Help getting BLT extension working with python/tkinter on linux
bobt at rubble.com
Tue Jun 17 08:05:38 CEST 2003
As a followup to my own post:
In article <20030616.143151.1261034869.8390 at hp.rubble.com>, I wrote:
> I'm confused about how to get the BLT package configured and working on
> linux. Here's my situation:
> I have ActivePython installed, version 2.2. This includes tkinter and
> some other extensions, but since it doesn't have a complete tcl/tk
> installation I couldn't build other extensions against it. So I
> downloaded ActiveTCL, version 18.104.22.168 I believe (it has the same
> versions of tcl/tk as the ActivePython).
> . . .
> . . .
> but I can't get this extension to load manually:
> TclError: couldn't load file "/usr/local/ActiveTcl/lib/libBLT24.so":
> /usr/local/ActiveTcl/lib/libBLT24.so: undefined symbol: TclpAlloc
> This tells me that the BLT extension was found ok, but the actual
> dynamic loading of the library failed because it couldn't find the
> symbol symbol?.
> That's a basic allocation routine in the tcl library, libtcl8.3.so. This
> symbol is found in python2.2/lib-dynload/_tkinter.so, so why can't the
> blt library find it?
I downloaded python src distro from python.org and built it. I modified
Modules/Setup to include both tkinter and BLT, and specified the
existing versions I had in the ActiveTcl installation. It all works fine.
This build of python must have tkinter built in, as there is no _tkinter.so
to be found in the hierarchy.
So anyway, I'm all set, but I would still like to understand why the other
installation wasn't working. Why couldn't the loading of BLT find
the TclpAlloc symbol?
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