Yes, you need JACK's development (header) files to be installed. Which is usally available as package named "libjack-dev" on most distributions.Torte wrote:Do I have to install a specific JACK-package before I build the LS-packages? Or how can I compile LS with Jack support? Sorry, I don't know much about these things. I'm just an enduser.
And like I said, when you run linuxsampler's configure script, check the summary output of linuxsampler's configure script whether it found JACK and compiles the sampler with JACK support.
I don't get your question. What is the problem you have with Qt?Torte wrote:Also a question to qsampler GUI. ./configure says that I need the latest qt5 package. I installed the qt5-default package. It was accepted, but then I have the complete QT-Application on my computer. Which package of qt5 can I use instead?