https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90371
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution|--- |INVALID --- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- For your target, needs to fully support pthreads and a few other things. You can look at what is needed via libstdc++/configure.ac and related files. Oh this is not the right place to request this kind of help since you are going to need to modify both newlib and libstdc++ for this support.