How can I use CMake for parallel builds?

How can I use CMake for parallel builds?

You can enable parallel builds in CMake by using the -j option with the make command. For example, make -j4 will use 4 threads.

Is there a way to set this option in the CMakeLists.txt file?

CMake itself doesn't have a direct option in CMakeLists.txt for parallel builds, but you can set the CMAKE_BUILD_PARALLEL_LEVEL variable to control the number of jobs.

What if I'm using Ninja instead of Make?

If you're using Ninja, it automatically handles parallel builds. Just run ninja and it will use all available cores by default.

Can I specify the number of jobs with Ninja?

Yes, you can specify the number of jobs with Ninja using the -j option, similar to Make. For example, ninja -j4.