From 4f277f28ab88bb96c8da1da96dda11bab17a3da7 Mon Sep 17 00:00:00 2001
From: Amir Ayupov <aaupov@fb.com>
Date: Fri, 15 Apr 2022 06:13:19 -0700
Subject: [BOLT] Check if LLVM_REVISION is defined

Handle the case where LLVM_REVISION is undefined (due to LLVM_APPEND_VC_REV=OFF
or otherwise) by setting "<unknown>" value as before D123549.

Reviewed By: yota9

Differential Revision: https://reviews.llvm.org/D123852
---
 bolt/lib/Utils/CommandLineOpts.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

(limited to 'bolt')

diff --git a/bolt/lib/Utils/CommandLineOpts.cpp b/bolt/lib/Utils/CommandLineOpts.cpp
index 6aa1b777e4a7..cdf75ac686a4 100644
--- a/bolt/lib/Utils/CommandLineOpts.cpp
+++ b/bolt/lib/Utils/CommandLineOpts.cpp
@@ -17,7 +17,12 @@ using namespace llvm;
 
 namespace llvm {
 namespace bolt {
-const char *BoltRevision = LLVM_REVISION;
+const char *BoltRevision =
+#ifdef LLVM_REVISION
+    LLVM_REVISION;
+#else
+    "<unknown>";
+#endif
 }
 }
 
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