clion - What's the difference between cmake vs cmake3?

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I'm been working with CLion when I would update his cmake version to use my default cmake binary, so : " /usr/bin/cmake ".

When I entered cmake's path, there is two binaries matching the expression : " /usr/bin/cmake " and " /usr/bin/cmake3 ". It puzzled me with some questions.

What's the difference between that two and which one to use ?

Try this:


    /usr/bin/cmake --version

and


    /usr/bin/cmake3 --version

and see whether the result yields any insights. – lubgr Jun 22, 2018 at 14:19 You can try


    ls -la /usr/bin/cmake*

. In my case I can see


    /usr/bin/cmake -> /usr/bin/cmake3

. That means that cmake is a symbolic link to cmake3. Both are same. – Thomas Sablik Jun 22, 2018 at 14:21 Thank you @ThomasSablik, I didn' think to try using

ls

, thank you for this quick response! – Sunchock Jun 22, 2018 at 15:21

As Thomas Sablik mentioned, /usr/bin/cmake is simply a symbolic link to /usr/bin/cmake3 . This is the practice of many binaries in Linux - having a symbolic link to a specific version of a binary. In many cases, multiple binaries are installed simultaneously. When/If CMake 4 is released, presumably it will be placed in /usr/bin/cmake4 , and the symbolic link updated by the installation.

However, cmake actually goes a step further in its versioning, because in your CMakeLists.txt, you must use the cmake_minimum_required statements, ensuring that your script will not run, unless it is run with a compatible version.

cmake is not necessarily a symbolic link. For example on Centos 6 and 7 cmake and cmake3 are different binaries. – f3xy Aug 27, 2019 at 21:54

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