`zig libc` panics on macOS

[Jarred-Sumner]

Zig Version

0.10.0-dev.4870+be5130ec5

Steps to Reproduce

Run zig libc

Expected Behavior

Don't panic, maybe print a non-zero exit code

Actual Behavior

thread 28145757 panic: Darwin is handled separately via std.zig.system.darwin module
Unable to dump stack trace: debug info stripped
fish: Job 1, 'zig libc' terminated by signal SIGABRT (Abort)

[jedisct1]

Were you running a beta release on macOS by chance?

[haze]

Were you running a beta release on macOS by chance?

I was when this was happening to me (but it turned out zig just didn’t support Ventura)

[jedisct1]

Yep, this is because Zig doesn't include a copy of libSystem.tbd for that macOS version.

In order to use Zig on Ventura, #12080 is required as well as the following diff:

diff --git a/src/Compilation.zig b/src/Compilation.zig
index b00f13581..4e21245f4 100644
--- a/src/Compilation.zig
+++ b/src/Compilation.zig
@@ -4474,7 +4474,7 @@ fn detectLibCIncludeDirs(

     // If linking system libraries and targeting the native abi, default to
     // using the system libc installation.
-    if (link_system_libs and is_native_abi and !target.isMinGW()) {
+    if ((link_system_libs or target.isDarwin()) and is_native_abi and !target.isMinGW()) {
         if (target.isDarwin()) {
             return if (has_macos_sdk)
                 // For Darwin/macOS, we are all set with getDarwinSDK found earlier.

[anatol]

I started seeing this issue after upgrading my computer to MacOSX 13.0 (Ventura)

[jedisct1]

Can you try the macos-13 branch?

[anatol]

@jedisct1 I tried to build macos-13 branch using instructions from https://github.com/ziglang/zig/wiki/Building-Zig-From-Source and stage3 fails for me with

[ 93%] Building CXX object CMakeFiles/zigstage1.dir/src/stage1/range_set.cpp.o
[ 94%] Building CXX object CMakeFiles/zigstage1.dir/src/stage1/softfloat_ext.cpp.o
[ 94%] Building CXX object CMakeFiles/zigstage1.dir/src/stage1/stage1.cpp.o
[ 95%] Building CXX object CMakeFiles/zigstage1.dir/src/stage1/target.cpp.o
[ 95%] Building CXX object CMakeFiles/zigstage1.dir/src/stage1/tokenizer.cpp.o
[ 96%] Building CXX object CMakeFiles/zigstage1.dir/src/stage1/util.cpp.o
[ 97%] Linking CXX static library zigcpp/libzigstage1.a
[ 97%] Built target zigstage1
[ 98%] Building CXX object CMakeFiles/zig1.dir/src/stage1/zig0.cpp.o
[ 98%] Linking CXX executable zig1
[ 98%] Built target zig1
[ 99%] Building stage2 object /Users/apomazau/sources/zig/build/zig2.o
[ 99%] Building CXX object CMakeFiles/zig2.dir/src/stage1/empty.cpp.o
[100%] Linking CXX executable zig2
[100%] Built target zig2
[100%] Building stage3
error(compilation): clang failed with stderr: In file included from /Users/apomazau/sources/zig/deps/SoftFloat-3e/source/s_tryPropagateNaNF128M.c:38:
In file included from /Users/apomazau/sources/zig/lib/include/stdint.h:52:
In file included from /Users/apomazau/sources/zig/lib/libc/include/any-macos-any/stdint.h:52:
/Users/apomazau/sources/zig/lib/libc/include/any-macos-any/sys/_types.h:32:10: fatal error: 'sys/cdefs.h' file not found

error(compilation): clang failed with stderr: In file included from /Users/apomazau/sources/zig/deps/SoftFloat-3e/source/softfloat_state.c:37:
In file included from /Users/apomazau/sources/zig/lib/include/stdint.h:52:
In file included from /Users/apomazau/sources/zig/lib/libc/include/any-macos-any/stdint.h:52:
/Users/apomazau/sources/zig/lib/libc/include/any-macos-any/sys/_types.h:32:10: fatal error: 'sys/cdefs.h' file not found

error(compilation): clang failed with stderr: In file included from /Users/apomazau/sources/zig/deps/SoftFloat-3e/source/f64_to_f16.c:38:
In file included from /Users/apomazau/sources/zig/lib/include/stdint.h:52:
In file included from /Users/apomazau/sources/zig/lib/libc/include/any-macos-any/stdint.h:52:
/Users/apomazau/sources/zig/lib/libc/include/any-macos-any/sys/_types.h:32:10: fatal error: 'sys/cdefs.h' file not found

error(compilation): clang failed with stderr: In file included from /Users/apomazau/sources/zig/deps/SoftFloat-3e/source/s_addExtF80M.c:38:
In file included from /Users/apomazau/sources/zig/lib/include/stdint.h:52:
In file included from /Users/apomazau/sources/zig/lib/libc/include/any-macos-any/stdint.h:52:
/Users/apomazau/sources/zig/lib/libc/include/any-macos-any/sys/_types.h:32:10: fatal error: 'sys/cdefs.h' file not found

error(compilation): clang failed with stderr: In file included from /Users/apomazau/sources/zig/deps/SoftFloat-3e/source/i32_to_f128M.c:37:
In file included from /Users/apomazau/sources/zig/lib/include/stdint.h:52:
In file included from /Users/apomazau/sources/zig/lib/libc/include/any-macos-any/stdint.h:52:
/Users/apomazau/sources/zig/lib/libc/include/any-macos-any/sys/_types.h:32:10: fatal error: 'sys/cdefs.h' file not found

error(compilation): clang failed with stderr: In file included from /Users/apomazau/sources/zig/deps/SoftFloat-3e/source/ui32_to_f128M.c:37:
In file included from /Users/apomazau/sources/zig/lib/include/stdint.h:52:
In file included from /Users/apomazau/sources/zig/lib/libc/include/any-macos-any/stdint.h:52:
/Users/apomazau/sources/zig/lib/libc/include/any-macos-any/sys/_types.h:32:10: fatal error: 'sys/cdefs.h' file not found

error(compilation): clang failed with stderr: In file included from /Users/apomazau/sources/zig/deps/SoftFloat-3e/source/s_addF128M.c:38:
In file included from /Users/apomazau/sources/zig/lib/include/stdint.h:52:
In file included from /Users/apomazau/sources/zig/lib/libc/include/any-macos-any/stdint.h:52:
/Users/apomazau/sources/zig/lib/libc/include/any-macos-any/sys/_types.h:32:10: fatal error: 'sys/cdefs.h' file not found

[nektro]

https://github.com/ziglang/zig/blob/macos-13/lib/libc/include/aarch64-macos.13-none/sys/cdefs.h exists
https://github.com/ziglang/zig/blob/macos-13/lib/libc/include/x86_64-macos.13-none/sys/cdefs.h does not

[jedisct1]

Can you git pull and try again?

[jedisct1]

Also, Jakub has a PR for it: #13299