A powerful IDE from JetBrains helps you develop in C and C++ on Linux, macOS


This works but is unsupported. If you need need CLion, go ahead. If you’re flexible, there’s VScode and VScodium.


Download clion for Linux OS from here and do these steps:

$ tar -xvf JetBrains.CLion.XXXX.Y.tar -C /path/to/folder
$ cd /path/to/folder
$ rm clion/jbr -rf
$ guix build icedtea
$ sudo ln -sv /gnu/store/1y4mxpqdans1q8p6wskhklsl335abgqq-icedtea-3.7.0-jdk /var/guix/gcroots
$ ln -sv /var/guix/gcroot/1y4mxpqdans1q8p6wskhklsl335abgqq-icedtea-3.7.0-jdk /path/to/folder/clion/jbr


$ /path/to/folder/clion/bin/

Update CMake and GDB path in Configuration Toolchains:

  • /home/panther/.guix-profile/bin/cmake for CMake
  • /home/panther/.guix-profile/bin/gdb for gdb

I assumed you installed cmake and gdb already.


Auto completion

CLion uses an embedded version of clangd as language server for auto completion support, and it crashes due to missing library issues. a quick workaround is to disable clangd completion and use build-in auto completion support in CLion. for this we need to go to following path

settings > languages and frameworks > C\C++ > clangd

and select Disable Cland completion option in code completion section.

If you faced with any java runtime exception the CLion version is not matched with installed JDK (icedtea). Currently the latest version of icedtea is 3.7 that is released for OpenJDK 8.

One of popular errors is:

Error: A JNI error has occurred, please check your installation and try again
Exception in thread "main" java.lang.UnsupportedClassVersionError: com/intellij/idea/Main has been compiled by a more recent version of the Java Runtime (class file version 55.0), this version of the Java Runtime only recognizes class file versions up to 52.0

Let’s see how the major version numbers map to Java versions:

    45 = Java 1.1
    46 = Java 1.2
    47 = Java 1.3
    48 = Java 1.4
    49 = Java 5
    50 = Java 6
    51 = Java 7
    52 = Java 8
    53 = Java 9
    54 = Java 10
    55 = Java 11
    56 = Java 12
    57 = Java 13

Tested Versions

These version tested with this approach and are working with icedtea@3.7:

  • CLion-2019.3.4
  • CLion-2019.3.6
  • CLion-2020.1

Useful Links


PantherX & (unofficial) GNU Guix Wiki.

Last update: 2021-10-12 20:09:22 +0000

Inspired by the excellent Arch Linux Wiki