Thread: libpq.so

I suppose this is actually an OpenGroupware question, but nothing
at that site seems to adequately address the issue.

I run Debian, and it kind of looks like the debs at ogo.org are
set for stable and I run unstable.  So, it really didn't surprise
me when I see errors about not being able to find libpq.so.2.  The
libpq on my machine is libpq.so.3; it being more up to date.

The most verbose solution I've seen, is to "copy" libpq.so.3 to
libpq.so.2 so that ogo will find a libpq.so library.  I would
guess a symbolic link would actually be better, but the question I
have is:
 Do all of the functions common to libpq.so in version 2 and 3
 have the same parameters?
If not, I think this suggestion is nonsense, and I might as well
just download source and compile it and give up on the debs at
ogo.

Thanks,
Gord

<ghaverla@freenet.edmonton.ab.ca> writes:
> The most verbose solution I've seen, is to "copy" libpq.so.3 to
> libpq.so.2 so that ogo will find a libpq.so library.  I would
> guess a symbolic link would actually be better, but the question I
> have is:
>  Do all of the functions common to libpq.so in version 2 and 3
>  have the same parameters?

There are some incompatibilities (which is why we changed the major
version number).  As best I recall at the moment, the incompatibilities
would only affect applications that use LISTEN/NOTIFY, which not many
do.  So the above would probably work, but it's not certain.

            regards, tom lane

On Fri, 18 Jun 2004, Tom Lane wrote:
> <ghaverla@freenet.edmonton.ab.ca> writes:

> > The most verbose solution I've seen, is to "copy" libpq.so.3 to
> > libpq.so.2 so that ogo will find a libpq.so library.  I would
> > guess a symbolic link would actually be better, but the question I
> > have is:
> >  Do all of the functions common to libpq.so in version 2 and 3
> >  have the same parameters?
>
> There are some incompatibilities (which is why we changed the major
> version number).  As best I recall at the moment, the incompatibilities
> would only affect applications that use LISTEN/NOTIFY, which not many
> do.  So the above would probably work, but it's not certain.

Yeah, I was kind of expecting some incompatibilities between
different major version numbers.  Which is why this advice on the
OpenGroupware forums seemed so strange.  But, I did set up the
symlink (libpq.so.2 -> libpq.so.3), and Open Groupware does at
least start.  I guess I'll exercise it a bit to see if anything
crashes it.

Gord