gcc(6)-aux falling behind?

[Thomas Mueller]

I notice gcc advancing to 7.4, 8.3 and 9.2 while gcc-aux has not gone above v6.

I believe this is the only Ada compiler for FreeBSD and NetBSD.

Would it be possible to build a gcc that includes Ada using gcc6-aux on the source code for gcc 7.4 or 8.3?

Fact that it hasn't been done suggests there might be a reason why.

I had even thought about the possibility of using gcc6-aux or gcc5-aux to cross-compile a gcc for Linux.

Tom