There is nothing in the suttas that is “for” or “against” it if you talking about the orientation (besides vinaya rules for monks). “LGBT” as a social movement I would say do not bring that into Dhamma because making everything “LGBT” (like corporations do for money ie. greed) would cause more harm and ignorance just for the sake of “image”.
If you talking about people’s orientation my take is that the sense of pleasure for anything is the same inherently, if you carve from women it is no difference if you carve for the man same way whether you are heterosexual or homosexual or whatever in between it’s the same thing inherently. The other side is whatever societal impact it has, while often in Dhamma “things do not matter” in the sense that if you lust for black, pink, red or blue, or whatever color the mechanism behind is the same as the “outside” or societal structure may be different as it’s a lot of people with a variety of ignorance, gathi so this is where those things matter. Dhamma at its core has principles not related to this world, LGBT is related to this world and society so they do not work together on the same level.
Also, precepts are universal for every living being (those being spoken by Buddha) so it does not matter what kind of orientation you are but what person you are or what you trying to become, or unbecome in terms of Dhamma.