On 6 August 2010 07:24, Mach5 <[email protected]> wrote:
> So, here is the breakdown of what happened so far, after I decided to
> migrate to mod_wsgi from mod_python.  My server is running CentOS 5.5
> 64bit with apache 2.2 (from yum) and Python 2.5.4 (compiled from
> source with --enable-shared, prefixed /usr/local).
>
> I first downloaded the source and compiled mod_wsgi, with no major
> problems (just some thrown warnings at compile time).  I edited my
> httpd.conf and added appropriate LoadModule and WSGIScriptAlias
> statements, and added a django.wsgi, etc, etc.  When I went to restart
> apache, I got this:
>
> httpd: Syntax error on line 31 of /etc/httpd/conf/httpd.conf: Cannot
> load /etc/httpd/modules/mod_wsgi.so into server: /usr/local/lib/
> libpython2.5.so.1.0: undefined symbol: emacs_meta_keymap
>
> Emacs? WTF?  After some grepping and discussing, I realized the
> problem lied in the readline library, which I need because the python
> interpreter is unusable without it.  I went ahead, got the source for
> Python 2.5.5, commented out references to emacs_meta_key (around line
> 707 in readline.c), and built and installed it.  I did a make clean/
> distclean, recompiled without options, and again --with-python and --
> with-apxs manually set, and both times I get the following:
>
> httpd: Syntax error on line 31 of /etc/httpd/conf/httpd.conf: Cannot
> load /etc/httpd/modules/mod_wsgi.so into server: /usr/local/lib/
> libpython2.5.so.1.0: undefined symbol: rl_instream
>
> Now yet another error referring to readline.  I have never seen these
> type of errors before.  The python interpreter still works fine.  Has
> anyone else ran into this issue, or does anyone have any insight?

Run:

  ldd mod_wsgi.so

  ldd /usr/local/lib/python2.5/lib-dynload/readline.so

  env | grep LD_LIBRARY_PATH

Your mod_wsgi is likely picking up Python and/or readline from wrong place.

Ie., you have multiple installations of each, but still using that in /usr/lib.

Confirm what might be getting used by running above ldd and env
commands and posting output.

Graham

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