[SOLVED] /sbin/ldconfig not present

hello.world · 07-24-2020, 09:54 PM

Hi, I'm in the middle of a BLFS build, having finished LFS a few days ago. I have successfully installed several BLFS packages, but I ran into a bit of a problem while installing Xorg libraries.

For some reason, /sbin/ldconfig does not exist on my system. I have tried looking (via ls) in /sbin, /usr/sbin, /bin, and /usr/bin. I'm not sure what to do now.

I'm pretty sure there were no problems while building glibc, as the test suites did not fail (if I remember correctly).

At this point, would it be possible (and safe) to rebuild and reinstall glibc?

Thanks in advance!

hello.world · 07-25-2020, 04:07 PM

Something I forgot to mention: there is a man page for ldconfig.

TheRealGrogan · 07-28-2020, 01:30 AM

If you build the exact same glibc, it shouldn't crash out on you during the make install, but it sucks when it does, so instead I'd use:

Code:

make install install_root=/some/dir

Strip your binaries and libraries and then manually copy it over from off system. That's how I upgrade glibc, anyway. You can write through directories with "cp -a". For example, if I did my make install to /some/dir I could boot from another Linux install (e.g. host system) or boot from a DVD, mount the filesystem to some /mountpoint and:

Code:

cd /mountpoint/some/dir
cp -a bin /mountpoint/
cp -a sbin /mountpoint/
cp -a lib /mountpoint/
cp -a usr /mountpoint/

and so on. That will just write through the existing directories and do the right thing with symlinks.

Alternatively, you could just set up the chroot again on the host system, and recompile and install glibc again that way but take care not to duplicate whatever caused your incomplete glibc install in the first place.

hello.world · 07-28-2020, 10:38 AM

Hello, thanks for the reply. I like the sound of your first method, so I think I'll go with that one. Before I commit to anything, I have a question.

Would I need to do all of the configuring that is done in Chapter 6 after the install?

Thanks for your help.

TheRealGrogan · 07-28-2020, 03:30 PM

No, you've already done all that stuff. You're just reinstalling glibc.

hello.world · 07-28-2020, 03:49 PM

Yeah, I figured so. I reread the build instructions for glibc in the LFS book a couple of times, and a lot of my questions cleared up. I decided to give it a try, and I just finished it. It looks like it has worked, as /sbin/ldconfig is now on my system. So far, I don't think anything has gone terribly wrong, so that's good.

Thank you very much for helping me solve this, I was (and still kinda am) a bit unfamiliar with building from source.