Re: [HACKERS] Shared libs with version numbers.

Darren King writes:
> Is there any purpose to the version numbers that some ports append
> to a shared lib name, besides keeping different versions around?

Yes. Making sure your application doesn't load an incompatible version of
the lib.

> Using libpq as an example, is there a difference to the system if...
> 
> $(MAKE) libpq.so
> $(INSTALL) libpq.so libpq.so.1
> $(LN) libpq.so.1 libpq.so
> 
> ...rather than...
> 
> $(MAKE) libpq.so.1
> $(INSTALL) libpq.so.1 libpq.so.1
> $(LN) libpq.so.1 libpq.so

No. The file the system knows is libpq.so.1 either way. You might even call
it foo.bar in your Makefile as long as it is installed as libpq.so.1.

Michael

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