[blfs-support] Updates Without Crashing LFS

Samuel Tyler samuel.tyler at education.nsw.gov.au
Tue Sep 13 13:40:33 PDT 2016

Ok, I understand all this. So what happens (for example) if I have
installed GCC 6.1.0 and I want to upgrade to GCC 6.2.0. If I was not to
rebuild the entire system, and I just ran the configure make make install
commands in the book, would it _entirely_ replace GCC 6.1.0?

On Tuesday, 13 September 2016, Ken Moffat <zarniwhoop at ntlworld.com> wrote:

> On Tue, Sep 13, 2016 at 12:52:05AM +0100, Ken Moffat wrote:
> > On Mon, Sep 12, 2016 at 04:03:57PM -0500, Bruce Dubbs wrote:
> >
> > For gcc, because there are _so_many_ static libs, I would be wary if
> > upgrading for a vulnerability.  For glibc, when the vulnerability
> > which caused us to throw away LFS-7.9-rc1 came out, I did upgrade
> > the current version of glibc (I patched a few lines).  I also did
> > something similar to one version in the past, because some sort of
> > usability problem (in audio, I think) was fixed.
> >
> > But for my older systems at the time of that glibc vulnerability : a
> > couple were patched, but I was unable to backport the fixes to the
> > version of glibc used in a couple of older systems - so I scrapped
> > those.
> >
> And just in case it isn't obvious : for LFS, patch the same version
> of glibc as you used to build the system.  AND reboot after the
> glibc install.  It will probably be an unclean shutdown.  I enable
> Magic-SysRQ in the kernel, so if it hangs Alt-SysRq-S (sync), pause
> briefly, Alt-SysRq-B (boot).
> ĸen
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Samuel Tyler
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