Re: totally confused by versioning system of libtool...

[Peter O'Gorman]

Bill Northcott wrote:

> I have so far only found one GNU libtool packages which correctly  
> versions its libraries on MacOS X.  This is R and they seem to do it  
> with code in Makefile.in which overrides the libtool versioning. 

Looks like R builds a framework on darwin and uses install_name_tool to 
encode the full path, as the library's install_name (soname), so the library 
ends up being something like:
install_name /Library/Frameworks/R.framework/Versions/2/Resources/lib/lib
compatibility_version 2
current_version 2.1

Please read the libtool versioning information, man 1 ld, and 
<http://developer.apple.com/documentation/DeveloperTools/Conceptual/MachOTopics/Articles/loading_code.html> 
(alternatively <http://tinyurl.com/a376e>).

Peter
--
Peter O'Gorman - http://www.pogma.com