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

[Michael Dickens]

On Feb 4, 2013, at 11:37 AM, Tom Rondeau <address@hidden> wrote:
> On the other hand, PyQwt5 works in all cases I've tested against Qwt6. Qwt6, 
> though, is much nicer and has some significant performance benefits. So if 
> possible, use Qwt6 with PyQwt5.

Hi Tom - I'm wondering if you can clarify what you've written.

Last night I checked into MacPorts a big overhaul of the Qwt series, so we have 
qwt (5.1), qwt52 (5.2.3), qwt60 (replaces qwt-60; 6.0.2), and qwt-devel 
(6.1.rc3).

This morning I tried compiling PyQwt (5.2.0) using qwt52 and qwt60; the former 
works just fine but the latter fails because the API has changed (e.g., removal 
of qwt_array).

I tried installing "py27-pyqwt +qwt60" but that failed (again due to the API 
changes).  So while I -could- install "py27-pyqwt +qwt52" then force install 
qwt60 (over qwt52), the PyQwt python library will not be loadable because it's 
is linked to "libqwt.5.dylib" and not "libqwt.dylib".  I could hack the library 
requirement to be just "libqwt.dylib", but that seems a bit "extreme" and 
unwise for general use (e.g., in MacPorts).

Maybe I'm missing something?  Thanks for explaining. - MLD