Question about SDL and opengl in psp

Hi there.
Well, i'm kinda new with PSP programming, although i have previously programmed for dreamcast and gameboy.

I have finally set my toolchain up and running( there are quite lot of threads which solve wach of the problems you may encounter xD)
Anyway.
Now that i have set everything, and works. I have some doubts about SDL.
I have used SDL in most of my projects(on PC, DC, etc).
But after reading some tutorials about PSP programming, i found i have add "special" code to each of my programs.
My question is. Does SDL add all this "special" code automatically, or do i have to add it manually.
And by the way, what kind of support does the psplibraries have for OpenGL?
can i use it like KGL?
Well that's it. If anyone can clarify this for me i would bevery thankful.