zig @0.10.0_0 : Failed to build zig - command execution failed

[dfousek]

:info:build [100%] Linking CXX executable zig2
:info:build /opt/local/bin/cmake -E cmake_link_script CMakeFiles/zig2.dir/link.txt --verbose=ON
:info:build /opt/local/bin/clang++-mp-15 -pipe -Os -DNDEBUG -I/opt/local/include -stdlib=libc++ -arch x86_64 -mmacosx-version-min=1$
:info:build ld: warning: directory not found for option '-L/opt/local/share/cmake/Modules'
:info:build Undefined symbols for architecture x86_64:
:info:build   "___ulock_wait2", referenced from:
:info:build       _std.Thread.Futex.DarwinImpl.wait in zig2.o
:info:build   "__availability_version_check", referenced from:
:info:build       ___isPlatformVersionAtLeast in zig2.o
:info:build   "_posix_spawn_file_actions_addchdir_np", referenced from:
:info:build       _posix_spawn.Actions.chdirZ in zig2.o
:info:build   "_posix_spawn_file_actions_addfchdir_np", referenced from:
:info:build       _posix_spawn.Actions.fchdir in zig2.o
:info:build ld: symbol(s) not found for architecture x86_64
:info:build clang: error: linker command failed with exit code 1 (use -v to see invocation)
:info:build make[2]: *** [zig2] Error 1

[ylluminarious (George Plymale II)]

Similar error occurring on M1 / ARM architectures:

:info:build Undefined symbols for architecture arm64:
:info:build   "_panic_stage", referenced from:
:info:build       _std.debug.panicImpl in zig2.o
:info:build   "_panic_state_raw", referenced from:
:info:build       _crash_report.PanicSwitch.preDispatch in zig2.o
:info:build       _crash_report.PanicSwitch.dispatch in zig2.o
:info:build   "_zir_state", referenced from:
:info:build       _crash_report.AnalyzeBody.push in zig2.o
:info:build       _crash_report.AnalyzeBody.pop in zig2.o
:info:build       _crash_report.dumpStatusReport in zig2.o
:info:build ld: symbol(s) not found for architecture arm64
:info:build clang: error: linker command failed with exit code 1 (use -v to see invocation)
:info:build make[2]: *** [zig2] Error 1

Also, this affects the ncdu port which relies on Zig as a build dependency.

[raxod502 (Radon Rosborough)]

I see (a subset of) this error on macOS 10.15 Catalina, specifically:

:info:build Undefined symbols for architecture x86_64:
:info:build   "___ulock_wait2", referenced from:
:info:build       _std.Thread.Futex.DarwinImpl.wait in zig2.o
:info:build ld: symbol(s) not found for architecture x86_64
:info:build clang: error: linker command failed with exit code 1 (use -v to see invocation)

I found an upstream bug report (closed as wontfix) which suggests the observed behavior is by design as support for 10.15 has been dropped: ​https://github.com/ziglang/zig/issues/13313

[ryandesign (Ryan Carsten Schmidt)]

In 64fb69ba7dfea00c8e9613d8b2a79a6b011e2114/macports-ports (master):

zig: Requires macOS 11 or later

See: ziglang/zig@2d03f389

Closes: #59774
Closes: #64658
Closes: #66590
Closes: #66919