Moving over to Raspberry Pi 3B+

[jomoengineer]

I wonder if there is a difference between the version of GCC that is running. Have you tried adding " -std=c++11" when compiling?

There is a tentative fix listed for glm and constexpr that was posted less than a month ago, but I am not sure if this is what you are seeing:
https://github.com/g-truc/glm/commit/68c...1415647bbb