On Sun, 2 Sep 2001, Steve M. Robbins wrote:
> Suppose I have a package that produces a shared lib. Debian policy
> 9.1 says I need to create a "shlibs" file. No problem;
> "dh_makeshlibs" does exactly this.
> Now, the "shlibs" file can optionally have version info in it.
> Why would I want to put version info in there?
> One case that immediately comes to mind is if package version
> 1.1 produces "libfoo", and version 1.2 produces "libfoo" *and*
> "libbar". You'd need version info for "libbar", yes?
Yes.
> Other reasons?
Version 2.1.1 of libfoo provides functions foo_open, foo_close. Version 2.1.2
of libfoo provides functions foo_open, foo_close, and foo_read. This doesn't
break the ABI; foo_open and foo_close have not changed, so there's no need to
increment the library so number (and thereby change the package name).
However, a binary compiled against libfoo 2.1.2 that uses foo_read will /not/
work with libfoo 2.1.1, so you need a version in shlibs.
HTH,
Steve Langasek
postmodern programmer
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