Commit 96a703ee6d

@@ -476,6 +476,8 @@ fn linkWithLLD(self: *MachO, comp: *Compilation) !void {
         man.hash.addStringSet(self.base.options.system_libs);
         man.hash.add(allow_shlib_undefined);
         man.hash.add(self.base.options.bind_global_refs_locally);
+        man.hash.add(self.base.options.system_linker_hack);
+        man.hash.addOptionalBytes(self.base.options.syslibroot);
 
         // We don't actually care whether it's a cache hit or miss; we just need the digest and the lock.
         _ = try man.hit();

@@ -530,7 +530,10 @@ pub fn create(gpa: *Allocator, options: InitOptions) !*Compilation {
 
         const darwin_options: DarwinOptions = if (build_options.have_llvm and comptime std.Target.current.isDarwin()) outer: {
             const opts: DarwinOptions = if (use_lld and options.is_native_os and options.target.isDarwin()) inner: {
-                const syslibroot = try std.zig.system.getSDKPath(arena);
+                // TODO Revisit this targeting versions lower than macOS 11 when LLVM 12 is out.
+                // See https://github.com/ziglang/zig/issues/6996
+                const at_least_big_sur = options.target.os.getVersionRange().semver.min.major >= 11;
+                const syslibroot = if (at_least_big_sur) try std.zig.system.getSDKPath(arena) else null;
                 const system_linker_hack = std.os.getenv("ZIG_SYSTEM_LINKER_HACK") != null;
                 break :inner .{
                     .syslibroot = syslibroot,