On March 31, 2014 10:58:28 AM Mathieu Malaterre wrote: > Package: libvtk6 > > Clearly there is something missing here. libvtk6 can be co-installed > with libvtk5.8. VTK API (ABI too) is completely incompatible in > between those two versions.
Clearly I'm missing something, because it is routine to have different-SONAME
versions of a library co-installable. That is largely the point of having the
SOVERSION in the package name.
> Typical scenarios that should not happen is an app linked against
> vtkCommon and vtkCommonCore.
These have the SOVERSION correctly set in the library, don't they? The 5.8
libraries do
steve@riemann{~}objdump -p /usr/lib/libvtkCommon.so.5.8.0|grep SON
SONAME libvtkCommon.so.5.8
and while I don't have 6.0 installed, the list of files shows the library names
all end with ".so.6.0".
Any application will contain within it a list of the SONAMES required, so
there is no confusion if both libvtkCommon.so.5.8 and libvtkCommon.so.6.0 are
present on the system.
> This gets even worst with python
>
> $ python
> import vtkCommon
> import vtkCommonCore
Well, this is a problem in that the python scripts don't or can't declare
which version of VTK API they conform to. I presume the trouble is that
"import vtkCommon" brings in a different API on 5.8 v.s. 6.0. If so, that is a
still a problem even if the two packages conflict: I may write a script for the
5.8 API, then upgrade to VTK 6 (removing VTK 5.8) and the script is broken.
-Steve
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