Bug#805666: guitarix: FTBFS: compile flags incompatiable with newer glibmm-2.4

[Hermann Meyer]

Hi

Please update guitarix to the latest release (0.34.0), that will fix 
this bug and #788564 
<https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=788564> as well.

regards
hermann
(guitarix upstream maintainer)