Re: [Discuss-gnuradio] Error messages when running gr_filter_design for gnuradio 4.7 on MacPorts

[Tom Rondeau]

On Tue, Feb 5, 2013 at 2:47 AM, Albert Chun-Chieh Huang <address@hidden> wrote:

Tom Rondeau <address@hidden> writes:

> On Mon, Feb 4, 2013 at 10:15 AM, Albert Chun-Chieh Huang <
> address@hidden> wrote:
>
>> Hi, all,
>>
>> I updated MacPorts to 2.1.3 just now and installed gnuradio-next by the
>> following command:
>>
>> $ sudo port install gnuradio-next +full configure.compiler=llvm-gcc-4.2
>>
>> When I tried to run gr_filter_design, it gave me this error message:
>> $ gr_filter_design
>> Please install PyQwt5 to run this script (http://pyqwt.sourceforge.net/)
>>
>> To execute it, I deactivate qwt forcefully by
>> $ sudo port -f deactivate qwt
>>
>> And then install PyQwt5 by:
>>
>> $ sudo port py27-pyqwt
>>
>> Then running gr_filter_design works perfectly! Good!
>>
>> Should gnuradio-next depends on PyQwt5 instead of qwt package?
>>
>> --
>> Albert Chun-Chieh Huang(黃俊傑)
>> Blog: Random Notes, http://alberthuang314.blogspot.com/
>
>
> Albert,
>
> No, you still need QWT for gr-qtgui. We also don't want to add PyQWT as a
> dependency since you don't require it to install anything. You need it for
> runtime on a few apps and examples, but as you saw, we catch that import
> error and provide a slightly nicer error message about what's going on. I
> don't like the idea of adding runtime dependencies to the compile time list
> of requirements. Having said that, we could check for runtime dependencies
> and not install apps that fail, but this wouldn't stop compilation. I
> haven't done that, yet, because it's a bit of a management nightmare to
> keep all of that tied together. I think the runtime error message about the
> missing Python component is sufficient.
>
> Tom

Hi, Tom,

Thanks for your reply. In the beginning, I thought gnuradio will also
work well with qwt 5.2.1 that comes with py27-pyqwt package. But I
tested it with QtGUI in gnuradio-companion, and it failed.

Now I get it. QtGUI in gnuradio-companion depends on QWT 5.1.2 and
gr_filter_design depends on PyQwt 5.2. So I try to install PyQwt 5.2 on
MacOSX without MacPorts. Now both gr_filter_design and QtGUI work fine
on my Mac.

GNU Radio 3.7 is really a huge jump for this project! Thank you all very
much!

--
Albert Chun-Chieh Huang(黃俊傑)
Blog: Random Notes, http://alberthuang314.blogspot.com/

I consistently run using Qwt 5.2 (actually version 5.2.2) on some of my machines. I normally try to run Qwt6, but I test against both. On my OSX machine, I only run Qwt6, though, so I'm not sure if there's some issue with 5.2.1/2 on that platform.

Tom