[Development] can not build 5.9.1 qtmultimedia

[Kevin Kofler]

Thiago Macieira wrote:
> No, this is the solution, unless you want to build in a chroot'ed build
> root. In the environment where you're going to build a given software, you
> must not have the development packages of that software already installed.

That is utter nonsense. Any package that picks up headers or library 
symlinks from the old installed version instead of from the one you are 
currently building is buggy.

        Kevin Kofler