Re: Help on linking?

I got a little farther. Although the documentation looks like
--library-path and -L should be synonyms, it seems like they aren't.
With -L I do find the libraries for Python 3. But then when I try to
run Visual, "import cvisual" fails because there's a search for
libboost_python in /usr/libs which finds a version for Python 2.6,
even if I've copied the Python 3 libraries to /usr/libs. The
fundamental problem is that I don't see how to use distinctive names
for the Python 3 libraries, such as "libboost3_python" instead of
"libboost_python".

I also tried ld -static and produced a large static library. But
"import cvisual" is apparently unable to deal with a static library on
Ubuntu.

Bruce Sherwood

On Sun, Dec 26, 2010 at 10:17 PM, Bruce Sherwood
<[email protected]> wrote:
> I'm trying to build Visual on Ubuntu (10.10) for Python 3.1, where the
> standard Python is Python 2.6, and the Boost 1.42 libraries are
> installed for this version of Python.
>
> I've built the Boost 1.43 libraries for Python 3.1 and placed in my
> own space the Boost folder of include files and, in a folder beside
> the include files, the boost_python, boost_signals, and boost_thread
> libraries. I altered the make file to specify linking these libraries
> from my own directory rather than from the standard locations, as
> follows:
>
> ld ..... --library-path=mylibs -lboost_python -lboost_signals
> -lboost_thread ....
>
> What happens when I build looks like I'm linking against the
> Ubuntu-installed libraries for Python 2.6, because when I try to run
> Visual, I get an import error referring to
> /usr/lib/libboost_python-py2.6.so.1.42.0, which is of course missing a
> needed symbol.
>
> Can anyone shed any light on this? Thanks.
>
> Bruce Sherwood
>

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