The compilation can be a bit slow when done sequentially. The -j option automatically picks the number of parallel build jobs based on the number of available cores.
The parallelization might be a concern then building on systems with a small amount of RAM, that can be addressed when such occasion arises.
As a side note, in many build systems, we leave the make stage to be executed separately by the user, so that the user can pick the level of parallelization. There are a few invocations of make in the build.sh script, I'm adding the -j flag only to the one that was slow in practice.
The compilation can be a bit slow when done sequentially. The
-joption automatically picks the number of parallel build jobs based on the number of available cores.The parallelization might be a concern then building on systems with a small amount of RAM, that can be addressed when such occasion arises.
As a side note, in many build systems, we leave the
makestage to be executed separately by the user, so that the user can pick the level of parallelization. There are a few invocations ofmakein the build.sh script, I'm adding the-jflag only to the one that was slow in practice.