compilation failure

[rwa]

I had this building on a quite old version of Ubuntu, but I'm trying to get up and running on Ubuntu 21.04 and now I'm having troubles.

In particular, I run into this error within sol2:

./../../../../3rdparty/sol2/sol/stack_push.hpp:571:40: error: call of overloaded ‘push<const char32_t*>(lua_State*&, const char32_t [2], const char32_t*)’ is ambiguous

Some googling says this is "fixed" in the latest mame, but it's clear how or where it was fixed. I don't know if merging the latest mame is feasible here.

I've tried this in gcc10, then gcc9, then gcc8, and it's the same problem with each.

Any ideas?

[fr0zenrain]

Ubuntu 18.04, gcc 7.5 compile ok