Re: [xml] Compilation error

On Thu, Jul 26, 2007 at 11:03:08AM -0400, Daniel Veillard wrote:
On Thu, Jul 26, 2007 at 04:02:48PM +0200, Marco Spinetti wrote:
I don't know if this versioning problem is a good news or not.
For example RHEL 3 has python 2.2.3: so I suppose that it's no possibile 
to use tha last versions of libxslt.
It's a bad news.

  The *only* solution to avoid this kind of problem is to not code
anymore on libxml2 or libxslt. If you really want to backport, then
do it, but as I said it does take time and expertise, running old systems
is NOT CHEAP. The way you can do this is the following, go back to 
the diffs between 2.6.16 and 2.6.17, find the enhancement of libxml2
and libxslt which added support for booleans in XPath from python. 
Get a revert patch, use that patch on recent release, do the QA to
make sure this doesn't break other libxml2 python apps (like for example
RHEL installer) and then keep your forked version.

  Actually, once you have a revert patch it should be possible to 
make the code section conditional on Py_Bool being defined (or something
similar) which would allow compilation in degraded mode on older versions
and normal support with recent ones without carrying the patch separately.
Such a patch could be added to the main code base.


Red Hat Virtualization group
Daniel Veillard      | virtualization library
veillard redhat com  | libxml GNOME XML XSLT toolkit | Rpmfind RPM search engine

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