How to Check CMake Version on Ubuntu

When installing Qt 5 on Ubuntu, it's essential to ensure that the correct version of CMake is installed. This article will guide you through checking your CMake version and provide tips for resolving common issues.

To check your CMake version, open a terminal and run the command `cmake --version`. If you have multiple versions of CMake installed on your system, you may need to specify the full path to the CMake executable. For example, if you installed CMake from source, it may be located at `/usr/local/bin/cmake`.

In some cases, running the `cmake --version` command may not work immediately after installing CMake. This is because the default installation location for CMake on Ubuntu is `/usr/local/bin/`, which may not be included in your system's PATH environment variable. To resolve this issue, you can add the `/usr/local/bin/` directory to your PATH by running `export PATH=$PATH:/usr/local/bin/`.

If you're experiencing issues with finding Qt 5 using CMake, it's essential to ensure that the correct `CMAKE_PREFIX_PATH` is set. This environment variable should be set to the location of the Qt 5WidgetsConfig.cmake file. You can also try setting the `Qt5_DIR` environment variable to the same location.

Additionally, you may need to install an OpenSSL development package or configure CMake with `-DCMAKE_USE_OPENSSL=OFF` to build without OpenSSL.

In conclusion, checking your CMake version on Ubuntu is a straightforward process that can help resolve common issues when installing Qt 5. By following these tips and ensuring that the correct environment variables are set, you should be able to successfully install and use Qt 5 on your system.

Check cmake version ubuntu