[Bug ada/69883] gcc-6.0 unable to build gcc-4.9 with ada

[Arnaud Charlet]

> I could understand that I can not build something form 1992 with todays
> tools, but what I do not understand conceptionally, why the host compiler
> seems to link with the target compiler's runtime, would it work as a
> cross build then?

No, for a cross build you need an identical native compiler (same version)
to start with.

For native you need an older (or equal) compiler.

> Could I even get into trouble building gcc4.9 with gcc-5 as host?

Yes.

Arno