Hi x42
I've already received mixbus v4 as a donation from ufug, many thanks man!
And, I believe that I found the issue already. Seems to be the old annoying fftw3 issue in Pan create. At least, the issue didn't exists, when guitarix is build with the --convolver-ffmpeg flag to use ffmpeg instead fftw3.
This is the recommended way to build guitarix since some years now, bye the way.
But, beside that, there are truly some issues , which leads to:
suil error: Unable to open UI library /usr/lib/lv2/gx_amp.lv2/gx_amp_gui.so (/usr/lib/lv2/gx_amp.lv2/gx_amp_gui.so: undefined symbol: _ZN4Glib7ustringaSEONSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE)
but that leads only to, that the GUI wont load, it's possible to use the generic interface.
mixbus version is:
Mixbus4.0.151 (built using 4.0-151-g647653d and GCC version 5.2.1 20151028)
Which gtk/gtkmm version is used to build mixbus v4?
Maybe I'll push a compatible binary to sourceforge.
As a side note, there are no problems with the GxPlugins from my github repository, which comes with a plain GTK UI.
So, it seems like a compile flag issues, -std=c++11 is used standard wise with in guitarix, or it is a GTKmm version issue.
And while we are one it, the most annoying thing for me was, that mixbus wont start at all in the first try. I've installed the gtk-clearlooks engine and endless output from the following:
(mixbus-4.0.151:8495): Gtk-WARNING **: Unable to locate theme engine in module_path: "adwaita",
/usr/share/themes/Clearlooks/gtk-2.0/gtkrc:77: error: unexpected identifier 'reliefstyle', expected character '}'
That is, really, really bad. I need to remove the gtk-engine package in order to get mixbus started.
When ardour/mixbus relay on a old, outdated version of clearlooks-engine, and brings it own engine with anyway, isn't it possible to rename the engine and it's symbols (make it ardour-engine or such) to avoid a conflict with a otherwise installed upstream version.
For example guitarix, needs the orginal clearlooks engine.
All this is on debian/sid with gcc version 6.3.0 20170221
regards
hermann