unable to use original GLFW library.

[ykne]

Function glfwSetRoot does not appear in glfw.org documentation, API section, GLFW header files and in gflw source code, however it is present in external/linux/x64/libglfw3.a
What is it?

[lieff]

I think this function is to address glfw/glfw#1094
glfw creates windows using _glfw.x11.root root, and no way to set parent. So, it must be something like:

void glfwSetRoot(Window root)
{
    _glfw.x11.root = root;
}

may be it's one of forks.

[ykne]

Thanks for the hint. It is a pity that developers did not provide modified source as required by Open Source ideology...
@lieff even more, glfw3.h is not available so code does not compile unless system glfw development package is installed.

external]$ find . -name '*glfw*'
./linux/x64/libglfw3.a
./linux/libglfw3.a