Date: Sat, 4 Dec 2010 20:38:05 +0100 From: Alexander Leidinger <Alexander@Leidinger.net> To: Benedict Reuschling <bcr@FreeBSD.org> Cc: doc-committers@FreeBSD.org, mexas@bristol.ac.uk, cvs-doc@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: doc/en_US.ISO8859-1/books/handbook/cutting-edge chapter.sgml Message-ID: <20101204203805.00006179@unknown> In-Reply-To: <201012041756.oB4HuFjD001878@repoman.freebsd.org> References: <201012041756.oB4HuFjD001878@repoman.freebsd.org>
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On Sat, 4 Dec 2010 17:56:15 +0000 (UTC) Benedict Reuschling
<bcr@FreeBSD.org> wrote:
> bcr 2010-12-04 17:56:15 UTC
>
> FreeBSD doc repository
>
> Modified files:
> en_US.ISO8859-1/books/handbook/cutting-edge chapter.sgml
> Log:
> Add a section about deleting old files, directories and libraries
> with a short description why this is necessary.
Pointy hat to: netchild (for not doing something like this when he
implemented this).
Improvement suggestions:
- While this is already covered in "implemented elsewhere":
Changing the version number of a library can also be a
reason. Strictly speaking this is "elsewhere", from another
point of strict-view this is not elsewhere but in the the
same library, just another version.
- There is not only the argument of storage space, but also
security (if an old lib-version is used which may contain
a security hole or not), and stability (old lib version
may have a little bit different behavior, or may cause crashes
if mixed with more recently compiled stuff which includes
a reference to a more recent version of the same lib). This
is mentioned at the end of the description, but IMHO it would
be better to describe this in the beginning.
- check-old includes check-old-libs, no need to run both.
- I suggest to delete the files after a mergemaster was done,
and not directly after the installworld. This way an outdated
rc- script can not reference something which gets deleted.
- Running delete-old-libs blindly is not a good idea. Before
the delete-old-libs there should be a check if something
references those libs (e.g. with sysutils/libchk), and if
yes, the ports/programs/libs should be recompiled before
the delete-old-libs target is executed. It is mentioned
at the end that you shouldn't remove files/libs which
are still used, but IMHO it would be better to mention
it before telling to do delete-old(-libs).
- BATCH_DELETE_OLD_FILES does not need to be an env-var,
as a make-var it works too:
"make -DBATCH_DELETE_OLD_LIBS delete-old"
- As portmaster is mentioned, I suggest to mention portupgrade
too.
Bye,
Alexander.
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