[Bug libgcc/123976] GCC 15.2.0 (libgcc) does not build on PPC Mac OS X 10.5.8, Leopard, because of missing "md-unwind-def.h"

[iains at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123976

--- Comment #70 from Iain Sandoe <iains at gcc dot gnu.org> ---
(In reply to Peter Dyballa from comment #69)
> (In reply to Iain Sandoe from comment #68)
> > please can you confirm exactly what sources you are building?
> > 
> It is gcc-16.1.0 using 15.2 to start build with. (And I can try to build
> others.)

gcc-16.1.0 upstream, unpatched, sources?