[Python-Dev] Building against system expat

Georg Brandl g.brandl at gmx.net
Wed Apr 25 21:24:33 CEST 2012

On 25.04.2012 20:44, Georg Brandl wrote:
> On 25.04.2012 15:42, Bohuslav Kabrda wrote:
>> Hi, I'm trying to build Python 3.2.3 against system expat library, that lies
>> out of the ordinary directory structure (under /opt). I also have an older
>> version of expat library in the system. No matter what shell variables or
>> options I pass to configure and make, pyexpat gets linked against the system
>> expat, which results in errors during tests:
>> pyexpat.cpython-32dmu.so: undefined symbol: XML_SetHashSalt
>> anyone has any idea what to pass to configure/make to link pyexpat with the
>> other expat?
> You'll have to upgrade your expat.  The XML_SetHashSalt is new in 2.1.0 and
> makes it possible to avoid an algorithmic complexity attack; Python uses it
> in its newest bugfix releases.  See for example <http://bugs.python.org/issue14234>.

Sorry, I think I misread your request.  Please ignore the reply.


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