[Mageia-dev] Utter frustration

Fri Nov 30 13:59:25 CET 2012

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+On 30/11/12 12:26, Frank Griffin wrote:
+> On 11/30/2012 07:13 AM, Anne Wilson wrote:
+>> 
+>> Before doing all that, can you explain the significance of the 
+>> suffixes here?
+>> 
+>> ls /usr/lib/ | grep powerdevil 
+>> libpowerdevilconfigcommonprivate.so.4@ 
+>> libpowerdevilconfigcommonprivate.so.4.10.0* 
+>> libpowerdevilcore.so.0@ libpowerdevilcore.so.0.1.0* 
+>> libpowerdevilui.so.4@ libpowerdevilui.so.4.10.0*
+>> 
+> Library naming conventions use several, actual version, e. g.
+> 4.10.0, major version, e. g. 4, and a generic name, e. g.
+> libxxx.so.  The last two are usually symlinked to the first.
+> 
+> The major version usually signals an ABI difference or some other
+> major difference, e. g. new function, from the previous version.
+> The actual version changes whenever any change is made.  Developers
+> use the major version if their code is dependent on that major
+> version, but just use the generic name if any version will do.
+> 
+> In this way, the majority of packages using the library just ask
+> for libxxx.so, and don't have to be rebuilt or have their makefiles
+> or spec modified when the library changes.  A few packages, which
+> are dependent on a specific version, ask for libxxx.so.N (or
+> higher), and these have to be changed when the major version they
+> require is released.  A very very few packages are dependent on the
+> actual version, and these may have to change more often.
+
+I assume the starred ones are actually in use - what's the
+significance of '@'?  I'm not sure I've really understood this.
+
+Anne
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