[mod_python] Which mod_python & apache versions

Jason Fritcher fritcher at corp.earthlink.net
Wed Jun 14 23:54:48 EDT 2006

Graham Dumpleton wrote:
> It all actually depends on what version of Apache Runtime libraries are
> being used.
> It is possible that the older version of APR which had these things is
> being used
> when code is compiled, but that probably have required you to say to use
> the older
> version of APR, plus I would have thought newer Apache would have
> required the
> newer version to work. Strange???

I just finished some digging and testing, and the lazy linking was correct. Apache is linking against the 1.0 version of APR, but OS X is not binding symbols until the first time each function is called. I've never attempted to lookup the (local|remote)_addr attributes on the connection object, so I never triggered a call to makesockaddr() and the resultant apr_sockaddr_get_port() call. I hacked the hello world example to retrieve that attribute, and the apache child process bombed and was killed. Error log excerpt and test script below.

from mod_python import apache

def handler(req):

    apache.log_error('req.connection.local_addr = %s' % req.connection.local_addr);
    req.content_type = "text/plain"
    req.write("Hello World!")

    return apache.OK

[Wed Jun 14 23:41:19 2006] [notice] mod_python: (Re)importing module 'hello'
dyld: lazy symbol binding failed: Symbol not found: _apr_sockaddr_port_get
  Referenced from: /Users/jkf/apache2/modules/mod_python.so
  Expected in: flat namespace

dyld: Symbol not found: _apr_sockaddr_port_get
  Referenced from: /Users/jkf/apache2/modules/mod_python.so
  Expected in: flat namespace

Jason Fritcher
Software Engineer
Core Infrastructure Services & Strategy
Earthlink, Inc
fritcher at corp.earthlink.net
(404) 748-7262, x22262

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