Incorrect OpenGL ES includes in libglfw3-dev

[Tuetuopay]

1. Release: Ubuntu 16.04 LTS (armhf)

2. Package version: 3.1.2-3

3. Expected: Application builds when specifying both GLFW_INCLUDE_ES3 and GLFW_INCLUDE_GLEXT

4. Happens: Build fails at preprocessor, stating that `GLES3/gl2ext.h` does not exists.

This bug only impacts applications making use of OpenGL ES.

The currently packaged GLFW 3 version is 3.1.2-3, which has incorrect includes. In `GLFW/glfw3.h`, specifying both to include the GLES 3.x headers and GLEXT headers, the file will attempt to include `GLES3/gl2ext.h` which does not exists. The correct path is `GLES2/gl2ext.h`.

The problem was fixed by the maintainer in release 3.2.1 in the following commit: https://github.com/glfw/glfw/commit/ca21a5c7b40310bab420818c827c986865dbbd0d

Attached is the patch from the above commit.

Thanks!

[James Cowgill (jcowgill)]

This is already fixed in 16.10 which has glfw 3.2.1.

[Sam (sam-rfc1149-deactivatedaccount)]

We are using a LTS (long term support) release because we do not want to upgrade to intermediate releases while still getting bug fixes. Isn't that the whole point of LTS releases of Ubuntu?

[James Cowgill (jcowgill)]

I don't think I said anything about 16.04. This bug may or may not get a fix there.

[kenn (whatnext)]

Bug still exists on Ubuntu 16.04.6. I simply opened the header file /usr/include/GLFW/glfw3.h and modified the corresponding lines according to patch.