https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104290
--- Comment #22 from Ian Lance Taylor <ian at airs dot com> --- Thanks. I'll commit your patches #1 through #8. Your patch #9 is to a generated file. The fix there can't be to patch just the top-level Makefile.in. It has to be to patch whatever is causing Makefile.in to be generated the way that it is. I don't myself know what is going wrong there.
