I got a Opengl example contain “#include <gl/image.h>”.
I’m using RedHat Linux 9.0. and how I can install this header.

Have you tried commenting out the #include line first? It might not be necessary to include it at all (all needed definitions might be in your gl.h file). Otherwise I doubt that just finding and installing the header file is going to help you.

You’ll surely need to find it (it’s surely in the same package than your demo) if you want image to be loaded and seen (without forgetting the source or the mathing library file).

That isn’t a standard OpenGL header, so it isn’t likely that anyone here will be able to tell you where to get it, or what it contains without more information.

Where did you get the sample code from? Maybe that sample code has a description of how to use it that you can read.

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