On: Gtkmm now uses C++11

[superfunc]

Reliance on certain, newly-deprecated things like gnu hash_map which has performance characteristics important to our specific application.

[lholden → superfunc]

Does -std=gnu++11? not still support the gnu version?

[nly → lholden]

You can use hash_map just find in C++11/14 mode, you'll just a nag #warning at compile time.