USE_CXX_FEATURES

[Patrick Welche <prlw1%welche.eu@localhost>]

Am I right in thinking that

  USE_CXX_FEATURES=	c++17

is "just" so that we pick a compiler that supports that variety of c++
a la GCC_REQD, but we still need a

  USE_LANGUAGES=	c++17

to actually apply the -std=c++17 flag so it get used?

I just note that databases/libpqxx compiles with Makefile 1.40, but not
Makefile 1.41.


Cheers,

Patrick