[Bug c++/78263] Compile failure with AltiVec library on PPC64le and -std=c++11 flag

[wschmidt at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78263

--- Comment #1 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
You simply need to use -std=gnu++11 instead of -std=c++11.