I'm running 12.10.

I'm trying to run an application that needs libglut.so.3. I installed freeglut3 and I can see the library located in /usr/lib/x86_64-linux-gnu. But when I run the application, it tells me that it can't find the library.

When I run ldconfig -v | grep glut I get

/sbin/ldconfig.real: Path `/lib/x86_64-linux-gnu' given more than once
/sbin/ldconfig.real: Path `/usr/lib/x86_64-linux-gnu' given more than once
        libglut.so.3 -> libglut.so.3.9.0

What does it mean when it says the path is given more than once, and does this have anything to do with why the application can't find the library?

  • 1
    Did you ever find out? I'm running into the same problem. Jun 25, 2014 at 21:00
  • 1
    Check /etc/ld.so.conf.d/*. Oct 10, 2015 at 11:43
  • I've seen it too, but it appears to be only an informational message, not any sort of trouble. Here is a similar message from ldconfig -v, "/sbin/ldconfig.real: /lib/x86_64-linux-gnu/ld-2.19.so is the dynamic linker, ignoring" before this line "ld-linux-x86-64.so.2 -> ld-2.19.so". Oct 19, 2016 at 21:07

1 Answer 1


ldconfig.real searches /lib/x86_64-linux-gnu and /usr/lib/x86_64-linux-gnu by default.

On my system there is a configuration file in /etc/ld.so.conf.d/x86_64-linux-gnu.conf that included these directories, hence causing the error.

I then discovered that this file is created by the libc6 package. Thus, the /etc/ld.so.conf.d/x86_64-linux-gnu.conf file can be safely deleted.

When you run ldconfig --verbose again, you will see that those two directories are still indexed.

  • I had the same issue and after deleting the "/etc/ld.so.conf.d/x86_64-linux-gnu.conf" file, got rid of the error. Thank you very much
    – indfern
    Nov 11, 2022 at 23:00
  • I had the same issue after deleting the "/etc/ld.so.conf.d/x86_64-linux-gnu.conf" file, still having the error: $ sudo ldconfig --verbose /sbin/ldconfig.real: Path /usr/lib/x86_64-linux-gnu' given more than once /sbin/ldconfig.real: Path /usr/lib' given more than once
    – aagargoura
    May 16, 2023 at 10:27
  • I'm on Ubuntu 22.04. The path is builtin now with /sbin/ldconfig.real. So this is harmless either way, can be ignored. or you can file a bug report. bugs.launchpad.net/ubuntu/+filebug
    – Demon
    Jun 5, 2023 at 2:12

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