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Richard Knop
Asked: 2010-11-15 08:46:55 +0800 CST

How to set $LD_LIBRARY_PATH in Ubuntu?

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I need to do this:

On linux, we have to find a few dynamic libraries which are not on a standard location. We have to set $LD_LIBRARY_PATH to /path/to/sdk/lib

How can I do that in Ubuntu 10.10?

linux ubuntu environment-variables

3 Answers

  1. Best Answer

    To define this variable, simply use (on the shell prompt):

    export LD_LIBRARY_PATH="/path/to/sdk/lib"

    To make it permanent, you can edit the ldconfig files. First, create a new file such as:

    sudo vi /etc/ld.so.conf.d/your_lib.conf

    Second, add the path in the created file

    /path/to/sdk/lib

    Finally, run ldconfig to update the cache.

    sudo ldconfig
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  2. In bash, assign it before the executable to be run.

    LD_LIBRARY_PATH=/path/to/sdk/lib ./somedevtool
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  3. You have to run the

    export LD_LIBRARY_PATH="/path/to/sdk/lib"

    to export the path to the compilers.
    Default path is in usr/bin
    Copy and paste the path into the your_lib.conf file in the location /etc/ld.so.conf.d then save and exit.

    sudo ldconfig

    Run this to confirm the changes in the files which added the paths

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