/usr/bin/arm-none-eabi-g++ is in gcc-arm-none-eabi 15:4.9.3+svn231177-1.
This file is owned by root:root, with mode 0o755.
It is a symlink to /usr/bin/./usr/bin/arm-none-eabi-c++
/usr/bin/./usr/bin/arm-none-eabi-c++