[Bug target/119172] [12/13/14 regression] macOS SDK version is not set by gcc

[iains at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119172

--- Comment #3 from Iain Sandoe <iains at gcc dot gnu.org> ---
(In reply to Iain Sandoe from comment #2)
> fixed on trunk so far, back ports to follow.

this also needs r15-8244-gfc728cfd569e29, which corrects my typos, to be back
ported.