[mod_python] undefined symbol: forkpty

On 04/08/07, Graham Dumpleton <graham.dumpleton at gmail.com> wrote:
> In the same directory as the Apache httpd binary there is a file
> called envvars. In that file add:
>
>   LD_PRELOAD=/usr/lib/libutil.so
>   export LD_PRELOAD
>
> Alternatively, after having run 'configure' on mod_python source code,
> modify src/Makefile and add '-lutil' into the LDFLAGS definition. Then
> compile mod_python and install as per normal.

By rights should actually be added to LIBS not LDFLAGS, but probably
would still have worked anyway. :-)

> Graham
>
> On 04/08/07, Justin Wickett <justin.wickett at duke.edu> wrote:
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> > Hi Graham,
> >
> > I am having the exact same problem with my FC7 image that Gustavo
> > Steigert mentioned. I used 'yum' to download and install the HTTPD
> > RPM (version 2.2.4-4.1.fc7) as well as the HTTPD-devel RPM, so I
> > didn't compile anything myself. I did however compile mod_python
> > 3.3.1. When I went to start up Apache, I received:
> >
> > Starting httpd: httpd: Syntax error on line 209 of /etc/httpd/conf/
> > httpd.conf: Syntax error on line 6 of /etc/httpd/conf.d/python.conf:
> > Cannot load /usr/lib/httpd/modules/mod_python.so into server: /usr/
> > lib/httpd/modules/mod_python.so: undefined symbol: forkpty
> >
> > Here is some info about my libutil.a...
> >
> > - -bash-3.2# nm /usr/lib/libutil.a | grep forkpty
> > forkpty.o:
> > 00000000 T forkpty
> >
> > Because I was not the one who compiled Apache,  I don't think there
> > is a way to link it at this point. Do you (or anyone else) have any
> > advice as to how to fix this problem? Should I compile Apache and
> > link the library then? Thanks in advance...
> >
> > Justin Wickett
> > Duke 2010
> > http://www.duke.edu/~jyw2
> >
> >
> >
> > On Jul 29, 2007, at 4:13 AM, Graham Dumpleton wrote:
> >
> > > On 28/07/07, Gustavo Steigert <steigert at gmail.com> wrote:
> > >> Hi guys,
> > >>
> > >> I installed Apache2 (from source) and it worked fine. Then I
> > >> installed
> > >> mod_python (also from source) and no error was shown; after, I
> > >> configured
> > >> the httpd.conf for loading mod_python, and now when I try to start
> > >> apache,
> > >> it says:
> > >>
> > >>  httpd: Syntax error on line 54 of
> > >> /usr/local/apache2/conf/httpd.conf: Cannot load
> > >> /usr/local/apache2/modules/mod_python.so into server:
> > >> /usr/local/apache2/modules/mod_python.so: undefined symbol:
> > >> forkpty
> > >>
> > >> Version information:
> > >>
> > >> httpd 2.2.4
> > >> mod_python 3.3.1
> > >> fedora 7Can anyone please help?
> > >
> > > The forkpty function isn't even used by mod_python, although it is
> > > used in the Python 'posix' module which would probably be
> > > automatically loaded by Python at startup.
> > >
> > > What I would suggest is the problem is that whatever system library
> > > defines that function isn't being linked into Apache when it is being
> > > built.
> > >
> > > First step would thus be to find out which system library contains
> > > that function. To do this, run 'nm' on each of the system libraries in
> > > /usr/lib until you find it. On Linux box I have access to the library
> > > is libutil.
> > >
> > > $ nm libutil.a | grep forkpty
> > > forkpty.o:
> > > 00000000 T forkpty
> > >
> > > Make sure this library is linked into Apache, preferably as a shared
> > > library as Apache itself may not require the function and wouldn't
> > > link it in if libutil is a static library.
> > >
> > > Graham
> > > _______________________________________________
> > > Mod_python mailing list
> > > Mod_python at modpython.org
> > > http://mailman.modpython.org/mailman/listinfo/mod_python
> >
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>