OSMesa on MinGW64

[ghost]

I'm trying to statically compile GLFW and allow for a software rendering fallback. SDL provides SDL_CreateSoftwareRenderer, which works great. Now, I'm trying to do similar with GLFW.
As I understand GLFW's use of OSMesa allows to use Mesa to render Offscreen and then push that buffer to the GLFW Window.

1. Can GLFW be statically compiled to take OSMesa in?

2. MSYS2 provides a win32 wrapper for dlfcn, which is how I compiled GLFW in the first place. Using
   glfwWindowHint(GLFW_CONTEXT_CREATION_API , GLFW_OSMESA_CONTEXT_API); It doesn't seem to detect the provided osmesa.dll and errors out with OSMesa: Library not found (As I understand it, it shouldn't, as dlfcn wasn't made to work with .dlls in the first place). So am I using GLFW wrong here?

[nkindt]

related - #589