https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82348
--- Comment #1 from Ian Lance Taylor <ian at airs dot com> --- There is no internal/cpu.gox file in GCC 7, so something strange is going on. On current mainline internal/cpu exists, but the Makefile does not build it. You must have modified the libgo sources in some way. > I would like to ask, whether gcc-compiled/gcc/gccgo is the final go compiler > or it is previous generated compiler from bootstrapping. I'm not sure I understand the question, but by the time libgo is being built, gccgo is the final Go compiler driver.