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      Hello guys, 
       
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    • By Jens Eckervogt
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      Thanks!
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OpenGL <OpenGL/gl.h> Include Failing

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I've installed XCode and opened it once.
The command-line tools are also installed.

The linker flag `-framework OpenGL` is present under `Additional options` in the linker settings.

Under `Additional Library Directories` in the linker settings, I have added `/System/Library/Frameworks`.

The linker and C++ compiler are `g++`. The C compiler is `gcc`.

My OS X version is 10.11 (El Capitan).

I have included the headers below.

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

 However, the headers still do not resolve.

 

If I do the same for SDL2, <SDL2/sdl.h> DOES resolve but <SDL2/SDL_opengl.h> has an unresolved include in it, which is <OpenGL/gl.h>

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It is not exactly clear to me what build system you are using. It is Xcode itself? If yes, then adding "/System/Library/Frameworks/" should not be needed.

 

However, the frameworks therein are runtime components. The headers are development components - the are not bundled with the runtime components. Instead, they are bundled with the SDKs. For example, the SDK for Mac OS X 10.9 brings such headers

 

Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/System/Library/Frameworks/OpenGL.framework/Versions/A/Headers/gl.h

Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/System/Library/Frameworks/OpenGL.framework/Versions/A/Headers/gl3.h

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It is not exactly clear to me what build system you are using. It is Xcode itself? If yes, then adding "/System/Library/Frameworks/" should not be needed.

 

However, the frameworks therein are runtime components. The headers are development components - the are not bundled with the runtime components. Instead, they are bundled with the SDKs. For example, the SDK for Mac OS X 10.9 brings such headers

 

Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/System/Library/Frameworks/OpenGL.framework/Versions/A/Headers/gl.h

Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/System/Library/Frameworks/OpenGL.framework/Versions/A/Headers/gl3.h

 

Oh, I managed to forget the most important detail.

 

I'm using Netbeans 8.1 (C++), with the g++/gcc linkers/compilers.

 

Should I add that path instead?

Edit: searched for OpenGL.framework inside the XCode package and it doesn't exist

Edited by Lolums

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Unless you are working on a very old GPU or onboard GPU then you are not recommendet to use the GL headers rather than using some wrapper Library (GLFW) or writing your own one because in every profile from 3.2 and above you are binding for extension functions and use just a few build in ones you could directly link to. You also might need to set config in SDL correctly if there are unresolved errors with the right platform tag (that might not be set by default in your compiling unit)

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Edit: searched for OpenGL.framework inside the XCode package and it doesn't exist

 

Do you have any SDK installed?

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