https://gcc.gnu.org/bugzilla/show_bug.cgi?id=29366
--- Comment #6 from Oleg Endo <olegendo at gcc dot gnu.org> --- Created attachment 34478 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34478&action=edit proposed workaround patch There hasn't been any update for PR 53579. I'd like to propose the attached patch as a work around until the CXXFLAGS_FOR_TARGET issues has been figured/sorted out. The patch works on a default sh-elf/newlib config -- it just uses the single-thread fake atomics from libstdc++. Kaz, could you please try the patch on sh4-linux?
