From 71ad31684a4e6a3014ecd9934869d2e92d3b3a7d Mon Sep 17 00:00:00 2001
From: Kuba Mracek <mracek@apple.com>
Date: Fri, 22 Mar 2024 19:14:23 -0700
Subject: [PATCH] [lld] Disable ability to link Mach-O for Darwin platforms
 (but not non-Darwin firmware) in Swift LLVM fork

---
 lld/MachO/InputFiles.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lld/MachO/InputFiles.cpp b/lld/MachO/InputFiles.cpp
index c89f6f4722dcc..dbeb26683ed45 100644
--- a/lld/MachO/InputFiles.cpp
+++ b/lld/MachO/InputFiles.cpp
@@ -157,6 +157,11 @@ static bool checkCompatibility(const InputFile *input) {
   if (platformInfos.empty())
     return true;
 
+  // Swift LLVM fork downstream change start
+  error("This version of lld does not support linking for platform " + getPlatformName(platformInfos.front().target.Platform));
+  return false;
+  // Swift LLVM fork downstream change end
+
   auto it = find_if(platformInfos, [&](const PlatformInfo &info) {
     return removeSimulator(info.target.Platform) ==
            removeSimulator(config->platform());