[Scottish] SVGAlib

Graeme Mathieson scottish at mailman.lug.org.uk
Fri Nov 15 11:56:01 2002

On Thu, Nov 14, 2002 at 11:19:44PM +0000, Mark Marsella wrote:
> Might be, but normally new old libs are subsets of new and so function.  
> (unless of course they have been totally rewritten). 

No.  Not if they are doing soname versioning correctly.  If the new
version is ABI-compatible with the old version, you only bump the minor
version.  If it's ABI-incompatible (stuff needs to be rebuilt against
the new version of the library), you bump the major version number.

Of course, doing the symlinking thing *might* work for you if the
application uses a subset of the library's interface which hasn't
changed or if the developers are randomly bumping the major number for
no reason.  But it *is* dangerous.  Particularly with applications
linked against svgalib which, iirc, have to be suid root to run

A quick Google search turns up this paper which almost certainly
explains it better than I do:

Right now, there are scr1pt k1dd13s plotting to DDoS my network, my co-lo
server is not responding  to pings and  the people that I IRC with may be
involved in both.  I'm  sysadmin Graeme Mathieson and this is the longest
day of my life.                       http://www.wossname.org.uk/~mathie/