On Thu, Sep 20, 2012 at 09:42:16AM +0100, Stuart Henderson wrote:
> On 2012/09/19 22:06, Stefan Sperling wrote:
> > On Wed, Sep 19, 2012 at 10:37:09PM +0300, Alexey Suslikov wrote:
> > > Could you guide me how to rebuild/reinstall libc in a proper way?
> >
> > It's easy, just needs 11 steps. This is how I did it:
> >
> > 1) $ cd /usr/src/lib/libc
> > 2) edit files
> > 3) $ make obj
> > 4) $ make clean
> > 5) $ make
> > 6) pray !!!
> > 7) $ sudo make install
> > 8) ???
> > 9) Realise that step 7) should really be:
> > $ sudo cp /usr/lib/libc.so.66.0 /usr/lib/libc.so.66.0.bak
> > $ sudo make install
> > 10) reinstall system from snapshot
>
> see? step 6 was pointless!
>
> > 11) goto 2)
Plus sudo needs a shared libc, so if you break libc you cannot copy a
working one back unless yhou already have a root shell available.
I remember doing that quite often in the early days of my malloc work.
-Otto
