Source: charls Version: 1.1.0+dfsg-2 Now that all buildds default to >= gcc-7, which in turns compiles using -std=c++14 it may be a good time to switch to CharLS v2.0.0 and drop the legacy v1.1.0 which is only compatible with c++03:
https://github.com/team-charls/charls#about-this-software (...) The master branch uses modern C++14. The 1.x branch is maintained in C++03. (...)