Re: Help with GR-Inspector

Hello Pierre,

you already got everything right:

- gr-inspector for GNU Radio 3.7 requires Qt4

- gr-inspector for GNU Radio 3.8 requires Qt5

So there should be no problem in using Qt4 for your case. In particular, gr-qtgui for GNU Radio 3.7 is using Qt4, not Qt5 [1].

Can you tell me the following:

1. How did you install GNU Radio 3.7?
2. Why can't you install Qt4 and Qt5 libs simultaneously?
3. Why do you consider "downgrading" (I guess you mean removing Qt5 completely) dangerous for you?

[1] https://github.com/gnuradio/gnuradio/blob/maint-3.7/gr-qtgui/CMakeLists.txt#L25

Mit freundlichen Grüßen/Kind regards

Sebastian Müller

On Jun 3 2020, at 8:25 pm, pierregalant@mailo.com wrote:

Hello,

I need your help. I want to install GR-inspector for Gnuradio 3.7 on Pentoo linux (Gentoo distribution). However, when installing GR-inspector, I have the following error:

 Found unsuitable Qt version "5.11.3" from /usr/bin/qmake, this code

  requires Qt 4.x

I have already search on the internet, the only possible way (if I do an analogy with someone having the same issue) would be to port the make file of GR-inspector for Gnuradio 3.7 to Qt5.

I cannot downgrade from GT5 to GT4 (as it is apparently impossible/dangerous) and I have to use Gnuradio 3.7 because I want to use GR-inspector with blocks that are only compatible using Gnuradio 3.7.

Can anyone help me ? I would not know how to write a patch to port GR-inspector for Gnuradio 3.7 on GT5.

Kind regards,

Pierre Galant