Gentoo's Bugzilla –
Attachment 464284 Details for
Bug 609980sci-libs/plplot-5.12.0 - /usr/lib/gcc/x86_64-pc-linux-gnu/5.4.0/include/g++-v5/bits/c++0x_warning.h:32:2: error: error This file requires compiler and library support for the ISO C++ 2011 standard