It fails building one of the autogenerated source which forces tail call optimization on clang13 (actually in llvm somewhere, "musttail" feature) which is only available for certain arches, and causes a hard failure on mips64 (and probably other arches aswell).
One can disable it for more arches I guess, but I have only tested it on my octeon, built the package and then mosh (which depends on it) and tried mosh as a client which worked. mosh's "make test" fails in one test about 80columns-emulation-something, didn't feel all relevant to protobufs, but I don't know for certain about that. Since I am a bit uncertain about cvs-diffs that create dirs and diffs from empty files, the patch is available at: http://c66.it.su.se:8080/obsd/patch-src_google_protobuf_port_def.inc and inline here, but I feel certain gmail will mangle it: $ more patches/patch-src_google_protobuf_port_def.inc --- /usr/ports/pobj/protobuf-3.21.12/protobuf-3.21.12/src/google/protobuf/port_def.inc.orig +++ /usr/ports/pobj/protobuf-3.21.12/protobuf-3.21.12/src/google/protobuf/port_def.inc @@ -254,7 +254,7 @@ #ifdef PROTOBUF_TAILCALL #error PROTOBUF_TAILCALL was previously defined #endif -#if __has_cpp_attribute(clang::musttail) && !defined(__arm__) && \ +#if __has_cpp_attribute(clang::musttail) && !defined(__arm__) && !defined(__mips64) && \ !defined(_ARCH_PPC) && !defined(__wasm__) && \ !(defined(_MSC_VER) && defined(_M_IX86)) && \ !(defined(__NDK_MAJOR__) ^^^^^^ Simply adding a mips64 to the list of arches to skip. -- May the most significant bit of your life be positive.
