[CMake] Mostly O.T. Need advice on Mac OS X compatibility version for libraries

[Alan W. Irwin]

On 2008-04-02 20:08-0700 E. Wing wrote:

> This seems familiar. I remember a long discussion on this somewhere.
> It must have been offlist. I forgot the outcome. Were we going to
> introduce a different versioning variable separate from SOVERSION?

You may be referring to VERSION.  To give a specific example, we use

set(csirocsa_SOVERSION 0)
set(csirocsa_VERSION ${csirocsa_SOVERSION}.0.1)

and

SET_TARGET_PROPERTIES(csirocsa PROPERTIES SOVERSION ${csirocsa_SOVERSION}
VERSION ${csirocsa_VERSION}) for one of our libraries which our core library
depends upon.

So we set the major portion of the VERSION triplet be consistent with
SOVERSION.  That works fine on Linux, but
I am not really sure whether it is SOVERSION or VERSION (or
both) that affects the resulting compatibility version on Mac OS X.

Can somebody at least comment on the relationship between VERSION and/or
SOVERSION from CMake and the resulting compatibility version on Mac OS X? Of
course, if that person has more to say about why the major portion of that
compatibility version should not be zero on that platform, that would be
great as well.

Alan
__________________________
Alan W. Irwin

Astronomical research affiliation with Department of Physics and Astronomy,
University of Victoria (astrowww.phys.uvic.ca).

Programming affiliations with the FreeEOS equation-of-state implementation
for stellar interiors (freeeos.sf.net); PLplot scientific plotting software
package (plplot.org); the libLASi project (unifont.org/lasi); the Loads of
Linux Links project (loll.sf.net); and the Linux Brochure Project
(lbproject.sf.net).
__________________________

Linux-powered Science
__________________________