https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101246
--- Comment #5 from Lance Fredrickson <lancethepants at gmail dot com> --- Just to check another architecture, I tried building gccgo-11 for x86_64 and uclibc-ng. With gcc-11 I get the same build-time error with x86_64 as I did with arm. gccgo-10 for x86_64 & uclibc-ng did build, but when compiling a simple program I get a few undefined errors I don't have with arm. undefined reference to `__wrap_pthread_create' undefined reference to `__morestack_block_signals' undefined reference to `__generic_morestack' undefined reference to `__morestack_unblock_signals' Probably needs to be its own bug report. Not sure if gcc-10 will see more releases, but I would guess it would still be present in gcc-11 if it built. I hope uclibc-ng still gets some love from gcc and is supported. It plays nice with old kernels, has more supported targets, and is still actively developed.