Yesterday as I proceeded with my GlibC adventures, I finally got to the
point at which I needed to rebuild it. Another speed bump! After I had
configure GlibC and "Adjusted the Tool Chain," I uninstalled GlibC to
start again. I obviously couldn't do it. Nor could I do anything by
reverting to Ch 5 procedures. I received a definite lesson on the
changes to $LFS/tools in Chapter 6. So, I needed to revert back to the
original /tools.
I have discovered a convenient and powerful command line combination.
It's presented in The CPIO Manual
<http://www.gnu.org/software/cpio/manual/>.
Code: find . -depth -print0 | cpio --null -pvd $new-directory
So to revert to a "fresh" $LFS/tools I merely did
rm -r $LFS/tools/*
cd /mnt/backups/lfs-toolchain
find . -depth -print0 | cpio --null -pvd $LFS/tools
In less than a minute I was back in business.
I backed up /tools in the same way.
With a little fiddling and the addition of -xdev to find, one can back
up a whole partition in a matter of a few minutes. In fact, I used this
to migrate my Ubuntu distro to an external hard drive so that I could
use my entire internal hard drive for my new {,B}LFS build.
I hope someone finds this helpful.
Dan
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