"Quicktime dependencies" . . . there could not be a 'problem' with these with Linux as Quicktime does not
work with Linux; it has been developed for Windows and Macintosh only.
Of course there could be a problem with this - it just means the compiler found a reference to QuickTime in the source code and couldn't find the QuickTime libraries.
Anyhow, once I had disabled all references to QuickTime and a few other parts in the HyperNext Studio source code then the compiler successfully built the HyperNext Studio app. HyperNext Studio then built a 'Hello World' app that ran fine on the Ubuntu distro. However without graphics it wasn't much use.
The problem was that the RealBasic compiler would only work on one version of Ubuntu. Of the other distros including a few Ubuntu and Debian distros, the compiler either failed to install or wouldn't run. Note, the HyperNext built 'Hello World' app wouldn't run on those Linux distros either. So my conclusion was to put HyperNext for Linux on the back burner but clearly its too much work for me so won't be developed.
As Apple are in the process of phasing out Quicktime HyperNext will have to, fairly quickly, stop being dependent
on Quicktime . . . so that is not really a valid excuse for not having a Linux version.
Apple haven't said they are going to discontinue QuickTime because there are a huge number developers and other users dependent upon on it. They have said it is 'deprecated'. No doubt QuickTime will be available on their website for many years to come just so Mac and Windows users can continue to use it.
What they are actually doing in changing the way video works in OS X. From the early 1990s onwards all versions of Mac Operating Systems came with QuickTime installed by default, except for this latest OS X - Yosemite. Yosemite has some thing called QuicktTime Player X - its not the previous Quicktime but something for 64bit video - there is lots of info on the web about it.
Anyhow, QuickTime is a free download from the Apple website and installs fine on Yosemite so 3rd party apps like HyperNext can continue to use it.