https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123976
--- Comment #158 from Iain Sandoe <iains at gcc dot gnu.org> --- (In reply to Peter Dyballa from comment #157) > Eureka! (Or rather buildreka?) md-unwind-def.h not found. well .. that's a surprise .. I was actually expecting it to work with the correct layout. > What now? Simplify the conditions - you need to get to the point you can build the compiler and _then_ add back the extras until you find the one that breaks it. assuming you now have something like .../gcc-16-branch-gcc-16-1-darwin/ .../build/ which should work fine ... ...so there's either a tool or configure options issue - or something in the MP path entry. the only way to find out is to reduce to the simplest case (which I outlined above) and then re-add. I suppose that there's some possibility that the stage #1 compiler is being miscompiled by the bootstrap compiler .. but it's not obvious how that would affect build-side things at present.
