[Plplot-devel] Set the libplplotada_SOVERSION on the CMake command line

[Rafael L. <ra...@la...>]

Dear PLplot developers,

Please find here attached a patch developed by Nicolas Boulenguez that we 
are currently applying to the Debian package.  The patches regards the 
setting of the libplplotada's shared object version.

Here is the description of the patch, as written by Nicolas:

“The SOVersion sometimes needs to evolve independently of the API (and 
thus, is unrelated with semantic versioning), or even without 
knowledge by the upstream author.  For example, a rebuild of the 
library with a different compiler may break its ABI.

This patch provides redistributors like Debian an easy way to set the 
libplplotada_SOVERSION on the CMake command line, without patching 
CMake files.

This patch only affects the Ada library, but the suggestion applies 
to any language allowing dynamic linking.

As far as I know, the part added by _VERSION and the related symbolic 
links are a complexity added by CMake (probably in order to follow 
the GNU libtool conventions), but the linker only cares about the 
SOVERSION.”

Please consider applying this patch to PLplot.

Best regards,

Rafael Laboissière