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error including the damn libraries wtf?


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#1 wing_majin   Members   -  Reputation: 122

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Posted 24 October 2001 - 06:57 PM

*anger* I can't begin to say how much long i've dealt with this.... I'm trying to make some standard classes for my own use in GL. I write all my classes fine etc etc, nothing complicated as such to induce any errors. However as soon as I include JUST like the pros do in their source (ex NeHe etc) I get a wondeful trio of compiling errors telling me basically that things are either getting redefined or who knows etc etc. This occurs as soon as I include it AND when there's a file in it I downloaded as a tutorial or something that has the EXACT same thing "#include " as my own class..... c:\program files\include\gl\gl.h(1152) : error C2144: syntax error : missing ';' before type 'void' c:\program files\include\gl\gl.h(1152) : error C2501: 'WINGDIAPI' : missing storage-class or type specifiers c:\program files\include\gl\gl.h(1152) : fatal error C1004: unexpected end of file found (and those errors all occur, supposadly, IN gl/gl.h ) Is there something up with my project settings? Edited by - wing_majin on October 25, 2001 2:02:41 AM

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#2 Maximus   Members   -  Reputation: 124

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Posted 24 October 2001 - 07:03 PM

Those errors arent from including the libraries, rather the header files.

Make sure all the lines BEFORE you #include gl/gl.h are correct (ie not missing semi-colons, etc)

#3 wing_majin   Members   -  Reputation: 122

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Posted 24 October 2001 - 07:06 PM

Yeah I''m aware that it''s the file, and although it seems like those are common "human screw up" errors...
#include is the absolute first line in the file
so i figured it might have somethign to do with my settings somwhere im not sure

#4 baumep   Members   -  Reputation: 302

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Posted 24 October 2001 - 07:53 PM

If the #include ... is in the first line of your header files, maybe that's the cause for the errors. If your #includes are in a header file you wrote yourself, make sure you have an #ifndef ... #define ... #endif construct in your own header files.

Example:

// myheader.h
#ifndef _MYHEADER_H_
#define _MYHEADER_H_

#include <gl/gl.h>
#include <gl/glu.h>

... declarations ...

#endif // #ifndef _MYHEADER_H_
// end of myheader.h


baumep

Edited by - baumep on October 25, 2001 2:54:53 AM

#5 wing_majin   Members   -  Reputation: 122

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Posted 24 October 2001 - 08:52 PM

Thanks, but yeah, I know how to write and define classes and all that and im fairly aware of the whole linking process. However, I DO have all that there, but I require the GL in my implementation file "header.cpp", when I include that with a nicely defined class...it gives problems

#6 siaspete   Members   -  Reputation: 208

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Posted 24 October 2001 - 09:01 PM

You need to include windows.h before gl.h

- Pete

#7 Anonymous Poster_Anonymous Poster_*   Guests   -  Reputation:

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Posted 24 October 2001 - 09:50 PM

What happens is that WINGDIAPI class is undefined, so the when the complier sees
WINGDIAPI void APIENTRY glAccum (GLenum op, GLfloat value);
- the first function prototype in the header file, it doesn''t know what WINGDIAPI is, so you get the error '';'' missing before type ''void''

All you have to do is what siaspete said #include before #include and you''ll be fine.


#8 wing_majin   Members   -  Reputation: 122

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Posted 25 October 2001 - 06:17 AM

Thanks that did it. I figured it had something to do with definition here or there but I didn''t think it was that simple to fix




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