build failed with -j<N>, N>=2 on 2 systems here and succeeded with empty MAKELAGS. Reproducible: Always Steps to Reproduce: 1. 2. 3.
libpcre-4.4 is available for testing for more archs. Please test that as I can't reproduce the problem on ~x86. Also, please include 'emerge info' next time so I know what arch you're talking about.
Closing due to lack of response.