SDL_GL_GetProcAddress equivalent

Hi,
i am trying to use libmpv with OF, with GL callbacks.
MPV needs to be initiated with a function equivalent to SDL_GL_GetProcAddress (https://wiki.libsdl.org/SDL_GL_GetProcAddress)

It also exist in QT thru
QOpenGLContext::currentContext()->getProcAddress
(http://doc.qt.io/qt-5/qopenglcontext.html#getProcAddress)

it seems to be a util function to obtain a pointer to a named OpenGL function…
any idea if something similar exists in OF ?

Thanks !

Answering my own question:
eglGetProcAddress(name) does it,
but on RPi it doesn’t respond with cores function,
so falling back to dlsym(RTLD_DEFAULT, name); seems to work on C
but i can not make it works on OF, i don’t know why.
Investigating…