libc++
libc++ is a new implementation of the C++ standard library, targeting C++11.
Used in the Mapbox GL plugin of Qt Location.
The sources can be found in qtlocation-opensource-src-29WtWo/qtlocation-opensource-src-5.12.8+dfsg/src/3rdparty/mapbox-gl-native.
Copyright (c) 2009-2014 libc++ developers
MIT and UIUC (BSD-like).