On Sat, May 2, 2015 at 3:30 PM, Lawrence Velázquez <[email protected]> wrote: > On May 2, 2015, at 9:05 AM, Ryan Schmidt <[email protected]> wrote: > >> But it's not totally clear to me what proper library versioning entails -- >> what specifically I should be telling the developers of those projects to do >> instead. There are too many different version numbers. For example: >> >> >> $ port installed gettext >> The following ports are currently installed: >> gettext @0.19.4_0+universal (active) >> >> $ otool -L /opt/local/lib/libintl.dylib >> /opt/local/lib/libintl.dylib: >> /opt/local/lib/libintl.8.dylib (compatibility version 10.0.0, current >> version 10.3.0) >> /opt/local/lib/libiconv.2.dylib (compatibility version 8.0.0, current >> version 8.1.0) >> /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current >> version 1213.0.0) >> >> /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation >> (compatibility version 150.0.0, current version 1151.16.0) >> >> >> Assuming gettext is an example of proper library version numbering, what's >> the relationship between version "0.19.4" and version "8" and version >> "10.3.0"? What do each of those numbers represent? What would be the >> appropriate circumstances when a developer would change each of those >> numbers? > > https://developer.apple.com/library/mac/documentation/DeveloperTools/Conceptual/DynamicLibraries/100-Articles/DynamicLibraryDesignGuidelines.html#//apple_ref/doc/uid/TP40002013-SW23
In addition to the link from Larry, Apple's developer tutorial for creating dynamic libraries is helpful as well, explaining through a concrete case example how the version information changes as the library API/ABI is changed: https://developer.apple.com/library/mac/documentation/DeveloperTools/Conceptual/DynamicLibraries/100-Articles/CreatingDynamicLibraries.html#//apple_ref/doc/uid/TP40002073-SW1 Further, having packaged for both MacPorts and Fink, the latter are rather more strict about this ABI versioning business. It may be helpful to read their shared library packaging policy: http://fink.thetis.ig42.org/doc/packaging/policy.php?phpLang=en#sharedlibs -- Arto Bendiken | @bendiken | http://ar.to _______________________________________________ macports-dev mailing list [email protected] https://lists.macosforge.org/mailman/listinfo/macports-dev
