On the website documentation for installing gentoo it is mentioned that one should set -j2 to speed up the make process. The problem is that when I run the installation I noticed a big warning message from perl telling me that parallel compiling only works when you also use USE=thread (or was it threaded?) as well. Consequently the build failed and I had to start over again. At the second time I set it to -j1 and then it worked without any problems. Reproducible: Always Steps to Reproduce: 1. 2. 3.
The perl ebuilds force -j1 now.