Gentoo's Bugzilla –
Attachment 417626 Details for
Bug 566586mate-extra/mate-system-monitor-1.8.0 - c++0x_warning.h:32:2:error: #error This file requires compiler and library support for the ISO C++ 2011 standard. This support is currently experimental, and must be enabled with the -std=c++11 or -std=gnu++11 compi