Hello all, it turns out that the only way to fix the gcc-6 bug is currently to force -std=c++03, because of [1] (#829604 reported against g++-6). Specifically, the package includes a header from librostlab-blast0-dev that triggers #829604 (see also [2]). Hence the changelog reads: * Force -std=c++03, because of #829604, Closes: #811702 Best, Gert [1] https://bugs.debian.org/829604 [2] https://bugs.debian.org/811992