Ruby

I'm struggling with building ruby 3.0.X on my Mac Catalina (Intel based). Please note all 2.X versions are compiling correctly.

I've already tried to use gnugcc but getting same error:

▶ gcc --version Configured with: --prefix=/Library/Developer/CommandLineTools/usr --with-gxx-include-dir=/Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/include/c++/4.2.1 Apple clang version 12.0.0 (clang-1200.0.32.29) Target: x86_64-apple-darwin19.6.0 Thread model: posix InstalledDir: /Library/Developer/CommandLineTools/usr/bin ▶ g++ --version Configured with: --prefix=/Library/Developer/CommandLineTools/usr --with-gxx-include-dir=/Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/include/c++/4.2.1 Apple clang version 12.0.0 (clang-1200.0.32.29) Target: x86_64-apple-darwin19.6.0 Thread model: posix InstalledDir: /Library/Developer/CommandLineTools/usr/bin 

Linker command fails on (full log attached):

+ clang -fdeclspec -O3 -ggdb3 -Wall -Wextra -Wdeprecated-declarations -Wdivision-by-zero -Wimplicit-function-declaration -Wimplicit-int -Wmisleading-indentation -Wpointer-arith -Wshorten-64-to-32 -Wwrite-strings -Wmissing-noreturn -Wno-constant-logical-operand -Wno-long-long -Wno-missing-field-initializers -Wno-overlength-strings -Wno-parentheses-equality -Wno-self-assign -Wno-tautological-compare -Wno-unused-parameter -Wno-unused-value -Wunused-variable -Wextra-tokens -std=gnu99 -pipe -L. -fstack-protector-strong -L/usr/local/lib -fstack-protector-strong -Wl,-pie -framework Security -framework Foundation main.o dmydln.o miniinit.o dmyext.o array.o ast.o bignum.o class.o compar.o compile.o complex.o cont.o debug.o debug_counter.o dir.o dln_find.o encoding.o enum.o enumerator.o error.o eval.o file.o gc.o hash.o inits.o io.o iseq.o load.o marshal.o math.o memory_view.o mjit.o mjit_compile.o node.o numeric.o object.o pack.o parse.o proc.o process.o ractor.o random.o range.o rational.o re.o regcomp.o regenc.o regerror.o regexec.o regparse.o regsyntax.o ruby.o scheduler.o signal.o sprintf.o st.o strftime.o string.o struct.o symbol.o thread.o time.o transcode.o transient_heap.o util.o variable.o version.o vm.o vm_backtrace.o vm_dump.o vm_sync.o vm_trace.o coroutine/amd64/Context.o enc/ascii.o enc/us_ascii.o enc/unicode.o enc/utf_8.o enc/trans/newline.o explicit_bzero.o setproctitle.o addr2line.o -lpthread -lgmp -ldl -lobjc -o miniruby Undefined symbols for architecture x86_64: "_coroutine_transfer", referenced from: _fiber_setcontext in cont.o ld: symbol(s) not found for architecture x86_64 clang: error: linker command failed with exit code 1 (use -v to see invocation) make: *** [miniruby] Error 1 

Some people reported the same issue with Catalina and Big Sur: https://github.com/rbenv/ruby-build/issues/1723#issuecomment-872548168

Command Line Tools SDKs:

▶ ls /Library/Developer/CommandLineTools/SDKs/ 14 13 Feb 13:12 MacOSX.sdk -> MacOSX11.1.sdk 9 Jul 2020 MacOSX10.15.sdk 30 Nov 2020 MacOSX11.1.sdk 

I have very basic understanding of C and I'm suspecting that removal of this macro can be causing this behaviour: https://git.ruby-lang.org/ruby.git/commit/?id=e0f0ab959e , but I'm more than happy to be proven wrong