libmagick, libmagick++ soname confusion
tag 224287 pending
Here is my analysis of bug #224287:
autotrace 0.31.1-2 was built against libmagick++5.5.7 version
which 4:18.104.22.168-1 provided libMagick++.so.0.
Two days ago, libmagick++5.5.7 version 4:22.214.171.124-1 entered the
archive. It provides libMagick++.so.6 instead. This caused the
autotrace binary from 0.31.1-2 to refuse to start.
The bug against autotrace can be fixed by recompiling (just as the
reporter suggested, in fact). I will bump the Debian revision to
provoke recompiles shortly.
For debian-devel: I supposed it was a bug in imagemagick 126.96.36.199.9-1
that it provided libraries with the wrong sonames . However, now
that the sonames are correct, shouldn't
/var/lib/dpkg/info/libmagick++5.5.7.shlibs declare a *versioned*
dependency, such that people will not try to use a freshly built (say)
autotrace with 4:188.8.131.52-1, which does not provide .so.6?
I'm new to this shlibs business, so I'm not filing a bug against
libmagick++5.5.7 right away. Should I? And if I should, should I wait
until a fixed libmagick package is in the archive before I reupload
autotrace? Or should I hack autotrace's control file such that it
conflicts agains old versiond of libmagick?
 but the Debian changelog does not mention the change, so it may be
that there's still a bug in its build scripts that causes the
sonames to be wrong *sometimes*?
Henning Makholm "The practical reason for continuing our
system is the same as the practical reason
for continuing anything: It works satisfactorily."