# 4x parallelized make, which will probably fail due to RAM consumption
make -j4
# make -j1 in order to catch up, where the parallel make aborted
On a 4 core i7-8550U this may take up to 3h.
The parallel make may run out of memory at the end. You can restart it sequentially by issuing another `make -j1`.
On a 4 core i7-8550U with 16GB RAM this may take up to 1:15h, with an additional 0:15h for a sequentially run make ( `make -j1` ) to account for a poor man's RAM equipment.
If there are errors regarding missing header files, you probably need to rebuild llvm.