From b018058e93491373dd0f3363b5cae771fd67d5e8 Mon Sep 17 00:00:00 2001
From: Neil Jones <futurejones@users.noreply.github.com>
Date: Fri, 1 Mar 2024 23:39:50 +0900
Subject: [PATCH] Add files via upload

---
 .../amazonlinux-lld-UnixToolchains-v2.patch   | 38 +++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 test-patches/amazonlinux-lld-UnixToolchains-v2.patch

diff --git a/test-patches/amazonlinux-lld-UnixToolchains-v2.patch b/test-patches/amazonlinux-lld-UnixToolchains-v2.patch
new file mode 100644
index 0000000..f10a5df
--- /dev/null
+++ b/test-patches/amazonlinux-lld-UnixToolchains-v2.patch
@@ -0,0 +1,38 @@
+diff --git a/lib/Driver/UnixToolChains.cpp b/lib/Driver/UnixToolChains.cpp
+index 61498c144a2..99d2c479849 100644
+--- a/lib/Driver/UnixToolChains.cpp
++++ b/lib/Driver/UnixToolChains.cpp
+@@ -9,6 +9,8 @@
+ // See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
+ //
+ //===----------------------------------------------------------------------===//
++#include <iostream>
++#include <fstream>
+ 
+ #include "ToolChains.h"
+ 
+@@ -111,6 +113,24 @@ ToolChain::InvocationInfo toolchains::GenericUnix::constructInvocation(
+ }
+ 
+ std::string toolchains::GenericUnix::getDefaultLinker() const {
++  // Check if we are on Amazon Linux and set default linker to lld.
++  if (getTriple().isOSLinux()) {
++    std::string getLinuxDistro() {
++      std::ifstream file("/etc/os-release");
++      std::string line;
++
++      while (std::getline(file, line)) {
++        if (line.substr(0, 3) == "ID=") {
++          return line.substr(3);
++        }
++      }
++      return "unknown";  // Return "unknown" if the ID field is not found
++    }
++    if (getLinuxDistro() == "amzn") {
++    return "lld";
++    }
++  }
++
+   if (getTriple().isAndroid())
+     return "lld";
+