https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101843
Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Component|other |bootstrap Keywords| |documentation --- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> --- The combined tree builds indeed only work for versions where those mentioned directories are in sync - usually that's binutils master vs. gcc master. For release versions your milage may vary and we fail to document working version pairs. I'm not sure this is anything but a documentation bug. For GCC 11 I recommend to use binutils 2.36 instead.