Ninja

Ninja is a build system with a focus on speed.

Reference: ninja-build.org

Use Ninja in CMake

• Install Ninja first

• Generating project files

CMake -G Ninja
CMake -G Ninja -DCMAKE_MAKE_PROGRAM=/path/to/ninja

• Build Ninja

Default:

ninja -C <directory where build.ninja is>

Specify how many build commands ninja need run in parallel:

ninja -C <directory where build.ninja is> -j <number, eg. 20>

The -j option usually can be omitted, as Ninja builds in parallel by default.