diff --git a/lib/std/builtin.zig b/lib/std/builtin.zig
index a0fbaea7de0cbfbebcf1639dbfb9be2875019977..a6d2ae6a2f366a20677c88888e6f9f2c93405b23 100644
--- a/lib/std/builtin.zig
+++ b/lib/std/builtin.zig
@@ -765,7 +765,7 @@ pub fn default_panic(msg: []const u8, error_return_trace: ?*StackTrace, ret_addr
         builtin.zig_backend == .stage2_arm or
         builtin.zig_backend == .stage2_aarch64 or
         builtin.zig_backend == .stage2_x86 or
-        (builtin.zig_backend == .stage2_x86_64 and builtin.target.ofmt != .elf) or
+        (builtin.zig_backend == .stage2_x86_64 and (builtin.target.ofmt != .elf and builtin.target.ofmt != .macho)) or
         builtin.zig_backend == .stage2_riscv64 or
         builtin.zig_backend == .stage2_sparc64 or
         builtin.zig_backend == .stage2_spirv64)
diff --git a/src/Compilation.zig b/src/Compilation.zig
index d2ed241960ed61d701a6668e6c922ffdee2a8b0c..ee2100feddb0a7be66b1ef8a17b590eab9b485f5 100644
--- a/src/Compilation.zig
+++ b/src/Compilation.zig
@@ -6280,7 +6280,7 @@ fn canBuildLibCompilerRt(target: std.Target, use_llvm: bool) bool {
     }
     return switch (target_util.zigBackend(target, use_llvm)) {
         .stage2_llvm => true,
-        .stage2_x86_64 => if (target.ofmt == .elf) true else build_options.have_llvm,
+        .stage2_x86_64 => if (target.ofmt == .elf or target.ofmt == .macho) true else build_options.have_llvm,
         else => build_options.have_llvm,
     };
 }
@@ -6298,7 +6298,7 @@ fn canBuildZigLibC(target: std.Target, use_llvm: bool) bool {
     }
     return switch (target_util.zigBackend(target, use_llvm)) {
         .stage2_llvm => true,
-        .stage2_x86_64 => if (target.ofmt == .elf) true else build_options.have_llvm,
+        .stage2_x86_64 => if (target.ofmt == .elf or target.ofmt == .macho) true else build_options.have_llvm,
         else => build_options.have_llvm,
     };
 }