Gstreamer-0.10 development package not found

I am trying to build the Flowplayer package on Sailfish SDK, but I get the error as per the title of this question.

How do I install this package to SDK?

Hasnt gst 0.10 been deprecated -read no support- from upstream and jolla since a few years??

I’ll take your word for that my friend, I have absolutely no idea. Perhaps I will leave a message for the dev instead.

Correct, although the Jolla 1 notably never got the update to 1.0.