using glbinding::Meta; // <-- `aux::` namespace
for (const Version & v : Meta::versions()) // <-- `glbinding::` namespace for `Version `
std::cout << v << std::endl;
Better to make it this way:
for (const glbinding::Version &ver : glbinding::aux::Meta::versions())
std::cout << ver << std::endl;
Meta Information
Better to make it this way: