From 18cfd9fdaf0b01e7a9b2cc67fddfeed877c8fc8f Mon Sep 17 00:00:00 2001
From: Nico Weber <nicolasweber@gmx.de>
Date: Sun, 21 Apr 2019 19:18:41 +0000
Subject: [PATCH] Attempt to fix LLVM_ENABLE_THREADS=OFF build after r358665

llvm-svn: 358858
---
 clang/tools/libclang/CIndex.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/clang/tools/libclang/CIndex.cpp b/clang/tools/libclang/CIndex.cpp
index 07aeb50695bc..46e6340d66dd 100644
--- a/clang/tools/libclang/CIndex.cpp
+++ b/clang/tools/libclang/CIndex.cpp
@@ -8723,7 +8723,9 @@ void clang::setThreadBackgroundPriority() {
   if (getenv("LIBCLANG_BGPRIO_DISABLE"))
     return;
 
+#if LLVM_ENABLE_THREADS
   llvm::set_thread_priority(llvm::ThreadPriority::Background);
+#endif
 }
 
 void cxindex::printDiagsToStderr(ASTUnit *Unit) {