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Re: [Discuss-gnuradio] SWIG 1.3.31 now required on the trunk
From: |
Eric Blossom |
Subject: |
Re: [Discuss-gnuradio] SWIG 1.3.31 now required on the trunk |
Date: |
Fri, 1 Dec 2006 02:29:35 -0800 |
User-agent: |
Mutt/1.5.9i |
On Thu, Nov 30, 2006 at 06:22:30PM -0500, Lamar Owen wrote:
> On Thursday 30 November 2006 18:01, Eric Blossom wrote:
> > We've decided to require SWIG 1.3.31 to compile the trunk.
>
> Really. This makes support on anything older than bleeding edge very
> difficult.
No, not very difficult. You do have to download and build SWIG 1.3.31.
> > We try to avoid upping the mininum rev level of any our dependencies,
> > but this one's required for proper support of SWIG "directors".
>
> What do 'directors' do that GNUradio has to have? In other words, why the
> need? Just curious.
They:
(1) allow Python to subclass C++ base classes with virtual functions,
(2) allow C++ code to transparently invoke Python code
This is used in gr_bin_statistics_f.{h,cc} and usrp_spectrum_sense.py
to allow C++ code to fire callbacks written in Python or C++.
See http://www.swig.org/Doc1.3/Python.html#directors for more info.
> > Sorry for any inconvenience this may bring.
>
> Sorry for sounding less than thrilled at the thought of having to go back to
> the bad old days of multiple SWIG versions (thought I was over that once I
> got up to Fedora Core 5 from CentOS 4). It could be more than just an
> inconvenience to some (depending upon how old their distribution is), and
> that's why I'm curious why it has to be 1.3.But again, I'm just curious, as I
> didn't see much discussion on the list prior to this (or I'm just blind to
> the messages, one).
The problems that David Reed and others were seeing are fixed by using
SWIG 1.3.31. It is also required if anyone wants to use Python 2.5.
>From the SWIG README:
What's New?
===========
SWIG-1.3.31 summary:
- Python modern classes regression fix
SWIG-1.3.30 summary:
- Python-2.5 support
- New language module: R
- Director support added for C#
- Numerous director fixes and improvements
- Improved mingw/msys support
- Better constants support in Guile and chicken modules
- Support for generating PHP5 class wrappers
- Important Java premature garbage collection fix
- Minor improvements/fixes in cffi, php, allegrocl, perl, chicken, lua,
ruby,
ocaml, python, java, c# and guile language modules
- Many many other bug fixes
Eric
- Re: [Discuss-gnuradio] SWIG 1.3.31 now required on the trunk,
Eric Blossom <=