding 
>Re: g++, opengl, and STDCALL, * __attribute__ ((stdcall)) problem. 
Colin Peters 
>Re: g++, opengl, and STDCALL, * __attribute__ ((stdcall)) problem. 
Ulisses T. 
>Mello 
>These suggestions did not get rid of my syntax errors.  In some cases 
it just 
>moved the error to another point in the line.
>-
>For help on using this list (especially unsubscribing), send a message 
to
>"gnu-win32-request AT cygnus DOT com" with one line of text: "help".
>



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