[mod_python] undefined symbol: apr_table_compress ??

I've just come across the problem defined below using mod_python
3.2.8. After some hunting around, it transpires that the problem is
that the installed APR has been stripped (we're using Red Hat) as
described very nicely at:

http://search.cpan.org/dist/mod_perl/docs/user/troubleshooting/troubleshooting.pod#undefined_symbol%3A_apr_table_compress

The attached patch to the 3.2.8 configure.in file seemed to catch the
error (autoconf needs to be run after applying this). After looking at

http://www.modpython.org/pipermail/mod_python/2006-February/020286.html

some better solution using apr-config might be better to ensure that
APR is as required.

Kind regards,

Homme.


> > I've downloaded mod_python 3.2.5b (Beta) and compiled it using
> >
> > ./configure --with-apxs=/usr/sbin/apxs --with-python=/usr/local/bin/ 
> > python2.3
> > make
> > make install
> >
> > just as the documentation says. But when I add LoadModule... to my
> > httpd.conf and restart Apache 2.0.46 I get the error message
> >
> > Cannot load /etc/httpd/modules/mod_python.so into server:
> > /etc/httpd/modules/mod_python.so: undefined symbol: apr_table_compress
> >
> > any ideas on how to fix this??
> >
> > Regards
> > Martin
> 
> Martin, did you ever sort this out? I appreciate no help was  
> forthcoming on
> the list. It doesn't seem to be anything we have specifically seen.  
> Thus, bar
> suggesting a rebuild of Apache and mod_python from scratch, probably
> nothing else anyone could think of to suggest.
> 
> Graham


-------------- next part --------------
--- configure.in
+++ configure.in
@@ -117,6 +117,15 @@
     AC_MSG_ERROR([This version of mod_python only works with Apache 2. The one you have seems to be $ver.])
   fi
 
+  # ensure the apr_* symbols can be read
+  AC_CHECK_LIB(apr-0, apr_table_compress, [], 
+  [
+    AC_MSG_ERROR([Apache Portable Runtime (apr) library not found. This may be due to one of:
+    - APR not being installed on the system
+    - The shared object (libapr-0) being stripped
+    - An installed APR that does not support the apr_table_compress() function])
+  ])
+  
   # determine LIBEXEC
   AC_MSG_CHECKING(for Apache libexec directory)
   LIBEXECDIR=`${APXS} -q LIBEXECDIR`