From e15a4f0a320e3c1248539511adee55a201e9ed2e Mon Sep 17 00:00:00 2001
From: Dimitry Andric <dim@FreeBSD.org>
Date: Tue, 20 Feb 2024 19:46:41 +0100
Subject: Vendor import of llvm-project branch release/18.x
 llvmorg-18.1.0-rc2-53-gc7b0a6ecd442.

---
 lld/COFF/Driver.cpp | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

(limited to 'lld/COFF/Driver.cpp')

diff --git a/lld/COFF/Driver.cpp b/lld/COFF/Driver.cpp
index e0afb6b18805..22ee2f133be9 100644
--- a/lld/COFF/Driver.cpp
+++ b/lld/COFF/Driver.cpp
@@ -1825,7 +1825,15 @@ void LinkerDriver::linkerMain(ArrayRef<const char *> argsArr) {
     }
   } else {
     config->repro = false;
-    config->timestamp = time(nullptr);
+    if (std::optional<std::string> epoch =
+            Process::GetEnv("SOURCE_DATE_EPOCH")) {
+      StringRef value(*epoch);
+      if (value.getAsInteger(0, config->timestamp))
+        fatal(Twine("invalid SOURCE_DATE_EPOCH timestamp: ") + value +
+              ".  Expected 32-bit integer");
+    } else {
+      config->timestamp = time(nullptr);
+    }
   }
 
   // Handle /alternatename
-- 
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